Inclined surface limiting block locking connection structure and use method

Abstract

The application discloses a bevel limiting block locking connection structure and a use method, relates to the technical field of mechanical part assembly, and comprises flanges one and two, which are provided with engaging portions on opposite sides; the engaging portions are laterally provided with connection structures one; a limiting block is laterally provided with a connection structure two; the connection structure one is matched with the connection structure two to form a bevel wedge, which is used for axial limiting; the limiting block and the engaging portion are distributed in a circle and are connected, which are used for radial limiting; mounting holes are formed in the limiting block; a middle positioning shaft is located between the flanges one and two and is provided with a positioning hole on the surface; a fastening pair is connected to the positioning hole through the mounting holes and is used for restricting the limiting block on the middle positioning shaft, so as to solve the technical problems of complicated installation, insufficient strength and inability to be repeatedly repaired and used in the locking butt joint structure in the prior art.

Description

Technical Field

[0001] This invention relates to the field of mechanical component assembly technology, and in particular to a locking connection structure and method of using an inclined plane limiting block. This invention is mainly suitable for various transmission components, flanges, and other axially mating assembly conditions, and is widely used in conveying equipment, metallurgical transmission, and other equipment requiring high-precision torque transmission, frequent disassembly and assembly, and long-term alternating load operation. Background Technology

[0002] Currently, the mainstream standardized positioning and locking solutions for the docking and assembly of mating parts such as flanges, drive shafts, and drive discs in the industry fall into two categories:

[0003] Traditional Solution 1: End Face Tooth Positioning Structure: End face teeth + multiple sets of through bolts and nuts for locking, such as Figure 1 and 2 As shown;

[0004] Traditional Solution 2: End Face Key Positioning Structure: End face key + stop centering structure + multiple sets of through bolts and nuts for locking, such as Figure 3 and 4 As shown.

[0005] Both types of structures rely on end face teeth / end face keys to achieve circumferential positioning, and are equipped with a large number of bolts and nuts that pass through the flange body to complete the locking. This is a common and mature connection form in the field of mechanical transmission. However, in the long-term actual production and equipment operation and maintenance process, multiple structural defects have been exposed, and there is obvious room for optimization and upgrading.

[0006] Existing end-face tooth and end-face key connections mostly use multiple sets, or even more than 20 sets, of bolts and nuts to achieve flange fitting and fixation, which has the following problems:

[0007] 1) The structural strength of the component is damaged, resulting in a decrease in its load-bearing capacity;

[0008] Flange installation requires pre-drilling or slotting a large number of holes to reserve space for bolts. The processing removes a large amount of base material, which continuously reduces the effective wall thickness of the parts and reduces the overall rigidity. This further weakens the tensile, torsional and pressure resistance of the parts, making them prone to failure problems such as flange deformation, end face tooth breakage and keyway cracking under heavy load and impact conditions.

[0009] 2) The large number of parts to be installed leads to complicated assembly procedures and low production efficiency. For example, manual assembly requires aligning bolt holes, threading rods, and tightening diagonally in stages. The disassembly and assembly process involves many steps and takes a long time for a single person to disassemble and assemble each time. This lengthens the assembly cycle of large-scale production lines and limits production capacity. Tightening multiple sets of bolts requires strict control of the diagonal preload torque. Manual operation can easily result in uneven torque and poor assembly consistency.

[0010] 3) Poor long-term operational stability, prone to connection failures;

[0011] The continuous operation of the equipment generates alternating torque and vibration loads, and a large number of bolts are subjected to long-term cyclic stress, which easily leads to thread loosening and preload decay. Secondly, after the bolts loosen, gaps are generated between the two flange end faces, and the end face teeth / end face keys experience relative sliding friction, which aggravates the wear of the tooth and key surfaces, gradually leading to pitting and plastic deformation of the tooth surfaces. In severe cases, the teeth and keys break directly, and the equipment has to be shut down.

[0012] 4) High cost of later maintenance and repair, and parts cannot be reused;

[0013] In traditional connection methods, the conventional repair method for wear and chipping of the end face teeth is to perform tooth reduction on a machine tool, which reduces the flange thickness. Tooth reduction directly shortens the overall axial length of the part. If there are multiple tooth surface connections in the axial direction, the impact of tooth reduction on length is even more pronounced.

