Shaft sinking machine with a vibrating milling head

Abstract

The vertical shaft tunneling machine vibration type milling head disclosed in the application comprises a transversely arranged drum, drum mounting seats arranged on both sides of the drum, a sealing device arranged between the drum and the drum mounting seat, a hydraulic motor arranged inside the drum mounting seat, a vibration type speed reducer arranged at the output end of the hydraulic motor, and the output end of the vibration type speed reducer is connected with the drum, and the vibration type speed reducer is used for vibrating and rotating the drum. Compared with the prior art, the technical scheme disclosed in the application can improve the working efficiency of vertical shaft excavation, reduce the adhesion of clay to the milling head, and prolong the efficient operation time of the milling head.

Description

Technical Field

[0001] This application relates to the field of shaft excavation technology, and more specifically, to a vibratory milling head for a shaft excavator. Background Technology

[0002] Currently, with the urgent need for underground space engineering construction in my country, various shaft tunneling machines are widely used. As a new type of shaft construction equipment, the submerged shaft tunneling machine has unique technical advantages compared to existing equipment, including safety, high efficiency, small footprint, wide geological adaptability, and minimal impact on the surrounding environment. It is particularly suitable for use in large-diameter, deep shaft projects. The main working device of the submerged shaft tunneling machine is the milling head, primarily used for excavating soil and rock. Currently, the milling heads of existing submerged shaft tunneling machines both domestically and internationally are conventional rotary cutting types. Conventional rotary cutting milling heads are prone to becoming clogged with clay during operation, which can affect excavation efficiency; therefore, high-pressure water flushing is necessary.

[0003] At present, conventional rotary cutting milling heads have relatively low excavation efficiency in hard soil and rock layers. In response to this situation, relevant manufacturers and research institutions at home and abroad are exploring new working devices and new excavation methods.

[0004] Therefore, how to provide a vibratory milling head for a shaft tunneling machine that can improve the working efficiency of shaft excavation, reduce the adhesion of clay to the milling head, and extend the efficient working time of the milling head has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a vibratory milling head for a shaft tunneling machine, which can improve the working efficiency of shaft excavation, reduce the adhesion of clay to the milling head, and extend the efficient operation time of the milling head.

[0006] The technical solution provided in this application is as follows:

[0007] A vibratory milling head for a shaft boring machine includes: a horizontally placed drum; drum mounting seats disposed on both sides of the drum; a sealing device disposed between the drum and the drum mounting seats; a hydraulic motor disposed inside the drum mounting seats; and a vibratory reducer disposed at the output end of the hydraulic motor. The output end of the vibratory reducer is connected to the drum, and the vibratory reducer is used to vibrate and rotate the drum.

[0008] Furthermore, in a preferred embodiment of the invention, a protective cover is disposed on the side of the roller mounting base away from the roller, the protective cover being used to cover the roller mounting base.

[0009] Furthermore, in a preferred embodiment of the invention, a cover plate is provided at the end of the protective cover away from the roller mounting base.

[0010] Furthermore, in a preferred embodiment of the present invention, it further includes: a suction chamber that covers the outside of the roller and is disposed on the roller mounting base.

[0011] Furthermore, in a preferred embodiment of the present invention, a removable rear cover plate is provided on the cavity wall of the slurry suction chamber.

[0012] Furthermore, in a preferred embodiment of the present invention, a blade is provided below the lower panel of the suction chamber, the blade being used to scrape away the gravel and mud inside the shaft.

[0013] Furthermore, in a preferred embodiment of the present invention, the top of the suction chamber is provided with a connection port for connection to an external control arm; the connection port is provided with a shock-absorbing buffer sleeve.

[0014] Further, in a preferred embodiment of the present invention, the vibration reducer includes: a fixed mounting housing for fixed connection with the roller mounting base; an output rotary mounting housing that is rolled over the outside of the fixed mounting housing, the outside of the output rotary mounting housing being connected to the roller; a central drive shaft that is rolled between the fixed mounting housing and the output rotary mounting housing; a vibration eccentric mechanism disposed on the output rotary mounting housing for vibrating the output rotary mounting housing; and a planetary gear reduction transmission mechanism disposed on the central drive shaft for driving the output rotary mounting housing to rotate; the central drive shaft is used to drive the vibration eccentric mechanism and the planetary gear reduction transmission mechanism.

