Automatic installation device for electrically heated shrink sleeve and related automatic installation method for electrically heated shrink sleeve

Abstract

The application discloses an automatic electric heating sleeve installation device and related automatic electric heating sleeve installation method. The device comprises an automatic electric heating sleeve installation execution mechanism, a locking steel belt assembly and a control device. The execution mechanism comprises a frame, a large arm assembly, an upper pressing plate assembly, an upper steel belt auxiliary assembly and a lower steel belt auxiliary assembly; the locking steel belt assembly comprises a steel belt and a motor locking assembly arranged at both ends of the steel belt. The control device is electrically connected with each assembly respectively, and is used for controlling the large arm assembly to press down to preliminarily clamp a pipeline, controlling the upper pressing plate assembly to overturn downward to make the first end of the electric heating sleeve curl, controlling the lower steel belt auxiliary assembly to overturn upward to make the second end of the electric heating sleeve curl and partially coincide with the first end, controlling the upper steel belt auxiliary assembly to overturn downward to make the upper and lower parts of the motor locking assembly align and lock to make the electric heating sleeve wrap the pipeline, and controlling each assembly to reset and withdraw. The application can realize full-process automatic installation of the electric heating sleeve at a pipeline joint of crude oil transportation.

Description

Technical Field

[0001] This invention relates to the field of corrosion protection and insulation technology for oil and gas pipelines, and in particular to an automatic installation device for electrothermal fusion sleeves and a related automatic installation method for electrothermal fusion sleeves. Background Technology

[0002] In existing crude oil pipeline projects, the fixing and welding of high-density polyethylene (HDPE) electrofusion sleeves is a crucial step in the anti-corrosion and insulation patching process. The installation quality of the electrofusion sleeves directly affects the construction quality of the insulation layer in the patching area. The HDPE electrofusion sleeve welding process mainly includes four steps: HDPE overlap area grinding, electrofusion sleeve polarization treatment, electrofusion sleeve fixing and welding, and airtightness testing. Traditional processes involve mechanized surface treatment of the weld joint, mechanized spraying followed by manual installation of the HDPE electrofusion sleeve, and finally polyurethane foam curing. This process is complex, inefficient, and suffers from uncontrollable clamping force.

[0003] Another existing technology, namely the patent with publication number CN222039655U, provides a device for auxiliary electrofusion sleeve repair welding. This device includes a welding table and support legs. A placement device is provided on the left side of the upper surface of the welding table, comprising a placement unit and a fixing unit. A welding device is provided on the right side of the welding table. The electrofusion sleeve repair welding device works by energizing an electromagnet, driving a magnetic rod to slide outward from the inside of the mounting hole and stretching an elastic rope, pushing an abutment plate outward to press the electrofusion sleeve into the inside of the sleeve, thus fixing it and preventing slippage of the electrofusion sleeve during subsequent welding. The drive motor moves the connecting rod from back to front inside the limiting slide groove, and drives the arc-shaped cutting blade to cut off the excess electrofusion sleeve at the material outlet. Then the welding gun welds the electrofusion sleeve, thus completing the repair welding process of the electrofusion sleeve. However, this device requires the pipe fitting to be welded to the electrofusion sleeve to be placed on the placement device in advance, and cannot realize the automatic clamping of the pipe fitting and the automatic installation of the electrofusion sleeve. The degree of automation is still low. On the other hand, for crude oil pipelines with large diameter and heavy weight, due to their bulky and difficult-to-handle characteristics, this technology is obviously not applicable to crude oil pipelines. Summary of the Invention

[0004] To address the problems of low efficiency, low automation, and uncontrollable clamping force in the manual installation of electrothermal sleeves in existing technologies, this invention proposes an automatic electrothermal sleeve installation device and related automatic electrothermal sleeve installation methods.

[0005] As a first aspect of the present invention, an embodiment of the present invention provides an automatic installation device for electrothermal sleeves, comprising: an automatic installation actuator for electrothermal sleeves, at least one locking steel strip assembly, and a control device;

[0006] The automatic installation actuator for the electrothermal sleeve includes: a frame, a boom assembly, an upper pressure plate assembly, an upper steel strip auxiliary assembly, and a lower steel strip auxiliary assembly; the boom assembly, the upper pressure plate assembly, and the upper steel strip auxiliary assembly are located on the upper part of the frame; the lower steel strip auxiliary assembly is located on the lower part of the frame.

[0007] The locking steel strip assembly includes: a steel strip and motor locking assemblies disposed at both ends of the steel strip; a portion of the motor locking assembly is detachably connected to the upper steel strip auxiliary assembly, and another portion of the motor locking assembly is detachably connected to the lower steel strip auxiliary assembly; the steel strip is located between the upper steel strip auxiliary assembly and the lower steel strip auxiliary assembly.

[0008] The control device is electrically connected to the boom assembly, the upper pressure plate assembly, the upper steel strip auxiliary assembly, and the lower steel strip auxiliary assembly, respectively, and is used to control the boom assembly, the upper pressure plate assembly, the upper steel strip auxiliary assembly, and the lower steel strip auxiliary assembly to complete the automatic installation of the electrothermal sleeve according to the preset procedure.

[0009] In one embodiment, the control device is specifically used to control the boom assembly, the upper pressure plate assembly, the upper steel strip auxiliary assembly, and the lower steel strip auxiliary assembly to complete the automatic installation of the electrothermal sleeve according to the following steps: controlling the boom assembly to press down so that the automatic installation actuator of the electrothermal sleeve initially clamps the crude oil transport pipeline to be processed; further controlling the upper pressure plate assembly to flip downward so that the first end of the electrothermal sleeve curls; controlling the lower steel strip auxiliary assembly to flip upward so that the second end of the electrothermal sleeve curls and partially overlaps with the first end of the electrothermal sleeve; controlling the upper steel strip auxiliary assembly to flip downward so that the two parts of the motor locking assembly located on the upper steel strip auxiliary assembly and the lower steel strip auxiliary assembly are aligned; controlling the upper pressure plate assembly to flip upward to return to the initial position; locking the two parts of the motor locking assembly vertically so that the electrothermal sleeve inside the steel strip tightly wraps the crude oil transport pipeline; after the motor locking assembly separates from the upper steel strip auxiliary assembly and the lower steel strip auxiliary assembly respectively, controlling the boom assembly, the upper steel strip auxiliary assembly, and the lower steel strip auxiliary assembly to flip back to the initial position and retract.

[0010] In one embodiment, the motor locking assembly includes: a motor, a coupling, a locking screw, and a locking nut; wherein the motor is connected to the locking screw via the coupling; the locking nut has threads that mate with the locking screw; the motor, the coupling, and the locking screw are disposed at one end of the steel strip, and the locking nut is disposed at the other end of the steel strip; the locking screw is inserted into the locking nut, and under the control of the control device, the motor drives the locking screw to rotate to shorten the distance between the two ends of the steel strip, thereby locking the two ends of the steel strip.

[0011] In one embodiment, an upper bending arc plate and a lower bending arc plate are respectively provided at both ends of the steel strip; a first lifting lug is provided on the upper bending arc plate, and a first lifting point is provided at the end of the upper steel strip auxiliary assembly; the upper bending arc plate is detachably connected to the upper steel strip auxiliary assembly through the first lifting lug and the first lifting point; a second lifting lug is provided on the lower bending arc plate, and a second lifting point is provided at the end of the lower steel strip auxiliary assembly; the lower bending arc plate is detachably connected to the lower steel strip auxiliary assembly through the second lifting lug and the second lifting point.

