Multifunctional movable protective cover for crank of oil pumping unit

Abstract

The utility model discloses a pumping unit crank multifunctional movable protective cover which comprises a protective cover frame body, and the two ends of the protective cover frame body are detachably connected with length-adjustable locking units. Moving and penetrating pipes are arranged at the two ends of the protective cover frame body; the length-adjustable locking unit comprises an inner and outer pipe type telescopic pipe, a locking pipe, an adjusting cylinder and an I-shaped steel connecting piece; the inner pipe of the telescopic pipe can penetrate through the moving and penetrating pipe, a blocking cap is arranged outside the moving and penetrating pipe, and the moving and penetrating pipe is located between the blocking cap and the telescopic locking piece of the telescopic pipe. The lock pipe is connected with the outer pipe of the telescopic pipe, the upper end of the adjusting cylinder is connected with the lock pipe, and the length of the adjusting cylinder can be adjusted; the upper end of the I-shaped steel connecting piece is connected with the lower end of the adjusting cylinder, and the I-shaped steel connecting piece is used for being connected with oil pumping unit I-shaped steel. The protective cover can be quickly moved, the well stopping time is shortened, the yield loss is reduced, the productivity is effectively improved, and the labor intensity of workers is effectively relieved.

Description

Technical Field

[0001] This utility model relates to the field of oil pumping unit technology, specifically a multi-functional mobile protective cover for the crank of an oil pumping unit. Background Technology

[0002] Currently, the function of pumping unit crank guards is to isolate the crank from the outside environment, preventing personnel from directly contacting the moving crank and ensuring the personal safety of on-site workers. There are four main types of pumping unit crank guards: wrought iron railings fixed to the well platform, cement pillar railings, metal structure guards welded to the pumping unit's I-beams, and non-metal structure guards. These guards share the common characteristic of being fixed by methods such as deep embedding in the well platform in conjunction with the pumping unit foundation, welding, and threaded connections to the pumping unit's I-beams.

[0003] The most commonly used protective covers in oil fields are non-metallic structures, which are fixed by welding angle iron to the I-beam chassis of the pumping unit, and then bolting the non-metallic protective cover to the angle iron. This method has several drawbacks: First, since non-metallic protective covers are required for both new well commissioning and well opening operations, hot work is necessary, requiring electric welding to connect the angle irons. This process takes 2-3 hours depending on environmental conditions, significantly impacting oil production efficiency and increasing labor intensity. Second, non-metallic protective covers are easily damaged or blown away by strong winds and storm surges, posing a serious safety hazard. Third, the bolted connection between the non-metallic protective cover and the pumping unit's I-beam chassis, with the bolts threaded through holes for secure fastening, often results in breakage and detachment at the connection holes due to prolonged exposure to wind and sun, leading to frequent replacements, high costs, and time-consuming and labor-intensive unloading and tightening of bolts due to rust. Fourth, because the connections of the non-metallic protective covers are rigid, disassembly and reinstallation are difficult, causing inconvenience to operations, maintenance, equipment upkeep, adjustments, and well opening, increasing non-value-added workload and safety and environmental risks associated with disassembling and assembling the non-metallic protective covers. Fifth, in various maintenance and upkeep processes of pumping units, due to the single function of the protective covers, disassembly and reassembly of the non-metallic protective covers are often required, taking approximately 60% of the total time, amounting to 1 to 2 hours, reducing work efficiency and prolonging well downtime.

[0004] Announcement No. CN206093476U discloses a semi-enclosed fiberglass pumping unit protective cover, including a motor cover body and two crank cover bodies. The two crank cover bodies are connected by multiple sets of connecting components. The arched side plates of the two crank cover bodies are located on the outer side. The connecting components include two crank cover fixing tubes and crank cover fixing rods. The two crank cover fixing tubes are respectively fixed to the outer side of the bottom plate of the two crank cover bodies. The crank cover fixing rods are inserted into the two crank cover fixing tubes. The two ends of the crank cover fixing rods protrude from the edges of the crank cover fixing tubes and are fixed by pins.

