Automatic oil scooping and lubricating mechanism of speed reducer, speed reducer and oil pumping machine

Abstract

The present application relates to pumping unit technical field, disclose a kind of reducer automatic scooping oil lubricating mechanism, reducer and pumping unit.Reducer automatic scooping oil lubricating mechanism includes casing, with the oil pool for placing lubricating oil;Transmission shaft assembly is set in casing;Oil receiving assembly is set in casing;Lubricating oil groove is set in casing, and is connected with oil receiving assembly and transmission shaft assembly.Scooping oil assembly includes multiple scooping oil buckets, multiple scooping oil buckets are equidistantly arranged along the circumference of transmission shaft assembly;Scooping oil bucket has passage along its axial through both sides, passage is equipped with movable floor, movable floor can move along the axial of passage;With the rotation of transmission shaft assembly, multiple scooping oil buckets are brought to oil receiving assembly in the lubricating oil in oil pool, and flow to transmission shaft assembly by lubricating oil groove.Reducer includes reducer automatic scooping oil lubricating mechanism.Pumping unit includes reducer.The present application is by above-mentioned technical scheme, to solve the technical problem of low scooping oil efficiency of scooping oil bucket in relevant technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pumping units, and in particular to a reducer automatic scooping oil lubricating mechanism, a reducer and a pumping unit. BACKGROUND

[0002] The pumping unit is a key equipment for extracting crude oil from oil wells in oil exploitation, and is commonly used in land oil fields and offshore platforms. Its core function is to transmit ground power to the downhole pump to overcome the oil layer pressure and lift the crude oil to the ground.

[0003] The reducer is one of the core components of the pumping unit, which is used to transmit the power of the motor to the crank for driving the pumping unit, so that the crank drives the beam of the pumping unit to reciprocate.

[0004] In order to ensure the normal use of the reducer, the existing reducer is provided with a scooping oil bucket on the shaft system, which extracts the lubricating oil from the casing to the bearing lubrication through the rotation of the shaft system. However, the current scooping oil bucket has low scooping efficiency. SUMMARY

[0005] The present application discloses a reducer automatic scooping oil lubricating mechanism, a reducer and a pumping unit to solve the technical problem of low scooping efficiency of the scooping oil bucket in the related art.

[0006] In order to solve the above problems, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application discloses a reducer automatic scooping oil lubricating mechanism, comprising:

[0008] A casing having an oil pool for placing lubricating oil;

[0009] A transmission shaft assembly arranged in the casing;

[0010] An oil receiving assembly arranged in the casing;

[0011] A lubricating oil groove arranged in the casing and connected with the oil receiving assembly and the transmission shaft assembly;

[0012] A scooping oil assembly comprising a plurality of scooping oil buckets, the plurality of scooping oil buckets being arranged equidistantly along the circumference of the transmission shaft assembly; the scooping oil bucket has a passage penetrating through both sides along its axial direction, and the passage is provided with a movable bottom plate which can move along the axial direction of the passage;

[0013] Wherein, with the rotation of the transmission shaft assembly, the plurality of scooping oil buckets bring the lubricating oil in the oil pool to the oil receiving assembly, and flow to the transmission shaft assembly through the lubricating oil groove.

[0014] In some schemes, the transmission shaft assembly comprises a low-speed shaft system and an intermediate shaft system, the low-speed shaft system is connected with the casing through a first bearing, and the intermediate shaft system is connected with the casing through a second bearing;

[0015] The two ends of the lubricating oil groove are communicated with the first bearing and the second bearing respectively, and the oil scooping assembly is arranged on the low-speed shaft system and / or the intermediate shaft system.

[0016] In some schemes, the two sides of the oil scooping bucket in the axial direction are respectively provided with a plurality of inwardly converging flaps to limit the disengagement of the movable bottom plate.

[0017] In some schemes, the axial direction of the oil scooping bucket is obliquely inclined to the radial direction of the low-speed shaft system and / or the intermediate shaft system.

[0018] And / or, when the edge of the oil scooping bucket exceeds the edge of the oil receiving assembly, the axis of the oil scooping bucket and the oil receiving assembly have an included angle.

