CN101660596B - High-power composite gear front speed up and back speed up speed regulation type hydraulic coupling transmission device - Google Patents

Abstract

The utility model relates to a speed-regulating hydraulic coupler transmission device of a large-power compound gear capable of speeding up front and rear. The device consists of a hydraulic coupler, a front speed-up herringbone gear, a rear speed-up herringbone gear and an oil line system; the hydraulic coupler adopts a speed regulation mode of adjusting a telescopic conduit at an outlet; the front part and the rear part of the hydraulic coupler are provided with a primary herringbone gear speed-up transmission mechanism respectively; the input rotating speed and capability for transmitting power of the hydraulic coupler are improved by the front speed-up gear transmission, thus reducing the specification of the coupler; the oil line system comprises a working oil pump, a main lubricating oil pump and an auxiliary lubricating oil pump that are gear oil pumps. The device leads a motor and a working machine to match well, improves the transmission quality, improves the running efficiency of the working machine, leads a water supply pump of a boiler to work at a high-efficiency area all the time, greatly improves the working efficiency of the water supply pump of the boiler by the hydraulic speed regulation, saves a large amount of electric energy, and greatly reduces the consumption of energy resource.

Description

High-power composite gear front speed up and back speed up speed regulation type hydraulic coupling transmission device

technical field

The invention relates to a high-power composite gear speed-increasing front speed-up rear speed-regulating type hydraulic coupling transmission device applied to large-scale boiler feed water pump mechanical equipment.

Background technique

A fluid coupling transmission is a combination of a fluid coupling and a gear transmission element. The speed-regulating hydraulic coupling transmission device can realize stepless adjustment of the output speed under the condition that the motor speed is constant. It can improve the starting ability of the motor, reduce shock and vibration, and coordinate the load distribution of multi-machine drives. It is also easy to Realize remote control and automatic control and can save a lot of electric energy. It has no limit on the voltage of the motor, and can adapt to high voltage, high power, and high speed conditions. It is currently widely used in various mechanical equipment such as fans, water pumps, and material transportation.

The speed-adjusting coupling transmission device is divided into: front gear speed-up type, rear gear speed-down type, rear gear speed-up type, composite gear front increase and rear decrease type, compound gear front increase and rear increase type, vertical rear Set gear reduction type, combination set type and multiple combination type. A pair of speed-up gears are arranged in front of the hydraulic coupling, the purpose of which is to increase the input speed and power transmission capability of the coupling and reduce the specification of the coupling. A pair of reduction gears are arranged behind the coupling to meet the matching requirements of low-speed working machines. A pair of speed-increasing gears are arranged behind the coupling, the purpose is to increase the output speed to reach the speed required by the working machine. The vertical rear gear speed reduction type is a reduction device with a right-angle shaft bevel gear drive behind the coupling to meet the needs of vertical low-speed machinery. The combined set type is a complete set of unit that combines a speed-regulating hydraulic coupling with a speed increaser or a reducer to form a unified control and centralized oil supply. The multi-combination type combines the speed-regulating fluid coupling with the planetary gear speed-regulating system, hydraulic torque converter, hydraulic reducer, hydraulic clutch, etc., to give full play to the advantages of each component. However, this kind of transmission device has a long kinematic chain and a complicated structure.

The characteristic of hydraulic speed regulation and energy saving is that the greater the power of the working machine, the more obvious the effect of speed regulation and energy saving. With the development of my country's economic construction, the power and installed capacity of equipment used in power generation, metallurgy, chemical industry, petroleum, mining and other fields have increased very rapidly. Wide application has very urgent practical significance. German VOITH company is the world's most famous hydraulic product company, and the speed-regulating hydraulic coupling products used for large-scale pumps and fans for speed regulation and energy saving account for more than 1/3 of its products. At present, the company has products with a speed of 20,000r/min and a maximum transmission power of 55,000kW, and the speed-adjustable hydraulic coupling is still developing to a higher power for energy saving. At present, the power range of hydraulic coupling products independently produced in my country is 50-4200kw, which can only meet the general supporting needs of small and medium power fans, water pumps and other mechanical equipment.

