Walking driving speed reducer of heading machine

Abstract

The invention provides a traveling driving speed reducer of a heading machine. The traveling driving speed reducer comprises a modularized braking mechanism and a speed reducer body, the output end of the modularized braking mechanism can synchronously rotate along with the input end of the modularized braking mechanism, the output end of the modularized braking mechanism is detachably installed at the input end of the speed reducer body, and the input end of the speed reducer body can synchronously rotate along with the output end of the modularized braking mechanism. An output shaft of a motor is detachably installed at the input end of the modularized braking mechanism, the input end of the modularized braking mechanism can synchronously rotate along with the output shaft of the motor, the output end of the speed reducer body is detachably installed on a walking mechanism of the heading machine, and the walking mechanism of the heading machine can be synchronously driven by the output end of the speed reducer body. The modularized braking mechanism can be rapidly replaced under the underground severe working condition, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of travel reducers, and in particular to a travel drive reducer for a tunnel boring machine. Background Art

[0002] The travel reducer is the core component of the anchor boring machine. Its function is to control the forward, turning and backward movement of the boring machine by driving the crawler. The static braking of the anchor boring machine is achieved through the brake device at the input end of the travel reducer. Since the anchor boring machine works underground and the on-site environment is harsh, if the brake device fails and needs maintenance, it is necessary to unpack the reducer first, and then remove the brake device parts one by one to troubleshoot and repair the fault. Due to the limitations of the on-site working environment, the disassembly of the reducer and brake is very difficult or even impossible.

[0003] At the same time, the high-speed rotating bearing isolates the internal space of the brake from the reducer housing, forming a closed small cavity. The large amount of heat generated by the friction disc stirring the oil cannot be dissipated in time through the circulation of the lubricating oil, causing the temperature of the brake device to rise sharply in a short period of time, thereby causing the entire travel drive device to fail. Summary of the invention

[0004] In accordance with the technical problems raised above, a travel drive reducer for a tunnel boring machine is provided.

[0005] The technical means adopted by the present invention are as follows: A travel drive reducer for a tunnel boring machine, comprising a modular braking mechanism and a reducer body; the output end of the modular braking mechanism can rotate synchronously with the input end of the modular braking mechanism, the output end of the modular braking mechanism can be detachably mounted on the input end of the reducer body, and the input end of the reducer body can rotate synchronously with the output end of the modular braking mechanism; the output shaft of a motor is detachably mounted on the input end of the modular braking mechanism, the input end of the modular braking mechanism can rotate synchronously with the output shaft of the motor, the output end of the reducer body can be detachably mounted on the travel mechanism of the tunnel boring machine, and the travel mechanism of the tunnel boring machine can be synchronously driven by the output end of the reducer body.

[0006] Furthermore, the modular brake mechanism includes a brake seat, a transparent cover, an input spline sleeve, an outer friction plate, an inner friction plate, a piston, a spring pad and a spring; a stepped cavity is coaxially opened in the brake seat, and the stepped cavity includes a piston mounting section, a friction plate mounting section and a bearing mounting section, the diameters of which decrease successively from one end of the stepped cavity to the other end of the stepped cavity; the transparent cover is sealably mounted on the end surface of the brake seat that intersects with the piston mounting section; the input spline sleeve is coaxially mounted in the stepped cavity, one end of the input spline sleeve is rotatably mounted in the bearing mounting section through bearing I, and the other end of the input spline sleeve is rotatably mounted in the center hole of the transparent cover through bearing II; a plurality of outer friction plates are installed at intervals on the side wall of the friction plate mounting section along the axial direction of the friction plate mounting section and can remain circumferentially stationary with the brake seat, and the inner friction plates are installed at intervals on the side wall of the input spline sleeve along the axial direction of the input spline sleeve Several spline sleeves are installed and can rotate synchronously with the input spline sleeve, the outer friction plates and the inner friction plates are staggered along the axial direction of the brake seat and have overlapping areas; the piston is coaxially sleeved outside the input spline sleeve, the piston includes a large diameter section and a small diameter section whose diameters decrease successively from one end of the piston to the other end of the piston, the large diameter section is sealed and installed in the piston mounting section, the small diameter section is sealed and installed in the friction plate mounting section, a high-pressure oil chamber is formed between the large diameter section and the end face of the piston mounting section located in the brake seat, and a high-pressure oil inlet connected to the high-pressure oil chamber is opened on the brake seat; the spring pad is installed in the piston mounting section and is located between the piston and the transparent cover, and the spring is installed between the piston and the spring pad in a compressed state; the end of the input spline sleeve located in the bearing mounting section is the output end of the modular brake mechanism, and the end of the input spline sleeve located in the center hole of the transparent cover is the input end of the modular brake mechanism.

