Coal mining machine

Abstract

The invention provides a coal mining machine which comprises a body part and a cutting component, and the cutting component comprises a cutting part, a traction arm, a swing arm and a driving part; the cutting part is rotationally connected with the traction arm and the body part, and the driving part is rotationally connected with the body part and the cutting part; the swing arm is rotationally connected with the body part and the traction arm. The cutting part, the traction arm, the swing arm and the driving part form a four-connecting-rod structure, under the combined action of the swing arm, the driving part and the traction arm, a cutting force arm is obviously increased in the ascending process of cutting, and large cutting torque can be provided. In consideration of the influence of the self weight of the cutting part, the cutting moment of ascending of the cutting part is larger than that of descending of the cutting part, so that the traction arm is arranged, and on one hand, the traction arm changes the action direction of rodless cavity force of the cutting part (the cutting lifting oil cylinder) and is the same as the moment required by cutting lifting, that is, when the cutting lifting oil cylinder extends out, the cutting part ascends; when the cutting lifting oil cylinder retracts, the cutting device descends; and on the other hand, a larger cutting force arm is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mining, in particular to a coal mining machine. BACKGROUND

[0002] In combination Figures 1-3 As shown in the figure, the existing coal mining machine is composed of an upper cutting lifting oil cylinder 1' and a lower cutting lifting oil cylinder 2'. Specifically, the lower cutting lifting oil cylinder 2' is arranged at an intermediate position between the front end of the walking part and the front end of the body part. Due to structural limitations, the lower cutting lifting oil cylinder 2' cannot be arranged with a large cylinder diameter and piston rod diameter, so it cannot provide a larger cutting torque, which cannot meet the needs of modern coal mining machines.

[0003] In addition, the lower cutting oil cylinder cavity 4' is connected up and down, and there is an installation plate 5' between the oil cylinder and the walking part. The installation plate is thin in structure and is easy to form a fracture zone 6', which affects the connection strength of the walking part. In addition, the lower cutting lifting oil cylinder pin shaft 4' is low in position. During the mining process, part of the walking part is often buried below the ground, and it is very difficult to replace the pin shaft, bushing and oil cylinder. Personnel need to operate under the equipment, which has safety hazards.

[0004] Therefore, there is an urgent need for a coal mining machine to solve the technical problems existing in the prior art to some extent. SUMMARY

[0005] The purpose of the present application is to provide a coal mining machine to solve the technical problem of small cutting torque in the prior art to some extent.

[0006] The present application provides a coal mining machine comprising: a body part, one end of which away from the ground forms a mounting area; a cutting member having a cutting part, a traction arm, a swing arm and a driving part arranged in the mounting area; The cutting part is formed with at least two rotation connection points near one end of the body part, at least one of which is rotationally connected with the traction arm, and at least one of which is rotationally connected with the first predetermined position of the body part; The fixed end of the driving part is rotationally connected with the body part at the second predetermined position of the body part, and the output end of the driving part is rotationally connected with one end of the traction arm away from the cutting part; One end of the swing arm is rotationally connected with the body part at the third predetermined position of the body part, and the other end of the swing arm is rotationally connected with one end of the traction arm away from the cutting part.

[0007] In the above technical solution, further, the traction arm is in a box structure; The traction arm extends a first connecting part rotatably connected with the cutting part at one end close to the cutting part; The traction arm extends a second connecting part rotatably connected with the driving part and a third connecting part rotatably connected with the swing arm at one end away from the cutting part.

[0008] In the above technical solution, further, the body part comprises: A body, one end of which away from the ground is a mounting area; the mounting area extends a fourth connecting part rotatably connected with the driving part at the second preset position; the mounting area extends a sixth connecting part rotatably connected with the swing arm at the third preset position; Side support parts, respectively arranged on both sides of the body along the tunneling direction; the side support parts have a fifth connecting part rotatably connected with the cutting part.

[0009] In the above technical solution, further, the side support part comprises a support frame and a connecting plate connected above the support frame; The support frame is respectively arranged on both sides of the body along the tunneling direction, and located at one end of the body close to the ground; The connecting plate comprises a second segment and a first segment connected in sequence along the tunneling direction, and the size of the first segment in the vertical direction is smaller than the size of the second segment in the vertical direction; The first segment and the side wall of the body surround a first mounting space, and the second segment and the side wall of the body surround a second mounting space capable of forming the sixth connecting part.

[0010] In the above technical solution, further, the support frame is in a box structure; The first connecting position capable of being connected with the rear end of the walking part, the second connecting position capable of being connected with the middle segment of the walking part, and the third connecting position capable of being connected with the rear end of the walking part are sequentially formed along the tunneling direction.

[0011] In the above technical solution, further, the coal mining machine further comprises a flexible curtain assembly arranged in a ore accumulation area surrounded by the cutting part and the side support part; the flexible curtain assembly comprises a shielding part and a traction part; The shielding part forms a shielding surface capable of blocking the ore accumulation area; One end of the shielding part is rotatably connected with the cutting part, and the other end is connected with the traction part through a transmission part; the traction part pulls the shielding part so that the traction part can move with the cutting part.