[0012] In one embodiment, the lower steel strip auxiliary assembly includes: a plurality of lower hook plates arranged in parallel and a plurality of lower hook plate cylinders for driving each lower hook plate to rotate; the plurality of lower hook plates are coaxially connected by a common lower hook plate rotating shaft; one end of each of the two lower hook plates disposed at both ends of the common lower hook plate rotating shaft is hinged to the top end of the output shaft of each lower hook plate cylinder, so as to rotate along the common lower hook plate rotating shaft under the action of the lower hook plate cylinder; the other end of the lower hook plate is provided with a second lifting point; the number of locking steel strip assemblies is two, and the second lifting lugs at the ends of the two locking steel strip assemblies are detachably connected to the second lifting points on the two lower hook plates at both ends of the common lower hook plate rotating shaft.

[0013] In one embodiment, among the plurality of lower hook plates, at least one lower hook plate located between two lower hook plates at both ends of the common rotating shaft of the lower hook plates has one end hinged to the top end of the output shaft of the corresponding lower hook plate cylinder, and the other end is provided with a first arc-shaped support plate. The end of the first arc-shaped support plate is provided with a limit stop bar, which is used to limit the end of the electrothermal sleeve while supporting the electrothermal sleeve.

[0014] In one embodiment, the upper steel strip auxiliary assembly includes: two parallel upper hook plates and a plurality of upper hook plate cylinders for driving each upper hook plate to rotate; the two upper hook plates are coaxially connected via a common upper hook plate rotating shaft; the two upper hook plates correspond to the positions of two lower hook plates located at both ends of the common lower hook plate rotating shaft; one end of each upper hook plate is connected to the top end of the output shaft of the upper hook plate cylinder to rotate along the common upper hook plate rotating shaft under the action of the upper hook plate cylinder; the other end of each upper hook plate is provided with a first lifting point; and the first lifting lugs at the ends of the two locking steel strip assemblies are detachably connected to the first lifting points on the two upper hook plates.

[0015] In one embodiment, the upper pressure plate assembly includes: an upper pressure plate support frame, an upper pressure plate cylinder, a pair of triangular connecting rods, a pair of pressure plate hook connecting rods, a pair of pressure plate hooks, and a second arc-shaped support plate connected to the ends of the pair of pressure plate hooks; the cylinder body of the upper pressure plate cylinder is fixed on the upper pressure plate support frame, and its output shaft is hinged to the first ends of the pair of triangular connecting rods respectively through Y-type joints; the second ends of the triangular connecting rods and the first ends of the pressure plate hook connecting rods are respectively hinged to the pressure plate hooks; the third ends of the triangular connecting rods and the second ends of the pressure plate hook connecting rods are hinged to the upper pressure plate support frame; the triangular connecting rods, the pressure plate hook connecting rods, and the pressure plate hooks form a multi-link mechanism, so that the extension and retraction of the output shaft of the upper pressure plate cylinder drives the pressure plate hooks to extend at a preset angle or retract at a preset angle through the triangular connecting rods and the pressure plate hook connecting rods.

[0016] In one embodiment, the lower edge of the pressure plate hook is an arc surface and its end is connected to the second arc-shaped support plate. The arc surface of the lower edge of the pressure plate hook and the arc surface of the second arc-shaped support plate form a continuous arc surface.

[0017] In one embodiment, the upper pressure plate assembly further includes: a T-shaped positioning arm; the positioning arm is located above the triangular connecting rod, the pressure plate hook connecting rod, the pressure plate hook, and the second arc-shaped support plate; the positioning arm includes a support rod and a transverse stop connected to the end of the support rod; the support rod is connected to the upper pressure plate support frame; a positioning groove is provided on the transverse stop; the positioning arm is used to limit the left and right edges and ends of the electrothermal fusion sleeve when the upper pressure plate assembly presses down on the electrothermal fusion sleeve.

[0018] In one embodiment, there are two boom assemblies, symmetrically arranged on both sides of the frame; each boom assembly includes: a boom mounting plate, a boom cylinder, and a Y-shaped boom; the boom cylinder is rotatably mounted on the boom mounting plate; the output shaft of the boom cylinder is hinged to one end of the boom via a Y-joint; the other end of the boom is provided with a clamping block; the bending point of the Y-shape of the boom is hinged to the boom mounting plate via a connecting shaft, so that the boom rotates around the connecting shaft of the bending point as the rotation axis under the drive of the boom cylinder.

[0019] In one embodiment, the frame is further provided with at least two retractable positioning blocks; the retractable positioning blocks are capable of extending and retracting radially upward along the crude oil transport pipeline; when the boom assembly presses down to clamp the crude oil transport pipeline, the clamping block of the boom and the at least two retractable positioning blocks respectively clamp different positions around the crude oil transport pipeline.

[0020] As a second aspect of the present invention, embodiments of the present invention provide an automatic installation method for electrothermal fusion sleeves, the method being implemented using an automatic installation device for electrothermal fusion sleeves as described in any of the first aspects, the method comprising:

[0021] The electrofusion fitting is inserted between the upper pressure plate assembly and the lower steel strip auxiliary assembly;

[0022] The boom assembly is controlled to press down so that the electrothermal sleeve automatic installation actuator initially clamps the crude oil delivery pipeline to be processed.

[0023] The upper pressure plate assembly is controlled to flip downwards to cause the first end of the electrothermal sleeve to curl, and the lower steel strip auxiliary assembly is controlled to flip upwards to cause the second end of the electrothermal sleeve to curl and partially overlap with the first end.

[0024] Control the upper steel strip auxiliary assembly to flip downwards, so that the two parts of the motor locking assembly located on the upper steel strip auxiliary assembly and located on the lower steel strip auxiliary assembly are aligned;

[0025] Control the upper pressure plate assembly to flip upwards to return to the initial position; lock the two parts of the motor locking assembly vertically to make the electrothermal sleeve inside the steel strip tightly wrap the crude oil conveying pipeline;

[0026] After the motor locking assembly separates from the upper steel belt auxiliary assembly and the lower steel belt auxiliary assembly respectively, the boom assembly, the upper steel belt auxiliary assembly and the lower steel belt auxiliary assembly are controlled to flip to return to the initial position and retract.

[0027] In one embodiment, when the motor locking assembly includes a motor, a coupling, a locking screw, and a locking nut, locking the two parts of the motor locking assembly vertically to tightly wrap the crude oil conveying pipeline with the electrothermal sleeve inside the steel strip includes:

[0028] Based on the preset torque parameters corresponding to the clamping force, the motor is controlled to drive the locking screw to rotate by a rotation angle corresponding to the clamping force through the coupling, thereby shortening the distance between the opening and closing nut and the motor in the vertical direction, so as to shorten the distance between the two ends of the steel strip and achieve locking of the two ends of the steel strip.

[0029] In one embodiment, when the upper pressure plate assembly includes an upper pressure plate support frame, an upper pressure plate cylinder, a pair of triangular connecting rods, a pair of pressure plate hook connecting rods, a pair of pressure plate hooks, and a second arc-shaped support plate connected to the ends of the pair of pressure plate hooks, the upper pressure plate cylinder output shaft is controlled to extend, and the pressure plate hooks are driven to extend at a preset angle through the triangular connecting rods and the pressure plate hook connecting rods, wrapping around the first end of the electrothermal sleeve and causing it to curl at a preset angle; and when the upper pressure plate assembly needs to return to the initial position, the upper pressure plate cylinder output shaft is controlled to extend, and the pressure plate hooks are driven to retract at a preset angle through the triangular connecting rods and the pressure plate hook connecting rods, so as to return to the initial position.

