Loader movable arm structure

Abstract

The utility model relates to a movable arm structure of a loader, which belongs to the technical field of loaders, one end of a movable arm is connected with a bucket, the other end of the movable arm is connected with a frame of the loader, the movable arm comprises two movable arm plates and a cross beam, the two movable arm plates are arranged in parallel at intervals, and the cross beam is detachably connected between the two movable arm plates. The cross beam is connected with a rocker arm supporting plate. According to the utility model, the movable arm plate and the cross beam are detachably assembled, and are detachable through the mutual matching of the bolts and the positioning seats, so that the complexity of the original tool is reduced, the welding process is reduced, the straightening process is omitted, the assembly cost is reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to a loader boom structure, in particular to a loader boom structure with reduced costs, and belongs to the technical field of loaders. Background Art

[0002] The loader boom is the main force-applying component of the loader, which mainly includes two boom plates and a crossbeam welded between the boom plates. In the prior art, in order to prevent the two boom plates from being non-parallel, a welding tool is used to position and fix the boom plates and the crossbeam to complete the welding assembly work. Chinese utility model patent CN220312319U discloses a universal welding tool for the loader boom. Although it blocks and limits the boom plates to make the boom more firmly fixed and more accurately positioned, it uses welding to connect the two, which is a laborious process in itself and will also increase the assembly cost. Therefore, a new loader boom structure is urgently needed to overcome the problems existing in the prior art. Utility Model Content

[0003] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a loader boom structure, which reduces welding processes and saves time and effort through the detachable connection of the boom plate and the cross beam.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model discloses a loader boom structure, in which one end of the boom is connected to the bucket, and the other end is connected to the loader frame. The boom includes a boom plate and a crossbeam, and the two boom plates are arranged in parallel and spaced apart. The crossbeam is detachably connected between the two boom plates, and a rocker support plate is connected to the crossbeam.

[0005] Furthermore, the crossbeam is a columnar cavity structure, and a first protrusion and a socket are provided at the connection part between the crossbeam and the boom plate. A first through hole and a second through hole matching the shape of the first protrusion are provided on the surface of the boom plate. A positioning seat is connected in the socket, and the positioning seat is distributed parallel to the boom plate. A bolt is connected in the first through hole, and the bolt passes through the first through hole and is connected to the third through hole on the surface of the positioning seat. The first protrusion is connected to the second through hole.

[0006] Furthermore, the crossbeam is a columnar cavity structure, and a first protrusion and a socket are provided at the connection part between the crossbeam and the boom plate. A first through hole and a second through hole matching the shape of the first protrusion are provided on the surface of the boom plate. A positioning seat is connected in the socket, and the positioning seat is distributed parallel to the boom plate. A bolt is connected in the first through hole, and the bolt passes through the first through hole and is connected to the third through hole on the surface of the positioning seat. The first protrusion is connected to the second through hole.

[0007] Furthermore, the positioning seat is provided with a second protrusion, the crossbeam is provided with a fourth through hole matching the second protrusion, the positioning seat is inserted into the insertion hole, and the second protrusion is connected to the fourth through hole.

[0008] Furthermore, the insertion hole extends radially inwardly on the side wall of the beam, and the outer peripheral surface of the positioning seat is arc-shaped.

[0009] Furthermore, the first protrusion is arc-shaped, and a plurality of the first protrusions are arranged at intervals along the circumferential direction of the end surface of the beam.

[0010] Furthermore, a plurality of the second through holes are distributed circumferentially with the first through hole as the center, and the first protrusions correspond to the second through holes one by one.

[0011] The utility model adopts a detachable assembly mode for the movable arm plate and the cross beam, which can be disassembled by the cooperation between bolts and positioning seats, thereby reducing the complexity of the original tooling, reducing the welding process, and omitting the straightening process, thereby reducing the assembly cost and saving time and labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The overall structure diagram of the utility model is as follows:

[0013] Figure 2 It is an exploded view of the movable arm described in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the movable arm plate described in the utility model;

[0015] Figure 4 It is a structural schematic diagram of the crossbeam described in the utility model;

[0016] Figure 5 It is a structural schematic diagram of the positioning seat described in the utility model.