[0012] In the above technical solution, further, the shielding part comprises a flexible belt; the transmission part comprises: A bearing plate is arranged above the first mounting space and overlaps the first section; A roller is arranged on the side of the bearing plate away from the second section by a mounting support; A dynamic sliding part is slidingly arranged between the mounting support and the second section, one end of the flexible belt is rotationally connected to the cutting part, and the other end is sequentially wound around the roller and the dynamic sliding part and connected to the mounting support through a connecting part.

[0013] In the above technical solution, further, the dynamic sliding part comprises: A clamping plate is arranged in two along the width direction of the body part, and an accommodation space is formed between the two clamping plates; A roller is arranged in the accommodation space and connected to the clamping plates through bearings; A traction rod is arranged on the side of the accommodation space away from the roller, and both ends are connected to the clamping plates.

[0014] In the above technical solution, further, the connecting part comprises a connecting plate; One end of the connecting plate is rotationally connected to the mounting support, and the other end is connected to the flexible belt sequentially wound around the roller and the roller;

[0015] In the above technical solution, further, an arc plate is arranged between the second section and the side wall of the body; the traction part comprises: A traction rope, one end of which is connected to the traction rod; A pulley block comprising a plurality of fixed pulleys, a plurality of fixed pulleys are arranged on the arc plate; A pendant, the other end of the traction rope is sequentially wound around the fixed pulley and connected to the pendant.

[0016] In the above technical solution, further, an inclined plate is arranged between the first section and the body; One end of the inclined plate is connected to the arc plate, and the other end extends downward of the mounting support at a preset angle with the ground; A material leakage hole extending along the length direction of the body is formed in the mounting support.

[0017] Compared with the prior art, the present application has the following beneficial effects: The present application provides a coal mining machine comprising: A body part, one end of which away from the ground forms a mounting area; A cutting member having a cutting part, a traction arm, a swing arm and a driving part arranged in the mounting area; The cutting portion has at least two rotatable connection points at one end near the main body, wherein at least one of the rotatable connection points is rotatably connected to the traction arm, and at least another rotatable connection point is rotatably connected to a first preset position of the main body. The fixed end of the drive unit is rotatably connected to the body unit at the second preset position of the body unit, and the output end of the drive unit is rotatably connected to the end of the traction arm that is away from the cutting part. One end of the swing arm is rotatably connected to the body at a third preset position of the body, and the other end of the swing arm is rotatably connected to the end of the traction arm away from the cutting part.

[0018] In summary, the cutting section, traction arm, swing arm, and drive unit constitute a four-bar linkage. Under the combined action of the swing arm, drive unit, and traction arm, the cutting lever arm increases significantly during the upward movement of the cutting section, thus providing a larger cutting torque. Considering the influence of the cutting section's own weight, the cutting torque during upward movement is greater than that during downward movement. Therefore, a traction arm is provided. The traction arm, on the one hand, changes the direction of the force in the rodless chamber of the cutting lifting cylinder, making it the same as the torque required for cutting and lifting; that is, the cutting section rises when the cutting lifting cylinder extends and descends when the cutting lifting cylinder retracts. On the other hand, it provides a larger cutting lever arm. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the first part of the structure in the prior art; Figure 2 This is a schematic diagram of the structure of the second part in the prior art from a first-view perspective. Figure 3 This is a schematic diagram of the structure of the second part in the prior art from a second perspective. Figure 4 A schematic diagram of the coal mining machine provided in this application from a first-view perspective; Figure 5 for Figure 4 Enlarged view of point A in the image; Figure 6 for Figure 4 Enlarged view of point B in the image; Figure 7 This is a structural schematic diagram of the coal mining machine provided in this application from a second-view perspective. Figure 8 is an enlarged view of C in Figure 7 is an enlarged view of D in Figure 9 Figure 7 Figure 10 is a cutting torque calculation model diagram of a prior art coal mining machine; Figure 11 is a cutting torque calculation model diagram of a coal mining machine provided in the present application; Figure 12 is a structural schematic diagram of a traction arm in a coal mining machine provided in the present application; Figure 13 is a structural schematic diagram of a part in a coal mining machine provided in the present application; Figure 14 is a structural schematic diagram of a flexible curtain assembly in a coal mining machine provided in the present application; Figure 15 is a structural schematic diagram of a dynamic sliding part in a coal mining machine provided in the present application; Figure 16 is a structural schematic diagram of a body part in a coal mining machine provided in the present application; Figure 17 is an enlarged view of E in Figure 16 is an enlarged view of F in Figure 18 Figure 16 is an enlarged view of G in

