Soil stripping apparatus

Abstract

The present application relates to the technical field of mine exploitation machinery, and particularly relates to a rock-soil stripping device, which comprises a cutter head, a shell, a water head, an eccentric excitation shaft, a driven shaft and a bearing assembly; the rear part of the driven shaft is used for being connected to a cutting device body, and the front part of the driven shaft is connected to the water head; the eccentric excitation shaft is installed in the driven shaft and is used for being connected to a driving part of the cutting device body; the shell is connected to the outer periphery of the driven shaft, the bearing assembly is installed between the driven shaft and the shell, and the cutter head is connected to the front end of the shell and is attached to the outer periphery of the water head. The rock-soil stripping device of the present application bears radial force and axial force through each part of the bearing assembly respectively, reduces axial derived force, makes the driven shaft and the shell present better rigidity, and solves the technical problems of poor stability and short service life of the existing high-strength rock-soil stripping device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine exploitation machinery, and in particular to a rock-soil stripping device. BACKGROUND

[0002] The existing high-strength rock-soil stripping device adopts a double-tapered roller bearing structure, the rigidity of the bearing arrangement is poor, and the bearing bears a large instantaneous axial derived force, resulting in low reliability. The eccentric excitation shaft moves axially due to inertia, which easily causes the supporting bearing to bear excessive axial force and be damaged. The existing design not only affects the stability and service life of the device, but also increases the frequency and cost of bearing maintenance and replacement.

[0003] The cutter of the existing high-strength rock-soil stripping device is severely worn in high-strength rock-soil cutting, resulting in high friction temperature and rapid wear, generating a large amount of mine dust and deteriorating the working environment. This not only affects the health of the operators, but also increases the maintenance cost of the device. Secondly, the energy consumption efficiency decreases sharply with the hardness of the rock-soil, the energy consumption and failure rate of the TBM and rotary drill increase sharply in high-strength rock-soil drilling, and the vibration intensifies, which not only reduces the operation efficiency, but also increases the failure risk of the device. In addition, the adaptability to complex geology is insufficient, the output rate of broken pieces is low, the powder is much, the cutting thrust is insufficient, and the rock breaking capacity is limited in the high-strength rock-soil of the cutter-type tunneling machine, and the size of the device is relatively large compared with the mine roadway, and the construction economy is relatively low.

[0004] Therefore, there is an urgent need for a device that can improve the efficiency of high-strength rock-soil breaking and the reliability of the device to solve the above technical problems. SUMMARY

[0005] The main purpose of the present application is to provide a rock-soil stripping device, which aims to solve the technical problems of poor stability and short service life of the existing high-strength rock-soil stripping device.

[0006] To achieve the above-mentioned purpose, the present application provides a rock-soil stripping device, which comprises a cutter head, an outer shell, a water head, an eccentric excitation shaft, a passive shaft and a bearing assembly; the rear part of the passive shaft is connected to the cutting device body, and the front part of the passive shaft is connected to the water head; the eccentric excitation shaft is installed in the passive shaft and is connected to the driving part of the cutting device body; the outer shell is connected to the outer periphery of the passive shaft, the bearing assembly is installed between the passive shaft and the outer shell, and the cutter head is connected to the front end of the outer shell and is attached to the outer periphery of the water head.

[0007] The rock-soil stripping device of the present application is further improved in that the bearing assembly comprises a cylindrical roller bearing and a ball bearing, the ball bearing is installed between the passive shaft and the outer shell, a spacer sleeve is provided on the passive shaft, and the cylindrical roller bearing is installed between the passive shaft and the outer shell through the spacer sleeve.

[0008] The geotechnical stripping equipment of the present application is further improved in that the number of cylindrical roller bearings is two, which are respectively a first cylindrical roller bearing and a second cylindrical roller bearing arranged at intervals;

[0009] The force expression of the first cylindrical roller bearing is: ;

[0010] The force expression of the second cylindrical roller bearing is: ;

[0011] The force expression of the ball bearing is: ;

[0012] Wherein, is the high-strength geotechnical counterforce borne by the geotechnical stripping equipment, is the angle between the high-strength geotechnical counterforce borne by the geotechnical stripping equipment and the axis of the passive shaft, is the distance between the force center of the geotechnical stripping equipment and the force center of the first cylindrical roller bearing, is the distance between the force centers of the first cylindrical roller bearing and the second cylindrical roller bearing.

