Hydraulic power tongs easy to hoist

Abstract

The utility model relates to hydraulic power tongs easy to hoist. The hydraulic power tongs comprise a main tong assembly, a back-up tong assembly and a hoisting frame. The main tong assembly is arranged above the back-up tong assembly; the two sides of the lifting frame are connected to the two sides of the back-up wrench assembly respectively. According to the hydraulic power tongs, hoisting operation can be facilitated, the conveying and construction operation efficiency of the hydraulic power tongs is improved, and the hydraulic power tongs are simple in hoisting structure, practical and convenient to connect and install.

Description

Technical Field

[0001] The present application relates to a hydraulic power tong that is easy to hoist and is applicable to the field of hoisting equipment. Background Art

[0002] Hydraulic power tongs are mechanized equipment used for loading and unloading sucker rods, oil pipes, casings, heat-insulated pipes, drill pipes and similar pipe thread during well repair operations in oil fields. Existing hydraulic power tongs are mainly composed of a main tong assembly and a backup tong assembly. The backup tong assembly clamps the oil pipe coupling, and the main tong assembly clamps the oil pipe and rotates to complete the work of loading and unloading the pipe. Existing hydraulic power tongs are heavy and inconvenient to transport and assemble, thereby increasing the labor intensity of workers. For this reason, a hydraulic power tong that is easy to hoist is needed in the prior art. Utility Model Content

[0003] The purpose of the present application is to design a hydraulic power tong that is easy to hoist, aiming to solve the hoisting problem of the existing hydraulic power tongs.

[0004] The present application relates to a hydraulic power tong that is easy to hoist. The hydraulic power tong comprises a main tong assembly, a backup tong assembly and a hoisting frame; the main tong assembly is arranged above the backup tong assembly; and the two sides of the hoisting frame are respectively connected to the two sides of the backup tong assembly.

[0005] Furthermore, the lifting frame includes a lifting rod and a lifting box; the lifting rod includes a left lifting rod and a right lifting rod; the left lifting rod is arranged on the left side of the lifting box, and is connected to the left side of the back clamp assembly through its connecting assembly; the right lifting rod is arranged on the right side of the lifting box, and is connected to the right side of the back clamp assembly through its connecting assembly.

[0006] Furthermore, one end of the left suspension rod is fixedly connected to the left side of the lifting box, and the other end of the left suspension rod is fixedly connected to its connecting assembly; one end of the right suspension rod is fixedly connected to the right side of the lifting box, and the other end of the right suspension rod is fixedly connected to its connecting assembly.

[0007] Furthermore, the connecting assembly includes an adapter, a connecting block, a first connecting plate and a second connecting plate; the top of the adapter is fixedly connected to the bottom end of the suspension rod; the bottom of the adapter is movably connected to one end of the connecting block through a connecting shaft; the first connecting plate and the second connecting plate are fixedly arranged on the connecting block in the horizontal direction; the first connecting plate and the second connecting plate are respectively clamped on the upper and lower sides of the back clamp assembly and fixed on the back clamp assembly.

[0008] Furthermore, the hoisting box is arranged on the top of the main clamp assembly and is located in the middle position of the main clamp assembly; the left suspension rod and the right suspension rod are symmetrically arranged along the hoisting box.

[0009] Furthermore, a lifting device is provided on the lifting box, and the lifting device includes a U-shaped seat and a lifting ring. The U-shaped seat is fixedly arranged on the top of the lifting box; a spiral rod is provided on the U-shaped seat, and the lifting ring can be movably mounted on the spiral rod.

[0010] Furthermore, one end of the left suspension rod is also fixedly connected to the left side of the suspension box through a left connecting rod; one end of the right suspension rod is also fixedly connected to the right side of the suspension box through a right connecting rod.

[0011] Furthermore, the interior of the hoisting box is a hollow structure.

[0012] Furthermore, the main tongs assembly includes a main tongs body, a main tongs clamping cavity is provided at the center of the main tongs body; the back tongs assembly includes a back tongs body, a back tongs clamping cavity is provided at the center of the back tongs body; the main tongs clamping cavity and the back tongs clamping cavity are coaxially arranged along the same axis, and the main tongs body can float up and down along the axis relative to the back tongs body.

[0013] Furthermore, the main pliers assembly also includes a shell, and the shell is sleeved on the main pliers body.

