Anti-stuck tower type speed reduction drum bearing for pumping oil

Abstract

The utility model relates to tower type pumping unit technical field provides a kind of anti-jamming tower type pumping reduction gearbox bearing, including left support seat and left cover, the inside of left support seat is penetrated with left support shaft, and the one end of left support shaft is fixed with support structure.The utility model is provided with protection structure, the drum body linear thermal expansion will drive the left movement of the self-aligning roller bearing, since the inner ring cooperation is transition fit, so the inner ring can be moved without jamming, the outer ring is interference fit, keeps the state of relative fixation with the drum body, can be automatically adjusted after moving, without the phenomenon of different concentric jamming, through the clearance of 1.5mm of the left and right axial of the inner ring of self-aligning roller bearing, under the action of the clearance of 1.5mm, ensure that it will not be jammed due to linear thermal expansion, realize the function that the device is convenient to prevent jamming, thereby improve the applicability of the tower type pumping reduction gearbox bearing when using.

Description

Technical Field

[0001] This utility model relates to the technical field of tower-type pumping units, and in particular to a deceleration drum bearing for tower-type pumping units that prevents jamming. Background Technology

[0002] The oil pump is the most important lifting equipment in a rod pumping system. With the increasing demand for crude oil, there are further requirements for the ability to deeply extract oil fields. Traditional beam pumping units are limited by the pitch angle of the four-bar linkage, and the maximum stroke is no more than 10 meters. The number of strokes depends on changing the pulleys of different diameters to adjust the speed of the gearbox. Not only is it very troublesome to change the working state, but it is also impossible to achieve stepless speed regulation according to the actual needs of the oil well. In order to adapt to the current development of the petroleum industry, a type of anti-jamming tower-type pumping reduction roller bearing is used. Traditional oil pumping reduction roller bearings suffer from insufficient protection during use. In Northeast China, where outdoor temperatures range from -40℃ to 50℃, the large temperature difference means the roller body, being a moving part and an oil container, experiences a temperature rise. Meanwhile, other peripheral components, not in direct contact with the oil and stationary, remain at the same temperature as the environment. This results in a significant temperature difference between the two components. The roller, being hotter, expands axially, causing it to lengthen. Due to the lack of clearance, this can easily lead to bearing jamming, making the bearing unsuitable for use. Utility Model Content

[0003] The purpose of this invention is to provide a tower-type oil pumping deceleration drum bearing that prevents jamming, thereby addressing the shortcomings of existing tower-type oil pumping deceleration drum bearings with insufficient protective measures.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a tower-type oil pumping deceleration drum bearing for preventing jamming, including a left support seat and a left cover; A left support shaft runs through the interior of the left support seat. A support structure is fixed to one end of the left support shaft, and a lubrication structure is provided on the inner side of one end of the left support shaft. A roller body is provided on the outside of the support structure. A left cover is fixed to one end of the roller body, and a right cover is fixed to the other end of the roller body. A right support seat is provided on the outside of the right cover. A protective structure is provided on the outer side of the left support shaft. The protective structure includes a self-aligning roller bearing located on the outer side of the left support shaft. An oil seal bushing is provided at one end of the self-aligning roller bearing. A bearing cover is fitted on the outer side of the oil seal bushing. A second oil injection hole is evenly provided inside the bearing cover.

[0005] When using this device, the protective structure facilitates anti-jamming, thereby improving the applicability of the tower-type oil pumping reduction drum bearing; the support structure facilitates support, thereby improving the stability of the tower-type oil pumping reduction drum bearing during use; and the lubrication structure facilitates lubrication, thereby improving the convenience of use.

[0006] Preferably, the support structure includes a gear ring, an end cap, and fixing bolts. The gear ring is fixed to one end of the left support shaft, and an end cap is provided on one side of the gear ring. Fixing bolts are evenly inserted through the interior of the end cap. Under the action of the gear ring, mechanical support is provided for the roller body, ensuring that the roller body remains stable when rotating at high speed. Its precise positioning function can prevent the roller body from being unbalanced due to vibration or impact, thereby avoiding jamming.

[0007] Preferably, the end cap and the gear ring are fixedly connected by fixing bolts, and a cylindrical pin penetrates the interior of the end cap on one side of the fixing bolt. Under the action of the fixing bolt, sufficient fastening force is ensured while also withstanding higher shear force. Under the action of the cylindrical pin, it can both increase the shear resistance and act as a positioning pin, which can effectively prevent the risk of fixing bolt breakage and reduce safety hazards.

[0008] Preferably, the lubrication structure includes a support bearing, a first oil injection hole, and bolt holes. The support bearing is located inside the left support shaft. The first oil injection hole is evenly distributed on one side of the top of the support bearing, and bolt holes are evenly distributed through the interior of one end of the support bearing. The bolt holes facilitate the installation and fixation of the support bearing, while the first oil injection hole facilitates oil injection, reduces direct metal-to-metal contact, and lowers wear and frictional heat.

