CN215257760U - Internal circulation cooling structure of cutting speed reducer of transverse shaft type heading machine - Google Patents

Abstract

The utility model belongs to the technical field of colliery is mining equipment spare part in the pit, specifically is a horizontal shaft formula entry driving machine cutting reduction gear inner circulation cooling structure. The water distribution device comprises a first bevel gear connected with an external power source, wherein the first bevel gear is fixed on a bearing seat through a bearing, a plurality of water cavities are arranged on the periphery of the first bevel gear, the plurality of water cavities are communicated with one another through an external pipeline, a water outlet and a water inlet are formed in the top of each water cavity, a water drainage hole is formed in the bottom of each water cavity, the bearing seat is installed in a shell, a water distribution disc is fixed on an inner gear ring, the inner gear ring is fixed on the shell, an output shaft is fixed on the gear ring through the bearing and can rotate relatively, and a seal is installed at the position of the water distribution disc.

Description

Internal circulation cooling structure of cutting speed reducer of transverse shaft type heading machine

Technical Field

The utility model belongs to the technical field of colliery is mining equipment spare part in the pit, specifically is a horizontal shaft formula entry driving machine cutting reduction gear inner circulation cooling structure.

Background

At present, China has dozens of models of development machines, is mainly used for developing tunnels under coal mines and can be used for developing tunnels with various sections with the hardness f of coal rock less than or equal to 10. The cutting part is a working mechanism of the development machine and is a direct part of the development machine for crushing coal rocks, wherein the horizontal shaft development machine mainly comprises a cutting motor for providing a power source, a speed reducer for realizing transmission, speed reduction and large torque transmission and a cutting head for crushing the coal rocks. The speed reducer is used as a key link of intermediate transmission, once a fault occurs underground, the whole machine cannot be driven normally, and the construction period is delayed. The cutting speed reducer is used as a power transmission part, and is small in size and compact in internal structure, temperature rise is fast in the working process, the internal temperature of the speed reducer can often exceed the application range of a sealing element due to the fact that natural cooling is only adopted and corresponding cooling measures are not available, aging failure of the sealing element is caused, lubricating oil leakage occurs, and finally the speed reducer is damaged.

At present, most of cutting reducers of transverse shaft type development machines adopt external circulation cooling, namely, lubricating oil in the reducers is conveyed to the outside of the reducers through an oil pump and a pipeline and then conveyed back to the reducers after passing through a cooling system. The main disadvantages are as follows: when the speed reducer stops working, oil in the pipeline flows back to the speed reducer under the action of gravity, when the speed reducer is started and stopped frequently at the lowest working position, lubricating oil cannot reach a lubricating point in time due to the fact that an external circulating pipeline is long (nearly 10 meters), and the temperature of a high-speed stage is increased rapidly; secondly, an external pipeline is positioned above the cutting speed reducer, the top of the external pipeline is an un-anchored hollow top, broken coal rocks can be broken at any time and fall to damage the pipeline, and even if protection is provided, the fault also occurs underground; and thirdly, the external circulation cooling is to cool the lubricating oil and then cool the gear and the bearing through the lubricating oil, and because the lubricating oil passes through the pipeline and the zigzag hole system, the pressure and the flow can be reduced, the temperature can be increased, and the effect is not ideal enough. And fourthly, the design of gear ring output, because the output end planet carrier is fixed, the uppermost planet wheel needs to be forcibly lubricated, the lubricating points are increased, all the lubricating points can be lubricated, the sizes of the oil way apertures are different, and under the condition that the oil quality is deteriorated, the risk that the small-diameter lubricating oil way is blocked possibly exists. Fifthly, when workers check the oil level, the screw plug needs to be removed, and the lubricating oil pollution is easily caused. And sixthly, because the gear ring is adopted for output, the pipeline of the inner spraying system inevitably flows through a plurality of parts in the speed reducer, certain hidden dangers exist under the working environment of strong vibration, and once leakage occurs, the normal work of the whole speed reducer is influenced. And seventhly, because the gear ring is adopted for output, and the spline is adopted at the connecting part of the gear ring and the cutting head, the gap is large, the gear ring is easy to wear and repair, and the cost is high.

Disclosure of Invention

The utility model discloses a solve horizontal shaft type entry driving machine cutting reduction gear outer circulative cooling's problem, provide a horizontal shaft type entry driving machine cutting reduction gear inner circulative cooling structure.

