A height adjusting device and method for a thin seam coal mining machine
By designing a height adjustment device for thin coal seam mining machines, and utilizing a combination of slipper components and hydraulic cylinders, the height of the mining machine in thin coal seam roadways was adjusted, solving the problem of difficult height adjustment in existing technologies and improving the adaptability and safety of the mining machine.
Patent Information
- Application Number
- CN202310789077.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2043-06-30
AI Technical Summary
Existing thin coal seam mining machines are unable to adapt to the undulations of the working face and are difficult to adjust in height, resulting in low efficiency and numerous safety hazards.
Design a height adjustment device for a thin coal seam mining machine. By combining a coal wall side slipper assembly and a goaf side slipper assembly with a height adjustment cylinder and a filling cylinder, the height of the mining machine can be adjusted along the working face and vertically to adapt to the undulation of the working face.
It enables height adjustment of the thin coal seam mining machine when cutting along the working face and perpendicular to the working face in thin coal seam roadways, improving adaptability and safety, and reducing the labor intensity of workers.
Smart Images
Figure CN116856927B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of coal mining equipment, and specifically discloses a height adjusting device and height adjusting method for a thin seam coal mining machine. BACKGROUND
[0002] China is an important coal-producing base in the world, and has made a major breakthrough in fully mechanized mining and fully mechanized caving mining of thick coal seams, and is in the international leading position. However, the fully mechanized mining of thin coal seams is a relatively weak link. The main objective reason is that the thin coal seam mining space is small, the efficiency is low, the labor intensity of workers is large, the safety accidents are many, and the economic benefits are low, which causes a large amount of thin coal seam coal resources to be in a state of shelving. The key reason lies in the lack of thin coal seam fully mechanized mining technical equipment with good adaptability and high production efficiency.
[0003] The traditional rocker arm type thin seam coal mining machine has a large size and a complex structure, and the new type of isometric thin seam coal mining machine has a simple structure and strong cutting power, and is an ideal thin seam coal mining machine. However, the height of the isometric thin seam coal mining machine is difficult to adjust, and therefore it is difficult to adapt to the undulation of the working face. SUMMARY
[0004] The present application provides a height adjusting device and height adjusting method for a thin seam coal mining machine, which realizes height adjustment of the isometric thin seam coal mining machine when cutting along the working face (trend) and perpendicular to the working face (dip), so as to adapt to the undulation of the working face.
[0005] The height adjusting device of the thin seam coal mining machine comprises a coal wall side shoe assembly I, a coal wall side shoe assembly II, a goaf side shoe assembly I, a goaf side shoe assembly II, a coal mining machine body, an adjusting oil cylinder and a filling oil cylinder; the coal wall side shoe assembly I and the coal wall side shoe assembly II each comprise a coal wall side connecting rod, a coal wall side body connecting pin, a coal wall side oil cylinder connecting pin, an eccentric mechanism and a coal wall side shoe plate; the coal wall side body connecting pin and the coal wall side oil cylinder connecting pin pass through the coal wall side connecting rod respectively; the eccentric mechanism comprises an eccentric pin shaft and an eccentric pin shaft sleeve; the coal wall side connecting rod is provided with an eccentric pin shaft sleeve hole; the coal wall side shoe plate is provided with an eccentric pin shaft hole; 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 shoe plate, the end part is eccentrically fixed with the eccentric pin shaft sleeve in the eccentric pin shaft sleeve hole, and the eccentric pin shaft sleeve is fixed in the eccentric pin shaft sleeve hole; the goaf side shoe assembly I and the goaf side shoe assembly II each comprise a goaf side connecting rod, a pin shaft and a goaf side shoe plate, and the goaf side shoe assembly I further comprises a goaf side body connecting pin and a goaf side oil cylinder connecting pin; the goaf side connecting rod and the goaf side shoe plate are each provided with a pin hole, and the pin shaft passes through the pin holes to connect the goaf side connecting rod and the goaf side shoe plate; in the goaf side shoe assembly I, the goaf side body connecting pin and the goaf side oil cylinder connecting pin pass through the goaf side connecting rod respectively; four corners below the coal mining machine body are respectively provided with a coal wall side shoe mounting position I and a coal wall side shoe mounting position II facing the coal wall side and a goaf side shoe mounting position I and a goaf side shoe mounting position II facing the goaf side, the coal wall side shoe mounting position I and the goaf side shoe mounting position I are located on the same side of the center line of the coal mining machine body, and the coal wall side shoe mounting position II and the goaf side shoe mounting position II are located on the same side of the center line of the coal mining machine body; the coal wall side shoe assembly I is hinged with the coal wall side shoe mounting position I through the coal wall side body connecting pin, hinged with the first end of the adjusting oil cylinder through the coal wall side oil cylinder connecting pin, and hinged with the coal wall side shoe mounting position I through the second end of the adjusting oil cylinder; the coal wall side shoe assembly II is hinged with the coal wall side shoe mounting position II through the coal wall side body connecting pin, hinged with the first end of the filling oil cylinder through the coal wall side oil cylinder connecting pin, and hinged with the coal wall side shoe mounting position II through the second end of the filling oil cylinder; the goaf side shoe assembly I is hinged with the goaf side shoe mounting position I through the goaf side body connecting pin, hinged with the first end of the adjusting oil cylinder through the goaf side oil cylinder connecting pin, and hinged with the goaf side shoe mounting position I through the second end of the adjusting oil cylinder; the goaf side connecting rod of the goaf side shoe assembly II is fixed on the goaf side shoe mounting position II; the filling oil cylinder is a telescopic oil cylinder or a non-telescopic oil cylinder, when the filling oil cylinder is a non-telescopic oil cylinder, the height difference between the coal wall side shoe plate in the coal wall side shoe assembly II and the goaf side shoe plate in the goaf side shoe assembly II is the height difference between the two sides of the scraper conveyor chute.