[0019] And / or, when the oil scooping bucket is immersed in the lubricating oil in the oil pool and is not moved to a certain position at the bottom of the low-speed shaft system and / or the intermediate shaft system, the axial direction of the oil scooping bucket is parallel to the inner bottom of the oil pool.

[0020] In some schemes, the casing is further provided with a sludge oil groove, one end of the sludge oil groove is communicated with the oil receiving assembly, and the other end is detachably connected with an oil receiving bottle.

[0021] In some schemes, the oil receiving assembly comprises an oil receiving disc and a plurality of support frames, and the oil receiving disc is connected with the casing through the support frames.

[0022] At least two of the support frames have ramps, one of the ramps is communicated with the oil receiving disc and the lubricating oil groove, and the other ramp is communicated with the sludge oil groove.

[0023] In some schemes, the oil receiving disc has a first overflow pipe, the first overflow pipe is communicated with one of the ramps, and the inlet position of the first overflow pipe is higher than the inner bottom of the oil receiving disc.

[0024] And / or, the oil receiving disc has a second overflow pipe, the second overflow pipe is communicated with one of the ramps, and the inlet position of the second overflow pipe is arranged close to the inner bottom of the oil receiving disc.

[0025] In some schemes, the casing is provided with an overflow port, and the inner part of the casing and the area close to the top of the sludge oil groove are communicated through the overflow port.

[0026] In a second aspect, the application discloses a reducer comprising the automatic oil scooping and lubricating mechanism of the first aspect.

[0027] In a third aspect, the application discloses an oil pumping machine comprising the reducer of the second aspect.

[0028] The technical scheme adopted by the application can achieve the following beneficial effects:

[0029] The automatic oil scooping lubricating mechanism of the speed reducer disclosed in some embodiments of the present application, with the rotation of the transmission shaft assembly, the plurality of oil scooping buckets bring the lubricating oil in the oil pool into the oil receiving assembly, the lubricating oil in the oil receiving assembly flows to the transmission shaft assembly through the lubricating oil groove, thereby effectively lubricating the transmission shaft assembly, and the forced flow of the lubricating oil continuously takes away the heat of the first bearing and the second bearing, especially suitable for the heat dissipation requirement of the low-speed heavy-load working condition of the pumping unit, avoiding the randomness of the traditional splash lubrication. At the same time, in the process of moving in the oil scooping bucket, the movable bottom plate will scrape off the sludge accumulated in the oil scooping bucket and discharge the sludge to the oil receiving assembly for storage, thereby ensuring that the channel will not be blocked by the sludge, thereby maintaining the oil scooping efficiency and oil discharging efficiency to a certain extent, and sufficient supply of the oil receiving assembly. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is an axonometric view of the automatic oil scooping lubricating mechanism of the speed reducer disclosed in some embodiments of the present application;

[0032] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0033] Figure 3 is Figure 1 is an enlarged view of B in FIG. 1;

[0034] Figure 4 is a top view of the automatic oil scooping lubricating mechanism of the speed reducer disclosed in some embodiments of the present application;

[0035] Figure 5 is Figure 4 is an enlarged view of C in FIG. 1;

[0036] Figure 6 is Figure 4 is a sectional view of A-A in FIG. 1;

[0037] Figure 7 is Figure 4 is a sectional view of B-B in FIG. 1;

[0038] Figure 8 is a front view of the first gear and the oil scooping assembly disclosed in some embodiments of the present application;

[0039] Figure 9 is a side view of the automatic oil scooping lubricating mechanism of the speed reducer disclosed in some embodiments of the present application;

[0040] Figure 10 is Figure 9 is an enlarged view of D in FIG. 1;

[0041] Figure 11 is an axonometric view of a casing disclosed by some embodiments of the present application. Figure 1 ;

[0042] Figure 12 is an axonometric view of a casing disclosed by some embodiments of the present application. Figure 2 ;

[0043] Figure 13 is an axonometric view of a pumping unit and a reducer disclosed by some embodiments of the present application.

