Speed reducer bearing box structure, speed reducer and oil pumping unit

Abstract

The invention relates to the technical field of oil pumping units, and discloses a speed reducer bearing box structure, a speed reducer and an oil pumping unit. The reducer bearing box structure comprises a bearing which is arranged in a bearing box and forms a lubricating cavity with the bearing box; the bearing box is provided with an oil inlet communicated with the outside and the lubricating cavity; the bearing box is further provided with an annular cavity. The collecting assembly is rotationally arranged in the annular cavity; the driving assembly is arranged on the bearing; along with rotation of the bearing, the driving assembly is in intermittent contact with the collecting assembly so as to drive the collecting assembly to rotate; a precipitation tank communicated with the annular cavity is formed in the inner bottom, corresponding to the lubricating cavity, of the bearing box, so that the oil sludge is precipitated in the collecting assembly. The speed reducer comprises a machine shell and a speed reducer bearing box structure, and the speed reducer bearing box structure is arranged on the machine shell. The pumping unit comprises a motor, a pumping unit body and a speed reducer, and the motor is connected with the pumping unit body through the speed reducer. The bearing box solves the technical problem that oil sludge is easily accumulated in the bearing box in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pumping units, and in particular to a reducer bearing box structure, a reducer and an oil pumping unit. Background Art

[0002] Pumping units are key equipment used to extract crude oil from oil wells during oil production. They are commonly found in onshore oil fields and offshore platforms. Their core function is to transmit surface power to the downhole pump, overcoming reservoir pressure and lifting crude oil to the surface.

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

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

[0005] The present application discloses a reducer bearing box structure, a reducer and an oil pumping unit, so as to solve the technical problem in the related art that oil sludge is easily accumulated in the bearing box.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions: In a first aspect, the present application discloses a reducer bearing box structure, comprising: A bearing is disposed in the bearing box and forms a lubrication chamber with the bearing box; The bearing box has an oil inlet communicating with the outside and the lubrication chamber; the bearing box is also provided with an annular chamber; A collecting assembly is rotatably disposed in the annular chamber; A driving assembly is disposed on the bearing; as the bearing rotates, the driving assembly intermittently contacts the collecting assembly to drive the collecting assembly to rotate; Among them, the inner bottom of the bearing box corresponding to the lubrication chamber is provided with a sedimentation tank connected to the annular chamber, so that the sludge is deposited in the collection component.

[0007] In some solutions, a portion of the annular chamber near the top of the bearing cartridge is in communication with the lubrication chamber to allow the lubricating oil to flow back.

[0008] In some solutions, a radial dimension of a portion of the annular chamber near the top of the bearing cartridge is intermittently reduced, and at least a portion of the annular chamber is in communication with the lubrication chamber.

[0009] In some solutions, the reducer bearing box structure further includes an annular plate, the annular chamber penetrates the bearing box inwardly along the radial direction of the bearing box, and the annular plate is disposed in the annular chamber; The annular plate has a screen corresponding to the annular chamber, so that the annular chamber communicates with the lubrication chamber.

[0010] In some embodiments, the inner wall of the bearing box corresponding to the annular chamber is provided with a protruding structure; and / or, the screen protrudes toward the annular chamber; And / or, the outer wall of the bearing box is further provided with a mud discharge port communicating with the annular chamber, and the mud discharge port is used to connect to the negative pressure device through a pipeline; And / or, the bearing box is further provided with an oil return chamber, a first labyrinth seal structure for connecting to the shaft is provided between the oil return chamber and the lubrication chamber; the bearing box is further provided with an oil return port communicating with the outside and the oil return chamber.

[0011] In some embodiments, the protruding structure has a first curved surface and a second curved surface, the first curved surface is inclined toward the lubrication chamber from an end away from the second curved surface to an end close to the second curved surface, and the second curved surface is inclined toward the lubrication chamber from an end away from the first curved surface to an end close to the second curved surface; And / or, the screen has a third curved surface and a fourth curved surface, the third curved surface is inclined toward the annular chamber from an end away from the fourth curved surface to an end close to the fourth curved surface, and the fourth curved surface is inclined toward the annular chamber from an end away from the third curved surface to an end close to the third curved surface; And / or, the bearing box is further provided with a sealing chamber, in which a sealing ring is provided; and a second labyrinth sealing structure for connecting with the shaft is provided between the sealing ring and the oil return chamber.