[0013] The geotechnical stripping equipment of the present application is further improved in that a self-aligning roller bearing and a bearing seat are arranged between the eccentric excitation shaft and the passive shaft, the bearing seat is installed in interference fit with the passive shaft, and the self-aligning roller bearing is installed between the eccentric excitation shaft and the bearing seat.

[0014] The geotechnical stripping equipment of the present application is further improved in that the eccentric excitation shaft is installed in clearance fit with the water head, the water head is provided with a first lubricating oil passage, the outlet of the first lubricating oil passage corresponds to the clearance between the eccentric excitation shaft and the water head, a damping hole is installed on the side of the water head close to the passive shaft, and the damping hole is communicated with the first lubricating oil passage.

[0015] The geotechnical stripping equipment of the present application is further improved in that the passive shaft is provided with a second lubricating oil passage, the inlet of the second lubricating oil passage is used for connecting an external oil source, and the outlet of the second lubricating oil passage corresponds to the damping hole.

[0016] The geotechnical stripping equipment of the present application is further improved in that the water head is provided with a first flushing water passage, the inlet of the first flushing water passage is arranged on the side of the water head located on the passive shaft, and the outlet of the first flushing water corresponds to the cutter head; the passive shaft is provided with a second flushing water passage, the inlet of the second flushing water passage is used for connecting an external water source, and the outlet of the second flushing water passage corresponds to the inlet of the first flushing water passage.

[0017] The geotechnical stripping equipment of the present application is further improved in that a water sealing assembly for blocking flushing water and an oil sealing assembly for blocking lubricating oil are arranged between the water head and the passive shaft.

[0018] The rock-soil stripping equipment of the present application is further improved in that the eccentric excitation shaft is provided with a fairing, and the fairing is a sealed hollow structure.

[0019] The rock-soil stripping equipment of the present application is further improved in that the side of the passive shaft away from the shell is provided with a first flange and a second flange, and the first flange and the second flange form an oil storage groove.

[0020] The technical solution of the present application has the following beneficial effects:

[0021] The rock-soil stripping equipment of the present application bears radial force and axial force by each component of the bearing assembly, reduces the axial derived force, and makes the passive shaft and the shell have better rigidity, thereby solving the technical problems of poor stability and short service life of the existing high-strength rock-soil stripping equipment, achieving rapid rock breaking of hard rock without blasting, optimizing the bearing stress inside the device, and improving the economy, maintainability and reliability of the hard rock breaking device. The eccentric excitation shaft of the present application is connected with the bearing seat through the self-aligning roller bearing, the bearing seat is interference-fitted with the passive shaft, the coaxiality is ensured, and relative rotation with the passive shaft is prevented. The present application generates axial damping force due to the hydraulic throttling effect through the interaction between the first lubricating oil channel, the second lubricating oil channel and the damping hole, prevents the instantaneous axial displacement of the eccentric excitation shaft from being too large, prevents the self-aligning roller bearing from being damaged due to bearing excessive axial force, and improves the reliability and service life of the bearing. The present application realizes the cooling and dust reduction of the cutter head through the first flushing water channel and the second flushing water channel. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0023] Figure 1 is a longitudinal sectional view of the rock-soil stripping equipment of the present application;

[0024] Figure 2 is a longitudinal sectional view of the water head of the rock-soil stripping equipment of the present application (the dashed line is the first flushing water channel, and the solid line is the first lubricating oil channel);

[0025] Figure 3 is a longitudinal sectional view of the passive shaft of the rock-soil stripping equipment of the present application (the dashed line is the first flushing water channel, and the solid line is the first lubricating oil channel);