[0005] This technical solution involves fixing two crank guard fixing tubes to the outer side of the base plate of each crank guard body. The installation method of this prior art differs from that of this patent.

[0006] Announcement No. CN205778764U discloses a novel crank motor guard for an oil pumping unit, comprising a crank guard and a motor guard. The crank guard frame is a semi-circular crank guard frame welded from angle iron, with a first reinforcing rib inside the crank guard frame. A first steel mesh is laid flat inside the crank guard frame, and a warning sign is installed at the upper center inside the crank guard frame. The motor guard frame is an arc-shaped motor guard frame welded from angle iron, with a second reinforcing rib inside the motor guard frame. A second steel mesh is laid flat inside the motor guard frame.

[0007] The technical solution uses a semi-circular crankshaft guard frame welded from angle iron. The installation method of this prior art differs from that of this patent.

[0008] Announcement No. CN203488153U discloses a molded spliced ​​oil pump protective cover, which is composed of a right side cover and a left side cover connected together. The vertical surfaces of the left side cover and the right side cover are respectively provided with multiple sets of air holes. The bottom of the left side cover and the right side cover are provided with drainage grooves and supports. The back of the left side cover and the right side cover are provided with mesh reinforcing ribs. The front of the left side cover and the right side cover are provided with pultruded crossbeams.

[0009] This technical solution involves modular molding and assembly. The installation method of existing technologies differs from that of this patent.

[0010] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of this utility model. For more technical features, technical problems to be solved, and beneficial effects of this utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0011] In view of the above-mentioned defects in the existing technology, the purpose of this utility model is to provide a multi-functional mobile protective cover for the crank of an oil pumping unit.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A multi-functional mobile protective cover for the crank of an oil pump includes a protective cover frame, with adjustable length locking units detachably connected to both ends of the protective cover frame.

[0014] Furthermore, the protective cover frame is provided with transfer tubes at both ends;

[0015] Specifically, the length-adjustable locking unit includes inner and outer tubular telescopic tubes, a locking tube, an adjusting cylinder, and an I-beam connector;

[0016] Specifically, the inner tube of the telescopic tube can pass through the transfer tube, and a stop cap is provided outside the transfer tube. The transfer tube is located between the stop cap and the telescopic locking member of the telescopic tube.

[0017] Specifically, the locking tube is connected to the outer tube of the telescopic tube, the upper end of the adjusting cylinder is connected to the locking tube, and the adjusting cylinder can adjust the length;

[0018] Specifically, the upper end of the I-beam connector is connected to the lower end of the adjusting cylinder, and the I-beam connector is used to connect to the I-beam of the oil pumping unit.

[0019] In one embodiment of this utility model, the I-beam connector includes a set screw and a locking hook;

[0020] Specifically, the locking hook is a U-shaped plate, including a fork plate, a connecting plate, and a second fork plate;

[0021] Specifically, the lower end of the adjusting cylinder is connected to the connecting plate;

[0022] Specifically, a baffle is connected to the lower end of the first fork plate, the baffle is located between the first fork plate and the second fork plate, and a set screw is provided on the second fork plate. The baffle and the set screw are used to lock the inner edge of the H-beam of the pumping unit.

[0023] In another embodiment of this utility model, the I-beam connector includes a support rod, a fixing member, and a pressure plate;

[0024] Specifically, the lower end of the adjusting cylinder is connected to the support rod;

[0025] Specifically, the lower end of the support rod is connected to a fixing member;

[0026] Specifically, a pressure plate is symmetrically arranged on the lower end face of the fixing member, and the pressure plate can lock the inner edge of the I-beam of the oil pumping unit.

[0027] Furthermore, the pressure plate and the fastener are connected by screws, nuts, and anti-loosening washers.