[0007] Further, the reducer body includes a three-stage parallel transmission mechanism; the three-stage parallel transmission mechanism includes a housing, a gear shaft, gear I, gear II, gear III and gear IV; the housing is provided with an input hole and an output hole connected to the housing; one end of the gear shaft is rotatably mounted on the housing through a bearing III, and the other end of the gear shaft is rotatably mounted in the input hole of the housing through a bearing IV; the gear I is mounted in the housing through a shaft I and meshes with the gear shaft, and the two ends of the shaft I are rotatably mounted on the housing through bearings V and VI respectively; The gear II is installed in the housing through shaft I and can rotate synchronously with gear I; the gear III is installed in the housing through shaft II and meshes with gear II, and the two ends of the shaft II are rotatably installed on the housing through bearings VII and VIII respectively; the gear IV is installed in the housing through an internal spline shaft and meshes with gear III, the smooth end of the internal spline shaft is rotatably installed on the housing through bearing IX, and the spline end of the internal spline shaft is rotatably installed in the output hole of the housing through bearing X; the end of the gear shaft located in the input hole of the housing is the input end of the reducer body.

[0008] Furthermore, the raised portion of the transparent cover is sealed and installed in the piston mounting section, and an O-ring I is installed between the raised portion of the transparent cover and the piston mounting section; the motor housing is sealed and installed in the recessed portion of the transparent cover, and an O-ring II is installed between the motor housing and the recessed portion of the transparent cover; the end face of the brake seat that intersects with the bearing mounting section is seal-mounted on the end face of the housing where an input hole is opened, and an O-ring III is installed between the brake seat and the housing; a skeleton oil seal I is installed between the center hole of the transparent cover and the input spline sleeve; star-shaped sealing rings and flat retaining rings are installed between the side walls of the large diameter section and the piston mounting section and between the small diameter section and the side walls of the friction plate mounting section; a magnetic screw plug is installed on the side wall of the brake seat corresponding to the friction plate mounting section.

[0009] Furthermore, the reducer body also includes a speed measuring mechanism; the speed measuring mechanism includes an encoder, a coupling and a connecting frame; the input shaft of the encoder is detachably mounted on shaft I through the coupling and can rotate synchronously with shaft I; the outer shell of the encoder is detachably mounted on the box through the connecting frame.

[0010] Furthermore, the reducer body also includes a three-stage planetary carrier transmission mechanism; the three-stage planetary carrier transmission mechanism includes sun gear I, inner gear ring I, planet gear I, planet carrier I, sun gear II, inner gear ring II, planet gear II, planet carrier II, sun gear III, planet gear III and planet carrier III; one end of the sun gear I is detachably mounted on the spline end of the inner spline shaft and can rotate synchronously with the inner spline shaft; the inner gear ring I is coaxially sleeved outside the sun gear I and is detachably mounted on the housing; the planet gear I is located between the sun gear I and the inner gear ring I and is meshed with the sun gear I and the inner gear ring I at the same time, and the planet gear I is rotatably mounted on the planetary gear mounting column of the planet carrier I; one end of the sun gear II is detachably mounted in the center hole of the planet carrier I, and the sun gear II can rotate with the rotation of the planet carrier I. The planet carrier I rotates synchronously; the inner gear ring II is arranged outside the sun gear II and is detachably mounted on the inner gear ring I; the planet gear II is located between the sun gear II and the inner gear ring II and is meshed with the sun gear II and the inner gear ring II at the same time, and the planet gear II is rotatably mounted on the planet gear mounting column of the planet carrier II; one end of the sun gear III is detachably mounted in the center hole of the planet carrier II, and the sun gear III can rotate synchronously with the planet carrier II; the sun gear III is arranged in the inner gear ring II; the planet gear III is located between the sun gear III and the inner gear ring II and is meshed with the sun gear III and the inner gear ring II at the same time, and the planet gear III is rotatably mounted on the planet gear mounting column of the planet carrier III; the planet carrier III is the output end of the reducer body, and the traveling mechanism of the tunnel boring machine can be synchronously driven by the planet carrier III.

