CN204186579U - A kind of improvement reciprocating pump crosshead - Google Patents
A kind of improvement reciprocating pump crosshead Download PDFInfo
- Publication number
- CN204186579U CN204186579U CN201420579150.8U CN201420579150U CN204186579U CN 204186579 U CN204186579 U CN 204186579U CN 201420579150 U CN201420579150 U CN 201420579150U CN 204186579 U CN204186579 U CN 204186579U
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- CN
- China
- Prior art keywords
- crosshead
- gear
- bearing shell
- driven gear
- driving gear
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Abstract
The utility model relates to a kind of improvement reciprocating pump crosshead, includes motor, coupling, transmission shaft, gear, bent axle and crosshead; Described gear includes two driving gears and two driven gears, is respectively the first driving gear, the second driving gear, the first driven gear and the second driven gear; Described motor drives transmission shaft by coupling; Described crosshead is connected with described crankshaft mobility by connecting rod; Described crosshead one end stretched in the pump housing is provided with two pieces of bearing shells; Described in every block, the outer surface of bearing shell matches with the inwall of the described pump housing; The outer surface of bearing shell described in every block is provided with at least two through grooves, and the center line of described groove is curve, and the center line of two described grooves is two sections of same helix.
Description
Technical field
The utility model belongs to the reciprocating pump field of field of petroleum machinery, refers to a kind of improvement reciprocating pump crosshead especially.
Background technique
At present, the reciprocating note water pump transmission device that field of petroleum machinery uses is based on belt gearing down, and existing had fractional water flooding pump to adopt gear reduced drive device.The structure of gear reduced drive device includes external gear reduction unit and the built-in unilateral gear of power box slows down two kinds.External gear reduction unit floor space is comparatively large, and structure is not compact; Power box built-in unilateral gear slowing-down structure is compact, but when water injection pump power is larger, Helical gear Transmission wherein can produce larger axial force and radial force, the driving components such as bent axle, by force unbalance, bear alternate load for a long time, make crankshaft bearing eccentric wear, crank shaft oil seal leakage of oil, crankcase generates heat, and noise is large, and the working life of water injection pump reduces.
For above-mentioned problem, prior art proposes a kind of Double side gear-reduction unit of reciprocating type water flood pump, the stable drive of the transmission co-occurrence gear drive of this device, and noise is lower, and crankcase temperature is normal, extends the working life of water injection pump.In this class formation, reciprocating pump promotes crosshead by bent axle to do straight reciprocating motion, drives piston to promote the liquid entered in pump.In existing technology, the part of crosshead and pump contact internal walls, be provided with two pieces of symmetrical bearing shells, to realize sliding between crosshead and pump chamber inner wall, play the effect of sliding bearing, this sliding friction all has wearing and tearing to the pump housing and bearing shell, in order to reduce wearing and tearing, be generally in the pump housing, be provided with separately a crosshead movement room, be filled with the lubricant oil of certain altitude in these crosshead movement indoor, rely on lubricant oil to reduce the wearing and tearing of bearing shell and the pump housing.But in order to ensure that lubricant oil does not leak into opposite side from side, avoid the formation of crosshead two ends because lubricant oil forms the form of resistance difference, inwall between bearing shell and the pump housing is smooth structure, and gap is less, which results in and lacks lubrication oil condition at the intermediate portion of bearing shell.
Model utility content
The utility model is by the architecture advances to the bearing shell in reciprocating pump crosshead, improves the lubrication effect in bearing shell intermediate portion.
The utility model is achieved through the following technical solutions:
A kind of improvement reciprocating pump crosshead, includes motor, coupling, transmission shaft, gear, bent axle and crosshead; Described gear includes two driving gears and two driven gears, is respectively the first driving gear, the second driving gear, the first driven gear and the second driven gear;
Described motor drives transmission shaft by coupling; Described crosshead is connected with described crankshaft mobility by connecting rod;
Described crosshead one end stretched in the pump housing is provided with two pieces of bearing shells; Described in every block, the outer surface of bearing shell matches with the inwall of the described pump housing; The outer surface of bearing shell described in every block is provided with at least two through grooves, and the center line of described groove is curve, and the center line of two described grooves is two sections of same helix.
Described transmission shaft is provided with described first driving gear and the second driving gear; The two ends of described bent axle are respectively arranged with described first driven gear and described second driven gear; Described first driving gear coordinates with described first driven gear, and described second driving gear coordinates with described second driven gear.
Angle between the sidewall of described groove near piston side and the outer surface of described bearing shell leads fillet process; Angle between another sidewall of described groove and the outer surface of described bearing shell is right angle.
The bottom surface of described groove is plane or cambered surface.
The middle line parallel of adjacent two described grooves.
The beneficial effects of the utility model are:
Pass through the technical program, the lubricant oil of crosshead movement indoor enters bearing shell intermediate portion by the groove of bearing shell outer surface, and by the structural design of groove, make lubricant oil in groove while lubrication shaft bushing surface, unnecessary lubricant oil is taken back the space, side of the nearly bent axle in crosshead movement room.
