Walking and parking automatic hydraulic clamp

Abstract

The utility model relates to oilfield workover equipment field discloses a kind of walking and giving place automatic hydraulic clamp, including walking base assembly, transport base, lifting and rotating assembly and telescopic arm support assembly;Walking base assembly includes guide rail base, walking trolley and walking hydraulic cylinder;Lifting and rotating assembly includes rotary reducer, lifting column, lifting trolley and lifting hydraulic cylinder;Telescopic arm support assembly includes arm support mounting seat, clamp head suspension frame, first group of arm support, second group of arm support and telescopic hydraulic cylinder.The utility model has walking, lifting, rotating, telescopic four-axis independent action ability simultaneously, can adapt to multi-directional mobile demand in narrow space;Through walking, rotating, telescopic three-axis synchronous collaborative action, realize the shortest path, maximum space active avoidance and giving place;Compact structure, and telescopic arm support uses single parallelogram structure, small in volume when retracting, especially suitable for compact drilling rig surface multiple equipment dense arrangement complex operation scene.

Description

Technical Field

[0001] This utility model relates to the field of oilfield well repair equipment, specifically to an automatic hydraulic clamp for walking and yielding. Background Technology

[0002] In oil well workover operations, hydraulic tongs (also known as hydraulic power tongs) are the core equipment used for attaching and detaching couplings on the tubing string. As well workover operations move towards automation and intelligence, higher demands are being placed on the functional integration, spatial adaptability, and operational flexibility of hydraulic tongs.

[0003] Currently, some technical solutions have equipped hydraulic clamps with walking or moving functions. Patent CN212927754U (A Hydraulic Clamp Walking Mechanism in a Small Repair and Well Repair Equipment) discloses a hydraulic clamp walking mechanism that realizes the lifting and swinging of the hydraulic clamp through a clamp frame support, a lifting seat, and a linkage mechanism, aiming to solve the problems of large space occupation and rigid fixing methods in existing hydraulic clamp assembly methods.

[0004] However, the aforementioned existing technologies and the hydraulic tongs widely used in current well workover operations still have the following shortcomings: Firstly, the movement dimensions are limited, lacking multi-axis coordinated maneuverability. The walking device in patent CN201851045U is limited to unidirectional movement along a fixed guide rail. While patent CN212927754U achieves lifting and swinging via a linkage mechanism, its movement trajectory is relatively fixed. Overall, existing hydraulic tongs generally only possess limited movement capabilities in one or two directions, unable to simultaneously achieve independent and flexible movement in four directions: walking, lifting, rotating, and extending. In actual operations, the hydraulic tongs need to move from the standby position to the wellhead, complete the attaching and detaching of hooks, and then return. This single-dimensional movement often requires repeated adjustments to the equipment position, resulting in low operational efficiency. The limited movement dimensions make it difficult to meet the maneuverability requirements in confined spaces, making the deployment and adjustment of hydraulic tongs extremely inconvenient on the compact and obstacle-filled oil well workover drilling platform.

[0005] Secondly, the lack of a proactive coordination and yielding mechanism results in insufficient adaptability to confined spaces. Existing technologies often employ independent walking or moving functions, with movements such as walking, extension, and rotation failing to coordinate synchronously according to operational needs. Operating space on a compact drilling platform is extremely limited. When hydraulic tongs need to make way for other equipment (such as lifting clamps, slips, and wellhead tools), existing hydraulic tongs can only rely on single-directional movement for avoidance, lacking a multi-axis coordinated yielding mechanism. This results in insufficient proactive avoidance capabilities, limited yielding paths, and confined yielding spaces. When the space around the wellhead is occupied by other equipment, the existing single-dimensional movement method offers limited yielding paths and spaces, hindering efficient avoidance and impacting the smoothness and safety of multi-equipment collaborative operations. Utility Model Content

