Large-size indentation-free casing tongs

Abstract

The utility model relates to the field of oil and gas reservoir yield increase, in particular to a large-size indentation-free casing tong which comprises a casing tong body and three adjusting mechanisms, each adjusting mechanism comprises a mounting box, a sliding assembly, a connecting arm, two locking components and an auxiliary plate, the mounting box is fixedly connected with the casing tong body and located at one end of the casing tong body, and the sliding assembly is fixedly connected with the connecting arm. The sliding assembly is detachably connected with the sliding groove and located at one end of the sliding groove, one end of the connecting arm is fixedly connected with the sliding assembly and located at one end of the sliding assembly, the other end of the connecting arm is fixedly connected with the auxiliary plate and located at one end of the auxiliary plate, and one ends of the two locking components are detachably connected with the sliding assembly and symmetrically arranged at the upper end of the sliding assembly. And the other end of each locking part is in sliding connection with the corresponding lock hole and is positioned at one end of the corresponding lock hole, so that the problem of inconvenience in use due to the fact that jaw plates with different standards need to be replaced for clamping sleeves with different specifications is solved.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas reservoir production increase, in particular to a large-size non-indentation casing clamp. Background Art

[0002] At present, the process of pulling out and unscrewing the casing in domestic pipe drilling construction is time-consuming and labor-intensive. Due to the lack of special casing unscrewing equipment, the labor intensity of construction workers is high. In particular, the unscrewing of large straight diameter casing is quite difficult, and even cannot be successfully unscrewed manually.

[0003] In order to solve the above problems, the prior art CN2037023038U provides a casing clamp, including an upper clamping rotary body, a lower clamping rotary body, an oil cylinder and a connecting rod. The outer wall of the lower clamping rotary body is provided with an oil cylinder. The upper clamping rotary body includes an upper clamp body and an upper jaw plate frame, and the upper jaw plate frame is arranged in the upper clamp body. The lower clamping rotary body includes a lower clamp body and a lower jaw plate frame, and the lower jaw plate frame is arranged in the lower clamp body. The upper and lower clamping rotary bodies both include a roller climbing mechanism. The roller climbing mechanism The slope mechanism includes a slope plate, a roller, a jaw plate and a tooth plate. The upper pliers body and the lower pliers body are both provided with a slope plate and a positioning plate. The upper jaw plate frame and the lower jaw plate frame are both provided with rollers, jaw plates and pin holes. The bottom of the upper jaw plate frame is provided with an arc guide groove. The lower end of the connecting rod is provided on the positioning plate of the lower pliers body, and the upper end of the connecting rod is provided in the arc guide groove of the upper jaw plate frame. The positioning pin is provided on the positioning plate of the upper pliers body. The casing pliers of the utility model have uniform force when unscrewing and unscrewing, and are convenient and labor-saving.

[0004] However, in the above-mentioned prior art, different standard jaw plates need to be replaced to clamp sleeves of different specifications, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a large-size non-indentation casing pliers, which solves the technical problem in the prior art that different standard jaw plates need to be replaced to achieve clamping of casings of different specifications, which is inconvenient to use.

[0006] To achieve the above-mentioned purpose, the utility model adopts a large-size non-indentation casing pliers, including a casing pliers body and three adjustment mechanisms, each of the adjustment mechanisms includes a mounting box, a sliding assembly, a connecting arm, two locking components and an auxiliary plate, the mounting box has a slide groove and a plurality of locking holes, the slide groove and the plurality of locking holes are respectively arranged on the mounting box, the mounting box is fixedly connected to the casing pliers body and is located at one end of the casing pliers body, the sliding assembly is detachably connected to the slide groove and is located at one end of the slide groove, one end of the connecting arm is fixedly connected to the sliding assembly and is located at one end of the sliding assembly, the other end of the connecting arm is fixedly connected to the auxiliary plate and is located at one end of the auxiliary plate, one end of the two locking components is detachably connected to the sliding assembly and is symmetrically arranged at the upper end of the sliding assembly, the other end of each locking component is slidably connected to the corresponding lock hole and is located at one end of the corresponding lock hole.

[0007] Among them, the sliding assembly includes a slider, a sliding rod and a spring. The sliding rod is fixedly connected to the sliding groove and is located at one end of the sliding groove. The slider is slidingly connected to the sliding rod and is located inside the sliding rod. The springs are fixedly connected to the slider and the sliding rod and are located at one end of the slider and the sliding rod.