[0044] in the figure:

[0045] 100 - reducer automatic oil scooping lubricating mechanism, 110 - casing, 111 - oil pool, 112 - lubricating oil groove, 113 - sludge oil groove, 114 - overflow, 115 - oil adding groove, 116 - through groove, 120 - low speed shaft system, 121 - first gear, 122 - first bearing, 130 - intermediate shaft system, 131 - second bearing, 140 - oil receiving assembly, 141 - oil receiving disc, 1411 - first overflow pipe, 1412 - second overflow pipe, 142 - support frame, 1421 - ramp, 150 - oil scooping assembly, 151 - oil scooping bucket, 1511 - flap, 152 - movable bottom plate, 160 - high speed shaft system, 170 - four-way valve, 171 - oil receiving bottle, 172 - valve;

[0046] 200 - reducer;

[0047] 300 - pumping unit. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0049] The terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the term "first", "second", and the like, if any, in the description and in the claims of the present application is merely to distinguish between two separate and distinct structures, implementations, or the like, and not a particular sequential or chronological order. It is to be understood that such terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of

[0050] To ensure the normal use of the reducer, the existing reducer is provided with a oil bucket on the shaft system, which extracts lubricating oil from the casing to the bearing lubrication through the rotation of the shaft system. The oil bucket is usually designed as a structure with grooves. In the process of repeatedly immersing the oil bucket in the oil pool, the sludge will gradually adhere and accumulate in the oil bucket. These accumulated sludge occupies the space originally used to contain lubricating oil, thereby causing the oil extraction efficiency of the oil bucket to be greatly reduced. Secondly, in the process of clockwise rotation or counterclockwise rotation of the reducer, only part of the oil bucket can participate in the oil scooping work, and the efficiency is insufficient.

[0051] The application will be described in detail below with reference to the accompanying drawings and specific embodiments and application scenarios. Figures 1 to 13 The application provides a reducer 200 automatic oil scooping lubricating mechanism, a reducer 200 and an oil pumping machine 300.

[0052] Some embodiments of the application disclose a reducer 200 automatic oil scooping lubricating mechanism, comprising a casing 110, a transmission shaft assembly, an oil receiving assembly 140 and an oil scooping assembly 150.

[0053] As shown in Figure 6 , the casing 110 has an oil pool 111 for placing lubricating oil. The oil pool 111 for placing lubricating oil is arranged in the casing 110. The lubricating oil in the oil pool 111 is used to lubricate part of the components of the reducer 200. There is no need to separately arrange an oil tank outside, which is beneficial to reduce the occupied space of the entire reducer 200.

[0054] The transmission shaft assembly is arranged in the casing 110. The transmission assembly is a component for transmitting motor torque. Part of the structure of the transmission shaft assembly is immersed in the lubricating oil in the oil pool 111. In the process of rotating the transmission shaft assembly, splashing can be generated to preliminarily lubricate part of the components in the casing 110.

[0055] As shown in Figure 1 , Figure 2 and Figure 8As shown, the oil scooping assembly 150 includes a plurality of oil scooping buckets 151, which are arranged equidistantly along the circumference of the transmission shaft assembly, and the oil receiving assembly 140 is arranged in the casing 110. As the transmission shaft assembly rotates, the plurality of oil scooping buckets 151 bring the lubricating oil in the oil pool 111 to the oil receiving assembly 140 for storage. The working power of the oil scooping assembly 150 comes from the rotation of the transmission shaft assembly, so there is no need to additionally arrange a power source, thereby reducing the components required by the lubricating mechanism and simplifying the structure to reduce the size of the speed reducer 200.

[0056] As shown in Figure 2 , the oil scooping bucket 151 has a passage through both sides along its axial direction, and a movable bottom plate 152 is arranged in the passage, which can move axially along the passage. By arranging the movable bottom plate 152 in the oil scooping bucket 151, the transmission shaft assembly can push the movable bottom plate 152 to move axially under the action of centrifugal force and fluid pressure during clockwise rotation or counterclockwise rotation, so that each oil scooping bucket 151 can participate in the oil scooping work, improve the oil extraction efficiency, increase the oil extraction amount per unit time, speed up the circulation, increase the heat dissipation efficiency, and ensure the low failure rate of the transmission shaft assembly.

[0057] Secondly, during the movement of the movable bottom plate 152 in the oil scooping bucket 151, the movable bottom plate 152 will scrape off the sludge accumulated in the oil scooping bucket 151 and discharge the sludge into the oil receiving assembly 140 for storage, thereby ensuring that the passage will not be blocked by the sludge, thereby maintaining the oil extraction efficiency and oil discharge efficiency to a certain extent, and sufficient oil is supplied to the oil receiving assembly 140.

