A reducer bearing housing structure, a reducer, and an oil pumping unit.

Abstract

This invention relates to the field of oil pumping unit technology, and discloses a reducer bearing housing structure, a reducer, and an oil pumping unit. The reducer bearing housing structure includes a bearing disposed within a bearing housing, forming a lubrication chamber; the bearing housing has an oil inlet communicating with the outside and the lubrication chamber; the bearing housing also includes an annular chamber; a collection component rotatably disposed within the annular chamber; and a drive component disposed on the bearing; as the bearing rotates, the drive component intermittently contacts the collection component to drive the collection component to rotate; wherein, a sedimentation tank communicating with the annular chamber is provided at the inner bottom of the bearing housing corresponding to the lubrication chamber, so that sludge settles in the collection component. The reducer includes a housing and the reducer bearing housing structure, the reducer bearing housing structure being disposed within the housing. The oil pumping unit includes a motor, an oil pumping unit body, and a reducer, the motor being connected to the oil pumping unit body via the reducer. This invention solves the technical problem of sludge easily accumulating in the bearing housing in related technologies.

Description

Technical Field

[0001] This invention relates to the field of oil pumping unit technology, and in particular to a reducer bearing housing structure, a reducer, and an oil pumping unit. Background Technology

[0002] Pumping units are key pieces of equipment used in oil extraction to extract crude oil from oil wells, and are commonly found in onshore oil fields and offshore platforms. Their core function is to transmit surface power to the downhole pump, overcome reservoir pressure, and lift the crude oil to the surface.

[0003] The reducer is one of the core components of the pumping unit. It is used to transmit the power of the motor to the crank that drives the pumping unit, so that the crank rotates and the walking beam of the pumping unit swings back and forth during the rotation.

[0004] Currently, some speed reducers use an oil-scooping mechanism to add lubricating oil from the bottom of the reducer housing to the bearing housing to lubricate the bearings inside. However, sludge carried in the lubricating oil can easily accumulate inside the bearing housing, affecting the smoothness of the bearings. Summary of the Invention

[0005] This application discloses a reducer bearing housing structure, a reducer, and an oil pump to solve the technical problem of sludge easily accumulating in the bearing housing in related technologies.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] In a first aspect, this application discloses a reducer bearing housing structure, comprising:

[0008] The bearing is housed inside the bearing housing and forms a lubrication chamber with the bearing housing;

[0009] The bearing housing has an oil inlet that connects to the outside and the lubrication chamber; the bearing housing also has an annular chamber.

[0010] The collection components are rotatably positioned within the annular chamber;

[0011] A drive assembly is mounted on the bearing; as the bearing rotates, the drive assembly intermittently contacts the collection assembly to drive the collection assembly to rotate.

[0012] The bearing housing has a sedimentation tank at the bottom of the lubrication chamber that connects to the annular chamber, so that sludge can settle in the collection component.

[0013] In some designs, a portion of the annular chamber near the top of the bearing housing is connected to the lubrication chamber to allow lubricating oil to flow back.

[0014] In some designs, the radial dimension of the annular chamber near the top of the bearing housing decreases intermittently, and at least part of the annular chamber communicates with the lubrication chamber.

[0015] In some designs, the reducer bearing housing structure also includes an annular plate, with an annular cavity extending radially inward through the bearing housing, and the annular plate disposed within the annular cavity.

[0016] The annular plate has a screen corresponding to the annular chamber, so that the annular chamber can communicate with the lubrication chamber.

[0017] In some designs, the bearing housing has a raised structure on the inner wall corresponding to the annular chamber;

[0018] And / or, the screen protrudes toward the annular chamber;

[0019] And / or, the outer wall of the bearing housing is also provided with a mud discharge port that connects to the annular chamber, and the mud discharge port is used to connect to a negative pressure device through a pipe;

[0020] And / or, the bearing housing is also provided with an oil return chamber, and a first labyrinth seal structure for connecting with the shaft is provided between the oil return chamber and the lubrication chamber; the bearing housing is also provided with an oil return port that connects to the outside and the oil return chamber.