CN03210828.1 discloses a "hydraulic coupling transmission box", CN93225262.1 discloses a "combined speed-increasing type speed-regulating hydraulic coupling", and CN02206267.X discloses a "hydraulic coupling forward gear box" , CN01212153.3 discloses "hydraulic-gear transmission device of pumping unit", CN200720032215.7 discloses "vertical hydraulic speed regulation positive carriage", CN200710173259.6 discloses "centrifugal diversion intelligent speed regulation hydraulic coupling Body structure", CN200620093870.9 discloses "flexible start-up speed regulating device for belt conveyor", CN200520035187.5 discloses "high-power drilling pump driving device", and CN89217153.7 discloses "energy-saving speed-limiting lifting driving device". CN200610116275.7 discloses a "centrifugal diversion valve-controlled speed-regulating type hydraulic coupling". Most of these inventions are about the structural design of small and medium power speed-regulating hydraulic coupling transmissions applied to vehicles and drilling equipment, and a few of them are related to the control of the liquid filling volume of the working chamber of the hydraulic coupling.

Contents of the invention

The purpose of the present invention is to address the above-mentioned shortcomings of the prior art, and provide a high-power composite gear front speed-up and rear speed-up speed-regulating type hydraulic coupling transmission device matched with a large boiler water supply pump.

The purpose of the present invention is achieved through the following technical solutions:

The high-power composite gear front speed up and back speed up speed regulating type fluid coupling transmission device includes the input shaft 18 fixed on the lower box body 2 through the sliding bearing IV17 and sliding bearing V21, and the right end of the input shaft 18 is equipped with an input end gear coupling. The shaft device 22 has a conical pinion 43 on the left end, and the conical bull gear 13 matched with the conical pinion 43 is connected with the oil pump shaft 16 by a key. The oil pump shaft 16 is installed on the support plate 46 through the angular contact ball bearing 44, and works Oil pump 14 and main lubricating oil pump 15 are connected to oil pump shaft 16 through duplex gears, input shaft 18 is in interference connection with front speed increasing herringbone gear 19, and pump wheel shaft 20 is fixed on lower box body 2 through sliding bearing VI23 and sliding bearing VII25 , the pump wheel shaft 20 is designed in the form of a gear shaft to cooperate with the front speed increasing herringbone gear 19, the pump wheel shaft 20 and the pump wheel 28 are connected by bolts at the pump wheel shaft end, the pump wheel shaft end thrust bearing 42 is installed at the right end of the pump wheel shaft 20, and Positioned by the pump shaft end gland 41, the turbine shaft 4 is fixed on the lower box body 2 through the sliding bearing I7 and the sliding bearing X35, the turbine shaft 4 is in interference connection with the rear speed increasing herringbone gear 3, and the turbine shaft 4 is connected to the The turbine 30 is connected with bolts, the left end of the turbine shaft 4 is equipped with a turbine shaft end thrust bearing 6, and is positioned by the turbine shaft end gland 5, the output shaft 11 is fixed on the lower box body 2 through the sliding bearing II9 and the sliding bearing III12, the output shaft 11 is in interference connection with the rear speed-up herringbone pinion 10, the rear speed-up herringbone gear 3 cooperates with the rear speed-up herringbone pinion 10, and the left end of the output shaft 11 is equipped with an output shaft end gear coupling 8 , the auxiliary lubricating oil pump assembly 24 is fixedly connected to the box body, and the oil discharge mechanism 1 is supported by the conduit support seat welded on the lower box body 2, and the conduit can telescopically move in the outlet oil cavity of the hydraulic coupling, and the support plate 45 and 46 are welded on the lower box body 2, the connection between the input shaft 18 and the motor adopts the input shaft end gear coupling 22, the connection between the output shaft 11 and the working machine adopts the output shaft end gear coupling 8, and the hydraulic coupling The working chamber is a peach-shaped working chamber, the hydraulic coupling is fixedly connected by the pump wheel 28 and the pump wheel shaft 20, the turbine 30 is fixedly connected with the turbine shaft 4, the pump wheel scraper plate 27 is supported on the bearing seat 38, and is connected with the pump The wheel 28 is fixedly connected, the back shell 33 and the cylinder partition 32 are both supported on the conduit housing 34 and fixedly connected with the rotating cylinder 31, and the rotating cylinder 31 is connected with the pump wheel 28 by bolts at the other end. There is an annular through hole on the cylinder partition 32, the pump wheel 28 and the turbine 30, the back shell 33 and the cylinder partition 32, the pump wheel scraper plate 27 and the pump wheel shell, the rotating cylinder 31 and the pump wheel 28 and The space formed between the turbine shells is connected; the oil circuit system is composed of a working oil pump 14, a main lubricating oil pump 15 and an auxiliary lubricating oil pump 24, all of which are gear oil pumps. Before the hydraulic coupling is started, it is assisted by the auxiliary motor. Lubricating oil pump 24, the oil enters each sliding bearing through the duplex filter for lubrication. After the hydraulic coupling is started, the oil pump starts to supply oil to the working chamber of the hydraulic coupling through the throttle, and the oil discharged through the conduit passes through the cooler At the same time, when the pressure in the filter reaches the specified lubricating pressure, the auxiliary oil pump 24 stops working, and the main lubricating oil pump 15 starts to lubricate the sliding bearings and herringbone gears. A safety valve is installed in the oil circuit system, and each bearing A temperature sensor is installed at the center to ensure the safe operation of the oil circuit system.