[0011] Furthermore, the planet carrier III is rotatably mounted in the inner gear ring II via a sliding bearing; a plurality of oil grooves for storing lubricating oil are evenly distributed along the circumferential direction on the inner side wall of the sliding bearing.

[0012] Furthermore, the three-stage planetary carrier transmission mechanism also includes a shaft sleeve and a skeleton oil seal II; the shaft sleeve is detachably mounted on the side of the planetary carrier III through transition fit; the skeleton oil seal II is detachably mounted between the shaft sleeve and the inner gear ring II.

[0013] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, the existing braking device is modularized to obtain a modular braking mechanism, which is independent of the reducer body and the motor and can be easily removed from the reducer body and the motor, so that the present invention can quickly replace the modular braking mechanism under harsh working conditions underground, thereby reducing maintenance costs.

[0014] 2. In the present invention, when the modular brake mechanism needs to be put into a braking state, the piston applies pressure to the outer friction plate and the inner friction plate under the elastic force of the spring, so that the overlapping area of ​​the outer friction plate and the inner friction plate fits tightly, and under the friction force between the outer friction plate and the inner friction plate, the input spline sleeve and the inner friction plate remain circumferentially stationary together with the outer friction plate to achieve the braking function; when the braking state of the modular brake mechanism needs to be released, high-pressure oil is injected into the high-pressure oil chamber through the high-pressure oil inlet, thereby pushing the piston to move, and while compressing the spring, the pressure applied to the outer friction plate and the inner friction plate is released, prompting the outer friction plate to separate from the inner friction plate, so that the input spline sleeve and the inner friction plate can rotate, thereby achieving the release of the brake.

[0015] 3. In the present invention, the torque output by the motor is transmitted to the gear shaft through the input spline sleeve, and the gear shaft meshes with gear I on shaft I, thereby reducing the rotation speed while increasing the torque, and transmitting the torque to shaft I. Similarly, after the speed reduction and torque increase of gear II, gear III, shaft II, and gear IV, the torque is transmitted to the inner spline shaft; in addition, gear III is meshed with gear II and gear IV at the same time, which can significantly reduce the axial size of the present invention.

[0016] 4. In the present invention, O-rings I, II and III can prevent the leakage of lubricating oil in the brake seat; the skeleton oil seal I between the center hole of the transparent cover and the input spline sleeve replaces the end face seal of the motor in the prior art. When replacing the motor, there is no need to drain the lubricating oil in the brake seat and the housing of the reducer, which is convenient and quick, and can also prevent the lubricating oil from being contaminated; the star-shaped seal ring and the flat retaining ring between the side wall of the large diameter section and the piston mounting section and the star-shaped seal ring and the flat retaining ring between the side wall of the small diameter section and the friction plate mounting section can ensure the closure of the high-pressure oil chamber and prevent the leakage of high-pressure oil; the magnetic screw plug can be connected to the stepped cavity to absorb iron filings and impurities in the lubricating oil, and avoid wear and failure between the outer friction plate and the inner friction plate due to impurities being clamped.

[0017] 5. In the present invention, the encoder in the rotation speed measuring mechanism can measure the rotation speed of shaft I, providing a basis for better controlling the traveling state of the tunnel boring machine.

[0018] 6. In the present invention, the three-stage planetary carrier transmission mechanism adopts a planetary carrier III and a sliding bearing of a single-plate structure, which can guide and axially limit the planetary carrier III while meeting the large torque output requirement, and can also reduce the radial and axial dimensions of the present invention.

[0019] 7. In the present invention, when the planet carrier III rotates, the lubricating oil in the oil groove provides a better lubrication effect between the sliding bearing and the planet carrier III.

