Cutting speed reducer for horizontal shaft heading machine

Abstract

The utility model discloses a cutting speed reducer for a transverse shaft heading machine, and relates to the field of speed reducers, the cutting speed reducer comprises a shell, the interior of the shell is connected with a shaft I assembly, a shaft II assembly, a forced lubrication cooling system, a shaft III planetary assembly and an output planetary head set through fasteners, and the shell is further provided with an oil suction pipe; and a pump suction oil pipe group of the forced lubrication cooling system is connected with an oil suction pipe through a high-pressure rubber pipe assembly. Power of the motor is transmitted to the output inner gear ring through the coupler and four-stage gear transmission, the power is transmitted to the cutting roller through a hexagonal or square groove or an involute spline, the coal rock breaking purpose is achieved, the metal sealing ring and the dustproof ring are applied to the joint of the cutting roller and the roller for dust sealing, abrasion resistance is higher, reliability is higher, meanwhile, the V-shaped ring is arranged, and the service life of the cutting roller is prolonged. And the labyrinth ring is used for comprehensively preventing dust of the floating seal, so that the service life of the floating seal is prolonged, and the cutting speed reducer is furthest protected.

Description

Technical Field

[0001] This application relates to the field of speed reducers, and more particularly to a cutting speed reducer for a horizontal shaft tunneling machine. Background Technology

[0002] As my country's coal mining shifts towards hard rock and large cross-sections, high-power heavy-duty horizontal shaft tunneling machines are becoming increasingly common in fully mechanized mining faces.

[0003] The cutting reducers used in the market for horizontal shaft tunneling machines are mainly imitation products. Market research revealed that domestically produced cutting reducers have high failure rates in their high-speed shafts and output mechanisms; the floating seals at the connection between the cutting reducer and the drum leak severely, making maintenance inconvenient and performance unsatisfactory; and the high oil temperature inside the cutting reducer gearbox also contributes to the high failure rate of the seals. Therefore, given the current situation, it is imperative to develop a highly reliable horizontal shaft cutting reducer suitable for high power. Utility Model Content

[0004] To address the problems of inconvenient maintenance and seal failure caused by high oil temperature, this application provides a cutting reducer for a horizontal shaft tunneling machine.

[0005] The present application provides a cutting reducer for a horizontal shaft tunneling machine, which adopts the following technical solution: it includes a housing, and the interior of the housing is connected by fasteners to a first shaft assembly, a second shaft assembly, a forced lubrication and cooling system, a third shaft planetary assembly, and an output planetary head assembly. The housing is also provided with an oil suction pipe, and the pump oil suction pipe assembly of the forced lubrication and cooling system is connected to the oil suction pipe through a high-pressure hose assembly.

[0006] The I-axis assembly includes a mounting base and a sensor. The mounting base contains a first shaft body and a sealing bushing. An input end seal and a bearing cap are provided on the outer side of the sealing bushing. A first retaining ring is also installed on the inner side of the mounting base. A bearing is installed inside the mounting base, inside the retaining ring, and a spacer is installed on one side of the bearing. An output end seal and a small helical gear are installed at one end of the inner side of the mounting base.

[0007] Preferably, the II-axis assembly includes a second shaft body, one end of which is fitted with a second retaining ring and a large helical gear, a bearing is fitted on the outer side of the middle part of the second shaft body, a dustproof gasket is provided at the connection between the second shaft body and the housing, a bearing removal ring is fitted on one side of the bearing, a small bevel gear shaft is provided on the outer side of the second shaft body, a bearing spacer is fitted on the side of the bearing removal ring, a bearing cup is provided on the outer side of the bearing, and a bearing cap and a bearing spacer are fitted on the other side of the bearing.

[0008] Preferably, the III-axis planetary assembly includes a primary sun gear shaft, an oil seal bushing is installed on the outer side of one end of the primary sun gear shaft, a III-axis bearing is provided on the outer side of the primary sun gear shaft, a bearing cap is installed on the outer side of the III-axis bearing, an anti-shear pin fastener is also installed on the outer side of the primary sun gear shaft, a large bevel gear is installed on one side of the anti-shear pin fastener, a lubrication gear and a seal are installed on the other end of the primary sun gear shaft, a primary internal gear ring is also installed on the outer side of the primary sun gear shaft, a primary planetary carrier and a primary planetary gear bearing are provided on the inner side of the primary internal gear ring, the primary planetary carrier is connected to the primary planetary gears through the primary planetary gear bearing, and a planetary cap connecting fastener and a wear-resistant spacer are installed on the inner side of the primary planetary carrier.

