Pipe clamp and clamp assembly

Abstract

The utility model relates to a pipe clamp and a clamp assembly, the clamp can be rotatably installed on a driving mechanism, and the clamp comprises a clamp arm, a centering elastic piece and a clamp tooth assembly; the clamping part of each clamp arm is provided with a mounting inclined surface which is inclined outwards from bottom to top; the clamp tooth assembly is mounted on the mounting inclined surface in a sliding manner; one end of the centering elastic piece is fixed to the top of the clamp arm, and the other end of the centering elastic piece abuts against a limiting pin at the top of the clamp arm, so that the centering elastic piece forms a V-shaped structure; and the centering elastic piece is positioned above the clamping part. The clamp has the advantages that a self-locking structure can be formed when the clamp tooth assembly clamps a pipe, the clamping capacity of the clamp is greatly improved, the problem that the pipe falls off in the pipe clamping process can be avoided, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a pipe clamp and a clamp assembly. Background Art

[0002] At present, with the development of oil drilling, various mechanized oil equipment (top drive, hydraulic elevator, iron roughneck, pipe laying manipulator and drilling floor manipulator, etc.) are used. Among them, the clamp assembly of the pipe laying manipulator or the drilling floor manipulator is an important equipment for clamping pipes. The clamping capacity of the clamp assembly is an important prerequisite for ensuring the safety of the pipes during drilling and lowering.

[0003] At present, the clamp form of the traditional clamp assembly is a clamp arm type or a clamp claw type. For example, the patent with publication number CN220319497U discloses a petroleum drilling pipe clamp, including a fixed seat, a clamping device is arranged at the bottom end of the fixed seat, and the clamping device includes a clamping motor, a worm gear, a worm, a transmission gear, a clamping gear and a clamping block. Fixed grooves are arranged at the bottom ends of the left and right side walls of the fixed seat, and a fixed shaft is rotatably arranged in the fixed groove. Fixed rods are fixedly arranged on the side walls of the fixed shaft. Clamping blocks are arranged below the left and right sides of the fixed seat, and one end of the fixed rod away from the fixed shaft is hinged to the side wall of the clamping block. Conductive grooves are arranged on the left and right side walls of the fixed seat above the fixed groove, and a transmission gear is rotatably arranged in the transmission groove. The transmission groove is located on the side of the transmission gear close to the fixed groove and the clamping gear is rotatably arranged. Through the arrangement of the clamping device, it is convenient to support the pipeline in a triangular position through the clamping block and the clamping block, thereby improving the clamping stability of the pipeline. However, the clamping ability generated by the clamping block alone is not good, the pipe has a large weight, and the pipe is easy to fall off during the clamping process, posing a safety hazard.

[0004] Therefore, there is an urgent need for a clamp and a clamp assembly with strong clamping ability and high safety. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a pipe clamp and a clamp assembly, which solves the technical problem that the prior art has poor clamping ability, resulting in easy falling off of the pipe during clamping and posing a safety hazard.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] On the one hand, the utility model provides a pipe clamp, which can be installed on a driving mechanism, and the clamp includes a clamp arm, a centering elastic member and a clamp tooth assembly; the clamping portion of the clamp arm has a mounting slope that tilts outward from bottom to top; the clamp tooth assembly can be slidably mounted on the mounting slope; one end of the centering elastic member is fixed to the top of the clamp arm, and the other end of the centering elastic member abuts against the limit pin on the top of the clamp arm, so that the centering elastic member forms a V-shaped structure; the centering elastic member is located above the clamping portion. The rear end of the clamp arm has a first pin shaft, through which it can be rotatably installed on the driving mechanism; the middle part of the clamp arm has a rotatable second pin shaft, through which it can be rotatably connected to the driving mechanism.

[0010] Optionally, the jaw assembly includes a mounting seat, two jaw plates and a resetting assembly; the mounting seat can be slidably mounted on the mounting inclined surface, and the resetting assembly is arranged between the mounting seat and the mounting inclined surface to enable the mounting seat to be reset; the mounting seat has two mounting grooves, and the two jaw plates are installed in the two mounting grooves.

[0011] Optionally, in a top view, the two mounting grooves are V-shaped.

[0012] Optionally, the clamping portion is V-shaped, and in a top view, the shapes of the centering elastic member, the clamping portion and the two jaw plates correspond to each other vertically.

[0013] Optionally, the clamping portion is provided with a sliding rod parallel to the mounting inclined surface, the mounting seat is slidably mounted on the sliding rod, and the reset assembly is arranged on the sliding rod.

