CN106321488A - Self-lubricating low-power horizontal type high-speed pump speed-increasing gearbox - Google Patents

Abstract

The invention belongs to the technical field of speed-increasing gearboxes, and particularly relates to a self-lubricating low-power horizontal type high-speed pump speed-increasing gearbox. The speed-increasing gearbox includes a housing, a high-speed shaft, a high-speed gear, a speed-increasing gearbox end cover, a low-speed shaft, and a flexible coupling; the high-speed gear is arranged on the high-speed shaft; the high-speed shaft and the high-speed gear are arranged in the housing; the speed-increasing gearbox end cover is arranged on an end surface close to a pump motor, of the speed-increasing gearbox; and the front end of the low-speed shaft is connected to a shaft of the pump motor through the flexible coupling, and the back end of the low-speed shaft passes through the speed-increasing gearbox end cover and is connected to the high-speed shaft of a pump unit. Vibration of the pump motor and the pump unit are isolated, the vibration speed and the vibration shift of a high-speed pump can be improved, and the noise of the high-speed pump is reduced; and the universality between the pump motor and different types of speed-increasing gearboxes can be expanded.

Description

A kind of small-power horizontal high-speed pump gearbox of self-lubricating

Technical field

The invention belongs to gearbox design field, be specifically related to the horizontal height of small-power of a kind of self-lubricating Speed pump gearbox.

Background technology

Express pump includes pump motor and pump assembly, and pump motor controls pump by driving the gearbox in pump assembly Other assemblies such as unit middle pump body fulfil assignment.

As it is shown in figure 1, the express pump gearbox of prior art, use direct connection scheme, vibration with pump motor Speed, vibration displacement, noise and bearing temperature are difficult to meet technology requirement.

Specifically, there is following defect in the express pump gearbox of prior art:

Need to be by pump motor and gearbox when designing cause Maintenance and Repair express pump gearbox with the direct connection of pump motor Disassemble simultaneously, just can complete using scene to need multiple specialties to coordinate simultaneously, additionally, direct connection design causes Pump motor must according to the size specific customization of existing gearbox, after using scene to go wrong also cannot and Shi Shixian and the exchange of general-purpose machine, cause pump motor versatility not enough, cause use cost to increase；Electricity Arbor directly contacts with gearbox lubricating oil, easily causes lubricating oil reverse osmosis to motor internal, for requiring There is certain potential safety hazard in explosion-proof production scene；Feed intake the initial stage at Petrochemical Construction Projects full device, Will require the motor of all slewings is carried out independent test run, due to the limit of express pump gearbox structure System, it is impossible to meet the examination of motor list or the requirement checked and accepted.

Summary of the invention

The technical issues that need to address of the present invention are: in the express pump of prior art, pump motor and gearbox Direct connection, vibration velocity, vibration displacement, noise and bearing temperature are difficult to meet technology requirement.

Technical scheme is as described below:

A kind of small-power horizontal high-speed pump gearbox of self-lubricating, including housing, high speed shaft and high gear, High gear is arranged on high speed shaft, and high speed shaft and high gear are arranged at enclosure interior, and this small-power crouches Formula express pump gearbox also includes gearbox end cap, slow-speed shaft and flexible coupling: described gearbox end cap Being arranged on gearbox on the end face of pump motor, slow-speed shaft front end is by flexible coupling and pump motor Axle is connected, and slow-speed shaft rear end is connected through gearbox end cap with the high speed shaft of pump assembly.

Preferably: described gearbox end cap is the hollow cylindrical that front/rear end is open, gearbox Cover internal forms cavity.

Preferably: the rear end of described slow-speed shaft passes gearbox cover internal, it is by being nested in The low speed bearing of gearbox cover internal is fixed；Slow-speed shaft passes the afterbody of gearbox end cap and is provided with low speed Gear, low-speed gear is connected with slow-speed shaft by positioning shaft sleeve；In express pump running, slow-speed shaft Drive low-speed gear rotates, and low-speed gear is meshed with the high gear of high speed shaft, and then drives high speed shaft Rotate.

