CN218971197U

CN218971197U - Longitudinal milling and digging head for mini-excavator

Info

Publication number: CN218971197U
Application number: CN202320233505.7U
Authority: CN
Inventors: 刘德利
Original assignee: Jining Kaidiwo Heavy Industry Technology Co ltd
Current assignee: Jining Kaidiwo Heavy Industry Technology Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-05-05
Anticipated expiration: 2033-02-16

Abstract

The utility model discloses a longitudinal milling and digging head for a mini excavator, which comprises a machine case, wherein the bottom end of the machine case is provided with a machine head, the machine head is provided with a plurality of installation seats which are uniformly distributed in a spiral way, each installation seat is internally and movably provided with a positioning rod, one end of each positioning rod is provided with a milling and digging tooth, a cavity is arranged in each installation seat, a sleeve is internally and slidably arranged in each cavity, a connecting plate is arranged in each sleeve, a connecting rod is arranged on each connecting plate, a handle is arranged on each connecting rod, the outer wall of each connecting rod is provided with a screw thread, the screw threads are connected in one end of each installation seat far away from the milling and digging tooth, the positioning rods are inserted into the installation seats, and the handles are rotated to enable the connecting rods to push the sleeves to move in the cavities through guiding of the inner walls of the cavities, so that balls are mutually close to clamp and fix the positioning rods, and further realize the installation and fixation of the milling and digging tooth.

Description

Longitudinal milling and digging head for mini-excavator

Technical Field

The utility model relates to the technical field of mini-excavators, in particular to a longitudinal milling head for a mini-excavator.

Background

The milling and digging machine is remarkably effective in the process of dismantling concrete walls with small thick steel bars in a building to mill foundation and concrete slabs, can realize the dual functions of a hydraulic breaking hammer and a hydraulic clamp, has small particle size of the milled materials, can be directly used as backfill, can be used for milling asphalt concrete and cement concrete pavements for other more purposes, can replace expensive pavement milling machines, can complete the large-depth milling and digging operation with the failure of the pavement milling machine, can effectively remove all barriers such as rocks, reinforced concrete, hard soil, frozen soil, tree roots and the like encountered in construction by one milling and digging machine in the construction of highway subgrade, and can be installed on any type of hydraulic excavator.

However, the existing longitudinal milling head for the mini excavator has a small volume, so that the volume of the longitudinal milling head is reduced, but the existing milling teeth are installed and disassembled in a knocking mode usually, the service life of the milling teeth is easy to reduce due to the collision generated by knocking, so that the milling teeth with small volume are inconvenient to install, and therefore, the longitudinal milling head for the mini excavator is needed to meet the demands of people.

Disclosure of Invention

The utility model aims to provide a longitudinal milling head for a mini-excavator, which is used for solving the problems that the conventional milling teeth provided in the background art are usually installed and disassembled in a knocking way, the service life of the milling teeth is easy to be reduced due to collision caused by knocking, and the milling teeth with smaller volume are inconvenient to install.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a longitudinal milling digs head for mini-excavator, includes the quick-witted case, the bottom of machine case is provided with the aircraft nose, is provided with a plurality of mount pad that is spiral evenly distributed on the aircraft nose, equal movable mounting has the locating lever in every mount pad, and milling teeth of digging are installed to the one end of locating lever, set up the cavity in the mount pad, slidable mounting has the sleeve in the cavity, installs the connecting plate in the sleeve, installs the connecting rod on the connecting plate, installs the handle on the connecting rod, is provided with the screw thread on the outer wall of connecting rod, screw thread threaded connection is in the one end of keeping away from milling teeth of digging at the mount pad, slidable mounting has a plurality of ball between sleeve and the cavity, and the ball is circumference evenly distributed, the locating lever is located the one end that a plurality of ball is close to each other.

Preferably, one end of the positioning rod, which is far away from the milling tooth, is conical, one end of the mounting seat is provided with a mounting hole, the mounting hole extends into the sleeve, and the inner diameter of the mounting hole is communicated with the maximum outer diameter of the positioning rod.

Preferably, the cross section of the inner wall of the cavity is wedge-shaped, and the outer wall of the sleeve is mutually parallel and matched with the inner wall of the cavity.

Preferably, a conical hole is formed in the center of the connecting plate, and the conical outer wall section of the positioning rod is fit in the conical hole.

Preferably, the connecting rod is close to one end of the connecting plate and has been seted up and accomodate the hole, and the toper section of locating lever is located and accomodates the hole, accomodates the one side inner wall that is close to the handle of hole and contacts with the toper top of locating lever.

