A friction and wear testing device for guide sliding shoes

Abstract

The embodiment of the present invention discloses a friction and wear test device for a guide shoe, comprising a base, on which a horizontal traction mechanism and a load loading mechanism are installed; the horizontal traction mechanism comprises a traction member, a grinding pair and a slide rail; the slide rail is arranged along the movement direction of the traction member, the grinding pair is arranged on the slide rail, and the movement end of the traction member is connected to the grinding pair; the load loading mechanism is located on the outer side of the slide rail, and the load loading mechanism is used to load the guide shoe. When testing the guide shoe, the guide shoe is connected to the load loading mechanism, and the grinding pair is fitted with the bottom of the guide shoe. First, the load loading mechanism is used to load a preset load on the guide shoe, and then the traction member is used to drive the grinding pair to slide back and forth on the slide rail, so that the grinding pair moves relative to the guide shoe, and the wear resistance of the guide shoe is obtained, so that the staff can select a suitable guide shoe according to the wear resistance of the guide shoe.

Description

Technical Field

[0001] The invention relates to the technical field of mining machinery, and in particular to a friction and wear testing device for a guide sliding shoe. Background Art

[0002] Mining machinery is a machine directly used for mineral mining and enrichment. Among them, coal mining machine is the most important type of mining machinery and one of the important equipment for realizing the mechanization and modernization of coal mine production.

[0003] The coal mining machine consists of a cutting part, a power part and a traction part. The cutting part includes a working mechanism and a reducer, the power part includes an electric motor and an electrical control box, and the traction part includes guide shoes and travel wheels, etc. The guide shoes provide guidance for the movement of the coal mining machine during the coal mining process on the working face, and the travel wheels enable the coal mining machine to move on the conveyor by meshing with the pin row of the scraper conveyor.

[0004] At present, coal mining machines often encounter pitching and tilting coal mining conditions during coal cutting operations. These two conditions are a great test for the wear resistance of the guide shoes of the coal mining machines. Therefore, it is very important to understand the strength and wear resistance of guide shoes of different models. However, there is no device for simulating the wear resistance of guide shoes in the prior art, so the staff cannot understand the wear resistance of the guide shoes, and thus cannot select suitable guide shoes. Summary of the invention

[0005] The purpose of the present invention is to provide a friction and wear testing device for a guide shoe, so as to solve the problem that there is no device in the prior art for performing simulation tests on the wear resistance of the guide shoe, so that the staff cannot understand the wear resistance of the guide shoe, thereby causing the staff to be unable to select suitable guide shoes.

[0006] The embodiment of the present invention provides a friction and wear testing device for a guide shoe, comprising a base, on which a horizontal traction mechanism and a load loading mechanism are installed;

[0007] The horizontal traction mechanism comprises a traction member, a grinding pair and a slide rail; the slide rail is arranged along the movement direction of the traction member, the grinding pair is arranged on the slide rail, and the movement end of the traction member is connected to the grinding pair;

[0008] The load loading mechanism is located outside the slide rail, and is used to load the guide slide shoe.

[0009] Specifically, the slide rail comprises two tracks arranged side by side and in parallel, and a plurality of rolling elements are arranged at the upper ends of the two tracks.

[0010] Specifically, the rolling element is a rolling bearing.

[0011] Specifically, the grinding pair includes a friction and wear portion, a support beam and a bottom plate. The lower portion of the friction and wear portion is connected to the bottom plate through the support beam, and the moving end of the traction member is connected to one of the support beams.

[0012] Specifically, the load loading mechanism includes two load loading parts and a connecting piece;

[0013] The slide rail is located between the two load loading parts, the two load loading parts are vertically arranged relative to the base, the connecting piece is detachably connected to the two load loading parts, and the connecting piece is used to connect the guide slide shoe with the two load loading parts so that the load loading part loads the guide slide shoe.

[0014] Specifically, the connecting member includes a connecting pin, and a connecting hole is provided at the top end of each load loading portion.

[0015] Specifically, a protection mechanism is also provided on the base, and the protection mechanism is arranged between the load loading mechanism and the slide rail.

[0016] Specifically, the protection mechanism includes two partitions, each of which is provided with a waist-shaped hole on its upper portion, and one of the partitions is located between one of the slide rails and a load loading portion, and the other partition is located between the other of the slide rails and another of the load loading portions.

[0017] Specifically, the load loading part and the traction member are both hydraulic cylinders.

[0018] Specifically, the base is an iron plate.

[0019] According to a friction and wear testing device for a guide shoe provided by an embodiment of the present invention, when testing the guide shoe, the guide shoe is connected to a load loading mechanism, and the grinding pair is fitted with the bottom of the guide shoe. The load loading mechanism is first used to load a preset load on the guide shoe, and then the traction member is used to drive the grinding pair to slide back and forth on the slide rail, so that the grinding pair moves relative to the guide shoe to obtain the wear resistance of the guide shoe. In this way, the staff can select a suitable guide shoe according to the wear resistance of the guide shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings of the present invention are used as part of the embodiments of the present invention for understanding the present invention. The embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0021] In the attached figure:

[0022] Figure 1 It is a front view of a friction and wear testing device for a guide shoe according to an optional embodiment of the present invention;

[0023] Figure 2 for Figure 1 Side view of

[0024] Figure 3 It is the structural diagram of the partition;

[0025] Figure 4 This is the structural diagram of the slide rail;

[0026] Figure 5 for Figure 1 A top view of

[0027] Figure 6 This is the main view of the grinding pair;

[0028] Figure 7 for Figure 6 Side view of

[0029] Figure 8 for Figure 7 Top view of the .

[0030] Description of Reference Numerals

[0031] 1-base, 2-horizontal traction mechanism, 201-traction member, 202-grinding pair, 2021-friction and wear part, 2022-Yuanbao beam, 2023-support beam, 2024-bottom plate, 3-guide slide shoe, 4-connecting hole, 5-load loading mechanism, 501-load loading part, 502-connecting member, 6-slide rail, 601-rail, 602-rolling member, 7-protection mechanism, 701-partition, 702-waist-shaped hole. DETAILED DESCRIPTION

[0032] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0034] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the concept of these exemplary embodiments to those of ordinary skill in the art.

[0035] like Figure 1 and Figure 5 As shown, an embodiment of the present invention provides a friction and wear testing device for a guide shoe, comprising a base 1, on which a horizontal traction mechanism 2 and a load loading mechanism 5 are installed; the horizontal traction mechanism 2 comprises a traction member 201, a grinding pair 202 and a slide rail 6; the slide rail 6 is arranged along the movement direction of the traction member 201, the grinding pair 202 is arranged on the slide rail 6, and the moving end of the traction member 201 is connected to the grinding pair 202; the load loading mechanism 5 is located on the outer side of the slide rail 6, and the load loading mechanism 5 is used to load the guide shoe 3.

[0036] When testing the guide shoe 3, the guide shoe 3 is connected to the load loading mechanism 5, and the grinding pair 202 is fitted with the lower hook surface of the guide shoe 3. First, the load loading mechanism 5 is used to load the guide shoe 3 with a preset load, and then the traction member 201 is used to drive the grinding pair 202 to slide back and forth on the slide rail 6, so that the grinding pair 202 moves relative to the guide shoe 3 to obtain the wear resistance of the guide shoe 3. In this way, the staff can select a suitable guide shoe 3 according to the wear resistance of the guide shoe 3. Among them, the preset load is the result obtained by the force analysis of the guide shoe 3 under the extreme working condition by ADAMS.

[0037] In the above embodiment, if Figure 4 and Figure 5 As shown, the slide rail 6 includes two rails 601 arranged side by side and in parallel, and a plurality of rolling elements 602 are arranged at the upper ends of the two rails 601. Optionally, the rolling elements 602 are rolling bearings.

[0038] The rolling element 602 can reduce the friction resistance between the grinding pair 202 and the track 601, so that the grinding pair 202 can slide more smoothly on the track 601. Furthermore, the distance between two adjacent rolling elements 602 is equal, and the number of rolling elements 602 can be designed by the staff according to the length of the track 601, and this embodiment does not make a strict limitation.

[0039] In the above embodiment, if Figure 6 , Figure 7 and Figure 8As shown, the grinding pair 202 includes a friction and wear portion 2021, a support beam 2023 and a base plate 2024. The lower portion of the friction and wear portion 2021 is connected to the base plate 2024 via the support beam 2023, the moving end of the traction member is connected to one of the support beams 2023, and the moving end of the traction member 201 is connected to one of the support beams 2023.

[0040] During the test, the friction wear part 2021 is fitted with the lower hook surface of the guide slide shoe 3, and the traction member 201 is used to drive the reciprocating motion of the friction wear part 2021, so that friction is generated between the friction wear part 2021 and the lower hook surface of the guide slide shoe 3, thereby obtaining the wear resistance of the guide slide shoe 3. The bottom plate 2024 is arranged on the slide rail 6 and contacts the rolling element 602, so that when the traction member 201 drives the grinding pair 202 to move, the friction between the bottom plate 2024 and the slide rail 6 is reduced. Among them, the lower part of the friction wear part 2021 can be connected to the support beam 2023 through the ingot beam 2022. The friction wear part 2021 can be composed of a plurality of pin rows connected in sequence.

[0041] In the above embodiment, if Figure 2 As shown, the load loading mechanism 5 includes two load loading parts 501 and a connecting member 502; the slide rail 6 is located between the two load loading parts 501, the two load loading parts 501 are vertically arranged relative to the base 1, and the connecting member 502 is detachably connected to the two load loading parts 501, and the connecting member 502 is used to connect the guide shoe 3 with the two load loading parts 501 so that the load loading part 501 loads the guide shoe 3.

