A multifunctional machine and excavator

Abstract

The application discloses a multifunctional machine tool and an excavator. The machine tool comprises a bulldozing shovel main body, a shovel blade main body hinged with the bulldozing shovel main body through a fifth hinge point, and a shovel blade hinged with the shovel blade main body through an eighth hinge point. The bulldozing shovel main body comprises a first hinge point for connecting with a machine frame. A bulldozing oil cylinder for driving the bulldozing shovel main body to swing up and down is connected to the bulldozing shovel main body. A second hinge point for connecting with the machine frame is arranged on the bulldozing oil cylinder. An intermediate oil cylinder for enabling the shovel blade main body to swing forward and backward around the fifth hinge point is connected between the bulldozing shovel main body and the shovel blade main body. The shovel blade and the shovel blade main body are connected with a shovel blade oil cylinder for enabling the shovel blade to open and close forward and backward around the eighth hinge point. The application can enable the machine tool to realize the bulldozing function, and can also satisfy the material transfer and clamping and carrying functions.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, specifically to a multi-functional implement and an excavator. Background Technology

[0002] Existing bulldozer blades have a simple structure and limited functionality. For example... Figure 12 The bulldozer blade shown has a central hinge point connected to the hydraulic cylinder and two hinge points on both sides connected to the chassis, which only fulfills the function of raising and lowering the entire bulldozer blade.

[0003] Existing bulldozer blades cannot be used for material transfer. If users need to transfer materials, they need to use separate transfer equipment such as loaders or log clamps, which will result in low efficiency and poor economic performance. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-functional implement and excavator that solves the problem of the single function of the bulldozer blade in the prior art, so that the bulldozer blade can realize the function of bulldozing, as well as the function of material transfer and clamping.

[0005] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention discloses a multifunctional machine tool, comprising:

[0007] The bulldozer blade body includes a first hinge point for connecting to the frame, and a bulldozer cylinder for driving its up and down swing is connected to the bulldozer blade body. The bulldozer cylinder is provided with a second hinge point for connecting to the frame.

[0008] The blade body is hinged to the bulldozer blade body at the fifth hinge point, and an intermediate hydraulic cylinder is connected between the bulldozer blade body and the blade body to allow the blade body to swing back and forth around the fifth hinge point.

[0009] The shovel is hinged to the shovel body via the eighth hinge point, and the shovel and the shovel body are connected to a shovel cylinder for opening and closing the shovel around the eighth hinge point.

[0010] Furthermore, the bulldozer blade body includes a C-shaped plate, a sealing plate, and two rectangular tubes;

[0011] The C-shaped plate and the two rectangular tubes are fixedly connected to one side of the sealing plate. The two rectangular tubes are symmetrically arranged at both ends of the C-shaped plate, and the first hinge point is located at the end of the rectangular tube away from the sealing plate.

[0012] Furthermore, the C-shaped plate has a second ear plate on the side away from the sealing plate, and the second ear plate has a third hinge point for connecting the bulldozer cylinder.

[0013] Furthermore, a first bent plate and a thick pad are fixedly connected to the outer side of the rectangular tube. Holes are opened on the first bent plate and the thick pad to form a fourth hinge point for connecting the intermediate oil cylinder.

[0014] Furthermore, a circular tube is fixedly connected to the outer side of the rectangular tube, and a first mounting plate is fixedly connected to the end face of the circular tube and the sealing plate. The end of the first mounting plate away from the circular tube is provided with a first ring for forming a fifth hinge point.

[0015] Furthermore, the angle between the line connecting the fourth and fifth hinge points and the axis of the intermediate cylinder is 8-15°.

[0016] Furthermore, the sealing plate is provided with symmetrical notches, which are located outside the connection point between the rectangular tube and the sealing plate.

[0017] Furthermore, the blade body includes component two and component one symmetrically fixedly connected to both sides of component two, with a second mounting plate and a third mounting plate connected to the ends of component one on both sides;

[0018] A placement gap is formed between the second mounting plate and the third mounting plate for placing the shovel cylinder. One end of the second mounting plate and the third mounting plate is provided with a sixth hinge point for connecting the shovel cylinder coaxially, and the other end is provided with an eighth hinge point for hinged to the shovel coaxially.