[0021] In some designs, the protrusion structure has a first arcuate surface and a second arcuate surface, the first arcuate surface being inclined toward the lubrication chamber from the end away from the second arcuate surface to the end closer to the second arcuate surface, and the second arcuate surface being inclined toward the lubrication chamber from the end away from the first arcuate surface to the end closer to the second arcuate surface.

[0022] And / or, the screen has a third arcuate surface and a fourth arcuate surface, the third arcuate surface being inclined toward the annular cavity from the end away from the fourth arcuate surface to the end closer to the fourth arcuate surface, and the fourth arcuate surface being inclined toward the annular cavity from the end away from the third arcuate surface to the end closer to the third arcuate surface.

[0023] And / or, the bearing housing is also provided with a sealed chamber, and a sealing ring is provided in the sealed chamber; a second labyrinth seal structure for connection with the shaft is provided between the sealing ring and the oil return chamber.

[0024] In some schemes, the collection component includes two mounting plates and several partitions, with the two mounting plates arranged facing each other and the partitions disposed between the two mounting plates;

[0025] The partition includes a middle section and a movable section. The middle section is connected to two mounting plates, and the middle section and the movable section are slidably connected along the radial direction of the lubrication chamber by a first elastic element.

[0026] In some embodiments, the drive assembly includes a connecting part and a stop part, the stop part being slidably connected radially along the lubrication chamber via a second elastic member, the stop part being used to contact the mounting plate to drive the collecting assembly to rotate;

[0027] And / or, the collecting component and / or driving component are provided with bristles that intermittently contact the screen as the bearing rotates.

[0028] Secondly, this application also discloses a speed reducer, including a housing and the speed reducer bearing housing structure in the first aspect;

[0029] The reducer bearing housing is located within the machine casing.

[0030] Thirdly, this application also discloses an oil pumping unit, including a motor, an oil pumping unit body, and the reducer mentioned in the second aspect;

[0031] The motor is connected to the pumping unit body via a reducer.

[0032] The technical solution adopted in this invention can achieve the following beneficial effects:

[0033] In the reducer bearing housing structure of this application, lubricating oil is added to the lubrication chamber through the oil inlet to lubricate the bearings inside the housing. After a period of use or long-term use, the lubricating oil will carry sludge into the lubrication chamber. Due to the presence of the sedimentation tank, the sludge will settle into the collection component under the action of gravity. As the bearing rotates, the drive component and the collection component come into intermittent contact, driving the collection component to rotate, thereby carrying out the sludge that has settled in the collection component and preventing sludge from accumulating in the bearing housing. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 These are isometric views of the reducer bearing housing structure disclosed in some embodiments of this application;

[0036] Figure 2 This is a side view of the reducer bearing housing structure disclosed in some embodiments of this application;

[0037] Figure 3 yes Figure 2 A sectional view of the FF plane;

[0038] Figure 4 yes Figure 2 Sectional view of the middle GG plane Figure 1 ;

[0039] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0040] Figure 6 yes Figure 2 Sectional view of the middle GG plane Figure 2 ;

[0041] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0042] Figure 8 yes Figure 2 Sectional view of the middle GG plane Figure 3 ;

[0043] Figure 9 yes Figure 8 Enlarged view of point C in the middle;

[0044] Figure 10 These are isometric views of the collection components disclosed in some embodiments of this application;

[0045] Figure 11 yes Figure 10 Enlarged view at point D;

[0046] Figure 12 This is a schematic diagram of the structure of the partition disclosed in some embodiments of this application. Figure 1 ;

[0047] Figure 13 This is a schematic diagram of the structure of the partition disclosed in some embodiments of this application. Figure 2 ;

[0048] Figure 14 This is an isometric view of the annular plate disclosed in some embodiments of this application;

[0049] Figure 15 These are isometric views of the bearings and drive assemblies disclosed in some embodiments of this application;

[0050] Figure 16 yes Figure 15 Enlarged view at point E in the middle;

[0051] Figure 17 These are isometric views of the reducer disclosed in some embodiments of this application;

[0052] Figure 18 This is an isometric view of an oil pumping unit disclosed in some embodiments of this application.

