CN210623066U - Connecting rod connecting ring for horizontally opposed plunger pump - Google Patents

Abstract

The utility model discloses a horizontal opposed plunger pump connecting rod go-between, adopt whole ring blank casting, whole ring machine tooling shaping back, with walk the silk thread cutting half-and-half with soon or walk to open into first semicircle go-between and semicircle go-between down, the first semicircle go-between of components of a whole that can function independently and semicircle go-between adopt connecting bolt or cylindric lock hookup into whole go-between that have locate function down, the interior round surface of go-between is scribbled according to its service environment or stress state and is made it form the temperature resistance with wear-resistant material, it is corrosion-resistant, the wearing layer, processing has radial or axial excircle oil groove on the go-between body, interior round oil groove, lubrication groove and oil lubrication hole, in order to realize the lubrication of relevant connection motion pair. The utility model discloses simple structure, cost of manufacture are low, simple to operate, have guaranteed horizontal opposed type plunger subassembly's centering installation and good connection reliability, have improved the vice lubricating property of relevant connection motion, wear-resisting erosion performance to the stability and the reliability of horizontal opposed type plunger pump operation have been improved.

Description

Connecting rod connecting ring for horizontally opposed plunger pump

Technical Field

The utility model relates to a plunger pump installation component technical field specifically is a horizontal opposed formula plunger pump connecting rod go-between.

Background

Most of the existing plunger pumps are arranged on a single side, are commonly single plunger pumps or double plunger pumps, are applied to the industrial fields with high pressure and large flow requirements such as oil field water injection, steel rolling dephosphorization and the like, and have the problems of small liquid discharge amount, large stress of a crankshaft, large vibration noise and the like.

Based on this, patent application number CN201810011835.5 discloses a multiseriate horizontal opposed high pressure plunger pump, mainly includes multiseriate plunger subassembly and cylinder body, multiseriate plunger subassembly installs in the cylinder body, multiseriate plunger subassembly symmetrical arrangement is in bent axle both sides, the cylinder body is split type structure, separates from bent axle central line, is convenient for install bent axle and multiseriate plunger subassembly. Each row of the multi-row plunger assembly comprises a connecting rod, a cross head, a connecting rod, a plunger and a water retaining ring, the connecting rod of the plunger assembly is connected with the crankshaft, the connecting rod is connected with the cross head, the cross head is connected with the connecting rod, the connecting rod is connected with the plunger, and the water retaining ring is arranged at the connecting position of the connecting rod and the plunger. The device has the advantages of reasonable design, simple structure and low manufacturing cost, adopts multi-cylinder bilateral symmetrical arrangement, has large liquid discharge flow, improves the working efficiency, counteracts the stress of the crankshaft and reduces the vibration noise. The multi-column plunger assembly is arranged in the cylinder body matched with the plunger assembly to form mutually independent transmission mechanisms, so that the plunger assembly is convenient to disassemble, assemble and maintain, and the problem of sealing and leakage is easily solved.

However, the above patent does not relate to a detailed installation structure of the horizontally opposed plunger assembly on the crank pin of the crankshaft, but simply describes that a plurality of rows of plunger assemblies are symmetrically arranged on both sides of the crankshaft, and the connecting rods of the plunger assemblies are connected with the crankshaft, so that the problems of how to ensure the centering installation of the connecting rods of the horizontally opposed plunger assemblies relative to the crank pin, improving the connection reliability of the connecting rods and the crank pin of the opposed plunger assemblies, and the like are not related, and the installation mode and the connection structure suitable for the opposed connecting rods on the crank pin of the crankshaft need to be designed.

Disclosure of Invention

An object of the utility model is to provide a horizontal opposed type plunger pump connecting rod go-between realizes the centering installation of a plurality of horizontal opposed type plunger subassemblies on bent axle crank pin through the structural design of go-between, improves the reliability that connecting rod and crank pin of opposed type plunger subassembly are connected, has both had connection structure simple, can improve the stability and the reliability of horizontal opposed type plunger pump operation again, increase of service life to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a connecting rod connecting ring of a horizontally opposed plunger pump comprises an upper semicircular connecting ring and a lower semicircular connecting ring which are assembled into a whole connecting ring; the outer circles of the upper semicircular connecting ring and the lower semicircular connecting ring are provided with a circle of outer circle oil grooves, the inner circle is provided with a circle of inner circle oil grooves, the inner circle oil grooves are provided with lubricating oil grooves in crossed cross structures and oil filling holes communicated with the outer circle oil grooves at intervals, and the joint surfaces of the upper semicircular connecting ring and the lower semicircular connecting ring are respectively provided with an upper positioning hole and a lower positioning hole; the upper positioning hole is a stepped hole and penetrates through the connecting bolt connecting hole, the lower positioning hole is a threaded hole, and threads are machined on the hole wall to facilitate bolt connection.

