CN214784331U - Limiting mechanism - Google Patents

Abstract

The utility model discloses a limiting mechanism, which is arranged between an upper mechanism and a lower mechanism of an excavator, the upper mechanism and the lower mechanism are rotationally connected through a slewing bearing, an upper limiting frame is arranged on the bottom surface of the upper mechanism connected with the slewing bearing, two lower limiting frames are detachably arranged on the lower mechanism, and the two lower limiting frames are arranged on the rotating path of the upper limiting frame; the lower limiting frame can be detached, the rotating angle of the excavator can be adjusted according to the requirements of working conditions, the lower limiting frame is used when the rotating angle is required to be limited, the lower limiting frame is detached when the rotating angle is not required to be limited, the excavator can be timely adjusted to adapt to more working requirements, the limiting mechanism is simple and easy to install and detach, the upper limiting frame and the lower limiting frame are simple in structure and low in manufacturing cost, and the excavator can operate under multiple working conditions.

Description

Limiting mechanism

Technical Field

The utility model relates to a stop gear belongs to the engineering machine tool field.

Background

In the prior art, an excavator generally has a slewing mechanism, and as can be seen from the attached drawings, an upper mechanism and a lower mechanism rotate relatively through the slewing mechanism. The slewing mechanism is a slewing bearing comprising an outer ring and an inner ring, the relative rotation angle of the outer ring and the inner ring is 360 degrees, but under special working conditions, the upper mechanism and the lower mechanism of the machine are not allowed to rotate relative to each other by 360 degrees, but have certain relative rotation angle requirements.

The existing limiting mechanism needs to be matched with an electric control system, the cost is high, the existing limiting mechanism is difficult to disassemble once being installed, the working environment of the excavator is not invariable, the working environment is limited by the fact that the rotating angle needs to be limited sometimes, and the large-angle rotation needs to be maintained sometimes, so that the limiting mechanism on the excavator is required to be more flexible.

Disclosure of Invention

The utility model aims to solve the technical problem that a simple structure, detachable stop gear are provided.

In order to solve the technical problem, the technical scheme of the utility model is that: a limiting mechanism comprises an upper mechanism and a lower mechanism, wherein the upper mechanism and the lower mechanism are rotatably connected through a slewing bearing, an upper limiting frame is detachably arranged on the bottom surface of the upper mechanism connected with the slewing bearing, two lower limiting frames are detachably arranged on the lower mechanism, and the two lower limiting frames are arranged on the rotating path of the upper limiting frame; the upper and lower limiting frame can be detached, the rotating angle of the excavator can be adjusted according to the requirements of working conditions, the upper limiting frame or the lower limiting frame is used when the rotating angle is limited, the upper limiting frame or the lower limiting frame is detached when the rotating angle is not limited, the excavator can be adjusted in time, and more working requirements can be met.

In some embodiments of the present invention, the lower mechanism is provided with a rotary supporting seat, the rotary supporting seat is arranged on the bottom frame, the bottom frame is fixedly connected with a fixing seat, and the fixing seat is detachably provided with a lower limiting frame; the fixing seat is arranged to facilitate installation or disassembly of the lower limiting frame.

In some embodiments of the present invention, the upper limiting frame comprises an upper mounting plate, the upper mounting plate is provided with an upper limiting plate, upper supporting plates are respectively arranged between two side surfaces of the upper part of the upper limiting plate and the upper mounting plate, and two side surfaces of the lower part of the upper limiting plate are upper limiting surfaces; the support plate has strengthened the shock resistance who goes up the spacing board in setting up, sets up spacing position into the face, has disperseed to go up the impact that the spacing board received at spacing in-process.

In some embodiments of the present invention, the lower limiting frame comprises a lower mounting plate, a lower limiting plate is arranged on the lower mounting plate, a lower supporting plate is arranged between one side surface of the lower limiting plate and the lower mounting plate, and the other side surface of the lower limiting plate is a lower limiting surface; the lower support plate is arranged to enhance the impact resistance of the lower limiting plate, the limiting part is arranged to be a surface, and the impact of the lower limiting plate on the limiting process is dispersed.

In some embodiments of the present invention, the upper limiting frame is disposed at the rear side of the rotation center of the upper mechanism, and the two lower limiting frames are disposed at the left and right sides of the front portion of the rotation center of the lower mechanism and symmetrically disposed; the rotating range of the movable arm is kept at the front side of the machine body, and the rotating angles towards the two sides are the same.

In some embodiments of the present invention, the two lower limiting surfaces are respectively overlapped with two sides of the rotation limiting angle; when the upper limiting surface rotates to the position of the lower limiting surface, the rotation of the upper limiting surface is blocked, the upper mechanism stops rotating, and the rotation of the upper mechanism is limited simply and effectively.

