Hydraulic rotary motor auxiliary assembly tool capable of being rapidly assembled

Abstract

The hydraulic rotary motor auxiliary assembly tool comprises a main body bearing flange plate, the lower end of the main body bearing flange plate is fixedly connected with a bottom positioning assembly, and the upper end of the main body bearing flange plate is detachably connected with a blade guiding and inserting assembly used for assisting a blade to be accurately embedded into a rotor blade groove. The upper end face of the main body bearing flange plate is provided with a modular installation sinking groove matched with the blade guiding and inserting assembly. The precise guide sleeve is detachably connected with the modular mounting sinking groove through a positioning pin, the blade positioning and inserting groove is formed in one end of the outer side of the precise guide sleeve and correspondingly matched with a rotor blade groove in position, and the width and the depth of the blade positioning and inserting groove are precisely matched with the boundary dimension of a blade to be assembled; the bottom positioning assembly comprises a core positioning base which is integrally formed and fixed to the lower end of the main body bearing flange plate. The method has the advantage of accurately positioning and assembling the blade, and the mounting efficiency of the blade is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic rotary motor auxiliary assembly tooling technology, specifically to a hydraulic rotary motor auxiliary assembly tooling that enables rapid assembly. Background Technology

[0002] Traditional hydraulic rotary motor auxiliary assembly fixtures are simple sets of auxiliary tools used to assist in the assembly of hydraulic rotary motor parts. They lack standardized and modular design, and their core functions revolve around providing simple support for basic processes such as blade insertion and rotor positioning. They have low technical barriers and rudimentary structures, and are mostly designed or customized by enterprises on a temporary basis according to their own production lines, without forming a universal and precise structural system.

[0003] In traditional hydraulic rotary motor auxiliary assembly fixtures, blade insertion lacks a dedicated guide channel, requiring manual alignment of each blade into the rotor blade slots—a cumbersome and time-consuming process. Furthermore, blade insertion is prone to jamming, necessitating additional tapping for assistance, increasing labor intensity and potentially damaging blade edges and seals. Repeated rotor adjustments during blade assembly result in a single motor blade assembly time 2-3 times longer than with newer fixtures, significantly reducing production line efficiency. Traditional fixtures rely on simple support structures for rotor positioning, resulting in insufficient axial and radial positioning accuracy. Circumferential rotation often leads to coaxiality errors exceeding 0.1mm, causing blade insertion into the rotor slots to result in positional misalignment and angular distortion. This makes them unsuitable for assembling heavy-duty products requiring 4 tons statically and 2 tons dynamically. Additionally, traditional fixtures lack interference fits and anti-loosening locking designs for their positioning connectors, leading to loosening, shifting, and even accidental detachment of the insertion rod—a safety hazard that affects assembly accuracy and could cause damage to parts. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic rotary motor auxiliary assembly fixture that can be quickly assembled, which has the advantage of accurately positioning and assembling blades, and solves the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A quick-assembly hydraulic rotary motor auxiliary assembly fixture includes a main bearing flange, a bottom positioning component fixedly connected to the lower end of the main bearing flange, and a blade guide insertion component detachably connected to the upper end of the main bearing flange for assisting in the precise embedding of blades into rotor blade slots. The upper surface of the main bearing flange has a modular mounting slot adapted to the blade guide insertion component. The blade guide insertion component includes a precision guide sleeve detachably connected to the modular mounting slot via a positioning pin, and a blade positioning insertion slot located on one side of the precision guide sleeve and corresponding to the position of the rotor blade slot. The width and depth of the blade positioning insertion slot are precisely matched with the outer dimensions of the blade to be assembled, ensuring that the blade is inserted without offset or jamming.

[0006] Preferably, the bottom positioning component includes an integrally formed core positioning base fixed to the lower end of the main bearing flange, and anti-slip support grooves symmetrically opened on both sides of the core positioning base to improve the stability of the tooling placement. The inner wall of the anti-slip support groove is provided with anti-slip texture, and the depth of the anti-slip support groove is adapted to the core positioning base, which can effectively increase the contact friction between the two, prevent the tooling from horizontal displacement and circumferential deflection during blade pressing and rotor circumferential rotation, and ensure assembly accuracy.

[0007] It is worth noting that the core positioning base has high structural strength and stable positioning accuracy, and can provide a core support benchmark for the tooling; however, it is necessary to ensure that it is precisely integrally formed with the main bearing flange of the core positioning base to avoid positioning failure due to welding or assembly deviations.

[0008] Preferably, the core positioning base has symmetrical through holes on both sides, and the inner wall of the through holes is treated with honing process to ensure the accuracy of the hole diameter and cylindricity.

[0009] It is worth noting that the axial positioning through holes are symmetrically opened and, with the honing process, the hole diameter accuracy and cylindricity are high, which can provide a precise assembly benchmark for the lateral positioning insert. However, it is necessary to clean the impurities inside the axial positioning through holes after honing to avoid affecting the assembly accuracy of the insert.

