Traveling driving speed reducer output device of heading machine

Abstract

The utility model provides an output device of a traveling driving speed reducer of a heading machine. The output device comprises a single-plate planet carrier, a gear ring, a planet wheel, a sun wheel, a sliding bearing and a shaft sleeve, a plurality of planet wheel mounting columns are arranged on the surface of one side of the single-plate type planet carrier in the circumferential direction. Each planet wheel mounting column is rotationally provided with one planet wheel through a planet wheel bearing. The planet gear is respectively meshed with the inner teeth of the gear ring and the sun gear; the single-plate planet carrier is rotationally mounted in an inner hole of the gear ring through a sliding bearing; the sliding bearing is fixedly mounted on the gear ring; the shaft sleeve is detachably installed on the side face of the front end of the single-plate type planet carrier. An outer spigot is formed in the side face of the single-plate type planet carrier, and the sliding bearing is located between the outer spigot and the shaft sleeve. Under the condition that the installation form and the appearance size of the speed reducer are not changed, the large torque output and sealing requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, and in particular to an output device of a travel drive reducer for a tunnel boring machine. Background Art

[0002] The roadheader is an integrated fast-moving equipment designed to speed up tunnel excavation. It is used in harsh conditions and has high requirements for the reliability and service life of each component. The travel reducer is the core component of the roadheader. Its function is to control the forward, turning and backward movement of the roadheader by driving the crawler. It has the characteristics of high input speed, large transmission ratio, large output torque, and limited axial and radial installation space. In addition, since the roadheader works in an underground environment with harsh working conditions, it has high requirements for the sealing of the output structure.

[0003] The output torque of the planetary carrier of the travel reducer is very large, so multiple planetary gears are needed to divert the torque. However, under the same radial installation size and speed ratio, the existing double-plate planetary carrier can only use 3-5 planetary gears, which limits the output torque. At the same time, the gear meshing will produce a large radial load and axial force on the planetary carrier, which will increase the misalignment between the planetary carrier and the gear ring and cause seal failure. Therefore, it is necessary to install bearings at the output end of the planetary carrier to guide and limit the planetary carrier to the left and right. However, due to the limitations of the radial and axial dimensions of the travel reducer, rolling bearings cannot be arranged. Utility Model Content

[0004] According to the above technical problems existing in the planetary frame of the existing travel reducer, an output device of the travel drive reducer of a tunnel boring machine is provided, which can meet the requirements of large torque output and sealing without changing the installation form and external dimensions of the reducer.

[0005] The technical means adopted by the utility model are as follows:

[0006] A travel drive reducer output device for a tunnel boring machine comprises a single-plate planet carrier, a gear ring, a planetary gear, a sun gear, a sliding bearing and a shaft sleeve;

[0007] A plurality of planetary gear mounting columns are circumferentially arranged on one side surface of the single-plate planet carrier; a planetary gear is rotatably mounted on each of the planetary gear mounting columns through a planetary gear bearing; the sun gear is located at the center of the single-plate planet carrier, and the planetary gears are respectively meshed with the inner teeth of the gear ring and the sun gear;

[0008] The single-plate planet carrier is rotatably mounted on the inner hole of the gear ring through a sliding bearing; the sliding bearing is fixedly mounted on the gear ring; and there is a clearance fit between the sliding bearing and the single-plate planet carrier;

[0009] The shaft sleeve is detachably mounted on the front side of the single-plate planetary carrier through transition fit; a skeleton oil seal is installed between the outer side of the shaft sleeve and the inner hole of the gear ring;

[0010] An outer stop is arranged on the side of the single-plate planet carrier, and the sliding bearing is located between the outer stop and the shaft sleeve.

[0011] Furthermore, it comprises 7 planetary gears, and 7 planetary gear mounting columns are arranged on the single-plate planetary carrier.

[0012] Furthermore, a plurality of evenly distributed oil grooves are provided on the inner side wall of the sliding bearing for storing lubricating oil.

[0013] Furthermore, the sliding bearing is fixedly mounted on the outer stop of the gear ring by means of screws.

[0014] Furthermore, a baffle is fixedly mounted on the front end side of the single-plate planetary carrier, and the baffle is located on the front side of the shaft sleeve and partially fits with the shaft sleeve.

[0015] Furthermore, an O-ring is installed between the shaft sleeve and the single-plate planetary carrier.

[0016] Furthermore, a saddle pin is installed at the connection between the shaft sleeve and the single-plate planetary carrier.

[0017] Furthermore, a threaded hole is provided on the end surface of the shaft sleeve for installing a pulling bolt when the shaft sleeve is disassembled.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. The travel drive reducer output device of the tunnel boring machine provided by the utility model adopts a single-plate planetary carrier output mode, and can use 7 planetary gears to achieve high torque output without changing the installation form of the reducer or increasing the outer dimensions of the reducer.

