Quick-mounting type light rod anti-falling bearing device

Abstract

The application relates to the technical field of pumping unit components, in particular to a quick-assembly type polished rod anti-falling supporting device. The technical scheme is as follows: a quick-assembly type polished rod anti-falling supporting device, which comprises a left main body, a right main body, a pin shaft, a locking wheel, a slip knot nut and a slip knot bolt; one end of the left main body and one end of the right main body are connected together through the pin shaft to form an openable and closable structure, the left main body and the right main body are buckled on a polished rod of a pumping unit, and the locking wheel is arranged between the left main body and the polished rod and between the right main body and the polished rod; the head of the slip knot bolt is rotationally connected to the other end of the left main body, the tail of the slip knot bolt is clamped to the other end of the right main body, and the slip knot nut is screwed on the tail of the slip knot bolt to clamp the left main body and the right main body on the polished rod. The application has the advantages of simple structure, low cost, convenient installation and dismounting, adjustable position at any time, safety and reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pumping unit components, in particular to a quick-mounting type polished rod anti-falling bearing device. BACKGROUND

[0002] The polished rod of a pumping unit is an important device for connecting a horse head to a downhole oil pump through a rope hanger, and its function is to suspend the polished rod on the rope hanger through a polished rod clamp to connect and transmit the power of the pumping unit to the horse head, thereby driving the downhole deep well pump to pump oil. Polished rod pumping is a process of up-and-down reciprocating motion, and the polished rod is the position that bears the largest load from the well because it is the uppermost end of the entire rod string. In addition, the rod string is subjected to alternating loads in the up-and-down reciprocating motion in the production of rod pump, and all these loads are suspended on the horse head through the polished rod clamp, so that the polished rod clamp becomes a high stress concentration point. In order to prevent the polished rod from falling off, the clamp of the polished rod clamp tightly bites the polished rod of the pumping unit, which can cause damage to the polished rod of the pumping unit, thereby reducing the use strength of the polished rod of the pumping unit and leaving hidden dangers for the breakage of the polished rod of the pumping unit. It has been proved that the breakage of the polished rod of the pumping unit often occurs at the first polished rod clamp. If not found in time, it will cause large-scale pollution, bending and deformation of the polished rod of the pumping unit, burning of the motor due to idling, damage of the pumping unit equipment, etc., resulting in shutdown of the oil well for maintenance operation and direct economic losses. Polished rod falling and breakage accidents occur from time to time in the production of pumping unit rod pump wells.

[0003] At present, many methods have been taken to prevent polished rod breakage in actual field applications. In the early stage, a standby square polished rod clamp was punched at 15 cm above the packing box when the pumping unit was at the lower dead point. The existing polished rod anti-falling devices applied in the field are very miscellaneous, and each oilfield selects different polished rod anti-falling devices. Objectively speaking, most of these products have achieved good results in actual application, are effective, and have played an important role in oilfield production. However, according to the feedback from the field, it is found that these products still have some deficiencies and problems in actual application.

[0004] Its main problem is; part product structure is complex, cost is higher, installation and debugging need operation team cooperation. In addition, although some products are simple structure, low cost, but in locking mode can cause damage to the polished rod, at the same time, also exist installation, disassembly and debugging inconvenient problem. Because the polished rod anti falling device before delivery is installed by the workover operation team. After the workover operation team completes the workover pump inspection, the polished rod anti falling device is pre clamped on the polished rod, and the pre clamping position is generally random. Therefore, after the oil production team connects the well, the oil production worker responsible for the management of the oil well must adjust the pre clamping position of the polished rod anti falling device according to the production demand of the oil well. In addition, in order to improve the pump efficiency during the production of the oil well, the pump is often hit again and the anti collision distance is adjusted again, so the pre clamping position of the polished rod anti falling device also needs to be adjusted again. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a quick installation type polished rod anti falling bearing device, and the specific technical scheme is as follows:

[0006] A quick installation type polished rod anti falling bearing device, comprising a left main body, a right main body, a pin shaft, a locking wheel, a running knot nut and a running knot bolt; one end of the left main body and one end of the right main body are connected together through the pin shaft to form an openable and closable structure, the left main body and the right main body are buckled on the polished rod of the pumping unit, and the locking wheel is arranged between the left main body and the polished rod and between the right main body and the polished rod; the head of the running knot bolt is rotationally connected to the other end of the left main body, the tail of the running knot bolt is clamped with the other end of the right main body, and the running knot nut is screwed on the tail of the running knot bolt to clamp the left main body and the right main body on the polished rod.

