Combined clamp

Abstract

The invention relates to a combined clamp which comprises a supporting column, two clamp assemblies and a pipe detection assembly. The two clamp assemblies are installed at the two ends of the supporting column, and the pipe detection assembly is installed on the supporting column. The clamp assembly comprises a support, a first clamping jaw, a second clamping jaw, a driver, a transmission assembly and a positioning assembly. The support is installed at the end of the supporting column, the first clamping jaw and the second clamping jaw are rotatably installed on the support, the driver and the transmission assembly are installed in the support, the transmission assembly is connected with the first clamping jaw and the second clamping jaw, the positioning assembly is installed on the support in a front-back sliding mode, and the positioning assembly is connected with the transmission assembly. The pipe detection assembly is connected with the driver. The combined type clamp has the beneficial effects that the combined type clamp can clamp and center pipes of different specifications, the application range is wide, the operation efficiency can be ensured, and the clamping stability and safety are higher through the two clamp assemblies arranged in parallel.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas drilling, and in particular to a composite clamp. Background Art

[0002] Pipe tools are important tools in oil and gas drilling. Pipe tools are usually divided into: drill pipes, drill collars and casings. During drilling operations, pipe tools are taken and placed by pliers, which are divided into lifting pliers and clamps. Lifting pliers usually lift the pipe coupling (drill pipe directly lifts the female coupling, while drill collars and casing are connected to other lifting couplings) to lift the pipe to achieve pipe tool placement; clamps clamp the outer diameter of the pipe body to achieve pipe tool placement. The conventional pipe diameter range of pipe tools is 23 / 8”~20”. Due to the different positions of lifting pliers and clamps on pipe tools, traditional lifting pliers can be used for pipe tools with conventional pipe diameters, but existing clamps cannot be used for all conventional pipe tools. During the operation, the clamps need to be replaced when clamping pipe tools of different pipe diameters, which affects the operation efficiency.

[0003] Therefore, there is an urgent need for a composite clamp that can be applied to conventional range of pipes to improve working efficiency. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a composite clamp, which solves the technical problem that the prior art cannot be applied to pipes of all conventional diameters, thus affecting the working efficiency.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] The invention provides a composite clamp, comprising a pillar, two clamp assemblies and a pipe detection component; the two clamp assemblies are installed at both ends of the pillar, and the pipe detection component is installed on the pillar; the clamp assembly comprises a support, a first clamp, a second clamp, a driver, a transmission component and a positioning component; the support is installed at the end of the pillar, the first clamp and the second clamp are rotatably installed on the support, the driver and the transmission component are installed in the support, the transmission component is connected with the first clamp and the second clamp respectively, the positioning component is slidably installed on the support, and the positioning component is connected with the transmission component; the pipe detection component is connected with the driver; after the pipe is in place, it abuts against the pipe detection component, and the pipe detection component starts the driver to drive the first clamp and the second clamp to rotate and clamp the pipe in a horizontal plane through the transmission component, and at the same time drives the positioning component to slide forward and abut against the pipe through the transmission component.

[0009] Optionally, the transmission assembly includes a slider and two connecting rods; the slider can be installed in the support so as to slide back and forth, and the slider is rotatably connected to the first clamping jaw and the second clamping jaw through two connecting rods in a one-to-one correspondence; the positioning assembly is connected to the slider, and the driving end of the driver is connected to the slider to drive the slider to slide back and forth, and the sliding of the slider is converted into the rotation of the first clamping jaw and the second clamping jaw in the horizontal plane through the two connecting rods; at the same time, the slider drives the positioning assembly to approach and move away from the pipe; when the first clamping jaw and the second clamping jaw clamp the pipe, the positioning assembly abuts against the pipe.

[0010] Optionally, the positioning assembly includes a positioning rod and a limiting rod; the positioning rod can be slidably installed on the support forward and backward, one end of the positioning rod is connected to the transmission assembly, and the limiting rod is installed on the other end of the positioning rod, and the positioning rod and the limiting rod are arranged in a T shape; when clamping the pipe, the driver drives the positioning rod to slide close to and abut against the outer surface of the pipe through the transmission assembly.

[0011] Optionally, the other end of the positioning rod has a clamp tooth top plate with a V-shaped cross section facing the pipe fixture.

[0012] Optionally, an elastic protective sleeve is sleeved on the positioning rod, and the elastic protective sleeve is located between the limiting rod and the support.

[0013] Optionally, the clamping parts of the first clamping jaw and the second clamping jaw are provided with arc-shaped jaw plates.

