Braking device for traveling driving speed reducer of heading machine

Abstract

The utility model provides a brake device of a traveling driving speed reducer of a heading machine. The brake device comprises a transparent cover, a brake seat, a piston, an inner friction plate, an outer friction plate, an input spline housing, a spring and a spring base plate, an axial stepped cavity is formed in the center of the brake base and comprises a piston mounting section, a friction plate mounting section and a bearing mounting section; a plurality of outer friction plates are mounted on the side wall of the friction plate mounting section at intervals in the axial direction; the multiple inner friction plates are installed outside the input spline sleeve in the axial direction at intervals. The outer friction plates and the inner friction plates are arranged in a staggered mode in the axial direction of the brake base and are provided with overlapping areas. A high-pressure oil cavity is formed between the large-diameter section of the piston and the friction plate mounting section platform; and the piston is tightly attached to the outer friction plate or the inner friction plate close to one side of the piston mounting section. According to the technical scheme, the problems that an existing brake device is inconvenient to maintain and poor in heat dissipation effect are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to walking reduction mechanism technical field, specifically, especially, a kind of walking driving reduction mechanism brake device of tunneling machine. BACKGROUND

[0002] Walking reduction mechanism is the core component of excavating anchor machine, and its function is to control the advance, steering and reverse of tunneling machine by driving track. The static braking of excavating anchor machine is realized by the brake device of walking reduction mechanism input end. Since excavating anchor machine works underground, the site environment is poor, if brake device fails and needs maintenance, the reduction mechanism needs to be disassembled, and then brake device is removed part by part to troubleshoot and repair, limited by the site operation environment, the disassembly of reduction mechanism and brake is very difficult or even impossible. At the same time, the bearing rotating at high speed isolates the internal space of brake from the reduction mechanism box, forming a closed small cavity, and the large amount of heat generated by oil stirring of friction disc cannot be dissipated in time through the circulation of lubricating oil, resulting in rapid temperature rise of brake device in a short time, which leads to the failure of the whole walking driving device. SUMMARY

[0003] In view of the above technical problems of inconvenient maintenance and poor heat dissipation effect of brake device in existing reduction mechanism, a walking driving reduction mechanism brake device of tunneling machine is provided, which can be conveniently replaced and maintained quickly from walking driving reduction mechanism, and at the same time solve the problem that the walking driving reduction mechanism cannot work for a long time due to the overhigh and rapid temperature rise of brake device.

[0004] The technical means adopted by the utility model are as follows:

[0005] A walking driving reduction mechanism brake device of tunneling machine, comprising a transparent cover, a brake seat, a piston, an inner friction plate, an outer friction plate, an input spline sleeve, a spring and a spring pad;

[0006] One end of the brake seat is detachably installed on the reduction mechanism box; the transparent cover is located at the other end of the brake seat;

[0007] The brake seat is provided with an axial stepped cavity in the center, and the stepped cavity comprises a piston mounting section, a friction plate mounting section and a bearing mounting section, whose diameters decrease in turn from one end connected to the transparent cover to the other end;

[0008] The transparent cover is fixedly connected with the brake seat and is sealingly installed in the piston mounting section through the protruding part provided on one side surface;

[0009] The input spline sleeve is axially installed in the stepped cavity, and one end is rotatably installed in the bearing mounting section through bearing I, and the other end penetrates the piston and is rotatably installed in the center hole of the transparent cover through bearing II;

[0010] A plurality of outer friction plates are axially spaced apart and mounted on the side wall of the friction plate mounting section, and can be kept circumferentially stationary relative to the brake seat; a plurality of inner friction plates are axially spaced apart and mounted on the outer side of the input spline sleeve, and can rotate synchronously with the input spline sleeve; the outer friction plates and the inner friction plates are axially staggered relative to the brake seat, and have an overlapping area;

[0011] The large-diameter section of the piston is sealingly mounted on the piston mounting section, and the small-diameter section is sealingly mounted on the friction plate mounting section; a high-pressure oil cavity is formed between the large-diameter section of the piston and the platform of the friction plate mounting section, and the brake seat is provided with a high-pressure oil inlet connected to the high-pressure oil cavity; the piston is tightly attached to the outer friction plate or the inner friction plate close to the piston mounting section;

[0012] The spring pad is mounted in the piston mounting section between the piston and the transparent cover; and the spring is mounted in a compressed state between the piston and the spring pad.