[0009] Preferably, the output planetary head assembly includes connecting screws and anti-loosening assembly, a left center gear, and a planetary carrier. A spline sleeve is installed on the left center gear, and the left center gear is connected to the right center gear through the spline sleeve. A bearing pressure ring and a cylindrical bearing are installed on the inner side of the planetary carrier. An output internal gear ring, planet gears, and a planetary bearing assembly are also installed on the inner side of the planetary carrier. A planetary gear shaft and an output bearing are installed inside the planetary bearing assembly. A wear-resistant ring and a limiting ring are installed on the side of the planetary gear shaft. An output end bearing cap is installed at one end of the output bearing, and an output bearing pressure cap is installed on the outer side of the output end bearing cap. The output planetary head assembly also includes a cylindrical bearing positioning block assembly, anti-shear fasteners, and a static seal. A metal ring seal and a rotating combination ring are installed on one side of the static seal.

[0010] Preferably, the forced lubrication cooling system includes a pump mounting base, on both sides of which are provided a pump outlet pipe assembly and a pump suction pipe assembly. A sealing gasket is installed on the pump mounting base, and a vent plug is installed on the pump outlet pipe assembly and the pump suction pipe assembly. A lubrication pinion, a gear pump, and fasteners are also installed on the pump mounting base.

[0011] Preferably, the I-axis assembly is provided with a first oil reservoir and a second oil reservoir, and one end of the mounting base is provided with a cooling water channel and a first lubricating oil passage.

[0012] Preferably, the mounting base has an oil injection hole in the middle, a closed oil cavity in the inner side of the mounting base, and a second lubrication oil passage in the other end of the mounting base.

[0013] In summary, this application includes at least one of the following beneficial technical effects:

[0014] 1. This application uses a four-stage transmission system consisting of helical gear transmission, bevel gear transmission, NGW planetary transmission, and a final-stage fixed-axis gear train to transmit the motor's power to the output internal gear ring via a coupling and the aforementioned four-stage gear transmission. The load is then transmitted to the cutting drum via a hexagonal or square groove or involute spline to achieve the purpose of breaking coal and rock. At the contact point with the drum, metal sealing rings and dustproof rings are used for dust sealing, which has stronger wear resistance and higher reliability. At the same time, V-rings and labyrinth rings are arranged to comprehensively prevent dust from the floating seal, thereby improving the service life of the floating seal and maximizing the protection of the cutting reducer.

[0015] 2. Based on spatial location and working state, this application divides the oil into multiple independent oil chambers, which can reduce the oil temperature in the oil chambers and solve the problem of seal failure caused by high oil temperature. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a cutting reducer for a horizontal shaft tunneling machine according to an embodiment of this application;

[0017] Figure 2 This is a schematic diagram illustrating the overall cross-sectional structure of the embodiments of this application;

[0018] Figure 3 This is a schematic diagram illustrating the structure of the I-axis assembly, which is the main feature of this application.

[0019] Figure 4 This is a schematic diagram illustrating the structure of the II-axis assembly, as shown in the embodiments of this application.

[0020] Figure 5 This is a schematic diagram illustrating the structure of the III-axis planetary assembly, as shown in the embodiments of this application.

[0021] Figure 6 This is a schematic diagram illustrating the main output planetary head assembly structure in the embodiments of this application;

[0022] Figure 7 This is a schematic diagram illustrating the front structure of the forced lubrication cooling system, which is the main embodiment of this application.

[0023] Figure 8 This is a schematic diagram illustrating the side structure of the forced lubrication cooling system, which is the main embodiment of this application.

