Guide wheel of belt type oil pumping unit

Abstract

The utility model discloses a guide wheel of a belt type pumping unit, which comprises a bearing, an outer ring, an inner ring and a fixing plate, and the bearing is arranged on the inner wall of the inner ring; a first clamping ring is arranged on the inner wall of the outer ring, a second clamping ring is arranged on the outer wall of the inner ring, the outer ring and the inner ring are spliced together through the first clamping ring and the second clamping ring, and a whole circular ring is formed after the first clamping ring and the second clamping ring are spliced; fixing plates are arranged at the two ends of the whole circular ring, the two fixing plates and the whole circular ring are fixed through locking pieces, and the outer ring and the inner ring are tightened. According to the guide wheel, the integral structure of the existing guide wheel is changed, the outer ring is firmly fixed, the problem of degumming damage is solved, and the service life can be effectively prolonged by 2-3 times.

Description

Technical Field

[0001] The utility model relates to the technical field of pumping units, and particularly relates to a guide wheel of a belt type pumping unit. Background Art

[0002] Four groups of guide wheels are arranged at the four corners of the balance box of the belt type pumping unit, with 3 guide wheels in each group, totaling 12 guide wheels. Their function is to straighten and guide the up and down movement of the balance box. A currently used guide wheel consists of a frame and a rubber layer. The frame is of cast iron structure, with bearings inside, and is installed on the guide wheel bracket through a pin shaft. The rubber layer is made of polyurethane.

[0003] In actual use, the polyurethane on the surface of the rubber layer of the guide wheel is prone to aging and the rubber layer peels off, resulting in damage. The average service life is only 3 years. Currently, the quantity of belt type pumping units in use is huge. The number of guide wheels replaced annually exceeds the quantity of pumping units in use, which not only increases the maintenance cost of the belt type pumping unit, but also reduces the working efficiency of the pumping unit and increases the workload.

[0004] Publication No.: CN205918406U discloses an anti-guide wheel eccentric wear type vertical chain pumping unit commutation device, which includes a balance box, a reciprocating frame, a commutation slider assembly, a left guide wheel assembly and a right lower adjustment wheel assembly. The reciprocating frame includes a slider horizontal movement frame and a balance box installation platform. Slide rails are respectively fixed at the top and bottom of the frame opening of the slider horizontal movement frame, and a commutation slider assembly is installed on the slide rails. The utility model has a reasonable and compact structure and is convenient to use. The reciprocating frame and the balance box are respectively lying on the frame guide rails on the inclined side through the upper guide support wheel assembly and the lower left guide support wheel assembly, sharing the force. At the same time, both the upper guide support wheel assembly and the lower left guide support wheel assembly adopt a double-wheel mechanism, which can automatically adjust and straighten, ensure the double-point support force of the upper guide support wheel assembly and the lower left guide support wheel assembly, improve the eccentric wear of the guide wheel, and improve the service performance of the vertical pumping unit with an inclined frame.

[0005] This prior art improves the service life of the guide wheel through anti-eccentric wear, and does not improve the service life by changing the structure of the guide wheel itself.

[0006] Publication No.: CN203285932U discloses a guide wheel drum for a pumping unit, which includes a cylinder body and an end cover. A cylinder body step is arranged on the periphery of the end cover, and the cylinder body is fixed on the cylinder body step. The end cover includes a large end cover and a small end cover. The small end cover is located outside the large end cover, and an installation hole for a bearing is arranged between the two. The large end cover and the small end cover are fixed together through a positioning pin. The cylinder body is an integrally cast cylinder body. The utility model has a simple structure, low cost, simple installation and high manufacturing efficiency.

[0007] This prior art improves the manufacturing efficiency of the guide wheel drum, and does not improve the service life by changing the structure of the guide wheel itself.

[0008] Publication number: CN218718159U discloses a direct suction type tower rack wear-resistant roller mechanism, including guide wheel frames arranged on both sides of the counterweight box of the tower rack pumping unit. A guide wheel group is arranged on the guide wheel frames, and the rolling surfaces of the guide wheel group are attached to the guide rods on the tower rack pumping unit. A number of lubricating bags are arranged on the guide wheel group. In this utility model, a number of accommodating grooves are evenly arranged on the rollers, and lubricating bags are arranged in the accommodating grooves. When the rollers rotate along the guide rods, the lubricating bags will be squeezed. At this time, the lubricating bags are damaged and the lubricating oil leaks out. As the rollers rotate, the lubricating oil will be evenly smeared on the side walls of the rollers and the guide rods, thereby better reducing the rigid friction between the two, and further improving the service life of the rollers, bringing great convenience to the pumping work.

[0009] This prior art improves the service life of the guide wheels by continuously lubricating the guide wheels, without improving the service life by changing the structure of the guide wheels themselves.