[0030] The beneficial effects of the above-mentioned technical solutions provided in the embodiments of the present invention include at least the following:

[0031] The above-mentioned automatic installation device and related automatic installation method for electrothermal sleeves provided in this embodiment of the invention include an automatic installation actuator, at least one locking steel strip assembly, and a control device. The actuator comprises a boom assembly, an upper pressure plate assembly, and an upper steel strip auxiliary assembly located on the upper part of a frame, while the lower steel strip auxiliary assembly is located on the lower part of the frame. The locking steel strip assembly includes a steel strip and a motor locking assembly, with one part detachably connected to the upper steel strip auxiliary assembly and the other part detachably connected to the lower steel strip auxiliary assembly. The control device controls the boom assembly, upper pressure plate assembly, upper steel strip auxiliary assembly, and lower steel strip auxiliary assembly to complete the automatic installation of the electrothermal sleeve according to a preset procedure. This structure allows the control device to coordinate and control multiple actuators to operate sequentially according to a predetermined time sequence, achieving full automation of the electrothermal sleeve installation process from pre-positioning and curling to wrapping the crude oil pipeline. This effectively replaces the manual installation method of electrothermal sleeves in traditional processes, significantly improving construction efficiency. Furthermore, the motor-locking assembly provides precise and controllable clamping force, avoiding uneven clamping force caused by manual operation, and ensuring the adhesion quality between the electrofusion sleeve and the outer wall of the pipe and the sealing reliability of the joint. In addition, the motor-locking assembly is detachably connected to the upper and lower steel strip auxiliary assemblies. This ensures the stability of the installation process and allows the actuator to quickly retract after the steel strip is locked, without waiting for the electrofusion sleeve to finish heating and welding before proceeding to the next installation step, significantly improving equipment turnover efficiency and overall work efficiency.

[0032] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 A perspective view of the automatic installation device for electrothermal sleeves provided in an embodiment of the present invention;

[0036] Figure 2A schematic diagram showing the state of the boom assembly at two positions according to an embodiment of the present invention;

[0037] Figure 3 This is an assembly diagram showing the relationship between the boom assembly and the frame provided in an embodiment of the present invention.

[0038] Figure 4 This is a schematic diagram of the upper pressure plate assembly provided in an embodiment of the present invention in the retracted state of the pressure plate hook;

[0039] Figure 5 This is a schematic diagram of the upper pressure plate assembly provided in an embodiment of the present invention with the pressure plate hook extended.

[0040] Figure 6 This is a schematic diagram of the structure of the lower steel strip auxiliary assembly provided in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram showing the state of the upper steel strip auxiliary assembly at two locations according to an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the locking steel strip assembly in the locked state according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the instruction manual:

[0044] 1-Framework;

[0045] 2-Boom assembly; 21-Boom mounting plate; 22-Boom cylinder; 23-Boom; 24-Clamping block;

[0046] 3-Upper pressure plate assembly; 31-Upper pressure plate support frame; 32-Upper pressure plate cylinder; 33-Triangular connecting rod; 34-Pressure plate hook connecting rod; 35-Pressure plate hook; 36-Second arc-shaped support plate; 37-Positioning long arm; 331-First end of triangular connecting rod; 332-Second end of triangular connecting rod; 333-Third end of triangular connecting rod; 341-First end of pressure plate hook connecting rod; 342-Second end of pressure plate hook connecting rod; 371-Support rod; 372-Transverse stop bar;

[0047] 4-Upper steel strip auxiliary assembly; 41-Upper hook plate; 42-Upper hook plate cylinder; 43-First lifting point;

[0048] 5-Lower steel strip auxiliary assembly; 51-Lower hook plate; 52-Lower hook plate cylinder; 53-Lower hook plate common shaft; 54-First arc-shaped support plate; 55-Limit stop bar; 56-Second lifting point;

[0049] 6-Locking steel strip assembly; 61-Steel strip; 62-Motor locking assembly; 621-Motor; 622-Coupling; 623-Locking screw; 624-Opening nut; 625-Locking switch; 63-Upper curved plate; 64-Lower curved plate; 65-First lifting lug; 66-Second lifting lug;

[0050] 7-Extendable positioning block. Detailed Implementation

[0051] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0052] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] This invention provides an automatic installation device for electrothermal welding sleeves, referring to... Figure 1 and 7 As shown, it includes: an automatic installation actuator for electrothermal welding sleeves, at least one locking steel strip assembly 6, and a control device (not shown in the figure).

[0055] An automatic installation actuator for electrothermal sleeves includes: a frame 1, a boom assembly 2, an upper pressure plate assembly 3, an upper steel strip auxiliary assembly 4, and a lower steel strip auxiliary assembly 5; the boom assembly 2, the upper pressure plate assembly 3, and the upper steel strip auxiliary assembly 4 are located on the upper part of the frame 1; the lower steel strip auxiliary assembly 5 is located on the lower part of the frame 1.

[0056] The locking steel strip assembly 6 includes: a steel strip 61 and motor locking assemblies 62 disposed at both ends of the steel strip 61; a portion of the motor locking assembly 62 is detachably connected to the upper steel strip auxiliary assembly 4, and another portion of the motor locking assembly 62 is detachably connected to the lower steel strip auxiliary assembly 5; the steel strip 61 is located between the upper steel strip auxiliary assembly 4 and the lower steel strip auxiliary assembly 5.

[0057] The control device is electrically connected to the boom assembly 2, the upper pressure plate assembly 3, the upper steel strip auxiliary assembly 4, and the lower steel strip auxiliary assembly 5, respectively, and is used to control the boom assembly 2, the upper pressure plate assembly 3, the upper steel strip auxiliary assembly 4, and the lower steel strip auxiliary assembly 5 to complete the installation of the electrothermal sleeve according to the preset procedure.

[0058] In one embodiment, the aforementioned control device is specifically used to automatically install the electrothermal sleeve according to the following steps: controlling the boom assembly 2 to press down so that the automatic installation actuator of the electrothermal sleeve initially clamps the crude oil delivery pipeline to be processed; further controlling the upper pressure plate assembly 3 to flip downward so that the first end of the electrothermal sleeve curls; and controlling the lower steel strip auxiliary assembly 5 to flip upward so that the second end of the electrothermal sleeve curls and partially overlaps with the first end of the electrothermal sleeve. The upper steel strip auxiliary assembly 4 flips downward, aligning the two parts of the motor locking assembly 62 located on the upper steel strip auxiliary assembly 4 and the lower steel strip auxiliary assembly 5; the upper pressure plate assembly 3 is controlled to flip upward to return to its initial position; the two parts of the motor locking assembly 62 are locked vertically to tightly wrap the crude oil conveying pipeline with the electrothermal sleeve inside the steel strip 61; after the motor locking assembly 62 separates from the upper steel strip auxiliary assembly 4 and the lower steel strip auxiliary assembly 5 respectively, the boom assembly 2, the upper steel strip auxiliary assembly 4 and the lower steel strip auxiliary assembly 5 are controlled to flip to return to their initial positions and retract.

