Electric iron roughneck

Abstract

The invention relates to the technical field of iron roughneck devices, and discloses an electric iron roughneck which comprises an executing mechanism and a power mechanism, the power mechanism comprises a motor pump set, a control valve set and a pressurization oil tank, the motor pump set is connected with the control valve set, and the control valve set is connected with the executing mechanism to control the executing mechanism to move. The motor pump set, the control valve set and the executing mechanism form a closed oil way, and the pressurizing oil tank is used for supplementing oil to the closed oil way. According to the electric iron roughneck, the power mechanism is integrated on the electric iron roughneck, the executing mechanism can be driven to execute different actions without an external oil source, the arrangement process of the electric iron roughneck is simplified, operation is easy, and then the operation efficiency of the electric iron roughneck is improved.

Description

Technical Field

[0001] This invention relates to the field of iron drill equipment technology, specifically to an electric iron drill. Background Technology

[0002] A drill bit is a specialized piece of equipment used in oil and gas drilling operations to engage and disengage drill pipes and drill tools.

[0003] In the existing technology, iron drills generally use a pure hydraulic drive system. This system requires an external hydraulic oil source. The hydraulic pump delivers pressurized oil to the actuator cylinder or hydraulic motor through the control valve group to drive the clamping mechanism to complete the tightening or loosening of the drill rod and drill bit.

[0004] However, the external oil source is independently located outside the main body of the iron drill, which makes the equipment layout more complicated and the operation inconvenient. Summary of the Invention

[0005] This invention provides an electric iron drill to solve the problem that the existing technology requires an external oil source to be set up outside the iron drill, which leads to a complicated layout and inconvenient operation.

[0006] This invention provides an electric iron drill, comprising: an actuator; and a power mechanism, the power mechanism including a motor pump group, a control valve group, and a booster oil tank. The motor pump group is connected to the control valve group, and the control valve group is connected to the actuator to control the movement of the actuator. The motor pump group, the control valve group, and the actuator form a closed oil circuit, and the booster oil tank is used to replenish oil to the closed oil circuit.

[0007] Based on the aforementioned technical means, the actuator is used to perform actions such as fastening, unfastening, and clamping. The power mechanism provides power to the actuator, highly integrating the motor-pump unit, control valve group, and pressurized oil tank. The motor-pump unit converts electrical energy into hydraulic energy, and the control valve group precisely regulates the hydraulic fluid to direct the actuator to perform different actions. The hydraulic oil continuously circulates in a closed loop of "motor-pump unit - control valve group - actuator - motor-pump unit". However, during the circulation process, internal leakage inevitably occurs in the precision clearances within the actuator, control valve group, and motor-pump unit, and minor external leakage may also occur at joints and seals. Therefore, even though the hydraulic oil is in a closed loop, there may still be losses, leading to insufficient pressure within the closed loop. Therefore, a pressurized oil tank is required. The pressurized oil tank does not participate in the circulation within the closed loop; it is only used to replenish the hydraulic oil in the closed loop to ensure the integrity of the closed loop's volume and the stability of its pressure, thereby ensuring that the power mechanism can stably drive the actuator.

[0008] Therefore, this application integrates the motor pump set, control valve set, and booster oil tank into the power mechanism of the electric iron drill. The power mechanism drives the actuator to perform different actions, eliminating the need for an external oil source for the electric iron drill. This simplifies the layout process of the electric iron drill, makes operation more convenient, and improves the environmental adaptability of the electric iron drill.

[0009] In one optional embodiment, the power mechanism is a plurality of such mechanisms; the plurality of power mechanisms include a first power mechanism, and the actuator includes a snap-fit ​​cylinder, a boom telescopic cylinder, a chain motor, a chain adjustment motor, and a yaw motor; the first power mechanism is configured to drive at least one of the snap-fit ​​cylinder, the boom telescopic cylinder, the chain motor, the chain adjustment motor, and the yaw motor to move.

[0010] Thus, by controlling the aforementioned multiple actuators through the first power mechanism, which serves as the sole power source, the structural compactness of the electric iron drill is improved, reducing its manufacturing cost, space occupation, and structural complexity. Simultaneously, by coordinating the actions of the snap-fit ​​cylinder, boom extension cylinder, chain motor, chain adjustment motor, and yaw motor through the first power mechanism, the operation of the iron drill—including its transfer, alignment, and snap-fitting—is ensured. Furthermore, the output power can be adjusted in real-time according to the specific actuators being controlled, improving energy utilization efficiency and reducing the energy consumption of the electric iron drill.

[0011] In one alternative embodiment, the plurality of power mechanisms further includes a second power mechanism, and the actuator further includes a left reset cylinder, a right reset cylinder, and a translation cylinder; the second power mechanism is configured to drive at least one of the left reset cylinder, the right reset cylinder, and the translation cylinder to move.

[0012] In this way, by centralizing the left reset cylinder, right reset cylinder, and translation cylinder through a second power mechanism, the second power mechanism drives the translation cylinder to quickly position the tongs during the transfer and centering operation. Then, precise fine-tuning is performed by the left and right reset cylinders. This facilitates the centralized coordination and synchronous control of multiple actuators, ensuring the precise timing and positional coordination of translation, centering, and reset actions. This simplifies the structure and hydraulic circuit layout of the electric iron drill while improving its operational accuracy and rhythm, thereby increasing the operational efficiency of the electric iron drill.

