Narrow gauge crawler chassis

Abstract

The utility model discloses a narrow gauge crawler chassis which comprises a frame, supporting legs, a left crawler frame and a right crawler frame, the frame is connected with the left crawler frame or the right crawler frame through a connecting pin shaft, and a frame hook and a frame positioning pin shaft are arranged at the connecting position of the frame. A track frame positioning pin shaft, a track frame hook and a limiting block are arranged at the joint of the left track frame or the right track frame; the frame hook is connected with the track frame positioning pin shaft, and the frame positioning pin shaft is connected with the track frame hook. According to the novel narrow-gauge crawler chassis structure convenient to disassemble and assemble, two connecting positions are arranged at the connecting positions of the vehicle frame and the crawler frame, and disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the field of crawler cranes, in particular to a narrow-track crawler chassis. Background Art

[0002] A crawler crane refers to a crane that uses a crawler-tracked chassis. The frame refers to a multi-chamber box-type structure welded from sheet metal, and its primary function is to connect the left and right crawler frames and the turntable. The frame outriggers are primarily used for crane assembly and disassembly. They consist of an outrigger cylinder and an outrigger structure, one end of which is mounted on the frame with a pin, and the other end is equipped with a cylinder. The outriggers support the frame by extending and retracting the cylinder. The crawler outriggers are primarily used for crane assembly and disassembly. They consist of an outrigger shaft and an outrigger structure, one end of which is mounted on the crawler frame with a pin, and the other end is equipped with an outrigger shaft, which supports the chassis. The track gauge refers to the distance between the two crawlers on the chassis.

[0003] The crawler chassis plays the role of bearing the load from above, and is connected to the upper vehicle structure such as the slewing bearing, turntable, and arm. The crawler chassis generally consists of a vehicle frame, a left crawler frame, and a right crawler frame. For small-tonnage products, the bottom plate is generally transported as a whole and does not need to be disassembled. However, for products with a larger tonnage, the crawler chassis needs to be disassembled and transported, and the vehicle frame and crawler frame need to be separated. The existing crawler chassis track gauge is relatively wide. When the crawler frame is disassembled, there are 4 legs on the frame to support the chassis and install or remove the crawler. The installation order is to lift the frame legs, install the crawler frame on one side first, and then install the crawler frame on the other side. The disassembly order is to lift the entire chassis with the frame legs, remove the crawler frame on one side first, and then remove the crawler frame on the other side. However, in some special tracked vehicles, due to requirements such as passability, ground endurance, and multi-track applications, the track gauges of the two tracks are required to be narrow. In this case, the middle frame is also relatively narrow. If the frame legs are placed on a conventional chassis, the center distance of the legs is too close, the stability is insufficient, there is a risk of overturning, and the needs of disassembly and assembly cannot be met.

[0004] Therefore, it is necessary to develop a new narrow-track crawler chassis that is easy to disassemble and assemble to improve its applicability. Utility Model Content

[0005] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, the utility model provides a narrow-gauge crawler chassis and a new narrow-gauge crawler chassis structure that is easy to disassemble and assemble. Two connection positions are set at the connection position between the frame and the crawler frame to facilitate disassembly and assembly.

[0006] Technical solution: The utility model is a narrow-track crawler chassis, which is characterized by comprising a frame, a leg, a left crawler frame and a right crawler frame. The frame is connected to the left crawler frame or the right crawler frame through a connecting pin. The connection of the frame is provided with a frame hook and a frame positioning pin. The connection of the left crawler frame or the right crawler frame is provided with a crawler frame positioning pin, a crawler frame hook and a limit block. The frame hook is connected to the crawler frame positioning pin, and the frame positioning pin is connected to the crawler frame hook.

[0007] Wherein, both sides of the vehicle frame are connected to the left track frame and the right track frame respectively.

[0008] Wherein, the frame is installed at the frame installation position of the left track frame and the right track frame.

[0009] There are two supporting legs, and the frame is located between the two supporting legs.

[0010] Wherein, the support legs are installed at the support leg installation positions of the left track frame and the right track frame.

[0011] Wherein, the narrow track crawler chassis consisting of the vehicle frame, the supporting legs, the left crawler frame and the right crawler frame is installed on the crane.

[0012] Wherein, the crane is a crawler crane.

[0013] Beneficial Effects: Compared with the prior art, the present invention has the following significant advantages: Based on a large-tonnage crawler chassis, the present invention designs a new structure to meet the needs of chassis assembly and disassembly, while also reducing the cost of disassembling and assembling the chassis's support legs. The present invention has narrow-gauge crawler chassis with support legs installed on the inner side of the track frame, allowing the vehicle frame and another track frame to be installed simultaneously, resulting in a more rational structure and greater stability for chassis installation. Hooks and limit pins are respectively provided on the vehicle frame and track frame, enabling them to be connected to each other, facilitating chassis assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a structural diagram of the mounting position of the support legs and the mounting position of the frame of the present invention;

[0016] Figure 3 This is a schematic diagram of the installation structure of the support legs of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the vehicle frame of the present utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the utility model after installation;

[0019] Figure 6This is a schematic diagram of the exploded structure of the connection state between the crawler frame and the vehicle frame of the present invention;