Preferably, the outer wall of the sleeve is provided with a plurality of positioning holes, the positioning holes penetrate through the inner wall of the sleeve, and each ball is respectively positioned in the corresponding positioning hole.

Preferably, the outer wall of the positioning rod is provided with a positioning groove, the positioning groove is mutually matched with the ball, and the positioning groove is positioned at the maximum outer diameter of the conical section of the positioning rod.

The beneficial effects of the utility model are as follows:

according to the utility model, the positioning rod is inserted into the mounting seat, the handle is rotated, so that the connecting rod pushes the sleeve to move in the cavity, and the balls are close to each other through the guidance of the inner wall of the cavity, so that the positioning rod is clamped and fixed, and the installation and fixation of milling and digging teeth are realized.

Drawings

Fig. 1 is a schematic structural view of a longitudinal milling head for a mini-excavator according to the present utility model;

fig. 2 is a schematic view of a mounting seat of a longitudinal milling head for a mini-excavator according to the present utility model;

FIG. 3 is a schematic side view of a positioning rod of a longitudinal milling head for a mini-excavator according to the present utility model;

FIG. 4 is a schematic top view of a cross-sectional view of a ball of a longitudinal milling head for a mini-excavator according to the present utility model;

fig. 5 is a schematic diagram of a connection structure of a milling tooth and a positioning rod of a longitudinal milling head for a mini-excavator.

In the figure: 1. a chassis; 2. a machine head; 3. a mounting base; 4. a positioning rod; 5. milling and digging teeth; 6. a cavity; 7. a sleeve; 8. a connecting plate; 9. a connecting rod; 10. a handle; 11. screw threads; 12. a ball; 13. a mounting hole; 14. a tapered bore; 15. a receiving hole; 16. positioning holes; 17. and a positioning groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-5, a longitudinal milling head for a mini excavator comprises a case 1, a machine head 2 is arranged at the bottom end of the case 1, a plurality of installation seats 3 which are uniformly distributed in a spiral manner are arranged on the machine head 2, a positioning rod 4 is movably arranged in each installation seat 3, one end of the positioning rod 4 is provided with a milling tooth 5, a cavity 6 is arranged in the installation seat 3, a sleeve 7 is slidably arranged in the cavity 6, a connecting plate 8 is arranged in the sleeve 7, a connecting rod 9 is arranged on the connecting plate 8, a handle 10 is arranged on the connecting rod 9, a screw tooth 11 is arranged on the outer wall of the connecting rod 9, the screw tooth 11 is in threaded connection with one end of the installation seat 3 which is far away from the milling tooth 5, a plurality of balls 12 are slidably arranged between the sleeve 7 and the cavity 6, the balls 12 are uniformly distributed in a circumference manner, the positioning rod 4 is positioned at one end of the plurality of balls 12 which are close to each other, when the milling teeth 5 need regular maintenance or replacement, the handle 10 is reversely rotated, the connecting rod 9 drives the screw teeth 11 to reversely rotate, the sleeve 7 moves towards the handle 10 through connection of the connecting plate 8, the sleeve 7 drives the balls 12 to move at the moment, gaps between the balls 12 become large until the milling teeth 5 bring the positioning rods 4 out, disassembly of the milling teeth 5 is achieved, after the new milling teeth 5 are replaced, the positioning rods 4 are inserted into the mounting seats 3, the handle 10 is positively rotated, the sleeve 7 moves towards the direction of the milling teeth 5, the balls 12 are driven to approach each other, the positioning rods 4 are clamped and fixed, installation and fixation of the milling teeth 5 are achieved, the milling teeth 5 are simple in structure and convenient to operate, the installation and disassembly efficiency is high, and damage caused by the traditional milling teeth 5 is avoided.

Referring to fig. 3, in this embodiment, one end of the positioning rod 4 away from the milling tooth 5 is tapered, one end of the mounting seat 3 is provided with a mounting hole 13, the mounting hole 13 extends into the sleeve 7, the inner diameter of the mounting hole 13 is communicated with the maximum outer diameter of the positioning rod 4, and the mounting hole 13 facilitates the sliding of the positioning rod 4, so that the mounting and dismounting of the milling tooth 5 are facilitated.

Referring to fig. 3, in this embodiment, the cross section of the inner wall of the cavity 6 is wedge-shaped, the outer wall of the sleeve 7 and the inner wall of the cavity 6 are mutually parallel and matched, and the wedge-shaped inclined planes of the cavity 6 and the sleeve 7 realize that the movement of the sleeve 7 promotes the mutual extrusion and separation between the balls 12, thereby realizing the clamping and releasing of the positioning rod 4.

