Underneath type oil pumping unit

Abstract

The utility model discloses an underneath type oil pumping unit, a maintenance mechanism further comprises a bottom plate, the two sides of the bottom plate are rotatably connected with first supporting wheels, one side of the top face of the bottom plate is fixedly installed with a motor, an output shaft of the motor is fixedly connected with a wind-up roller, the middle of the face, away from the motor, of the wind-up roller is rotatably connected with the bottom plate, and the bottom plate is fixedly connected with the bottom plate. The side, away from the motor, of the top face of the bottom plate is fixedly installed on a vertical plate, the upper end of the vertical plate extends in the vertical direction, a plurality of climbing rods are fixedly connected to the inner side of the vertical plate and arranged at equal intervals in the length direction of the vertical plate, and an upper limiting plate is fixedly installed at the top of the vertical plate; the top of the upper limiting plate is rotationally connected with a directional roller, the lifting plate can ascend and descend along a main frame of the oil pumping unit body, and therefore an operator can climb to the middle of the oil pumping unit conveniently for overhauling.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumping units, in particular to a bottom-mounted oil pumping unit. Background Art

[0002] The downhole pumping unit is a kind of equipment used for oil well exploitation. Its main feature is that the pump of the pumping unit is set underground, the downhole pump is driven by the ground power equipment, and the crude oil is lifted from the underground to the ground through the connecting rod system. This design can effectively reduce the footprint of the ground equipment and improve the efficiency of oil pumping. The downhole pumping unit is suitable for deep wells and oil wells with higher production, especially in environments with limited space or harsh climate.

[0003] A Chinese patent discloses a bottom-mounted oil pump (publication number: CN202360061U), which arranges the driving wheel, reducer, brake device, motor, and power part on the lower working platform. This utility model can not only reduce the weight of the upper platform of the main frame of the oil pump, reduce the load of the main frame of the oil pump, but also move the center of gravity of the whole machine downward, greatly improving the safety and reliability of the whole machine. It also greatly facilitates the work of the operator and the inspection and maintenance of the maintenance personnel, but the device still has the following problems:

[0004] Although the power part of the above device is distributed below the device, which is convenient for maintenance personnel to inspect, it is not convenient to inspect other parts of the mounted oil pump. The counterweight box is usually installed on the crank or balance arm of the oil pump, which are generally located in the middle or upper part of the equipment. Utility Model Content

[0005] The technical problems to be solved by the utility model are as follows: the counterweight box is usually installed on the crank or balance arm of the oil pump, which are generally located at the upper part of the equipment, and the middle or upper parts of the oil pump are not convenient for maintenance.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A bottom-mounted oil pumping unit comprises an oil pumping unit body, an inspection mechanism is arranged on the outside of the oil pumping unit body, and the inspection mechanism comprises a supporting wheel 1;

[0008] Also includes:

[0009] The inspection mechanism also includes a bottom plate, two sides of the bottom plate are rotatably connected with support wheels, one side of the top surface of the bottom plate is fixedly installed with a motor, the output shaft of the motor is fixedly connected with a winding roller, and the winding roller is located in the middle of a side away from the motor and is rotatably connected to the bottom plate;

[0010] The top surface of the bottom plate and the side away from the motor are fixedly mounted with the vertical plate, the upper end of the vertical plate extends in the vertical direction, and a plurality of climbing rods are fixedly connected to the inner side of the vertical plate, and each climbing rod is equidistantly arranged along the length direction of the vertical plate;

[0011] Wherein, an upper limit plate is fixedly installed on the top of the vertical plate, and a directional roller is rotatably connected to the top of the upper limit plate.

[0012] As a further solution of the utility model: a lower limit plate is fixedly installed on the lower end of the side wall of the vertical plate, a connecting rope is connected through the inner wall of the lower limit plate, the lower end of the connecting rope is wrapped and bound to the outer side of the winding roller, the middle surface of the connecting rope is slidably connected to the directional roller, and the upper end of the connecting rope is also connected through the upper limit plate.

[0013] As a further solution of the utility model: a guide groove is opened on the side wall of the vertical board, the length direction of the guide groove is consistent with the length direction of the vertical board, a lifting plate is movably installed on the outer side of the vertical board, the inner side of the lifting plate is slidably connected along the guide groove, and the top surface of the lifting plate is bound and connected to the connecting rope.

[0014] As a further solution of the utility model: a through opening is opened in the middle of the lifting plate, a protective frame is fixedly installed on the top surface of the lifting plate and outside the through opening, and a supporting wheel 2 is also fixedly installed on one side of the bottom surface of the lifting plate.