[0013] Further, an O-shaped sealing ring I is mounted between the protruding portion of the transparent cover and the piston mounting section; an O-shaped sealing ring II is mounted on the end of the transparent cover for connection to the motor; and an O-shaped sealing ring III is mounted on the end of the brake seat for connection to the reducer box;

[0014] A skeleton oil seal is mounted in the central hole of the transparent cover;

[0015] Star-shaped sealing rings and flat rings are respectively mounted between the piston and the side walls of the piston mounting section and the friction plate mounting section;

[0016] A plurality of oil injection magnetic screw plugs are mounted on the side wall of the brake seat corresponding to the friction plate mounting section.

[0017] Further, a plurality of oil return holes are formed in the end of the brake seat connected to the reducer box and connected to the stepped cavity.

[0018] Further, a pad is mounted between the outer friction plate or the inner friction plate close to the bearing mounting section and the platform of the bearing mounting section; and an oil inlet groove is formed in the pad corresponding to the oil return hole.

[0019] Further, the spring is mounted in the mounting hole on the piston.

[0020] Further, a high-pressure oil inlet connector is mounted on the high-pressure oil inlet.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. The walking driving speed reducer brake device of the tunneling machine provided by the utility model can modularize the brake device, can be quickly replaced under the poor working condition in the mine, and reduces the maintenance cost; the oil return holes arranged between the brake seat and the box body increase the quick exchange of the lubricating oil in the brake device and the lubricating oil in the speed reducer, benefit the heat dissipation of the brake device, so that the walking driving speed reducer can continuously and stably work for a long time; the spring load transmitted from the spring pad plate is borne by the transparent cover, and the utility model is more safe and reliable.

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

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained according to these drawings without the creative labor of the person skilled in the art.

[0025] Fig. 1 It is the installation position schematic view of the brake device in the speed reducer.

[0026] Fig. 2 It is the structure schematic view of the brake device.

[0027] Fig. 3 It is the pad plate structure schematic view.

[0028] In the drawing: 1, screw I; 2, transparent cover; 3, high-pressure oil inlet joint; 4, brake seat; 5, piston; 6, outer friction plate; 7, inner friction plate; 8, pad plate; 81, oil inlet groove; 9, bearing I; 10, input spline sleeve; 11, O-shaped sealing ring I; 12, O-shaped sealing ring II; 13, screw II; 14, oil injection and discharge magnetic screw plug; 15, star-shaped sealing ring I; 16, flat baffle I; 17, star-shaped sealing ring II; 18, flat baffle II; 19, spring; 20, spring pad plate; 21, bearing II; 22, skeleton oil seal; 23, O-shaped sealing ring III; 24, oil return hole; 25, speed reducer; 26, brake device; 27, motor. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] 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 described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] 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, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or their combination.

[0032] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not meant to limit the scope of the present utility model. At the same time, it should be clear that the size of each part shown in the drawings is not drawn in proportion for the sake of description. The technology, method and equipment known to those skilled in the relevant art may not be discussed in detail, but under appropriate circumstances, the technology, method and equipment should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference 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.

[0033] In the description of the utility model, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the utility model: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0034] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0035] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0036] Example 1

[0037] like Figs. 1-3 As shown, this utility model provides a braking device 26 for a tunneling machine travel drive reduction mechanism, including a cover 2, a brake seat 4, a piston 5, an inner friction plate 7, an outer friction plate 6, an input spline sleeve 10, a spring 19, and a spring washer 20.