[0024] Reference numerals: 1. Housing; 2. I-axis assembly; 201. Sensor; 202. First bearing cap; 203. Input end seal; 204. Sealing bushing; 205. First retaining ring; 206. First bearing; 207. Spacer; 208. Mounting base; 209. Output end seal; 210. Small helical gear; 211. First oil reservoir; 212. Second oil reservoir; 213. Cooling water channel; 214. First lubrication oil passage; 215. Oil injection hole; 216. Sealed oil chamber; 217. Second lubrication oil passage; 3. II-axis assembly; 301. Second retaining ring; 302. Large helical gear; 303. Dustproof gasket; 304. Second bearing; 305. Bearing removal ring; 306. Small bevel gear shaft; 307. Bearing spacer; 308. Bearing cup; 309. Second bearing cap; 310. Gear spacer; 4. III-axis planetary assembly; 401. First-stage sun gear shaft; 402. Oil seal bushing; 403. III-axis bearing; 404. Third bearing cap; 405. Shear pin fastener; 406. Large bevel gear; 407. Lubricating large gear; 408. Seal; 409. 410. First-stage internal gear ring; 411. First-stage planetary gear; 412. First-stage planetary gear bearing; 413. First-stage planetary carrier; 414. Planetary gland connecting fastener; 415. Wear-resistant spacer ring; 5. Output planetary head assembly; 501. Connecting screws and anti-loosening assembly; 502. Left center gear; 503. Spline sleeve; 504. Right center gear; 505. Planetary carrier; 506. Bearing pressure ring; 507. Cylindrical bearing; 508. Output internal gear ring; 509. Planetary gear; 510. Planetary bearing assembly; 511. Planetary gear shaft; 512. Wear-resistant ring; 5 13. Limiting ring; 514. Output bearing; 515. Output bearing end cap; 516. Output bearing gland; 517. Cylindrical bearing positioning block assembly; 518. Shear fastener; 519. Static seal; 520. Metal ring seal; 521. Rotary combination ring; 6. Forced lubrication and cooling system; 601. Pump outlet pipe assembly; 602. Pump mounting base; 603. Pump suction pipe assembly; 604. Sealing gasket; 605. Vent plug; 606. Lubrication pinion; 607. Gear pump; 608. Second fastener; 7. Suction pipe. Detailed Implementation

[0025] The following is combined with Figures 1-8 This application will be described in further detail.

[0026] This application discloses a cutting reducer for a horizontal shaft tunneling machine. Please refer to the following embodiments. Figure 1 and Figure 2 The system includes a housing 1. Inside the housing 1, the I-axis assembly 2, the II-axis assembly 3, the forced lubrication and cooling system 6, the III-axis planetary assembly 4, and the output planetary head assembly 5 are connected by fasteners. The housing 1 is also equipped with an oil suction pipe 7. The pump oil suction pipe assembly of the forced lubrication and cooling system 6 is connected to the oil suction pipe 7 through a high-pressure hose assembly.

[0027] The I-axis assembly 2, II-axis assembly 3, forced lubrication and cooling system 6, III-axis planetary assembly 4, and output planetary head assembly 5 are all connected to the housing 1 by fastening devices. The pump suction pipe assembly of the forced lubrication and cooling system 6 is connected to the suction pipe 7 through a high-pressure hose assembly, and the pump discharge pipe assembly is connected to the cooling system through a high-pressure hose assembly. The housing 1 is machined with cooling return oil channels, and the cooled lubricating oil can be injected into the I-axis assembly 2, II-axis assembly 3 and output planetary head assembly 5 through the cooling return oil channels. The cutting reducer divides the oil chamber into multiple independent oil chambers according to the spatial position and working state.

[0028] The oil suction pipe 7 is a thin-walled steel pipe installed above the housing and inserted to the bottom of oil chamber B. Its position is relatively far from the output planetary head assembly, providing good vibration resistance. Oil chamber A is attached to shaft I assembly 2 to ensure bearing lubrication in shaft I assembly 2; oil chamber B is attached to shaft II assembly 3 to ensure primary helical gear transmission and bearing lubrication in shaft II assembly 3; oil chamber C is attached to shaft III planetary assembly 4 to ensure secondary bevel gear transmission and bearing lubrication in shaft III planetary assembly 4; oil chambers D and E are attached to output planetary head assembly 5, symmetrical and relatively independent, to ensure planetary transmission in shaft III planetary assembly 4, fixed-axis gear train transmission in output planetary head assembly 5, and bearing lubrication.