[0012] In some embodiments, the collection assembly includes two mounting plates and a plurality of partitions, the two mounting plates are arranged facing each other, and the partitions are arranged between the two mounting plates; The partition comprises a middle portion and a moving portion, the middle portion is connected to the two mounting plates, and the middle portion and the moving portion are connected in a radial sliding manner along the lubrication chamber through a first elastic member.

[0013] In some embodiments, the driving assembly includes a connecting portion and a stop portion, the stop portion being slidably connected along the radial direction of the lubrication chamber via a second elastic member, and the stop portion being configured to contact the mounting plate to drive the collection assembly to rotate; And / or, the collecting assembly and / or the driving assembly is provided with bristles, and as the bearing rotates, the bristles come into intermittent contact with the screen.

[0014] In a second aspect, the present application further discloses a reducer, comprising a housing and the reducer bearing box structure of the first aspect; The reducer bearing box structure is arranged on the casing.

[0015] In a third aspect, the present application further discloses an oil pumping unit, comprising a motor, an oil pumping unit body, and the reducer in the second aspect; The motor is connected to the oil pumping unit through a reducer.

[0016] The technical solution adopted by the present invention can achieve the following beneficial effects: In the reducer bearing box structure of the present application, lubricating oil is added to the lubrication chamber through the oil inlet to lubricate the bearings in the bearing box. After the lubricating oil has been used for a period of time or for an extended period of time, it will carry sludge into the lubrication chamber. Due to the presence of the sedimentation tank, the sludge will settle into the collection assembly under the action of gravity. As the bearing rotates, the drive assembly intermittently contacts the collection assembly to drive the collection assembly to rotate, thereby removing the sludge that has settled in the collection assembly and preventing it from accumulating in the bearing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 is an axonometric view of a reducer bearing box structure disclosed in some embodiments of the present application; Figure 2 is a side view of a reducer bearing box structure disclosed in some embodiments of the present application; Figure 3 yes Figure 2 Cross-sectional view of the middle FF surface; Figure 4 yes Figure 2 Cross-section of the middle GG plane Figure 1 ; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 yes Figure 2 Cross-section of the middle GG plane Figure 2 ; Figure 7 yes Figure 6 Enlarged view of point B in the middle; Figure 8 yes Figure 2 Cross-section of the middle GG plane Figure 3 ; Figure 9 yes Figure 8 Enlarged view of point C in the middle; Figure 10 is an axonometric view of a collection assembly disclosed in some embodiments of the present application; Figure 11 yes Figure 10Enlarged view of point D in the middle; Figure 12 This is a schematic diagram of the structure of the partition disclosed in some embodiments of this application Figure 1 ; Figure 13 This is a schematic diagram of the structure of the partition disclosed in some embodiments of this application Figure 2 ; Figure 14 is an axonometric view of an annular plate disclosed in some embodiments of the present application; Figure 15 is an axonometric view of a bearing and drive assembly disclosed in some embodiments of the present application; Figure 16 yes Figure 15 Enlarged view of point E in the middle; Figure 17 is an axonometric diagram of a reducer disclosed in some embodiments of the present application; Figure 18 It is an axonometric view of the oil pumping unit disclosed in some embodiments of the present application.

