CN216888548U

CN216888548U - Full cladding middle part groove

Info

Publication number: CN216888548U
Application number: CN202121311704.2U
Authority: CN
Inventors: 辛同帅; 谭欣; 鲁凤; 刘春丽; 党春博; 张翅; 吴雅明
Original assignee: Zhengzhou Coal Mining Machinery Longwall Equipment Co ltd; Zhengzhou Coal Mining Machinery Group Co Ltd
Current assignee: Zhengzhou Coal Mining Machinery Longwall Equipment Co ltd; Zhengzhou Coal Mining Machinery Group Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-07-05
Anticipated expiration: 2031-06-11

Abstract

The utility model provides a full-cladding middle trough which comprises a baffle ledge, a shovel board ledge, a middle plate and a bottom plate, wherein the middle plate and the bottom plate are connected with the baffle ledge and the shovel board ledge; an upper chain channel is arranged above the middle plate, and a lower chain channel is arranged between the middle plate and the bottom plate; and the upper surface of the middle plate, the first C-shaped surface positioned in the upper chain channel area on the baffle ledge and the second C-shaped surface positioned in the upper chain channel area on the shovel board ledge are provided with cladding layers covering the whole surface. The whole surface of the upper surface of the bottom plate is also provided with a cladding layer. The utility model can well slow down the abrasion speed of the bottom plate and the ledge and improve the integral service life of the middle trough. The wear-resistant alloy cladding layer can still continue cladding after being worn, and the subsequent maintenance cost is saved. After the underground running-in period of the middle groove, the cladding surface is smooth like a mirror surface, the friction coefficient is rapidly reduced to 50% of the original friction coefficient, and the power consumption can be reduced by 10%.

Description

Full cladding middle part groove

Technical Field

The utility model belongs to the field of coal mining, and particularly relates to a full-cladding middle trough.

Background

The scraper conveyer is an indispensable main device for underground coal mining, plays a role in conveying coal and provides a walking track for a coal mining machine in a coal mining working face, and comprises a machine head, a power part, a transition groove, a middle groove, a skylight-opened middle groove, a deflection groove, a machine tail, a scraper chain and the like. The middle groove is a main part of a scraper conveyor, and the middle groove of the common cast-weld bottom sealing structure mainly comprises a baffle ledge, a shovel board ledge, a middle plate, a bottom plate and the like; the special high-strength composite C-shaped groove mainly comprises a baffle ledge, a shovel board ledge, a middle plate, a bottom plate, a C-shaped groove and the like, wherein the middle groove is used as a channel for bearing and conveying materials and bears the abrasion of a scraping plate and the materials, so that the service life of the middle groove directly influences the normal production of a working face. Because the working condition is comparatively abominable in the pit, the wearing and tearing of middle part groove are very fast, in order to slow down the wearing and tearing speed of middle part groove, the most commonly used technical means is exactly that melt at middle part groove medium plate upper surface and cover a layer of special alloy material now, improves the wearability and the hardness of medium plate, goes to improve middle part groove life-span in order to guarantee production, like the structure shown in patent CN 105256308A. However, according to the current means of coating the wear-resistant layer on the upper surface of the middle plate, the following disadvantages exist:

1. in the underground, the middle groove, the bottom plate and the ledge are in direct contact with materials and scrapers, although the abrasion resistance and hardness of the middle plate are improved by the melt-coating abrasion-resistant layer, the abrasion speed of the ledge and the bottom plate is still not slowed down, and the service life of the middle groove is still not substantially prolonged.

2. After the wear-resistant layer is coated on the upper surface of the middle plate, the friction coefficient of the middle plate is increased, and the power consumption is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a full cladding middle trough.

The object of the utility model is achieved in the following way: a full-cladding middle trough comprises a baffle ledge, a shovel board ledge, a middle plate and a bottom plate, wherein the middle plate and the bottom plate are connected with the baffle ledge and the shovel board ledge; an upper chain channel is arranged above the middle plate, and a lower chain channel is arranged between the middle plate and the bottom plate; and the upper surface of the middle plate, the first C-shaped surface positioned in the upper chain channel area on the baffle ledge and the second C-shaped surface positioned in the upper chain channel area on the shovel board ledge are provided with cladding layers covering the whole surface.

