CN215292470U

CN215292470U - Rolling sliding shoe for coal cutter

Info

Publication number: CN215292470U
Application number: CN202120795990.8U
Authority: CN
Inventors: 张晓峰; 马兰英; 亓鹏; 张晓琪; 郝建
Original assignee: Shandong Lanquan Enterprise Development Co ltd
Current assignee: Shandong Lingxiyuan Technology Development Co ltd
Priority date: 2020-11-30
Filing date: 2021-04-19
Publication date: 2021-12-24
Anticipated expiration: 2031-04-19

Abstract

The utility model provides a rolling sliding shoe for a coal cutter, which comprises a shoe body, wherein the shoe body is provided with a guide surface; the boot further comprises a rolling piece arranged on the guide surface, wherein the rolling piece is provided with a rolling part extending out of the guide surface and an elastic supporting part arranged between the rolling part and the boot body. In the working process of the coal mining machine, the rolling part can roll along the guide rail to advance along with the meshing of the travelling wheel of the coal mining machine and the guide rail, so that the sliding friction between the sliding shoes of the coal mining machine and the guide rail is converted into rolling friction, the resistance between the sliding shoes and the guide rail is greatly reduced, the abrasion degree of the sliding shoes is effectively reduced, the service life of parts of the coal mining machine is prolonged, and the coal mining machine has better stability in advancing through the elastic supporting part arranged between the rolling part and the shoe body.

Description

Rolling sliding shoe for coal cutter

Technical Field

The utility model belongs to the technical field of coal mining equipment, a coal-winning machine is related to, especially relate to a coal-winning machine is with rolling piston shoe.

Background

The coal mining machine is the most important one in mining machinery, is the core equipment of the fully mechanized mining face, and mainly completes operations such as coal dropping, coal charging and the like. The skid shoe of the coal mining machine is an important part of the coal mining machine and also an important component of a traction part of the coal mining machine, is mainly used for supporting the coal mining machine to run on a scraper machine slideway, is an important supporting point for stabilizing normal coal mining of the coal mining machine, and plays a role in guiding in the advancing process. Due to different geological conditions of underground coal mining working faces and complex underground environment, coal dust and coal slime often fall on the guide rails, so that the coal mining machine has inclination angles with different angles in the longitudinal direction and the transverse direction in the operation process, and even jolts, the skid shoes are stressed unevenly, and the abrasion of the skid shoes is accelerated.

The guide hole of the sliding shoe of the existing coal mining machine is rectangular, namely four frictional sliding surfaces are all planes, and the guide hole is used for inserting a guide rail of a scraper conveyor. When the coal mining machine works underground, the walking of the coal mining machine on the scraper conveyor is realized through the engagement between the walking wheels and the guide rails, and the sliding shoes of the coal mining machine are severely worn due to the sliding friction between the sliding shoes of the coal mining machine and the guide rails of the scraper conveyor, so that the running stability of the coal mining machine is influenced, and the service life of the sliding shoes is shortened. In a real case, the G750/1840-WD coal mining machine has serious damage and abrasion to the sliding shoes of the coal mining machine due to various factors during the use process, and the abrasion reaches dozens in a short period, thereby causing serious influence on underground coal mining.

Therefore, how to reduce the friction between the skid shoe of the coal mining machine and the guide rail of the scraper conveyor on the basis of the prior art, thereby prolonging the service life of the skid shoe, is a problem to be solved by the technical personnel in the field.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a coal-winning machine is with rolling piston shoes, this rolling piston shoes can convert the sliding friction between piston shoes and the guide rail to rolling friction to provide necessary shock attenuation effect during for piston shoes operation, thereby reduce piston shoes's loss, increase of service life.

In order to solve the technical problem, the utility model provides a rolling sliding shoe for a coal cutter, which comprises a shoe body, wherein the shoe body is provided with a guide surface; the boot further comprises a rolling piece arranged on the guide surface, wherein the rolling piece is provided with a rolling part extending out of the guide surface and an elastic supporting part arranged between the rolling part and the boot body. The utility model discloses replace the sliding friction of spigot surface and guide rail with the rolling friction of roll portion and guide rail to reduce the friction loss of piston shoes, and advance the in-process through the supporting resilient part and play certain cushioning effect when meetting the obstacle at the roll portion.

In an exemplary embodiment of the rolling shoe for a coal mining machine, the elastic support is a polyurethane elastic support. The polyurethane material has stable property, good elastic effect and more deformation bearing times, and is suitable for severe underground environment.

In an exemplary embodiment of the rolling shoe for a coal mining machine, the elastic support portion is integrally connected with the rolling portion. The buffer structure is convenient to manufacture and install and can generate a more direct buffer effect.