[0019] In the picture: 100- reducer bearing box structure, 110- bearing box, 111- lubrication chamber, 112- annular chamber, 113- oil inlet, 114- mud discharge port, 115- oil return chamber, 1151- oil return port, 116- sealing chamber, 117- raised structure, 1171- first arcuate surface, 1172- second arcuate surface, 118- first labyrinth seal structure, 119- second labyrinth seal structure, 120- bearing, 121- inner ring, 130- collecting assembly, 131- mounting plate, 132- partition, 1321- middle portion, 1322- moving portion, 140- driving assembly, 141- connecting portion, 142- stop portion, 150- annular plate, 151- screen, 1511- third arcuate surface, 1512- fourth arcuate surface, 152- notch, 160- sealing ring; 200-reducer, 210-housing, 220-shaft; 300- pumping unit, 310- pumping unit body, 311- bracket, 312- walking beam, 313- donkey head, 314- connecting rod assembly, 320- motor. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0021] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0022] Lubricating oil can produce sludge due to high-temperature oxidation, impurity contamination, and other factors. The oil scooping mechanism installed in the reducer can easily carry some sludge into the bearing box while adding lubricating oil from the bottom of the reducer housing, causing sludge to accumulate in the bearing box. During long-term lubrication, more and more sludge is mixed with the lubricating oil, causing more sludge to enter the bearing box, thus affecting the smoothness of the bearing.

[0023] The following is combined with Figures 1 to 18 , a reducer bearing box structure 100, a reducer 200 and an oil pumping unit 300 provided in this application are described in detail through specific embodiments and their application scenarios.

[0024] Some embodiments of the present application disclose a reducer bearing box structure 100 , including a bearing 120 , a bearing box 110 , a collecting assembly 130 , a driving assembly 140 and an annular plate 150 .

[0025] like Figure 1 、 Figure 2 and Figure 3 As shown, bearing 120 is disposed within bearing housing 110 and forms a lubrication chamber 111 with bearing housing 110. Lubrication chamber 111 can temporarily store some lubricating oil so that the lubricating oil can lubricate bearing 120 within bearing housing 110. Furthermore, the presence of lubrication chamber 111 ensures that a sufficient amount of lubricating oil is available to lubricate bearing 120, thereby ensuring a lubricating effect on bearing 120.

[0026] In this embodiment, the bearing 120 is used to connect with the shaft 220 of the reducer 200 .

[0027] like Figure 3As shown, bearing housing 110 has an oil inlet 113 that connects the outside world to lubrication chamber 111. External lubricating oil enters lubrication chamber 111 through oil inlet 113 to lubricate bearing 120 within bearing housing 110. Providing oil inlet 113 creates an open space within bearing housing 110, facilitating replenishment of lubricating oil within lubrication chamber 111 and ensuring lubrication of bearing 120.

[0028] It should be noted that the end of the bearing box 110 is in communication with the outside so that the lubricating oil after lubricating the bearing 120 can be discharged to the outside of the bearing box 110 .

[0029] In this embodiment, the bearing box 110 is installed in the housing 210 of the reducer 200 , and the lubricating oil after lubricating the bearing 120 is finally discharged into the oil pool inside the housing 210 for storage.

[0030] like Figure 3-Figure 9 As shown, bearing housing 110 is provided with an annular chamber 112, and a collection assembly 130 is rotatably mounted within annular chamber 112. Furthermore, a settling trough is provided at the inner bottom of bearing housing 110, corresponding to lubrication chamber 111, communicating with annular chamber 112 to allow sludge to settle within collection assembly 130. Sludge naturally settles under the influence of gravity, and the presence of the settling trough guides the sludge to settle on collection assembly 130 within annular chamber 112. Furthermore, as collection assembly 130 rotates, different positions within collection assembly 130 communicate with the settling trough, allowing collection assembly 130 to store more sludge and preventing sludge accumulation within lubrication chamber 111.

[0031] like Figure 3 and Figure 15 As shown, drive assembly 140 is mounted on bearing 120. As bearing 120 rotates, drive assembly 140 intermittently contacts collection assembly 130, driving collection assembly 130 to rotate. By mounting drive assembly 140 directly on bearing 120 and employing intermittent contact to drive collection assembly 130, the inherent rotation of bearing 120 is utilized as a power source, eliminating the need for additional energy input. Furthermore, the intermittent contact between drive assembly 140 and collection assembly 130 allows for intermittent rotation of collection assembly 130, minimizing wear on collection assembly 130 while allowing it sufficient time to collect deposited sludge.

