Modular self-correcting bearing seat synchronous shaft assembly and installation method

Abstract

This invention discloses a modular self-aligning bearing housing synchronous shaft assembly and its installation method, relating to the field of bearing housing structure technology. It includes a bearing housing, which has a prismatic structure and is provided in two sets; synchronous shaft assemblies, also provided in two sets, each equipped with a self-lubricating split bearing, the self-lubricating split bearings being installed within their respective bearing housings; a synchronous structure installed between the two sets of synchronous shaft assemblies; push rod assemblies and arc-shaped vibration damping rod assemblies installed within the bearing housings, the push rod assemblies and arc-shaped vibration damping rod assemblies being equally spaced along the axis of the self-lubricating split bearings; a support wheel assembly installed between the push rod assembly and the self-lubricating split bearings, and a buffer wheel assembly installed between the arc-shaped vibration damping rod assembly and the self-lubricating split bearings; the support wheel assembly and the buffer wheel assembly abut against the surface of the self-lubricating split bearings; an oil inlet is provided on the bearing housing, and lubrication ring grooves are provided on both the self-lubricating split bearings and the support wheel assembly, thus solving the technical problems of inconvenient alignment, installation and adjustment, and poor heat dissipation in the prior art.

Description

Technical Field

[0001] This invention relates to the field of bearing housing structure technology, and in particular to a modular self-correcting bearing housing synchronous shaft assembly and its installation method. Background Technology

[0002] Bearing housings are structures that support and secure bearings, and come in various types and applications, playing a crucial role in mechanical equipment. They are typically made of materials such as gray cast iron, ductile iron, cast steel, stainless steel, and plastics. Their primary function is to provide a stable support point, enabling the bearing to operate normally and withstand loads. The design and material selection of the bearing housing directly affect the machine's operating efficiency and service life.

[0003] There are many types of bearing housings, which can be mainly divided into the following categories: split vertical bearing housings, integral bearing housings, flanged bearing housings, and spherical roller bearing housings. When installing bearing housings, it is necessary to ensure a good fit between the housing and the shaft to avoid malfunctions caused by improper installation. Regular inspection and maintenance of the bearing housing and its internal bearings can effectively extend the service life of the equipment.

[0004] Design structural defects

[0005] 1. The contradiction between rigidity, strength, and lightweight: In order to ensure rigidity and reduce deformation, traditional bearing housings usually adopt a conservative thick-walled design, resulting in excessive weight and volume. In some transition areas (such as the connection between the stiffener and the housing body, and around the bolt holes), improper design can easily lead to stress concentration, which can become the source of fatigue cracks.

[0006] 2. Poor heat dissipation: Traditional enclosed or semi-enclosed structures mainly rely on natural convection heat dissipation from the metal surface. Under high-speed and heavy-load conditions, the heat generated by the bearing is difficult to dissipate in time, resulting in excessive temperature rise, accelerated aging of lubricating grease, and reduced bearing life.

[0007] 3. Limitations of Lubrication and Sealing: Low lubrication efficiency: Grease lubrication has a simple structure, but may suffer from uneven grease distribution and ineffective removal of old grease. Thin oil lubrication, on the other hand, has a complex structure, is prone to leakage, and has poor sealing reliability. Traditional felt rings and labyrinth seals have limited dust and water protection in harsh working conditions such as dusty, humid, or chemically corrosive environments, allowing contaminants to easily penetrate and damage the bearing.

[0008] 4. Inconvenient centering and installation adjustment: The installation and adjustment of most traditional bearing housings rely on the skills and experience of skilled workers, making it difficult to achieve fast and accurate installation. Minor deformations of the foundation or base plate will be directly transmitted to the bearing housing, affecting the concentricity of the shaft system.

[0009] There may also be deficiencies in materials and manufacturing processes, including limitations in material toughness, strength and wear resistance, and the release of internal stress in the cast blank over time or after processing, which may lead to deformation and affect long-term accuracy stability.

[0010] CN118499363A describes a dual-shaft integrated bearing housing, which uses two sets of bearing housings for installation; the focus is on the connection and lubrication method of the dual-shaft dual-bearing housing.

[0011] The existing CN223938487U describes a bearing housing and a bouncing screen. The bearing housing includes a bearing housing body and a protective cover disposed on the bearing housing body. The design focuses on the protective structure of the bearing.

[0012] The comparison has the following problems:

[0013] 1) The existing method of connecting the bearing housing to the shaft is inconvenient for alignment and installation adjustment;

[0014] 2) The heat dissipation performance is low due to the enclosed structure, resulting in low heat transfer efficiency;

[0015] 3) Uneven lubrication circuit exists.

[0016] Therefore, this application proposes a modular self-correcting bearing housing synchronous shaft assembly and its installation method. Summary of the Invention

[0017] To overcome the above shortcomings, the present invention provides a method for installing a large-span steel connecting corridor, which solves the technical problems of inconvenient alignment, installation and adjustment, and poor heat dissipation in the prior art.

[0018] To achieve the above objectives, the present invention adopts the following technical solution:

[0019] A modular self-aligning bearing housing synchronous shaft assembly includes:

[0020] The bearing bracket has a prism structure and is provided in two sets;

[0021] The synchronous shaft assembly is divided into two groups, and each group of synchronous shaft assemblies is equipped with a self-lubricating split bearing, which is installed in a corresponding bearing housing; it includes a synchronous structure, which is installed and connected between the two groups of synchronous shaft assemblies for synchronous rotation of the two groups of synchronous shaft assemblies.

[0022] Heavy-duty hard buffer spring seat assembly, installed at the bottom of the bearing bracket, is used to support the bearing bracket;

[0023] Push rod assemblies and arc-shaped vibration damping rod assemblies are installed inside the bearing housing. Multiple sets of push rod assemblies are arranged and distributed along the axis of the self-lubricating split bearing together with the arc-shaped vibration damping rod assemblies, and the included angles between adjacent assemblies are equal. A support wheel assembly is installed between the push rod assembly and the self-lubricating split bearing, and a buffer wheel assembly is installed between the arc-shaped vibration damping rod assembly and the self-lubricating split bearing. The support wheel assembly and the buffer wheel assembly abut against the surface of the self-lubricating split bearing.

