CN217633685U - Cutting speed reducer, cutting part and heading machine - Google Patents

Abstract

The utility model discloses a cutting speed reducer, cutting units and entry driving machine, this cutting speed reducer includes the casing, planetary reduction gears, the one-level reduction gears, second grade reduction gears and rotatory water-stop seal device, planetary reduction gears, the inside of casing is all located to one-level reduction gears and second grade reduction gears, one-level reduction gears transmission is connected in planetary reduction gears, second grade reduction gears transmission is connected in the one-level reduction gears, the lateral wall of casing is to the inboard concave formation support frame of establishing of casing, the support frame encloses into the inside isolated accommodation space with the casing, rotatory water-stop seal device is located in the accommodation space. The utility model discloses an among cutting speed reducer, cutting units and the entry driving machine, will rotate water sealing device and set up in casing department, and be located with the inside isolated accommodation space of casing, easy dismounting wholly says, can avoid rotating water sealing device to leak water in speed reducer and cantilever section when leaking simultaneously, avoid the damage of other components to relatively discover when rotating water sealing device damages easily.

Description

Cutting speed reducer, cutting part and heading machine

Technical Field

The utility model relates to an underground excavation equipment technical field especially relates to a cut speed reducer, cutting part and entry driving machine.

Background

The development machine is a comprehensive equipment for implementing continuous operation by using mechanical rock breaking, mucking and supporting. With the rapid development of national economy, the urbanization process of China is accelerated continuously, and in a quite long period in future, tunnel projects such as urban subway tunnels, hydraulic tunnels, river-crossing tunnels, railway tunnels, highway tunnels, municipal pipelines and the like in China are developed vigorously, so that a large number of tunnel boring machines can be applied. In addition, a heading machine is also required in coal mining.

The cutting part is a working part of the heading machine and comprises a cutting speed reducer 91, a cantilever section 93 and a cutting head 94, and the cutting part has the functions of cutting rocks and removing dust by internal spraying. Referring to fig. 1, a cutting speed reducer is composed of two planetary speed reducing mechanisms, i.e., a first planetary speed reducing mechanism 912 and a second planetary speed reducing mechanism 914. Because the central shaft rotating speeds of the first-stage planetary reducing mechanism 912 and the second-stage planetary reducing mechanism 914 are different, a water channel cannot be arranged, the water channel is intelligently arranged in the cantilever section 93, namely, the water channel is connected into the cantilever section 93 through the water inlet joint 95, and then the water channel is introduced into the rotary water sealing device 97, and water is introduced into the cutting spindle 99 to reach the cutting head 94 to be sprayed out to form water mist which is used as internal spraying dust suppression.

However, in the cutting part, because the rotation speeds of the central shaft of the first-stage planetary reduction mechanism 912 and the central shaft of the second-stage planetary reduction mechanism 914 are different, the rotating water sealing device 97 must be installed in the cantilever section 93, and during installation, the main shaft needs to be transversely pushed into the side surface of the cantilever section 93, so that the installation is difficult, and the installation into an accurate position is difficult, and the rotating water sealing device 97 is a quick-wear part with short service time, needs to be frequently maintained, and can be replaced after the whole cantilever section 93 is disassembled, so that the replacement is difficult; the damage of the rotary water sealing device 97 can cause water leakage, accumulated water can be left in the cantilever section 93 and is not easy to find, and the internal structure of the cantilever section 93 is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a convenient, the easily discover cutting speed reducer, cutting units and the entry driving machine that the part damaged of dismouting maintenance.

The utility model provides a cutting speed reducer, including casing, planet reduction gears, one-level speed reducer, second grade speed reducer and rotatory water-stop seal device, planet reduction gears one-level speed reducer with second grade speed reducer all locates the inside of casing, one-level speed reducer transmission connect in planet reduction gears, second grade speed reducer transmission connect in the one-level speed reducer, the lateral wall of casing to the casing inboard is concave establishes and forms the stand, the stand enclose into with the inside isolated accommodation space of casing, rotatory water-stop seal device locates in the accommodation space.

In one embodiment, the housing is provided with an opening communicated with the accommodating space.

In one embodiment, the axis of the secondary speed reducer and the axis of the planetary speed reduction mechanism are located on the same straight line, the axis of the primary speed reducer is offset from the axis of the secondary speed reducer and the axis of the planetary speed reduction mechanism, and the rotary water sealing device is connected to the secondary speed reducer.

