A righting device and modular clamp assembly
The modular clamp assembly device solves the problem of straightening drill pipes of different specifications, enabling simultaneous straightening of drill pipes and casings, reducing manual labor intensity and costs, and improving the construction efficiency of drilling rigs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD
- Filing Date
- 2023-09-21
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the straightening device cannot adapt to different drill pipe specifications, resulting in frequent replacements, increasing the intensity of manual labor, and it cannot simultaneously straighten the drill pipe and casing during casing construction, resulting in poor interchangeability and high cost.
A modular clamp assembly device was designed, including a lower fixed clamp, an upper fixed clamp, and a shackle clamp. It can straighten different drill pipe specifications through a hydraulic control system and support the simultaneous straightening of drill pipe and casing. It can quickly switch between two-clamp and three-clamp modes.
It enables the straightening of drill pipes and casings of different diameters, reduces manual labor intensity, improves interchangeability and cost-effectiveness, and meets the diverse construction needs of drilling rigs.
Smart Images
Figure CN117231141B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of drilling equipment technology, and particularly relates to a straightening device and a modular clamp combination device. Background Technology
[0002] A multi-functional drilling rig is a piece of equipment used for construction such as foundation pit micro-piling, foundation pit support, water conservancy and hydropower engineering reinforcement, slope anchoring, pipe roof support, tunnel grouting, geological exploration, and high-pressure jet grouting. The clamp's main function is to assist the power head 111 in assembling and disassembling the drill rod 115. However, a single drill rod on a multi-functional drilling rig can be several meters long. When the drilling rig is operating horizontally or drilling inclined holes, the drill rod's center may deviate from the clamp's center due to flexible deformation. Figure 1 If the drill rod 115 needs to be aligned with the center of the clamp by the straightening device 114, otherwise the clamp slips will break due to uneven force when the rod is removed. The clamps include the uncoupling clamp 112 and the fixing clamp 113.
[0003] Current technology for straightening devices mostly uses a fixed diameter, such as Figure 2 When changing the drill pipe specifications, the straightening device 114 needs to be replaced, increasing the labor intensity. When casing construction is carried out, it is impossible to straighten the casing and drill pipe simultaneously. In the current technology, the shackle clamp 112 and the fixed clamp 113 are connected to the drill mast 117 through the clamp seat 116, and the clamp form is fixed. When the construction method changes, the entire clamp needs to be replaced, resulting in poor interchangeability and high cost. Figure 2 In the middle, the shackle clamp 112 is located on the shackle base 118. Summary of the Invention
[0004] The purpose of this invention is to provide a straightening device and a modular clamp assembly that can accommodate multiple drill pipe specifications during drill pipe construction, and can simultaneously straighten the drill pipe and casing during casing construction. It can also quickly switch between two-clamp and three-clamp modes, and has the function of assisting in pulling out the drill pipe.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a straightening device and a modular clamp assembly, including: a lower fixed clamp, an upper fixed clamp, an upper fixed clamp seat, a shackle clamp base, a shackle clamp, a shackle cylinder, a lifting cylinder, an upper straightening device, a lower straightening device, and a hydraulic control system for the straightening device. The lower fixed clamp is mounted on the bottom platform of the drill mast via an adjusting block; the upper fixed clamp is mounted on the upper fixed clamp seat, and the upper fixed clamp seat is mounted on the drill mast guide rail; The uncoupling clamp is mounted inside the uncoupling clamp base via a uncoupling cylinder; the uncoupling clamp base is mounted on the drill mast guide rail; the uncoupling cylinder provides power for the rotation of the uncoupling clamp, causing the uncoupling clamp to rotate relative to the uncoupling clamp base. The lifting cylinder is connected to the uncoupling pliers base and is used to provide power for the uncoupling pliers base to slide on the drill mast guide rail and to adjust the position of the uncoupling pliers. The upper straightening device is mounted on the shackle clamp base, the lower straightening device is mounted on the bottom platform of the drill mast, and the lower fixed clamp, upper fixed clamp and shackle clamp are located between the upper straightening device and the lower straightening device; The hydraulic control system of the straightening device is used to control the lifting height of the upper and lower straightening devices.
[0006] Furthermore, the device also includes an adjustment block, through which the lower fixing clamp is mounted on the bottom platform of the drill mast; The upper fixing clamp is mounted on the upper fixing clamp seat by bolts; The upper fixed clamp seat is mounted on the drill mast guide rail by bolts; The adjusting block, the upper fixed clamp seat, and the shackle clamp base are used to adjust the center height of the lower fixed clamp, the upper fixed clamp, and the shackle clamp, respectively, so that the center height of the clamp is consistent with the center height of the power head.
[0007] Furthermore, the shackle clamp base includes: a shackle seat, a nylon slider, a pressure plate, and a pull lug; There are two nylon sliders, one on the left and one on the right, which are respectively installed on the guide rails on both sides of the drill mast and can slide up and down along the guide rails of the drill mast. There are two lugs, one on the left and one on the right, located below the guide rails on both sides of the drill mast; The shackle seat is located above the guide rails on both sides of the drill mast. The left and right pull lugs and the left and right nylon sliders are fixed to the left and right sides of the shackle seat by bolts; The shackle seat is provided with a circular guide rail that matches the shape of the shackle clamp, and the shackle clamp is provided with a groove that mates with the circular guide rail. The shackle clamp is placed on the circular guide rail of the shackle seat, and the pressure plate is used to press the shackle clamp and restrict the shackle clamp from rotating around the clamp center. The pressure plate is fixed to the shackle seat by bolts.
[0008] Furthermore, the lever of the shackle cylinder is hinged to the shackle clamp, and the cylinder barrel of the shackle cylinder is hinged to the base of the shackle clamp.
[0009] Furthermore, the cylinder barrel of the lifting cylinder is hinged to the bottom hinge lug of the drill mast, and the cylinder rod of the lifting cylinder is hinged to the pull lug of the shackle clamp base. The lifting cylinder corresponds to the pull lug, with one on each side.
[0010] Furthermore, the shackle seat is provided with an upper straightening device support seat, and the upper straightening device is installed on the upper straightening device support seat.
[0011] Furthermore, the upper straightening device includes: a straightening cylinder, a lifting device, and a pin; The cylinder of the straightening cylinder is hinged to the support seat of the upper straightening device by a pin, and the cylinder rod of the straightening cylinder is hinged to the lifting device by a pin. The extension and retraction of the straightening cylinder drives the lifting device to rise and fall. The lifting device is hinged to the bottom support of the drill mast via a pin. The lower straightening device has the same structure as the upper straightening device.
[0012] Furthermore, the lifting device includes: a lifting frame, rollers, and a pin; The rollers are connected to the lifting frame via pins, and the lifting frame is used to support the drill rod.
[0013] Furthermore, the hydraulic control system of the straightening device includes: a hydraulic pump, a solenoid directional valve, a solenoid throttle valve, and a controller; The hydraulic pump is connected to hydraulic oil; the outlet of the hydraulic pump is divided into two paths, each connected to a solenoid directional valve. One electromagnetic reversing valve has port c connected to port a of the upper straightening device's straightening cylinder, and port d of the electromagnetic reversing valve is connected to port b of the upper straightening device's straightening cylinder. The c port of the other electromagnetic reversing valve is connected to the a port of the straightening cylinder of the lower straightening device, and the d port of the electromagnetic reversing valve is connected to the b port of the straightening cylinder of the lower straightening device. An electromagnetic throttle valve is installed between the d port of each of the two electromagnetic directional valves and the b port of their respective connected centralizing cylinders. Both the electromagnetic reversing valve and the electromagnetic throttle valve are connected to the controller. The controller is used to control the energization and de-energization of the electromagnetic reversing valve, the extension and retraction of the straightening cylinder, and the opening degree of the electromagnetic throttle valve.
[0014] Furthermore, the hydraulic control system of the straightening device also includes a safety valve; The safety valve is located on the main oil line at the outlet of the hydraulic pump.
[0015] Furthermore, the upper and lower straightening devices integrate magnetic displacement sensors within their respective straightening cylinders to detect the amount of cylinder extension displacement.
[0016] Furthermore, the controller is specifically used for, The corresponding lifting height is preset according to different drill pipe specifications; The corresponding lifting height is set in advance according to the specifications of the pipes used during drilling operations.
[0017] Furthermore, the controller is specifically used for, When the drill pipe needs to be straightened during construction, the same electrical signal is sent to two solenoid directional valves and the same opening signal is sent to two solenoid throttle valves at the same time. This controls the straightening cylinders of the upper straightening device and the lower straightening device to extend synchronously at the same speed, thereby driving the lifting devices in the upper and lower straightening devices to lift synchronously. The displacement of the cylinder extension detected by the magnetic displacement sensor is obtained and converted into a lifting height. When the set lifting height is reached, the two electromagnetic reversing valves are de-energized.
[0018] Furthermore, the controller is specifically used for, When changing drill pipe specifications, if the diameter of the new drill pipe is smaller than the previous one, the same electrical signal is sent to the electromagnets in the left position of the two solenoid directional valves, and the same opening signal is sent to the two solenoid throttle valves to control the straightening cylinders of the upper and lower straightening devices to continue extending; the cylinder extension displacement detected by the magnetic displacement sensor is obtained and converted into lifting height until the set lifting height is reached, and then the two solenoid directional valves are de-energized. If the diameter of the replaced drill pipe is larger than that of the previous drill pipe, the same electrical signal is sent to the electromagnets in the right position of the two solenoid directional valves, and the same opening signal is sent to the two solenoid throttle valves, controlling the directional cylinders of the upper and lower directional devices to retract simultaneously; the cylinder extension displacement detected by the magnetic displacement sensor is obtained and converted into lifting height until the set lifting height is reached, and the two solenoid directional valves are de-energized.
[0019] Furthermore, the controller is specifically used for, During casing construction, when the drill pipe and casing need to be aligned, electrical signals are sent to two solenoid directional valves to energize them. Based on the diameters of the drill pipe and casing, different opening signals are sent to two solenoid throttle valves to control the simultaneous extension of the alignment cylinders of the upper and lower alignment devices. The extension speed is determined by the opening of the two solenoid throttle valves. The alignment cylinders drive the lifting devices in the upper and lower alignment devices to lift the drill pipe and casing, ensuring that the time to reach the designated lifting height is the same. The displacement of the cylinder extension detected by the magnetic displacement sensor is obtained and converted into a lifting height. When the set lifting height is reached, the two electromagnetic reversing valves are de-energized.
[0020] Furthermore, under the casing construction condition, the combined device adopts a three-clamp mode. In the three-clamp mode, the lower fixed clamp is used to clamp the casing, the upper fixed clamp is used to clamp the next drill pipe, and the clamping cylinder of the uncoupling clamp is used to clamp the previous drill pipe. The uncoupling cylinder pushes the uncoupling clamp to rotate and disassemble the drill pipe.
[0021] Furthermore, when a drill bit gets stuck, the drill rod is clamped by the shackle clamp, the pull-out cylinder extends, and the shackle clamp base slides on the drill mast guide rail to assist in the pull-out.
[0022] Furthermore, under drill pipe operation conditions, the combined device adopts a two-clamp configuration. In the two-clamp mode, the upper fixed clamp and the upper fixed clamp seat are removed, the lower fixed clamp is used to clamp the next drill rod, the clamping cylinder of the uncoupling clamp is used to clamp the previous drill rod, and the uncoupling cylinder is used to push the uncoupling clamp to rotate, thereby disassembling the drill rod.
[0023] The beneficial effects of this invention are as follows: (1) The present invention provides a combination of a straightening device and a modular clamp, which can not only straighten drill rods of different diameters, but also straighten drill rods and casing drill rods separately. This solves the problem of frequently changing the straightening device when changing drill rods of different diameters and the inability to straighten drill rods and casings separately during casing construction, thus reducing the intensity of manual labor.
[0024] (2) The present invention can also quickly switch between two-clamp system and three-clamp system to meet the needs of drilling rig for drilling rod and casing respectively. It has good interchangeability and low cost. Attached Figure Description
[0025] Figure 1 A schematic diagram of the existing straightening device and clamp assembly; Figure 2 The existing straightening device structure; Figure 3 This is an assembly diagram of the straightening device and modular clamp combination device provided by the present invention. Figure 4(a) is a schematic diagram of the shackle clamp base and shackle clamp after assembly in this invention; Figure 4(b) is a schematic diagram of the unassembled shackle clamp base and shackle clamp in this invention; Figure 5 This is the structure of the straightening device in the present invention; Figure 6This is the structure of the lifting device in this invention; Figure 7 A schematic diagram of the construction conditions of the straightening device and modular clamp combination device provided by the present invention; Figure 8 This is a schematic diagram of the modular clamp conversion in this invention; Figure 9 This is a schematic diagram of the control principle of the hydraulic system for the straightening device in this invention. Detailed Implementation
[0026] The present invention will now be further described. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0027] This invention provides a straightening device and a modular clamp assembly, see below. Figure 3 It includes: a lower fixed clamp 1, an adjusting block 2, an upper fixed clamp 3, an upper fixed clamp seat 4, a shackle clamp base 5, a shackle clamp 6, a shackle cylinder 7, a lifting cylinder 8, an upper straightening device 9, a lower straightening device 10, and a straightening device hydraulic control system 11.
[0028] Specifically, the lower fixed clamp 1 and the adjusting block 2 are installed on the bottom platform of the drill mast 117 by bolts; the upper fixed clamp 3 is connected to the upper fixed clamp seat 4 by bolts, and the upper fixed clamp seat 4 is installed on the drill mast guide rail by bolts.
[0029] The shackle clamp 6 is installed inside the shackle clamp base 5 via the shackle cylinder 7 and is fixed by the upper and lower pressure plates 5-3. The shackle clamp 6 can rotate relative to the shackle clamp base 5. The shackle clamp base 5 is installed on the drill mast guide rail and can slide up and down along the guide rail.
[0030] It should be noted that the adjusting block 2 is used to adjust the center height of the lower fixed clamp 1 so that the center height of the clamp is consistent with the center height of the power head.
[0031] Similarly, the upper fixed clamp base 4 and the shackle clamp base 5 are designed to ensure that the center height of the clamp is consistent with the height of the power head.
[0032] Referring to Figures 4(a) and 4(b), the shackle clamp base 5 includes: a shackle seat 5-1, a nylon slider 5-2, a pressure plate 5-3, and a pull lug 5-4. There are two nylon sliders 5-2, one on the left and one on the right, which are respectively installed on the guide rails on both sides of the drill mast and can slide up and down along the guide rails. There are two pull lugs, one on the left and one on the right, located below the guide rails on both sides of the drill mast. Shackle seat 5-1 is placed above the guide rails on both sides of the drill mast. The left and right pull ears and the left and right nylon sliders are fixed to the left and right sides of the shackle seat 5-1 by bolts.
[0033] The shackle seat 5-1 is provided with a semi-circular guide rail (which can be imagined as a circular guide rail; since the clamp is open, it is designed as a semi-circular shape, serving the same purpose). The shackle clamp 6 is provided with a semi-circular groove that mates with the guide rail. The shackle clamp 6 is placed on the guide rail of the shackle seat 5-1. The pressure plate 5-3 is used to press the shackle clamp 6, restricting the shackle clamp 6 to rotate only around the center of the clamp. The pressure plate 5-3 is fixed to the shackle seat 5-1 by bolts.
[0034] The lever of the shackle cylinder 7 is hinged to the shackle clamp 6, and the cylinder barrel is hinged to the shackle clamp base 5, providing power for the rotation of the shackle clamp 6.
[0035] See Figure 3 The cylinder barrel of the lifting cylinder 8 is hinged to the bottom hinge lug of the drill mast, and the cylinder rod is hinged to the pull lug 5-4 of the shackle clamp base. There is one lifting cylinder on each side of the lifting cylinder 8 to provide power for the up and down sliding of the shackle clamp base 5.
[0036] The lifting cylinder 8 is used to adjust the position of the uncoupling clamp and expand the range of drill pipe uncoupling positions. If the drill pipe connection position is higher than the position between the upper and lower clamps, the lifting cylinder can be extended to move the uncoupling clamp base and the uncoupling clamp upward to find a suitable uncoupling position.
[0037] The shackle seat 5-1 is provided with an upper straightening device support seat 13, and the upper straightening device 9 is installed on the upper straightening device support seat 13. See Figure 5 The upper straightening device includes: a straightening cylinder 9-1, a lifting device 9-2, a first pin 9-3, a second pin 9-4, and a third pin 9-5.
[0038] The cylinder barrel of the straightening cylinder 9-1 is hinged to the support seat of the upper straightening device through pin 3 9-5, and the cylinder rod of the straightening cylinder 9-1 is hinged to the lifting device 9-2 through pin 1 9-3. The lifting device 9-2 can be raised or lowered by extending and retracting the straightening cylinder 9-1. The hoisting device 9-2 is hinged to the bottom support of the drill mast via pin 9-4.
[0039] See Figure 3 The bottom platform of the drill mast is equipped with a lower straightening device support seat 12; The lower straightening device 10 is placed on the lower straightening device support 12, and its structure is the same as that of the upper straightening device.
[0040] See Figure 6 The lifting device includes: a lifting frame 9-2-1, rollers 9-2-2, and a pin 9-2-3. Rollers 9-2-2 are connected to the lifting frame 9-2-1 via pin 9-2-3, and rollers 9-2-2 can rotate around pin 9-2-3. The lifting frame 9-2-1 is used to support the drill rod.
[0041] It should be noted that the lifting device can also be of other forms, as long as it can lift the drill rod.
[0042] It should be noted that the straightening cylinder and the lifting cylinder can also be replaced by similar components such as electric actuators.
[0043] See Figure 9 The hydraulic control system 11 for the straightening device includes: a hydraulic pump 11-1, a safety valve 11-2, a solenoid directional valve 11-3, a solenoid directional valve 11-4, a solenoid throttle valve 11-5, a solenoid throttle valve 11-6, a straightening cylinder 9-1 for the upper straightening device, a straightening cylinder 10-1 for the lower straightening device, and a controller 11-9.
[0044] The hydraulic oil is split into two paths by the hydraulic pump 11-1, which are connected to the solenoid directional valves 11-3 and 11-4 respectively. One electromagnetic reversing valve 11-3 has port c connected to port a of the straightening cylinder 9-1 of the upper straightening device, and port d of the electromagnetic reversing valve 11-3 is connected to port b of the straightening cylinder 9-1 of the upper straightening device. An electromagnetic throttle valve 11-5 is installed between port d and port b. Another electromagnetic reversing valve 11-4 has port c connected to port a of the straightening cylinder 10-1 of the lower straightening device, and port d of the electromagnetic reversing valve 11-4 is connected to port b of the straightening cylinder 10-1 of the lower straightening device. An electromagnetic throttle valve 11-6 is installed between port d and port b. Electromagnets M1 and M2 in electromagnetic directional valve 11-3, electromagnets N1 and N2 in electromagnetic directional valve 11-4, and P of electromagnetic throttle valve 10-5 and Q of electromagnetic throttle valve 10-6 are all connected to controller 11-9.
[0045] The upper straightening device's straightening cylinder 9-1 and the lower straightening device's straightening cylinder 10-1 are equipped with magnetic displacement sensors to detect the amount of cylinder extension displacement.
[0046] It should be noted that the safety valve 11-2 is located on the main oil line at the outlet of the hydraulic pump 11-1. By setting a safety pressure, it protects the oil line and prevents safety issues caused by system pressure buildup due to mechanical jamming or other reasons.
[0047] The working principle of the hydraulic system controlling the straightening device is as follows: When controller 11-9 controls solenoid directional valve 11-3 to be energized, the straightening cylinder 9-1 of the upper straightening device can be extended. When controller 11-9 controls solenoid directional valve 11-4 to be energized, the straightening cylinder 10-1 of the lower straightening device can be extended. When controller 11-9 controls solenoid directional valve 11-3 to be energized, the retraction of the straightening cylinder 9-1 of the upper straightening device can be achieved. When controller 11-9 controls solenoid directional valve 11-4 to be energized, the retraction of the straightening cylinder 10-2 of the lower straightening device can be achieved. The magnetic displacement sensors of the upper straightening device's straightening cylinder 9-1 and the lower straightening device's straightening cylinder 10-1 detect the cylinder extension amount. It should be noted that the controller is pre-set with different lifting heights according to different drill pipe specifications, thereby achieving the straightening effect for drill pipes of different diameters.
[0048] The controller 11-9 controls the extension and retraction speed of the straightening cylinder 9-1 and the straightening cylinder 10-1 by controlling the opening of the electromagnetic throttle valve 11-5 and the electromagnetic throttle valve 11-6.
[0049] When the controller 11-9 provides the same electrical signal to the two electromagnetic throttle valves, the two centralizing cylinders can extend and retract synchronously. When the controller 11-9 provides different electrical signals to the two electromagnetic throttle valves, asynchronous extension and retraction are achieved.
[0050] The above structure operates as follows under different working conditions: Drill pipe operation conditions: When performing horizontal or sloping construction, the drill rod may need to be straightened due to flexible deformation. In this case, the upper and lower straightening devices work simultaneously. (See [link to documentation]). Figure 7 In the left figure, drill rod 115 is connected to the power head via a thread. The power head rotates to drill, and the straightening device guides the drill rod. In this working condition, the controller 11-9 controls the solenoids M1 of electromagnetic directional valve 11-3 and N1 of electromagnetic directional valve 11-4 to simultaneously receive the same electrical signal. Simultaneously, the controller sends the same signal to the P valve of electromagnetic throttle valve 11-5 and the Q valve of electromagnetic throttle valve 11-6, achieving synchronous extension of the straightening cylinders 9-1 of the upper straightening device and 10-1 of the lower straightening device. This drives the lifting devices in the upper and lower straightening devices to lift synchronously. At this time, the magnetic displacement sensors inside the straightening cylinders 9-1 and 10-1 detect the cylinder extension displacement and feed the signal back to the controller 11-9. The controller converts the cylinder extension displacement into a lifting height. When the lifting height set by the controller 11-9 is reached, the two electromagnetic directional valves are de-energized, aligning the center of the drill rod with the center of the clamp. The lifting height set by the straightening device is determined based on the specifications of the drill rods used during drilling operations.
[0051] When changing the drill pipe specification, if the diameter of the replaced drill pipe is smaller, the controller 11-9 controls the simultaneous energization of solenoid directional valve M1 of solenoid directional valve 10-3 and solenoid directional valve N1 of solenoid directional valve 10-4, causing the upper aligning device's aligning cylinder 9-1 and the lower aligning device's aligning cylinder 10-1 to continue extending until the specified lifting height is reached. If the diameter of the replaced drill pipe is larger, the controller 11-9 controls the simultaneous energization of solenoid directional valve M2 of solenoid directional valve 10-3 and solenoid directional valve N2 of solenoid directional valve 10-4, causing the upper aligning device's aligning cylinder 9-1 and the lower aligning device's aligning cylinder 10-1 to retract simultaneously until the set lifting height is reached.
[0052] It should be noted that when electromagnets MI and N1 are energized, oil enters the cylinder through port b and exits through port a, causing the cylinder to extend; when electromagnets M2 and N2 are energized, oil enters the cylinder through port a and exits through port b, causing the cylinder to retract.
[0053] It should be known that the center height of the drill pipe and the center height of the power head are the same and remain unchanged. When the diameter of the drill pipe being replaced decreases, the bottom position of the small-diameter drill pipe is higher than the bottom position of the large-diameter drill pipe, so the straightening device needs to continue to rise, and the straightening cylinder will continue to extend.
[0054] Casing construction conditions: During horizontal or sloping construction, the drill rod needs to be straightened due to flexible deformation. Since the drill rod and casing have different diameters, the upper straightening device 9 and the lower straightening device 10 are controlled separately to achieve different straightening heights. (See also...) Figure 7As shown in the right figure, during casing construction, drill rod 115 and casing 119 are connected to the internal and external threads of the power head and drill simultaneously. (The length of the first drill rod plus drill bit is slightly longer than that of the casing. To improve the accuracy of the positioning of the drill rod and casing, upper and lower stabilizers can be used for stabilization.) When uncoupling, the drill rod must be removed first, followed by the casing. To prevent the casing from slipping to the bottom of the hole during the removal of the drill rod, a lower fixing clamp is required. Under this condition, the controller 11-9 controls the M1 of the electromagnetic reversing valve 11-3 and the N1 of the magnetic reversing valve 11-4 to be energized respectively. According to the diameter of the drill rod and casing, the controller 11-9 sends different signals to the P of the electromagnetic throttle valve 11-5 and the Q of the electromagnetic throttle valve 11-6 respectively, controlling the stabilization cylinder 9-1 of the upper stabilization device and the stabilization cylinder 10-1 of the lower stabilization device to reach the specified lifting height at the same time. At this time, the magnetic displacement sensors inside the upper straightening device's straightening cylinder 9-1 and the lower straightening device's straightening cylinder 10-1 detect the cylinder extension displacement and feed the signal back to the controller 11-9. The controller converts the cylinder extension displacement into a lifting height. When the two straightening devices reach the lifting height set by the controller 11-9, it controls the two solenoid directional valves to be de-energized. The lifting height set for the upper straightening device is based on the specifications of the drill rod used during drilling operations; the lifting height set for the lower straightening device is based on the specifications of the pipe used during drilling operations.
[0055] When changing the specifications of drill pipe and casing, adjust the alignment height of the upper alignment device 9 and the lower alignment device 10 according to the diameter.
[0056] The structure described above in this invention also achieves a modular design for the clamp, as detailed below: When casing installation is performed, a three-clamp configuration is used. The lower fixed clamp 1 holds the casing, the upper fixed clamp 3 holds the next drill pipe, and the clamping cylinder of the uncoupling clamp 6 holds the previous drill pipe. The uncoupling cylinder 7 pushes the uncoupling clamp 6 to rotate, thus disassembling the drill pipe. The extension and retraction of the pulling cylinder 8 allows the uncoupling clamp mounting base 5 to slide up and down. When drill bit burial occurs, the uncoupling clamp 6 clamps the drill pipe, and the pulling cylinder 8 extends, thus providing an auxiliary pulling function. Figure 8 As shown.
[0057] When drill pipe installation is required, the upper fixed clamp 3 and upper fixed clamp seat 4 are removed, resulting in a two-clamp configuration. The lower fixed clamp 1 is used to clamp the next drill pipe, while the clamping cylinder of the uncoupling clamp 6 holds the previous drill pipe. The uncoupling cylinder 7 drives the uncoupling clamp 6 to rotate, thus disassembling the drill pipe. Figure 8 As shown.
[0058] It should be noted that this invention can also be applied to various piling machinery such as down-the-hole drilling rigs, core drilling rigs, and horizontal directional drilling rigs.
[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A combination device of centralizing device and modular clamp, characterized in that, include: Lower fixed clamp, upper fixed clamp, upper fixed clamp seat, shackle clamp base, shackle clamp, shackle cylinder, lifting cylinder, upper straightening device, lower straightening device and straightening device hydraulic control system; The lower fixed clamp is mounted on the bottom platform of the drill mast via an adjusting block; the upper fixed clamp is mounted on the upper fixed clamp seat, and the upper fixed clamp seat is mounted on the drill mast guide rail; The uncoupling clamp is mounted inside the uncoupling clamp base via a uncoupling cylinder; the uncoupling clamp base is mounted on the drill mast guide rail; the uncoupling cylinder provides power for the rotation of the uncoupling clamp, causing the uncoupling clamp to rotate relative to the uncoupling clamp base. The lifting cylinder is connected to the uncoupling pliers base and is used to provide power for the uncoupling pliers base to slide on the drill mast guide rail and to adjust the position of the uncoupling pliers. The upper straightening device is mounted on the shackle clamp base, the lower straightening device is mounted on the bottom platform of the drill mast, and the lower fixed clamp, upper fixed clamp and shackle clamp are located between the upper straightening device and the lower straightening device; the straightening cylinder of the upper straightening device and the straightening cylinder of the lower straightening device integrate magnetic displacement sensors to detect the extension displacement of the cylinder. The hydraulic control system of the straightening device is used to control the lifting height of the upper and lower straightening devices; The hydraulic control system of the straightening device includes: a hydraulic pump, a solenoid directional valve, a solenoid throttle valve, and a controller; The hydraulic pump is connected to hydraulic oil; the outlet of the hydraulic pump is divided into two paths, each connected to a solenoid directional valve. One electromagnetic reversing valve has port c connected to port a of the upper straightening device's straightening cylinder, and port d of the electromagnetic reversing valve is connected to port b of the upper straightening device's straightening cylinder. The c port of the other electromagnetic reversing valve is connected to the a port of the straightening cylinder of the lower straightening device, and the d port of the electromagnetic reversing valve is connected to the b port of the straightening cylinder of the lower straightening device. An electromagnetic throttle valve is installed between the d port of each of the two electromagnetic directional valves and the b port of their respective connected centralizing cylinders. Both the electromagnetic reversing valve and the electromagnetic throttle valve are connected to the controller. The controller is used to control the energization and de-energization of the electromagnetic reversing valve, the extension and retraction of the centralizing cylinder, and the opening of the electromagnetic throttle valve; and to pre-set the corresponding lifting height according to different drill pipe specifications; and to pre-set the corresponding lifting height according to the specifications of the pipes used in the drilling rig during construction. During casing construction, when the drill pipe and casing need to be aligned, the controller sends electrical signals to two solenoid directional valves to energize them. Based on the diameters of the drill pipe and casing, it sends different opening signals to two solenoid throttle valves, controlling the simultaneous extension of the alignment cylinders of the upper and lower alignment devices. The extension speed is determined by the opening of the two solenoid throttle valves. The alignment cylinders drive the lifting devices in the upper and lower alignment devices to lift the casing, ensuring that the time to reach the designated lifting height is the same. The controller acquires the cylinder extension displacement detected by the magnetic displacement sensor and converts it into a lifting height. When the set lifting height is reached, the controller de-energizes the two solenoid directional valves.
2. The straightening device and modular clamp assembly according to claim 1, characterized in that, The device also includes an adjustment block, and the lower fixing clamp is mounted on the bottom platform of the drill mast via the adjustment block; The upper fixing clamp is mounted on the upper fixing clamp seat by bolts; The upper fixed clamp seat is mounted on the drill mast guide rail by bolts; The adjusting block, the upper fixed clamp seat, and the shackle clamp base are used to adjust the center height of the lower fixed clamp, the upper fixed clamp, and the shackle clamp, respectively, so that the center height of the clamp is consistent with the center height of the power head.
3. The straightening device and modular clamp assembly according to claim 1, characterized in that, The shackle clamp base includes: a shackle seat, a nylon slider, a pressure plate, and a pull lug; There are two nylon sliders, one on the left and one on the right, which are respectively installed on the guide rails on both sides of the drill mast and can slide up and down along the guide rails of the drill mast. There are two lugs, one on the left and one on the right, located below the guide rails on both sides of the drill mast; The shackle seat is located above the guide rails on both sides of the drill mast. The left and right pull lugs and the left and right nylon sliders are fixed to the left and right sides of the shackle seat by bolts; The shackle seat is provided with a circular guide rail that matches the shape of the shackle clamp, and the shackle clamp is provided with a groove that mates with the circular guide rail. The shackle clamp is placed on the circular guide rail of the shackle seat, and the pressure plate is used to press the shackle clamp and restrict the shackle clamp from rotating around the clamp center. The pressure plate is fixed to the shackle seat by bolts.
