CN208331163U - Transmission mechanism and oil pumping device - Google Patents

Abstract

The utility model, which relates to, discloses a kind of transmission mechanism and oil pumping device, the transmission mechanism includes: reciprocating device (10), unilateral bearing (20), driving lever (21), rotary body (22) and fixing axle (23), the unilateral bearing (20) is fixedly connected with the driving lever (21), the rotary body (22) is placed on the fixing axle (23), and it can be rotated around the fixing axle (23), the rotary body (22) connect with the unilateral bearing (20), and it can be with the unilateral bearing (20) synchronous rotary, the reciprocating device (10) can act on the driving lever (21), to drive the unilateral bearing (20) to one-directionally rotate.Through the above technical solutions, transmission mechanism is realized by unilateral bearing converts unidirectional rotary motion for linear reciprocating motion, structure is simple, it is stable, and oil pumping device functional reliability is improved significantly, efficiency also increases substantially, and meets the fuel feeding needs of big flow.

Description

Transmission mechanism and oil pumping device

Technical field

The utility model relates to machine driving and pump oil technical fields, fill more particularly to a kind of transmission mechanism and pump oil It sets.

Background technique

Currently, the oil pumping device for lubricating system uses extensively.Normally, in oil pumping device comprising transmission mechanism, Pump oil mechanism etc., usual structure is relative complex, has damaged and maintenance difficulty is big.The pump unit of layer is adopted in current industry in structure Oil suction pressure oil work usually will by means of spring works, be easy to appear spring husband effect the problem of, and the mobility of oil liquid compared with Difference causes the functional reliability of oil pumping device low, inefficient, is not able to satisfy the fuel feeding needs of big flow.Especially transmission mechanism, Directly affect the efficiency of oil pumping device.

Utility model content

The purpose of this utility model is to overcome the low problems of oil pumping device functional reliability of the existing technology, mention For a kind of transmission mechanism and oil pumping device.

To achieve the goals above, on the one hand the utility model provides a kind of transmission mechanism, comprising: reciprocating device, Unilateral bearing, driving lever, rotary body and fixing axle,

The unilateral bearing is fixedly connected with the driving lever, and the rotary body is placed on the fixing axle, and can be around institute Fixing axle rotation is stated, the rotary body is connect with the unilateral bearing, and can be described past with the unilateral bearing synchronous rotary Multiple mobile mechanism can act on the driving lever, so that the unilateral bearing be driven to one-directionally rotate.

Preferably, the unilateral bearing has inner ring and is capable of the outer ring of the relatively described inner ring single direction rotation, the inner ring It is sleeved on the rotary body, the outer ring is fixedly connected with the driving lever.

Preferably, the inner ring and the rotary body are interference fitted.

Preferably, the reciprocating device includes: driving part, eccentric shaft, sliding rail and the first sliding block,

The driving part can drive the eccentric shaft to rotate, and the eccentric shaft is connect with first sliding block, described First sliding block is set to the sliding rail, and can move back and forth along the sliding rail,

First sliding block connect or cooperates with the driving lever, to drive the driving lever mobile.

Preferably, first sliding block includes slider body and the guide pad that is set on the slider body,

The end of the driving lever has bar shape trench hole, and the sliding fulcrum of the guide pad is set in the bar shape trench hole, And it can be slided along the length direction of the bar shape trench hole.

Preferably, the slider body has rectangular slot, and one end of the eccentric shaft is located in the rectangular slot, and Can be while the eccentric shaft rotate, the length direction along the rectangular slot moves back and forth.

Preferably, the second shaft part that the eccentric shaft has the first shaft part and connect with first shaft part, described first Shaft part and second shaft part be not coaxial, and for first shaft part for connecting the driving part, second shaft part is located at institute It states in rectangular slot.

Preferably, the second sliding block is equipped on second shaft part, second sliding block can be around second shaft part Axial-rotation, and can reciprocatingly slide along the length direction of the rectangular slot.

Preferably, second sliding block is arranged fluted on the face being bonded with the inner wall of the rectangular slot.

On the other hand the utility model provides a kind of oil pumping device, have transmission mechanism provided by the utility model.