[0010] Preferably, a central positioning slot is provided at the center of the main bearing flange, and a rotor centering groove adapted to the lower end shaft head of the rotor is provided at the center of the core positioning base. The inner diameter of the rotor centering groove is precisely matched with the outer diameter of the rotor, which can perform axial positioning and radial limiting of the rotor, ensuring that the coaxiality of the rotor is consistent when it rotates and avoiding deviation in the blade insertion position.

[0011] It is worth noting that the rotor centering insert is precisely matched with the lower end of the rotor shaft, and the inner diameter is precisely matched with the outer diameter of the rotor, which can realize the rotor's axial positioning and radial dual limiting. However, it should be noted that the rotor centering insert is precisely machined according to the rotor specifications, and the core positioning base of the corresponding specifications needs to be replaced when adapting to different rotors.

[0012] Preferably, the precision guide sleeve has a rotor rotation cavity inside, which is designed to cooperate with the rotor's circumferential rotation to complete the precise assembly of the blades one by one. The inner wall of the rotor rotation cavity is smooth and burr-free, which can allow the rotor to rotate smoothly 360°, and at the same time provide a space for the initial positioning of the blades after insertion.

[0013] It is worth noting that the inner wall of the rotor rotation cavity is smooth and burr-free, which can allow the rotor to rotate smoothly 360°, and at the same time provide sufficient space for the initial positioning of the blade after insertion; however, it should be noted that the inner wall of the rotor rotation cavity 303 needs to be polished regularly to prevent burrs from scratching the rotor or blade.

[0014] Preferably, the outer side of the core positioning base is detachably connected to a fixed bearing base for supporting the entire tooling. The fixed bearing base has corresponding positioning through holes on both sides that are coaxially aligned with the axial positioning through holes. The bottom of the fixed bearing base is fixedly fitted with a high-elasticity wear-resistant and anti-slip pad, which can further improve the stability and shock resistance of the overall tooling placement and is suitable for the blade assembly requirements of hydraulic rotary motors with static load of 4 tons and dynamic load of 2 tons.

[0015] It is worth noting that the coaxial alignment of the corresponding positioning through hole and the axial positioning through hole ensures smooth insertion of the lateral positioning rod and achieves accurate positioning; however, it is necessary to ensure that the position of the corresponding positioning through hole is precisely machined and that the coaxiality error is controlled within the allowable range.

[0016] Preferably, a transverse positioning rod is detachably connected to the outer side of the axial positioning through hole and the corresponding positioning through hole. The diameter of the axial positioning through hole and the outer diameter of the transverse positioning rod are interference-fitted to ensure that the transverse positioning rod does not loosen or move after insertion, thus achieving a rigid and secure connection between the transverse positioning rod and the fixed bearing base. One end of the transverse positioning rod is integrally formed with an anti-disengagement limiting block, and the other end is locked and fixed through a threaded connection or elastic buckle structure. This can effectively prevent the pin from accidentally falling off during assembly, ensuring the reliability of the tooling fixation, and at the same time, it facilitates the subsequent quick disassembly and separation of the core positioning base and the fixed bearing base, improving work efficiency.

[0017] It is worth noting that the lateral positioning rod and the axial positioning through hole are interference fit, so there is no loosening or movement after insertion. The anti-dislodgement limit block at one end and the locking structure at the other end provide double protection, ensuring high fixation reliability. However, it is necessary to ensure that the material of the lateral positioning rod has high strength to avoid bending and deformation under heavy load.

[0018] Preferably, the upper end face of the precision guide sleeve is integrally formed with a stator positioning step. The outer diameter of the stator positioning step is adapted to the inner diameter of the stator, and the end face of the step is machined by a surface grinder to ensure flatness. This enables the stator to be quickly and accurately positioned on the precision guide sleeve, which facilitates the subsequent assembly of the rotor, blades and stator.

[0019] It is worth noting that the stator positioning step is integrally formed on the upper end face of the precision guide sleeve. After being processed by a surface grinder, it has high flatness and its outer diameter is precisely matched with the inner diameter of the stator. However, it should be noted that the size of the stator positioning step needs to be processed according to the stator specifications. When adapting to different stators, the corresponding precision guide sleeve needs to be replaced.

[0020] Preferably, a high-elasticity buffer pad is fixedly embedded at the bottom of the rotor centering groove. The high-elasticity buffer pad is integrally molded from polyurethane material, with uniform thickness and excellent compressive resilience. It can effectively avoid the impact damage caused by hard contact between the shaft head and the bottom of the groove when the rotor is inserted. At the same time, the axial position of the rotor can be finely adjusted by elastic deformation, further improving the rotor positioning accuracy and assembly consistency.