The speed-up ratio of the front speed-up herringbone gear 19 and the gear of the pump wheel shaft 20 is 2.0-2.10, and the speed-up ratio of the back speed-up herringbone gear 3 and the back speed-up herringbone pinion 10 is 1.70-1.80.

The purpose of the present invention can also be achieved through the following technical solutions:

The speed-up ratio of the front speed-up herringbone gear 19 and the gear of the pump wheel shaft 20 is 2.0-2.10, and the speed-up ratio of the back speed-up herringbone gear 3 and the back speed-up herringbone pinion 10 is 1.70-1.80; The fixed connections described above are all bolt connections; the gap between the pump wheel 28 and the turbine 30 is 3mm-8mm.

Beneficial effects: the device achieves a good matching relationship between the motor and the working machine, improves the transmission quality, improves the operating efficiency of the working machine, makes the boiler water supply pump always work in the high-efficiency zone, and greatly saves energy through hydraulic speed regulation.

Description of drawings

Figure 1 is a top view structural diagram of a high-power composite gear with a front speed increase and a rear speed speed regulation type hydraulic coupling transmission.

Fig. 2 is a front view of a high-power composite gear with a front speed increase and a rear speed speed regulation type fluid coupling transmission device.

Fig. 3 is a cross-sectional view on the input shaft surface of the transmission device of the fluid coupling.

Figure 4 is a diagram of the oil circuit system of the high-power composite gear with a front speed increase and a rear speed speed regulation type hydraulic coupling transmission.

1 oil discharge mechanism, 2 lower box, 3 rear speed-increasing herringbone gear, 4 turbine shaft, 5 turbine shaft end gland, 6 turbine shaft end thrust bearing, 7 sliding bearing I, 8 output shaft end gear coupling Device, 9 sliding bearing II, 10 rear speed-up herringbone pinion, 11 output shaft, 12 sliding bearing III, 13 conical large gear, 14 working oil pump, 15 main lubricating oil pump, 16 oil pump shaft, 17 sliding bearing IV, 18 input Shaft, 19 front speed increase herringbone gear, 20 pump wheel shaft, 21 sliding bearing V, 22 input shaft end gear coupling, 23 sliding bearing VI, 24 auxiliary lubricating oil pump assembly, 25 sliding bearing VII, 26 sliding bearing VIII, 27 pump wheel oil scraper plate, 28 pump wheel, 29 sliding bearing IX, 30 turbine, 31 rotating cylinder, 32 cylinder partition, 33 back shell, 34 conduit casing, 35 sliding bearing X, 36 gear lubricating pipe , 37 bearing seat and oil inlet chamber, 38 bearing seat, 39 oil tank, 40 upper box, 41 pump wheel shaft end gland, 42 pump wheel shaft end thrust bearing, 43 conical pinion, 44 angular contact ball bearing, 45, 46 support plate.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

According to the performance parameters of the KSB type motor and the large-scale boiler water supply pump, the transmission scheme of the speed-regulating hydraulic coupling is determined as the compound gear speed-up before the speed-up and the speed-up after the speed-up. The rated power transmitted by the invention is 12000kw, the rated input speed is 3000r/min, and the rated output speed is 10000r/min. The purpose of this transmission scheme is to improve the input speed and transmission power capacity of the hydraulic coupling, while reducing the specification of the coupling and meeting the requirements of the input speed of the boiler water pump.