[0029] Please refer to Figure 3 The I-axis assembly 2 includes a mounting base 208 and a sensor 201. A first shaft body is housed inside the mounting base 208. A sealing bushing 204 is mounted on the mounting base 208. An input end seal 203 and a first bearing cap 202 are provided on the outer side of the sealing bushing 204. A first retaining ring 205 is also mounted on the inner side of the mounting base 208. A first bearing 206 is mounted inside the mounting base 208, inside the retaining ring 205, and a spacer is mounted on one side of the first bearing 206. Set 207, one end of the inner side of the mounting base 208 is equipped with an output end seal 209 and a small helical gear 210; the I shaft assembly 2 is provided with a first oil reservoir 211 and a second oil reservoir 212, one end of the mounting base 208 is provided with a cooling water channel 213 and a first lubricating oil passage 214, the middle of the mounting base 208 is provided with an oil injection hole 215, the inner side of the mounting base 208 is provided with a closed oil cavity 216, and the other end of the mounting base 208 is provided with a second lubricating oil passage 217.

[0030] Because the helical gear pair generates some axial force, the first bearing 206 uses a combination of four-point contact ball bearings and cylindrical roller bearings, tightened with a round nut and double nuts for anti-loosening. The high-speed stage is located slightly above the cutting reducer, where bearing and gear lubrication is limited. Therefore, the entire high-speed stage is designed as a closed oil chamber A. Cooling water channels are arranged on the I-shaft mounting base, and a forced lubrication oil hole is provided above the high-speed bearing, participating in the entire forced lubrication system. Cooled lubricating oil can enter through the forced lubrication oil hole. A temperature sensor 201 is arranged diagonally below the I-shaft mounting base to monitor the oil temperature in the closed oil chamber A at all times. An oil injection hole 215, a vent hole, and a primary oil chamber through hole are arranged at corresponding positions above the I-shaft mounting base. The purpose of the through hole is to allow cooled lubricating oil to flow into other oil chambers when the injected level exceeds a certain level. A first oil reservoir 211 and a second oil reservoir 212 are cast diagonally below the I-shaft mounting base to ensure lubrication of both bearings under different operating conditions, in conjunction with the pitching operation of the cutting unit.

[0031] Please refer to Figure 4 The second shaft assembly 3 includes a second shaft body. A second retaining ring 301 and a large helical gear 302 are installed at one end of the second shaft body. A second bearing 304 is installed on the outer side of the middle part of the second shaft body. A dustproof gasket 303 is provided at the connection between the second shaft body and the housing. A bearing removal ring 305 is installed on one side of the second bearing 304. A small bevel gear shaft 306 is provided on the outer side of the second shaft body. A bearing spacer 307 is installed on the side of the bearing removal ring 305. A bearing cup 308 is provided on the outer side of the second bearing 304. A second bearing cover 309 and a gear spacer 310 are installed on the other side of the second bearing 304.

[0032] The large helical gear 302 uses a double-nut anti-loosening design and a shaft retaining ring at the outer end for added protection. During installation, a gear spacer 310 provides restraint. A disassembly groove is added to the small bevel gear shaft 306, and a bearing disassembly ring 305 is incorporated into the structure for easier disassembly and maintenance. The central hole in the small bevel gear shaft 306 serves two purposes: weight reduction and allowing for communication between the two oil chambers, enabling lubricating oil flow as needed during the cutting section's pitching operation. The bearing cup 308 has a circumferentially designed forced lubrication hole, participating in the entire forced lubrication system. Cooled lubricating oil can enter the bearing cavity through this hole. The second bearing 304 has a cylindrical roller bearing on one side that only bears radial force, and a mating tapered roller bearing on the other side that primarily bears the axial force transmitted from the bevel gear. It is installed in the bearing cup 308 and secured with a second bearing cap 309 and a screw-mounted anti-loosening retaining ring. A countersunk retaining ring at the outer end prevents small parts from falling into the reducer housing and causing further damage. A bearing spacer 307 provides restraint between the two bearings. The oil baffle is installed directly below the second bearing cover 309 with fasteners. When the cutting part cuts downwards, the oil stored in the groove of the oil baffle can ensure that there is oil for lubrication at the meshing point of the helical gear. At the same time, the oil baffle can prevent the large helical gear 302 from stirring the oil chamber B when rotating, which would cause the oil suction pipe to be obstructed.