Through the above technical solutions, transmission mechanism is realized by unilateral bearing converts unidirectional rotation for linear reciprocating motion Transhipment is dynamic, and structure is simple, stable, and oil pumping device functional reliability is improved significantly, and efficiency also increases substantially, full The fuel feeding of foot big flow needs.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of reciprocating device and plunger pump in one embodiment of the utility model；

Fig. 2 is the stereoscopic schematic diagram of transmission mechanism in one embodiment of the utility model；

Fig. 3 is the side view of transmission mechanism in Fig. 2；

Fig. 4 be Fig. 3 along the sectional view of A-A；

Fig. 5 is the stereoscopic schematic diagram of eccentric shaft in one embodiment of the utility model；

Fig. 6 is the stereoscopic schematic diagram of pressure oil mechanism in one embodiment of the utility model；

Fig. 7 is the main view of Tu6Zhong pressure oil mechanism；

Fig. 8 is the cross-sectional view in Fig. 7 along B-B；

Fig. 9 is the side view of Tu6Zhong pressure oil mechanism；

Figure 10 is the cross-sectional view in Fig. 9 along C-C；

Figure 11 is the cross-sectional view of sealing cover in one embodiment of the utility model；

Figure 12 A is the partial enlarged view A in Figure 11；

Figure 12 B is the partial enlarged view B in Figure 11；

Figure 13 is the stereoscopic schematic diagram of oil pumping device in one embodiment of the utility model；

Figure 14 is the main view of oil pumping device in Figure 13.

Description of symbols

10- reciprocating device；11- eccentric shaft；The first shaft part of 111-；112- third shaft part；The second shaft part of 113-；12- Sliding rail；The upper sliding rail of 121-；122- glidepath；The first sliding block of 13-；131- slider body；The rectangular slot of 1311-；132- guide pad； The second sliding block of 14-；141- groove；15- third sliding block；

20- unilateral bearing；21- driving lever；211- bar shape trench hole；22- rotary body；221- fin；2211- oil-scraper face；222- Annular groove；23- fixing axle；24- strainer；25- locking member；

30- fuel reserve tank；The first shoe cream room of 31-；The second shoe cream room of 32-；33- erecting bed；

40- plunger pump；41- plunger；

50- sealing cover；51- bearing；52- bearing cap；53- sealing ring；531- outer ring body；532- supporter；533- sealing Body；

60- one-way flow component；61- seal；62- elastomeric element；63- regulating member；631- through-hole；64- gasket；

70- oil outlet；71- first passage；72- second channel；

The fast relay part of 80-.

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

Embodiment one

- Fig. 4 refering to fig. 1, present embodiment provide a kind of transmission mechanism, comprising: reciprocating device 10, unilateral bearing 20, driving lever 21, rotary body 22 and fixing axle 23, wherein one of effect of reciprocating device 10 is filled for pump oil The power drive assem of middle plunger pump is set, in the present embodiment also while for driving 21 reciprocally swinging of driving lever.Specifically, institute It states unilateral bearing 20 to be fixedly connected with the driving lever 21, the rotary body 22 is placed on the fixing axle 23, and can be around described Fixing axle 23 rotates, and the rotary body 22 connect with the unilateral bearing 20, and can with 20 synchronous rotary of unilateral bearing, The reciprocating device 10 can act on the driving lever 21, so that the unilateral bearing 20 be driven to one-directionally rotate.Wherein, Gu Dead axle 23 is fixedly installed, and fixed form can be to be connected with the fixed structure of other in oil pumping device, specific to connect Depending on position is with the position of fixing axle 23.Reciprocating linear, which is realized, by unilateral bearing 20 is moved to turning for unidirectional circular motion Change, and this transferring structure is simple, it is stable and practical.

Wherein, standard component can be used in unilateral bearing 20, can also carry out non-standard de-sign according to demand, specifically, described unidirectional Bearing 20 has inner ring and is capable of the outer ring of the relatively described inner ring single direction rotation, and the inner ring is placed on the outer of the rotary body 22 Diameter, the outer ring are fixedly connected with the driving lever 21.

Preferably, the outer diameter of the inner ring and the rotary body 22 is interference fitted.

For reciprocating device 10, following structure type can be used, specifically: the reciprocating device 10 wraps Include: driving part (not shown), eccentric shaft 11, sliding rail 12 and the first sliding block 13, the driving part can drive institute The rotation of eccentric shaft 11 is stated, the eccentric shaft 11 is connect with first sliding block 13, and first sliding block 13 is set to the sliding rail 12, and can be moved back and forth along the sliding rail 12, first sliding block 13 connect or cooperates with the driving lever 21, described in driving Driving lever 21 is mobile.Wherein, the effect of sliding rail 12 is to provide slide-and-guide for components such as the first sliding blocks 13, and set-up mode is with first The first sliding block 13 is similar direction plate structure depending on the structure of sliding block 13, such as in present embodiment, so sliding rail 12 can The marginal position of the first sliding block 13 is arranged in.