[0042] In a specific application, when the guide shoe 3 is installed in the test device, the connector 502 can be passed through the mounting hole on the guide shoe 3, and then the two ends of the connector 502 are fixed on the two load loading parts 501, and the lower hook surface of the guide shoe 3 is fitted with the grinding pair 202, and then the height of the load loading part 501 in the vertical direction is adjusted, so that the load is applied to the guide shoe 3 through the connector 502. Specifically, the higher the height of the load loading part 501, the smaller the load applied to the guide shoe 3; the lower the height of the load loading part 501, the greater the load applied to the guide shoe 3, so that the pitching working condition of the coal mining car can be simulated, making the test device closer to the actual working condition. After completing the test, the connector 502 is removed from the load loading part 501, and the guide shoe 3 can be removed from the test device.

[0043] In this embodiment, the guide shoe 3 is loaded vertically, which can simulate the extreme load conditions at the work site and improve the adaptability of the test device.

[0044] Furthermore, if Figure 2As shown, the connecting member 502 includes a connecting pin, and a connecting hole 4 is provided at the top end of each load loading portion 501 .

[0045] Through the cooperation between the pin shaft and the connecting hole 4, a detachable connection between the connecting member 502 and the load loading part 501 can be achieved, and it is convenient for workers to disassemble and install.

[0046] In the above embodiment, if Figure 2 As shown, a protection mechanism 7 is also provided on the base 1 , and the protection mechanism 7 is arranged between the load loading mechanism 5 and the slide rail 6 .

[0047] The protection mechanism 7 protects the load-applying mechanism 5 when the traction member 201 drives the grinding pair 202 to move back and forth, thereby ensuring the stability and reliability of the test device.

[0048] Specifically, Figure 2 and Figure 3 As shown, the protection mechanism 7 includes two partitions 701 , each of which has a waist-shaped hole 702 on its upper portion, and one of the partitions 701 is located between a slide rail 6 and a load loading portion 501 , and the other partition 701 is located between another slide rail 6 and another load loading portion 501 .

[0049] The partition 701 can isolate the slide rail 6 from the load loading part 501, thereby avoiding interference between the sliding action of the grinding pair 202 and the lifting and lowering action of the load loading part 501, and the waist-shaped hole 702 arranged on the partition 701 can avoid obstruction to the up and down movement of the connecting part 502, so that the load loading part 501 can drive the connecting part 502 to move up and down smoothly.

[0050] In the above embodiment, the load applying part 501 and the pulling member 201 are both hydraulic cylinders.

[0051] Specifically, the hydraulic cylinder serving as the traction member 201 has a telescopic rod connected to the support beam 2023202 of the grinding pair 202 , so that the telescopic movement of the telescopic rod of the hydraulic cylinder drives the support beam 2023202 to perform linear reciprocating motion on the track 601 .

[0052] The hydraulic cylinder serving as the load loading part 501 has a connecting hole 4 on its telescopic rod, so as to achieve a detachable connection with the pin shaft, and the telescopic direction of the hydraulic cylinder telescopic rod is perpendicular to the base 1, so that the pin shaft is driven to move up and down by the telescopic movement of the telescopic rod, thereby adjusting the load loaded on the guide shoe 3.

[0053] In the above embodiment, the base 1 is an iron plate, which has good impact resistance and reliability, thereby further improving the impact resistance and reliability of the test device.

[0054] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A friction and wear test device for a guide shoe, characterized in that: It comprises a base, on which a horizontal traction mechanism and a load loading mechanism are installed; The horizontal traction mechanism comprises a traction member, a grinding pair and a slide rail; the slide rail is arranged along the movement direction of the traction member, the grinding pair is arranged on the slide rail, and the movement end of the traction member is connected to the grinding pair; The load loading mechanism is located outside the slide rail, and is used to load the guide slide shoe; The slide rail comprises two rails arranged side by side and in parallel, and a plurality of rolling elements are arranged at the upper ends of the two rails; The load loading mechanism includes two load loading parts and a connecting piece; The slide rail is located between the two load loading parts, the two load loading parts are vertically arranged relative to the base, the connecting member is detachably connected to the two load loading parts, and the connecting member is used to connect the guide slide shoe with the two load loading parts so that the load loading parts load the guide slide shoe; The grinding pair comprises a friction and wear portion, a support beam and a bottom plate, the lower portion of the friction and wear portion is connected to the bottom plate through the support beam, and the moving end of the traction member is connected to one of the support beams; The connecting member includes a connecting pin, and the top end of each load-loading portion is provided with a connecting hole; The base is also provided with a protection mechanism, and the protection mechanism is arranged between the load loading mechanism and the slide rail.

2. The friction and wear testing device for guide shoes according to claim 1, characterized in that: The rolling element is a rolling bearing.

3. The friction and wear testing device for guide shoes according to claim 1, characterized in that: The protection mechanism includes two partitions, each of which has a waist-shaped hole on its upper portion, and one of the partitions is located between one of the slide rails and a load loading portion, and the other of the partitions is located between the other of the slide rails and another of the load loading portions.

4. The friction and wear testing device for guide shoes according to claim 1, characterized in that: The load loading part and the traction part are both hydraulic cylinders.

5. The friction and wear testing device for guide shoes according to claim 1, characterized in that: The base is an iron plate.

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