[0007] The preferred scheme of the quick installation type polished rod anti falling bearing device is that the left main body comprises an ear seat a, an anti falling plate a and a mounting seat a;

[0008] Two ear seats a are arranged on the upper end of the anti falling plate a, and two mounting seats a are arranged on the lower end of the anti falling plate a; a mounting port a is arranged between the two ear seats a, and a mounting port b is arranged between the two mounting seats a; through holes are arranged on the two mounting seats a;

[0009] A left clamping port and an inclined groove a are arranged on the side of the anti falling plate a facing the right main body, the left clamping port is arc-shaped and is used for cooperating with the polished rod; the inclined groove a is connected through the left clamping port in the transverse direction and penetrates from the upper end surface of the anti falling plate a to the bottom surface of the anti falling plate a in the longitudinal direction; the inner wall of the inclined groove a is inclined, and the inclined groove a is arranged in a manner that the width of the upper end surface of the anti falling plate a is wider than that of the bottom surface of the anti falling plate a; sliding grooves a are arranged on the two side walls of the inclined groove a respectively, and the sliding grooves a are arranged in an inclined manner and are in parallel with the inclined surface of the inclined groove a;

[0010] The right main body comprises an ear seat b, an anti falling plate b and a mounting seat b;

[0011] The ear seat b is arranged on the upper end of the anti-falling plate b, and the mounting seat b is arranged on the lower end of the anti-falling plate b; two mounting ports c are arranged between the two mounting seats b;

[0012] The anti-falling plate b is provided with a right clamping port and an inclined groove b on the side of the left main body, the right clamping port is arc-shaped and used for cooperating with the polished rod; the inclined groove b is connected through the right clamping port in the transverse direction and penetrates from the upper end surface of the anti-falling plate b to the bottom surface of the anti-falling plate b in the longitudinal direction; the inner wall of the inclined groove b is inclined, and the inclined groove b is arranged in a manner that the width of the upper end surface of the anti-falling plate b is greater than that of the bottom surface of the anti-falling plate b; the two side walls of the inclined groove b are respectively provided with slide grooves b, and the slide grooves b are arranged in an inclined manner and are parallel to the inclined surface of the inclined groove b.

[0013] The ear seat a and the ear seat b are both provided with mounting holes; the ear seat b is placed in the mounting port a between the two ear seats a, and the pin shaft is inserted into the mounting hole, so that the left main body and the right main body are connected to form an openable and closable structure.

[0014] The fast-assembled polished rod anti-falling bearing device has the following preferred solution: the surface of the locking wheel is concave and arc-shaped, and is used for being attached to the polished rod; the two sides of the locking wheel are respectively provided with convex shafts, and the convex shafts are placed in the slide groove a or the slide groove b.

[0015] The fast-assembled polished rod anti-falling bearing device has the following preferred solution: the head of the slip bolt is provided with a mounting head, the mounting head is provided with a circular hole, and the tail of the slip bolt is a cylindrical screw rod; the mounting head is arranged in the mounting port b of the left main body, the mounting head is connected to the mounting seat a by inserting a connecting pin into the through hole and the circular hole; the cylindrical screw rod of the slip bolt is clamped in the mounting port c, and the slip nut is screwed on the cylindrical screw rod to clamp the left main body and the right main body on the polished rod.

[0016] The fast-assembled polished rod anti-falling bearing device has the following preferred solution: the anti-falling plate a and the anti-falling plate b are provided with screw holes for mounting limiting screws; when the locking wheel is installed, the limiting screws preliminarily position the position of the locking wheel in the inclined groove a or the inclined groove b.

[0017] The fast-assembled polished rod anti-falling bearing device has the following preferred solution: the upper end surfaces of the anti-falling plate a and the anti-falling plate b are both provided with concave assembly ports, an upper pressing plate is arranged on the assembly port, the upper pressing plate is locked on the anti-falling plate a and the anti-falling plate b by a pressing screw, and the locking wheel is prevented from being pulled out.