[0019] Furthermore, the second component includes a back arc plate and a second plate, a reinforcing plate, a main plate, and a vertical plate symmetrically fixedly connected to the back arc plate;

[0020] The hole at the bottom of the motherboard is coaxial with the holes on the second mounting plate and the reinforcing plate to form the fifth hinge point;

[0021] The top of the main plate and the vertical plate are provided with a concentric second ring to form a ninth hinge point connecting the intermediate oil cylinder.

[0022] Furthermore, the angle between the line connecting the eighth hinge point and the fifth hinge point and the axis of the shovel cylinder is 10-20°.

[0023] Furthermore, a C-shaped beam connects the two upright plates.

[0024] Furthermore, the bottom outer side of the mounting plate is serrated, and the bottom front end is provided with downward-curving hook teeth.

[0025] Furthermore, the shovel includes a base plate and two second side plates fixedly connected to both sides of the top surface of the base plate. Side blades are also fixedly connected to the outer sides of the second side plates on both sides, and blades are also fixedly connected between the second side plates on both sides.

[0026] The upper part of the second side plate is also connected to a third curved plate, and the second side plate and the third curved plate are provided with a coaxial third ring for connecting the shovel cylinder.

[0027] Furthermore, a cylindrical seat for forming a hinge point is also connected between the second side plate and the third curved plate.

[0028] Furthermore, the bottom inner side of the second side plate is serrated, and the bottom front end is provided with downward-curving hook teeth.

[0029] Furthermore, the swing angle of the bulldozer body is 10-20°, the swing angle of the blade body is 55-70°, and the opening and closing angle of the blade is 45-55°.

[0030] Secondly, the present invention discloses an excavator that includes the multi-functional implements described in any of the preceding claims.

[0031] According to the above technical solution, the embodiments of the present invention have at least the following effects:

[0032] 1. The multi-functional implement of this application is designed with a bulldozer blade body, a blade body hinged to the bulldozer blade body, and a blade hinged to the blade body. The bulldozer blade body is driven to swing up and down by a bulldozer cylinder, the blade body is driven to swing back and forth by a middle cylinder, and the blade is controlled to open and close back and forth by a blade cylinder. By controlling the swinging and opening of the three components, the implement can realize the bulldozer function and also meet the material transfer and clamping functions.

[0033] 2. The bulldozer blade body and the blade body are hinged at the fifth hinge point, the blade body and the blade are hinged at the eighth hinge point, the bulldozer cylinder and the frame are hinged at the hinge point, the intermediate cylinder is connected between the bulldozer blade body and the blade body, and the blade cylinder is connected between the blade body and the blade. The hinge point connection makes the disassembly and installation of the implement convenient. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the material shoveling, transferring, and unloading mechanism of the present invention;

[0035] Figure 2 This is a schematic diagram of the machine for clamping, transferring, and unloading wood according to the present invention;

[0036] Figure 3 This is a schematic diagram of the machine structure of the present invention;

[0037] Figure 4 This is a schematic diagram of the main structure of the bulldozer blade of the present invention;

[0038] Figure 5 This is a schematic diagram of the main structure of the shovel of the present invention;

[0039] Figure 6This is a cross-sectional view of the shovel body of the present invention;

[0040] Figure 7 This is a schematic diagram of the shovel structure of the present invention;

[0041] Figure 8 This is a schematic diagram showing the extreme positions of the bulldozer's main movement.

[0042] Figure 9 This is a schematic diagram showing the extreme positions of the blade's main body.

[0043] Figure 10 This is a schematic diagram of the extreme positions of the shovel blade.

[0044] Figure 11 A schematic diagram showing the connection between the shovel body cylinder and the shovel cylinder hinge point;

[0045] Figure 12 This is a schematic diagram of the structure of a bulldozer blade in the background art. Detailed Implementation

[0046] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0047] It should be noted that in the description of this invention, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this invention refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0048] The purpose of this invention is to address the problem that existing bulldozer blades on excavators cannot transfer materials, and users need to use separate transfer equipment such as loaders or log clamps when they need to transfer materials, which results in low efficiency and poor economy. The invention designs a multi-functional tool that has both simple bulldozing function and can also meet the functions of material transfer and clamping, and is easy to assemble and disassemble. Example 1

