Milling and digging reinforcing arm and milling and digging machine

Abstract

The utility model provides a milling digging reinforcing arm and milling digging machine, including first swing arm, second swing arm and milling digging head, the lower part of first swing arm is provided with first telescopic piece, the upper part of first swing arm is provided with second telescopic piece that is articulated with the rear end of first swing arm, the fixed end of second telescopic piece is articulated with the top of first swing arm, and the fixed end of second telescopic piece is articulated with the milling digging head. The second swing arm is provided with a third telescopic piece hinged to the milling and digging head, and the fixed end of the third telescopic piece is hinged to the top of the second swing arm. The two first telescopic pieces are arranged in parallel, and limiting pipes are arranged on the two sides of the first swing arm correspondingly. According to the milling and excavating reinforcing arm, the first swing arm is synchronously driven through the two first telescopic pieces, the stress performance of the first swing arm is improved, the operation capacity of the first swing arm is enhanced, the construction efficiency is improved, the limiting pipe is used for penetrating a pipeline, the pipeline can be effectively limited and protected, and the situation that the pipeline is damaged in the milling and excavating operation process is avoided. And the pipeline is wound with an external component and the like, so that the smooth operation is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of milling and digging machines, and more specifically, relates to a milling and digging reinforcement arm and a milling and digging machine. Background Art

[0002] When performing tunnel arch repair, milling machines are often used. The milling diameter and milling depth of the milling machine can reach more than 3 meters, the maximum swing angle on both sides can reach 45°, and the operating efficiency is as high as more than 90%, which is several times higher than the traditional operating method.

[0003] Existing milling machines generally use a single hydraulic cylinder to drive the arm, which has the problem of insufficient driving force and relatively poor driving stability, affecting the quality and efficiency of milling operations. At the same time, due to the multiple articulated structures of the milling arm, the oil circuit and cables of the hydraulic cylinder are very likely to interfere with other components when following the swing of the front end of the milling arm, which can easily affect the oil circuit and cables and affect the normal operation of the equipment. Utility Model Content

[0004] The utility model aims to provide a milling and digging reinforcement arm and a milling and digging machine, which can improve the operating capacity of the milling and digging machine, speed up the operating efficiency, and ensure the normal operation of the milling and digging machine.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a milling and digging reinforcement arm is provided, comprising a first swing arm hinged to the front side of a machine body, a second swing arm hinged to the front end of the first swing arm, and a milling and digging head hinged to the front end of the second swing arm, a first telescopic member hinged to the machine body is provided below the first swing arm, a telescopic end of the first telescopic member is hinged to the bottom of the first swing arm, a second telescopic member hinged to the rear end of the first swing arm is provided above the first swing arm, a fixed end of the second telescopic member is hinged to the top of the first swing arm, a third telescopic member hinged to the milling and digging head is provided above the second swing arm, and a fixed end of the third telescopic member is hinged to the top of the second swing arm;

[0006] Among them, two first telescopic members are arranged in parallel, and the two first telescopic members are arranged at intervals in the width direction of the body. Limiting tubes for pipelines to pass through are respectively arranged on both sides of the first swing arm, and the limiting tubes are arranged along the extension direction of the first swing arm.

[0007] In one possible implementation, the first swing arm is installed on the front side of the body through a mounting base, the mounting base has a horizontally extending first hinge shaft and a first rotating shaft located below the first hinge shaft, the rear end of the first swing arm is rotatably connected to the first hinge shaft, and the fixed end of the first telescopic member is rotatably connected to the first rotating shaft.

[0008] In a possible implementation, a lower connecting seat is provided below the first swing arm, two second rotating shafts are provided on the lower connecting seat, and the extended ends of the two first telescopic members are rotatably connected to the two second rotating shafts in a one-to-one correspondence.

[0009] In a possible implementation, an upper connecting seat is provided above the first swing arm, and a second hinge shaft hinged to a rear end of the second swing arm is provided at a front end of the first swing arm.

[0010] In some embodiments, an extension portion is provided at the rear end of the second swing arm, and the extended end of the second telescopic member is rotatably connected to the rear end of the extension portion via a third rotating shaft.