[0006] Further, the coal wall side shoe assembly I and the coal wall side shoe assembly II are symmetrically arranged on the two sides of the center line of the coal mining machine body; the goaf side shoe assembly I and the goaf side shoe assembly II are symmetrically arranged on the two sides of the center line of the coal mining machine body.
[0007] Further, in the coal wall side sliding shoe assembly I and the coal wall side sliding shoe assembly II, the bottom surface of the coal wall side connecting rod and the top surface of the coal wall side sliding shoe plate are provided with grooves; the two sides of the groove of the coal wall side connecting rod are respectively provided with eccentric pin shaft sleeve holes I and eccentric pin shaft sleeve holes II; the groove of the coal wall side sliding shoe plate is provided with an eccentric pin shaft 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, the eccentric pin shaft sleeve hole I is located in the groove of the coal wall side sliding shoe plate, and the eccentric pin shaft sleeve hole II is located outside the groove of the coal wall side sliding shoe plate; the eccentric pin shaft sleeves I and II at both ends of the eccentric pin shaft are respectively located in the eccentric pin shaft sleeve holes I and II.
[0008] Further, in the coal wall side sliding shoe assembly I and the coal wall side sliding shoe assembly II, the eccentric mechanism further comprises an eccentric screw penetrating through the eccentric pin shaft and the eccentric pin shaft sleeve; the side surface of the eccentric pin shaft sleeve II and the coal wall side connecting rod provided with the eccentric pin shaft sleeve hole II are both provided with eccentric mechanism fixing plate grooves; the eccentric mechanism fixing plate grooves are provided with eccentric mechanism fixing plates through screws, and the eccentric pin shaft sleeve II is pressed.
[0009] Further, the bottom surface of the goaf side connecting rod and the top surface of the goaf side sliding shoe plate are provided with grooves; the two sides of the groove of the goaf side connecting rod and the two sides of the groove of the goaf side sliding shoe plate are both provided with pin holes; the groove of the goaf side connecting rod and the groove of the goaf side sliding shoe plate are inserted, and the pin shaft connects the goaf side connecting rod and the goaf side sliding shoe plate by penetrating through the pin holes.
[0010] Further, the goaf side sliding shoe assembly I and the goaf side sliding shoe assembly II further comprise a pin shaft fixing plate; the pin shaft fixing plate is fixed on the goaf side connecting rod through screws, and the pin shaft is pressed.
[0011] Further, the goaf side sliding shoe assembly II further comprises a goaf side machine body connecting pin; the goaf side machine body connecting pin of the goaf side sliding shoe assembly II is connected with the goaf side sliding shoe mounting position II through the goaf side connecting rod, and the goaf side connecting rod and the goaf side sliding shoe mounting position II are both provided with clamping grooves, and the goaf side connecting rod and the goaf side sliding shoe mounting position II are fixed through clamping grooves.
[0012] Further, the height adjusting oil cylinder and the filling oil cylinder are embedded in the shearer machine body, and oil is supplied by the shearer machine body; the shearer machine body is provided with an oil cylinder ear sleeve for connecting with the height adjusting oil cylinder and the filling oil cylinder.