The whole surface of the upper surface of the bottom plate is also provided with a cladding layer.

And the third C-shaped surface of the baffle ledge in the lower chain way area and the fourth C-shaped surface of the shovel ledge in the lower chain way area are provided with cladding layers covering the whole surface.

The cladding layer is a wear-resistant alloy cladding layer.

An upper panel and a lower panel are arranged on one side of the baffle groove side, which is far away from the upper chain channel and the lower chain channel; the upper panel and the lower panel are respectively arranged at the upper end and the lower end of the baffle ledge; the width of the upper panel is 100-150 mm, and the width of the lower panel is 60-100 mm; the length of the upper panel and the lower panel is equal to that of the baffle ledge.

And support ribs are arranged on the lower surface of the upper panel and the upper surface of the lower panel.

The utility model has the beneficial effects that: the utility model can well slow down the abrasion speed of the bottom plate and the ledge and improve the integral service life of the middle trough. The wear-resistant alloy cladding layer can still be continuously clad after being worn, so that the subsequent maintenance cost is saved. After the underground running-in period of the middle groove, the cladding surface is smooth like a mirror surface, the friction coefficient is rapidly reduced to 50% of the original friction coefficient, and the power consumption can be reduced by 10%.

Drawings

FIG. 1 is a first embodiment of the present invention illustrating a structure of a middle trough.

FIG. 2 is a schematic illustration of a baffle ledge.

FIG. 3 is a second embodiment of the present invention illustrating the structure of the middle trough.

Wherein, 1 is baffle ledge, 2 is shovel ledge, 3 is middle plate, 4 is bottom plate, 5 is upper chain way, 6 is lower chain way, 7 cladding layer, 11 is first C type face, 12 is brace rod, 13 is third C type face, 14 is upper panel, 15 is lower panel, 16 is anti-skidding ear, 17 is fabrication hole, 22 is second C type face, 24 is fourth C type face.

Detailed Description

In the present invention, unless otherwise specifically defined and limited, technical terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention pertains. The terms "connected", "fixed", "arranged" and the like are to be understood in a broad sense, and may be fixedly connected, detachably connected or integrated; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features, or indirectly contacting the first and second features through intervening media. Furthermore, a first feature may be "on" or "over" or "above" a second feature, and the like, may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" or "beneath" a second feature may be directly under or obliquely under the first feature or may simply mean that the first feature is at a lesser level than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Terms used in the description such as "center", "lateral", "longitudinal", "length", "width", "thickness", "height", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated.

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. As shown in fig. 1-3, a full cladding middle trough comprises a baffle ledge 1, a shovel ledge 2, and a middle plate 3 and a bottom plate 4 connecting the baffle ledge 1 and the shovel ledge 2; an upper chain channel 5 is arranged above the middle plate 3, and a lower chain channel 6 is arranged between the middle plate 3 and the bottom plate 4; the upper surface of the middle plate 3, the first C-shaped surface 11 of the baffle ledge 1 in the area of the upper chain channel 5 and the second C-shaped surface 22 of the shovel ledge 2 in the area of the upper chain channel 5 are all provided with a cladding layer 7 covering the whole surface.

Further, the entire surface of the upper surface of the base plate 4 is also provided with a cladding layer 7.

Still further, the third C-shaped surface 13 of the baffle ledge 1 in the area of the lower link 6 and the fourth C-shaped surface 24 of the shovel ledge 2 in the area of the lower link 6 are both provided with a cladding layer 7 covering the whole surface.

Wherein figure 1 is a high strength composite C-shaped central trough. In fig. 3 is the center groove of a conventional cast on construction. The positions of the cladding layers of the two middle tanks are consistent.