[0021] ​​​1 - body part; 101 - mounting area; 102 - body; 103 - fourth connecting part; 104 - fourth connecting lug; 105 - fourth hinging shaft; 106 - fifth hinging shaft; 107 - side support part; 108 - fourth hinging hole; 109 - fifth hinging hole; 110 - tunneling direction; 111 - sixth connecting part; 112 - sixth hinging shaft; 115 - second section; 116 - first section; 117 - first mounting space; 118 - second mounting space; 119 - first connecting position; 120 - second connecting position; 121 - third connecting position; 122 - bolt hole; 123 - ore accumulation area; 124 - flexible curtain assembly; 125 - shielding part; 126 - traction part; 127 - shielding surface; 128 - transmission part; 129 - flexible belt; 130 - bearing plate; 131 - roller; 132 - mounting bracket; 133 - first plate; 134 - second plate; 135 - movable sliding part; 136 - adapter part; 137 - clamping plate; 138 - containing space; 139 - bearing; 140 - shaft; 141 - shaft sleeve; 142 - traction rod; 143 - connecting plate; 144 - roller shaft; 145 - pin shaft; 146 - support shaft; 147 - connecting lug; 148 - arc-shaped plate; 149 - traction rope; 150 - pulley block; 151 - fixed pulley; 152 - pendant; 153 - inclined plate; 154 - material leakage hole; 155 - bottom plate; 156 - vertical plate; 157 - pull line channel; 158 - fixing rod; 159 - fifth connecting part; 160 - fifth connecting lug; 161 - sixth hinging hole; 162 - sixth connecting lug; 2 - cutting member; 201 - cutting part; 202 - traction arm; 203 - swing arm; 204 - driving part; 205 - first connecting part; 206 - first connecting lug; 207 - second connecting part; 208 - second connecting lug; 209 - third connecting lug; 210 - first hinging shaft; 211 - second hinging shaft; 212 - third hinging shaft; 217 - third connecting part; 3 - electrical system; 4 - hydraulic system; 5 - conveyer part; 6 - blade part; 7 - illuminating lamp; 8 - traveling part; 1' - upper cutting lifting oil cylinder; 2' - lower cutting lifting oil cylinder; 3' - lower cutting lifting oil cylinder containing cavity; 4' - lower cutting lifting oil cylinder pin shaft; 5' - mounting plate; 6' - breaking area. DETAILED DESCRIPTION

[0022] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, but rather, changes that will be apparent upon understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted. The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., oscillating 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.

[0023] To address the problem that existing coal mining machines cannot provide a larger cutting torque, this application provides a coal mining machine, which is described below in conjunction with... Figures 4-18 This coal mining machine will be described in detail. It is worth noting that, depending on the type of mining, a coal mining machine may also be called a potassium mining machine or a mining machine, etc.

[0024] The coal mining machine includes a main body 1, which can be understood as the main frame support of the coal mining machine. An installation area 101 is formed at the end of the main body 1 that is away from the ground. Traveling parts 8 are respectively provided at both ends of the main body 1 along its axial direction, and the traveling parts 8 drive the main body 1 to move along the tunneling direction 110.

[0025] Combination Figure 4 And refer to Figure 5 As shown, the coal mining machine also includes a cutting component 2, which includes a cutting part 201, a traction arm 202, a swing arm 203, and a drive part 204. The cutting part 201, the traction arm 202, the swing arm 203, and the drive part 204 are all located in the installation area 101.

[0026] The cutting section 201 is a cutting arm, which is installed at an inclined angle in the installation area 101 and extends out of the body section 1 in the tunneling direction 110. Specifically, at least two rotatable connection points are formed at the end of the cutting arm near the body section 1, at least one of which is rotatably connected to the traction arm 202, and at least another rotatable connection point is rotatably connected to a first preset position of the body section 1. Optionally, two rotatable connection points are formed at the end of the cutting arm near the body section 1. These rotatable connection points refer to two positions formed on the cutting arm, one of which is rotatably connected to the traction arm 202, and the other is rotatably connected to the first preset position of the body section 1. It should be noted that the first preset position refers to a position on the upper edge of the body section 1.

[0027] The drive unit 204 is a cutting and lifting hydraulic cylinder, and the fixed end of the cutting and lifting hydraulic cylinder is rotatably connected to the main body 1 at a second preset position. Here, the second preset position refers to a position at the front end of the main body 1.

[0028] In addition, the output end of the drive unit 204 is rotatably connected to the end of the traction arm 202 that is away from the cutting unit 201.

[0029] One end of the swing arm 203 is rotatably connected to the main body 1 at a third preset position, and the other end of the swing arm 203 is rotatably connected to the end of the traction arm 202 away from the cutting part 201.