[0026] Figure 4It is a longitudinal section view of eccentric exciting shaft of rock-soil stripping equipment.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1, water head; 2, cutter head; 3, cutter tooth; 4, first locking nut; 5, shell; 6, first cylindrical roller bearing; 7, spacer sleeve; 8, driven shaft; 9, second cylindrical roller bearing; 10, ball bearing; 11, first snap ring; 12, second snap ring; 13, dust seal; 14, cover plate; 15, eccentric exciting shaft; 16, first angular contact ball bearing; 17, front bearing seat; 18, second angular contact ball bearing; 19, rear bearing seat; 20, second locking nut; 21, third snap ring; 22, connecting sleeve; 23, motor mounting seat; 24, motor; 101, first step surface; 102, first inner cylindrical surface; 103, second step surface; 104, second inner cylindrical surface; 105, first conical surface; 106, first ring groove; 107, damping hole; 109, external thread; 110, tool withdrawal groove; 111, second ring groove; 112, water outlet; 113, first sealing groove; 114, second sealing groove; 115, third sealing groove; 116, fourth sealing groove; 801, first inner column surface; 802, second inner column surface; 803, first inner step surface; 804, second inner step surface; 805, internal thread; 806, third step surface; 807, oil storage groove; 808, first outer column surface; 1501, second conical surface; 1502, first cylindrical surface; 1503, first shaft shoulder; 1504, second shaft shoulder; 1505, fairing; 1506, hollow structure. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0030] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0031] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0034] As shown in Figures 1-4 The present application provides a rock and soil stripping equipment, which comprises a cutter head 2, an outer shell 5, a water head 1, an eccentric excitation shaft 15, a driven shaft 8 and a bearing assembly; the rear part of the driven shaft 8 is used for connecting to the cutting equipment body, and the front part of the driven shaft 8 is connected to the water head 1; the eccentric excitation shaft 15 is installed in the driven shaft 8 and is used for connecting to the driving part of the cutting equipment body; the outer shell 5 is connected to the outer periphery of the driven shaft 8, the bearing assembly is installed between the driven shaft 8 and the outer shell 5, the cutter head 2 is connected to the front end of the outer shell 5 and is attached to the outer periphery of the water head 1.

[0035] Specifically, the water head 1 is screwed with the inner thread 805 of the passive shaft 8 through the outer thread 109. The outer thread 109 is provided with a tool withdrawal groove 110 to prevent assembly interference. The outer end of the cutter head 2 is provided with a cutter tooth 3 for stripping rock and soil. A dustproof ring 13 is installed between the rear of the passive shaft 8 and the rear of the outer shell 5, and an enclosing plate 14 is fixed outside the dustproof ring 13. A motor mounting seat 23 is fixed to the rear of the passive shaft 8, and a motor 24 is fixed on the motor mounting seat 23. The output shaft of the motor 24 is drivingly connected to the eccentric excitation shaft 15 through a connecting sleeve 22 to realize power transmission. The eccentric excitation shaft 15 is rotated by the motor 24 to generate centrifugal force, which is transmitted to the outer shell 5 through the first centering roller bearing 16, the second centering roller bearing 18, the eccentric excitation shaft 15 and the bearing assembly, and then to the cutter head 2, which converts the centrifugal force into excitation force required for rock cutting to realize stripping of rock and soil.

[0036] Preferably, the bearing assembly includes a cylindrical roller bearing and a ball bearing 10 installed between the passive shaft 8 and the outer shell 5. The passive shaft 8 is provided with a spacer sleeve 7, and the cylindrical roller bearing is installed between the passive shaft 8 and the outer shell 5 through the spacer sleeve 7.

[0037] Preferably, the number of cylindrical roller bearings is two, which are a first cylindrical roller bearing 6 and a second cylindrical roller bearing 9 arranged at intervals.

[0038] The force expression of the first cylindrical roller bearing 6 is: ;

[0039] The force expression of the second cylindrical roller bearing 9 is: ;

[0040] The force expression of the ball bearing 10 is: ;

[0041] Wherein, is the high-strength rock and soil reaction force borne by the rock and soil stripping equipment, is the angle between the high-strength rock and soil reaction force borne by the rock and soil stripping equipment and the axis of the passive shaft 8, is the distance between the force center of the rock and soil stripping equipment and the force center of the first cylindrical roller bearing 6, is the distance between the force centers of the first cylindrical roller bearing 6 and the second cylindrical roller bearing 9.

[0042] Specifically, the outer ring of the first cylindrical roller bearing 6 and the second cylindrical roller bearing 9 is free of a flange and can be assembled separately. The inner ring of the first cylindrical roller bearing 6 is fixed by the first locking nut 4 and the spacer sleeve 7, and the outer ring is fixed by the second snap ring 12 and the stepped surface of the housing 5. The inner ring of the second cylindrical roller bearing 9 and the ball bearing 10 is fixed by the third stepped surface 806 of the driven shaft 8 and the spacer sleeve 7, and the outer ring is fixed by the first snap ring 11 and the stepped surface of the housing 5. The first cylindrical roller bearing 6, the second cylindrical roller bearing 9 and the ball bearing 10 only bear axial force. Compared with the existing double-tapered roller bearing scheme, the bearing arrangement of the present application presents better rigidity, at the same time makes the bearing not subject to axial derived force, presents higher reliability.