Preferably, the upper semicircular connecting ring and the lower semicircular connecting ring are cast as an integral circular ring blank, and after the integral circular ring is machined and formed by the integral circular ring machine, the integral circular ring is cut into halves by a fast-running wire or a slow-running wire.

Preferably, the upper semicircular connecting ring and the lower semicircular connecting ring are connected into a whole connecting ring by connecting bolts or cylindrical pins with positioning functions.

Preferably, the inner circular surfaces of the upper semicircular connecting ring and the lower semicircular connecting ring are coated with wear-resistant materials according to the use environment or the stress state of the upper semicircular connecting ring and the lower semicircular connecting ring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a pair of horizontal opposed plunger pump connecting rod go-between, it adopts whole ring blank casting, whole ring machine tooling shaping back earlier, cuts into last semicircle go-between and lower semicircle go-between with the silk thread cutting of walking soon or walking slowly, and the last semicircle go-between and the semicircle go-between that divides the body adopt connecting bolt or the cylindric lock that has locate function to connect into whole go-between down. The connecting ring is clamped in the connecting ring grooves of the large ends of the two opposite half connecting rods (forming a sliding friction pair), so that the large ends of the two half connecting rods are embraced on the crankshaft (forming the sliding friction pair), the crankshaft can drive the half connecting rods and the plunger assembly on the two sides of the crankshaft to reciprocate, the centering installation and the good connection reliability of the horizontally opposite plunger assembly connecting rods are guaranteed, and the structure is simple, the manufacturing cost is low, and the installation is convenient.

2. The utility model provides a horizontal opposed plunger pump connecting rod connecting ring, the connecting ring inner wall is scribbled wear-resistant material and is made it form temperature resistant, corrosion-resistant, the wearing layer, processing has radial or axial excircle oil groove, interior round oil groove, lubrication groove and oil filler point afterwards on the connecting ring body, but the oil filler point plug-in machine glib talker is in order to supply lubricating oil (the lubricating oil that splashes simultaneously in addition), lubricating oil flows along interior round oil groove and lubrication groove, for the sliding friction pair between connecting ring and two opposition half connecting rod main ends and the sliding friction pair between bent axle and two opposition half connecting rod main ends all provide good lubrication, improved the lubricating property of each sliding friction pair of opposition crank coupling mechanism, wear resistance, reduced the mechanical energy consumption of friction pair, thereby improving the unit efficiency, the running stability and the reliability of the horizontally opposed plunger pump.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 1 according to the present invention;

fig. 5 is a schematic view of a lower semicircular connection ring according to the present invention;

fig. 6 is a schematic diagram of the structure of the upper semicircular connecting ring of the present invention.

In the figure: the oil groove structure comprises an upper semicircular connecting ring 1, a lower semicircular connecting ring 2, an upper positioning hole 3, a lower positioning hole 4, a bolt connecting hole 5, an outer circular oil groove 6, an inner circular oil groove 7, a lubricating oil groove 8, an oil filling hole 9 and a thread 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, in the embodiment of the present invention: a connecting rod connecting ring of a horizontally opposed plunger pump comprises an upper semicircular connecting ring 1 and a lower semicircular connecting ring 2; the cross sections of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2 are mutually spliced to form a whole connecting ring, and an upper positioning hole 3 and a lower positioning hole 4 are respectively formed in the splicing end face of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2; the upper positioning hole 3 is communicated with a bolt connecting hole 5 in the upper semicircular connecting ring 1, and the bolt connecting hole 5 penetrates through the outer circle of the upper semicircular connecting ring 1; a circle of excircle oil groove 6 is further processed on the excircles of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2, a circle of inner circle oil groove 7 is processed on the inner circles of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2, lubricating oil grooves 8 in a crossed cross structure are distributed on the inner circle oil grooves 7 at intervals, an oil filling hole 9 is communicated with the lubricating oil grooves 8, and the oil filling hole 9 penetrates through the excircle and the inner circle of the whole connecting ring and is used for lubricating a connecting ring inner wall and a half-connecting-rod slideway friction pair; the lower positioning hole 4 is arranged on the cross section of the lower semicircular connecting ring 2, and a thread 10 is processed on the hole wall of the lower positioning hole 4.

In this embodiment, the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2 are formed by half-cutting the connecting ring blank into an integral circular ring by using fast and slow running wires after rough machining and forming.

In this embodiment, the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2 are connected by connecting bolts or cylindrical pins with positioning function to form the whole connecting ring.