[0006] To address the technical problems of limited motion dimensions and insufficient active avoidance capability of current hydraulic clamps, this utility model provides an automatic hydraulic clamp for walking and yielding, the technical solution of which is as follows: An automatic hydraulic clamp with a walking clearance mechanism includes an automatic clamp head assembly, an electrical control cabinet, and a hydraulic valve assembly box. It also includes a walking base assembly, a transport base, a lifting and slewing assembly, and a telescopic boom assembly. The walking base assembly includes a guide rail base, a walking trolley, and a walking hydraulic cylinder. The guide rail base is fixed to the transport base, the walking trolley is slidably mounted on the guide rail base, and the cylinder body of the walking hydraulic cylinder is hinged to the guide rail base, while the piston rod end is hinged to the walking trolley. The lifting and slewing assembly includes a slewing reducer, a lifting column, a lifting trolley, and a lifting hydraulic cylinder. The fixed end of the slewing reducer is mounted on the upper surface of the walking trolley, the lifting column is mounted on the rotating end of the slewing reducer, and vertical guide rails are provided on both sides of the lifting column. The lowering trolley is mounted on the guide rail. The cylinder body of the lifting hydraulic cylinder is mounted on the lifting trolley, and the piston rod is mounted on the bottom of the lifting column. The telescopic boom assembly includes a boom mounting base, a clamp head suspension bracket, a first boom, a second boom, and a telescopic hydraulic cylinder. The boom mounting base is symmetrically fixed on the lifting trolley. The front end of the clamp head suspension bracket is connected to the automatic clamp head assembly. The lower ends of the first boom and the second boom are symmetrically hinged to the boom mounting base, and the upper ends of the first boom and the second boom are symmetrically hinged to the clamp head suspension bracket. The upper end of the telescopic hydraulic cylinder is hinged to the second boom, and the lower end of the telescopic hydraulic cylinder is hinged to the boom mounting base. The electrical control cabinet and hydraulic valve group box are mounted on the lifting trolley via valve group brackets.

[0007] Furthermore, both the first and second boom groups consist of two parallel booms.

[0008] Furthermore, when the first and second booms are extended and retracted, the lines connecting the four hinge points of the booms on the same side form a parallelogram structure.

[0009] Furthermore, the guide rail base is provided with a linear guide rail pair extending along the walking direction, and the bottom of the traveling trolley is provided with a slider that slides in cooperation with the guide rail pair.

[0010] Furthermore, the guide rail base is provided with a straight slide groove extending along the walking direction, and the bottom of the traveling trolley is provided with rollers that cooperate with the slide groove.

[0011] Furthermore, composite bearings are installed on the inner walls of both sides of the lifting trolley. These composite bearings are embedded in the guide rails of the lifting column and roll or slide with them.

[0012] Furthermore, the bottom of the lifting column is rigidly connected to the rotary reducer by bolts.

[0013] Furthermore, the boom mounting base is symmetrically welded onto the lifting trolley.

[0014] Furthermore, the electrical control cabinet is an explosion-proof electrical control cabinet.

[0015] Furthermore, the automatic pliers assembly is a Type 12 automatic pliers assembly.

[0016] Compared with the prior art, the present invention mainly has the following beneficial technical effects: 1. This utility model has the ability to move, lift, rotate and extend independently on four axes, which can adapt to the multi-directional mobility needs in narrow spaces and solve the problem of the existing hydraulic clamp having a single movement dimension and being unable to move flexibly.

[0017] 2. The walking, rotating, and telescopic axes of this utility model can move synchronously and in coordination to achieve active avoidance and yielding with the shortest path and the largest space, solving the problem of existing equipment lacking multi-axis coordinated yielding and having a single yielding path.

[0018] 3. This utility model integrates the walking, lifting, rotating, telescopic, swivel, and clearance functions into a compact overall structure. The telescopic boom adopts a single parallelogram structure, which is small in size when retracted. It solves the problems of the separation of walking and working functions and loose structure of existing hydraulic clamps. It is especially suitable for complex working scenarios with multiple devices densely arranged on a compact drilling platform. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the guide rail base assembly and lifting column structure of this utility model; Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 2 ; Figure 5 This diagram shows the boom retraction and boom extension states of this utility model (the green lines in the diagram are the lines connecting the four hinge points when the boom is extended and retracted, forming a parallelogram). In the diagram: 1-Pliers head suspension bracket, 2-Electrical control cabinet, 3-Hydraulic valve group box, 4-Slewing reducer, 5-Traveling base assembly, 6-Transport base, 7-Automatic pliers head assembly, 8-First set of booms, 9-Telescopic hydraulic cylinder, 10-Second set of booms, 11-Boom mounting seat, 12-Lifting column, 13-Guide rail, 14-Traveling hydraulic cylinder, 15-Guide rail pair, 16-Guide rail base, 17-Lifting trolley, 18-Valve group bracket, 19-Lifting hydraulic cylinder, 20-Traveling trolley. Detailed Implementation

