A cutting height adjustable isometric thin seam coal cutter

Abstract

The application provides a cutting height adjustable isohypse thin coal seam shearer, and belongs to the technical field of coal mining equipment. The shearer comprises a coal wall side shoe assembly I, a coal wall side shoe assembly II, a mined-out side shoe assembly I, a mined-out side shoe assembly II, a shearer body, a height adjusting oil cylinder, a filling oil cylinder and a cutting drum. Four corners of the lower part of the shearer body are respectively provided with a coal wall side shoe installation position I and a coal wall side shoe installation position II facing the coal wall side, and a mined-out side shoe installation position I and a mined-out side shoe installation position II facing the mined-out side. The coal wall side shoe assembly I, the coal wall side shoe assembly II, the mined-out side shoe assembly I and the mined-out side shoe assembly II are respectively installed on the coal wall side shoe installation position I, the coal wall side shoe installation position II, the mined-out side shoe installation position I and the mined-out side shoe installation position II. The application can realize the overall height adjustment of the isohypse thin coal seam shearer and the height adjustment during the cutting along the working face (strike) and the vertical working face (dip).

Description

Technical Field

[0001] This invention belongs to the technical field of coal mining equipment, and specifically discloses a contour-type thin coal seam mining machine with adjustable cutting height. Background Technology

[0002] As a major coal-producing base in the world, my country has made significant breakthroughs in fully mechanized mining of thick coal seams and holds a leading position internationally. However, fully mechanized mining of thin coal seams remains a relatively weak link. The main objective reasons for this are the limited mining space, low efficiency, high labor intensity for workers, frequent safety accidents, and low economic benefits in thin coal seams, resulting in a large amount of thin coal seam resources remaining idle. The key reason lies in the lack of adaptable and highly efficient fully mechanized mining technology and equipment for thin coal seams.

[0003] Traditional rocker arm thin coal seam mining machines are large and complex in structure, while the new contour thin coal seam mining machine has a simple structure and high cutting power, making it an ideal thin coal seam mining machine. However, its cutting height is fixed, and its adaptability needs to be improved; at the same time, it is difficult to adjust the height when cutting along the working face (strike) and perpendicular to the working face (dip), and it cannot adapt to the undulations of the working face. Summary of the Invention

[0004] This invention provides a contour-type thin coal seam mining machine, which can adjust the overall cutting height and also adjust the cutting height when cutting along the working face (strike) and perpendicular to the working face (dip).

[0005] The aforementioned adjustable-height thin coal seam mining machine includes a coal wall side slipper assembly I, a coal wall side slipper assembly II, a goaf side slipper assembly I, a goaf side slipper assembly II, a mining machine body, a height adjustment cylinder, a filling cylinder, and a cutting drum. Both coal wall side slipper assembly I and coal wall side slipper assembly II include a coal wall side connecting rod, a coal wall side machine body connecting pin, a coal wall side cylinder connecting pin, an eccentric mechanism, and a coal wall side slipper plate. The coal wall side machine body connecting pin and the coal wall side cylinder connecting pin pass through the coal wall side connecting rod. The eccentric mechanism includes an eccentric pin shaft and an eccentric pin shaft sleeve. An eccentric pin shaft sleeve hole is provided on the coal wall side connecting rod. An eccentric pin shaft hole is provided on the coal wall side slipper plate. The eccentric pin shaft passes through the eccentric pin shaft sleeve hole and the eccentric pin shaft hole to connect the coal wall side connecting rod and the coal wall side slipper. The plate, with its end located within the eccentric pin sleeve hole, is eccentrically fixed to the eccentric pin sleeve, which is also fixed within the eccentric pin sleeve hole. Both the goaf-side sliding shoe assembly I and goaf-side sliding shoe assembly II include a goaf-side connecting rod, a pin, a goaf-side sliding shoe plate, and a goaf-side machine body connecting pin. Goaf-side sliding shoe assembly I also includes a goaf-side hydraulic cylinder connecting pin. Pin holes are provided on both the goaf-side connecting rod and the goaf-side sliding shoe plate, and the pin passes through these pin holes to connect the goaf-side connecting rod and the goaf-side sliding shoe plate. In goaf-side sliding shoe assembly I, the goaf-side machine body connecting pin and the goaf-side hydraulic cylinder connecting pin pass through the goaf-side connecting rod, respectively. In goaf-side sliding shoe assembly II, the goaf-side machine body connecting pin passes through the goaf-side connecting rod. Coal wall-side sliding shoe mounting positions I and II, facing the coal wall side, are respectively provided at the four corners below the coal mining machine body. The sliding shoe mounting position II, as well as the goaf-side sliding shoe mounting positions I and II facing the goaf side, are located on the same side of the coal mining machine body centerline. The coal wall side sliding shoe mounting position I and the goaf-side sliding shoe mounting position I are located on the same side of the coal mining machine body centerline. The coal wall side sliding shoe mounting position II and the goaf-side sliding shoe mounting position II are also located on the same side of the coal mining machine body centerline. The coal wall side sliding shoe assembly I is hinged to the coal wall side sliding shoe mounting position I via a coal wall side machine body connecting pin, and hinged to the first end of the height adjustment cylinder via a coal wall side cylinder connecting pin. The second end of the height adjustment cylinder is hinged to the coal wall side sliding shoe mounting position I. The coal wall side sliding shoe assembly II is hinged to the coal wall side machine body connecting pin, and hinged to the first end of the filling cylinder via a coal wall side cylinder connecting pin. The second end of the filling cylinder is hinged to the coal wall side sliding shoe mounting position II. Hinged; the goaf-side sliding shoe assembly I is hinged to the goaf-side sliding shoe mounting position I via the goaf-side machine body connecting pin, and is hinged to the first end of the height adjustment cylinder via the goaf-side cylinder connecting pin, and the second end of the height adjustment cylinder is hinged to the goaf-side sliding shoe mounting position I; the goaf-side machine body connecting pin of the goaf-side sliding shoe assembly II is connected to the goaf-side sliding shoe mounting position II, and the goaf-side connecting rod is fixed on the goaf-side sliding shoe mounting position II; the filling cylinder is a telescopic cylinder or a non-telescopic cylinder. When the filling cylinder is a non-telescopic cylinder, the height difference between the coal wall side sliding shoe plate in the coal wall side sliding shoe assembly II and the goaf-side sliding shoe plate in the goaf-side sliding shoe assembly II is the height difference between the two sides of the scraper conveyor chute; the two cutting rollers are installed on the side of the coal mining machine body facing the coal wall, symmetrically arranged on both sides of the centerline of the coal mining machine body.

