A dismounting device for a hydrodynamic coupling

Abstract

This invention relates to a disassembly device for a hydraulic coupling, comprising a support frame, a connecting rod, an electric hammer, and a pressing assembly. The connecting rod is rotatably mounted on the support frame for connecting the hydraulic coupling. The electric hammer is slidably mounted on the support frame, with its sliding direction aligned with the axial direction of the connecting rod. The drive end of the electric hammer is connected to the support frame via the pressing assembly. During disassembly, the electric hammer is pushed away from the hydraulic coupling, causing the high-frequency impact generated by the hammer along the pushing direction to be transmitted to the support frame via the pressing assembly. The support frame then transmits this impact to the hydraulic coupling via the connecting rod, thereby moving the hydraulic coupling and achieving disassembly. Its advantages include rapid disassembly of the hydraulic coupling while significantly reducing the risk of equipment damage.

Description

Technical Field

[0001] This invention relates to the field of coal mine equipment technology, and in particular to a disassembly device for a hydraulic coupling. Background Technology

[0002] Hydraulic couplings are widely used in high-power transmission systems such as scraper conveyors and belt conveyors in underground coal mines. They are typically installed between the motor and the reducer, and are connected to the high-speed shaft of the reducer by an interference fit. When the reducer malfunctions and needs repair or replacement, the hydraulic coupling must be removed from the shaft.

[0003] In existing technologies, the disassembly of hydraulic couplings mainly employs methods such as hammering, heating, or gas cutting. Hammering directly strikes the coupling shell, which, being made of relatively soft aluminum alloy, is prone to deformation or cracking. Heating uses flame or induction heating to expand the mating parts, but the high temperature can damage the internal oil seals, leading to oil leaks. Gas cutting directly removes the coupling, which is time-consuming and labor-intensive, and can easily damage the reducer shaft, causing even greater equipment losses. All of these methods suffer from low disassembly success rates, easy damage to components, and long operation times, resulting in prolonged downtime for the coal mining system and severely impacting coal production. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a disassembly device for a hydraulic coupling, which solves the technical problems of low disassembly efficiency and easy damage to equipment caused by the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a disassembly device for a hydraulic coupler, comprising a support frame, a connecting rod, an electric hammer, and a pressing assembly. The connecting rod is rotatably mounted on the support frame for connecting the hydraulic coupler. The electric hammer is slidably mounted on the support frame, and the sliding direction of the electric hammer is the same as the axial direction of the connecting rod. The driving end of the electric hammer is connected to the support frame through the pressing assembly. During disassembly, the electric hammer is pushed away from the hydraulic coupler, so that the high-frequency impact generated by the electric hammer along the pushing direction is transmitted to the support frame through the pressing assembly. The support frame transmits the impact to the hydraulic coupler through the connecting rod, thereby driving the hydraulic coupler to move and achieving disassembly.

[0009] Optionally, the support frame includes a U-shaped frame and a connecting plate; the U-shaped frame is fixedly connected to the connecting plate, and the plane of the U-shaped frame and the connecting plate are perpendicular, and the two together form an accommodating space; the electric hammer is located in the accommodating space and is slidably installed on the U-shaped frame, and the driving end of the electric hammer abuts against the U-shaped frame through a top pressing component; a first connecting hole is provided on the connecting plate, and the connecting rod is rotatably inserted through the first connecting hole.

[0010] Optionally, the U-shaped frame includes a push beam and two connecting beams; the two connecting beams are arranged in parallel at both ends of the push beam, forming a U-shape; the connecting plate is fixedly connected to the free ends of the two connecting beams.

[0011] Optionally, the connecting rod includes, along its length, a hexagonal segment, a disc segment, a cylindrical segment, a first threaded segment, and a second threaded segment in sequence; the cylindrical segment is clearance-fitted with the first connecting hole; the hexagonal segment and the disc segment are located on the inner side of the connecting plate, and the first threaded segment and the second threaded segment are located on the outer side of the connecting plate;

[0012] The first threaded section is equipped with a limiting nut, and the axial distance between the limiting nut and the disc section is greater than the thickness of the connecting plate; the second threaded section is used for threaded connection of the hydraulic coupling.

[0013] Optionally, the diameters of the disk segment, cylindrical segment, first threaded segment, and second threaded segment decrease sequentially.

[0014] Optionally, a guide frame is fixedly installed on the electric hammer; the guide frame is slidably connected to the U-shaped frame.

[0015] Optionally, the guide frame includes a first semi-ring frame and a second semi-ring frame; the first semi-ring frame includes a first semi-ring segment and two first connecting segments located at both ends of the first semi-ring segment, and the two first connecting segments are provided with second connecting holes; the second semi-ring frame includes a second semi-ring segment and two second connecting segments located at both ends of the second semi-ring segment, and the two second connecting segments are provided with threaded holes; the two semi-ring frames are joined together to form a ring and sleeved on the electric hammer, the first connecting segment and the second connecting segment are mated, the second connecting hole and the threaded hole are connected, and a bolt passes through the second connecting hole and is threaded to the bolt hole; and the first connecting segment and the second connecting segment form a guide groove after mating, and the guide groove and the U-shaped frame are slidably connected.

