An information feedback type counter-rotating cutting device and its usage method

Abstract

The present invention relates to the field of rapid tunneling of tunnels and roadways, and particularly relates to an information mutual feedback type opposite rotation cutting device and a using method. The device comprises a cutting head, an opposite rotation device, a power start-stop device, and an information mutual feedback analysis system. The cutting head includes a front rock-breaking component, a middle cutting component, and a tail shaping component. Driving shafts and bevel gears are welded to the rear parts of each component, and cutting teeth and material guiding plates are welded on the upper surface. Moreover, the layout patterns of the cutting teeth and the material guiding plates are the same as the rotation directions of the components where they are located, and rock mass fragmentation, cutting, and shaping are realized step by step. The opposite rotation device consists of two groups of bevel gears, which control the coaxial opposite rotation of the cutting head. The information mutual feedback analysis system is connected to the power start-stop device, and through a rotation speed and torque sensing device and a control device, it can monitor, feedback, and adjust the rotation speed and torque of the cutting head in real time, so as to realize the rapid tunneling of roadways with different lithologies under complex geological conditions. The device and the using method can effectively improve the roadway tunneling efficiency, reduce equipment loss, and alleviate the wear of the cutting head.

Description

Technical Field

[0001] The present invention relates to the field of rapid tunneling of tunnels and roadways, and particularly relates to an information mutual feedback type counter-rotating cutting device and a using method thereof. Background Art

[0002] Roadheaders are widely used in the construction fields of underground spaces such as mountain tunnels, subway tunnels, and coal mine roadways. The cutting head is the working mechanism of the tunnel and roadway roadheader, and its structure mainly includes a cutting head lift, a guiding plate, a tooth seat, cutting teeth, and other accessories, which are mainly used for cutting and crushing rocks. Therefore, the cutting head is the part of the roadheader with the largest wear amount. Therefore, the cutting head needs to be made of special steel to have good strength and wear resistance, and has a certain service life, and it can be replaced within a certain service cycle. At present, most of the domestic cutting heads are imitations of foreign products, and there is no customized design research on the cutting head for different cutting media, resulting in poor adaptability of the cutting head, inability to effectively break through complex geological conditions, and generally low operation efficiency. At the same time, there are still certain defects in the use of the cutting heads of the current roadheaders on the market. For example, when the cutting head of the roadheader rotates for a long time, the temperature of the cutting head rises and it is difficult to cool down, which seriously affects the use efficiency of the cutting head of the roadheader. Therefore, the performance of the cutting head determines the cutting efficiency and service life of the roadheader, and affects the overall stability and reliability of the roadheader.

[0003] At present, the following main problems exist in the tunneling work of the traditional roadheader cutting head in tunnels and roadways:

[0004] (1) The cutting head of the traditional roadheader is of an integral design, and its cutting method is single-direction integral rotary cutting. When cutting rock masses, the flexibility of the cutting head is poor, and its adaptability to the tunneling lithology and geological conditions is poor. It cannot adapt to the tunneling work of tunnels and roadways under complex geological lithology conditions. When the cutting head encounters a rock mass with higher hardness, the cutting head is prone to jamming, resulting in low rock tunneling efficiency of the roadheader;

[0005] (2) During the cutting process, the rotation speed and power of the roadheader cannot be self-adjusted in a timely manner according to the specific conditions of the on-site construction of the roadway. When the cutting head jams after cutting and crushing hard rock, since the rotation speed and power of the cutting head are not adjusted in time to meet the state of cutting hard rock, the roadheader will have an overload shutdown, which affects the tunneling efficiency. At the same time, when the rock mass cannot be effectively cut, it will lead to high tunneling energy consumption of the roadheader;

[0006] (3) When a traditional roadheader cuts rock mass, it causes single shear failure of the rock mass. The cutting head directly contacts the hard rock mass during tunneling and achieves the function of cutting and breaking the rock mass by rotating at high speed. This results in severe wear of the cutting head, and the torque on the bearings connected to it is relatively large, causing serious distortion of the bearings. Furthermore, it affects the cutting performance of the roadheader's cutting head. When the cutting performance of the roadheader's cutting head fails to meet the specified requirements, it will cause the roadheader to suddenly stop running. Sudden stops will seriously damage the performance of the roadheader, and multiple stops will lead to damage to the roadheader.