[0059] The automatic installation device for electrothermal fusion sleeves provided in this embodiment of the invention controls the upper pressure plate assembly 3 to flip downwards, causing the first end of the electrothermal fusion sleeve to curl, and the lower steel strip auxiliary assembly 5 to flip upwards, causing the second end of the electrothermal fusion sleeve to curl and partially overlap with the first end of the electrothermal fusion sleeve. Further, the upper steel strip auxiliary assembly 4 is controlled to flip downwards, aligning and locking the two parts of the motor locking assembly 62, causing the electrothermal fusion sleeve inside the steel strip 61 to tightly wrap around the crude oil transport pipeline. Then, the boom assembly 2, the upper steel strip auxiliary assembly 4, and the lower steel strip auxiliary assembly 5 are controlled to flip back to their initial positions and retract. This embodiment of the invention can achieve full automation of the electrothermal fusion sleeve process from pre-positioning, curling and bonding to tightly wrapping the crude oil transport pipeline, effectively replacing manual operation, significantly improving construction efficiency, and ensuring the uniformity and controllability of the clamping force, guaranteeing the bonding quality between the electrothermal fusion sleeve and the outer wall of the crude oil transport pipeline, and improving the sealing reliability of the joint.

[0060] The structure and function of each component of the above-mentioned automatic electrothermal sleeve installation device are described in detail below.

[0061] In the automatic installation device for electrothermal welding sleeves provided in the embodiments of the present invention, refer to Figure 1 and Figure 3 As shown, frame 1 serves as the supporting foundation for the entire actuator. Its shape needs to be adapted to the outer contour of the crude oil pipeline to be processed. For example, it can be a semi-enclosed arc-shaped frame structure so that the pipeline can enter frame 1 from the side and be clamped and fixed.

[0062] Reference Figure 1 and Figure 3 As shown, in terms of spatial layout, the boom assembly 2, upper pressure plate assembly 3, and upper steel strip auxiliary assembly 4 are located at the upper part of frame 1, while the lower steel strip auxiliary assembly 5 is located at the lower part of frame 1. The upper components are primarily responsible for actively pressing down to cause the top of the electrothermal sleeve to curl downwards, while the lower components are responsible for supporting the bottom of the electrothermal sleeve and causing it to curl upwards. Together, they achieve full circumferential wrapping of the electrothermal sleeve. It should be understood that although... Figure 1 A specific component arrangement is shown, but in other embodiments, as long as the functional positional relationship of each component relative to the pipeline is satisfied, the specific installation orientation can be adjusted according to the construction scenario.

[0063] A portion of the motor locking assembly 62 is detachably connected to the upper steel strip auxiliary assembly 4, and another portion is detachably connected to the lower steel strip auxiliary assembly 5. This allows the automatic electrothermal sleeve installation mechanism to detach and install other locking steel strip assemblies 6 after the locking steel strip assembly 6 has been locked to secure the crude oil pipeline, and to begin the next automatic electrothermal sleeve installation process, without waiting for the current electrothermal sleeve to finish heating before detaching. This separate design significantly improves the equipment's turnaround efficiency and avoids the drawback of traditional integrated clamps that require waiting for the electrothermal sleeve to finish heating and welding before overall disassembly.

[0064] In this embodiment, the control device may be an electrical control box integrated with a PLC or a microcontroller, which can accurately coordinate the timing of actions of each execution unit by receiving sensor feedback or preset programs.

[0065] Before installing the electrothermal sleeve, at least one locking steel strip assembly 6 needs to be installed between the upper steel strip auxiliary assembly 4 and the lower steel strip auxiliary assembly 5. The locking steel strip assembly 6 is initially open. At this time, the steel strip 61 is C-shaped, which facilitates the electrothermal sleeve to enter between the upper pressure plate assembly 3 and the lower steel strip auxiliary assembly 5 (and is also located between the two open ends of the C-shaped steel strip 61).

[0066] In one embodiment, the steel strip 61 may be a flexible metal strip.

[0067] In one embodiment, refer to Figure 8 As shown, the motor locking assembly 62 includes: a motor 621, a coupling 622, a locking screw 623, and a locking nut 624; wherein, the motor 621 is connected to the locking screw 623 through the coupling 622.

[0068] The opening and closing nut 624 has a thread that mates with the locking screw 623;

[0069] The motor 621, the coupling 622 and the locking screw 623 are located at one end of the steel belt 61, and the opening and closing nut 624 is located at the other end of the steel belt 61;

[0070] The locking screw 623 is inserted into the opening and closing nut 624. Under the control of the control device, the motor 621 drives the locking screw 623 to rotate to shorten the distance between the two ends of the steel strip 61, thereby locking the two ends of the steel strip 61.

[0071] Reference Figure 8 As shown, when the motor 621, coupling 622 and locking screw 623 are inserted into the opening nut 624, they can be locked by the locking switch 625 on the opening nut 624 to prevent the locking screw 623 from coming out.

[0072] This motor-coupling-screw-nut transmission chain design converts the rotational motion of the motor 621 into linear tension force. Compared to traditional hydraulic or pneumatic clamping methods, the screw and nut have a defined displacement-rotation angle relationship, allowing the control device to pre-set the current or torque parameters corresponding to the appropriate clamping force, or to manually control the output current or torque parameters of the device in real time. This applies a precise radial clamping force to the electrothermal sleeve, preventing the electrothermal sleeve from wrapping the crude oil transport pipeline too tightly or too loosely (too tight will cause pits on the surface of the electrothermal sleeve, while too loose will create gaps between the electrothermal sleeve and the outer insulation layer of the crude oil transport pipeline, affecting the sealing effect).

[0073] In addition, the lead screw structure usually has a certain self-locking capability, which can maintain the locked state after the motor 621 is powered off, preventing the loss of clamping force due to accidental power failure, and improving the safety and reliability of the construction process.

[0074] In one embodiment, refer to Figure 8 As shown, the two ends of the steel strip 61 are respectively provided with an upper curved plate 63 and a lower curved plate 64;

[0075] Reference Figure 6 , Figure 7 and Figure 8As shown, a first lifting lug 65 is provided on the upper curved plate 63, and a first lifting point 43 is provided at the end of the upper steel strip auxiliary component 4; the upper curved plate 63 is detachably connected to the upper steel strip auxiliary component 4 through the first lifting lug 65 and the first lifting point 43; a second lifting lug 66 is provided on the lower curved plate 64, and a second lifting point 56 is provided at the end of the lower steel strip auxiliary component 5; the lower curved plate 64 is detachably connected to the lower steel strip auxiliary component 5 through the second lifting lug 66 and the second lifting point 56.

[0076] In practice, the detachable connection between the first lifting lug 65 and the first lifting point 43, and between the second lifting lug 66 and the second lifting point 56, can be achieved through methods such as pin insertion and quick snap.

[0077] For example, Figure 7 A connection scheme is demonstrated by passing a pin through an alignment hole on the first lifting lug 65 and the first lifting point 43, which allows operators or an automatic pin mechanism to easily perform loading and unloading.

[0078] The connection method for the second lifting lug 66 and the second lifting point 56 can also be adopted in a similar way, which will not be described in detail here.

[0079] The arc-shaped structure design of the upper curved plate 63 and the lower curved plate 64 allows for better fit between the electrothermal sleeve and the outer wall of the pipe, ensuring a uniform distribution of locking force along the circumferential direction and preventing localized stress concentration that could damage the surface of the electrothermal sleeve. The detachable connection between the lifting lugs and lifting points allows the locking steel strip assembly to be quickly mounted on the actuator and quickly separated after locking, ensuring stability during installation and shortening the equipment turnaround time.

[0080] In one embodiment, refer to Figure 6 As shown, the lower steel strip auxiliary assembly 5 includes:

[0081] Multiple hook plates 51 arranged in parallel and multiple hook plate cylinders 52 for driving each hook plate 51 to flip.

[0082] Multiple hook plates 51 are coaxially connected via a shared pivot 53.