[0043] Preferably, a self-aligning roller bearing is arranged between the eccentric excitation shaft 15 and the driven shaft 8, and the bearing seat is installed in interference fit with the driven shaft 8, and the self-aligning roller bearing is installed between the eccentric excitation shaft 15 and the bearing seat. Specifically, the number of self-aligning roller bearings is two, which are the first self-aligning roller bearing 16 and the second self-aligning roller bearing 18. The number of bearing seats is two, which are the front bearing seat 17 and the rear bearing seat 19. When the front bearing seat 17 and the rear bearing seat 19 are in interference fit with the first self-aligning roller bearing 16 and the second self-aligning roller bearing 18 respectively, the bearing assembly is realized by heating the bearing seat, which prevents rust caused by residual condensed water when the bearing is cold-mounted, at the same time ensures coaxiality, reduces bearing eccentric wear. In the present embodiment, the first self-aligning roller bearing 16 and the second self-aligning roller bearing 18 are selected to have a copper retainer, which improves the impact resistance of the bearing, prolongs the service life of the bearing, and further improves the reliability and economy of the device.

[0044] The inner ring of the second self-aligning roller bearing 18 is fixed by the second shaft shoulder 1504 and the second locking nut 20. The outer ring of the second self-aligning roller bearing 18 is limited by the rear bearing seat 19 and the motor connecting seat. The second self-aligning roller bearing 18 is a fixed end, which prevents the eccentric excitation shaft 15 from generating excessive axial displacement due to inertial force, resulting in bearing damage. The first stepped surface 101 of the water head 1 is used for limiting the outer ring of the first self-aligning roller bearing 16. The third snap ring 21 and the first shaft shoulder 1503 are used for limiting the inner ring of the first self-aligning roller bearing 16. The self-aligning roller bearing is a free end, and the axial clearance is between 1-3mm. The positioning of the self-aligning roller bearing is realized by the snap ring and the locking nut respectively, which prevents the eccentric excitation shaft 15 from being axially extruded due to thermal expansion, resulting in eccentric wear of the bearing roller and the bearing inner ring, causing stress concentration, thereby optimizing the bearing stress inside the device and improving the economy and maintainability of the device. The first inner cylindrical surface 102 has a diameter larger than the minimum installation diameter of the outer ring of the first self-aligning roller bearing 16. The second stepped surface 103 is about 5mm away from the first stepped surface 101, which prevents interference with the bearing retainer.

[0045] Further, the front bearing seat 17 and the rear bearing seat 19 are interference fitted with the first inner cylindrical surface 801 and the second inner cylindrical surface 802 of the driven shaft 8, which ensures coaxiality and prevents relative rotation with the driven shaft 8. A cylindrical tool can be used to press into the first inner step surface 803 and the second inner step surface 804 of the driven shaft 8 for limiting. The front bearing seat 17 and the rear bearing seat 19 are provided with threaded holes on the end faces, which can be used to pull out the bearing and the bearing seat as a whole by bolt connection with a tool, greatly improving the disassembly efficiency.

[0046] Preferably, as shown in Figure 1 and Figure 2 , the eccentric excitation shaft 15 is installed in clearance fit with the water head 1, the water head 1 is provided with a first lubricating oil passage, the outlet of the first lubricating oil passage corresponds to the clearance between the eccentric excitation shaft 15 and the water head 1, the water head 1 is provided with a damping hole 107 near the side close to the driven shaft 8, and the damping hole 107 is communicated with the first lubricating oil passage. Specifically, as shown in Figure 1 and Figure 4 , a narrow passage is formed between the first cylindrical surface 1502 of the eccentric excitation shaft 15 and the second inner cylindrical surface 104 of the water head 1 in clearance fit, for bearing lubricating oil to pass through. The first conical surface 105 of the water head 1 and the second conical surface 1501 of the eccentric excitation shaft 15 have the same taper, so as to facilitate installation in fit. The axial damping force generated by the hydraulic throttling effect can prevent the eccentric excitation shaft 15 from instantaneously moving too much in the axial direction, causing the self-aligning roller bearing to bear too large an axial force and be damaged, thereby improving the reliability of the bearing.

