Hydraulic caliper with handle function and drilling rig

Abstract

This application discloses a hydraulic caliper and drilling rig with a support bar function. The hydraulic caliper includes: a support frame; a boom hinged to the support frame via a first drive device; the boom having a guide groove and a guide hole, the guide groove and the guide hole being concentric; a shackle arm slidably passing through the guide hole and connected to the boom via a second drive device; the shackle arm having a shackle groove, with a first toothed plate and a second toothed plate respectively installed on the opposite side walls of the shackle groove; a clamping arm rotatably mounted on the shackle arm and connected to the shackle arm via a third drive device; the clamping arm having a third toothed plate; a straightening fork slidably mounted in the guide groove and connected to the boom via a fourth drive device; the straightening fork having a limiting groove, the fourth drive device driving the straightening fork to slide along the guide groove, forcing the drill rod located in the limiting groove to contact the first toothed plate and the second toothed plate. The hydraulic caliper of this application can actively straighten and precisely center the drill rod before connecting it, and reduce wear on the toothed plates and the drill rod.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a hydraulic caliper and drilling rig with a lever function. Background Technology

[0002] During operation, drill rods are typically connected and disconnected using the rotation of the rotary power head. However, due to prolonged exposure to vibration and impact, the tightening torque at the threaded joints of the drill rod may exceed the initial setting, resulting in a required unwinding torque far exceeding the maximum unwinding torque that the rotary power head can apply. In this situation, simply reversing the rotation of the rotary power head cannot loosen the drill rod; specialized lifting pliers or wrenches must be used to manually loosen the threads before unloading. This process not only easily damages the drill rod threads but also involves high manual labor intensity and requires machine downtime, severely impacting operational efficiency.

[0003] To address the aforementioned technical problems, patent application number 202411338729X discloses a clamping and uncoupling caliper and drilling rig, which can be used for drill pipe uncoupling. However, the main function of this type of caliper is only to provide uncoupling torque, lacking the ability to actively straighten and precisely align the drill pipe before connection. Furthermore, the clamping method of this type of caliper requires applying a large clamping force to the drill pipe to complete the uncoupling, which can easily lead to wear on the jaw plate and the drill pipe body, and may even cause deformation of the drill pipe. Summary of the Invention

[0004] To address the aforementioned technical problems, this application proposes a hydraulic caliper with a support rod function, which can actively straighten and precisely center the drill pipe before connection. At the same time, it optimizes the clamping method, reducing the probability of wear on the jaw plate and drill pipe, and even drill pipe deformation.

[0005] This application also proposes a drilling rig having the aforementioned hydraulic caliper.

[0006] According to an embodiment of the first aspect of this application, a hydraulic caliper with a lever function includes:

[0007] support; The main arm is hinged to the bracket and connected to the bracket via a first driving device; the main arm is provided with a guide groove and a guide hole, the guide groove and the guide hole being concentric. The shackle arm slides through the guide hole and is connected to the main arm through a second drive device. The second drive device drives the shackle arm to slide along the guide hole. The shackle arm is provided with a shackle groove, and a first toothed plate and a second toothed plate are respectively installed on the opposite side walls of the shackle groove. A clamping arm is rotatably mounted on the shackle arm and connected to the shackle arm via a third drive device; the clamping arm is equipped with a third toothed plate; the clamping arm has a first position and a second position, and the third drive device drives the clamping arm to switch between the first position and the second position; when the clamping arm is in the second position, the third toothed plate clamps the first toothed plate and the second toothed plate at even intervals around the circumference of the drill pipe; The straightening fork is slidably mounted in the guide groove and connected to the boom via a fourth drive device; the straightening fork is provided with a limiting groove, and the fourth drive device drives the straightening fork to slide along the guide groove, forcing the drill rod located in the limiting groove to be in contact with the first tooth plate and the second tooth plate.

[0008] The hydraulic caliper with a handlebar function according to the embodiments of this application has at least the following beneficial effects: By sliding the straightening fork along the guide groove, the drill rod located in the limiting groove is forced to contact the first tooth plate and the second tooth plate, realizing active straightening and precise alignment of the drill rod before disconnection, ensuring that the drill rod can be stably and accurately clamped in the uncoupling groove. When the hydraulic caliper of this embodiment clamps and uncouples the drill rod, the first tooth plate, the second tooth plate, and the third tooth plate clamp the outer circumference of the drill rod at even intervals around the circumference, resulting in a large contact area with the drill rod and a more stable clamping method. This allows for the use of lower clamping force to clamp and uncouple the drill rod, thereby reducing wear on the tooth plates and the drill rod and lowering the probability of drill rod deformation.