Further, for the connection type of the first sliding block 13 and the driving lever 21, it can be and directly connected by link mechanism It connects, is also possible to as shown in Figure 2, the setting of the first sliding block 13 has the structure that cooperates with driving lever 21, specifically:

In conjunction with Fig. 1, first sliding block 13 includes slider body 131 and the guiding being set on the slider body 131 The end of block 132, the driving lever 21 has bar shape trench hole 211, and the sliding fulcrum of the guide pad 132 is set to the strip groove In hole 211, and it can be slided along the length direction of the bar shape trench hole 211.To turn in slider body 131 with eccentric shaft 11 It moves during sliding, guide pad 132 pushes the side wall of bar shape trench hole 211, to make driving lever 21 rotate, and at 21 turns of driving lever The sliding fulcrum of guide pad 132 can be moved along the length direction of bar shape trench hole 211 in dynamic process, this fit system structure letter It is single, and effect is good, is hardly damaged.

The slider body 131 is driven for the ease of eccentric shaft 11, the slider body 131 has rectangular slot 1311, One end of the eccentric shaft 11 is located in the rectangular slot 1311, and can be while the eccentric shaft 11 rotates, along institute The length direction for stating rectangular slot 1311 moves back and forth.

Refering to Fig. 5, the eccentric shaft 11 is with the first shaft part 111 and the second shaft part connecting with first shaft part 111 113, first shaft part 111 and second shaft part 113 be not coaxial, and first shaft part 111 is for connecting the driving portion Part, second shaft part 113 are located in the rectangular slot 1311.

Further, the second sliding block 14 is equipped on second shaft part 113, second sliding block 14 can be around described second The axial-rotation of shaft part 113, and can reciprocatingly slide along the length direction of the rectangular slot 1311.That is the second shaft part 113 drive the slider body 131 mobile by the second sliding block 14.

Refering to fig. 1, in order to increase the lubricant effect between the second sliding block 14 and rectangular slot 1311, second sliding block 14 It is arranged fluted 141 on the face being bonded with the inner wall of the rectangular slot 1311.A certain amount of oil can be stored in groove 141 Liquid has the effect of improving lubricity.In present embodiment, one is respectively arranged on two opposite sides of the second sliding block 14 Groove 141, naturally it is also possible to which a plurality of parallel groove 141 is set.

In conjunction with above-mentioned transmission mechanism, present embodiment also provides a kind of oil pumping device, with described in present embodiment Transmission mechanism.Keep the structure of oil pumping device simpler using this transmission mechanism, pump oil effect stability.

Embodiment two

Present embodiment provides a kind of pressure oil mechanism, is used for frizing, and to improve the mobility of oil, oil referred herein can be with It is grease, is also possible to the oil liquid with certain fluidity.In conjunction with Fig. 6-Figure 10, the pressure oil mechanism include: transmission mechanism and Strainer 24, the transmission mechanism include rotary body 22, and the transmission mechanism can make the relatively described strainer 24 of the rotary body 22 Rotation, the rotary body 22 have at least one fin 221, and a line of the fin 221 is attached to the surface of the strainer 24, So that the rotary body 22 fin 221 described in rotary course can scrape grease to another surface from 24 1 surface of strainer. Fin 221 can be set to the structure for having certain gradient with strainer 24, to scrape oil during fin 221 rotates Rouge is mobile, and in the process of moving by downward extruding force, to be extruded to the another side of strainer 24.

Wherein, the transmission mechanism in present embodiment can directly adopt the transmission mechanism in embodiment two, certainly may be used To be adaptively adjusted according to the actual situation.It is not good grease for mobility, passes through the mutual of fin 221 and strainer 24 Effect, can be improved the mobility of grease.

Specifically, the fin 221 has oil-scraper face 2211, and a line of the oil-scraper face 2211 is attached to the strainer 24 Surface, between the oil-scraper face 2211 and the surface of the strainer 24 have oil storage space.In the process that rotary body 22 rotates In, fin 221 is with rotation, since strainer 24 is static, so fin 221 can scrape the table in strainer 24 during rotating Face, grease between the two can penetrate strainer 24 under the effect.Strainer 24 is preferably flat screen.