In one embodiment, the planetary reduction mechanism comprises a planetary output member and an input member, a first gear and a second gear which are relatively fixed are arranged on the first-stage reduction member, a third gear and a reducer output shaft are arranged on the second-stage reduction member, the first gear is in transmission connection with the planetary output member of the planetary reduction mechanism, and the third gear is in transmission connection with the second gear; the axes of the input shaft, the planetary output element, the third gear and the output shaft of the speed reducer are positioned on the same straight line, the axes of the first gear and the second gear are parallel to the axes of the input shaft, the planetary output element and the output shaft of the speed reducer at intervals, and the rotating water sealing device is positioned on the straight line where the axes of the input shaft, the planetary output element, the third gear and the output shaft of the speed reducer are positioned.

In one embodiment, the primary speed reducer includes two first gears and two second gears, each of the first gears and one of the second gears are connected by a connecting portion, the two first gears are respectively engaged with the external teeth of the planetary output member, the two second gears are respectively engaged with the third gear, a cavity is formed between the two connecting portions, and the holder is located in the cavity.

In one embodiment, a matching portion is arranged in the housing, an inner gear ring is arranged on the inner side of the matching portion, the planetary reduction mechanism further comprises a planetary wheel and a planetary carrier, a sun wheel is arranged on the input shaft, the planetary wheel is rotatably arranged on the planetary carrier, outer teeth of the planetary wheel are meshed with outer teeth of the sun wheel, the outer teeth of the planetary wheel are also meshed with the inner gear ring on the housing, and the planetary output member is fixedly connected to the planetary carrier.

In one embodiment, the secondary speed reducer further includes an extension shaft extending into the receiving space, the rotary water sealing device is disposed at an end of the extension shaft, the secondary speed reducer is further provided with a first water channel, and the rotary water sealing device is communicated with the first water channel.

The utility model also provides a cutting unit, including above-mentioned cutting speed reducer, cantilever section, cutting main shaft and cutterhead, cantilever section fixed connection in the cutting speed reducer the casing, the cutting main shaft is located in the cantilever section, and stretch into in the cutterhead, cutting main shaft fixed connection in second grade speed reduction member, the second water course has been seted up in the cutting main shaft, the second water course with rotatory water-stop seal device intercommunication.

In one embodiment, the cutting part further includes a connecting cylinder, and the connecting cylinder is respectively connected to the cutting spindle and the secondary speed reducer.

The utility model also provides a heading machine, it includes above-mentioned cutting units.

The utility model discloses a cut speed reducer, in cutting units and entry driving machine, set up rotatory water sealing device in casing department, and be located with the inside isolated accommodation space of casing, compare the condition of installing rotatory water sealing device in the cantilever section of cutting units, it just can install the exact size to change in the installation, and it is also comparatively convenient to change rotatory water sealing device in little spaces such as tunnel, easy dismounting wholly says, can avoid water leakage in speed reducer and cantilever section when rotatory water sealing device leaks simultaneously, avoid the damage of other components, and relatively easily discover when rotatory water sealing device damages.

Drawings

Fig. 1 is a schematic cross-sectional view of a cutting unit.

Fig. 2 is a schematic sectional view of a cutting speed reducer according to an embodiment of the present invention.

Fig. 3 is a schematic plan view of elements of the cutting speed reducer shown in fig. 2.

Fig. 4 is a schematic cross-sectional view of a cutting unit according to an embodiment of the present invention.

Fig. 5 is a partial enlarged view of V in fig. 4.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.

As shown in fig. 2 and 3, the cutting speed reducer of an embodiment of the present invention includes a housing 11, a planetary speed reducer 13, a first-stage speed reducer 15, a second-stage speed reducer 17, and a rotary water sealing device 19. The planetary reduction mechanism 13, the primary reduction gear 15, and the secondary reduction gear 17 are provided in the housing 11. The primary speed reducer 15 is connected to the planetary speed reducing mechanism 13 in a transmission manner, the secondary speed reducer 17 is connected to the primary speed reducer 15 in a transmission manner, the axis of the secondary speed reducer 17 and the axis of the planetary speed reducing mechanism 13 are positioned on the same straight line, and the axis of the primary speed reducer 15 is deviated from the axis of the secondary speed reducer 17 and the axis of the planetary speed reducing mechanism 13. The rotary water seal device 19 is connected to the secondary speed reducer 17, and the rotary water seal device 19 is located between the secondary speed reducer 17 and the planetary reduction mechanism 13 in the axial direction of the secondary speed reducer 15.