In this embodiment, the inner circular surfaces of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2 are coated with a wear-resistant material according to the use environment or the stress state thereof to form a temperature-resistant, corrosion-resistant and wear-resistant layer.

The design principle is as follows: the connecting rod connecting ring of the horizontally opposed plunger pump is cut into an upper semicircular connecting ring 1 and a lower semicircular connecting ring 2, when in use, the big ends of two semicircular connecting rods are firstly embraced on crank pins of a plunger pump crankshaft (pin axes are horizontally opposed), then the two upper semicircular connecting rings 1 and the two lower semicircular connecting rings 2 are buckled in two connecting ring grooves of the big ends of the two opposed semicircular connecting rods (longitudinal section of the connecting rod is bilaterally symmetrical), then bolts or screws or cylindrical pins are inserted into bolt connecting holes 5 at two sides of the upper semicircular connecting ring 1 and pass through an upper positioning hole 3 and a lower positioning hole 4 at two sides of the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2 in sequence and are finally locked with threads 10 at the hole wall of the lower positioning hole 4, so that the big ends of the two semicircular connecting rods are reliably embraced on the crankshaft, and the crankshaft can drive the semicircular connecting rods and the plunger components at two sides to do reciprocating motion, during actual work, the oil nozzles are inserted into the oil filling holes 9 in the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2, lubricating oil is supplied to the oil nozzles, and flows along the inner circular oil groove 7 and the lubricating oil groove 8 in the inner wall of the connecting rings, so that good lubrication is provided for each sliding friction pair of the opposed crank connecting rod mechanisms.

In summary, the following steps: the utility model provides a horizontal opposed plunger pump connecting rod connecting ring, after adopting whole ring blank casting, whole ring machine tooling shaping earlier, cut half-and-half with fast walking silk or slow walking silk thread and become first semicircle connecting ring 1 and second semicircle connecting ring 2, the interior round surface of connecting ring coats with wear-resisting material and makes it form temperature resistant, anti-corrosion, wearing layer (according to its service environment or stress state); and then a radial or axial outer circular oil groove 6, an inner circular oil groove 7, a lubricating oil groove 8 and an oil filling hole 9 are machined on the connecting ring body so as to lubricate a sliding friction pair between the connecting ring and the large ends of the two opposite half connecting rods. During actual work, the oil nozzles are inserted into the oil filling holes 9 in the upper semicircular connecting ring 1 and the lower semicircular connecting ring 2, lubricating oil is supplied to the oil nozzles, the lubricating oil flows along the inner circle oil groove 7 and the lubricating oil groove 8 in the inner wall of the connecting rings, good lubrication is provided for each sliding friction pair of the opposed crank connecting rod mechanisms, abrasion of relevant mechanical parts is reduced, mechanical transmission efficiency is improved, and therefore stability and reliability of operation of the horizontally opposed plunger pumps are improved.

The above description is only the specific implementation manner of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the design of the present invention within the technical scope of the present invention.

Claims (4)

1. A connecting rod connecting ring of a horizontally opposed plunger pump is characterized by comprising an upper semicircular connecting ring (1) and a lower semicircular connecting ring (2), which are assembled into a whole connecting ring; a circle of excircle oil groove (6) is processed on the excircle of the upper semicircular connecting ring (1) and the lower semicircular connecting ring (2), a circle of inner circle oil groove (7) is processed on the inner circle, lubricating oil grooves (8) in a crossed cross structure and oil filling holes (9) communicated with the excircle oil groove (6) are distributed on the inner circle oil groove (7) at intervals, and an upper positioning hole (3) and a lower positioning hole (4) are respectively formed on the joint surface of the upper semicircular connecting ring (1) and the lower semicircular connecting ring (2); the upper positioning hole (3) is a stepped hole and penetrates through the connecting bolt connecting hole (5), the lower positioning hole (4) is a threaded hole, and threads (10) are machined on the wall of the hole to facilitate bolt connection.

2. The horizontally opposed plunger pump connecting rod coupling ring as set forth in claim 1, wherein: the upper semicircular connecting ring (1) and the lower semicircular connecting ring (2) are cast as an integral circular ring blank, and after the integral circular ring is machined and formed, the integral circular ring is cut into halves by using a fast-running wire or a slow-running wire.

3. The horizontally opposed plunger pump connecting rod coupling ring as set forth in claim 1, wherein: the upper semicircular connecting ring (1) and the lower semicircular connecting ring (2) are connected into a whole connecting ring by adopting a connecting bolt or a cylindrical pin with a positioning function.

4. The horizontally opposed plunger pump connecting rod coupling ring as set forth in claim 1, wherein: the inner circular surfaces of the upper semicircular connecting ring (1) and the lower semicircular connecting ring (2) are coated with wear-resistant materials according to the use environment or stress state.

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