Walking assistance support cleat and shearer

Abstract

This invention provides a walking assistance support slipper and a coal mining machine, relating to the field of coal mining machinery technology. The walking assistance support slipper is applied to a coal mining machine, which includes a machine body. The walking assistance support slipper includes a slipper assembly and at least two support assemblies. The at least two support assemblies are spaced apart along the length of the slipper assembly and located on the side of the slipper assembly facing the machine body. Each support assembly includes a support seat, a support rod, and an elastic element. The support seat is hinged to the slipper assembly, and a portion of the support rod extends into the support seat. The support rod is movable relative to the support seat along the axial direction of the support assembly. The end of the support rod away from the support seat is hinged to the machine body. The elastic element is disposed within the support seat, with one end abutting against the support seat and the other end abutting against the support rod. This invention, through a mechanical moving structure combined with an elastic element, enables adaptive movement of the support assembly, absorbing the impact load caused by undulations in the coal seam floor and improving the mobility of the coal mining machine.

Description

Technical Field

[0001] This invention relates to the field of coal mining machinery technology, and more specifically, to a walking auxiliary support slipper and a coal mining machine. Background Technology

[0002] In related technologies, the walking auxiliary support slipper installed on the bottom plate side of the coal mining machine adopts a linkage support structure of hydraulic cylinder and flat slipper plate. The walking auxiliary support slipper acts as a third point support and moves along the bottom plate of the coal seam to adjust the machine body posture.

[0003] When using hydraulic cylinders for walking auxiliary support slippers, the preset pressure needs to be large enough to support the machine body. Therefore, after locking the pressure, it is equivalent to rigid support. When encountering undulating working faces, it has basically no buffering and vibration reduction effect, making it difficult to adapt to complex undulating coal mining working face conditions and having poor obstacle crossing ability. Summary of the Invention

[0004] The present invention aims to at least solve the technical problem that existing or related technologies have walking auxiliary support slippers that have virtually no buffering and vibration reduction effect when encountering undulating working faces, making them difficult to adapt to complex and undulating coal mining working face conditions and having poor obstacle crossing ability.

[0005] Therefore, a first aspect of the present invention provides a walking assistance support slipper.

[0006] A second aspect of the present invention provides a coal mining machine.

[0007] In view of the above, one aspect of the present invention provides a walking assistance support slipper, which is applied to a coal mining machine. The coal mining machine includes a machine body, and the walking assistance support slipper includes: a slipper assembly; at least two support assemblies, which are spaced apart along the length of the slipper assembly and located on the side of the slipper assembly facing the machine body; each support assembly includes a support seat, a support rod, and an elastic element, the support seat is hinged to the slipper assembly, a portion of the support rod extends into the support seat, the support rod is movable relative to the support seat along the axial direction of the support assembly, and the end of the support rod away from the support seat is used to hinge to the machine body; the elastic element is disposed in the support seat, one end of the elastic element abuts against the support seat, and the other end of the elastic element abuts against the support rod.

[0008] The walking auxiliary support slipper proposed in this invention is applied to a coal mining machine, and can be installed on the machine body. As an auxiliary support structure for the coal mining machine, the walking auxiliary support slipper provides auxiliary support as the machine travels along the coal seam floor.

[0009] The walking assistance support skid includes a skid assembly and at least two support assemblies. The support assemblies are the main load-bearing and force-transmitting components, and all support assemblies are arranged sequentially at intervals along the length of the skid assembly, and are positioned as a whole on the side of the skid assembly facing the fuselage.

[0010] Each support assembly includes a support base, a support rod, and an elastic element. The lower end of the support base is hinged to the slipper assembly, allowing the support base to rotate relative to the slipper assembly about the hinge axis. The lower end of the support rod extends into the support base and can reciprocate linearly relative to the support base along the axial direction of the support assembly. The upper end of the support rod is hinged to the body of the coal mining machine. The elastic element is integrally disposed inside the support base, and the force between the support base and the support rod is transmitted through the elastic element.

[0011] This invention employs a mechanical moving support assembly combined with an elastic element. When the coal mining machine travels to a protruding position on the coal seam floor, the sliding shoe assembly is subjected to an upward lifting force from the coal seam floor, causing the support base to move closer to the machine body. The support rod moves inward from the support base, compressing the elastic element and converting the impact load into the elastic potential energy of the elastic element, thus achieving buffering and vibration absorption. When the coal mining machine travels to a recessed position on the coal seam floor, the elastic element releases its elastic potential energy, pushing the support base away from the machine body. This ensures that the sliding shoe assembly remains in contact with the coal seam floor, maintaining a stable support state and preventing the support from being suspended.

[0012] In summary, this invention, through a mechanical moving structure combined with elastic components, enables adaptive movement and buffering of the support components, effectively absorbing the impact loads caused by undulations in the coal seam floor, improving the obstacle-crossing ability of the coal mining machine, and reducing impact damage to the slippers and support components. Furthermore, the use of a mechanical elastic structure eliminates the need for hydraulic pipelines and control valve groups, resulting in a simple and reliable structure that extends equipment lifespan and reduces the frequency and cost of maintenance for underground equipment.