Specifically, the planetary reduction mechanism 13 includes the planetary output member 132, the first reduction gear 15 is provided with a first gear 152 and a second gear 154 that are relatively fixed, and the second reduction gear 17 is provided with a third gear 172 and a reducer output shaft 174. The first gear 152 is drivingly connected to the planetary output member 132 of the planetary reduction mechanism 13, and the third gear 172 is drivingly connected to the second gear 154.

In this embodiment, a fitting portion 112 is provided in the housing 11, and an inner ring gear 114 is provided on an inner side of the fitting portion 112. Two opposite side walls of the housing 11 are provided with openings 116 (see fig. 3) corresponding to the positions of the rotary water seal 19 to expose the rotary water seal 19. Therefore, the rotary water sealing device can be conveniently disassembled and assembled, whether the rotary water sealing device leaks or not can be observed, and the external water pipe can be conveniently led into the cutting speed reducer. It will be appreciated that the aperture 116 may be provided in only one side wall of the housing 11.

Specifically, one end of the housing 11 is fixedly connected with an end cover 118, the planetary reduction mechanism 13 is arranged at the end of the housing 11 where the end cover 118 is arranged, and a part of the planetary reduction mechanism 13 extends out of the housing 11 from an opening of the end cover 118 to transmit external power into the cutting speed reducer. The other end of the housing 11, which is provided with the end cover 118, is provided with a port, and the output shaft 174 of the speed reducer extends out of the housing 11 from the port to transmit power to the cutting head of the cutting part.

Specifically, the housing 11 is formed by fastening an upper portion and a lower portion, and in order to display components inside the housing 11, only the lower portion of the housing 11 is shown in fig. 3, and the upper portion is removed.

In the present embodiment, the planetary reduction mechanism 13 further includes an input shaft 134, a planetary gear 135, and a planetary carrier 136. The input shaft 134 is adapted to be connected to a motor (not shown) to input power to the cutting reducer. The input shaft 134 is provided with a sun gear 137, the planetary gear 135 is rotatably provided on a planet carrier 136, external teeth of the planetary gear 135 are engaged with external teeth of the sun gear 137, and the external teeth of the planetary gear 135 are also engaged with the internal gear 114 on the housing 11. The planet output member 132 is fixedly connected to a planet carrier 136. The input shaft 134 is driven by the motor to rotate, thereby driving the planet wheel 135, the planet carrier 136 and the planet output member 132 to rotate.

Specifically, a support 119 is fixed to the inner side of the end cover 118, and a first bearing 121 is sleeved between the support 119 and the input shaft 134. A sealing plate 123 is fixedly connected to the outer side of the supporting member 119.

Specifically, the end surface of the carrier 136 protrudes toward one side to form a protruding shaft portion 1362, and a shaft hole is formed in the protruding shaft portion 1362. The planetary output member 132 is fitted in the shaft hole of the protruding shaft portion 1362.

Specifically, the planetary output member 132 is provided with external teeth.

In this embodiment, the one-stage speed reducer 15 includes two first gears 152 and two second gears 154, and one first gear 152 and one second gear 154 are connected by a connecting portion 156. The two first gears 152 are respectively meshed with external teeth of the planetary output member 132, and the two second gears 154 are respectively meshed with the third gear 172. A cavity 158 is formed between the two connecting portions 156, and the rotary water sealing device 19 is disposed in the cavity 158. The two groups of gears are respectively positioned at two sides of the cutting speed reducer, so that the sectional area of the cutting speed reducer is increased, and the impact resistance of the cutting speed reducer can be increased. It is understood that the first gear 152 and the second gear 154 may be only one. When only one first gear 152 and one second gear 154 are arranged, a balance structure can be arranged on one side opposite to the first gear 152 and the second gear 154, so that the balance of the cutting speed reducer can be ensured, and the sectional area of the cutting speed reducer can be increased.

In this embodiment, the secondary speed reducer 17 further includes an extension shaft 176, the extension shaft 176 extends in a direction opposite to the speed reducer output shaft 174, the extension shaft 176 extends into the cavity 158, and the rotary water sealing device 19 is provided at an end of the extension shaft 176. The second reduction gear 17 is also provided with a first water passage 179 therein, and the rotary water seal 19 is communicated with the first water passage 179.

Specifically, a key groove 181 is provided on a portion of the reducer output shaft 174 of the secondary speed reducer 17 protruding out of the housing 11.