Wherein, the cladding layer 7 is a wear-resistant alloy cladding layer. The wear-resistant alloy powder for cladding comprises the following components: the main alloy system is Fe-C-Cr-B-Si, and strong alloy elements such as Nb, Mo, V and the like are added at the same time, and a high-chromium cast iron type cladding layer is formed after cladding. The structure is mainly martensite, eutectic carbide and a small amount of retained austenite, and has high hardness, excellent wear resistance and good corrosion resistance. ) The utility model can well slow down the abrasion speed of the bottom plate and the ledge and improve the integral service life of the middle trough. The wear-resistant alloy cladding layer can still continue cladding after being worn, and the subsequent maintenance cost is saved. After the underground running-in period of the middle groove, the cladding surface is smooth like a mirror surface, the friction coefficient is rapidly reduced to 50% of the original friction coefficient, and the power consumption can be reduced by 10%.

In addition, the plasma cladding process can lead to deformation of the ledge, particularly the baffle ledge 1. In order to accommodate cladding, the ledge structure may be modified somewhat to reduce the amount of deformation of the baffle ledge 1. An upper panel 14 and a lower panel 15 are arranged on one side of the baffle ledge 1, which is far away from the upper chain channel 5 and the lower chain channel 6; the upper panel 14 and the lower panel 15 are respectively arranged at the upper end and the lower end of the baffle ledge 1; the width of the upper panel 14 is 100-150 mm, and the width of the lower panel 15 is 60-100 mm; the length of the upper panel 14 and the lower panel 15 is equal to the length of the baffle ledge 1.

The lower surface of the upper panel 14 and the upper surface of the lower panel 15 may be provided with support ribs 12 to further increase the strength of the baffle ledge 1. In addition, the lower panel 15 is not arranged below the anti-slip lugs 16 on the baffle ledge 1, and after the lower panel 15 is arranged, the fabrication holes 17 are required to be arranged on the lower panel 15 at positions corresponding to the anti-slip lugs 16. One end of the fabrication hole 17 is opened, so that the anti-slip lugs 16 can be conveniently inserted with pin shafts and the like.

In the specific implementation: cladding layers 7 are respectively arranged on the upper surface of the bottom plate 4, the upper surface of the middle plate 3, the baffle ledge 1 and the first C-shaped surface 11, the second C-shaped surface 22, the third C-shaped surface 13 and the fourth C-shaped surface 24 of the shovel plate groove 2. After a certain period of time, if the cladding layer 7 is damaged, the damaged portion can be repaired.

The features of the embodiments described above may be arbitrarily combined, and the combination of the features is not contradictory, and should be considered as a range described in the present specification. The technical solution according to the present invention and equivalents or changes thereof, as well as several changes and modifications made therein, should also be considered as the protection scope of the present invention without departing from the overall concept of the present invention.

Claims

1. A full-cladding middle trough comprises a baffle ledge, a shovel board ledge, a middle plate and a bottom plate, wherein the middle plate and the bottom plate are connected with the baffle ledge and the shovel board ledge; an upper chain channel is arranged above the middle plate, and a lower chain channel is arranged between the middle plate and the bottom plate; the method is characterized in that: and the upper surface of the middle plate, the first C-shaped surface positioned in the upper chain channel area on the baffle ledge and the second C-shaped surface positioned in the upper chain channel area on the shovel board ledge are provided with cladding layers covering the whole surface.

2. A full cladding tundish according to claim 1, wherein: the whole surface of the upper surface of the bottom plate is also provided with a cladding layer.

3. A full cladding tundish according to claim 2, wherein: and the third C-shaped surface of the baffle ledge in the lower chain way area and the fourth C-shaped surface of the shovel ledge in the lower chain way area are provided with cladding layers covering the whole surface.

4. A fully clad central trough according to any one of claims 1 to 3 wherein: the cladding layer is a wear-resistant alloy cladding layer.

5. A fully clad tundish according to any one of claims 1 to 3 wherein: an upper panel and a lower panel are arranged on one side of the baffle groove side, which is far away from the upper chain channel and the lower chain channel; the upper panel and the lower panel are respectively arranged at the upper end and the lower end of the baffle ledge; the width of the upper panel is 100-150 mm, and the width of the lower panel is 60-100 mm; the length of the upper panel and the lower panel is equal to that of the baffle ledge.

6. A full cladding center channel as claimed in claim 5, wherein: and support ribs are arranged on the lower surface of the upper panel and the upper surface of the lower panel.