[0024] An oil inlet is provided on the bearing bracket, and lubrication ring grooves are provided on both the self-lubricating split bearing and the support wheel assembly.

[0025] In a further technical solution, the bearing frame includes a frame base and an upper frame. The upper part of the frame base is provided with a lower notch, and the bottom of the upper frame is provided with an upper notch. The upper notch and the lower notch are paired to form an installation cavity. The self-lubricating split bearing is installed in the installation cavity and the outer diameter of the self-lubricating split bearing is smaller than the diameter of the installation cavity.

[0026] A self-preloaded spring bolt is installed between the frame base and the upper frame, and the self-preloaded spring bolt vertically connects the upper frame and the frame base;

[0027] The bottom of the rack base is provided with a mounting part, and the bottom of the mounting part is detachably connected to the heavy-duty hard buffer spring seat assembly.

[0028] In a further technical solution, the self-preloaded spring bolt includes an internal hexagon screw and a support ring, with the support ring fixedly installed on the head of the internal hexagon screw; an ultra-lightweight rectangular spring is fixedly installed between the end of the internal hexagon screw and the support ring, and the ultra-lightweight rectangular spring is set on the head of the internal hexagon screw.

[0029] In a further technical solution, the push rod assembly includes an intelligent internal thread servo motor, which has an internal thread and is threaded to a push rod; the push rod surface is provided with an external thread.

[0030] An ultra-lightweight rectangular spring II is fitted onto the push rod. A ball head is provided at the end of the push rod away from the intelligent internal thread servo motor. The inner diameter of the ultra-lightweight rectangular spring II is larger than the outer diameter of the push rod and smaller than the diameter of the ball head.

[0031] A stepped inner hole is provided on the frame base, and the push rod and the ultra-lightweight rectangular spring are constrained and installed in the stepped inner hole.

[0032] In a further technical solution, the arc-shaped vibration damping rod assembly includes an arc-shaped vibration damping rod and an ultra-lightweight rectangular spring. The arc-shaped vibration damping rod includes a crescent plate and a support rod. The ultra-lightweight rectangular spring is sleeved on the support rod and one end is fixedly connected to the crescent plate.

[0033] A stepped inner hole two is opened on the oil inlet channel, and the other end of the ultra-lightweight rectangular spring three is fixedly connected to the inner wall of the stepped inner hole two; the arc-shaped vibration damping rod assembly is constrained and installed in the stepped inner hole two.

[0034] In a further technical solution, the support wheel assembly includes a spindle, on which a pin sleeve is fixedly mounted. The axial cross section of the pin sleeve is cross-shaped. Position bearings are respectively mounted on both sides of the pin sleeve. An outer retaining ring is also installed between the position bearings and the pin sleeve along the axis of the spindle. A copper adjusting shim is installed on the other side of the corresponding position bearing for adjusting the clearance of the position bearings.

[0035] A support wheel body is fitted onto a pin sleeve. One side of the support wheel body is retracted at one end of the pin sleeve, and a retaining spring is installed on the other side to close it at the other end of the pin sleeve.

[0036] In a further technical solution, the buffer wheel assembly includes a second spindle and a second pin sleeve, with position bearings second mounted on both sides of the second pin sleeve; a buffer wheel body and a tire body are mounted on the outer end of the second position bearing, and the tire body is fixedly mounted on the outer side of the buffer wheel body.

[0037] In a further technical solution, the synchronous shaft assembly includes an intermediate shaft, on which a slot is cut and a self-lubricating split bearing is installed; the synchronous structure includes a herringbone tooth synchronous pulley.

[0038] A timing belt is installed between the two sets of herringbone tooth timing pulleys, and the inner side of the timing belt is provided with teeth that mesh with the corresponding herringbone tooth timing pulleys;

[0039] The two sets of intermediate shafts are parallel, and the two sets of bearing brackets are located on both sides of the synchronous belt.

[0040] In a further technical solution, the heavy-duty hard buffer spring seat assembly includes a fixed base, the middle of which protrudes upward and is fitted with a sliding sleeve; a heavy-duty rectangular spring is fitted on the outer side of the sliding sleeve, and the bottom end of the heavy-duty rectangular spring is fixedly connected to the fixed base; mounting holes are provided on both the sliding sleeve and the fixed base.

[0041] A method for installing a modular self-aligning bearing housing synchronous shaft assembly, comprising the bearing housing synchronous shaft assembly as described in claim 9, including the following steps:

[0042] Step 1, Pre-installation:

[0043] A. Separate the upper frame and the frame base; install the push rod assembly in the inner hole of the step inside the frame base; adjust the spindle of the support wheel assembly to extend out of both ends of the frame base, and test the push rod assembly's movement within its limit range to abut the support wheel body; pre-install the positioning pin inside the frame base;

[0044] B. Install the arc-shaped vibration damping rod assembly in the inner hole of the step inside the upper frame, weld the ultra-lightweight rectangular spring three to the step surface of the inner hole of the step and ensure that the axis is coaxial with the axis of the inner hole of the step;

[0045] C. Fix a self-lubricating split bearing and a herringbone toothed synchronous pulley to the intermediate shaft respectively;

[0046] Step 2: Secure the sliding sleeve to the bottom of the frame base with bolts to connect the frame base to the heavy-duty hard buffer spring seat assembly;

[0047] Step 3: Install the self-lubricating split bearing on the surface of the two sets of support wheel bodies. The lubrication ring groove is provided with a side groove and an annular groove. The side groove is opened on the self-lubricating split bearing, and the annular groove is opened on the surface of the support wheel body. The groove diameter of the annular groove is larger than the groove diameter of the side groove, and the side groove abuts against the annular groove.