[0014] Optionally, the first clamping jaw has a first claw hook, and the second clamping jaw has two second claw hooks arranged in parallel; when clamping the pipe, the first claw hook crosses between the two second claw hooks.

[0015] Optionally, the pipe detection assembly includes a trigger door, a reset spring and a proximity switch; one end of the trigger door is rotatably mounted on the pillar, the reset spring is arranged between the trigger door and the pillar, and the proximity switch is mounted on the pillar.

[0016] Optionally, a roller for abutting against a pipe fixture is provided on the trigger door.

[0017] (III) Beneficial effects

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a composite clamp. When clamping, the composite clamp approaches the pipe, and the pipe first abuts against the pipe detection component. The drivers of the two clamp assemblies are started through the pipe detection component. The driver of each clamp assembly drives the first clamp and the second clamp to rotate and clamp the pipe in the horizontal plane through the transmission component, and at the same time drives the positioning component to slide forward and abut against the pipe through the transmission component. Each clamp assembly can clamp and center the pipe from three directions through the first clamp, the second clamp and the positioning component, that is, when the clamp assembly clamps pipes of different specifications, it always maintains the same pipe center position in a top-down perspective, ensuring stable and firm clamping and accurate clamping position when repeatedly clamping pipes of different diameters, so that the position control system of the clamp assembly can more accurately find the position of the clamped pipe. Considering that the position of the pipe entering the clamp assembly is not exactly the same each time, the positioning component can correct the deviation of the pipe and push it to a fixed clamping and positioning position during the clamping process of the clamp assembly. The whole process is smooth and fluent, and no damage is caused to the pipe wall of the pipe. Compared with the prior art, the composite clamp can clamp and center pipes of different specifications, has a wide range of applications, can ensure operating efficiency, and has higher stability and safety through the clamping of two parallel clamp assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a composite clamp in a specific embodiment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of another angle of a composite clamp in a specific embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the composite clamp clamping a pipe in a specific embodiment of the present invention;

[0023] Figure 4 is a top view of a composite clamp in a specific embodiment of the present invention clamping a pipe;

[0024] Figure 5 is a partial structural schematic diagram of a clamp assembly in a specific embodiment of the present invention;

[0025] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0026] [Description of Reference Numerals]

[0027] 1: Pillar;

[0028] 21: support; 22: first clamping jaw; 221: first claw hook; 23: second clamping jaw; 231: second claw hook; 24: driver; 25: slider; 26: connecting rod; 27: jaw plate;

[0029] 31: positioning rod; 32: limiting rod; 33: clamp tooth top plate; 34: elastic protective sleeve;

[0030] 41: trigger door; 42: proximity switch; 43: roller. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution, the exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. The "front" and "back" described herein are referred to as Figure 1 The orientation is used as a reference.

[0032] like Figure 1 and Figure 2 As shown, a specific embodiment of the present invention provides a composite clamp, including a pillar 1, two clamp assemblies and a pipe detection component; the two clamp assemblies are installed at both ends of the pillar 1, and the pipe detection component is installed on the pillar 1; the clamp assembly includes a support 21, a first clamp 22, a second clamp 23, a driver 24, a transmission component and a positioning component; the support 21 is installed at the end of the pillar 1, the first clamp 22 and the second clamp 23 are rotatably installed on the support 21, the driver 24 and the transmission component are installed in the support 21, the transmission component is connected to the first clamp 22 and the second clamp 23 respectively, the positioning component can be slidably installed on the support 21, and the positioning component is connected to the transmission component; the pipe detection component is connected to the driver 24; after the pipe is in place, it abuts against the pipe detection component, and the pipe detection component starts the driver 24 to drive the first clamp 22 and the second clamp 23 to rotate and clamp the pipe in a horizontal plane through the transmission component, and at the same time drive the positioning component to slide forward and abut against the pipe through the transmission component.

[0033] Specifically, when clamping, the composite clamp approaches the pipe, and the pipe first abuts against the pipe detection component, and the drivers 24 of the two clamp assemblies are activated through the pipe detection component. The driver 24 of each clamp assembly drives the first clamp 22 and the second clamp 23 to rotate and clamp the pipe in the horizontal plane through the transmission component, and at the same time drives the positioning component to slide forward and abut against the pipe through the transmission component. Each clamp assembly can clamp and center the pipe from three directions through the first clamp 22, the second clamp 23 and the positioning component, that is, when the clamp assembly clamps pipes of different specifications, it always maintains the same pipe center position in a top-down perspective, ensuring stable and firm clamping and accurate clamping position when repeatedly clamping pipes of different diameters, so that the position control system of the clamp assembly can more accurately find the position of the clamped pipe. And considering that the position of the pipe entering the clamp assembly is not exactly the same each time, the positioning component can correct the deviation of the pipe and push it to a fixed clamping and positioning position during the clamping process of the clamp assembly. The whole process is smooth and fluent, and will not cause damage to the pipe wall of the pipe. Compared with the prior art, the composite clamp can clamp and center pipes of different specifications, has a wide range of applications, can ensure operating efficiency, and has higher stability and safety through the clamping of two parallel clamp assemblies.