[0009] In some embodiments of this application, the straightening fork has an initial position and a locked position, and the fourth driving device drives the straightening fork to switch between the initial position and the locked position; When the centering fork is in the initial position, the opening direction of the limiting groove is the same as the opening direction of the shackle groove. When the centering fork is in the locking position, the opening of the limiting groove faces the side wall of the shackle groove.

[0010] In some embodiments of this application, the limiting groove includes opposing first groove walls and second groove walls, the second groove wall being provided with barbs protruding from its surface; The first groove wall is located at the end of the straightening fork closer to the fourth drive device, and the second groove wall is located at the end of the straightening fork away from the fourth drive device.

[0011] In some embodiments of this application, the barb is disposed at the end of the second groove wall.

[0012] In some embodiments of this application, the boom is equipped with a guide member, and the guide groove is disposed on the guide member; The guide component is detachably connected to the boom, and stop plates are installed at both ends of the guide groove.

[0013] In some embodiments of this application, the upper arm is provided with a positioning groove, the guide hole is disposed at the bottom of the positioning groove, and the guide member is installed in the positioning groove.

[0014] In some embodiments of this application, the shackle groove and / or the limiting groove is configured as an arc-shaped groove, the depth of the limiting groove is greater than the depth of the shackle groove, and the limiting groove extends out of the upper arm.

[0015] In some embodiments of this application, the shackle arm is provided with a first sliding pin, which passes through the guide hole; The straightening fork is provided with a second sliding pin, which is slidably installed in the guide groove.

[0016] In some embodiments of this application, the boom includes two opposing first clamping plates, and the shackle arm and the second drive device are mounted between the two first clamping plates; The shackle arm includes two opposing second clamping plates, and the clamping arm and the third drive device are installed between the two second clamping plates; The first driving device and the fourth driving device are respectively located on opposite sides of the two first clamping plates.

[0017] The drilling rig according to the second aspect of this application includes the aforementioned hydraulic caliper. Since the drilling rig includes the aforementioned hydraulic caliper, it also possesses at least all the beneficial effects of a hydraulic caliper.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the hydraulic caliper according to the first aspect of this application; Figure 2 This is a schematic diagram of the assembly of the hydraulic caliper according to the first aspect of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 A schematic diagram of the structure when the clamping arm is in the first position; Figure 5 for Figure 2 A schematic diagram of the structure when the clamping arm is in the second position; Figure 6 for Figure 2 Assembly diagram of the middle unscrew arm and the main boom; Figure 7 for Figure 1 A schematic diagram of the structure of the centering fork in its initial position and a schematic diagram of the movement path of the centering fork; Figure 8 for Figure 1 A schematic diagram of the structure when the centering fork is in the locked position.

[0020] Icon labels: Support 100, first drive device 110; The components include: a large arm 200, a second drive device 210, a positioning groove 220, a guide hole 221, a guide member 230, a guide groove 231, a stop plate 240, a fourth drive device 250, and a first clamping plate 260. Shackle arm 300, third drive device 310, base plate 320, first sliding pin 321, shackle groove 330, first toothed plate 331, second toothed plate 332, second clamping plate 340; Clamping arm 400, third toothed plate 410; The components include a centering fork 500, a limiting groove 510, a first groove wall 511, a second groove wall 512, a barb 513, and a second sliding pin 520. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0024] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The embodiments of this application may omit unnecessary detailed descriptions. For example, detailed descriptions of well-known matters and repeated descriptions of actually identical structures may be omitted. This is to avoid making the following description unnecessarily lengthy and to facilitate understanding by those skilled in the art.

[0026] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0027] Reference Figures 1 to 8 As shown, the first aspect of this application discloses a hydraulic caliper with a handle function. The hydraulic caliper includes several core components, specifically: a support structure 100, a boom 200 assembly, a shackle arm 300 mechanism, a clamping arm 400 device, and a straightening fork 500 component. The support 100 serves as the supporting foundation for the entire device. The boom 200 is connected to the support 100 via a hinge and is connected to the support 100 by a first driving device 110. The first driving device 110 can drive the boom 200 to rotate around its hinge point with the support 100. The boom 200 is designed with a guide groove 231 and a guide hole 221, wherein the guide groove 231 has an arc-shaped structure, and the guide hole 221 has an arc-shaped hole structure, and the two are concentrically arranged.

