Chassis structure of excavator

Abstract

The utility model discloses a chassis structure of an excavator, which belongs to the field of chassis structures of excavators, and comprises an upper base body and two baffle plates, the upper base body comprises two channel steels, at least three U-shaped frames are respectively welded on the surfaces of one sides of the two channel steels, and a connecting frame is bolted between the U-shaped frames arranged between the two channel steels. A lower base body is installed at the bottom of the upper base body, a connecting mechanism is assembled between the upper base body and the lower base body, and a fixing column is welded between the surfaces of the lower base body; the upper base body and the lower base body are integrally fixed between the two baffles, mounting grooves are formed in the surfaces of the bottoms of the baffles, connecting rods are bolted in the mounting grooves, damping rods are mounted on the surfaces, in the mounting grooves, of the connecting rods, and the ends of the damping rods are fixedly connected with pressing plates. The excavator chassis structure is optimized, a split type structure is adopted, and the excavator chassis structure and the split type structure are matched with each other to form a sufficient and good protection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator chassis structures, in particular to an excavator chassis structure. Background Art

[0002] An excavator is an earth-moving machine that uses a bucket to dig materials above or below the surface of the machine and load them into a transport vehicle or unload them to a stockpile. The materials excavated by the excavator are mainly soil, coal, silt, and pre-loosened soil and rocks.

[0003] Application No. CN202021827972.5 discloses a chassis structure for an excavator, including a mounting plate, walking components are arranged on both sides of the mounting plate, a storage component is fixedly installed at one end of the walking component, a translation component is arranged on the top of the mounting plate, a mobile platform is fixedly installed on the inner side of the translation component, and a rotating seat is fixedly installed on the top of the mobile platform. The device can control the upper part of the excavator to move forward and backward without moving the bottom structure of the excavator through the translation component fixedly installed on the surface of the mounting plate, which expands the operating range of the excavator to a certain extent, simplifies the control of the equipment during operation, and improves the work efficiency to a certain extent. Through the drawer arranged on one side of the device, it can realize the storage of commonly used tools and items, which is convenient for the staff to take commonly used tools and items during production and processing, and improves the storage function of the equipment itself.

[0004] However, the following problems still exist: in the overall structure of the small diesel excavator, it is necessary to ensure the stability of the center of gravity and the safety of the overall assembly structure. The chassis compression structure of the utility model is relatively simple, and during continuous operation, it may cause adverse effects on the overall rigidity of the excavator equipment due to external collisions, and it is not convenient to carry out maintenance and repair work on it. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a chassis structure of an excavator, which optimizes the chassis structure of the excavator and adopts a split structure, which cooperate with each other to form a sufficient and good protection effect.

[0006] The utility model is realized through the following technical solutions:

[0007] It comprises an upper base and two baffles, the upper base comprises two channel steels, one side surface of the two channel steels is respectively welded with at least three U-shaped frames, a connecting frame is bolted between the U-shaped frames arranged between the two channel steels, a lower base is installed at the bottom of the upper base, a connecting mechanism is assembled between the upper base and the lower base, and a fixing column is welded between the surfaces of the lower base;

[0008] The upper base and the lower base are fixed in one piece between the two baffles, a mounting groove is provided on the bottom surface of the baffle, a connecting rod is bolted in the mounting groove, a damping rod is installed on the surface of the connecting rod in the mounting groove, the end of the damping rod is fixedly connected to the pressure plate, and the surface of the pressure plate contacts the inner wall of the mounting groove.

[0009] Furthermore, the connecting rods are symmetrically welded to the reinforcing rods, and the surfaces of the reinforcing rods are bolted and fixed to the bottom of the lower base.

[0010] Furthermore, both side surfaces of the pressure plate are connected to the auxiliary bracket via a damping shaft respectively, and the other end of the auxiliary bracket is connected and fixed to the inner wall surface of the mounting groove via a connecting piece.