[0016] Optionally, the pressing assembly includes a pressing head and a connector; the drive end of the electric hammer is connected to the pressing head via the connector, and the pressing head abuts against the support frame.

[0017] Optionally, the top pressure head includes an integrally formed top pressure section and a sleeve section; the top pressure section has a connecting groove that abuts against the support frame; the sleeve section has a square hole for inserting a connector.

[0018] Optionally, the connector includes an integrally formed square shank segment and a square segment; the square shank segment is inserted into the drive end of the electric hammer, and the square segment is inserted into a square hole.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this invention are:

[0021] This invention provides a disassembly device for a hydraulic coupler. A connecting rod is rotatably mounted on a support frame and threadedly connected to the hydraulic coupler. An electric hammer is slidably mounted on the support frame, sliding in the same direction as the connecting rod's axis. The drive end of the electric hammer abuts against the support frame via a pressing assembly. During disassembly, the operator pushes the electric hammer away from the hydraulic coupler. The high-frequency impact generated by the electric hammer is transmitted to the support frame via the pressing assembly, and then to the hydraulic coupler via the connecting rod, smoothly pulling the interference-fit hydraulic coupler off the shaft. The entire process eliminates the need for direct hammering, heating, or gas cutting of the hydraulic coupler, avoiding problems such as deformation and cracking of the aluminum alloy shell, high-temperature damage to the oil seal, and damage to the reducer shaft. Furthermore, it significantly shortens the disassembly time. Compared to existing technologies, it achieves rapid disassembly of the hydraulic coupler while significantly reducing the risk of equipment damage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the disassembly device for a hydraulic coupling according to Embodiment 1 of the present invention during use;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of a disassembly device for a hydraulic coupling according to Embodiment 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the disassembly device for a hydraulic coupling according to Embodiment 1 of the present invention from another angle;

[0026] Figure 5 This is an exploded view of the structure of a disassembly device for a hydraulic coupling according to Embodiment 1 of the present invention;

[0027] Figure 6 This is a schematic diagram of the support frame of Embodiment 1 of the present invention;

[0028] Figure 7 This is a schematic diagram of the connecting rod in Embodiment 1 of the present invention;

[0029] Figure 8 This is a schematic diagram of the guide frame structure of Embodiment 1 of the present invention;

[0030] Figure 9 This is a schematic diagram of the top pressure head according to Embodiment 1 of the present invention;

[0031] Figure 10 This is a schematic diagram of the connector structure in Embodiment 1 of the present invention.

[0032] [Explanation of Labels in the Attached Image]

[0033] 1: Support frame; 11: U-shaped frame; 111: Push beam; 112: Connecting beam; 12: Connecting plate; 13: First connecting hole;

[0034] 2: Connecting rod; 21: Hexagonal section; 22: Disc section; 23: Cylindrical section; 24: First threaded section; 25: Second threaded section; 26: Limit nut;

[0035] 3: Electric hammer; 31: Guide frame; 32: First semi-ring frame; 33: Second semi-ring frame; 34: First semi-ring section; 35: First connecting section; 36: Second semi-ring section; 37: Second connecting section; 38: Guide groove;

[0036] 41: Pressing head; 411: Pressing section; 412: Sleeve section; 42: Connecting piece; 421: Square handle section; 422: Square section;

[0037] 5: Hydraulic coupling. Detailed Implementation

[0038] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0039] Example 1:

[0040] like Figures 1-5 As shown, this embodiment provides a disassembly device for a hydraulic coupler, comprising a support frame 1, a connecting rod 2, an electric hammer 3, and a pressing assembly. The connecting rod 2 is rotatably mounted on the support frame 1 for connecting the hydraulic coupler 5. The electric hammer 3 is slidably mounted on the support frame 1, and the sliding direction of the electric hammer 3 is the same as the axial direction of the connecting rod 2. The driving end of the electric hammer 3 is connected to the support frame 1 through the pressing assembly. During disassembly, the electric hammer 3 is pushed away from the hydraulic coupler 5, so that the high-frequency impact generated by the electric hammer 3 along the pushing direction is transmitted to the support frame 1 through the pressing assembly. The support frame 1 transmits the impact to the hydraulic coupler 5 through the connecting rod 2, thereby driving the hydraulic coupler 5 to move and achieving disassembly.

[0041] Specifically, the connecting rod 2 is rotatably mounted on the support frame 1 and threadedly connected to the hydraulic coupler 5. The electric hammer 3 is slidably mounted on the support frame 1, with its sliding direction being the same as the axial direction of the connecting rod 2. The drive end of the electric hammer 3 abuts against the support frame 1 via a pressing assembly. During disassembly, the operator pushes the electric hammer 3 away from the hydraulic coupler 5. The high-frequency impact generated by the electric hammer 3 is transmitted to the support frame 1 via the pressing assembly, and then to the hydraulic coupler 5 via the connecting rod 2, smoothly pulling the interference-fit hydraulic coupler 5 off the shaft. Throughout the process, there is no need to directly strike, heat, or cut the hydraulic coupler 5, avoiding problems such as deformation and cracking of the aluminum alloy shell, high-temperature damage to the oil seal, and damage to the reducer shaft. Furthermore, it significantly shortens the disassembly time. Compared to existing technologies, it achieves rapid disassembly of the hydraulic coupler 5 while significantly reducing the risk of equipment damage.