[0013] In some technical solutions of the present invention, optionally, the support base has a mounting cavity and an opening communicating with the mounting cavity, one end of the support rod extends into the mounting cavity through the opening, and the elastic element is accommodated in the mounting cavity.

[0014] In some technical solutions of the present invention, optionally, the support rod passes through the elastic member, and an annular limiting step is provided on the outer periphery of the rod segment of the support rod that extends into the mounting cavity; one end of the elastic member abuts against the bottom wall of the mounting cavity, and the other end of the elastic member abuts against the end face of the annular limiting step facing the bottom wall of the mounting cavity.

[0015] Optionally, in some technical solutions of the present invention, the support assembly further includes an end cap, which is disposed at one end of the support base with an opening, and the support rod passes through the end cap.

[0016] In some technical solutions of the present invention, optionally, there are two support components, namely a first support component and a second support component. The first support component is hinged to the fuselage to form a first hinge point, the second support component is hinged to the fuselage to form a second hinge point, the first support component is hinged to the skid shoe assembly to form a third hinge point, and the second support component is hinged to the skid shoe assembly to form a fourth hinge point. The first hinge point, the second hinge point, the third hinge point, and the fourth hinge point are respectively located at the four vertices of a parallelogram.

[0017] In some technical solutions of the present invention, optionally, the ski shoe assembly includes: a ski shoe body, a support base hinged to the ski shoe body; at least one set of rollers, the rollers being disposed on the side of the ski shoe body away from the support assembly, the rollers including rollers capable of rotating relative to the ski shoe body.

[0018] In some technical solutions of the present invention, optionally, the roller assembly further includes a pin and two steel sleeves; the roller has a central hole, which is arranged along the axial direction of the roller, and two axial end faces of the roller are respectively provided with mounting grooves, and the two steel sleeves are respectively mounted in the two mounting grooves; the pin passes through the slipper body and into the inner hole of the two steel sleeves, and the roller rotates around the pin through the steel sleeves.

[0019] In some technical solutions of the present invention, optionally, the inner wall of the steel sleeve is provided with a plurality of grease reservoirs for accommodating lubricating grease.

[0020] According to a second aspect of the present invention, the present invention also provides a coal mining machine, comprising: a machine body; a walking auxiliary support slipper as described in any of the above technical solutions; the walking auxiliary support slipper is disposed on the bottom plate side of the machine body, and the support assembly is hinged to the machine body.

[0021] The coal mining machine proposed in the second aspect of the present invention, because it includes the walking auxiliary support slipper as in any of the above technical solutions, has all the beneficial effects of the walking auxiliary support slipper in any of the above technical solutions.

[0022] Optionally, in some technical solutions of the present invention, the fuselage has a first cavity and a second cavity; at least two support components include a first support component and a second support component, the first support component being disposed in the first cavity and the second support component being disposed in the second cavity.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This shows one of the structural schematic diagrams of a coal mining machine in some embodiments of the present invention;

[0026] Figure 2 This shows one of the structural schematic diagrams of the walking assistance support slipper in some embodiments of the present invention;

[0027] Figure 3 This is a second schematic diagram of the structure of the walking assistance support slipper in some embodiments of the present invention;

[0028] Figure 4 The second schematic diagram of the coal mining machine in some embodiments of the present invention is shown.

[0029] Reference numerals: 10 Coal mining machine, 100 Traveling auxiliary support slipper, 110 Slipper assembly, 112 Slipper body, 118 Arc transition section, 120 Roller assembly, 122 Roller, 123 Center hole, 124 Embedded groove, 125 Axial end face, 126 Pin, 128 Annular shoulder, 130 Steel sleeve, 132 Inner hole, 134 Grease reservoir, 140 Support assembly, 142 Support seat, 144 Mounting cavity, 146 Opening, 148 Support rod, 150 Rod segment, 152 Annular limit Step, 154 Elastic element, 156 End cap, 158 Limiting element, 160 Screw, 170 First hinge point, 172 Second hinge point, 174 Third hinge point, 176 Fourth hinge point, 182 Spacer, 184 Snap ring, 190 First support assembly, 192 Second support assembly, 200 Body, 202 Bottom plate side, 204 First cavity, 206 First cavity wall, 208 Second cavity, 210 Second cavity wall, 300 Smooth shoe, 400 Guide shoe, 500 Coal seam floor plate. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0032] The following is combined Figures 1 to 4 This invention describes a walking assistance support slipper 100 and a coal mining machine 10.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of the present invention, a walking assistance support slipper 100 is proposed. The walking assistance support slipper 100 is applied to a coal mining machine 10, which includes a machine body 200. The walking assistance support slipper 100 includes: a slipper assembly 110; at least two support assemblies 140, which are spaced apart along the length of the slipper assembly 110 and located on the side of the slipper assembly 110 facing the machine body 200; each support assembly 140 includes a support seat 142, a support rod 148, and an elastic element 154. The support seat 142 is hinged to the slipper assembly 110, and a portion of the support rod 148 extends into the support seat 142. The support rod 148 is axially (e.g., along the support assembly 140) relative to the support seat 142. Figure 2 (In the direction indicated by arrow B) the support rod 148 moves away from the support base 142 and is hinged to the body 200; the elastic element 154 is disposed in the support base 142, one end of the elastic element 154 abuts against the support base 142, and the other end of the elastic element 154 abuts against the support rod 148.