Multiple structural forms can be for oil-scraper face 2211, as long as the distance of opposed screen 24 has increasing or decreasing (root According to direction depending on different) trend, for example, the oil-scraper face 2211 is plane, and between the surface of the strainer 24 Formed angle, it is preferable that be formed by between the oil-scraper face 2211 and the surface of the strainer 24 angular range be 20 °- 30°。

The oil-scraper face 2211 or curved surface.In this way, the space between 24 face of oil-scraper face 2211 and strainer will increase, Convenient for oil storage and frizing.Preferably, the bent position away from the strainer 24 is recessed.For other of oil-scraper face 2211 Structure type not repeats one by one herein.

In order to realize better scraping effect, the transmission mechanism further includes locking member 25 and fixing axle 23, the rotation Swivel 22 is placed on the fixing axle 23, and can rotate around the fixing axle 23, and the locking member 25 is set to described solid Dead axle 23, for limiting the rotary body 22 along the axial movement of the rotary body 22.Wherein locking member 25 is preferably butterfly Nut.

In order to improve the compactness of fin 221 Yu strainer 24, the transmission mechanism further includes that elastomeric element (does not show in figure Out), the elastomeric element is set to the fixing axle 23, and between the locking member 25 and the rotary body 22.Bullet The elastic acting force of property component can act on fin 221 constantly, to make the better frizing of fin 221.

Specifically, the elastomeric element is spring, and the spring is nested in the fixing axle 23, and is located at the tight lock part Between part 25 and the rotary body 22.

In conjunction with above-mentioned pressure oil mechanism, present embodiment also provides a kind of oil pumping device, and the oil pumping device includes this implementation Pressure oil mechanism described in mode.

Embodiment three

Present embodiment provides a kind of oil pumping device, for conveying grease, in conjunction with Fig. 8, Figure 10, Figure 13, Figure 14, and the pump Oily device includes fuel reserve tank 30, pump oil mechanism and pressure oil mechanism, and the pressure oil mechanism includes strainer 24, wherein the oil storage The second shoe cream room 32 that case 30 has the first shoe cream room 31 and is connected to first shoe cream room 31, the strainer 24 are set to institute The position that the first shoe cream room 31 is connected to second shoe cream room 32 is stated, the grease can be from first shoe cream room 31 through institute Strainer 24 is stated to second shoe cream room 32, the oil inlet of the pump oil mechanism is connected to second shoe cream room 32.

Wherein pressure oil mechanism can be the pressure oil mechanism in embodiment two, be also possible to other achievable forms.

In present embodiment, erecting bed 33 (in combination with Fig. 8 and Figure 10), the erecting bed are provided in the fuel reserve tank 30 33 are fixed on the inner wall of second shoe cream room 32, and the erecting bed 33 is fixed in one end of the fixing axle 23.Certainly, fixed Axis 23 can also be directly fixed on the bottom in the second shoe cream room 32, it is contemplated that the stability of pressure oil mechanism, therefore in the second oil storage The inner wall of chamber 32 devises erecting bed 33.Erecting bed 33 is a platform and several gussets being set under platform.Gusset plays The effect of reinforcing.

In conjunction with Fig. 4, there is annular groove 222 in the central shaft hole of the rotary body 22.A certain amount of oil liquid can be stored, from And play the role of lubrication.

Oil pumping device in present embodiment, fuel reserve tank 30 is separated by strainer 24, and improves oil by pressure oil mechanism The mobility of rouge, convenient for pumping out for grease.

Embodiment four

Present embodiment provides a kind of oil pumping device, and for conveying grease, the oil pumping device in present embodiment is in reality It applies and has done further improvement on the basis of the oil pumping device in mode three, be mainly reflected in pump oil mechanism section.