[0030] In summary, the cutting section 201, traction arm 202, swing arm 203, and drive section 204 constitute a four-bar linkage. Under the combined action of the swing arm 203, drive section 204, and traction arm 202, the cutting lever arm increases significantly during the upward cutting process, thus providing a larger cutting torque. Considering the influence of the cutting section 201's own weight, the cutting torque during the upward cutting is greater than that during the downward cutting. Therefore, the traction arm 202 is provided. The traction arm 202 changes the direction of the force in the rodless chamber of the cutting lifting cylinder to be the same as the torque required for cutting and lifting, i.e., cutting rises when the cutting lifting cylinder extends and descends when the cutting lifting cylinder retracts; on the other hand, it provides a larger cutting lever arm.

[0031] In addition, since the cutting lifting cylinder is not directly hinged to the cutting part 201, the impact of the cutting force on the cylinder is reduced, which can improve the service life of the cutting cylinder.

[0032] Furthermore, the four-bar linkage structure consisting of the cutting section 201, traction arm 202, swing arm 203, and drive section 204 of the present invention is located above the main body 1, which has the advantage of facilitating trajectory adjustment and can adapt to large angle changes of the cutting arm. Large angle changes of the cutting arm can be achieved by adjusting only the four-bar linkage structure without altering other components, thereby meeting the needs of different working conditions. Compared to the existing method of using an upper cutting lifting cylinder combined with a lower cutting lifting cylinder (specifically, existing technologies directly drive the cutting arm to rise and fall with the cylinder, forming a triangular structure with the cutting arm, main body, and cylinder; during large-scale lifting and lowering of the cutting arm, a larger cylinder stroke is required, and the cylinder needs to be as far away as possible from the hinge axis between the cutting arm and the main body to provide a large cutting lever arm and increase the cutting torque; however, once the structural limit is reached, the cutting height cannot be further increased, and can only be achieved by adjusting structural components, resulting in a long design cycle and high cost), this application significantly improves the cutting torque, as detailed below with a set of calculation data.

[0033] Combination Figure 10 and Figure 11 As shown, A1 is the hinge shaft between the lower cutting lifting cylinder 2' and the main body, B1 is the hinge shaft between the lower cutting lifting cylinder 2' and the cutting arm, C1 is the hinge shaft between the cutting part and the main body, A2 is the hinge shaft between the upper cutting lifting cylinder 1' and the main body, and B2 is the hinge shaft between the upper cutting lifting cylinder 1' and the cutting part. D1 The cutting section 201 is hinged to the main body 1 (i.e., the fifth hinge shaft 106), E1 The cutting lifting cylinder (drive section 204) is hinged to the main body 1 (i.e., the fourth hinge shaft 105), E2 The cutting lifting cylinder (drive section 204) is hinged to the traction arm 202 (i.e., the second hinge shaft 211), F1 The swing arm 203 is hinged to the main body 1 (i.e., the sixth hinge shaft 112), F2 The swing arm 203 is hinged to the traction arm 202 (i.e., the third hinge shaft 212), and D2 The traction arm 202 is hinged to the cutting section 201 (i.e., the first hinge shaft 210).

[0034] Calculation of cutting torque for existing dual-cylinder system (lower cutting lifting cylinder 2' and upper cutting lifting cylinder 1'): Initial conditions, cutting lifting cylinder parameters: hydraulic oil pressure P = 20MPa; cylinder diameter D1 = 200mm; piston rod diameter D2 = 140mm; Calculation of cutting torque for the dual-cylinder system at its upper and lower limits (upward and downward): The cutting lever arm of the lower limit cutting cylinder is L1=1211; The cutting lever arm of the lower limit upper cutting cylinder is L2 = 622; The upper limit lower cutting cylinder cutting lever arm L3 = 847; The upper limit cutting cylinder cutting lever arm L4 = 803; The force exerted by the rodless cavity is F1 = P x 3.14 x D1² / 4 = 628000 N; The force exerted by the rod cavity is F2 = 20 x 3.14 (D1² - D2²) / 4 = 320280 N; The cutting moment M1 for the upward cut at the lower limit = (F1xL1 + F2xL2) / 1000 = 959722.2 Nm; The cutting moment M2 for the upper limit upward cut is M2 = (F1xL3 + F2xL4) / 1000 = 789100.84 Nm; The cutting torque M3 for the downward cut at the upper limit is M3 = (F2xL3 + F1xL4) / 1000 = 775561.16 Nm; The cutting moment M4 at the lower limit downward cut is M4 = (F2xL1 + F1xL2) / 1000 = 778475.08 Nm; The cutting torque of the cutting lifting cylinder with traction arm 202 in this application is calculated as follows: Parameters of the cutting lifting cylinder with traction arm 202: Cylinder diameter D3 = 280mm; Piston rod diameter D4 = 150mm; Force in the rodless chamber F3 = P x 3.14 x D3² / 4 = 1230880N; Force in the rod chamber F4 = 20 x 3.14 (D1² - D2²) / 4 = 877630N; Angle α1 between the lower limit cylinder and traction arm 202 = 11 degrees; Angle α2 between the upper limit cylinder and traction arm 202 = 28 degrees; Lower limit cutting arm L5 = 1014mm; Upper limit cutting arm L6 = 1570mm; The lower limit cutting upward traction force F5 = F3xCos(α1) = 1208288.12N; The lower limit upward cutting moment M5 = F5 x L5 = 1225204.15 Nm; The upward traction force at the upper limit of the cut is F6 = F3xCos(α2) = 1086945.66 N; The upper limit upward cutting moment M6 = F3 x L6 = 1706504.69 Nm; The traction force for the upper limit cut descent is F7 = F4xCos(α2) = 775003.35 N; The upper limit descent cutting moment M7 = F7 x L6 = 1216755.26 Nm; The traction force for the lower limit cut is F8 = F4xCos(α1) = 861521.76 N; The lower limit cutting torque is M8 = F8 x L5 = 873583.06 Nm.