In this embodiment, the axes of the input shaft 134, the planetary output member 132, the third gear 172 and the reducer output shaft 174 are located on the same straight line, and the axes of the first gear 152 and the second gear 154 are spaced apart and parallel to the axes of the input shaft 134, the planetary output member 132 and the reducer output shaft 174. The rotary water seal device 19 is located on a straight line on which the axes of the input shaft 134, the planetary output member 132, the third gear 172 and the reducer output shaft 174 are located.

In this embodiment, the housing 11 further includes a support frame 125 extending into the cavity 158 formed by the first reduction gear 15, the support frame 125 is formed by recessing the sidewall of the housing 11 toward the inner side of the housing 11, and one end of the extension shaft 175 extends into the receiving space to connect with the rotating water sealing device 19 in the receiving space. The holder 125 defines a receiving space which communicates with the outside of the housing 11 through the opening 116 and is isolated from the other portions of the housing 11, and the rotary water seal device 19 is located in the receiving space. Thereby, the rotary water seal 19 can be exposed to the outside of the housing 11, and the lubricating oil can be surely stored in the cutting speed reducer without leaking. The housing 11 is formed with a passage extending through opposite sides of the housing 11 at the center thereof by providing the receiving space and the opening 116, and the passage is isolated from the inside of the housing 11 by the holder 125.

Specifically, a second bearing 126 is sleeved between the planet output member 132 and the support frame 125. A third bearing 127 is interposed between the casing 11 and the connecting portion 156 of the primary speed reducer 15. The fourth bearing 128 is fitted between the extension shaft 176 of the secondary reduction gear 17 and the holder 125 of the housing 11. A fifth bearing 129 is sleeved between the reducer output shaft 174 of the secondary speed reducer 17 and the housing 11.

It will be appreciated that in another embodiment, the motor may also be connected to the secondary reduction member 17, while the output shaft of the planetary reduction mechanism 13 is used as the output shaft of the cutting reducer, i.e. the positions of the secondary reduction member 17 and the planetary reduction mechanism 13 are interchanged.

The utility model relates to an among the cutting speed reducer of embodiment, set up rotatory water sealing device in casing department, and be located with the inside isolated accommodation space of casing, compare the condition of installing rotatory water sealing device in the cantilever section of cutting parts, it just can install the exact size to change in the installation, and it is also comparatively convenient to change rotatory water sealing device in little spaces such as tunnel, easy dismounting wholly, can avoid the leakage of water leakage in speed reducer and cantilever section when rotatory water sealing device leaks simultaneously, avoid the damage of other elements, and discover relatively easily when rotatory water sealing device damages.

The utility model discloses still provide a cutting units, please refer to fig. 4 and 5, the cutting units of an embodiment includes above-mentioned cutting speed reducer, cantilever section 31, cutting spindle 33 and cutterhead 35. The cantilever section 31 is fixedly connected to the housing 11 of the cutting speed reducer. The cutting spindle 33 is located in the cantilever section 31 and extends into the cutting head 35, the cutting spindle 33 is fixedly connected to the reducer output shaft 174 of the second-stage speed reducer 17, a second water channel 332 is formed in the cutting spindle 33, and the second water channel 332 is communicated with the rotary water sealing device 19 through the first water channel 179 so as to introduce water into the cutting head 35 to realize internal spraying. Wherein, the cutting spindle 33, the reducer output shaft 174 and the cutting head 35 have the same rotating speed, and the matching surface of the water channel is sealed by static seals such as O-shaped sealing rings.

Specifically, one end of the cantilever section 31 is provided with a flange 312, and the flange 312 is bolted to the outer wall of the housing 11.

Specifically, a support ring 314 is disposed on the inner wall of the cantilever section 31 to support the cutting spindle 33. More specifically, a sleeve 334 is fixed on the cutting spindle 33, the supporting ring 314 is sleeved outside the cutting spindle 33, and a sealing ring 316 is arranged between the supporting ring 314 and the sleeve 334.

In this embodiment, the cutting unit further includes a connecting cylinder 37, and the connecting cylinder 37 is connected to the cutting spindle 33 and the reducer output shaft 374 respectively. The connecting cylinder 37 and the reducer output shaft 374 can be fixedly connected by splines.

In this embodiment, the cutting head 35 is provided with cutting teeth for cutting rocks and the like.

The utility model also provides a heading machine, it includes above-mentioned cutting units.

