Multifunctional oil field pipe clamping fork

Abstract

The utility model discloses a multifunctional oil field pipe clamping fork, which belongs to the field of fork loading machines and can realize fork loading operation when extended prongs are mounted. The length of the whole machine is effectively reduced, the passing radius of the whole machine is reduced, and one machine with multiple purposes is achieved. The fork mainly comprises a fork frame, two arc-shaped upper forks are symmetrically hinged to the upper portion of the fork frame, the two arc-shaped upper forks are driven by fork oil cylinders installed on the fork frame, two bottom fork teeth are installed on the fork frame in a sliding mode through pin shafts, the two bottom fork teeth are driven by lateral movement oil cylinders, and extension fork teeth are installed on the two bottom fork teeth. The utility model is mainly used for the forklift loader carrier.

Description

Technical Field

[0001] This utility model relates to the field of forklift loading machines, and more specifically, to a multi-functional oilfield pipe clamping forklift. Background Technology

[0002] In oilfield operations, materials such as oil pipes, maintenance equipment, and containers often need to be loaded, unloaded, and transferred, making loaders capable of handling various materials particularly important. In existing technology, this multi-functional pipe clamping fork includes components such as an upper gripper, an upper gripper cylinder, a lower gripper, a lower gripper cylinder, fork teeth, a pin shaft, a fork carriage, and a limit block. When the forks load steel pipes, the upper and lower gripper cylinders extend and retract via piston rods, crossing the forks to control the steel pipe within the space formed by the upper and lower grippers and the fork teeth. When loading containers and maintenance equipment, the upper and lower gripper cylinders retract to their shortest lengths, rotating the upper and lower grippers directly above the fork carriage to avoid interference with the materials.

[0003] However, the existing technology uses two hydraulic cylinders to control the single-sided upper fork, which requires two steps for clamping the pipe, making the process cumbersome and inefficient. When forklifting, the upper gripper is vertically upward, resulting in a large overall machine height and limited working space. The lower fork teeth are also long, increasing the overall machine length and turning radius, which affects the safety of empty machine relocation. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-functional oilfield pipe clamping fork, which can achieve fork loading operation when the extended fork teeth are installed; when the extended fork teeth are removed, the overall length of the machine is effectively reduced, the passing radius of the machine is reduced, and the machine can be used for multiple purposes.

[0005] This utility model is achieved through the following technical solution:

[0006] A multifunctional oilfield pipe clamping fork includes a fork frame, with two arc-shaped upper forks symmetrically hinged above the fork frame. The two arc-shaped upper forks are driven by fork cylinders mounted on the fork frame. Two bottom fork teeth are slidably mounted on the fork frame via pins. Both bottom fork teeth are driven by side-shifting cylinders, and each bottom fork tooth is equipped with an extension fork tooth.

[0007] Furthermore, the extended fork tooth includes two upright plates, an upper plate is welded above the upright plates on both sides, and a lower plate is welded below the upright plates on both sides. The front ends of the upright plates, the upper plate, and the lower plate are provided with tooth tips. The extended fork tooth is sleeved outside the bottom fork tooth, and the upper end face of the bottom fork tooth contacts and supports the lower plane of the upper plate.

[0008] Furthermore, the fork frame includes a frame body, with cylinder plates and cylinder boom plates symmetrically arranged on both sides of the frame body. The bottom of the fork cylinder is hinged to the lower end between the cylinder plate and the cylinder boom plate, and the piston rod of the fork cylinder is hinged to the end of the arc-shaped upper fork. The frame body is connected to the boom.

[0009] Furthermore, both bottom fork teeth include a fork body, a cylinder seat plate is provided at the rear of the fork body, a cylinder fixing seat I is provided on one side plate of the frame body, and a cylinder fixing seat II is provided on the other side plate of the frame body. The side-moving cylinder includes a left-moving cylinder and a right-moving cylinder. The bottom of the left-moving cylinder is hinged to the cylinder fixing seat I, and the bottom of the right-moving cylinder is hinged to the cylinder fixing seat II. The piston rod of the left-moving cylinder is hinged to the cylinder seat plate of one bottom fork tooth, and the piston rod of the right-moving cylinder is hinged to the cylinder seat plate of the other bottom fork tooth. Pin holes are provided on the side plates on both sides of the frame body, and the pins are installed in the pin holes and pass through the limiting holes on the fork body.

[0010] Furthermore, mounting holes are provided on the upright plates on both sides, and stiffening plates are provided on the fork body. The stiffening plates are provided with openings, the mounting holes and openings are aligned, and they are fixed with connecting pins to fix the extended fork teeth onto the fork body.

[0011] Furthermore, the fork body is also provided with a hook, and a stiffening plate is located above the hook. The stiffening plate supports the hook, and the limiting port on the hook is engaged with the crossbeam of the frame body to limit its movement.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When the extended fork is installed, forklift operations can be performed; when the extended fork is removed, the overall length of the machine is effectively reduced, the passing radius of the machine is lowered, and multiple uses of the machine are achieved.