[0033] Please refer to Figure 5 The III-axis planetary assembly 4 includes a primary sun gear shaft 401. An oil seal bushing 402 is installed on the outer side of one end of the primary sun gear shaft 401. A III-axis bearing 403 is provided on the outer side of the primary sun gear shaft 401. A third bearing cap 404 is installed on the outer side of the III-axis bearing 403. An anti-shear pin fastener 405 is also installed on the outer side of the primary sun gear shaft 401. A large bevel gear 406 is installed on one side of the anti-shear pin fastener 405. A lubricating large gear 407 and a seal 408 are installed on the other end of the primary sun gear shaft 401. A primary internal gear ring 409 is also installed on the outer side of the primary sun gear shaft 401. A primary planetary carrier 412 and a primary planetary gear bearing 411 are provided on the inner side of the primary internal gear ring 409. A primary planetary carrier 412 is connected to a primary planetary gear 410 through the primary planetary gear bearing 411. A planetary cap is installed on the inner side of the primary planetary carrier 412 to connect a first fastener 413 and a wear-resistant spacer 414.

[0034] The large bevel gear 406 meshes with the small bevel gear shaft 306 and is connected to the first-stage sun gear shaft 401 via an anti-shear pin fastener 405. Both synchronously transmit power to the first-stage sun gear shaft 401. A set of seals 408 is arranged on the oil seal sleeve 402 at the end of the first-stage sun gear shaft 401, axially limited by a retaining ring, and prevented from rotating circumferentially by an anti-rotation pin; another set is arranged on the lubrication gear 407 to separate the oil chamber. The first-stage internal gear ring 409 is fixed to the housing 1 with fasteners, and is connected via the first-stage planetary gear 410 and... The first-stage planetary carrier 412 transmits power to the next stage. The first-stage planetary carrier 412 and the planetary cover 413 are connected by fasteners to form a squirrel cage, which encloses the first-stage planetary gear bearing 411. The distance between the first-stage internal gear ring 409 and the wear-resistant spacer 414 is limited. The third-stage bearing 403 is composed of two single-row tapered roller bearings. One is installed between the housing 1 and the first-stage sun gear shaft 401 by fasteners through the third bearing cover 404, and the other is installed between the lubricating large gear 407 and the first-stage internal gear ring 409.

[0035] Please refer to Figure 6The output planetary head assembly 5 includes a connecting screw and anti-loosening assembly 501, a left center gear 502, and a planetary carrier 505. A spline sleeve 503 is mounted on the left center gear 502, which is connected to a right center gear 504 via the spline sleeve 503. A bearing pressure ring 506 and a cylindrical bearing 507 are mounted on the inner side of the planetary carrier 505. An output internal gear ring 508, planetary gears 509, and a planetary bearing assembly 510 are also mounted on the inner side of the planetary carrier 505. The planetary bearing assembly 510 contains a planetary bearing housing. The planetary gear shaft 511 and the output bearing 514 are provided. Wear-resistant ring 512 and limit ring 513 are installed on the side of the planetary gear shaft 511. Output bearing end cover 515 is installed at one end of the output bearing 514. Output bearing pressure cover 516 is installed on the outside of the output bearing end cover 515. The output planetary head assembly 5 also includes cylindrical bearing positioning block assembly 517, shear fastener 518 and static seal 519. Metal ring seal 520 and rotating combination ring 521 are installed on one side of the static seal 519.