[0015] Furthermore, in a preferred embodiment of the present invention, the vibration eccentric mechanism includes: a first central gear disposed on the central transmission shaft; an eccentric hammer rotatably disposed on the output rotary mounting housing; and an eccentric hammer gear coaxially connected to the eccentric hammer, wherein the eccentric hammer gear meshes with the first central gear for transmission.

[0016] Furthermore, in a preferred embodiment of the present invention, the output rotary mounting housing is provided with a cavity for accommodating the eccentric hammer; the cavity is provided with a pressure plate for sealing the eccentric hammer; one end of the eccentric hammer is rotatably mounted at the bottom of the cavity; the other end of the eccentric hammer is rotatably mounted on the pressure plate and is gear-driven connected to the eccentric hammer.

[0017] Furthermore, in a preferred embodiment of the present invention, the eccentric hammer gear is connected to the eccentric hammer via a ratchet mechanism; one end of the eccentric hammer, which is rotatably mounted at the bottom of the cavity, passes through the output rotating mounting housing and communicates with the outside; the relative angle between the eccentric hammer and the eccentric hammer gear is adjustable.

[0018] Further, in a preferred embodiment of the present invention, the planetary gear reduction transmission mechanism includes: a second central gear disposed on the central transmission shaft; an intermediate gear disk rotatably disposed on the central transmission shaft and covering the outside of the second central gear; a first-stage planetary gear disposed on the intermediate gear disk and meshing with the second central gear; an outer gear ring disposed at the end of the intermediate gear disk away from the first-stage planetary gear; a second-stage planetary gear rotatably disposed on the output rotary mounting housing; and an inner gear ring disposed on the inner wall of the output rotary mounting housing; the second-stage planetary gear meshes with both the outer gear ring and the inner gear ring simultaneously.

[0019] Compared with existing technologies, this invention provides a technical solution for a vibratory milling head for a shaft boring machine. A hydraulic motor drives a drum mounted on a drum mounting base to rotate via a vibratory reducer. The cutter head on the drum crushes the excavation face, thereby enabling shaft excavation using a tunneling method. Furthermore, the vibratory reducer, in addition to its deceleration function, also outputs vibration, providing a simultaneous vibration and impact effect on the excavation face, thus improving excavation efficiency. Simultaneously, the vibration facilitates the removal of clay from the milling head, extending its efficient operating time. The technical solution provided by this application can improve the efficiency of shaft excavation, reduce clay adhesion to the milling head, and extend its efficient operating time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional view of the overall structure of the vibratory milling head of the shaft boring machine provided in an embodiment of the present invention;

[0022] Figure 2 This is a rear view of the overall structure of the vibratory milling head of the shaft boring machine provided in an embodiment of the present invention;

[0023] Figure 3 This is a cross-sectional view of the shock-absorbing buffer sleeve provided in an embodiment of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the shock-absorbing buffer sleeve provided in an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the overall structure of the vibration reducer provided in an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Hydraulic motor; 2. Vibratory reducer; 3. Drum; 4. Sealing device; 5. Drum mounting base; 6. Protective cover; 7. Cover plate; 8. Suction chamber; 9. Rear cover plate; 10. Blade plate; 11. Shock-absorbing buffer sleeve;

[0028] Fixed mounting housing 21; central drive shaft 22; first central gear 23; eccentric hammer gear 24; eccentric hammer 25; pressure plate 26; second central gear 27; first-stage planetary gear 28; transition gear 29; second-stage planetary gear 210; output rotating mounting housing 212. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0033] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0034] like Figures 1 to 5 As shown in the embodiment of this application, the vibratory milling head for a shaft boring machine includes: a horizontally placed drum 3; drum mounting seats 5 disposed on both sides of the drum 3; a sealing device 4 disposed between the drum 3 and the drum mounting seats 5; a hydraulic motor 1 disposed inside the drum mounting seats 5; and a vibratory reducer 2 disposed at the output end of the hydraulic motor 1. The output end of the vibratory reducer 2 is connected to the drum 3, and the vibratory reducer 2 is used to vibrate and rotate the drum 3.