[0042] Furthermore, such as Figures 3-6 As shown, the support frame 1 includes a U-shaped frame 11 and a connecting plate 12. The U-shaped frame 11 is fixedly connected to the connecting plate 12, and the plane of the U-shaped frame 11 and the connecting plate 12 are perpendicular, forming an accommodating space. The electric hammer 3 is located within the accommodating space and is slidably mounted on the U-shaped frame 11. The driving end of the electric hammer 3 abuts against the U-shaped frame 11 through a pressing assembly. A first connecting hole 13 is provided on the connecting plate 12, and the connecting rod 2 is rotatably inserted through the first connecting hole 13. Through the vertical fixed connection between the U-shaped frame 11 and the connecting plate 12, a compact frame structure is formed, which provides installation space for the electric hammer 3 and ensures the relative positional accuracy between the components.

[0043] Furthermore, such as Figure 6 As shown, the U-shaped frame 11 includes a push beam 111 and two connecting beams 112. The two connecting beams 112 are arranged parallel to both ends of the push beam 111, forming a U-shape. The connecting plate 12 is fixedly connected to the free ends of the two connecting beams 112. The push beam 111, as the direct component bearing the impact force of the electric hammer 3, is positioned corresponding to the pressing assembly to ensure that the impact force can act directly on the push beam 111. The two connecting beams 112 not only connect the push beam 111 and the connecting plate 12, but also provide a guiding foundation for the sliding of the electric hammer 3.

[0044] Furthermore, such as Figure 7As shown, the connecting rod 2, along its length, comprises a hexagonal segment 21, a disc segment 22, a cylindrical segment 23, a first threaded segment 24, and a second threaded segment 25. The cylindrical segment 23 has a clearance fit with the first connecting hole 13. The hexagonal segment 21 and the disc segment 22 are located inside the connecting plate 12, while the first threaded segment 24 and the second threaded segment 25 are located outside the connecting plate 12. A limiting nut 26 is provided on the first threaded segment 24, and the axial distance between the limiting nut 26 and the disc segment 22 is greater than the thickness of the connecting plate 12. The second threaded segment 25 is used for threaded connection to the hydraulic coupling 5. When the connecting rod 2 is not subjected to axial force, neither the disc segment 22 nor the limiting nut 26 contacts the connecting plate 12, allowing the connecting rod 2 to rotate freely relative to the support frame 1, facilitating the screwing of the second threaded segment 25 into the central hole of the hydraulic coupling 5. When the electric hammer 3 impacts and causes the support frame 1 to move away from the hydraulic coupler 5, the connecting plate 12 contacts the disc section 22 and pushes the connecting rod 2 to move synchronously, thereby transmitting the impact force to the hydraulic coupler 5. This axial clearance design ensures that the connecting rod 2 can rotate freely during installation and that the axial force can be reliably transmitted.

[0045] Furthermore, such as Figure 7 As shown, the diameters of the disc segment 22, cylindrical segment 23, first threaded segment 24, and second threaded segment 25 decrease sequentially. This stepped structure facilitates the functional division of each segment: the disc segment 22 is used for axial support, the cylindrical segment 23 is used for rotational engagement, the first threaded segment 24 is used to connect the limit nut 26, and the second threaded segment 25 is used to connect the hydraulic coupling 5. The structure is compact and easy to manufacture.

[0046] Furthermore, such as Figure 4 and Figure 5 As shown, a guide frame 31 is fixedly installed on the electric hammer 3, and the guide frame 31 is slidably connected to the U-shaped frame 11. The guide frame 31 slides and engages with the connecting beam 112 of the electric hammer 3 and the U-shaped frame 11, ensuring that the electric hammer 3 always moves along the axial direction of the connecting rod 2 during the impact process, avoiding the deviation of the impact force direction due to eccentric load, and ensuring that the impact energy is effectively applied to the axial pull of the hydraulic coupling 5.

[0047] Furthermore, such as Figure 8As shown, the guide frame 31 includes a first semi-ring frame 32 and a second semi-ring frame 33. The first semi-ring frame 32 includes a first semi-ring segment 34 and two first connecting segments 35 located at both ends of the first semi-ring segment 34, with second connecting holes provided on the two first connecting segments 35. The second semi-ring frame 33 includes a second semi-ring segment 36 and two second connecting segments 37 located at both ends of the second semi-ring segment 36, with threaded holes provided on the two second connecting segments 37. The two semi-ring frames are joined together to form a ring and fitted onto the electric hammer 3. The first connecting segments 35 and the second connecting segments 37 are mated together, and the second connecting holes and the threaded holes are connected. Bolts are passed through the second connecting holes and threaded into the bolt holes to fasten the two semi-ring frames to the outer circumference of the electric hammer 3. After the first connecting segments 35 and the second connecting segments 37 are mated together, a guide groove 38 is formed, and the guide groove 38 is slidably connected to the connecting beam 112 of the U-shaped frame 11. This split-type guide frame 31 structure is easy to install and disassemble, and can reliably clamp the electric hammer 3, forming a sliding guide structure that cooperates with the connecting beam 112.

