Traction front frame of loading machine

Abstract

The utility model belongs to the technical field of loaders, and particularly relates to a front traction frame of a loader, which comprises a main body structure and a fixed seat component arranged at the upper end of the main body structure, a main body structure comprises an outer box body assembly, a front box body assembly, a front middle box body assembly, a steering connecting piece, a front axle plate assembly and a hinge connecting plate assembly, the outer box body assembly comprises side plates on the two sides and an upper sealing plate connected to the tops of the side plates on the two sides, and the front box body assembly is connected into the front side of the outer box body assembly in an embedded mode; the front middle box body assembly is connected into the front middle portion of the outer box body assembly in an embedded mode, the steering connecting piece is connected into the outer box body assembly, the front axle plate assembly is connected to the bottom of the front end of the outer box body assembly, and the hinge connecting plate assembly is connected to the bottom of the rear end of the outer box body assembly. The front frame not only meets the requirements of traction working conditions on the strength and rigidity of the frame, but also has an overload protection function, is of a hollow box type structure, and is light in weight and low in production cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of loaders, and particularly relates to a traction front frame of a loader. Background Art

[0002] In the field of construction machinery, loaders have always played an important role in operations such as shoveling, loading, and transporting. According to the working conditions, loaders can be equipped with corresponding attachments and booms to meet the actual operation requirements. Due to the structure of the loader body, especially the particularity of the tires, the road adhesion and climbing ability of the loader are relatively strong in complex environments. With the strong power of the whole vehicle, loaders can also be used to tow large-load cargo boxes or material vehicles at low speeds.

[0003] At present, common automobile chassis are used as the basis for tractors. This type of tractor is suitable for transporting materials in conventional road environments, but has limited cross-terrain climbing ability and a relatively high price. Compared with the tractors with automobile chassis, the tractors modified from loaders are more capable of handling large-load transportation tasks on complex roads. As the front frame of a traction-type loader, it should not only have high reliability and load-bearing capacity, but also consider safety and not operate overloaded.

[0004] Currently, in the field of construction machinery technology, there is basically no structure of a loader front frame suitable for this condition, so it is necessary to optimize and design a new structural form. Content of the Utility Model

[0005] The utility model provides a traction front frame of a loader, which can solve the problems pointed out in the background art.

[0006] A traction front frame of a loader includes a main body structure and a fixed seat assembly arranged at the upper end of the main body structure; the main body structure includes an outer box body assembly, a front box body assembly, a front middle box body assembly, a steering connecting piece, a front axle plate assembly, and a hinged connecting plate assembly. The outer box body assembly includes side plates on both sides and an upper sealing plate connected to the tops of the side plates on both sides. The front box body assembly is embedded and connected inside the front side of the outer box body assembly. The front middle box body assembly is embedded and connected inside the front middle part of the outer box body assembly. The steering connecting piece is connected inside the outer box body assembly. The front axle plate assembly is connected to the bottom of the front end of the outer box body assembly. The hinged connecting plate assembly is connected to the bottom of the rear end of the outer box body assembly.

[0007] Preferably, the front box body assembly includes vertical plates arranged front and rear, and an upper connecting plate and a lower connecting plate connected between the vertical plates arranged front and rear.

[0008] Preferably, the upper connecting plate is an upper horizontal plate, and the lower connecting plate is a lower arc plate.

[0009] Preferably, the front middle box body assembly includes a top U-shaped part and side U-shaped parts on both sides. The side U-shaped parts on both sides are respectively connected to both sides of the top U-shaped part. The top U-shaped part is connected to the upper sealing plate, and the side U-shaped parts on both sides are respectively connected to the side plates on both sides.

[0010] Preferably, a plurality of reinforcing vertical plates are arranged on both side plates.

[0011] Preferably, a transverse reinforcing plate is lap-connected at the joint of the rear end of the side plate and the upper sealing plate.

[0012] Preferably, the fixed seat assembly includes a mounting plate and a bottom fixed seat. The bottom fixed seat is connected to the top surface of the upper sealing plate, and the mounting plate is connected to the bottom fixed seat.

[0013] Preferably, fixing ears are arranged on both sides of the mounting plate. The bottom fixed seat is a U-shaped fixed seat. The fixing ears on both sides are detachably connected to the U-shaped fixed seat through pin shafts, and a plurality of pin shaft holes are arranged on both sides of the U-shaped fixed seat.

