Novel excavator boom structure

Abstract

The utility model discloses a novel excavator movable arm structure which comprises a movable arm body, and a front arm body and a rear arm body of the movable arm body are defined by a top plate, a bottom plate and side plates. Two groups of fixing shaft through holes are formed in the tail end of the front arm body, and a group of fixing shaft through holes are formed in the tail end of the rear arm body; a bucket rod hydraulic cylinder hinge seat is arranged at the top of the front arm body, and a main hydraulic cylinder hinge seat is arranged at the bottom of the rear arm body; limiting clamping bases are arranged on the upper portion of the top plate and the side portions of the side plates, multiple sets of reinforcing supporting plates are arranged between the top plate and the bottom plate, and multiple sets of hollowed-out holes are formed in the reinforcing supporting plates. A fixed shaft through hole in the movable arm body is provided with a first shaft hole limiting plate and a second shaft hole limiting plate; and protective plates are arranged on the top plate above the fixed shaft through holes in the front arm body and the rear arm body and on the bottom plate below the fixed shaft through holes. The overall weight is lighter, the internal structural strength is large, and after being used for a long time, the steel pipe is more stable, and cracks and the like are not prone to occurring; meanwhile, the external cable fixing efficiency is improved, and installation, replacement and maintenance are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of excavators, in particular to a novel excavator boom structure. Background Art

[0002] The excavator mechanical arm is one of the important working parts of the excavator, which is composed of the dipper arm, arm, dump arm and bucket. Its structure is similar to that of a human arm, and it adopts a multi-joint connecting rod mechanism, which is driven by a hydraulic system to achieve flexible movement and control.

[0003] At present, the traditional excavator boom is composed of an integrated structure, with some internal parts equipped with reinforcing ribs and some parts without reinforcing ribs. Most of the reinforcing ribs are solid plates, and the overall structure is heavy. At the same time, there is a lack of all-round limit fixation for the fixed shaft through hole, and a lack of external protective structure, which is prone to deformation and damage. Utility Model Content

[0004] The utility model aims to provide a novel excavator boom structure which is lightweight and structurally stable.

[0005] The purpose of the utility model is achieved as follows: a new excavator boom structure, including a boom body, the boom body is composed of a top plate, a bottom plate and side plates to form a front arm body and a rear arm body, the top plate, the bottom plate and the side plates are all bent into one piece;

[0006] The end of the front arm body is provided with two groups of fixed shaft through holes, and the end of the rear arm body is provided with a group of fixed shaft through holes; the top of the front arm body is provided with a boom hydraulic cylinder hinge seat, and the bottom of the rear arm body is provided with a main hydraulic cylinder hinge seat; the upper part of the top plate and the side of the side plate are provided with a limit clamping seat, and the limit clamping seat is composed of an upper base and a lower base, the middle part of the lower base is provided with a fixing hole, the middle part of the upper base is provided with a through hole, and the upper base and the lower base are fixedly connected by bolts; multiple groups of reinforcing support plates are provided between the top plate and the bottom plate, and multiple groups of hollow holes are provided on the reinforcing support plates; the outer wall of the fixed shaft through hole located in the rear arm body is provided with a first shaft hole limiting plate, and an shaft hole reinforcing plate is provided between the two groups of fixed shaft through holes located in the forearm body, and the fixed shaft through hole on the inner side is provided with a second shaft hole limiting plate that conflicts with the reinforcing support plate; protective plates are provided at the top plate above the fixed shaft through holes on the forearm body and the rear arm body and at the bottom plate below.

[0007] Preferably, the lower base is welded and fixed to the boom body, and a lower semicircular slot group is provided on the lower base, and blind holes are provided on both sides of the lower semicircular slot group; the upper base is provided with an upper semicircular slot group matching the lower base, and an insertion protrusion is provided on the side of the upper semicircular slot group, and the insertion protrusion is inserted into and matched with the blind hole.

[0008] Preferably, the protective plate is fixed to the top plate and the bottom plate by bolts, and the protective plates on both sides are provided with bent edge plates extending relatively close to a section of the fixed shaft through hole, and the bent edge plates on both sides wrap the periphery of the fixed shaft through hole.

[0009] Preferably, reinforcing plates are provided between the boom hydraulic cylinder articulated seat and the main hydraulic cylinder articulated seat and the boom body, and at the bending points of the front arm body and the rear arm body, and the middle portion of the reinforcing plates is hollowed out.