[0006] Furthermore, the coal face side connecting rod, the goaf side connecting rod, and the cutting drum are supporting components, and multiple sets are provided for replacement;

[0007] The parameters of the supporting components already installed on the coal mining machine body are as follows: the vertical distance between the coal wall side connecting pin and the eccentric pin sleeve hole on the coal wall side connecting rod is h; the vertical distance between the goaf side connecting pin and the pin hole on the goaf side connecting rod is h; and the diameter of the cutting drum is d.

[0008] The parameters of the components to be replaced are: the vertical distance between the coal wall side connecting pin and the eccentric pin bushing hole on the coal wall side connecting rod is H; the vertical distance between the goaf side connecting pin and the pin hole on the goaf side connecting rod is H; and the diameter of the cutting drum is D.

[0009] Hh = (Dd) / 2.

[0010] Furthermore, coal face side slipper assembly I and coal face side slipper assembly II are symmetrically arranged on both sides of the centerline of the coal mining machine body; goaf side slipper assembly I and goaf side slipper assembly II are symmetrically arranged on both sides of the centerline of the coal mining machine body.

[0011] Furthermore, in the coal wall side slipper assembly I and coal wall side slipper assembly II, the bottom surface of the coal wall side connecting rod and the top surface of the coal wall side slipper plate are provided with grooves; eccentric pin sleeve holes I and II are respectively provided on both sides of the groove of the coal wall side connecting rod; an eccentric pin hole is provided on one side of the groove of the coal wall side slipper plate; the groove of the coal wall side connecting rod and the groove of the coal wall side slipper plate are inserted into each other, with the eccentric pin sleeve hole I located inside the groove of the coal wall side slipper plate and the eccentric pin sleeve hole II located outside the groove of the coal wall side slipper plate; the eccentric pin sleeves I and II at both ends of the eccentric pin are respectively located in the eccentric pin sleeve holes I and II.

[0012] Furthermore, in the coal wall side slipper assembly I and the coal wall side slipper assembly II, the eccentric mechanism also includes an eccentric screw passing through the eccentric pin and the eccentric pin sleeve; the eccentric mechanism fixing plate groove is provided on the side of the eccentric pin sleeve II and the coal wall side connecting rod where the eccentric pin sleeve hole II is provided; the eccentric mechanism fixing plate is installed in the eccentric mechanism fixing plate groove by screws, pressing the eccentric pin sleeve II.

[0013] Furthermore, grooves are provided on the bottom surface of the goaf-side connecting rod and the top surface of the goaf-side sliding shoe plate; pin holes are provided on both sides of the groove of the goaf-side connecting rod and the groove of the goaf-side sliding shoe plate; the groove of the goaf-side connecting rod and the groove of the goaf-side sliding shoe plate are inserted into each other, and the pin passes through the pin hole to connect the goaf-side connecting rod and the goaf-side sliding shoe plate.

[0014] Furthermore, the goaf-side sliding shoe assembly I and the goaf-side sliding shoe assembly II also include a pin fixing plate; the pin fixing plate is fixed to the goaf-side connecting rod by screws to press the pin.