[0011] Furthermore, the connecting mechanism includes a mounting frame, a fixing seat, a raised edge, an open groove, a fixing pin and a fixing piece. The surface of the mounting frame is provided with an opening, and the mounting frame is sleeved on the surface of the fixing seat through the opening. One side of the fixing seat is integrally formed with a raised edge, and the surface of the fixing seat at the raised edge is provided with an open groove. The surface of the fixing seat at the raised edge is welded to the fixing piece, the fixing piece is bolted to the surface of the upper base, and the mounting frame is bolted to the surface of the lower base.

[0012] Furthermore, the fixing pin passes through the surface of the opening groove on the raised edge and is key-connected with the upper base.

[0013] Furthermore, both side surfaces of the fixing seat are provided with slide grooves, and the mounting frame is integrally formed with an insert block at the opening, and the mounting frame is plugged into the slide grooves on the fixing seat through the cooperation of the insert block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model optimizes the chassis structure of the excavator and adopts a split structure. The central part for assembling main equipment is made of composite layered steel structure materials, which cooperate with each other to form a fully good protection effect, and auxiliary protection structures are symmetrically arranged on both sides, which can provide sufficient protection and relief for lateral pressure and stress, further ensuring overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the upper base and the lower base of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the bottom of the baffle of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connection mechanism of the utility model.

[0020] In the figure: 1. upper base; 2. channel steel; 3. U-shaped frame; 4. connecting frame; 5. lower base; 6. fixing column; 7. connecting mechanism; 71. mounting frame; 72. fixing seat; 73. raised edge; 74. opening groove; 75. fixing pin; 76. fixing piece; 8. baffle; 9. connecting rod; 10. reinforcing rod; 11. mounting groove; 12. damping rod; 13. pressure plate; 14. auxiliary bracket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 , the utility model provides embodiments:

[0023] It includes an upper base 1 and two baffles 8. The upper base 1 includes two channel steels 2. At least three U-shaped frames 3 are welded to one side surface of the two channel steels 2. A connecting frame 4 is bolted between the U-shaped frames 3 arranged between the two channel steels 2. A lower base 5 is installed at the bottom of the upper base 1. A connecting mechanism 7 is assembled between the upper base 1 and the lower base 5. Fixed columns 6 are welded between the surfaces of the lower base 5.

[0024] The connection mechanism 7 includes a mounting frame 71, a fixing seat 72, a raised edge 73, an open slot 74, a fixing pin 75 and a fixing member 76. The surface of the mounting frame 71 is provided with an opening, and the mounting frame 71 is sleeved on the surface of the fixing seat 72 through the opening. One side of the fixing seat 72 is integrally formed with a raised edge 73, and the surface of the fixing seat 72 at the raised edge 73 is provided with an open slot 74. The surface of the fixing seat 72 at the raised edge 73 is welded with a fixing member 76, and the fixing member 76 is bolted to the surface of the upper substrate 1, and the mounting frame 71 is bolted to the surface of the lower substrate 5. The setting of the connection mechanism 7 effectively improves the overall connection performance, and the number of connection mechanisms 7 can be increased or reduced according to needs to control the compression and impact resistance between the upper substrate 1 and the lower substrate 5, and enhance the overall stability. In the connection mechanism 7, the alignment relationship between the mounting frame 71 and the fixing seat 72 is firstly adopted to ensure the relevance of the overall structure, and then the overall assembly is carried out in conjunction with various connecting members and bolts. The structure is easy to disassemble and assemble at any time, and the overall safety can be fully guaranteed. The fixing pin 75 penetrates the surface of the opening groove 74 on the raised edge 73 and is keyed to the upper base 1. The fixing pin 75 structure is additionally provided to further assist the fixing relationship, so that the strength between the upper base 1 and the lower base 5 is improved. The surfaces of both sides of the fixing seat 72 are provided with sliding grooves, and the mounting frame 71 is integrally formed with an insert block at the opening. The mounting frame 71 is plugged into the corresponding sliding groove on the fixing seat 72 through the insert block. This structure ensures the matching effect between the fixing seat 72 and the mounting frame 71, and prevents the mounting frame 71 from separating from the fixing seat 72.