[0013] In one alternative embodiment, the plurality of power mechanisms further include a third power mechanism, and the actuator further includes a lifting cylinder, a snap-clamping shift motor, a left-hand snap-clamping cylinder, and a right-hand snap-clamping cylinder; the third power mechanism is configured to drive at least one of the lifting cylinder, the snap-clamping shift motor, the left-hand snap-clamping cylinder, and the right-hand snap-clamping cylinder to move.

[0014] In this way, by controlling one or more of the actions of the lifting cylinder, the snap clamping shifting motor, the left-hand clamping cylinder, and the right-hand clamping cylinder through the third power mechanism, the actuators that need to perform each action can be precisely controlled according to the preset timing and logic as required by the work process. This is conducive to further improving the accuracy and efficiency of the electric iron drill operation, simplifying the structure, and making the operation of the electric iron drill operator more convenient.

[0015] In one alternative embodiment, the plurality of power mechanisms further includes a fourth power mechanism, and the actuator further includes a right-hand snap clamping cylinder; the fourth power mechanism is configured to drive the right-hand snap clamping cylinder to move.

[0016] Thus, since the right punch clamping cylinder is located on the side of the electric iron drill and is far from other actuators, controlling it through the same power mechanism would result in an excessively large overall size of the power mechanism and difficulty in laying out the hydraulic circuit. The fourth power mechanism controls the right punch clamping cylinder, which not only optimizes the structural layout of the electric iron drill but also helps prevent mutual interference between the right punch clamping cylinder and the left punch clamping cylinder, thereby improving the reliability of the electric iron drill operation.

[0017] In one alternative embodiment, the plurality of power mechanisms further includes a fifth power mechanism, and the actuator further includes a left punch clamping cylinder; the fifth power mechanism is configured to drive the left punch clamping cylinder to move.

[0018] Thus, the fifth power mechanism controls the left punch clamping cylinder, which not only optimizes the structural layout of the electric iron drill, but also helps to prevent mutual interference between the right punch clamping cylinder and the left punch clamping cylinder, thereby improving the reliability of the electric iron drill operation.

[0019] In one optional embodiment, the first power mechanism includes a first booster oil tank, a first control valve group, two first replenishing valve groups, two first motor pump groups, and two first flow matching valve groups; the first motor pump groups are connected to the first flow matching valve groups, and the two first flow matching valve groups are each connected to the buckle cylinder, the boom telescopic cylinder, the chain motor, the chain adjusting motor, and the yaw motor through the first control valve group; the first booster oil tank is connected to the chain motor, the chain adjusting motor, the yaw motor, and the two first motor pump groups respectively through the first replenishing valve groups.

[0020] In this way, the two first motor pump sets are set in parallel, and the start and stop of the first motor pump sets can be flexibly adjusted according to the output power required by the first power mechanism. It can control the simultaneous operation of the punch cylinder, boom telescopic cylinder, chain motor, chain adjustment motor and yaw motor, and can also reduce the output power when one or several actions require less energy, thereby reducing energy consumption. This helps to ensure the reliability of the electric iron drill while saving its operating costs.

[0021] In one optional embodiment, the second power mechanism includes a second booster oil tank, a second control valve group, two second replenishing valve groups, two second motor pump groups, and two second flow matching valve groups; the second motor pump groups are connected to the second flow matching valve groups, one of the two second flow matching valve groups is connected to the left reset cylinder through the second control valve group, and the other of the two second flow matching valve groups is connected to the right reset cylinder and the translation cylinder through the second control valve group; the second booster oil tank is connected to the second motor pump group through the second replenishing valve group, and the second booster oil tank is connected to the second control valve group.

[0022] In this way, the left and right reset cylinders are controlled separately by two second motor pump sets. This avoids mutual interference caused by flow and pressure fluctuations between the left and right reset cylinders during precision alignment, thereby improving the accuracy and response speed of the second power mechanism control and thus enhancing the precision of the electric iron drill operation. Furthermore, with two second motor pump sets, only one second motor pump set needs to be activated when the left reset cylinder is not running or only the left reset cylinder is running. This allows for flexible adjustment of the output power of the second power mechanism, thereby reducing the energy consumption of the electric iron drill.

[0023] In one optional embodiment, the third power mechanism includes a third booster oil tank, a third motor pump group, a third control valve group, a third flow matching valve group, and two third replenishing valve groups; the third motor pump group is connected to the flow matching valve group, the punch clamping shift motor, the left-hand clamping cylinder, and the right-hand clamping cylinder through the control valve group; the flow matching valve group is connected to the lifting cylinder; the third booster oil tank is connected to the third motor pump group and the punch clamping shift motor through the two third replenishing valve groups respectively.

[0024] Thus, the third flow matching valve assembly is used to precisely control and distribute the flow to the lifting cylinder, ensuring smooth and controllable lifting action. Two third oil replenishment valve assemblies lead a low-pressure oil replenishment line from the third booster oil tank to provide pressure oil replenishment to the main pump suction port and the buckle clamping shift motor circuit, respectively. This dual protection helps to further reduce the risk of cavitation and adapt to the air suction problem that is easily generated by the left-hand and right-hand clamping cylinders under rapid reversal and impact loads, thereby improving the reliability and service life of the electric iron drill under high-frequency and heavy-load conditions.

[0025] In one optional embodiment, both the fourth power mechanism and the fifth power mechanism include a fourth booster oil tank, a fourth motor pump group, a fourth flow matching valve group, and a fourth replenishing valve group; the fourth booster oil tank is connected to the fourth motor pump group through the fourth replenishing valve group, and the fourth motor pump group is connected to the left punch clamping cylinder or the right punch clamping cylinder through the fourth flow matching valve group.

[0026] In one optional embodiment, a manual quick-connect valve block is further included; the manual quick-connect valve block is connected to both the first power mechanism and the third power mechanism; the manual quick-connect valve block is configured to cut off the oil circuits of the first power mechanism and the third power mechanism in the event of power failure.

[0027] In this way, in the event of a power failure, the operator can manually pull out the hydraulic oil from the cylinder by inserting the quick-release valve block, thereby loosening the pliers and allowing the electric iron drill to be moved. At the same time, this avoids the generation of vacuum and cavitation. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a structural schematic diagram of an electric iron drill provided in an embodiment of this application;

[0030] Figure 2 for Figure 1 Another structural diagram of the electric iron drill in China; Figure 3 A schematic diagram of the first power mechanism of the electric iron drill provided in an embodiment of this application; Figure 4 A schematic diagram of the second power mechanism of the electric iron drill provided in an embodiment of this application; Figure 5A schematic diagram of the third power mechanism of the electric iron drill provided in an embodiment of this application; Figure 6 A schematic diagram of the fourth power mechanism of the electric iron drill provided in an embodiment of this application; Figure 7 This is a hydraulic structure diagram of the first power mechanism according to an embodiment of this application; Figure 8 This is a hydraulic structure diagram of the second power mechanism according to an embodiment of this application; Figure 9 This is a hydraulic structure diagram of the third power mechanism according to an embodiment of this application; Figure 10 This is a hydraulic structure diagram of the fourth power mechanism according to an embodiment of this application; Figure 11 This is a hydraulic structure diagram of the first power mechanism and the third power mechanism and the manual quick-release valve block according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures: 100-Electrified Iron Drill Operator; 110 - First power mechanism; 111 - First booster oil tank; 112 - First control valve group; 113 - First replenishing oil valve group; 114 - First motor pump group; 115 - First flow matching valve group; 120 - Second power unit; 121 - Second booster oil tank; 122 - Second control valve group; 123 - Second replenishing oil valve group; 124 - Second motor pump group; 125 - Second flow matching valve group; 130 - Third power unit; 131 - Third booster oil tank; 132 - Third motor pump unit; 133 - Third control valve unit; 134 - Third flow matching valve unit; 135 - Third replenishing valve unit; 140 - Fourth power unit; 141 - Fourth booster oil tank; 142 - Fourth motor pump unit; 143 - Fourth flow matching valve unit; 144 - Fourth replenishing valve unit; 150 - Actuator; 151 - Punch-lock cylinder; 152 - Boom telescopic cylinder; 153 - Chain motor; 154 - Chain adjustment motor; 155 - Swing motor; 156 - Left reset cylinder; 157 - Right reset cylinder; 158 - Translation cylinder; 159 - Lifting cylinder; 1510 - Punch-lock clamping position shifting motor; 1511 - Left rotary clamping cylinder; 1512 - Right rotary clamping cylinder; 1513 - Right punch-lock clamping cylinder; 160 - Fifth power mechanism; 170 - Manual quick-connect valve block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] As the background section illustrates, in related technologies, iron drills generally employ a pure hydraulic drive system. This system requires an external hydraulic oil source, which uses a hydraulic pump to deliver pressurized oil through a control valve assembly to the actuator cylinder or hydraulic motor to drive the clamping mechanism to tighten or loosen the drill rod and drill bit. However, the external oil source is independently located outside the iron drill body, resulting in a cumbersome equipment layout and inconvenient operation.

[0034] Furthermore, after long-term operation, hydraulic systems may experience issues such as aging seals and loose joints, leading to hydraulic oil leaks and pollution of the well site environment. This necessitates frequent maintenance, resulting in high maintenance costs for drilling rig operators. Additionally, the physical properties of hydraulic oil are significantly affected by temperature. At low temperatures, increased oil viscosity leads to greater flow resistance, making system startup difficult and response slow. At high temperatures, the oil is prone to oxidation and deterioration, resulting in decreased lubrication performance. Therefore, external hydraulic oil sources have poor environmental adaptability.

[0035] To address the aforementioned technical problems, this application provides an electric iron drill 100, including an actuator 150 and a power mechanism. The power mechanism includes a motor-pump assembly, a control valve assembly, and a pressurized oil tank. The actuator 150 is used to perform actions such as locking, unlocking, and clamping. The power mechanism provides power to the actuator 150. The power mechanism highly integrates the motor-pump assembly, control valve assembly, and pressurized oil tank. The motor-pump assembly converts electrical energy into hydraulic energy, and the control valve assembly precisely regulates the hydraulic fluid to direct the actuator 150 to perform different actions. The hydraulic oil continuously circulates in a closed loop of "motor-pump assembly - control valve assembly - actuator 150 - motor-pump assembly". However, during the circulation process, internal leakage inevitably occurs in the precision gaps within the actuator, control valve assembly, and motor-pump assembly, and minor external leakage may also occur at joints and seals. Therefore, even though the hydraulic oil is in a closed loop, there may still be losses, leading to insufficient pressure within the closed loop. Therefore, a booster oil tank is required. The booster oil tank does not participate in the circulation in the closed loop, but is only used to replenish hydraulic oil in the closed loop to ensure the integrity of the closed loop volume and the stability of the pressure, thereby ensuring that the power mechanism can stably drive the actuator 150 to operate.

[0036] Therefore, this application integrates the motor pump group, control valve group and booster oil tank into the power mechanism of the electric iron drill 100. The power mechanism drives the actuator 150 to perform different actions. There is no need to set up an oil source outside the electric iron drill 100, which helps to simplify the layout process of the electric iron drill 100, makes the operation more convenient, and improves the environmental adaptability of the electric iron drill 100.

[0037] The following is combined with Figures 1 to 11 The following describes embodiments of the present invention.

[0038] According to an embodiment of the present invention, see Figure 1 and Figure 2 An electric iron drill 100 is provided, including an actuator 150 and a power mechanism. The power mechanism includes a motor pump set, a control valve set, and a booster oil tank. The motor pump set is connected to the control valve set, and the control valve set is connected to the actuator 150 to control the movement of the actuator 150. The motor pump set, the control valve set, and the actuator 150 form a closed oil circuit. The booster oil tank is used to replenish oil to the closed oil circuit.

[0039] In this embodiment, the actuator 150 is used to perform actions such as fastening, unfastening, and clamping. The power mechanism provides power to the actuator 150. The power mechanism highly integrates the motor-pump assembly, control valve assembly, and pressurized oil tank. The motor-pump assembly converts electrical energy into hydraulic energy, and the control valve assembly precisely regulates the hydraulic fluid to direct the actuator 150 to perform different actions. The hydraulic oil continuously circulates in a closed loop of "motor-pump assembly - control valve assembly - actuator 150 - motor-pump assembly". During the circulation process, internal leakage inevitably occurs in the precision gaps within the actuator, control valve assembly, and motor-pump assembly, and minor external leakage may also occur at joints and seals. Therefore, even though the hydraulic oil is in a closed loop, there may still be losses, resulting in insufficient pressure within the closed loop. Therefore, a pressurized oil tank is required. The pressurized oil tank does not participate in the circulation of the closed loop; it is only used to replenish the hydraulic oil in the closed loop to ensure the integrity of the closed loop's volume and the stability of its pressure. This helps ensure that the power mechanism can stably drive the actuator 150 and improves the accuracy of the actuator 150.

[0040] Furthermore, since the booster tank and motor pump unit are integrated into the body of the electric iron drill 100, the influence of the external environment on the power mechanism can be reduced. The hydraulic oil is isolated from the external environment within the closed oil circuit, reducing the risk of hydraulic oil oxidation, deterioration, or contamination. It also reduces the impact of external temperature on the hydraulic oil's state, which helps ensure hydraulic oil quality and thus improves the electric iron drill 100's tolerance and reliability in harsh industrial environments such as dust, humidity, and high temperatures. Simultaneously, it reduces hydraulic oil leakage and emissions, minimizing pollution to the electric iron drill 100's workplace and surrounding environment, thus protecting the environment and saving on maintenance costs.

[0041] Furthermore, as a pressurized, independent clean oil source, the booster tank's positive pressure effectively prevents external air and contaminants from being drawn into the main circuit due to negative pressure when replenishing oil to the closed circuit, thus cutting off the main channel for environmental contaminants to enter. This helps ensure the purity and stability of the hydraulic oil inside the closed circuit, fundamentally enhancing the system's ability to resist external interference.

[0042] Furthermore, the highly integrated power mechanism forms an efficient closed oil circuit, which also helps to reduce energy loss, thereby reducing the overall energy consumption of the electrified iron drill 100.

[0043] Therefore, this application integrates the motor pump group, control valve group, and booster oil tank into the power mechanism of the electric iron drill 100. The power mechanism drives the actuator 150 to perform different actions, eliminating the need for an external oil source for the electric iron drill 100. This simplifies the layout of the electric iron drill 100, makes operation more convenient, improves the environmental adaptability of the electric iron drill 100, reduces its energy consumption, and also helps reduce pollution to the working environment and surrounding area, saving on maintenance costs.

[0044] In one embodiment, see Figure 1 and Figure 3 As shown, there are multiple power mechanisms; the multiple power mechanisms include a first power mechanism 110, and the actuator 150 includes a snap-fit ​​cylinder 151, a boom telescopic cylinder 152, a chain motor 153, a chain adjustment motor 154, and a yaw motor 155; the first power mechanism 110 is configured to drive at least one of the snap-fit ​​cylinder 151, the boom telescopic cylinder 152, the chain motor 153, the chain adjustment motor 154, and the yaw motor 155 to move.

[0045] Specifically, the snap-lock cylinder 151 is used to perform the action of tightening or loosening the threaded connection, the boom telescopic cylinder 152 is used to control the longitudinal extension and retraction of the entire mechanical arm of the electric iron drill 100, which determines the working range of the electric iron drill 100, the chain motor 153 is the power source that drives the entire electric iron drill 100 to move up and down along the derrick track, and the chain adjustment motor 154 and the yaw motor 155 are used for fine adjustment and auxiliary positioning to improve the stability of the electric iron drill 100's movement.

[0046] The first power mechanism 110 controls the aforementioned multiple actuators. As the sole power source, the first power mechanism 110 improves the structural compactness of the electric iron drill 100, reducing its manufacturing cost, space requirements, and structural complexity. Simultaneously, by coordinating the actions of the snap-fit ​​cylinder 151, boom telescopic cylinder 152, chain motor 153, chain adjusting motor 154, and yaw motor 155, the first power mechanism 110 ensures the smooth movement, alignment, and snap-fitting of the iron drill. Furthermore, it allows for real-time adjustment of the output power based on the specific actuators being controlled, improving energy efficiency and reducing the energy consumption of the electric iron drill 100.

[0047] In one embodiment, see Figure 1 , Figure 3 and Figure 7 As shown, the first power mechanism 110 includes a first booster oil tank 111, a first control valve group 112, two first replenishing valve groups 113, two first motor pump groups 114, and two first flow matching valve groups 115. The first motor pump groups 114 are connected to the first flow matching valve groups 115. The two first flow matching valve groups 115 are connected to the buckle cylinder 151, the boom telescopic cylinder 152, the chain motor 153, the chain adjusting motor 154, and the yaw motor 155 through the first control valve group 112. The first booster oil tank 111 is connected to the chain motor 153, the chain adjusting motor 154, the yaw motor 155, and the two first motor pump groups 114 through the first replenishing valve groups 113.

[0048] In practical implementation, the first power mechanism 110 needs to be equipped with two first motor pump groups 114. Each motor pump group can control the action of the buckle cylinder 151, boom telescopic cylinder 152, chain motor 153, chain adjusting motor 154, and yaw motor 155. The two first motor pump groups 114 are set in parallel, and the start and stop of the first motor pump groups 114 can be flexibly adjusted according to the output power required by the first power mechanism 110. For example, when only one actuator is in action, only one first motor pump group 114 can be turned on to reduce energy waste and reduce energy consumption. When the buckle cylinder 151, boom telescopic cylinder 152, chain motor 153, chain adjusting motor 154, and yaw motor 155 need to be in action simultaneously, both first motor pump groups 114 can be turned on to ensure that the first power mechanism 110 can provide sufficient power. Among them, the two first motor pump sets 114 can be bidirectional motor pump sets with a power of 17kW. This application embodiment does not limit this and can be reasonably set according to the actual needs of the electrified iron drill 100.

[0049] Therefore, the first power mechanism 110 of this application embodiment can control the simultaneous operation of the punching cylinder 151, the boom telescopic cylinder 152, the chain motor 153, the chain adjusting motor 154 and the yaw motor 155, and can also reduce the output power and reduce energy consumption when one or more of the actions require less energy. This is beneficial to ensuring the reliability of the operation of the electric iron drill 100 while saving its operating costs.

[0050] In one embodiment, see Figure 1 and Figure 4 As shown, the plurality of power mechanisms also include a second power mechanism 120, and the actuator 150 also includes a left reset cylinder 156, a right reset cylinder 157, and a translation cylinder 158; the second power mechanism 120 is configured to drive at least one of the left reset cylinder 156, the right reset cylinder 157, and the translation cylinder 158 to move.

[0051] It should be noted that the electric iron drill 100 includes a pliers head or a back pliers. The translation cylinder 158 is used to realize a large range of horizontal movement of the pliers head. The left reset cylinder 156 and the right reset cylinder 157 are a pair of working cylinders to drive the clamping mechanism on the pliers head to make small displacements, thereby achieving precise centering and reset.

[0052] In this embodiment, a second power mechanism 120 centralizes the left reset cylinder 156, the right reset cylinder 157, and the translation cylinder 158. During the transfer and centering operation, the second power mechanism 120 drives the translation cylinder 158 to quickly position the pliers head. Precise fine-tuning is then performed by the left reset cylinder 156 and the right reset cylinder 157. This facilitates centralized coordination and synchronous control of multiple actuators, ensuring precise timing and positional coordination of translation, centering, and reset actions. This simplifies the structure and hydraulic circuit layout of the electric iron drill 100 while improving its operational accuracy and rhythm, thereby increasing the operational efficiency of the electric iron drill 100.

[0053] In one embodiment, see Figure 1 , Figure 4 and Figure 8 As shown, the second power mechanism 120 includes a second booster oil tank 121, a second control valve group 122, two second replenishing valve groups 123, two second motor pump groups 124, and two second flow matching valve groups 125. The second motor pump group 124 is connected to the second flow matching valve group 125. One of the two second flow matching valve groups 125 is connected to the left reset cylinder 156 through the second control valve group 122, and the other of the two second flow matching valve groups 125 is connected to the right reset cylinder 157 and the translation cylinder 158 through the second control valve group. The second booster oil tank 121 is connected to the second motor pump group 124 through the second replenishing valve group 123, and the second booster oil tank 121 is connected to the two control valve groups.