[0015] Furthermore, slots are provided on both the goaf side connecting rod of the goaf side slipper assembly II and the goaf side slipper mounting position II, and the goaf side connecting rod and the goaf side slipper mounting position II are fixed by the slots.

[0016] Furthermore, the height adjustment cylinder and the filling cylinder are embedded in the coal mining machine body and are supplied with oil by the coal mining machine body; the coal mining machine body is equipped with cylinder lugs for connecting with the height adjustment cylinder and the filling cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By replacing the connecting rods in the cutting drum and slipper assembly, the overall cutting height of the equal-height thin coal seam mining machine can be expanded / reduced, improving adaptability and expanding the scope of application, achieving maximum economic benefits with the fewest parts replacements;

[0019] 2. By combining different slipper components and hydraulic cylinders, the height adjustment of the equal-height thin coal seam mining machine during cutting along the working face (strike) and perpendicular to the working face (dip) in thin coal seam roadways is cleverly achieved to adapt to the undulations of the working face;

[0020] 3. The sliding shoe components and hydraulic cylinders on both sides of the coal mining machine can be adjusted according to the roadway cutting situation to improve adaptability. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a rear view of a contour-type thin coal seam mining machine.

[0023] Figure 2 for Figure 1 Axis view;

[0024] Figure 3 This is a top view of the coal mining machine body;

[0025] Figure 4 This is a front view of the coal face side slipper assembly;

[0026] Figure 5 for Figure 4 A cross-sectional view along the AA direction;

[0027] Figure 6 This is a schematic diagram of the eccentric mechanism;

[0028] Figure 7This is a front view of the goaf side slipper assembly I;

[0029] Figure 8 for Figure 7 Cross-sectional view along the BB direction;

[0030] Figure 9 This is a front view of the goaf side slipper assembly II;

[0031] Figure 10 for Figure 9 A cross-sectional view along the CC direction;

[0032] Figure 11 Two sets of coal wall side slipper assemblies with different vertical distances between the coal wall side body connecting pin and the eccentric pin bushing hole;

[0033] Figure 12 Two sets of goaf-side sliding shoe assemblies I with different vertical distances between the connecting pins and pin holes on the goaf side of the machine body;

[0034] Figure 13 Two sets of goaf-side sliding shoe assemblies II with different vertical distances between the connecting pins and pin holes on the goaf side of the machine body;

[0035] Figure 14 A schematic diagram showing the overall cutting height adjustment of a contour-type thin coal seam mining machine;

[0036] Figure 15 A schematic diagram showing the height adjustment of a contour-type thin coal seam mining machine along the working face;

[0037] Figure 16 A schematic diagram of an eccentric mechanism rotating 180°;

[0038] Figure 17 This is a schematic diagram showing the vertical working face height adjustment of a contour-type thin coal seam mining machine.

[0039] In the diagram: 1a-Coal wall side slipper assembly I; 1b-Coal wall side slipper assembly II; 1.1-Coal wall side connecting rod; 1.2-Coal wall side machine body connecting pin; 1.3-Coal wall side cylinder connecting pin; 1.4-Coal wall side slipper plate; 1.5-Eccentric pin; 1.6-Eccentric pin sleeve I; 1.7-Eccentric pin sleeve II; 1.8-Eccentric screw; 1.9-Eccentric mechanism fixing plate; 1.10-Screws for fixing the eccentric mechanism fixing plate;

[0040] 2a-Goaf side sliding shoe assembly I; 2b-Goaf side sliding shoe assembly II; 2.1-Goaf side connecting rod; 2.2-Pin; 2.3-Goaf side sliding shoe plate; 2.4-Goaf side machine body connecting pin; 2.5-Goaf side hydraulic cylinder connecting pin; 2.6-Pin fixing plate; 2.7-Slot;

[0041] 3-Coal mining machine body; 3.1-Coal wall side slipper installation position I; 3.2-Coal wall side slipper installation position II; 3.3-Goaf side slipper installation position I; 3.4-Goaf side slipper installation position II;

[0042] 4-Height adjustment cylinder; 5-Filling cylinder; 6-Cylinder lug; 7-Cylinder pin; 8-Cutting roller; 9-Scraper conveyor chute. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1

[0045] This embodiment improves a thin coal seam mining machine with adjustable cutting height, including coal wall side slipper assembly I1a, coal wall side slipper assembly II1b, goaf side slipper assembly I2a, goaf side slipper assembly II2b, mining machine body 3, height adjustment cylinder 4, filling cylinder 5, and cutting drum 8.