Determine the original design parameters of the hydraulic coupling based on the performance parameters of the KSB type motor and the large boiler water supply pump: rated transmission power P = 12000kw, rated input speed n = 6000r/min, rated speed ratio i = η = 0.97-0.985 . The selected working cavity type is a peach-shaped working cavity, and the calculation formula of the effective diameter D of the working cavity is: $\mathrm{D.}=\sqrt[5]{\frac{{9550P}_{\mathrm{no}}}{{\mathrm{\&lambda;}}_B{\mathrm{\&rho;<figure-callout\; id="3"\; label="gn\; B"\; filenames="H2009100671607E00011.png"\; state="\{\{state\}\}">gn</figure-callout>}}_B^{}}}.$ In the formula: D-effective diameter, m; P _n -rated transmission power, kw; λ _B -moment coefficient of pump wheel under rated working conditions, min ² /m; ρ-density of working liquid, kg/m ³ ; g-gravity Acceleration, m/s ² ; n _B - pump wheel speed, r/min. Substituting the specific parameters, rounding the calculated value with reference to the standard, and determining the size of the working chamber - the effective diameter D = 500mm.

The formula for calculating the number of blades is Z=7.6×D ^0.3 , where: Z—number of blades; D—effective diameter, mm. Determine the number of blades of the pump impeller to be 48, and the number of blades of the turbine to be 51. The shape and structure of the blades are radial straight blades with a zero inclination angle, and the blades are designed in a structural form with unequal thickness in the axial direction and chamfered inner edges. In order to prevent the pulsating impact of the fluid, the arrangement relationship of the blades is evenly arranged in the impeller. The manufacturing material of the coupling is 35cr2WMo, and the size related to the strength of the impeller and the blade is finally determined after the finite element strength analysis on the basis of similar design.

The hydraulic coupling part of the transmission device is composed of a pump wheel 28, a turbine 30, a rotating cylinder 31, a cylinder partition 32, a pump wheel oil scraper 27, a back shell 33, an oil discharge mechanism 1 and a conduit housing 34. There is a gap of 5 mm between the wheel 28 and the turbine 30, and each rotating assembly is connected with bolts. The space formed between the pump wheel 28 and the turbine 30, the back casing 33 and the cylinder partition 32, the pump wheel oil scraper 27 and the pump wheel casing, the rotating cylinder 31, the pump wheel 28, and the turbine wheel 30 casing is all communicated. When the hydraulic coupling is working, the working oil pumped out by the working oil pump enters the oil inlet chamber and is driven by the oil scraper plate of the pump wheel, and then enters the coupling working chamber through the oil inlet on the pump wheel 28 . After the coupler starts to work, since the spaces inside the coupler are connected, the liquid level of the working oil is at the same height in each space, and the height of the liquid level between the back shell and the cylinder partition can be adjusted through the conduit, so that the work of the coupler can be changed. The liquid filling volume in the cavity can realize the adjustment of the output speed and torque of the hydraulic coupling.

The design and calculation of the contact strength of the tooth surface, the bending strength of the gear tooth and the adhesive bearing capacity of the herringbone gear are carried out. The gear material of the front and rear speed-up herringbone gears is 18cr2Ni4WA, and the gear precision is 4th grade.

The specific parameters of the front speed-up gear are as follows: the number of teeth of the pinion Z ₁ =23, the number of teeth of the large gear Z ₂ =47; the front speed-up ratio i=2.04; the width-to-diameter ratio of the gear ψ _d =0.8; Number m _n =12mm; the center distance of the front speed increasing gear a=485mm; the helix angle β=29.763°; the indexing circle diameter d ₁ of the small gear =317.941mm, the indexing circle diameter d ₂ of the bull gear =649.705mm; The width B of the herringbone gear = 590mm (including the undercut 70mm).

The specific parameters of the rear speed-up gear are as follows: the number of teeth of the pinion Z ₁ =25, the number of teeth of the large gear Z ₂ =43; the front speed-up ratio i=1.72; the width-to-diameter ratio of the gear ψ _d =0.8; Number m _n =12mm; the center distance of the front speed increasing gear a=485mm; the helix angle β=32.729°; the diameter of the indexing circle of the pinion gear d ₁ =356.617mm, the diameter of the indexing circle of the bull gear d ₂ =613.382mm; The width B of the herringbone gear=640mm.