[0038] One end of the brake seat 4 is detachably mounted to the gearbox 25 housing via screw II 13; when the brake device 26 fails, the entire brake device can be replaced simply by removing screw II 13, resulting in significantly lower maintenance costs in harsh downhole working environments; the through cover 2 is located at the other end of the brake seat 4; the motor 27 of the gearbox can be mounted on the through cover 2.

[0039] The brake seat 4 has an axial stepped cavity at its center. The stepped cavity includes a piston mounting section, a friction plate mounting section, and a bearing mounting section whose diameters decrease sequentially from one end connected to the cover 2 to the other end.

[0040] The cover 2 is fixedly connected to the brake seat 4 and is sealed to the piston mounting section by a protrusion on one side surface;

[0041] The input spline sleeve 10 is axially installed in the stepped cavity, and one end is rotatably installed in the bearing installation section through bearing I 9, and the other end penetrates the piston 5 and is rotatably installed in the central hole of the transparent cover 2 through bearing II 21; the bearing I 9 and the bearing II 21 can provide guiding and supporting for the input spline sleeve 10;

[0042] The inner friction plate 7 and the outer friction plate 6 are located in the friction plate installation section; a plurality of outer friction plates 6 are axially spaced and installed on the side wall of the friction plate installation section, and the outer friction plate 6 can be kept circumferentially stationary with the brake seat 4, that is, no rotation occurs; a plurality of inner friction plates 7 are axially spaced and installed on the outer surface of the input spline sleeve 10, and the inner friction plate 7 can rotate synchronously with the input spline sleeve 10; the outer friction plate 6 and the friction plate installation section side wall and the inner friction plate 7 and the outer surface of the input spline sleeve 10 are connected through inner and outer spline structures respectively; the outer friction plate 6 and the inner friction plate 7 are axially staggered along the brake seat 4 and have an overlapping area;

[0043] The large-diameter section of the piston 5 is sealingly installed in the piston installation section, and the small-diameter section is sealingly installed in the friction plate installation section; the large-diameter section of the piston 5 and the platform of the friction plate installation section form a high-pressure oil cavity, and the brake seat 4 is provided with a high-pressure oil inlet communicating with the high-pressure oil cavity; the piston 5 is tightly attached to the outer friction plate 6 or the inner friction plate 7 close to the piston installation section under the action of the spring 19;

[0044] The spring pad 20 is installed in the piston installation section and located between the piston 5 and the transparent cover 2; the spring 19 is installed in a compressed state between the piston 5 and the spring pad 20; the transparent cover 2 and the spring pad 20 support the spring 19.

[0045] When the brake device 26 is in a braking state, the piston 5 applies pressure to the contacting friction plate under the elastic force of the spring 19, so that the overlapping area of the outer friction plate 6 and the inner friction plate 7 is tightly attached, and the input spline sleeve 10 and the inner friction plate 7 remain circumferentially stationary with the outer friction plate 6 under the friction force between the outer friction plate 6 and the inner friction plate 7, realizing the braking function;

[0046] When the brake needs to be released, high-pressure oil can be injected into the high-pressure oil cavity through the high-pressure oil inlet, thereby pushing the piston 5 to move, releasing the pressure applied to the outer friction plate 6 or the inner friction plate 7, and promoting the separation of the outer friction plate 6 and the inner friction plate 7, which can rotate synchronously with the input spline sleeve 10.

[0047] Further, an O-shaped sealing ring I 11 is mounted between the protruding part of the transparent cover 2 and the piston mounting section; an O-shaped sealing ring II 12 is mounted at one end of the transparent cover 2 for connecting to the motor 27; an O-shaped sealing ring III 23 is mounted at one end of the brake seat 4 for connecting to the reducer 25 box; the O-shaped sealing ring I 11, the O-shaped sealing ring II 12, and the O-shaped sealing ring III 23 are used to further prevent leakage of lubricating oil;