[0007] In addition, during the actual use of the roadheader, there are also serious problems such as severe damage to the pick and pick holder, serious wear of the large-end blade and the head body of the cutting head, short service life of the cutting head, weak drilling ability of the cutting head, inappropriate hardness of the cutting head, large vibration of the fuselage, and large dust during cutting. Therefore, improving the structural design of the existing cutting head, reasonably selecting the number of picks, correctly arranging the picks, and purposefully designing and using the motion parameters of the cutting head are the keys to improving the cutting performance of the roadheader used in medium-hard coal and rock working faces, reducing the consumption of picks and pick holders, and increasing the service life of the cutting head and the reliability of the machine.

[0008] In summary, it is necessary to design a new type of cutting head to overcome problems such as severe wear of the cutting head, jamming of the cutting head, and high tunneling energy consumption during cutting and rock breaking, improve the cutting efficiency, reduce the tunneling energy consumption. The new type of cutting head designed in the present invention changes the single-direction rotation cutting and rock breaking method, and instead uses a shear-splitting combined rock breaking method, which improves the rock breaking ability of the cutting head, reduces the wear degree of the cutting head and the torque on the bearings connected to it, and reduces the equipment energy consumption. Summary of the Invention

[0009] The purpose of the present invention is to address the existing problems and provide an information mutual-feedback type counter-rotating cutting device and its usage method, which can effectively solve problems such as jamming of the cutting head during drilling, severe wear of the cutting head, low tunneling efficiency, and high tunneling energy consumption.

[0010] To achieve the above purpose, the present invention provides the following technical solution: An information mutual-feedback type counter-rotating cutting device, comprising: a cutting head, a counter-rotating device, a power start-stop device, a rotational speed n and torque M sensing device, a rotational speed n and torque M control device, and an information mutual-feedback analysis system; the counter-rotating device is connected to the cutting head to control the coaxial counter-rotation of the cutting head; the information mutual-feedback analysis system is connected to the power start-stop device, and through the rotational speed n and torque M sensing device and the rotational speed n and torque M control device, it can monitor, feedback, and adjust the rotational speed and torque of the cutting head in real time, so as to achieve rapid tunneling of roadways with different lithologies under complex geological conditions;

[0011] The cutting head includes a front rock-breaking component, a middle cutting component, and a rear shaping component. A drive shaft and a bevel gear are welded to the rear of each component. Picks and material guiding plates are welded to each component, and the arrangement patterns of the picks and the material guiding plates are the same as the rotation direction of the component where they are located, successively achieving the fragmentation, cutting, and shaping of the rock mass step by step.

[0012] The front rock-breaking component, the middle cutting component, and the rear shaping component are each driven by their respective drive shafts to rotate independently. The rotation directions of the front rock-breaking component and the rear shaping component are the same, and the rotation direction of the middle cutting component is opposite to that of the front rock-breaking component and the rear shaping component.

[0013] The middle drive shaft is concentrically nested on the front drive shaft, and the rear drive shaft is concentrically nested on the middle drive shaft. The front drive shaft is connected to the front bevel gear, the middle drive shaft is connected to the middle bevel gear, and the rear drive shaft is connected to the rear bevel gear. The power start-stop device directly drives the front rock-breaking component to rotate through the front drive shaft, and drives the middle drive shaft and the rear drive shaft to rotate respectively through the middle bevel gear and the rear bevel gear, thereby driving the middle cutting component and the rear shaping component to rotate, successively achieving the fragmentation, cutting, and shaping of the rock mass step by step.

[0014] The front drive shaft is directly connected to the power start-stop device to achieve the initial fragmentation of the rock mass by the front rock-breaking component. The middle drive shaft is directly connected to the middle cutting component to achieve the re-cutting of the rock mass by the middle cutting component. The rear drive shaft is directly connected to the rear shaping component to achieve the final shaping of the rock mass by the rear shaping component.

[0015] The rotation speed n and torque M sensing device and the rotation speed n and torque M control device are arranged on the power start-stop device, feedback the rotation speed and torque parameters of the power start-stop device after electrical signal conversion, and transmit them to the power start-stop device in the form of electrical signals to adjust its rotation speed and torque parameters.