According to the performance parameters of the prime mover and the working machine and the specifications of the matched hydraulic coupling, the transmission ratio is allocated reasonably. Considering the manufacturability of the box body so that the axes of the input shaft and the output shaft coincide, since the transmission ratio of the front speed-up gear is not much different from that of the rear speed-up gear, the front speed-up gear can be adjusted by adjusting the helical angle of the herringbone gear. The center distance between the two pairs of gears is equal to that of the rear speed increaser.

The assembly method between the herringbone gear and the transmission shaft is an interference connection, and this positioning method meets the axial and circumferential positioning requirements of the herringbone gear at the same time. The reliability of the torque transmission between the herringbone gear and the shaft at high speed and high power is realized through the interference of the assembly. In order to facilitate assembly, a hydraulic oil port is opened on the herringbone gear. The pump wheel shaft 20 connected with the pump wheel 28 with bolts is designed in the form of a gear shaft. According to the transmission characteristics of the herringbone gear, the input shaft 11 and the output shaft 18 are floating installations in the casing, and the positioning can be automatically realized during work. The support of each transmission shaft and the conduit casing 34 in the casing all adopts sliding bearings. When the hydraulic coupling is working, the working fluid generates a very large axial force on the impeller. The connection between the pump wheel 28, the turbine wheel 30 and the drive shaft is bolted. Since the direction of the axial force is uncertain, the pump wheel shaft 20 and the shaft ends of the turbine shaft 4 are respectively provided with a pump wheel shaft end thrust bearing 42 and a turbine shaft end thrust bearing 6, and the axial force of the working fluid on the impeller is finally borne by the pump wheel shaft end thrust bearing 42 and the turbine shaft end thrust bearing 6 , the pump wheel shaft end gland 41 and the turbine shaft end gland 5 are directly connected to the casing with bolts, so as to realize the axial positioning requirements of the pump wheel shaft 20 and the turbine shaft 4. The box body adopts a split welded box body, and the axes of the input shaft 18 and the output shaft 11 coincide. In order to meet the positioning requirements of the transmission parts, two layers of support plates are arranged inside the box body. Bearing holes are opened on the support plates to fix the sliding bearings. The conduit housing 34 is directly connected with the support plate on the left side of the box body with bolts to meet the positioning requirements. The position corresponding to the side of the lower box is welded with a conduit support seat to connect with the oil discharge mechanism 1 . The wall thickness of the box meets the strength and rigidity requirements of the box. The connection of input shaft 18 and motor, output shaft 11 and working machine all adopts gear coupling.

The oil circuit system of the speed-regulating hydraulic coupling includes the supply and discharge working oil circuit system and the lubricating oil circuit system, and adopts the outlet adjustment telescopic conduit type speed regulation method. The oil circuit system consists of a working oil pump 14, a main lubricating oil pump 15 and an auxiliary lubricating oil pump 24, all of which are gear oil pumps. Before starting the speed-regulating fluid coupling transmission device, the auxiliary lubricating oil pump 24 is driven by the auxiliary motor, and the oil enters the main lubricating oil circuit through the duplex filter and is distributed to each sliding bearing for lubrication. After the transmission device is started, the main oil supply pump starts to work. The pumped working oil is throttled by the throttle and then supplied to the working chamber of the hydraulic coupling. At the same time, the oil is discharged from the conduit. cycle. Simultaneously, when the pressure in the filter reaches the prescribed lubricating pressure, the auxiliary lubricating oil pump assembly 24 stops working, and the main lubricating oil pump 15 begins to undertake the lubricating work of the sliding bearing and the herringbone gear. A safety valve is installed in the oil circuit system, and there are temperature measuring elements at each bearing, which can ensure the safe operation of the oil circuit system.

