CN216508669U

CN216508669U - Backplate subassembly, track protection machanism and operation machinery

Info

Publication number: CN216508669U
Application number: CN202220005659.6U
Authority: CN
Inventors: 张键
Original assignee: Shanghai Sany Heavy Machinery Co Ltd
Current assignee: Shanghai Sany Heavy Machinery Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-05-13
Anticipated expiration: 2032-01-04

Abstract

The utility model relates to the technical field of engineering machinery, and aims to provide a guard plate assembly, a track protection mechanism and operating machinery. The guard plate assembly comprises a guard plate body, the guard plate body comprises two assembling plates and two connecting plates, the length direction of the connecting plates is arranged along the friction direction, and the two assembling plates are connected through the two connecting plates; the guard plate body is also provided with at least one group of rolling contact mechanisms suitable for rolling along the friction direction. The utility model solves the problems that the abrasion among the pin shaft, the pin sleeve and the guard plate of the existing crawler excavator is serious, the product quality is influenced and the maintenance cost is high.

Description

Backplate subassembly, track protection machanism and operation machinery

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a guard plate assembly, a crawler belt protection mechanism and operating machinery.

Background

The crawler type walking mode is adopted by most of operating machines such as excavators, has the characteristics of large power, strong stability and good flexibility, and is suitable for mine areas such as coal mines, quarrying mines and the like. Because the working environment of the crawler excavator is generally severe, when the road surface is particularly bumpy, the thrust wheel is easy to separate from the track caterpillar link, the crawler and the thrust wheel are seriously damaged, and potential safety hazards exist. Therefore, a guard plate is usually additionally arranged on the outer side of the track caterpillar link to limit the moving range of the track caterpillar link, so that the thrust wheel is prevented from falling off the track caterpillar link, and the normal operation of the excavator is ensured.

However, as the excavator turns and walks on a slope, the pin shafts and pin sleeves on the track of the excavator are abraded with the guard plates, especially when the thrust wheels ride on the track, the abrasion is the most serious, even scrap iron can be ground, the abrasion amount is increased along with the accumulation of operation time, the product quality of the excavator is seriously affected, and the maintenance cost of equipment is increased by replacing related parts regularly.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the abrasion among the pin shaft, the pin sleeve and the guard plate of the crawler excavator in the prior art is serious, the product quality is affected and the maintenance cost is high, so that the guard plate assembly, the crawler protection mechanism and the operation machine which can effectively improve the abrasion among the pin shaft, the pin sleeve and the guard plate, have good product quality and are low in maintenance cost are provided.

In order to solve the problems, the utility model provides a guard plate assembly, which comprises a guard plate body, wherein the guard plate body comprises two assembling plates and two connecting plates, the length direction of the connecting plates is arranged along the friction direction, and the two assembling plates are connected through the two connecting plates; the guard plate body is also provided with at least one group of rolling contact mechanisms suitable for rolling along the friction direction.

Optionally, the rolling contact mechanism includes a plurality of rolling members, and the rolling members are detachably connected to the connecting plate through a positioning connecting member.

Optionally, the rolling member is a steel ball, the positioning connecting member is a stepped bolt, a central hole is formed in the axis direction of the steel ball, the stepped bolt comprises a first cylindrical surface and a second cylindrical surface, the outer diameter of the first cylindrical surface and the outer diameter of the second cylindrical surface are both smaller than the inner diameter of the central hole, the stepped bolt penetrates through the central hole from bottom to top, the second cylindrical surface extends out of the central hole, and the second cylindrical surface is connected with the connecting plate.

Optionally, the outer diameter of the first cylindrical surface is larger than the outer diameter of the second cylindrical surface.

Optionally, the first cylindrical surface and the second cylindrical surface are connected through a step surface, and the step surface extends out of the central hole and is abutted against the lower surface of the connecting plate.

Optionally, the rolling contact mechanism is disposed on a lower surface of the connecting plate.