[0048] Step 4: Close the upper frame on the frame base along the positioning pin and install the self-preloaded spring bolt; the self-preloaded spring bolt has a threaded part, which is inserted into the upper frame and threadedly connected to the frame base; fix the support ring on the upper frame.

[0049] Step 5: Observe the outer side of the self-lubricating split bearing being in contact with the support wheel body and the tire body. If not, it needs to be removed and reinstalled.

[0050] Step 6: Place timing belts on the two sets of intermediate shafts beforehand, move the timing belts to connect the two sets of herringbone tooth timing pulleys, and test whether the two sets of intermediate shafts rotate synchronously.

[0051] Step 7: Connect the fixed base to the external mounting surface using bolts;

[0052] Step 8: Install the normally closed quick-connect coupling on the top of the upper frame. The normally closed quick-connect coupling is connected to the oil inlet. Insert the oil pipe into the normally closed quick-connect coupling and move it downward against the arc-shaped vibration damping rod to inject grease. Rotate the intermediate shaft to observe the grease flowing into the surface of the self-lubricating split bearing. The installation is now complete.

[0053] The present invention has the following beneficial effects:

[0054] This invention employs topology optimization and lightweight design to reduce weight while maintaining rigidity. It utilizes a prism structure with a smooth, rounded shape and a surface strengthening process to treat stress concentration areas. This surface strengthening process significantly improves surface roughness and hardness, while introducing residual compressive stress into the surface layer of the part, effectively suppressing the initiation and propagation of fatigue cracks.

[0055] The core components of this invention are all made of forged alloy steel, while vulnerable parts incorporate composite materials and special polymer materials to improve performance. It adopts an integrated and modular design, providing a highly flexible installation solution that allows for self-alignment and axial movement, facilitating rapid replacement.

[0056] This invention achieves a stable connection by having a support wheel assembly and a buffer wheel assembly with a moderately angular distribution move against the surface of a self-lubricating split bearing. An external push rod assembly and an arc-shaped vibration damping rod assembly then push the support wheel body and the buffer wheel body. Self-preloaded spring bolts are installed to complete the constrained connection between the upper frame and the frame base. The installation cavity size is larger than that of the self-lubricating split bearing, resulting in more efficient heat dissipation.

[0057] This invention employs a heavy-duty hard-buffered spring seat assembly to elastically support the bottom of the bearing frame, thereby reducing noise and vibration impact and providing strong stability. A herringbone toothed synchronous pulley is installed and is bidirectionally configured, enabling stable transmission between the two sets of intermediate shafts via a synchronous belt. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the modular self-correcting bearing housing synchronous shaft assembly proposed in this invention;

[0059] Figure 2 This is a side view of the modular self-correcting bearing housing synchronous shaft assembly proposed in this invention;

[0060] Figure 3 This is a top view of the modular self-correcting bearing housing synchronous shaft assembly proposed in this invention;

[0061] Figure 4 This is a vertical sectional view of the bearing bracket proposed in this invention;

[0062] Figure 5 This is a vertical sectional view of the frame base proposed in this invention;

[0063] Figure 6 This is a vertical sectional view of the upper frame proposed in this invention;

[0064] Figure 7 This is a schematic diagram of the single bearing bracket of the bearing housing synchronous shaft assembly of the present invention without the upper frame;

[0065] Figure 8 This is a schematic diagram of the support wheel assembly structure of the present invention;

[0066] Figure 9 This is a side view of the support wheel assembly of the present invention;

[0067] Figure 10 for Figure 9 AA section diagram;

[0068] Figure 11This is a schematic diagram of the buffer wheel assembly structure of the present invention;

[0069] Figure 12 This is a side view of the buffer wheel assembly of the present invention;

[0070] Figure 13 for Figure 12 BB cross-section diagram;

[0071] Figure 14 This is a schematic diagram of the push rod assembly of the present invention;

[0072] Figure 15 This is a schematic diagram of the arc-shaped vibration damping rod assembly of the present invention;

[0073] Figure 16 This is a side view of the arc-shaped vibration damping rod assembly of the present invention;

[0074] Figure 17 for Figure 16 CC section view;

[0075] Figure 18 This is a schematic diagram of the structure of the self-preloaded spring bolt of the present invention;

[0076] Figure 19 This is a side view of the self-preloaded spring bolt of the present invention;

[0077] Figure 20 for Figure 19 DD cross-sectional view;

[0078] Figure 21 This is a schematic diagram of the synchronous shaft assembly of the present invention;

[0079] Figure 22 This is a front view of the synchronous shaft assembly;

[0080] Figure 23 for Figure 22 EE cross-sectional view;

[0081] Figure 24 This is a schematic diagram of the structure of the heavy-duty hard buffer spring seat assembly of the present invention;

[0082] Figure 25 This is a vertical cross-sectional view of the heavy-duty hard buffer spring seat assembly.

[0083] Legend: 1. Frame base; 10. Bearing bracket; 11. Step inner hole one; 12. Locating pin;

[0084] 2. Upper frame; 21. Oil inlet; 22. Normally closed quick-connect fitting; 23. Stepped inner hole two;

[0085] 3. Support wheel assembly; 30. Support wheel body; 31. Pin sleeve 1; 32. Copper adjusting shim; 33. Outer retaining ring; 34. Mandrel 1; 35. Snap ring; 36. Position bearing 1; 37. Annular groove;

[0086] 4. Buffer wheel assembly; 41. Buffer wheel body; 42. Tire body; 43. Second spindle; 44. Second pin sleeve; 45. Second position bearing;

[0087] 5. Push rod assembly; 51. Intelligent internal thread servo motor; 52. Ultra-lightweight rectangular spring II; 53. Push rod; 54. Ball head;

[0088] 6. Arc-shaped vibration damping rod assembly; 61. Arc-shaped vibration damping rod; 62. Ultra-lightweight rectangular spring III; 611. Crescent plate; 612. Support rod section;

[0089] 7. Self-preloaded spring bolt; 71. Support ring; 72. Socket head cap screw; 73. Ultra-light load rectangular spring (one type);

[0090] 8. Synchronous shaft assembly; 81. Intermediate shaft; 82. Self-lubricating split bearing; 83. Herringbone tooth synchronous pulley; 84. Synchronous belt; 85. Side groove;

[0091] 9. Heavy-duty hard buffer spring seat assembly; 91. Fixed base; 92. Sliding sleeve; 93. Heavy-duty rectangular spring. Detailed Implementation

[0092] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0093] Example 1

[0094] like Figure 1-20 As shown, this is one embodiment of the present invention: a modular self-correcting bearing housing synchronous shaft assembly, comprising:

[0095] like Figure 1 As shown, the bearing bracket 10 has a prism structure and is provided in two sets;

[0096] Synchronous shaft assembly 8 is divided into two groups, and each group of synchronous shaft assembly 8 is equipped with a self-lubricating split bearing 82. The self-lubricating split bearing 82 is installed in the corresponding bearing bracket 10. It includes a synchronization structure, which is installed and connected between the two groups of synchronous shaft assembly 8 for synchronous rotation of the two groups of synchronous shaft assembly 8.

[0097] The heavy-duty hard buffer spring seat assembly 9 is installed at the bottom of the bearing bracket 10 to support the bearing bracket 10;

[0098] like Figure 4 As shown, push rod assembly 5 and arc-shaped vibration damping rod assembly 6 are installed inside the bearing bracket 10. Multiple sets of push rod assemblies 5 are provided and distributed along the axis of the self-lubricating split bearing 82 together with the arc-shaped vibration damping rod assembly 6, and the included angles between adjacent assemblies are equal. Figure 4 The components are distributed at a 120° angle; a support wheel assembly 3 is installed between the push rod assembly 5 and the self-lubricating split bearing 82, and a buffer wheel assembly 4 is installed between the arc-shaped vibration damping rod assembly 6 and the self-lubricating split bearing 82; the support wheel assembly 3 and the buffer wheel assembly 4 abut against the surface of the self-lubricating split bearing 82. Figure 2 As can be seen from the surface, the slots are cut into the frame base and are pierced by the spindles one and two of the support wheel assembly and the buffer wheel assembly. Therefore, under its own weight, the support wheel body of the support wheel assembly does not abut against the synchronous shaft assembly. The push rod assembly is required to push the support wheel body to abut against the synchronous shaft assembly. The two sets of push rod assemblies and the arc surface vibration damping rod assembly are aligned together on the self-lubricating split bearing to achieve accurate alignment and precise installation.

[0099] An oil inlet channel 21 is provided on the bearing bracket 10, and lubrication ring grooves are provided on the self-lubricating split bearing 82 and the support wheel assembly 3.

[0100] Combination Figure 1 , 5 As shown in Figure 6, the bearing frame 10 includes a frame base 1 and an upper frame 2. The frame base 1 has a lower notch at its upper part, and the upper frame 2 has an upper notch at its bottom. The upper and lower notches are assembled to form an installation cavity. The self-lubricating split bearing 82 is installed in the installation cavity, and the outer diameter of the self-lubricating split bearing 82 is smaller than the diameter of the installation cavity. Thus, the lateral cavity allows for convection, ensuring that the self-lubricating split bearing, except for the contact surface, can achieve convective cooling surfaces, thereby overcoming the technical problem of low heat transfer efficiency due to the enclosed structure.

[0101] like Figure 4 As shown, a self-preloaded spring bolt 7 is installed between the frame base 1 and the upper frame 2, and the self-preloaded spring bolt 7 vertically connects the upper frame 2 and the frame base 1.

[0102] The bottom of the frame base 1 is provided with a mounting part, and the bottom of the mounting part is detachably connected to the heavy-duty hard buffer spring seat assembly 9.

[0103] like Figure 14As shown, the push rod assembly 5 includes an intelligent internal thread servo motor 51, which has an internal thread and is threadedly connected to a push rod 53; the push rod 53 has an external thread on its surface; an ultra-light load rectangular spring 52 is fitted on the push rod 53, and a ball head 54 is provided at the end of the push rod 53 away from the intelligent internal thread servo motor 51. The inner diameter of the ultra-light load rectangular spring 52 is larger than the outer diameter of the push rod 53 and smaller than the diameter of the ball head 54; wherein, the intelligent internal thread servo motor 51 is a high-precision control screw drive servo motor with built-in torque detection and overload alarm functions, and can be connected to a self-lubricating oil-air system; the ultra-light load rectangular spring 52 is made of high-performance alloy spring steel, which is tough, flexible and has excellent impact resistance; the push rod 53 is made of forged alloy steel with integral nitriding treatment, with excellent spherical wear resistance, and the rod thread is CNC machined, and is used in conjunction with the servo motor; the intelligent internal thread servo motor is also called a motor-integrated screw. The core technology lies in the servo motor's rotor, which is manufactured as a hollow structure with internal threads, essentially functioning as a precision nut. An external threaded rod passes through this hollow rotor and engages with its internal threads. Motion conversion: When the servo motor is powered on and rotates, it drives the internal "rotor nut" to rotate as well. Based on the principle of lead screw transmission, the rotating nut drives the mating push rod to perform precise linear motion.

[0104] The mounting holes of the support wheel 30 and the frame base 1 are oblong holes, which enable the bearing bracket to be automatically aligned with the intermediate shaft by driving the push rod 53 through the intelligent internal thread servo motor 51, and to be used to support the intermediate shaft body in daily maintenance work.

[0105] Combination Figure 4 and 5 A stepped inner hole 11 is provided on the frame base 1, and the push rod 53 and the ultra-lightweight rectangular spring 52 are constrained and installed in the stepped inner hole 11.

[0106] like Figure 8-10 As shown, the support wheel assembly 3 includes a spindle 34, on which a pin sleeve 31 is fixedly mounted. The axial section of the pin sleeve 31 is cross-shaped. Position bearings 36 are respectively mounted on both sides of the pin sleeve 31. An outer retaining ring 33 is also installed between the position bearings 36 and the pin sleeve 31 along the axis of the spindle. A copper adjusting shim 32 is installed on the other side of the corresponding position bearing for adjusting the clearance of the position bearings 36.

[0107] A support wheel body 30 is fitted over a pin sleeve 31. One side of the support wheel body 30 is retracted at one end of the pin sleeve 31, and a retaining spring 35 is installed on the other side to close at the other end of the pin sleeve 31.

[0108] Among them, the support wheel body 30 is made of powder metallurgy composite material, which has excellent wear resistance. The surface is provided with side grooves that cooperate with the push rod spherical surface to conduct oil and gas lubrication.

[0109] Pin 31 is made of forged alloy steel and nitrided as a whole. It is used to assemble bearings and limit bearing misalignment. The inner hole fits with the mandrel.

[0110] The copper adjusting shim 32 is used to precisely adjust the clearance of the bearing press fit, and also serves to protect the bearing and the sealing oil.

[0111] The outer retaining ring 33 and the inner single-flange double-row cylindrical roller bearing 36 are combined to form a high-temperature resistant mold steel bearing.

[0112] The spindle 34 is made of PEEK polymer material, which is impact-resistant, high-temperature resistant and has excellent cushioning performance;

[0113] Snap ring 35 is used to limit radial movement of the bearing assembly;

[0114] like Figure 11-13 As shown, the buffer wheel assembly 4 includes a second spindle 43 and a second pin sleeve 44. Position bearings 45 are respectively installed on both sides of the second pin sleeve 44. A buffer wheel body 41 and a tire body 42 are installed on the outer end of the second position bearing 45. The tire body 42 is fixedly installed on the outer side of the buffer wheel body 41.

[0115] The structure of the buffer wheel assembly is similar to that of the support wheel assembly. The difference is that the buffer wheel body 41 is made of high-temperature resistant mold steel with excellent mechanical properties; the tire body 42 is made of PU polyurethane material with extremely strong wear resistance and cushioning performance; the tire body is heat-processed or welded to the buffer wheel body to form a fixed connection.

[0116] like Figure 15-17 As shown, the arc-shaped vibration damping rod assembly 6 includes an arc-shaped vibration damping rod 61 and an ultra-lightweight rectangular spring 62. The arc-shaped vibration damping rod 61 includes a crescent plate 611 and a support rod 612. The ultra-lightweight rectangular spring 62 is sleeved on the support rod 612 and one end is fixedly connected to the crescent plate 611.

[0117] An inner hole 23 with a stepped surface is provided on the oil inlet channel 21. The other end of the ultra-lightweight rectangular spring 62 is fixedly connected to the inner wall of the inner hole 23 with the stepped surface; the arc-shaped shock-absorbing rod assembly 6 is constrained and installed in the inner hole 23 with the stepped surface.

[0118] The arc-shaped vibration damping rod assembly prevents the intermediate shaft from colliding with the bearing housing after the spindle breaks. Among them, the arc-shaped vibration damping rod 61 is made of high-temperature resistant mold steel with excellent mechanical properties; the ultra-lightweight rectangular spring 62 is made of high-performance alloy spring steel with excellent toughness, flexibility and impact resistance.

[0119] like Figure 18-20As shown, the self-preloaded spring bolt 7 includes an internal hexagon screw 72 and a support ring 71. The support ring 71 is fixedly installed on the head of the internal hexagon screw 72. An ultra-lightweight rectangular spring 73 is fixedly installed between the end of the internal hexagon screw 72 and the support ring 71. The ultra-lightweight rectangular spring 73 is sleeved on the head of the internal hexagon screw 72.

[0120] The self-preloaded spring bolt 7 is a fastener with preload, anti-loosening, and quick-release functions. It includes a support ring 71 made of stainless steel, which connects to a positioning hole machined on the upper frame. The socket head cap screw 72 is also made of stainless steel. The ultra-lightweight rectangular spring 73 is made of high-performance alloy spring steel, exhibiting excellent toughness, flexibility, and impact resistance. Furthermore, the support ring can be welded to the surface of the upper frame to restrict the position of the self-preloaded spring bolt.

[0121] This invention employs topology optimization and lightweight design to reduce weight while maintaining rigidity. It utilizes a prism structure with a smooth, rounded shape and a surface strengthening process to treat stress concentration areas. This surface strengthening process significantly improves surface roughness and hardness, while introducing residual compressive stress into the surface layer of the part, effectively suppressing the initiation and propagation of fatigue cracks.

[0122] The core components of this invention are all made of forged alloy steel, while vulnerable parts incorporate composite materials and special polymer materials to improve performance. It adopts an integrated and modular design, providing a highly flexible installation solution that allows for self-alignment and axial movement, facilitating rapid replacement.

[0123] This invention achieves a stable connection by having a support wheel assembly and a buffer wheel assembly with a moderately angular distribution move against the surface of a self-lubricating split bearing. An external push rod assembly and an arc-shaped vibration damping rod assembly then push the support wheel body and the buffer wheel body. Self-preloaded spring bolts are installed to complete the constrained connection between the upper frame and the frame base. The installation cavity size is larger than that of the self-lubricating split bearing, resulting in more efficient heat dissipation.

[0124] Example 2

[0125] like Figure 21-25 As shown, this is another embodiment of the present invention, such as... Figure 21-23 As shown, the synchronous shaft assembly 8 includes an intermediate shaft 81, on which a self-lubricating split bearing 82 is installed; the synchronous structure includes a herringbone tooth synchronous pulley 83.

[0126] A timing belt 84 is installed between the two sets of herringbone tooth timing pulleys 83. The inner side of the timing belt 84 is provided with teeth (not shown) that mesh with the corresponding herringbone tooth timing pulleys 83.

[0127] The two sets of intermediate shafts 81 are parallel, and the two sets of bearing brackets 10 are located on both sides of the synchronous belt 84.