[0015] As a further solution of the utility model: a bolt is connected through one side of the lifting plate, and the bottom end of the bolt passes through the bottom of the lifting plate, and the bottom end of the bolt is threadedly connected to the lower limit plate, and the inner wall of the lifting plate at one end away from the bolt is slidably connected with a positioning shaft, one end of the positioning shaft extends to the inside of the through opening, one end of the positioning shaft is fixedly connected with a spring, and the other end of the spring is fixedly connected to the inner wall of the lifting plate, and the side walls of the lifting plate and on both sides of the positioning shaft are fixedly connected with positioning sliders.

[0016] As a further solution of the utility model: the oil pumping unit body includes a base, a main frame is fixedly installed on the top of the base, a top frame is fixedly installed on the top of the main frame, the top of the top frame is rotatably connected to a pulley, the outside of the pulley is bound and connected to a belt, one end of the belt is fixedly connected to a sucker rod, the other end of the belt is fixedly connected to a counterweight box, and the outer wall of the counterweight box is slidably connected along the main frame.

[0017] As a further solution of the utility model: a positioning rail is provided on the outer surface of the main frame, a maintenance ladder is fixedly connected to the outer side of the surface of the main frame, a connecting rod is symmetrically fixedly installed on the inner side of the surface of the main frame, a positioning hole is provided on the surface of the connecting rod, the inner side of the positioning rail is slidably connected to the positioning slider, and the inside of the positioning hole is plugged into the positioning shaft.

[0018] Beneficial effects of the utility model:

[0019] (1) The utility model is provided with an inspection mechanism, and a lifting plate in the inspection mechanism can carry an operator, and the lifting plate can be lifted and lowered along the main frame of the oil pumping unit body, so that it is convenient for the operator to climb to the middle of the oil pumping unit for inspection. The inspection mechanism is fixed at the positioning rail outside the main frame, and a plurality of positioning rails outside the main frame are arranged around the oil pumping unit body, so that it is convenient to position the inspection mechanism at different positions of the oil pumping unit body, thereby facilitating the operator to inspect different positions of the middle of the oil pumping unit body;

[0020] (2) Support wheel 1 and support wheel 2 are provided at the lower end of the maintenance mechanism. When the lifting plate is at a low position, support wheel 1 and support wheel 2 contact the ground at the same time and support the maintenance mechanism together. Support wheel 1 and support wheel 2 facilitate the movement of the maintenance mechanism and connect it to the positioning rails on different sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the main body of the oil pump in the utility model;

[0024] Figure 3 It is a schematic diagram of the side view structure of the maintenance mechanism when the lifting plate in the utility model is lifted;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the maintenance mechanism in the utility model from a side perspective;

[0026] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0027] In the figure: 1. Pumping unit body; 101. Base; 102. Main frame; 103. Positioning rail; 104. Maintenance ladder; 105. Connecting rod; 106. Positioning hole; 107. Top frame; 108. Overwheel; 109. Counterweight box; 110. Pumping rod; 111. Belt; 2. Maintenance mechanism; 201. Bottom plate; 202. Support wheel 1; 203. Motor; 204. Winding roller; 205. Vertical plate; 206. Guide groove; 207. Lower limit plate; 208. Climbing pole; 209. Upper limit plate; 210. Orienting roller; 211. Connecting rope; 212. Lifting plate; 213. Bolt; 214. Protective frame; 215. Support wheel 2; 216. Positioning shaft; 217. Spring; 218. Positioning slide block; 219. Through port. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1-5 As shown, a bottom-mounted oil pumping unit includes an oil pumping unit body 1, an inspection mechanism 2 is arranged on the outside of the oil pumping unit body 1, and the inspection mechanism 2 includes a support wheel 202; the inspection mechanism 2 also includes a bottom plate 201, and the two sides of the bottom plate 201 are rotatably connected to the support wheels 202, and one side of the top surface of the bottom plate 201 is fixedly installed with a motor 203, and the output shaft of the motor 203 is fixedly connected with a winding roller 204, and the winding roller 204 is located in the middle of a side away from the motor 203. The upper part is rotatably connected to the bottom plate 201; wherein, the top surface of the bottom plate 201 and the side located away from the motor 203 is fixedly installed with the vertical plate 205, the upper end of the vertical plate 205 extends in the vertical direction, and the inner side of the vertical plate 205 is fixedly connected with a plurality of climbing rods 208, and each climbing rod 208 is arranged equidistantly along the length direction of the vertical plate 205; wherein, an upper limit plate 209 is fixedly installed on the top of the vertical plate 205, and a directional roller 210 is rotatably connected to the top of the upper limit plate 209, such as Figure 4 As shown, the user can climb to the upper end of the vertical plate 205 through the climbing pole 208, and then land on the lifting plate 212;