[0034] In this embodiment, the walking auxiliary support slipper 100 proposed in this invention is applied to the coal mining machine 10, and the walking auxiliary support slipper 100 can be installed in conjunction with the body 200 of the coal mining machine 10. As an auxiliary support structure of the coal mining machine 10, the walking auxiliary support slipper 100 provides auxiliary support during the process of the coal mining machine 10 traveling along the coal seam floor 500.

[0035] The walking assistance support slipper 100 includes a slipper assembly 110 and at least two support assemblies 140. All support assemblies 140 are along the length of the slipper assembly 110 (e.g., ...). Figure 2 The components (in the direction indicated by the middle arrow A) are arranged at intervals and are set on the side of the skid assembly 110 facing the fuselage 200.

[0036] Each support assembly 140 includes a support base 142, a support rod 148, and an elastic element 154. The lower end of the support base 142 is hinged to the slipper assembly 110, and the support base 142 can rotate relative to the slipper assembly 110 about the hinge axis. The lower end of the support rod 148 extends into the support base 142 and can reciprocate linearly relative to the support base 142 along the axial direction of the support assembly 140. The upper end of the support rod 148 is hinged to the body 200 of the coal mining machine 10. The elastic element 154 is integrally disposed inside the support base 142, and the force between the support base 142 and the support rod 148 is transmitted through the elastic element 154.

[0037] In related technologies, the auxiliary support structure of coal mining machines often adopts the form of hydraulic cylinders. After the hydraulic cylinders are locked, the entire structure is in a rigid support state, and it requires the matching arrangement of hydraulic pipelines, control valve groups, and other auxiliary components, resulting in a complex system structure. When there are undulations in the coal seam floor, such as protrusions or depressions, the rigid support structure cannot adaptively adjust the support length, the slipper assembly has poor ability to pass through obstacles, and the impact load cannot be absorbed, which easily leads to deformation or damage to the support assembly and slipper assembly. At the same time, hydraulic seals are prone to failure in the underground coal dust and water vapor environment, resulting in oil leakage failures, and the equipment maintenance frequency and cost are both high.

[0038] To address the problems existing in the aforementioned related technologies, this invention adopts a structure in which a mechanically moving support assembly 140 is combined with an elastic element 154. When the coal mining machine 10 travels to the protruding position of the coal seam floor 500, the sliding shoe assembly 110 is subjected to the upward lifting force of the coal seam floor 500, causing the support seat 142 to move closer to the machine body 200. The support rod 148 moves relative to the support seat 142 and inward relative to the support seat 142, compressing the elastic element 154 and converting the impact load into the elastic potential energy of the elastic element 154, thereby achieving buffering and vibration absorption. When the coal mining machine 10 travels to the recessed position of the coal seam floor 500, the elastic element 154 releases its elastic potential energy, pushing the support seat 142 to move away from the machine body 200, causing the sliding shoe assembly 110 to always be in contact with the coal seam floor 500, maintaining a stable support state and preventing the support from being suspended.

[0039] In summary, this invention, through a mechanical moving structure in conjunction with the elastic element 154, enables the support component 140 to achieve adaptive movement and buffering, effectively absorbing the impact load caused by the undulations of the coal seam floor 500, improving the obstacle-crossing ability of the coal mining machine 10, and reducing impact damage to the slipper assembly 110 and the support component 140. Furthermore, the purely mechanical elastic structure eliminates the need for hydraulic pipelines and control valve groups, resulting in a simple and reliable structure that extends equipment lifespan and reduces the frequency and cost of maintenance for underground equipment.

[0040] In this embodiment, at least two support components 140 are spaced apart along the length of the slipper assembly 110 and located on the side of the slipper assembly 110 facing the fuselage 200. Specifically, the arrangement direction of the support components 140 is consistent with the length direction of the slipper assembly 110. The spaced arrangement of multiple sets of support components 140 can make the force on the slipper assembly 110 more even and avoid single-point overload. The fact that the support components 140 are located on the side of the slipper assembly 110 facing the fuselage 200 allows the support force transmission path to directly point to the fuselage 200, which facilitates the hinged assembly of the support components 140 and the fuselage 200 and ensures that the support force is effectively transmitted to the fuselage 200.

[0041] In this embodiment, a portion of the support rod 148 extends into the support seat 142 and can move relative to the support seat 142 along the axial direction of the support assembly 140. Specifically, the support rod 148 and the support seat 142 form a sleeve-type movable engagement structure. Through the axial reciprocating movement of the support rod 148 inside the support seat 142, the overall length of the support assembly 140 is dynamically changed, thereby adapting to the undulations of the coal seam floor 500 and ensuring that the slipper assembly 110 always remains in contact with the coal seam floor 500, maintaining a continuous support state.

[0042] Optionally, the number of support components 140 can be set according to the support load requirements of the machine body 200, such as setting two, three, four or more, to distribute the load of a single support component 140, improve the overall support capacity, and adapt to larger tonnage coal mining machine models.

[0043] Optionally, the support base 142 and the slipper assembly 110 are hinged together via a hinge shaft, which ensures smooth hinge rotation and facilitates disassembly and replacement, reducing the difficulty of later maintenance.