[0046] Both coal wall side slipper assembly I1a and coal wall side slipper assembly II1b include a coal wall side connecting rod 1.1, a coal wall side machine body connecting pin 1.2, a coal wall side cylinder connecting pin 1.3, an eccentric mechanism, and a coal wall side slipper plate 1.4. The coal wall side machine body connecting pin 1.2 and the coal wall side cylinder connecting pin 1.3 pass through the coal wall side connecting rod 1.1 respectively. The eccentric mechanism includes an eccentric pin shaft 1.5 and an eccentric pin shaft sleeve. An eccentric pin shaft sleeve hole is provided on the coal wall side connecting rod 1.1. An eccentric pin shaft hole is provided on the coal wall side slipper plate 1.4. The eccentric pin shaft 1.5 passes through the eccentric pin shaft sleeve hole and the eccentric pin shaft hole to connect the coal wall side connecting rod 1.1 and the coal wall side slipper plate 1.4. The end is located in the eccentric pin shaft sleeve hole and is eccentrically fixed to the eccentric pin shaft sleeve. The eccentric pin shaft sleeve is fixed in the eccentric pin shaft sleeve hole.

[0047] Both the goaf-side sliding shoe assembly I2a and the goaf-side sliding shoe assembly II2b include a goaf-side connecting rod 2.1, a pin 2.2, a goaf-side sliding shoe plate 2.3, and a goaf-side machine body connecting pin 2.4. The goaf-side sliding shoe assembly I2a also includes a goaf-side hydraulic cylinder connecting pin 2.5. Both the goaf-side connecting rod 2.1 and the goaf-side sliding shoe plate 2.3 are provided with pin holes, and the pin 2.2 passes through the pin holes to connect the goaf-side connecting rod 2.1 and the goaf-side sliding shoe plate 2.3. In the goaf-side sliding shoe assembly I2a, the goaf-side machine body connecting pin 2.4 and the goaf-side hydraulic cylinder connecting pin 2.5 pass through the goaf-side connecting rod 2.1, respectively. In the goaf-side sliding shoe assembly II2b, the goaf-side machine body connecting pin 2.4 passes through the goaf-side connecting rod.

[0048] At the four corners below the coal mining machine body 3, there are coal wall side slipper mounting positions I3.1 and II3.2 facing the coal wall side, and goaf side slipper mounting positions I3.3 and II3.4 facing the goaf side. Coal wall side slipper mounting positions I3.1 and II3.3 are located on the same side of the centerline of the coal mining machine body 3, and coal wall side slipper mounting positions II3.2 and II3.4 are located on the same side of the centerline of the coal mining machine body 3.

[0049] The coal wall side slipper assembly Ⅰ1a is hinged to the coal wall side slipper mounting position Ⅰ3.1 via the coal wall side body connecting pin 1.2, and is hinged to the first end of the height adjustment cylinder 4 via the coal wall side cylinder connecting pin 1.3. The second end of the height adjustment cylinder 4 is hinged to the coal wall side slipper mounting position Ⅰ3.1.

[0050] The coal wall side slipper assembly II1b is hinged to the coal wall side slipper mounting position II3.2 via the coal wall side body connecting pin 1.2, and is hinged to the first end of the filling cylinder 5 via the coal wall side cylinder connecting pin 1.3. The second end of the filling cylinder 5 is hinged to the coal wall side slipper mounting position II3.2.

[0051] The goaf-side sliding shoe assembly Ⅰ2a is hinged to the goaf-side sliding shoe mounting position Ⅰ3.3 via the goaf-side machine body connecting pin 2.4, and is hinged to the first end of the height adjustment cylinder 4 via the goaf-side cylinder connecting pin 2.5. The second end of the height adjustment cylinder 4 is hinged to the goaf-side sliding shoe mounting position Ⅰ3.3.

[0052] The goaf-side sliding shoe assembly Ⅱ2b has its goaf-side body connecting pin 2.4 connected to the goaf-side sliding shoe mounting position Ⅱ3.3, and the goaf-side connecting rod 2.1 is fixed on the goaf-side sliding shoe mounting position Ⅱ3.4.

[0053] like Figure 14 As shown, the filling cylinder 5 can be a telescopic cylinder or a non-telescopic cylinder. When the filling cylinder 5 is a non-telescopic cylinder, the height difference between the coal wall side slipper plate 1.4 in the coal wall side slipper assembly II1b and the goaf side slipper plate 2.3 in the goaf side slipper assembly II2b is the height difference Δh between the two sides of the scraper conveyor chute 9.

[0054] like Figure 3 As shown, the coal face side slipper installation position I3.1 and its installed coal face side slipper assembly I1a, and the goaf side slipper installation position I3.3 and its installed goaf side slipper assembly I2a can be located on side A of the coal mining machine body 3. Then, the coal face side slipper installation position II3.2 and its installed coal face side slipper assembly II1b, and the goaf side slipper installation position II3.4 and its installed goaf side slipper assembly II2b are located on side B of the coal mining machine body 3. They can also be interchanged depending on the roadway cutting situation.