[0014] Preferably, a load feedback system is further included. The load feedback system includes a pressure sensor and a display processor. The pressure sensor is arranged on the bottom surface of the front axle plate assembly.

[0015] Beneficial effects: The present utility model provides a loader towing front frame, which not only meets the requirements of the towing working condition for the strength and stiffness of the frame, but also has an overload protection function, and is a hollow box structure, with light weight and low production cost. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model,

[0017] Figure 2 is a schematic sectional view of the present utility model,

[0018] Figure 3 is a schematic structural diagram of the outer box body assembly of the present utility model,

[0019] Figure 4 is a schematic structural diagram of the front box body assembly of the present utility model,

[0020] Figure 5 is a schematic structural diagram of the front middle box body assembly of the present utility model,

[0021] Figure 6 is a schematic principle diagram of the load feedback system of the present utility model,

[0022] Description of the Reference Numerals:

[0023] Reference numerals in the figure: outer box assembly 11; side plate 111; upper sealing plate 112; reinforcing vertical plate 113; transverse reinforcing plate 114; front box assembly 12; vertical plate 121; upper connecting plate 122; lower connecting plate 123; front middle box assembly 13; top U-shaped part 131; side U-shaped part 132; steering connecting part 14; front axle plate assembly 15; articulated connecting plate assembly 16; mounting plate 21; bottom fixing seat 22; fixing ear 23; pin shaft 24; pin shaft hole 25; pressure sensor 31; display processor 32. Detailed implementation mode

[0024] The following combines the accompanying drawings to describe in detail a specific implementation mode of the present utility model, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0025] Embodiment 1:

[0026] As Figure 1 shown, a loader traction front frame includes a main body structure and a fixing seat assembly arranged at the upper end of the main body structure; the main body structure includes an outer box assembly 11, a front box assembly 12, a front middle box assembly 13, a steering connecting part 14, a front axle plate assembly 15 and an articulated connecting plate assembly 16. The outer box assembly 11 includes side plates 111 on both sides and an upper sealing plate 112 connected to the tops of the side plates 111 on both sides. The front box assembly 12 is embedded and connected inside the front side of the outer box assembly 11. The front middle box assembly 13 is embedded and connected inside the front middle part of the outer box assembly 11. The front box assembly 12 and the front middle box assembly 13 are embedded and connected inside the outer box assembly 11 to play a role in strengthening and supporting, so as to meet the requirements of the frame strength and stiffness. The steering connecting part 14 is connected inside the outer box assembly 11. The front axle plate assembly 15 is connected to the bottom of the front end of the outer box assembly 11. The articulated connecting plate assembly 16 is connected to the bottom of the rear end of the outer box assembly 11. The above connections can all adopt welding connections to form a stable overall structure.

[0027] Specifically, the front box assembly 12 includes vertical plates 121 arranged front and rear, an upper connecting plate 122 and a lower connecting plate 123 connected between the vertical plates 121 arranged front and rear. The upper connecting plate 122 is an upper horizontal plate, and the lower connecting plate 123 is a lower arc plate. The vertical plates 121 are welded to three sides of the outer box assembly 11, that is, the vertical plates 121 are welded and connected to the side plates 111 on both sides and the upper sealing plate 112.

[0028] Specifically, the front-middle box body assembly 13 includes a top U-shaped part 131 and side U-shaped parts 132 on both sides. The side U-shaped parts 132 on both sides are respectively connected to both sides of the top U-shaped part 131. The top U-shaped part 131 is connected to the upper sealing plate 112, and the side U-shaped parts 132 on both sides are respectively connected to the side plates 111 on both sides. The above welding methods are all welding. The front-middle box body assembly 13 is lined and welded inside the outer box body assembly 11, which can ensure strength and tensile capacity. Moreover, with a U-shaped structure, it can better ensure strength and tensile capacity.

[0029] In some embodiments, in order to improve the anti-deformation ability, a number of strengthening vertical plates 113 are provided on both side plates 111, and the connection method is welding.

[0030] In some embodiments, to avoid stress concentration at the contact surface of the plates, a transverse strengthening plate 114 is lap-welded at the connection between the rear end of the side plate 111 and the upper sealing plate 112.