[0035] Compared with existing technologies, this invention provides a technical solution for a vibratory milling head for a shaft boring machine. A hydraulic motor drives a drum mounted on a drum mounting base to rotate via a vibratory reducer. The cutter head on the drum crushes the excavation face, thereby enabling shaft excavation using a tunneling method. Furthermore, the vibratory reducer, in addition to its deceleration function, also outputs vibration, providing a simultaneous vibration and impact effect on the excavation face, thus improving excavation efficiency. Simultaneously, the vibration facilitates the removal of clay from the milling head, extending its efficient operating time. The technical solution provided by this application can improve the efficiency of shaft excavation, reduce clay adhesion to the milling head, and extend its efficient operating time.

[0036] Specifically, in a specific embodiment of the present invention, it further includes: a protective cover 6 disposed on the side of the roller mounting base 5 away from the roller 3, the protective cover 6 being used to cover the roller mounting base 5.

[0037] It should be noted that the protective cover reduces the amount of mud and dust entering the roller mounting base, extends the service life of the equipment, and facilitates installation and maintenance.

[0038] Specifically, in a specific embodiment of the present invention, a cover plate 7 is provided at the end of the protective cover 6 away from the roller mounting base 5.

[0039] Specifically, in a specific embodiment of the present invention, it further includes: a suction chamber 8 that covers the outside of the roller 3 and is disposed on the roller mounting base 5.

[0040] It should be noted that the suction chamber can directly remove the clay slurry that sticks to the milling head during the tunneling process, thus improving the efficiency of mud and sand removal.

[0041] Specifically, in a specific embodiment of the present invention, a detachable rear cover plate 9 is provided on the cavity wall of the slurry suction chamber 8.

[0042] It should be noted that the rear cover plate facilitates the installation and maintenance of the slurry suction chamber.

[0043] Specifically, in a specific embodiment of the present invention, a blade 10 is provided below the lower panel of the suction chamber 8, and the blade 10 is used to scrape the gravel and mud in the vertical shaft.

[0044] It should be noted that the cutter blade can scrape away the mud generated at the bottom of the shaft as the milling head rotates, thus improving the cleaning efficiency.

[0045] Specifically, in a specific embodiment of the present invention, the top of the suction chamber 8 is provided with a connection port for connecting to an external control arm; a shock-absorbing buffer sleeve 11 is provided on the connection port.

[0046] It should be noted that the shock-absorbing buffer sleeve can reduce the vibration effect of the vibration reducer on the external working mechanism and extend the overall service life.

[0047] Specifically, in a specific embodiment of the present invention, the vibration reducer 2 includes: a fixed mounting housing 21 for fixed connection with the roller mounting base 5; an output rotary mounting housing 212 that is rolled over the outside of the fixed mounting housing 21, the outside of the output rotary mounting housing 212 being connected to the roller 3; a central transmission shaft 22 that is rolled between the fixed mounting housing 21 and the output rotary mounting housing 212; a vibration eccentric mechanism disposed on the output rotary mounting housing 212 for vibrating the output rotary mounting housing 212; and a planetary gear reduction transmission mechanism disposed on the central transmission shaft 22 for driving the output rotary mounting housing 212 to rotate; the central transmission shaft 22 is used to drive the vibration eccentric mechanism and the planetary gear reduction transmission mechanism.

[0048] It should be noted that the fixed mounting housing is fixedly connected to the roller mounting base so that the central drive shaft can be better connected to the hydraulic motor. One end of the output rotating mounting housing is connected to the fixed mounting housing through a bearing cover. A planetary gear reduction transmission mechanism is set between the output rotating mounting housing and the fixed mounting housing, thereby enabling the vibration reducer to achieve the technical effect of speed reduction. Furthermore, the output rotating mounting housing is subjected to vibration through a vibration eccentric mechanism, thereby enabling the vibration reducer to output vibration.