[0035] Table 1 shows the comparison of cutting torque between the existing double-cylinder system and the four-bar linkage structure with traction arm 202 used in this application.

[0036] As can be seen from the cutting torque comparison table, the cutting torque of this application increases under various conditions. Specifically, the increase is significant at the upper limit position, mainly due to the large change in the cutting lever arm. The lower cutting lifting cylinder of the dual-cylinder system decreases during the upward movement, while the cutting lever arm of the upper cutting lifting cylinder increases, but not significantly. The change in this application during the upward movement is significant, increasing by 54.8%, because, supported by the swing arm 203, the rear support point of the cutting lifting cylinder is far from the hinge point between the cutting arm and the main body 1.

[0037] It is worth noting that the height of the tail end of the traction boom 202 affects the minimum tunneling height of the coal mining machine. Therefore, to control the height of the tail end of the traction boom 202, the length of the swing arm 203 is approximately half the length of the traction boom 202. To ensure the cutting arm length is maintained, and to prevent interference between the traction boom 202 and the conveyor section 5, the length of the traction boom 202 is between 1.1 and 1.3 times the length of the cutting arm.

[0038] In this embodiment, combined with Figure 5 and Figure 13 As shown, the traction arm 202 has a box-shaped structure, and the box-shaped traction arm 202 can resist the force of the cutting and lifting cylinder.

[0039] Specifically, the traction arm 202 extends from one end near the cutting section 201 with a first connecting portion 205 that is rotatably connected to the cutting section 201. The first connecting portion 205 includes a first connecting ear 206 and a first hinge shaft 210. Two first connecting ears 206 are spaced apart, and there is a connection gap between the two first connecting ears 206. This connection gap is used to place the connecting portion of the cutting section 201. The first hinge shaft 210 passes through one of the first connecting ears 206, the connecting end of the cutting section 201, and the other first connecting ear 206 in sequence, thereby realizing the rotatable connection between the traction arm 202 and the cutting section 201 by using the first hinge shaft 210.

[0040] Specifically, the traction arm 202 extends from the end opposite to the cutting portion 201 with a second connecting portion 207 and a third connecting portion 217. The traction arm 202 is rotatably connected to the drive portion 204 through the second connecting portion 207, and the traction arm 202 is rotatably connected to the swing arm 203 through the third connecting portion 217. The second connecting portion 207 is preferably formed at the other end of the traction arm 202 along its axial direction and opposite to the first connecting portion 205. It includes a second connecting ear 208 and a second hinge shaft 211. There are two second connecting ears 208, and there is also a connection gap between the two second connecting ears 208. This connection gap is used to place the output end of the drive portion 204. The second hinge shaft 211 passes through one of the second connecting ears 208, the output end of the drive portion 204, and the other second connecting ear 208 in sequence. The third connecting portion 217 is preferably formed at the other end of the traction arm 202 along its axial direction, away from the first connecting portion 205, and offset from the second connecting portion 207. Theoretically, the second hinge shaft 211 and the third hinge shaft 212 can be arranged coaxially 140, but for easier maintenance and installation, the second connecting portion 207 and the third connecting portion 217 are offset by a certain distance. The third connecting portion 217 includes a third connecting ear 209, which is integrally formed with the first connecting ear 206 and forms a connection gap with the traction arm 202. This connection gap is used to accommodate the connecting end of the swing arm 203. The third hinge shaft 212 passes through the third connecting ear 209, the connecting end of the swing arm 203, and the traction arm 202 in sequence.

[0041] It is worth noting that: the drive unit 204 has cutting and lifting cylinders arranged side by side, so the first connecting part 205 has two, and the first connecting ear 206 has four. Each of the four first connecting ears 206 has a connecting hole for the first hinge shaft 210 to pass through. The use of cutting and lifting cylinders arranged side by side can improve the driving force.