[0008] One end of the arm body is fixedly connected to the slider and is located at one end of the slider, the other end of the arm body is slidably connected to the installation box and is located at one end of the installation box, and the connecting rod is fixedly connected to the arm body and is located at one end of the arm body.

[0009] Wherein, each locking component includes a support plate, a bolt, a screw and a locking rod, the bolt is fixedly connected to the support plate and is located at one end of the support plate, the screw cooperates with the bolt, and the locking rod is fixedly connected to the screw and is located at one end of the screw.

[0010] Wherein, the auxiliary plate includes a jaw plate and a sponge pad, and the sponge pad is fixedly connected to the jaw plate and is located at one end of the jaw plate.

[0011] The utility model provides a large-size non-indentation casing pliers, the mounting box has a slide groove and a plurality of lock holes, the slide groove and the plurality of lock holes are respectively arranged on the mounting box, the mounting box is fixedly connected to the casing pliers body and is located at one end of the casing pliers body, the sliding assembly is detachably connected to the slide groove and is located at one end of the slide groove, one end of the connecting arm is fixedly connected to the sliding assembly and is located at one end of the sliding assembly, the other end of the connecting arm is fixedly connected to the auxiliary plate and is located at one end of the auxiliary plate, one end of the two locking components is detachably connected to the sliding assembly and is symmetrically arranged on the sliding The upper end of the movable assembly, the other end of each locking component is slidably connected to the corresponding lock hole and is located at one end of the corresponding lock hole, the sliding assembly is released from the mounting box through the two locking components, and then one end of the sliding assembly is pushed, the sliding assembly drives the connecting arm to move on the slide groove, and the connecting arm drives the auxiliary plate to move. After the adjustment is completed, the sliding assembly is fixed by matching the two lock holes corresponding to the two locking components. This method can effectively solve the problem that different standards of jaw plates need to be replaced to achieve clamping for sleeves of different specifications, which is inconvenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 The utility model is a structural schematic diagram of a large-size non-indentation casing pliers.

[0014] Figure 2 It is a side view of the installation box of the present utility model.

[0015] Figure 3 This utility model Figure 2 Structural cross-sectional view of line AA.

[0016] 101-casing clamp body, 102-mounting box, 103-slide groove, 104-locking hole, 105-slider, 106-slide rod, 107-spring, 108-arm body, 109-connecting rod, 110-support plate, 111-bolt, 112-screw, 113-locking rod, 114-jaw plate, 115-sponge pad. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] See also Figures 1 to 3 ,in Figure 1 This is a structural diagram of a large-size non-indentation casing pliers of the utility model. Figure 2 This is a side view of the installation box of the utility model. Figure 3 This utility model Figure 2 Structural cross-sectional view of line AA.

[0019] The utility model provides a large-size non-indentation casing pliers, including a casing pliers body 101, a mounting box 102, a slider 105, a slide rod 106, a spring 107, an arm body 108, a connecting rod 109, a support plate 110, a bolt 111, a screw 112, a locking rod 113, a jaw plate 114 and a sponge pad 115. The above solution solves the problem that when clamping casings of different specifications, it is necessary to replace jaw plates 114 of different standards to achieve clamping, which is inconvenient to use.

[0020] According to this specific embodiment, the mounting box 102 has a slide groove 103 and a plurality of lock holes 104, and the slide groove 103 and the plurality of lock holes 104 are respectively arranged on the mounting box 102, and the mounting box 102 is fixedly connected to the casing clamp body 101 and is located at one end of the casing clamp body 101, and the sliding assembly is detachably connected to the slide groove 103 and is located at one end of the slide groove 103, one end of the connecting arm is fixedly connected to the sliding assembly and is located at one end of the sliding assembly, and the other end of the connecting arm is fixedly connected to the auxiliary plate and is located at one end of the auxiliary plate, and the two locking parts One end of the component is detachably connected to the sliding assembly and is symmetrically arranged at the upper end of the sliding assembly. The other end of each locking component is slidably connected to the corresponding lock hole 104 and is located at one end of the corresponding lock hole 104. When adjustment is required, the sliding assembly is released from the mounting box 102 through the two locking components, and then one end of the sliding assembly is pushed. The sliding assembly drives the connecting arm to move on the slide groove 103, and the connecting arm drives the auxiliary plate to move. After the adjustment is completed, the sliding assembly is fixed by matching the two lock holes 104 corresponding to the two locking components.