[0049] like Figures 1 to 11As shown, a multi-functional implement includes a bulldozer blade body 1, a blade body 2 hinged to the bulldozer blade body 1 via fifth hinge points 10 and 16, and a blade 3 hinged to the blade body 2 via eighth hinge points 20 / 24. The bulldozer blade body 1 includes a first hinge point 4 / 6 for connecting to the frame. A bulldozer cylinder 14 for driving its up-and-down swing is connected to the bulldozer blade body 1. The bulldozer cylinder 14 is provided with a second hinge point 5 for connecting to the frame. An intermediate cylinder 9 / 15 is connected between the bulldozer blade body 1 and the blade body 2 for swinging the blade body 2 back and forth around the fifth hinge point 10 / 16. A blade cylinder 11 / 18 is connected between the blade 3 and the blade body 2 for opening and closing the blade 3 back and forth around the eighth hinge point 20 / 24.

[0050] The multi-functional implement of this application is designed with a bulldozer blade body, a blade body hinged to the bulldozer blade body, and a blade hinged to the blade body. The bulldozer blade body is driven to swing up and down by a bulldozer cylinder, the blade body is driven to swing back and forth by a middle cylinder, and the blade is controlled to open and close back and forth by a blade cylinder. By controlling the swinging and opening of the three components, the implement can realize the bulldozing function and can also meet the functions of material transfer and clamping.

[0051] like Figures 1-11 As shown, the machine of the present invention consists of a bulldozer blade body 1, a blade body 2, and a blade 3 connected by 5 hydraulic cylinders and 16 hinge points.

[0052] The first hinge point 4 / 6 and the second hinge point 5 are connected to the hinge point hole of the frame by a pin. The third hinge point 7 is connected to the bulldozer cylinder 14 and the bulldozer body 1 by a pin. The bulldozer cylinder 14 controls the up and down swing of the entire machine, with a maximum swing angle of 10-20°.

[0053] The blade body 2 is controlled by intermediate hydraulic cylinders 9 / 15 to swing back and forth around the fifth hinge point 10 / 16 pin, with a maximum swing angle of 55-70°. Specifically, intermediate hydraulic cylinder 9 is connected to the fourth hinge point 8 pin and the ninth hinge point 22 pin, and intermediate hydraulic cylinder 15 is connected to the fourth hinge point 13 pin and the ninth hinge point 21 pin.

[0054] The blade 3 is controlled by the blade cylinders 11 / 18 to open and close around the eighth hinge point 20 / 24 pin, with a maximum opening angle of 45-55°. Specifically, the blade cylinder 11 is connected to the sixth hinge point 12 pin and the seventh hinge point 23 pin, and the blade cylinder 18 is connected to the sixth hinge point 17 pin and the seventh hinge point 19 pin.

[0055] like Figure 4 As shown, the main structure of the bulldozer blade of the present invention is a left-right symmetrical structure. The first ear plate 2-7, the first mounting plate 2-8, the rectangular tube 2-9, the C-shaped plate 2-11, the second ear plate 2-10, and the stop ring 2-12 are welded to form the two arms of the bulldozer body.

[0056] Furthermore, a first bending plate 2-1 and a thick pad 2-2 are welded to the side of the rectangular tube 2-9, and holes are made in the first bending plate 2-1 and the thick pad 2-2 to form a fourth hinge point 8 and a fourth hinge point 13.

[0057] Furthermore, a sealing plate 2-6 is welded to the front end of the rectangular tube 2-9 to form a closed cavity structure with the rectangular tube 2-9 and the C-shaped plate 2-11. Two semi-circular notches are symmetrically opened on the left and right sides of the sealing plate 2-6 to avoid interference with the intermediate oil cylinder 9 and the intermediate oil cylinder 15.

[0058] Furthermore, a circular tube 2-3 is welded to the side of the rectangular tube 2-9, and a first mounting plate 2-4 and a first ring 2-5 are welded to the end faces of the circular tube 2-3 and the sealing plate 2-6, forming a symmetrical fifth hinge point 10 and a fifth hinge point 16.

[0059] Furthermore, designing the circular tube 2-3 as a circular tube structure effectively increases the structure's resistance to bending and torsion. The first mounting plate 2-4 is designed as a four-lobed structure, which is beneficial for the design of the hinge point and lifting hole; and increases the contact length at the hinge point, reduces wear, and increases structural strength.