[0030] A lower limit plate 207 is fixedly installed at the lower end of the side wall of the vertical plate 205, and a connecting rope 211 is connected to the inner wall of the lower limit plate 207. The lower end of the connecting rope 211 is wrapped and bound with the outer side of the winding roller 204, and the middle surface of the connecting rope 211 is slidably connected with the directional roller 210, and the upper end of the connecting rope 211 is also connected to the upper limit plate 209. Figure 4-Figure 5As shown, the lower limit plate 207 and the upper limit plate 209 jointly limit the direction of the connecting rope 211;

[0031] A guide groove 206 is provided on the side wall of the vertical plate 205, and the length direction of the guide groove 206 is consistent with the length direction of the vertical plate 205. A lifting plate 212 is movably installed on the outer side of the vertical plate 205, and the inner side of the lifting plate 212 is slidably connected along the guide groove 206. The top surface of the lifting plate 212 is bound and connected with the connecting rope 211. Figure 3 As shown, the lifting plate 212 can only move along the direction of the guide groove 206;

[0032] A through hole 219 is provided in the middle of the lifting plate 212, a protective frame 214 is fixedly installed on the top surface of the lifting plate 212 and outside the through hole 219, and a supporting wheel 215 is also fixedly installed on one side of the bottom surface of the lifting plate 212. Figure 3-Figure 4 As shown, by climbing the protective frame 214, it is convenient for operators at a high place to move to the top of the lifting plate 212;

[0033] A bolt 213 is connected through one side of the lifting plate 212, and the bottom end of the bolt 213 passes through the bottom of the lifting plate 212. The bottom end of the bolt 213 is threadedly connected to the lower limit plate 207. The inner wall of the lifting plate 212 at one end away from the bolt 213 is slidably connected with a positioning shaft 216. One end of the positioning shaft 216 extends to the inside of the through-port 219. One end of the positioning shaft 216 is fixedly connected to a spring 217. The other end of the spring 217 is fixedly connected to the inner wall of the lifting plate 212. The side walls of the lifting plate 212 and both sides of the positioning shaft 216 are fixedly connected with positioning sliders 218. Figure 4 As shown, when the operator clings to the protective frame 214, he can pull the extension of the positioning shaft 216 inside the through opening 219, so that the positioning shaft 216 compresses the spring 217 and separates it from the positioning hole 106;

[0034] The main body 1 of the oil pumping unit includes a base 101, a main frame 102 is fixedly installed on the top of the base 101, a top frame 107 is fixedly installed on the top of the main frame 102, a pulley 108 is rotatably connected to the top of the top frame 107, a belt 111 is bound and connected to the outside of the pulley 108, one end of the belt 111 is fixedly connected to a sucker rod 110, the other end of the belt 111 is fixedly connected to a counterweight box 109, the outer wall of the counterweight box 109 is slidably connected along the main frame 102, a positioning rail 103 is provided on the outer surface of the main frame 102, a maintenance ladder 104 is fixedly connected to the outer side of the surface of the main frame 102, a connecting rod 105 is symmetrically fixedly installed on the inner side of the surface of the main frame 102, a positioning hole 106 is provided on the surface of the connecting rod 105, the inner side of the positioning rail 103 is slidably connected to the positioning slider 218, and the inside of the positioning hole 106 is plugged with the positioning shaft 216, such as Figure 1-Figure 2As shown, a plurality of positioning rails 103 are provided on the outer side of the main frame 102 , so as to facilitate positioning of the maintenance mechanism 2 at different positions on the surface of the main frame 102 .

[0035] The working principle of this utility model:

[0036] When the pumping unit body 1 needs to be inspected, the operator can inspect the lower components on the base 101, or climb to the top frame 107 via the inspection ladder 104 and inspect the upper components;