[0014] Optionally, the reset assembly includes a limit spring and a reset spring; the limit spring is sleeved on the slide rod, and the limit spring is located between the top of the mounting seat and the clamping portion; the reset spring is sleeved on the slide rod, and the reset spring is located between the bottom of the mounting seat and the clamping portion.

[0015] Optionally, the jaw plate has a plurality of evenly arranged jaws on a side facing the pipe fixture.

[0016] Optionally, the centering elastic member is a plate spring

[0017] On the other hand, the utility model also provides a clamp assembly, including the above-mentioned clamp and a driving mechanism, the rear end of the clamp arm can be rotatably mounted on the driving mechanism through a first pin shaft, and the middle part of the clamp arm can be rotatably connected to the driving mechanism through a second pin shaft.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a pipe clamp, when clamping the pipe, the jaw assembly abuts against the outer surface of the pipe, when the clamp assembly lifts the pipe, under the action of friction, the jaw assembly will have a downward movement trend, slide downward along the installation slope, and the jaw assembly will clamp the pipe like a wedge to form a self-locking structure; when the clamp assembly places the pipe to no load, the jaw assembly will slide upward along the installation slope to unlock the self-locking and release the pipe. Compared with the prior art, the jaw assembly can form a self-locking structure when clamping the pipe, greatly improving the clamping ability of the clamp, avoiding the problem of the pipe falling off during the process of clamping the pipe, and having higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the pipe clamp in Example 1 of the utility model;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 It is a top view schematic diagram of the pipe clamp in Example 1 of the utility model;

[0024] Figure 4 for Figure 3 Structural diagram of the middle AA section;

[0025] Figure 5 It is a top view schematic diagram of the forceps tooth assembly in Example 1 of the utility model;

[0026] Figure 6 It is a schematic diagram of the self-locking structure of the forceps tooth assembly in Example 1 of the utility model.

[0027] [Description of Reference Numerals]

[0028] 1: Clamp arm; 11: First pin shaft; 12: Second pin shaft;

[0029] 2: Centering elastic parts;

[0030] 31: mounting seat; 32: jaw plate; 321: jaw; 33: limit spring; 34: return spring. 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. Among them, the "front" and "rear" directions described herein are based on Figure 1 The orientation is used as a reference.

[0032] Embodiment 1:

[0033] like Figure 1 As shown, this embodiment provides a clamp for pipes, which can be installed on a driving mechanism. The clamp includes a clamp arm 1, a centering elastic member 2 and a clamp tooth assembly; the clamping portion of the clamp arm 1 has a mounting slope that tilts outward from bottom to top; the clamp tooth assembly can be slidably mounted on the mounting slope; one end of the centering elastic member 2 is fixed to the top of the clamp arm 1, and the other end of the centering elastic member 2 abuts against the limit pin on the top of the clamp arm 1, so that the centering elastic member 2 forms a V-shaped structure; the centering elastic member 2 is located above the clamping portion. The rear end of the clamp arm 1 has a first pin shaft 11, which can be rotatably installed on the driving mechanism through the first pin shaft 11; the middle part of the clamp arm 1 has a rotatable second pin shaft 12, which can be rotatably connected to the driving mechanism through the second pin shaft 12. In this embodiment, the centering elastic member 2 is a plate spring.

[0034] Specifically, when the pipe is clamped, the jaw assembly contacts the outer surface of the pipe. When the clamp assembly lifts the pipe, the jaw assembly will move downward under the action of friction and slide downward along the installation slope. The jaw assembly will clamp the pipe like a wedge to form a self-locking structure. When the clamp assembly places the pipe without load, the jaw assembly will slide upward along the installation slope to release the self-locking structure and release the pipe. Compared with the prior art, the jaw assembly can form a self-locking structure when clamping the pipe, which greatly improves the clamping ability of the clamp, can avoid the problem of the pipe falling off during the process of clamping the pipe, and is safer.

[0035] Furthermore, if Figure 1-Figure 6As shown, the jaw assembly includes a mounting seat 31, two jaw plates 32 and a reset assembly; the mounting seat 31 can be slidably mounted on the mounting inclined surface, and the reset assembly is arranged between the mounting seat 31 and the mounting inclined surface so that the mounting seat 31 can be reset. The jaw plate 32 has a plurality of evenly arranged jaws 321 on the side facing the pipe. The mounting seat 31 has two mounting grooves, which are V-shaped when viewed from above, and the two jaw plates 32 are installed in the two mounting grooves. In this embodiment, the shape of the clamping portion is V-shaped, and the shapes of the centering elastic member 2, the clamping portion and the two jaw plates 32 are arranged in a corresponding manner from top to bottom when viewed from above, so that as the two clamp arms 1 are gradually closed, the pipe is close to the clamping portion, and the pipe is guided to center by the centering elastic member 2, so that the clamping portions of the two clamp arms 1 can clamp the pipe.