[0010] Preferably, hollow holes are provided on the main bodies of the first shaft hole limiting plate and the second shaft hole limiting plate.

[0011] Compared with the prior art, the utility model is beneficial in that:

[0012] 1. Multiple groups of support reinforcement plates are arranged inside the boom, and multiple groups of hollow holes are arranged on the support reinforcement plates, so that the overall weight is lighter and the purpose of lightweight is achieved; at the same time, the fixed shaft through hole is limited by the first shaft hole limiting plate and the second shaft hole limiting plate to ensure that the fixed shaft through hole is more stable after long-term use and is not prone to cracks;

[0013] 2. Protective plates are set above and below the fixed shaft through hole, and the protective plates are extended to effectively protect the fixed shaft through hole. At the same time, the protective plates are removable, which is convenient for later maintenance and replacement;

[0014] 3. The limit holder is optimized in design, and the bolts are placed in the middle of the holder, so that during installation, only the bolts need to be tightened one by one, which greatly improves the installation efficiency. At the same time, the insertion protrusion is arranged to cooperate with the blind hole to form a preliminary positioning and improve the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the limit card seat structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the upper base structure of the utility model.

[0019] Figure 5 It is a schematic diagram of the bending edge plate structure of the utility model.

[0020] Figure 6 It is a schematic diagram of the bottom reinforcement plate structure of the utility model.

[0021] Among them, 1 boom body, top plate 101, bottom plate 102, 103 side plates, 2 front arm body, 3 rear arm body, 4 fixed shaft through hole, 5 boom hydraulic cylinder articulated seat, 6 main hydraulic cylinder articulated seat, 7 limit card seat, 701 upper base, 7011 through hole, 7012 upper semicircular card slot group, 7013 insertion protrusion, 702 lower base, 7021 fixed hole, 7022 lower semicircular card slot group, 7023 blind hole, 8 reinforced support plate, 9 hollow hole, 10 first shaft hole limit plate, 11 shaft hole reinforcement plate, 12 second shaft hole limit plate, 13 protective plate, 1301 bending edge plate, 14 reinforcement plate. DETAILED DESCRIPTION

[0022] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0023] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-5 As shown, a novel excavator boom structure includes a boom body 1, wherein the boom body 1 is composed of a top plate 101, a bottom plate 102 and a side plate 103 to form a front boom body 2 and a rear boom body 3, wherein the top plate 101, the bottom plate 102 and the side plate 103 are all formed by bending in one piece;

[0026] Two groups of fixed shaft through holes 4 are provided at the end of the front arm body 2, and one group of fixed shaft through holes 4 is provided at the end of the rear arm body 3; a boom hydraulic cylinder hinge seat 5 is provided at the top of the front arm body 2, and a main hydraulic cylinder hinge seat 6 is provided at the bottom of the rear arm body 3; a limit card seat 7 is provided on the upper part of the top plate 101 and the side of the side plate 103, and the limit card seat 7 is composed of an upper base 701 and a lower base 702, a fixing hole 7021 is provided in the middle of the lower base 702, and a through hole 7011 is provided in the middle of the upper base 701, and the upper base 701 and the lower base 702 are fixedly connected by bolts ; Multiple groups of reinforced support plates 8 are arranged between the top plate 101 and the bottom plate 102, and multiple groups of hollow holes 9 are opened on the reinforced support plates 8; the outer wall of the fixed shaft through hole 4 located in the rear arm body 3 is provided with a first shaft hole limiting plate 10, and a shaft hole reinforcing plate 11 is arranged between the two groups of fixed shaft through holes 4 located in the front arm body 2, and the fixed shaft through hole 4 on the inner side is provided with a second shaft hole limiting plate 12 which conflicts with the reinforced support plate 8; protective plates 13 are arranged at the top plate 101 above the fixed shaft through holes 4 on the front arm body 2 and the rear arm body 3 and the bottom plate 102 below.

[0027] like Figure 1-4 As shown, the lower base 702 is welded and fixed to the boom body, and a lower semicircular slot group 7022 is provided on the lower base 702, and blind holes 7023 are provided on both sides of the lower semicircular slot group; the upper base 701 is provided with an upper semicircular slot group 7012 matching the lower base 702, and an insertion protrusion 7013 is provided on the side of the upper semicircular slot group 7012, and the insertion protrusion 7013 is inserted and matched with the blind hole 7023. After the cable is fixed in the slot, the insertion protrusion of the upper base is matched with the blind hole to achieve quick docking, which is convenient for the subsequent fixing of bolts.