[0049] Specifically, in a specific embodiment of the present invention, the vibration eccentric mechanism includes: a first central gear 23 disposed on the central transmission shaft 22; an eccentric hammer 25 rotatably disposed on the output rotary mounting housing 212; and an eccentric hammer gear 24 coaxially connected to the eccentric hammer 25, wherein the eccentric hammer gear 24 meshes with the first central gear 23 for transmission.

[0050] It should be noted that the central drive shaft drives the rotation of the first central gear, which in turn drives the rotation of the eccentric gear, and finally drives the rotation of the eccentric hammer. During the rotation of the eccentric hammer, the continuous change in the center of gravity causes the entire milling head's center of gravity to vibrate, ultimately resulting in the drum vibrating and improving the efficiency of tunneling and excavation.

[0051] Specifically, in a specific embodiment of the present invention, the output rotating mounting housing 212 is provided with a cavity for accommodating the eccentric hammer 25; the cavity is provided with a pressure plate 26 for sealing the eccentric hammer 25; one end of the eccentric hammer 25 is rotatably mounted at the bottom of the cavity; the other end of the eccentric hammer 25 is rotatably mounted on the pressure plate 26 and is connected to the eccentric hammer gear 24 for transmission.

[0052] It should be noted that the eccentric hammer is fixed by the cooperation between the pressure plate and the cavity.

[0053] Specifically, in a specific embodiment of the present invention, the eccentric hammer gear 24 is connected to the eccentric hammer 25 via a ratchet mechanism; the eccentric hammer 25 is rotatably mounted at one end at the bottom of the cavity and passes through the output rotating mounting housing 212 to communicate with the outside; the relative angle between the eccentric hammer 25 and the eccentric hammer gear 24 is adjustable.

[0054] Specifically, in a specific embodiment of the present invention, the planetary gear reduction transmission mechanism includes: a second central gear 27 disposed on the central transmission shaft 22; an intermediate gear disk 29 rotatably disposed on the central transmission shaft 22 and covering the outside of the second central gear 27; a first-stage planetary gear 28 disposed on the intermediate gear disk 29 and meshing with the second central gear 27; an outer gear ring disposed at one end of the intermediate gear disk 29 away from the first-stage planetary gear 28; a second-stage planetary gear 210 rotatably disposed on the output rotary mounting housing 212; and an inner gear ring disposed on the inner wall of the output rotary mounting housing 212; the second-stage planetary gear 210 simultaneously meshes with the outer gear ring and the inner gear ring.

[0055] It should be noted that, as shown in the figure, the vibratory milling head mainly includes a hydraulic motor 1, a vibratory reducer 2, a drum 3, a sealing device 4, a drum mounting base 5, a protective cover 6, a cover plate 7, a slurry suction chamber 8, a rear cover plate 9, a cutter plate 10, a shock-absorbing buffer sleeve 11, and corresponding connecting oil pipes and bolt fasteners.

[0056] Hydraulic motor 1 drives vibratory reducer 2, and the output of vibratory reducer 2 drives drum 3 to vibrate and rotate. The vibration and rotation of drum 3 can accelerate the excavation and stripping speed of hard soil and rock layers, while clay is less likely to stick to the drum.

[0057] The sealing device 4 mainly consists of a wear-resistant ring, an O-ring, a dust seal, a lip seal, and a sealing pressure plate. The drum mounting base 5 is connected to the vibratory reducer 2 and the slurry suction chamber 8 via corresponding bolts. The protective cover 6 is bolted onto the drum mounting base 5. The cover plate 7 is bolted onto the protective cover 6. The rear cover plate 9 and the cutter plate 10 are bolted onto the slurry suction chamber 8. The cutter plate 10 is forged from wear-resistant material and can cut through soil while also protecting the lower panel of the slurry suction chamber 8. The shock-absorbing buffer sleeve 11 is bolted between the milling head and the telescopic boom. The shock-absorbing buffer sleeve 11 effectively alleviates the problem of vibration from the milling head causing vibration throughout the entire shaft boring machine.

[0058] It should be noted that the shock-absorbing buffer sleeve 11 has a disc-shaped boss cap structure, which has a large buffer contact area and can also play a role in limiting movement around the perimeter.

