An electrically powered slip

Abstract

A kind of electric slips, including main body, lifting electric cylinder, balance beam, slip body, tooth plate carrier and safety mechanism, lifting electric cylinder and safety mechanism are arranged inside the main body, the piston rod end of the lifting electric cylinder is connected with balance beam, the balance beam is connected with slip body by connecting rod, tooth plate carrier is detachably arranged on the slip body, the safety mechanism includes safety base, safety lever and safety electric cylinder, the safety base is fixedly arranged on the main body, the safety lever is rotatably arranged on the safety base, the safety electric cylinder is arranged at one end of the safety lever.The present application solves the problem of multiple pipelines existing in the field of pneumatic or hydraulic control mode, through the locking setting on the slip body and tooth plate carrier, avoid the accidental tooth plate falling caused by misoperation, and the replacement of tooth plate carrier can be more simple by means of identification.

Description

Technical Field

[0001] This invention relates to the field of oil drilling equipment, and more particularly to an electric slip. Background Technology

[0002] In existing technologies, drilling slips are controlled and driven pneumatically or hydraulically, resulting in numerous external pipelines on site and a lack of safety. During actual drilling operations, slips sometimes need to be removed according to on-site process requirements, making pipeline disassembly extremely inconvenient, and unclear markings can easily lead to confusion during assembly and disassembly. Furthermore, when drilling tool specifications need to be changed on-site, the slip body or die plate needs to be replaced. Relying entirely on experience to select the correct slip body or die plate specifications can easily lead to mismatches, causing assembly difficulties and significantly impacting on-site operational efficiency.

[0003] Therefore, to address the above shortcomings, it is necessary to effectively innovate existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide an electric slip driven by a four-cylinder slip body, which solves the problem of numerous field pipelines that are inevitable when using pneumatic or hydraulic control methods. Through the locking settings on the slip body and the jaw plate carrier, the accidental detachment of the jaw plate that may be caused by misoperation is avoided, and the jaw plate carrier can be replaced more easily by directly using the markings.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electric locking slip includes a main body, a lifting cylinder, a balance beam, a locking slip body, a jaw plate carrier, and a safety mechanism. The lifting cylinder and safety mechanism are disposed inside the main body. The piston rod end of the lifting cylinder is connected to the balance beam, which is connected to the locking slip body via a connecting rod. The jaw plate carrier is detachably mounted on the locking slip body. In operation, the lifting cylinder drives the balance beam to move up and down, which in turn drives the connecting rod, causing the locking slip body to move up and down. The locking slip body moves up and down along the conical surface of the main body, ultimately achieving the purpose of locking and releasing the tubing column. The safety mechanism includes a safety base, a safety lever, and a safety cylinder. The safety base is fixedly mounted on the main body, the safety lever is rotatably mounted on the safety base, and the safety cylinder is mounted at one end of the safety lever.

[0007] Accordingly, four lifting cylinders are provided, and the four lifting cylinders are symmetrically and evenly distributed.

[0008] Correspondingly, the locking body is connected by a connecting pin, which includes an upper connecting pin and a lower connecting pin, forming a double hinge structure, making the up and down movement of the locking body smoother and more natural, and less prone to jamming;

[0009] Correspondingly, the inner side of the slip body is provided with a positioning block, and the dental plate carrier is correspondingly provided with a dovetail groove, the dental plate carrier is clamped on the positioning block through the dovetail groove, and the circumferential fixing of the dental plate carrier is realized;

[0010] Correspondingly, the first positioning hole is arranged on the slip body, the second positioning hole corresponding to the first positioning hole is arranged on the dental plate carrier, a positioning sleeve is arranged on the first positioning hole in an extending manner, a limiting hole is arranged on the positioning sleeve, a positioning pin penetrating the positioning sleeve is arranged in the positioning sleeve in a matched manner with the positioning sleeve, and a plug pin can be inserted into the positioning sleeve through the limiting hole. The axial fixing of the dental plate carrier and the slip body is realized through the positioning pin, and the plug pin can prevent the positioning pin from being withdrawn from the second positioning hole during use;

[0011] Correspondingly, the positioning pin is provided with a clamping head, and the clamping head protrudes from the limiting hole and is used for preventing the positioning pin from being withdrawn from the positioning sleeve;

[0012] Correspondingly, the upper end of the dental plate groove of the dental plate carrier is provided with a specification identification block, and the specification of the carrier assembly can be directly identified through the specification identification block;

[0013] Correspondingly, the piston rod end of the safety cylinder is connected with a safety lever, the safety cylinder is in a power-off state, the piston rod is retracted, and the safety lever is inclined to one side of the balance beam. If the lifting cylinder is powered off at this time, the balance beam is stopped by the safety lever after descending to the safety lever, so that the balance beam is prevented from continuing to descend and causing the situation of sticking and drilling, and the mechanical safety function is realized. When the lifting cylinder needs to drive the balance beam to descend, the safety cylinder is powered on, the piston rod is extended, the safety lever is pulled back, and the balance beam can descend.