[0014] The hydraulic power tongs according to the present application that are easy to hoist have the following technical advantages:

[0015] (1) The hydraulic power tongs designed in this application can facilitate lifting operations and improve the transportation and construction efficiency of the hydraulic power tongs;

[0016] (2) The hydraulic power tongs designed in this application have a simple and practical lifting structure and are easy to connect and install;

[0017] (3) The hydraulic power tongs designed in the present application have a lifting structure that is connected to a back-up tong assembly, which can play a balancing role and avoid pulling between the main tong assembly and the back-up tong assembly, thereby preventing damage to the hydraulic power tongs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a hydraulic power tong that is easy to lift in this application. Figure 1 .

[0019] Figure 2 This is a schematic diagram of a hydraulic power tong that is easy to lift in this application. Figure 2 .

[0020] Figure 3 It is a schematic diagram of the interior of a hydraulic power tong that is easy to hoist according to the present application.

[0021] Figure 4 It is a schematic diagram of the structure of the hanging frame of this application.

[0022] Figure 5 It is a schematic diagram of the connector structure of the present application.

[0023] Figure 6 It is a schematic diagram of the structure of the sling of this application.

[0024] In the figure: 1. main tongs assembly; 11. outer shell; 12. main tongs body; 13. main tongs clamping chamber; 2. back tongs assembly; 21. back tongs body; 3. lifting frame; 31. left lifting rod; 32. right lifting rod; 33. connecting assembly; 331. adapter; 332. connecting block; 333. connecting shaft; 334. first connecting plate; 335. second connecting plate; 34. lifting box; 35. left connecting rod; 36. right connecting rod; 37. U-shaped seat; 38. lifting ring; 39. spiral rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail in conjunction with the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict. It can be understood by those skilled in the art that the hydraulic power tongs of the present application can be a mechanical device for clamping oil pipes in oilfield well repair operations.

[0026] like Figure 1-3 As shown, a hydraulic power tong that is easy to hoist in the present application can be used to clamp the oil pipe, so as to perform construction operations such as oil pipe connection. Specifically, the hydraulic power tong includes a main tong assembly 1, a back-up tong assembly 2 and a hoisting frame 3. Among them, the main tong assembly 1 is arranged above the back-up tong assembly 2, and forms a clamping mechanism with the back-up tong assembly 2. Further, the hoisting frame 3 is a steel structure as a whole. Since the main tong body 12 can float up and down along the same axis relative to the back-up tong body 21, the two sides of the hoisting frame 3 are respectively connected to the two sides of the back-up tong assembly 2, so that the main tong assembly 1 and the back-up tong assembly 2 can be pulled and damaged during hoisting. Specifically, the main part of the hoisting frame 3 is located at the top of the main tong assembly 1, and the two sides of the hoisting frame 3 are respectively fixedly connected to the two sides of the back-up tong assembly 2 through a hoisting rod, thereby forming a hoisting structure. The hydraulic power tong of the present application is designed with a hoisting frame, which can facilitate the hoisting of the hydraulic power tong during transportation and construction, improve efficiency, and at the same time, the hoisting frame has a simple structure and is convenient for connection and installation.

[0027] Preferably, in combination with the above scheme, Figure 4 As shown, in the present embodiment: the hoisting frame 3 specifically includes a hoisting rod and a hoisting box 34 (i.e., the main body); specifically, the hoisting rod includes a left hoisting rod 31 and a right hoisting rod 32; wherein, the left hoisting rod 31 is fixedly arranged on the left side of the hoisting box 34, and is connected to the left side of the back clamp assembly 2 through a connecting component 33 on one side thereof; further, the right hoisting rod 32 is fixedly arranged on the right side of the hoisting box 34, and is connected to the right side of the back clamp assembly 2 through a connecting component 33 on one side thereof, thereby forming a connection.

[0028] Preferably, in combination with the above scheme, Figure 3 to Figure 4 As shown, in this embodiment: one end of the left suspension rod 31 is fixedly connected to the left side of the lifting box 34, preferably by welding; the other end of the left suspension rod 31 is fixedly connected to the connecting component 33 on one side thereof, and is fixedly connected to the left side of the back clamp assembly 2 through the connecting component 33 on one side thereof; further, one end of the right suspension rod 32 is fixedly connected to the right side of the lifting box 34, preferably by welding; the other end of the right suspension rod 32 is fixedly connected to the connecting component 33 on one side thereof, and is fixedly connected to the right side of the back clamp assembly 2 through the connecting component 33 on one side thereof.