[0053] In the picture:

[0054] 100-Reducer bearing housing structure, 110-Bearing housing, 111-Lubrication chamber, 112-Annular chamber, 113-Oil inlet, 114-Sludge outlet, 115-Return oil chamber, 1151-Oil return outlet, 116-Sealing chamber, 117-Protruding structure, 1171-First arc-shaped surface, 1172-Second arc-shaped surface, 118-First labyrinth seal structure, 119-Second labyrinth seal structure, 120-Bearing, 121-Inner ring, 130-Collection assembly, 131-Mounting plate, 132-Partition plate, 1321-Intermediate part, 1322-Moving part, 140-Drive assembly, 141-Connecting part, 142-Stop part, 150-Annular plate, 151-Screen, 1511-Third arc-shaped surface, 1512-Fourth arc-shaped surface, 152-Notch, 160-Sealing ring;

[0055] 200 - Reducer, 210 - Housing, 220 - Shaft;

[0056] 300-Pumping unit, 310-Pumping unit body, 311-Support, 312-Walking beam, 313-Donkey head, 314-Connecting rod assembly, 320-Motor. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0058] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0059] Lubricating oil can develop sludge due to high-temperature oxidation and contamination. While the oil-scooping mechanism in the gearbox adds lubricating oil from the bottom of the gearbox to the bearing housing, it can also carry some sludge into the bearing housing, causing it to accumulate. Over time, the amount of sludge in the lubricating oil increases, leading to even more sludge entering the bearing housing and ultimately affecting the smoothness of the bearing.

[0060] The following is in conjunction with the appendix Figures 1 to 18 The present application provides a detailed description of a reducer bearing housing structure 100, a reducer 200, and an oil pumping unit 300 through specific embodiments and application scenarios.

[0061] Some embodiments of this application disclose a reducer bearing housing structure 100, including a bearing 120, a bearing housing 110, a collection assembly 130, a drive assembly 140, and an annular plate 150.

[0062] like Figure 1 , Figure 2 and Figure 3 As shown, the bearing 120 is disposed within the bearing housing 110, forming a lubrication chamber 111 with the bearing housing 110. The lubrication chamber 111 can temporarily store a portion of lubricating oil, allowing the lubricating oil to lubricate the bearing 120 within the bearing housing 110. Furthermore, the presence of the lubrication chamber 111 ensures that a sufficient amount of lubricating oil can participate in the lubrication of the bearing 120, thereby guaranteeing the lubrication effect of the bearing 120.

[0063] In this embodiment, the bearing 120 is used to connect to the shaft 220 of the reducer 200.

[0064] like Figure 3 As shown, the bearing housing 110 has an oil inlet 113 that connects to the outside and the lubrication chamber 111. External lubricating oil enters the lubrication chamber 111 through the oil inlet 113 to lubricate the bearing 120 inside the bearing housing 110. The oil inlet 113 is provided to facilitate the bearing housing 110 to form an open space, so as to replenish the lubricating oil in the lubrication chamber 111 and ensure the lubrication effect of the bearing 120.

[0065] It should be noted that the end of the bearing housing 110 is connected to the outside so that the lubricating oil after being lubricated by the bearing 120 can be discharged to the outside of the bearing housing 110.

[0066] In this embodiment, the bearing housing 110 is installed on the housing 210 of the reducer 200, and the lubricating oil after being lubricated by the bearing 120 is finally discharged into the oil sump inside the housing 210 for storage.

[0067] like Figures 3-9As shown, the bearing housing 110 has an annular chamber 112, and the collecting component 130 is rotatably disposed in the annular chamber 112. The bearing housing 110 has a sedimentation tank communicating with the annular chamber 112 at its inner bottom corresponding to the lubrication chamber 111, allowing sludge to settle in the collecting component 130. The sludge will settle naturally under gravity. Due to the presence of the sedimentation tank, the sludge can be guided to settle onto the collecting component 130 within the annular chamber 112. Furthermore, as the collecting component 130 rotates, different positions of the collecting component 130 communicate with the sedimentation tank, allowing the collecting component 130 to hold more sludge and preventing sludge accumulation in the lubrication chamber 111.