In one exemplary embodiment of the rolling slipper for a coal mining machine, a mounting hole is opened in a guide surface of a shoe body, and a rolling portion and an elastic support portion are mounted in the mounting hole.

In one exemplary embodiment of the rolling shoe for a coal mining machine, the shoe body is provided with a mounting groove at the guide surface, the elastic support portion is mounted to the mounting groove, and the elastic support portion is formed with a mounting hole in which the rolling portion is mounted.

In an exemplary embodiment of the rolling shoe for a coal mining machine, a polyurethane buffer body is further installed in the positioning hole, an end portion of the rolling portion, which is fitted into the positioning hole, abuts against the polyurethane buffer body, and the hardness of the polyurethane buffer body is less than that of the elastic support portion.

In an exemplary embodiment of a rolling shoe for a coal mining machine, the guide surface includes a top surface, two side surfaces adjacent to the top surface, and a bottom surface connected to one of the side surfaces, the top surface, the side surfaces, and the bottom surface each having a rolling member mounted thereon.

In one exemplary embodiment of a rolling slipper for a coal mining machine, a locating groove is formed in a side surface of a rolling member, a locating protrusion is formed in a boot body, and the locating protrusion extends into the locating groove to stop the rolling member from coming off.

In an exemplary embodiment of the rolling shoe for a coal mining machine, the resilient support is a spring.

In an exemplary embodiment of a rolling shoe for a coal mining machine, the resilient support portion is provided with a plurality of mounting holes.

The utility model discloses convert sliding friction into rolling friction, and increased the elastic support part for the rolling member, both reduced the piston shoes degree of wear, still strengthened the stability of coal-winning machine operation simultaneously. The above-mentioned technical features and advantages of a rolling shoe for a coal mining machine and the manner of realisation thereof will be further explained in a clearly understandable manner in the following description of preferred embodiments in connection with the accompanying drawings.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

Fig. 1 is a schematic longitudinal sectional view of a rolling shoe for a coal mining machine according to an embodiment of the present invention;

FIG. 2 is a sectional view of a rolling element structure according to an embodiment of the present invention;

fig. 3 is an exploded perspective view of an embodiment of the present invention;

FIG. 4 is a sectional view of the embodiment of the present invention

Wherein:

rolling slipper 10, boot body 11, guide surface 12, top surface 1201, side surface 1202, bottom surface 1203, rolling member 13, rolling part 1301, elastic support part 1302, mounting hole 20, positioning hole 30, mounting groove 40, polyurethane buffer 50, positioning groove 60, positioning protrusion 70 and guide rail 80.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

It should be noted that the terms of left, right, up, down, front, back, and the like in the embodiments of the present invention are only relative concepts or are referred to a normal use state of the product, i.e., a traveling direction of the product, and should not be considered as limiting.

Second, when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The present technology is further described below with reference to the accompanying drawings.

In a specific embodiment, the present invention provides a rolling slipper 10 for a coal mining machine, which includes a shoe body 11 and a rolling member 13 provided on the shoe body 11. The lower part of the shoe body 11 is enclosed into a rectangular guide hole for inserting a guide rail 80 of a scraper conveyor. The surface of the shoe 11 that is in direct contact with the guide rail 80 during operation of the winning machine is called the guide surface 12, and the rolling elements 13 are arranged on the guide surface 12. The rolling member 13 is divided into a rolling portion 1301 and an elastic support portion 1302, the rolling portion 1301 extends out of the guide surface 12 to directly contact the guide rail 80, and sliding friction between the guide surface 12 and the guide rail 80 is replaced by rolling friction. The elastic support portion 1302 is provided between the rolling portion 1301 and the shoe body 11, and the rolling portion 1301 is supported outside the shoe body 11 with respect to the shoe body 11 by the elastic action of the elastic support portion 1302, pushing the rolling portion 1301 to keep continuous effective contact with the guide rail 80.

