Pipe rolling machine

Abstract

The utility model relates to the technical field of digging and drilling equipment, in particular to a pipe twisting machine which comprises a base and a main twisting disc installed on the base and used for clamping a twisting pipe, a lifting oil cylinder is movably installed on the base, the output end of the lifting oil cylinder is fixedly connected with the bottom of the main twisting disc, a base is further fixedly installed at the end of the base, and the main twisting disc is fixedly connected with the base. A connecting pin shaft is movably mounted in the center of the base, a telescopic centering frame is movably connected between one end of the connecting pin shaft and one side of the main rubbing disc, a leveling oil cylinder is movably mounted on the base, the output end of the leveling oil cylinder is movably connected with a mounting lug, and a stress part is arranged on one side of the mounting lug. When the pipe twisting oil cylinder drives the main twisting disc to conduct pipe twisting work, press-in work or pull-out work and pipe twisting work is conducted, the bottom end of the telescopic centering frame, the leveling oil cylinder and the stress piece form a triangular supporting system, the stress piece further improves the bearing load force of the telescopic centering frame, and concentricity and machining precision can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, and in particular to a pipe rolling machine. Background Technology

[0002] The casing twisting machine is a type of full casing drilling rig. This equipment uses a clamping mechanism to drive the casing to twist back and forth in both directions to reduce the resistance of sinking and pulling the casing. The casing driving device is driven by a hydraulic cylinder to realize the sinking and pulling operation of the casing. This equipment can clamp casings with a maximum diameter of 3300mm, making them rotate clockwise or counterclockwise or move up and down along the pile hole axis. With the application of grab buckets or auger drills, it can realize casing drilling.

[0003] In the prior art, such as the patent with publication number CN202510063U, a centering mechanism for a pipe-rolling drill is disclosed, which includes a rotating support lug, a front part of a connecting rod, and a rear part of a connecting rod connected in sequence; it also includes a connecting device disposed between the front part of the connecting rod and the rear part of the connecting rod, and the connecting device is fixedly connected to the front part of the connecting rod and rotatably connected to the rear part of the connecting rod.

[0004] The above structure does not generate extra degrees of freedom, but the centering structure in the tube rolling machine bears a low load after the tube rolling machine presses in or pulls out. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a tube rolling machine to solve the problem that the centering structure of the tube rolling machine has a low load-bearing capacity after the tube rolling machine is pressed in or pulled out.

[0006] To achieve the above objectives, this utility model provides a tube-rubbing machine, including a base and a main rubbing disc for clamping and rubbing tubes mounted on the base. A lifting cylinder is movably mounted on the base, and the output end of the lifting cylinder is fixedly connected to the bottom of the main rubbing disc. A base is also fixedly mounted at the end of the base, and two sets of tube-rubbing cylinders are movably connected inside the base. The output end of the tube-rubbing cylinder is movably connected to one side of the main rubbing disc.

[0007] A connecting pin is movably installed at the center of the base. One end of the connecting pin is movably connected to one side of the main rubbing plate by a telescopic centering frame. The bottom end of the telescopic centering frame is fixedly installed with a mounting ear.

[0008] A leveling cylinder is movably mounted on the base. The output end of the leveling cylinder is movably connected to a mounting ear. A force-bearing component is provided on one side of the mounting ear. The force-bearing component is used to increase the load-bearing capacity of the telescopic centering frame.

[0009] Preferably, the telescopic centering frame includes a support frame hinged to the leveling cylinder and the mounting lug connection, and a swing rod is movably mounted at one end of the support frame;

[0010] A movable seat is slidably mounted on the base, and a chuck is rotatably mounted inside the movable seat. Multiple sets of grooves are formed on the outside of the chuck.

[0011] The other end of the swing rod is rotatably connected to the center of the chuck. A limiting cylinder is fixedly installed on the top of the swing rod. A limiting rod is connected to the output end of the limiting cylinder. The limiting rod is slidably installed inside the swing rod. The bottom end of the limiting rod is engaged in a groove.

[0012] Preferably, the multiple sets of grooves are evenly distributed on the outside of the chuck, and the end of the limiting rod is set with a trapezoidal structure.

[0013] Preferably, the base has a groove for accommodating the swing of the movable seat.