[0013] The application also provides a height adjusting method of a thin seam shearer along a working face, which is unilateral height adjustment, and the coal wall side sliding shoe plate and the goaf side sliding shoe plate in the thin seam shearer height adjusting device are located on the scraper machine chute, and the method comprises the following steps:
[0014] S1, when the filling cylinder is a telescopic cylinder, the height-adjusting cylinder is telescoped to adjust the coal wall side shoe assembly I and the goaf side shoe assembly I, the filling cylinder is telescoped to adjust the coal wall side shoe assembly II, so that the two sets of coal wall side shoe plates are at the same height, the two sets of goaf side shoe plates are at the same height and the machine body is in a horizontal state, the filling cylinder remains unchanged, the side where the coal wall side shoe installation position II and the goaf side shoe installation position II are located is taken as the reference side for height adjustment of the machine body;
[0015] When the filling cylinder is a non-telescopic cylinder, the height-adjusting cylinder is telescoped to adjust the coal wall side shoe assembly I and the goaf side shoe assembly I, so that the two sets of coal wall side shoe plates are at the same height and the two sets of goaf side shoe plates are at the same height, and since the height difference between the coal wall side shoe plate in the coal wall side shoe assembly II and the goaf side shoe plate in the goaf side shoe assembly II is the height difference between the two sides of the scraper conveyor, at this time the machine body is already in a horizontal state, and the side where the coal wall side shoe installation position II and the goaf side shoe installation position II are located is taken as the reference side for height adjustment of the machine body.
[0016] S2, the height-adjusting cylinder corresponding to the coal wall side shoe assembly I and the goaf side shoe assembly I is telescoped, the coal wall side connecting rod and the coal wall side shoe plate swing around the coal wall side machine body connecting pin, the goaf side connecting rod and the goaf side shoe plate swing around the goaf side machine body connecting pin, the coal wall side shoe plate and the goaf side shoe plate are lifted, the coal wall side shoe plate rotates around the eccentric pin shaft and is always in contact with the scraper conveyor, the goaf side shoe plate rotates around the pin shaft and is always in contact with the scraper conveyor, and the height of the side where the coal wall side shoe installation position I and the goaf side shoe installation position I are located is adjusted.
[0017] The application also provides a height adjustment method for a thin seam coal mining machine vertical working face, which is one-side height adjustment, and the coal wall side shoe plate and the goaf side shoe plate in the thin seam coal mining machine height adjustment device are located on the scraper conveyor, and the method comprises the following steps:
[0018] S1, when the filling cylinder is a telescopic cylinder, the height-adjusting cylinder is telescoped to adjust the coal wall side shoe assembly I and the goaf side shoe assembly I, the filling cylinder is telescoped to adjust the coal wall side shoe assembly II, so that the two sets of coal wall side shoe plates are at the same height, the two sets of goaf side shoe plates are at the same height and the machine body is in a horizontal state, and the filling cylinder remains unchanged.
[0019] When the filling cylinder is a non-telescopic cylinder, the height-adjusting cylinder is telescoped to adjust the coal wall side shoe assembly I and the goaf side shoe assembly I, so that the two sets of coal wall side shoe plates are at the same height and the two sets of goaf side shoe plates are at the same height, and since the height difference between the coal wall side shoe plate in the coal wall side shoe assembly II and the goaf side shoe plate in the goaf side shoe assembly II is the height difference between the two sides of the scraper conveyor, at this time the machine body is already in a horizontal state, and the side where the coal wall side shoe installation position II and the goaf side shoe installation position II are located is taken as the reference side for height adjustment of the machine body.
[0020] S2, remove the eccentric mechanism in the coal wall side shoe assembly I and coal wall side shoe assembly II, rotate 180° and reinstall the eccentric mechanism, realize the height adjustment of the coal mining machine body facing the coal wall side.
[0021] Compared with the prior art, the present application has the following beneficial effects:
[0022] 1. By the combination use of different shoe assemblies and oil cylinders, the height adjustment of the equal-height thin seam coal mining machine in the thin seam roadway along the working face (strike) and perpendicular to the working face (dip) is realized, so as to adapt to the working face undulation.