In a preferred implementation, the elastic support 1302 is a polyurethane elastic support 1302. The underground environment is complex, more dust and coal slag are easily attached to a machine or enter the joint of parts, and chemical elements such as sulfur exist in underground air, so that the key parts for the coal mining machine are corroded to a certain extent. The polyurethane is polymerized by polyester (or polyether) and diisocyanato compounds, and has the advantages of good wear resistance, good elasticity, high hardness, oil resistance, cold resistance and the like. As the non-metallic elastomer, polyurethane has stable property, is not easy to react with substances in a downhole environment, and has strong oxygen resistance, so the polyurethane has a long service life. In the production process, the coal cinder enters the mounting hole 20 or the connecting part of the rolling piece 13 and the shoe body 11, the polyurethane elastic supporting part 1302 is an elastic part and is in a compression and expansion state in the working process, the coal cinder entering the mounting hole 20 can be extruded out during expansion, the abrasion of the elastic supporting part 1302 or the shoe body 11 is reduced, and the service life is prolonged. When the elastic support portion 1302 is installed in the installation hole 20, an interference fit may be adopted, that is, the outer diameter of the polyurethane elastic support portion 1302 is slightly larger than the inner diameter of the installation hole 20, and the polyurethane elastic support portion 1302 is expanded radially all the time, so that coal cinder and the like can be effectively prevented from entering the installation hole 20. Of course, it will be understood by those skilled in the art that the elastic support portion 1302 may also be made of other equivalent performance non-metal elastomers.

The rolling part 1301 and the elastic supporting part 1302 can be integrally connected and manufactured in the manufacturing process, and the polyurethane elastic supporting part 1302 can be manufactured in a casting type process mode and is integrally connected with the rolling part 1301 in the casting process. The rolling member 13 thus machined is easy to install, reduces wear between the rolling portion 1301 and the elastic support portion 1302, and prolongs the service life.

The guide hole of the skid shoe for a coal mining machine is rectangular, i.e. the skid shoe has four guide surfaces 12, a top surface 1201, two side surfaces 1202 connected to the top surface 1201 and a bottom surface 1203 connected to one of the side surfaces 1202. When the rolling members 13 are installed, the arrangement shown in fig. 1 is preferred, that is, the rolling members 13 are respectively installed on the top surface 1201, the side surface 1202 and the bottom surface 1203. When the coal mining machine operates, the machine body inevitably inclines, and a certain inclination angle is correspondingly generated between the sliding shoe and the guide rail 80, namely, the top surface 1201 of the shoe body 11 is not only contacted with the guide rail 80, but also the side surface 1202 and the bottom surface 1203 of the shoe body have a relatively large probability of contacting with the guide rail 80 to generate friction, and a serious abrasion condition is generated on the shoe body 11. Therefore, the four guide surfaces 12 are all provided with the rolling pieces 13, so that rolling friction is still kept between the sliding shoes and the guide rails 80 when the coal mining machine is in the above condition, the abrasion is reduced, and the service life is prolonged.

In a schematic structural view of an exemplary embodiment of a rolling slipper 10 for a coal mining machine shown in fig. 2, a mounting hole 20 is opened on a guide surface 12 of a shoe body 11, a rolling member 13 is mounted in the mounting hole 20, an elastic support portion 1302 is disposed between a rolling portion 1301 and the shoe body 11, a portion of the rolling portion 1301 capable of rolling extends to the outside of the shoe body 11, and a large portion of the rolling portion 1301 is located in the mounting hole 20. The mounting holes 20 provide accurate positioning for the rolling elements 13, the positions of the mounting holes 20 can be designed according to requirements before the manufacturing of the sliding shoe, and the sliding shoe is directly molded according to the design during the manufacturing, so that the manufacturing cost is reduced.

The embodiment of the utility model provides an in, the lateral wall of rolling member 13 is formed with constant head tank 60, and constant head tank 60 both ends form spacing boss, and the mounting hole 20 lateral wall of the boots body 11 is formed with location arch 70, and in location arch 70 stretched into constant head tank 60, the partial region's that rolling portion 1301 is in at least the mounting hole 20 external diameter was greater than the internal diameter of mounting hole 20 promptly. Specifically, the elastic support portion 1302 gives the rolling portion 1301 an outward elastic force with respect to the boot body 11, and the upper side of the limit boss of the rolling portion 1301 is blocked by the positioning protrusion 70 of the boot body 11, thereby preventing the rolling member 13 or the rolling portion 1301 from coming off from the boot body 11. Similarly, when the weight of the coal mining machine is too heavy, the elastic force of the elastic support part 1302 on the rolling part 1301 is not enough to enable the rolling part 1301 to be in contact with the guide rail 80, and at the moment, the limiting boss on the lower side of the rolling part 1301 is blocked by the positioning boss 70 of the shoe body 11, so that the rolling part 1301 is kept in contact with the guide rail 80, sliding friction is avoided, and abrasion is reduced.

In the schematic structural diagram of an exemplary embodiment of the rolling slipper 10 for a coal mining machine shown in fig. 4, the rolling part 1301 and the elastic support part 1302 are separate structures, the guide surface 12 of the shoe body 11 is provided with an installation groove 40, the elastic support part 1302 is installed in the installation groove 40, and the elastic support part 1302 is further provided with a positioning hole 30 for installing the rolling part 1301, unlike the design of integrally molding the rolling part 1301 and the elastic support part 1320. In this embodiment, the rolling portion 1301 is wrapped by the elastic support portion 1302 in the positioning hole 30, so that when the rolling portion 1301 moves radially or axially during friction, the rolling portion 1301 can obtain a buffering effect from the elastic support portion 1302, and the collision friction loss between the rolling portion 1301 and the sliding shoe is reduced.