[0010] In short, the technical solutions, the technical problems to be solved and the beneficial effects generated by the above disclosed technologies are all different from those of this utility model. Regarding more technical features, technical problems to be solved and beneficial effects of this utility model, there is no technical inspiration in the above disclosed technical documents. Summary of the Utility Model

[0011] Aiming at the above-mentioned defects existing in the prior art, the purpose of this utility model is to provide a guide wheel for a belt type pumping unit to improve the service life of the guide wheel.

[0012] In order to achieve the above purpose, this utility model adopts the following technical solutions:

[0013] A guide wheel for a belt type pumping unit includes a bearing, and also includes an outer ring, an inner ring, and a fixing plate. The bearing is arranged on the inner wall of the inner ring; a first snap ring is arranged on the inner wall of the outer ring, and a second snap ring is arranged on the outer wall of the inner ring. The first snap ring and the second snap ring fit the outer ring and the inner ring together, and a complete circular ring is formed after the first snap ring and the second snap ring are fitted; fixing plates are arranged at both ends of the complete circular ring, and the two fixing plates are fixed to the complete circular ring through locking parts to clamp the outer ring and the inner ring.

[0014] Further, the fixing plate is a circular ring plate.

[0015] Further, radial bolt holes are arranged on the first snap ring or the second snap ring, and the two fixing plates are arranged at both ends of the radial bolt holes, and the two fixing plates are fixed through bolts to clamp the outer ring and the inner ring.

[0016] Further, the bolt is an internal hexagon socket head cap screw.

[0017] Further, a spring washer is provided on the bolt to prevent loosening.

[0018] Further, at least two evenly distributed flanges are provided on the first snap ring, and the second snap ring is at least two evenly distributed convex flanges;

[0019] Specifically, the number of the flanges is the same as that of the convex flanges and they correspond to each other one by one. After the flanges and the convex flanges are fitted together, the first snap ring and the second snap ring form an integral circular ring.

[0020] Further, the radial bolt hole is provided on the convex flange of the second snap ring.

[0021] In an embodiment of the present utility model, a bearing is provided inside the inner ring, and skeleton oil seals are provided at both ends of the bearing.

[0022] In a second embodiment of the present utility model, a positioning shoulder is provided inside the inner ring, two bearings are provided inside the inner ring, the two bearings are distributed at both ends of the shoulder, and skeleton oil seals are provided on the sides of the two bearings in contact with the outside.

[0023] Further, the bearing is a rolling bearing or a sliding bearing.

[0024] The present utility model has the following beneficial effects compared with the prior art:

[0025] The present utility model changes the current integral structure of the guide wheel, the outer ring is firmly fixed, overcomes the problem of degumming and damage, and can effectively extend the service life by 2-3 times. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of a guide wheel of a belt type pumping unit of the present utility model;

[0027] Figure 2 is a schematic structural diagram of the inner ring of a guide wheel of a belt type pumping unit of the present utility model;

[0028] Figure 3 is a schematic structural diagram of the outer ring of a guide wheel of a belt type pumping unit of the present utility model;

[0029] In the figure: 1 - outer ring; 1a - first snap ring; 2 - inner hexagon socket head bolt; 3 - spring washer; 4 - fixing plate; 5 - inner ring; 5a - positioning shoulder; 5b - second snap ring; 6 - bearing; 7 - skeleton oil seal. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] Please refer to Figures 1 to 3 , a guide wheel of a belt type pumping unit provided by the present invention includes an outer ring 1, an inner ring 5, and a fixing plate 4. A bearing 6 is provided on the inner wall of the inner ring 5. A first snap ring 1a is provided on the inner wall of the outer ring 1. A second snap ring 5b is provided on the outer wall of the inner ring 5. The first snap ring 1a and the second snap ring 5b fit the outer ring 1 and the inner ring 5 together. After the first snap ring 1a and the second snap ring 5b are fitted, they form a complete ring. Radial bolt holes are provided on the first snap ring 1a or the second snap ring 5b. Fixing plates 4 are provided at both ends of the radial bolt holes. The two fixing plates 4 are fixed by hexagon socket head cap screws 2 to clamp the outer ring 1 and the inner ring 5.

[0033] At least two evenly distributed recesses are provided on the first snap ring 1a. The second snap ring 5b is at least two evenly distributed flanges. The number of the recesses and the flanges is the same and they correspond one by one. After the recesses and the flanges are fitted, the first snap ring 1a and the second snap ring 5b form a complete ring.

[0034] A bearing 6 is provided inside the inner ring 5. Skeleton oil seals 7 are provided at both ends of the bearing 6.