[0023] 2. The adaptability of the shoe assemblies and oil cylinders on both sides of the coal mining machine body can be improved according to the roadway cutting condition. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical scheme in the specific embodiments or prior art of the present application, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0025] Figure 1 It is a rear view of the height adjustment device of the thin seam coal mining machine;
[0026] Figure 2 It is a front view of the coal wall side shoe assembly; Figure 1
[0027] Figure 3 It is a top view of the coal mining machine body;
[0028] Figure 4 It is a front view of the coal wall side shoe assembly;
[0029] Figure 5 It is a sectional view in A-A direction of Figure 4
[0030] Figure 6 It is a structural schematic view of the eccentric mechanism;
[0031] Figure 7 It is a front view of the goaf side shoe assembly I;
[0032] Figure 8 It is a sectional view in B-B direction of Figure 7
[0033] Figure 9 It is a front view of the goaf side shoe assembly II;
[0034] Figure 10 It is a sectional view in B-B direction of Figure 9 A sectional view along the C-C direction;
[0035] Figure 11 A schematic diagram of the thin coal seam shearer along the working face height adjustment;
[0036] Figure 12 A schematic diagram of the eccentric mechanism rotating 180°;
[0037] Figure 13 A schematic diagram of the thin coal seam shearer vertical working face height adjustment.
[0038] In the figure: 1a - coal wall side shoe assembly I; 1b - coal wall side shoe assembly II; 1.1 - coal wall side connecting rod; 1.2 - coal wall side body connecting pin; 1.3 - coal wall side oil cylinder connecting pin; 1.4 - coal wall side shoe plate; 1.5 - eccentric pin shaft; 1.6 - eccentric pin shaft sleeve I; 1.7 - eccentric pin shaft sleeve II; 1.8 - eccentric screw; 1.9 - eccentric mechanism fixing plate; 1.10 - screw for fixing the eccentric mechanism fixing plate;
[0039] 2a - goaf side shoe assembly I; 2b - goaf side shoe assembly II; 2.1 - goaf side connecting rod; 2.2 - pin shaft; 2.3 - goaf side shoe plate; 2.4 - goaf side body connecting pin; 2.5 - goaf side oil cylinder connecting pin; 2.6 - pin shaft fixing plate; 2.7 - clamping groove;
[0040] 3 - shearer body; 3.1 - coal wall side shoe mounting position I; 3.2 - coal wall side shoe mounting position II; 3.3 - goaf side shoe mounting position I; 3.4 - goaf side shoe mounting position II;
[0041] 4 - height adjustment oil cylinder; 5 - filling oil cylinder; 6 - oil cylinder ear sleeve; 7 - oil cylinder pin shaft; 8 - scraper conveyor chute. DETAILED DESCRIPTION
[0042] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0043] Example 1
[0044] This embodiment improves a thin coal seam shearer height adjustment device, which comprises coal wall side shoe assembly I 1a, coal wall side shoe assembly II 1b, goaf side shoe assembly I 2a, goaf side shoe assembly II 2b, shearer body 3, height adjustment oil cylinder 4 and filling oil cylinder 5.
[0045] The coal wall side sliding shoe assembly I 1a and the coal wall side sliding shoe assembly II 1b both include a coal wall side connecting rod 1.1, a coal wall side body connecting pin 1.2, a coal wall side oil cylinder connecting pin 1.3, an eccentric mechanism and a coal wall side sliding shoe plate 1.4; the coal wall side body connecting pin 1.2 and the coal wall side oil 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; the coal wall side connecting rod 1.1 is provided with an eccentric pin shaft sleeve hole; the coal wall side sliding shoe plate 1.4 is provided with an eccentric pin shaft hole; 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 sliding shoe plate 1.4, and the end part is eccentrically fixed with the eccentric pin shaft sleeve in the eccentric pin shaft sleeve hole, and the eccentric pin shaft sleeve is fixed in the eccentric pin shaft sleeve hole.
[0046] The goaf side sliding shoe assembly I 2a and the goaf side sliding shoe assembly II 2b both include a goaf side connecting rod 2.1, a pin shaft 2.2 and a goaf side sliding shoe plate 2.3, and the goaf side sliding shoe assembly I 2a further includes a goaf side body connecting pin 2.4 and a goaf side oil cylinder connecting pin 2.5; the goaf side connecting rod 2.1 and the goaf side sliding shoe plate 2.3 are both provided with pin holes, and the pin shaft 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 I 2a, the goaf side body connecting pin 2.4 and the goaf side oil cylinder connecting pin 2.5 pass through the goaf side connecting rod 2.1 respectively.
[0047] Four corners below the shearer body 3 are respectively provided with a coal wall side sliding shoe mounting position I 3.1 and a coal wall side sliding shoe mounting position II 3.2 facing the coal wall side, and a goaf side sliding shoe mounting position I 3.3 and a goaf side sliding shoe mounting position II 3.4 facing the goaf side, the coal wall side sliding shoe mounting position I 3.1 and the goaf side sliding shoe mounting position I 3.3 are located on the same side of the shearer body 3 center line, and the coal wall side sliding shoe mounting position II 3.2 and the goaf side sliding shoe mounting position II 3.4 are located on the same side of the shearer body 3 center line.