[0016] The reverse rotation device consists of three concentric bevel gears (front bevel gear, middle bevel gear, and rear bevel gear) installed vertically, and two independently horizontally installed primary steering transmission bevel gears and secondary steering transmission bevel gears. The front bevel gear drives the middle bevel gear through the primary steering transmission bevel gear, and the middle bevel gear drives the rear bevel gear through the secondary steering transmission bevel gear, thereby realizing the reverse rotation of the cutting head. Further, the anti-pollution cutting housing of the reverse rotation device has anti-pollution characteristics, and its surface is coated with an anti-pollution coating, which can protect the gear mechanism in the reverse rotation device from being worn by external rock powder intrusion.

[0017] The front bevel gear, middle bevel gear, tail bevel gear, primary steering transmission bevel gear and secondary steering transmission bevel gear all maintain a constant transmission ratio, as well as a relatively large rotational speed and torque transmission; the middle bevel gear is a double-sided gear of the same size;

[0018] The power start-stop device is connected to a rotational speed n and torque M sensing device, a rotational speed n and torque M control device, and an information feedback analysis system. The rotational speed n and torque M sensing device can collect the rotational speed and torque parameters of the cutting head in real time. After being processed and analyzed by the information feedback analysis system, the rotational speed n and torque M control device further optimizes and adjusts the rotational speed and torque of the cutting head by controlling the power start-stop device;

[0019] The judgment condition formula for the system in the information feedback analysis system to adjust the torque and rotational speed of the roadheader is:

[0020] The rotational speed of the cutting head of the roadheader is n. The rotational speed n of the cutting head that enables the cutting head of the roadheader to effectively cut the rock mass satisfies the following conditions:

[0021]

[0022] In the formula, A is a constant term, P is the cutting power of the roadheader, D is the average diameter of the cutting head, Z is the total number of picks on the cutting head, and F is the total cutting resistance of the picks on the cutting head. The cutting resistance is usually closely related to the strength of the rock. Generally, the higher the rock strength, the greater the cutting resistance.

[0023] According to the on-site statistical results, when the Proctor coefficient f of the rock mass < 4, the total cutting resistance F = 1500 - 2500 N; while in the rock mass with Proctor coefficient f ≥ 4, F = 3000 - 6000 N. From this, it can be deduced that when cutting the rock mass with Proctor coefficient f < 4, the rotational speed n of the cutting head is adjusted to:

[0024]

[0025] While when cutting the rock mass with Proctor coefficient f ≥ 4, the rotational speed n of the cutting head is adjusted to:

[0026]

[0027] Similarly, the torque of the cutting head of the roadheader is M. The cutting head torque M that enables the cutting head of the roadheader to effectively cut the rock mass satisfies the following conditions:

[0028]

[0029] In the formula, B is a constant term, D is the average diameter of the cutting head, Z is the total number of picks on the cutting head, and F is the total cutting resistance of the picks on the cutting head.

[0030] From the relationship between the Proctor coefficient f of the above rock mass and the total cutting resistance F, it can be obtained that when cutting a rock mass with a Proctor coefficient f < 4, the cutting head torque M is adjusted to:

[0031]

[0032] When cutting a rock mass with a Proctor coefficient f ≥ 4, the cutting head torque M is adjusted to:

[0033]

[0034] Furthermore, the usage method is as follows:

[0035] S1. When the cutting head cuts the rock mass, the rotational speed n and torque M sensing devices installed on the power start-stop device will monitor and feedback the rotational speed and torque parameters of the cutting head in real time, and transmit them to the information mutual feedback analysis system for processing and analysis;

[0036] S2. The information mutual feedback analysis system compares the rotational speed and torque parameters of the cutting head with the set formulas (2) and (5) respectively to determine whether the rotational speed and torque of the cutting head meet the set formulas (2) and (5);

[0037] S3. When the rotational speed and torque parameters of the cutting head meet the set formulas (2) and (5), the information mutual feedback analysis system determines that the cutting head is suitable for cutting and continues with rapid cutting;

[0038] S4. When the rotational speed and torque parameters of the cutting head do not meet the set formulas (2) and / or formula (5), the information mutual feedback analysis system determines that the cutting head is not suitable for cutting. At this time, the rotational speed and torque of the cutting head will be adjusted through the rotational speed n and torque M control device;