[0028] The shackle arm 300 is slidably inserted into the guide hole 221 and connected to the main arm 200 through the second drive device 210. The second drive device 210 can drive the shackle arm 300 to slide along the guide hole 221. The shackle arm 300 is provided with a shackle groove 330, and a first toothed plate 331 and a second toothed plate 332 are respectively installed on the opposite side walls of the shackle groove 330.

[0029] The clamping arm 400 is rotatably mounted on the shackle arm 300 and connected to the shackle arm 300 via a third drive device 310. The clamping arm 400 is equipped with a third toothed plate 410 and has two working positions: a first position and a second position. The third drive device 310 can drive the clamping arm 400 to switch between the first and second positions. When the clamping arm 400 is in the first position... Figure 4 In the first position shown, the drill pipe is only located in the shackle slot 330 but is not yet clamped; when the clamping arm 400 switches to... Figure 5 In the second position shown, the third toothed plate 410 works together with the first toothed plate 331 and the second toothed plate 332 to clamp the drill rod in the shackle groove 330. The first toothed plate 331, the second toothed plate 332 and the third toothed plate 410 are evenly spaced along the circumferential direction to clamp the outer circumferential surface of the drill rod, and the clamping angle between adjacent toothed plates is maintained at 120 degrees.

[0030] It should be noted that during the drill pipe uncoupling operation, the third drive device 310 first drives the clamping arm 400 to clamp and fix the drill pipe. Then, the second drive device 210 drives the uncoupling arm 300 to move, causing the third drive device 310 and the clamping arm 400 to slide synchronously. Then, with the help of the first toothed plate 331, the second toothed plate 332 and the third toothed plate 410, the drill pipe is axially rotated, thereby realizing the drill pipe uncoupling process.

[0031] The straightening fork 500 is slidably installed in the guide groove 231 and is hinged to the boom 200 through the fourth drive device 250. The straightening fork 500 is provided with a limiting groove 510. The fourth drive device 250 can drive the straightening fork 500 to slide along the guide groove 231, thereby forcing the drill rod located in the limiting groove 510 to be in close contact with the first tooth plate 331 and the second tooth plate 332.

[0032] The hydraulic caliper with a lever function in this embodiment can effectively push the drill rod located in the limiting groove 510 to fit against the first jaw plate 331 and the second jaw plate 332 through the sliding movement of the straightening fork 500 along the guide groove 231. This achieves active straightening and precise centering of the drill rod before it is disconnected, ensuring that the drill rod can be stably and accurately clamped inside the release groove 330. At the same time, when the hydraulic caliper of this embodiment performs drill rod clamping and release operations, the first jaw plate 331, the second jaw plate 332 and the third jaw plate 410 are evenly spaced along the circumference and clamped to the outer circumference of the drill rod, increasing the contact area with the drill rod and making the clamping method more stable and reliable. This allows for the use of lower clamping force to complete the clamping and release operations of the drill rod, helping to reduce wear on the jaw plates and the drill rod, and significantly reducing the possibility of drill rod deformation.

[0033] In some embodiments of this application, such as Figure 2 and Figure 3 As shown, a positioning groove 220 is provided on the boom 200, and guide holes 221 are arranged at the bottom of the positioning groove 220. There are two guide holes 221, which are spaced apart along the circumferential direction. Figure 6 As shown, a base plate 320 is installed on the shackle arm 300. Two first sliding pins 321 are installed on the base plate 320 corresponding to the guide hole 221. The two first sliding pins 321 are respectively inserted into the two guide holes 221. The two first sliding pins 321 serve as backup structures for each other, further improving the stability and safety of the equipment operation.

[0034] In some embodiments of this application, reference is made to Figure 3 As shown, a guide member 230 is installed on the boom 200, a guide groove 231 is provided on the guide member 230, the guide member 230 is installed in the positioning groove 220, and the guide member 230 and the boom 200 are detachably connected; a second sliding pin 520 is provided on the straightening fork 500, and the second sliding pin 520 is slidably installed inside the guide groove 231.

[0035] Reference Figure 6 As shown, both ends of the guide groove 231 are equipped with stop plates 240 to prevent the second sliding pin 520 from accidentally dislodging from the guide groove 231, thereby enhancing the stability and reliability of the straightening fork 500's operation; the stop plates 240 preferably adopt a detachable connection method with the boom 200 for easy maintenance and replacement.

[0036] In some embodiments of this application, the middle part of the clamping arm 400 is connected to the shackle arm 300 by a pin, the first end of the clamping arm 400 in the length direction is hinged to the third drive device 310, and the third toothed plate 410 is disposed at the second end of the clamping arm 400 in the length direction; the second end of the clamping arm 400 in the length direction is designed with a slot structure, and the third toothed plate 410 is installed on the slot wall position.