[0083] Two lower hook plates 51 are disposed at both ends of the common rotating shaft 53 of the lower hook plates. One end of each lower hook plate 51 is hinged to the top end of the output shaft of each lower hook plate cylinder 52, so as to rotate along the common rotating shaft 53 of the lower hook plates under the action of the lower hook plate cylinder 52. The other end of each lower hook plate 51 is provided with a second lifting point 56. There are two locking steel strip assemblies 6, and the second lifting lugs 66 at the ends of the two locking steel strip assemblies 6 are detachably connected to the second lifting points 56 on the two lower hook plates 51 at both ends of the common rotating shaft 53 of the lower hook plates. The lower hook plate cylinders 52 can be disposed on the cylinder fixing shaft, and the cylinder fixing shaft of each lower hook plate cylinder 52 is independently disposed.

[0084] In this embodiment of the invention, multiple lower hook plates can be driven independently, enabling local adaptive adjustment based on the actual fit of the electrothermal sleeve. When the pipeline has slight ellipticity or the electrothermal sleeve thickness is uneven, the independent lower hook plate cylinders allow the corresponding lower hook plates to fit against the pipe wall at different angles or with different forces, eliminating local gaps or overpressure phenomena that may occur due to rigid overall movement. Simultaneously, multiple lower hook plates are coaxially connected via a shared rotating shaft, ensuring the geometric concentricity of the overall movement. The symmetrical arrangement of two locking steel strip assemblies on each side ensures that the radial pressure applied to the electrothermal sleeve by the steel strip during tightening is symmetrical about the pipeline's central plane, preventing the electrothermal sleeve from twisting or tilting on one side.

[0085] In one embodiment, refer to Figure 6 As shown, among the plurality of lower hook plates 51, at least one lower hook plate 51 located between the two lower hook plates 51 at both ends of the lower hook plate common rotating shaft 53 has one end hinged to the top end of the output shaft of the corresponding lower hook plate cylinder 52, and the other end is provided with a first arc-shaped support plate 54. The end of the first arc-shaped support plate 54 is provided with a limit stop 55, which is used to limit the end of the electrothermal sleeve while supporting the electrothermal sleeve.

[0086] The limiting strip 55 is used to limit the end of the electrofusion sleeve while supporting it. Specifically, the curvature radii of the first arc-shaped support plate 54 and the lower hook plate 51 are matched to form a continuous arc surface, which can provide a continuous support surface for the lower part of the electrofusion sleeve, so as to better wrap the outer surface of the electrofusion sleeve and wrap around the upper part of the electrofusion sleeve to make it curl at a preset curvature. The limiting strip 55 extends tangentially from the end of the first arc-shaped support plate 54, which effectively limits the end of the electrofusion sleeve, improves the alignment accuracy of the joint, and reduces the difficulty of joint alignment.

[0087] Reference Figure 6 As shown, the lower steel strip auxiliary assembly 5 includes three lower hook plates 51, each of which is driven by a lower hook plate cylinder 52. The three lower hook plates 51 are coaxially connected via a common rotating shaft 53.

[0088] The two lower hook plates 51 on the left and right are provided with second lifting points 56, which are detachably connected to the second lifting lugs 66 at the end of the corresponding locking steel strip assembly 6.

[0089] The lower hook plate 51 in the middle does not have a structure with a lifting point, but instead adopts a structure of an arc-shaped support plate (first arc-shaped support plate 54).

[0090] Multiple hook plates 51 can be driven independently. Compared with an integral flipping mechanism, this structure has the advantage of being able to make local adaptive adjustments according to the actual bonding state of the electrothermal sleeve. For example, when the pipe has slight ellipticity or the electrothermal sleeve thickness is uneven, the independent hook plate cylinder 52 can allow the corresponding hook plate 51 to bond to the pipe wall at different angles or with different forces, thereby eliminating local gaps or overpressure phenomena that may be caused by rigid integral movement, and ensuring uniform force during the curling process.

[0091] Although each lower hook plate 51 is driven by an independent lower hook plate cylinder 52, multiple lower hook plates 51 are coaxially connected through a common lower hook plate rotating shaft 53, and they still share the same rotation reference axis, ensuring the geometric concentricity of the overall movement.

[0092] Two locking steel strip assemblies 6 are set on the left and right sides respectively. This double-sided symmetrical arrangement ensures that the radial pressure applied by the steel strip 61 to the electrothermal sleeve during the tightening process is symmetrical about the central plane of the pipeline, preventing the electrothermal sleeve from twisting or tilting on one side.

[0093] In one embodiment, refer to Figure 7 As shown, the upper steel strip auxiliary assembly 4 includes: two upper hook plates 41 arranged in parallel and a plurality of upper hook plate cylinders 42 for driving each upper hook plate 41 to flip.

[0094] The two upper hook plates 41 are coaxially connected by a common upper hook plate pivot (not shown in the figure); the two upper hook plates 41 correspond to the positions of the two lower hook plates 51 located at both ends of the common lower hook plate pivot 53.

[0095] One end of the upper hook plate 41 is connected to the top end of the output shaft of the upper hook plate cylinder 42, so as to rotate along the common shaft of the upper hook plate under the action of the upper hook plate cylinder 42; the other end of the upper hook plate 41 is provided with the first lifting point 43;

[0096] The first lifting lugs 65 at the ends of the two locking steel strip assemblies 6 are detachably connected to the first lifting points 43 on the two upper hook plates 41, respectively.

[0097] The upper steel strip auxiliary component and the lower steel strip auxiliary component have a corresponding relationship in their positions at both ends, which enables the upper and lower parts of the locking steel strip component to be precisely aligned when locking, avoiding locking failure or uneven force due to misalignment.

[0098] Figure 7 The image shows the state of the two upper hook plates 41 in two different positions. The dashed line represents the initial state of the two upper hook plates 41, and the solid line represents the downward state of the two upper hook plates 41. Figure 7 It also displays the positional relationship between the motor locking assembly 62 (steel belt 61, etc. are omitted and not shown) and the first lifting point 43.

[0099] In one embodiment, refer to Figure 4 and Figure 5 As shown, the upper pressure plate assembly 3 includes: an upper pressure plate support frame 31, an upper pressure plate cylinder 32, a pair of triangular connecting rods 33, a pair of pressure plate hook connecting rods 34, a pair of pressure plate hooks 35, and a second arc-shaped support plate 36 connected to the ends of the pair of pressure plate hooks 35.

[0100] Figure 4 This is a schematic diagram of the upper pressure plate assembly in the retracted state of the pressure plate hook.

[0101] Figure 5 This is a schematic diagram of the upper pressure plate assembly with the pressure plate hook extended.

[0102] Further reference Figure 4 As shown, the cylinder body of the upper pressure plate cylinder 32 is fixed on the upper pressure plate support frame 31, and its output shaft is hinged to the first end 331 of a pair of triangular connecting rods through Y-type joints.

[0103] The second end 332 of the triangular connecting rod and the first end 341 of the pressure plate hook connecting rod are respectively hinged to the pressure plate hook 35; the third end 333 of the triangular connecting rod and the second end 342 of the pressure plate hook connecting rod are hinged to the upper pressure plate support frame 31; the triangular connecting rod 33, the pressure plate hook connecting rod 34 and the pressure plate hook 35 form a multi-link mechanism, so that the extension and retraction of the output shaft of the upper pressure plate cylinder 32 drives the pressure plate hook 35 to extend at a preset angle or retract at a preset angle through the triangular connecting rod 33 and the pressure plate hook connecting rod 34.

