Excavating and drilling switching connection structure of main machine arm of excavator

Abstract

Relates to an excavating and drilling switching connection structure of a main arm of an excavator in the technical field of multifunctional modification of the excavator, and comprises a main arm frame body, a first rocker, a connecting rod and an excavator bucket with a rocker seat fixed at the tail end, and the first rocker, the connecting rod, the rocker seat and an arm body at the head end of the main arm frame body are sequentially hinged through a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft to form a double-rocker mechanism; second rockers are arranged on the rocking seat side by side; two ends of the second rockers are correspondingly hinged with the connecting rods and the main arm frame body through second hinge shafts and third hinge shafts respectively; the rocking seat is detachably connected with the second hinged shaft, so that after the rocking seat and the second hinged shaft are detached, the excavator bucket can rotate to be close to the main arm frame body and is fixed through the quick detaching and positioning assembly; a connecting seat plate connected with the side wall of a drilling rig rack is fixed on one side, far away from the main boom body, of the connecting rod; according to the switching connection structure, digging and drilling switching use is more convenient, and switching connection use of a long-drill-rod drilling machine is more facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of multifunctional transformation of excavators, in particular to a digging and drilling switching connection structure of a main arm of an excavator. Background Art

[0002] As attached Figure 1 As shown in the figure, the excavator can control the bucket to change postures at multiple angles and distances for excavation, which mainly relies on the complex connection control of multiple machine arms, especially the planar double rocker mechanism at the head end of the main machine arm, which can control the bucket to rotate and position at a larger angle; and the hydraulic drilling rig also needs to control the drill bit to perform multi-angle drilling work during construction. Based on this common point, in order to save equipment cost and transportation cost, the excavation-to-drilling technology has been widely implemented and applied;

[0003] For example, the Chinese invention patent with the announcement number CN115749617A discloses an excavator-to-drilling rig, which is to remove the excavator bucket and modify it with a drilling mechanism. However, it has two defects: first, the general excavator bucket itself contains a rocker part in the double rocker mechanism. After it is completely removed, the newly installed drilling mechanism needs to have a fixed connecting piece to connect and compensate for this rocker part for overall loading and unloading connection. The removed excavator bucket also needs to be transferred and stored separately, resulting in the entire switching connection process being more complicated, time-consuming and labor-intensive; second, since the installed drilling mechanism is directly connected to the original rocker position, this causes the inward negative angle state to be more convenient when rotating the angle, while the outward positive angle state has a certain rotation limit, which is not conducive to the conversion and installation of self-drilling anchor drilling rigs with longer drill rods. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses a digging and drilling switching connection structure of an excavator main arm, which makes the digging and drilling conversion more convenient and is more conducive to the conversion and connection of long drill rod drilling rigs.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A drilling switching connection structure for the main arm of an excavator comprises a main arm frame, a first rocker arm, a connecting rod and a bucket with a rocker seat fixed at the tail end, wherein the first rocker arm, the connecting rod, the rocker seat and the arm body at the head end of the main arm frame are hingedly connected by a first hinge shaft, a second hinge shaft, a third hinge shaft and a fourth hinge shaft in sequence to form a double rocker mechanism; the rocker seat is provided with a second rocker arm in parallel, and the two ends of the second rocker arm are respectively hingedly connected to the connecting rod and the main arm frame by the second hinge shaft and the third hinge shaft; the rocker seat is detachably connected to the second hinge shaft, so that after the rocker seat and the second hinge shaft are disassembled, the bucket can be rotated close to the main arm frame and fixed by a quick-release positioning assembly; a connecting seat plate for connecting to the side wall of the drilling device frame is fixed on the side of the connecting rod away from the main arm frame.

[0007] Furthermore, a hook is installed on the outer side wall of the bucket, and a first hook nail corresponding to the hook head end is fixed on the middle arm body of the main arm frame.

[0008] Furthermore, the tail end of the hook is rotatably connected to the bucket via a fifth hinge shaft, and a second hook nail corresponding to the head end of the hook is fixed to the outer side wall of the bucket.

[0009] Furthermore, the connecting rod is in a U-shaped structure with a convex middle portion.