[0025] The upper base 1 and the lower base 5 are fixed in one piece between the two baffles 8. The bottom surface of the baffle 8 is provided with a mounting groove 11. A connecting rod 9 is bolted in the mounting groove 11. The connecting rods 9 are symmetrically welded with reinforcing rods 10. The surface of the reinforcing rod 10 is bolted and fixed to the bottom of the lower base 5. The reinforcing rod 10 is an integrated structure made of steel structural material. The reinforcing rod 10 structure is used to strengthen the supporting structure of the connecting rod 9, so that the overall structural strength is further enhanced to ensure the supporting effect. A damping rod 12 is installed on the surface of the connecting rod 9 in the mounting groove 11. The end of the damping rod 12 is fixedly connected to the pressure plate 13, and the surface of the pressure plate 13 contacts the inner wall of the mounting groove 11. The two side surfaces of the pressure plate 13 are respectively connected to the auxiliary bracket 14 through the damping shaft, and the other end of the auxiliary bracket 14 is connected and fixed to the inner wall surface of the mounting groove 11 through a connecting piece. An auxiliary bracket 14 is provided to cooperate with the pressure plate 13 to provide protection against lateral pressure, so that the overall chassis structure can effectively withstand pressure from all directions, ensuring overall safety and stability. When the side is under pressure, the pressure transmission will cause the pressure plate 13 to be partially compressed to provide protection, and cooperate with the two auxiliary brackets 14 on both sides to achieve further pressure resistance and protection.

[0026] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0027] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications to the shapes, structures, features and spirits described in the claims of the present invention should be included in the claims of the present invention.

Claims

1. A chassis structure of an excavator, comprising an upper base (1) and two baffles (8), characterized in that: The upper base (1) comprises two channel steels (2), one side surface of the two channel steels (2) is respectively welded with at least three U-shaped frames (3), a connecting frame (4) is bolted between the U-shaped frames (3) arranged between the two channel steels (2), a lower base (5) is installed at the bottom of the upper base (1), a connecting mechanism (7) is installed between the upper base (1) and the lower base (5), and a fixing column (6) is welded between the surfaces of the lower base (5); The upper base (1) and the lower base (5) are fixed in one piece between the two baffles (8); a mounting groove (11) is provided on the bottom surface of the baffle (8); a connecting rod (9) is bolted in the mounting groove (11); a damping rod (12) is installed on the surface of the connecting rod (9) in the mounting groove (11); the end of the damping rod (12) is fixedly connected to a pressure plate (13); and the surface of the pressure plate (13) contacts the inner wall of the mounting groove (11).

2. The chassis structure of an excavator according to claim 1, characterized in that: The connecting rods (9) are symmetrically welded to the reinforcing rods (10), and the surface of the reinforcing rods (10) is bolted and fixed to the bottom of the lower base (5).

3. The chassis structure of an excavator according to claim 1, characterized in that: The two side surfaces of the pressing plate (13) are respectively connected to the auxiliary bracket (14) via a damping shaft, and the other end of the auxiliary bracket (14) is connected and fixed to the inner wall surface of the installation groove (11) via a connecting piece.

4. The chassis structure of an excavator according to claim 1, characterized in that: The connecting mechanism (7) comprises a mounting frame (71), a fixing seat (72), a raised edge (73), an open groove (74), a fixing pin (75) and a fixing member (76); an opening is provided on the surface of the mounting frame (71); the mounting frame (71) is sleeved on the surface of the fixing seat (72) through the opening; a raised edge (73) is integrally formed on one side of the fixing seat (72); an open groove (74) is provided on the surface of the fixing seat (72) at the raised edge (73); the surface of the fixing seat (72) at the raised edge (73) is welded to the fixing member (76); the fixing member (76) is bolted to the surface of the upper base (1); and the mounting frame (71) is bolted to the surface of the lower base (5).

5. The chassis structure of an excavator according to claim 4, characterized in that: The fixing pin (75) penetrates the surface of the opening groove (74) on the raised edge (73) and is key-connected to the upper base (1).

6. The chassis structure of an excavator according to claim 4, characterized in that: Both side surfaces of the fixing seat (72) are provided with sliding grooves, and the mounting frame (71) is integrally formed with an insert block at the opening, and the mounting frame (71) is correspondingly plugged into the sliding grooves on the fixing seat (72) through the cooperation of the insert block.

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