[0014] 2. By combining two arc-shaped upper forks with two horizontally mounted bottom fork teeth, a single fork cylinder on one side can drive the upper fork to open and close, completing the pipe clamping operation, which is more efficient.

[0015] 3. The cylinder plate and the cylinder boom plate are connected vertically, connecting both the fork cylinder and the curved upper fork, resulting in better overall strength and manufacturability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the fork frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom fork tooth of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the extended fork tooth of this utility model;

[0021] Figure 6 This is a schematic diagram of the forklift operation of this utility model;

[0022] Figure 7 This is a schematic diagram of the pipe clamping operation of this utility model;

[0023] Figure 8 This is a schematic diagram illustrating the reduction of the radius of this utility model.

[0024] In the diagram: 1. Arc-shaped upper fork; 2. Fork carriage; 3. Pin; 4. Fork cylinder; 5. Side-shift cylinder; 6. Bottom fork tooth; 7. Connecting pin; 8. Extension fork tooth; 9. Left-shift cylinder; 10. Right-shift cylinder; 21. Cylinder mounting seat I; 22. Cylinder plate; 23. Cylinder boom plate; 24. Cylinder mounting seat II; 25. Pin hole; 26. Frame; 61. Fork body; 62. Cylinder seat plate; 63. Hook; 64. Rib plate; 65. Limiting hole; 81. Vertical plate; 82. Lower plate; 83. Upper plate; 84. Tooth tip. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1 – Figure 5 As shown in Embodiment 1, a multifunctional oilfield pipe clamping fork includes a fork frame 2. Two arc-shaped upper forks 1 are symmetrically hinged above the fork frame 2. The two arc-shaped upper forks 1 are driven by fork cylinders 4 mounted on the fork frame 2. Two bottom fork teeth 6 are slidably mounted on the fork frame 2 via pins 3. Both bottom fork teeth 6 are driven by side-shifting cylinders 5. Both bottom fork teeth are equipped with extension fork teeth 8.

[0027] Example 2: A multifunctional oilfield pipe clamping fork, wherein the extended fork tooth 8 includes two side upright plates 81, an upper plate 83 welded above the side upright plates 81, and a lower plate 82 welded below the side upright plates 81. The front ends of the upright plates 81, upper plate 83, and lower plate 82 are provided with tooth tips 84. The extended fork tooth 8 is sleeved outside the bottom fork tooth, and the upper end face of the bottom fork tooth contacts and supports the lower plane of the upper plate 83. The fork frame 2 includes a frame body 26, with cylinder plates 22 and cylinders symmetrically arranged on both sides of the frame body 26. The boom plate 23 and the bottom of the fork cylinder 4 are hinged together at the lower end between the cylinder plate 22 and the cylinder boom plate 23. The piston rod of the fork cylinder 4 is hinged to the end of the arc-shaped upper fork 1. The frame body 26 is connected to the boom. Both bottom fork teeth include fork bodies 61. A cylinder seat plate 62 is provided behind the fork body 61. A cylinder fixing seat I 21 is provided on one side plate of the frame body 26, and a cylinder fixing seat II 24 is provided on the other side plate of the frame body 26. The side-shifting cylinder 5 includes a left-shifting cylinder 9 and a right-shifting cylinder 9. The bottom of the left-moving cylinder 9 is hinged to the cylinder fixing seat I 21, and the bottom of the right-moving cylinder 10 is hinged to the cylinder fixing seat II 24. The piston rod of the left-moving cylinder 9 is hinged to the cylinder seat plate 62 of the bottom fork tooth on one side, and the piston rod of the right-moving cylinder 10 is hinged to the cylinder seat plate 62 of the bottom fork tooth on the other side. The side plates on both sides of the frame 26 are provided with pin holes 25. The pin 3 is installed in the pin holes 25. The pin 3 passes through the limiting hole 65 on the fork body 61 and is slidably connected to the limiting hole 65. The upright plates 81 on both sides are provided with mounting holes, and the fork body 61 is also provided with a stiffening plate 64. The stiffening plate 64 is provided with an opening. The mounting holes and the openings are aligned and fixed with a connecting pin 7 to fix the extended fork tooth 8 onto the fork body 61. The fork body 61 is also provided with a hook 63. The stiffening plate 64 is located above the hook 63 and supports the hook 63. The limiting port on the hook 63 is engaged with the crossbeam of the frame 26 and serves as a limiting function. The rest is the same as in Embodiment 1.

[0028] During forklift operation, the extended fork tooth 8 is installed, and the bottom fork tooth 6 and the extended fork tooth 8 play their roles. The opening of the arc-shaped upper fork 1 reaches its maximum, preventing the material from interfering with the arc-shaped upper fork 1. Since the front end of the arc-shaped upper fork 1 is aligned with the bottom fork tooth 6 (not with the extended fork tooth 8), the overall height of the machine is reasonable when it is flipped upwards.