[0060] Furthermore, the overall hinge point design is located on both sides of the rectangular tube 2-9, which facilitates the arrangement of the hinge points and helps to increase the stability of the structure.

[0061] The hinge points of the bulldozer body are symmetrically positioned. The hinge point of the blade body cylinder is set on the outer curved plate of the rectangular tube of the two arms. The rotating hinge point of the blade body is formed by openings in the thicker side plate and is staggered from the maximum radius of the cylinder to avoid interference.

[0062] A round tube 2-3 is placed between the thicker first mounting plate 2-4 and the rectangular tube 2-9 to form a closed structure, thereby improving the structural strength and stability.

[0063] like Figure 5 As shown, the shovel body of the present invention is welded together from the second side mounting plate 3-1, the third mounting plate 3-2, the square tube 3-3, the second curved plate 3-4, the first side plate 3-5, the second mounting plate 3-6, the reinforcing plate 3-7, the main plate 3-8, the upright plate 3-9, the second ring 3-10, the C-shaped beam 3-11, and the back arc plate 3-12, and is symmetrical from left to right.

[0064] Furthermore, the two square tubes 3-3 are welded to the second bent plate 3-4 to form component one.

[0065] Furthermore, the second mounting plate 3-6, the reinforcing plate 3-7, the main plate 3-8, and the upright plate 3-9 are respectively welded onto the back arc plate 3-12, and 3-11 is welded onto the upright plates 3-9 on the left and right sides to form component two.

[0066] Furthermore, the C-shaped beam 3-11 connects the vertical plates 3-9 on the left and right sides, which is beneficial to the structural stability of the hinge point, reduces the amount of welding deformation, and increases the positional and dimensional accuracy of the hinge points on both sides.

[0067] Furthermore, the holes at the bottom of the second mounting plate 3-6, the reinforcing plate 3-7, and the main plate 3-8 on the left and right sides are concentric, forming the fifth hinge point 10 and the fifth hinge point 16.

[0068] Furthermore, the holes on the upper part of the main board 3-8, the vertical board 3-9, and the second ring 3-10 on the left and right sides are concentric, forming the ninth hinge point 21 and the ninth hinge point 22.

[0069] Furthermore, component one, component two, first side plate 3-5, second side mounting plate 3-1, and third mounting plate 3-2 are welded together to form the main structure of the shovel blade.

[0070] Furthermore, a certain gap is left between the second mounting plates 3-1 and the third mounting plates 3-2 on both sides to accommodate the shovel cylinders 11 and 18 on both sides. The two holes on the second mounting plates 3-1 and the third mounting plates 3-2 on both sides are concentric, forming the sixth hinge point 12, the sixth hinge point 17 and the eighth hinge point 24, the eighth hinge point 20.

[0071] Furthermore, the bottom outer side of the second mounting plate 3-1 is serrated, which makes it easier to clamp materials more tightly. The bottom front end has hook teeth and is curved downwards, which makes it easier to clamp materials and makes the materials less likely to fall off.

[0072] The blade body of this application adopts an arc-shaped cross-section design, which is beneficial for pipeline layout; the positions of the fifth hinge point 10 and the ninth hinge point 22 are staggered to the maximum radius of the hydraulic cylinder, and one hinge point hole is located on the same plate, which makes it easy to control the form and position tolerance of each hole at the hinge point.

[0073] The fifth hinge point 10 is close to the lower square tube 3-3, which is beneficial for the transmission of force and torque; the eighth hinge point 20 / 24 is higher than the upper square tube 3-3 to avoid interference. The C-shaped beam 3-11 is designed to improve structural rigidity; the side mounting plate has hook teeth on the bottom for easy material handling.

[0074] like Figure 7 The second side plate 7-1, the third ring 7-2, the third curved plate 7-3, the cylindrical seat 7-4, the stiffening plate 7-5, the bottom plate 7-6, the cutting edge 7-7, and the side cutting edge 7-8 are welded together to form the main body of the shovel. The main body of the shovel is symmetrical from left to right.

[0075] Furthermore, the third ring 7-2 is welded inside the upper holes of the second side plate 7-1 and the third curved plate 7-3 to increase the contact area. The upper holes of the second side plate 7-1 and the third curved plate 7-3 are concentric, forming the seventh hinge point 23 and the seventh hinge point 19, which connect to the piston rod of the shovel cylinder.