Before the hydraulic coupling transmission is started, the auxiliary motor drives the auxiliary lubricating oil pump assembly 24, and the pumped oil passes through the duplex filter and then is distributed to the sliding bearings 7, 9, 12, 17, 21, 23,25,26,29,35 and pump wheel shaft 20, turbine shaft 4, output shaft 11, bevel gear 13,43 places. After the motor is started, the power is transmitted to the input shaft 18 through the gear coupling 22 at the input shaft end, and the front speed increasing herringbone gear 19 on the input shaft 18 transmits most of the power to the pump wheel shaft 20 to start the hydraulic coupling The device starts working. After changing the transmission route through the bevel gear at the end of the input shaft 18, a part of the power of the input shaft 18 is transmitted to the working oil pump 14 and the main lubricating oil pump 15. After the main lubricating oil pump 15 starts to work, when the oil pressure in the duplex filter reaches the specified lubricating pressure, the pressure relay cuts off the auxiliary pump motor circuit, the auxiliary lubricating oil pump 24 stops working, and the main lubricating oil pump 15 supplies the oil to the lubricating oil circuit. Lubricating oil is delivered inside. At the same time, the working oil pump starts to work, and the oil is regulated by the throttle to supply oil to the working chamber of the hydraulic coupling. The present invention adopts outlet regulation telescopic conduit. The conduit is equivalent to a rotary jet pump, which can intercept the liquid in the oil ring that rotates with the working chamber. Since the inlet flow supplied by the working oil pump 14 to the working chamber is basically constant, and the oil discharge capacity of the conduit is slightly greater than the oil supply capacity of the oil pump, the flow through the conduit should be equal to the flow of the working oil pump 14 plus the working chamber Flow with varying fill volume. When the speed-regulating hydraulic coupling transmission is in stable operation, the oil discharge volume of the conduit is equal to the oil supply volume of the working oil pump. By adjusting the opening of the conduit (adjusting the distance between the conduit opening and the centerline of the coupler), the liquid filling volume of the coupler working chamber can be adjusted, thereby adjusting the output torque and output speed of the coupler. The output shaft of the coupler transmits the power to the output shaft 11 of the transmission device through the rear speed-up herringbone pinion 10, and the output shaft 11 is connected with the input shaft of the working machine by the gear coupling 8 at the output shaft end to drive the work The boiler boiler feed water pump is working. According to the requirements of the working conditions of the working machine, by changing the liquid filling volume of the coupling working chamber, the stepless adjustment of the output speed of the coupling transmission can be realized without changing the motor speed, thereby saving a lot of electric energy.

The working chamber of the hydraulic coupling is a peach-shaped working chamber, and the effective diameter of the working chamber is D=500mm. The hydraulic coupling is composed of a pump wheel 28, a turbine 30, a rotating cylinder 31, a cylinder partition 32, and a pump wheel scraper plate. 27. The back casing 33, the oil discharge mechanism 1 and the conduit casing 34 are composed. There is a gap of 5mm between the pump wheel 28 and the turbine 30, and bolts are used to connect each rotating component. The pump wheel 28 and the turbine 30, the back casing 33 and the The space formed by the cylinder partition 32, the pump wheel oil scraper plate 27 and the pump wheel 28, the rotating cylinder 31, the pump wheel 28 and the turbine is all connected, and the herringbone gear and the transmission shaft are in interference connection to realize the herringbone gear There is a hydraulic oil port on the herringbone gear. The pump wheel shaft 20 is designed as a gear shaft and connected with the pump wheel 28 through bolts. The input shaft 18 and output shaft 11 are installed floatingly in the box. The positioning is automatically realized during work. The support of each transmission shaft and the conduit casing 34 in the box adopts sliding bearings. The pump wheel 28, the turbine wheel 30 and the transmission shaft are bolted. Thrust bearings are provided at both ends, and the glands at the ends of the pump wheel shaft 20 and the turbine shaft 4 are directly connected to the box body with bolts to realize the axial positioning of the pump wheel shaft 20 and the turbine shaft 4. The box body adopts a split welded box body, and the input It coincides with the axis of the output bearing seat hole, and there are two layers of support plates inside the box. There are corresponding bearing holes on the support plates for installing sliding bearings. The conduit housing 34 and the support plate on the left side of the box are directly bolted. Link to each other, the side of lower casing 2 is welded with conduit support seat corresponding to conduit, the connection of input shaft 18 and motor, output shaft 11 and working machine all adopts gear coupling.

When the hydraulic coupling is working, the working oil pumped out by the working oil pump enters the oil inlet chamber, driven by the oil scraper plate 27 of the pump wheel, and enters the working chamber of the coupler from the oil inlet on the pump wheel 28, and the coupler After starting to work, because the spaces inside the coupler are all connected, the liquid level of the working oil is at the same level in each space, and the liquid level between the back shell 33 and the cylinder partition 32 is adjusted through the conduit to realize the change of the coupling. The amount of fluid in the cavity can be adjusted to realize the adjustment of the output speed and torque of the hydraulic coupling.