Specifically, the oil pumping device includes fuel reserve tank 30, pump oil mechanism and pressure oil mechanism, and the pressure oil mechanism includes Strainer 24, the second shoe cream room 32 that the fuel reserve tank 30 has the first shoe cream room 31 and is connected to first shoe cream room 31, institute It states strainer 24 and is set to the position that first shoe cream room 31 is connected to second shoe cream room 32, the grease can be from described First shoe cream room 31 is through the strainer 24 to second shoe cream room 32, the oil inlet of the pump oil mechanism and second oil storage Chamber 32 is connected to；

The pump oil mechanism includes: reciprocating device 10 and plunger pump 40,

The reciprocating device 10 includes: that driving part, eccentric shaft 11, sliding rail 12, the first sliding block 13 and third are sliding Block 15, the driving part can drive the eccentric shaft 11 to rotate, the eccentric shaft 11 and first sliding block 13 and described Third sliding block 15 connects, and first sliding block 13 and the third sliding block 15 are set to the sliding rail 12, and can be along the cunning The axially stacked arrangement of the reciprocating movement of rail 12, first sliding block 13 and the third sliding block 15 along the eccentric shaft 11；

For the plunger pump 40 tool there are two plunger 41, two plungers 41 are connected to first sliding block 13 and described the Three sliding blocks 15, and can institute first sliding block 13 and the third sliding block 15 move back and forth, the plunger pump 40 pass through two The reciprocating movement of plunger 41 transfers out the grease in second shoe cream room 32.Through the above technical solutions, present embodiment The oil pumping device functional reliability of offer is higher, and efficiency is preferable, can satisfy the fuel feeding demand of big flow.

Further, first sliding block 13 and the third sliding block 15 are provided with card slot, one end shape of the plunger 41 At there is bulge-structure, the bulge-structure is set in the card slot.The first sliding block 13 and the are drawn to realize plunger 41 The effect of three sliding blocks 15.Wherein a plunger 41 in each plunger pump 40 connects the first sliding block 13, the connection of another plunger 41 Third sliding block 15.Two 41 reciprocal motions of plunger are to realize pump oil.

In the present embodiment, the plunger pump 40 is fixedly installed in second shoe cream room 32.

Further, second shoe cream room 32 is provided with sealing cover 50, the plunger pump 40 and the reciprocating device 10 are all set in the sealing cover 50.Wherein, the oil inlet of the pump oil mechanism is located at the plunger pump 40, the pump oil mechanism Oil outlet be set to the sealing cover 50.

Preferably, refering to fig. 1, the sliding rail 12 includes the upper sliding rail 121 and glidepath 122 being oppositely arranged, described first Sliding block 13 and the third sliding block 15 are all set between the upper sliding rail 121 and the glidepath 122, the upper sliding rail 121 Orbital direction be parallel to the orbital direction of the glidepath 122.Further, the upper sliding rail 121 and the glidepath 122 are equal It is fixed on the inner surface of the sealing cover 50.Wherein, upper sliding rail 121 is parallel to the glidepath 122.Specifically, the upper cunning Rail 121 and the glidepath 122 are fixed by bolts in the inner surface of the sealing cover 50.

In the present embodiment, the plunger pump 40 at least two, and connect with the reciprocating device 10.Example Such as: the oil pumping device includes two plunger pumps 40, and two plunger pumps 40 are relatively arranged on the reciprocating movement machine 10 two sides of structure.

Embodiment five

Present embodiment provides a kind of sealing cover 50, can be used for embodiment one, embodiment two, embodiment three, reality The oil pumping device in mode four is applied, is substantially the first oil storage that Figure 13 has removed fuel reserve tank 30 in conjunction with Fig. 1,6,11,12, Fig. 6 The structure of chamber 31, in the present embodiment, the sealing cover 50 are provided with oil outlet 70, are provided in the oil outlet 70 unidirectional Flow module 60, to control oil liquid from the unidirectionally outflow of oil outlet 70.The appropriate of oil outlet 70 is filled according to the pump oil installed Depending on the quantity of plunger pump in setting, under normal circumstances, the corresponding oil outlet 70 of a plunger pump.By in oil outlet 70 It is provided with one-way flow component 60, on the one hand can guarantee the one way stable circulation of oil pumping device oil liquid, on the other hand, one-way flow The combination of component 60 and sealing cover 50 makes, and entire oil pumping device structure is more compact, i.e., need not be separately provided on outer pipeline Check valve, so that 50 functional diversities of sealing cover, are hardly damaged moreover, one-way flow component 60 is set to oil outlet 70, Long service life.