[0014] To address these issues, this invention proposes a sloped limiting block locking connection structure and its usage method. Summary of the Invention

[0015] To overcome the above shortcomings, the present invention provides a solution to the technical problems of cumbersome installation, insufficient strength, and inability to be repeatedly repaired and reused in existing locking and docking structures.

[0016] To achieve the above objectives, the present invention adopts the following technical solution:

[0017] The inclined plane limiting block locking connection structure includes:

[0018] Flange 1 and Flange 2 are both provided with interlocking parts on their opposite sides; a connecting structure 1 is provided on the side of the interlocking parts;

[0019] The limiting block has a second connecting structure on its side; the first connecting structure and the second connecting structure are adapted to form a wedge-shaped inclined surface for axial limiting; the limiting block and the engaging part are distributed in the same circle and connected for radial limiting; the limiting block has a mounting hole.

[0020] The intermediate positioning shaft is located between flange one and flange two, and its surface is provided with positioning holes;

[0021] The fastening pair passes through the mounting hole and connects to the positioning hole to constrain the limiting block on the intermediate positioning shaft.

[0022] In a further technical solution, the first connecting structure includes a first connecting tooth and a first recessed groove; the second connecting structure includes a second connecting tooth and a second recessed groove; when the biting part and the limiting block are connected, the first connecting tooth is adapted to and connected with the second recessed groove; the second connecting tooth is adapted to and connected with the first recessed groove.

[0023] In a further technical solution, the connecting teeth one and two are inclined on their upper and lower surfaces along the axial direction of the intermediate positioning axis.

[0024] In a further technical solution, the intermediate positioning shaft is separately set with flange one and flange two; a constraint hole is opened on the opposite side of flange one and flange two, and the constraint hole is adapted to both ends of the intermediate positioning shaft.

[0025] In a further technical solution, two sets of interlocking parts are provided on both flange one and flange two, and when flange one and flange two are installed, the four sets of interlocking parts are arranged in a cross shape; limit blocks are installed in a common circle between adjacent interlocking parts.

[0026] Both sides of the limiting block are provided with connecting structure two, and both sides of the biting part are provided with connecting structure one.

[0027] In a further technical solution, both the first connecting tooth and the second connecting tooth are provided with at least two sets;

[0028] The limiting block is arranged in a fan shape with a mounting hole in the middle.

[0029] In a further technical solution, a gap is provided between the limiting block and flange one or flange two of the non-engaging part.

[0030] In a further technical solution, the fastening pair includes a double-ended stud, the positioning hole is a threaded hole, one end of the double-ended stud passes through the mounting hole and is threadedly connected to the positioning hole; the mounting hole is a stepped hole, and a lock nut is installed on the other end of the double-ended stud and locked in the mounting hole.

[0031] In a further technical solution, stepped inner holes are provided on both sides of the limiting block, and insertion holes are provided on both sides of the interlocking part.

[0032] An arc-shaped rod is installed inside the stepped inner hole, with an inclined surface on the side of the arc-shaped rod facing the locking nut. A spring is fitted onto the arc-shaped rod. A fixing plate is provided at one end of the spring, with a central hole in the fixing plate fitted and fixedly connected to the arc-shaped rod. A sealing plate is provided at the other end of the spring, fitted onto the arc-shaped rod and fixedly connected to the stepped inner hole. When the arc-shaped rod moves, it causes the fixing plate to compress the spring, and the other end of the arc-shaped rod is inserted into the insertion hole. The mounting hole has an internal thread and is threadedly connected to one end of a double-ended stud.

[0033] The method of using the inclined plane limiting block locking connection structure includes the following steps:

[0034] Step 1, Install the structure:

[0035] First, install the intermediate positioning shaft between flange one and flange two, and adjust the angle of the intermediate positioning shaft; then, connect the second connecting structure of the limiting block along the first connecting structure of the interlocking part, so that the first connecting tooth is inserted into the second recess, and the second connecting tooth is inserted into the first recess.

[0036] The limiting block is pushed back so that the limiting block and the two sides of the engagement part are concentric circles;

[0037] Install a double-ended stud. One end of the double-ended stud passes through the mounting hole and is threaded into the positioning hole. The other end is locked onto the limit block by a lock nut.

[0038] Step 2, Disassembly and Assembly: After a certain period of use, remove the double-ended studs and take out the limiting block;

[0039] Step 3: Inspect the wear condition on both sides of the limiting block; when the wear of the limiting block does not meet the standard, cut and grind the connecting structure 2 on both sides, so that the connecting structure 2 on both sides shrinks inward along the arc surface;

[0040] Step 4: Reinstall the limit block and push it into the connecting structure 1 on both sides so that the two sides abut against the connecting structure 1 and the outer side of the interlocking part of flange 1 and flange 2. Then reinstall the double-ended stud and lock it with the lock nut.