[0039] S5. When the adjusted rotational speed and torque parameters of the cutting head meet the set formulas (3) and (6), the information mutual feedback analysis system determines that the cutting head is suitable for cutting and continues with rapid cutting;

[0040] S6. When the adjusted rotational speed and torque parameters of the cutting head do not meet the set formulas (3) and / or formula (6), the information mutual feedback analysis system determines that the cutting head is not suitable for cutting. At this time, the rotational speed and torque parameters of the cutting head will continue to be adjusted through the rotational speed n and torque M control device until they meet the set formulas (3) and (6), and then rapid cutting will continue;

[0041] S7. After the power start-stop device obtains the adjusted rotational speed and torque parameters from the information mutual feedback analysis system, the cutting head will obtain the rotational speed and torque matching the cutting of the rock mass, and can successively achieve the crushing, cutting, and shaping of the rock mass step by step, ultimately realizing rapid tunneling.

[0042] The beneficial effects achieved by the present invention:

[0043] (1) The coaxial counter-rotating effect achieved by the present invention facilitates the startup of the cutting head when the roadheader is used for roadway excavation under complex geological conditions. The front rock-breaking component, middle cutting component, and tail shaping component separately provided on the cutting head can achieve the forward and reverse rotation of each component, with high flexibility during rock cutting, which can prevent problems such as the cutting head getting stuck during the cutting process. When encountering hard rock formations, the cutting head can more easily break the hard rock by cutting and peeling, improving the rock-breaking ability. Finally, the shaping can improve the roadway construction efficiency.

[0044] (2) The information feedback analysis system can monitor the changes in the rotation speed and torque of the cutting head in real time and feed the change data back to the system program. The system adjusts the rotation speed and torque of the cutting head in real time according to the set tunneling parameters. This system has the characteristics of high precision, fast response speed, and can achieve self-adjustment and self-learning, which can avoid problems such as the roadheader being overloaded and shutting down, and high tunneling energy consumption, and can effectively handle different lithologic strata encountered during roadway tunneling and adapt to roadway tunneling work in various complex geological conditions. At the same time, it reduces the energy consumption of the equipment and reduces the wear on the cutting head of the roadheader.

[0045] (3) In the counter-rotating device, all gear sets are selected as bevel gears. The bevel gear set structure has the advantage of compact cooperation, and the bevel gear has the characteristics of long life, noise reduction and shock absorption, and high load-bearing capacity. It can maintain a constant transmission ratio and can transmit the relatively large torque and speed output by the power start-stop device of the roadheader to the cutting head of the roadheader. The anti-pollution cutting housing is protected by an anti-pollution coating, which has good anti-pollution function, can prevent coal dust from entering the interior, reduces the probability of failures of components such as the gear mechanism and bearings, ensures the cutting-in performance of the cutting head, and prevents mechanical damage to the roadheader. Description of the Drawings

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 It is a schematic structural diagram of an information feedback type counter-rotating cutting device of the present invention;

[0048] Figure 2 It is a schematic structural diagram of the front rock-breaking component of the present invention;

[0049] Figure 3 It is a schematic structural diagram of the middle cutting component of the present invention;

[0050] Figure 4It is a schematic structural diagram of the tail forming component of the present invention;

[0051] Figure 5 It is a schematic structural diagram of the opposite rotation device of the present invention;

[0052] Figure 6 It is a schematic diagram of the working process of the information mutual feedback analysis system of the present invention.