[0014] Preferably, the swing rod has an L-shaped structure, and a spring is sleeved on the outside of the limiting rod, with both ends of the spring connected to the inner wall of the swing rod.

[0015] Preferably, the rubbing cylinders are distributed in a mirror image inside the base with the connecting pin as the center, and the connecting pin has a T-shaped structure.

[0016] Preferably, a step is fixedly installed on the top of the telescopic centering frame, and a platform is fixedly installed on the top of the main grinding disc.

[0017] The beneficial effects of this utility model are:

[0018] When the rubbing cylinder drives the main rubbing disc to perform rubbing work, the lifting cylinder can be adjusted to a state where it can freely extend and retract. After the main rubbing disc is raised and lowered, the leveling cylinder drives the telescopic centering frame on the connecting pin to lift and lower in coordination with the lifting and lowering of the main rubbing disc.

[0019] After pressing or pulling, when the tube is rolled, the bottom of the telescopic centering frame, the leveling cylinder, and the force-bearing components form a triangular support system. The force-bearing components further enhance the load-bearing capacity of the telescopic centering frame. When the main rolling plate swings left and right, the force-bearing components at the bottom of the telescopic centering frame are synchronized with the main rolling plate, which can ensure concentricity and processing accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0022] Figure 2 This is a top view of the overall structure of this utility model;

[0023] Figure 3 This is a side view of the overall structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the load-bearing component of this utility model.

[0025] The following are marked in the diagram: 1. Base; 2. Base; 3. Pipe-rubbing cylinder; 4. Main rubbing disc; 5. Lifting cylinder; 6. Connecting pin; 7. Telescopic centering frame; 8. Step; 9. Platform; 10. Leveling cylinder; 11. Load-bearing component; 12. Mounting ear; 13. Support frame; 14. Swing rod; 15. Moving seat; 16. Chuck; 17. Groove; 18. Limiting rod; 19. Spring; 20. Limiting cylinder; 21. Slide groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a tube-rubbing machine includes a base 1 and a main tube-rubbing disc 4 for clamping and rubbing tubes mounted on the base 1. A lifting cylinder 5 is movably mounted on the base 1, and the output end of the lifting cylinder 5 is fixedly connected to the bottom of the main tube-rubbing disc 4. A base 2 is also fixedly mounted at the end of the base 1. Two sets of tube-rubbing cylinders 3 are movably connected inside the base 2, and the output end of the tube-rubbing cylinder 3 is movably connected to one side of the main tube-rubbing disc 4.

[0028] A connecting pin 6 is movably installed at the center of the base 2. A telescopic centering frame 7 is movably connected between one end of the connecting pin 6 and one side of the main rubbing plate 4. An mounting ear 12 is fixedly installed at the bottom of the telescopic centering frame 7.

[0029] A leveling cylinder 10 is movably mounted on the base 1. The output end of the leveling cylinder 10 is movably connected to the mounting ear 12. A force-bearing component 11 is provided on one side of the mounting ear 12. The force-bearing component 11 is used to increase the load-bearing capacity of the telescopic centering frame 7.

[0030] In this embodiment, when the pipe rubbing operation is performed, the lifting cylinder 5 can be adjusted to a freely retractable oil-flowing state. After the main rubbing disc 4 is raised and lowered, the leveling cylinder 10 drives the telescopic centering frame 7 on the connecting pin 6 to rise and fall in coordination with the raising and lowering operation of the main rubbing disc 4.

[0031] After pressing or pulling, when the tube is rolled, the bottom of the telescopic centering frame 7, the leveling cylinder 10, and the force-bearing component 11 form a triangular support system. The force-bearing component 11 further enhances the load-bearing capacity of the telescopic centering frame 7. When the main rolling plate 4 swings left and right, the force-bearing component 11 at the bottom of the telescopic centering frame 7 is synchronized with the main rolling plate 4, which can ensure concentricity and processing accuracy.

[0032] As one implementation method, such as Figure 2 , Figure 3 and Figure 4 As shown, the telescopic centering frame 7 includes a support frame 13 hinged at the connection between the leveling cylinder 10 and the mounting ear 12, and a swing rod 14 is movably mounted on one end of the support frame 13.