[0028] Furthermore, the protective cover frame includes a sliding arc-shaped cover;

[0029] Specifically, the sliding arc-shaped cover includes an inner tie rod, an outer tie rod, an inner arc tube, an outer arc tube, and a cross brace;

[0030] Specifically, both ends of the inner arc tube, outer arc tube, inner tie rod, and outer tie rod are connected to the transfer tube, and a cross brace is connected between the inner arc tube and the outer arc tube;

[0031] Specifically, the outer tie rod and the outer arc tube are located in the same plane;

[0032] Specifically, the inner tie rod is located between the inner arc tube and the outer arc tube.

[0033] Furthermore, at least two cross braces are provided, with the bottom cross brace connected to a bottom support mechanism, which includes a bottom locking tube, a bottom adjusting cylinder, and a support base;

[0034] Specifically, the bottommost horizontal brace is connected to the locking tube, the upper end of the bottom adjusting cylinder is connected to the locking tube, the lower end of the bottom adjusting cylinder is connected to the support base, and the length of the bottom adjusting cylinder is adjustable.

[0035] Furthermore, it also includes a platform section, which includes tread plates and guardrail frames;

[0036] Specifically, one side of the guardrail frame is rotatably connected to the outer tie rod, the guardrail frame is provided with a footboard rib, and the inward side of the footboard rib is covered with metal mesh when it is vertical. The width of the guardrail frame is greater than the width between the inner tie rod and the outer tie rod.

[0037] Furthermore, a reflective film is pasted on the outward-facing side of the treadle in its vertical state, and a human body induction sound, light, and voice alarm device is installed.

[0038] Furthermore, it also includes a ladder section, which includes ladder rings, ladder steps, ladder supports, and ladder supports;

[0039] Specifically, two ladder rings are rotatably connected to the same transfer tube, one ladder ring is connected to one ladder support, a ladder step is connected between the two ladder supports, and a ladder support is connected to the bottom of the two ladder supports. The length of the ladder support is greater than the width between the inner and outer tie rods, and the ladder support can rest on the inner and outer tie rods.

[0040] Compared with the prior art, the present invention has the following advantages:

[0041] 1. This utility model allows for rapid movement of the protective cover, reducing well downtime, minimizing production loss, effectively improving productivity, and significantly reducing the labor intensity of employees; it effectively reduces safety risks, eliminating the need for on-site hot work during pumping unit installation, thus eliminating the safety risks associated with hot work; this utility model has a long service life, low maintenance costs, is unaffected by storm surges, and is resistant to aging and weathering; this utility model saves time and effort during pumping unit maintenance, greatly reducing material costs and improving oil recovery rate; this utility model replaces the original non-metallic boat-shaped protective cover installation method with an adjustable-length locking unit, making it less susceptible to damage in severe weather.

[0042] 2. This utility model changes the connection and fixing method. The original welded bolt connection and fixing is replaced by two methods: a pressure plate fixing component and a locking mechanism. Both methods are weld-free and require no hot work for connection and fixing. The bolts and set screws are all made of Beefert 304 stainless steel hexagonal bolts, ensuring a secure fit and preventing rust. The new installation time is reduced by at least 2 hours compared to the original method.

[0043] 3. This utility model changes the protection method by adopting a boat-shaped structure. By attaching reflective film to its protective cover, it will immediately produce reflective warnings to prevent people from getting close when exposed to light. It also installs a human body induction sound and light alarm device to provide immediate sound and light warnings to prevent people from getting close and avoid personal contact injury, thus achieving the purpose of harmless contact.

[0044] 4. This utility model changes the disassembly and assembly method. By sliding the base tube and the transfer tube, the whole body can be moved and disassembled without deformation, reducing operation steps and avoiding harmful joints. It is quick, safe and convenient, shortening the original disassembly and assembly time from 2 hours to 5 minutes. The bottom adjusting cylinder can quickly raise and lower the positioning and support its protective cover to maintain balanced force and prevent deformation. The locking ring and nut positioning prevent left and right movement and deviation, achieving the purpose of no welding, no harmful joints and no deformation.