[0010] Furthermore, the second hinge shaft is configured as a screw shaft with nuts threaded at both ends, and the corresponding ends of the rocking seat and the second rocking arm are provided with rotating holes for fitting the screw shaft body.

[0011] Furthermore, the main boom body is equipped with a telescopic cylinder for driving the first rocker arm to swing.

[0012] Furthermore, the first rocker, the connecting rod, the rocking seat and the second rocker are each provided with two side by side.

[0013] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0014] The excavator main arm excavation and drilling switching connection structure disclosed by the utility model utilizes a connecting rod to connect an external drilling device with a longer drill rod through a fixed connecting seat plate, which can ensure a stable connection, smooth movement without interference, and facilitate outward extension and rotation positioning at a positive angle, and can also avoid replacement conflicts with the bucket connected to the rocker position. Moreover, there is no need to completely remove the bucket during replacement, which reduces the disassembly and assembly steps, and there is no need to transfer and store the removed bucket as in the traditional way, thereby greatly improving the convenience of replacement and saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a traditional excavator;

[0016] Figure 2 It is a structural schematic diagram of the utility model replacement drilling rig;

[0017] Figure 3 It is a structural schematic diagram of a recovery excavator of the utility model.

[0018] In the figure: 1, main arm frame; 2, rocker seat; 3, bucket; 4, connecting rod; 5, first rocker arm; 6, telescopic cylinder; 7, fourth hinge shaft; 8, first hinge shaft; 9, connecting seat plate; 10, second hinge shaft; 11, second rocker arm; 12, third hinge shaft; 13, second hanging nail; 14, fifth hinge shaft; 15, hook; 16, first hanging nail. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction:

[0020] Combined with Figure 2 The excavator main arm excavation and drilling switching connection structure comprises a main arm frame body 1, a first rocking arm 5, a connecting rod 4 and a bucket 3 with a rocking seat 2 fixed at the tail end. The first rocking arm 5, the connecting rod 4, the rocking seat 2 and the arm body at the head end of the main arm frame body 1 are hinged in sequence through a first hinge shaft 8, a second hinge shaft 10, a third hinge shaft 12 and a fourth hinge shaft 7 to form a double rocking arm mechanism; generally, a telescopic cylinder 6 for driving the first rocking arm 5 to swing is installed on the outer side of the main arm frame body 1, and the two ends of the telescopic cylinder 6 are respectively connected to the main arm frame body 1 and the first hinge shaft 8 for rotation, and the movement of the double rocking arm mechanism is controlled by the telescopic cylinder 6. In addition, the number of the first rocking arm 5, the connecting rod 4 and the rocking seat 2 is arranged in two side by side, that is, two side by side double rocking arm mechanisms are formed, which ensures sufficient structural strength;

[0021] The rocking seat 2 is provided with a second rocking arm 11 in parallel, and two second rocking arms 11 can also be provided and are located on the inner sides of the two rocking seats 2 to ensure that the disassembly and assembly of the rocking seat 2 is not hindered. The two ends of the second rocking arm 11 are respectively hinged to the connecting rod 4 and the main arm frame body 1 through the second hinge shaft 10 and the third hinge shaft 12 to ensure that even if the rocking seat 2 is removed, the double rocking arm mechanism can still move completely;

[0022] The rocking seat 2 is detachably connected to the second hinge shaft 10. According to needs, the second hinge shaft 10 is set as a screw shaft with nuts screwed on both ends. The corresponding ends of the rocking seat 2 and the second rocker 11 are provided with a rotating hole for the screw shaft body. When it is necessary to remove the rocking seat 2, it is only necessary to unscrew the nut and pull out the screw shaft, which is very convenient. After the rocking seat 2 and the second hinge shaft 10 are disassembled, the bucket 3 can be rotated close to the main boom frame body 1 and fixed through the quick-release positioning assembly. The quick-release positioning assembly can be directly set as a binding rope to tie the bucket 3 to the main boom frame body 1, or A hook 15 is installed on the outer wall of the bucket 3, and a first hook 16 corresponding to the hook 15 head end is fixed to the middle arm of the main boom frame 1, and the bucket 3 is fixed by the hook to prevent the removed bucket 3 from swinging and affecting the operation of the drilling rig; in addition, the tail end of the hook 15 is rotatably connected to the bucket 3 through the fifth hinge shaft 14, and a second hook 13 corresponding to the hook 15 head end is fixed to the outer wall of the bucket 3. When the excavator is working normally, the hook 15 can be rotated and retracted to hang on the second hook 13 to prevent the hook 15 from interfering with the operation of the excavator;