The utility model adopts the following technical proposal: an internal circulation cooling structure of a cutting reducer of a horizontal shaft type tunneling machine comprises a first bevel gear connected with an external power source, the first bevel gear is fixed on a bearing seat through a bearing I, a plurality of water cavities are arranged on the periphery of the first bevel gear and are communicated with each other through an external pipeline, a water outlet and a water inlet are arranged at the top of each water cavity, a water drain hole is arranged at the bottom of each water cavity, the bearing seat is arranged in a shell, a seal I is arranged at the input end of the first bevel gear through a bearing cover, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixed with a horizontal shaft to rotate together, the horizontal shaft is fixed in the shell through a bearing II, the horizontal shaft is connected with a first-stage sun gear to rotate together, the first-stage sun gear is meshed with a first-stage planet gear, the first-stage planet gear is fixed on a first-stage planet carrier through a first-stage planet shaft, and the first-stage planet gear is meshed with an inner gear ring, the first-stage planet carrier is connected with the second-stage sun gear to rotate together, the second-stage sun gear is meshed with the second-stage planet gear, the second-stage planet gear is fixed on the second-stage planet carrier through a second-stage planet shaft and is meshed with an inner gear ring, the second-stage planet carrier is connected with an output shaft, the output shaft is connected with an external cutting drum through a cross key and screws, a water distribution disc is fixed on the inner gear ring, the inner gear ring is fixed on a shell, the output shaft is fixed on the gear ring through a bearing III and can rotate relatively, and a seal II is installed at the position of the water distribution disc.

A lubricating oil channel communicated with the first bevel gear, the bearing I and the bearing seat of the first bevel gear is formed in the shell, and the water cavity is surrounded on the periphery of the lubricating oil channel.

The water cavity is provided with three groups, wherein two groups are arranged above the first bevel gear side by side, the lubricating oil passage is positioned between the two groups of water cavities side by side, and the other group of water cavity is arranged below the first bevel gear.

An inner spraying channel is arranged on the shell, and the inlet end of the inner spraying channel is communicated with the inner spraying water hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the reducer shell is provided with three water cavities, the volume is large, the high-speed level is wrapped, and the cooling effect is better.

2. The water inlet and the water outlet can be interchanged, the using effect is not influenced, and the installation and the operation are simple and convenient.

Casing side-mounting has new utility model's transparent oil level indicating device, need not to dismantle, makes things convenient for the workman to judge the oil level directly perceived, prevents to pollute.

3. Adopt the planet carrier output, interior spraying water route does not pass through the reduction gear inside, and the reliability is higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side sectional view of the present invention;

FIG. 3 is a schematic structural view of a lubricating oil passage;

FIG. 4 is a perspective view of the present invention;

in the figure 1-first bevel gear, 2-bearing cap, 3-seal I, 4-bearing I, 5-bearing seat, 6-housing, 7-second bevel gear, 8-cross shaft, 9-bearing II, 10-first sun gear, 11-first planet shaft, 12-first planet gear, 13-first planet carrier, 14-second sun gear, 15-inner ring gear, 16-second planet shaft, 17-second planet gear, 18-second planet carrier, 19-output shaft, 20-cross key, 21-screw, 22-water distributor, 23-bearing III, 24-seal II, 25-joint I, 26-hose I, 27-pump, 28-driven wheel, 29-pump power wheel, 30-hose II, 31-connector II, 32-lubricating oil channel, 33-oil pool, 34-inner spray channel, 35-transparent oil level indicator, 36-water outlet, 37-water inlet, 38-water cavity, 39-water discharge hole and 40-inner spray water hole.

Detailed Description

The present invention will be further explained with reference to the drawings

As shown in fig. 1 and 2, a first bevel gear 1 is connected with an external power source, the first bevel gear 1 is fixed on a bearing seat 5 through a bearing I4, the bearing seat 5 is arranged in a shell 6, a seal I3 is arranged at the input end through a bearing cover 2 to prevent lubricating oil from leaking, the first bevel gear 1 is engaged with a second bevel gear 7, the second bevel gear 7 is fixed to rotate together with a cross shaft 8, the cross shaft 8 is fixed in the shell 6 through a bearing II9, the cross shaft 8 is connected with a first stage sun gear 10 to rotate together, the first stage sun gear 10 is engaged with a first stage planet gear 12, the first stage planet gear 12 is fixed on a first stage planet carrier 13 through a first stage planet shaft 11, the first stage planet gear 12 is engaged with an inner gear ring 15, the first stage planet carrier 13 is connected with a second stage sun gear 14 to rotate together, the second stage sun gear 14 is engaged with a second stage planet gear 17, the second stage planet gear 17 is fixed on a second stage planet carrier 18 through a second stage planet shaft 16, the second-stage planet gear 17 is meshed with an inner gear ring 15, the second-stage planet carrier 18 is connected with an output shaft 19, the output shaft 19 is connected with an external cutting drum through a cross key 20 and a screw 21, a water distribution disc 22 is fixed on the inner gear ring 15, the inner gear ring 15 is fixed on the shell 6, the output shaft is fixed on the gear ring 15 through a bearing III23 and can rotate relatively, and a seal II24 is arranged at the water distribution disc 22 to prevent water leakage.