[0018] The working process of the fast-assembled polished rod anti-falling bearing device is as follows: the left main body and the right main body are connected at one end by a shaft pin and are clamped on the polished rod; the locking wheel is wedged and pressed on the polished rod, and the locking wheel is supported by the limiting screw; then the left main body and the right main body are clamped by the slip bolt and the slip nut, and are tightly installed on the polished rod.

[0019] When the anti-collision distance needs to be readjusted, first loosen the quick-release nut to detach the quick-mounting type light rod anti-falling support device from the light rod; separate the left body and the right body, so that the quick-mounting type light rod anti-falling support device can slide up and down on the light rod at will, and the position of the quick-mounting type light rod anti-falling support device is readjusted.

[0020] The quick-mounting type light rod anti-falling support device is pre-tightened on the light rod when it is installed. When the upper light rod is broken off, the quick-mounting type light rod anti-falling support device pre-tightened on the light rod falls together with the broken light rod and the sucker rod string in the oil well. When the quick-mounting type light rod anti-falling support device collides with the light rod sealing box, the inclined grooves in the left body and the right body will further squeeze the locking wheels to make them further lock the light rod, thereby preventing the light rod and the sucker rod string in the oil well from continuing to slide down, and achieving the purpose of broken-off protection.

[0021] The beneficial effects of the present application are as follows:

[0022] ①The left body and the right body can be opened and closed, and the quick-mounting type light rod anti-falling support device can be installed and fixed at any position on the light rod by using the quick-release bolt and the quick-release nut.

[0023] ②The sliding type locking wheel and the locking structure of the inclined grooves in the left body and the right body can achieve traceless locking when preventing the light rod from breaking off, thereby improving the anti-breaking-off effect and protecting the light rod from being damaged.

[0024] ③The quick-release bolt and the quick-release nut are used for clamping, which is convenient for oil production team workers and can adjust the installation position of the present application at any time.

[0025] ④The present application has the advantages of simple structure, low cost, safety and reliability, and convenient on-site installation and application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic diagram of a quick-mounting type light rod anti-falling support device of the present application;

[0027] Figure 2 FIG. 4 is a schematic diagram of a shaft pin structure;

[0028] Figure 3 FIG. 5 is a schematic diagram of a left body structure; wherein (a) is a front view and (b) is a right view;

[0029] Figure 4 FIG. 6 is a schematic diagram of a right body structure; wherein (a) is a front view and (b) is a left view;

[0030] Figure 5 FIG. 7 is a schematic diagram of a locking wheel structure;

[0031] Figure 6 FIG. 8 is a combined schematic diagram of a quick-release bolt and a quick-release nut;

[0032] Figure 7 The schematic diagram of the fast-assembled light rod anti-falling bearing device being stuck in the light rod installation state;

[0033] Figure 8 The schematic diagram of the locking wheel being stuck in the light rod;

[0034] Figure 9 The schematic diagram of the working state of the fast-assembled light rod anti-falling bearing device when the anti-collision distance is adjusted;

[0035] Figure 10 The schematic diagram of the installation position of the fast-assembled light rod anti-falling bearing device on site;

[0036] Figure 11 The working state schematic diagram of the fast-assembled light rod anti-falling bearing device. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with specific examples.

[0038] As shown in Figures 1-11 A fast-assembled light rod anti-falling bearing device, comprising a pin shaft 1, a left main body 2, a right main body 3, a locking wheel 5, a limiting screw 6, an upper pressing plate 7, a running knot nut 8 and a running knot bolt 9;

[0039] The left main body 2 comprises an ear seat a10, an anti-falling plate a11 and a mounting seat a12;

[0040] Two ear seats a10 are arranged on the upper end of the anti-falling plate a11, and two mounting seats a12 are arranged on the lower end of the anti-falling plate a11;

[0041] Mounting openings a13 are arranged between the two ear seats a10, and mounting openings b14 are arranged between the two mounting seats a12;

[0042] Pin holes 15 are arranged on the two mounting seats a12;

[0043] The anti-falling plate a11 is provided with an inclined groove a16 and a left clamping opening 17;

[0044] The side wall of the inclined groove a16 is provided with a slide a18 for mounting the locking wheel 5, and the slide a18 is arranged obliquely;

[0045] The right main body 3 comprises an ear seat b19, an anti-falling plate b20 and a mounting seat b21;

[0046] The ear seat b19 is arranged on the upper end of the anti-falling plate b20, and the mounting seat b21 is arranged on the lower end of the anti-falling plate b20;

[0047] Mounting openings c29 are arranged between the two mounting seats b20;

[0048] The anti-falling plate b20 is provided with a bevel groove b22 and a right socket 23.