[0055] Two cutting rollers 8 are installed on the side of the coal mining machine 3 facing the coal wall, symmetrically arranged on both sides of the centerline of the coal mining machine 3. The cutting rollers 8 are connected to the transmission device inside the coal mining machine 3 and can rotate with the transmission device. The two cutting rollers 8 rotate in opposite directions.

[0056] The coal face side connecting rod 1.1, the goaf side connecting rod 2.1, and the cutting drum 8 are a set of matching components. Multiple sets are provided for replacement to adjust the overall cutting height of the equal-height thin coal seam mining machine. In order to keep the cutting depth constant, the following restrictions need to be imposed:

[0057] The parameters of the supporting components installed on the coal mining machine body 3 are as follows: the vertical distance between the coal wall side connecting pin 1.2 and the eccentric pin sleeve hole on the coal wall side connecting rod 1.1 is h; the vertical distance between the goaf side connecting pin 2.4 and the pin hole on the goaf side connecting rod 2.1 is h; and the diameter of the cutting drum 8 is d.

[0058] The parameters of the components to be replaced are as follows: the vertical distance between the coal wall side connecting pin 1.2 and the eccentric pin sleeve hole on the coal wall side connecting rod 1.1 is H; the vertical distance between the goaf side connecting pin 2.4 and the pin hole on the goaf side connecting rod 2.1 is H; and the diameter of the cutting drum 8 is D.

[0059] The above parameters must satisfy Hh = (Dd) / 2.

[0060] Coal wall side slipper assembly I1a and coal wall side slipper assembly II1b are symmetrically arranged on both sides of the centerline of the coal mining machine body 3; goaf side slipper assembly I2a and goaf side slipper assembly II2b are symmetrically arranged on both sides of the centerline of the coal mining machine body 3.

[0061] The height adjustment cylinder 4 and the filling cylinder 5 are embedded in the coal mining machine body 3. The coal mining machine body 3 is provided with cylinder lugs 6 for connecting with the height adjustment cylinder 4 and the filling cylinder 5. The cylinder lugs 6 and the cylinders are connected by cylinder pins 7.

[0062] Example 2

[0063] This embodiment provides the specific connection method of the coal wall side connecting rod 1.1 and the coal wall side slipper plate 1.4, as well as the specific installation method of the eccentric mechanism.

[0064] In the coal wall side slipper assembly I1a and coal wall side slipper assembly II1b, the bottom surface of the coal wall side connecting rod 1.1 and the top surface of the coal wall side slipper plate 1.4 are provided with grooves; eccentric pin sleeve holes I and II are respectively provided on both sides of the groove of the coal wall side connecting rod 1.1; an eccentric pin hole is provided on one side of the groove of the coal wall side slipper plate 1.4; the groove of the coal wall side connecting rod 1.1 and the groove of the coal wall side slipper plate 1.4 are inserted into each other, with the eccentric pin sleeve hole I located inside the groove of the coal wall side slipper plate 1.4 and the eccentric pin sleeve hole II located outside the groove of the coal wall side slipper plate 1.4; the eccentric pin sleeves I1.6 and II1.7 at both ends of the eccentric pin 1.5 are respectively located in the eccentric pin sleeve holes I and II.

[0065] In the coal wall side slipper assembly I1a and coal wall side slipper assembly II1b, the eccentric mechanism also includes an eccentric screw 1.8 passing through the eccentric pin 1.5 and the eccentric pin sleeve; the eccentric mechanism fixing plate groove is provided on the side of the eccentric pin sleeve II and the coal wall side connecting rod 1.1 where the eccentric pin sleeve hole II is provided; the eccentric mechanism fixing plate 1.9 is installed in the eccentric mechanism fixing plate groove by screws 1.10, pressing the eccentric pin sleeve II 1.7 to fix the eccentric mechanism.

[0066] The end I of the eccentric pin 1.5 is a hexagonal prism. The eccentric pin sleeve I 1.6 is provided with a hexagonal hole. The eccentric pin sleeve I 1.6 is fitted on the end I to restrict circumferential rotation. The eccentric screw 1.8 passes through the eccentric pin sleeve II 1.7 and the eccentric pin 1.5 and is nailed into the eccentric pin sleeve I 1.6.

[0067] Example 3

[0068] This embodiment provides the specific connection method of the goaf side connecting rod 2.1 and the goaf side slipper plate 2.3, as well as the specific installation method of the goaf side slipper assembly II 2b.

[0069] Grooves are provided on the bottom surface of the goaf-side connecting rod 2.1 and the top surface of the goaf-side sliding shoe plate 2.3; pin holes are provided on both sides of the groove of the goaf-side connecting rod 2.1 and the groove of the goaf-side sliding shoe plate 2.3; the groove of the goaf-side connecting rod 2.1 and the groove of the goaf-side sliding shoe plate 2.3 are inserted into each other, and the pin shaft 2.2 passes through the pin hole to connect the goaf-side connecting rod 2.1 and the goaf-side sliding shoe plate 2.3.