[0045] 5. This utility model changes the main material structure, adopting a 316L stainless steel pipe metal structure (round pipe with a diameter of 20mm and a wall thickness of about 1.2mm). The iron railings made from this structure are unobstructed during inspections, making the inspection process more visible; corrosion resistance prevents rusting, extends the service life by 6 years, reduces maintenance costs, is unaffected by storm surges, and reduces non-metallic solid waste; high strength prevents deformation and makes the structure lightweight, ensuring long-term stability of its protective function and quick assembly and disassembly.

[0046] 6. This utility model adds multiple protective cover functions. The platform part hanging on the footplate rib outside the metal boat-shaped protective cover; when the pumping unit is running, it faces vertically downwards, playing a blocking and protective role; when shutting down the well, it can be flipped up and placed horizontally on top, serving as an operating platform; the ladder part set at either end can be flipped down to the well platform ground when shutting down the well, allowing operators to safely and quickly climb onto the operating platform, where they can safely and quickly perform various pumping unit maintenance operations, shortening the time by 0.5 hours compared to the original operation. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of a multi-functional mobile protective cover for the crank of an oil pumping unit according to this utility model;

[0048] Figure 2 This is a schematic diagram of the structure of the I-beam connector in Example 2;

[0049] Figure 3 This is a structural schematic diagram of the ladder part in this utility model;

[0050] Figure 4 This is a schematic diagram of the installation of the reflective film and the human body induction sound, light and voice alarm device in this utility model.

[0051] In the diagram: 1. Front base tube; 2. Front locking tube; 3. Front adjusting cylinder; 4. Front top screw; 5. Front locking hook; 6. Front moving through tube; 7. Inner arc tube; 8. Ladder hanging ring; 9. Ladder step; 10. Ladder support; 11. Front nut; 12. Ladder support; 13. Inner tie rod; 14. Outer tie rod; 15. Outer arc tube; 16. Horizontal brace; 17. Bottom locking tube; 18. Bottom adjusting cylinder; 19. Support seat; 20. Step rib; 21. Guardrail frame; 22. Rear nut; 23. Rear moving through tube; 24. Rear locking ring; 25. Rear locking hook; 26. Rear top screw; 27. Rear adjusting cylinder; 28. Rear locking tube; 29. ​​Rear base tube; 30. Support rod; 31. Screw; 32. Nut; 33. Anti-loosening washer; 34. Fixing component; 35. Pressure plate; 36. Pumping unit I-beam; 37. Reflective film; 38. Human body induction sound and light alarm device; 39. Detailed Implementation

[0052] 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.

[0053] Example 1:

[0054] Please see Figures 1 to 4The present invention provides a multi-functional mobile protective cover for a pumping unit crank, comprising a front locking frame and a rear locking frame. The front locking frame includes a front base tube 1, and a front locking mechanism is provided at the inner end of the front base tube 1. The rear locking frame includes a rear base tube 30, and a rear locking mechanism is provided at the inner end of the rear base tube 30. The front base tube 1 and the rear base tube 30 are slidably connected to the protective cover frame body.

[0055] Furthermore, the protective cover frame includes a sliding arc-shaped cover and a bottom support mechanism.

[0056] The sliding arc-shaped cover includes a forward-moving through tube 7, a backward-moving through tube 24, an inner tie rod 14, an outer tie rod 15, an inner arc tube 8, an outer arc tube 16, and a cross brace 17.

[0057] Specifically, the front base tube 1 passes through the front moving tube 7, and a front nut 12 is installed at the outer end of the front base tube 1 to prevent the front moving tube 7 from coming out. The front base tube 1 is provided with a front locking ring 6, which is located between the front moving tube 7 and the front locking mechanism to prevent the front moving tube 7 from moving inward. The front moving tube 7 is welded to the inner arc tube 8 and the outer arc tube 16. A cross brace 17 is welded between the inner arc tube 8 and the outer arc tube 16. The front moving tube 7 is welded to the inner tie rod 14 and the outer tie rod 15. The welding point of the outer tie rod 15 to the front moving tube 7 is the same as the welding point of the outer arc tube 16 to the front moving tube 7.