[0014] Correspondingly, the drilling slip further comprises an ascending stroke switch and a descending stroke switch, which are respectively used for sensing and feeding back the ascending and descending positions of the slip body, so as to facilitate remote control of the driller.

[0015] The beneficial effects of the present application are:

[0016] 1. By adopting the driving mode of the electric cylinder, the problem of too many pipelines on the site caused by the pneumatic or hydraulic control mode is solved;

[0017] 2. By arranging the safety mechanism, the phenomenon of sticking and drilling caused by the downward movement of the slip body due to the single locking failure after the accidental power-off of the lifting cylinder during the drilling process can be effectively prevented;

[0018] 3. The specification identification block is arranged on the dental plate carrier, and the specification of the dental plate carrier can be directly identified through the specification identification block;

[0019] 4) The tooth plate carrier is fixed on the slip body through the positioning block, the axial fixation of the tooth plate carrier is realized, the axial fixation of the tooth plate carrier is realized through the positioning pin and the plug-in pin, on the one hand, the tooth plate carrier can be replaced without installing auxiliary tools or disassembling any parts on site, on the other hand, the installation mode of the tooth plate carrier has double insurance, and the safety of installation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall structure schematic diagram of the electric slip of an embodiment of the present application;

[0021] Figure 2 It is the cross-sectional structure schematic diagram of the electric slip of an embodiment of the present application;

[0022] Figure 3 It is the structure schematic diagram of the tooth plate carrier installed on the slip body;

[0023] Figure 4 It is the structure schematic diagram of the tooth plate carrier disassembled from the slip body;

[0024] Figure 5 It is the structure schematic diagram of the safety mechanism;

[0025] In the drawing:

[0026] 1, main body;

[0027] 2, lifting electric cylinder;

[0028] 3, balance beam; 31, connecting rod;

[0029] 4, slip body; 41, positioning sleeve; 42, connecting pin;

[0030] 5, tooth plate carrier; 51, specification identification block; 52, dovetail groove; 53, second positioning hole;

[0031] 61, safety base; 62, safety lever; 63, safety electric cylinder;

[0032] 7, positioning pin; 71, clamping head;

[0033] 8, plug-in pin. DETAILED DESCRIPTION

[0034] As Figure 1 , 2 shown, in an embodiment of the present application, the electric slip includes a main body 1, a lifting electric cylinder 2, a balance beam 3, a slip body 4, a tooth plate carrier 5 and a safety mechanism, the lifting electric cylinder 2 and the safety mechanism are arranged in the main body 1;

[0035] In this embodiment, four lifting electric cylinders 2 are provided, and the four lifting electric cylinders 2 are symmetrically and uniformly distributed, the piston rod end of the lifting electric cylinder 2 is connected with the balance beam 3, the balance beam 3 is connected with the slip body 4 through the connecting rod 31, the slip body 4 is connected through the connecting pin 42, the connecting pin 42 includes an upper connecting pin and a lower connecting pin, forming a double hinge structure, so that the up and down movement of the slip body 4 is more smooth and natural, and it is not easy to be stuck, and the tooth plate carrier 5 is detachably arranged on the slip body 4;

[0036] For example, as shown in Figure 3 、 4 , the inside of the slip body 4 is provided with a positioning block, and the tooth plate carrier 5 is correspondingly provided with a dovetail groove 52, the tooth plate carrier 5 is clamped on the positioning block through the dovetail groove 52, and the circumferential fixing of the tooth plate carrier 5 is realized; the slip body 4 is provided with a first positioning hole, the tooth plate carrier 5 is provided with a second positioning hole 53 corresponding to the first positioning hole, a positioning sleeve 41 is arranged on the first positioning hole, the positioning sleeve 41 is provided with a limiting hole, a positioning pin 7 (the positioning pin 7 is provided with a clamping head 71, the clamping head 71 protrudes from the limiting hole, which is used to avoid the positioning pin 7 from being pulled out of the positioning sleeve 41) and a plug pin 8 which can be inserted into the positioning sleeve 41 through the limiting hole are arranged in the positioning sleeve 41, and the axial fixing of the tooth plate carrier 5 and the slip body 4 is realized through the positioning pin 7. In addition, the upper end of the tooth plate groove of the tooth plate carrier 5 is also provided with a specification identification block 51, and the specification of the tooth plate carrier 5 can be directly identified through the specification identification block 51;