[0021] It is worth noting that the high-elasticity buffer pad is made of polyurethane material in one piece, with uniform thickness and excellent compression resistance and resilience, which can effectively buffer impact force; however, it is important to note that the high-elasticity buffer pad should be made of polyurethane material that is suitable for the working conditions to avoid aging and failure under high temperature or heavy load.

[0022] Preferably, the wall of the blade positioning insertion slot is treated with a hard alloy coating to reduce wear and extend the service life of the tooling; the entrance of the blade positioning insertion slot is provided with a gradient guide chamfer, the chamfer angle is controlled between 15° and 30°, and the chamfer slope is treated with a rounded transition, which can guide the blade to be quickly and accurately inserted into the slot, greatly reducing the difficulty of manual assembly, improving the blade insertion efficiency, and effectively avoiding scratches on the blade edge and sealing surface by the chamfer edge, ensuring the sealing performance after blade assembly.

[0023] It is worth noting that the hard alloy coating on the blade positioning insertion slot has strong wear resistance, extends the service life of the tooling, and ensures a precise match between the slot and the blade shape. However, it is important to note that the coating on the blade positioning insertion slot needs to be checked regularly, and the coating should be re-plated promptly if it wears down and exposes the bottom.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, the bottom positioning component is fixedly connected to the main bearing flange, and the positioning reference is stable, which can realize the precise axial and radial limit of the rotor, and prevent the rotor from being displaced or deflected during blade insertion and circumferential rotation, thus providing a stable operating reference for inserting the blade into the rotor blade slot. The blade guide insert assembly adopts a detachable design, and with the modular installation slot and positioning pin, it can quickly achieve precise docking and disassembly with the main bearing flange. It is convenient to flexibly replace the appropriate parts according to different blade and rotor specifications without replacing the entire tooling. This greatly improves the tooling versatility and equipment utilization, reduces the production cost of adapting to different product specifications, and shortens the tooling debugging and maintenance time. As the core carrier of the blade guide insertion assembly, the precision guide sleeve not only ensures the smooth 360° rotation of the rotor and provides ample space for the assembly of blades one by one, but also has blade positioning insertion slots on its outer side. The slot width and depth are precisely matched with the outer dimensions of the blade to be assembled, and correspond to the position of the rotor blade slot. This can form an all-round guiding constraint on the blade and directly guide the blade to align with the rotor blade slot without the need for repeated manual calibration. The structural design of the blade positioning insertion slot, combined with the precision guide sleeve, significantly reduces the difficulty of manual assembly and operational errors. It avoids offset and jamming during blade insertion, prevents scratches on the blade edges and rotor blade groove sealing surfaces, ensures the sealing performance and service life of the parts, and greatly improves blade assembly efficiency, shortens the assembly time of a single product, reduces individual product assembly differences, and enhances the working stability of the hydraulic rotary motor. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the core positioning base of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the precision guide sleeve of the present invention; Figure 4 This is a three-dimensional structural diagram of the rotor centering insert groove of the present invention; Figure 5 This is a three-dimensional structural diagram of the fixed support base of the present invention; Figure 6 This is a schematic diagram of the combined installation structure of the fixed bearing base and the core positioning base of the present invention.