[0049] The sidewall of the bevel groove b22 is provided with a slide b24 for installing a locking wheel 5, and the slide b24 is arranged obliquely.

[0050] The ear seat a10 and the ear seat b19 are both provided with a mounting hole 25.

[0051] The ear seat b19 is arranged in the mounting port a13 between the two ear seats a10, and the pin shaft 1 is inserted into the mounting hole 25 to connect the left body 2 and the right body 3 into an opening and closing structure.

[0052] The snap bolt 9 is provided with a mounting head 27 at one end, and a circular hole is arranged on the mounting head 27, and the other end is a cylindrical screw rod.

[0053] The mounting head 27 is arranged in the mounting port b14 of the left body 2, and the mounting head 27 is connected to the mounting seat a12 through a connecting pin.

[0054] The cylindrical screw rod of the snap bolt 9 is clamped in the mounting port c29, and the snap nut 8 is screwed on the cylindrical screw rod.

[0055] The locking wheel 5 is arranged in the bevel groove a16 through the slide a18.

[0056] The locking wheel 5 is arranged in the bevel groove b22 through the slide b24.

[0057] The anti-falling plate a11 and the anti-falling plate b20 are provided with screw holes for installing limit screws 6, and the limit screws 6 are used for positioning the locking wheel 5.

[0058] The wheel surface of the locking wheel 5 is arc-shaped, and the wheel surface of the locking wheel 5 is attached to the polished rod 26.

[0059] The upper end surface of the anti-falling plate a11 and the anti-falling plate b20 is provided with a concave assembly port 28, and the upper pressing plate 7 is arranged on the assembly port 28. The upper pressing plate 7 is locked on the anti-falling plate a11 and the anti-falling plate b20 through the pressing plate screw 4, which is used to prevent the locking wheel 5 from falling out.

[0060] The working process of the quick-mounting polished rod anti-falling bearing device: the position of the quick-mounting polished rod anti-falling bearing device on the polished rod 26 can be adjusted arbitrarily; the quick-mounting polished rod anti-falling bearing device is arranged at a distance of 300mm-250mm from the polished rod sealing box during the downstroke of the pumping unit.

[0061] The left body 2 and the right body 3 are connected at one end by the shaft pin 1, the polished rod 26 is clamped in the anti-disconnection locking port, and then the left body 2 and the right body 3 are connected by the slip bolt 9 and the slip nut 8; the locking wheel 5 is wedged and extruded along the left and right bodies to press the polished rod 26, and the locking wheel 5 is supported by the limiting screw 6 and is tightly installed on the polished rod 26.

[0062] When it is necessary to readjust the anti-collision distance, first loosen the slip nut 8 to disengage the quick-mounting polished rod anti-falling support device from the polished rod 26; separate the left body 2 and the right body 3 so that the quick-mounting polished rod anti-falling support device can slide up and down on the polished rod 26 at will, and the position of the quick-mounting polished rod anti-falling support device is readjusted.

[0063] The quick-mounting polished rod anti-falling support device is pre-tightened on the polished rod 26 when it is installed, when the upper polished rod 26 is disconnected, the quick-mounting polished rod anti-falling support device pre-tightened on the polished rod 26 falls together with the disconnected polished rod and the sucker rod string in the oil well, when the quick-mounting polished rod anti-falling support device collides with the polished rod sealing box, the inclined groove in the left body 2 and the right body 3 will further extrude the locking wheel 5 to make it further lock the polished rod 26, which prevents the polished rod 26 and the sucker rod string in the oil well from continuing to slide down, and the purpose of disconnecting protection is achieved.