[0128] Synchronous shaft assembly 8 is used to connect the frame, motor and core functional area.

[0129] The intermediate shaft 81 is made of high-temperature resistant mold steel, with excellent mechanical properties. It is machined with bearing mounting grooves and a keyway shaft end for use with couplings.

[0130] The self-lubricating split cylindrical roller bearing 82 is used in conjunction with the support wheel assembly and buffer wheel assembly of the modular diamond self-correcting bearing housing;

[0131] The herringbone toothed synchronous pulley 83 is made of high-temperature resistant mold steel, with excellent mechanical properties. It is the core component of the entire synchronous shaft system. The whole structure adopts a lightweight design, is machined in one piece by CNC, and undergoes overall nitriding treatment, resulting in excellent wear resistance and corrosion resistance.

[0132] When the intermediate shaft needs to be replaced, the push rod on the push rod assembly retracts, causing the support wheel body to no longer abut under its own weight, and the intermediate shaft is pulled out by a pull-out method. To ensure connection stability, a constraint ring (not shown) can be fixedly installed in the side groove. The thickness of the constraint ring is adapted to the diameter of the annular groove, thereby achieving snap-fit ​​constraint and axial limitation. When the intermediate shaft is removed again, the push rod is retracted first, and then the external abutment part abuts against the tire body, causing the tire body to move upward, and then the intermediate shaft is pulled out. After the intermediate shaft is replaced, the external abutment part disengages, allowing the tire body to abut against the self-lubricating split bearing, and the constraint ring is re-clamped in the annular groove, completing the intermediate shaft replacement.

[0133] like Figure 24 and 25 As shown, the heavy-duty hard buffer spring seat assembly 9 includes a fixed base 91, the middle of which protrudes upward and is fitted with a sliding sleeve 92; a heavy-duty rectangular spring 93 is fitted on the outer side of the sliding sleeve 92, and the bottom end of the heavy-duty rectangular spring 93 is fixedly connected to the fixed base 91; mounting holes are provided on both the sliding sleeve 92 and the fixed base 91.

[0134] The heavy-duty hard buffer spring seat assembly 9 is used to buffer the longitudinal impact of the entire system.

[0135] The fixed base 91 is made of forged alloy steel and has mounting holes for connection to a workbench surface, which can be an equipment frame or a building surface. The sliding sleeve 92 is made of forged alloy steel and has undergone integral nitriding treatment, resulting in excellent wear resistance.

[0136] The heavy-duty rectangular spring 93 is made of high-performance alloy spring steel, exhibiting excellent toughness, flexibility, and impact resistance. The forged alloy steel materials for each component are selected based on actual application; the push rod, pin sleeve one, pin sleeve two, and sliding sleeve can be made of 42CrMo, emphasizing high strength and wear resistance. This material possesses extremely high strength and good hardenability, and after nitriding treatment, it exhibits extremely high surface hardness and excellent wear resistance, fully meeting the descriptions of "excellent spherical wear resistance" for the push rod and "overall nitriding treatment" for the pin sleeve.

[0137] Intermediate shafts, herringbone toothed synchronizer pulleys, and arc-shaped vibration damping rods can be made of 40CrNiMo or 35CrMo, highlighting their excellent toughness and impact resistance. Intermediate shafts and synchronizer pulleys need to withstand complex alternating loads. 40CrNiMo possesses excellent comprehensive mechanical properties and toughness; 35CrMo, due to its good creep strength and durability at high temperatures, is also commonly used to manufacture heavy-duty drive shafts and gears that withstand impacts, bending, and torsion.

[0138] The support wheel body and buffer wheel assembly can be made of 20CrMnTi, with carburizing hardening and core toughness. This highlights the need for parts with extremely hard and wear-resistant surfaces, while maintaining good toughness in the core.

[0139] Heavy-duty rectangular springs and various types of light-duty rectangular springs can be made of 50CrVA or 60Si2Mn, which have high yield strength and fatigue limit.

[0140] A method for installing a modular self-aligning bearing housing synchronous shaft assembly, comprising the bearing housing synchronous shaft assembly of claim 9, including the following steps:

[0141] Step 1, Pre-installation:

[0142] A. Separate the upper frame 2 and the frame base 1; install the push rod assembly 5 in the inner hole 11 of the step inside the frame base 1; adjust the spindle 34 of the support wheel assembly 3 to extend out of both ends of the frame base 1, and test the push rod assembly 5 to move within its limit range to abut the support wheel body 30; pre-install the positioning pin 12 inside the frame base 1; perform surface treatment on the notch positions of the upper frame and the frame base.

[0143] B. Install the arc-shaped vibration damping rod assembly 6 in the inner hole 23 of the step inside the upper frame 2, weld the ultra-lightweight rectangular spring 62 to the step surface of the inner hole 23 and ensure that the axis is coaxial with the axis of the inner hole 23;

[0144] C. A self-lubricating split bearing 82 and a herringbone toothed synchronous pulley 83 are fixedly installed on the intermediate shaft 81 respectively;

[0145] Step 2: Secure the sliding sleeve 92 to the bottom of the frame base 1 with bolts, so that the frame base 1 is connected to the heavy-duty hard buffer spring seat assembly 9.

[0146] Step 3: Install the self-lubricating split bearing 82 on the surface of the two sets of support wheel bodies 30. The lubrication ring groove is provided with a side groove 85 and an annular groove 37. The side groove 85 is opened on the self-lubricating split bearing 82, and the annular groove 37 is opened on the surface of the support wheel body 30. The groove diameter of the annular groove 37 is larger than the groove diameter of the side groove 85, and the side groove 85 abuts against the annular groove 37.

[0147] Step 4: Close the upper frame 2 onto the frame base 1 along the positioning pin 12, and install the self-pre-tightening spring bolt 7; the self-pre-tightening spring bolt 7 has a threaded part, which is inserted into the upper frame 2 and threadedly connected to the frame base 1; fix the support ring 71 on the upper frame 2.