[0036] Furthermore, if Figure 4 and Figure 6 As shown, the clamping part is provided with a slide bar parallel to the mounting inclined surface, the mounting seat 31 is slidably mounted on the slide bar, and the reset assembly is arranged on the slide bar. The reset assembly includes a limit spring 33 and a reset spring 34; the limit spring 33 is sleeved on the slide bar, and the limit spring 33 is located between the top of the mounting seat 31 and the clamping part; the reset spring 34 is sleeved on the slide bar, and the reset spring 34 is located between the bottom of the mounting seat 31 and the clamping part.

[0037] Embodiment 2:

[0038] The present embodiment provides a clamp assembly, including the clamp in Embodiment 1 and a driving mechanism, wherein the rear end of the clamp arm 1 can be rotatably mounted on the driving mechanism through the first pin shaft 11, and the middle part of the clamp arm 1 can be rotatably connected to the driving mechanism through the second pin shaft 12. Its working condition is that after the pipe is in place, the driving mechanism drives the clamp to close, the clamping part of the clamp arm 1 approaches the pipe, the pipe is centered under the guidance of the centering elastic member 2, the jaw plate 32 abuts against the outer surface of the pipe, the clamp assembly lifts the pipe, the jaw plate 32 slides downward along the installation inclined surface to compress the reset spring 34 and stretch the limit spring 33 to form a self-locking; when the clamp assembly releases the pipe to a position without load, the jaw plate 32 slides upward along the installation inclined surface under the action of the reset spring 34 and the limit spring 33 to reset, unlocking the self-locking and releasing the pipe.

[0039] In the description of the present utility model, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, 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 "install", "connect", "connect", "fix" 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 utility model, 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 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 utility model. 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 can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pipe clamp, the clamp being rotatably mounted on a drive mechanism, characterized in that: It comprises a clamp arm (1), a centering elastic member (2) and a clamp tooth assembly; The clamping portion of the clamp arm (1) has a mounting inclined surface which is inclined outward from bottom to top; the clamp tooth assembly can be slidably mounted on the mounting inclined surface; One end of the centering elastic member (2) is fixed to the top of the clamp arm (1), and the other end of the centering elastic member (2) abuts against a limit pin at the top of the clamp arm (1), so that the centering elastic member (2) forms a V-shaped structure; the centering elastic member (2) is located above the clamping portion.

2. The pipe clamp according to claim 1, characterized in that: The jaw assembly comprises a mounting seat (31), two jaw plates (32) and a reset assembly; The mounting seat (31) is slidably mounted on the mounting inclined surface, and the resetting component is arranged between the mounting seat (31) and the mounting inclined surface so that the mounting seat (31) can be reset; The mounting seat (31) has two mounting grooves, and the two jaw plates (32) are mounted in the two mounting grooves.

3. The pipe clamp according to claim 2, characterized in that: In a top view, the two mounting grooves are V-shaped.

4. The pipe clamp according to claim 3, characterized in that: The clamping portion is V-shaped, and in a top view, the shapes of the centering elastic member (2), the clamping portion and the two jaw plates (32) correspond to each other in the vertical direction.

5. The pipe clamp according to claim 2, characterized in that: The clamping portion is provided with a sliding rod parallel to the installation inclined surface, the installation seat (31) is slidably installed on the sliding rod, and the reset component is arranged on the sliding rod.

6. The pipe clamp according to claim 5, characterized in that: The reset assembly comprises a limit spring (33) and a reset spring (34); The limit spring (33) is sleeved on the slide rod, and the limit spring (33) is located between the top of the mounting seat (31) and the clamping portion; the return spring (34) is sleeved on the slide rod, and the return spring (34) is located between the bottom of the mounting seat (31) and the clamping portion.

7. The pipe clamp according to claim 2, characterized in that: The side of the jaw plate (32) facing the pipe fixture has a plurality of jaws (321) arranged evenly.

8. The pipe clamp according to claim 1, characterized in that: The centering elastic member (2) is a plate spring.

9. A clamp assembly, characterized in that: A pipe clamp comprising the pipe clamp according to any one of claims 1 to 8 and the driving mechanism; The rear end of the clamp arm (1) can be rotatably mounted on the driving mechanism via a first pin shaft (11), and the middle part of the clamp arm (1) can be rotatably connected to the driving mechanism via a second pin shaft (12).

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