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the support base 142 has a mounting cavity 144 and an opening 146 communicating with the mounting cavity 144, one end of the support rod 148 extends into the mounting cavity 144 through the opening 146, and the elastic member 154 is accommodated in the mounting cavity 144.

[0045] In this embodiment, the support base 142 has an axially formed mounting cavity 144 inside, which is a blind hole structure extending axially along the support base 142. An opening 146 is formed at one end of the support base 142 facing the fuselage 200, and the opening 146 communicates with the interior of the mounting cavity 144. One end of the support rod 148 extends into the interior space of the mounting cavity 144 through the opening 146, and can reciprocate axially within the mounting cavity 144. The elastic element 154 is integrally housed inside the mounting cavity 144, and is arranged axially between the bottom wall of the mounting cavity 144 and the support rod 148.

[0046] The mounting cavity 144 provides an independent space for the elastic element 154 to be received and guided, limiting the radial movement of the elastic element 154 and ensuring that the elastic element 154 is always subjected to axial force and deformation, thus preventing the elastic element 154 from skewing and failing. The opening 146 provides an assembly channel for the support rod 148 to extend into the mounting cavity 144. The built-in housing structure protects the elastic element 154 and the mating surface, reducing the erosion of external coal dust, water vapor and rock debris, and extending the service life of the component.

[0047] like Figure 1 , Figure 2, Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the support rod 148 passes through the elastic member 154, and the outer periphery of the rod segment 150 of the support rod 148 extending into the mounting cavity 144 is provided with an annular limiting step 152; one end of the elastic member 154 abuts against the bottom wall of the mounting cavity 144, and the other end of the elastic member 154 abuts against the end face of the annular limiting step 152 facing the bottom wall of the mounting cavity 144.

[0048] In this embodiment, the rod segment 150 of the support rod 148, which extends into the mounting cavity 144, passes through the inner ring of the elastic member 154. An annular limiting step 152 is provided on the outer periphery of the rod segment 150 of the support rod 148 extending into the mounting cavity 144. The annular limiting step 152 protrudes outward along the radial direction of the support rod 148, with the protrusion direction perpendicular to the axis of the support rod 148. One end face of the elastic member 154 abuts against the bottom wall plane of the mounting cavity 144, and the other end face of the elastic member 154 abuts against the end face of the annular limiting step 152 facing the bottom wall of the mounting cavity 144. The elastic member 154 is compressed and clamped between the bottom wall of the mounting cavity 144 and the annular limiting step 152.

[0049] The annular limiting step 152 provides a stable annular bearing end face for the elastic element 154, ensuring that the elastic force of the elastic element 154 is evenly transmitted to the entire circumference of the support rod 148, and preventing the end of the elastic element 154 from shifting under force. The structure of the support rod 148 passing through the elastic element 154 can further limit the radial displacement of the elastic element 154, improve the stability of the elastic element 154 during compression and reset, and ensure that the elastic force is transmitted along the axial direction of the support assembly 140.

[0050] Optionally, the annular limiting step 152 and the support rod 148 are integrally formed.

[0051] Optionally, the outer wall of the annular limiting step 152 and the inner wall of the mounting cavity 144 are in clearance fit.

[0052] In some embodiments of the present invention, the elastic element 154 may optionally include a disc spring or a compression spring.

[0053] In this embodiment, the elastic element 154 is disposed inside the mounting cavity 144 of the support base 142, and is arranged axially between the support base 142 and the support rod 148 along the support assembly 140. The elastic element 154 may be a disc spring structure or a cylindrical compression spring structure. Both structures are installed axially along the support rod 148, and their two ends abut against the support base 142 and the support rod 148, respectively.

[0054] Disc springs offer greater support stiffness and load-bearing capacity within a smaller axial installation space, making them suitable for applications with compact installation spaces and heavy loads. Compression springs provide a longer travel distance and smoother elastic stiffness, making them suitable for applications with greater fluctuations. The choice between these two types can be made flexibly based on the actual load and installation space requirements.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the support assembly 140 may optionally include an end cap 156, which is disposed at one end of the support base 142 where an opening 146 is provided, and the support rod 148 passes through the end cap 156.

[0056] In this embodiment, the support assembly 140 further includes an end cap 156, which is disposed at one end of the support base 142 where the opening 146 is located. The plate surface of the end cap 156 covers the opening end face of the support base 142. A through hole is provided at the center of the end cap 156, through which the support rod 148 extends into the mounting cavity 144 of the support base 142. The support rod 148 can reciprocate axially relative to the end cap 156.

[0057] The end cap 156 is located at the open end of the support base 142, which can prevent external coal dust, rock chips and water vapor from entering the installation cavity 144, protecting the internal elastic element 154 and mating surface, reducing wear and corrosion, and extending the service life of the components. At the same time, the through hole of the end cap 156 can provide radial support and guidance for the extended section of the support rod 148, reducing radial sway of the support rod 148 during operation and improving the stability of movement.

[0058] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the support assembly 140 further includes at least two limiting members 158, which are spliced ​​on the outer periphery of the support rod 148. The limiting members 158 cooperate with the end cap 156 to restrict the support rod 148 from disengaging from the support base 142.

