Backhoe boom for an engineering machine

Abstract

The application discloses a backhoe frame for engineering machinery, which comprises left-right symmetrical longitudinally arranged seat plates, upper and lower transversely arranged upper and lower hinge seats, and left-right symmetrical seat plates which are fixedly connected with the side of the upper hinge seat and the side of the lower hinge seat respectively; a sensor mounting seat is arranged above the seat plate, symmetrical shaft sleeves are arranged on the seat plate, and a mounting plate is fixedly arranged on the back of the seat plate. The application effectively integrates the working conditions of supporting legs and digging, has the automatic leveling function of supporting legs, increases the working range of the digging operation, improves the off-angle of the whole machine, greatly improves the working efficiency of the rescue operation, simultaneously changes the small components of the seat plate into the integral bent piece, improves the working efficiency, and reduces the welding stress.

Description

Technical Field

[0001] This invention relates to a backhoe frame for engineering machinery, belonging to the technical field of multi-functional rescue engineering equipment. Background Technology

[0002] In emergency rescue operations involving earthquakes, mudslides, building collapses, landslides, and other disasters, excavation and loading operations are frequently required. This includes digging, loading, pushing, and stacking materials, as well as clamping and dragging obstacles. These operations are used to clear roads, dredge landslide-dammed lakes, rescue people and objects buried in rubble, and clear debris. Therefore, multi-functional wheeled engineering vehicles are equipped with loading arms and excavating arms. Due to the limited working environment at typical rescue sites, the machine must be as compact as possible, with a large working range and good mobility. The chassis, serving as the base and supporting key components, must meet the installation functions of each system while also having a rational structure that facilitates the layout of these systems.

[0003] Wheeled engineering vehicles require a large departure angle to adapt to off-road conditions and maximum climbing angle. The backhoe frame is the structure that mounts the excavating device, and its design is directly related to the excavation operation parameters and the overall departure angle of the machine.

[0004] In the existing technology, the T-joint design of the base plate and lower hinge seat results in a small adjustment space and a small space for the rotary cylinder clamping installation and maintenance. The base plate is composed of multiple parts, forming a welded assembly. Summary of the Invention

[0005] Disadvantages of existing technology: Due to the limitations of its structural form, the position of the lower hinge seat directly affects the small departure angle and maximum ramp angle of the entire machine, resulting in limited maintenance space. There are also many types of parts, numerous welded joints, and relatively high welding stress.

[0006] The technical problem to be solved by this invention is to overcome the defects of the prior art and provide a backhoe frame for engineering machinery, including left and right seat plates, upper and lower hinged seats, sensor mounting seats, bent plates, and mounting plates. The left and right seat plates are arranged symmetrically longitudinally, and the upper and lower hinged seat plates are arranged laterally, and are welded into a whole. The upper and lower hinged plates have symmetrical welds, and the inner side and upper and lower sides of the seat plates are reasonably arranged. It meets the requirements of outrigger support and digging operation, effectively integrating outrigger ground support, digging arm rotation, and luffing. Under the premise of meeting strength and rigidity requirements, the structure is compact, the departure angle of the whole machine is increased, and the working range of emergency rescue is greatly improved.

[0007] The present invention adopts the following technical solution: a backhoe frame for engineering machinery, characterized in that it includes a seat plate arranged longitudinally with left and right sides, an upper hinge seat and a lower hinge seat arranged transversely with top and bottom sides, the left and right symmetrical seat plates being fixedly connected to the side of the upper hinge seat and the side of the lower hinge seat respectively; a sensor mounting seat is provided above the seat plate, and symmetrically distributed bushings are provided on the seat plate.

[0008] In a preferred embodiment, the base plate is a longitudinal support structure consisting of an upper hinge base and a lower hinge base.

[0009] In a preferred embodiment, a first bent plate and a second bent plate are fixedly installed inside the two seat plates, respectively, and are arranged parallel to the seat plates. The first bent plate and the second bent plate are used to help improve the strength and rigidity of the seat plates, and form a box-shaped structure with the seat plates, and are welded parallel to the seat plates.

[0010] In a preferred embodiment, the sensor mounting bases are symmetrically distributed on both sides and are used to mount sensors that detect the retracted position of the outriggers.

[0011] In a preferred embodiment, both the upper and lower hinge seats are used to mount the excavator's slewing frame to achieve the excavation action.

[0012] In a preferred embodiment, a mounting plate is fixedly provided on the back of the seat plate.

[0013] In a preferred embodiment, the mounting plate is used to clamp the rotary cylinder.

[0014] In a preferred embodiment, the bushing is used for hinge pin fixing.

[0015] In a preferred embodiment, the bushing passes through the seat plate and is welded to the seat plate.

[0016] As a preferred embodiment, the longitudinal support structure is a column structure with a U-shaped cross-section.