[0009] Preferably, the bolt holes are evenly spaced inside the support bearing. Under the action of the support bearing, the left support shaft rotates through rolling friction, reducing frictional resistance, ensuring stable rotation of the left support shaft, and preventing jamming due to shaking of the left support shaft.

[0010] Preferably, the outer ring of the self-aligning roller bearing is interference-fitted with the inner side of the left cover. After the roller body undergoes linear thermal expansion, it will drive the self-aligning roller bearing to move to the left. Since the inner ring is a transition fit, it can move without jamming. The outer ring is interference-fitted, maintaining a relatively fixed state with the roller body. After movement, it can automatically adjust without causing misalignment or jamming.

[0011] Preferably, the inner ring of the self-aligning roller bearing and the outer side of the left support shaft adopt an transition fit. Since the roller body rotates, the self-aligning roller bearing mainly bears radial force and almost no axial force. By leaving a 1.5mm gap on each side of the inner ring of the self-aligning roller bearing, the machine is prevented from seizing due to linear thermal expansion, eliminating safety hazards, improving operating conditions, and increasing the service life of the entire machine.

[0012] The present invention provides a tower-type oil pumping reduction drum bearing that prevents jamming, the advantages of which are: With a protective structure, the linear thermal expansion of the drum body will cause the self-aligning roller bearing to move to the left. Since the inner ring is a transition fit, it can move without jamming. The outer ring is an interference fit, maintaining a relatively fixed state with the drum body. After movement, it can automatically adjust and will not jam due to misalignment. Since the drum body rotates, the self-aligning roller bearing mainly bears radial force and almost no axial force. The 1.5mm gap on each side of the inner ring of the self-aligning roller bearing ensures that it will not jam due to linear thermal expansion, eliminating safety hazards, improving the working environment, increasing the service life of the whole machine, and realizing the anti-jamming function of the device, thereby improving the applicability of the tower-type oil pumping reduction drum bearing in use. With a supporting structure, the gear ring provides mechanical support for the drum body, ensuring its stability during high-speed rotation. Its precise positioning function prevents the drum body from being overloaded due to vibration or impact, thus avoiding jamming. The fixing bolts ensure sufficient tightening force while also withstanding higher shear forces. The cylindrical pins not only increase shear resistance but also act as positioning pins, effectively preventing the risk of fixing bolt breakage and reducing safety hazards. This device facilitates support and improves the stability of the tower-type pumping deceleration drum bearing in use. With a lubrication structure, the support bearing is easily installed and fixed through the bolt holes. The first oil injection hole facilitates oil injection, reducing direct metal-to-metal contact, wear, and frictional heat. Under the action of the support bearing, the left support shaft rotates through rolling friction, reducing frictional resistance and ensuring stable rotation of the left support shaft. This prevents jamming caused by the left support shaft shaking, thus realizing the function of easy lubrication of the device and improving the convenience of using the tower-type oil pumping reduction drum bearing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 2 For the present utility model Figure 1Enlarged structural diagram at point A in the middle; Figure 3 This is a partial side view cross-sectional diagram of the protective structure of this utility model; Figure 4 This is a partial three-dimensional structural diagram of the protective structure of this utility model; Figure 5 This is a three-dimensional structural diagram of the lubrication structure of this utility model.

[0014] The reference numerals in the diagram are as follows: 1. Left support seat; 2. Left cover; 3. Left support shaft; 4. Roller body; 5. Support structure; 501. Gear ring; 502. End cover; 503. Fixing bolt; 6. Right cover; 7. Right support seat; 8. Lubrication structure; 801. Support bearing; 802. First oil injection hole; 803. Bolt hole; 9. Protective structure; 901. Self-aligning roller bearing; 902. Oil seal bushing; 903. Bearing cover; 904. Second oil injection hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 This utility model provides a tower-type deceleration drum bearing for oil pumping that prevents jamming. It includes a left support seat 1 and a left cover 2. A left support shaft 3 passes through the interior of the left support seat 1. A support structure 5 is fixed to one end of the left support shaft 3. The support structure 5 includes a gear ring 501, an end cover 502 and a fixing bolt 503. The gear ring 501 is fixed to one end of the left support shaft 3. An end cover 502 is provided on one side of the gear ring 501. Fixing bolts 503 are evenly passed through the interior of the end cover 502. The end cover 502 and the gear ring 501 are fixedly connected by fixing bolts 503. Cylindrical pins pass through the interior of the end cover 502 on one side of the fixing bolt 503.

[0017] Reference Figure 1 As shown, the gear ring 501 provides mechanical support for the roller body 4, ensuring that the roller body 4 remains stable when rotating at high speed. Its precise positioning function can prevent the roller body 4 from being overloaded due to vibration or impact, thereby avoiding jamming. Under the action of the fixing bolt 503, sufficient fastening force is ensured while also withstanding higher shear force. Under the action of the cylindrical pin, it can both increase the shear resistance and act as a positioning pin, effectively preventing the risk of the fixing bolt 503 breaking and reducing safety hazards.