[0042] In this embodiment, combined with Figure 7 See also Figure 9 and combination Figures 16-18As shown, the main body 1 includes a main body 102, and the end of the main body 102 facing away from the ground is a mounting area 101. The mounting area 101 extends at a second preset position with a fourth connecting part 103 that is rotatably connected to the drive part 204. The mounting area 101 extends at a third preset position with a sixth connecting part 159 that is rotatably connected to the swing arm 203. The fourth connecting part 103 includes a fourth connecting ear 104 and a fourth hinge shaft 105. There are two fourth connecting ears 104, and a connection gap is formed between the two fourth connecting ears 104. This connection gap is used to place the fixed end of the drive part 204. The fourth hinge shaft 105 passes through one of the fourth connecting ears 104, the fixed end of the drive part 204, and the other fourth connecting ear 104 in sequence (a fourth hinge hole 108 is provided on the fourth connecting ear 104). The sixth connecting part 111 includes a sixth connecting ear 162 and a sixth hinge shaft 112. There are two sixth connecting ears 162 (a sixth hinge hole 161 is provided on the sixth connecting ear 162). A connecting gap is formed between the two sixth connecting ears 162. This connecting gap is used to place the connecting end of the swing arm 203. The sixth hinge shaft 112 passes through one of the sixth connecting ears 162, the connecting end of the swing arm 203 and the other sixth connecting ear 162 in sequence.

[0043] Still combined Figure 7 See also Figure 9 and combination Figures 16-18 As shown, the main body 1 also includes side support parts 107, which are respectively disposed at both ends of the main body 102 along the tunneling direction 110. Figure 4 As shown in the diagram, the side support 107 has a fifth connecting portion 159 that is rotatably connected to the cutting portion 201. The fifth connecting portion 159 includes a fifth connecting lug 160 and a fifth hinge shaft 106. A connection gap is formed between the fifth connecting lug 160 and the body 102. This connection gap is used to accommodate the connecting end of the cutting portion 201. The fifth hinge shaft 106 passes through the fifth connecting lug 160 and the connecting end of the cutting portion 201 in sequence.

[0044] Specifically, the side support 107 includes a support frame and a connecting plate connected to the top of the support frame. The support frame is respectively disposed on both sides of the main body 102 along the tunneling direction 110, and is located on the side of the main body 102 closer to the ground. The connecting plate is disposed above the support frame. Since the support frame is a frame structure, it has an inner side wall close to the main body 102 and an outer side wall away from the main body 102. The connecting plate is integrally formed with the outer side wall of the support frame away from the main body 102. In other words, the connecting plate extends vertically upward from the outer side wall of the support frame away from the main body 102.

[0045] For the support frame, it is preferable that the support frame has a box structure, and along the tunneling direction 110, it has a first connection position 119 that can be connected to the rear end of the traveling part 8, a second connection position 120 that can be connected to the middle section of the traveling part 8, and a third connection position 121 that can be connected to the rear end of the traveling part 8. By setting the support frame as a box structure, more bolts for connecting to the traveling part 8 can be arranged at the position of the second connection position 120 (bolt holes 122 are provided on the second connection position 120), thereby increasing the connection strength between the traveling part 8 and the main body 1. The first connection position 119 adopts a box structure, which improves the connection strength between the main body 1 and the traveling part 8. Further, the support frame includes a bottom plate 155, a top plate, and vertical plates 156, with the top plate spaced above the bottom plate 155 and the vertical plates 156 spaced between the bottom plate 155 and the top plate.

[0046] For the connecting plate, the connecting plate specifically includes a second section 115 and a first section 116 connected sequentially along the tunneling direction 110. The first section 116 refers to the first plate, and the second section 115 refers to the second plate. The vertical dimension of the first plate is smaller than that of the second plate, that is, the height of the first plate is smaller than that of the second plate in the vertical direction. In addition, a first installation space 117 is provided between the first section 116 and the side wall of the body 102. This first installation space 117 provides the possibility for the installation of the flexible curtain assembly 124 described below. A second installation space 118 is provided between the second section 115 and the side wall of the body 102, which can form a sixth connecting part 111. That is, the sixth connecting ear 162 mentioned above is formed above the second plate. Specifically, the sixth connecting ear 162 is integrally formed on the second plate, and a sixth hinge hole 161 for the sixth hinge shaft 112 to pass through is provided at the position of the sixth connecting ear 162.

[0047] In this embodiment, combined with Figure 6 , Figure 8 , Figures 13-15 As shown, since the height of the first section plate is less than the height of the second section plate, and since the height of the second section plate is equal to the height of the main body 102, an ore accumulation area 123 will be formed between the upper cutting part 201 and the side support part 107. In order to prevent ore from accumulating in this ore accumulation area 123, that is, to solve the problem of ore accumulation, a flexible curtain assembly 124 is provided in the ore accumulation area 123. The flexible curtain assembly 124 includes a shielding part 125 and a traction part 126.

[0048] The shielding part 125 has a shielding surface 127 that can block the ore accumulation area 123. The shielding surface 127 is formed at a certain angle in the ore accumulation area 123. When in use, the shielding surface 127 is always in a taut state, thereby achieving the function of shielding the ore.