Claims (4)

1. the large-power composite gear capable of speeding up front and rear speed-regulating hydraulic coupler transmission device of one kind high rotating speed boiler water supply pump, it is characterized in that, this device comprises that input shaft (18) is fixed on the lower box (2) by sliding bearing IV (17) and sliding bearing V (21), the right-hand member of input shaft (18) is equipped with input end gear coupling (22), left end is equipped with cone pinion (43), the dependence key is connected between the cone gear (13) that cooperates with cone pinion (43) and the oil pump shaft (16), oil pump shaft (16) is installed on the dunnage (46) by angular contact ball bearing (44), and work oil pump (14) is connected with oil pump shaft (16) by duplicate gear with lubricating oil primary pump (15); Input shaft (18) is connected with preceding speedup herringbone gearwheel (19) interference, Pump wheel shaft (20) is fixed on the lower box (2) by sliding bearing VI (23) and sliding bearing VII (25), the form that Pump wheel shaft (20) is designed to gear shaft cooperates with preceding speedup herringbone gearwheel (19), Pump wheel shaft (20) is connected by bolt at the pump impeller axle head with pump impeller (28), Pump wheel shaft (20) right-hand member is equipped with Pump wheel shaft end thrust bearing (42), and locate by pump impeller axle head gland (41), turbine shaft (4) is fixed on the lower box (2) by sliding bearing I (7) and sliding bearing X (35), turbine shaft (4) is connected with back speedup herringbone gearwheel (3) interference, turbine shaft (4) is connected with bolt with turbine (30) at axle head, the left end of turbine shaft (4) is equipped with turbine shaft end thrust bearing (6), and is located by turbine axle head gland (5); Output shaft (11) is fixed on the lower box (2) by sliding bearing II (9) and sliding bearing III (12), output shaft (11) is connected with back speedup double helical pinion (10) interference, back speedup herringbone gearwheel (3) matches with back speedup double helical pinion (10), the left end of output shaft (11) is equipped with output terminal gear coupling (8), auxiliary lube oil pump assembly (24) is connected on the casing, oil-releasing mechanism (1) supports by the catheter support seat that is welded on the lower box (2), conduit can telescopic moving in the outlet oil pocket of fluid coupling, two dunnages (45,46) be welded on the lower box (2), input shaft (18) adopts input shaft end gear coupling (22) with being connected of motor, output shaft (11) adopts output shaft end tooth formula coupling (8) with being connected of working machine, the active chamber of fluid coupling is a peach shape active chamber, fluid coupling is to be fixedlyed connected with Pump wheel shaft (20) by pump impeller (28), turbine (30) is fixedlyed connected with turbine shaft (4), pump impeller is scraped food tray (27) and is supported on the bearing support (38), and fixedly connected with pump impeller (28), shell on the back (33) all is supported on conduit housing (34) with cylindrical shell dividing plate (32) upward fixedlys connected with rotary barrel (31) simultaneously, and rotary barrel (31) links to each other with pump impeller (28) with bolt at the other end; Have the through hole of annular on the cylindrical shell dividing plate (32), pump impeller (28) and turbine (30), shell on the back (33) and cylindrical shell dividing plate (32), pump impeller are scraped the space of forming between food tray (27) and pump impeller shell, rotary barrel (31) and pump impeller (28) and the turbine shell and are all communicated; Oil-way system is made up of work oil pump (14), lubricating oil primary pump (15) and auxiliary lubrication pump (24), and is gear oil pump, and safety valve is housed in the oil-way system, and temperature transducer is equipped with at each bearing place, guarantees the oil-way system safe operation.

2. according to the described large-power composite gear capable of speeding up front and rear speed-regulating hydraulic coupler transmission device of claim 1, it is characterized in that, preceding speedup herringbone gearwheel (19) is 2.0-2.10 with the speed increasing ratio of the gear of Pump wheel shaft (20), and back speedup herringbone gearwheel (3) is 1.70-1.80 with the speed increasing ratio of back speedup double helical pinion (10).

3. according to the described large-power composite gear capable of speeding up front and rear speed-regulating hydraulic coupler transmission device of claim 1, it is characterized in that the described fixedly connected bolt that is connects.

4. according to the described large-power composite gear capable of speeding up front and rear speed-regulating hydraulic coupler transmission device of claim 2, it is characterized in that the gap between pump impeller (28) and the turbine (30) is 3mm-8mm.

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