[0058] Specifically, the rear-moving tube 24 is sleeved on the rear base tube 30. A rear nut 23 is provided at the outer end of the rear base tube 30 to prevent the rear-moving tube 24 from coming out. A rear locking ring 25 is provided on the rear base tube 30. The rear locking ring 25 is located between the rear-moving tube 24 and the rear locking mechanism. The rear-moving tube 24 is used to prevent the rear-moving tube 24 from moving inward. The rear-moving tube 24 is welded to the ends of the inner arc tube 8 and the outer arc tube 16. The rear-moving tube 24 is also welded to the ends of the inner tie rod 14 and the outer tie rod 15. The welding point between the outer tie rod 15 and the rear-moving tube 24 is the same as the welding point between the outer arc tube 16 and the rear-moving tube 24.

[0059] Specifically, the inner tie rod 14 is located between the inner arc tube 8 and the outer arc tube 16.

[0060] Preferably, seven cross braces 17 are provided between the inner arc tube 8 and the outer arc tube 16.

[0061] Specifically, the front base tube 1 is an inner and outer tubular telescopic tube, and the front locking ring 6 controls the expansion and contraction of the exposed section of the inner tube of the front base tube 1; the rear base tube 30 is an inner and outer tubular telescopic tube, and the rear locking ring 25 controls the expansion and contraction of the exposed section of the inner tube of the rear base tube 30; the front locking ring 6 or the rear locking ring 25 includes a threaded sleeve and a split conical sleeve. The inner wall of the threaded sleeve is provided with a conical surface and a threaded surface. The threaded sleeve is threadedly connected to the outer tube of the inner and outer tubular telescopic tube. The split conical sleeve is between the outer tube of the inner and outer tubular telescopic tube and the conical surface of the threaded sleeve. Tightening the threaded sleeve causes the conical surface to press against the split conical sleeve, thus pressing against the inner tube of the inner and outer tubular telescopic tube.

[0062] The bottom support mechanism includes a bottom locking tube 18, a bottom adjusting cylinder 19, and a support base 20.

[0063] Specifically, the fourth cross brace 17 welded between the inner arc tube 8 and the outer arc tube 16 is located at the bottom. The bottom locking tube 18 is fitted onto the bottom cross brace 17 and can be locked with screws. The upper end of the bottom adjusting cylinder 19 is connected to the bottom locking tube 18 through a steel pipe. The lower end of the bottom adjusting cylinder 19 is welded to the support base 20. The bottom adjusting cylinder 19 plays the role of raising and lowering, supporting the cross brace 17, the inner arc tube 8, and the outer arc tube 16.

[0064] Furthermore, the front locking mechanism includes a front locking tube 2, a front adjusting cylinder 3, a front set screw 4, and a front locking hook 5; the front locking tube 2 is fitted onto the front base tube 1 and tightened with screws to prevent the front base tube 1 from moving; the upper end of the front adjusting cylinder 3 is welded to the front locking tube 2 through a steel pipe, and the lower end of the front adjusting cylinder 3 is welded to the front locking hook 5, which serves to lift and support the front base tube 1; the front locking hook 5 is provided with a front set screw 4 on its top edge; the front locking hook 5 is hung on the outer edge of the front I-beam 37 of the pumping unit; the front set screw 4 is clamped on the inner edge of the I-beam of the pumping unit; tightening the front set screw 4 with force supports the front base tube 1.

[0065] Furthermore, the rear locking mechanism includes a rear locking hook 26, a rear set screw 27, a rear adjusting cylinder 28, and a rear locking tube 29; the rear locking tube 29 is fitted onto the rear base tube 30 and tightened with screws to prevent the rear base tube 30 from moving; the upper end of the rear adjusting cylinder 28 is welded to the rear locking tube 29 through a steel pipe, and the lower end of the rear adjusting cylinder 28 is welded to the rear locking hook 26, which serves to lift and support the rear base tube 30; the rear locking hook 26 is provided with a rear set screw 27 on its top edge; the rear locking hook 26 is hung on the outer edge of the rear I-beam 37 of the pumping unit, and the rear set screw 27 is clamped on the inner edge of the I-beam of the pumping unit; the rear set screw 4 is tightened forcefully to support the rear base tube 1.

