CN204186784U - A kind of reciprocating pump crosshead modified node method - Google Patents
A kind of reciprocating pump crosshead modified node method Download PDFInfo
- Publication number
- CN204186784U CN204186784U CN201420579273.1U CN201420579273U CN204186784U CN 204186784 U CN204186784 U CN 204186784U CN 201420579273 U CN201420579273 U CN 201420579273U CN 204186784 U CN204186784 U CN 204186784U
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- China
- Prior art keywords
- crosshead
- gear
- bearing shell
- reciprocating pump
- driven gear
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a kind of reciprocating pump crosshead modified node method, 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 radial direction of bearing shell described in every block is provided with the through groove of at least two axis; Described crosshead is centered by connecting rod attachment hole, and the rear and front end of crosshead is centrosymmetric structure.
Description
Technical field
The utility model belongs to the reciprocating pump field of field of petroleum machinery, refers to a kind of for reciprocating pump crosshead modified node method 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 use can find, promoted in the reciprocatory movement of connecting rod by bent axle, along with the change of push rod position, the power acted in crosshead also changes thereupon, when push rod be in the beginning push away end time, the power transmitted due to bent axle is because the angle between the center line of push rod and the center line of crosshead is maximum, now act on the radial force maximum (namely relative with piston one end) of crosshead front end, frictional force suffered by bearing shell is herein maximum, when cannot the using of bearing shell herein experience wear, the bearing shell of other parts is still intact, but because the structure of crosshead, make bearing shell can not continue to use, cause the increase of cost.
Model utility content
The utility model is by improving reciprocating pump cross head design, makes bearing shell can carry out front and back and exchanges, improve the working life of bearing shell.
The utility model is achieved through the following technical solutions:
A kind of reciprocating pump crosshead modified node method, 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 radial direction of bearing shell described in every block is provided with the through groove of at least two axis; Described crosshead is centered by connecting rod attachment hole, and the rear and front end of crosshead is centrosymmetric structure.
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 two side of described groove and the outer surface of described bearing shell leads fillet process.
The bottom surface of described groove is plane or cambered surface.
Described in every block, the number of recesses of bearing shell is more than five.
The beneficial effects of the utility model are:
Pass through the technical program, by crosshead is designed to symplex structure, when crosshead front end bearing shell in use for some time, can will before and after bearing shell exchange or exchange before and after crosshead, the little bearing shell part of wearing and tearing is positioned at the front of crosshead, the working life of bearing shell is doubled.
Meanwhile, be provided with the groove of many axis at the outer surface of bearing shell, decrease the area of contact of bearing shell and pump housing inwall, reduce friction.Meanwhile, can lubricant oil be held in groove, be conducive to the lubrication to bearing shell intermediate portion.
Accompanying drawing explanation
Fig. 1 is the utility model reciprocating pump structure schematic diagram;
Fig. 2 is cross head design schematic diagram of the present utility model;
Fig. 3 is the plan view of 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, a kind of reciprocating pump structure, include 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;
As shown in Figures 2 and 3, 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 radial direction of bearing shell 51 described in every block is provided with the through groove 511 of at least two axis.In the present embodiment, the quantity of groove is six.Described crosshead 5 is centered by connecting rod attachment hole 52, and the rear and front end of crosshead 5 is centrosymmetric structure, like this, crosshead just can before and after exchange and use.
Angle between the two side of described groove 511 and the outer surface of described bearing shell is led fillet 512 and is processed.The bottom surface of described groove is plane or cambered surface.
Be provided with the groove of many axis at the outer surface of bearing shell, decrease the area of contact of bearing shell and pump housing inwall, reduce friction.Meanwhile, can lubricant oil be held in groove, be conducive to the lubrication to bearing shell intermediate portion.
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 (5)
1. a reciprocating pump crosshead modified node method, 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 radial direction of bearing shell described in every block is provided with the through groove of at least two axis; Described crosshead is centered by connecting rod attachment hole, and the rear and front end of crosshead is centrosymmetric structure.
2. reciprocating pump crosshead modified node method 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. reciprocating pump crosshead modified node method according to claim 1, is characterized in that: the angle between the two side of described groove and the outer surface of described bearing shell leads fillet process.
4. the reciprocating pump crosshead modified node method according to claim 1 or 3, is characterized in that: the bottom surface of described groove is plane or cambered surface.
5. reciprocating pump crosshead modified node method according to claim 1, is characterized in that: described in every block, the number of recesses of bearing shell is more than five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579273.1U CN204186784U (en) | 2014-10-08 | 2014-10-08 | A kind of reciprocating pump crosshead modified node method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420579273.1U CN204186784U (en) | 2014-10-08 | 2014-10-08 | A kind of reciprocating pump crosshead modified node method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186784U true CN204186784U (en) | 2015-03-04 |
Family
ID=52618792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420579273.1U Expired - Fee Related CN204186784U (en) | 2014-10-08 | 2014-10-08 | A kind of reciprocating pump crosshead modified node method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186784U (en) |
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2014
- 2014-10-08 CN CN201420579273.1U patent/CN204186784U/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 |
Granted publication date: 20150304 Termination date: 20191008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |