Pipe rolling machine

Abstract

The invention relates to a pipe twisting machine which comprises a base, a main clamping mechanism, an auxiliary clamping mechanism, a pipe twisting mechanism and a pressurizing oil cylinder. The auxiliary clamping mechanism is arranged in the base and comprises a first clamping body and a second clamping body which are provided with arc-shaped clamping faces. The first clamping body is arranged on the base in a translation sliding manner; the two end parts of the second clamping body are rotationally arranged on the base; the pipe twisting mechanism comprises a first pipe twisting oil cylinder, a second pipe twisting oil cylinder, a connecting rod assembly and a sliding box assembly arranged on the base in a sliding mode. The connecting rod assembly comprises a plurality of connecting rods which are sequentially connected between the main clamping mechanism and the sliding box assembly in a hinged mode, the connecting rods are movably connected through pin shafts and pin holes, and at least one pin hole is a long kidney-shaped hole. According to the pipe twisting machine, the service life of the connecting rod mechanism and the sliding box assembly is prolonged, the service life of the clamping part of the auxiliary clamping mechanism is prolonged, the sleeve is protected, the maintenance frequency is reduced, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to a pipe rolling machine and belongs to the field of engineering machinery. Background Art

[0002] The full casing method is one of the pile foundation drilling methods. It has the advantages of good drilling quality, high single pile bearing capacity, and no mud pollution in dry hole operation. It is particularly suitable for drilling operations in geological conditions such as quicksand, silt and underground rivers. The construction equipment of the full casing method mainly includes two categories: rotary drilling rigs and pipe rolling machines. When the rotary drilling rig is used for casing construction, the casing is driven by the power system of the rotary drilling rig. Due to the small torque and pressure capacity of the rotary drilling rig, the diameter and depth of the casing construction are greatly limited. Auxiliary equipment such as vibrating hammers and cranes are often required for casing construction. There are problems such as high equipment investment, cumbersome construction process, and poor economy. The pipe rolling machine is an engineering equipment specially used for the construction of full casing bored piles. It uses two pipe rolling cylinders to reciprocate and extend the casing to twist the casing, so that the bottom teeth of the casing cut the rock and soil and drill the casing into the formation. Compared with the rotary drilling rig, it has the characteristics of simple structure, easy use, and low price. However, due to inherent problems in the structural design of the existing pipe rolling machine, the connecting rod mechanism and the slide box assembly connecting the main clamping mechanism are prone to abnormal wear and premature failure; the installation structure of the auxiliary clamping mechanism is complicated. When the base is tilted during the pipe rolling operation, the clamping part of the auxiliary clamping mechanism interferes with the casing, resulting in additional friction between the clamping part and the outer wall of the casing, requiring frequent maintenance of the clamping part and easily causing damage to the outer wall of the casing. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a tube rolling machine to improve the stress state of the connecting rod mechanism, greatly reduce the stress borne by the connecting rod mechanism and the slide box assembly, and increase their service life; simplify the structure and installation of the auxiliary clamping mechanism, avoid interference problems between the auxiliary clamping mechanism and the sleeve, increase the life of the clamping part, protect the sleeve, reduce the maintenance frequency, and reduce construction costs.

[0004] The object of the present invention is achieved in that: A tube rolling machine comprises a base, a main clamping mechanism, a secondary clamping mechanism, a tube rolling mechanism connecting the main clamping mechanism and the base, and a pressurized oil cylinder; The auxiliary clamping mechanism is arranged inside the base, and comprises a first clamping body with an arc-shaped clamping surface and a second clamping body; the first clamping body is arranged on the base in a translationally slidable manner; and the two ends of the second clamping body are rotatably arranged on the base; The tube rolling mechanism includes a first tube rolling cylinder, a second tube rolling cylinder, a connecting rod assembly and a sliding box assembly slidably arranged on a base; the first tube rolling cylinder and the second tube rolling cylinder are symmetrically hinged between the main clamping mechanism and the sliding box assembly; the connecting rod assembly includes a plurality of connecting rods hingedly connected in sequence between the main clamping mechanism and the sliding box assembly, and the connecting rods are movably connected through pins and pin holes, wherein at least one pin hole is a long waist hole for matching the change in the spatial distance between the main clamping mechanism and the sliding box assembly during the tube rolling process.

[0005] Furthermore, a guide groove and a guide key for translational guidance, and a thrust cylinder for pushing the first clamping body to translate are provided between the first clamping body and the base.

[0006] Furthermore, the second clamping body is a semicircular arc structure, and a first pin shaft is arranged at both ends thereof; the first pin shaft is rotatably embedded in a first support seat which is arranged on the base and has a U-shaped groove structure.

[0007] Furthermore, a limiting plate is provided on the base to support and limit the back of the second clamping body.

[0008] Furthermore, the connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod; the first connecting rod is a "cross" structure, provided with a first vertical hole and a first transverse hole; two second transverse holes are set at both ends of the second connecting rod; the third connecting rod is a "cross" structure, provided with a second vertical hole and a third transverse hole; the first vertical hole is hinged to the main clamping mechanism, the first transverse hole and the third transverse hole are respectively hinged to the two second transverse holes through pins, and the second vertical hole is hinged to the slide box assembly.

[0009] Furthermore, at least one of the first transverse hole, the second transverse hole and the third transverse hole is a long waist hole.

[0010] Furthermore, the slide box assembly includes a frame, a second pin shaft horizontally arranged on both sides of the frame, a third pin shaft vertically arranged in the frame, and a slide plate rotatably mounted on the second pin shaft; a guide groove is arranged on the base, and the slide box assembly is slidably arranged in the guide groove by the slide plate.

[0011] Furthermore, the first tube rolling cylinder, the second tube rolling cylinder and one end of the connecting rod assembly are rotatably sleeved on the third pin shaft.

[0012] Furthermore, the main clamping mechanism includes a rear clamping block, two side clamping blocks symmetrically hinged at both ends of the rear clamping block, and two clamping arms respectively hinged to the two side clamping blocks; the clamping arms, side clamping blocks and rear clamping block are all arc-shaped structures and are enclosed to form a cylindrical structure; a clamping cylinder is hingedly connected between the two clamping arms, which is used to clamp or loosen the cylindrical inner ring of the main clamping mechanism.

[0013] Furthermore, a first mounting seat hinged to the first tube rolling cylinder or the second tube rolling cylinder is provided on the side clamping block; and a third mounting seat hinged to the connecting rod assembly is provided in the middle of the rear clamping block.

[0014] Furthermore, the pressurizing cylinder is hinged between the side clamping block and the base.

[0015] Furthermore, the main clamping mechanism and the auxiliary clamping mechanism are provided with latches for installing the reducing block.

[0016] Furthermore, a control mechanism is arranged on the base, and the control mechanism includes a power interface, a hydraulic interface, a mechanical interface and a remote control interface.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges a rotatable second clamping body in the base of the tube rolling machine so that when interference occurs between the base and the sleeve, the second clamping body can maintain stable contact with the sleeve to prevent friction and wear between the second clamping body and the sleeve, thereby protecting the sleeve and the second clamping body, reducing maintenance frequency, and reducing construction costs; at the same time, by arranging a connecting rod assembly with a long waist hole hinged connection, it has high angle adaptability and suitable length adaptability, so that it can meet the traction and centering effect of the main clamping mechanism during the tube rolling process, while reducing the stress on itself and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a structural schematic diagram of a tube rolling machine.

[0019] Figure 2 The present invention is a schematic diagram of the base structure of a tube rolling machine.

[0020] Figure 3 The present invention is a schematic diagram of the main clamping mechanism of a tube rolling machine.

[0021] Figure 4 The present invention is a schematic diagram of the main clamping mechanism of a tube rolling machine viewed from above.

[0022] Figure 5 The present invention is a schematic diagram of the structure of a secondary clamping mechanism of a tube rolling machine.

[0023] Figure 6 The present invention is a schematic diagram of a top view of the auxiliary clamping mechanism of a tube rolling machine.

[0024] Figure 7 The present invention is a schematic structural diagram of a connecting rod assembly of a tube rolling machine.

[0025] Figure 8 The figure is a schematic diagram of the first connecting rod structure of a tube rolling machine of the present invention.

[0026] Fig. 9 The figure is a schematic diagram of the second connecting rod structure of a tube rolling machine of the present invention.

[0027] Fig.10 The figure is a schematic diagram of the third connecting rod structure of a tube rolling machine according to the present invention.

[0028] Fig.11 The present invention is a schematic structural diagram of a slide box assembly of a tube rolling machine.

[0029] Fig.12 The present invention is a schematic diagram of the frame structure of a tube rolling machine.

[0030] in: Base 1, main clamping mechanism 2, auxiliary clamping mechanism 3, tube rolling mechanism 4, pressure cylinder 5, control mechanism 6; The fourth mounting seat 11, the guide groove 12, the first supporting seat 13, the second supporting seat 14, the guide key 15, the limit plate 16, the clamping cylinder 21, the clamping arm 22, the side clamping block 23, the rear clamping block 24, the latch 25, the first mounting seat 231, the second mounting seat 232, and the third mounting seat 241; A first clamping body 31, a second clamping body 32, a fifth mounting seat 311, a guide groove 312, and a first pin shaft 321; The first tube rolling cylinder 41, the second tube rolling cylinder 42, the connecting rod assembly 43, the sliding box assembly 44, the first connecting rod 431, the second connecting rod 432, the third connecting rod 433, the frame 441, the sliding plate 442, the second pin 443, the third pin 444, the first vertical hole 4311, the first transverse hole 4312, the second transverse hole 4321, the second vertical hole 4331, and the third transverse hole 4332; Power supply interface 61 , hydraulic interface 62 , mechanical interface 63 , remote control interface 64 . DETAILED DESCRIPTION

[0031] See also Figure 1 to Figure 12 The present invention relates to a tube rolling machine, comprising a base 1, a main clamping mechanism 2, a secondary clamping mechanism 3, a tube rolling mechanism 4 connecting the main clamping mechanism 2 and the base 1, a pressurized oil cylinder 5 and a control mechanism 6; The main clamping mechanism 2 comprises a rear clamping block 24, two side clamping blocks 23 symmetrically hinged at both ends of the rear clamping block 24, and two clamping arms 22 respectively hinged to the two side clamping blocks 23; the clamping arms 22, the side clamping blocks 23 and the rear clamping block 24 are all arc-shaped structures and enclose a cylindrical structure; a clamping cylinder 21 is hingedly connected between the two clamping arms 22 for clamping or loosening the cylindrical inner ring of the main clamping mechanism 2; a first mounting seat 231 is provided on the side clamping block 23, and a third mounting seat 241 is provided in the middle of the rear clamping block 24; the pressurizing cylinder 5 is hinged between the second mounting seat 232 of the side clamping block 23 and the second supporting seat 14 of the base 1; pins 25 are provided on the clamping arms 22, the side clamping blocks 23 and the rear clamping blocks 24 for installing reducers to adapt to casings of different diameters; The auxiliary clamping mechanism 3 is arranged inside the base 1, and includes a first clamping body 31 and a second clamping body 32 with an arc-shaped clamping surface; the first clamping body 31 is set on the base 1 for translational sliding, and a reducing block is installed and fixed on the first clamping body 31 through a pin 25 to adapt to sleeves of different specifications and diameters; the two ends of the second clamping body 32 are rotatably set on the base 1, and in order to ensure that sufficient clamping support force is provided to the second clamping body 32 when clamping the sleeve, a limit plate 16 is set on the base 1 to support and limit the back of the second clamping body 32. A guide groove 312 and a guide key 15 for translational guidance, and a thrust cylinder for pushing the first clamping body 31 to translate are arranged between the first clamping body 31 and the base 1; specifically, the guide groove 312 and the guide key 15 are respectively arranged on the first clamping body 31 and the base 1, and the two only need to be separately arranged on the first clamping body 31 or the base 1 to achieve the purpose of sliding fit; a fourth mounting seat 11 and a fifth mounting seat 311 are respectively arranged at corresponding positions on the base 1 and the first clamping body 31, and the thrust cylinder is hingedly installed on the fourth mounting seat 11 and the fifth mounting seat 311, which is not shown in the accompanying drawings. The second clamping body 32 is a semicircular arc structure, and a first pin shaft 321 is arranged at both ends thereof. The first pin shaft 321 is rotatably embedded in a first support seat 13 which is arranged on the base 1 and has a U-shaped groove structure, that is, the second clamping body 32 can rotate around the first pin shaft 321; when the auxiliary clamping mechanism 3 releases the sleeve, that is, the first clamping body 31 is contracted by the thrust cylinder and detaches from the sleeve, but at this time the second clamping body 32 still maintains contact with the sleeve. When the base 1 is lifted or lowered relative to the sleeve, that is, when the base 1 and the sleeve move relative to each other, thanks to the fact that the second clamping body 32 itself can be turned upside down, it can still maintain stable contact with the sleeve to avoid relative sliding. Therefore, even if there is interference from the axis deviation between the auxiliary clamping mechanism 3 and the sleeve, it can still avoid the second clamping body 32 and the sleeve from generating additional friction to damage the sleeve and reduce the service life of the second clamping body 32, thereby reducing the maintenance frequency; The tube rolling mechanism 4 comprises a first tube rolling oil cylinder 41, a second tube rolling oil cylinder 42, a connecting rod assembly 43 and a sliding box assembly 44 slidably arranged on the base 1; the sliding box assembly 44 comprises a frame 441, a second pin shaft 443 horizontally arranged on both sides of the frame 441, a third pin shaft 444 vertically arranged in the frame 441, and a slide plate 442 rotatably sleeved on the second pin shaft 443; a guide groove 12 is arranged on the base 1, and the slide plate assembly 44 is slidably arranged in the guide groove 12 by relying on the slide plate 442; The first tube rolling oil cylinder 41 and the second tube rolling oil cylinder 42 are symmetrically hinged between the first mounting seat 231 of the main clamping mechanism 2 and the third pin 444 of the slide box assembly 44. In this embodiment, the first mounting seat 231 is a shaft-hole hinge structure; The connecting rod assembly 43 is hinged between the third mounting seat 241 of the main clamping mechanism 2 and the third pin shaft 444 of the slide box assembly 44. The third mounting seat 241 in this embodiment is an axial hole hinge structure; the connecting rod assembly 43 includes a plurality of connecting rods hingedly connected to the third mounting seat 241 and the third pin shaft 444 in sequence, and the connecting rods are movably connected through pin shafts and pin holes, wherein at least one pin hole is a long waist hole, which is used to match the change of the spatial distance between the main clamping mechanism 2 and the slide box assembly 44 during the tube rolling process. In addition to the up and down lifting displacement, the main clamping mechanism 2 relative to the slide box assembly 44 also has the left and right torsional displacement during the tube rolling. Therefore, the connecting rod assembly 43 needs to adapt to the changes in the angle and length of the spatial distance, otherwise it is easy to have excessive tensile and torsional stresses and affect the service life; Specifically, the connecting rod assembly 43 of the present embodiment includes a first connecting rod 431, a second connecting rod 432 and a third connecting rod 433 which are hingedly connected in sequence; the first connecting rod 431 is a "cross" structure, and is provided with a first vertical hole 4311 and a first transverse hole 4312, wherein the first vertical hole 4311 is hingedly connected to the third mounting seat 241; two second transverse holes 4321 are arranged at both ends of the second connecting rod 432, which are respectively hingedly connected to the front and rear connecting rods through an axial hole structure; the third connecting rod 433 is a "cross" structure, and is provided with a second vertical hole 4331 and a third transverse hole 4332, wherein the second vertical hole 4331 is hingedly connected to the third pin 444; the first transverse hole 4312 of the first connecting rod 431 and the third transverse hole 4332 of the third connecting rod 433 are respectively hingedly connected to the two second transverse holes 4321 of the second connecting rod 432 through a pin, so as to realize the connection between the connecting rods. The first and second connecting rods 431 and 432 are connected in sequence; at least one of the first transverse hole 4312, the second transverse hole 4321 and the third transverse hole 4332 is a long waist hole. In this embodiment, the first transverse hole 4312 is set as a long waist hole; because in the process of rolling the tube, the rear clamping block 24 of the main clamping mechanism 2 is lifted up and down and twisted left and right, and there is a periodic change in the angle deflection and length distance between it and the slide box assembly 44, the two ends of the connecting rod assembly 43 are hinged to the rear clamping block 24 and the slide box assembly 44 respectively, and the first connecting rod 431, the second connecting rod 432 and the third connecting rod 433 are hinged through transverse holes to meet the angle deflection requirements between the rear clamping block 24 and the slide box assembly 44; the first transverse hole 4312 is a long waist hole, leaving space for the connecting rod assembly 43 to extend in the length direction, meeting the length distance change requirements between the rear clamping block 24 and the slide box assembly 44; The control mechanism 6 includes a power interface 61, a hydraulic interface 62, a mechanical interface 63 and a remote control interface 64, which are respectively used to control the normal operation of the functions or actions of various components of the pipe rolling machine. The power source can be provided by an independent hydraulic pump station, or by the power system of the rotary drilling rig and the crawler crane. When working, the pipe rolling machine needs to be connected to the rotary drilling rig or the crawler crane through a mechanical interface to fully utilize the lifting and walking capabilities of the rotary drilling rig or the crawler crane, thereby achieving the accuracy of the construction pile hole and the convenience of equipment transfer and transportation; During casing drilling construction, the pressurized oil cylinder 5 drives the main clamping mechanism 2 to rise, and one end of the connecting rod assembly 43 rises accordingly during this process, that is, the angle of the connecting rod assembly 43 rises and the length is lengthened, and the stress it is subjected to does not increase additionally. The clamping cylinder 21 extends to allow the main clamping mechanism 2 to clamp the casing; the auxiliary clamping mechanism 3 releases the casing, the pressurized oil cylinder 5 contracts, and the base 1 rises to leave space for the casing to descend. During this process, the second clamping body 32 maintains stable contact with the casing by rotating, and does not rise synchronously with the base 1, thereby avoiding the interference between the casing and the base 1 causing friction and wear between the second clamping body 32 and the casing, protecting the casing and reducing maintenance costs; the tube rolling mechanism 4 drives the main clamping mechanism 2 to twist the casing left and right to perform the tube rolling drilling action, and the casing is gradually drilled downward, and the connecting rod assembly 43 also follows the synchronous adaptation changes in the angle and length direction, withstands less stress, and improves its service life.

[0032] When recovering the casing, the auxiliary clamping mechanism 3 releases the casing, the main clamping mechanism 2 clamps the casing and performs a tube-rubbing action, the pressurized oil cylinder 5 drives the main clamping mechanism 2 to lift, and the casing rises; the auxiliary clamping mechanism 3 clamps the casing, and the main clamping mechanism 2 releases the casing; the pressurized oil cylinder 5 drives the main clamping mechanism 2 to descend; the aforementioned actions are repeated to gradually lift the casing until the casing is separated from the pile foundation.

[0033] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A tube rolling machine, comprising a base (1), a main clamping mechanism (2), a secondary clamping mechanism (3), a tube rolling mechanism (4) connecting the main clamping mechanism (2) and the base (1), and a pressurized oil cylinder (5), characterized in that: The auxiliary clamping mechanism (3) is arranged inside the base (1), and comprises a first clamping body (31) having an arc-shaped clamping surface and a second clamping body (32); the first clamping body (31) is arranged on the base (1) in a translationally slidable manner; and the two ends of the second clamping body (32) are rotatably arranged on the base (1); The tube rolling mechanism (4) comprises a first tube rolling cylinder (41), a second tube rolling cylinder (42), a connecting rod assembly (43) and a sliding box assembly (44) slidably arranged on the base (1); the first tube rolling cylinder (41) and the second tube rolling cylinder (42) are symmetrically hinged between the main clamping mechanism (2) and the sliding box assembly (44); the connecting rod assembly (43) comprises a plurality of connecting rods hingedly connected in sequence between the main clamping mechanism (2) and the sliding box assembly (44), and the connecting rods are movably connected to each other through pins and pin holes, wherein at least one pin hole is a long waist hole, which is used to match the change in the spatial distance between the main clamping mechanism (2) and the sliding box assembly (44) during the tube rolling process.