In order to which one-way flow component 60 is reasonably arranged, 1-12, the oil outlet 70 are set as having mutually connected refering to fig. 1 Logical first passage 71 and second channel 72, the first passage 71 and the second channel 72 are circular channel, and described The diameter in one channel 71 is greater than the diameter of the second channel 72, and the one-way flow component 60 is set to the first passage 71 Bottom.Since the diameter of first passage 71 is greater than the diameter of the second channel 72, so in the bottom shape of first passage 71 At a circular plane, oil liquid first passes through second channel 72, then enters back into first passage 71, when entering first passage 71 Oil liquid flow direction is controlled by one-way flow component 60, avoids damaging plunger pump because of oil liquid water conservancy diversion.

In conjunction with Figure 12 A, the one-way flow component 60 includes seal 61, elastomeric element 62 and regulating member 63, institute It states elastomeric element 62 and acts on the seal 61, so that the seal 61 seals the second channel 72, the adjustment portion Part 63 is set in the first passage 71, and acts on the elastomeric element 62, so that the elasticity of the elastomeric element 62 is made Firmly it is applied to the seal 61.

Since oil liquid is flowed from second channel 72 to first passage 71, so seal can be opened during flowing 61, so that one-way flow component 60 is opened, and when special circumstances (external load increases suddenly) oil liquid will be from first passage 71 When flowing to second channel 72, seal 61 can seal second channel 72, and the structure is similar to one-way valve structures, separate similar, So other principles are not discussed in detail.

A part of reason of the sealing effect of one-way flow component 60 depends on the position between seal 61 and second channel 72 Relationship is set, seal 61 can directly be sealed in the end of second channel 72, at this time the end of seal 61 and second channel 72 Portion is bonded closer, and sealing effect is better.

When 50 long-time of sealing cover uses, the sealing effect of seal 61 and second channel 72 can decline, and can at this time lead to Bottom anchor ring and/or the replacement seal 61 of further processing first passage 71 are crossed to solve, it is contemplated that first passage 71 adds The limitation of the cost and processing times of work, the one-way flow component 60 in present embodiment further includes gasket 64, the gasket 64 are set to the bottom of the first passage 71, and are located between the port and the seal 61 of the second channel 72, institute It states regulating member 63 and acts on the gasket 64, so that the gasket 64 is stably positioned in the bottom of the first passage 71.This When second channel 72 sealing effect depend on fitting tightness between gasket 64 and seal 61, so working as sealing effect It can be can be realized by replacement gasket 64 and/or seal 61 when decline.This mode makes the dimension of one-way flow component 60 Xiu Gengjianjie, and first passage 71 need not be processed.

Specifically, the regulating member 63 is with externally threaded barrel-like structure, and the regulating member 63 is screwed described In first passage 71, the elastomeric element 62 is located in the barrel-like structure.

The bottom of the barrel-like structure has through-hole 631, and the outer diameter of the elastomeric element 62 is greater than the straight of the through-hole 631 Diameter, to guarantee that elastomeric element 62 cannot be spilt from through-hole 631.

Specifically, the seal 61 is a sphere, and the elastomeric element 62 is spring.

In conjunction with Figure 11, the port of the first passage 71 is provided with fast relay part 80, can quickly connecting convenient for external pipe It is logical.

Present embodiment also provides a kind of oil pumping device, the sealing cover 50 provided including present embodiment.

Embodiment six

2B refering to fig. 1, present embodiment provide a kind of sealing structure, and the sealing structure includes: eccentric shaft 11, sealing cover 50, circular through hole is arranged in bearing 51, bearing cap 52 and sealing ring 53, the sealing cover 50, and the bearing 51 is embedded at described In circular through hole, the bearing cap 52 is embedded at the end of the circular through hole, and acts on the bearing 51, the eccentric shaft 11 pass through the centre bore of the centre bore of the bearing cap 52 and the bearing 51, and the eccentric shaft 11 and the bearing cap 52 There is gap, the centre bore of the eccentric shaft 11 and the bearing 51 is interference fitted, and the sealing ring 53 is arranged between centre bore In in the circular through hole, and it is sealed between the bearing cap 52 and the eccentric shaft 11.Through the above scheme, bearing 51 can Guarantee that smoothly rotation, bearing cap 52 act on bearing 51, the steady of bearing 51 can be improved eccentric shaft 11 relative to the sealing cover 50 Qualitative, sealing ring 53 ensure that the leakproofness between eccentric shaft 11 and circular through hole.

For the ease of setting, the end of the bearing cap 52 is provided with annular groove, and the sealing ring 53 is set to described In annular groove.Annular groove has certain accommodation space, can accommodate a certain amount of lubricating oil, lubricating oil is in sealing ring 53 On can play the role of sealing.