[0068] like Figure 3 and Figure 15 As shown, the drive assembly 140 is mounted on the bearing 120. As the bearing 120 rotates, the drive assembly 140 intermittently contacts the collecting assembly 130 to drive the collecting assembly 130 to rotate. By directly mounting the drive assembly 140 on the bearing 120 and using an intermittent contact design to drive the collecting assembly 130, the rotation of the bearing 120 itself serves as the power source, eliminating the need for additional energy input. Furthermore, the intermittent contact between the drive assembly 140 and the collecting assembly 130 causes the collecting assembly 130 to rotate intermittently, reducing rotational wear while allowing the collecting assembly 130 sufficient time to collect the settled sludge.

[0069] like Figure 4 , Figure 6 and Figure 8 As shown, a portion of the annular chamber 112 near the top of the bearing housing 110 is connected to the lubrication chamber 111 to allow lubricating oil to flow back. Due to the presence of the sedimentation tank, some of the lubricating oil in the lubrication chamber 111 also enters the collection assembly 130 and is stored in the annular chamber 112 as the collection assembly 130 rotates. Therefore, by connecting the annular chamber 112 near the top of the bearing housing 110 to the lubrication chamber 111, some of the lubricating oil in the annular chamber 112 can flow back into the lubrication chamber 111 under the action of gravity, ensuring that there is enough lubricating oil in the lubrication chamber 111 to participate in the lubrication of the bearing 120.

[0070] like Figure 4 , Figure 6 and Figure 8As shown, the radial dimension of the annular chamber 112 near the top of the bearing housing 110 decreases intermittently, and at least part of the annular chamber 112 is connected to the lubrication chamber 111. Preferably, the annular chamber 112 with smaller radial dimensions is connected to the lubrication chamber 111. The intermittent decrease in radial dimension of the annular chamber 112 near the top of the bearing housing 110 forms a periodic contraction channel; when the collecting assembly 130 rotates, the sludge adhering to its surface is mechanically stripped off due to spatial compression when passing through the contraction section, and at the same time, the flow velocity of the lubricating oil increases when passing through the contraction section, forming a low-pressure zone, which accelerates the flow of clean lubricating oil to the connection port; and, the annular chamber 112 with smaller radial dimensions is connected to the lubrication chamber 111, and by utilizing the combined effect of gravity and hydrodynamics, the lubricating oil with separated sludge at the top of the annular chamber 112 is efficiently guided back to the lubrication chamber 111, realizing the simultaneous enhancement of sludge cleaning and lubricating oil circulation.

[0071] like Figure 4 , Figure 6 , Figure 8 and Figure 14 As shown, the annular chamber 112 extends radially inward through the bearing housing 110, and the annular plate 150 is disposed within the annular chamber 112. The radial inward extension of the annular chamber 112 through the bearing housing 110 facilitates machining the annular chamber 112 within the bearing housing 110, and the annular plate 150, as an independent part, can be machined separately, thereby reducing the overall machining difficulty. Furthermore, the placement of the annular plate 150 within the annular chamber 112 separates the annular chamber 112 from the lubrication chamber 111, preventing sludge carried by the collection assembly 130 from falling back into the lubrication chamber 111.

[0072] like Figure 5 , Figure 7 and Figure 9 As shown, the annular plate 150 has a screen 151 corresponding to the annular chamber 112, so that the annular chamber 112 communicates with the lubrication chamber 111. Preferably, the annular plate 150 has a screen 151 corresponding to the annular chamber 112 with a smaller radial dimension. The screen 151 is provided in the region of the radially constricted section of the annular plate 150 to physically filter and intercept the fine sludge particles stripped by the collection component 130, while allowing clean lubricating oil to flow back to the lubrication chamber 111 efficiently. The screen 151 maintains the necessary communication between the annular chamber 112 and the lubrication chamber 111 to achieve lubricating oil circulation, while blocking the path of sludge to re-enter the lubrication chamber 111 with the returned lubricating oil, thereby improving the long-term stability of the lubrication cleanliness of the bearing 120.