[0070] The goaf-side sliding shoe assembly I2a and the goaf-side sliding shoe assembly II2b also include a pin fixing plate 2.6; the pin fixing plate 2.6 is fixed to the goaf-side connecting rod 2.1 by screws, pressing the pin 2.2.

[0071] The goaf-side sliding shoe assembly Ⅱ2b has slots 2.7 on both the goaf-side connecting rod 2.1 and the goaf-side sliding shoe mounting position Ⅱ3.4. The goaf-side connecting rod 2.1 and the goaf-side sliding shoe mounting position Ⅱ3.4 are fixed by the slots 2.7.

[0072] Example 4

[0073] This embodiment provides a height adjustment method for the above-mentioned adjustable-height thin coal seam mining machine along the working face. It is a unilateral height adjustment method. The coal wall side slipper plate 1.4 and the goaf side slipper plate 2.3 are both located on the scraper conveyor chute 9. Depending on the working face requirements, the coal wall side slipper mounting position I3.1 and its installed coal wall side slipper assembly I1a, and the goaf side slipper mounting position I3.3 and its installed goaf side slipper assembly I2a are located on side A or side B of the mining machine body 3. The method includes the following steps:

[0074] S1, when the filling cylinder 5 is a telescopic cylinder, the height adjustment cylinder 4 extends and retracts to adjust the coal wall side slipper assembly I1a and the goaf side slipper assembly I2a, and the filling cylinder 5 extends and retracts to adjust the coal wall side slipper assembly II1b, so that the two sets of coal wall side slipper plates 1.4 are at the same height, the two sets of goaf side slipper plates 2.3 are at the same height, and the coal mining machine body 3 is in a horizontal state. The filling cylinder 5 remains unchanged, and the side where the coal wall side slipper installation position II3.2 and the goaf side slipper installation position II3.4 are located is used as the reference side for adjusting the height of the coal mining machine body 3;

[0075] When the filling cylinder 5 is a non-retractable cylinder, the height adjustment cylinder 4 extends and retracts to adjust the coal wall side slipper assembly I1a and the goaf side slipper assembly I2a, so that the two sets of coal wall side slipper plates 1.4 are at the same height and the two sets of goaf side slipper plates 2.3 are at the same height. Since the height difference between the coal wall side slipper plate 1.4 in the coal wall side slipper assembly II1b and the goaf side slipper plate 2.3 in the goaf side slipper assembly II2b is the height difference between the two sides of the scraper conveyor chute 9, the coal mining machine body 3 is already in a horizontal state. The side where the coal wall side slipper installation position II3.2 and the goaf side slipper installation position II3.4 are located is used as the reference side for adjusting the height of the coal mining machine body 3.

[0076] S2, the height adjustment cylinders 4 corresponding to the coal wall side slipper assembly I1a and the goaf side slipper assembly I2a extend and retract. The height adjustment cylinder 4 can rotate slightly around the cylinder pin 7. The coal wall side connecting rod 1.1 and the coal wall side slipper plate 1.4 swing around the coal wall side machine body connecting pin 1.2. The goaf side connecting rod 2.1 and the goaf side slipper plate 2.3 swing around the goaf side machine body connecting pin 2.4, realizing the raising and lowering of the coal wall side slipper plate 1.4 and the goaf side slipper plate 2.3. The coal wall side slipper plate 1.4 rotates around the eccentric pin 1.5 and is always in contact with the scraper conveyor chute 9. The goaf side slipper plate 2.3 rotates around the pin 2.2 and is always in contact with the scraper conveyor chute 9, realizing the adjustment of the height of the side where the coal wall side slipper installation position I3.1 and the goaf side slipper installation position I3.3 are located.

[0077] Example 5

[0078] This embodiment provides a height adjustment method for the vertical working face of the above-mentioned adjustable-height thin coal seam mining machine. This method involves unilateral height adjustment, with both the coal wall side slipper 1.4 and the goaf side slipper 2.3 located on the scraper conveyor chute 9. The method includes the following steps:

[0079] S1, when the filling cylinder 5 is a telescopic cylinder, the height adjustment cylinder 4 telescopically adjusts the coal wall side slipper assembly I1a and the goaf side slipper assembly I2a, and the filling cylinder 5 telescopically adjusts the coal wall side slipper assembly II1b, so that the two sets of coal wall side slipper plates 1.4 are at the same height, the two sets of goaf side slipper plates 2.3 are at the same height, and the coal mining machine body 3 is in a horizontal state, while the filling cylinder 5 remains unchanged;

[0080] When the filling cylinder 5 is a non-retractable cylinder, the height adjustment cylinder 4 extends and retracts to adjust the coal wall side slipper assembly I1a and the goaf side slipper assembly I2a, so that the two sets of coal wall side slipper plates 1.4 are at the same height and the two sets of goaf side slipper plates 2.3 are at the same height. Since the height difference between the coal wall side slipper plate 1.4 in the coal wall side slipper assembly II1b and the goaf side slipper plate 2.3 in the goaf side slipper assembly II2b is the height difference between the two sides of the scraper conveyor chute 9, the coal mining machine body 3 is already in a horizontal state. The side where the coal wall side slipper installation position II3.2 and the goaf side slipper installation position II3.4 are located is used as the reference side for adjusting the height of the coal mining machine body 3.