[0028] like Figure 1 , 5 As shown, the protective plate 13 is fixed to the top plate 101 and the bottom plate 102 by bolts, and the protective plates 13 on both sides are relatively extended with a bent edge plate 1301 near the fixed shaft through hole 4, and the bent edge plates on both sides wrap the outer periphery of the fixed shaft through hole. Since the excavator comes into contact with more hard objects during operation, the fixed shaft through hole is provided with bearings, rotating shafts and other structures. By setting up the protective plate, the outer facade of the fixed shaft through hole can be better protected to prevent deformation and the like.

[0029] like Figure 1 , 6 As shown, reinforcing plates 14 are provided between the boom hydraulic cylinder articulated seat 5 and the main hydraulic cylinder articulated seat 6 and the boom body 1, and at the bending places of the front arm body 2 and the rear arm body 3. The middle part of the reinforcing plate 14 is hollowed out. It is recommended to reduce the weight of the reinforcing plate without affecting the structural strength of the bending place.

[0030] like Figure 2As shown, hollow holes are provided on the main bodies of the first shaft hole limiting plate 10 and the second shaft hole limiting plate 12, and the hollow holes further reduce the weight of the limiting plates, making the overall weight lighter and facilitating lightweighting.

[0031] Therefore, the utility model has the following advantages:

[0032] 1. The internal and external structures are high in strength and lighter in weight, achieving the goal of lightweighting;

[0033] 2. The installation efficiency of external pipeline machine cables is high, and it is easy to disassemble and install, which greatly reduces the working time;

[0034] 3. Set up an external protection plate for the fixed shaft through hole to prevent deformation of the external structure and increase service life.

[0035] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A novel excavator boom structure, comprising a boom body, characterized in that: The movable arm body is composed of a top plate, a bottom plate and side plates to form a front arm body and a rear arm body, and the top plate, the bottom plate and the side plates are all bent into one piece; The end of the front arm body is provided with two groups of fixed shaft through holes, and the end of the rear arm body is provided with a group of fixed shaft through holes; the top of the front arm body is provided with a boom hydraulic cylinder hinge seat, and the bottom of the rear arm body is provided with a main hydraulic cylinder hinge seat; the upper part of the top plate and the side of the side plate are provided with a limit clamping seat, and the limit clamping seat is composed of an upper base and a lower base, the middle part of the lower base is provided with a fixing hole, the middle part of the upper base is provided with a through hole, and the upper base and the lower base are fixedly connected by bolts; multiple groups of reinforcing support plates are provided between the top plate and the bottom plate, and multiple groups of hollow holes are provided on the reinforcing support plates; the outer wall of the fixed shaft through hole located in the rear arm body is provided with a first shaft hole limiting plate, and an shaft hole reinforcing plate is provided between the two groups of fixed shaft through holes located in the forearm body, and the fixed shaft through hole on the inner side is provided with a second shaft hole limiting plate that conflicts with the reinforcing support plate; protective plates are provided at the top plate above the fixed shaft through holes on the forearm body and the rear arm body and at the bottom plate below.

2. A novel excavator boom structure according to claim 1, characterized in that: The lower base is welded and fixed to the boom body, and a lower semicircular slot group is provided on the lower base, and blind holes are provided on both sides of the lower semicircular slot group; the upper base is provided with an upper semicircular slot group matching the lower base, and an insertion protrusion is provided on the side of the upper semicircular slot group, and the insertion protrusion is inserted and matched with the blind hole.

3. The novel excavator boom structure according to claim 1 is characterized in that: The protective plate is fixed to the top plate and the bottom plate by bolts, and the protective plates on both sides are relatively extended with bent edge plates near the fixed shaft through hole, and the bent edge plates on both sides wrap the outer periphery of the fixed shaft through hole.

4. The novel excavator boom structure according to claim 1 is characterized in that: Reinforcement plates are provided between the boom hydraulic cylinder articulation seat and the main hydraulic cylinder articulation seat and the boom body, and at the bending positions of the front arm body and the rear arm body, and the middle portion of the reinforcement plates is hollowed out.

5. The novel excavator boom structure according to claim 1 is characterized in that: The first shaft hole limiting plate and the second shaft hole limiting plate main body are both provided with hollow holes.

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