[0041] The present invention has the following beneficial effects:

[0042] Compared to traditional connection structures, this invention completely eliminates the need for multiple sets, even more than 20 sets, of through bolts and nuts for locking, significantly reducing the number of fasteners and simplifying the locking mechanism. Secondly, it eliminates batch drilling and grooving processes, without cutting away the base material of the parts, thus preserving the original wall thickness and structural dimensions of the parts and eliminating the problem of strength loss at the source. Furthermore, it eliminates the need for openings or grooves in the flange body, adopting multiple sets of limit blocks evenly distributed at 45° on the outer periphery, combined with a locking mode using a central positioning shaft, completely abandoning the multiple bolt structure that penetrates the flange. This not only facilitates processing and installation but also ensures overall strength.

[0043] After the outer side of the limiting block is worn, the present invention allows for direct disassembly of the limiting block to grind the arc-shaped side and the second lateral connection structure. Even if the surface size is reduced after grinding, such as the arc-shaped side being shortened, the installation position of the limiting block will be pushed, without affecting reinstallation. In other words, the fan-shaped limiting block can be repeatedly ground and reinstalled on the locking connection structure, ensuring continuous structural use.

[0044] This invention utilizes a double-ended stud to compress the arc-shaped rods on both sides. When the double-ended stud is connected to the central positioning shaft, the arc-shaped rods on both sides are pushed into the insertion holes of the engagement part, achieving radial locking. Even in the event of a broken double-ended stud, it is highly likely that the limiting block will not disengage from the engagement part, preventing separation during rotation. Attached Figure Description

[0045] Figure 1 A schematic diagram of an existing end face tooth positioning structure;

[0046] Figure 2 for Figure 1 A schematic diagram of the flange 1 with an end face tooth positioning structure;

[0047] Figure 3 A schematic diagram of an existing end-face key positioning structure;

[0048] Figure 4 for Figure 3 A schematic diagram of the flange 1 with an end face key positioning structure;

[0049] Figure 5 This is a schematic diagram of the inclined plane limiting block locking connection structure proposed in this invention;

[0050] Figure 6 This is a schematic diagram of the structure of flange one proposed in this invention;

[0051] Figure 7 for Figure 6 Enlarged view of part A;

[0052] Figure 8 This is a schematic diagram of the structure of flange two proposed in this invention;

[0053] Figure 9 This is a side view of the present invention;

[0054] Figure 10 This is a schematic diagram of the structure of the limiting block of the present invention. Figure 1 ;

[0055] Figure 11 This is a schematic diagram of the structure of the limiting block of the present invention. Figure 2 ;

[0056] Figure 12 This is a schematic diagram of the structure of the intermediate positioning shaft of the present invention;

[0057] Figure 13 This is a cross-sectional view of the inclined plane limiting block locking connection structure of the present invention;

[0058] Figure 14 This is a horizontal sectional view of the inclined limiting block locking connection structure of the present invention along the mounting hole;

[0059] Figure 15 This is a schematic diagram illustrating the disassembly, grinding, and installation of the limiting block of the present invention;

[0060] Figure 16 This is a horizontal sectional view along the mounting hole of another inclined limiting block locking connection structure of the present invention;

[0061] Figure 17 for Figure 16 Enlarged view of part C.

[0062] legend:

[0063] 1. Flange 1; 2. Flange 2; 3. Engaging part; 31. Connecting tooth 1; 32. Recessed groove 1;

[0064] 4. Limiting block; 41. Mounting hole; 42. Connecting tooth two; 43. Notch two;

[0065] 5. Intermediate positioning shaft; 51. Positioning hole;

[0066] 6. Double-ended stud; 61. Lock nut;

[0067] 7. Gap; 8. Constraint hole;

[0068] 33. Insertion hole; 44. Stepped inner hole; 91. Curved rod; 92. Spring; 93. Fixing plate; 94. Sealing plate. Detailed Implementation

[0069] 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.

[0070] Figure 1 and 2 This is a schematic diagram of the end face tooth positioning structure, which uses multiple sets of bolts and nuts for locking and is connected by meshing through the tooth surfaces of the end face; Figure 3 and 4 The end-face key positioning structure also uses multiple sets of bolts and nuts for locking, and is connected through keyways and fittings. This presents several problems, including damage to the original flange structure and the use of multiple bolts.