[0066] It should be noted that the front adjusting cylinder 3, the rear adjusting cylinder 28, and the bottom adjusting cylinder 19 in this patent are prior art, and can be a pipe length adjusting mechanism disclosed in publication number CN215859393U.

[0067] Example 2:

[0068] Please combine Figure 2 Based on Embodiment 1, in this embodiment, the lower end of the front adjusting cylinder 3 and / or the rear adjusting cylinder 28 is connected to a support rod 31. The end of the support rod 31 is welded with a plate-shaped fixing member 35. The plate-shaped fixing member 35 is connected to the outer edge of the pumping unit I-beam 37 through two sets of pressure plates 36, screws 32, nuts 33, and anti-loosening washers 34. The lower end face of the fixing member 35 is in contact with the upper end face of the pumping unit I-beam 37. The pressure plate 36 is in contact with the lower end face of the fixing member 35 and the outer edge of the pumping unit I-beam 37. The screw 32 passes through the fixing member 35 and the pressure plate 36. The nuts 33 and the anti-loosening washers 34 lock the pressure plate 36 and the fixing member 35. The anti-loosening washers 34 have the function of resisting vibration and preventing loosening of the pumping unit I-beam 37.

[0069] Example 3:

[0070] Based on Example 1, the protective cover frame in this example also includes a platform section and a ladder section.

[0071] Specifically, the platform includes a footboard rib 21 and a guardrail frame 22. One side of the guardrail frame 22 is connected to the outer tie rod 15 by a hoop, so that the guardrail frame 22 and the outer tie rod 15 are rotatably connected. The guardrail frame 22 is provided with a footboard rib 21. The inward side of the footboard rib 21 in the vertical state is covered with metal mesh. The footboard rib 21 is welded to the guardrail frame 22. The width of the guardrail frame 22 is greater than the width between the inner tie rod 14 and the outer tie rod 15.

[0072] Preferably, five ring hoops are provided, 13 treadle ribs are provided, and the width of the guardrail frame 22 is 1 cm greater than the width between the inner tie rod 14 and the outer tie rod 15.

[0073] Specifically, the ladder section includes a hanging ring 9, a step 10, a support 11, and a support 13; two hanging rings 9 are loosely fitted around the front through-tube 7, one hanging ring 9 is welded to one support 11, the step 10 is vertically welded between the two supports 11, and the support 13 is welded to the bottom of the two supports 11. The length of the support 13 is greater than the width between the inner tie rod 14 and the outer tie rod 15, and the support 13 can rest on the inner tie rod 14 and the outer tie rod 15.

[0074] The ladder section, consisting of the hanging ring 9, ladder step 10, ladder support 11, front nut 12, and ladder support 13, is placed on the ground, with the ladder support 13 touching the ground to provide stability. For example... Figure 3 As shown.

[0075] Preferably, the ladder 10 has 8 steps, and the length of the ladder support 13 is 1 cm greater than the width between the inner tie rod 14 and the outer tie rod 15.

[0076] Furthermore, a reflective film 38 is affixed to the outward side of the pedal rib 21 in the vertical state, which immediately produces a reflective warning to prevent approach when exposed to light. A human body induction sound and light alarm device 39 is set on the outward side of the pedal rib 21 in the vertical state, which immediately provides sound and light warnings to prevent approach and avoid personal injury caused by close contact, thus achieving the purpose of harmless contact.