[0048] Furthermore, such as Figure 5 , Figure 9 and Figure 10 As shown, the top-pressing assembly includes a top-pressing head 41 and a connector 42. The drive end of the electric hammer 3 is fixedly connected to the top-pressing head 41 via the connector 42, and the top-pressing head 41 abuts against the support frame 1. Specifically, the top-pressing head 41 includes an integrally formed top-pressing section 411 and a sleeve section 412. The top-pressing section 411 has a connecting groove that abuts against the push beam 111 of the support frame 1, and the sleeve section 412 has a square hole for the connector 42 to be inserted. The connector 42 includes an integrally formed square handle section 421 and a square section 422. The square handle section 421 is inserted into the clamp of the electric hammer 3, and the square section 422 is inserted into the square hole of the top-pressing head 41. This connection method allows the impact force of the electric hammer 3 to be directly transmitted to the top-pressing head 41 via the connector 42, and then abuts against the push beam 111 via the connecting groove of the top-pressing head 41, resulting in a short impact force transmission path and minimal loss.

[0049] Furthermore, in this embodiment, the U-shaped frame 11 of the support frame 1 is made of high-strength alloy steel and undergoes quenching and tempering heat treatment to improve its impact fatigue resistance and ensure that it does not deform or break under long-term high-frequency impact.

[0050] Furthermore, in this embodiment, the inner wall of the connecting groove of the top pressure head 41 is inlaid with a wear-resistant copper bushing to reduce the sliding friction between it and the top push beam 111, extend its service life, and ensure stable contact during the impact process.

[0051] The method of using the hydraulic coupler disassembly device provided in this embodiment is as follows: First, screw the second threaded section 25 of the connecting rod 2 into the internal thread of the center hole of the hydraulic coupler 5, so that the disassembly device and the hydraulic coupler 5 are fixed together. Then, start the electric hammer 3, and the operator holds the handle of the electric hammer 3 and applies a continuous pushing force away from the hydraulic coupler 5, so that the connecting groove of the top pressure head 41 is always pressed against the top push beam 111 of the support frame 1. After the electric hammer 3 is started, it automatically generates a high-frequency axial impact. The impact force is transmitted to the top pressure head 41 through the connecting piece 42. The top pressure head 41 applies the impact force to the top push beam 111, and the support frame 1 moves away from the hydraulic coupler 5 as a whole. The connecting plate 12 contacts the disc section 22 of the connecting rod 2 and pushes the connecting rod 2 to move synchronously. The connecting rod 2 drives the hydraulic coupler 5 to move axially through the second threaded section 25, and gradually pulls the hydraulic coupler 5 out of the interference fit shaft. After the hydraulic coupling 5 is completely disengaged from the shaft, turn off the electric hammer 3, loosen the connecting rod 2, separate the disassembly device from the hydraulic coupling 5, and complete the disassembly operation.

[0052] Example 2:

[0053] This embodiment provides a disassembly device for a hydraulic coupler, which includes all the structures of the disassembly device for a hydraulic coupler described in Embodiment 1.

[0054] In this embodiment, the disassembly device further includes a pushing mechanism, which comprises a push rod and a driving element. One end of the push rod is fixedly connected to the handle end of the electric hammer 3, and the other end of the push rod is connected to the output end of the driving element. The driving element is mounted on an independently set fixed base, which is not directly connected to the support frame 1. The fixed base can be the ground, a workbench, or an independent support frame, and is placed behind the hydraulic coupling during disassembly operations to keep it relatively independent from the support frame 1.

[0055] The drive element can be any one of a hydraulic cylinder, a pneumatic cylinder, or an electric actuator. When a hydraulic cylinder is used, the cylinder body is fixed to a fixed base via a mounting bracket, and the piston rod is fixedly connected to the push rod. The oil inlet and outlet of the hydraulic cylinder are connected to an external hydraulic station via hydraulic pipelines, and the extension and retraction of the piston rod are controlled by a hydraulic control valve.

[0056] The driving direction of the pushing mechanism is consistent with the impact direction of the electric hammer 3 (both pointing away from the hydraulic coupler). During disassembly, the electric hammer 3 is started first, and it automatically generates a high-frequency axial impact. At the same time, the pushing mechanism is started, and the driving element pushes the push rod. The push rod drives the electric hammer 3 to move away from the hydraulic coupler 5. Since the driving element of the pushing mechanism is installed on an independent fixed base, its reaction force is borne by the fixed base and will not be transmitted to the support frame 1. Therefore, it will not cancel out the impact force of the electric hammer 3. Under the continuous thrust of the pushing mechanism, the connecting groove of the top pressure head 41 is always pressed against the top push beam 111 of the support frame 1. The high-frequency impact force generated by the electric hammer 3 is transmitted to the top push beam 111 through the connecting part 42 and the top pressure head 41. The support frame 1 moves away from the hydraulic coupler 5 as a whole. The connecting plate 12 contacts the disc section 22 of the connecting rod 2 and pushes the connecting rod 2 to move synchronously. The connecting rod 2 drives the hydraulic coupler 5 to move axially through the second threaded section 25, gradually pulling the hydraulic coupler 5 out of the interference fit shaft.

