Extensible excavator frame structure

Abstract

The utility model discloses an extensible excavator frame structure which comprises a middle frame, movable frames are arranged on the two sides of the middle frame, a sweeping mechanism is arranged on the top of the middle frame, a hydraulic extension mechanism is arranged between the middle frame and the two movable frames, and the hydraulic extension mechanism comprises two pairs of extension columns. The ends of each pair of expansion columns are fixedly connected with connecting bases, a guide rod is arranged between each pair of expansion columns, and the guide rods are fixedly connected with a fixing frame. According to the extensible excavator frame structure, a hydraulic cylinder drives a driven sliding seat and a driving sliding seat to move, the driven sliding seat and the driving sliding seat move to drive a connecting arm to move, the connecting arm moves to drive a connecting seat to move, the connecting seat moves to drive an extension column to move, and the extension column moves to drive a movable frame to move; therefore, the width can be expanded to meet the actual use requirement, and the use flexibility can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator frames, in particular to an expandable excavator frame structure. Background Technique

[0002] An excavator is an earthmoving machine that uses a bucket to excavate materials above or below the machine surface and loads them into transport vehicles or unloads them to a stockpile yard. The excavator frame is a component that provides support for the whole. In the prior art, the structure of the excavator frame is fixed and not convenient for expansion, making it difficult to meet the actual use requirements and the flexibility of use is not ideal enough.

[0003] For example, the patent publication number CN205499065U, specifically a lower frame of a hydraulic excavator, which belongs to a component on construction machinery. It mainly includes a left track box and a right track box, and the left track box and the right track box are connected by an X-shaped frame. The X-shaped frame includes plate A, plate B and a drum. Plate A and plate B are respectively fixedly connected to the drum; Plate B is formed by bending. The utility model has a simple structure, small welding amount and small overall deformation after welding, greatly reducing the production cost. The utility model is mainly used for hydraulic excavators, and there is the problem that the structure of the excavator frame is fixed and not convenient for expansion, making it difficult to meet the actual use requirements and the flexibility of use is not ideal enough. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an expandable excavator frame structure, which solves the problems that the structure of the excavator frame is fixed and not convenient for expansion, making it difficult to meet the actual use requirements and the flexibility of use is not ideal enough.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: An expandable excavator frame structure includes an intermediate frame, with movable frames provided on both sides of the intermediate frame, a cleaning mechanism provided on the top of the intermediate frame, and a hydraulic expansion mechanism provided between the intermediate frame and the two movable frames;

[0006] The hydraulic expansion mechanism includes two pairs of expansion columns. Each pair of two expansion columns has a connecting seat fixedly connected to the end. A guide rod is provided between each pair of two expansion columns. A fixed frame is fixedly connected to the guide rod. An active sliding seat and a driven sliding seat are slidably connected to the guide rod. Connecting arms are provided on both sides of the active sliding seat and the driven sliding seat. A hydraulic cylinder is fixedly connected to the end of the active sliding seat. A guide frame is provided at the bottom of the active sliding seat. A rotating shaft is rotatably connected inside the guide frame. A rotating gear is fixedly connected to the rotating shaft. A driving rack is provided at the bottom of the rotating gear. One end of the driving rack is fixedly connected to a connecting frame. Connecting tooth grooves are formed on the bottom surface of the driven sliding seat.

[0007] Preferably, the two pairs of the extension columns are fixedly connected to the two movable frames respectively, and the extension columns are slidably connected to the inner wall of the intermediate frame, so that the extension columns can drive the movable frames to move, thereby guiding the movement of the movable frames.

[0008] Preferably, the fixing frame is fixedly installed inside the intermediate frame, and the guide rod is detachably connected to the inner wall of the intermediate frame through the fixing frame, so that the guide rod can be fixed, thereby enabling the guide rod to play a guiding role.

[0009] Preferably, two ends of one pair of the connecting arms are respectively rotatably connected to the connecting seat and the driven sliding seat, and two ends of the other pair of the connecting arms are respectively rotatably connected to the connecting seat and the driving sliding seat, so that when the driving sliding seat and the driven sliding seat move, the connecting seat can be driven to move through the connecting arms.

[0010] Preferably, the two hydraulic cylinders are fixedly installed on the intermediate frame, the driving rack is meshed with the rotating gear, and the rotating gear is meshed with the driven sliding seat through the connecting tooth groove, so that the driving rack can drive the driven sliding seat to move in the opposite direction through the rotating gear.

[0011] Preferably, the guide frame is fixedly installed on the inner wall of the intermediate frame, one end of the connecting frame penetrates through the guide frame and is fixedly connected to the driving sliding seat, and the driving rack is slidably connected to the inner wall of the guide frame, so that the movement of the driving rack can be guided.