[0034] Furthermore, if Figure 1 and Figure 2 As shown, the transmission assembly includes a slider 25 and two connecting rods 26; the slider 25 is installed in the support 21 so as to slide forward and backward, and the slider 25 is rotatably connected to the first clamping jaw 22 and the second clamping jaw 23 through the two connecting rods 26 in a one-to-one correspondence; the positioning assembly is connected to the slider 25, and the driving end of the driver 24 is connected to the slider 25 to drive the slider 25 to slide forward and backward, and the sliding of the slider 25 is converted into the rotation of the first clamping jaw 22 and the second clamping jaw 23 in the horizontal plane through the two connecting rods 26; at the same time, the slider 25 drives the positioning assembly to approach and move away from the pipe; when the first clamping jaw 22 and the second clamping jaw 23 clamp the pipe, the positioning assembly abuts against the pipe.

[0035] Furthermore, if Figure 1 and Figure 4As shown, the positioning assembly includes a positioning rod 31 and a limiting rod 32; the positioning rod 31 can be slidably installed on the support 21, one end of the positioning rod 31 is connected to the transmission assembly, and the limiting rod 32 is installed on the other end of the positioning rod 31, and the positioning rod 31 and the limiting rod 32 are arranged in a T shape; when clamping the pipe, the driver 24 drives the positioning rod 31 through the transmission assembly to slide close to and abut against the outer surface of the pipe, and the positioning rod 31 can correct the deviation and push the pipe to the centering position during the movement to prevent the pipe from deviating and misaligning, and then the pipe is clamped and centered from three aspects through the end of the positioning rod 31, the first clamping jaw 22 and the second clamping jaw 23. In this specific embodiment, the other end of the positioning rod 31 is provided with a clamp tooth top plate 33 with a V-shaped cross section (horizontal cross section) and facing the pipe to ensure the stability of the pipe clamping. An elastic protective sleeve 34 is also sleeved on the positioning rod 31, and the elastic protective sleeve 34 is located between the limiting rod 32 and the support 21. When clamping, the positioning rod 31 extends from the support 21 and the elastic protective sleeve 34 stretches. When releasing the pipe, the positioning rod 31 slides back into the support 21 and the elastic protective sleeve 34 is compressed.

[0036] Furthermore, if Figure 4-Figure 6 As shown, in this specific embodiment, the first clamping jaw 22 has a first claw hook 221, and the second clamping jaw 23 has two second claw hooks 231 arranged in parallel; when clamping the pipe, the first claw hook 221 crosses between the two second claw hooks 231. The clamping parts of the first clamping jaw 22 and the second clamping jaw 23 are provided with arc-shaped jaw plates 27 to improve the clamping effect on the pipe.

[0037] Furthermore, if Figure 1 and Figure 2 As shown, the pipe detection assembly includes a trigger door 41, a proximity switch 42 and a reset spring; one end of the trigger door 41 is rotatably mounted on the pillar 1, the reset spring is arranged between the trigger door 41 and the pillar 1, and the proximity switch 42 is installed on the pillar 1. In this specific embodiment, a roller 43 for abutting the pipe is arranged on the trigger door 41 to ensure that after the pipe abuts the trigger door 41, the trigger door 41 can rotate in a vertical plane under the action of the pipe, and the trigger door 41 is reset under the action of the reset spring after the pipe leaves. Specifically, after the pipe is in place, it abuts the roller 43, so that the trigger door 41 rotates in a vertical plane close to the proximity switch 42. After reaching the trigger distance of the proximity switch 42, the proximity switch 42 sends a start signal to the drivers 24 of the two clamp assemblies, and the two clamp assembly drivers 24 are started at the same time.