Referring to fig. 3, in this embodiment, a tapered hole 14 is formed in the center of the connecting plate 8, the tapered outer wall section of the positioning rod 4 is adapted in the tapered hole 14, and the tapered hole 14 is adapted to the tapered outer wall of the positioning rod 4 to provide support for the positioning rod 4, so as to prevent the positioning rod 4 from performing one-side axial displacement.

Referring to fig. 3, in this embodiment, a receiving hole 15 is formed at one end of the connecting rod 9 near the connecting plate 8, the tapered section of the positioning rod 4 is located in the receiving hole 15, one side inner wall of the receiving hole 15 near the handle 10 contacts with the tapered top end of the positioning rod 4, and the receiving hole 15 provides a receiving space for the positioning rod 4 and further prevents the positioning rod 4 from performing one side axial displacement.

Referring to fig. 3-4, in this embodiment, a plurality of positioning holes 16 are formed on the outer wall of the sleeve 7, the positioning holes 16 penetrate through to the inner wall of the sleeve 7, each ball 12 is located in a corresponding positioning hole 16, the positioning holes 16 provide positioning for the balls 12, the balls 12 are ensured to move on the same position all the time, and a space for the balls 12 to pass through the sleeve 7 is provided and is adapted to the wedge-shaped inclined plane of the cavity 6.

Referring to fig. 3 and 5, in this embodiment, a positioning groove 17 is formed on the outer wall of the positioning rod 4, the positioning groove 17 and the balls 12 are mutually adapted, the positioning groove 17 is located at the maximum outer diameter of the conical section of the positioning rod 4, when the balls 12 are mutually close, the positioning groove 17 provides a space for clamping the balls 12, and limits the two sides of the positioning rod 4 in the axial direction, so that the positioning rod 4 is fixed, and the milling teeth 5 are installed and fixed.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. The utility model provides a longitudinal milling dig head for mini-excavator, includes quick-witted case (1), its characterized in that: the machine is characterized in that the machine head (2) is arranged at the bottom end of the machine case (1), a plurality of installation seats (3) which are uniformly distributed in a spiral manner are arranged on the machine head (2), a positioning rod (4) is movably installed in each installation seat (3), a milling tooth (5) is installed at one end of each positioning rod (4), a cavity (6) is formed in each installation seat (3), a sleeve (7) is slidably installed in each cavity (6), a connecting plate (8) is installed in each sleeve (7), a connecting rod (9) is installed on each connecting plate (8), a handle (10) is installed on each connecting rod (9), threads (11) are connected in one end, far away from the milling tooth (5), of each installation seat (3), a plurality of balls (12) are slidably installed between each sleeve (7) and each cavity (6), the balls (12) are uniformly distributed in the circumference, and each positioning rod (4) is located at one end, close to each other, of the balls (12).

2. The longitudinal milling head for a mini-excavator according to claim 1, wherein: one end of the locating rod (4) far away from is tapered, one end of the milling tooth (5) is provided with a mounting hole (13) at one end of the mounting seat (3), the mounting hole (13) extends into the sleeve (7), and the inner diameter of the mounting hole (13) is communicated with the maximum outer diameter of the locating rod (4).

3. The longitudinal milling head for a mini-excavator according to claim 1, wherein: the cross section of the inner wall of the cavity (6) is wedge-shaped, and the outer wall of the sleeve (7) is mutually parallel and matched with the inner wall of the cavity (6).

4. The longitudinal milling head for a mini-excavator according to claim 1, wherein: a conical hole (14) is formed in the center of the connecting plate (8), and the conical outer wall section of the positioning rod (4) is fit in the conical hole (14).

5. The longitudinal milling head for a mini-excavator according to claim 1, wherein: one end of the connecting rod (9) close to the connecting plate (8) is provided with a storage hole (15), the conical section of the positioning rod (4) is positioned in the storage hole (15), and the inner wall of one side of the storage hole (15) close to the handle (10) is contacted with the conical top end of the positioning rod (4).

6. The longitudinal milling head for a mini-excavator according to claim 1, wherein: a plurality of positioning holes (16) are formed in the outer wall of the sleeve (7), the positioning holes (16) penetrate through the inner wall of the sleeve (7), and each ball (12) is located in the corresponding positioning hole (16).

7. The longitudinal milling head for a mini-excavator according to claim 1, wherein: the outer wall of the positioning rod (4) is provided with a positioning groove (17), the positioning groove (17) is mutually matched with the ball (12), and the positioning groove (17) is positioned at the maximum outer diameter of the conical section of the positioning rod (4).