[0059] In this embodiment, the support assembly 140 further includes at least two limiting members 158. The at least two limiting members 158 are arranged circumferentially around the support rod 148, forming an annular limiting structure. Along the axial direction of the support rod 148, the limiting member 158 is located on the side of the end cap 156 facing the interior of the mounting cavity 144. The end face of the limiting member 158 facing the end cap 156 can abut against the inner end face of the end cap 156, thereby limiting the movement of the support rod 148 outward from the mounting cavity 144 and preventing the support rod 148 from completely detaching from the support base 142 under the elastic force of the elastic member 154.

[0060] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the limiting member 158 is a semi-circular ring, and the number of semi-circular rings is two; the end cap 156 is fastened to the support base 142 by screws 160.

[0061] In this embodiment, the limiting member 158 is specifically a semi-circular ring structure. There are two semi-circular rings, which are joined together radially on the outer periphery of the support rod 148 to form a complete annular limiting structure. The structure with two semi-circular rings is easy to manufacture and assemble, and can realize the axial limiting function. If damaged, a single semi-circular ring can be replaced individually, resulting in low maintenance costs.

[0062] End cap 156 is fastened to the open end of support base 142 by screws 160. The screws 160 pass axially through the mounting hole of end cap 156 and are screwed into the threaded hole at the end of support base 142, thus achieving a fast connection between end cap 156 and support base 142. The end cap 156 connected by screws 160 is easy to install and remove, and the fastening is reliable. It facilitates the inspection, replacement, and daily maintenance of internal components of support assembly 140, and allows for repeated installation and removal with stable connection accuracy. Optionally, multiple screws 160 are evenly distributed along the circumference of end cap 156.

[0063] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of the present invention, optionally, there are two support components 140, namely a first support component 190 and a second support component 192. The first support component 190 is hinged to the fuselage 200 to form a first hinge point 170, the second support component 192 is hinged to the fuselage 200 to form a second hinge point 172, the first support component 190 is hinged to the slipper assembly 110 to form a third hinge point 174, and the second support component 192 is hinged to the slipper assembly 110 to form a fourth hinge point 176. The first hinge point 170, the second hinge point 172, the third hinge point 174, and the fourth hinge point 176 are respectively located at the four vertices of a parallelogram.

[0064] In this embodiment, there are two support components 140, namely a first support component 190 and a second support component 192. The upper ends of the support rods 148 of the two support components 140 are hinged to the fuselage 200, respectively, forming a first hinge point 170 and a second hinge point 172. The lower ends of the support seats 142 of the two support components 140 are hinged to the slipper assembly 110, respectively, forming a third hinge point 174 and a fourth hinge point 176. The lines connecting the four hinge points form a parallelogram, and the four hinge points are located at the four vertices of the parallelogram.

[0065] The parallelogram-shaped hinged arrangement ensures that the sliding shoe assembly 110 remains parallel to the machine body 200 as it moves up and down with the undulations of the coal seam floor 500, preventing deflection of the sliding shoe assembly 110 and improving support stability and smoothness of movement. Simultaneously, it ensures that the two support assemblies 140 remain parallel, maintaining a stable direction of force transmission and preventing bending damage to the support assembly 140 due to lateral forces.

[0066] Optionally, the axes of the two support components 140 are set parallel to each other to further ensure the motion accuracy of the parallelogram mechanism, improve the synchronization of the movements of the two support components 140, and make the posture of the slipper component 110 more stable during movement.

[0067] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the ski shoe assembly 110 includes: a ski shoe body 112, a support base 142 hinged to the ski shoe body 112; at least one set of rollers 120, the rollers 120 being disposed on the side of the ski shoe body 112 away from the support assembly 140, the rollers 120 including rollers 122 rotatable relative to the ski shoe body 112.

[0068] In this embodiment, the slipper assembly 110 includes a slipper body 112 and at least one set of rollers 120. The lower end of the support base 142 of the support assembly 140 is hinged to the upper surface of the slipper body 112. The rollers 120 are disposed on the side of the slipper body 112 away from the support assembly 140, that is, on the lower side facing the coal seam floor 500. The rollers 120 include rollers 122, which are rotatable relative to the slipper body 112 about their own axis, and the outer peripheral surface of the rollers 122 is used to contact the coal seam floor 500.

[0069] The slipper body 112 serves as a load-bearing base, providing a unified mounting foundation for the support assembly 140 and the roller assembly 120, ensuring the positional accuracy and assembly reliability of each component. The roller assembly 120 converts the sliding friction between the slipper body 112 and the coal seam floor 500 into rolling friction, reducing the traveling resistance of the coal mining machine 10, reducing wear on the slipper bottom surface, extending the service life of the slipper, and simultaneously reducing the power consumption of the traveling mechanism.

[0070] Optionally, part of the roller 122 protrudes from the bottom surface of the slipper body 112, ensuring that the roller 122 contacts the coal seam floor 500 first during operation, avoiding sliding wear caused by the contact between the bottom surface of the slipper body 112 and the coal seam floor 500, and thus giving full play to the friction reduction function of the roller 122.

[0071] Optionally, the roller assembly 120 is embedded inside the slipper body 112, reducing the overall height of the slipper assembly 110 and saving installation space. At the same time, the slipper body 112 can provide lateral protection for the roller 122, reducing the impact damage of coal and rock to the sides of the roller 122.