[0049] One end of the blocking part 125 is rotatably connected to the cutting part 201, and the other end is connected to the traction part 126 via the transmission part 128; the traction part 126 pulls the blocking part so that the blocking part can move with the cutting part 201. That is, when the cutting part 201 rises, the blocking part 125 can rise with the cutting part 201, so that the blocking part 125 is pulled out by the cutting part 201 and forms the blocking surface 127.

[0050] Specifically, it still combines Figure 6 , Figure 8 , Figures 13-15 As shown, the shielding part 125 includes a flexible belt 129. The transmission part 128 includes a support plate 130, which is located above the first mounting space 117 and overlaps the upper edge of the first section 116. Preferably, the support plate 130 is fixed to the upper edge of the first section 116 by bolts. The transmission part 128 also includes a roller 131, which is disposed on the side of the support plate 130 away from the second section 115 by a mounting bracket 132, and the axial direction of the roller 131 is perpendicular to the side wall of the body 102. Optionally, the mounting bracket 132 includes a first plate 133 and a second plate 134. The first plate 133 and the second plate 134 are perpendicularly connected. The first plate 133 is parallel to the axial direction of the body 102, and the second plate 134 is perpendicular to the axial direction of the body 102. In this way, the first plate 133, the second plate 134 and the support plate 130 surround a receiving cavity with an opening facing upward and an opening facing away from the second section 115. The roller 131 is located in this receiving cavity.

[0051] Further integration Figure 6 , Figure 8 , Figures 13-15 As shown, the transmission unit 128 also includes a sliding part 135, which is slidably disposed between the mounting bracket 132 and the second section 115. One end of the flexible belt 129 is rotatably connected to the cutting part 201. Specifically, the cutting part 201 has two connecting lugs 147 on the side facing the blocking part 125. A connecting plate is connected between the two connecting lugs 147 by a pin 145. A support shaft 146 passes through the end of the connecting plate away from the pin 145, and the flexible belt 129 is fixedly wound around the support shaft 146. The other end of the flexible belt 129 passes sequentially around the roller 131 and the sliding part 135 and is connected to the mounting bracket 132 through the adapter part 136.

[0052] The aforementioned sliding part 135 includes a clamping plate 137, a roller 144, and a traction rod 142. Two clamping plates 137 are spaced apart along the width of the main body 1, and a receiving space 138 is formed between the two clamping plates 137. The roller 144 is disposed in the receiving space 138 and is connected to the clamping plate 137 via bearings 139. Optionally, the roller 144 includes a shaft 140 and a bushing 141, with the bushing 141 fitted onto the shaft 140. The traction rod 142 is disposed on the side of the receiving space 138 away from the roller 131, and both ends are bolted to the clamping plate 137. Furthermore, a fixing rod 158 is disposed at the end of the receiving space 138 away from the traction rod 142, and the fixing rod is also bolted to the clamping plate 137.

[0053] The aforementioned adapter 136 includes a connecting plate 143. A connecting lug 147 is provided on the side of the second plate 134 away from the roller 131. There are two connecting lugs 147. The connecting plate 143 is connected between the two connecting lugs 147 by a pin 145. A support shaft 146 passes through the end of the connecting plate 143 away from the pin 145. One end of the flexible belt 129 is rotatably connected to the cutting part 201, and the other end passes through the gap between the roller 131, the roller 144 and the traction rod 142 in sequence and is fixedly connected to the support shaft 146.

[0054] An arc-shaped plate 148 is provided between the second section 115 and the side wall of the main body 102; the traction part 126 includes a traction rope 149, a pulley block 150, and a pendant 152. The pulley block 150 includes multiple fixed pulleys 151, which are spaced apart on the arc-shaped plate 148; one end of the traction rope 149 is connected to the traction rod 142, and the other end passes through the fixed pulleys 151 in sequence and is connected to the pendant 152.

[0055] In addition, there is a gap between the flexible belt 129 and the body 102, and a small amount of ore may enter the gap. In order to discharge the ore in the gap, an inclined plate 153 is provided between the first section 116 and the body 102. One end of the inclined plate 153 is connected to the arc plate 148, and the other end extends downward toward the mounting bracket 132 at a preset angle to the ground. The mounting bracket 132 is provided with a material leakage hole 154 extending along the length of the body 102. So once ore falls into this gap, it will roll down the inclined surface of the inclined plate 153 and eventually leak out from the material leakage hole 154, thereby avoiding accumulation and obstruction of the cutting arm descent.

[0056] In addition, a pull line channel 157 is provided on the inclined plate 153 at the position corresponding to the traction rope 149; the pull line channel 157 allows the traction rope 149 to pass through.