[0148] Step 5: Observe the outer side of the self-lubricating split bearing 82 being abutted by the support wheel body 30 and the tire body 42. If not, it needs to be removed and reinstalled.

[0149] Step 6: Place the timing belt 84 on the two sets of intermediate shafts 81 in advance, move the timing belt 84 to connect the two sets of herringbone tooth timing pulleys 83, and test whether the two sets of intermediate shafts 81 rotate synchronously.

[0150] Step 7: Connect the fixed base 91 to the external mounting surface using bolts;

[0151] Step 8: Install the normally closed quick connector 22 on the top of the upper frame 2. The normally closed quick connector 22 is connected to the oil inlet 21. Insert the oil pipe into the normally closed quick connector 22 and abut against the arc-shaped vibration damping rod 61 to move downwards. Inject grease. Rotate the intermediate shaft 81 to observe the grease flowing into the surface of the self-lubricating split bearing 82. The installation is then complete.

[0152] The grease lubrication path is established by introducing grease through the normally closed quick-connect fitting. Initially, the arc-shaped vibration damping rod is pushed downwards, opening the crescent plate at two points where it aligns with the inner hole of the step, allowing the grease to fall onto the surface of the self-lubricating split bearing. As the grease falls again between the side groove and the annular groove onto the surface of the support wheel, grease lubrication is achieved. Initially, the intermediate shaft is rotated to complete the grease flow, ensuring even distribution on the surfaces of all moving contact wheels and bearings.

[0153] This invention employs a heavy-duty hard-buffered spring seat assembly to elastically support the bottom of the bearing frame, thereby reducing noise and vibration impact and providing strong stability. A herringbone toothed synchronous pulley is installed and is bidirectionally configured, enabling stable transmission between the two sets of intermediate shafts via a synchronous belt.

[0154] Furthermore, the lubrication method in this application can be:

[0155] When selecting a closed enclosure, use thin oil lubrication or oil-air lubrication;

[0156] When the enclosed housing is not selected, the oil circuit is semi-enclosed and can be self-lubricated by a glycerin lubrication system or manually injected.

[0157] The fixing base of the heavy-duty hard buffer spring seat assembly of this application can be anchored to the pre-embedded pile by chemical anchor bolts and then buried in the foundation by concrete pouring, so as to achieve the constraint and fixation of the heavy-duty hard buffer spring seat assembly.

[0158] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 modular self-correcting bearing housing synchronous shaft assembly, characterized in that, include: The bearing bracket (10) has a prism structure and is provided in two sets; Synchronous shaft assembly (8) is divided into two groups, and each group of synchronous shaft assembly (8) is equipped with a self-lubricating split bearing (82). The self-lubricating split bearing (82) is installed in the corresponding bearing bracket (10). It includes a synchronous structure, which is installed and connected between the two groups of synchronous shaft assembly (8) for the synchronous rotation of the two groups of synchronous shaft assembly (8). The heavy-duty hard buffer spring seat assembly (9) is installed at the bottom of the bearing bracket (10) to support the bearing bracket (10). A push rod assembly (5) and an arc-shaped vibration damping rod assembly (6) are installed inside the bearing frame (10). Multiple sets of push rod assemblies (5) are provided and distributed along the axis of the self-lubricating split bearing (82) together with the arc-shaped vibration damping rod assembly (6), and the included angle between adjacent assemblies is equal. A support wheel assembly (3) is installed between the push rod assembly (5) and the self-lubricating split bearing (82), and a buffer wheel assembly (4) is installed between the arc-shaped vibration damping rod assembly (6) and the self-lubricating split bearing (82). The support wheel assembly (3) and the buffer wheel assembly (4) abut against the surface of the self-lubricating split bearing (82). An oil inlet channel (21) is provided on the bearing bracket (10), and a lubrication ring groove is provided on both the self-lubricating split bearing (82) and the support wheel assembly (3).

2. The modular self-correcting bearing housing synchronous shaft assembly according to claim 1, characterized in that, The bearing frame (10) includes a frame base (1) and an upper frame (2). The upper part of the frame base (1) is provided with a lower notch, and the bottom of the upper frame (2) is provided with an upper notch. The upper notch and the lower notch are paired to form an installation cavity. The self-lubricating split bearing (82) is installed in the installation cavity and the outer diameter of the self-lubricating split bearing (82) is smaller than the diameter of the installation cavity. A self-pre-tightening spring bolt (7) is installed between the frame base (1) and the upper frame (2). The self-pre-tightening spring bolt (7) vertically connects the upper frame (2) and the frame base (1). The self-pre-tightening spring bolt (7) and the frame base (1) are welded together after interference fit. The bottom of the frame base (1) is provided with a mounting part, and the bottom of the mounting part is detachably connected to the heavy-duty hard buffer spring seat assembly (9).

3. The modular self-correcting bearing housing synchronous shaft assembly according to claim 1, characterized in that, The self-preloaded spring bolt (7) includes an internal hexagon screw (72) and a support ring (71). The support ring (71) is fixedly installed on the head of the internal hexagon screw (72). An ultra-lightweight rectangular spring (73) is fixedly installed between the end of the internal hexagon screw (72) and the support ring (71). The ultra-lightweight rectangular spring (73) is sleeved on the head of the internal hexagon screw (72).

4. A modular self-correcting bearing housing synchronous shaft assembly according to claim 3, characterized in that, The push rod assembly (5) includes an intelligent internal thread servo motor (51), which has an internal thread and is threaded to a push rod (53); the push rod (53) has an external thread on its surface. An ultra-lightweight rectangular spring 2 (52) is fitted on the push rod (53). A ball head (54) is provided at the end of the push rod (53) away from the intelligent internal thread servo motor (51). The inner diameter of the ultra-lightweight rectangular spring 2 (52) is larger than the outer diameter of the push rod (53) and smaller than the diameter of the ball head (54). A stepped inner hole (11) is provided on the frame base (1), and the push rod (53) and the ultra-lightweight rectangular spring (52) are constrained and installed in the stepped inner hole (11).