[0072] Optionally, the slipper body 112 is a welded component or a casting.

[0073] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, there are multiple sets of roller groups 120, and the multiple sets of roller groups 120 are arranged at intervals along the walking direction of the skate body 112.

[0074] In this embodiment, there are multiple sets of roller groups 120. The multiple sets of roller groups 120 are arranged sequentially at intervals along the walking direction of the slipper body 112, and are all located on the side of the slipper body 112 away from the support assembly 140. The axis of the roller 122 of each set of roller groups 120 is perpendicular to the walking direction.

[0075] Multiple sets of rollers 122 are arranged at intervals along the walking direction, which can distribute the support load, reduce the force on a single set of rollers 122, improve the overall load-bearing capacity, and avoid damage to a single roller due to overload. At the same time, it can ensure that the slipper body 112 always has rollers 122 in contact with the coal seam floor 500 during the walking process, improving the stability of the walking process, reducing bumps and impacts, and improving support stability.

[0076] Optionally, at least two rows of roller groups 120 are also provided along the width direction of the skate body 112, which can further distribute the load, improve the support stability of the skate body 112 in the width direction, prevent the skate body 112 from tipping over, and adapt to wider skate bodies 112.

[0077] Optionally, the spacing between two adjacent sets of rollers 120 is equal.

[0078] Optionally, the number of roller assemblies 120 is set according to the bottom area of ​​the skate body 112, and arranged as compactly as possible.

[0079] like Figure 3 As shown, in some embodiments of the present invention, optionally, the roller assembly 120 further includes a pin 126 and two steel sleeves 130; the roller 122 has a central hole 123, which is arranged along the axial direction of the roller 122, and two axial end faces 125 of the roller 122 are respectively provided with recessed grooves 124, and the two steel sleeves 130 are respectively fitted into the two recessed grooves 124; the pin 126 passes through the slipper body 112 and into the inner hole 132 of the two steel sleeves 130, and the roller 122 rotates around the pin 126 through the steel sleeves 130.

[0080] In this embodiment, the roller assembly 120 includes a roller 122, a pin 126, and two steel sleeves 130. The roller 122 is positioned along its own axial direction (e.g., ...). Figure 3 A central hole 123 is provided (in the direction indicated by arrow D). Two axial end faces 125 of the roller 122 are respectively provided with recessed grooves 124 coaxial with the central hole 123. Two steel sleeves 130 are respectively embedded in the recessed grooves 124 on their corresponding sides and fixed relative to the roller 122. A pin 126 passes through the mounting position of the slipper body 112 and also through the inner holes 132 of the two steel sleeves 130. The roller 122 and the steel sleeves 130 rotate synchronously around the axis of the pin 126. A rotating friction pair is formed between the wall surface of the inner hole 132 of the steel sleeve 130 and the outer peripheral surface of the pin 126.

[0081] Using steel sleeve 130 as the rotating support component results in higher overall structural strength and stronger resistance to axial impact loads. This avoids the problem of bearings being easily damaged under heavy loads and axial forces in the well, improves the operational reliability and service life of roller assembly 120, and reduces the probability of component damage and maintenance costs.

[0082] Optionally, the steel sleeve 130 is installed and fixed in the mounting groove 124 using a cold fitting process to form an interference fit, ensuring the connection between the steel sleeve 130 and the roller 122 and preventing the steel sleeve 130 from coming loose from the mounting groove 124 during operation.

[0083] Optionally, the depth of the recessed groove 124 is matched with the axial length of the steel sleeve 130 to ensure accurate positioning and flush end faces after the steel sleeve 130 is installed, thereby improving the stability of axial contact.

[0084] like Figure 3 As shown, in some embodiments of the present invention, optionally, the inner hole 132 of the steel sleeve 130 is provided with a plurality of grease storage recesses 134, which are used to accommodate lubricating grease.

[0085] In this embodiment, the inner wall of the steel sleeve 130 has multiple grease reservoirs 134, which are recessed inward to form a receiving space. Before assembly, grease is filled into the grease reservoirs 134. During operation, when the pin 126 rotates relative to the steel sleeve 130, the grease in the grease reservoirs 134 continuously seeps out, forming a lubricating film on the surface of the friction pair.

[0086] The grease reservoir 134 stores a sufficient amount of grease to continuously lubricate the friction pair between the pin 126 and the steel sleeve 130, effectively reducing rotational friction resistance, reducing friction and wear, extending the service life of the steel sleeve 130 and the pin 126, and reducing the frequency of daily grease injection maintenance, making it suitable for downhole conditions where frequent maintenance is inconvenient.

[0087] Optionally, multiple grease reservoirs 134 are evenly distributed on the wall surface of the inner hole 132 of the steel sleeve 130, so that the lubrication effect is consistent throughout the friction pair, the wear is uniform, and the rotational stability is improved.

[0088] Optionally, the steel sleeve 130 includes a honeycomb steel sleeve, and the grease storage recess 134 is an inner cavity of the honeycomb steel sleeve.