[0071] Example 1

[0072] like Figure 1-15 As shown, in one embodiment of the present invention, the inclined plane limiting block locking connection structure includes:

[0073] like Figure 5-8 As shown, flange 1 and flange 2 are both provided with interlocking parts 3 on their opposite sides; the interlocking parts 3 are provided with connecting structure 1 on their sides; flange 1 and flange 2 are the main bodies for docking, and the interlocking parts at both ends are machined as one piece, without bolt through holes, end face teeth and end face keyways; flange 1 is provided with two sets of interlocking parts distributed at 180°; flange 2 is provided with two sets of interlocking parts distributed at 180°.

[0074] like Figure 10 and 11As shown, the limiting block 4 has a second connecting structure on its side; the first connecting structure and the second connecting structure are adapted to form a wedge-shaped inclined surface for axial limiting; the limiting block 4 and the interlocking part 3 are distributed and connected in a cocircumference for radial limiting; the limiting block 4 has a mounting hole 41; a total of 4 limiting blocks are provided, which are evenly distributed along the circumference of the flange at 45°, serving as the core components for axial locking and circumferential limiting;

[0075] like Figure 12 As shown, the intermediate positioning shaft 5 is located between flange 1 and flange 2, and has a positioning hole 51 on its surface; it is coaxially set at the docking center of the two flanges, which plays the role of radial centering and ensuring the coaxiality of transmission, replacing the traditional integrated structure of the stop centering and reducing the amount of flange machining.

[0076] like Figure 14 As shown, the fastening pair passes through the mounting hole 41 and connects to the positioning hole 51 to constrain the limiting block 4 on the intermediate positioning shaft 5. The locking fastening pair only acts on the limiting block 4 and the positioning shaft, without damaging the flange base material. The beveled contact surface can be treated with overall wear-resistant reinforcement.

[0077] This embodiment's complete connection mechanism includes mating flange one, flange two, an intermediate positioning shaft, four sets of limit blocks, and four sets of fastening bolts and nuts, replacing the traditional end-face tooth / end-face key + multiple sets of through bolts structure. It can be directly adapted to replace and install original equipment components.

[0078] Fastening pair: A small number of bolts and nuts are provided, which are only used to connect the fixed limit block 4 and the center positioning shaft, and do not need to pass through the flange body.

[0079] like Figure 7 and 10 As shown, the first connecting structure includes a connecting tooth 31 and a notch 32; the second connecting structure includes a connecting tooth 42 and a notch 43; when the biting part 3 and the limiting block 4 are connected, the connecting tooth 31 is adapted to and connected to the notch 43; the connecting tooth 42 is adapted to and connected to the notch 32.

[0080] like Figure 7 As shown, connecting teeth 31 and 42 are inclined on their upper and lower surfaces along the axial direction of the intermediate positioning shaft 5. The contact of the inclined surfaces can achieve a stable guiding connection and a biting support effect.

[0081] The present invention is as follows Figure 7 The connecting teeth are drawn in two sets; the number can be increased in actual use. Similarly, other structural forms can be used to achieve the same function, such as using wavy or sawtooth structures for connection.

[0082] like Figure 13As shown, in this embodiment, the intermediate positioning shaft 5 is separately set from flange 1 and flange 2; constraint holes 8 are provided on the opposite side of flange 1 and flange 2, and the constraint holes 8 are adapted to the two ends of the intermediate positioning shaft 5. Furthermore, the intermediate positioning shaft can also be fixedly connected to flange 1 or flange 2, or the intermediate positioning shaft can be changed to a telescopic shaft, as long as the intermediate positioning shaft maintains the central axis positioning and is positioned and connected to the limit block.

[0083] The flange 1 and flange 2 are provided with two sets of interlocking parts 3, and when flange 1 and flange 2 are installed, the four sets of interlocking parts 3 are arranged in a cross shape; the adjacent interlocking parts 3 are all equipped with limit blocks 4 in a common circle.

[0084] Both sides of the limiting block 4 are provided with connecting structure 2, and both sides of the biting part 3 are provided with connecting structure 1.