[0032] like Figure 4 、 Figure 6 and Figure 8As 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 the lubricating oil to flow back. Due to the presence of the sedimentation tank, some of the lubricating oil in the lubrication chamber 111 will also enter the collection assembly 130 and be stored in the annular chamber 112 as the collection assembly 130 rotates. Therefore, through the connection between the annular chamber 112 near the top of the bearing housing 110 and 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 sufficient lubricating oil in the lubrication chamber 111 to participate in the lubrication of the bearing 120.

[0033] like Figure 4 、 Figure 6 and Figure 8 As shown, the radial dimension of the annular chamber 112 partially near the top of the bearing box 110 is intermittently reduced, and at least part of the annular chamber 112 is connected to the lubrication chamber 111. Preferably, the annular chamber 112 with a smaller radial dimension is connected to the lubrication chamber 111. The radial dimension of the annular chamber 112 partially near the top of the bearing box 110 is intermittently reduced, forming a periodic contraction channel; when the collection assembly 130 rotates, the sludge attached to its surface is mechanically peeled 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 flowing through the contraction section to form a low-pressure area, which accelerates the flow of clean lubricating oil to the connecting port; and, the annular chamber 112 with a smaller radial dimension is connected to the lubrication chamber 111, and the lubricating oil with sludge separated from the top of the annular chamber 112 is efficiently guided back to the lubrication chamber 111 by the synergistic effect of gravity and fluid dynamics, thereby achieving the simultaneous enhancement of sludge cleaning and lubricating oil circulation.

[0034] like Figure 4 、 Figure 6 、 Figure 8 and Figure 14 As shown, annular chamber 112 extends radially inward through bearing housing 110, and annular plate 150 is disposed within annular chamber 112. The annular chamber 112 extending radially inward through bearing housing 110 facilitates machining of annular chamber 112 within bearing housing 110, and annular plate 150, as an independent component, can be machined separately, thereby reducing overall machining difficulty. Furthermore, the placement of annular plate 150 within annular chamber 112 separates annular chamber 112 from lubrication chamber 111, thereby preventing sludge carried by collection assembly 130 from falling back into lubrication chamber 111.

[0035] like Figure 5 、 Figure 7 and Figure 9As shown, the annular plate 150 has a screen 151 corresponding to the annular chamber 112 to connect the annular chamber 112 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 set in the area of ​​the annular plate 150 corresponding to the radial contraction section, and intercepts the fine sludge particles stripped by the collection component 130 through physical filtration, while allowing clean lubricating oil to efficiently return to the lubrication chamber 111. The screen 151 not only maintains the necessary connection between the annular chamber 112 and the lubrication chamber 111 to achieve lubricating oil circulation, but also blocks the path for sludge to re-enter the lubrication chamber 111 with the returning lubricating oil, thereby improving the long-term stability of the lubrication cleanliness of the bearing 120.

[0036] It should be noted that the screen 151 cannot completely block 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 is used for a long time, it can still ensure that less sludge accumulates in the lubrication chamber 111.

[0037] In this embodiment, if Figure 14 As shown, the annular plate 150 has a notch 152 , which is a sedimentation groove, so that the lubrication chamber 111 and the annular chamber 112 are in communication.

[0038] like Figure 4-Figure 9 As shown, the inner wall of the annular chamber 112 of the bearing box 110 is provided with a protruding structure 117, 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 box 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 portion of the protruding structure 117 and / or the screen 151 forms a dynamically changing gap space therewith, periodically squeezing the sludge attached to the surface of the collecting assembly 130 to achieve mechanical stripping. At the same time, the regular sudden changes in the cross-sectional area of ​​the chamber excite local high-speed eddies in the flow field, which not only flush the screen 151 to prevent blockage, but also accelerate the separation and sedimentation of the sludge and lubricating oil.

[0039] In some embodiments, as Figure 4 and Figure 5 As shown, a protruding structure 117 is provided on the inner wall of the bearing box 110 corresponding to the annular chamber 112 .

[0040] In some embodiments, as Figure 8 and Figure 9 As shown, the screen 151 protrudes toward the annular chamber 112 .

[0041] In some embodiments, as Figure 6 and Figure 7As shown, the inner wall of the annular chamber 112 of the bearing box 110 is provided with a protruding structure 117 , and the inner wall of the annular chamber 112 of the bearing box 110 is provided with a protruding structure 117 .