[0020] 8. In the present invention, the shaft sleeve and the skeleton oil seal II isolate the lubricating oil inside the three-stage planetary carrier transmission mechanism from the outside and prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 This is an overall structural diagram of a travel drive reducer for a tunnel boring machine in Example 1 of the present invention; Figure 2 This is an overall structural diagram of a modular brake mechanism in Example 1 of the present invention; Figure 3 It is a partial enlarged view of the planet carrier III and the inner gear ring II in Example 1 of the present invention; Figure 4 It is a partial enlarged view of the rotation speed measurement mechanism and the box body in Example 1 of the present invention; Figure 5 A top view of the pad in Example 1 of the present invention; Figure 6 is a cross-sectional view of the backing plate in Example 1 of the present invention; Figure 7 This is an external structural diagram of a traveling drive reducer of a tunnel boring machine in Example 1 of the present invention; In the figure: 1-transparent cover; 2-skeleton oil seal Ⅰ; 3-piston; 4-first screw; 5-outer friction plate; 6-brake seat; 7-inner friction plate; 8-input spline sleeve; 9-bearing Ⅳ; 10-box body; 11-bearing Ⅲ; 12-gear shaft; 13-gear Ⅰ; 14-bearing Ⅴ; 15-bearing Ⅵ; 16-shaft Ⅰ; 17-gear Ⅱ; 18-gear Ⅲ; 19-shaft Ⅱ; 20- Bearing VII; 21-Bearing VIII; 22-Gear IV; 23-Internal spline shaft; 24-Sun gear I; 25-Bearing IX; 26-Casing cover; 27-Planet gear I; 28-First-stage planetary gear bearing; 29-Planet carrier I; 30-Sun gear II; 31-Inner gear ring I; 32-Second-stage planetary gear bearing; 33-Planet gear II; 34-Inner gear ring II; 35-Planet carrier II; 36-Sun gear III; 37 -Planetary gear III; 38-Third-stage planetary gear bearing; 39-Skeleton oil seal II; 40-Bushing; 41-Sliding bearing; 42-Planet carrier III; 43-Skeleton oil seal III; 44-Connecting frame; 45-Coupling; 46-Encoder; 47-Second screw; 48-High-pressure oil inlet; 49-Pad; 50-Bearing I; 51-O-ring III; 52-Magnetic plug; 53-Star seal I; 54-Flat retaining ring I; 55-Star seal II; 56-Flat retaining ring II; 57-Spring; 58-Spring pad; 59-Bearing II; 60-O-ring I; 61-O-ring II; 62-Baffle; 63-Third screw; 64-Pin; 65-O-ring IV; 66-Fourth screw; 67-Coupling shaft; 68-Speed ​​measuring end cover; 69-Oil inlet groove; 70-Bearing X. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0030] Embodiment 1: like Figures 1 to 7 As shown, a travel drive reducer for a tunnel boring machine comprises a modular braking mechanism and a reducer body; the output end of the modular braking mechanism can rotate synchronously with the input end of the modular braking mechanism, the output end of the modular braking mechanism can be detachably mounted on the input end of the reducer body, and the input end of the reducer body can rotate synchronously with the output end of the modular braking mechanism; the output shaft of the motor is detachably mounted on the input end of the modular braking mechanism, the input end of the modular braking mechanism can rotate synchronously with the output shaft of the motor, the output end of the reducer body can be detachably mounted on the travel mechanism of the tunnel boring machine, and the travel mechanism of the tunnel boring machine can be synchronously driven by the output end of the reducer body.

[0031] In this embodiment, the modular brake mechanism includes a brake seat 6, a transparent cover 1, an input spline sleeve 8, an outer friction plate 5, an inner friction plate 7, a piston 3, a spring pad 58 and a spring 57; a stepped cavity is coaxially opened in the brake seat 6, and the stepped cavity includes a piston 3 mounting section, a friction plate mounting section and a bearing mounting section, the diameters of which decrease successively from one end of the stepped cavity to the other end of the stepped cavity; the transparent cover 1 is sealingly mounted on the end surface of the brake seat 6 intersecting with the piston 3 mounting section, and the transparent cover 1 is mounted on the brake seat 6 by a second screw 47; the input spline sleeve 8 is coaxially mounted in the stepped cavity, and the One end of the input spline sleeve 8 is rotatably mounted in the bearing mounting section via a bearing Ⅰ50, and the other end of the input spline sleeve 8 is rotatably mounted in the center hole of the transparent cover 1 via a bearing Ⅱ59; a plurality of outer friction plates 5 are installed at intervals on the side wall of the friction plate mounting section along the axial direction of the friction plate mounting section and can remain circumferentially stationary with the brake seat 6; a plurality of inner friction plates 7 are installed at intervals on the side wall of the input spline sleeve 8 along the axial direction of the input spline sleeve 8 and can rotate synchronously with the input spline sleeve 8; the outer friction plates 5 and the inner friction plates 7 are staggered along the axial direction of the brake seat 6 and have an overlapping area; the piston 3 is The pad 49 is arranged outside the input spline sleeve 8. The piston 3 includes a large diameter section and a small diameter section whose diameters decrease successively from one end of the piston 3 to the other end of the piston 3. The large diameter section is sealed and installed in the mounting section of the piston 3. The small diameter section is sealed and installed in the friction plate mounting section. A high-pressure oil chamber is formed between the large diameter section and the end surface of the mounting section of the piston 3 located in the brake seat 6. The brake seat 6 is provided with a high-pressure oil inlet 48 connected with the high-pressure oil chamber; the spring pad 58 is installed in the mounting section of the piston 3 and is located between the piston 3 and the transparent cover 1. The spring 57 is installed in a compressed state between the piston 3 and the spring pad 58; A pad 49 is installed in the friction plate mounting section, and the pad 49 is located directly above the inner friction plate 7 and the outer friction plate 5 and directly below the end surface where the friction plate mounting section intersects the bearing mounting section. The pad 49 is evenly distributed along its circumferential direction and is processed with six oil inlet grooves 69, which can increase the exchange area between the lubricating oil in the modular brake mechanism and the lubricating oil in the reducer body, so that the modular brake mechanism can be quickly cooled through heat exchange; the end of the input spline sleeve 8 located in the bearing mounting section is the output end of the modular brake mechanism, and the end of the input spline sleeve 8 located in the center hole of the transparent cover 1 is the input end of the modular brake mechanism.