[0026] Reference numerals: 1. Main bearing flange; 4. Fixed bearing base; 101. Modular installation groove; 102. Central positioning slot; 201. Core positioning base; 202. Anti-slip support groove; 203. Axial positioning through hole; 204. Rotor centering insert groove; 301. Precision guide sleeve; 302. Blade positioning insert groove; 303. Rotor rotation cavity; 401. Corresponding positioning through hole; 402. Lateral positioning insert rod. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0029] Example 1; as Figures 1-4 As shown, it includes a main bearing flange 1, which is made of 40Cr alloy steel after quenching and tempering. A bottom positioning assembly is fixedly connected to the lower end of the main bearing flange 1, and a blade guide insertion assembly for assisting the precise embedding of blades into the rotor blade slots is detachably connected to the upper end of the main bearing flange 1. A modular mounting slot 101 adapted to the blade guide insertion assembly is opened on the upper surface of the main bearing flange 1. The blade guide insertion assembly includes a precision guide sleeve 301 detachably connected to the modular mounting slot 101 by a positioning pin, and a blade guide insertion assembly located on the outer end of the precision guide sleeve 301 and aligned with the rotor blade slot. The blade positioning insertion slot 302 should be adapted, and the width and depth of the blade positioning insertion slot 302 should be precisely matched with the outer dimensions of the blade to be assembled to ensure that there is no offset or jamming when the blade is inserted. The precision guide sleeve 301 has a rotor rotation cavity 303 inside, which cooperates with the rotor to complete the precise assembly of the blades one by one. The inner wall of the rotor rotation cavity 303 is smooth and burr-free, which can meet the smooth 360° rotation of the rotor, and at the same time provide a space for the initial positioning of the blade after insertion. The precision guide sleeve 301 is made of 40Cr alloy steel after quenching and tempering; the inner wall of the rotor rotation cavity 303 is polished to Ra≤0.8μm. The bottom positioning assembly includes a core positioning base 201 integrally formed and fixed to the lower end of the main bearing flange 1, and anti-slip support grooves 202 symmetrically opened on both sides of the core positioning base 201 to improve the stability of the tooling placement. The core positioning base 201 is also made of 40Cr alloy steel. The inner wall of the anti-slip support grooves 202 is provided with anti-slip texture, and the depth of the anti-slip support grooves 202 is adapted to the core positioning base 201, which can effectively increase the contact friction between the two, prevent the tooling from horizontal displacement and circumferential deflection during blade pressing and rotor circumferential rotation, and ensure assembly accuracy. Axial positioning through holes 203 are symmetrically opened on both sides of the core positioning base 201. The inner wall of the axial positioning through holes 203 is treated with honing process to ensure the accuracy of hole diameter and cylindricity. A central opening is provided inside the main bearing flange 1. The central positioning slot 102 and the core positioning base 201 have a rotor centering groove 204 at their center, which is adapted to the lower end of the rotor shaft. The inner diameter of the rotor centering groove 204 is precisely matched with the outer diameter of the rotor, which can perform axial positioning and radial limiting of the rotor, ensuring consistent coaxiality when the rotor rotates and avoiding deviation in the blade insertion position. A high-elasticity buffer pad is fixedly embedded at the bottom of the rotor centering groove 204. The high-elasticity buffer pad is integrally molded with polyurethane material, with uniform thickness and excellent compressive resilience. It can effectively avoid the impact damage caused by hard contact between the shaft and the bottom of the groove when the rotor is inserted. At the same time, the axial position of the rotor can be finely adjusted by elastic deformation, further improving the rotor positioning accuracy and assembly consistency. The rotor centering groove 204 is integrally molded with polyurethane material PU-85A, with a thickness of 5mm and a Shore hardness of 85A. The wall of the blade positioning insertion slot 302 is treated with a hard alloy coating to reduce wear and extend the service life of the tooling. The entrance of the blade positioning insertion slot 302 is provided with a gradient guide chamfer, the chamfer angle is controlled between 15° and 30°, and the chamfer slope is treated with a rounded transition, which can guide the blade to be quickly and accurately inserted into the slot, greatly reducing the difficulty of manual assembly and improving the blade insertion efficiency. At the same time, it effectively avoids the chamfer edge from scratching the blade edge and sealing surface, ensuring the sealing performance after blade assembly. The chamfer slope is treated with a rounded transition with a radius of 2mm.

[0030] When working, the integral molding structure of the main bearing flange 1 and the core positioning base 201 is first used to ensure the coaxiality and positioning accuracy of the two from the source, so as to avoid deviations in subsequent assembly. The operator slowly inserts the lower end shaft of the hydraulic rotary motor rotor into the rotor centering groove 204. By utilizing the precise fit between the inner diameter of the rotor centering groove 204 and the outer diameter of the rotor (H7 / f6), the axial positioning and radial rigid limit of the rotor are achieved, preventing the rotor from shifting or deviating during assembly. Meanwhile, the high-elasticity buffer pad at the bottom of the rotor centering groove 204 absorbs the impact force when the rotor is inserted through its own elastic deformation, effectively avoiding the impact damage caused by hard contact between the rotor shaft head and the bottom of the groove. It can also finely adjust the axial position of the rotor according to the actual size of the rotor shaft head, further improving the rotor positioning accuracy. The operator then holds the blade and aligns it with the blade positioning insertion slot 302. Under the guidance of the guide chamfer, the blade will slide precisely into the rotor blade slot along the trajectory of the insertion slot. Because the width and depth of the blade positioning insertion slot 302 are precisely matched with the outer dimensions of the blade to be assembled at the micron level, it can form an all-round guiding constraint on the blade, completely eliminating the phenomenon of offset, tilting or jamming when the blade is inserted. Once a blade is assembled, the operator gently pushes the rotor, which will rotate smoothly 360° without obstruction within the rotor rotation cavity 303. After the next rotor blade slot is precisely aligned with the blade positioning insertion slot 302, the blade insertion action is repeated until all blades are assembled one by one. Throughout the assembly process, the anti-slip support grooves 202 on both sides of the core positioning base 201 will increase the contact friction with the placement surface through the diamond-shaped anti-slip texture on the inner wall, effectively preventing the tooling from horizontal displacement or circumferential deflection during blade pressing and rotor rotation, providing a stable and reliable operating benchmark for the precise assembly of the blades, and ensuring that the assembly position accuracy of each blade meets the design requirements.