[0037] As shown in Figure 5 , the safety mechanism includes a safety base 61, a safety lever 62 and a safety electric cylinder 63, the safety base 61 is fixedly arranged on the main body 1, the safety lever 62 is rotatably arranged on the safety base 61, and the safety electric cylinder 63 is arranged at one end of the safety lever 62;

[0038] In addition, in order to limit the stroke distance of the upward movement and the downward movement of the balance beam 3 and the slip body 4, an upward stroke switch and a downward stroke switch are further arranged on the electric slip, and the working state of the lifting electric cylinder 2 can be remotely controlled through the feedback of the stroke switch.

[0039] According to the electric slip described in the embodiment, the following embodiments can be obtained:

[0040] Under the driving of the lifting electric cylinder 2, the balance beam 3 rises, and at this time, the safety electric cylinder 63 in the safety mechanism is in a power-off state, the piston rod end of the safety electric cylinder 63 is retracted, the safety lever 62 is inclined to one side of the balance beam 3, and is attached to the side end of the balance beam 3, which does not hinder the upward movement of the balance beam 3, and as the balance beam 3 continues to rise, the safety lever 62 is further inclined below the balance beam 3, which loses the support of the balance beam 3;

[0041] When the elevator body 4 rises to the sensing position of the ascending stroke switch, the lifting electric cylinder 2 acts, stops the continuous rising, keeps the elevator body 4 at the current position, at this time, if the lifting electric cylinder 2 is powered off or other unexpected situation occurs, the balance beam 3 goes down to the bumper lever 62 and is stopped by the bumper lever 62, avoiding the continuous descending to cause the stuck drill situation, playing the mechanical insurance role, if the balance beam 3 needs to go down under the normal condition, the bumper electric cylinder 63 is powered on, the piston rod extends, thereby pulling back the bumper lever 62, so that the balance beam 3 can go down;

[0042] When the tooth plate carrier 5 needs to be disassembled, the bolt 8 is first taken out of the limiting hole, the positioning pin 7 is withdrawn from the second positioning hole 53, the axial fixing effect of the elevator body 4 on the tooth plate carrier 5 is released, the tooth plate carrier 5 is pulled up again, the positioning block slides out of the dovetail groove 52, and the tooth plate carrier 5 is disassembled.

[0043] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An electrically powered slip comprising a body, a lifting cylinder, a balance beam, a slip body, a pad carrier and a safety mechanism, characterized in that, The lifting electric cylinder is connected with a balance beam at the piston rod end, the balance beam is connected with the slip body through a connecting rod, a tooth plate carrier is detachably arranged on the slip body, the safety mechanism comprises a safety base, a safety lever and a safety electric cylinder, the safety base is fixedly arranged on the main body, the safety lever is rotatably arranged on the safety base, and the safety electric cylinder is arranged at one end of the safety lever; The first positioning hole is arranged on the slip body, the second positioning hole corresponding to the first positioning hole is arranged on the tooth plate carrier, the positioning sleeve is arranged on the first positioning hole, the limiting hole is arranged on the positioning sleeve, the positioning pin is arranged in the positioning sleeve, the insertion pin is inserted into the positioning sleeve through the limiting hole, the positioning pin is provided with a clamping head, and the clamping head protrudes out of the limiting hole; The inside of the slip body is provided with a positioning block, and the tooth plate carrier is correspondingly provided with a dovetail groove, the tooth plate carrier is clamped on the positioning block through the dovetail groove, and the circumferential fixation of the tooth plate carrier is realized; The electric slip also comprises an ascending stroke switch and a descending stroke switch, which are respectively used for sensing and feeding back the ascending and descending positions of the slip body, so that the driller can remotely control.

2. The motorized slip according to claim 1, wherein, The lifting electric cylinder is arranged in four, and the four lifting electric cylinders are symmetrically and uniformly arranged.

3. The motorized slip according to claim 1, wherein, The slip body is connected through a connecting pin, the connecting pin comprises an upper connecting pin and a lower connecting pin, and a double-hinged structure is formed.

4. The motorized slip according to claim 1, wherein, The tooth plate groove of the tooth plate carrier is provided with a specification identification block at the upper end.

5. The motorized slip according to claim 1, wherein, The piston rod end of the safety electric cylinder is connected with the safety lever.

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