5. A modular self-correcting bearing housing synchronous shaft assembly according to claim 3, characterized in that, The arc-shaped vibration damping rod assembly (6) includes an arc-shaped vibration damping rod (61) and an ultra-lightweight rectangular spring (62). The arc-shaped vibration damping rod (61) includes a crescent plate (611) and a support rod (612). The ultra-lightweight rectangular spring (62) is sleeved on the support rod (612) and one end is fixedly connected to the crescent plate (611). The oil inlet channel (21) has a stepped inner hole two (23), and the other end of the ultra-lightweight rectangular spring three (62) is fixedly connected to the inner wall of the stepped inner hole two (23); the arc surface vibration damping rod assembly (6) is constrained and installed in the stepped inner hole two (23).

6. A modular self-correcting bearing housing synchronous shaft assembly according to claim 3, characterized in that, The support wheel assembly (3) includes a spindle (34), on which a pin sleeve (31) is fixedly installed. The axial section of the pin sleeve (31) is cross-shaped. Position bearings (36) are installed on both sides of the pin sleeve (31). An outer ring retaining ring (33) is also installed between the position bearings (36) and the pin sleeve (31) along the axis of the spindle. A copper adjusting shim (32) is installed on the other side of the corresponding position bearing to adjust the clearance of the position bearings (36) during press fitting. A support wheel body (30) is fitted over a pin sleeve (31). One side of the support wheel body (30) is retracted at one end of the pin sleeve (31), and a snap ring (35) is installed on the other side to close at the other end of the pin sleeve (31).

7. A modular self-correcting bearing housing synchronous shaft assembly according to claim 3, characterized in that, The buffer wheel assembly (4) includes a second spindle (43) and a second pin sleeve (44). Position bearings (45) are installed on both sides of the second pin sleeve (44). A buffer wheel body (41) and a tire body (42) are installed at the outer end of the second position bearing (45). The tire body (42) is fixedly installed on the outer side of the buffer wheel body (41).

8. A modular self-correcting bearing housing synchronous shaft assembly according to claim 3, characterized in that, The synchronous shaft assembly (8) includes an intermediate shaft (81), on which a slot is cut and a self-lubricating split bearing (82) is installed; the synchronous structure includes a herringbone tooth synchronous pulley (83). A timing belt (84) is installed between the two sets of herringbone toothed synchronous pulleys (83); The two intermediate shafts (81) are parallel to each other, and the two bearing brackets (10) are located on both sides of the synchronous belt (84).

9. A modular rhomboid self-correcting bearing housing synchronous shaft assembly according to claim 8, characterized in that, The heavy-duty hard buffer spring seat assembly (9) includes a fixed base (91), the middle of which protrudes upward and is fitted with a sliding sleeve (92); a heavy-duty rectangular spring (93) is fitted on the outside of the sliding sleeve (92), and the bottom end of the heavy-duty rectangular spring (93) is fixedly connected to the fixed base (91); mounting holes are provided on both the sliding sleeve (92) and the fixed base (91).

10. A method for installing a modular self-aligning bearing housing synchronous shaft assembly, characterized in that, Including the bearing housing synchronous shaft assembly of claim 9, the following steps are performed: Step 1, Pre-installation: A. Separate the upper frame (2) and the frame base (1); install the push rod assembly (5) in the inner hole (11) of the step inside the frame base (1); adjust the spindle (34) of the support wheel assembly (3) to extend out of both ends of the frame base (1), and test the push rod assembly (5) to move within the limit range to abut the support wheel body (30); pre-install the positioning pin (12) inside the frame base (1). B. Install the arc-shaped vibration damping rod assembly (6) in the inner hole of the step (23) in the upper frame (2), weld the ultra-lightweight rectangular spring (62) to the step surface of the inner hole (23) and ensure that the axis is coaxial with the axis of the inner hole (23); C. Self-lubricating split bearings (82) and herringbone toothed synchronous pulleys (83) are fixedly installed on the intermediate shaft (81), and both are interference-fitted with the intermediate shaft (81); Step 2: Fix the sliding sleeve (92) to the bottom of the frame base (1) with bolts so that the frame base (1) is connected to the heavy-duty hard buffer spring seat assembly (9); Step 3: Install the self-lubricating split bearing (82) on the surface of the two sets of support wheel bodies (30). The lubrication ring groove is provided with a side groove (85) and an annular groove (37). The side groove (85) is opened on the self-lubricating split bearing (82), and the annular groove (37) is opened on the surface of the support wheel body (30). The groove diameter of the annular groove (37) is larger than the groove diameter of the side groove (85). The side groove (85) abuts against the annular groove (37). Step 4: Close the upper frame (2) on the frame base (1) along the positioning pin (12) and install the self-tightening spring bolt (7); the self-tightening spring bolt (7) has a threaded part, inserts into the upper frame (2) and threadedly connects to the frame base (1); fix the support ring (71) on the upper frame (2); Step 5: After the outer side of the self-lubricating bearing (82) is abutted by the support wheel (30), the synchronous shaft assembly (8) is lifted by the ball head (54) of the intelligent internal thread servo motor (51) until the outer side of the self-lubricating bearing (82) is abutted by the tire body (42), at which point it is installed in place. Step 6: Place timing belts (84) on the two sets of intermediate shafts (81) in advance, move the timing belts (84) to connect the two sets of herringbone tooth timing pulleys (83), and test whether the two sets of intermediate shafts (81) rotate synchronously. Step 7: Connect the fixed base (91) to the external mounting surface with bolts; Step 8: Install a normally closed quick-connect fitting (22) on the top of the upper frame (2). The normally closed quick-connect fitting (22) is connected to the oil inlet (21). Insert the oil pipe into the normally closed quick-connect fitting (22) and abut against the arc surface damping rod (61) to move downwards. Inject grease. Rotate the intermediate shaft (81) to observe the grease flowing into the surface of the self-lubricating split bearing (82) to complete the installation.

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