[0031] Example 2: Please refer to Figure 1 - Figure 6 Based on Embodiment 1, a fixed bearing base 4, a corresponding positioning through hole 401, a transverse positioning rod 402, and a stator positioning step are added to further enhance the stability of the tooling and the ability to connect processes. The core positioning base 201 is detachably connected to a fixed bearing base 4 for supporting the entire tooling. The fixed bearing base 4 is welded from Q235B steel plate. The fixed bearing base 4 has corresponding positioning through holes 401 on both sides that are coaxially aligned with the axial positioning through hole 203. A high-elasticity wear-resistant and anti-slip pad is fixedly attached to the bottom of the fixed bearing base 4. The pad is made of nitrile rubber (NBR) with a Shore hardness of 60-70A, which can further improve the stability and shock resistance of the overall placement of the tooling and is suitable for the blade assembly requirements of hydraulic rotary motors with a static load of 4 tons and a dynamic load of 2 tons. A transverse positioning rod 402 is detachably connected to the outer side of the axial positioning through hole 203 and the corresponding positioning through hole 401. The transverse positioning rod 402 is made of 304 stainless steel. The diameter of the axial positioning through hole 203 and the outer diameter of the transverse positioning rod 402 are interference-fitted to ensure that the transverse positioning rod 402 does not loosen or move after insertion, thus achieving a rigid and secure connection between the transverse positioning rod 402 and the fixed bearing base 4. One end of the transverse positioning rod 402 is integrally formed with an anti-dislodgement limit block, and the other end is locked and fixed by a threaded connection or elastic buckle structure. This can effectively prevent the pin from accidentally falling off during assembly, ensuring the reliability of the tooling fixation, and at the same time, it facilitates the subsequent quick disassembly and separation of the core positioning base 201 and the fixed bearing base 4, improving work efficiency. The upper end face of the precision guide sleeve 301 is integrally formed with a stator positioning step. The outer diameter of the stator positioning step is adapted to the inner diameter of the stator, and the end face of the step is machined by a surface grinder to ensure flatness. This enables the stator to be quickly and accurately positioned on the precision guide sleeve 301, which facilitates the subsequent assembly of the rotor, blades and stator. The end face of the stator positioning step is machined by a surface grinder, and the flatness is ≤0.02mm. The outer diameter of the step and the inner diameter of the stator adopt an H8 / f7 transition fit design to ensure that the stator can be accurately positioned.

[0032] When working, the tooling is first assembled and fixed: the operator slowly inserts the core positioning base 201 into the corresponding installation position of the fixed bearing base 4, and ensures that the axial positioning through holes 203 on both sides of the core positioning base 201 are precisely coaxially aligned with the corresponding positioning through holes 401 of the fixed bearing base 4 by visual alignment or special positioning tools. Then, holding the transverse positioning rod 402, insert it into the corresponding positioning through hole 401 on one side, pass through the axial positioning through hole 203 in sequence, and then exit from the corresponding positioning through hole 401 on the other side. The interference fit relationship makes the transverse positioning rod 402 fit tightly with the through hole. After insertion, there is no looseness or movement. Then, put the flat washer on the threaded end of the transverse positioning rod 402 and tighten the lock nut to achieve a rigid connection between the core positioning base 201 and the fixed bearing base 4. The anti-disengagement limit block can effectively prevent the transverse positioning rod 402 from accidentally falling off during the assembly process and ensure the reliability of the tooling fixation. The high-elasticity, wear-resistant, and anti-slip pad at the bottom of the fixed bearing base 4 will further increase the contact friction between the tooling and the ground, while absorbing the vibration generated during the assembly process, improving the overall stability and shock resistance of the tooling, so that the tooling can easily adapt to the blade assembly requirements of hydraulic rotary motors with static load of 4 tons and dynamic load of 2 tons. The blade assembly process is consistent with that of Example 1. After all blades are assembled, the operator will put the stator into the upper end of the precision guide sleeve 301. Utilizing the precise positioning effect of the stator positioning step, the stator will quickly achieve coaxial alignment with the precision guide sleeve 301 without the need for additional calibration time, which greatly shortens the stator positioning time. The operator then holds the connection between the rotor and the stator with both hands and slowly pulls the assembly consisting of the rotor, blades and stator from the main bearing flange 1. Then, the precision guide sleeve 301 is removed from the lower end, and finally the stator is gently pressed down to make the stator, rotor and blades fit together tightly. This completes the assembly process of the core components of the hydraulic rotary motor, achieving a seamless connection between "blade assembly and stator assembly", which significantly improves the overall assembly efficiency.