[0042] In the embodiment with the raised structure 117, as shown in FIG. Figure 5 and Figure 7 As shown, protrusion structure 117 has a first curved surface 1171 and a second curved surface 1172. First curved surface 1171 slopes from an end away from second curved surface 1172 to an end closer to second curved surface 1172, toward lubrication chamber 111. Second curved surface 1172 slopes from an end away from first curved surface 1171 to an end closer to second curved surface 1172, toward lubrication chamber 111. First curved surface 1171 and second curved surface 1172 form an intermittently contracting structure. Through periodic compression and release, alternating mechanical stress is applied to sludge as collection assembly 130 rotates, facilitating separation of sludge and lubricating oil.

[0043] In the embodiment where the screen 151 protrudes toward the annular chamber 112, as shown in FIG. Figure 7 and Figure 9 As shown, the screen 151 has a third curved surface 1511 and a fourth curved surface 1512. The third curved surface 1511 slopes from an end away from the fourth curved surface 1512 to an end closer to the fourth curved surface 1512, toward the annular chamber 112. The fourth curved surface 1512 slopes from an end away from the third curved surface 1511 to an end closer to the third curved surface 1511, toward the annular chamber 112. The third curved surface 1511 and the fourth curved surface 1512 form an intermittently contracting structure. Through periodic compression and release, they apply alternating mechanical stress to the sludge when the collection assembly 130 rotates, thereby facilitating the separation of the sludge and lubricating oil.

[0044] like Figure 1 and Figure 3 As shown, the outer wall of bearing housing 110 is also provided with a mud discharge port 114 that communicates with annular chamber 112. Mud discharge port 114 is connected to a negative pressure device via a pipeline. The negative pressure device (gear pump) creates a continuous low-pressure environment at mud discharge port 114. Sludge within collection assembly 130, which rotates to mud discharge port 114, is suctioned and discharged in a targeted manner driven by a pressure differential. This removes the sludge and cleans the lubricant, preventing excess sludge from long-term use. Furthermore, the sludge cleaning process eliminates the need for machine downtime, increasing work efficiency.

[0045] In this embodiment, a protruding structure 117 is provided on both sides of the mud discharge port 114 and / or the screen 151 protrudes toward the annular chamber 112, so that the sludge and lubricating oil in the collecting component 130 can be squeezed before the shaft 220 passes through the mud discharge port 114 during forward or reverse rotation, thereby reducing the amount of lubricating oil remaining in the collecting component 130 when the collecting component 130 moves to the mud discharge port 114 position.

[0046] It should be noted that the negative pressure equipment is activated intermittently to extract the sludge. It should also be noted that the interval between activations can be adjusted based on the age of the lubricant. When the lubricant is recently in use, it produces less sludge, so the interval between activations can be longer. When the lubricant is long in use, it produces more sludge, so the interval between activations can be shortened.

[0047] like Figure 3 As shown, the bearing housing 110 is further provided with an oil return chamber 115. A first labyrinth seal structure 118 for connection to 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 from leaking out. However, as the shaft 220 rotates, some lubricating oil will pass through the first labyrinth seal structure 118 and gather into oil droplets. The oil return chamber 115 acts as a sealed buffer zone, storing lubricating oil that passes through the first seal structure and enters the oil return chamber 115, eliminating the risk of oil leakage from the end of the shaft 220.

[0048] like Figure 3 As shown, the bearing housing 110 is further provided with an oil return port 1151 that communicates with the outside world and the oil return chamber 115. Since the bearing housing 110 is directly mounted on the housing 210 of the reducer 200, by providing the oil return port 1151 on the bearing housing 110 that communicates with the outside world and the oil return chamber 115, lubricating oil entering the oil return chamber 115 is discharged into the oil sump of the housing 210 through the oil return port 1151 under the action of gravity, maintaining the dynamic balance of the system oil volume, significantly improving sealing reliability, and eliminating additional maintenance.

[0049] like Figure 3 As shown, bearing housing 110 further includes a sealed chamber 116, within which a sealing ring 160 is located. A second labyrinth seal 119 for connection to shaft 220 is located between sealing ring 160 and oil return chamber 115. Second labyrinth seal 119 and sealing ring 160 seal bearing housing 110, further eliminating the risk of oil leakage from the end of shaft 220.