Optionally, the steel ball protrudes from the inner side surface of the connecting plate by at least 5 mm.

Optionally, two sets of rolling contact mechanisms are arranged on the guard plate body, and the two sets of rolling contact mechanisms are respectively arranged on the lower surfaces of the two connecting plates.

The crawler protection mechanism comprises a crawler frame walking beam and the guard plate assembly, wherein the upper surface of a guard plate body in the guard plate assembly is connected with a bottom plate of the crawler frame walking beam.

A working machine comprises the track protection mechanism.

The utility model has the following advantages:

(1) according to the guard plate assembly provided by the utility model, the guard plate body is provided with at least one group of rolling contact mechanisms suitable for rolling along the friction direction, the guard plate assembly can be matched and connected with the track frame walking beam, sliding friction can be converted into rolling friction, the friction coefficient can be effectively reduced, the abrasion loss is greatly reduced, the product quality is favorably ensured, and the later maintenance cost is lower.

(2) The guard board assembly provided by the utility model has the advantages that the rolling contact mechanism comprises the steel balls and the step bolts, the step bolts penetrate through the central holes of the steel balls from bottom to top, the second column surfaces of the step bolts extend out of the central holes and are connected with the lower surface of the connecting plate, and the rolling contact mechanism is simple in structure, reasonable in design, safe, reliable and easy to implement.

(3) The crawler protection mechanism comprises the guard plate assembly, the upper surface of the guard plate body in the guard plate assembly is connected with the bottom plate of the crawler frame walking beam, sliding friction among the pin shaft, the pin sleeve and the guard plate can be changed into rolling friction by the crawler protection mechanism, abrasion of the pin shaft, the pin sleeve and the guard plate can be obviously improved, the service life is ensured, frequent replacement is not needed, and the maintenance cost is low.

(4) The operation machine provided by the utility model comprises the track protection mechanism, and the sliding friction among the pin shaft, the pin sleeve and the protection plate can be changed into rolling friction, so that the abrasion loss of the pin shaft, the pin sleeve and the protection plate is effectively reduced, the service life of parts is ensured, frequent replacement is not needed, the maintenance cost is lower, and the product quality is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 shows a schematic view of a fender assembly of the present invention;

figure 2 shows a schematic view of the track guard mechanism of the present invention.

Description of reference numerals:

101-assembly plate, 1011-vertical part, 1012-horizontal part, 102-connecting plate, 103-connecting hole;

201-steel ball, 2011-center hole, 202-step bolt, 2021-first cylindrical surface, 2022-second cylindrical surface, 2023-step surface;

3-a pin shaft;

4-pin sleeve.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the guard plate assembly of the present invention is a preferred embodiment, and the guard plate assembly is used for converting sliding friction into rolling friction, and is suitable for positions and occasions where assembly mechanisms such as a working machine crawler protection mechanism need to be rubbed for a long time, and can significantly reduce the wear loss of relevant parts, and is beneficial to ensuring the service life of the parts and improving the overall quality of products.

The fender assembly comprises a fender body and at least one set of rolling contact mechanisms. Wherein, the backplate body is the bearing structure of whole backplate subassembly, adopts steel material to make, makes this backplate subassembly have sufficient intensity to satisfy different user demands. In this embodiment, the fender body comprises two assembly plates 101 and two connecting plates 102, the assembly plates 101 and the connecting plates 102 are both of a certain length, and the two assembly plates 101 are connected together through the two connecting plates 102 to form a frame structure similar to a rectangle.