4. The straightening device and modular clamp assembly according to claim 3, characterized in that, The lever of the shackle cylinder is hinged to the shackle clamp, and the cylinder barrel of the shackle cylinder is hinged to the base of the shackle clamp.
5. The straightening device and modular clamp assembly according to claim 3, characterized in that, The cylinder barrel of the lifting cylinder is hinged to the bottom hinge lug of the drill mast, and the cylinder rod of the lifting cylinder is hinged to the pull lug of the shackle clamp base. The lifting cylinder corresponds to the pull lug, with one on each side.
6. The straightening device and modular clamp assembly according to claim 3, characterized in that, The shackle seat is provided with an upper straightening device support seat, and the upper straightening device is installed on the upper straightening device support seat.
7. The straightening device and modular clamp assembly according to claim 6, characterized in that, The upper straightening device includes: a straightening cylinder, a lifting device, and a pin; The cylinder of the straightening cylinder is hinged to the support seat of the upper straightening device by a pin, and the cylinder rod of the straightening cylinder is hinged to the lifting device by a pin. The extension and retraction of the straightening cylinder drives the lifting device to rise and fall. The lifting device is hinged to the bottom support of the drill mast via a pin. The lower straightening device has the same structure as the upper straightening device.
8. The straightening device and modular clamp assembly according to claim 7, characterized in that, The lifting device includes: a lifting frame, rollers, and a pin. The rollers are connected to the lifting frame via pins, and the lifting frame is used to support the drill rod.
9. The straightening device and modular clamp assembly according to claim 1, characterized in that, The hydraulic control system of the straightening device also includes a safety valve; The safety valve is located on the main oil line at the outlet of the hydraulic pump.
10. The straightening device and modular clamp assembly according to claim 1, characterized in that, The controller is specifically used for, When the drill pipe needs to be straightened during construction, the same electrical signal is sent to two solenoid directional valves and the same opening signal is sent to two solenoid throttle valves at the same time. This controls the straightening cylinders of the upper straightening device and the lower straightening device to extend synchronously at the same speed, thereby driving the lifting devices in the upper and lower straightening devices to lift synchronously. The displacement of the cylinder extension detected by the magnetic displacement sensor is obtained and converted into a lifting height. When the set lifting height is reached, the two electromagnetic reversing valves are de-energized.
11. The straightening device and modular clamp assembly according to claim 1, characterized in that, The controller is specifically used for, When changing drill pipe specifications, if the diameter of the new drill pipe is smaller than the previous one, the same electrical signal is sent to the electromagnets in the left position of the two solenoid directional valves, and the same opening signal is sent to the two solenoid throttle valves to control the straightening cylinders of the upper and lower straightening devices to continue extending; the cylinder extension displacement detected by the magnetic displacement sensor is obtained and converted into lifting height until the set lifting height is reached, and then the two solenoid directional valves are de-energized. If the diameter of the replaced drill pipe is larger than that of the previous drill pipe, the same electrical signal is sent to the electromagnets in the right position of the two solenoid directional valves, and the same opening signal is sent to the two solenoid throttle valves, controlling the directional cylinders of the upper and lower directional devices to retract simultaneously; the cylinder extension displacement detected by the magnetic displacement sensor is obtained and converted into lifting height until the set lifting height is reached, and the two solenoid directional valves are de-energized.
12. The straightening device and modular clamp assembly according to claim 1, characterized in that, Under casing construction conditions, the combined device adopts a three-clamp mode. In the three-clamp mode, the lower fixed clamp is used to clamp the casing, the upper fixed clamp is used to clamp the next drill pipe, and the clamping cylinder of the uncoupling clamp is used to clamp the previous drill pipe. The uncoupling cylinder pushes the uncoupling clamp to rotate and disassemble the drill pipe.
13. The straightening device and modular clamp assembly according to claim 12, characterized in that, When a drill string becomes stuck, the drill rod is clamped by the uncoupling pliers, the pull-out cylinder extends, and the uncoupling pliers base slides on the drill mast guide rail to assist in the pull-out process.
14. The straightening device and modular clamp assembly according to claim 1, characterized in that, Under drill pipe operating conditions, the combined device adopts a two-clamp configuration. In the two-clamp mode, the upper fixed clamp and the upper fixed clamp seat are removed, the lower fixed clamp is used to clamp the next drill rod, the clamping cylinder of the uncoupling clamp is used to clamp the previous drill rod, and the uncoupling cylinder is used to push the uncoupling clamp to rotate, thereby disassembling the drill rod.