[0076] Furthermore, the cylindrical base 7-4 passes through the lower holes of the second side plate 7-1 and the third curved plate 7-3, forming the eighth hinge point 24 and the eighth hinge point 20. The scraper rotates around the pins of the eighth hinge point 20 and the eighth hinge point 24 to achieve the purpose of opening and closing.

[0077] Furthermore, circumferential welds are arranged on the outer side of the cylindrical base 7-4 in contact with the second side plate 7-1 and the third curved plate 7-3, which is beneficial to the strength and stability of the upper part of the structure.

[0078] Furthermore, the third bent plate 7-3 is welded to the second side plate 7-1 by bending the lower part, and a stiffening plate 7-5 is welded between the second side plate 7-1 and the third bent plate 7-3, which is beneficial to the strength of the lower part of the structure.

[0079] Furthermore, the base plate 7-6, the cutting edge 7-7, and the side cutting edge 7-8 are welded onto the second side plate 7-1 on the left and right sides respectively. The separate welding of the cutting edge 7-7 and the side cutting edge 7-8 makes it easier to replace the blade after it has been worn down by prolonged contact with materials and the ground.

[0080] Furthermore, the lower part of the second side plate 7-1 is provided with a serrated structure, which is beneficial for clamping long materials.

[0081] The third curved plate 7-3 is welded onto the second side plate 7-1, leaving space for the placement of the hydraulic cylinder. The cylindrical seat and stiffening plate structure enhance the strength and stability of the upper and lower structures. The bottom of the shovel body side plate is equipped with hook teeth to facilitate the hooking of materials.

[0082] like Figure 8 The maximum rotational posture and maximum rotation angle α of the bulldozer body; such as Figure 9 The limit posture of the blade body rotation and the maximum rotation angle β; such as Figure 10 The shovel's extreme rotational posture and maximum rotation angle θ; such as Figure 11 The line connecting the fourth hinge point 8 / 13 and the fifth hinge point 10 / 16 forms an angle ε with the axis of the shovel body cylinder, and the line connecting the sixth hinge point 12 / 17 and the eighth hinge point 20 / 24 forms an angle σ with the axis of the shovel cylinder.

[0083] The equipment described in this application is multi-functional, simple, economical and practical, and can meet different material handling needs by changing the equipment. Example 2

[0084] Based on the multi-functional implement of Embodiment 1, this embodiment also discloses an excavator that uses the implement of Embodiment 1, which can be used for multiple purposes and is simple and convenient to install and replace implements.

[0085] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A multi-functional machine tool, characterized in that, include: The bulldozer blade body (1) includes a first hinge point (4, 6) for connecting with the frame. The bulldozer blade body (1) is connected to a bulldozer cylinder (14) for driving it to swing up and down. The bulldozer cylinder (14) is provided with a second hinge point (5) for connecting with the frame. The blade body (2) is hinged to the bulldozer blade body (1) via the fifth hinge point (10, 16). An intermediate hydraulic cylinder (9, 15) is connected between the bulldozer blade body (1) and the blade body (2) to allow the blade body (2) to swing back and forth around the fifth hinge point (10, 16). The shovel (3) is hinged to the shovel body (2) via the eighth hinge point (20, 24). The shovel (3) and the shovel body (2) are connected to a shovel cylinder (11, 18) for opening and closing the shovel (3) around the eighth hinge point (20, 24). The shovel body (2) includes component two and component one symmetrically welded on both sides of component two. The ends of component one on both sides are connected to a second mounting plate (3-1) and a third mounting plate (3-2). A placement gap is formed between the second mounting plate (3-1) and the third mounting plate (3-2) for placing the shovel cylinder (11, 18). One end of the second mounting plate (3-1) and the third mounting plate (3-2) is provided with a coaxial sixth hinge point (12, 17) for connecting the shovel cylinder (11, 18), and the other end is provided with a coaxial eighth hinge point (20, 24) for hinged to the shovel (3). The second component includes a back arc plate (3-12) and a second plate (3-6), a reinforcing plate (3-7), a main plate (3-8), and a vertical plate (3-9) symmetrically welded to the back arc plate (3-12); the back arc plate (3-12) is used for bulldozing. The hole at the bottom of the main board (3-8) is coaxial with the holes on the second mounting plate (3-6) and the reinforcing plate (3-7) to form the fifth hinge point (10, 16). The top of the main plate (3-8) and the vertical plate (3-9) are provided with concentric second rings (3-10) to form the ninth hinge point (21, 22) connecting the intermediate oil cylinder (9, 15). The shovel (3) includes a base plate (7-6) and two second side plates (7-1) welded to both sides of the top surface of the base plate. Side cutting plates (7-8) are also welded to the outer side of the second side plates (7-1) on both sides, and cutting plates (7-7) are also welded between the second side plates (7-1) on both sides. When the bottom plate (7-6) contacts the back arc plate (3-12), a receiving cavity for accommodating the scraped material is formed between the back arc plate (3-12), the bottom plate (7-6), and the two second side plates (7-1); The upper part of the second side plate (7-1) is also connected to a third curved plate (7-3). The second side plate (7-1) and the third curved plate (7-3) are provided with a coaxial third ring (7-2) for connecting the shovel cylinder (11, 18). The angle between the line connecting the eighth hinge point (20, 24) and the fifth hinge point (10, 16) and the axis of the shovel cylinder (11, 18) is 10-20°. The swing angle of the bulldozer blade body (1) is 10-20°, the swing angle of the blade body (2) is 55-75°, and the opening and closing angle of the blade (3) is 45-55°.