[0023] A connecting seat plate 9 for connecting to the side wall of the drilling device frame is fixed on the side of the connecting rod 4 away from the main boom body 1; as needed, the connecting rod 4 is in a U-shaped structure with a convex middle part. The U-shaped structure facilitates the installation of the drilling device and can also reduce structural interference when the drilling device adjusts its angle.

[0024] The excavator main arm excavation and drilling switching connection structure described in the utility model is implemented as follows: Figure 2 As shown, when the drilling device needs to be installed, first remove the connection between the rocking seat 2 and the second hinge shaft 10, then use the third hinge shaft 12 that is still rotatably connected to rotate the bucket 3 close to the main boom frame 1, then use the hook 15 to hook the first hanging nail 16 for positioning, and finally install the fixed drilling device on the connecting seat plate 9 accordingly; Figure 3 As shown, when the excavator needs to be restored to use, the drilling device is first removed, and then the first hook nail 16 is lowered and the bucket 3 is rotated to connect the rocking seat 2 and the second hinge shaft 10.

[0025] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A main arm excavation and drilling switching connection structure of an excavator, comprising a main arm frame (1), a first rocking arm (5), a connecting rod (4), and a bucket (3) with a rocking seat (2) fixed at the rear end, wherein the first rocking arm (5), the connecting rod (4), the rocking seat (2), and the arm body at the head end of the main arm frame (1) are hinged in sequence through a first hinge shaft (8), a second hinge shaft (10), a third hinge shaft (12), and a fourth hinge shaft (7) to form a double rocking arm mechanism, wherein: The rocking seat (2) is provided with a second rocking arm (11) in parallel, and the two ends of the second rocking arm (11) are respectively hinged to the connecting rod (4) and the main boom frame body (1) via the second hinge shaft (10) and the third hinge shaft (12); the rocking seat (2) and the second hinge shaft (10) are detachably connected, so that after the rocking seat (2) and the second hinge shaft (10) are detached, the bucket (3) can be rotated close to the main boom frame body (1) and fixed by a quick-release positioning assembly; a connecting seat plate (9) for connecting to the side wall of the drilling device frame is fixed on the side of the connecting rod (4) away from the main boom frame body (1).

2. The excavator main arm excavation and drilling switching connection structure according to claim 1 is characterized in that: A hook (15) is installed on the outer side wall of the bucket (3), and a first hook nail (16) corresponding to the head end of the hook (15) is fixed to the middle arm of the main arm frame (1).

3. The excavator main arm excavation and drilling switching connection structure according to claim 2 is characterized in that: The tail end of the hook (15) is rotatably connected to the bucket (3) via a fifth hinge shaft (14), and a second hook nail (13) corresponding to the head end of the hook (15) is fixed to the outer side wall of the bucket (3).

4. The excavator main arm excavation and drilling switching connection structure according to claim 1 is characterized in that: The connecting rod (4) is in a U-shaped structure with a convex middle portion.

5. The excavator main arm excavation and drilling switching connection structure according to claim 1 is characterized in that: The second hinge shaft (10) is configured as a screw shaft with nuts screwed onto both ends, and the corresponding ends of the rocking seat (2) and the second rocking arm (11) are both provided with a rotating hole for fitting the screw shaft body.

6. The excavator main arm excavation and drilling switching connection structure according to claim 1 is characterized in that: The main boom body (1) is equipped with a telescopic cylinder (6) for driving the first rocker arm (5) to swing.

7. The excavator main arm excavation and drilling switching connection structure according to claim 1 is characterized in that: The number of the first rocking arm (5), the connecting rod (4), the rocking seat (2) and the second rocking arm (11) is two in parallel.

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