[0077] Example 4:

[0078] Based on Example 3, this example provides a method for using a movable protective cover for a pumping unit crank, including the following steps:

[0079] The front base pipe 1 is fixed, supported, and raised / lowered using a hook method. When the front base pipe 1 is not horizontal, the height is improper, or the hook is loose, the front base pipe 1 is raised / lowered using the front adjusting cylinder 3 to make it horizontal and the height appropriate. The front top screw 4 is tightened forcefully to make the front locking hook 5 securely lock the pumping unit I-beam 37. The bottom adjusting cylinder 19 is used to raise / lower the support cross brace 17, inner arc pipe 8, and outer arc pipe 16 to make the inner tie rod 14, outer tie rod 15, front moving through pipe 7, and rear moving through pipe 24 bear forces evenly and keep them horizontal and undeformed.

[0080] Loosen the front locking ring 6 and the rear locking ring 25, push the exposed inner pipe sections of the front base pipe 1 and the rear base pipe 30 into the outer pipe, and then tighten the front locking ring 6 and the rear locking ring 25 to shorten the front base pipe 1 and the rear base pipe 30 to make room and achieve the purpose of not affecting the construction operation.

[0081] Move the protective cover frame, remove the front nut 12 and the rear nut 23, loosen the front locking ring 6 and the rear locking ring 25, pull out the exposed pipe sections of the front base pipe 1 and the rear base pipe 30 to install the protective cover, pass the exposed pipe sections of the front base pipe 1 and the rear base pipe 30 through the front moving pipe 7 and the rear moving pipe 24, tighten the front locking ring 6 and the rear locking ring 25, and then install the front nut 12 and the rear nut 23 on the outer end pipe head to prevent the front moving pipe 7 and the rear moving pipe 24 from coming out.

[0082] After climbing over one end of the ladder (ladder 13) to the well platform, the ladder is lowered to the ground. Then, it is climbed over the guardrail frame (22) and pressed onto the inner tie rod (14) to form a well-stopping operation platform. Operators can climb up the ladder to the operation platform to perform various operations, such as maintaining the crank pin assembly bearings, tightening the crank pins, adjusting the balance, replacing belts, brakes, changing the lubricating oil in the gearbox, and tightening the gearbox bolts.

[0083] The guardrail frame 22 is attached to the outer arc pipe 16, covering more than half of the semi-arc side area, serving as a protective cover. The ladder is then climbed up, and its ladder support 13 presses on the inner tie rod 14 and the outer tie rod 15, freeing up the ground space of the well platform.

[0084] Example 5:

[0085] Based on Example 1, the main body of this protective cover is made of metal. The metal pipes from the front base pipe 1 to the rear base pipe 30 are primarily made of 316L stainless steel (round pipes approximately 20mm in diameter and 1.2mm in wall thickness). The coastal environment has high salt content and humidity, and is frequently corroded by seawater droplets, exhibiting strong corrosiveness. 316L stainless steel is an ultra-low carbon type, possessing strong resistance to high-salt environments containing chloride ions. It effectively resists the harsh corrosive conditions of coastal areas, preventing the railing from rusting over long periods and ensuring the long-term stability of its protective function. Its strength meets the requirements for the railing to withstand certain pressures, resisting impacts from sand and gravel carried by sea winds, as well as the weight and collisions that may occur during daily operations. Simultaneously, by rationally selecting the pipe diameter and wall thickness, relative lightweight is achieved while ensuring strength, facilitating installation and transportation, and avoiding excessive additional load on the pumping unit. The bolts, including the front set screw 4, bottom adjusting cylinder 19, and rear set screw 27, are made of 304 stainless steel, which has good rust resistance. The nuts have an anti-slip locking design. Through special thread structure or increased friction, the bolts are effectively prevented from loosening. They are suitable for connecting oil pumping unit components with high requirements for anti-loosening.

[0086] Due to storm surge, a weld point on the pumping unit cover of a certain well cracked, requiring hot work. Since the well is located inside a chemical plant, hot work permits needed to be obtained from the plant, which was time-consuming and cumbersome. To address this, a movable support frame was installed, allowing for single-person installation, saving time and effort, and ensuring simple and safe operation. The application of the movable protective cover shortened installation time, reduced labor intensity, and improved oil production efficiency. On average, the disassembly and assembly time is reduced by 2 hours per operation. Based on the calculation that each well requires protective cover adjustment and installation once a year, this translates to an annual increase in benefits of 0.2 million yuan.