[0073] It should be noted that the screen 151 cannot completely prevent the sludge from falling back, and some sludge may fall back into the lubrication chamber 111 through the screen 151. However, the screen 151 can still isolate most of the sludge, and after the lubricating oil has been used for a long time, it can still ensure that there is less sludge accumulated in the lubrication chamber 111.

[0074] In this embodiment, as Figure 14 As shown, the annular plate 150 has a notch 152, which is a sedimentation tank, so that the lubrication chamber 111 and the annular chamber 112 can communicate.

[0075] like Figures 4-9 As shown, the bearing housing 110 has a protruding structure 117 on the inner wall of the annular chamber 112, and / or the screen 151 protrudes toward the annular chamber 112. By providing the protruding structure 117 on the inner wall of the annular chamber 112 of the bearing housing 110 and / or making the screen 151 protrude toward the annular chamber 112, a periodically shrinking structure is formed. When the collecting assembly 130 rotates, the protruding part of the protruding structure 117 and / or the screen 151 forms a dynamically changing gap space with it, periodically squeezing the sludge attached to the surface of the collecting assembly 130 to achieve mechanical stripping; at the same time, the regular abrupt change in the cross-sectional area of ​​the chamber generates local high-speed eddies in the flow field, which both washes the screen 151 to prevent clogging and accelerates the separation and sedimentation of sludge and lubricating oil.

[0076] In some embodiments, such as Figure 4 and Figure 5 As shown, the bearing housing 110 has a protruding structure 117 on the inner wall corresponding to the annular chamber 112.

[0077] In some embodiments, such as Figure 8 and Figure 9 As shown, the screen 151 protrudes toward the annular chamber 112.

[0078] In some embodiments, such as Figure 6 and Figure 7 As shown, the bearing housing 110 has a protruding structure 117 on the inner wall of the annular chamber 112, and the bearing housing 110 has a protruding structure 117 on the inner wall of the annular chamber 112.

[0079] In embodiments with protruding structure 117, such as Figure 5 and Figure 7As shown, the protruding structure 117 has a first arcuate surface 1171 and a second arcuate surface 1172. The first arcuate surface 1171 is inclined towards the lubrication chamber 111 from the end away from the second arcuate surface 1172 to the end closer to the second arcuate surface 1172. The second arcuate surface 1172 is inclined towards the lubrication chamber 111 from the end away from the first arcuate surface 1171 to the end closer to the second arcuate surface 1172. The first arcuate surface 1171 and the second arcuate surface 1172 form an intermittent shrinking structure. Through periodic compression-release changes, alternating mechanical stress is applied to the sludge when the collection assembly 130 rotates, so as to facilitate the separation of sludge and lubricating oil.

[0080] In an embodiment where the screen 151 protrudes toward the annular chamber 112, such as Figure 7 and Figure 9 As shown, the screen 151 has a third arcuate surface 1511 and a fourth arcuate surface 1512. The third arcuate surface 1511 is inclined towards the annular chamber 112 from the end away from the fourth arcuate surface 1512 to the end closer to the fourth arcuate surface 1512. The fourth arcuate surface 1512 is inclined towards the annular chamber 112 from the end away from the third arcuate surface 1511 to the end closer to the third arcuate surface 1511. The third arcuate surface 1511 and the fourth arcuate surface 1512 form an intermittent shrinking structure. Through periodic compression-release changes, alternating mechanical stress is applied to the sludge when the collection assembly 130 rotates, so as to facilitate the separation of sludge and lubricating oil.

[0081] like Figure 1 and Figure 3 As shown, the outer wall of the bearing housing 110 is also provided with a sludge discharge port 114 that connects to the annular chamber 112. The sludge discharge port 114 is used to connect to a negative pressure device via a pipe. A continuous low-pressure environment is established at the sludge discharge port 114 by the negative pressure device (gear pump), causing the sludge in the collection component 130 rotating to the sludge discharge port 114 to be directionally sucked out under pressure differential drive, thus removing the sludge and cleaning the lubricating oil, preventing excessive sludge buildup after prolonged use. Furthermore, the cleaning process does not require machine shutdown, increasing work efficiency.