Specifically, the mounting plate 101 is an inverted L-shaped plate, and includes a vertical portion 1011 and a horizontal portion 1012, and the vertical portion 1011 and the horizontal portion 1012 are connected by a rounded corner. The vertical part 1011 is fixedly connected with the connecting plate 102, and the length direction of the connecting plate 102 is perpendicular to the plane of the vertical part 1011; the horizontal portion 1012 has at least two attachment holes 103 for attachment to an assembly mechanism. The horizontal portions 1012 of the two mounting plates 101 extend away from each other, so that the two mounting plates 101 are symmetrical with respect to a perpendicular bisector of the connecting plate 102. The length direction of the connecting plates 102 is arranged along the friction direction, for structural stability, the two connecting plates 102 are symmetrical relative to the perpendicular bisector of the assembling plate 101, a plurality of assembling holes are formed in the lower surface of the connecting plates 102, and the inner side surfaces of the connecting plates 102 can generate friction with relevant parts of an assembling mechanism. In the present embodiment, the fitting plate 101 and the connecting plate 102 are integrally molded.

The rolling contact mechanism is arranged on the guard plate body and can roll along the friction direction, so that sliding friction is converted into rolling friction, and the abrasion loss is reduced. In order to achieve the best anti-abrasion effect, the guard plate body is provided with two sets of rolling contact mechanisms, and the two sets of rolling contact mechanisms are respectively arranged on the lower surfaces of the two connecting plates 102.

In this embodiment, the rolling contact mechanism includes a plurality of rolling members, the rolling members are detachably connected to the connection plate 102 through positioning connection members, and further, the rolling members are detachably connected to the lower surface of the connection plate 102 through positioning connection members. The number of rolling members may be determined according to the length of the connection plate 102 or the use requirement.

In this embodiment, each set of rolling contact mechanism is provided with five rolling elements, each rolling element is a steel ball 201, the positioning connection element is a step bolt 202, a central hole 2011 is formed in the axis direction of the steel ball 201, each step bolt 202 includes a first cylindrical surface 2021 and a second cylindrical surface 2022, the outer diameters of the first cylindrical surface 2021 and the second cylindrical surface 2022 are both smaller than the inner diameter of the central hole 2011, and the outer diameter of the first cylindrical surface 2021 is larger than the outer diameter of the second cylindrical surface 2022, that is, the first cylindrical surface 2021 can be inserted into the central hole 2011 and a certain fit gap is maintained between the first cylindrical surface 2021 and the second cylindrical surface 2022, so that the steel ball 201 can roll around the axial direction of the step bolt 202. The first cylindrical surface 2021 and the second cylindrical surface 2022 are connected by a step surface 2023, and the step surface 2023 is a horizontal step surface for structural reliability. During assembly, the step bolt 202 penetrates through the central hole 2011 from bottom to top, the second column surface 2022 and the step surface 2023 extend out of the central hole 2011, and the second column surface 2022 is connected with the lower surface of the connecting plate 102, namely, the height of the first cylindrical surface 2021 is larger than that of the steel ball 201, so that the effect of prompting in-place assembly is achieved.

Further, the second pillar surface 2022 is formed with threads, the inner wall of the assembly hole on the lower surface of the connecting plate 102 is provided with threads matched with the second pillar surface 2022, the second pillar surface 2022 extends out of the central hole 2011 to be connected with the assembly hole on the lower surface of the connecting plate 102, and when the step surface 2023 abuts against the lower surface of the connecting plate 102, the step bolt 202 is screwed in place.

In order to achieve the best effect of reducing the rolling friction and the wear, the steel balls 201 protrude from the inner side surface of the connecting plate 102 by at least 5mm, and in the embodiment, the steel balls 201 protrude from the inner side surface of the connecting plate 102 by 6 mm.

As shown in fig. 2, the present embodiment further provides a track protection mechanism, which includes a track frame walking beam and the fender assembly of the present embodiment, that is, the assembly mechanism is the track frame walking beam, the track frame walking beam has a bottom plate, and the upper surface of the fender body in the fender assembly is connected to the bottom plate of the track frame walking beam. Specifically, the assembling plate 101 of the fender body is provided with at least two connecting holes 103, and the bottom plate of the track frame walking beam is correspondingly provided with bottom plate connecting holes, so that when the fender assembly is assembled, the connecting holes 103 are aligned with the bottom plate connecting holes, and the fender assembly can be fastened and connected by using matched bolts. After assembly, the track roller of the track guard is positioned between the two link plates 102. The track protection mechanism is also provided with a pin shaft 3 and a pin sleeve 4, the pin shaft 3 and the pin sleeve 4 can be in rolling friction contact with the steel ball 201, and the friction direction is the tangential direction of the steel ball 201.