[0011] In a possible implementation, a connecting arm is hinged between the third telescopic member and the milling head, the connecting arm and the third telescopic member are rotationally connected via an auxiliary rotating shaft, and a limiting swing rod is provided between the auxiliary rotating shaft and the front end of the second swing arm.

[0012] In some embodiments, two limit swing rods are provided, and the two limit swing rods are symmetrically arranged on both sides of the second swing arm, and the front ends of the two limit swing rods are hinged to the two ends of the auxiliary rotating shaft in a one-to-one correspondence.

[0013] In a possible implementation, two limiting tubes are provided, and the two limiting tubes are respectively located on both sides of the first swing arm. The two limiting tubes are respectively used to limit the pipelines of the second telescopic member and the milling head. A number of limiting seats for limiting the limiting tubes are respectively provided on both sides of the first swing arm.

[0014] In some embodiments, the limiting seat includes a supporting rod connected to the side of the first swing arm and extending outward, and a downward pressure arc seat hinged on the first swing arm. The downward pressure arc seat is located above the supporting rod and encloses a space for limiting the pipeline together with the supporting rod. The downward pressure arc seat is connected to the supporting rod through a connecting piece.

[0015] Compared with the prior art, the scheme shown in the embodiment of the present application provides a milling and excavation reinforcement arm, which synchronously drives the first swing arm through two first telescopic parts located below the first swing arm, thereby improving the force-bearing performance of the first swing arm, enhancing the operating capacity of the first swing arm, ensuring the stability and smoothness of the milling and excavation operation, and helping to improve construction efficiency. The limiting pipe is used for laying pipelines, which can effectively limit and protect the pipelines, avoiding problems such as entanglement between the pipelines and external components during the milling and excavation operation, thereby ensuring the smooth progress of the operation.

[0016] The utility model also provides a milling excavator, which includes a milling excavator reinforcement arm. The milling excavator drives the first swing arm synchronously through two first telescopic members, thereby improving the force performance of the first swing arm, enhancing the operation capacity of the first swing arm, ensuring the stability and smoothness of the milling excavation operation, and helping to improve the construction efficiency. The limit pipe is used for passing the pipeline, which can effectively limit and protect the pipeline, avoid the problem of the pipeline and the external components being entangled during the milling excavation operation, and ensure the smooth progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a milling and drilling machine provided in an embodiment of the utility model;

[0019] Figure 2 For the utility model embodiment Figure 1 Structural schematic diagram of the middle milling and digging reinforcement arm;

[0020] Figure 3 For the utility model embodiment Figure 2 A schematic diagram of the enlarged structure of the middle and lower connecting seat, the first telescopic member and the mounting seat in the direction A;

[0021] Figure 4 This is a schematic diagram of the enlarged structure of the limit seat in the B direction provided in an embodiment of the utility model.

[0022] Among them, the reference numerals in the figure are:

[0023] 1. First swing arm; 11. Mounting seat; 12. First hinge axis; 13. Lower connecting seat; 14. Upper connecting seat; 2. Second swing arm; 21. Second hinge axis; 22. Extension portion; 23. Milling head; 3. First telescopic member; 31. First rotating shaft; 32. Second rotating shaft; 4. Second telescopic member; 41. Third rotating shaft; 5. Third telescopic member; 6. Limiting tube; 7. Connecting arm; 71. Auxiliary rotating shaft; 72. Limiting swing arm; 8. Limiting seat; 81. Supporting rod; 82. Lower pressure arc seat; 83. Connecting member; 9. Machine body. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] Please also read Figures 1 to 4 , the milling reinforcement arm and the milling machine provided by the utility model are now described. The milling reinforcement arm includes a first swing arm 1 hinged to the front side of the machine body 9, a second swing arm 2 hinged to the front end of the first swing arm 1, and a milling head 23 hinged to the front end of the second swing arm 2. A first telescopic member 3 hinged to the machine body 9 is provided below the first swing arm 1, and the telescopic end of the first telescopic member 3 is hinged to the bottom of the first swing arm 1. A second telescopic member 4 hinged to the rear end of the first swing arm 1 is provided above the first swing arm 1, and the fixed end of the second telescopic member 4 is hinged to the top of the first swing arm 1. A third telescopic member 5 hinged to the milling head 23 is provided above the second swing arm 2, and the fixed end of the third telescopic member 5 is hinged to the top of the second swing arm 2;

[0027] Among them, two first telescopic members 3 are arranged in parallel, and the two first telescopic members 3 are arranged at intervals in the width direction of the body 9. Limiting tubes 6 for pipelines to pass through are respectively arranged on both sides of the first swing arm 1, and the limiting tubes 6 are arranged along the extension direction of the first swing arm 1.