[0089] Optionally, the outer periphery of the pin 126 is provided with an annular shoulder 128, and the roller assembly 120 also includes a spacer 182. The annular shoulder 128 abuts against the end face of a steel sleeve 130 opposite to the roller 122, and the spacer 182 is sleeved on the outer periphery of the pin 126. One end of the spacer 182 abuts against the end face of another steel sleeve 130 opposite to the roller 122, and the other end of the spacer 182 abuts against the slipper body 112. The annular shoulder 128 and the spacer 182 cooperate to restrict the axial displacement of the steel sleeve 130 and the roller 122.

[0090] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of the present invention, the roller assembly 120 may optionally include a retaining ring 184, which is fitted onto the end of the pin 126 to axially fix the pin 126 to the slipper body 112.

[0091] In this embodiment, the roller assembly 120 further includes a retaining ring 184. The retaining ring 184 is engaged with the outer periphery of the end of the pin 126 that extends out of the slipper body 112, along the axial direction of the pin 126 (e.g., ...). Figure 3 (In the direction indicated by the middle arrow C), one end face of the retaining ring 184 corresponds to the outer side of the slipper body 112, and the other end face of the retaining ring 184 corresponds to the end face of the spacer 182. The retaining ring 184 restricts the pin 126 from disengaging from the mounting position of the slipper body 112 axially.

[0092] The retaining ring 184 enables axial fixation of the pin 126, preventing axial movement or even detachment of the pin 126 during movement, thus ensuring the structural stability and operational safety of the roller assembly 120. The retaining ring 184 is simple to assemble and easy to disassemble, requiring no complex tools and facilitating future maintenance and component replacement.

[0093] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the slipper body 112 is provided with arc transition portions 118 at opposite ends along the walking direction.

[0094] In this embodiment, the sliding shoe body 112 is provided with arc transition portions 118 at opposite ends along the walking direction. The arc transition portion 118 smoothly transitions from the bottom surface of the sliding shoe body 112 to the end surface of the sliding shoe body 112, and the transition surface is an arc surface without sharp edges.

[0095] The rounded transition sections 118 at both ends of the walking direction can reduce the risk of the skid body 112 getting stuck when passing over obstacles such as protrusions, steps, and rocks, allowing the skid body 112 to climb and descend smoothly and improving the passability of the skid body 112. At the same time, it can eliminate the sharp edges at the ends, reduce stress concentration, improve the structural strength of the skid body 112, and prevent the ends from cracking and being damaged by impact.

[0096] Optionally, the two ends of the slipper body 112 along the walking direction have large rounded corners.

[0097] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments of the present invention, a coal mining machine 10 is proposed, the coal mining machine 10 includes: a body 200; a walking auxiliary support slipper 100 as in any of the above embodiments; the walking auxiliary support slipper 100 is disposed on the bottom plate side 202 of the body 200, and the support assembly 140 is hinged to the body 200.

[0098] In this embodiment, the coal mining machine 10 proposed by the present invention includes the walking auxiliary support slipper 100 as in any of the above embodiments, and therefore has all the beneficial effects of the walking auxiliary support slipper 100 in any of the above embodiments.

[0099] The coal mining machine 10 is a mining equipment used for coal seam mining operations in underground fully mechanized mining faces. It can travel along the track of the scraper conveyor and complete coal seam cutting, coal dropping and coal loading operations through the cutting drum.

[0100] In this embodiment, the coal mining machine 10 includes a body 200 and a traveling auxiliary support slipper 100. The traveling auxiliary support slipper 100 is disposed on the side of the body 200 facing the coal seam floor 500. The traveling auxiliary support slipper 100 includes a support assembly 140, the upper end of which is hinged to the shell of the body 200, and the slipper assembly 110 is disposed facing the coal seam floor 500. By adding a traveling auxiliary support slipper 100 to the floor side 202 of the body 200, the present invention forms a third auxiliary support point in addition to the guide slipper 400 and the smooth slipper 300, which can balance the center of gravity of the body 200, improve the stress state of the original guide slipper 400 and smooth slipper 300, reduce the load-bearing capacity of a single slipper, improve the overall support stability and traveling smoothness of the coal mining machine 10, and reduce the probability of equipment failure.

[0101] like Figure 4 As shown, in some embodiments of the present invention, optionally, the fuselage 200 has a first cavity 204 and a second cavity 208; at least two support components 140 include a first support component 190 and a second support component 192, the first support component 190 being disposed in the first cavity 204 and the second support component 192 being disposed in the second cavity 208.

[0102] In this embodiment, the housing of the machine body 200 has two independent receiving cavities, namely a first cavity 204 and a second cavity 208, which are arranged at intervals along the traveling direction of the coal mining machine 10. The first support assembly 190 is housed in the internal space of the first cavity 204, and the second support assembly 192 is housed in the internal space of the second cavity 208.

[0103] The structure of using two independent cavities to accommodate the corresponding support components 140 allows the installation spaces of the two sets of support components 140 to be independent of each other, and the movement process does not interfere with each other, which facilitates individual assembly and subsequent maintenance.

[0104] The side of the first support assembly 190 is arranged close to the first cavity wall 206 of the first cavity 204, and the side of the second support assembly 192 is arranged close to the second cavity wall 210 of the second cavity 208. The cavity walls of each cavity can respectively form lateral limiting on the corresponding support assembly 140, limiting the lateral offset of the support assembly 140, improving the posture stability of the support assembly 140 during operation, and preventing the support assembly 140 from deforming under lateral forces. At the same time, the built-in cavity mounting structure can save external space of the whole machine, making the overall structure of the body 200 more compact.