[0047] Preferably, as shown in Figure 1 and Figure 3 , the driven shaft 8 is provided with a second lubricating oil passage, the inlet of the second lubricating oil passage is used to connect an external oil source, and the outlet of the second lubricating oil passage corresponds to the damping hole 107. The bearing lubricating oil of the external oil source flows into the inlet of the first outer cylindrical surface 808 of the driven shaft 8 and flows out of the outlet of the first inner cylindrical surface 801. Then, the bearing lubricating oil flows into the hole in the first annular groove 106 of the water head 1 and flows out of the outlet of the third step surface 806. When the eccentric excitation shaft 15 moves axially due to inertial force, the above structure generates an axial damping force due to the hydraulic throttling effect, preventing the first self-aligning roller bearing 16 and the second self-aligning roller bearing 18 from bearing too large an axial force and being damaged.

[0048] Preferably, the water head 1 is provided with a first flushing water channel, the inlet of which is arranged on the side of the water head 1 located on the side of the driven shaft 8, and the outlet of which corresponds to the cutter head 2; the driven shaft 8 is provided with a second flushing water channel, the inlet of which is used to connect an external water source, and the outlet of which corresponds to the inlet of the first flushing water channel. The flushing water from the external water source flows into the first outer cylindrical surface 808 of the driven shaft 8, and then flows out from the first inner cylindrical surface 801, and then flows into the inner channel of the second annular groove 111 of the water head 1 and is sprayed out from the water outlet 112, thereby achieving the cooling and dust removal of the cutter head 2. The first flushing water channel and the first lubricating oil channel are arranged in the water head 1, and the second flushing water channel and the second lubricating oil channel are arranged in the driven shaft 8, so that the flushing water and the bearing lubricating oil flow through the driven shaft 8 and the water head 1 at the same time, thereby achieving the cooling of the cutter head 2 and the bearing lubricating oil, effectively inhibiting the local high temperature of the bearing, prolonging the service life of the bearing, and achieving the integrated design of heat dissipation, lubrication and buffering, simplifying the overall structure of the device and improving the reliability.

[0049] Preferably, the water head 1 and the driven shaft 8 are provided with a water sealing assembly for blocking the flushing water and an oil sealing assembly for blocking the lubricating oil. The water head 1 is provided with a first sealing groove 113, a second sealing groove 114, a third sealing groove 115 and a fourth sealing groove 116, and the water sealing assembly comprises a first sealing member and a second sealing member respectively arranged in the first sealing groove 113 and the second sealing groove 114, thereby achieving the sealing of the flushing water, blocking the external rock debris and preventing the flushing water from invading the internal part of the device. The oil sealing assembly comprises a third sealing member and a fourth sealing member respectively arranged in the third sealing groove 115 and the fourth sealing groove 116, thereby achieving the sealing of the bearing lubricating oil, preventing the bearing lubricating oil from being contaminated and improving the lubricating condition of the bearing. The first sealing member, the second sealing member, the third sealing member and the fourth sealing member can all be rubber rings.

[0050] Preferably, the eccentric excitation shaft 15 is provided with a fairing 1505, and the fairing 1505 is a sealed hollow structure 1506. The fairing 1505 is fixed on the first shaft shoulder 1503 and the second shaft shoulder 1504 by welding, thereby reducing the heat generated by the rotation friction of the eccentric excitation shaft 15 and reducing the rotation power consumption and heat dissipation demand. The welding seam of the fairing 1505 needs to meet the sealing requirement to prevent the bearing lubricating oil from entering the hollow part and causing the eccentric excitation force to decrease.

[0051] Preferably, the driven shaft 8 is provided with a first flange and a second flange on the side away from the housing 5, and the first flange and the second flange form an oil storage groove 807 therebetween. The oil storage groove 807 is used to increase the internal bearing lubricating oil storage volume, improve the heat capacity of the lubricating system and reduce the flow resistance of the bearing lubricating oil system. At the same time, it can also temporarily store part of the grinding debris, thereby reducing the risk of the eccentric excitation shaft 15 being stuck. The first flange and the second flange are respectively provided with a first inner stepped surface 803 and a second inner stepped surface 804.

[0052] The rock-soil stripping device of the present application bears radial force and axial force by each part of the bearing assembly respectively, reduces the axial derived force, makes the passive shaft 8 and the shell 5 present better rigidity, solves the technical problems of poor stability and short service life of the existing high-strength rock-soil stripping device, realizes non-explosive rapid rock breaking of hard rock, and can also optimize the bearing stress inside the device, improve the economy, maintainability and reliability of the hard rock breaking device. The eccentric excitation shaft 15 of the present application is connected with the bearing seat through the self-aligning roller bearing, the bearing seat is interference-fitted with the passive shaft 8, the coaxiality is ensured, and the relative rotation with the passive shaft 8 is prevented. The present application generates axial damping force through the interaction between the first lubricating oil channel, the second lubricating oil channel and the damping hole 107 due to the hydraulic throttling effect, prevents the instantaneous axial displacement of the eccentric excitation shaft 15 from being too large, prevents the self-aligning roller bearing from being damaged due to bearing excessive axial force, and improves the reliability and service life of the bearing. The present application realizes the cooling and dust reduction of the cutter head 2 through the first flushing water channel and the second flushing water channel.