[0048] A skeleton oil seal 22 is mounted in the central hole of the transparent cover 2, instead of the end face sealing of the previous motor, so that when the motor 27 is replaced, the lubricating oil in the brake device 26 and the reducer 25 does not need to be emptied, which is convenient and fast, and avoids contamination of the lubricating oil; the input spline sleeve 10 is supported and guided by two bearings, which can ensure the coaxiality of the input spline sleeve 10 and the skeleton oil seal 22, and avoid oil leakage caused by failure of the skeleton oil seal 22;

[0049] Star-shaped sealing rings and flat rings are respectively mounted between the piston 5 and the sidewalls of the piston mounting section and the friction plate mounting section, which ensure the sealing of the high-pressure oil cavity and prevent leakage of high-pressure oil; mounting grooves for mounting the star-shaped sealing rings and the flat rings are arranged on the sidewalls of the piston mounting section and the friction plate mounting section, which facilitates machining and ensures machining precision, thereby ensuring sealing effect; star-shaped sealing ring II 17Ⅱ and flat ring II 18 are combined and used for sealing between the piston 5 and the sidewall of the piston mounting section; star-shaped sealing ring I 15 and flat ring I 16 are combined and used for sealing between the piston 5 and the sidewall of the friction plate mounting section;

[0050] A plurality of oil injection magnetic screw plugs 14 are mounted on the sidewall of the brake seat 4 corresponding to the friction plate mounting section, which can be connected to the stepped cavity and used for adsorbing iron filings in lubricating oil, thereby avoiding wear and failure of the friction plates due to the interposition of impurities.

[0051] Further, a plurality of oil return holes 24 connected to the stepped cavity are arranged at one end of the brake seat 4 connected to the reducer 25 box, which are used for increasing exchange of lubricating oil in the brake device 26 and lubricating oil in the reducer 25, thereby facilitating heat dissipation of the brake device 26.

[0052] Preferably, the brake seat 4 is uniformly distributed with 8 oil return holes 24 with a diameter of 15mm.

[0053] Further, the outer friction plate 6 or the inner friction plate 7 near the bearing mounting section side is mounted with a gusset plate 8 between the bearing mounting section platform; the gusset plate 8 is located between the friction plate closest to the bearing mounting section side and the bearing mounting section platform, and plays a supporting role; the friction plate closest to the bearing mounting section side can be the outer friction plate 6 or the inner friction plate 7.

[0054] Further, the gusset plate 8 is provided with an oil inlet groove 81 corresponding to the position of the oil return hole 24, so as to prevent the flow of lubricating oil between the brake seat 4 and the speed reducer 25, so that the lubricating oil in the speed reducer 25 box can quickly enter the inside of the brake device 26, and the heat generated in the brake device 26 can be exchanged to the whole speed reducer 25 through the flow of lubricating oil, so that the temperature of the brake device 26 is quickly reduced, and the speed reducer 25 can work stably for a long time.

[0055] Further, the transparent cover 2 is fixedly connected with the brake seat 4 through screws I1; the transparent cover 2 is not only the mounting seat body of the bearing 21 and the skeleton oil seal 22, but also bears the load from the spring gusset plate 20, and compared with the mode of bearing the load of the spring gusset plate 20 by a hole and a check ring, the mode is more safe and reliable.

[0056] Further, the outer friction plate 6 is connected to the inner spline of the friction plate mounting section side wall through an outer spline; and the inner friction plate 7 is connected to the outer spline of the outer surface of the input spline sleeve 10 through an inner spline.

[0057] Further, the spring 19 is mounted in the mounting hole on the piston 5.

[0058] Further, the high-pressure oil inlet is provided with a high-pressure oil inlet joint 3, and high-pressure oil can be injected into the high-pressure oil cavity through the high-pressure oil inlet joint 3.

[0059] The tunneling machine walking driving speed reducer brake device provided by the utility model adopts a modular structure, and the brake device is modularized; when the brake device is maintained, the brake device can be quickly and integrally disassembled without disassembling the speed reducer box, spare parts can be replaced, and the operation is convenient and fast; meanwhile, the internal cavity of the brake device and the internal space of the box are communicated through the oil return hole on the brake device, heat generated by the brake device can be exchanged to the whole speed reducer through the flow of lubricating oil, and the temperature of the brake device can be kept within a normal range when the speed reducer works for a long time.