[0057] The push mechanism and the electric hammer 3 are connected by a flexible method, such as the push rod being connected to the handle end of the electric hammer 3 through a ball joint or universal joint, to accommodate the slight vibration and sway that may occur when the electric hammer 3 impacts, and to ensure that the direction of the pushing force is always consistent with the axis of the electric hammer 3.

[0058] The pushing mechanism can be controlled manually or automatically. In manual control mode, the operator controls the start and stop of the drive element through a control switch and adjusts the thrust according to the disassembly progress. In automatic control mode, a displacement sensor can be installed on the electric hammer 3 or the support frame 1. When the displacement of the electric hammer 3 or the support frame 1 reaches a preset value, the pushing mechanism automatically stops to prevent excessive displacement from damaging the equipment.

[0059] As an alternative, the driving mechanism can also be a manual screw mechanism. The screw nut is fixed to the fixed base, and one end of the screw is connected to the electric hammer 3 via a push rod. The operator rotates the screw handwheel to push the electric hammer 3 away from the hydraulic coupling 5. The manual screw mechanism has a simple structure, requires no power source, and is suitable for situations where there is no hydraulic source or power supply on site.

[0060] This embodiment avoids the problem of reaction force and impact force canceling each other out on the support frame 1 by setting the pushing mechanism on an independent fixed base. This allows all the impact energy of the electric hammer 3 to be used to pull the hydraulic coupling 5, while also realizing automatic pushing of the electric hammer 3, further reducing labor intensity. The continuous and stable thrust provided by the pushing mechanism ensures that the top pressure head 41 and the top pushing beam 111 always maintain good contact, ensuring that every impact of the electric hammer 3 is effectively transmitted to the hydraulic coupling 5, improving disassembly efficiency and success rate.

[0061] Example 3:

[0062] This embodiment provides a disassembly device for a hydraulic coupler, which includes all the structures of the disassembly device for a hydraulic coupler described in Embodiment 1.

[0063] Furthermore, the support frame 1 includes a U-shaped frame 11 and a connecting plate 12. The U-shaped frame 11 and the connecting plate 12 are fixedly connected by high-strength gas metal arc welding. The weld joint is symmetrically provided with 3mm thick and 20mm high triangular reinforcing ribs on both sides of the joint between the connecting beam 112 and the connecting plate 12, with 2 ribs on each side to eliminate the risk of welding stress concentration. The central axis of the U-shaped frame 11 is perpendicular to the plane of the connecting plate 12. The two together form a semi-enclosed receiving space. The electric hammer 3 and the top pressure assembly are both arranged in this receiving space. The overall structure is compact, the force is balanced, and there is no risk of off-center load.

[0064] Furthermore, the U-shaped frame 11 includes a push beam 111 and two connecting beams 112. The two connecting beams 112 are arranged in parallel at both ends of the push beam 111, forming a U-shaped structure with the opening facing the connecting plate 12. The connecting plate 12 is fixedly connected to the free ends of the two connecting beams 112. In this embodiment, the parallel spacing between the two connecting beams 112 is 120-200mm, which is suitable for the outer diameter range of most conventional industrial electric hammers 3 on the market. The length of a single connecting beam 112 is 200-300mm, and it adopts a 30mm×20mm rectangular solid cross section. The thickness of the push beam 111 is 15-25mm, the width is the same as that of the connecting beams 112 (30mm), and the length matches the outer spacing of the two connecting beams 112, ensuring that the force-bearing surface of the push beam 111 completely covers the contact range of the top pressing component, and the impact force is transmitted without eccentric load. The U-shaped frame 11 is made of 40Cr high-strength alloy steel. The blank is subjected to overall quenching and tempering heat treatment, and the hardness is controlled at HB220-250, which conforms to the general specifications for mechanical design. The tensile strength is not less than 980MPa. The contact surface between the push beam 111 and the pressing component is subjected to high-frequency quenching treatment, with a hardened layer depth ≥2mm and a surface hardness of HRC45-50, which greatly improves the impact fatigue resistance and ensures that no plastic deformation, cracking or surface wear occurs under long-term high-frequency impact conditions.

[0065] Furthermore, the connecting plate 12 is integrally laser-cut from Q355B low-alloy high-strength steel plate with a thickness of 10-15mm, adapting to the disassembly force requirements of hydraulic couplers 5 of different specifications; a first connecting hole 13 is opened at the center of the connecting plate 12, which is a light hole with a diameter of 20-25mm, and the inner wall is machined by reaming, with a surface roughness Ra≤1.6μm, used to form a high-precision clearance fit with the connecting rod 2, which fully meets the general precision requirements of mechanical processing.