[0054] It is understandable that, in order to meet the power requirements for the simultaneous activation of the left reset cylinder 156, the right reset cylinder 157, and the translation cylinder 158, the second power mechanism 120 needs to be equipped with two second motor pump sets 124. The power requirements of the left reset cylinder 156, the right reset cylinder 157, and the translation cylinder 158 are relatively low. For example, the second motor pump set 124 can be a bidirectional motor pump set with a power of 2.7kW. This application embodiment does not limit this.

[0055] The left reset cylinder 156 and right reset cylinder 157 are controlled separately by two second motor pump sets 124. This avoids mutual interference caused by flow and pressure fluctuations between the two cylinders during precision alignment, thereby improving the accuracy and response speed of the second power mechanism 120 and ultimately enhancing the precision of the electric iron drill 100. Furthermore, with two second motor pump sets 124, only one second motor pump set 124 needs to be activated when the left reset cylinder 156 is not running or only the left reset cylinder 156 is running. This allows for flexible adjustment of the output power of the second power mechanism 120, reducing the energy consumption of the electric iron drill 100.

[0056] In one embodiment, see Figure 1 and Figure 5 As shown, the plurality of power mechanisms also include a third power mechanism 130, and the actuator 150 includes a lifting cylinder 159, a snap clamping shift motor 1510, a left-hand snap clamping cylinder 1511, and a right-hand snap clamping cylinder 1512; the third power mechanism 130 is configured to drive at least one of the lifting cylinder 159, the snap clamping shift motor 1510, the left-hand snap clamping cylinder 1511, and the right-hand snap clamping cylinder 1512 to move.

[0057] In this embodiment, the lifting cylinder 159 is used to control the vertical height of the entire working head or back clamp device of the electric iron drill 100, the punch clamping shifting motor 1510 is used to drive the rotating clamping mechanism of the clamp head to shift or index, and the left-hand clamping cylinder 1511 and the right-hand clamping cylinder 1512 are located inside the clamp head and are used to drive the left and right jaws or slips to realize the turning and clamping action.

[0058] In practice, the third power mechanism 130 controls one or more of the actions of the lifting cylinder 159, the punch clamping and shifting motor 1510, the left-hand clamping cylinder 1511, and the right-hand clamping cylinder 1512. According to the needs of the work process, each actuator that needs to perform an action is precisely controlled according to the preset timing and logic. This helps to further improve the accuracy and efficiency of the electric iron drill 100, simplify the structure, and make the operation of the electric iron drill 100 more convenient.

[0059] In one embodiment, see Figure 1 , Figure 5 and Figure 9 As shown, the third power mechanism 130 includes a third booster oil tank 131, a third motor pump group 132, a third control valve group 133, a third flow matching valve group 134, and two third replenishing valve groups 135. The third motor pump group 132 is connected to the flow matching valve group, the punch clamp shifting motor 1510, the left-hand clamping cylinder 1511, and the right-hand clamping cylinder 1512 through the control valve group. The flow matching valve group is connected to the lifting cylinder 159. The third booster oil tank 131 is connected to the third motor pump group 132 and the punch clamp shifting motor 1510 through the two third replenishing valve groups 135, respectively.

[0060] In practical implementation, the left-hand clamping cylinder 1511 and the right-hand clamping cylinder 1512 need to generate a huge clamping force in a short time to grip the drill rod and prevent slippage. Therefore, the left-hand clamping cylinder 1511 and the right-hand clamping cylinder 1512 require a large instantaneous power, while the punch clamping shifting motor 1510 and the lifting cylinder 159 are relatively small. Therefore, the power of the third motor pump group 132 can be set according to the needs of the left-hand clamping cylinder 1511 and the right-hand clamping cylinder 1512. For example, the third motor pump group 132 is a bidirectional motor pump group with a power of 15kW. This application embodiment does not limit this.

[0061] In addition, the third flow matching valve group 134 is used to precisely control and distribute the flow to the lifting cylinder 159, ensuring smooth and controllable lifting action. Two third oil replenishment valve groups 135 lead a low-pressure oil replenishment line from the third booster oil tank 131 to provide pressure oil replenishment to the main pump suction port and the circuit of the snap clamping shift motor 1510, respectively. This dual protection helps to further reduce the risk of cavitation and adapt to the cavitation problem that is easily generated by the left-hand snap clamping cylinder 1511 and the right-hand snap clamping cylinder 1512 under rapid reversal and impact load, thereby improving the reliability and service life of the electric iron drill 100 under high-frequency and heavy-load conditions.

[0062] In one embodiment, see Figure 1 , Figure 2 , Figure 7 , Figure 9 and Figure 11 As shown, it also includes a manual quick-connect valve block 170; the manual quick-connect valve block 170 is connected to both the first power mechanism 110 and the third power mechanism 130; the manual quick-connect valve block 170 is configured to cut off the oil circuits of the first power mechanism 110 and the third power mechanism 130 in the event of power failure.