[0031] Specifically, the fixed seat assembly is welded to the middle front part of the top of the main structure. The load force received by the fixed assembly can be decomposed into the following structures, which makes the frame more evenly stressed by each structure and avoids deformation of the plates. The fixed seat assembly includes a mounting plate 21 and a bottom fixed seat 22. The bottom fixed seat 22 is connected to the top surface of the upper sealing plate 112, and the mounting plate 21 is connected to the bottom fixed seat 22. The connection methods can all be welding; fixing ears 23 are provided on both sides of the mounting plate 21. The bottom fixed seat 22 is a U-shaped fixed seat. The fixing ears 23 on both sides are detachably connected to the U-shaped fixed seat through a pin shaft 24. A number of pin holes 25 are provided on both sides of the U-shaped fixed seat. The number of pin holes 25 is arranged along the length and height directions of the U-shaped fixed seat, so that according to the installation height dimension of different cargo boxes, the position of the mounting plate 21 can be adjusted forward and backward and up and down by changing the connection position of the pin shaft 24 to adapt to actual needs; at the same time, according to the situation of the load feedback system, the position of the stress point can be adjusted to make the whole vehicle more evenly stressed.

[0032] Embodiment 2:

[0033] To avoid early damage to the frame caused by overloading, a load feedback system is further included. The load feedback system includes a pressure sensor 31 and a display processor 32. The pressure sensor 31 is arranged on the bottom surface of the front axle plate assembly 15 to detect the load received by the front axle in real time. The pressure load received by the front axle is converted into an electrical signal through the sensor, and the electrical signal is transmitted to the processor to determine whether the actual load exceeds the design limit value. If it exceeds, an alarm will be given, otherwise the current processing flow will end.

[0034] The above discloses only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A loader traction front frame, comprising a main structure and a fixing seat assembly arranged at the upper end of the main structure; characterized in that: The main structure comprises an outer box assembly (11), a front box assembly (12), a front middle box assembly (13), a steering connector (14), a front bridge plate assembly (15) and a hinged connecting plate assembly (16); the outer box assembly (11) comprises side panels (111) on both sides and an upper cover plate (112) connected to the top of the side panels (111) on both sides; the front box assembly (12) is embedded in the front side of the outer box assembly (11); the front middle box assembly (13) is embedded in the front middle of the outer box assembly (11); the steering connector (14) is connected in the outer box assembly (11); the front bridge plate assembly (15) is connected to the front end bottom of the outer box assembly (11); and the hinged connecting plate assembly (16) is connected to the rear end bottom of the outer box assembly (11).

2. A loader traction front frame according to claim 1, characterized in that: The front box assembly (12) comprises front and rear vertical plates (121), and an upper connecting plate (122) and a lower connecting plate (123) connected between the front and rear vertical plates (121).

3. The loader traction front frame according to claim 2, characterized in that: The upper connecting plate (122) is an upper horizontal plate, and the lower connecting plate (123) is a lower arc-shaped plate.

4. The loader traction front frame according to claim 1, characterized in that: The front middle box assembly (13) comprises a top U-shaped member (131) and side U-shaped members (132) on both sides, the side U-shaped members (132) on both sides are respectively connected to both sides of the top U-shaped member (131), the top U-shaped member (131) is connected to the upper sealing plate (112), and the side U-shaped members (132) on both sides are respectively connected to the side plates (111) on both sides.

5. The loader traction front frame according to claim 1, characterized in that: A plurality of reinforcing vertical plates (113) are provided on the side plates (111) on both sides.

6. The loader traction front frame according to claim 1, characterized in that: The rear end of the side plate (111) is overlapped and connected to the transverse reinforcing plate (114) at the connection between the upper sealing plate (112).

7. A loader traction front frame according to any one of claims 1 to 6, characterized in that: The fixing seat assembly comprises a mounting plate (21) and a bottom fixing seat (22), wherein the bottom fixing seat (22) is connected to the top surface of the upper sealing plate (112), and the mounting plate (21) is connected to the bottom fixing seat (22).

8. The loader traction front frame according to claim 7, characterized in that: The mounting plate (21) is provided with fixing ears (23) on both sides, the bottom fixing seat (22) is a U-shaped fixing seat, the fixing ears (23) on both sides are detachably connected to the U-shaped fixing seat via a pin shaft (24), and a plurality of pin shaft holes (25) are provided on both sides of the U-shaped fixing seat.

9. A loader traction front frame according to any one of claims 1 to 6, characterized in that: It also includes a load feedback system, which includes a pressure sensor (31) and a display processor (32). The pressure sensor (31) is arranged on the bottom surface of the front bridge plate assembly (15).

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