[0020] 2. The output device of the travel drive reducer of the tunnel boring machine provided by the utility model adopts a radial sliding bearing support to guide and limit the planetary frame, thereby ensuring the sealing reliability of the oil seal, and has a compact size and a large load-bearing capacity. The prior art adopts two rolling bearing supports, which occupies a large space.

[0021] 3. The output device of the travel drive reducer of the tunnel boring machine provided by the utility model has a separate design of the sleeve and the planetary carrier, which limits the sleeve and simplifies the installation. It only needs to harden the sleeve. When damage occurs, only the sleeve can be replaced, reducing the heat treatment and maintenance costs.

[0022] 4. The output device of the travel drive reducer of the tunnel boring machine provided by the utility model arranges a skeleton oil seal between the planet carrier and the gear ring to isolate the internal cavity of the reducer from the cavity of the tunnel boring machine. When replacement and maintenance are required, only the reducer needs to be disassembled, which has no effect on the tunnel boring machine.

[0023] Based on the above reasons, the utility model can be widely promoted in the field of reducers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a cross-sectional view of the output device of the utility model.

[0026] Figure 2 for Figure 1 Enlarged view of part II.

[0027] Figure 3 This is a schematic diagram of the single-plate planetary carrier structure of the utility model.

[0028] Figure 4 This is a schematic diagram of the sliding bearing structure of the utility model.

[0029] Figure 5 This is a schematic diagram of the structure of the output device of the utility model.

[0030] In the figure: 1. Single-plate planet carrier; 2. Ring gear; 3. Planet gear; 4. Planet gear bearing; 5. Sun gear; 6. Sliding bearing; 7. Framework oil seal; 8. Bushing; 9. O-ring; 10. Saddle pin; 11. Screw; 12. Baffle; 13. External stop; 14. Planet gear mounting column; 15. Oil tank. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention 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.

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. 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 "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present utility model, it needs to be understood 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 utility model and simplifying the description. Unless otherwise stated, 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 utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] 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.

[0037] 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 utility model.

[0038] like Figure 1-5 As shown, the utility model provides a travel drive reducer output device for a tunnel boring machine, comprising a single-plate planet carrier 1, a gear ring 2, a planetary gear 3, a sun gear 5, a sliding bearing 6 and a shaft sleeve 8;

[0039] A plurality of planetary gear mounting columns 14 are circumferentially arranged on one side surface of the single-plate planet carrier 1; a planetary gear 3 is rotatably mounted on each of the planetary gear mounting columns 14 via a planetary gear bearing 4; the sun gear 5 is located at the center of the single-plate planet carrier 1, and the planetary gear 3 is meshed with the inner teeth of the gear ring 2 and the sun gear 5 respectively;

[0040] The single-plate planet carrier 1 is rotatably mounted in the inner hole of the gear ring 2 through a sliding bearing 6; the sliding bearing 6 is fixedly mounted on the gear ring 2 through a high-strength screw 11, and the sliding bearing 6 and the gear ring 2 do not rotate relative to each other; there is a clearance fit between the sliding bearing 6 and the single-plate planet carrier 1; the single-plate planet carrier 1 adopts the support type of the sliding bearing 6, which can greatly reduce the radial size of the output structure;

[0041] The shaft sleeve 8 is detachably mounted on the front end side of the single-plate planet carrier 1 through transition fit; a skeleton oil seal 7 is installed between the outer side of the shaft sleeve 8 and the inner hole of the gear ring 2, and the outer cylindrical surface of the shaft sleeve 8 is in contact with the lip of the skeleton oil seal 7, and the skeleton oil seal 7 is used to isolate the lubricating oil inside the reducer housing from the outside to prevent leakage; the shaft sleeve 8 and the single-plate planet carrier 1 are designed to be separated, so that the single-plate planet carrier 1 can be installed with the sliding bearing 6, and only the shaft sleeve 8 is hardened. When damage occurs, only the shaft sleeve 8 needs to be replaced, which can reduce the heat treatment and maintenance costs;

[0042] An external stop 13 is provided on the side of the single-plate planetary carrier 1, and the sliding bearing 6 is located between the external stop 13 and the shaft sleeve 8; the shaft sleeve 8 and the sliding bearing 6 can axially limit the single-plate planetary carrier 1 to prevent axial movement during rotation; the sliding bearing 6 can also ensure the coaxiality of the single-plate planetary carrier 1 and the skeleton oil seal 7.

[0043] Furthermore, it includes 7 planetary gears 3, and 7 planetary gear mounting columns 14 are arranged on the single-plate planetary carrier 1. The single-plate planetary carrier 1 described in the present application adopts a single-plate planetary carrier structure, which greatly reduces the axial dimension of the output structure. At the same time, it can also increase the arrangement space of the planetary gears 3, so that the number of the planetary gears 3 is increased to 7. Compared with the existing double-plate planetary carrier that can only install 3-5 planetary gears, it can reduce the radial and axial dimensions while meeting the large torque output.