[0053] The reference numerals are: 1, cutting head; 1-1, front rock-breaking component; 1-1a, front cutting teeth; 1-1b, front material guiding plate; 1-1c, front driving shaft; 1-2, middle cutting component; 1-2a, middle cutting teeth; 1-2b, middle material guiding plate; 1-2c, middle driving shaft; 1-3, tail forming component; 1-3a, tail cutting teeth; 1-3b, tail material guiding plate; 1-3c, tail driving shaft; 2, opposite rotation device; 2-1, front bevel gear; 2-2, middle bevel gear; 2-3, tail bevel gear; 2-4, primary steering transmission bevel gear; 2-5, secondary steering transmission bevel gear; 2-6, anti-pollution cutting housing; 3, power start-stop device; 4, rotational speed n and torque M sensing device; 5, rotational speed n and torque M control device; 6, information mutual feedback analysis system. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0055] As Figure 1 , the embodiments of the present invention include the following: the cutting head 1, which includes three parts: the front rock-breaking component 1-1, the middle cutting component 1-2, and the tail forming component 1-3. The front rock-breaking component 1-1 further includes components such as the front cutting teeth 1-1a, the front material guiding plate 1-1b, and the front driving shaft 1-1c; the middle cutting component 1-2 further includes components such as the middle cutting teeth 1-2a, the middle material guiding plate 1-2b, and the middle driving shaft 1-2c; the tail forming component 1-3 further includes components such as the tail cutting teeth 1-3a, the tail material guiding plate 1-3b, and the tail driving shaft 1-3c; the opposite rotation device 2, which further includes components such as the front bevel gear 2-1, the middle bevel gear 2-2, the tail bevel gear 2-3, the primary steering transmission bevel gear 2-4, the secondary steering transmission bevel gear 2-5, and the anti-pollution cutting housing 2-6; the power start-stop device 3, the rotational speed n and torque M sensing device 4, the rotational speed n and torque M control device 5, and the information mutual feedback analysis system 6; the present invention redesigned the complete cutting head 1 into three components: the front rock-breaking component 1-1, the middle cutting component 1-2, and the tail forming component 1-3. Refer toFigure 1 , Figure 2 and Figure 5 As shown in Figure 1 , Figure 2 and Figure 5 , a front drive shaft 1-1c is welded to the rear of the front rock-breaking component 1-1, and a front bevel gear 2-1 is welded to the front drive shaft 1-1c and connected to the reverse rotation device 2. At the same time, the front drive shaft 1-1c is directly connected to the power start-stop device 3; Refer to Figure 1 , Figure 3 and Figure 5 As shown in Figure 1 , Figure 3 and Figure 5 , similarly, a middle drive shaft 1-2c is welded to the rear of the middle cutting component 1-2, and a middle bevel gear 2-2 is welded to the middle drive shaft 1-2c and connected to the reverse rotation device 2; Refer to Figure 1 , Figure 4 and Figure 5 As shown in Figure 1 , Figure 4 and Figure 5 , a rear drive shaft 1-3c is welded to the rear of the rear shaping component 1-3, and a rear bevel gear 2-3 is welded to the rear drive shaft 1-3c and connected to the reverse rotation device 2; The primary steering transmission bevel gear 2-4 and the secondary steering transmission bevel gear 2-5 are welded and fixed inside the anti-pollution cutting housing 2-6. The middle bevel gear 2-2 is a double-sided gear of the same size, so as to mesh and drive with the primary steering transmission bevel gear 2-4 and the secondary steering transmission bevel gear 2-5 respectively; The power start-stop device 3 is respectively connected to the rotational speed n and torque M sensing device 4, the rotational speed n and torque M control device 5 and the information feedback and analysis system 6, so as to realize the intelligent feedback control of the cutting head 1 of the roadheader during the cutting process.

[0056] A concentric shaft hole with the same diameter as the middle drive shaft 1-2c is opened inside the rear shaping component 1-3 and the rear drive shaft 1-3c welded thereto, so that the rear shaping component 1-3 and the rear drive shaft 1-3c can rotate nested on the middle drive shaft 1-2c; Similarly, a concentric shaft hole with the same diameter as the front drive shaft 1-1c is opened inside the middle cutting component 1-2 and the middle drive shaft 1-2c, so that the middle cutting component 1-2 and the middle drive shaft 1-2c can rotate nested on the front drive shaft 1-1c. The front drive shaft 1-1c drives the front rock-breaking component 1-1 to rotate under the action of the power start-stop device 3 of the roadheader, so as to drive the middle cutting component 1-2 and the rear shaping component 1-3 to rotate under the action of the reverse rotation device 2. Among them, the front rock-breaking component 1-1 rotates around the center of the front drive shaft 1-1c, the middle cutting component 1-2 also rotates around the front drive shaft 1-1c, and the rear shaping component 1-3 rotates around the front drive shaft 1-1c and also rotates around the middle drive shaft 1-2c.