[0063] It is understandable that the punching cylinder 151 controlled by the first power mechanism 110 and the left-hand clamping cylinder 1511 and right-hand clamping cylinder 1512 controlled by the third power mechanism 130 are all involved in clamping drill rods and other related actions. When the electric iron drill 100 experiences a sudden power failure during operation, if the pliers are still clamped on the drill rod, the electric iron drill 100 cannot be moved. Therefore, a manual quick-release valve block 170 can be set up. In the absence of power, the operator can use the manual quick-release valve block 170 to draw out the hydraulic oil in the cylinder, so that the pliers can be released to move the electric iron drill 100. At the same time, it can avoid the generation of vacuum and cavitation.

[0064] In one embodiment, see Figure 1 , Figure 2 and Figure 6As shown, the multiple power mechanisms also include a fourth power mechanism 140 and a fifth power mechanism 160, and the actuator 150 also includes a right punch clamping cylinder 1513 and a left punch clamping cylinder; the fourth power mechanism 140 is configured to drive the right punch clamping cylinder 1513 to move; the fifth power mechanism 160 is configured to drive the left punch clamping cylinder to move.

[0065] In practical implementation, the right-flip clamping cylinder 1513 and the left-flip clamping cylinder drive the transmission mechanism inside the tong head through differential telescopic movement, thereby providing rotational torque and counter-torque. This torque acts directly on the joint of the drill rod or casing, realizing the thread tightening or loosening action. Since the right-flip clamping cylinder 1513 and the left-flip clamping cylinder are located on both sides of the electric iron drill rig and are far away from other actuators, controlling them through the same power mechanism would result in an excessively large overall size of the power mechanism and difficulty in laying out the hydraulic circuit. Therefore, a fourth power mechanism 140 and a fifth power mechanism 160 can be set up. The fourth power mechanism 140 and the fifth power mechanism 160 control the right-flip clamping cylinder 1513 and the left-flip clamping cylinder respectively. This optimizes the structural layout of the electric iron drill rig 100 and helps prevent mutual interference between the right-flip clamping cylinder 1513 and the left-flip clamping cylinder, improving the reliability of the electric iron drill rig 100 operation.

[0066] In one embodiment, see Figure 1 , Figure 2 , Figure 6 and Figure 10 As shown, both the fourth power mechanism 140 and the fifth power mechanism 160 include a fourth booster oil tank 141, a fourth motor pump group 142, a fourth flow matching valve group 143, and a fourth replenishing oil valve group 144; the fourth booster oil tank 141 is connected to the fourth motor pump group 142 through the fourth replenishing oil valve group 144, and the fourth motor pump group 142 is connected to the left punch clamping cylinder or the right punch clamping cylinder 1513 through the fourth flow matching valve group 143.

[0067] It is understood that the fourth power mechanism 140 and the fifth power mechanism 160 work on the same principle. Taking the fourth power mechanism 140 as an example, the fourth motor pump group 142 can be a bidirectional motor pump group with a power of 6kW to meet the power requirements of the right punch clamping cylinder 1513. This application embodiment does not limit this. In addition, the flow rate and pressure of the hydraulic oil output can be controlled by the fourth flow matching valve group 143, thereby flexibly adjusting the clamping force to meet the different operating requirements of the right punch clamping cylinder 1513, which is conducive to improving the flexibility and reliability of the electric iron drill 100.

[0068] In summary, this application provides an electric iron drill 100, including an actuator 150 and multiple power mechanisms. The motor pump group and control valve group in the power actuator 150 form a closed oil circuit with the actuator elements in the actuator 150. Hydraulic oil is dynamically replenished to the closed oil circuit through a booster tank to ensure pressure stability, thereby controlling the actuator 150 to perform different actions. Specifically, the multiple power mechanisms include a first power mechanism 110, a second power mechanism 120, a third power mechanism 130, a fourth power mechanism 140, and a fifth power mechanism 160. The actuator 150 includes multiple actuator elements, which are connected to different power mechanisms according to their positions and required power. The first power mechanism 110 controls a snap-fit ​​cylinder 151, a boom telescopic cylinder 152, a chain motor 153, a chain adjusting motor 154, and a yaw motor 155. The second power mechanism 120 controls a left reset cylinder 156, a right reset cylinder 157, and a translation cylinder 158. The third power mechanism 130 controls a lifting cylinder 156. 9. The punch clamping and shifting motor 1510, the left-hand clamping cylinder 1511, and the right-hand clamping cylinder 1512 are controlled by the fourth power mechanism 140, the right punch clamping cylinder 1513 is controlled by the fourth power mechanism 140, and the left punch clamping cylinder is controlled by the fifth power mechanism 160. All power mechanisms are set on the electric iron drill 100. Therefore, flexible operation control of the fourteen actuators in the actuator 150 can be achieved without an external oil source. This is conducive to simplifying the layout process of the electric iron drill 100, making operation simple, thereby improving the operating efficiency of the electric iron drill 100. At the same time, it can also reduce the impact of the environment on the operation of the electric iron drill 100, improve its adaptability, and reduce maintenance costs.