[0017] Compared to existing technologies, the advantages of this invention are as follows: This invention addresses the technical shortcomings of existing technologies, such as limited structural form, where the position of the lower hinge seat directly affects the machine's small departure angle, small maximum climbing angle, and limited maintenance space; numerous parts, multiple welded joints, and high welding stress. By using a symmetrical integrated backhoe frame design formed by the base plate and the upper and lower hinge seats, this invention effectively integrates outrigger support and excavation operations, features automatic outrigger leveling, increases the working range of excavation operations, improves the overall departure angle, and significantly enhances the efficiency of rescue operations. Simultaneously, the base plate is changed from a small component to a single bent part, improving work efficiency and reducing welding stress. This completely solves the technical problems of existing technologies, such as limited structural form, the position of the lower hinge seat directly affecting the machine's small departure angle, small maximum climbing angle, limited maintenance space, numerous parts, multiple welded joints, and high welding stress. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0019] The markings in the diagram mean: 1-base plate, 2-sensor mounting base, 3-upper hinge base, 4-first bent plate, 5-shaft sleeve, 6-second bent plate, 7-lower hinge base, 8-mounting plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0021] like Figure 1 As shown, the present invention proposes a backhoe frame for engineering machinery, including a base plate 1, a sensor mounting base 2, an upper hinge base 3, a first bent plate 4, a bushing 5, a second bent plate 6, a lower hinge base 7, and a mounting plate 8. The backhoe frame of the present invention adopts a symmetrical structure, with a large installation space, effectively improving the departure angle of the whole machine, and the installation position of the outriggers can be adjusted according to structural needs.

[0022] The base plate 1 is a longitudinal support structure for the upper hinge base 3 and the lower hinge base 7, which are welded into a whole and mainly install the outriggers and outrigger luffing cylinders; furthermore, the cross section of the base plate 1 is a U-shaped column structure, which is cold-pressed and has a high-precision bushing hole to accommodate the bushing 5.

[0023] The sensor mounting base 2 is arranged symmetrically on the left and right sides of the outriggers and is used to install sensors that detect the retracted position of the outriggers. The sensor mounting base 2 is made of left and right vertical plates and sheet metal welded together. It has good stress resistance, occupies little space, and the sheet metal leaves space for sensing and detection. It also has a protective function and anti-collision design.

[0024] Both the upper hinge seat 3 and the lower hinge seat 7 are made of single plate molding. The hinge hole is reinforced with welded flanges and symmetrical weld bevel design to ensure strength while reducing welding deformation. The shape is designed according to the needs of excavator arm rotation and excavator valve installation, leaving space for movement and installation. The upper hinge seat 3 and the lower hinge seat 7 are used for the installation of the excavator device slewing frame to realize the excavation action.

[0025] The first curved plate 4 is used to help improve the strength and rigidity of the seat plate 1, and forms a box-shaped structure with the seat plate 1, and is welded parallel to the seat plate 1.

[0026] Bushing 5 is used to fix the hinge pin. It is inserted into the bushing hole on the seat plate 1 and welded. There are four bushings 5, which are used to install the outriggers and outrigger cylinder hinge pins. The structure is reasonable, the installation space is large, and the disassembly and assembly are convenient.

[0027] The second curved plate 6 has the same function as the first curved plate 4, and is used to help improve the strength and rigidity of the seat plate 1. It forms a box-shaped structure with the seat plate 1 and is welded parallel to the seat plate 1. The lower part of the second curved plate 6 has water passage holes.

[0028] Mounting plate 8 is used to press the rotary cylinder.

[0029] Compared to existing technologies, the advantages of this invention are as follows: This invention addresses the technical shortcomings of existing technologies, such as limited structural form, small departure angle, small maximum climbing angle, and limited maintenance space due to the direct impact of the lower hinge seat position on the overall machine's design, numerous parts, multiple welded joints, and high welding stress. By using a symmetrical integrated backhoe frame design formed by the base plate and the upper and lower hinge seats, this invention effectively integrates outrigger support and excavation operations, features automatic outrigger leveling, increases the working range of excavation operations, improves the overall machine's departure angle, and significantly enhances the efficiency of emergency rescue work. Simultaneously, the base plate is changed from a small component to a single bent part, improving work efficiency and reducing welding stress. This completely solves the technical problems of existing technologies, such as limited structural form, small departure angle, small maximum climbing angle, limited maintenance space, numerous parts, multiple welded joints, and high welding stress.

[0030] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A backhoe frame for engineering machinery, characterized in that, The device includes a symmetrically arranged longitudinally mounted base plate (1), an upper hinged base (3) and a lower hinged base (7) designed according to the needs of the excavator arm rotation and the installation of the excavator valve, with space reserved for movement and installation. The upper hinged base (3) and the lower hinged base (7) are arranged horizontally and parallel to each other to install the excavator rotating frame and realize the excavation action. The symmetrically arranged base plate (1) is fixedly connected to the side of the upper hinged base (3) and the side of the lower hinged base (7) respectively. A sensor mounting base (2) is provided above the base plate (1), and symmetrically distributed bushings (5) are provided on the base plate (1). The bushings (5) are used to install the outriggers and the outrigger cylinder hinge pins. The seat plate (1) is the longitudinal support structure of the upper hinge seat (3) and the lower hinge seat (7); The interior of the two seat plates (1) is respectively fixedly provided with a first curved plate (4) and a second curved plate (6) arranged parallel to the seat plate (1); The sensor mounting base (2) is symmetrically distributed on the left and right sides and is used to install sensors that detect the retracted position of the outriggers; A mounting plate (8) is fixedly provided on the back of the seat plate (1); The mounting plate (8) is used to press the rotary cylinder; The bushing (5) passes through the seat plate (1) and is welded to the seat plate (1); The longitudinal support structure is a column structure with a U-shaped cross-section; The mounting plate (8) is located between the upper hinge seat (3) and the lower hinge seat (7); The installation height of the lower hinge seat (7) is higher than the bottom surface of the seat plate (1).

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