[0037] Secondly, push the maintenance mechanism 2 as a whole, and displace it on the ground through the support wheel 1 202 and the support wheel 2 215, align the positioning slider 218 with the positioning rail 103 inserted into the surface of the main frame 102, so that the positioning shaft 216 is against the surface of the connecting rod 105, and the positioning shaft 216 receives the thrust and shrinks into the inside of the lifting plate 212, the spring 217 shrinks, and the motor 203 is started to drive the winding roller 204 and rewind the connecting rope 211, and the lifting plate 212 rises along the guide groove 206, and the positioning shaft 216 is finally aligned with the positioning hole 106 on the surface of the connecting rod 105, and the spring 217 pushes the positioning shaft 216 into the inside of the positioning hole 106. At this time, the lifting plate 212 is fixed on the outside of the main frame 102, and the operator can climb the climbing pole 208 to the top of the lifting plate 212 for maintenance.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A bottom-mounted oil pump, comprising an oil pump body (1), an overhaul mechanism (2) being arranged outside the oil pump body (1), the overhaul mechanism (2) comprising a supporting wheel (202); It is characterized in that Also includes: The inspection mechanism (2) further comprises a bottom plate (201), two sides of the bottom plate (201) are rotatably connected to support wheels (202), one side of the top surface of the bottom plate (201) is fixedly mounted to a motor (203), an output shaft of the motor (203) is fixedly connected to a winding roller (204), and the winding roller (204) is located in the middle of a side away from the motor (203) and is rotatably connected to the bottom plate (201); The top surface of the bottom plate (201) and the side located away from the motor (203) are fixedly mounted with the vertical plate (205), the upper end of the vertical plate (205) extends in the vertical direction, and a plurality of climbing rods (208) are fixedly connected to the inner side of the vertical plate (205), and each of the climbing rods (208) is arranged equidistantly along the length direction of the vertical plate (205); An upper limit plate (209) is fixedly mounted on the top of the vertical plate (205), and a directional roller (210) is rotatably connected to the top of the upper limit plate (209).

2. A bottom-mounted oil pumping unit according to claim 1, characterized in that: A lower limit plate (207) is fixedly mounted on the lower end of the side wall of the vertical plate (205); a connecting rope (211) is passed through the inner wall of the lower limit plate (207); the lower end of the connecting rope (211) is wrapped and bound to the outer side of the winding roller (204); the middle surface of the connecting rope (211) is slidably connected to the directional roller (210); and the upper end of the connecting rope (211) is also passed through and connected to the upper limit plate (209).

3. The bottom-mounted oil pumping unit according to claim 1, characterized in that: A guide groove (206) is provided on the side wall of the vertical plate (205), and the length direction of the guide groove (206) is consistent with the length direction of the vertical plate (205). A lifting plate (212) is movably installed on the outer side of the vertical plate (205), and the inner side of the lifting plate (212) is slidably connected along the guide groove (206), and the top surface of the lifting plate (212) is bound and connected to the connecting rope (211).

4. A bottom-mounted oil pumping unit according to claim 3, characterized in that: A through opening (219) is provided in the middle of the lifting plate (212), a protective frame (214) is fixedly installed on the top surface of the lifting plate (212) and outside the through opening (219), and a supporting wheel 2 (215) is also fixedly installed on one side of the bottom surface of the lifting plate (212).

5. The bottom-mounted oil pumping unit according to claim 3, characterized in that: A bolt (213) is connected through one side of the lifting plate (212), and the bottom end of the bolt (213) passes through the bottom of the lifting plate (212), and the bottom end of the bolt (213) is threadedly connected to the lower limit plate (207). The inner wall of the end of the lifting plate (212) away from the bolt (213) is slidably connected with a positioning shaft (216), and one end of the positioning shaft (216) extends to the inside of the through opening (219). One end of the positioning shaft (216) is fixedly connected with a spring (217), and the other end of the spring (217) is fixedly connected to the inner wall of the lifting plate (212). The side walls of the lifting plate (212) and both sides of the positioning shaft (216) are fixedly connected with positioning sliders (218).

6. The bottom-mounted oil pumping unit according to claim 1, characterized in that: The oil pumping unit body (1) comprises a base (101), a main frame (102) is fixedly mounted on the top of the base (101), a top frame (107) is fixedly mounted on the top of the main frame (102), the top of the top frame (107) is rotatably connected to a pulley (108), the outside of the pulley (108) is bound and connected to a belt (111), one end of the belt (111) is fixedly connected to a sucker rod (110), the other end of the belt (111) is fixedly connected to a counterweight box (109), and the outer wall of the counterweight box (109) is slidably connected along the main frame (102).

7. A bottom-mounted oil pumping unit according to claim 6, characterized in that: The outer surface of the main frame (102) is provided with a positioning rail (103), the outer side of the surface of the main frame (102) is fixedly connected with a maintenance ladder (104), the inner side of the surface of the main frame (102) is symmetrically fixedly installed with a connecting rod (105), the surface of the connecting rod (105) is provided with a positioning hole (106), the inner side of the positioning rail (103) is slidably connected with a positioning slider (218), and the inside of the positioning hole (106) is plugged into the positioning shaft (216).

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