[0037] In some embodiments of this application, the centering fork 500 has the following features: Figure 7 The initial position shown, and as... Figure 8 The locked position is shown in the diagram. These two positions correspond to different functional states of the centering fork 500, and are switched by the fourth drive device 250. Specifically, the fourth drive device 250 can precisely control the movement trajectory of the centering fork 500, allowing it to smoothly and reliably switch between the initial position and the locked position, thereby meeting different operational requirements. Figure 7 As shown, when the centering fork 500 is in its initial position, the opening direction of its limiting groove 510 is completely consistent with the opening direction of the shackle groove 330, at which point the system is in a ready or released state; while as Figure 8As shown, when the straightening fork 500 is switched to the locked position under the drive of the fourth drive device 250, the opening direction of the limiting groove 510 turns towards the side wall of the shackle groove 330, so that the drill rod in the limiting groove 510 enters the locked or fixed state.

[0038] Reference Figure 7 As shown in the diagram, when the first drive unit 110 starts operating and drives the boom 200 to rotate around its hinge point with the support 100, the limiting groove 510 connected to the boom 200 will rotate synchronously. During this process, even if the drill rod is not perfectly aligned due to its initial position or other factors, as long as its entirety or part of its structure is within the movement path of the limiting groove 510, the centering fork 500 can effectively guide the drill rod through its rotational motion, gradually adjusting and accurately guiding it into the internal space of the shackle groove 330. This mechanism significantly improves the equipment's ability to accurately guide and position the drill rod, ensuring the reliability and efficiency of the operation.

[0039] In some embodiments of this application, the limiting groove 510 is structurally designed to include a first groove wall 511 and a second groove wall 512 arranged opposite to each other. These two groove walls are located on both sides of the limiting groove 510, forming a stable clamping space. Specifically, a barb 513 structure protruding into the groove is provided on the second groove wall 512. This structure extends from the surface of the groove wall to form a blocking surface at a certain angle. The first groove wall 511 is located at the end of the straightening fork 500 near the fourth drive device 250, for initial guidance and limiting, while the second groove wall 512 is located at the other end of the straightening fork 500 away from the fourth drive device 250, such as... Figure 7 and Figure 8 As shown, the barb 513 structure is located at the end of the second groove wall 512. The design of the barb 513 can effectively increase the limiting ability of the limiting groove 510 to limit the drill rod, significantly reduce the possibility of the drill rod accidentally dislodging from the limiting groove 510 during operation, thereby further improving the accuracy and reliability of straightening and positioning the drill rod, which is conducive to ensuring the stability and safety of the overall operation.

[0040] In some specific embodiments provided in this application, the shackle groove 330 and / or the limiting groove 510 are designed as arc-shaped groove structures with a specific curvature. The overall depth of the limiting groove 510 is significantly greater than the depth of the shackle groove 330, and one end of the limiting groove 510 extends beyond the outer contour of the boom 200. This structural feature facilitates smoother and more precise entry of the drill rod into the limiting groove 510, improving operational convenience and equipment efficiency.

[0041] In some specific embodiments of this application, the main structure of the boom 200 adopts a basic frame composed of two first clamping plates 260. These two clamping plates are parallel to each other and arranged opposite each other, forming a stable support system. The shackle arm 300 and the second drive device 210 are precisely and firmly installed in the reserved space between the two first clamping plates 260. This layout not only provides sufficient and reliable installation support for the core components of the equipment, but also forms a certain degree of barrier in terms of physical structure, which can effectively avoid interference or mechanical damage that may be caused by the external environment, thereby improving the service life of the components. At the same time, the shackle arm 300 itself is also designed to include two oppositely arranged second clamping plates 340. The clamping arm 400 and the third drive device 310 are integrated and installed in the area between the second clamping plates 340. This design further enhances the structural integrity and connection strength of the internal functional units and improves their resistance to external vibration and impact. In addition, the first drive device 110 and the fourth drive device 250 are respectively arranged on the outer side of the two first clamping plates 260, that is, on their two opposite outer surfaces. Through the above multi-layered layout, the structure of the entire hydraulic caliper system appears more compact and scientific, enabling more diversified functional integration under limited or even harsh space constraints. This significantly reduces the equipment's overall installation space requirements and also helps improve the rigidity and operational stability of the entire mechanical system.

[0042] The second aspect of this application also discloses a drilling rig that includes the hydraulic caliper described in detail in the above embodiments. Since this drilling rig directly adopts the aforementioned hydraulic caliper structure, it naturally possesses all the beneficial effects of a hydraulic caliper, such as higher positioning accuracy, stronger structural stability, and optimized space utilization efficiency. The specific details of these advantages have been fully explained above and will not be repeated here.