[0082] In this embodiment, both sides of the sludge discharge port 114 are provided with protruding structures 117 and / or the screen 151 protrudes toward the annular chamber 112, so that when the shaft 220 rotates forward or backward, before passing through the sludge discharge port 114, the sludge and lubricating oil in the collection component 130 can be squeezed, thereby reducing the amount of lubricating oil remaining in the collection component 130 when it moves to the position of the sludge discharge port 114.

[0083] It should be noted that the negative pressure equipment is started intermittently to extract the sludge. It should also be noted that the interval between starts can be adjusted according to the lubricating oil's usage time. When the lubricating oil has been used for a shorter period, less sludge is produced, and the interval between starts can be longer; conversely, when the lubricating oil has been used for a longer period, more sludge is produced, and the interval between starts can be shorter.

[0084] like Figure 3 As shown, the bearing housing 110 also includes an oil return chamber 115. A first labyrinth seal structure 118 for connection with the shaft 220 is provided between the oil return chamber 115 and the lubrication chamber 111. The first labyrinth seal structure 118 uses spiral grooves to prevent lubricating oil leakage. However, as the shaft 220 rotates, some lubricating oil will pass through the first labyrinth seal structure 118 and accumulate into oil droplets. The oil return chamber 115 acts as a sealing buffer, storing the lubricating oil that enters the oil return chamber 115 after passing through the first sealing structure, thus eliminating the risk of oil leakage at the shaft 220 end.

[0085] like Figure 3 As shown, the bearing housing 110 is also provided with an oil return port 1151 that connects to the outside and the oil return chamber 115. Since the bearing housing 110 is directly installed on the housing 210 of the reducer 200, by providing an oil return port 1151 in the bearing housing 110 that connects to the outside and the oil return chamber 115, the lubricating oil entering the oil return chamber 115 is discharged into the oil sump of the housing 210 under the action of gravity through the oil return port 1151, maintaining the dynamic balance of the system oil volume, significantly improving the sealing reliability and eliminating the need for additional maintenance.

[0086] like Figure 3 As shown, the bearing housing 110 is also provided with a sealed chamber 116, and a sealing ring 160 is provided in the sealed chamber 116; a second labyrinth seal structure 119 for connection with the shaft 220 is provided between the sealing ring 160 and the oil return chamber 115. The second labyrinth seal structure 119 and the sealing ring 160 have a sealing effect on the bearing housing 110, further eliminating the risk of oil leakage at the shaft 220 end.

[0087] like Figure 3 and Figure 10 As shown, the collection assembly 130 includes two mounting plates 131 and several partitions 132. The two mounting plates 131 are arranged facing each other, and the partitions 132 are disposed between the two mounting plates 131. The partitions 132 divide the mounting plates 131 into independent spaces. As the collection assembly 130 rotates, oil sludge settles in each independent space, and the oil sludge in each independent space is discharged through the sludge discharge port 114. Furthermore, due to the presence of the partitions 132, the partitions 132 rotate synchronously with the mounting plates 131 to move the settled oil sludge.

[0088] like Figures 11-13As shown, the partition 132 includes a central portion 1321 and a movable portion 1322. The central portion 1321 is connected to two mounting plates 131, and the central portion 1321 and the movable portion 1322 are slidably connected radially along the lubrication chamber 111 via a first elastic member. When the movable portion 1322 contacts the protruding parts of the raised structure 117 and / or the screen 151, the movable portion 1322 can adaptively move to avoid motion interference with the protruding parts of the raised structure 117 and / or the screen 151. Furthermore, due to the presence of the first elastic member, it can be ensured that the end face of the movable portion 1322 is in close contact with the protruding parts of the raised structure 117 and / or the screen 151, so that the movable portion 1322 can drive the sludge to move.