Accompanying drawing explanation
Fig. 1 is the utility model reciprocating pump structure schematic diagram;
Fig. 2 cross head design schematic diagram of the present utility model;
The plan view of Fig. 3 the utility model bearing shell.
Embodiment
Describe the technical solution of the utility model in detail by the following examples, following embodiment is only exemplary, only can be used for explaining and the technical solution of the utility model being described, and can not be interpreted as being the restriction to technical solutions of the utility model.
In the present embodiment, the general structure of reciprocating pump is not improved, and is prior art, therefore, is not described in detail in this application.The cross head design of the application is only improved the structure of bearing shell part.
As shown in Figure 1 to Figure 3, a kind of improvement reciprocating pump crosshead, includes motor 1, coupling 2, transmission shaft 3, gear, bent axle 8 and crosshead 5; Described gear includes two driving gears and two driven gears, is respectively the first driving gear 4, second driving gear 6, first driven gear 9 and the second driven gear 7; Described transmission shaft 3 is provided with described first driving gear 4 and the second driving gear 6; The two ends of described bent axle 8 are respectively arranged with described first driven gear 9 and described second driven gear 7; Described first driving gear 4 coordinates with described first driven gear 9, and described second driving gear 6 coordinates with described second driven gear 7.
Described motor 1 drives transmission shaft 3 by coupling 2; Described crosshead 5 is flexibly connected with described bent axle 8 by connecting rod;
Described crosshead 5 one end stretched in the pump housing is provided with two pieces of bearing shells 51; In the embodiment of the application, bearing shell and crosshead block are separate structure, and in other embodiment of the application, bearing shell and crosshead can be structure as a whole, but are preferably separate structure, like this when bearing shell damages, only change bearing shell and can realize maintenance.Described in every block, the outer surface of bearing shell matches with the inwall of the described pump housing, the outer surface of bearing shell 51 described in every block is provided with at least two through grooves 511, the center line 512 of described groove 511 is curve, curve herein refers to from a side of bearing shell to the through groove of another side, that is, every bar groove is all provided with an opening two of bearing shell sides, in the present embodiment, the quantity of groove is two, article two, the center line of described groove is two sections of same helix, this structure refers to and the outer surface of bearing shell is provided with helix, whole piece helix is at the outer surface through bearing shell, at least form two double lines, with these two double lines for center line arranges groove.
Angle between the sidewall of described groove near piston side and the outer surface of described bearing shell leads fillet process; Angle between another sidewall of described groove and the outer surface of described bearing shell is right angle.The bottom surface of described groove is plane or cambered surface.Lubricant oil enters into the intermediate portion of bearing shell by the groove of bearing shell outer surface, the outer surface of bearing shell is entered into by being provided with the side of leading fillet, when moving to crankshaft direction under the drive of crosshead at pull bar, lubricant oil is scraped to groove by the right angle of groove, and lubricant oil goes back to oil chamber by trough return current.
Be set to curvilinear structures at the groove of bearing shell outer surface, can make to enter the lubricant oil in groove when the to-and-fro motion of crosshead, form certain resistance, improve the amount that lubricant oil enters bearing shell intermediate portion, improve lubrication effect.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalency thereof.
Claims (4)
1. an improvement reciprocating pump crosshead, includes motor, coupling, transmission shaft, gear, bent axle and crosshead; Described gear includes two driving gears and two driven gears, is respectively the first driving gear, the second driving gear, the first driven gear and the second driven gear; It is characterized in that:
Described motor drives transmission shaft by coupling; Described crosshead is connected with described crankshaft mobility by connecting rod;
Described crosshead one end stretched in the pump housing is provided with two pieces of bearing shells; Described in every block, the outer surface of bearing shell matches with the inwall of the described pump housing; The outer surface of bearing shell described in every block is provided with at least two through grooves, and the center line of groove described in two is curve, and the center line of two described grooves is two sections of same helix.
2. improvement reciprocating pump crosshead according to claim 1, is characterized in that: described transmission shaft is provided with described first driving gear and the second driving gear; The two ends of described bent axle are respectively arranged with described first driven gear and described second driven gear; Described first driving gear coordinates with described first driven gear, and described second driving gear coordinates with described second driven gear.
3. improvement reciprocating pump crosshead according to claim 1, is characterized in that: the angle between the sidewall of described groove near piston side and the outer surface of described bearing shell leads fillet process; Angle between another sidewall of described groove and the outer surface of described bearing shell is right angle.
4. the improvement reciprocating pump crosshead according to claim 1 or 3, is characterized in that: the bottom surface of described groove is plane or cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579150.8U CN204186579U (en) | 2014-10-08 | 2014-10-08 | A kind of improvement reciprocating pump crosshead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579150.8U CN204186579U (en) | 2014-10-08 | 2014-10-08 | A kind of improvement reciprocating pump crosshead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186579U true CN204186579U (en) | 2015-03-04 |
Family
ID=52618588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420579150.8U Expired - Fee Related CN204186579U (en) | 2014-10-08 | 2014-10-08 | A kind of improvement reciprocating pump crosshead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186579U (en) |
-
2014
- 2014-10-08 CN CN201420579150.8U patent/CN204186579U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20191008 |