[0104] As one implementation method, refer to Figure 4 and Figure 5 As shown, the lower edge of the pressure plate hook 35 is arc-shaped and its end is connected to the second arc-shaped support plate 36. The arc-shaped surface of the lower edge of the pressure plate hook 35 and the arc-shaped surface of the second arc-shaped support plate 36 form a continuous arc surface. The continuous arc surface can better wrap around the outer surface of the electrothermal sleeve to surround the upper part of the electrothermal sleeve and make it curl at a predetermined arc.

[0105] In this embodiment of the invention, the linear motion of the cylinder is converted into the back-and-forth swing of the pressure plate hook 35 along a specific trajectory by the multi-link mechanism described above. This ensures that the second arc-shaped support plate 36 can provide good downward pressure when it extends, curling the upper end of the electrothermal sleeve into a preset arc shape to facilitate overlap with the lower end. It also ensures that after the upper and lower ends of the electrothermal sleeve are aligned, it can be easily withdrawn without being pinched by the overlapping edges of the electrothermal sleeve or having its surface scratched during withdrawal.

[0106] The aforementioned multi-link mechanism causes the second arc-shaped support plate 36 to extend or retract. Figure 5 This shows the extended state of the second arc-shaped support plate 36. Figure 4 The image shows the retracted state of the second arc-shaped support plate 36.

[0107] In one embodiment, refer to Figure 4 As shown, the upper pressure plate assembly 3 further includes: a T-shaped positioning long arm 37; the positioning long arm is located above the triangular connecting rod 33, the pressure plate hook connecting rod 34, the pressure plate hook 35, and the second arc-shaped support plate 36;

[0108] The positioning arm includes a support rod 371 and a transverse stop bar 372 connected to the end of the support rod 371;

[0109] Support rod 371 is connected to the upper pressure plate support frame 31;

[0110] A positioning groove is provided on the transverse baffle 372;

[0111] The positioning arm is used to limit the left and right edges and ends of the electrothermal sleeve when the upper pressure plate assembly 3 presses down on the electrothermal sleeve.

[0112] In this embodiment of the invention, the positioning groove on the T-shaped positioning arm 37 is used to physically limit the edge of the electrothermal sleeve during the installation process, ensuring that the joints at both ends of the electrothermal sleeve are aligned and avoiding skewing, misalignment, or curling.

[0113] In one embodiment, refer to Figure 1 , Figure 2 and Figure 3 As shown, there are two large arm assemblies 2, symmetrically arranged on both sides of the frame 1. Figure 1 and Figure 3 Only one side of the boom assembly 2 is shown in the diagram.

[0114] Boom assembly 2 includes: boom mounting plate 21, boom cylinder 22, and Y-shaped boom 23; wherein:

[0115] The boom cylinder 22 is rotatably mounted on the boom mounting plate 21;

[0116] The output shaft of the boom cylinder 22 is hinged to one end of the boom 23 via a Y-type connector; a clamping block 24 is provided at the other end of the boom 23.

[0117] The Y-shaped bend point of the boom 23 is hinged to the boom mounting plate 21 via a connecting shaft, so that the boom 23 rotates around the connecting shaft of the bend point under the drive of the boom cylinder 22.

[0118] Figure 2 and Figure 3 The image shows two different states of the Y-shaped upper arm 23, represented by solid and dashed lines respectively. The dashed line represents the state where the Y-shaped upper arm 23 is not pressed down, while the solid line represents the state where the Y-shaped upper arm 23 is pressed down.

[0119] The symmetrical arrangement of the two large arm components 2 makes the clamping force at both ends of the crude oil transport pipeline more balanced and more stable. After being clamped in place, the axis of the crude oil transport pipeline is perpendicular to the side of the frame 1, providing an accurate positioning basis for the subsequent curling of the electrothermal sleeve.

[0120] When the boom assembly performs a downward pressing action, the clamping block applies the active force from above, while the retractable positioning block located below or to the side provides reverse support and a limiting reference. Regardless of how the pipe diameter fluctuates within a preset range, multiple contact points can automatically find the geometric center, aligning the pipe axis with the theoretical centerline of the device. This not only eliminates installation eccentricity caused by pipe diameter tolerances or ellipticity, but also effectively resists circumferential slippage caused by torque in subsequent processes such as upper pressure plate flipping and steel strip locking, avoiding problems such as device swaying and sleeve torsion common in traditional single-point support solutions.

[0121] It should be understood that the telescopic positioning block 7 can be driven by various methods such as manual screw adjustment, spring self-locking, pneumatic push rod, or electric lead screw, as long as it can reliably fix and quickly adjust the radial position. Furthermore, the number of telescopic positioning blocks 7 is not limited to two; depending on the pipe diameter and weight, it can be set to three, four, or even more. This embodiment of the invention does not limit this.

[0122] The surface of the clamping block 24 that contacts the pipe may be fitted with a rubber pad or similar elastic pad to increase the coefficient of friction and protect the pipe's anti-corrosion layer from rigid indentation damage.

[0123] Compared to the straight arm structure, the Y-shaped boom structure naturally avoids other auxiliary facilities or insulation layer protrusions above the pipeline, providing a larger motion envelope space and reducing the risk of interference.

[0124] The cooperation between the boom clamping block 24 and the telescopic positioning block 7 forms a multi-point radial clamping and positioning, which improves the alignment accuracy and stability of the automatic installation actuator on the pipeline.

[0125] In one embodiment, refer to Figure 1 and Figure 3 As shown, at least two retractable positioning blocks 7 are also provided on the frame 1; the retractable positioning blocks 7 can extend and retract radially along the crude oil conveying pipeline; when the boom assembly 2 presses down to clamp the crude oil conveying pipeline, the clamping block 24 of the boom and the at least two retractable positioning blocks 7 respectively clamp different positions around the crude oil conveying pipeline.

[0126] Clamping block 24 and telescopic positioning block 7 form multi-point radial clamping and positioning in the circumference of the pipe. No matter how the pipe diameter fluctuates within the preset range, multiple contact points can automatically find the geometric center, making the pipe axis coincide with the theoretical center line of the device, eliminating the installation eccentricity caused by the ellipticity of the pipe. In subsequent processes such as the flipping of the upper pressure plate and the locking of the steel strip, which generate tangential forces, multi-point constraints can effectively resist the circumferential slippage trend caused by torque, avoiding the problems of device shaking and sleeve torsion commonly found in traditional single-point support schemes.

[0127] Based on the same inventive concept, embodiments of the present invention also provide an automatic installation method for electrothermal sleeves using the aforementioned automatic electrothermal sleeve installation device, the method comprising the following steps:

[0128] S1. Insert the electrofusion fitting between the upper pressure plate assembly and the lower steel strip auxiliary assembly;

[0129] The operator or automatic feeding mechanism places the HDPE electrofusion sleeve to be installed in the opening area of ​​the automatic electrofusion sleeve installation actuator. After installation, the electrofusion sleeve forms an open C-shape.

[0130] S2. Control the boom assembly to press down so that the electrothermal sleeve automatic installation actuator initially clamps the crude oil transport pipeline to be processed;

[0131] The initial clamping force must be sufficient to resist the tangential force generated during the subsequent curling and locking process, prevent the device from sliding along the pipeline axis or deflecting circumferentially, and ensure that the coaxiality of the fusion sleeve and the pipeline meets the welding process requirements.

[0132] S3. Control the upper pressure plate assembly to flip downwards so that the first end of the electrothermal sleeve is curled, and control the lower steel strip auxiliary assembly to flip upwards so that the second end of the electrothermal sleeve is curled and partially overlaps with the first end of the electrothermal sleeve.