[0089] Furthermore, due to the presence of the first arc-shaped surface 1171, the second arc-shaped surface 1172, and / or the third arc-shaped surface 1511 and the fourth arc-shaped surface 1512, the movement of the moving part 1322 is smoother during the contact with the protruding parts of the attached protrusion structure 117 and / or the screen 151.

[0090] In this embodiment, the first elastic element is preferably a spring.

[0091] In embodiments where only the protruding structure 117 is provided, such as Figure 11 As shown, a movable part 1322 is provided, and a corresponding protrusion structure 117 is provided.

[0092] In embodiments where only screen 151 has protruding portions, such as Figure 12 As shown, a movable part 1322 is provided, and it is provided corresponding to the protruding part of the screen 151.

[0093] In embodiments where the raised structure 117 and the screen 151 have protruding portions, such as Figure 13 As shown, there are two moving parts 1322, which are respectively provided for the protruding parts of the protruding structure 117 and the screen 151.

[0094] like Figure 15 and Figure 16 As shown, the drive assembly 140 includes a connecting portion 141 and a stop portion 142. The stop portion 142 is radially slidably connected to the lubrication chamber 111 via a second elastic member. The stop portion 142 is used to contact the mounting plate 131 to drive the collection assembly 130 to rotate. When the bearing 120 rotates, the drive assembly 140 rotates synchronously with the bearing 120. When the drive assembly 140 contacts the inner wall of the lubrication chamber 111, the stop portion 142 compresses the second elastic member. When the drive assembly 140 moves to the sedimentation tank, the second elastic member releases its elastic potential energy, driving the stop portion 142 to stop against the mounting plate 131 of the collection assembly 130, and using friction to drive the collection assembly 130 to rotate intermittently.

[0095] In a preferred embodiment, the contact portions of the stop portion 142 and the mounting plate 131 are respectively provided with meshing teeth, so that the stop portion 142 can drive the collecting assembly 130 to rotate.

[0096] In this embodiment, the end of the connecting part 141 is disposed on the outer wall of the inner ring 121 of the bearing 120. The inner ring 121 of the bearing 120 is provided with a keyway for connecting with the shaft 220. During the rotation of the shaft 220, the inner ring 121 of the bearing 120 rotates synchronously with the shaft 220, thereby causing the connecting part 141 to rotate.

[0097] In this embodiment, the second elastic element is preferably a spring.

[0098] The collecting assembly 130 and / or the driving assembly 140 are provided with bristles, which intermittently contact the screen 151 as the bearing 120 rotates. By providing bristles in the collecting assembly 130 and / or the driving assembly 140, the rotation of the collecting assembly 130 and / or the driving assembly 140 causes the bristles to sweep across the surface of the screen 151, preventing sludge from clogging the screen 151.

[0099] In some embodiments, bristles are disposed on the moving portion 1322 or the intermediate portion 1321 of the collecting assembly 130.

[0100] In some embodiments, bristles are disposed on the stop portion 142 of the drive assembly 140.

[0101] In some embodiments, bristles are disposed on the stop portion 142 of the drive assembly 140 and the moving portion 1322 or the intermediate portion 1321 of the collecting assembly 130.

[0102] Some embodiments of this application also disclose a speed reducer 200, such as Figure 17 As shown, it includes a housing 210 and a reducer bearing housing structure 100, with the reducer bearing housing structure 100 disposed on the housing 210.

[0103] Some embodiments of this application also disclose an oil pumping unit 300, such as Figure 18 As shown, it includes a motor 320, a pumping unit 300 body and a reducer 200. The motor 320 is connected to the pumping unit 300 body through the reducer 200.

[0104] Specifically, the pumping unit 300 includes a walking beam 312, a connecting rod assembly 314, a pumping head 313, and a support 311. The output shaft 220 of the reducer 200 is connected to the rear end of the walking beam 312 via the connecting rod assembly 314. The middle part of the walking beam 312 is rotatably connected to the support 311, and the front end of the walking beam 312 is connected to the pumping head 313. The power of the motor 320 is transmitted to the connecting rod assembly 314 through the reducer 200. Driven by the connecting rod assembly 314, the walking beam 312 and the pumping head 313 reciprocate along their height direction to achieve the purpose of pumping oil.