[0058] In addition, the way of scraping the sludge and discharging it to the oil receiving assembly 140 for storage also realizes the self-cleaning of the lubricating oil in the oil pool 111 and prevents the accumulation of sludge.

[0059] Specifically, as shown in Figure 2 , the two sides of the oil scooping bucket 151 in the axial direction respectively have a plurality of inwardly converging flaps 1511 to limit the falling of the movable bottom plate 152. By arranging the inwardly converging flaps 1511, the movement of the movable bottom plate 152 can be limited, and under the action of centrifugal force and fluid pressure, the movable bottom plate 152 moves axially to abut against the flaps 1511 and cannot continue to move, thereby avoiding the falling of the movable bottom plate 152 from the oil scooping bucket 151.

[0060] As a preferred embodiment of the present embodiment, the number of flaps 1511 on each side of the oil scooping bucket 151 in the axial direction is two.

[0061] As shown in Figure 1 , Figure 3 , Figure 11 and Figure 12As shown, the lubricating oil groove 112 is arranged in the casing 110 and connected with the oil receiving assembly 140 and the transmission shaft assembly. With the rotation of the transmission shaft assembly, the plurality of oil scoops 151 bring the lubricating oil in the oil pool 111 to the oil receiving assembly 140 and flow to the transmission shaft assembly through the lubricating oil groove 112. The lubricating oil captured by the plurality of oil scoops 151 is collected by the oil receiving assembly 140 and then directly delivered to the friction pair interface of the transmission shaft assembly through the lubricating oil groove 112 in the casing 110, so that the transmission shaft assembly is effectively lubricated, and the forced flow of the lubricating oil continuously takes away the heat of the transmission shaft assembly, especially suitable for the heat dissipation requirement of the pumping unit 300 under the low-speed heavy-load working condition, and avoids the randomness of the traditional splash lubrication.

[0062] As shown in Figure 1 , Figure 4 , Figure 6 and Figure 7 , the transmission shaft assembly includes a low-speed shaft system 120 and an intermediate shaft system 130, the low-speed shaft system 120 is connected with the casing 110 through a first bearing 122, the intermediate shaft system 130 is connected with the casing 110 through a second bearing 131, and the two ends of the lubricating oil groove 112 are respectively connected to the first bearing 122 and the second bearing 131, and the oil scooping assembly 150 is arranged in the low-speed shaft system 120 and / or the intermediate shaft system 130.

[0063] With the rotation of the low-speed shaft system 120 and / or the intermediate shaft system 130, the oil scooping assembly 150 brings the lubricating oil in the oil pool 111 to the oil receiving assembly 140 and flows to the first bearing 122 and the second bearing 131 through the lubricating oil groove 112. The lubricating oil captured by the oil scooping assembly 150 is collected by the oil receiving assembly 140 and then directly delivered to the friction pair interface of the first bearing 122 and the second bearing 131 through the lubricating oil groove 112 in the casing 110, so that the first bearing 122 and the second bearing 131 are effectively lubricated, and the forced flow of the lubricating oil continuously takes away the heat of the first bearing 122 and the second bearing 131, especially suitable for the heat dissipation requirement of the pumping unit 300 under the low-speed heavy-load working condition, and avoids the randomness of the traditional splash lubrication.

[0064] Specifically, as shown in Figure 1 and Figure 8 , the low-speed shaft system 120 has a first gear 121, and the oil scooping assembly 150 is arranged on the spoke of the first gear 121. By arranging the oil scooping assembly 150 on the spoke of the first gear 121, no other useful position is occupied, and the structure is more compact. At the same time, in the process of rotating the first gear 121, the oil scooping assembly 150 can also play a role in patting the lubricating oil, thereby improving the splash effect and generating more oil mist to improve the lubrication effect on other components.

[0065] The intermediate shaft system 130 has a second gear, and as some alternatives of the embodiment, the oil scooping assembly 150 can also be arranged on the spokes of the second gear, or the spokes of the first gear 121 and the second gear are both provided with the oil scooping assembly 150.