[0064] Although the present application has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application are within the scope of the present application.

Claims

1. A quick-installation bare pole fall protection device, characterized in that: It includes a left main body, a right main body, a pin, a locking wheel, a swivel nut, and a swivel bolt; one end of the left main body and one end of the right main body are connected together by the pin to form an openable structure. The left and right main bodies are fastened to the polished rod of the pumping unit. The locking wheel is placed between the left main body and the polished rod and between the right main body and the polished rod; the head of the swivel bolt is rotatably connected to the other end of the left main body, and the tail of the swivel bolt is engaged with the other end of the right main body. The swivel nut is screwed onto the tail of the swivel bolt to clamp the left and right main bodies onto the polished rod. The left main body includes an ear seat a, a fall protection plate a, and a mounting base a; Two ear-shaped seats a are disposed at the upper end of the fall arresting plate a, and two mounting seats a are disposed at the lower end of the fall arresting plate a; an installation port a is provided between the two ear-shaped seats a, and an installation port b is provided between the two mounting seats a; both of the mounting seats a are provided with through holes. The fall arrestor plate a has a left latch and a sloping groove a on the side facing the right main body. The left latch is arc-shaped and used to cooperate with the light rod for installation. The sloping groove a is horizontally connected to the left latch and vertically extends from the upper end face of the fall arrestor plate a to the bottom face of the fall arrestor plate a. The inner wall of the sloping groove a is sloping, and the sloping groove a is set in a way that is wider at the top and narrower at the bottom from the upper end face of the fall arrestor plate a to the bottom face of the fall arrestor plate a. Slide rails a are provided on the two side walls of the sloping groove a, and the slide rails a are inclined and parallel to the sloping surface of the sloping groove a. The right main body includes an ear seat b, a fall arrestor b, and a mounting base b; The ear seat b is disposed at the upper end of the fall arrestor b, and the mounting seat b is disposed at the lower end of the fall arrestor b; an installation opening c is provided between the two mounting seats b. The fall arrestor b has a right latch and a sloping groove b on the side facing the left main body. The right latch is arc-shaped and used to cooperate with the light rod for installation. The sloping groove b is connected and penetrates the right latch laterally and extends from the upper end face of the fall arrestor b to the bottom face of the fall arrestor b longitudinally. The inner wall of the sloping groove b is sloping and is set in a way that is wider at the top and narrower at the bottom from the upper end face of the fall arrestor b to the bottom face of the fall arrestor b. Slides b are provided on the two side walls of the sloping groove b, and the slides b are set at an inclination parallel to the sloping surface of the sloping groove b. Both ear seat a and ear seat b are provided with mounting holes; ear seat b is placed in the mounting opening a between the two ear seats a, and the pin is inserted into the mounting hole to connect the left main body and the right main body to form an openable structure.

2. The quick-installation bare pole anti-fall support device according to claim 1, characterized in that: The locking wheel has a concave arc shape on its surface to fit against the guide rod; the locking wheel has a convex shaft on each side, and the convex shaft is placed in slide a or slide b.

3. The quick-installation bare pole anti-fall support device according to claim 1, characterized in that: The head of the swivel bolt is configured as an installation head, and the installation head has a round hole. The tail of the swivel bolt is a cylindrical screw. The installation head is set in the installation port b of the left main body. The installation head is connected to the mounting seat a by inserting a connecting pin into the through hole and the round hole. The cylindrical screw of the swivel bolt is fitted into the installation port c. The swivel nut is screwed onto the cylindrical screw to clamp the left and right main bodies onto the smooth rod.

4. The quick-installation bare pole anti-fall support device according to claim 2, characterized in that: The fall arrestor plate a and fall arrestor plate b are provided with screw holes for installing limit screws; when the locking wheel is installed, the limit screws initially position the locking wheel in the inclined groove a or inclined groove b.

5. The quick-installation bare pole anti-fall support device according to claim 1, characterized in that: Both the upper end faces of the fall arrestor plate a and fall arrestor plate b are provided with recessed mounting openings. An upper pressure plate is provided on the mounting openings, and the upper pressure plate is locked onto the fall arrestor plate a and fall arrestor plate b by clamping screws to prevent the locking wheel from coming out.

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