[0048] The coal wall side sliding shoe assembly I 1a is hinged with the coal wall side sliding shoe mounting position I 3.1 through the coal wall side body connecting pin 1.2, and is hinged with the first end of the height adjusting oil cylinder 4 through the coal wall side oil cylinder connecting pin 1.3, and the second end of the height adjusting oil cylinder 4 is hinged with the coal wall side sliding shoe mounting position I 3.1.
[0049] The coal wall side sliding shoe assembly II 1b is hinged with the coal wall side sliding shoe mounting position II 3.2 through the coal wall side body connecting pin 1.2, and is hinged with the first end of the filling oil cylinder 5 through the coal wall side oil cylinder connecting pin 1.3, and the second end of the filling oil cylinder 5 is hinged with the coal wall side sliding shoe mounting position II 3.2.
[0050] The goaf side sliding shoe assembly I 2a is hinged with the goaf side sliding shoe mounting position I 3.3 through the goaf side body connecting pin 2.4, and is hinged with the first end of the height adjusting oil cylinder 4 through the goaf side oil cylinder connecting pin 2.5, and the second end of the height adjusting oil cylinder 4 is hinged with the goaf side sliding shoe mounting position I 3.3.
[0051] The goaf side link 2.1 of the goaf side shoe assembly II 2b is fixed on the goaf side shoe mounting position II 3.4.
[0052] As shown in Figure 11 , the filling oil cylinder 5 is a telescopic oil cylinder or a non-telescopic oil cylinder. When the filling oil cylinder 5 is a non-telescopic oil cylinder, the height difference between the coal wall side shoe plate 1.4 in the coal wall side shoe assembly II 1b and the goaf side shoe plate 2.3 in the goaf side shoe assembly II 2b is the height difference Δh of the two sides of the scraper conveyor 8.
[0053] As shown in Figure 3 , the coal wall side shoe mounting position I 3.1 and the coal wall side shoe assembly I 1a mounted thereon and the goaf side shoe mounting position I 3.3 and the goaf side shoe assembly I 2a mounted thereon can be located at the A side of the shearer body 3, and then the coal wall side shoe mounting position II 3.2 and the coal wall side shoe assembly II 1b mounted thereon and the goaf side shoe mounting position II 3.4 and the goaf side shoe assembly II 2b mounted thereon are located at the B side of the shearer body 3. Alternatively, they can be transposed according to the cutting condition of the roadway.
[0054] The coal wall side shoe assembly I 1a and the coal wall side shoe assembly II 1b are symmetrically arranged on both sides of the center line of the shearer body 3; and the goaf side shoe assembly I 2a and the goaf side shoe assembly II 2b are symmetrically arranged on both sides of the center line of the shearer body 3.
[0055] The height adjusting oil cylinder 4 and the filling oil cylinder 5 are embedded in the shearer body 3, and the shearer body 3 is provided with an oil cylinder lug 6 for connecting with the height adjusting oil cylinder 4 and the filling oil cylinder 5. The connecting hole of the oil cylinder lug 6 and the oil cylinder is connected through an oil cylinder pin shaft 7.
[0056] Embodiment 2
[0057] This embodiment provides a specific connection mode of the coal wall side link 1.1 and the coal wall side shoe plate 1.4 and a specific installation mode of the eccentric mechanism.
[0058] In the coal wall side shoe assembly I 1a and the coal wall side shoe assembly II 1b, the bottom surface of the coal wall side link 1.1 and the top surface of the coal wall side shoe plate 1.4 are provided with grooves; the two sides of the groove of the coal wall side link 1.1 are respectively provided with an eccentric pin shaft sleeve hole I and an eccentric pin shaft sleeve hole II; the groove of the coal wall side shoe plate 1.4 is provided with an eccentric pin shaft hole on one side; the groove of the coal wall side link 1.1 and the groove of the coal wall side shoe plate 1.4 are inserted, the eccentric pin shaft sleeve hole I is located in the groove of the coal wall side shoe plate 1.4, and the eccentric pin shaft sleeve hole II is located outside the groove of the coal wall side shoe plate 1.4; the eccentric pin shaft sleeve I 1.6 and the eccentric pin shaft sleeve II 1.7 at both ends of the eccentric pin shaft 1.5 are respectively located in the eccentric pin shaft sleeve hole I and the eccentric pin shaft sleeve hole II.