[0029] Preferably, in combination with the above scheme, Figure 6 As shown, in this embodiment: the connecting assembly 33 includes an adapter 331, a connecting block 332, a first connecting plate 334 and a second connecting plate 335; specifically, the top of the adapter 331 is fixedly connected to the bottom end of the boom; the bottom of the adapter 331 is movably connected to one end of the connecting block 332 through a connecting shaft 333, that is, the connecting block 332 can rotate on the adapter 331 around the connecting shaft 333, and the movable connection between the connecting block 332 and the adapter 331 is mainly to avoid shaking caused by unbalanced connection of the hydraulic power tongs during lifting operations, so as to avoid damage to the hydraulic power tongs; further, the first connecting plate 334 and the second connecting plate 335 are fixedly arranged on the connecting block 332 in the horizontal direction; specifically, the first connecting plate 334 and the second connecting plate 335 are respectively clamped on the upper and lower sides of the back tong assembly 2, and fixed on the back tong assembly 2, thereby realizing fixed connection with the back tong assembly 2; the first connecting plate 334 and the second connecting plate 335 are connected to the back tong assembly 2 by bolting or welding.

[0030] Preferably, in combination with the above scheme, Figure 4 As shown, in this embodiment: the hoisting box 34 is arranged on the top of the main clamp assembly 1 and is located in the middle position of the main clamp assembly 1, so that it can play a balancing role; specifically, the left suspension rod 31 and the right suspension rod 32 are symmetrical along the center line of the hoisting box 34, thereby forming a balanced structure.

[0031] Preferably, in combination with the above scheme, Figure 4 , Figure 6 As shown, in this embodiment: the hoisting box 34 is also provided with a hoisting device, which is arranged on the top of the hoisting box 34; specifically, as shown in FIG. Figure 6 As shown, the lifting box 34 is also provided with a lifting device, which includes a U-shaped seat 37 and a lifting ring 38, wherein the U-shaped seat 37 is fixedly arranged on the top of the lifting box 34; the U-shaped seat 37 is provided with a spiral rod 39, and the spiral rod 39 can be used to adjust the center of gravity of the hydraulic power tongs; further, the lifting ring 38 can be movably mounted on the spiral rod 39 to facilitate connection with the hook to achieve lifting.

[0032] Preferably, in combination with the above scheme, Figure 4 As shown, in the present embodiment: in order to improve the strength of the lifting frame, one end of the left hanging rod 31 is also fixedly connected to the left side of the lifting box 34 through the left connecting rod 35, one end of the left connecting rod 35 is welded to one end of the left hanging rod 31, and the other end of the left connecting rod 35 is welded to the left side of the lifting box 34; further, one end of the right hanging rod 32 is also fixedly connected to the right side of the lifting box 34 through the right connecting rod 36, one end of the right connecting rod 36 is welded to one end of the right hanging rod 32, and the other end of the right connecting rod 36 is welded to the right side of the lifting box 34; further, the left connecting rod 35 and the right connecting rod 36 are symmetrical structures along the center line of the lifting box 34.

[0033] Preferably, in combination with the above scheme, Figure 4 As shown, in this embodiment: the interior of the hoisting box 34 is a cavity structure, and the design of the cavity structure can realize the installation of components such as the hydraulic power clamp cable and the controller, and plays the role of storage and accommodation.

[0034] Preferably, in combination with the above scheme, Figure 3 As shown, in this embodiment: the main tong assembly 1 includes a main tong body 12, and a main tong clamping cavity 13 is provided at the center position of the main tong body 12; correspondingly, the back-up tong assembly 2 includes a back-up tong body 21, and a back-up tong clamping cavity is provided at the center position of the back-up tong body 21; specifically, the main tong clamping cavity 13 and the back-up tong clamping cavity are coaxially arranged along the same axis, and the main tong body 12 can float up and down along the axis relative to the back-up tong body 21; in the present application scheme, since the main tong body 12 can float up and down along the axis relative to the back-up tong body 21, the lifting frame is specially connected to the back-up tong body 21 to avoid pulling between the main tong assembly and the back-up tong assembly during the lifting process, thereby damaging the hydraulic power tongs.

[0035] Preferably, in combination with the above scheme, Figure 3 As shown, in this embodiment: the main tongs assembly 1 further comprises a housing 11, and the housing 11 is sleeved on the main tongs body 12, thereby playing a protective role.