[0057] As Figure 5As shown in the figure, in the counter-rotating device 2, the front bevel gear 2-1 rotates in a certain direction under the action of the front drive shaft 1-1c. The meshing transmission between the front bevel gear 2-1 and the middle bevel gear 2-2 through one of the primary steering transmission bevel gears 2-4 makes the rotation direction of the middle bevel gear 2-2 opposite to that of the front bevel gear 2-1, realizing the coaxial counter-rotation between the front rock-breaking component 1-1 and the middle cutting component 1-2. Similarly, the meshing transmission between the middle bevel gear 2-2 and the tail bevel gear 2-3 through the secondary steering transmission bevel gear 2-5 makes the rotation directions of the two component bevel gears opposite, also realizing the coaxial counter-rotation between the middle cutting component 1-2 and the tail forming component 1-3. Further, the anti-pollution cutting housing 2-6 of the counter-rotating device 2 has anti-pollution characteristics, and its surface is coated with an anti-pollution coating, which can protect the gear mechanism in the counter-rotating device 2 from being worn by external rock powder intrusion.

[0058] Combined with Figure 1 、 2 、3, 4, 5, the layout forms of the picks welded on each component and the material guide plate are the same as the rotation direction of the component where they are located, so as to realize the different functions undertaken by each component. The front rock-breaking component 1-1 is connected to the power start-stop device 3 to break the rock at the very front of the roadheader. The middle cutting device 1-2 rotates in the opposite direction to the front rock-breaking component 1-1 under the action of the counter-rotating device 2. After the front rock-breaking component 1-1 breaks the rock, it cuts the upper rock that has been broken but has not fallen. The tail forming component 1-3 with the largest diameter trims and forms the small protruding rocks on the roadway surface after the previous two components complete the breaking and cutting work.

[0059] As Figure 6 shown, in the information feedback analysis system 6, the judgment condition formula for the system to adjust the torque and speed of the roadheader is as follows:

[0060] Let the rotational speed of the cutting head 1 of the roadheader be n. If the cutting head 1 of the roadheader is to effectively cut the coal and rock mass, the rotational speed n of the cutting head needs to meet the following conditions:

[0061]

[0062] In the formula, A is a constant term, P is the cutting power of the roadheader, D is the average diameter of the cutting head, Z is the total number of picks on the cutting head, and F is the total cutting resistance of the picks on the cutting head. The cutting resistance is usually closely related to the strength of the rock. Generally, the higher the rock strength, the greater the cutting resistance.

[0063] The on-site statistical results show that when the Proctor coefficient f of the rock mass is less than 4, the total cutting resistance F = 1500 - 2500 N; while in the rock mass with the Proctor coefficient f ≥ 4, F = 3000 - 6000 N. From this, it can be deduced that when cutting the rock mass with the Proctor coefficient f < 4, the cutting head speed n is adjusted to:

[0064]

[0065] While when cutting the rock mass with the Proctor coefficient f ≥ 4, the cutting head speed n is adjusted to:

[0066]

[0067] Similarly, let the torque of the roadheader cutting head be M. If the roadheader cutting head is to effectively cut the rock mass, the cutting head torque M needs to meet the following conditions:

[0068]

[0069] In the formula, B is the constant term, D is the average diameter of the cutting head, Z is the total number of picks on the cutting head, and F is the total cutting resistance of the picks on the cutting head.

[0070] From the relationship between the Proctor coefficient f of the above rock mass and the total cutting resistance F, it can be obtained that when cutting the rock mass with the Proctor coefficient f < 4, the cutting head torque M is adjusted to:

[0071]

[0072] While when cutting the rock mass with the Proctor coefficient f ≥ 4, the cutting head torque M is adjusted to:

[0073]

[0074] The specific usage method is as follows:

[0075] S1. When the cutting head cuts the rock mass, the speed n and torque M sensing devices installed on the power start-stop device will monitor and feedback the speed and torque parameters of the cutting head in real time, and transmit them to the information feedback analysis system for processing and analysis;

[0076] S2. The information feedback analysis system compares the speed and torque parameters of the cutting head with the set formulas (2) and (5) respectively to determine whether the speed and torque of the cutting head meet the set formulas (2) and (5);

[0077] S3. When the speed and torque parameters of the cutting head meet the set formulas (2) and (5), the information feedback analysis system determines that the cutting head is suitable for cutting and continues to perform rapid cutting;