[0012] Preferably, the cleaning mechanism includes an installation ring, the installation ring is rotatably connected to the intermediate frame, the installation ring is fixedly connected with two fixing blocks, fixing holes are formed in the fixing blocks, and a plurality of cleaning plates are fixedly connected to the side surface of the installation ring, which can clean the soil on the intermediate frame.

[0013] The utility model provides an expandable excavator frame structure. Compared with the prior art, the following beneficial effects are achieved:

[0014] 1. For the expandable excavator frame structure, the hydraulic cylinders drive the driven sliding seat and the driving sliding seat to move, the movement of the driven sliding seat and the driving sliding seat drives the connecting arms to move, the movement of the connecting arms drives the connecting seat to move, the movement of the connecting seat drives the extension columns to move, and the movement of the extension columns drives the movable frames to move, so that the width can be expanded to meet the actual use requirements, thereby effectively improving the flexibility of use.

[0015] 2. For the expandable excavator frame structure, by fixing the fixing blocks at the bottom of the excavator, the rotation of the excavator drives the fixing blocks to rotate, the rotation of the fixing blocks drives the installation ring to rotate, and the rotation of the installation ring drives the cleaning plates to rotate, so that the soil on the intermediate frame can be cleaned, improving the convenience of cleaning. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the hydraulic expansion mechanism of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the connection between the hydraulic cylinder and the expansion column of the present utility model;

[0019] Figure 4 is the structural schematic diagram of the cleaning mechanism of the present utility model.

[0020] In the figure: 1, intermediate frame; 2, hydraulic expansion mechanism; 201, expansion column; 202, guide rod; 203, driven sliding seat; 204, driving sliding seat; 205, connecting arm; 206, hydraulic cylinder; 207, connecting frame; 208, driving rack; 209, rotating gear; 210, rotating shaft; 211, guide frame; 212, fixed frame; 213, connecting seat; 3, movable frame; 4, cleaning mechanism; 401, mounting ring; 402, fixed block; 403, fixing hole; 404, cleaning plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides a technical solution: a expandable excavator frame structure, including an intermediate frame 1, movable frames 3 are arranged on both sides of the intermediate frame 1, a cleaning mechanism 4 is arranged on the top of the intermediate frame 1, and a hydraulic expansion mechanism 2 is arranged between the intermediate frame 1 and the two movable frames 3. The width can be expanded through the hydraulic expansion mechanism 2 to meet the actual use requirements, thereby effectively improving the flexibility of use.

[0023] The hydraulic expansion mechanism 2 includes two pairs of expansion columns 201. The two pairs of expansion columns 201 are respectively fixedly connected to two movable frames 3, and the expansion columns 201 are slidably connected to the inner wall of the intermediate frame 1, so that the expansion columns 201 can drive the movable frames 3 to move, thereby playing a guiding role in the movement of the movable frames 3. A connecting seat 213 is fixedly connected to the end of each pair of two expansion columns 201. A guiding rod 202 is arranged between each pair of two expansion columns 201. A fixing frame 212 is fixedly connected to the guiding rod 202. The fixing frame 212 is fixedly installed inside the intermediate frame 1, and the guiding rod 202 is detachably connected to the inner wall of the intermediate frame 1 through the fixing frame 212, so that the guiding rod 202 can be fixed, and thus the guiding rod 202 can play a guiding role. A driving slide seat 204 and a driven slide seat 203 are slidably connected to the guiding rod 202. Connecting arms 205 are arranged on both sides of the driving slide seat 204 and the driven slide seat 203. Both ends of a pair of connecting arms 205 are respectively rotatably connected to the connecting seat 213 and the driven slide seat 203, and both ends of the other pair of connecting arms 205 are respectively rotatably connected to the connecting seat 213 and the driving slide seat 204, so that when the driving slide seat 204 and the driven slide seat 203 move, they can drive the connecting seat 213 to move through the connecting arms 205. A hydraulic cylinder 206 is fixedly connected to the end of the driving slide seat 204. A guiding frame 211 is arranged at the bottom of the driving slide seat 204. A rotating shaft 210 is rotatably connected inside the guiding frame 211. A rotating gear 209 is fixedly connected to the rotating shaft 210. A driving rack 208 is arranged at the bottom of the rotating gear 209. The two hydraulic cylinders 206 are fixedly installed on the intermediate frame 1. The driving rack 208 is meshed with the rotating gear 209, and the rotating gear 209 is meshed with the driven slide seat 203 through a connecting tooth groove, so that the driving rack 208 can drive the driven slide seat 203 to move in the opposite direction through the rotating gear 209. A connecting frame 207 is fixedly connected to one end of the driving rack 208. A connecting tooth groove is formed on the bottom surface of the driven slide seat 203. The connecting tooth groove is matched with the rotating gear 209. The guiding frame 211 is fixedly installed on the inner wall of the intermediate frame 1. One end of the connecting frame 207 penetrates through the guiding frame 211 and is fixedly connected to the driving slide seat 204, so that the driving slide seat 204 can drive the driving rack 208 to move through the connecting frame 207. The driving rack 208 is slidably connected to the inner wall of the guiding frame 211, so that it can play a guiding role in the movement of the driving rack 208.