[0032] In this embodiment, the reducer body includes a three-stage parallel transmission mechanism; the three-stage parallel transmission mechanism includes a box body, a gear shaft 12, a gear I13, a gear II17, a gear III18 and a gear IV22; the box body includes a box body 10 and a box cover 26, and the box body 10 is provided with an input hole and an output hole connected to the box body 10; one end of the gear shaft 12 is rotatably mounted on the box cover 26 through a bearing III11, and the other end of the gear shaft 12 is rotatably mounted in the input hole of the box body 10 through a bearing IV9; the gear I13 is installed in the box body through a shaft I16 and meshes with the gear shaft 12, and the two ends of the shaft I16 are rotatably mounted on the box body 1 through bearings V14 and VI15, respectively. 0 and the case cover 26; the gear II 17 is installed in the case through the shaft I 16 and can rotate synchronously with the gear I 13; the gear III 18 is installed in the case through the shaft II 19 and meshes with the gear II 17, and the two ends of the shaft II 19 are rotatably installed on the case cover 26 and the case body 10 through the bearing VII 20 and the bearing VIII 21 respectively; the gear IV 22 is installed in the case through the internal spline shaft 23 and meshes with the gear III 18, the smooth end of the internal spline shaft 23 is rotatably installed on the case cover 26 through the bearing IX 25, and the spline end of the internal spline shaft 23 is rotatably installed in the output hole of the case body 10 through the bearing X 70; the end of the gear shaft 12 located in the input hole of the case body 10 is the input end of the reducer body.

[0033] In this embodiment, the raised portion of the transparent cover 1 is sealed and installed in the piston 3 mounting section, and an O-type sealing ring I 60 is installed between the raised portion of the transparent cover 1 and the piston 3 mounting section; the motor housing is sealed and installed in the recessed portion of the transparent cover 1, and an O-type sealing ring II 61 is installed between the motor housing and the recessed portion of the transparent cover 1; the brake seat 6 and the box body are installed together by the first screw 4, and the end face of the brake seat 6 that intersects with the bearing mounting section is sealed and installed on the box body. On the end face of the hole, an O-ring III51 is installed between the brake seat 6 and the box body; a skeleton oil seal I2 is installed between the center hole of the transparent cover 1 and the input spline sleeve 8; a star-shaped sealing ring II55 and a flat retaining ring II56 are installed between the side wall of the large diameter section and the piston 3 mounting section, and a star-shaped sealing ring I53 and a flat retaining ring I54 are installed between the side wall of the small diameter section and the friction plate mounting section; a magnetic screw plug 52 is installed on the side wall of the brake seat 6 corresponding to the friction plate mounting section.

[0034] In this embodiment, the reducer body also includes a speed measuring mechanism; the speed measuring mechanism includes an encoder 46, a coupling 45 and a connecting frame 44; the input shaft of the encoder 46 is detachably mounted on the shaft I16 through the coupling 45 and can rotate synchronously with the shaft I16; the outer shell of the encoder 46 is detachably mounted on the box body 10 through the connecting frame 44.