[0069] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An electric iron drill, characterized in that, include: Executive agency (150); The power mechanism includes a motor pump group, a control valve group and a booster oil tank. The motor pump group is connected to the control valve group, and the control valve group is connected to the actuator (150) to control the movement of the actuator (150). The motor pump group, the control valve group and the actuator (150) form a closed oil circuit. The booster oil tank is used to replenish oil to the closed oil circuit.

2. The electric iron drill according to claim 1, characterized in that, The power mechanism comprises multiple components; The plurality of power mechanisms include a first power mechanism (110), and the actuator (150) includes a snap-fit ​​cylinder (151), a boom telescopic cylinder (152), a chain motor (153), a chain adjustment motor (154), and a yaw motor (155). The first power mechanism (110) is configured to drive at least one of the snap-fit ​​cylinder (151), the boom telescopic cylinder (152), the chain motor (153), the chain adjustment motor (154), and the yaw motor (155) to move.

3. The electric iron drill according to claim 2, characterized in that, The plurality of power mechanisms also include a second power mechanism (120), and the actuator (150) also includes a left reset cylinder (156), a right reset cylinder (157), and a translation cylinder (158). The second power mechanism (120) is configured to drive at least one of the left reset cylinder (156), the right reset cylinder (157) and the translation cylinder (158) to move.

4. The electric iron drill according to claim 2, characterized in that, The plurality of power mechanisms also include a third power mechanism (130), and the actuator (150) also includes a lifting cylinder (159), a snap clamping shift motor (1510), a left-hand snap clamping cylinder (1511), and a right-hand snap clamping cylinder (1512). The third power mechanism (130) is configured to drive at least one of the lifting cylinder (159), the snap clamping shifting motor (1510), the left-hand snap clamping cylinder (1511), and the right-hand snap clamping cylinder (1512) to move.

5. The electric iron drill according to claim 2, characterized in that, The plurality of power mechanisms also include a fourth power mechanism (140), and the actuator (150) also includes a right-hand clamping cylinder (1513). The fourth power mechanism (140) is configured to drive the right punch clamping cylinder (1513) to move.

6. The electric iron drill according to claim 5, characterized in that, The plurality of power mechanisms also include a fifth power mechanism (160), and the actuator (150) also includes a left-hand clamping cylinder; The fifth power mechanism (160) is configured to drive the left punch clamping cylinder to move.

7. The electric iron drill according to claim 2, characterized in that, The first power mechanism (110) includes a first booster oil tank (111), a first control valve group (112), two first replenishment valve groups (113), two first motor pump groups (114), and two first flow matching valve groups (115). The first motor pump group (114) is connected to the first flow matching valve group (115). Both first flow matching valve groups (115) are connected to the punch cylinder (151), the boom telescopic cylinder (152), the chain motor (153), the chain adjusting motor (154) and the yaw motor (155) through the first control valve group (112). The first booster tank (111) is connected to the chain motor (153), the chain adjusting motor (154), the yaw motor (155) and the two first motor pump sets (114) respectively through the first replenishing valve group (113).

8. The electric iron drill according to claim 3, characterized in that, The second power mechanism (120) includes a second booster oil tank (121), a second control valve group (122), two second replenishment valve groups (123), two second motor pump groups (124), and two second flow matching valve groups (125). The second motor pump group (124) is connected to the second flow matching valve group (125). One of the two second flow matching valve groups (125) is connected to the left reset cylinder (156) through the second control valve group (122). The other of the two second flow matching valve groups (125) is connected to the right reset cylinder (157) and the translation cylinder (158) through the two control valve groups. The second booster oil tank (121) is connected to the second motor pump group (124) through the second replenishing oil valve group (123), and the second booster oil tank (121) is connected to the two control valve groups.

9. The electric iron drill according to claim 4, characterized in that, The third power mechanism (130) includes a third booster oil tank (131), a third motor pump group (132), a third control valve group (133), a third flow matching valve group (134), and two third replenishment valve groups (135). The third motor pump group (132) is connected to the flow matching valve group, the punch clamping shift motor (1510), the left-hand clamping cylinder (1511) and the right-hand clamping cylinder (1512) through the control valve group. The flow matching valve group is connected to the lifting cylinder (159). The third booster oil tank (131) is connected to the third motor pump group (132) and the punch clamping shift motor (1510) respectively through two third oil replenishment valve groups (135).

10. The electric iron drill according to claim 6, characterized in that, The fourth power mechanism (140) and the fifth power mechanism (160) both include a fourth booster oil tank (141), a fourth motor pump group (142), a fourth flow matching valve group (143), and a fourth replenishing oil valve group (144). The fourth booster oil tank (141) is connected to the fourth motor pump group (142) through the fourth replenishing oil valve group (144), and the fourth motor pump group (142) is connected to the left punch clamping cylinder or the right punch clamping cylinder (1513) through the fourth flow matching valve group (143).

11. The electric iron drill according to claim 4, characterized in that, It also includes a manual quick-connect valve block (170); The manual quick-connect valve block (170) is connected to both the first power mechanism (110) and the third power mechanism (130); The manual quick-connect valve block (170) is configured to cut off the oil circuits of the first power mechanism (110) and the third power mechanism (130) in the event of power failure.

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