[0024] Please refer to Figure 1 and Figure 4, the cleaning mechanism 4 includes a mounting ring 401 which is rotatably connected to the middle frame 1. The mounting ring 401 is fixedly connected with two fixing blocks 402. Fixing holes 403 are formed in the fixing blocks 402. A plurality of cleaning plates 404 are fixedly connected to the side surface of the mounting ring 401. By fixing the fixing blocks 402 to the bottom of the excavator, the rotation of the excavator drives the fixing blocks 402 to rotate. The rotation of the fixing blocks 402 drives the mounting ring 401 to rotate. The rotation of the mounting ring 401 drives the cleaning plates 404 to rotate, so that the soil on the middle frame 1 can be cleaned, improving the convenience of cleaning.

[0025] During operation, the hydraulic cylinder 206 drives the active sliding seat 204 to move. The movement of the active sliding seat 204 drives the connecting frame 207 to move. The movement of the connecting frame 207 drives the active rack 208 to move. The movement of the active rack 208 drives the driven rotating gear 209 to rotate. The rotation of the rotating gear 209 drives the driven sliding seat 203 to move in the opposite direction through the connecting tooth groove. The movement of the driven sliding seat 203 and the active sliding seat 204 drives the connecting arm 205 to move. The movement of the connecting arm 205 drives the connecting seat 213 to move. The movement of the connecting seat 213 drives the extension column 201 to move. The movement of the extension column 201 drives the movable frame 3 to move, so that the width can be expanded to meet the actual use requirements, thus effectively improving the flexibility of use.

[0026] Meanwhile, the content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. An expandable excavator frame structure, comprising an intermediate frame (1), characterized in that: Both sides of the intermediate frame (1) are provided with movable frames (3), the top of the intermediate frame (1) is provided with a cleaning mechanism (4), and a hydraulic expansion mechanism (2) is provided between the intermediate frame (1) and the two movable frames (3); The hydraulic expansion mechanism (2) comprises two pairs of expansion columns (201), each pair of two expansion columns (201) having ends fixedly connected to a connecting seat (213), a guide rod (202) being provided between each pair of two expansion columns (201), a fixing frame (212) being fixedly connected to the guide rod (202), an active slide seat (204) and a driven slide seat (203) being slidably connected to the guide rod (202), and connecting arms (205) being provided on both sides of the active slide seat (204) and the driven slide seat (203). ), the end of the active slide (204) is fixedly connected to a hydraulic cylinder (206), the bottom of the active slide (204) is provided with a guide frame (211), the guide frame (211) is rotatably connected to a rotating shaft (210) inside, the rotating shaft (210) is fixedly connected to a rotating gear (209), the bottom of the rotating gear (209) is provided with an active rack (208), one end of the active rack (208) is fixedly connected to a connecting frame (207), and a connecting tooth groove is provided on the bottom surface of the driven slide (203).

2. The expandable excavator frame structure according to claim 1, characterized in that: The two pairs of expansion columns (201) are respectively fixedly connected to the two movable frames (3), and the expansion columns (201) are slidably connected to the inner wall of the middle frame (1).

3. The expandable excavator frame structure according to claim 1, characterized in that: The fixing frame (212) is fixedly installed inside the intermediate frame (1), and the guide rod (202) is detachably connected to the inner wall of the intermediate frame (1) via the fixing frame (212).

4. The expandable excavator frame structure according to claim 1, characterized in that: Two ends of a pair of the connecting arms (205) are respectively rotatably connected to the connecting seat (213) and the driven slide seat (203), and two ends of the other pair of the connecting arms (205) are respectively rotatably connected to the connecting seat (213) and the active slide seat (204).

5. The expandable excavator frame structure according to claim 1, characterized in that: The two hydraulic cylinders (206) are fixedly mounted on the intermediate frame (1); the active rack (208) is meshed with the rotating gear (209); and the rotating gear (209) is meshed with the driven slide seat (203) via a connecting tooth groove.

6. The expandable excavator frame structure according to claim 1, characterized in that: The guide frame (211) is fixedly mounted on the inner wall of the intermediate frame (1); one end of the connecting frame (207) passes through the guide frame (211) and is fixedly connected to the active slide seat (204); and the active rack (208) is slidably connected to the inner wall of the guide frame (211).

7. The expandable excavator frame structure according to claim 1, characterized in that: The cleaning mechanism (4) comprises a mounting ring (401), the mounting ring (401) is rotatably connected to the intermediate frame (1), and the mounting ring (401) is fixedly connected to two fixing blocks (402).

8. The expandable excavator frame structure according to claim 7, characterized in that: The fixing block (402) is provided with a fixing hole (403), and a plurality of cleaning plates (404) are fixedly connected to the side surface of the mounting ring (401).

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