[0036] The planetary carrier 505 is connected and fixed to the housing 1 by fasteners and anti-shear pins 518, and supported by the output bearing 514. The cylindrical bearing 507 is installed between the planetary carrier 505 and the output internal gear ring 508 by fasteners via bearing pressure rings 506, and the cylindrical bearing positioning block assembly 517 provides axial positioning. The output bearing 514 is installed between the planetary carrier 505 and the output internal gear ring 508 by fasteners via output bearing end caps 515 and output bearing pressure caps 516, and is axially positioned by a limiting ring 513. The planetary bearing assembly 510 is installed between the planetary gear shaft 511 and the planetary gears 509. The first-stage planetary carrier 412 transmits power to the right center gear 504. The end of the planetary gear shaft 511 is designed with an eccentric boss to prevent rotation after installation. The left center gear 502 is connected to the first-stage planetary carrier 412 by spline sleeve 503 with connecting screws and anti-loosening assembly 501, and is axially positioned on both sides by wear-resistant rings 512. Power is transmitted to the output internal gear ring 508 via planetary gears 509. The output internal gear ring 508 is connected to the cutting drum via hexagonal, square, or involute splines. A floating seal is installed between the floating seal seat and the output internal gear ring 508. The floating seal moving ring seat is mounted on the planetary carrier 505 using fasteners and shear pins. The metal ring seal 520, rotating combination ring, V-ring, and static seal 519 work together to seal the connection between the cutting reducer's oil chamber and the cutting drum. The static seal 519 is used extensively throughout the system. Multiple oil holes are machined on the planetary carrier 505 for oil injection, oil drainage, and venting.

[0037] Please refer to Figure 7 and Figure 8The forced lubrication and cooling system 6 includes a pump mounting base 602, on both sides of which are provided a pump outlet pipe assembly 601 and a pump suction pipe assembly 603. A sealing gasket 604 is installed on the pump mounting base 602, and a vent plug 605 is installed on the pump outlet pipe assembly 601 and the pump suction pipe assembly 603. A lubrication pinion 606, a gear pump 607, and a second fastener 608 are also installed on the pump mounting base 602.

[0038] The forced lubrication and cooling system 6 is connected to the upper front of the housing 1 via the pump mounting base 602 using fasteners. It is recessed into the housing 1, and the connection point with the housing 1 is sealed with a static sealing gasket 604 to prevent external coal dust from entering the reducer. The lubrication pinion 606 and the gear pump 607 are connected to the pump mounting base 602 using a second fastener 608. The lubrication pinion 606 meshes with the lubrication gear 407 in the III-axis planetary assembly, serving as the power source for the gear pump 607. The gear pump 607 draws high-temperature lubricating oil through a suction pipe located within the housing, which is then pumped out through the pump suction port assembly 603 and fed into the cooling system via the pump outlet assembly 601 for cooling. The cooled lubricating oil is then injected into key parts of the reducer via a pre-existing return oil line on the housing 1, providing lubrication and cooling to the transmission gears and bearings. A safety relief valve is connected to the corresponding position of the pump suction port assembly. When the oil pressure reaches 2.5 MPa, indicating a malfunction in the cooling system, the check valve opens, and the lubricating oil from the reducer's oil chamber is injected into the housing without cooling, preventing oil shortage in the reducer. Two vent plugs 605 are installed above the pump mounting base 602; one is for the main oil chamber, and the other is connected to the output planetary head assembly via a channel.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cutting reducer for a horizontal shaft tunneling machine, characterized in that: Includes a housing (1), inside which are fasteners connected an I-axis assembly (2), an II-axis assembly (3), a forced lubrication and cooling system (6), a III-axis planetary assembly (4), and an output planetary head assembly (5). The housing (1) is also provided with an oil suction pipe (7), and the pump oil suction pipe assembly of the forced lubrication and cooling system (6) is connected to the oil suction pipe (7) through a high-pressure hose assembly. The I-axis assembly (2) includes a mounting base (208) and a sensor (201). The mounting base (208) contains a first shaft body. A sealing bushing (204) is mounted on the mounting base (208). An input end seal (203) and a first bearing cap (202) are provided on the outer side of the sealing bushing (204). A first retaining ring (205) is also mounted on the inner side of the mounting base (208). A first bearing (206) is mounted inside the mounting base (208) on the inner side of the retaining ring (205). A spacer (207) is mounted on one side of the first bearing (206). An output end seal (209) and a small helical gear (210) are mounted on one end of the inner side of the mounting base (208).