[0020] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings. Example 1

[0021] See Figures 1 to 5 An automatic hydraulic clamp for yielding and moving includes an automatic clamp head assembly 7, an electrical control cabinet 2, and a hydraulic valve assembly box 3. It also includes a traveling base assembly 5, a transport base 6, a lifting and slewing assembly, and a telescopic boom assembly. The traveling base assembly 5 includes a guide rail base 16, a traveling trolley 20, and a traveling hydraulic cylinder 14. The guide rail base 16 is fixed to the transport base 6, the traveling trolley 20 is slidably mounted on the guide rail base 16, and the cylinder body end of the traveling hydraulic cylinder 14 is hinged to the guide rail base 16, while the piston rod end is hinged to the traveling trolley 20. The lifting and slewing assembly includes a slewing reducer 4, a lifting column 12, a lifting trolley 17, and a lifting hydraulic cylinder 19. The fixed end of the slewing reducer 4 is mounted on the upper surface of the traveling trolley 20, the lifting column 12 is mounted on the rotating end of the slewing reducer 4, and vertical guide rails 13 are provided on both sides of the lifting column 12. The trolley 17 is slidably mounted on the guide rail 13. The cylinder end of the lifting hydraulic cylinder 19 is mounted on the lifting trolley 17, and the piston rod end is mounted on the bottom of the lifting column 12. The telescopic boom assembly includes a boom mounting base 11, a clamp head suspension bracket 1, a first set of booms 8, a second set of booms 10, and a telescopic hydraulic cylinder 9. The boom mounting base 11 is symmetrically fixed on the lifting trolley 17. The front end of the clamp head suspension bracket 1 is connected to the automatic clamp head assembly 7. The lower ends of the first set of booms 8 and the second set of booms 10 are symmetrically hinged to the boom mounting base 11, and the upper ends of the first set of booms 8 and the second set of booms 10 are symmetrically hinged to the clamp head suspension bracket 1. The upper end of the telescopic hydraulic cylinder 9 is hinged to the second set of booms 10, and the lower end of the telescopic hydraulic cylinder 9 is hinged to the boom mounting base 11. The electrical control cabinet 2 and the hydraulic valve group box 3 are mounted on the lifting trolley 17 through the valve group bracket 18. Example 2

[0022] See Figures 1 to 5 An automatic hydraulic shear for yielding and moving, based on the technical solution described in Embodiment 1, includes two parallel booms in both the first boom group 8 and the second boom group 10; when the first boom group 8 and the second boom group 10 are extended and retracted, the line connecting the four hinge points of the booms on the same side forms a parallelogram structure (see details). Figure 5 (Green lines). Example 3

[0023] See Figures 1 to 5An automatic hydraulic clamp for walking and yielding, based on the technical solution described in Embodiment 1, has a linear guide rail pair 15 extending along the walking direction on the guide rail base 16, and a slider that slides and engages with the guide rail pair 15 at the bottom of the walking trolley 20; alternatively, the guide rail base 16 may have a linear slide groove extending along the walking direction, and a roller that engages with the slide groove at the bottom of the walking trolley 20. Example 4

[0024] See Figures 1 to 5 An automatic hydraulic clamp for walking and yielding, based on the technical solution described in Embodiment 1, has composite bearings installed on the inner walls of both sides of the lifting trolley 17. The composite bearings are embedded in the guide rail 13 of the lifting column 12 and roll or slide with it. Example 5

[0025] See Figures 1 to 5 An automatic hydraulic clamp for walking and yielding, based on the technical solution described in Embodiment 1, wherein the bottom of the lifting column 12 is rigidly connected to the rotary reducer 4 by bolts; the boom mounting base 11 is symmetrically welded to the lifting trolley 17. Example 6

[0026] See Figures 1 to 5 An automatic hydraulic plier for walking and yielding, based on the technical solution described in Embodiment 1, adopts an explosion-proof electrical control cabinet to improve safety; the automatic plier head assembly is a type 12 automatic plier head assembly, where type 12 indicates that the rated low-range maximum output torque of the plier head assembly is 12 kN·m.