[0033] A movable seat 15 is slidably mounted on the base 1. A chuck 16 is rotatably mounted inside the movable seat 15. Multiple sets of grooves 17 are formed on the outside of the chuck 16.

[0034] The other end of the swing rod 14 is rotatably connected to the center of the chuck 16. A limiting cylinder 20 is fixedly installed on the top of the swing rod 14. A limiting rod 18 is connected to the output end of the limiting cylinder 20. The limiting rod 18 is slidably installed inside the swing rod 14. The bottom end of the limiting rod 18 is engaged in the groove 17.

[0035] In this embodiment, the telescopic centering frame 7 on the connecting pin 6 is raised and lowered by the leveling cylinder 10 to coordinate with the raising and lowering of the main rubbing plate 4. At the same time, the telescopic centering frame 7 tilts and pulls the support frame 13 connected to the mounting ear 12. The support frame 13 rotates accordingly, causing the swing rod 14 to rotate outside the chuck 16. After pressing or pulling, when rubbing the tube, the limiting cylinder 20 can push out the limiting rod 18, so that the limiting rod 18 is inserted into the groove 17 outside the chuck 16, thereby further improving the load-bearing capacity of the telescopic centering frame 7.

[0036] As one implementation method, such as Figure 4 As shown, multiple sets of grooves 17 are evenly distributed on the outside of the chuck 16, and the end of the limiting rod 18 is set with a trapezoidal structure.

[0037] In this embodiment, after pressing or pulling, when performing the tube rolling operation, the limiting cylinder 20 can drive the limiting rod 18 to be pushed out. The trapezoidal head of the limiting rod 18 can easily be inserted into the groove 17. When the limiting rod 18 is inserted into the groove 17 outside the chuck 16, the bottom end of the telescopic centering frame 7 forms a triangular support system with the leveling cylinder 10 and the support frame 13, which enhances the load-bearing capacity of the telescopic centering frame 7.

[0038] As one implementation method, such as Figure 2 As shown, the base 1 has a groove 21 for accommodating the swing of the movable seat 15.

[0039] In this embodiment, when the tube rubbing operation is underway, as the main rubbing disc 4 swings left and right, the movable seat 15 inside the force-bearing component 11 at the bottom of the telescopic centering frame 7 moves within the sliding groove 21 on the base 1, synchronizing with the main rubbing disc 4, thus ensuring concentricity and processing accuracy.

[0040] As one implementation method, such as Figure 4 As shown, the swing rod 14 has an L-shaped structure, and a spring 19 is sleeved on the outside of the limiting rod 18. Both ends of the spring 19 are connected to the inner wall of the swing rod 14.

[0041] In this embodiment, the leveling cylinder 10 drives the telescopic centering frame 7 on the connecting pin 6 to rise and fall in coordination with the rising and falling of the main rubbing plate 4. The support frame 13 rotates accordingly, causing the swing rod 14 to rotate outside the chuck 16. The limiting rod 18 inside the swing rod 14 is pushed out, and the spring 19 can accelerate the extension and retraction process of the limiting rod 18, quickly forming the support of the support frame 13.

[0042] As one implementation method, such as Figure 1 , Figure 2 As shown, the rubbing cylinder 3 is distributed in a mirror image inside the base 2 with the connecting pin 6 as the center, and the connecting pin 6 has a T-shaped structure.

[0043] In this embodiment, the main rubbing disc 4 is driven by the rubbing cylinder 3 to rub the sleeve, while the two lifting cylinders 5 lift the main rubbing disc 4. During lifting, the connecting pin 6 and the telescopic centering frame 7 provide assistance to realize the pressing or pulling of the sleeve.

[0044] As one implementation method, such as Figure 1 , Figure 2 As shown, a step 8 is fixedly installed on the top of the telescopic centering frame 7, and a platform 9 is fixedly installed on the top of the main rubbing plate 4.

[0045] In this embodiment, the step 8 and platform 9 facilitate the operation of pressing or pulling, allowing the operator to enter the main rubbing plate 4 for observation.