[0017] In the figure, 1, boom; 101, boom plate; 102, crossbeam; 2, bucket; 3, rocker arm support plate; 4, first protrusion; 5, socket; 6, first through hole; 7, second through hole; 8, positioning seat; 9, bolt; 10, third through hole; 11, second protrusion; 12, fourth through hole. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 To Attachment Figure 5 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0019] A loader boom structure, one end of the boom 1 is connected to the bucket 2, and the other end is connected to the loader frame, the boom 1 includes a boom plate 101 and a crossbeam 102, the two boom plates 101 are arranged in parallel and spaced apart, the crossbeam 102 is detachably connected between the two boom plates 101, a rocker support plate 3 is connected to the crossbeam 102, and the connection parts of the loader boom with the vehicle body and the drive structure belong to the technical solutions well known in the art, which will not be elaborated in this article.

[0020] The cross beam 102 is a cylindrical cavity structure, and a first protrusion 4 and a socket 5 are provided at the connection part between the cross beam 102 and the boom plate 101. A first through hole 6 and a second through hole 7 matching the shape of the first protrusion 4 are provided on the surface of the boom plate 101. A positioning seat 8 is connected to the socket 5, and the positioning seat 8 is distributed parallel to the boom plate 101. A bolt 9 is connected to the first through hole 6, and the bolt 9 passes through the first through hole 6 and is connected to the third through hole 10 on the surface of the positioning seat 8. The first protrusion 4 is connected to the second through hole 7, thereby realizing the connection between the cross beam 102 and the boom plate 101.

[0021] The positioning seat 8 is provided with a second protrusion 11 , and the cross beam 102 is provided with a fourth through hole 12 matching the second protrusion 11 . The positioning seat 8 is inserted into the insertion hole 5 , and its second protrusion 11 is connected with the fourth through hole 12 to limit the positioning seat 8 .

[0022] The insertion hole 5 extends radially inwardly from the side wall of the cross beam 102, and the outer peripheral surface of the positioning seat 8 is arc-shaped. Figure 5 shown.

[0023] The first protrusion 4 is arc-shaped, and a plurality of the first protrusions 4 are circumferentially spaced along the end surface of the cross beam 102 . A plurality of the second through holes 7 are circumferentially distributed with the first through hole 6 as the center, and the first protrusions 4 and the second through holes 7 correspond one to one.

[0024] In this solution, the boom plate 101 and the crossbeam 102 are detachably assembled, and the bolts 9 and the positioning seat 8 cooperate with each other to achieve detachability, which reduces the complexity of the original tooling, reduces the welding process, and eliminates the straightening process, thereby reducing the assembly cost and saving time and effort.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A loader boom structure, wherein one end of the boom (1) is connected to a bucket (2), and the other end is connected to a loader frame, Features: The boom (1) comprises a boom plate (101) and a crossbeam (102); the two boom plates (101) are arranged in parallel and spaced apart; the crossbeam (102) is detachably connected between the two boom plates (101); and a rocker support plate (3) is connected to the crossbeam (102); the crossbeam (102) is in a columnar cavity structure; a plug hole (5) is arranged at a connection portion between the crossbeam and the boom plate (101); a first through hole (6) is arranged on the surface of the boom plate (101); a positioning seat (8) is connected in the plug hole (5); a bolt (9) is connected in the first through hole (6); the bolt (9) passes through the first through hole (6) and is connected to a third through hole (10) on the surface of the positioning seat (8).

2. The loader boom structure according to claim 1, Features: The connecting portion of the boom plate (101) is further provided with a first protrusion (4); the surface of the boom plate (101) is provided with a second through hole (7) matching the shape of the first protrusion (4); the positioning seat (8) is distributed parallel to the boom plate (101); and the first protrusion (4) is connected to the second through hole (7).

3. The loader boom structure according to claim 2, Features: The positioning seat (8) is provided with a second protrusion (11), the crossbeam (102) is provided with a fourth through hole (12) matching the second protrusion (11), the positioning seat (8) is inserted into the insertion hole (5), and its second protrusion (11) is connected to the fourth through hole (12).

4. The loader boom structure according to claim 3, Features: The insertion hole (5) extends radially inwardly on the side wall of the cross beam (102), and the outer peripheral surface of the positioning seat (8) is arc-shaped.

5. The loader boom structure according to claim 2, Features: The first protrusion (4) is arc-shaped, and a plurality of the first protrusions (4) are arranged at intervals along the circumferential direction of the end surface of the crossbeam (102).

6. The loader boom structure according to claim 5, Features: A plurality of the second through holes (7) are distributed circumferentially with the first through hole (6) as the center, and the first protrusions (4) and the second through holes (7) correspond one to one.

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