The present embodiments also provide a work machine including the track guard mechanism of the present embodiments. When the operation machine turns and runs on a slope, the pin shaft 3 and the pin sleeve 4 on the inner side and the outer side of the crawler belt are in contact with the steel ball 201 and are in rolling friction, the friction direction is the tangential direction of the steel ball 201 at the moment, the pin shaft 3 and the pin sleeve 4 cannot generate sliding friction with the connecting plate 102, the friction coefficient is greatly reduced, the abrasion loss can be obviously reduced, the service life of a part is ensured, and the product quality is improved.

In other embodiments, when the requirement for wear resistance is not too high, in order to reduce the cost, only one set of rolling contact mechanisms may be disposed on the fender body, that is, the rolling contact mechanism is disposed on the lower surface of one of the connection plates 102 of the fender body, which also can achieve a certain effect of reducing wear.

In other embodiments, the number of rolling members may be determined according to the length of the connecting plate 102 or the use requirement, such as 3, 6, 8, 11, etc., which is not limited by the present invention.

In other embodiments, the steel balls 201 may protrude 5mm, 8mm, 10mm, etc. from the inner side surface of the connection plate 102 according to different product sizes, which is not limited in the present invention.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The guard plate assembly comprises a guard plate body, wherein the guard plate body comprises two assembling plates (101) and two connecting plates (102), the length direction of the connecting plates (102) is arranged along the friction direction, and the two assembling plates (101) are connected through the two connecting plates (102); the method is characterized in that: the guard plate body is also provided with at least one group of rolling contact mechanisms suitable for rolling along the friction direction.

2. The fender assembly of claim 1, wherein: the rolling contact mechanism comprises a plurality of rolling parts, and the rolling parts are detachably connected with the connecting plate (102) through a positioning connecting piece.

3. The fender assembly of claim 2, wherein: the rolling member is steel ball (201), the location connecting piece is step bolt (202), the axle center direction shaping of steel ball (201) has centre bore (2011), step bolt (202) include first cylinder (2021) and second cylinder (2022), the external diameter of first cylinder (2021) with the external diameter of second cylinder (2022) all is less than the internal diameter of centre bore (2011), step bolt (202) are passed from bottom to top centre bore (2011), second cylinder (2022) stretch out centre bore (2011), second cylinder (2022) with connecting plate (102) are connected.

4. The fender assembly of claim 3, wherein: the outer diameter of the first cylindrical surface (2021) is larger than the outer diameter of the second cylindrical surface (2022).

5. The fender assembly of claim 4, wherein: the first cylindrical surface (2021) and the second cylindrical surface (2022) are connected through a step surface (2023), and the step surface (2023) extends out of the central hole (2011) and is abutted against the lower surface of the connecting plate (102).

6. The fender assembly of claim 5, wherein: the rolling contact mechanism is arranged on the lower surface of the connecting plate (102).

7. The fender assembly of claim 6, wherein: the steel balls (201) protrude out of the inner side face of the connecting plate (102) by at least 5 mm.

8. The fender assembly of any one of claims 1 to 7, wherein: the guard plate body is provided with two groups of rolling contact mechanisms which are respectively arranged on the lower surfaces of the two connecting plates (102).

9. The utility model provides a track protection machanism, includes track frame walking beam, its characterized in that: the fender assembly of any one of claims 1 to 8 further comprising a fender body having an upper surface connected to the base plate of the track frame walking beam.

10. A working machine characterized in that: including the track guard mechanism of claim 9.