2. The cutting reducer for a horizontal shaft tunneling machine according to claim 1, characterized in that: The II-axis assembly (3) includes a second shaft body. A second retaining ring (301) and a large helical gear (302) are installed at one end of the second shaft body. A second bearing (304) is installed on the outer side of the middle part of the second shaft body. A dustproof gasket (303) is provided at the connection between the second shaft body and the housing. A bearing removal ring (305) is installed on one side of the second bearing (304). A small bevel gear shaft (306) is provided on the outer side of the second shaft body. A bearing spacer (307) is installed on the side of the bearing removal ring (305). A bearing cup (308) is provided on the outer side of the second bearing (304). A second bearing cap (309) and a gear spacer (310) are installed on the other side of the second bearing (304).

3. The cutting reducer for a horizontal shaft tunneling machine according to claim 2, characterized in that: The III-axis planetary assembly (4) includes a first-stage sun gear shaft (401). An oil seal bushing (402) is installed on the outer side of one end of the first-stage sun gear shaft (401). A III-axis bearing (403) is provided on the outer side of the first-stage sun gear shaft (401). A third bearing cap (404) is installed on the outer side of the III-axis bearing (403). An anti-shear pin fastener (405) is also installed on the outer side of the first-stage sun gear shaft (401). A large bevel gear (406) is installed on one side of the anti-shear pin fastener (405). The other end of the first-stage sun gear shaft (401) is equipped with a lubricating large gear (407) and a seal (408). A first-stage internal gear ring (409) is also installed on the outer side of the first-stage sun gear shaft (401). A first-stage planetary carrier (412) and a first-stage planetary gear bearing (411) are provided on the inner side of the first-stage internal gear ring (409). A first-stage planetary carrier (412) is connected to a first-stage planetary gear (410) through the first-stage planetary gear bearing (411). A planetary cap connecting the first fastener (413) and a wear-resistant spacer (414) are installed on the inner side of the first-stage planetary carrier (412).

4. The cutting reducer for a horizontal shaft tunneling machine according to claim 3, characterized in that: The output planetary head assembly (5) includes connecting screws and anti-loosening assembly (501), a left center gear (502), and a planet carrier (505). A spline sleeve (503) is installed on the left center gear (502), and the left center gear (502) is connected to the right center gear (504) through the spline sleeve (503). A bearing pressure ring (506) and a cylindrical bearing (507) are installed on the inner side of the planet carrier (505). An output internal gear ring (508), planet gears (509), and a planet bearing assembly (510) are also installed on the inner side of the planet carrier (505). The planet bearing assembly (510) is internally equipped with... The assembly includes a planetary gear shaft (511) and an output bearing (514). A wear-resistant ring (512) and a limiting ring (513) are installed on the side of the planetary gear shaft (511). An output bearing end cap (515) is installed at one end of the output bearing (514). An output bearing pressure cap (516) is installed on the outside of the output bearing end cap (515). The output planetary head assembly (5) also includes a cylindrical bearing positioning block assembly (517), a shear fastener (518), and a static seal (519). A metal ring seal (520) and a rotating combination ring (521) are installed on one side of the static seal (519).

5. A cutting reducer for a horizontal shaft tunneling machine according to claim 4, characterized in that: The forced lubrication and cooling system (6) includes a pump mounting base (602), on both sides of which are provided a pump outlet pipe assembly (601) and a pump suction pipe assembly (603). A sealing gasket (604) is installed on the pump mounting base (602), and a vent plug (605) is installed on the pump outlet pipe assembly (601) and the pump suction pipe assembly (603). A lubrication pinion (606), a gear pump (607), and a second fastener (608) are also installed on the pump mounting base (602).

6. A cutting reducer for a horizontal shaft tunneling machine according to claim 1, characterized in that: The I-axis assembly (2) is provided with a first oil reservoir (211) and a second oil reservoir (212), and a cooling water channel (213) and a first lubricating oil channel (214) are provided at one end of the mounting base (208).

7. A cutting reducer for a horizontal shaft tunneling machine according to claim 6, characterized in that: The mounting base (208) has an oil injection hole (215) in the middle, a closed oil cavity (216) in the inner side of the mounting base (208), and a second lubrication oil passage (217) in the other end of the mounting base (208).

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