[0027] To enable those skilled in the art to better understand this utility model, its basic working principle and engineering process are briefly described below: The telescopic boom assembly enables the automatic jaw assembly 7 to extend and retract horizontally; the lifting and slewing assembly enables the automatic jaw assembly 7 to adjust its lifting height and rotate around a vertical axis; the traveling base assembly 5 enables the entire machine to move linearly on the drilling platform; the transport base 6, located at the bottom of the entire machine, serves as a basic support component and a carrying platform for equipment relocation and transportation; the electrical control cabinet 2 integrates the electrical control system for automated control; the hydraulic valve assembly box 3 centrally arranges hydraulic control valves to control the actions of each actuator; the automatic jaw assembly 7 is responsible for performing clamping and unclamping operations. The electrical control cabinet 2, hydraulic valve assembly box 3, and automatic jaw assembly 7 are relatively mature technologies and will not be described in detail here.

[0028] The traveling trolley 20 is driven by the traveling hydraulic cylinder 14 to reciprocate linearly along the guide rail base 16; the lifting and slewing assembly moves together with the traveling trolley 20 and can rotate around the center of the slewing reducer 4; the telescopic boom assembly is driven by the lifting and slewing assembly to lift and rotate. The telescopic boom assembly adopts a single parallelogram mechanism, the special function of which is: when the telescopic hydraulic cylinder 9 extends or retracts, it drives the boom to swing synchronously, realizing the unfolding and folding of the parallelogram boom, thereby realizing a large range of horizontal extension and retraction of the automatic clamping head assembly 7. At the same time, when the boom is fully retracted, the parallelogram structure can be compactly folded, significantly reducing the lateral size occupied by the whole machine in the standby or avoidance state, thus adapting to the space constraints of narrow drilling platforms. When the piston rod of the traveling hydraulic cylinder 14 extends, it drives the traveling trolley 20 forward; when it retracts, it pulls the traveling trolley 20 backward. The traveling trolley 20 is driven by the traveling hydraulic cylinder 14 to slide back and forth on the guide rail base 16, enabling the entire machine to move linearly on the drilling platform and allowing the equipment to quickly move between the standby position and the working position. The lifting and slewing assembly integrates lifting and slewing functions. The lifting function can adjust the vertical height of the automatic jaw assembly 7 to adapt to the working height of different specifications of pipe columns. The slewing function causes the automatic jaw assembly 7 to swing around the central axis of the slewing reducer 4 on the lifting and slewing center, realizing the adjustment of the orientation of the automatic jaw assembly 7 and the deflection when avoiding obstacles. When high-pressure hydraulic oil enters the lifting hydraulic cylinder 19, since the bottom of the lifting column 12 is fixed, the extension and retraction movement of the lifting hydraulic cylinder 19 directly drives the lifting trolley 17 to move vertically up and down relative to the lifting column 12. The composite bearing guides and resists torsion of the lifting trolley 17 throughout the entire process within the guide rail 13. The lifting column 12 plays a dual role in installation, providing fixed support and precision guidance. The guide rail 13 on its outer wall forms a moving pair with the composite bearing on the lifting trolley 17, which not only ensures the linear motion accuracy of the lifting trolley 17 in the vertical direction, but also withstands the overturning moment brought by the automatic clamping head assembly 7 and the boom.

[0029] This utility model has two working modes in actual operation: 1. Normal Operating Mode (Independent Telescopic Action): During normal wellhead coupling / uncoupling operations, after the traveling base assembly 5 travels to the preset working position, the traveling hydraulic cylinder 14 and the slewing mechanism lock. Only the telescopic boom assembly unfolds through its parallelogram structure, delivering the automatic clamping head assembly 7 to the center working position at the wellhead to complete the coupling / uncoupling operation. After the operation is completed, the telescopic boom retracts, returning the automatic clamping head assembly 7 to a safe position. When the traveling shaft and slewing shaft are fixed, the telescopic boom alone can independently complete the delivery and retraction of the automatic clamping head assembly 7. The action path is direct and the response is rapid, effectively improving the efficiency of wellhead coupling / uncoupling operations.