Further, the sealing ring 53 has sequentially connected outer ring body 531, supporter 532 and seal 533, institute The inner surface that outer ring body 531 is attached to the annular groove is stated, the seal 533 is attached to the outer surface of the eccentric shaft 11.It is close Seal 53 can be rubber seal, have certain elasticity, so as to be fitted in the outer surface of eccentric shaft 11 constantly.

Further, in order to improve leakproofness, if being provided on the face that the seal 533 and the eccentric shaft 11 fit The annular seal protrusion that dry item is arranged successively along the axial direction of the eccentric shaft 11.

For sealing cover 50, structure is identical as embodiment five, and sealing cover 50 is provided with oil outlet 70, the oil outlet 70 are located at the side of the circular through hole, are provided with one-way flow component 60 in the oil outlet 70, to control oil liquid from described Oil outlet 70 unidirectionally flows out.Embodiment five is seen for one-way flow component 60, it will not be described here.Pass through above-mentioned technology Scheme, the sealing structure in present embodiment contain the sealing cover 50 in embodiment five, and the sealing effect at eccentric shaft 11 Fruit is good.The oil pumping device that the sealing structure can be used in above-mentioned any one embodiment.

Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model. It is combined in any suitable manner including each particular technique feature.In order to avoid unnecessary repetition, the utility model To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute Disclosure belongs to the protection scope of the utility model.

Claims (10)

1. a kind of transmission mechanism characterized by comprising reciprocating device (10), unilateral bearing (20), driving lever (21), rotation (22) and fixing axle (23) are turned,

The unilateral bearing (20) is fixedly connected with the driving lever (21), and the rotary body (22) is placed on the fixing axle (23), it and can be rotated around the fixing axle (23), the rotary body (22) connect with the unilateral bearing (20), and can be with Unilateral bearing (20) synchronous rotary, the reciprocating device (10) can act on the driving lever (21), to drive Unilateral bearing (20) one-directional rotation.

2. transmission mechanism according to claim 1, which is characterized in that the unilateral bearing (20) has inner ring and being capable of phase To the outer ring of the inner ring single direction rotation, the inner ring is sleeved on the rotary body (22), the outer ring and the driving lever (21) it is fixedly connected.

3. transmission mechanism according to claim 2, which is characterized in that the inner ring is matched with the rotary body (22) interference It closes.

4. transmission mechanism according to claim 1, which is characterized in that the reciprocating device (10) includes: driving portion Part, eccentric shaft (11), sliding rail (12) and the first sliding block (13),

The driving part can drive the eccentric shaft (11) to rotate, and the eccentric shaft (11) and first sliding block (13) are even It connecing, first sliding block (13) is set to the sliding rail (12), and can move back and forth along the sliding rail (12),

First sliding block (13) connect or cooperates with the driving lever (21), to drive the driving lever (21) mobile.

5. transmission mechanism according to claim 4, which is characterized in that first sliding block (13) includes slider body (131) and the guide pad (132) that is set on the slider body (131),

The end of the driving lever (21) has bar shape trench hole (211), and the sliding fulcrum of the guide pad (132) is set to the item In shape slot (211), and it can be slided along the length direction of the bar shape trench hole (211).

6. transmission mechanism according to claim 5, which is characterized in that the slider body (131) has rectangular slot (1311), one end of the eccentric shaft (11) is located in the rectangular slot (1311), and can revolve in the eccentric shaft (11) While turning, the length direction along the rectangular slot (1311) is moved back and forth.

7. transmission mechanism according to claim 6, which is characterized in that the eccentric shaft (11) has the first shaft part (111) With the second shaft part (113) being connect with first shaft part (111), first shaft part (111) and second shaft part (113) Not coaxial, for first shaft part (111) for connecting the driving part, second shaft part (113) is located at the square groove In hole (1311).

8. transmission mechanism according to claim 7, which is characterized in that it is sliding to be equipped with second on second shaft part (113) Block (14), second sliding block (14) can be around the axial-rotations of second shaft part (113), and can be along the rectangular slot (1311) length direction reciprocatingly slides.

9. transmission mechanism according to claim 8, which is characterized in that second sliding block (14) with the rectangular slot (1311) it is arranged on the face of inner wall fitting fluted.

10. a kind of oil pumping device, which is characterized in that have transmission mechanism as described in any one of claims 1-9.