[0020] Figure 7 This is a schematic diagram of the connection structure between the crawler frame and the vehicle frame of the present utility model;

[0021] In the figure, 1 is the frame; 2 is the support leg; 3 is the left track frame; 4 is the right track frame; 5 is the support leg installation position; 6 is the frame installation position; 7 is the frame hook; 8 is the frame locating pin; 9 is the track frame locating pin; 10 is the track frame hook; 11 is the limit block; and 12 is the connecting pin. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] The narrow-gauge crawler chassis of the present invention comprises a frame 1, a support leg 2, a left track frame 3 and a right track frame 4. The frame 1 is connected to the left track frame 3 or the right track frame 4 through a connecting pin 12. A frame hook 7 and a frame positioning pin 8 are provided at the connection of the frame 1. A crawler frame positioning pin 9, a crawler frame hook 10 and a limit block 11 are provided at the connection of the left track frame 3 or the right track frame 4. The frame hook 7 is connected to the crawler frame positioning pin 9, and the frame positioning pin 8 is connected to the crawler frame hook 10.

[0024] The vehicle frame 1 of the present invention is connected on both sides to the left and right crawler frames 3 and 4, respectively. The vehicle frame 1 is mounted at the vehicle frame mounting position 6 of the left and right crawler frames 3 and 4. There are two outriggers 2, with the vehicle frame 1 positioned between them. The outriggers 2 are mounted at the outrigger mounting positions 5 of the left and right crawler frames 3 and 4. The narrow-track crawler chassis consisting of the vehicle frame 1, outriggers 2, and the left and right crawler frames 3 and 4 is mounted on a crane. The crane is a crawler crane.

[0025] like Figure 1-5 When disassembling and assembling, place one side of the crawler track on the ground, install both legs 2 on the crawler frame, adjust the height of the legs 2 to ensure that the legs support the ground. The leg installation position 5 and the frame installation position 6 are placed on the same side. The frame 1 is installed on the crawler frame from the side of the leg 2. When the frame 1 and the crawler frame are installed, a connecting pin 12 and a limit block 11 are provided. After the frame 1 is installed on the crawler frame, the pin is pushed out to complete the connection between the frame 1 and the crawler frame. Then hang the other crawler frame on the pin of the frame 1, push out the pin on the other side of the frame 1, and complete the installation of the other crawler frame.

[0026] like Figure 6-7When the vehicle frame 1 is installed on the track frame, the track frame locating pin 9 is installed on the track frame, and the frame hook 7 on the vehicle frame 1 is hung on the track frame locating pin 9. The track frame is lowered to set a limit block 11. After the frame is installed in place, it prevents the vehicle frame 1 from rotating around the track frame locating pin 9. This can ensure that the frame 1 and the track frame connecting pin 9 are accurately positioned, facilitating the installation of the pin. When the track frame is installed on the vehicle frame 1, the frame locating pin 8 is installed on the vehicle frame 1, and the track frame hook 10 on the track frame is hung on the frame locating pin 8. Therefore, the vehicle frame 1 and the track frame can be connected and disassembled with each other.

[0027] This utility model, based on a large-tonnage crawler chassis, features a novel design to meet chassis assembly and disassembly needs while reducing the cost of disassembling and assembling the chassis' outriggers. The utility model features narrow-gauge crawler chassis with outriggers positioned inside the track frame, allowing for simultaneous installation of the vehicle frame and another track frame. This creates a more rational structure and facilitates chassis installation stability. Hooks and limit pins are provided on the vehicle frame and track frame, respectively, allowing for mutual attachment and facilitating chassis assembly and disassembly.

Claims

1. A narrow track crawler chassis, characterized by: The invention comprises a vehicle frame (1), a support leg (2), a left crawler frame (3) and a right crawler frame (4); the vehicle frame (1) is connected to the left crawler frame (3) or the right crawler frame (4) via a connecting pin (12); a vehicle frame hook (7) and a vehicle frame positioning pin (8) are provided at the connection of the vehicle frame (1); a crawler frame positioning pin (9), a crawler frame hook (10) and a limit block (11) are provided at the connection of the left crawler frame (3) or the right crawler frame (4); the vehicle frame hook (7) is connected to the crawler frame positioning pin (9), and the frame positioning pin (8) is connected to the crawler frame hook (10).

2. The narrow track crawler chassis according to claim 1, characterized in that: Both sides of the vehicle frame (1) are connected to the left crawler frame (3) and the right crawler frame (4) respectively.

3. The narrow track crawler chassis according to claim 1, characterized in that: The vehicle frame (1) is installed at the vehicle frame installation position (6) of the left crawler frame (3) and the right crawler frame (4).

4. The narrow track crawler chassis according to claim 1, characterized in that: The number of the supporting legs (2) is 2, and the vehicle frame (1) is located between the two supporting legs (2).

5. The narrow track crawler chassis according to claim 1, characterized in that: The support legs (2) are installed at the support leg installation positions (5) of the left crawler frame (3) and the right crawler frame (4).

6. The narrow track crawler chassis according to claim 1, characterized in that: The narrow track crawler chassis composed of the vehicle frame (1), the supporting legs (2), the left crawler frame (3) and the right crawler frame (4) is installed on a crane.

7. The narrow track crawler chassis according to claim 6, characterized in that: The crane is a crawler crane.

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