[0085] Although this invention includes four sets of interlocking parts and four sets of limiting blocks, the quantity and distribution are not limited thereto. For example, a single set of interlocking parts can also be used, with one set of interlocking parts each on flange one and flange two, distributed at 180°, and long arc-shaped limiting blocks installed between them. The limiting blocks and the interlocking parts are also connected by connecting structure one and connecting structure two. Alternatively, flange one can use two sets of interlocking parts, but the arc lengths of the two sets of interlocking parts are not equal, which can also achieve a cross-shaped connection.

[0086] Both connecting teeth 31 and 42 are provided in at least two sets; the limiting block 4 is arranged in a fan shape, with a mounting hole 41 in the middle. Figure 9 The limiting block 4 and the flange 1 or flange 2 of the non-engaging part 3 are both provided with a gap 7.

[0087] In this embodiment, the fastening pair includes a double-ended stud 6. The positioning hole 51 is a threaded hole. One end of the double-ended stud 6 passes through the mounting hole 41 and is threadedly connected to the positioning hole 51. The mounting hole 41 is a stepped hole, and the other end of the double-ended stud 6 is fitted with a lock nut 61 and locked into the mounting hole 41. Similarly, the fastening pair mainly serves to connect the intermediate positioning shaft and the limiting block. Therefore, other fasteners, such as long bolts, can also be used to replace the connecting function of the double-ended stud.

[0088] Assembly and locking working principle:

[0089] Flange 1 and Flange 2 are respectively fitted onto both ends of the central positioning shaft. Precise radial centering is achieved by inserting the outer circle of the positioning shaft into the constraint hole, with an interval of approximately 90°.

[0090] Four limiting blocks 4 are sequentially installed at 45° intervals along the circumference of the flange connection. The second connection structure of the limiting block 4 and the first connection structure of the interlocking part form a beveled wedge tight fit structure.

[0091] Axial limiting: Use matching bolts to tighten the four sets of limiting blocks 4 to both ends of the central positioning shaft. During the bolt tightening process, the limiting blocks 4 generate axial force along the inclined plane, continuously pressing the flanges on both sides, and relying on the wedge force of the inclined plane to achieve flange end face fit.

[0092] Circumferential limiting: Four limiting blocks 4 evenly surround the outer circumference of the flange. The limiting blocks and the interlocking part are concentric and restrict the relative circumferential rotation of the two flanges, completely replacing the circumferential anti-rotation function of the end face teeth and end face keys.

[0093] Compared to end-face teeth, this embodiment has a significantly increased unit transmission surface area, greatly reducing stress concentration.

[0094] The method of using the inclined plane limiting block locking connection structure includes the following steps:

[0095] Step 1, Install the structure:

[0096] First, install the intermediate positioning shaft 5 between flange 1 and flange 2, and adjust the angle of the intermediate positioning shaft 5; then, connect the four sets of 45° limit blocks 4 along the connecting structure 1 of the interlocking part 3, so that the connecting tooth 31 is inserted into the notch 43 and the connecting tooth 42 is inserted into the notch 32.

[0097] Push the limiting block 4 to make the limiting block 4 and the two sides of the engagement part 3 cocircle;

[0098] Install the double-ended stud 6. One end of the double-ended stud 6 passes through the mounting hole 41 and is threaded to the positioning hole 51. The end is locked onto the limit block 4 by the locking nut 61. Tighten the double-ended stud evenly in stages, relying on the inclined surface to self-lock.

[0099] Step 2, disassembly and assembly: After a certain period of use, remove the double-ended studs 6 and take out the limiting blocks 4; loosen the double-ended studs of the four sets of limiting blocks 4 in sequence to release the wedge pressure of the limiting blocks 4, and directly remove the limiting blocks. The two sets of flange one and flange two can be separated along the axial direction of the middle positioning shaft 5 to complete the disassembly.

[0100] Step 3: Inspect the wear condition on both sides of the limiting block 4; when the wear condition of the limiting block 4 does not meet the standard, cut and grind the connecting structure 2 on both sides, so that the connecting structure 2 on both sides shrinks inward along the arc surface;

[0101] Step 4: Reinstall the limiting block 4, push the limiting block 4 into the connecting structure 1 on both sides, so that the two sides abut against the connecting structure 1 and the outer side of the interlocking part 3 of flange 1 and flange 2. Then reinstall the double-ended stud 6 and lock it with the lock nut 61.

[0102] This invention has the following technical advantages:

[0103] a. The structural strength of the parts has been significantly improved;

[0104] This invention eliminates the need for drilling or slotting to remove the base material from the flange body, ensuring that the original wall thickness of the parts is fully preserved without stress concentration gaps. Compared to traditional end face teeth or end face keys, it significantly improves tensile strength, torsional strength, and bearing capacity, and provides stronger support under heavy-load impact conditions, making it less prone to deformation and cracking.