[0066] In the embodiment, the casing 110 is provided with bearing seats corresponding to the positions of the first bearing 122 and the second bearing 131, so as to fixedly install the first bearing 122 and the second bearing 131. The bearing seats have through holes communicating with the oil pool 111, so that the lubricating oil passing through the first bearing 122 and the second bearing 131 can return to the oil pool 111, so as to supplement the lubricating oil in the oil pool 111.

[0067] In some embodiments, the reducer 200 is a one-stage reducer 200. At this time, the intermediate shaft system 130 is the input end of the reducer 200, and the intermediate shaft system 130 is directly connected or connected through a shaft coupling with the output shaft of the motor; the low-speed shaft system 120 is the output end of the reducer 200, and drives the working machine directly through a shaft coupling, a transmission shaft, etc.

[0068] In some embodiments, the reducer 200 is a two-stage reducer 200, and the reducer 200 is further provided with a high-speed shaft system 160. At this time, the high-speed shaft system 160 is the input end of the reducer 200, and the high-speed shaft system 160 is directly connected or connected through a shaft coupling with the output shaft of the motor; the intermediate shaft system 130 is located between the high-speed shaft system 160 and the low-speed shaft system 120, and plays a role of transition and power transmission; the low-speed shaft system 120 is the output end of the reducer 200, and drives the working machine directly through a shaft coupling, a transmission shaft, etc.

[0069] Correspondingly, the diameter of the low-speed shaft system 120 is greater than the diameter of the intermediate shaft system 130, and the size of the intermediate shaft system 130 is greater than the size of the low-speed shaft system 120.

[0070] In the embodiment, the reducer 200 is preferably a two-stage reducer 200. Compared with the one-stage reducer 200, the two-stage reducer 200 can be better applied to the pumping unit 300, which can realize a more compact structure, a more optimal gear stress distribution, and a higher comprehensive efficiency while meeting the large output torque and low speed required by the pumping unit 300. The two-stage reduction divides the total transmission ratio through the high-speed shaft system 160 and the low-speed shaft system 120, avoiding the problem that a single-stage reduction must use an oversized gear to achieve the same speed ratio, significantly reducing the volume and weight of the reducer 200, and being more convenient for well site installation and maintenance; at the same time, the transition of the intermediate shaft system 130 makes the small gear of the high-speed shaft system 160 bear a smaller torque, and although the large gear of the low-speed shaft system 120 bears a large torque, its size is relatively controllable, which optimizes the bending strength and contact stress distribution of the gear, improves the carrying capacity and service life, and is more suitable for the long-term, heavy-load, and impact working conditions of the pumping unit 300.

[0071] In some embodiments, the oil scoop assembly 150 is disposed on the low-speed shafting 120 .

[0072] In some embodiments, the oil scoop assembly 150 is disposed on the intermediate shaft system 130 .

[0073] In some embodiments, the oil scoop assembly 150 is disposed on the low-speed shafting 120 and the intermediate shafting 130 .

[0074] Among them, this embodiment preferably adopts the solution in which the oil scooping assembly 150 is arranged on the low-speed shaft system 120. The low-speed shaft system 120 bears the maximum torque and has the lowest rotation speed, which is prone to high temperature and high pressure, and requires a more sufficient amount of lubricating oil. The linear speed of the low-speed shaft system 120 immersed in the oil pool 111 is relatively low, so that the oil scooping assembly 150 can more stably carry a sufficient amount of lubricating oil, avoiding oil splashing or oil stirring loss caused by excessive rotation speed of the intermediate shaft system 130. Secondly, the low-speed shaft system 120 has the largest diameter, which can provide a larger installation space and stronger support for the oil scooping assembly 150, avoiding vibration failure under high-speed rotation; at the same time, the low-speed shaft system 120 is located closer to the bottom of the oil pool 111, and the oil immersion depth is greater, ensuring that the oil scooping action is continuous and effective.

[0075] like Figure 8 As shown, the axial direction of the oil scoop barrel 151 is obliquely intersected with the radial direction of the low-speed shaft system 120 and / or the intermediate shaft system 130. By obliquely intersecting the axial direction of the oil scoop barrel 151 with the radial direction of the low-speed shaft system 120 and / or the intermediate shaft system 130, as shown in FIG. Figure 8 As shown by α in FIG, the oil scoop bucket 151 can pour more lubricating oil onto the oil receiving assembly 140 in a shorter time.