[0087] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0088] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0090] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-functional mobile protective cover for the crank of an oil pumping unit, comprising a protective cover frame, characterized in that, The protective cover frame has detachable and length-adjustable locking units at both ends; The protective cover frame is equipped with transfer tubes at both ends; The length-adjustable locking unit includes inner and outer tubular telescopic tubes, a locking tube, an adjusting cylinder, and an I-beam connector; The inner tube of the telescopic tube can pass through the transfer tube, and a stop cap is provided outside the transfer tube. The transfer tube is located between the stop cap and the telescopic locking member of the telescopic tube. The locking tube is connected to the outer tube of the telescopic tube, and the upper end of the adjusting cylinder is connected to the locking tube. The adjusting cylinder can adjust the length. The upper end of the I-beam connector is connected to the lower end of the adjusting cylinder, and the I-beam connector is used to connect to the I-beam of the oil pumping unit.

2. The multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 1, characterized in that, The I-beam connector includes a set screw and a locking hook; The locking hook is a U-shaped plate, including a fork plate, a connecting plate, and a second fork plate; The lower end of the adjusting cylinder is connected to the connecting plate; The lower end of the first fork plate is connected to a baffle plate, which is located between the first fork plate and the second fork plate. The second fork plate is provided with a set screw. The baffle plate and the set screw are used to lock the inner edge of the I-beam of the oil pumping unit.

3. The multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 1, characterized in that, The I-beam connector includes a support rod, a fixing component, and a pressure plate; The lower end of the adjusting cylinder is connected to the support rod; The lower end of the support rod is connected to a fixing component; The lower end face of the fastener is symmetrically provided with a pressure plate, which can lock the inner edge of the I-beam of the oil pumping unit.

4. The multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 3, characterized in that, The pressure plate and the fastener are connected by screws, nuts, and anti-loosening washers.

5. A multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 1, characterized in that, The protective cover frame includes a sliding arc-shaped cover; The sliding arc-shaped cover includes an inner tie rod, an outer tie rod, an inner arc tube, an outer arc tube, and a cross brace; Both ends of the inner arc tube, outer arc tube, inner tie rod, and outer tie rod are connected to the transfer tube, and a cross brace connects the inner arc tube and the outer arc tube; The outer tie rod and the outer arc tube are located on the same plane; The inner tie rod is located between the inner arc tube and the outer arc tube.

6. A multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 5, characterized in that, At least two cross braces are provided, with the bottom cross brace connected to a bottom support mechanism, which includes a bottom locking tube, a bottom adjusting cylinder, and a support base. The bottommost horizontal brace is connected to the locking tube, the upper end of the bottom adjusting cylinder is connected to the locking tube, the lower end of the bottom adjusting cylinder is connected to the support base, and the length of the bottom adjusting cylinder is adjustable.

7. A multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 5, characterized in that, It also includes a platform section, which includes tread plates and guardrail frames; The fence frame is rotatably connected to the outer tie rod on one side. The fence frame is provided with a footboard rib. The footboard rib is covered with metal mesh on its inward side when it is vertical. The width of the fence frame is greater than the width between the inner tie rod and the outer tie rod.

8. A multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 7, characterized in that, The treadle rib is vertically positioned with a reflective film pasted on the outward side and equipped with a human body induction sound, light and voice alarm device.

9. A multi-functional mobile protective cover for the crank of an oil pumping unit according to claim 5, characterized in that, It also includes a ladder section, which includes ladder rings, ladder steps, ladder supports, and ladder supports; Two ladder rings are rotatably connected to the same transfer tube, one ladder ring is connected to one ladder support, a ladder step is connected between the two ladder supports, and a ladder support is connected to the bottom of the two ladder supports. The length of the ladder support is greater than the width between the inner and outer tie rods, and the ladder support can rest on the inner and outer tie rods.

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