[0044] Furthermore, a plurality of evenly distributed oil grooves 15 are provided on the inner side wall of the sliding bearing 6 for storing lubricating oil. When the single-plate planetary carrier 1 rotates, the lubricating oil in the oil grooves 15 provides better lubrication effect between the sliding bearing 6 and the single-plate planetary carrier 1.

[0045] Furthermore, the sliding bearing 6 is fixedly mounted on the outer stop of the gear ring 2 by means of the 24 screws 11 , so as to limit the axial position of the single-plate planetary carrier 1 and prevent the sliding bearing 6 from rotating relative to the gear ring 2 .

[0046] Furthermore, in order to prevent deformation of the sliding bearing 6 during the processing, an outer circle of the sliding bearing 6 and an inner hole of the gear ring 2 are interference fit.

[0047] Furthermore, a baffle 12 is fixedly installed on the front end side of the single-plate planetary carrier 1 by screws. The baffle 12 is located in front of the shaft sleeve 8 and partially fits with the shaft sleeve 8 to limit the axial position of the shaft sleeve 8.

[0048] Furthermore, an O-ring 9 is installed between the shaft sleeve 8 and the single-plate planetary carrier 1 to prevent oil leakage at the fitting point between the shaft sleeve 8 and the single-plate planetary carrier 1 .

[0049] Furthermore, in order to prevent the shaft sleeve 8 and the single-plate planetary carrier 1 from rotating relative to each other, two saddle pins 10 are installed at the connection between the shaft sleeve 8 and the single-plate planetary carrier 1 .

[0050] Furthermore, a threaded hole is provided on the end surface of the shaft sleeve 8 for installing a pulling bolt when the shaft sleeve 8 is disassembled.

[0051] When using the tunnel boring machine travel drive reducer output device described in the present application, the ring gear 2 serves as a part of the travel reducer housing, and the travel reducer is installed in the tunnel boring machine travel drive system by bolts; the sun gear 5 is connected to the planetary carrier of the upper-level planetary structure in the reducer housing, and can receive the torque transmitted from the upper-level planetary structure, and then transmits the torque to the single-plate planetary carrier 1 through the internal and external meshing between the sun gear 5 and the planetary gear 3 and between the planetary gear 3 and the ring gear 2, and transmits it to the tunnel boring machine travel drive system through the internal spline of the single-plate planetary carrier 1. When the reducer is running, the baffle 12, the shaft sleeve 8 and the single-plate planetary carrier 1 can rotate together.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A traveling drive reducer output device for a tunnel boring machine, characterized in that: It comprises a single-plate planet carrier (1), a ring gear (2), a planetary gear (3), a sun gear (5), a sliding bearing (6) and a shaft sleeve (8); A plurality of planetary gear mounting columns (14) are circumferentially arranged on one side surface of the single-plate planetary carrier (1); a planetary gear (3) is rotatably mounted on each of the planetary gear mounting columns (14) via a planetary gear bearing (4); the sun gear (5) is located at the center of the single-plate planetary carrier (1), and the planetary gear (3) is respectively meshed with the inner teeth of the gear ring (2) and the sun gear (5); The single-plate planet carrier (1) is rotatably mounted on the inner hole of the gear ring (2) via a sliding bearing (6); the sliding bearing (6) is fixedly mounted on the gear ring (2); and there is a clearance fit between the sliding bearing (6) and the single-plate planet carrier (1); The shaft sleeve (8) is detachably mounted on the front end side of the single-plate planetary carrier (1) through transition fit; a skeleton oil seal (7) is installed between the outer side of the shaft sleeve (8) and the inner hole of the gear ring (2); An outer stop (13) is provided on the side of the single-plate planet carrier (1), and the sliding bearing (6) is located between the outer stop (13) and the shaft sleeve (8).

2. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: It comprises seven planetary wheels (3), and seven planetary wheel mounting columns (14) are arranged on the single-plate planetary frame (1).

3. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: The inner wall of the sliding bearing (6) is provided with a plurality of evenly distributed oil grooves (15) for storing lubricating oil.

4. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: The sliding bearing (6) is fixedly mounted on the outer stop of the gear ring (2) by means of screws (11).

5. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: A baffle plate (12) is also fixedly mounted on the front end side of the single-plate planetary carrier (1); the baffle plate (12) is located on the front side of the shaft sleeve (8) and partially fits with the shaft sleeve (8).

6. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: An O-type sealing ring (9) is installed between the shaft sleeve (8) and the single-plate planet carrier (1).

7. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: A saddle pin (10) is installed at the connection between the shaft sleeve (8) and the single-plate planet carrier (1).

8. The traveling drive reducer output device of the tunnel boring machine according to claim 1, characterized in that: The end surface of the shaft sleeve (8) is provided with a threaded hole for installing a pulling bolt when the shaft sleeve (8) is disassembled.

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