[0050] like Figure 3 and Figure 10As shown, the collection assembly 130 includes two mounting plates 131 and a plurality of 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, sludge is deposited in each independent space and 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, thereby moving the deposited sludge.

[0051] like Figure 11-13 As shown, the partition 132 includes a middle portion 1321 and a movable portion 1322. The middle portion 1321 is connected to the two mounting plates 131. The middle portion 1321 and the movable portion 1322 are connected by a first elastic member in a radially sliding manner along the lubrication chamber 111. When the movable portion 1322 contacts the protruding portion of the protruding structure 117 and / or the screen 151, the movable portion 1322 can adaptively move to avoid motion interference with the protruding portion of the protruding structure 117 and / or the screen 151. In addition, the presence of the first elastic member ensures that the end face of the movable portion 1322 is in close contact with the protruding portion of the protruding structure 117 and / or the screen 151, so that the movable portion 1322 can drive the sludge to move.

[0052] Moreover, due to the existence of the first curved surface 1171 , the second curved surface 1172 and / or the third curved surface 1511 and the fourth curved surface 1512 , the moving portion 1322 moves more smoothly when it contacts the protruding portion of the protruding structure 117 and / or the screen 151 .

[0053] In this embodiment, the first elastic member is preferably a spring.

[0054] In the embodiment where only the protruding structure 117 is provided, Figure 11 As shown, there is one movable portion 1322 , which is disposed corresponding to the protruding structure 117 .

[0055] In the embodiment where only the screen 151 has protruding portions, as shown in FIG. Figure 12 As shown, there is one movable portion 1322 , which is arranged corresponding to the protruding portion of the screen 151 .

[0056] In the embodiment where the raised structure 117 and the screen 151 have protruding parts, as shown in FIG. Figure 13 As shown, two moving parts 1322 are provided, corresponding to the protruding parts of the protruding structure 117 and the screen 151 respectively.

[0057] like Figure 15 and Figure 16As shown, the drive assembly 140 includes a connecting portion 141 and a stop portion 142. The stop portion 142 is connected to the radial direction of the lubrication chamber 111 by a second elastic member and 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, thereby using friction to drive the collection assembly 130 to rotate intermittently.

[0058] As a preferred embodiment of the present invention, the contact portions between the stop portion 142 and the mounting plate 131 are respectively provided with teeth that mesh with each other, so that the stop portion 142 can drive the collecting assembly 130 to rotate.

[0059] In this embodiment, the end of the connecting portion 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 to 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 portion 141 to rotate.

[0060] In this embodiment, the second elastic member is preferably a spring.

[0061] The collection assembly 130 and / or the drive assembly 140 are provided with bristles, which intermittently contact the screen 151 as the bearing 120 rotates. By providing the bristles on the collection assembly 130 and / or the drive assembly 140, the rotation of the collection assembly 130 and / or the drive assembly 140 causes the bristles to sweep the surface of the screen 151, thereby preventing sludge from clogging the screen 151.

[0062] In some embodiments, the bristles are disposed on the moving portion 1322 or the middle portion 1321 of the collecting component 130 .

[0063] In some embodiments, the bristles are disposed on the stop portion 142 of the driving assembly 140 .

[0064] In some embodiments, the bristles are disposed on the stop portion 142 of the driving component 140 and the moving portion 1322 or the middle portion 1321 of the collecting component 130 .

[0065] Some embodiments of the present application also disclose a reducer 200, such as Figure 17 As shown, it includes a housing 210 and a reducer bearing box structure 100 , and the reducer bearing box structure 100 is arranged in the housing 210 .

[0066] Some embodiments of the present application also disclose an oil pumping unit 300, such as Figure 18As shown, it includes a motor 320 , a pumping unit 300 body and a reducer 200 , and the motor 320 is connected to the pumping unit 300 body through the reducer 200 .