[0081] S2, remove the eccentric mechanism in the coal wall side slipper assembly I1a and coal wall side slipper assembly II1b, rotate 180° and reinstall the eccentric mechanism to achieve the height adjustment of the coal mining machine body 3 facing the coal wall side.

[0082] The specific process of step S2 is as follows: unscrew the screws 1.9 corresponding to the eccentric mechanism fixing plate 1.8, remove the eccentric mechanism fixing plate 1.8, remove the eccentric screws 1.8, remove the eccentric pin sleeve II 1.7, rotate the eccentric pin 1.5 and the eccentric pin sleeve I 1.6 by 180°, rotate the eccentric pin sleeve II 1.7 by 180° and fix it on the eccentric pin 1.5 by the eccentric screws 1.8, then install the eccentric mechanism fixing plate 1.8, and at the same time adjust the coal wall side slipper assembly I 1a and the coal wall side slipper assembly II 1b to realize the adjustment of the equal height thin coal seam mining machine perpendicular to the working face. The adjustment height is twice the eccentricity of the eccentric mechanism.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A contour-type thin coal seam mining machine with adjustable cutting height, characterized in that, It includes coal face side slipper assembly I, coal face side slipper assembly II, goaf side slipper assembly I, goaf side slipper assembly II, coal mining machine body, height adjustment cylinder, filling cylinder and cutting drum; Both the coal wall side slipper assembly I and the coal wall side slipper assembly II include a coal wall side connecting rod, a coal wall side machine body connecting pin, a coal wall side cylinder connecting pin, an eccentric mechanism, and a coal wall side slipper plate. The coal wall side body connecting pin and the coal wall side cylinder connecting pin respectively pass through the coal wall side connecting rod; The eccentric mechanism includes an eccentric pin and an eccentric pin sleeve; The coal wall side connecting rod is provided with an eccentric pin sleeve hole; The coal wall side slipper plate is provided with an eccentric pin hole; The eccentric pin passes through the eccentric pin sleeve hole and the eccentric pin hole to connect the coal wall side connecting rod and the coal wall side sliding shoe plate. The end is located in the eccentric pin sleeve hole and is eccentrically fixed to the eccentric pin sleeve. The eccentric pin sleeve is fixed in the eccentric pin sleeve hole. Both the gob-side sliding shoe assembly I and the gob-side sliding shoe assembly II include a gob-side connecting rod, a pin, a gob-side sliding shoe plate, and a gob-side machine body connecting pin. The gob-side sliding shoe assembly I also includes a gob-side hydraulic cylinder connecting pin. Both the goaf-side connecting rod and the goaf-side sliding shoe plate are provided with pin holes, and the pin shaft passes through the pin holes to connect the goaf-side connecting rod and the goaf-side sliding shoe plate. In the goaf-side sliding shoe assembly I, the goaf-side machine body connecting pin and the goaf-side hydraulic cylinder connecting pin respectively pass through the goaf-side connecting rod; In the goaf-side sliding shoe assembly II, the goaf-side body connecting pin passes through the goaf-side connecting rod; At the four corners below the coal mining machine body, there are coal wall side slipper mounting positions I and II facing the coal wall side, and goaf side slipper mounting positions I and II facing the goaf side. The coal wall side slipper mounting position I and the goaf side slipper mounting position I are located on the same side of the centerline of the coal mining machine body, and the coal wall side slipper mounting position II and the goaf side slipper mounting position II are located on the same side of the centerline of the coal mining machine body. The coal wall side slipper assembly I is hinged to the coal wall side slipper mounting position I via the coal wall side body connecting pin, and is hinged to the first end of the height adjustment cylinder via the coal wall side cylinder connecting pin. The second end of the height adjustment cylinder is hinged to the coal wall side slipper mounting position I. The coal wall side slipper assembly II is hinged to the coal wall side slipper mounting position II via the coal wall side body connecting pin, and is hinged to the first end of the filling cylinder via the coal wall side cylinder connecting pin. The second end of the filling cylinder is hinged to the coal wall side slipper mounting position II. The goaf-side sliding shoe assembly I is hinged to the goaf-side sliding shoe mounting position I via the goaf-side machine body connecting pin, and is hinged to the first end of the height adjustment cylinder via the goaf-side cylinder connecting pin, and the second end of the height adjustment cylinder is hinged to the goaf-side sliding shoe mounting position I. The goaf-side sliding shoe assembly II has its goaf-side body connecting pin connected to the goaf-side sliding shoe mounting position II, and the goaf-side connecting rod is fixed on the goaf-side sliding shoe mounting position II. The filling cylinder can be a telescopic cylinder or a non-telescopic cylinder. When the filling cylinder is a non-telescopic cylinder, the height difference between the coal wall side slipper plate in the coal wall side slipper assembly II and the goaf side slipper plate in the goaf side slipper assembly II is the height difference between the two sides of the scraper conveyor chute. Two cutting rollers are installed on the side of the coal mining machine body facing the coal wall, symmetrically arranged on both sides of the centerline of the coal mining machine body.