[0018] A lubrication structure 8 is provided on the inner side of one end of the left support shaft 3. The lubrication structure 8 includes a support bearing 801, a first oil injection hole 802 and a bolt hole 803. The support bearing 801 is located on the inner side of the left support shaft 3. The first oil injection hole 802 is evenly provided on one side of the top of the support bearing 801. The bolt hole 803 is evenly distributed inside one end of the support bearing 801. The bolt holes 803 are evenly distributed inside the support bearing 801.

[0019] Reference Figure 1 and Figure 5 As shown, the support bearing 801 can be easily installed and fixed through the bolt hole 803. Under the action of the first oil injection hole 802, it is convenient to inject oil, reduce direct metal contact, reduce wear and frictional heat. Under the action of the support bearing 801, the left support shaft 3 is rotated by rolling friction, reducing frictional resistance, ensuring the stable rotation of the left support shaft 3, and avoiding jamming due to the shaking of the left support shaft 3.

[0020] A roller body 4 is provided on the outer side of the support structure 5. A left cover 2 is fixed to one end of the roller body 4, and a right cover 6 is fixed to the other end of the roller body 4. A right support seat 7 is provided on the outer side of the right cover 6. A protective structure 9 is provided on the outer side of the left support shaft 3. The protective structure 9 includes a self-aligning roller bearing 901 provided on the outer side of the left support shaft 3. An oil seal bushing 902 is provided on one end of the self-aligning roller bearing 901. A bearing cover 903 is sleeved on the outer side of the oil seal bushing 902. Second oil injection holes 904 are evenly arranged inside the bearing cover 903. The outer ring of the self-aligning roller bearing 901 is interference-fitted with the inner side of the left cover 2, and the inner ring of the self-aligning roller bearing 901 is transition-fitted with the outer side of the left support shaft 3.

[0021] Reference Figures 1-3 As shown, when installing the self-aligning roller bearing 901, install it to the stop of the left cover 2, then insert the oil seal bushing 902, and install the bearing cover 903 to press against the outer ring of the self-aligning roller bearing 901, so that the self-aligning roller bearing 901 maintains a relatively fixed position relative to the roller body 4. At this time, there is a 1.5mm gap on each side of the inner ring of the self-aligning roller bearing 901, which ensures that there is a gap to move after linear thermal expansion. With the action of the 1.5mm gap, it is ensured that it will not be jammed due to linear thermal expansion, eliminating safety hazards, improving the working conditions of the operating environment, and increasing the service life of the whole machine.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tower-type deceleration drum bearing for oil pumping that prevents jamming, comprising a left support seat (1) and a left cover (2). Its features are: The left support base (1) has a left support shaft (3) running through its interior. One end of the left support shaft (3) is fixed with a support structure (5), and a lubrication structure (8) is provided on the inner side of one end of the left support shaft (3). The outer side of the support structure (5) is provided with a roller body (4), one end of the roller body (4) is fixed with a left cover (2), the other end of the roller body (4) is fixed with a right cover (6), and the outer side of the right cover (6) is provided with a right support seat (7). A protective structure (9) is provided on the outer side of the left support shaft (3). The protective structure (9) includes a self-aligning roller bearing (901) provided on the outer side of the left support shaft (3). An oil seal bushing (902) is provided at one end of the self-aligning roller bearing (901). A bearing cover (903) is sleeved on the outer side of the oil seal bushing (902). A second oil injection hole (904) is uniformly provided inside the bearing cover (903).

2. The anti-jamming tower-type oil pumping reduction drum bearing according to claim 1, characterized in that: The support structure (5) includes a gear ring (501), an end cap (502) and fixing bolts (503). The gear ring (501) is fixed to one end of the left support shaft (3). An end cap (502) is provided on one side of the gear ring (501). Fixing bolts (503) are evenly inserted through the interior of the end cap (502).

3. The anti-jamming tower-type oil pumping reduction drum bearing according to claim 2, characterized in that: The end cap (502) and the gear ring (501) are fixedly connected by a fixing bolt (503), and a cylindrical pin passes through the interior of the end cap (502) on one side of the fixing bolt (503).

4. The anti-jamming tower-type oil pumping reduction drum bearing according to claim 1, characterized in that: The lubrication structure (8) includes a support bearing (801), a first oil injection hole (802) and a bolt hole (803). The support bearing (801) is located on the inner side of the left support shaft (3). The first oil injection hole (802) is uniformly provided on one side of the top of the support bearing (801). The bolt hole (803) is uniformly passed through the interior of one end of the support bearing (801).

5. A tower-type oil pumping unit with anti-jamming reduction drum bearing according to claim 4, characterized in that: The bolt holes (803) are evenly distributed inside the support bearing (801).

6. The anti-jamming tower-type oil pumping reduction drum bearing according to claim 1, characterized in that: The outer ring of the self-aligning roller bearing (901) is interference-fitted with the inner side of the left cover (2).

7. The anti-jamming tower-type oil pumping reduction drum bearing according to claim 1, characterized in that: The inner ring of the self-aligning roller bearing (901) and the outer side of the left support shaft (3) are fitted with a transition fit.

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