[0067] Specifically, the main body of the pumping unit 300 includes a walking beam 312, a connecting rod assembly 314, a pumping head 313, and a bracket 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 portion of the walking beam 312 is rotatably connected to the bracket 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.

[0068] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A reducer bearing box structure, characterized in that: include: a bearing disposed in the bearing box and forming a lubrication chamber with the bearing box; The bearing box has an oil inlet communicating with the outside and the lubrication chamber; the bearing box is also provided with an annular chamber; a collecting assembly, rotatably disposed in the annular chamber; a driving assembly disposed on the bearing; as the bearing rotates, the driving assembly intermittently contacts the collecting assembly to drive the collecting assembly to rotate; Wherein, the inner bottom of the bearing box corresponding to the lubrication chamber is provided with a sedimentation tank connected to the annular chamber, so that the sludge is deposited in the collection component.

2. A reducer bearing box structure according to claim 1, characterized in that: A portion of the annular chamber near the top of the bearing box is communicated with the lubrication chamber to allow the lubricating oil to flow back.

3. A reducer bearing box structure according to claim 2, characterized in that: The radial size of a portion of the annular chamber close to the top of the bearing box is intermittently reduced, and at least a portion of the annular chamber is communicated with the lubrication chamber.

4. A reducer bearing box structure according to claim 3, characterized in that: The reducer bearing box structure further includes an annular plate, the annular chamber penetrates the bearing box inwardly along the radial direction of the bearing box, and the annular plate is arranged in the annular chamber; The annular plate has a screen corresponding to the annular chamber, so that the annular chamber communicates with the lubrication chamber.

5. A reducer bearing box structure according to claim 4, characterized in that: The bearing box is provided with a protruding structure on the inner wall corresponding to the annular chamber; and / or, the screen protrudes toward the annular chamber; And / or, the outer wall of the bearing box is further provided with a mud discharge port communicating with the annular chamber, and the mud discharge port is used to be connected to a negative pressure device through a pipeline; And / or, the bearing box is further provided with an oil return chamber, a first labyrinth sealing structure for connecting to the shaft is provided between the oil return chamber and the lubrication chamber; the bearing box is further provided with an oil return port connecting the outside and the oil return chamber.

6. A reducer bearing box structure according to claim 5, characterized in that: The protruding structure has a first arcuate surface and a second arcuate surface, wherein the first arcuate surface is inclined from an end away from the second arcuate surface to an end close to the second arcuate surface toward the lubrication chamber, and the second arcuate surface is inclined from an end away from the first arcuate surface to an end close to the second arcuate surface toward the lubrication chamber; And / or, the screen has a third curved surface and a fourth curved surface, the third curved surface is inclined from an end away from the fourth curved surface to an end close to the fourth curved surface toward the annular chamber, and the fourth curved surface is inclined from an end away from the third curved surface to an end close to the third curved surface toward the annular chamber; And / or, the bearing box is further provided with a sealing chamber, in which a sealing ring is provided; and a second labyrinth sealing structure for connecting with a shaft is provided between the sealing ring and the oil return chamber.

7. The reducer bearing box structure according to claim 5, characterized in that: The collecting assembly includes two mounting plates and a plurality of partitions, the two mounting plates are arranged facing each other, and the partitions are arranged between the two mounting plates; The partition includes a middle portion and a moving portion, the middle portion is connected to the two mounting plates, and the middle portion and the moving portion are slidably connected along the radial direction of the lubrication chamber via a first elastic member.

8. The reducer bearing box structure according to claim 7, characterized in that: The driving assembly includes a connecting portion and a stop portion, wherein the stop portion is slidably connected along the radial direction of the lubrication chamber via a second elastic member, and the stop portion is used to contact the mounting plate to drive the collection assembly to rotate; And / or, the collecting assembly and / or the driving assembly is provided with bristles, and as the bearing rotates, the bristles come into intermittent contact with the screen.

9. A reducer, characterized in that: It comprises a housing and a reducer bearing box structure according to any one of claims 1 to 8; The reducer bearing box structure is arranged on the casing.

10. A pumping unit, characterized in that: It comprises a motor, an oil pumping unit body and the reducer according to claim 9; The motor is connected to the oil pumping unit body through the reducer.

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