[0035] Specifically, a speed measuring end cover 68 is provided at a position on the box body 10 corresponding to the shaft I16, and a coupling shaft 67 is coaxially installed on one end of the shaft I16 installed on the box body 10. The coupling shaft 67 is located in the center hole of the speed measuring end cover 68, and a skeleton oil seal III43 is installed between the coupling shaft 67 and the center hole of the speed measuring end cover 68 to prevent leakage of lubricating oil in the box body; the input shaft of the encoder 46 is detachably mounted on the coupling shaft 67 through the coupling 45.

[0036] In this embodiment, the reducer body also includes a three-stage planetary carrier transmission mechanism; the three-stage planetary carrier transmission mechanism includes a sun gear Ⅰ24, an inner gear ring Ⅰ31, a planetary gear Ⅰ27, a planetary carrier Ⅰ29, a sun gear Ⅱ30, an inner gear ring Ⅱ34, a planetary gear Ⅱ33, a planetary carrier Ⅱ35, a sun gear Ⅲ36, a planetary gear Ⅲ37 and a planetary carrier Ⅲ42; one end of the sun gear Ⅰ24 is detachably mounted on the spline end of the internal spline shaft 23 and can rotate synchronously with the internal spline shaft 23; the The inner gear ring Ⅰ31 is coaxially sleeved outside the sun gear Ⅰ24 and is detachably mounted on the housing; the planetary gear Ⅰ27 is located between the sun gear Ⅰ24 and the inner gear ring Ⅰ31 and is meshed with the sun gear Ⅰ24 and the inner gear ring Ⅰ31 at the same time. The planetary gear Ⅰ27 is rotatably mounted on the planetary gear mounting column of the planetary carrier Ⅰ29 through the primary planetary gear bearing 28; one end of the sun gear Ⅱ30 is detachably mounted in the center hole of the planetary carrier Ⅰ29, and the sun gear Ⅱ30 can be moved with the planetary carrier Ⅰ2 9 synchronous rotation; the inner gear ring II 34 is arranged outside the sun gear II 30 and is detachably mounted on the inner gear ring I 31; the planetary gear II 33 is located between the sun gear II 30 and the inner gear ring II 34 and is meshed with the sun gear II 30 and the inner gear ring II 34 at the same time, and the planetary gear II 33 is rotatably mounted on the planetary gear mounting column of the planetary carrier II 35 through the secondary planetary gear bearing 32; one end of the sun gear III 36 is detachably mounted in the center hole of the planetary carrier II 35, and the sun gear III 36 can rotate synchronously with the planet carrier II 35; the sun gear III 36 is arranged in the inner ring gear II 34; the planet gear III 37 is located between the sun gear III 36 and the inner ring gear II 34 and is meshed with the sun gear III 36 and the inner ring gear II 34 at the same time, and the planet gear III 37 is rotatably mounted on the planet gear mounting column of the planet carrier III 42 through the three-stage planet gear bearing 38; the planet carrier III 42 is the output end of the reducer body, and the walking mechanism of the tunnel boring machine can be synchronously driven by the planet carrier III 42.

[0037] Furthermore, the planet carrier III 42 is rotatably mounted in the inner gear ring II 34 via a sliding bearing 41 ; a plurality of oil grooves for storing lubricating oil are evenly distributed along the circumferential direction on the inner side wall of the sliding bearing 41 ; the sliding bearing 41 is mounted in the inner gear ring II 34 via a fourth screw 66 .

[0038] Furthermore, the three-stage planetary carrier transmission mechanism also includes a shaft sleeve 40 and a skeleton oil seal II 39; the shaft sleeve 40 is detachably mounted on the side of the planetary carrier III 42 through transition fit; the skeleton oil seal II 39 is detachably mounted between the shaft sleeve 40 and the inner gear ring II 34.

[0039] Specifically, it also includes a pin 64, a baffle 62 and a third screw 63. The shaft sleeve 40 is installed on the side of the planetary carrier III42. The pin 64 is used to prevent it from relative circumferential rotation with the planetary carrier III42. The baffle 62 is installed on the planetary carrier III42 by the third screw 63. The baffle 62 is located directly below the shaft sleeve 40 to prevent the shaft sleeve 40 from falling off. An O-ring IV65 is provided between the shaft sleeve 40 and the planetary carrier III42 to prevent oil leakage.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A traveling drive reducer for a tunnel boring machine, characterized in that: It includes a modular brake mechanism and a reducer body; The output end of the modular brake mechanism can rotate synchronously with the input end of the modular brake mechanism, the output end of the modular brake mechanism can be detachably mounted on the input end of the reducer body, and the input end of the reducer body can rotate synchronously with the output end of the modular brake mechanism; The output shaft of the motor is detachably mounted on the input end of the modular braking mechanism, and the input end of the modular braking mechanism can rotate synchronously with the output shaft of the motor. The output end of the reducer body can be detachably mounted on the traveling mechanism of the tunnel boring machine, and the traveling mechanism of the tunnel boring machine can be synchronously driven by the output end of the reducer body.