[0105] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, the coal mining machine 10 may optionally include a smooth shoe 300 and a guide shoe 400; the smooth shoe 300 and the guide shoe 400 are both installed on the machine body 200, and the smooth shoe 300, the guide shoe 400 and the walking auxiliary support shoe 100 together form the support structure of the machine body 200.

[0106] In this embodiment, the coal mining machine 10 also includes a smooth shoe 300 and a guide shoe 400. Both the smooth shoe 300 and the guide shoe 400 are installed on the lower part of the machine body 200. The smooth shoe 300, the guide shoe 400, and the traveling auxiliary support shoe 100 together constitute a multi-point support system for the machine body 200, providing vertical support to the machine body 200 from different positions. The three types of shoes together form a multi-point support system, which can distribute the weight of the machine body 200 and the cutting load, reduce the load-bearing capacity of a single shoe, improve the stability and load-bearing capacity of the entire machine, and extend the service life of each shoe.

[0107] The smooth shoe 300 is installed on the scraper conveyor side of the body 200 to cooperate with the scraper plate part of the scraper conveyor, providing vertical support for the body 200 and bearing most of the vertical load of the body 200.

[0108] The guide shoe 400 is installed on the scraper conveyor side of the machine body 200 to cooperate with the pin rail of the scraper conveyor, provide travel guidance for the machine body 200, and ensure that the coal mining machine 10 travels stably along the predetermined trajectory of the pin rail.

[0109] In the claims, description, and accompanying drawings of this invention, the term "plural" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the descriptive process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limiting the invention. The terms "connected," "installed," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this invention can be understood based on the specific circumstances of the above data.

[0110] In the claims, description, and accompanying drawings of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In the claims, description, and accompanying drawings of this invention, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A walking aid support slipper, characterized in that, Applied to a coal mining machine, the coal mining machine includes a machine body, and the traveling auxiliary support slipper includes: Slipper components; At least two support components are provided, with the at least two support components spaced apart along the length of the slipper assembly and located on the side of the slipper assembly facing the fuselage; Each of the support assemblies includes a support base, a support rod, and an elastic element. The support base is hinged to the slipper assembly. A portion of the support rod extends into the support base. The support rod is movable relative to the support base along the axial direction of the support assembly. One end of the support rod away from the support base is used for hinged to the fuselage. The elastic element is disposed within the support base, with one end of the elastic element abutting against the support base and the other end of the elastic element abutting against the support rod.

2. The walking aid support boot according to claim 1, characterized in that, The support base has a mounting cavity and an opening communicating with the mounting cavity. One end of the support rod extends into the mounting cavity through the opening, and the elastic element is housed within the mounting cavity.

3. The walking aid support slipper according to claim 2, characterized in that, The support rod passes through the elastic member, and an annular limiting step is provided on the outer periphery of the rod segment of the support rod that extends into the mounting cavity; One end of the elastic element abuts against the bottom wall of the mounting cavity, and the other end of the elastic element abuts against the end face of the annular limiting step facing the bottom wall of the mounting cavity.

4. The walking aid support slipper according to claim 2, characterized in that, The support assembly further includes an end cap, which is disposed at one end of the support base where the opening is located, and the support rod passes through the end cap.

5. The walking aid support slipper according to any one of claims 1 to 4, characterized in that, There are two support components, namely a first support component and a second support component. The first support component is hinged to the fuselage to form a first hinge point, the second support component is hinged to the fuselage to form a second hinge point, the first support component is hinged to the skid assembly to form a third hinge point, and the second support component is hinged to the skid assembly to form a fourth hinge point. The first hinge point, the second hinge point, the third hinge point, and the fourth hinge point are respectively located at the four vertices of a parallelogram.

6. The walking aid support boot according to any one of claims 1 to 4, characterized in that, The slipper assembly includes: The sliding shoe body, wherein the support base is hinged to the sliding shoe body; At least one set of rollers is disposed on the side of the slipper body away from the support assembly, the set of rollers including rollers rotatable relative to the slipper body.

7. The walking aid support slipper according to claim 6, characterized in that, The roller assembly also includes a pin and two steel sleeves; The roller has a central hole, which is arranged along the axial direction of the roller. The two axial end faces of the roller are respectively provided with mounting grooves, and the two steel sleeves are respectively mounted in the two mounting grooves. The pin passes through the slipper body and into the inner holes of the two steel sleeves, and the roller rotates around the pin through the steel sleeves.

8. The walking aid support slipper according to claim 7, characterized in that, The inner wall of the steel sleeve is provided with a plurality of grease reservoirs, which are used to hold lubricating grease.

9. A coal mining machine, characterized in that, include: body; Walking aid support slippers as described in any one of claims 1 to 8; The walking assistance support slipper is disposed on the bottom plate side of the fuselage, and the support assembly is hinged to the fuselage.

10. The coal mining machine according to claim 9, characterized in that, The fuselage has a first cavity and a second cavity; The at least two support components include a first support component and a second support component, wherein the first support component is disposed in the first cavity and the second support component is disposed in the second cavity.

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