[0076] like Figure 8 As shown, when the edge of the oil scoop barrel 151 exceeds the edge of the oil receiving assembly 140, the axis of the oil scoop barrel 151 and the oil receiving assembly 140 have an angle. Figure 8 As shown by the auxiliary line O1 in FIG, the amount of sludge with poor fluidity received can be reduced, thereby increasing the cleaning interval of the oil receiving assembly 140 .

[0077] like Figure 8 As shown, when the scoop barrel 151 is immersed in the lubricating oil in the oil pool 111 and has not moved to a certain position at the bottom of the low-speed shafting 120 and / or the intermediate shafting 130, the axial direction of the scoop barrel 151 is parallel to the inner bottom of the oil pool 111. By keeping the axial direction of the scoop barrel 151 parallel to the inner bottom of the oil pool 111 when the scoop barrel 151 is immersed in the lubricating oil in the oil pool 111 and has not moved to a certain position at the bottom of the low-speed shafting 120 and / or the intermediate shafting 130, as much lubricating oil as possible in the upper layer can be pumped out, thereby reducing the amount of impurities.

[0078] As Figure 5 , Figure 11 and Figure 12 shown, the casing 110 is provided with a sludge oil groove 113, one end of the sludge oil groove 113 is communicated with the oil receiving assembly 140, and the other end is detachably connected with an oil receiving bottle 171. The oil receiving assembly 140 includes an oil receiving disc 141 and a plurality of support frames 142, the oil receiving disc 141 is connected with the casing 110 through the support frames 142; at least two of the support frames 142 have ramps 1421, one of the ramps 1421 is communicated with the oil receiving disc 141 and the lubricating oil groove 112, and the other ramp 1421 is communicated with the sludge oil groove 113. The oil receiving disc 141 is fixed through the support frames 142, the oil scooping assembly 150 brings the lubricating oil in the oil pool 111 to the oil receiving disc 141 for storage, part of the lubricating oil flows to the first bearing 122 and the second bearing 131 through the lubricating oil groove 112 to lubricate the first bearing 122 and the second bearing 131, another part of the lubricating oil carries part of the sludge to flow to the oil receiving bottle 171 through the sludge oil groove 113 for storage, and the clean lubricating oil flows back to the casing 110, thereby discharging the sludge in the casing 110 without stopping the machine. At the same time, by observing the volume, color and texture of the sludge in the oil receiving bottle 171, the sludge condition in the casing 110 can be intuitively reflected, without stopping the machine or disassembling the equipment, the sludge accumulation amount can be recorded regularly, and the pollution rate of the lubricating oil can be quantitatively evaluated. Moreover, the oil receiving bottle 171 is detachably connected, and the oil receiving bottle 171 can be replaced, without stopping the machine during replacement or cleaning, and the operation time is shortened.

[0079] Correspondingly, the casing 110 is provided with a valve 172 corresponding to the sludge discharge channel, which can be closed when the oil receiving bottle 171 needs to be replaced.

[0080] As Figure 9 and Figure 10 shown, the end of the sludge oil groove 113 away from the oil receiving assembly 140 is connected with the oil receiving bottle 171 through a four-way valve 170; the other two interfaces of the four-way valve 170 are connected with an oil source and the inside of the casing 110, respectively. The four-way valve 170 can switch the oil flow direction to realize directional discharge of the sludge to the oil receiving bottle 171 or lubrication of the oil source, without stopping the machine. At the same time, by integrating the sludge discharge, oil supplement and internal circulation functions through the four-way valve 170, the pipeline layout is simplified, and the risk of leakage is reduced.

[0081] As Figure 11 and Figure 12As shown, the inner wall of the casing 110 is provided with an oil addition groove 115, which extends along the circumference of the casing 110, and the end of the oil addition groove 115 is communicated with the inside of the casing 110 through an oil injection hole. The inner wall of the casing 110 is also provided with a through groove 116 corresponding to the oil addition groove 115, which makes the area of the oil addition groove 115 close to the top communicate with the inside of the casing 110. The clean lubricating oil discharged from the mud discharge channel and the lubricating oil supplemented from the oil source enter the inside of the casing 110 through the oil injection hole of the oil addition groove 115.