In some embodiments of the present invention, the slewing bearing includes a slewing bearing outer ring and a slewing bearing inner ring, and the slewing bearing outer ring and the slewing bearing inner ring can rotate relatively.

In some embodiments of the present invention, the inner ring of the slewing bearing is fixedly connected to the lower mechanism, and the outer ring of the slewing bearing is fixedly connected to the upper mechanism.

In some embodiments of the present invention, the upper limiting frame is fixedly mounted on the upper mechanism through bolts; and the bolts are adopted for fixing, so that the installation and the disassembly are convenient.

The utility model discloses an in some embodiments, the lower retainer passes through bolt fixed mounting on lower mechanism, adopts the bolt fastening, is convenient for install and dismantle.

Due to the adoption of the technical scheme, the beneficial effects are that: the self-defined control of the rotation angle of the excavator is realized, the installation and the disassembly of the limiting mechanism are simple and easy, the upper limiting frame and the lower limiting frame are simple in structure and low in manufacturing cost, and the excavator can operate under multiple working conditions.

Drawings

FIG. 1 is a schematic structural view of an excavator without a limiting device;

fig. 2 is an exploded view of an embodiment of the present invention;

fig. 3 is a schematic structural view of a limiting frame according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a lower retainer according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a limiting surface of a limiting frame according to an embodiment of the present invention;

fig. 6 is a schematic view of the installation positions of the upper and lower retainers according to an embodiment of the present invention.

In the figure: 1. an upper mechanism; 2. a lower mechanism; 3. a slewing bearing; 4. an upper limiting frame; 5. a lower limiting frame; 21. a chassis; 22. a rotary support base; 23. a fixed seat; 41. an upper mounting plate; 42. an upper limiting plate; 43. an upper support plate; 44. an upper limiting surface; 51. a lower mounting plate; 52. a lower limiting plate; 53. a lower support plate; 54. a lower limiting surface; 6. and (4) rotating to limit the angle.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; or may be a mechanical connection. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

Referring to the attached drawings, the limiting mechanism is installed between an upper mechanism 1 and a lower mechanism 2 of an excavator, the upper mechanism 1 and the lower mechanism 2 are rotatably connected through a slewing bearing 3, an upper limiting frame 4 is detachably arranged on the bottom surface, connected with the slewing bearing 3, of the upper mechanism 1, two lower limiting frames 5 are detachably arranged on the lower mechanism 2, and the two lower limiting frames 5 are arranged on the rotating path of the upper limiting frame 4.

Referring to the attached drawings, a rotary supporting seat 22 is arranged on a lower mechanism 2 of the device, the rotary supporting seat 22 is arranged on an underframe 21, a fixed seat 23 is fixedly connected to the underframe 21, a lower limiting frame 5 is detachably arranged on the fixed seat 23, and the installation position of the fixed seat 23 is determined according to a rotary limiting angle.

Referring to the attached drawings, an upper limiting frame 4 is arranged at the rear side of the rotation center of an upper mechanism 1, and two lower limiting frames 5 are respectively arranged at the left side and the right side of the front part of the rotation center of a lower mechanism 2 and are symmetrically arranged; after the upper limit surface 44 contacts the lower limit surface 54 during the rotation, the excavator upper mechanism 1 is prevented from further rotating, and the upper limit surface 44 and the lower limit surface 54 are matched with each other.

Referring to the drawings, the upper limiting frame 4 of the device comprises an upper mounting plate 41, an upper limiting plate 42 is arranged on the upper mounting plate 41, upper supporting plates 43 are respectively arranged between two sides of the upper part of the upper limiting plate 42 and the upper mounting plate 41, and upper limiting surfaces 44 are arranged on two sides of the lower part of the upper limiting plate 42.

Referring to the drawings, the lower limiting frame 5 of the device comprises a lower mounting plate 51, a lower limiting plate 52 is arranged on the lower mounting plate 51, a lower supporting plate 53 is arranged between one side of the lower limiting plate 52 and the lower mounting plate 51, and a lower limiting surface 54 is arranged on the other side of the lower limiting plate 52; the two upper limiting surfaces 44 are respectively matched with the two lower limiting surfaces 54 to complete rotation limitation.

Referring to the drawings, the slewing bearing 3 of the device comprises an outer ring and an inner ring which are rotationally connected, the outer ring is fixedly connected with an upper mechanism 1, and the inner ring is fixedly connected with a slewing bearing seat 22. Generally, the lower mechanism 2 is relatively fixed, that is, the inner ring of the slewing bearing 3 and the lower limiting frame 5 are also relatively fixed, and when the excavator works, the outer ring and the inner ring of the slewing bearing 3 rotate relatively, and simultaneously drive the upper limiting frame 4 and the lower limiting frame 5 to rotate relatively.