Preferably: described gearbox end cap front end face is provided with isolation gearbox inside and external environment Bearing gland.

Preferably: the lower end of described gearbox end cap is provided with through hole as fuel outlet.

Preferably: gearbox end cap cavity afterbody inner surface is provided with a circle annular protrusion, as low Speed bearing location shoulder, low speed bearing location shoulder height is less than gearbox oil level line in low speed bearing outer ring.

The invention have the benefit that

(1) the small-power horizontal high-speed pump gearbox of a kind of self-lubricating of the present invention, by changing gearbox Structure connects flexible coupling, the vibration of pump motor and pump assembly is isolated, the vibration velocity of express pump, Vibration displacement, noise significantly improve, and also make pump motor can apply to the gearbox of different model；

(2) the small-power horizontal high-speed pump gearbox of a kind of self-lubricating of the present invention, design low speed bearing Location shoulder height is slightly below oil level line in bearing outer ring, it is ensured that the continuous lubrication to low speed bearing, makes low speed Bearing is in the state of bath lubrication, i.e. reduces the complexity of structure, reduces bearing temperature, saves again Save and run the maintenance cost used.

Accompanying drawing explanation

Fig. 1 is the pump motor and pump assembly structural representation using direct connection scheme to connect in existing express pump；

Fig. 2 is the pump assembly structural representation using gearbox of the present invention；

Fig. 3 is the end cover structure schematic diagram of gearbox of the present invention；

Fig. 4 is the partial enlarged drawing of Fig. 3.

In figure, 1-pump motor, 2-pump motor axle, 3-high speed shaft, 4-gearbox, 5-gearbox end cap, 6- Bearing gland, 7-slow-speed shaft, 8-low speed bearing, 9-positioning shaft sleeve, 10-low-speed gear, 11-fuel outlet, 12-low speed bearing outer ring, 13-positions shoulder, 14-oil level line, 15-oil removal cover, 16-oil removal cover aperture.

Detailed description of the invention

Below in conjunction with the accompanying drawings with the embodiment small-power horizontal high-speed pump speedup to a kind of self-lubricating of the present invention Case is described in detail.

Express pump gearbox of the prior art includes housing, high speed shaft 3 and high gear, gearbox 4 Using the pump motor axle 2 of pump motor 1 as slow-speed shaft, the low-speed gear 10 being arranged on slow-speed shaft and setting High gear on high speed shaft 3 is meshed, and drives high speed shaft 3 to rotate.As in figure 2 it is shown, the present invention The small-power horizontal high-speed pump gearbox of a kind of self-lubricating, at housing, the high speed shaft of existing gearbox 4 3, on the basis of high gear, gearbox end cap 5, slow-speed shaft 7 and flexible coupling are added: described increasing Speed case end cap 5 is arranged on gearbox 4 on the end face of pump motor 1, and slow-speed shaft 7 front end is by flexibility Shaft coupling is connected with the pump motor axle 2 of pump motor 1, and rear end is through the height of gearbox end cap 5 with pump assembly Speed axle 3 is connected.

As it is shown on figure 3, the hollow cylindrical that described gearbox end cap 5 is open in front/rear end, gearbox End cap 5 is internally formed cavity.

Slow-speed shaft 7 rear end is internal through gearbox end cap 5, and it is internal by being nested in gearbox end cap 5 Low speed bearing 8 fix.

Slow-speed shaft 7 passes the afterbody of gearbox end cap 5 and is provided with low-speed gear 10, and low-speed gear 10 leads to Cross positioning shaft sleeve 9 to be connected with slow-speed shaft 7.In express pump running, slow-speed shaft 7 drives low speed tooth Wheel 10 rotation, low-speed gear 10 is meshed with the high gear of high speed shaft 3, and then drives high speed shaft 3 Rotate.

Gearbox end cap 5 front end face is additionally provided with bearing gland 6, and bearing (ball) cover is used for isolating in gearbox 4 Portion and external environment, on the one hand stop the pollutant such as extraneous dust to enter gearbox 4, on the one hand by setting It is placed in the outside framework oil seal within bearing (ball) cover and stops the extravasation of gearbox 4 internal lubrication oil.