[0059] The eccentric mechanism further comprises an eccentric screw 1.8 passing through the eccentric pin shaft 1.5 and the eccentric pin shaft sleeve; the side surface of the eccentric pin shaft sleeve II and the side surface of the coal wall side connecting rod 1.1, on which the eccentric pin shaft sleeve hole II is arranged, are provided with eccentric mechanism fixing plate grooves; the eccentric mechanism fixing plate 1.9 is installed in the eccentric mechanism fixing plate groove through the screw 1.10, and the eccentric pin shaft sleeve II 1.7 is pressed to fix the eccentric mechanism.
[0060] The end I of the eccentric pin shaft 1.5 is a hexagonal prism, the eccentric pin shaft sleeve I 1.6 is provided with a hexagonal hole, the eccentric pin shaft sleeve I 1.6 is sleeved on the end I to limit the circumferential rotation, and the eccentric screw 1.8 is screwed into the eccentric pin shaft sleeve I 1.6 through the eccentric pin shaft sleeve II 1.7 and the eccentric pin shaft 1.5.
[0061] Embodiment 3
[0062] The embodiment provides a specific connection mode of the goaf side connecting rod 2.1 and the goaf side sliding shoe plate 2.3 and a specific installation mode of the goaf side sliding shoe assembly II 2b.
[0063] The bottom surface of the goaf side connecting rod 2.1 and the top surface of the goaf side sliding shoe plate 2.3 are provided with grooves; the two sides of the groove of the goaf side connecting rod 2.1 and the two sides of the groove of the goaf side sliding shoe plate 2.3 are provided with pin holes; the groove of the goaf side connecting rod 2.1 and the groove of the goaf side sliding shoe plate 2.3 are inserted, and the pin shaft 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.
[0064] The goaf side sliding shoe assembly I 2a and the goaf side sliding shoe assembly II 2b further comprise a pin shaft fixing plate 2.6; the pin shaft fixing plate 2.6 is fixed on the goaf side connecting rod 2.1 by a screw, and the pin shaft 2.2 is pressed.
[0065] The goaf side sliding shoe assembly II 2b further comprises a goaf side machine body connecting pin 2.4; the goaf side machine body connecting pin 2.4 of the goaf side sliding shoe assembly II 2b is connected with the goaf side sliding shoe installation position II 3.4 through the goaf side connecting rod 2.1, and the goaf side connecting rod 2.1 and the goaf side sliding shoe installation position II 3.4 are both provided with clamping grooves 2.7, and the goaf side connecting rod 2.1 and the goaf side sliding shoe installation position II 3.4 are clamped and fixed through the clamping grooves 2.7.
[0066] Embodiment 4
[0067] The embodiment provides a height adjusting method of a thin seam coal mining machine along a working face, which is unilateral height adjustment; the coal wall side sliding shoe plate 1.4 and the goaf side sliding shoe plate 2.3 in the thin seam coal mining machine height adjusting device are located on the scraper conveyor 8, according to the needs of the working face, the coal wall side sliding shoe installation position I 3.1 and the coal wall side sliding shoe assembly I 1a installed thereon and the goaf side sliding shoe installation position I 3.3 and the goaf side sliding shoe assembly I 2a installed thereon are located on the A side or the B side of the coal mining machine body 3, and the height adjusting method comprises the following steps:
[0068] S1, when the filling cylinder 5 is a telescopic cylinder, the height-adjusting cylinder 4 adjusts the coal wall side shoe assembly 11a and the goaf side shoe assembly 12a, the filling cylinder 5 adjusts the coal wall side shoe assembly 11b, so that the two sets of coal wall side shoe plates 1.4 are at the same height, the two sets of goaf side shoe plates 2.3 are at the same height, and the shearer body 3 is in a horizontal state, the filling cylinder 5 remains unchanged, and the side where the coal wall side shoe installation position 13.2 and the goaf side shoe installation position 13.4 are located is taken as the reference side for height adjustment of the shearer body 3;
[0069] When the filling cylinder 5 is a non-telescopic cylinder, the height-adjusting cylinder 4 adjusts the coal wall side shoe assembly 11a and the goaf side shoe assembly 12a, so that the two sets of coal wall side shoe plates 1.4 are at the same height, and the two sets of goaf side shoe plates 2.3 are at the same height. Since the height difference between the coal wall side shoe plate 1.4 in the coal wall side shoe assembly 11b and the goaf side shoe plate 2.3 in the goaf side shoe assembly 12b is the height difference on both sides of the scraper conveyor 8, at this time, the shearer body 3 is already in a horizontal state, and the side where the coal wall side shoe installation position 13.2 and the goaf side shoe installation position 13.4 are located is taken as the reference side for height adjustment of the shearer body 3.