2. The multifunctional machine tool according to claim 1, characterized in that, The bulldozer blade body (1) includes a C-shaped plate (2-11), a sealing plate (2-6), and two rectangular tubes (2-9). The C-shaped plate (2-11) and the two rectangular tubes (2-9) are both welded to one side of the sealing plate (2-6). The two rectangular tubes (2-9) are symmetrically arranged at both ends of the C-shaped plate (2-11). The first hinge point (4, 6) is located at the end of the rectangular tube (2-9) away from the sealing plate (2-6).

3. The multifunctional machine tool according to claim 2, characterized in that, The C-shaped plate (2-11) has a second ear plate (2-10) on one side away from the sealing plate (2-6), and the second ear plate (2-10) has a third hinge point (7) for connecting the bulldozer cylinder (14).

4. The multifunctional machine tool according to claim 2, characterized in that, The outer side of the rectangular tube (2-9) is welded with a first bending plate (2-1) and a thick pad plate (2-2). Holes are opened on the first bending plate (2-1) and the thick pad plate (2-2) to form a fourth hinge point (8, 13) for connecting the intermediate oil cylinder (9, 15).

5. The multifunctional machine tool according to claim 4, characterized in that, The outer side of the rectangular tube (2-9) is welded with a round tube (2-3), and the end faces of the round tube (2-3) and the sealing plate (2-6) are welded with a first mounting plate (2-4). The first mounting plate (2-4) is provided with a first ring (2-5) at one end away from the round tube (2-3) for forming a fifth hinge point (10, 16).

6. The multifunctional machine tool according to claim 5, characterized in that, The angle between the line connecting the fourth hinge point (8, 13) and the fifth hinge point (10, 16) and the axis of the intermediate oil cylinder (9, 15) is 8-15°.

7. The multifunctional machine tool according to claim 2, characterized in that, The sealing plate (2-6) has symmetrical notches, which are located outside the connection point between the rectangular tube (2-9) and the sealing plate (2-6).

8. The multifunctional machine tool according to claim 1, characterized in that, A C-shaped beam (3-11) connects the two upright plates (3-9) on both sides.

9. The multifunctional machine tool according to claim 1, characterized in that, The mounting plate (3-1) has a serrated outer bottom and a downward-curving hook tooth at the front bottom.

10. The multifunctional machine tool according to claim 1, characterized in that, A cylindrical seat (7-4) for forming hinge points (20, 24) is also connected between the second side plate (7-1) and the third curved plate (7-3).

11. The multifunctional machine tool according to claim 1, characterized in that, The bottom inner side of the second side plate (7-1) is serrated, and the bottom front end is provided with downward-curving eagle-hook teeth.

12. An excavator, characterized in that, Includes the multifunctional machine described in any one of claims 1-11.

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