Referring to the attached drawings, when the outer ring and the inner ring of the slewing bearing 3 rotate relatively to each other to a certain angle, the upper limit frame 4 will contact with one of the lower limit frames 5, and the relative rotation of the outer ring and the inner ring of the slewing bearing 3 will be prevented from continuing, so that the upper mechanism 1 and the lower mechanism 2 stop rotating relatively to finally play a limiting role.

Referring to the attached drawings, an upper limiting frame 4 of the device is detachably arranged on an upper mechanism 1, a lower limiting frame 5 of the device is detachably arranged on a fixed seat 23, and the upper limiting frame 4 and the lower limiting frame 5 are arranged when an excavator needs to limit the rotation angle; when the excavator normally works, the upper limit frame 4 or the lower limit frame 5 can be detached, or the upper limit frame and the lower limit frame are detached, so that the excavator can adapt to various working conditions, convenience and rapidness are realized, and the economic benefit is improved.

Referring to the attached drawings, the positions of the fixing seats 23 arranged on the underframe 21 of the device are different, the required rotation limiting angle can be realized, multiple groups of fixing seats 23 can be installed according to the working conditions of frequent contact of the excavator, even multiple groups of components for installing the lower limiting frame 5 can be arranged on the fixing seats 23, the lower limiting frame 5 can be installed according to the working requirements of the excavator, and the rotation limiting angle of the excavator can be freely adjusted.

Above-mentioned embodiment is only the utility model discloses a one of them embodiment, in other embodiments, go up spacing 4, down spacing 5 and only demolish one of them effect that just can reach the contact spacing, when operational environment only need restrict the rotation angle of equipment one side, down spacing 5 also can only install one side, and the setting of mount pad 23 also can be made in a flexible way, has the combination of multiple difference.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a limiting mechanism, includes upper portion mechanism (1) and lower part mechanism (2), and upper portion mechanism (1) and lower part mechanism (2) rotate through slewing bearing (3) and are connected, its characterized in that, detachable is provided with spacing (4) on the bottom surface that upper portion mechanism (1) and slewing bearing (3) are connected, and detachable is provided with two spacing (5) down on lower part mechanism (2), and two spacing (5) down set up on the rotation path of last spacing (4).

2. The limiting mechanism according to claim 1, wherein the lower mechanism (2) comprises an underframe (21), a rotary support seat (22) is arranged on the underframe (21), the rotary support seat (22) is connected with the rotary support (3), a fixed seat (23) is fixedly connected to the underframe (21), and a lower limiting frame (5) is detachably arranged on the fixed seat (23).

3. The limiting mechanism according to claim 1, wherein the upper limiting frame (4) comprises an upper mounting plate (41), the upper mounting plate (41) is provided with an upper limiting plate (42), an upper support plate (43) is arranged between each of two side surfaces of the upper part of the upper limiting plate (42) and the upper mounting plate (41), and each of two side surfaces of the lower part of the upper limiting plate (42) is an upper limiting surface (44).

4. The limiting mechanism according to claim 1 or 2, wherein the lower limiting frame (5) comprises a lower mounting plate (51), a lower limiting plate (52) is arranged on the lower mounting plate (51), a lower supporting plate (53) is arranged between one side surface of the lower limiting plate (52) and the lower mounting plate (51), and the other side surface of the lower limiting plate (52) is a lower limiting surface (54).

5. The spacing mechanism according to claim 1, characterized in that the upper spacing frame (4) is arranged at the rear side of the rotation center of the upper mechanism (1), and the two lower spacing frames (5) are respectively arranged at the left and right sides of the front part of the rotation center of the lower mechanism (2) and are symmetrically arranged.

6. Stop mechanism according to claim 5, characterized in that the two lower stop faces (54) coincide with the two sides of the pivoting stop angle (6), respectively.

7. The spacing mechanism of claim 1 wherein said slewing bearing comprises an outer slewing bearing race and an inner slewing bearing race, said outer slewing bearing race and said inner slewing bearing race being relatively rotatable.

8. A spacing mechanism according to claim 7, characterized in that the inner ring of the slewing bearing is fixedly connected with the lower mechanism (2) and the outer ring of the slewing bearing is fixedly connected with the upper mechanism (1).

9. Spacing mechanism according to claim 1, characterized in that the upper spacing bracket (4) is mounted fixed to the upper mechanism (1) by means of bolts.

10. Stop mechanism according to claim 1, characterized in that the lower stop (5) is mounted by bolting to the lower mechanism (2).

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