[0070] S2, the height-adjusting cylinder 4 corresponding to the coal wall side shoe assembly 11a and the goaf side shoe assembly 12a is telescopic, the height-adjusting cylinder 4 can make a slight rotation around the cylinder pin 7, the coal wall side connecting rod 1.1 and the coal wall side shoe plate 1.4 swing around the coal wall side body connecting pin 1.2, the goaf side connecting rod 2.1 and the goaf side shoe plate 2.3 swing around the goaf side body connecting pin 2.4, the coal wall side shoe plate 1.4 and the goaf side shoe plate 2.3 are raised and lowered, the coal wall side shoe plate 1.4 rotates around the eccentric pin 1.5 and is always in contact with the scraper conveyor 8, the goaf side shoe plate 2.3 rotates around the pin 2.2 and is always in contact with the scraper conveyor 8, and the height of the side where the coal wall side shoe installation position 13.1 and the goaf side shoe installation position 13.3 are located is adjusted.
[0071] Example 5
[0072] The embodiment provides a height adjustment method for a thin seam shearer vertical working face, which is unilateral height adjustment, the coal wall side shoe plate 1.4 and the goaf side shoe plate 2.3 in the height adjustment device of the thin seam shearer are located on the scraper conveyor 8, and the height adjustment method comprises the following steps:
[0073] S1, when the filling cylinder 5 is a telescopic cylinder, the height-adjusting cylinder 4 adjusts the coal wall side shoe assembly 11a and the goaf side shoe assembly 12a, the filling cylinder 5 adjusts the coal wall side shoe assembly 11b, so that the two sets of coal wall side shoe plates 1.4 are at the same height, the two sets of goaf side shoe plates 2.3 are at the same height, and the shearer body 3 is in a horizontal state, and the filling cylinder 5 remains unchanged;
[0074] When the filling oil cylinder 5 is a non-extendable oil cylinder, the height-adjusting oil cylinder 4 extends and retracts to adjust the coal wall side shoe assembly 11a and the goaf side shoe assembly 12a, so that the two sets of coal wall side shoe plates 1.4 are at the same height and the two sets of goaf side shoe plates 2.3 are at the same height. Since the height difference between the coal wall side shoe plate 1.4 in the coal wall side shoe assembly 11b and the goaf side shoe plate 2.3 in the goaf side shoe assembly 12b is the height difference between the two sides of the scraper conveyor 8, at this time, the shearer body 3 is in a horizontal state, and the side on which the coal wall side shoe installation position 11.2 and the goaf side shoe installation position 12.4 are located is taken as the reference side for height adjustment of the shearer body 3;
[0075] S2, remove the eccentric mechanism in the coal wall side shoe assembly 11a and the coal wall side shoe assembly 11b, rotate 180° and reinstall the eccentric mechanism to realize the height adjustment of the shearer body 3 facing the coal wall side.
[0076] The specific process of step S2 is as follows: unscrew the screw 1.9 corresponding to the eccentric mechanism fixing plate 1.8, remove the eccentric mechanism fixing plate 1.8, remove the eccentric screw 1.8, remove the eccentric pin shaft sleeve 11.7, rotate 180° the eccentric pin shaft 1.5 and the eccentric pin shaft sleeve 11.6, rotate 180° the eccentric pin shaft sleeve 11.7 and fix it on the eccentric pin shaft 1.5 through the eccentric screw 1.8, then install the eccentric mechanism fixing plate 1.8, and adjust the coal wall side shoe assembly 11a and the coal wall side shoe assembly 11b, so as to realize the adjustment of the shearer perpendicular to the working face, and the adjustment height is 2 times the eccentric distance of the eccentric mechanism.
[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A height adjustment device for a thin coal seam mining machine, characterized in that, 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 and filling cylinder; 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, and a gob-side sliding shoe plate. The gob-side sliding shoe assembly I also includes a gob-side machine body connecting pin and 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; 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 connecting rod of the goaf-side sliding shoe assembly II 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.
2. The height adjustment device for a thin coal seam mining machine according to claim 1, 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.
3. The height adjustment device for a thin coal seam mining machine according to claim 1, 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.
4. The height adjustment device for a thin coal seam mining machine according to claim 3, 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.
5. The height adjustment device for a thin coal seam mining machine according to claim 1, 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.
6. The height adjustment device for a thin coal seam mining machine according to claim 5, 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.