2. A traveling drive reducer for a tunnel boring machine according to claim 1, characterized in that: The modular brake mechanism comprises a brake seat (6), a transparent cover (1), an input spline sleeve (8), an outer friction plate (5), an inner friction plate (7), a piston (3), a spring pad (58) and a spring (57); A stepped cavity is coaxially formed in the brake seat (6), the stepped cavity comprising a piston (3) mounting section, a friction plate mounting section and a bearing mounting section, the diameters of which decrease successively from one end of the stepped cavity to the other end of the stepped cavity; The transparent cover (1) is sealingly mounted on an end surface of the brake seat (6) intersecting with the mounting section of the piston (3); The input spline sleeve (8) is coaxially mounted in the stepped cavity, one end of the input spline sleeve (8) is rotatably mounted in the bearing mounting section via a bearing I (50), and the other end of the input spline sleeve (8) is rotatably mounted in the center hole of the transparent cover (1) via a bearing II (59); A plurality of outer friction plates (5) are installed at intervals on the side wall of the friction plate installation section along the axial direction of the friction plate installation section and can remain circumferentially stationary with the brake seat (6); a plurality of inner friction plates (7) are installed at intervals on the side wall of the input spline sleeve (8) along the axial direction of the input spline sleeve (8) and can rotate synchronously with the input spline sleeve (8); the outer friction plates (5) and the inner friction plates (7) are staggered along the axial direction of the brake seat (6) and have an overlapping area; The piston (3) is coaxially sleeved outside the input spline sleeve (8), the piston (3) comprising a large diameter section and a small diameter section whose diameters decrease successively from one end of the piston (3) to the other end of the piston (3), the large diameter section being sealably mounted in the piston (3) mounting section, the small diameter section being sealably mounted in the friction plate mounting section, a high-pressure oil chamber being formed between the large diameter section and an end surface of the piston (3) mounting section located in the brake seat (6), the brake seat (6) being provided with a high-pressure oil inlet (48) communicating with the high-pressure oil chamber; The spring washer (58) is installed in the mounting section of the piston (3) and is located between the piston (3) and the transparent cover (1); the spring (57) is installed between the piston (3) and the spring washer (58) in a compressed state; One end of the input spline sleeve (8) located in the bearing mounting section is the output end of the modular brake mechanism, and one end of the input spline sleeve (8) located in the central hole of the transparent cover (1) is the input end of the modular brake mechanism.

3. The traveling drive reducer of a tunnel boring machine according to claim 1, characterized in that: The reducer body includes a three-stage parallel transmission mechanism; The three-stage parallel transmission mechanism comprises a housing, a gear shaft (12), a gear I (13), a gear II (17), a gear III (18) and a gear IV (22); The box body is provided with an input hole and an output hole which are in communication with the box body; One end of the gear shaft (12) is rotatably mounted on the housing via a bearing III (11), and the other end of the gear shaft (12) is rotatably mounted in the input hole of the housing via a bearing IV (9); The gear I (13) is mounted in the housing via shaft I (16) and meshes with the gear shaft (12); both ends of the shaft I (16) are rotatably mounted on the housing via bearing V (14) and bearing VI (15); The gear II (17) is installed in the housing via the shaft I (16) and can rotate synchronously with the gear I (13); The gear III (18) is mounted in the housing through the shaft II (19) and meshes with the gear II (17); the two ends of the shaft II (19) are rotatably mounted on the housing through the bearing VII (20) and the bearing VIII (21); The gear IV (22) is mounted in the housing via an internal spline shaft (23) and meshes with the gear III (18); the smooth end of the internal spline shaft (23) is rotatably mounted on the housing via a bearing IX (25); and the spline end of the internal spline shaft (23) is rotatably mounted in the output hole of the housing via a bearing X (70); One end of the gear shaft (12) located in the input hole of the box body is the input end of the reducer body.