[0030] 2. Avoidance and Yield Mode (Three-Axis Coordinated Movement of Walking, Rotation, and Telescopic Boom): When the space around the wellhead on the drilling platform is occupied by other equipment (such as chucks, slips, derrick columns, blowout preventers, or tubing racks), and it is necessary to make room for other equipment, the operator or control system controls the walking base assembly 5, the lifting and rotating assembly, and the telescopic boom assembly to move synchronously and in coordination according to the preset avoidance position. The walking mechanism moves along the guide rail, the rotating mechanism drives the boom to deflect, and the telescopic mechanism adjusts the boom's extension range. The three mechanisms work together to enable the automatic chuck assembly 7 to quickly avoid the target position with the shortest path and the least space occupation. The walking, rotating, and telescopic movements can be synchronized as needed. Compared with the existing technology's single-direction movement method for avoidance, this utility model's coordinated avoidance has the advantages of a shorter avoidance path, a larger avoidance space, and more flexible movements, and is especially suitable for complex operating scenarios with multiple pieces of equipment densely arranged on a compact drilling platform.

Claims

1. An automatic hydraulic clamp for yielding and moving, comprising an automatic clamp head assembly, an electrical control cabinet, and a hydraulic valve assembly box, characterized in that, It also includes a traveling base assembly, a transport base, a lifting and slewing assembly, and a telescopic boom assembly. The traveling base assembly includes a guide rail base, a traveling trolley, and a traveling hydraulic cylinder. The guide rail base is fixed to the transport base, the traveling trolley is slidably mounted on the guide rail base, and the cylinder body of the traveling hydraulic cylinder is hinged to the guide rail base, while the piston rod end is hinged to the traveling trolley. The lifting and slewing assembly includes a slewing reducer, a lifting column, a lifting trolley, and a lifting hydraulic cylinder. The fixed end of the slewing reducer is mounted on the upper surface of the traveling trolley, the lifting column is mounted on the rotating end of the slewing reducer, and vertical guide rails are provided on both sides of the lifting column. The lifting trolley is slidably mounted on the guide rails. The cylinder body end is mounted on the lifting trolley, and the piston rod end is mounted on the bottom of the lifting column; the telescopic boom assembly includes a boom mounting base, a clamp head suspension bracket, a first boom group, a second boom group, and a telescopic hydraulic cylinder. The boom mounting base is symmetrically fixed on the lifting trolley. The front end of the clamp head suspension bracket is connected to the automatic clamp head assembly. The lower ends of the first boom group and the second boom group are symmetrically hinged to the boom mounting base, and the upper ends of the first boom group and the second boom group are symmetrically hinged to the clamp head suspension bracket. The upper end of the telescopic hydraulic cylinder is hinged to the second boom group, and the lower end of the telescopic hydraulic cylinder is hinged to the boom mounting base; the electrical control cabinet and hydraulic valve group box are mounted on the lifting trolley via valve group brackets.

2. The automatic hydraulic clamp for yielding and moving according to claim 1, characterized in that, Both the first and second boom groups consist of two parallel booms.

3. The automatic hydraulic clamp for walking and yielding according to claim 2, characterized in that, When the first and second booms are extended and retracted, the lines connecting the four hinge points of the booms on the same side form a parallelogram structure.

4. The automatic hydraulic clamp for walking and yielding according to claim 1, characterized in that, The guide rail base is provided with a linear guide rail pair extending along the walking direction, and the bottom of the traveling trolley is provided with a slider that slides in cooperation with the guide rail pair.

5. The automatic hydraulic clamp for yielding and moving according to claim 1, characterized in that, The guide rail base is provided with a straight slide groove extending along the walking direction, and the bottom of the traveling trolley is provided with rollers that cooperate with the slide groove.

6. The automatic hydraulic clamp for yielding and moving according to claim 1, characterized in that, Composite bearings are installed on the inner walls of both sides of the lifting trolley. These composite bearings are embedded in the guide rails of the lifting column and roll or slide with them.

7. The automatic hydraulic clamp for yielding and moving according to claim 1, characterized in that, The bottom of the lifting column is rigidly connected to the rotary reducer by bolts.

8. The automatic hydraulic clamp for yielding and moving according to claim 1, characterized in that, The boom mounting bases are symmetrically welded onto the lifting trolley.

9. The automatic hydraulic clamp for walking and yielding according to claim 1, characterized in that, The electrical control cabinet is an explosion-proof electrical control cabinet.

10. The automatic hydraulic clamp for walking and yielding according to claim 1, characterized in that, The automatic pliers assembly is a Type 12 automatic pliers assembly.

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