[0035] Embodiment 2:

[0036] A guide wheel of a belt type pumping unit provided by this embodiment includes an outer ring 1, an inner ring 5, and a fixing plate 4. A bearing 6 is provided on the inner wall of the inner ring 5. A first snap ring 1a is provided on the inner wall of the outer ring 1. A second snap ring 5b is provided on the outer wall of the inner ring 5. The first snap ring 1a and the second snap ring 5b fit the outer ring 1 and the inner ring 5 together. After the first snap ring 1a and the second snap ring 5b are fitted, they form a complete ring.

[0037] At least two evenly distributed recesses are provided on the first snap ring 1a. The second snap ring 5b is at least two evenly distributed flanges. The number of the recesses and the flanges is the same and they correspond one by one. After the recesses and the flanges are fitted, the first snap ring 1a and the second snap ring 5b form a complete ring.

[0038] The radial bolt holes are provided on the flange of the second snap ring 5b. Fixed plates 4 are provided at both ends of the radial bolt holes. The two fixed plates 4 are fixed by hexagon socket head cap screws 2 to clamp the outer ring 1 and the inner ring 5.

[0039] The fixed plate 4 is an annular plate.

[0040] A positioning shoulder 5a is provided inside the inner ring 5. Two bearings 6 are provided on the inner ring 5. The two bearings 6 are distributed at both ends of the shoulder 5a. A skeleton oil seal 7 is provided on the side of each of the two bearings 6 in contact with the outside.

[0041] A spring washer 3 is provided on the hexagon socket head cap screw 2 to prevent loosening.

[0042] The bearing 6 is a rolling bearing or a sliding bearing.

[0043] Applying the guide wheel of a belt type pumping unit described in Embodiment 1 or Embodiment 2 to a belt type pumping unit, the outer ring 1 is made of traditional wear-resistant material polyurethane. Since the outer ring 1 is firmly fixed, the problem of debonding damage is overcome, and the service life can be effectively extended by 2 - 3 times.

[0044] For the parts themselves not elaborated in this application and the connection methods of the various parts in this application, they all belong to the well-known technologies in the technical field. They can be directly applied and will not be elaborated further.

[0045] In the present utility model, the term "a plurality of" means two or more, unless otherwise clearly defined. Terms such as "mounted", "connected", "connected to", "fixed" and the like shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0047] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] The foregoing is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A guide wheel of a belt-type oil pumping unit, comprising a bearing, characterized in that: It also includes an outer ring, an inner ring, and a fixed plate, wherein the bearing is arranged on the inner wall of the inner ring; The inner wall of the outer ring is provided with a first clamping ring, and the outer wall of the inner ring is provided with a second clamping ring. The first clamping ring and the second clamping ring splice the outer ring and the inner ring together, and the first clamping ring and the second clamping ring form a full circular ring after being spliced ​​together; Both ends of the full circular ring are provided with fixing plates, and the two fixing plates are fixed to the full circular ring by means of locking pieces to tighten the outer ring and the inner ring.

2. The guide wheel of a belt-type oil pumping unit according to claim 1, characterized in that: The fixing plate is a circular ring plate.

3. The guide wheel of a belt-type oil pumping unit according to claim 1, characterized in that: The first clamping ring or the second clamping ring is provided with radial bolt holes, and two fixing plates are provided at both ends of the radial bolt holes. The two fixing plates are fixed by bolts to tighten the outer ring and the inner ring.

4. The guide wheel of a belt-type oil pumping unit according to claim 3, characterized in that: The bolts are hexagon socket head bolts.

5. The guide wheel of a belt-type oil pumping unit according to claim 3, characterized in that: The bolt is provided with a spring washer to prevent loosening.

6. The guide wheel of a belt-type oil pumping unit according to claim 3, characterized in that: The first clamp ring is provided with at least two evenly distributed concave edges, and the second clamp ring is provided with at least two evenly distributed flanges; The number of the concave edges and the flanges is the same and they correspond one to one. After the concave edges and the flanges are assembled, the first clamping ring and the second clamping ring form a full circular ring.

7. The guide wheel of a belt-type oil pumping unit according to claim 6, characterized in that: The radial bolt holes are arranged on the flange of the second clamping ring.

8. The guide wheel of a belt-type oil pumping unit according to claim 1, characterized in that: A bearing is arranged inside the inner ring, and skeleton oil seals are arranged at both ends of the bearing.

9. The guide wheel of a belt-type oil pumping unit according to claim 1, characterized in that: A positioning shoulder is arranged inside the inner ring, and two bearings are arranged on the inner ring. The two bearings are distributed at both ends of the shoulder, and skeleton oil seals are arranged on the sides of the two bearings that are in contact with the outside.

10. The guide wheel of a belt-type oil pumping unit according to any one of claims 1 to 9, characterized in that: The bearing is a rolling bearing or a sliding bearing.

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