As shown in figure 2, the internal circulation power source is from a pump power wheel 29, the pump power wheel 29 is fixed with the cross shaft 8 to rotate together, the pump power wheel 29 is meshed with a pump driven wheel 28 to drive the driven wheel 28 to rotate, and the pump driven wheel 28 is fixed with the pump 27 to drive the pump 27 to work.

As shown in fig. 2, the pump 27 is connected to a connector 31 fixed to the bottom of the casing through a hose 30, and is directly connected to the connector 25 of the high-speed stage lubricating oil passage on the casing 6 through a short hose 26. The pump 27 is turned and the oil in the sump is sucked into the pump through the hose 30 and the nipple 31, flows through the hose 26, reaches the high-speed stage lubrication passage, finally reaches the high-speed stage bearing I4 and the seal I3, and when the circulating oil reaches a certain amount, passes through the bypass passage and the gap between the balls of the bearing 4, and finally returns to the sump. The screw thread is general screw thread, compares the pipeline of steel construction easy and simple to handle, and the required precision is low, easily installs and dismantles.

As shown in fig. 3, the housing 6 is provided with a transparent oil level indicator 32 on the side, and three water chambers are distributed around the high-speed stage and the lubrication channel, so that the cooling is more direct. The three water cavities are communicated with each other through an external pipeline, and an outlet can be externally connected with the inner part and the outer part of the heading machine for spraying.

As shown in figure 1, the left side and the right side of the inner spraying waterway are independent, the water inlet is positioned at the top of the shell 6 and enters the inner channel of the inner gear ring 15 from the inner channel of the shell and finally reaches the inner channel of the water distribution plate 22, the sealing is arranged between the channels of two different parts to prevent water leakage, and as all the channels do not pass through the inner cavity of the speed reducer, the emulsification of oil liquid in the speed reducer cannot be caused.

Claims (4)

1. The utility model provides a horizontal shaft type entry driving machine cutting reduction gear inner circulation cooling structure which characterized in that: comprises a first bevel gear (1) connected with an external power source, the first bevel gear (1) is fixed on a bearing seat (5) through a bearing I (4), a plurality of water cavities (38) are arranged on the peripheral side of the first bevel gear (1), the water cavities (38) are communicated with each other through an external pipeline, a water outlet (36) and a water inlet (37) are arranged at the top of each water cavity (38), a water drainage hole (39) is arranged at the bottom of each water cavity (38), the bearing seat (5) is installed in a shell (6), a seal I (3) is installed at the input end of the first bevel gear (1) through a bearing cover (2), the first bevel gear (1) is engaged with a second bevel gear (7), the second bevel gear (7) is fixed with a transverse shaft (8) to rotate together, the transverse shaft (8) is fixed in the shell (6) through a bearing II (9), the transverse shaft (8) is connected with a first-stage sun gear (10) to rotate together, a first-stage sun wheel (10) is meshed with a first-stage planet wheel (12), the first-stage planet wheel (12) is fixed on a first-stage planet carrier (13) through a first-stage planet shaft (11), the first-stage planet wheel (12) is meshed with an inner gear ring (15), the first-stage planet carrier (13) is connected with a second-stage sun wheel (14) to rotate together, the second-stage sun wheel (14) is meshed with a second-stage planet wheel (17), the second-stage planet wheel (17) is fixed on a second-stage planet carrier (18) through a second-stage planet shaft (16), the second-stage planet wheel (17) is meshed with the inner gear ring (15), the second-stage planet carrier (18) is connected with an output shaft (19), the output shaft (19) is connected with an external cutting drum through a cross key (20) and a screw (21), a water distribution disc (22) is fixed on the inner gear ring (15), and the inner gear ring (15) is fixed on a shell (6), the output shaft is fixed on the gear ring (15) through a bearing III (23) and can rotate relatively, and a seal II (24) is arranged at the water distribution disc (22).

2. The internal circulation cooling structure of the cutting reducer of the transverse shaft type heading machine according to claim 1, characterized in that: and a lubricating oil channel (32) communicated with the first bevel gear (1), a bearing I (4) and a bearing seat (5) of the first bevel gear is formed in the shell (6), and the water cavity (38) is surrounded on the peripheral side of the lubricating oil channel (32).

3. The internal circulation cooling structure of the cutting reducer of the transverse shaft type heading machine according to claim 2, characterized in that: the water cavities (38) are provided with three groups, wherein two groups of water cavities are arranged above the first bevel gear (1) side by side, the lubricating oil channel (32) is positioned between the two groups of water cavities (38) side by side, and the other group of water cavities (38) is arranged below the first bevel gear (1).

4. The internal circulation cooling structure of the cutting reducer of the transverse shaft type heading machine according to claim 3, characterized in that: an inner spraying channel (34) is arranged on the shell (6), and the inlet end of the inner spraying channel (34) is communicated with the inner spraying water hole (40).

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