[0053] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made according to the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the inventive concept of the present application is included in the patent protection scope of the present application.

Claims

1. A soil and rock stripping device, characterized in that, The device includes a cutter head (2), a housing (5), a water head (1), an eccentric excitation shaft (15), a passive shaft (8), and a bearing assembly; the rear of the passive shaft (8) is connected to the body of the cutting equipment, and the front of the passive shaft (8) is connected to the water head (1); the eccentric excitation shaft (15) is installed inside the passive shaft (8) and is used to connect to the drive component of the cutting equipment body; the housing (5) is connected to the outer periphery of the passive shaft (8), the bearing assembly is installed between the passive shaft (8) and the housing (5), and the cutter head (2) is connected to the front end of the housing (5) and attached to the outer periphery of the water head (1); The bearing assembly includes a cylindrical roller bearing and a ball bearing (10). The ball bearing (10) is installed between the driven shaft (8) and the housing (5). The driven shaft (8) is provided with a spacer (7). The cylindrical roller bearing is installed between the driven shaft (8) and the housing (5) through the spacer (7). The number of cylindrical roller bearings is two, namely a first cylindrical roller bearing (6) and a second cylindrical roller bearing (9) arranged at intervals. The force expression for the first cylindrical roller bearing (6) is: ; The force expression for the second cylindrical roller bearing (9) is: ; The force expression for the ball bearing (10) is as follows: ; in, For the high-intensity soil and rock reaction force borne by the soil and rock stripping equipment, The angle between the high-intensity soil and rock reaction force borne by the soil and rock stripping equipment and the axis of the passive shaft (8) is given. The distance between the stress center of the soil stripping equipment and the stress center of the first cylindrical roller bearing (6) is given. The distance between the centers of force of the first cylindrical roller bearing (6) and the second cylindrical roller bearing (9) is denoted as .

2. The soil and rock stripping equipment as described in claim 1, characterized in that, A self-aligning roller bearing and a bearing housing are provided between the eccentric excitation shaft (15) and the passive shaft (8). The bearing housing is installed with an interference fit to the passive shaft (8). The self-aligning roller bearing is installed between the eccentric excitation shaft (15) and the bearing housing.

3. The soil and rock stripping equipment as described in claim 1, characterized in that, The eccentric excitation shaft (15) and the water head (1) are fitted together with a clearance fit. The water head (1) is provided with a first lubricating oil channel. The outlet of the first lubricating oil channel corresponds to the clearance between the eccentric excitation shaft (15) and the water head (1). A damping hole (107) is installed on the side of the water head (1) near the passive shaft (8). The damping hole (107) is connected to the first lubricating oil channel.

4. The soil and rock stripping equipment as described in claim 3, characterized in that, The passive shaft (8) is provided with a second lubricating oil channel. The inlet of the second lubricating oil channel is used to connect to an external oil source, and the outlet of the second lubricating oil channel corresponds to the damping hole (107).

5. The soil and rock stripping equipment as described in claim 4, characterized in that, The water head (1) is provided with a first flushing water channel. The inlet of the first flushing water channel is located on one side of the water head (1) located on the passive shaft (8). The outlet of the first flushing water corresponds to the cutter head (2). The passive shaft (8) is provided with a second flushing water channel. The inlet of the second flushing water channel is used to connect to an external water source. The outlet of the second flushing water channel corresponds to the inlet of the first flushing water channel.

6. The soil and rock stripping equipment as described in claim 5, characterized in that, A water seal assembly for blocking flushing water and an oil seal assembly for blocking lubricating oil are provided between the water head (1) and the passive shaft (8).

7. The soil and rock stripping equipment as described in claim 1, characterized in that, The eccentric excitation shaft (15) is provided with a fairing (1505), and the fairing (1505) has a sealed hollow structure (1506) inside.

8. The soil and rock stripping equipment as described in claim 1, characterized in that, The passive shaft (8) is provided with a first flange and a second flange on the side away from the housing (5), and an oil reservoir (807) is formed between the first flange and the second flange.

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