[0029] During pipe clamping operations, the extended fork tooth 8 is removed, and the arc-shaped upper fork 1 and the bottom fork tooth 6 achieve the function of clamping the steel pipe; when the machine is moved to another location without load, the extended fork tooth 8 is removed to reduce the overall length of the machine and reduce the passing radius.

[0030] Two fork cylinders 4 extend and retract to open and close two curved upper forks 1. To accommodate forklifts carrying materials of different sizes, two side-shifting cylinders 5 extend and retract to move the two bottom fork teeth 6 left and right respectively. Figure 6 As shown, the arc-shaped upper fork 1, driven by the fork cylinder 4, reaches its maximum opening to avoid interference with the material. Figure 7As shown, when the extended fork tooth 8 is removed, the front end of the curved upper fork 1 can be aligned with the front end of the bottom fork tooth 6, allowing for flexible operation; when the fork cylinder 4 is in its maximum extended position, the hinge point between the fork cylinder 4 and the curved upper fork 1 is located above the hinge point between the curved upper fork 1 and the fork carriage 2; when the fork cylinder 4 is in its maximum retracted position, the hinge point between the fork cylinder 4 and the curved upper fork 1 is located below the hinge point between the curved upper fork 1 and the fork carriage 2. Figure 8 As shown, R2 is the radius through which the extended fork tooth 8 passes before being removed, and R1 is the radius through which the extended fork tooth 8 passes after being removed, showing a significant reduction.

Claims

1. A multifunctional oil field pipe clamp fork, comprising a fork frame (2), two arc-shaped upper forks (1) are symmetrically hinged above the fork frame (2), and the two arc-shaped upper forks (1) are driven by a fork oil cylinder (4) installed on the fork frame (2), characterized in that: Two bottom prongs (6) are slidably installed on the fork frame (2) through a pin shaft (3), and are driven by side shift oil cylinders (5), and each of the two bottom prongs is provided with an extension prong (8).

2. The multi-functional oil field pipe clamp fork according to claim 1, characterized in that: The extension prong (8) comprises two side vertical plates (81), an upper plate (83) welded above the two side vertical plates (81), and a lower plate (82) welded below the two side vertical plates (81), and the front ends of the vertical plates (81), the upper plate (83) and the lower plate (82) are provided with prong tips (84), and the extension prong (8) is sleeved on the bottom prong.

3. The multi-functional oilfield pipe clamp of claim 2, wherein: The fork frame (2) comprises a frame body (26), and the frame body (26) is symmetrically provided with an oil cylinder plate (22) and an oil cylinder movable arm plate (23) on both sides, and the bottom of a fork oil cylinder (4) is hingedly installed between the oil cylinder plate (22) and the oil cylinder movable arm plate (23) at the lower end, and the piston rod of the fork oil cylinder (4) is hingedly connected to the end of the arc-shaped upper prong (1).

4. The multi-functional oil field pipe clamp of claim 3, wherein: The two bottom prongs each comprise a prong body (61), and the rear of the prong body (61) is provided with a cylinder seat plate (62), the side plate on one side of the frame body (26) is provided with an oil cylinder fixing seat I (21), the side plate on the other side of the frame body (26) is provided with an oil cylinder fixing seat II (24), the side shift oil cylinder (5) comprises a left shift oil cylinder (9) and a right shift oil cylinder (10), the bottom of the left shift oil cylinder (9) is hingedly connected to the oil cylinder fixing seat I (21), the bottom of the right shift oil cylinder (10) is hingedly connected to the oil cylinder fixing seat II (24), the piston rod of the left shift oil cylinder (9) is hingedly connected to the cylinder seat plate (62) of the bottom prong on one side, and the piston rod of the right shift oil cylinder (10) is hingedly connected to the cylinder seat plate (62) of the bottom prong on the other side; the side plates on both sides of the frame body (26) are provided with pin shaft holes (25), the pin shaft (3) is installed in the pin shaft holes (25), and the pin shaft (3) passes through limiting holes (65) on the prong body (61).

5. The multi-functional oil field pipe clamp of claim 4, wherein: The two side vertical plates (81) are provided with mounting holes, the prong body (61) is further provided with a rib plate (64), the rib plate (64) is provided with an opening, the mounting holes and the opening are aligned, and are fixed by a connecting pin (7).

6. The multi-functional oil field pipe clamp of claim 5, wherein: The prong body (61) is further provided with a hook (63), the rib plate (64) is located above the hook (63), and the limiting opening on the hook (63) is clamped on the cross beam of the frame body (26). The prong body (61) is further provided with a hook (63), the rib plate (64) is located above the hook (63), and the limiting opening on the hook (63) is clamped on the cross beam of the frame body (26).

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