[0105] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A reducer bearing housing structure, characterized in that, include: The bearing is housed within a bearing housing and forms a lubrication chamber with the bearing housing. The bearing housing has an oil inlet that connects to the outside and the lubrication chamber; the bearing housing also has an annular chamber. The collection component is rotatably positioned within the annular chamber; A drive assembly is disposed on the bearing; as the bearing rotates, the drive assembly intermittently contacts the collecting assembly to drive the collecting assembly to rotate; The bearing housing has a sedimentation tank at the bottom of the lubrication chamber that communicates with the annular chamber, so that sludge can be deposited in the collection assembly. The annular cavity near the top of the bearing housing is connected to the lubrication chamber to allow lubricating oil to flow back; The radial dimension of the annular chamber near the top of the bearing housing decreases intermittently, and at least part of the annular chamber communicates with the lubrication chamber.

2. The reducer bearing housing structure according to claim 1, characterized in that, The reducer bearing housing structure also includes an annular plate, and the annular cavity extends radially inward through the bearing housing, with the annular plate disposed within the annular cavity; The annular plate has a screen corresponding to the annular chamber, so that the annular chamber is in communication with the lubrication chamber.

3. The reducer bearing housing structure according to claim 2, characterized in that, The bearing housing has a raised structure on the inner wall corresponding to the annular cavity; And / or, the screen protrudes toward the annular chamber; And / or, the outer wall of the bearing housing is also provided with a mud discharge port communicating with the annular chamber, the mud discharge port being used to connect to a negative pressure device through a pipe; And / or, the bearing housing is further provided with an oil return chamber, and a first labyrinth seal structure for connecting with the shaft is provided between the oil return chamber and the lubrication chamber; the bearing housing is further provided with an oil return port communicating with the outside and the oil return chamber.

4. The reducer bearing housing structure according to claim 3, characterized in that, The protruding structure has a first arc-shaped surface and a second arc-shaped surface. The first arc-shaped surface is inclined toward the lubrication chamber from the end away from the second arc-shaped surface to the end closer to the second arc-shaped surface. The second arc-shaped surface is inclined toward the lubrication chamber from the end away from the first arc-shaped surface to the end closer to the second arc-shaped surface. And / or, the screen has a third arcuate surface and a fourth arcuate surface, the third arcuate surface being inclined toward the annular cavity from the end away from the fourth arcuate surface to the end closer to the fourth arcuate surface, and the fourth arcuate surface being inclined toward the annular cavity from the end away from the third arcuate surface to the end closer to the third arcuate surface; And / or, the bearing housing is further provided with a sealed chamber, and a sealing ring is provided in the sealed chamber; a second labyrinth seal structure for connection with the shaft is provided between the sealing ring and the oil return chamber.

5. A reducer bearing housing structure according to claim 4, characterized in that, The collection assembly includes two mounting plates and several partitions, with the two mounting plates arranged facing each other and the partitions disposed between the two mounting plates; The partition includes a middle section and a movable section. The middle section is connected to the two mounting plates, and the middle section and the movable section are slidably connected along the radial direction of the lubrication chamber by a first elastic member.

6. A reducer bearing housing structure according to claim 5, characterized in that, The drive assembly includes a connecting part and a stop part. The stop part is slidably connected to the lubrication chamber radially via a second elastic member. The stop part is used to contact the mounting plate to drive the collecting assembly to rotate. And / or, the collecting component and / or the driving component are provided with bristles that intermittently contact the screen as the bearing rotates.

7. A speed reducer, characterized in that, Includes the housing and the reducer bearing housing structure as described in any one of claims 1-6; The reducer bearing housing structure is disposed on the housing.

8. An oil pumping unit, characterized in that, Includes a motor, a pumping unit body, and the reducer as described in claim 7; The motor is connected to the pumping unit body via the reducer.

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