The above is only the preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, but not limited to the above embodiments, any skilled person familiar with the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention all still belong to the technical scope of the present invention.

Claims (10)

1. The utility model provides a cutting speed reducer, its characterized in that, cutting speed reducer includes casing (11), planetary reduction mechanism (13), one-level speed reducer (15), second grade speed reducer (17) and rotatory water sealing device (19), planetary reduction mechanism (13), one-level speed reducer (15) with second grade speed reducer (17) are all located the inside of casing (11), one-level speed reducer (15) transmission connect in planetary reduction mechanism (13), second grade speed reducer (17) transmission connect in one-level speed reducer (15), the lateral wall of casing (11) to casing (11) inboard concave establishment forms support frame (125), support frame (125) enclose with the isolated accommodation space in inside of casing (11), rotatory water sealing device (19) are located in the accommodation space.

2. The cutting reducer according to claim 1, wherein the housing (11) is provided with an opening (116) communicating with the accommodating space.

3. The cutting reducer according to claim 1, characterized in that the axis of the secondary reduction member (17) and the axis of the planetary reduction mechanism (13) are located on the same line, the axis of the primary reduction member (15) is offset from the axis of the secondary reduction member (17) and the axis of the planetary reduction mechanism (13), and the rotating water seal (19) is connected to the secondary reduction member (17).

4. The cutting speed reducer of claim 3, characterized in that the planetary speed reducer (13) comprises a planetary output member (132) and an input shaft (134), a first gear (152) and a second gear (154) which are relatively fixed are arranged on the primary speed reducer (15), a third gear (172) and a speed reducer output shaft (174) are arranged on the secondary speed reducer (17), the first gear (152) is in transmission connection with the planetary output member (132) of the planetary speed reducer (13), and the third gear (172) is in transmission connection with the second gear (154); the axes of the input shaft (134), the planetary output member (132), the third gear (172) and the reducer output shaft (174) are located on the same straight line, the axes of the first gear (152) and the second gear (154) are spaced and parallel to the axes of the input shaft (134), the planetary output member (132) and the reducer output shaft (174), and the rotary water sealing device (19) is located on the straight line where the axes of the input shaft (134), the planetary output member (132), the third gear (172) and the reducer output shaft (174) are located.

5. The cutting reducer of claim 4, wherein the primary reducer (15) comprises two first gears (152) and two second gears (154), each of the first gears (152) and one of the second gears (154) being connected by a connecting portion (156), the two first gears (152) being engaged with external teeth of the planetary output member (132), the two second gears (154) being engaged with the third gear (172), a cavity (158) being formed between the two connecting portions (156), and the support bracket (125) being located in the cavity (158).

6. The cutting speed reducer according to claim 4, characterized in that the housing (11) is provided with a matching part (112), an inner gear ring (114) is arranged on the inner side of the matching part (112), the planetary speed reducer (13) further comprises a planetary gear (135) and a planetary carrier (136), the input shaft (134) is provided with a sun gear (137), the planetary gear (135) is rotatably arranged on the planetary carrier (136), the outer teeth of the planetary gear (135) are engaged with the outer teeth of the sun gear (137), the outer teeth of the planetary gear (135) are also engaged with the inner gear ring (114) on the housing (11), and the planetary output member (132) is fixedly connected to the planetary carrier (136).

7. The cutting reducer according to claim 1, characterized in that the secondary speed reducer (17) further comprises an extension shaft (176), the extension shaft (176) extends into the accommodation space, the rotary water seal device (19) is arranged at the end of the extension shaft (176), a first water channel (179) is further arranged in the secondary speed reducer (17), and the rotary water seal device (19) is communicated with the first water channel (179).

8. Cutting unit, comprising a cutting reducer according to any one of claims 1-7, a boom section (31), a cutting spindle (33) and a cutting head (35), wherein the boom section (31) is fixedly connected to the housing (11) of the cutting reducer, the cutting spindle (33) is located in the boom section (31) and extends into the cutting head (35), the cutting spindle (33) is fixedly connected to the secondary reducer (17), a second water channel (332) is formed in the cutting spindle (33), and the second water channel (332) is communicated with the rotary water seal device (19).

9. The cutting part according to claim 8, characterized in that the cutting part further comprises a connecting barrel (37), the connecting barrel (37) being connected to the cutting spindle (33) and the secondary speed reducer (17), respectively.

10. A heading machine comprising a cutting section according to claim 8 or 9.

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