[0133] Utilizing the specific movement trajectory of the upper pressure plate assembly, the upper edge of the C-shaped electrofusion sleeve is fitted against the pipe wall, forming an overlap shape that meets welding requirements. The lower steel strip auxiliary assembly and the upper pressure plate assembly form an opposing wrapping action, ensuring that the two ends of the electrofusion sleeve accurately overlap at the predetermined position, avoiding misalignment or excessive gaps that could affect sealing performance.

[0134] S4. Control the upper steel strip auxiliary assembly to flip downwards, so that the two parts of the motor locking assembly located on the upper steel strip auxiliary assembly and the lower steel strip auxiliary assembly are aligned.

[0135] This alignment action prepares for locking, ensuring that the locking interfaces at both ends of the steel strip are on the same axis or in a position that facilitates engagement, preventing locking failure or uneven force due to misalignment.

[0136] S5. Control the upper pressure plate assembly to flip upward to return to the initial position; lock the two parts of the motor locking assembly vertically to make the electrothermal sleeve in the steel strip tightly wrap the crude oil conveying pipeline;

[0137] The retraction of the upper pressure plate assembly creates space for the locking operation, while the motor locking assembly takes over the clamping force, providing an appropriate radial clamping force to ensure that the hot melt sleeve and the anti-corrosion layer fit tightly while avoiding being too loose or too tight.

[0138] S6. After the motor locking assembly separates from the upper steel belt auxiliary assembly and the lower steel belt auxiliary assembly respectively, control the boom assembly, the upper steel belt auxiliary assembly and the lower steel belt auxiliary assembly to flip back to the initial position and retract.

[0139] At this point, a single installation cycle is complete, and the device returns to standby mode for the next operation. Through the aforementioned automated timing control, this embodiment effectively replaces the tedious manual alignment, pressing, and fastening operations, significantly improving construction efficiency and ensuring consistent installation quality for each weld joint through standardized program control.

[0140] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. This disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of the invention fall within the scope of the claims of the invention and their equivalents, the invention is also intended to include these modifications and variations.

Claims

1. An automatic installation device for electrothermal welding sleeves, characterized in that, include: The electrothermal sleeve automatic installation actuator, at least one locking steel strip assembly (6), and control device; The automatic installation actuator for the electrothermal sleeve includes: a frame (1), a boom assembly (2), an upper pressure plate assembly (3), an upper steel strip auxiliary assembly (4), and a lower steel strip auxiliary assembly (5); the boom assembly (2), the upper pressure plate assembly (3), and the upper steel strip auxiliary assembly (4) are located on the upper part of the frame (1); the lower steel strip auxiliary assembly (5) is located on the lower part of the frame (1). The locking steel strip assembly (6) includes: a steel strip (61) and motor locking assemblies (62) disposed at both ends of the steel strip (61); a part of the motor locking assembly (62) is detachably connected to the upper steel strip auxiliary assembly (4), and the other part of the motor locking assembly (62) is detachably connected to the lower steel strip auxiliary assembly (5); the steel strip (61) is located between the upper steel strip auxiliary assembly (4) and the lower steel strip auxiliary assembly (5); The control device is electrically connected to the boom assembly (2), the upper pressure plate assembly (3), the upper steel strip auxiliary assembly (4), and the lower steel strip auxiliary assembly (5) respectively, and is used to control the boom assembly (2), the upper pressure plate assembly (3), the upper steel strip auxiliary assembly (4), and the lower steel strip auxiliary assembly (5) to complete the automatic installation of the electrothermal sleeve according to the preset procedure.

2. The apparatus as claimed in claim 1, characterized in that, The control device is specifically used to control the boom assembly (2), the upper pressure plate assembly (3), the upper steel strip auxiliary assembly (4), and the lower steel strip auxiliary assembly (5) to complete the automatic installation of the electrothermal sleeve according to the following steps: controlling the boom assembly (2) to press down so that the electrothermal sleeve automatic installation actuator initially clamps the crude oil conveying pipeline to be processed; further controlling the upper pressure plate assembly (3) to flip downward so that the first end of the electrothermal sleeve curls; controlling the lower steel strip auxiliary assembly (5) to flip upward so that the second end of the electrothermal sleeve curls and partially overlaps with the first end of the electrothermal sleeve; controlling the upper steel strip auxiliary assembly (5) to press down ... The auxiliary component (4) is flipped downwards, aligning the two parts of the motor locking component (62) located on the upper steel strip auxiliary component (4) and the lower steel strip auxiliary component (5); the upper pressure plate component (3) is controlled to flip upwards to return to its initial position; the two parts of the motor locking component (62) are locked vertically to ensure that the electrothermal sleeve inside the steel strip (61) tightly wraps the crude oil conveying pipeline; after the motor locking component (62) is separated from the upper steel strip auxiliary component (4) and the lower steel strip auxiliary component (5) respectively, the boom component (2), the upper steel strip auxiliary component (4) and the lower steel strip auxiliary component (5) are controlled to flip to return to their initial positions and retract.

3. The apparatus as described in claim 1, characterized in that, The motor locking assembly (62) includes: a motor (621), a coupling (622), a locking screw (623), and a locking nut (624); wherein the motor (621) is connected to the locking screw (623) through the coupling (622); The opening and closing nut (624) has threads that mate with the locking screw (623); The motor (621), the coupling (622) and the locking screw (623) are located at one end of the steel belt (61), and the opening and closing nut (624) is located at the other end of the steel belt (61); The locking screw (623) is inserted into the opening nut (624). Under the control of the control device, the motor (621) drives the locking screw (623) to rotate to shorten the distance between the two ends of the steel strip (61) and realize the locking of the two ends of the steel strip (61).

4. The apparatus as claimed in claim 1, characterized in that, The steel strip (61) is also provided with an upper curved plate (63) and a lower curved plate (64) at both ends; The upper curved plate (63) is provided with a first lifting lug (65), and the end of the upper steel strip auxiliary assembly (4) is provided with a first lifting point (43); the upper curved plate (63) is detachably connected to the upper steel strip auxiliary assembly (4) through the first lifting lug (65) and the first lifting point (43); The lower curved plate (64) is provided with a second lifting lug (66), and the end of the lower steel strip auxiliary assembly (5) is provided with a second lifting point (56); the lower curved plate (64) is detachably connected to the lower steel strip auxiliary assembly (5) through the second lifting lug (66) and the second lifting point (56).

5. The apparatus as described in claim 4, characterized in that, The lower steel strip auxiliary assembly (5) includes: Multiple hook plates (51) arranged in parallel and multiple hook plate cylinders (52) for driving each hook plate (51) to flip. Multiple lower hook plates (51) are coaxially connected via a common pivot (53); Two lower hook plates (51) are disposed at both ends of the common shaft (53) of the lower hook plates. One end of the lower hook plate (51) is hinged to the top of the output shaft of each lower hook plate cylinder (52) so as to rotate along the common shaft (53) of the lower hook plates under the action of the lower hook plate cylinder (52); the other end of the lower hook plate (51) is provided with the second lifting point (56). The number of locking steel strip assemblies (6) is two. The second lifting lugs (66) at the ends of the two locking steel strip assemblies (6) are detachably connected to the second lifting points (56) on the two lower hook plates (51) at both ends of the common shaft (53) of the lower hook plates.