Preferably, the elastic support portion 1302 may be provided with a plurality of positioning holes 30 for mounting the rolling portion 1301, and the rolling portion 1301 is in direct contact with the guide rail 80 to indirectly support the boot body 11 through the elastic support portion 1302. When the plurality of rolling parts 1301 are installed on the elastic support part 1302, the supporting force from the rolling parts 1301 is uniformly applied to the elastic support part 1302, and is not always applied to a certain point or a certain area of the elastic support part 1302, which is beneficial to the shape recovery of the elastic material and avoids the damage of the structure of the elastic support part 1302. In addition, the plurality of rolling parts 1301 can be installed by forming one installation groove 40 on the guide surface 12, so that the manufacturing of the shoe is simplified. And the elastic support part 1302 can be completely installed with the rolling part 1301 before being installed in the shoe body 11, improving the assembling efficiency.

Referring to fig. 3 and 4, a polyurethane buffer body 50 is further installed in the positioning hole 30, the hardness of the polyurethane buffer body 50 is less than that of the elastic support portion 1302, the polyurethane buffer body 50 is installed between the rolling portion 1301 and the elastic support portion 1302, the end portion of the rolling portion 1301, which is installed in the positioning hole 30, abuts against the polyurethane buffer body 50, and the polyurethane buffer body 50 further buffers the axial movement of the rolling portion 1301 between the rolling portion 1301 and the elastic support portion 1302, namely, the running process of the coal mining machine is further damped, and the running stability of the coal mining machine is improved.

In another embodiment of the present invention, the elastic support portion 1302 is a spring, and the spring is a compression coil spring and made of alloy steel. The spring presses the rolling portion 1301, so that the rolling portion 1301 is in contact with the guide rail 80. In the underground, coal ash or coal slime inevitably falls on the guide rail 80 of the scraper conveyor, so the guide rail 80 where the sliding shoe of the coal mining machine advances is not flat and smooth, the spring is used as an elastic mechanical part and has the capacity of elastic deformation, and when the rolling part 1301 passes through the coal slime protruding on the guide rail 80, the spring can play a role in buffering, so that the stability of the coal mining machine during advancing is ensured. In addition, the spring is convenient to manufacture and replace, and springs with different hardness or different lengths can be used according to actual production requirements.

The above is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. The invention is not limited to the embodiments described herein, but is capable of other embodiments according to the invention, and may be used in various other applications, including, but not limited to, industrial, or industrial. Therefore, the equivalent changes made according to the shape, structure and principle of the present invention should be covered in the protection scope of the present invention.

Claims

1. The rolling slipper for the coal mining machine comprises a slipper body, wherein the slipper body is provided with a guide surface, and is characterized by further comprising a rolling piece arranged on the guide surface, wherein the rolling piece is provided with a rolling part extending out of the guide surface and an elastic supporting part arranged between the rolling part and the slipper body.

2. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the elastic supporting part is a polyurethane elastic supporting part.

3. The rolling shoe for a coal mining machine according to claim 2, characterized in that: the elastic support part is integrally connected with the rolling part.

4. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the guide surface of the boot body is provided with a mounting hole, and the rolling part and the elastic supporting part are mounted in the mounting hole.

5. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the boot body is in the spigot surface is equipped with the mounting groove, the elastic support portion install in the mounting groove, just the elastic support portion is formed with the installation the locating hole of roll portion.

6. The rolling shoe for a coal mining machine according to claim 5, characterized in that: the rolling part is arranged in the positioning hole, the end part of the positioning hole is abutted against the polyurethane buffer body, and the hardness of the polyurethane buffer body is smaller than that of the elastic supporting part.

7. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the guide surface comprises a top surface, two side surfaces connected with the top surface and a bottom surface connected with one of the side surfaces, and the rolling pieces are respectively arranged on the top surface, the side surfaces and the bottom surface.

8. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the side of the rolling member is formed with a positioning groove, the boot body is formed with a positioning bulge, and the positioning bulge extends into the positioning groove to stop the rolling member to be separated.

9. The rolling shoe for a coal mining machine according to claim 1, characterized in that: the elastic supporting part is a spring.

10. The rolling shoe for a coal mining machine according to claim 5, characterized in that: the elastic supporting part is provided with a plurality of positioning holes.