[0028] Compared with the prior art, the milling and excavation reinforcement arm provided in the present embodiment drives the first swing arm 1 synchronously through the two first telescopic parts 3 located below the first swing arm 1, thereby improving the force-bearing performance of the first swing arm 1, enhancing the operating capacity of the first swing arm 1, ensuring the stability and smoothness of the milling and excavation operation, and helping to improve the construction efficiency. The limiting pipe 6 is used for threading pipelines, which can effectively limit and protect the pipelines, avoiding problems such as entanglement of the pipelines with external components during the milling and excavation operation, thereby ensuring the smooth progress of the operation.

[0029] In this embodiment, the first swing arm 1, the second swing arm 2 and the milling head 23 extend from the back to the front and are hinged in sequence. The first telescopic member 3, the second telescopic member 4 and the third telescopic member 5 drive the three components to achieve milling operation. The first swing arm 1 has the largest structural size and the required support force is also the largest, so it needs to be driven by two first telescopic members 3. The two first telescopic members 3 are spaced apart in the left and right directions, and can provide symmetrical driving force from the left and right sides, thereby improving the stability of the milling operation and ensuring a good driving effect.

[0030] In one possible implementation, please also refer to Figures 1 to 4 The first swing arm 1 is installed on the front side of the body 9 through a mounting base 11. The mounting base 11 has a horizontally extending first hinge shaft 12 and a first rotating shaft 31 located below the first hinge shaft 12. The rear end of the first swing arm 1 is rotatably connected to the first hinge shaft 12, and the fixed end of the first telescopic member 3 is rotatably connected to the first rotating shaft 31.

[0031] In this embodiment, the first telescopic member 3 is installed through the mounting base 11, and the first hinge shaft 12 is arranged on the mounting base 11 to achieve rotational coordination with the first swing arm 1. The first rotating shaft 31 is located below the first swing arm 1 and is used to install the fixed end of the first telescopic member 3. The front end of the first telescopic member 3 extends forward to the bottom of the first swing arm 1, forming a telescopic supporting effect on the first swing arm 1, so that the first telescopic member 3 applies force from below to drive the first swing arm 1 to swing up and down.

[0032] Through the synchronous pushing of the two first telescopic members 3, the driving performance of the first swing arm 1 on the second swing arm 2 and the milling head 23 is enhanced, ensuring reliable support for the second swing arm 2 and the milling head 23 during the milling process, which helps to improve the milling efficiency.

[0033] In one possible implementation, please also refer to Figures 1 to 4 A lower connecting seat 13 is provided below the first swing arm 1 , and two second rotating shafts 32 are provided on the lower connecting seat 13 . The extended ends of the two first telescopic members 3 are rotatably connected to the two second rotating shafts 32 in a one-to-one correspondence.

[0034] In this embodiment, a lower connecting seat 13 is provided below the first swing arm 1, and the second rotating shaft 32 on the lower connecting seat 13 is used to respectively install the extended ends of the two first telescopic members 3, so that the first telescopic members 3 can smoothly push the first swing arm 1 to swing vertically, thereby meeting the milling and excavation operations at different height positions of the tunnel.

[0035] In one possible implementation, please also refer to Figures 1 to 4 An upper connecting seat 14 is provided above the first swing arm 1, and a second hinge shaft 21 is provided at the front end of the first swing arm 1 and is hinged to the rear end of the second swing arm 2. The second swing arm 2 is hinged to the front end of the first swing arm 1, and the upper connecting seat 14 provided above the first swing arm 1 can be used to install the fixed end of the second telescopic member 4, and the milling head 23 is pushed by the extended end of the second telescopic member 4, so that the milling head 23 can be adjusted in angle, so as to act on the tunnel plane at a better angle, and ensure good milling operation.