4. A traveling drive reducer for a tunnel boring machine according to claim 3, characterized in that: The raised portion of the transparent cover (1) is sealingly mounted in the mounting section of the piston (3), and an O-type sealing ring I (60) is mounted between the raised portion of the transparent cover (1) and the mounting section of the piston (3); A motor housing is sealedly mounted in the recessed portion of the transparent cover (1), and an O-type sealing ring II (61) is mounted between the motor housing and the recessed portion of the transparent cover (1); The end face seal of the brake seat (6) intersecting with the bearing mounting section is mounted on the end face of the housing having an input hole, and an O-type sealing ring III (51) is mounted between the brake seat (6) and the housing; A skeleton oil seal I (2) is installed between the central hole of the transparent cover (1) and the input spline sleeve (8); A star-shaped sealing ring and a flat retaining ring are installed between the large diameter section and the side wall of the piston (3) mounting section and between the small diameter section and the side wall of the friction plate mounting section; A magnetic screw plug (52) is installed on the side wall of the brake seat (6) corresponding to the friction plate installation section.

5. The traveling drive reducer for a tunnel boring machine according to claim 3, characterized in that: The reducer body also includes a speed measuring mechanism; The rotation speed measuring mechanism comprises an encoder (46), a coupling (45) and a connecting frame (44); The input shaft of the encoder (46) is detachably mounted on the shaft I (16) via a coupling (45) and can rotate synchronously with the shaft I (16); The outer shell of the encoder (46) is detachably mounted on the box body via a connecting frame (44).

6. A traveling drive reducer for a tunnel boring machine according to claim 3, characterized in that: The reducer body also includes a three-stage planetary carrier transmission mechanism; The three-stage planetary carrier transmission mechanism comprises a sun gear I (24), an inner gear ring I (31), a planetary gear I (27), a planetary carrier I (29), a sun gear II (30), an inner gear ring II (34), a planetary gear II (33), a planetary carrier II (35), a sun gear III (36), a planetary gear III (37) and a planetary carrier III (42); One end of the sun gear I (24) is detachably mounted on the spline end of the internal spline shaft (23) and can rotate synchronously with the internal spline shaft (23); The inner gear ring I (31) is coaxially sleeved outside the sun gear I (24) and is detachably mounted on the housing; The planetary gear I (27) is located between the sun gear I (24) and the inner gear ring I (31) and meshes with the sun gear I (24) and the inner gear ring I (31) at the same time, and the planetary gear I (27) is rotatably mounted on the planetary gear mounting column of the planetary carrier I (29); One end of a sun gear II (30) is detachably mounted in the center hole of the planet carrier I (29), and the sun gear II (30) can rotate synchronously with the planet carrier I (29); The inner gear ring II (34) is arranged outside the sun gear II (30) and is detachably mounted on the inner gear ring I (31); The planetary gear II (33) is located between the sun gear II (30) and the inner gear ring II (34) and meshes with the sun gear II (30) and the inner gear ring II (34) at the same time. The planetary gear II (33) is rotatably mounted on the planetary gear mounting column of the planetary carrier II (35); One end of a sun gear III (36) is detachably mounted in the center hole of the planet carrier II (35), and the sun gear III (36) can rotate synchronously with the planet carrier II (35); The sun gear III (36) is arranged in the inner gear ring II (34); The planetary gear III (37) is located between the sun gear III (36) and the inner gear ring II (34) and is meshed with the sun gear III (36) and the inner gear ring II (34) at the same time. The planetary gear III (37) is rotatably mounted on a planetary gear mounting column of the planetary carrier III (42); The planet carrier III (42) is the output end of the reducer body, and the traveling mechanism of the tunnel boring machine can be synchronously driven by the planet carrier III (42).

7. A traveling drive reducer for a tunnel boring machine according to claim 6, characterized in that: The planet carrier III (42) is rotatably mounted in the inner gear ring II (34) via a sliding bearing (41); The inner side wall of the sliding bearing (41) is provided with a plurality of oil grooves evenly distributed along its circumferential direction for storing lubricating oil.

8. The traveling drive reducer for a tunnel boring machine according to claim 6, characterized in that: The three-stage planetary carrier transmission mechanism also includes a shaft sleeve (40) and a skeleton oil seal II (39); The shaft sleeve (40) is detachably mounted on the side surface of the planet carrier III (42) through transition fit; The skeleton oil seal II (39) is detachably mounted between the shaft sleeve (40) and the inner gear ring II (34).

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