[0033] Example 3: Please refer to Figure 1 - Figure 6 Based on Example 2, an intelligent monitoring module and a quick-change structure were added to improve the intelligence level and versatility of the tooling. The intelligent monitoring module includes a displacement sensor, a pressure sensor, and a data display terminal. The displacement sensor is a KT-200 laser displacement sensor with a measurement range of 0-50mm and a measurement accuracy of ±0.01mm. It is fixedly installed on the outside of the core positioning base 201 by a bracket, with the sensor probe aligned with the upper surface of the fixed bearing base 4. It is used to monitor the assembly gap between the core positioning base 201 and the fixed bearing base 4 in real time. The pressure sensor is a PT124G-111 miniature pressure sensor with a measurement range of 0-100N and an accuracy of ±0.5%FS. It is embedded in the bottom of the blade positioning insertion slot 302, with the sensor sensing surface flush with the inner wall of the insertion slot. It is used to detect the contact pressure when the blade is inserted. The data display terminal uses an industrial-grade touch screen with a resolution of 800×480. It is connected to the displacement sensor and pressure sensor via wires and installed on the side of the fixed support base 4. It can display data such as assembly gap and insertion pressure in real time, and set alarm thresholds, i.e., when the assembly gap exceeds 0.02mm or the insertion pressure exceeds 80N, an alarm will be triggered. The quick-change structure includes a replaceable blade positioning insert module and a quick-release structure for positioning pins. The replaceable blade positioning insert module is detachably connected to the precision guide sleeve 301 via four hexagon socket bolts. The size of the blade positioning insert slot 302 on the module can be customized according to different blade specifications. The quick-release structure for positioning pins uses elastic cylindrical pins, model GB / T879.2-2017, which, together with quick-release buckles, enable quick assembly and disassembly of the precision guide sleeve 301 and the modular installation slot 101. At the same time, the locking structure of the transverse positioning insert rod 402 is optimized by adding an elastic buckle made of 65Mn spring steel to the threaded connection, forming a double locking protection.

[0034] During the tooling assembly stage, the displacement sensor monitors the assembly gap data between the core positioning base 201 and the fixed bearing base 4 in real time and transmits it to the data display terminal. The operator can view the gap value intuitively on the display screen. If the gap exceeds the alarm threshold, the installation position of the core positioning base 201 needs to be readjusted to ensure the tooling assembly accuracy. During the blade assembly stage, when the blade is inserted into the blade positioning insertion slot 302, the pressure sensor will detect the contact pressure between the blade and the bottom of the slot in real time, and the data will be displayed on the terminal. If the pressure exceeds the set threshold, the display screen will issue an audible and visual alarm to remind the operator to check whether there are impurities stuck in the blade or insertion slot, so as to avoid damage to the blade or rotor caused by forced insertion. When it is necessary to assemble hydraulic rotary motor blades of different specifications, the operator can loosen the positioning pin by using the quick-release buckle, unscrew the hex bolt, remove the original blade positioning insert module, replace it with a module of the corresponding size, and then fix it with the positioning pin and bolt. The whole replacement process only takes 5-8 minutes, without the need to replace the entire tooling, which greatly improves the versatility and adaptability of the tooling. The double locking structure of the transverse positioning rod 402 can further improve the connection reliability between the core positioning base 201 and the fixed bearing base 4. Even in long-term high-frequency assembly operations, it can effectively prevent the transverse positioning rod 402 from loosening. At the same time, the elastic buckle design facilitates quick disassembly and separation, improving the maintenance efficiency of the tooling. This embodiment achieves real-time monitoring and early warning of the assembly process through an intelligent monitoring module, effectively reducing the defect rate. By quickly changing the structure, it broadens the applicability of tooling, meets the assembly requirements of hydraulic rotary motors of different specifications, and further improves the automation level and production efficiency of the production line.

[0035] Example 4: Please refer to Figure 1 - Figure 6 Based on Example 3, a pneumatic auxiliary assembly mechanism and a dustproof protection structure are added to reduce the intensity of manual labor and extend the service life of the tooling; The pneumatic auxiliary assembly mechanism includes a small air compressor, a pneumatic actuator, a solenoid valve, and a foot switch. The air compressor is a small, quiet model with a displacement of 0.12m³. 3 / min, working pressure 0.6-0.8MPa, the pneumatic push rod is a mini cylinder, model TN20×30-S, cylinder diameter 20mm, stroke 30mm, mounted on the outside of precision guide sleeve 301 by bracket, the push rod head is equipped with a rubber pressure head, hardness 60A, aligned with the outlet end of blade positioning insertion slot 302; The solenoid valve is a two-position five-way type, model 4V210-08. It is connected to the air compressor and the pneumatic push rod through the air pipe. The foot switch is electrically connected to the solenoid valve and is used to control the extension and retraction of the pneumatic push rod. The dustproof protection structure includes a dust cover, a dust guide groove, and a sealing ring. The dust cover is made of transparent PC material and is hinged to the upper end face of the precision guide sleeve 301 via a hinge. It can be flipped open and closed, and the inner wall of the dust cover is covered with a dustproof felt. The dust guide groove is located on the outer wall of the precision guide sleeve 301 and is distributed below the blade positioning insertion groove 302. The groove is 10mm wide and 5mm deep, and a dust collection box with a capacity of 50mL is provided at the end. The sealing ring is a fluororubber O-ring, model AS568-214, which is installed on the mating surface of the modular installation groove 101 and the precision guide sleeve 301, and on the mating surface of the core positioning base 201 and the fixed bearing base 4 to achieve a sealed dustproof effect.