[0036] In some embodiments, please refer to Figures 1 to 4 The rear end of the second swing arm 2 is provided with an extension part 22, and the extended end of the second telescopic member 4 is rotatably connected to the rear end of the extension part 22 through the third rotating shaft 41. The extension part 22 provided at the rear end of the second swing arm 2 is used to be connected to the extended end of the second telescopic member 4, so that the second telescopic member 4 drives the extension part 22 to drive the second swing arm 2. The provision of the extension part 22 can effectively reduce the space occupied by the structure, ensure a good driving effect, and meet the swing amplitude requirements of the second swing arm 2.

[0037] In one possible implementation, please also refer to Figures 1 to 4 A connecting arm 7 is also hinged between the third telescopic member 5 and the milling head 23. The connecting arm 7 and the third telescopic member 5 are rotatably connected through an auxiliary rotating shaft 71. A limit swing rod 72 is also provided between the auxiliary rotating shaft 71 and the front end of the second swing arm 2. The setting of the connecting arm 7 can realize the introductory drive of the milling head 23. Compared with the structure in which the third telescopic member 5 is directly connected to the milling head 23, this setting can effectively reduce the layout space of the third telescopic member 5, avoid the position interference between the third telescopic member 5 and the inner wall of the tunnel during the milling operation, and at the same time increase the swing angle range of the milling head 23, improve the rationality of the structural layout, and reduce material consumption.

[0038] In some embodiments, please refer to Figures 1 to 4 There are two limit swing rods 72, which are symmetrically arranged on both sides of the second swing arm 2. The front ends of the two limit swing rods 72 are hinged to the two ends of the auxiliary shaft 71 in a one-to-one correspondence. There is one limit swing rod 72 on each side of the second swing arm 2, which effectively limits the auxiliary shaft 71 and ensures the stability and order of the driving action.

[0039] In one possible implementation, please also refer to Figures 1 to 4There are two limiting tubes 6, which are respectively located on both sides of the first swing arm 1. The two limiting tubes 6 are respectively used to limit the pipelines of the second telescopic member 4 and the milling head 23. A number of limiting seats 8 for limiting the limiting tubes 6 are respectively provided on both sides of the first swing arm 1.

[0040] In this embodiment, a limiting tube 6 is provided on both sides of the first swing arm 1, one of the limiting tubes 6 is passed through a pipeline of the second telescopic member 4, and the other limiting tube 6 is passed through a pipeline of the milling head 23, which can respectively provide good protection for the above-mentioned pipelines.

[0041] The position of the pipeline located at the first articulated axis 12 and the second articulated axis 21 is set as a hose structure, which can be telescopically adjusted following the swing of the second swing arm 2 and the milling head 23. The limit seat 8 can limit and fix the limit tube 6 to ensure that the limit tube 6 and the first swing arm 1 swing up and down synchronously to avoid problems such as entanglement of the pipeline.

[0042] In some embodiments, please refer to Figures 1 to 4 The limiting seat 8 includes a supporting rod 81 connected to the side of the first swing arm 1 and extending outward, and a downward pressure arc seat 82 hinged on the first swing arm 1. The downward pressure arc seat 82 is located above the supporting rod 81 and encloses a space for limiting the position of the pipe 6 with the supporting rod 81. The downward pressure arc seat 82 is connected to the supporting rod 81 through a connecting piece 83. The downward pressure arc seat 82 fixes the pipeline on the supporting rod 81, and the downward pressure arc seat 82 is fixed above the supporting rod 81 through the connecting piece 83, so as to ensure the stability of the position of the limiting pipe 6 and realize the effective position limiting of the pipeline.