[0046] Working principle: When in use, the main rubbing disc 4 is driven by the rubbing cylinder 3 to rub the sleeve, and the main rubbing disc 4 is raised and lowered by two lifting cylinders 5 to press the sleeve in or pull it out. In order to coordinate with the swing of the main rubbing disc 4 when rubbing the sleeve, the lifting cylinder 5 can be adjusted to a freely retractable oil-flowing state when rubbing the sleeve.

[0047] During pressing or pulling operations, after the main rubbing plate 4 is raised and lowered, the leveling cylinder 10 drives the telescopic centering frame 7 on the connecting pin 6 to rise and fall in coordination with the raising and lowering of the main rubbing plate 4. At the same time, the telescopic centering frame 7 tilts and pulls the support frame 13 connected to the mounting ear 12. The support frame 13 rotates accordingly, causing the swing rod 14 to rotate outside the chuck 16. After pressing or pulling operations, when rubbing the tube, the limiting cylinder 20 can drive the limiting rod 18 to be pushed out, so that the limiting rod 18 is inserted into the groove 17 outside the chuck 16, thereby further improving the load-bearing capacity of the telescopic centering frame 7. When the tube is rubbing, as the main rubbing plate 4 swings left and right, the movable seat 15 in the force-bearing component 11 at the bottom of the telescopic centering frame 7 moves in the sliding groove 21 on the base 1, synchronously with the main rubbing plate 4, which can ensure concentricity and processing accuracy.

[0048] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0049] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tube-rolling machine, comprising a base (1) and a main rolling disc (4) for clamping and rolling tubes mounted on the base (1), characterized in that, A lifting cylinder (5) is movably installed on the base (1). The output end of the lifting cylinder (5) is fixedly connected to the bottom of the main rubbing disc (4). A base (2) is also fixedly installed at the end of the base (1). Two sets of rubbing cylinders (3) are movably connected inside the base (2). The output end of the rubbing cylinder (3) is movably connected to one side of the main rubbing disc (4). A connecting pin (6) is movably installed at the center of the base (2). One end of the connecting pin (6) is movably connected to one side of the main rubbing plate (4) by a telescopic centering frame (7). The bottom end of the telescopic centering frame (7) is fixedly installed with a mounting ear (12). A leveling cylinder (10) is movably mounted on the base (1). The output end of the leveling cylinder (10) is movably connected to the mounting ear (12). A force-bearing component (11) is provided on one side of the mounting ear (12). The force-bearing component (11) is used to increase the load-bearing capacity of the telescopic centering frame (7).

2. The tube rolling machine according to claim 1, characterized in that, The telescopic centering frame (7) includes a support frame (13) hinged at the connection between the leveling cylinder (10) and the mounting ear (12), and a swing rod (14) is movably mounted at one end of the support frame (13). A movable seat (15) is slidably mounted on the base (1), and a chuck (16) is rotatably mounted inside the movable seat (15). Multiple sets of grooves (17) are opened on the outside of the chuck (16). The other end of the swing rod (14) is rotatably connected to the center of the chuck (16). A limiting cylinder (20) is fixedly installed on the top of the swing rod (14). A limiting rod (18) is connected to the output end of the limiting cylinder (20). The limiting rod (18) is slidably installed inside the swing rod (14). The bottom end of the limiting rod (18) is engaged in the groove (17).

3. A tube rolling machine according to claim 2, characterized in that, Multiple sets of grooves (17) are evenly distributed on the outside of the chuck (16), and the end of the limiting rod (18) is set with a trapezoidal structure.

4. A tube rolling machine according to claim 2, characterized in that, The base (1) is provided with a groove (21) to accommodate the swing of the movable seat (15).

5. A tube rolling machine according to claim 2, characterized in that, The swing rod (14) has an L-shaped structure, and a spring (19) is sleeved on the outside of the limiting rod (18). Both ends of the spring (19) are connected to the inner wall of the swing rod (14).

6. A tube rolling machine according to claim 1, characterized in that, The rubbing cylinder (3) is distributed in a mirror image inside the base (2) with the connecting pin (6) as the center. The connecting pin (6) has a T-shaped structure.

7. A tube rolling machine according to claim 1, characterized in that, The top of the telescopic centering frame (7) is fixedly equipped with a step (8), and the top of the main rubbing plate (4) is fixedly equipped with a platform (9).

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