The lower end of gearbox end cap 5 is provided with through hole as fuel outlet 11, release gearbox 4 during convenient maintenance Interior lubricating oil.

The express pump gearbox of the present invention uses Lubrication Design shown in Fig. 4: gearbox end cap 5 cavity afterbody Inner surface is provided with a circle annular protrusion, and the location as low speed bearing 8 takes on 13, the location of low speed bearing 8 Shoulder 13 is the oil level line 14 of slightly below gearbox 4 higher than low speed bearing outer ring 12.Due in gearbox 4 Having oil removal cover 15 to exist, therefore when refueling, lubricating oil initially enters oil removal cover 15 inner chamber, and oil level regards Mirror is positioned at oil removal cover 15 exocoel, and interior exocoel is connected mutually by oil removal cover 15 bottom 2mm oil removal cover aperture 16 Logical, therefore before oiling completes, the oil level line that in oil removal cover 15, level height is necessarily higher than in oil level view monitor 14, this ensures that there in the cavity that lubricating oil can enter gearbox end cap 5 smoothly, and in normal fortune When turning, due to the existence of the location shoulder 13 of low speed bearing 8, lubricating oil can be made again to stay in cavity, protect The card continuous lubrication to low speed bearing 8, makes low speed bearing 8 be in the state of bath lubrication, both reduced The complexity of structure reduces again and runs the maintenance cost used.

Claims (6)

1. a small-power horizontal high-speed pump gearbox gearbox for self-lubricating, including housing, high speed shaft (3) And high gear, high gear is arranged on high speed shaft (3), and high speed shaft (3) and high gear are arranged In enclosure interior, it is characterised in that: also include gearbox end cap (5), slow-speed shaft (7) and flexible shaft coupling Device: described gearbox end cap (5) is arranged on the end face of the close pump motor (1) of gearbox (4), low Speed axle (7) front end is connected with the pump motor axle (2) of pump motor (1) by flexible coupling, slow-speed shaft (7) rear end is connected through gearbox end cap (5) with the high speed shaft (3) of pump assembly.

The small-power horizontal high-speed pump gearbox gearbox of self-lubricating the most according to claim 1, its It is characterised by: the hollow cylindrical that described gearbox end cap (5) is open in front/rear end, gearbox end cap (5) it is internally formed cavity.

The small-power horizontal high-speed pump gearbox gearbox of self-lubricating the most according to claim 1 and 2, It is characterized in that: the rear end of described slow-speed shaft (7) is internal through gearbox end cap (5), it is by embedding It is placed on the internal low speed bearing (8) of gearbox end cap (5) to fix；Slow-speed shaft (7) passes gearbox end Lid (5) afterbody low-speed gear (10) is installed, low-speed gear (10) by positioning shaft sleeve (9) with Slow-speed shaft (7) is connected；In express pump running, slow-speed shaft (7) drives low-speed gear (10) Rotating, low-speed gear (10) is meshed with the high gear of high speed shaft (3), and then drives high speed shaft (3) Rotate.

The small-power horizontal high-speed pump gearbox gearbox of self-lubricating the most according to claim 3, its It is characterised by: described gearbox end cap (5) front end face is provided with isolation gearbox (4) inside and extraneous ring The bearing gland (6) in border.

The small-power horizontal high-speed pump gearbox gearbox of self-lubricating the most according to claim 3, its It is characterised by: the lower end of described gearbox end cap (5) is provided with through hole as fuel outlet (11).

The small-power horizontal high-speed pump gearbox gearbox of self-lubricating the most according to claim 3, its It is characterised by: gearbox end cap (5) cavity afterbody inner surface is provided with a circle annular protrusion, as slow-speed shaft Holding (8) location shoulder (13), low speed bearing (8) location shoulder (13) is higher than low speed bearing outer ring (12) And less than gearbox (4) oil level line (14).