[0038] The specific embodiment of the present invention provides a use of a composite clamp, in which, after the pipe is in place, it abuts against the roller 43 of the trigger door 41 of the pipe detection assembly, so that the trigger door 41 rotates in a vertical plane and approaches the proximity switch 42. After reaching the trigger distance of the proximity switch 42, the proximity switch 42 sends a start signal to the drivers 24 of the two clamp assemblies, and the two clamp assembly drivers 24 are started at the same time. The driver 24 drives the slide seat to slide forward, and the slider 25 drives the first clamp 22 and the second clamp 23 to rotate in the horizontal plane to clamp the pipe through two connecting rods 26. The positioning rod 31 is driven by the slider 25 to slide forward and abut against the outer surface of the pipe. During the clamping process, the pipe moves to the centering position under the action of the limit rod 32 to correct the deviation and push. The pipe is clamped and centered from three aspects: the top plate 33 at the end of the positioning rod 31, the first clamp 22 and the second clamp 23.

[0039] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A composite clamp, characterized in that: It comprises a support (1), two clamp assemblies and a pipe detection component; Two clamp assemblies are installed at both ends of the support (1), and the pipe detection component is installed on the support (1); The clamp assembly comprises a support (21), a first clamping jaw (22), a second clamping jaw (23), a driver (24), a transmission assembly and a positioning assembly; The support (21) is mounted on the end of the support (1); the first clamp (22) and the second clamp (23) are rotatably mounted on the support (21); the driver (24) and the transmission assembly are mounted in the support (21); the transmission assembly is respectively connected to the first clamp (22) and the second clamp (23); the positioning assembly is slidably mounted on the support (21); the positioning assembly is connected to the transmission assembly; and the pipe detection assembly is connected to the driver (24); After the pipe is in place, it abuts against the pipe detection assembly. The pipe detection assembly starts a driver (24) to drive the first clamp (22) and the second clamp (23) to rotate and clamp the pipe in a horizontal plane through the transmission assembly, and at the same time drives the positioning assembly to slide forward and abut against the pipe through the transmission assembly.

2. The composite clamp according to claim 1, characterized in that: The transmission assembly comprises a slider (25) and two connecting rods (26); The slider (25) is installed in the support (21) so as to slide forward and backward. The slider (25) is rotatably connected to the first clamping jaw (22) and the second clamping jaw (23) in a one-to-one correspondence through two connecting rods (26); the positioning assembly is connected to the slider (25), and the driving end of the driver (24) is connected to the slider (25) to drive the slider (25) to slide forward and backward. The sliding of the slider (25) is converted into the rotation of the first clamping jaw (22) and the second clamping jaw (23) in a horizontal plane through the two connecting rods (26); at the same time, the slider (25) drives the positioning assembly to approach and move away from the pipe; when the first clamping jaw (22) and the second clamping jaw (23) clamp the pipe, the positioning assembly abuts against the pipe.

3. The composite clamp according to claim 1, characterized in that: The positioning assembly comprises a positioning rod (31) and a limiting rod (32); The positioning rod (31) is slidably mounted on the support (21) forward and backward, one end of the positioning rod (31) is connected to the transmission assembly, and the limiting rod (32) is mounted on the other end of the positioning rod (31), and the positioning rod (31) and the limiting rod (32) are arranged in a T shape; When clamping the pipe, the driver (24) drives the positioning rod (31) through the transmission assembly to slide close to and abut against the outer surface of the pipe.

4. The composite clamp according to claim 3, characterized in that: The other end of the positioning rod (31) is provided with a clamp tooth top plate (33) with a V-shaped cross section and facing the pipe fixture.

5. The composite clamp according to claim 3, characterized in that: An elastic protective sleeve (34) is sleeved on the positioning rod (31), and the elastic protective sleeve (34) is located between the limiting rod (32) and the support (21).

6. The composite clamp according to claim 1, characterized in that: The clamping parts of the first clamping jaw (22) and the second clamping jaw (23) are provided with jaw plates (27).

7. The composite clamp according to claim 1, characterized in that: The first clamping jaw (22) has a first claw hook (221), and the second clamping jaw (23) has two second claw hooks (231) arranged in parallel; When clamping the pipe, the first claw hook (221) crosses between the two second claw hooks (231).

8. The composite clamp according to claim 1, characterized in that: The pipe detection assembly includes a trigger door (41), a return spring and a proximity switch (42); One end of the trigger door (41) is rotatably mounted on the pillar (1), a return spring is arranged between the trigger door (41) and the pillar (1), and a proximity switch (42) is mounted on the pillar (1).

9. The composite clamp according to claim 8, characterized in that: The trigger door (41) is provided with a roller (43) for abutting against the pipe fitting.

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