2. The adjustable-height thin coal seam mining machine according to claim 1, characterized in that, The coal face side connecting rod, the goaf side connecting rod, and the cutting drum are a set of matching components, and multiple sets are provided for replacement. The parameters of the components already installed on the coal mining machine body are as follows: The vertical distance between the connecting pin on the coal wall side of the connecting rod and the eccentric pin bushing hole is h; the vertical distance between the connecting pin on the goaf side of the connecting rod and the pin hole is h; and the diameter of the cutting drum is d. The parameters of the components to be replaced are: The vertical distance between the connecting pin on the coal wall side of the connecting rod and the eccentric pin bushing hole is H; the vertical distance between the connecting pin on the goaf side of the connecting rod and the pin hole is H; and the diameter of the cutting drum is D. Hh = (Dd) / 2.

3. The adjustable-height thin coal seam mining machine according to claim 2, characterized in that, The coal wall side slipper assembly I and the coal wall side slipper assembly II are symmetrically arranged on both sides of the centerline of the coal mining machine body; The goaf side slipper assembly I and the goaf side slipper assembly II are symmetrically arranged on both sides of the centerline of the coal mining machine.

4. The adjustable-height thin coal seam mining machine according to claim 3, characterized in that, In coal wall side slipper assembly I and coal wall side slipper assembly II, grooves are provided on the bottom surface of the coal wall side connecting rod and the top surface of the coal wall side slipper plate; The groove of the coal wall side connecting rod is provided with eccentric pin sleeve hole I and eccentric pin sleeve hole II on both sides; The groove of the coal wall side slip shoe plate is provided with an eccentric pin hole on one side; The groove of the coal wall side connecting rod and the groove of the coal wall side sliding shoe plate are inserted into each other. The eccentric pin sleeve hole I is located in the groove of the coal wall side sliding shoe plate, and the eccentric pin sleeve hole II is located outside the groove of the coal wall side sliding shoe plate. The eccentric pin sleeves I and II at both ends of the eccentric pin are located in the eccentric pin sleeve hole I and the eccentric pin sleeve hole II, respectively.

5. The adjustable-height thin coal seam mining machine according to claim 4, characterized in that, In the coal wall side slipper assembly I and the coal wall side slipper assembly II, the eccentric mechanism also includes an eccentric screw that passes through the eccentric pin and the eccentric pin sleeve; The eccentric mechanism fixing plate groove is provided on the side of the eccentric pin sleeve II and the coal wall side connecting rod where the eccentric pin sleeve hole II is provided. The eccentric mechanism fixing plate is installed in the groove of the eccentric mechanism fixing plate by screws, and the eccentric pin sleeve II is pressed tightly.

6. The adjustable-height thin coal seam mining machine according to claim 5, characterized in that, Grooves are provided on the bottom surface of the goaf-side connecting rod and the top surface of the goaf-side sliding shoe plate; Pin holes are provided on both sides of the groove of the goaf-side connecting rod and on both sides of the groove of the goaf-side sliding shoe plate; The grooves of the goaf-side connecting rod and the goaf-side sliding shoe plate are inserted into each other, and the pin passes through the pin hole to connect the goaf-side connecting rod and the goaf-side sliding shoe plate.

7. The adjustable-height thin coal seam mining machine according to claim 6, characterized in that, Goaf side slipper assembly I and goaf side slipper assembly II also include a pin fixing plate; The pin fixing plate is fixed to the goaf-side connecting rod with screws to press the pin.

8. The adjustable-height thin coal seam mining machine according to claim 7, characterized in that, The goaf-side sliding shoe assembly II has slots on both the goaf-side connecting rod and the goaf-side sliding shoe mounting position II. The goaf-side connecting rod and the goaf-side sliding shoe mounting position II are fixed by the slots.

9. The adjustable-height thin coal seam mining machine according to any one of claims 1-8, characterized in that, The lifting cylinder and filling cylinder are embedded in the coal mining machine body and are supplied with oil by the coal mining machine body; The coal mining machine body is equipped with cylinder lugs for connecting to the height adjustment cylinder and the filling cylinder.

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