[0078] S4. When the rotational speed and torque parameters of the cutting head do not meet the set formula (2) and / or formula (5), the information feedback analysis system determines that the cutting head is not suitable for cutting. At this time, the rotational speed and torque of the cutting head will be adjusted through the rotational speed n and torque M control device;

[0079] S5. When the rotational speed and torque parameters of the adjusted cutting head meet the set formula (3) and formula (6), the information feedback analysis system determines that the cutting head is suitable for cutting, and rapid cutting continues;

[0080] S6. When the rotational speed and torque parameters of the adjusted cutting head do not meet the set formula (3) and / or formula (6), the information feedback analysis system determines that the cutting head is not suitable for cutting. At this time, the rotational speed and torque parameters of the cutting head will continue to be adjusted through the rotational speed n and torque M control device until the set formula (3) and formula (6) are met, and then rapid cutting continues;

[0081] S7. After the power start-stop device obtains the adjusted rotational speed and torque parameters from the information feedback analysis system, the cutting head will obtain the rotational speed and torque matching the rock mass to be cut, and the rock mass can be broken, cut and formed step by step in sequence, and finally rapid tunneling is achieved.

[0082] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. An information feedback type counter-rotating cutting device, characterized in that, Including: A cutting head (1), a counter-rotating device (2), a power start / stop device (3), a rotational speed n and torque M sensing device (4), a rotational speed n and torque M control device (5), and an information feedback and analysis system (6); the counter-rotating device (2) is connected to the cutting head (1) to control the coaxial counter-rotation of the cutting head (1); the information feedback and analysis system (6) is connected to the power start / stop device (3), and through the rotational speed n and torque M sensing device (4) and the rotational speed n and torque M control device (5), it can monitor, feedback, and adjust the rotational speed and torque of the cutting head (1) in real time to achieve the rapid tunneling of roadways with different lithologies under complex geological conditions; The cutting head (1) includes a front rock-breaking component (1-1), a middle cutting component (1-2), and a rear shaping component (1-3). A drive shaft and a bevel gear are welded to the rear of each component; picks and material guiding plates are welded on each component, and the layout patterns of the picks and material guiding plates are the same as the rotation direction of the component where they are located, and the rock mass is broken, cut, and shaped step by step in sequence; The front rock-breaking component (1-1), the middle cutting component (1-2), and the rear shaping component (1-3) are all independently rotated by their respective drive shafts. The rotation directions of the front rock-breaking component (1-1) and the rear shaping component (1-3) are the same, and the rotation direction of the middle cutting component (1-2) is opposite to the rotation directions of the front rock-breaking component (1-1) and the rear shaping component (1-2); The middle drive shaft (1-2c) is concentrically nested on the front drive shaft (1-1c), and the rear drive shaft (1-3c) is concentrically nested on the middle drive shaft (1-2c); the front drive shaft (1-1c) is connected to the front bevel gear (2-1), the middle drive shaft (1-2c) is connected to the middle bevel gear (2-2), and the rear drive shaft (1-3c) is connected to the rear bevel gear (2-3); the power start / stop device (3) directly drives the front rock-breaking component (1-1) to rotate through the front drive shaft (1-1c), and drives the middle drive shaft (1-2c) and the rear drive shaft (1-3c) to rotate through the middle bevel gear (2-2) and the rear bevel gear (2-3) respectively, and then drives the middle cutting component (1-2) and the rear shaping component (1-2) to rotate, and the rock mass is broken, cut, and shaped step by step in sequence; The counter-rotating device (2) consists of three concentric vertically-mounted front bevel gears (2-1), middle bevel gears (2-2), and rear bevel gears (2-3), and two independently horizontally-mounted primary steering transmission bevel gears (2-4) and secondary steering transmission bevel gears (2-5). The front bevel gears (2-1) drive the middle bevel gears (2-2) through the primary steering transmission bevel gears (2-4), and the middle bevel gears (2-2) drive the rear bevel gears (2-3) through the secondary steering transmission bevel gears (2-5), thereby achieving the counter-rotation of the cutting head (1). The anti-fouling cutting housing (2-6) of the counter-rotating device (2) has anti-fouling properties, and its surface is coated with an anti-fouling coating, which can protect the gear mechanism in the counter-rotating device (2) from being worn by external rock dust intrusion.