7. The height adjustment device for a thin coal seam mining machine according to claim 6, characterized in that, Goaf side slipper assembly II also includes goaf side body connecting pins; The goaf-side sliding shoe assembly II has a goaf-side body connecting pin that passes through the goaf-side connecting rod and connects to the goaf-side sliding shoe mounting position II. Both the goaf-side connecting rod and the goaf-side sliding shoe mounting position II are provided with slots, and the goaf-side connecting rod and the goaf-side sliding shoe mounting position II are fixed by the slots.
8. The height adjustment device for a thin coal seam mining machine according to any one of claims 1-7, characterized in that, The height adjustment cylinder and the filling cylinder are embedded in the body of the coal mining machine, and the body of the coal mining machine is equipped with cylinder lugs for connecting with the height adjustment cylinder and the filling cylinder.
9. A method for adjusting the height of a thin coal seam mining machine along the working face, wherein the height adjustment is unilateral, characterized in that, The coal wall side slip shoe and the goaf side slip shoe in the height adjustment device of the thin coal seam mining machine according to any one of claims 1-8 are both located on the scraper conveyor chute, and the device includes the following steps: S1, when the filling cylinder is a telescopic cylinder, adjust the extension and retraction of the height cylinder to adjust the coal wall side slipper assembly I and the goaf side slipper assembly I, and adjust the extension and retraction of the filling cylinder to adjust the coal wall side slipper assembly II, so that the two sets of coal wall side slipper plates are at the same height, the two sets of goaf side slipper plates are at the same height, and the coal mining machine body is in a horizontal state. The filling cylinder remains unchanged, and the side where the coal wall side slipper installation position II and the goaf side slipper installation position II are located are used as the reference side for adjusting the height of the coal mining machine body. When the filling cylinder is a non-retractable cylinder, adjust the extension and retraction of the height cylinder to adjust the coal wall side slipper assembly I and the goaf side slipper assembly I, so that the two sets of coal wall side slipper plates are at the same height and the two sets of goaf side slipper plates are at the same height. Since 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, the coal mining machine body is now in a horizontal state. The sides where the coal wall side slipper installation position II and the goaf side slipper installation position II are located are used as the reference sides for adjusting the height of the coal mining machine body. S2, the corresponding height adjustment cylinders of coal wall side slipper assembly I and goaf side slipper assembly I extend and retract, the coal wall side connecting rod and the coal wall side slipper plate swing around the coal wall side machine body connecting pin, the goaf side connecting rod and the goaf side slipper plate swing around the goaf side machine body connecting pin, realizing the raising and lowering of the coal wall side slipper plate and the goaf side slipper plate. The coal wall side slipper plate rotates around the eccentric pin shaft and is always in contact with the scraper conveyor chute, the goaf side slipper plate rotates around the pin shaft and is always in contact with the scraper conveyor chute, realizing the adjustment of the height of the side where the coal wall side slipper installation position I and the goaf side slipper installation position I are located.
10. A method for adjusting the height of the vertical working face of a thin coal seam mining machine, wherein the height adjustment is unilateral, characterized in that, The coal wall side slip shoe and the goaf side slip shoe in the height adjustment device of the thin coal seam mining machine according to any one of claims 1-8 are both located on the scraper conveyor chute, and the device includes the following steps: S1, when the filling cylinder is a telescopic cylinder, adjust the extension and retraction of the cylinder to adjust the coal wall side slipper assembly I and the goaf side slipper assembly I, and adjust the extension and retraction of the filling cylinder to adjust the coal wall side slipper assembly II, so that the two sets of coal wall side slipper plates are at the same height, the two sets of goaf side slipper plates are at the same height, and the coal mining machine body is in a horizontal state, while the filling cylinder remains unchanged. When the filling cylinder is a non-retractable cylinder, adjust the extension and retraction of the height cylinder to adjust the coal wall side slipper assembly I and the goaf side slipper assembly I, so that the two sets of coal wall side slipper plates are at the same height and the two sets of goaf side slipper plates are at the same height. Since 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, the coal mining machine body is now in a horizontal state. The sides where the coal wall side slipper installation position II and the goaf side slipper installation position II are located are used as the reference sides for adjusting the height of the coal mining machine body. S2, remove the eccentric mechanism in coal wall side slipper assembly I and coal wall side slipper assembly II, rotate 180° and reinstall the eccentric mechanism to achieve the height adjustment of the coal mining machine body facing the coal wall side.
Citation Information
Patent Citations
Wall-caving-preventing coal cutter having large cutting height
CN107654229A
Height-adjustable and wear-resistant coal mining machine supporting mechanism
CN217028891U