6. The apparatus as claimed in claim 5, characterized in that, Among the plurality of lower hook plates (51), at least one lower hook plate (51) located between two lower hook plates (51) at both ends of the common lower hook plate shaft (53) has one end hinged to the top of the output shaft of the corresponding lower hook plate cylinder (52), and the other end is provided with a first arc-shaped support plate (54). The end of the first arc-shaped support plate (54) is provided with a limit stop (55) for limiting the end of the electrothermal sleeve while supporting the electrothermal sleeve.

7. The apparatus as claimed in claim 5, characterized in that, The upper steel strip auxiliary assembly (4) includes: two side-by-side upper hook plates (41) and multiple upper hook plate cylinders (42) for driving each upper hook plate (41) to flip. The two upper hook plates (41) are coaxially connected by a common upper hook plate pivot; the two upper hook plates (41) correspond to the positions of the two lower hook plates (51) located at both ends of the common lower hook plate pivot (53); One end of the upper hook plate (41) is connected to the top of the output shaft of the upper hook plate cylinder (42) so that it can rotate along the common shaft of the upper hook plate under the action of the upper hook plate cylinder (42); the other end of the upper hook plate (41) is provided with the first lifting point (43); The first lifting lugs (65) at the ends of the two locking steel strip assemblies (6) are detachably connected to the first lifting points (43) on the two upper hook plates (41).

8. The apparatus as claimed in claim 1, characterized in that, The upper pressure plate assembly (3) includes: an upper pressure plate support frame (31), an upper pressure plate cylinder (32), a pair of triangular connecting rods (33), a pair of pressure plate hook connecting rods (34), a pair of pressure plate hooks (35), and a second arc-shaped support plate (36) connected to the end of the pair of pressure plate hooks (35); The cylinder body of the upper pressure plate cylinder (32) is fixed on the upper pressure plate support frame (31), and its output shaft is hinged to the first end (331) of a pair of triangular connecting rods through a Y-type connector. The second end (332) of the triangular connecting rod and the first end (341) of the pressure plate hook connecting rod are respectively hinged to the pressure plate hook (35); the third end (333) of the triangular connecting rod and the second end (342) of the pressure plate hook connecting rod are hinged to the upper pressure plate support frame (31); the triangular connecting rod (33), the pressure plate hook connecting rod (34) and the pressure plate hook (35) form a multi-link mechanism so that the extension and retraction of the output shaft of the upper pressure plate cylinder (32) drives the pressure plate hook (35) to extend at a preset angle or retract at a preset angle through the triangular connecting rod (33) and the pressure plate hook connecting rod (34).

9. The apparatus as claimed in claim 8, characterized in that, The lower edge of the pressure plate hook (35) is arc-shaped and its end is connected to the second arc-shaped support plate (36). The arc-shaped surface of the lower edge of the pressure plate hook (35) and the arc-shaped surface of the second arc-shaped support plate (36) form a continuous arc surface.

10. The apparatus as claimed in claim 8, characterized in that, The upper pressure plate assembly (3) further includes: a T-shaped positioning long arm (37); the positioning long arm (37) is located above the triangular connecting rod (33), the pressure plate hook connecting rod (34), the pressure plate hook (35) and the second arc-shaped support plate (36); The positioning arm (37) includes a support rod (371) and a transverse stop (372) connected to the end of the support rod (371); The support rod (371) is connected to the upper pressure plate support frame (31); The transverse baffle (372) is provided with a positioning groove; The positioning arm (37) is used to limit the left and right edges and ends of the electrothermal sleeve when the upper pressure plate assembly (3) presses down on the electrothermal sleeve.

11. The apparatus according to any one of claims 1-10, characterized in that, The number of the upper arm components (2) is two, which are symmetrically arranged on both sides of the frame (1); The boom assembly (2) includes: a boom mounting plate (21), a boom cylinder (22), and a Y-shaped boom (23); The boom cylinder (22) is rotatably mounted on the boom mounting plate (21); The output shaft of the boom cylinder (22) is hinged to one end of the boom (23) via a Y-type connector; a clamping block (24) is provided at the other end of the boom (23); The Y-shaped bend of the boom (23) is hinged to the boom mounting plate (21) via a connecting shaft, so that the boom (23) rotates around the connecting shaft of the bend under the drive of the boom cylinder (22).

12. The apparatus as claimed in claim 11, characterized in that, The frame (1) is also provided with at least two retractable positioning blocks (7); the retractable positioning blocks (7) can extend and retract radially along the crude oil pipeline; when the boom assembly (2) presses down to clamp the crude oil pipeline, the clamping block (24) of the boom (23) and the at least two retractable positioning blocks (7) clamp different positions around the crude oil pipeline.

13. An automatic installation method for electrothermal sleeves, implemented using the automatic installation device for electrothermal sleeves as described in any one of claims 1-12, characterized in that, The method includes: The electrothermal fusion assembly is inserted between the upper pressure plate assembly (3) and the lower steel strip auxiliary assembly (5); The boom assembly (2) is pressed down so that the electrothermal sleeve automatic installation actuator initially clamps the crude oil delivery pipeline to be processed; Control the upper pressure plate assembly (3) to flip downwards so that the first end of the electrothermal sleeve is curled, and control the lower steel strip auxiliary assembly (5) to flip upwards so that the second end of the electrothermal sleeve is curled and partially overlaps with the first end of the electrothermal sleeve; Control the upper steel belt auxiliary assembly (4) to flip downwards, so that the two parts of the motor locking assembly (62) located on the upper steel belt auxiliary assembly (4) and the lower steel belt auxiliary assembly (5) are aligned; Control the upper pressure plate assembly (3) to flip upward to return to the initial position; lock the two parts of the motor locking assembly (62) vertically so that the electrothermal sleeve in the steel strip tightly wraps the crude oil conveying pipeline; After the motor locking assembly (62) is separated from the upper steel belt auxiliary assembly (4) and the lower steel belt auxiliary assembly (5) respectively, the control boom assembly (2), the upper steel belt auxiliary assembly (4) and the lower steel belt auxiliary assembly (5) are flipped to return to the initial position and retract.

14. The automatic installation method for electrothermal fusion sleeves as described in claim 13, characterized in that, When the motor locking assembly (62) includes a motor (621), a coupling (622), a locking screw (623), and a split nut (624), locking the two parts of the motor locking assembly (62) vertically to tightly wrap the crude oil conveying pipeline with the electrothermal sleeve inside the steel strip includes: According to the preset torque parameters corresponding to the clamping force, the motor (621) is controlled to drive the locking screw (623) to rotate by a rotation angle corresponding to the clamping force through the coupling (622), thereby shortening the distance between the opening nut (624) and the motor (621) in the vertical direction, so as to shorten the distance between the two ends of the steel strip and realize the locking of the two ends of the steel strip.

15. The automatic installation method for electrothermal fusion sleeves as described in claim 13 or 14, characterized in that, When the upper pressure plate assembly (3) includes an upper pressure plate support frame (31), an upper pressure plate cylinder (32), a pair of triangular connecting rods (33), a pair of pressure plate hook connecting rods (34), a pair of pressure plate hooks (35), and a second arc-shaped support plate (36) connected to the end of the pair of pressure plate hooks (35), the upper pressure plate cylinder output shaft is controlled to extend, and the pressure plate hooks (35) are driven to extend at a preset angle through the triangular connecting rods (33) and the pressure plate hook connecting rods (34), so that they wrap around the first end of the electrothermal sleeve and cause it to curl at a preset angle; and when the upper pressure plate assembly (3) needs to return to the initial position, the upper pressure plate cylinder output shaft is controlled to extend, and the pressure plate hooks (35) are driven to retract at a preset angle through the triangular connecting rods (33) and the pressure plate hook connecting rods (34) to return to the initial position.

Images