[0057] This application also includes an electrical system 3, a hydraulic system 4, a transport unit 5, a shovel unit 6, a lighting unit 7, a traveling unit 8, and a rear support unit; wherein the functional components of the hydraulic system 4 are distributed on both sides of the main body 1 and located above the traveling unit, the shovel unit 6 is located at the front end of the main body 1, the transport unit 5 is located in the middle of the main body 1, passes through the main body and forms a transport channel with the shovel, and the lighting unit 7 is located on the traction arm 202; the electrical system 3 is located on the upper right side of the rear support unit, the traveling unit 8 is located on both sides of the main body 1 along the tunneling direction 110, and the rear support unit is fixedly connected to the rear of the main body 1.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A coal mining machine, characterized in that, include: The main body has an installation area formed at the end opposite to the ground; The cutting component has a cutting part, a traction arm, a swing arm, and a drive part disposed in the installation area; The cutting portion has at least two rotatable connection points at one end near the main body, wherein at least one of the rotatable connection points is rotatably connected to the traction arm, and at least another rotatable connection point is rotatably connected to a first preset position of the main body. The fixed end of the drive unit is rotatably connected to the body unit at the second preset position of the body unit, and the output end of the drive unit is rotatably connected to the end of the traction arm that is away from the cutting part. One end of the swing arm is rotatably connected to the body at a third preset position of the body, and the other end of the swing arm is rotatably connected to the end of the traction arm away from the cutting part.

2. The coal mining machine according to claim 1, characterized in that, The traction arm has a box-shaped structure; The traction arm extends from one end near the cutting part and has a first connecting part that is rotatably connected to the cutting part. The traction arm extends offset from the cutting part at one end, and has a second connecting part that is rotatably connected to the driving part and a third connecting part that is rotatably connected to the swing arm.

3. The coal mining machine according to claim 1, characterized in that, The body portion includes: The main body has an installation area at the end facing away from the ground; the installation area extends from the second preset position to have a fourth connecting part that is rotatably connected to the drive unit; the installation area extends from the third preset position to have a sixth connecting part that is rotatably connected to the swing arm. Side support portions are respectively disposed on both sides of the body along the tunneling direction; each side support portion has a fifth connecting portion that is rotatably connected to the cutting portion.

4. The coal mining machine according to claim 3, characterized in that, The side support includes a support frame and a connecting plate connected to the top of the support frame; The support frame is respectively disposed on both sides of the body along the tunneling direction, and is located at the end of the body closer to the ground; The connecting plate includes a second section and a first section connected sequentially along the tunneling direction, and the vertical dimension of the first section is smaller than the vertical dimension of the second section; A first mounting space is provided between the first segment and the side wall of the main body, and a second mounting space is provided between the second segment and the side wall of the main body, which can form the sixth connecting part.

5. The coal mining machine according to claim 4, characterized in that, The support frame has a box-like structure; Along the tunneling direction, there are sequentially formed a first connection position that can be connected to the rear end of the traveling part, a second connection position that can be connected to the middle section of the traveling part, and a third connection position that can be connected to the rear end of the traveling part.

6. The coal mining machine according to claim 4, characterized in that, The coal mining machine also includes a flexible curtain assembly disposed within the ore accumulation area enclosed by the cutting section and the side support section; the flexible curtain assembly includes a shielding section and a traction section; The shielding portion forms a shielding surface capable of blocking the ore accumulation area; One end of the blocking part is rotatably connected to the cutting part, and the other end is connected to the traction part through the transmission part; the traction part pulls the blocking part so that the blocking part can move with the cutting part.

7. The coal mining machine according to claim 6, characterized in that, The shielding part includes a flexible belt; the transmission part includes: The support plate is located above the first installation space and overlaps the first section; The roller is mounted on the side of the support plate opposite to the second section via a mounting bracket; The sliding part is slidably disposed between the mounting bracket and the second section. One end of the flexible belt is rotatably connected to the cutting part, and the other end passes around the roller and the sliding part in sequence and is connected to the mounting bracket through the adapter.

8. The coal mining machine according to claim 7, characterized in that, The sliding part includes: The clamping plates are arranged at intervals along the width direction of the body, and a receiving space is provided between the two clamping plates. Rollers are disposed in the receiving space and are connected to the clamping plates respectively via bearings; A traction rod is located on the side of the receiving space away from the roller, and its two ends are respectively connected to the clamping plate.

9. The coal mining machine according to claim 8, characterized in that, The adapter includes a connecting plate; One end of the connecting plate is rotatably connected to the mounting bracket, and the other end is connected to the flexible belt that passes around the roller and the shaft in sequence.

10. The coal mining machine according to claim 9, characterized in that, An arc-shaped plate is provided between the second segment and the side wall of the main body; the traction part includes: A traction rope, one end of which is connected to the traction rod; A pulley system includes multiple fixed pulleys, which are spaced apart on the arc-shaped plate. The other end of the traction rope passes through the fixed pulley and is connected to the pendant.

11. The coal mining machine according to claim 10, characterized in that, An inclined plate is also provided between the first segment and the main body; One end of the inclined plate is connected to the arc-shaped plate, and the other end extends downward toward the mounting bracket at a preset angle to the ground; A material leakage hole extending along the length direction of the body is provided on the mounting surface.

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