[0060] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application examples.

Claims

1. A boring machine travel drive reduction brake apparatus, characterized by, It comprises a transparent cover (2), a brake seat (4), a piston (5), an inner friction plate (7), an outer friction plate (6), an input spline sleeve (10), a spring (19) and a spring pad (20); One end of the brake seat (4) is detachably mounted on the case of a speed reducer (25); the transparent cover (2) is located at the other end of the brake seat (4); The brake seat (4) is provided with an axial stepped cavity in the center, which comprises a piston mounting section, a friction plate mounting section and a bearing mounting section with diameters decreasing in turn from one end connected to the transparent cover (2) to the other end; The transparent cover (2) is fixedly connected with the brake seat (4) and is sealingly mounted in the piston mounting section through a protruding part provided on one side surface; The input spline sleeve (10) is axially mounted in the stepped cavity, and one end thereof is rotatably mounted in the bearing mounting section through a bearing I (9), and the other end thereof penetrates the piston (5) and is rotatably mounted in the central hole of the transparent cover (2) through a bearing II (21); A plurality of outer friction plates (6) are axially spaced and mounted on the side wall of the friction plate mounting section, and the outer friction plates (6) can keep circumferential static between the brake seat (4); a plurality of inner friction plates (7) are axially spaced and mounted on the outer side of the input spline sleeve (10), and the inner friction plates (7) can rotate synchronously with the input spline sleeve (10); the outer friction plates (6) and the inner friction plates (7) are axially staggered and arranged with overlapping areas along the brake seat (4); The large-diameter section of the piston (5) is sealingly mounted in the piston mounting section, and the small-diameter section is sealingly mounted in the friction plate mounting section; a high-pressure oil cavity is formed between the large-diameter section of the piston (5) and the platform of the friction plate mounting section, and the brake seat (4) is provided with a high-pressure oil inlet connected to the high-pressure oil cavity; the piston (5) is closely attached to the outer friction plate (6) or the inner friction plate (7) close to the piston mounting section; The spring pad (20) is mounted in the piston mounting section and located between the piston (5) and the transparent cover (2); the spring (19) is in a compressed state and mounted between the piston (5) and the spring pad (20).

2. The walking drive reduction brake apparatus of claim 1, wherein, An O-shaped sealing ring I (11) is mounted between the protruding part of the transparent cover (2) and the piston mounting section; an O-shaped sealing ring II (12) is mounted on one end of the transparent cover (2) for connecting to a motor (27); an O-shaped sealing ring III (23) is mounted on one end of the brake seat (4) for connecting to the case of the speed reducer (25); A skeleton oil seal (22) is mounted in the central hole of the transparent cover (2); Star-shaped sealing rings and flat rings are respectively mounted between the piston (5) and the side walls of the piston mounting section and the friction plate mounting section; A plurality of oil injection magnetic screw plugs (14) are mounted on the side wall of the brake seat (4) corresponding to the friction plate mounting section.

3. The walking drive reduction brake apparatus of claim 1, wherein, A plurality of oil return holes (24) are formed in one end of the brake seat (4) connected to the case of the speed reducer (25) and connected to the stepped cavity.

4. The walking drive reduction brake apparatus of claim 3, wherein, The outer friction plate (6) or the inner friction plate (7) close to the bearing mounting section side is mounted with a backing plate (8) between the bearing mounting section platform; the backing plate (8) is provided with an oil inlet groove (81) corresponding to the oil return hole (24).

5. The walking drive reduction brake apparatus of claim 1, wherein, The spring (19) is mounted in the mounting hole on the piston (5).

6. The walking drive reduction brake apparatus of the heading machine according to claim 1, characterized in that, The high-pressure oil inlet is provided with a high-pressure oil inlet joint (3).

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