[0059] It should be further explained that this article introduces a novel design for the milling head of a shaft boring machine (TBM) and a novel construction method for TBMs. By adding a new type of vibratory reducer to drive the milling head drum to vibrate and rotate, the excavation and stripping speed of hard soil and rock layers can be accelerated, thereby improving the excavation efficiency of the TBM in hard soil and rock layers. At the same time, the vibration of the drum can effectively improve the problem of the milling head of the TBM being easily clogged with clay, effectively improving the construction efficiency of the TBM.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibratory milling head for a vertical shaft tunneling machine, characterized in that, include: Horizontal roller (3); Roller mounting seats (5) are provided on both sides of the roller (3); A sealing device (4) is provided between the roller (3) and the roller mounting base (5); Hydraulic motor (1) installed inside the roller mounting base (5); Vibration reducer (2) installed at the output end of the hydraulic motor (1); The output end of the vibration reducer (2) is connected to the drum (3), and the vibration reducer (2) is used to vibrate and rotate the drum (3). The vibration reducer (2) includes: Fixed mounting housing (21) for fixed connection with the roller mounting base (5); A rolling cover is provided on the outside of the fixed mounting housing (21) of the output rotating mounting housing (212), and the outside of the output rotating mounting housing (212) is connected to the roller (3); A central drive shaft (22) is rolled between the fixed mounting housing (21) and the output rotating mounting housing (212). A vibration eccentric mechanism is provided on the output rotary mounting housing (212) for vibrating the output rotary mounting housing (212); A planetary gear reduction transmission mechanism is provided on the central drive shaft (22) for driving the output rotary mounting housing (212) to rotate; The central drive shaft (22) is used to drive the vibration eccentric mechanism and the planetary gear reduction transmission mechanism; The vibration eccentricity mechanism includes: The first central gear (23) is mounted on the central drive shaft (22); An eccentric hammer (25) is rotatably mounted on the output rotary mounting housing (212); An eccentric hammer gear (24) is coaxially connected to the eccentric hammer (25), and the eccentric hammer gear (24) meshes with the first center gear (23) for transmission.

2. The vibratory milling head for a shaft boring machine according to claim 1, characterized in that, Also includes: A cover (6) is provided on the side of the roller mounting base (5) away from the roller (3), the cover (6) being used to cover the roller mounting base (5).

3. The vibratory milling head for a shaft boring machine according to claim 2, characterized in that, The protective cover (6) is provided with a cover plate (7) at the end away from the roller mounting base (5).

4. The vibratory milling head for a shaft boring machine according to claim 1, characterized in that, Also includes: The suction chamber (8) is covered on the outside of the roller (3) and is provided on the roller mounting base (5).

5. The vibratory milling head for a shaft boring machine according to claim 4, characterized in that, The cavity wall of the suction chamber (8) is provided with a removable rear cover plate (9).

6. The vibratory milling head for a shaft boring machine according to claim 4, characterized in that, A blade (10) is provided below the lower panel of the suction chamber (8), and the blade (10) is used to scrape the gravel and mud in the vertical shaft.

7. The vibratory milling head for a shaft boring machine according to claim 4, characterized in that, The top of the suction chamber (8) is provided with a connection port for connecting to an external control arm; A shock-absorbing buffer sleeve (11) is provided on the connection port.

8. The vibratory milling head for a shaft boring machine according to claim 1, characterized in that, The planetary gear reduction transmission mechanism includes: The second central gear (27) is mounted on the central drive shaft (22). The transition gear (29) is rotatably mounted on the central drive shaft (22) and covers the outside of the second central gear (27). The transition gear plate (29) is provided with a first-stage planetary gear (28) that meshes with the second central gear (27). An external gear ring is disposed at the end of the transition gear plate (29) away from the first-stage planetary gear (28); A secondary planetary gear (210) is rotatably mounted on the output rotary mounting housing (212). An internal gear ring is disposed on the inner wall of the output rotary mounting housing (212); The secondary planetary gear (210) simultaneously meshes with the outer gear ring and the inner gear ring for transmission.

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