2. The tube rolling machine according to claim 1, characterized in that: A guide groove (312) and a guide key (15) for translational guidance, and a thrust cylinder for pushing the first clamping body (31) for translational movement are provided between the first clamping body (31) and the base (1).

3. The tube rolling machine according to claim 1, characterized in that: The second clamping body (32) is a semicircular arc structure, with first pins (321) provided at both ends thereof; the first pin (321) is rotatably embedded in a first support seat (13) provided on the base (1) and having a U-shaped groove structure.

4. The tube rolling machine according to claim 1, characterized in that: The base (1) is provided with a limiting plate (16) for supporting and limiting the back of the second clamping body (32).

5. The tube rolling machine according to claim 1, characterized in that: The connecting rod assembly (43) comprises a first connecting rod (431), a second connecting rod (432) and a third connecting rod (433); the first connecting rod (431) is a "cross" structure, provided with a first vertical hole (4311) and a first transverse hole (4312); two second transverse holes (4321) are provided at both ends of the second connecting rod (432); the third connecting rod (433) is a "cross" structure, provided with a second vertical hole (4331) and a third transverse hole (4332); the first vertical hole (4311) is hinged to the main clamping mechanism (2), the first transverse hole (4312) and the third transverse hole (4332) are respectively hinged to the two second transverse holes (4321) via a pin, and the second vertical hole (4331) is hinged to the slide box assembly (44).

6. The tube rolling machine according to claim 5, characterized in that: At least one of the first transverse hole (4312), the second transverse hole (4321), and the third transverse hole (4332) is a long waist hole.

7. The tube rolling machine according to claim 1, characterized in that: The slide box assembly (44) comprises a frame (441), a second pin shaft (443) horizontally arranged on both sides of the frame (441), a third pin shaft (444) vertically arranged in the frame (441), and a slide plate (442) rotatably mounted on the second pin shaft (443); a guide groove (12) is arranged on the base (1), and the slide box assembly (444) is slidably arranged in the guide groove (12) by relying on the slide plate (442).

8. The tube rolling machine according to claim 7, characterized in that: The first tube rolling cylinder (41), the second tube rolling cylinder (42) and one end of the connecting rod assembly (43) are rotatably sleeved on the third pin shaft (444).

9. The tube rolling machine according to claim 1, characterized in that: The main clamping mechanism (2) comprises a rear clamping block (24), two side clamping blocks (23) symmetrically hinged at both ends of the rear clamping block (24), and two clamping arms (22) respectively hinged to the two side clamping blocks (23); the clamping arms (22), the side clamping blocks (23) and the rear clamping block (24) are all arc-shaped structures and enclose a cylindrical structure; a clamping cylinder (21) is hingedly connected between the two clamping arms (22) for clamping or loosening the cylindrical inner ring of the main clamping mechanism (2).

10. The tube rolling machine according to claim 9, characterized in that: A first mounting seat (231) hinged to the first tube rolling cylinder (41) or the second tube rolling cylinder (42) is provided on the side clamping block (23); and a third mounting seat (241) hinged to the connecting rod assembly (43) is provided in the middle of the rear clamping block (24).

11. The tube rolling machine according to claim 9, characterized in that: The pressurizing cylinder (5) is hinged between the side clamping block (23) and the base (1).

12. The tube rolling machine according to claim 1, characterized in that: The main clamping mechanism (2) and the auxiliary clamping mechanism (3) are provided with latches (25) for installing a reducing block.

13. The tube rolling machine according to claim 1, characterized in that: A control mechanism (6) is arranged on the base (1), and the control mechanism (6) comprises a power supply interface (61), a hydraulic interface (62), a mechanical interface (63) and a remote control interface (64).

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