2. The information mutual feedback type counter-rotating cutting device according to claim 1, characterized in that: The front drive shaft (1-1c) is directly connected to the power start-stop device (3) to achieve the preliminary crushing of the rock mass by the front rock-breaking component (1-1). The middle drive shaft (1-2c) is directly connected to the middle cutting component (1-2) to achieve the re-cutting of the rock mass by the middle cutting component (1-2). The rear drive shaft (1-3c) is directly connected to the rear shaping component (1-3) to achieve the final shaping of the rock mass by the rear shaping component (1-3).

3. The information mutual feedback type counter-rotating cutting device according to claim 1, characterized in that: The front bevel gears (2-1), middle bevel gears (2-2), rear bevel gears (2-3), primary steering transmission bevel gears (2-4), and secondary steering transmission bevel gears (2-5) all maintain a constant transmission ratio. The middle bevel gears (2-2) are double-sided gears of the same size.

4. The information mutual feedback type counter-rotating cutting device according to claim 1, wherein: The power start-stop device (3) is connected to a rotational speed n and torque M sensing device (4), a rotational speed n and torque M control device (5), and an information feedback analysis system (6). The rotational speed n and torque M sensing device (4) can collect the rotational speed and torque parameters of the cutting head in real time. After being processed and analyzed by the information feedback analysis system (6), the rotational speed n and torque M control device (5) further optimally adjusts the rotational speed and torque of the cutting head (1) by controlling the power start-stop device (3) to achieve the crushing, cutting, and shaping of rock masses with different lithologies under complex geological conditions, thereby achieving rapid tunneling. When the Proctor coefficient f of the cut rock mass < 4, the rotational speed n of the cutting head (1) is adjusted to: When the Proctor coefficient f of the cut rock mass ≥ 4, the rotational speed n of the cutting head (1) is adjusted to: When the Proctor coefficient f of the cut rock mass < 4, the torque M of the cutting head (1) is adjusted to: When the Proctor coefficient f of the cut rock mass ≥ 4, the torque M of the cutting head (1) is adjusted to: In the formula, A and B are constant terms, P is the cutting power of the cutting head, D is the average diameter of the cutting head, and Z is the total number of picks on the cutting head.

5. A method for using an information feedback type counter-rotating cutting device according to any one of claims 1-4, characterized in that: It includes the following steps: S1. When the cutting head (1) cuts the rock mass, the rotational speed n and torque M sensing device (4) installed on the power start-stop device (3) will monitor and feedback the rotational speed and torque parameters of the cutting head (1) in real time, and transmit them to the information feedback analysis system (6) for processing and analysis. S2. The information feedback analysis system (6) compares the rotational speed and torque parameters of the cutting head (1) with the set formulas (2) and (5) respectively to determine whether the rotational speed and torque of the cutting head (1) meet the set formulas (2) and (5). S3. When the rotational speed and torque parameters of the cutting head (1) meet the set formulas (2) and (5), the information feedback analysis system (6) determines that the cutting head (1) is suitable for cutting and continues with rapid cutting. S4. When the rotational speed and torque parameters of the cutting head (1) do not meet the set formulas (2) and / or (5), the information feedback analysis system (6) determines that the cutting head (1) is not suitable for cutting. At this time, the rotational speed and torque of the cutting head (1) will be adjusted through the rotational speed n and torque M control device (5). S5. When the rotational speed and torque parameters of the adjusted cutting head (1) meet the set formulas (3) and (6), the information feedback analysis system (6) determines that the cutting head (1) is suitable for cutting and continues with rapid cutting. S6. When the rotational speed and torque parameters of the adjusted cutting head (1) do not meet the set formulas (3) and / or (6), the information feedback analysis system (6) determines that the cutting head (1) is not suitable for cutting. At this time, the rotational speed and torque parameters of the cutting head (1) will continue to be adjusted through the rotational speed n and torque M control device (5) until the set formulas (3) and (6) are met, and then rapid cutting will continue. S7. After the power start-stop device (3) obtains the adjusted rotational speed and torque parameters from the information feedback analysis system (6), the cutting head (1) will obtain the rotational speed and torque matching the rock mass to be cut, and the rock mass can be broken, cut and formed step by step in sequence, and finally rapid tunneling can be achieved.

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