[0021] In which, the sliding assembly includes a slider 105, a sliding rod 106 and a spring 107. The sliding rod 106 is fixedly connected to the sliding groove 103 and is located at one end of the sliding groove 103. The slider 105 is slidingly connected to the sliding rod 106 and is located inside the sliding rod 106. The spring 107 is fixedly connected to the slider 105 and the sliding rod 106 and is located at one end of the slider 105 and the sliding rod 106. When the slider 105 is sliding, the slider 105 slides in the sliding groove 103 through the sliding rod 106, and the slider 105 squeezes the spring 107 at the same time.

[0022] Secondly, one end of the arm body 108 is fixedly connected to the slider 105 and is located at one end of the slider 105. The other end of the arm body 108 is slidably connected to the installation box 102 and is located at one end of the installation box 102. The connecting rod 109 is fixedly connected to the arm body 108 and is located at one end of the arm body 108. The slider 105 drives the arm body 108 to slide on the installation box 102, and the arm body 108 drives the connecting rod 109 to move.

[0023] At the same time, each locking component includes a support plate 110, a bolt 111, a screw 112 and a locking rod 113. The bolt 111 is fixedly connected to the support plate 110 and is located at one end of the support plate 110. The screw 112 cooperates with the bolt 111. The locking rod 113 is fixedly connected to the screw 112 and is located at one end of the screw 112. The support plate 110 is used to install the bolt 111. The screw 112 cooperates with the bolt 111, and the locking rod 113 is installed on the screw 112.

[0024] In addition, the auxiliary plate includes a jaw plate 114 and a sponge pad 115. The sponge pad 115 is fixedly connected to the jaw plate 114 and is located at one end of the jaw plate 114. The sponge pad 115 is installed on the jaw plate 114. The sponge pad 115 is used as a protective sleeve.

[0025] When using a large-size non-indentation casing pliers of this embodiment, the two screws 112 are rotated, and the two screws 112 drive the two locking rods 113 to move out of the corresponding two locking holes 104 through the two bolts 111, and then push the slider 105, and the slider 105 slides in the sliding groove 103 through the sliding rod 106. The slider 105 squeezes the spring 107 at the same time, and the slider 105 drives the arm 108 to move, and the arm 108 drives the jaw plate 114 to move through the connecting rod 109. After the adjustment is completed, the two screws 112 are rotated in the opposite direction, and the two screws 112 drive the two locking rods 113 to insert into the corresponding two locking holes 104 through the two bolts 111, thereby fixing the slider 105 on the mounting box 102, so as to facilitate the adjustment of the jaw plate 114, so that two casings of different specifications can be clamped.

[0026] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A large-size non-indentation casing pliers, comprising a casing pliers body, characterized in that: The cam is fixedly mounted on a support frame, and the cam is secured to a position detachable from the support frame by means of a latch, and the cam is secured to a position detachable from the support frame by means of a latch.

2. The large-size non-marking casing pliers according to claim 1, characterized in that: The sliding assembly includes a slider, a sliding rod and a spring. The sliding rod is fixedly connected to the sliding groove and is located at one end of the sliding groove. The slider is slidably connected to the sliding rod and is located inside the sliding rod. The springs are fixedly connected to the slider and the sliding rod and are located at one end of the slider and the sliding rod.

3. The large-size non-marking casing pliers according to claim 2, characterized in that: The connecting arm includes an arm body and a connecting rod, one end of the arm body is fixedly connected to the slider and is located at one end of the slider, the other end of the arm body is slidably connected to the installation box and is located at one end of the installation box, and the connecting rod is fixedly connected to the arm body and is located at one end of the arm body.

4. The large-size non-marking casing pliers according to claim 3, characterized in that: Each locking component includes a support plate, a bolt, a screw and a locking rod, wherein the bolt is fixedly connected to the support plate and is located at one end of the support plate, the screw cooperates with the bolt, and the locking rod is fixedly connected to the screw and is located at one end of the screw.

5. The large-size non-marking casing pliers according to claim 4, characterized in that: The auxiliary plate includes a jaw plate and a sponge pad. The sponge pad is fixedly connected to the jaw plate and is located at one end of the jaw plate.

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