[0066] Furthermore, along its length, from the end closest to the hydraulic coupler 5 to the end furthest from the hydraulic coupler 5, the connecting rod 2 is coaxially provided with a second threaded section 25, a first threaded section 24, a cylindrical section 23, a disc section 22, and a hexagonal section 21. The entire rod is integrally machined from 40Cr alloy steel and heat-treated to achieve a hardness of HB220-250, ensuring structural strength and fatigue resistance under axial tension. The diameters of the disc segment 22, cylindrical segment 23, first threaded segment 24, and second threaded segment 25 decrease sequentially. The hexagonal segment 21 has a width across opposite sides of 22-27 mm and a length of 15-25 mm, and is compatible with standard open-end wrenches for tightening the connecting rod 2 to complete the threaded connection with the hydraulic coupling 5. The disc segment 22 has a diameter of 28-35 mm and a thickness of 6-10 mm. It is located on the inner side of the connecting plate 12 facing the U-shaped frame 11's accommodating space, serving as a buffer structure for axial force transmission. During disassembly, it fits against the inner surface of the connecting plate 12. The impact force of the bearing frame 1 is transmitted to the connecting rod 2 without loss; the diameter of the cylindrical section 23 matches the inner diameter of the first connecting hole 13, and the length is 12-20mm, forming a clearance fit with the first connecting hole 13. The clearance on one side is 0.05-0.1mm, which ensures that the connecting rod 2 can rotate freely relative to the connecting plate 12, while limiting the radial runout of the connecting rod 2, and ensuring the coaxiality of the axial force transmission; the first threaded section 24 adopts an M18-M22 metric coarse thread, with a length of 20-30mm, and is located on the connecting plate 12 facing the hydraulic system. On the outer side of the coupler 5, two hexagonal limit nuts 26 are installed on the first threaded section 24. A 1mm thick spring steel anti-loosening washer is placed between the two limit nuts 26 to form a double-nut anti-loosening structure, which prevents the nuts from loosening under high-frequency impact and causing failure of axial force transmission. The axial distance between the limit nuts 26 and the disc section 22 is 2-5mm larger than the thickness of the connecting plate 12, forming an axial clearance. This ensures that the connecting rod 2 can rotate freely relative to the bearing frame 1 during installation, facilitating thread engagement, and also prevents excessive force transmission during axial impact. The idle stroke ensures rapid and reliable transmission of impact force; the second threaded section 25 adopts M16-M24 metric coarse thread with a length of 30-80mm, which is fully compatible with the internal thread specifications of the center hole of the mainstream YOX series hydraulic coupling 5 on the market. It is used to engage with the internal thread of the center hole of the hydraulic coupling 5 to be disassembled. At the same time, it is equipped with 3 sets of replaceable connecting rods with 2 sections, with thread specifications of M16, M20 and M24 respectively, which can be compatible with the center hole threads of most models of hydraulic couplings 5 ​​on the market, greatly improving the universality and adaptability of the device.

[0067] Furthermore, the electric hammer 3 is an industrial-grade dual-purpose hammer with both hammer and pick modes, with a rated impact frequency of 3000-4500 times / minute and a single impact energy of 3-15J. It can be flexibly selected according to the specifications of the hydraulic coupler 5 to be disassembled. Among them, 3-8J is suitable for small hydraulic couplers 5, and 8-15J is suitable for medium-sized interference fit hydraulic couplers 5, which fully covers the conventional disassembly conditions in industrial sites. A guide frame 31 is fixedly installed on the outer circle of the electric hammer 3. The guide frame 31 is slidably connected to the two connecting beams 112 of the U-shaped frame 11, ensuring that the electric hammer 3 always moves along the axial direction of the connecting rod 2 during the impact process, avoiding radial off-center load that causes the impact force direction to deviate, and ensuring effective transmission of impact energy.

[0068] Furthermore, the guide frame 31 includes a first semi-ring frame 32 and a second semi-ring frame 33, both made of 45# steel and heat-treated. The first semi-ring frame 32 includes a first semi-ring section 34 and two first connecting sections 35 located at both ends of the first semi-ring section 34, each of which has a second connecting hole. The second semi-ring frame 33 includes a second semi-ring section 36 and two second connecting sections 37 located at both ends of the second semi-ring section 36, each of which has a threaded hole. The two semi-ring frames are joined together to form a ring around the outer circumference of the electric hammer 3 body. The first connecting sections 35 and the second connecting sections 37 are mated together. The second connecting holes and the threaded holes are coaxially connected. Bolts are passed through the second connecting holes and threaded into the threaded holes to secure the two semi-ring frames to the electric hammer 3 body. Simultaneously, it is equipped with three sets of semi-ring sections with different inner diameters, namely 45mm, 55mm, and 65mm, which can be adapted to commercially available industrial electric hammers 3 with an outer diameter of 40-80mm, further improving the versatility of the device; the first connecting section 35 and the second connecting section 37 are connected to form a guide groove 38, which is slidably connected to the connecting beam 112 of the U-shaped frame 11. The single-sided fitting clearance between the guide groove 38 and the connecting beam 112 is 0.1-0.2mm, which meets the general tolerance requirements of linear sliding fit. The inner wall of the guide groove 38 is inlaid with a 0.5mm thick polytetrafluoroethylene wear-resistant liner, which not only ensures that the electric hammer 3 slides smoothly along the connecting beam 112, but also reduces sliding friction wear, while limiting the radial runout of the electric hammer 3, ensuring that the sliding direction is completely coincident with the axial direction of the connecting rod 2.