[0043] Throughout this specification, references to "implementation method," "partial implementation method," "one implementation method," "another method," "specific method," or "partial method" mean that at least one implementation method or embodiment in this application includes the specific features, structures, materials, or characteristics described in that implementation method or embodiment.

[0044] In this application, numerical ranges are involved. Unless otherwise specified, the numerical ranges mentioned above are considered continuous and include the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Any lower limit can be combined with any upper limit to form an unspecified range; and any lower limit can be combined with other lower limits to form an unspecified range, just as any upper limit can be combined with any other upper limit to form an unspecified range. Furthermore, each individually disclosed point or single value can itself serve as a lower or upper limit and be combined with any other point or single value or with other lower or upper limits to form an unspecified range.

[0045] Although illustrative embodiments have been demonstrated and described, those skilled in the art should understand that the above embodiments should not be construed as limiting the present application, and that changes, substitutions and modifications can be made to the embodiments without departing from the spirit, principles and scope of the present application.

Claims

1. A hydraulic caliper with a handrail function, characterized in that, include: support; The main arm is hinged to the bracket and connected to the bracket via a first driving device; the main arm is provided with a guide groove and a guide hole, the guide groove and the guide hole being concentric. The shackle arm slides through the guide hole and is connected to the main arm through a second drive device. The second drive device drives the shackle arm to slide along the guide hole. The shackle arm is provided with a shackle groove, and a first toothed plate and a second toothed plate are respectively installed on the opposite side walls of the shackle groove. A clamping arm is rotatably mounted on the shackle arm and connected to the shackle arm via a third drive device; the clamping arm is equipped with a third toothed plate; the clamping arm has a first position and a second position, and the third drive device drives the clamping arm to switch between the first position and the second position; when the clamping arm is in the second position, the third toothed plate clamps the first toothed plate and the second toothed plate at even intervals around the circumference of the drill pipe; The straightening fork is slidably mounted in the guide groove and connected to the boom via a fourth drive device; the straightening fork is provided with a limiting groove, and the fourth drive device drives the straightening fork to slide along the guide groove, forcing the drill rod located in the limiting groove to be in contact with the first tooth plate and the second tooth plate.

2. The hydraulic clamping caliper with a handle function according to claim 1, characterized in that, The straightening fork has an initial position and a locked position, and the fourth driving device drives the straightening fork to switch between the initial position and the locked position; When the centering fork is in the initial position, the opening direction of the limiting groove is the same as the opening direction of the shackle groove. When the centering fork is in the locking position, the opening of the limiting groove faces the side wall of the shackle groove.

3. The hydraulic clamping caliper with handle function according to claim 1, characterized in that The limiting groove includes a first groove wall and a second groove wall opposite to each other, and the second groove wall is provided with barbs protruding from its surface; The first groove wall is located at the end of the straightening fork closer to the fourth drive device, and the second groove wall is located at the end of the straightening fork away from the fourth drive device.

4. The hydraulic caliper with handle function according to claim 3, characterized in that, The barb is located at the end of the second groove wall.

5. The hydraulic clamping caliper with handle function according to claim 1, characterized in that The boom is equipped with a guide component, and the guide groove is disposed on the guide component; The guide component is detachably connected to the boom, and stop plates are installed at both ends of the guide groove.

6. The hydraulic clamping caliper with handle function according to claim 5, characterized in that The boom is provided with a positioning groove, the guide hole is provided at the bottom of the positioning groove, and the guide member is installed in the positioning groove.

7. The hydraulic clamping caliper with handle function according to claim 1, characterized in that The shackle groove and / or the limiting groove are configured as arc-shaped grooves, the depth of the limiting groove is greater than the depth of the shackle groove, and the limiting groove extends out of the upper arm.

8. The hydraulic clamping caliper with handle function according to claim 1, characterized in that The shackle arm is provided with a first sliding pin, which passes through the guide hole; The straightening fork is provided with a second sliding pin, which is slidably installed in the guide groove.

9. The hydraulic clamping caliper with handle function according to claim 1, characterized in that The boom includes two opposing first clamping plates, and the shackle arm and the second drive device are installed between the two first clamping plates; The shackle arm includes two opposing second clamping plates, and the clamping arm and the third drive device are installed between the two second clamping plates; The first driving device and the fourth driving device are respectively located on opposite sides of the two first clamping plates.

10. A rig characterized by, The hydraulic caliper with a lever function as described in any one of claims 1 to 9.

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