[0082] Since the newly supplemented lubricating oil has a low temperature and a high viscosity, it will have a great impact on the running parts. Therefore, by extending the oil addition groove 115 along the circumference of the casing 110, heat exchange between the high temperature in the casing 110 and the newly added lubricating oil is facilitated. The through groove 116 makes the oil addition groove 115 communicate with the inside of the casing 110, which further increases the heat exchange efficiency, and the oil addition groove 115 can receive the lubricating oil splashed in the casing 110, better heat exchange the newly added lubricating oil, and ensure that the lubricating oil flowing into the casing 110 has a certain temperature.

[0083] As shown in Figure 11 and Figure 12 , the end of the oil addition groove 115 extends to the area corresponding to the high-speed shaft system 160. By extending the end of the oil addition groove 115 to the area corresponding to the high-speed shaft system 160, the newly added lubricating oil flows through the oil addition groove 115 to the casing 110 in the area corresponding to the high-speed shaft system 160, and then flows to the casing 110 in the area corresponding to the low-speed shaft system 120. Since the low-speed shaft system 120 is small in size and weak in agitation, the stratified flow of preheated oil is maintained, which not only reduces heat loss, but also reduces the risk of air bubbles and oxidation caused by agitation of the oil. At the same time, the new oil absorbs heat when flowing through the area corresponding to the high-speed bearing in the casing 110, and then slowly flows to the area corresponding to the low-speed bearing in the casing 110, avoiding the increase of viscous resistance caused by the direct contact of cold oil with the low-temperature shaft system.

[0084] As shown in Figure 5 , the casing 110 is provided with an overflow port 114, and the inside of the casing 110 and the area close to the top of the mud discharge groove 113 are communicated through the overflow port 114. Since the mud discharge groove 113 is connected with the oil receiving bottle 171, the closure of the oil receiving bottle 171 cannot guarantee the normal flow of lubricating oil. In order to prevent the lubricating oil from overflowing and causing the oil mud to be unable to be collected, an overflow port 114 is provided to communicate with the mud discharge groove 113, so that the subsequent lubricating oil can overflow, ensuring that the lubricating oil can flow along the mud discharge groove 113 for a distance, creating an opportunity for sedimentation therebetween, storing some oil mud, and allowing the oil mud to slowly replace the clean lubricating oil in the bottle. When part of it is replaced, it can be seen from the transparent oil receiving bottle 171, so as to judge whether the oil should be changed or the bearing operating condition should be paid more attention to.

[0085] As shown in Figure 3 The oil receiving tray 141 has a first overflow pipe 1411, which is in communication with one of the slopes 1421, and the inlet position of the first overflow pipe 1411 is higher than the inner bottom of the oil receiving tray 141. By means of the inlet position of the first overflow pipe 1411 being higher than the inner bottom of the oil receiving tray 141, the oil sludge in the oil receiving tray 141 can be prevented from entering the lubricating oil groove 112 through the first overflow pipe 1411, thereby ensuring the reliability of lubrication.

[0086] As shown in Figure 3 The oil receiving tray 141 has a second overflow pipe 1412, which is in communication with one of the slopes 1421, and the inlet position of the second overflow pipe 1412 is close to the inner bottom of the oil receiving tray 141. By means of the inlet position of the second overflow pipe 1412 being close to the inner bottom of the oil receiving tray 141, the oil sludge deposited at the bottom of the oil receiving tray 141 can pass through the second overflow pipe 1412 and finally enter the oil receiving bottle 171, so as to observe the oil sludge condition in the oil receiving tray 141.

[0087] Some embodiments of the present application also disclose a speed reducer 200, as shown in Figure 13 The speed reducer 200 comprises an automatic oil scooping lubricating mechanism.

[0088] As a preferred embodiment of the present application, the speed reducer 200 is applied to the pumping unit 300 to adapt to the normal operation of the pumping unit 300 under the vibration working condition. Naturally, the speed reducer 200 is not limited to be applied to the pumping unit 300, but can also be applied to other devices, such as a crusher, a gantry crane, a road roller, etc.