[0069] Furthermore, the top-pressure assembly includes a top-pressure head 41 and a connector 42, both of which are made of 40CrNiMo high-strength alloy steel and undergo overall tempering and surface quenching treatment to achieve a surface hardness of HRC48-52, ensuring structural strength and wear resistance under high-frequency impact. The drive end of the electric hammer 3 is coaxially fixedly connected to the top-pressure head 41 through the connector 42, and the top-pressure head 41 abuts against the push beam 111 of the support frame 1, forming a complete impact transmission path.

[0070] Furthermore, the top pressure head 41 includes an integrally formed top pressure section 411 and a sleeve section 412. The top pressure section 411 has a diameter of 40-60mm and a thickness of 12-20mm. One end of the top pressure section 411 facing the push beam 111 has a U-shaped connecting groove that matches the cross section of the push beam 111. The inner wall of the connecting groove is fixed with a 1mm thick tin bronze wear-resistant bushing by interference fit, which reduces the sliding friction between the top pressure head 41 and the push beam 111, extends the service life, and ensures stable contact between the two during the impact process, avoiding impact noise and uneven load. The sleeve section 412 has a square hole that matches the connector 42 at the end away from the top pressure section 411. The inner wall is precision milled to achieve a fitting accuracy of H7, ensuring coaxial assembly accuracy.

[0071] Furthermore, the connector 42 includes an integrally formed square shank section 421 and a square section 422. The square shank section 421 is inserted and fixed into the drive end chuck of the electric hammer 3, and is compatible with the general chuck specifications of conventional electric hammers 3 on the market. The square section 422 and the square hole of the top pressure head 41 adopt a transition fit (H7 / k6), which not only ensures the coaxiality of the assembly and the stability of the impact transmission, but also facilitates on-site disassembly and replacement, completely avoiding the problem of interference fits that cannot be disassembled on-site. This ensures that the impact force of the electric hammer 3 can be transmitted to the top pressure head 41 without loss through the connector 42, and then from the top pressure head 41 to the support frame 1. The impact transmission path is short, the energy loss is small, and there is no reverse cancellation.

[0072] Furthermore, the disassembly device in this embodiment is equipped with safety protection components that comply with the general safety specifications for industrial equipment operation. These components include an axial limit stop, an anti-detachment safety rope, and an insulating protective sleeve. The axial limit stop is made of 20mm thick Q235 steel plate and is detachably fixed to the equipment housing of the hydraulic coupler 5 to be disassembled by bolts. It is located on the axial movement path of the hydraulic coupler 5 to prevent equipment collisions or personnel injuries when the hydraulic coupler 5 suddenly detaches. The anti-detachment safety rope is made of 6mm diameter aviation steel wire rope, with both ends fixed to the connecting plate 12 of the support frame 1 and the fixed point of the equipment to be disassembled by shackles, respectively, to prevent the device from accidentally slipping and falling during disassembly. The insulating protective sleeve is made of flame-retardant rubber and is fitted onto the handle and power cord connector of the electric hammer 3. Its insulation level is not lower than Class II, which complies with the GB / T3787-2017 Safety Specifications for Handheld Power Tools, preventing the risk of electric shock in humid industrial environments.

[0073] Furthermore, this embodiment is fully compatible with the pushing mechanism described in Embodiment 2. The pushing mechanism includes a push rod, a driving element, and an independent fixed base. One end of the push rod is flexibly connected to the handle end of the electric hammer 3 via a ball joint, which can adapt to the slight vibration and sway during the impact of the electric hammer 3, ensuring that the direction of the pushing force is always consistent with the axis of the electric hammer 3. The other end of the push rod is coaxially and fixedly connected to the output end of the driving element. The driving element can be any one of a hydraulic cylinder, a pneumatic cylinder, an electric push rod, or a manual screw mechanism. When a hydraulic cylinder is used, the cylinder body of the hydraulic cylinder is fixed to the independent fixed base via a mounting seat. The fixed base is a cast iron counterweight base with a weight of not less than 50 kg. During disassembly, it is placed behind the hydraulic coupler 5 and has no direct connection with the support frame 1, ensuring that the hydraulic coupling is in good working order. The reaction force pushed by the cylinder is fully borne by the fixed base and will not be transmitted to the support frame 1, thus avoiding cancellation with the impact force of the electric hammer 3. The hydraulic cylinder is equipped with an automatic control system, including a PLC controller, a wire-type displacement sensor and a touch screen. The fixed end of the displacement sensor is installed on the connecting plate 12 of the support frame 1, and the moving end is installed on the body of the electric hammer 3. It can detect the displacement of the electric hammer 3 relative to the support frame 1 in real time. During disassembly, the disassembly stroke of 50-150mm can be preset through the touch screen, which is perfectly matched with the conventional interference fit length between the hydraulic coupler 5 and the shaft. When the displacement sensor detects that the displacement reaches the preset value, the PLC controller automatically controls the hydraulic cylinder to stop extending and triggers an audible and visual warning to prevent excessive displacement from damaging the equipment.