[0036] When working, the operator first opens the dust cover, and after the rotor is installed and positioned, closes the dust cover. Through the synergistic effect of the sealing ring and the dust cover, external dust and impurities are effectively blocked from entering the rotor rotation cavity 303 and the blade assembly area, so as to avoid impurities affecting the assembly accuracy or causing wear on parts. During blade assembly, the operator places the blade into the blade positioning insertion slot 302, then presses the foot switch. The solenoid valve controls the pneumatic push rod to extend, and the blade is gently pushed into the rotor blade slot through the rubber pressure head. No manual force is required, which greatly reduces the intensity of manual labor. At the same time, the thrust of the pneumatic push rod can be adjusted by the pressure regulating valve of the air compressor. The thrust can be set to 30-50N to avoid damage to the blade due to excessive thrust. After the blade is inserted, releasing the foot switch will automatically reset the pneumatic push rod, and the operator can then rotate the rotor to assemble the next blade. The entire process is more automated and the assembly efficiency is further improved. During long-term use, a small amount of dust that enters the tooling will fall into the dust guide groove and eventually collect in the dust collection box. Operators can disassemble the dust collection box regularly for cleaning, which effectively reduces the wear of dust on key parts of the tooling. The transparent dust cover design allows operators to observe the assembly process in real time and promptly detect and handle assembly abnormalities. This embodiment reduces the intensity of manual labor through a pneumatically assisted assembly mechanism, improves the consistency and stability of assembly actions, reduces the damage of dust and impurities to tooling and parts through a dustproof protection structure, extends the service life of tooling, reduces equipment maintenance costs, and is more suitable for large-volume, long-term continuous production operations.

[0037] The above working principle can be summarized as follows: The quick-assembly hydraulic rotary motor auxiliary assembly fixture of the present invention takes the main bearing flange 1 as the core bearing base, realizes the precise positioning of the rotor and the stable placement of the fixture through the bottom positioning component, and provides precise guidance for blade assembly with the help of the blade guide insertion component. All components work together to complete the efficient and precise assembly of the blade. Its core working logic is as follows: First, the axial positioning and radial limiting of the rotor are achieved through the core positioning base 201, rotor centering groove 204 and other structures to ensure that the coaxiality of the rotor is consistent when it rotates. Furthermore, by utilizing the precise guiding and constraining effect of the blade positioning insertion slot 302, the blade is accurately embedded into the rotor blade slot, avoiding offset and jamming. The overall stability of the tooling is enhanced by structures such as the fixed bearing base 4 and the transverse positioning rod 402, making it suitable for heavy-duty assembly requirements. By using stator positioning steps, the process connection between blade assembly and stator assembly is achieved, thereby improving overall assembly efficiency; Further improvements will be made by adding intelligent monitoring, quick replacement, pneumatic assistance, and dust protection structures to make the assembly process more intelligent, standardized, labor-saving, and sustainable.

[0038] Based on the stable assembly structure of Embodiment 2 and the pneumatic-assisted + dustproof protection structure of Embodiment 4, another embodiment can be designed to strengthen the tooling for large hydraulic rotary motors, i.e., those with static loads exceeding 4 tons. The main bearing flange 1 and the core positioning base 201 are made of 42CrMo alloy steel and are subjected to overall quenching treatment to improve the bearing strength. The fixed bearing base 4 is made of cast iron HT250, with cross-shaped reinforcing ribs added inside and shock-absorbing pads installed at the bottom. The blade positioning insertion slots 302 adopt a multi-group parallel design, which, together with multi-station pneumatic push rods, enables the simultaneous assembly of multiple blades. At the same time, the size of the rotor rotation cavity 303 is increased to adapt to the installation and rotation of large rotors, meet the assembly requirements of hydraulic rotary motors of different specifications and load levels, and further broaden the application scenarios of the tooling.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic rotary motor auxiliary assembly fixture that can be quickly assembled, characterized in that, The main bearing flange (1) is fixedly connected to the bottom positioning component at the lower end of the main bearing flange (1). The blade guide insertion component for assisting the blade to be accurately embedded in the rotor blade slot is detachably connected to the upper end of the main bearing flange (1). A modular installation slot (101) adapted to the blade guide insertion component is opened on the upper surface of the main bearing flange (1). The blade guide insertion component includes a precision guide sleeve (301) detachably connected to the modular installation slot (101) through a positioning pin, and a blade positioning insertion slot (302) opened on one side of the precision guide sleeve (301) and adapted to the position of the rotor blade slot. The width and depth of the blade positioning insertion slot (302) are precisely matched with the outer dimensions of the blade to be assembled, ensuring that there is no offset or jamming when the blade is inserted.

2. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 1, characterized in that, The bottom positioning assembly includes a core positioning base (201) integrally formed and fixed to the lower end of the main bearing flange (1), and anti-slip support grooves (202) symmetrically opened on both sides of the core positioning base (201) to improve the stability of tooling placement. The inner wall of the anti-slip support groove (202) is provided with anti-slip texture, and the depth of the anti-slip support groove (202) is adapted to the core positioning base (201), which can effectively increase the contact friction between the two, prevent the tooling from horizontal displacement and circumferential deflection during blade pressing and rotor circumferential rotation, and ensure assembly accuracy.

3. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 2, characterized in that, The core positioning base (201) has symmetrical through holes (203) on both sides. The inner wall of the axial positioning through hole (203) is treated with honing process to ensure the accuracy of hole diameter and cylindricity.

4. The hydraulic rotary motor auxiliary assembly fixture that can be quickly assembled according to claim 3, characterized in that, The main bearing flange (1) has a central positioning slot (102) at its center, and the core positioning base (201) has a rotor centering groove (204) at its center that is adapted to the lower end of the rotor shaft. The inner diameter of the rotor centering groove (204) is precisely matched with the outer diameter of the rotor, which can axially position and radially limit the rotor, ensuring that the rotor is coaxial when rotating and avoiding deviation in the blade insertion position.

5. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 1, characterized in that, The precision guide sleeve (301) has a rotor rotation cavity (303) inside, which is designed to cooperate with the rotor to complete the precise assembly of the blades one by one by rotating in the circumferential direction. The inner wall of the rotor rotation cavity (303) is smooth and burr-free, which can satisfy the smooth rotation of the rotor (360)°, and at the same time provide a space for the initial positioning of the blades after insertion.

6. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 3, characterized in that, The core positioning base (201) is detachably connected to a fixed bearing base (4) for supporting the entire tooling. The fixed bearing base (4) has corresponding positioning through holes (401) on both sides that are coaxially aligned with the axial positioning through hole (203). The bottom of the fixed bearing base (4) is fixedly fitted with a high elastic wear-resistant anti-slip pad, which can further improve the stability and shock resistance of the tooling and adapt to the blade assembly requirements of hydraulic rotary motors with static load of 4 tons and dynamic load of 2 tons.

7. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 6, characterized in that, A transverse positioning rod (402) is detachably connected to the outer side of the axial positioning through hole (203) and the corresponding positioning through hole (401). The diameter of the axial positioning through hole (203) is interference-fitted with the outer diameter of the transverse positioning rod (402) to ensure that the transverse positioning rod (402) does not loosen or move after insertion, thus achieving a rigid connection between the transverse positioning rod (402) and the fixed bearing base (4). One end of the transverse positioning rod (402) is integrally formed with an anti-dislodgement limit block, and the other end is locked and fixed by a threaded connection or elastic buckle structure. This can effectively prevent the pin from accidentally falling off during assembly, ensuring the reliability of the tooling fixation, and at the same time, it is convenient to quickly disassemble and separate the core positioning base (201) and the fixed bearing base (4) to improve work efficiency.

8. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 5, characterized in that, The upper end face of the precision guide sleeve (301) is integrally formed with a stator positioning step. The outer diameter of the stator positioning step is adapted to the inner diameter of the stator, and the end face of the step is machined by a surface grinder to ensure flatness. This enables the stator to be quickly and accurately positioned on the precision guide sleeve (301), which facilitates the subsequent assembly of the rotor, blades and stator.

9. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 4, characterized in that, The rotor centering groove (204) is fixedly fitted with a high elastic buffer pad at the bottom. The high elastic buffer pad is made of polyurethane material in one piece. It has uniform thickness and excellent compressive resilience. It can effectively avoid the impact damage caused by hard contact between the shaft head and the bottom of the groove when the rotor is inserted. At the same time, the rotor axial position can be finely adjusted by elastic deformation, which can further improve the rotor positioning accuracy and assembly consistency.

10. The hydraulic rotary motor auxiliary assembly fixture for rapid assembly according to claim 1, characterized in that, The wall of the blade positioning insertion slot (302) is treated with hard alloy coating to reduce wear and extend the service life of the tooling. The entrance of the blade positioning insertion slot (302) is provided with a gradient guide chamfer. The chamfer angle is controlled between 15° and 30°, and the chamfer slope is treated with arc transition. This can guide the blade to be quickly and accurately inserted into the slot, greatly reducing the difficulty of manual assembly and improving the blade insertion efficiency. At the same time, it can effectively avoid the chamfer edge from scratching the blade edge and sealing surface, ensuring the sealing performance after blade assembly.

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