[0089] Some embodiments of the present application also disclose a pumping unit 300, as shown in Figure 13 The pumping unit 300 comprises the speed reducer 200.

[0090] It should be noted that in the present document, the terms “comprising”, “containing” or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement “comprising a…” does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0091] Furthermore, it is to be understood that the scope of the methods and apparatus of the present application are not limited to the details of the foregoing description, but can be practiced with modifications within the scope of the appended claims. It is also to be understood that the foregoing description and the following examples are illustrative of the present application and are not in any sense limiting.

[0092] The above descriptions are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A reducer automatic oil scooping lubrication mechanism characterized by, The application relates to a lubricating mechanism for a reducer, comprising: a casing having an oil pool for containing lubricating oil; a transmission shaft assembly arranged in the casing; an oil receiving assembly arranged in the casing; a lubricating oil groove arranged in the casing and connected with the oil receiving assembly and the transmission shaft assembly; a scooping assembly comprising a plurality of scooping buckets which are arranged equidistantly along the circumference of the transmission shaft assembly; the scooping bucket has a channel penetrating through both sides along the axial direction of the scooping bucket, and a movable bottom plate is arranged in the channel and can move along the axial direction of the channel; wherein, with the rotation of the transmission shaft assembly, the plurality of scooping buckets bring the lubricating oil in the oil pool to the oil receiving assembly and flow to the transmission shaft assembly through the lubricating oil groove; the casing is further provided with a sludge oil groove, one end of the sludge oil groove is communicated with the oil receiving assembly, and the other end is detachably connected with an oil receiving bottle.

2. The automatic oil scooping lubrication mechanism of a speed reducer according to claim 1, characterized by, the transmission shaft assembly comprises a low-speed shaft system and an intermediate shaft system, the low-speed shaft system is connected with the casing through a first bearing, and the intermediate shaft system is connected with the casing through a second bearing; two ends of the lubricating oil groove are communicated with the first bearing and the second bearing respectively, and the scooping assembly is arranged in the low-speed shaft system and / or the intermediate shaft system.

3. The automatic oil scooping lubrication mechanism of a speed reducer according to claim 1, characterized by, both sides of the scooping bucket in the axial direction are respectively provided with a plurality of inwardly converging flaps to limit the movable bottom plate from falling off.

4. The automatic oil scooping lubrication mechanism for a reducer according to claim 2, characterized in that: the axial direction of the scooping bucket is oblique to the radial direction of the low-speed shaft system and / or the intermediate shaft system; and / or, when the edge of the scooping bucket exceeds the edge of the oil receiving assembly, the axis of the scooping bucket has an angle with the oil receiving assembly; and / or, when the scooping bucket is immersed in the lubricating oil in the oil pool and is not moved to a certain position at the bottom of the low-speed shaft system and / or the intermediate shaft system, the axial direction of the scooping bucket is parallel to the inner bottom of the oil pool.

5. The automatic oil scooping lubrication mechanism of a speed reducer according to claim 1, characterized by, the oil receiving assembly comprises an oil receiving disc and a plurality of support frames, the oil receiving disc is connected with the casing through the support frames; at least two of the support frames have ramps, one of the ramps is communicated with the oil receiving disc and the lubricating oil groove, and the other ramp is communicated with the sludge oil groove.

6. The automatic scooping lubrication mechanism of a speed reducer according to claim 5, characterized in that, the oil receiving disc is provided with a first overflow pipe which is communicated with one of the ramps, and the inlet position of the first overflow pipe is higher than the inner bottom of the oil receiving disc; and / or, the oil receiving disc is provided with a second overflow pipe which is communicated with one of the ramps, and the inlet position of the second overflow pipe is arranged close to the inner bottom of the oil receiving disc.

7. The automatic scooping lubrication mechanism of a speed reducer according to claim 1, characterized in that, the casing is provided with an overflow port, and the inside of the casing and the area close to the top of the sludge oil groove are communicated through the overflow port.

8. A speed reducer characterized by, the application further discloses a reducer comprising the automatic scooping lubricating mechanism.

9. A pumping unit characterized by, the application further discloses a reducer comprising the lubricating mechanism.

Images