[0074] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a manufacturable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" of the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0077] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A disassembly device for a hydraulic coupling, characterized in that, include: The support frame (1), connecting rod (2), electric hammer (3), and top pressure assembly; The connecting rod (2) is rotatably mounted on the support frame (1) for connecting the hydraulic coupling (5); The electric hammer (3) is slidably mounted on the support frame (1), and the sliding direction of the electric hammer (3) is the same as the axial direction of the connecting rod (2); the driving end of the electric hammer (3) is connected to the support frame (1) through the top pressure assembly. During disassembly, the electric hammer (3) is pushed away from the hydraulic coupler (5), so that the high-frequency impact generated by the electric hammer (3) along the pushing direction is transmitted to the support frame (1) through the top pressure component. The support frame (1) is transmitted to the hydraulic coupler (5) through the connecting rod (2), thereby driving the hydraulic coupler (5) to move and realize disassembly.

2. The disassembly device for the hydraulic coupling as described in claim 1, characterized in that, The support frame (1) includes a U-shaped frame (11) and a connecting plate (12); The U-shaped frame (11) is fixedly connected to the connecting plate (12), and the plane where the U-shaped frame (11) and the connecting plate (12) are located is perpendicular, and the two together form an accommodating space; The electric hammer (3) is located in the receiving space and is slidably mounted on the U-shaped frame (11). The driving end of the electric hammer (3) abuts against the U-shaped frame (11) through the top pressing assembly. A first connecting hole (13) is provided on the connecting plate (12), and the connecting rod (2) is rotatably inserted through the first connecting hole (13).

3. The disassembly device for the hydraulic coupling as described in claim 2, characterized in that, The U-shaped frame (11) includes a push beam (111) and two connecting beams (112). Two connecting beams (112) are arranged in parallel at both ends of the jacking beam (111), forming a U-shape; The connecting plate (12) is fixedly connected to the free ends of the two connecting beams (112).

4. The disassembly device for the hydraulic coupling as described in claim 2, characterized in that, The connecting rod (2) includes, along its length, a hexagonal segment (21), a disc segment (22), a cylindrical segment (23), a first threaded segment (24), and a second threaded segment (25); The cylindrical section (23) is clearance-fitted with the first connecting hole (13); the hexagonal section (21) and the disc section (22) are located on the inner side of the connecting plate (12), and the first threaded section (24) and the second threaded section (25) are located on the outer side of the connecting plate (12); The first threaded section (24) is provided with a limiting nut (26), and the axial distance between the limiting nut (26) and the disc section (22) is greater than the thickness of the connecting plate (12); The second threaded section (25) is used for threaded connection of the hydraulic coupling (5).

5. The disassembly device for the hydraulic coupling as described in claim 4, characterized in that, The diameters of the disk segment (22), the cylindrical segment (23), the first threaded segment (24), and the second threaded segment (25) decrease sequentially.

6. The disassembly device for the hydraulic coupling as described in claim 2, characterized in that, A guide frame (31) is fixedly installed on the electric hammer (3); The guide frame (31) is slidably connected to the U-shaped frame (11).

7. The disassembly device for the hydraulic coupling as described in claim 6, characterized in that, The guide frame (31) includes a first semi-ring frame (32) and a second semi-ring frame (33); The first semi-ring frame (32) includes a first semi-ring section (34) and two first connecting sections (35) located at both ends of the first semi-ring section (34), and the two first connecting sections (35) are provided with second connecting holes; The second semi-ring frame (33) includes a second semi-ring section (36) and two second connecting sections (37) located at both ends of the second semi-ring section (36), and the two second connecting sections (37) are provided with threaded holes; Two semi-ring frames are joined together to form a ring and are fitted onto the electric hammer (3). The first connecting section (35) and the second connecting section (37) are joined together. The second connecting hole and the threaded hole are connected. The second connecting hole is threaded through the bolt and connected to the bolt hole. After the first connecting section (35) and the second connecting section (37) are joined together, a guide groove (38) is formed. The guide groove (38) and the U-shaped frame (11) are slidably connected.

8. The disassembly device for the hydraulic coupling as described in claim 1, characterized in that, The top pressure assembly includes a top pressure head (41) and a connector (42); The drive end of the electric hammer (3) is connected to the top pressure head (41) via a connector (42), and the top pressure head (41) abuts against the support frame (1).

9. The disassembly device for the hydraulic coupling as described in claim 7, characterized in that, The top pressure head (41) includes an integrally formed top pressure section (411) and a sleeve section (412). The top pressure section (411) has a connecting groove that abuts against the support frame (1); The sleeve section (412) has a square hole for the connector (42) to be inserted.

10. A disassembly device for a hydraulic coupling as described in claim 9, characterized in that, The connector (42) includes an integrally formed square handle section (421) and a square section (422). The square handle section (421) is inserted into the drive end of the electric hammer (3), and the square section (422) is inserted into the square hole.

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