[0043] Based on the same utility model concept, the embodiment of the present application also provides a milling excavator, which includes a milling excavator reinforcement arm. The milling excavator drives the first swing arm 1 synchronously through two first telescopic members 3, thereby improving the force performance of the first swing arm 1, enhancing the operation capacity of the first swing arm 1, ensuring the stability and smoothness of the milling excavation operation, and helping to improve the construction efficiency. The limiting pipe 6 is used for passing the pipeline, which can effectively limit and protect the pipeline, avoid the problem of the pipeline being entangled with the external components during the milling excavation operation, and ensure the smooth progress of the operation.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Milling reinforcement arm, characterized in that: The invention comprises a first swing arm (1) hinged to the front side of a machine body (9), a second swing arm (2) hinged to the front end of the first swing arm (1), and a milling head (23) hinged to the front end of the second swing arm (2); a first telescopic member (3) hinged to the machine body (9) is provided below the first swing arm (1); a telescopic end of the first telescopic member (3) is hinged to the bottom of the first swing arm (1); a second telescopic member (4) hinged to the rear end of the first swing arm (1) is provided above the first swing arm (1); a fixed end of the second telescopic member (4) is hinged to the top of the first swing arm (1); a third telescopic member (5) hinged to the milling head (23) is provided above the second swing arm (2); a fixed end of the third telescopic member (5) is hinged to the top of the second swing arm (2); Wherein, two first telescopic members (3) are arranged in parallel, and the two first telescopic members (3) are arranged at intervals in the width direction of the body (9); and limiting tubes (6) for pipelines to pass through are respectively arranged on both sides of the first swing arm (1); and the limiting tubes (6) are arranged along the extension direction of the first swing arm (1).

2. The milling reinforcement arm according to claim 1, characterized in that: The first swing arm (1) is mounted on the front side of the machine body (9) via a mounting base (11); the mounting base (11) has a first hinge shaft (12) extending horizontally and a first rotating shaft (31) located below the first hinge shaft (12); the rear end of the first swing arm (1) is rotatably connected to the first hinge shaft (12); and the fixed end of the first telescopic member (3) is rotatably connected to the first rotating shaft (31).

3. The milling reinforcement arm according to claim 1, characterized in that: A lower connecting seat (13) is provided below the first swing arm (1), and two second rotating shafts (32) are provided on the lower connecting seat (13). The extended ends of the two first telescopic members (3) are rotatably connected to the two second rotating shafts (32) in a one-to-one correspondence.

4. The milling reinforcement arm according to claim 1, characterized in that: An upper connecting seat (14) is provided above the first swing arm (1), and a second hinge shaft (21) hinged to a rear end of the second swing arm (2) is provided at the front end of the first swing arm (1).

5. The milling reinforcement arm according to claim 4, characterized in that: An extension part (22) is provided at the rear end of the second swing arm (2), and the extended end of the second telescopic member (4) is rotatably connected to the rear end of the extension part (22) via a third rotating shaft (41).

6. The milling reinforcement arm according to claim 1, characterized in that: A connecting arm (7) is also hinged between the third telescopic member (5) and the milling head (23); the connecting arm (7) and the third telescopic member (5) are rotationally connected via an auxiliary rotating shaft (71); and a limiting swing rod (72) is also provided between the auxiliary rotating shaft (71) and the front end of the second swing arm (2).

7. The milling reinforcement arm according to claim 6, characterized in that: Two of the limit swing rods (72) are provided, and the two limit swing rods (72) are symmetrically arranged on both sides of the second swing arm (2), and the front ends of the two limit swing rods (72) are hinged to the two ends of the auxiliary rotating shaft (71) in a one-to-one correspondence.

8. The milling reinforcement arm according to any one of claims 1 to 7, characterized in that: Two of the position limiting tubes (6) are provided, and the two position limiting tubes (6) are respectively located on both sides of the first swing arm (1). The two position limiting tubes (6) are respectively used to limit the pipelines of the second telescopic member (4) and the milling head (23). A plurality of position limiting seats (8) for limiting the position limiting tubes (6) are respectively provided on both sides of the first swing arm (1).

9. The milling reinforcement arm according to claim 8, characterized in that: The limiting seat (8) comprises a supporting rod (81) connected to the side of the first swing arm (1) and extending outward, and a downward pressure arc seat (82) hinged on the first swing arm (1); the downward pressure arc seat (82) is located above the supporting rod (81) and encloses a space for the limiting pipe (6) line together with the supporting rod (81); the downward pressure arc seat (82) is connected to the supporting rod (81) via a connecting piece (83).

10. A milling machine, characterized in that: The milling machine comprises the milling reinforcement arm according to any one of claims 1-9.

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