[0036] The hydraulic power tongs according to the present application that are easy to hoist have the following technical advantages:

[0037] (1) The hydraulic power tongs designed in this application can facilitate lifting operations and improve the transportation and construction efficiency of the hydraulic power tongs;

[0038] (2) The hydraulic power tongs designed in this application have a simple and practical lifting structure and are easy to connect and install;

[0039] (3) The hydraulic power tongs designed in the present application have a lifting structure that is connected to a back-up tong assembly, which can play a balancing role and avoid pulling between the main tong assembly and the back-up tong assembly, thereby preventing damage to the hydraulic power tongs.

[0040] Although the implementation methods disclosed in this application are as above, the contents described are only implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A hydraulic power tong that is easy to hoist, characterized in that: The hydraulic power tongs comprise a main tong assembly (1), a backup tong assembly (2) and a hoisting frame (3); the main tong assembly (1) is arranged above the backup tong assembly (2); and two sides of the hoisting frame (3) are respectively connected to two sides of the backup tong assembly (2).

2. The hydraulic power tongs according to claim 1, characterized in that: The hoisting frame (3) includes a hoisting rod and a hoisting box (34); the hoisting rod includes a left hoisting rod (31) and a right hoisting rod (32); the left hoisting rod (31) is arranged on the left side of the hoisting box (34), and is connected to the left side of the back clamp assembly (2) through its connecting assembly (33); the right hoisting rod (32) is arranged on the right side of the hoisting box (34), and is connected to the right side of the back clamp assembly (2) through its connecting assembly (33).

3. The hydraulic power tongs according to claim 2, characterized in that: One end of the left suspension rod (31) is fixedly connected to the left side of the suspension box (34), and the other end of the left suspension rod (31) is fixedly connected to its connecting assembly (33); one end of the right suspension rod (32) is fixedly connected to the right side of the suspension box (34), and the other end of the right suspension rod (32) is fixedly connected to its connecting assembly (33).

4. The hydraulic power tongs according to claim 2, characterized in that: The connecting assembly (33) includes an adapter (331), a connecting block (332), a first connecting plate (334) and a second connecting plate (335); the top of the adapter (331) is fixedly connected to the bottom end of the suspension rod; the bottom of the adapter (331) is movably connected to one end of the connecting block (332) via a connecting shaft (333); the first connecting plate (334) and the second connecting plate (335) are fixedly arranged on the connecting block (332) in the horizontal direction; the first connecting plate (334) and the second connecting plate (335) are respectively clamped on the upper and lower sides of the back clamp assembly (2), and fixed on the back clamp assembly (2).

5. The hydraulic power tongs according to claim 2, characterized in that: The hoisting box (34) is arranged on the top of the main tong assembly (1) and is located in the middle of the main tong assembly (1); the left suspension rod (31) and the right suspension rod (32) are symmetrically arranged along the hoisting box (34).

6. The hydraulic power tongs according to claim 2, characterized in that: The hoisting box (34) is also provided with a hoisting device, which includes a U-shaped seat (37) and a lifting ring (38). The U-shaped seat (37) is fixedly arranged on the top of the hoisting box (34); the U-shaped seat (37) is provided with a spiral rod (39), and the lifting ring (38) is sleeved on the spiral rod (39).

7. The hydraulic power tongs according to claim 3, characterized in that: One end of the left suspension rod (31) is also fixedly connected to the left side of the suspension box (34) via a left connecting rod (35); one end of the right suspension rod (32) is also fixedly connected to the right side of the suspension box (34) via a right connecting rod (36).

8. The hydraulic power tongs according to claim 2, characterized in that: The hoisting box (34) has a hollow structure.

9. The hydraulic power tongs according to any one of claims 1 to 8, characterized in that: The main tongs assembly (1) comprises a main tongs body (12), wherein a main tongs clamping cavity (13) is provided at the center of the main tongs body (12); the back tongs assembly (2) comprises a back tongs body (21), wherein a back tongs clamping cavity is provided at the center of the back tongs body (21); the main tongs clamping cavity (13) and the back tongs clamping cavity are coaxially arranged along the same axis, and the main tongs body (12) can float up and down along the axis relative to the back tongs body (21).

10. The hydraulic power tongs according to claim 9, characterized in that: The main pliers assembly (1) further comprises a housing (11), wherein the housing (11) is sleeved on the main pliers body (12).

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