[0105] b. Improved wear resistance can extend the service life of equipment;

[0106] The inclined surfaces that fit together between flange one and flange two are complete and continuous planes, without any toothed grooves or keyways where stress concentration occurs. The entire structure undergoes uniform surface wear-resistant strengthening treatments such as quenching and nitriding. In actual use, the contact surfaces are subjected to uniform stress during operation, which can significantly reduce the probability of local wear, pitting, and scratches, and increase the service life of parts several times under the same working conditions.

[0107] c. Assembly and maintenance efficiency is significantly optimized;

[0108] In this embodiment, the number of fasteners is reduced from multiple sets or even more than 20 sets in the traditional way to 4 sets; the fasteners can use standard parts, which simplifies the installation and disassembly process, shortens the assembly time, and improves the assembly cycle of the production line.

[0109] d. No need to control the diagonal torque of multiple sets of bolts, resulting in better assembly consistency and reduced human error.

[0110] e. Strong operational stability, eliminating vibration and loosening faults;

[0111] Relying on the self-locking of the inclined wedge, there will be no preload decay under the vibration of the equipment itself and external alternating loads. The inclined wedges of the first and second connection structures are always tightly fitted, and there is no relative slippage friction. This avoids faults such as broken teeth, broken keys, abnormal transmission noise and coaxiality misalignment from the root, and greatly reduces the frequency of equipment downtime for maintenance.

[0112] f. Convenient for later maintenance; parts can be repeatedly repaired and reused.

[0113] When the inclined surface of the connecting tooth of the connecting structure 1 is slightly worn, only the inclined surface needs to be repaired as a whole. The total axial length of the part will not be reduced, the overall assembly dimension chain of the machine will not be changed, and it can be directly assembled and used in its original position after repair. The part can be repaired repeatedly, which greatly reduces the cost of spare parts replacement.

[0114] When the outer side of the limiting block 4 is worn, the limiting block 4 is disassembled and the arc-shaped side and the lateral connection structure 2 are ground. Even if the surface size is reduced after grinding, such as the arc-shaped side size is shortened, the installation position of the limiting block is pushed, which does not affect the reinstallation. The whole circle is divided into local inward segmented arc structure.

[0115] This invention can directly replace the original end face tooth or end face key connection structure, adapt to the original structure, has strong versatility for modification, and can be widely used in conveying machinery, heavy metallurgical transmission, machine tool spindles and cable processing equipment and other working conditions.

[0116] Example 2

[0117] like Figure 16 and 17 As shown, another embodiment of the present invention addresses the common failure mode of double-ended studs under heavy loads, impacts, or alternating loads. Under continuous alternating loads and vibrations, even if the stress is below the material's strength limit, cracks may still initiate at stress concentration points, especially when the limiting block and the intermediate positioning shaft are separate and have a long spacing, ultimately leading to fatigue fracture. Therefore, this embodiment is designed so that even if the double-ended stud breaks, the limiting block will not be thrown out of the separation locking connection structure.

[0118] A stepped inner hole 44 is provided on both sides of the limiting block 4, and a insertion hole 33 is provided on both sides of the interlocking part 3.

[0119] An arc-shaped rod 91 is installed inside the stepped inner hole 44, and an inclined surface is provided on the side of the arc-shaped rod 91 facing the locking nut 61. A spring 92 is fitted on the arc-shaped rod 91. A fixing plate 93 is provided at one end of the spring 92, and the fixing plate 93 has a central hole and is fixedly connected to the arc-shaped rod 91. A sealing plate 94 is provided at the other end of the spring 92, and the sealing plate 94 is fitted on the arc-shaped rod 91 and fixedly connected to the stepped inner hole 44. When the arc-shaped rod 91 moves, it causes the fixing plate 93 to compress the spring 92, and the other end of the arc-shaped rod 91 is inserted into the insertion hole 33. An internal thread is provided in the mounting hole 41 and is threadedly connected to one end of the double-ended stud 6. In this way, even if it breaks, the two broken ends of the double-ended stud are threadedly connected to the limiting block and the intermediate positioning shaft, respectively, and the limiting block is connected to the interlocking part through the arc-shaped rod, so that no separation occurs.

[0120] During installation, the beveled surface of the arc-shaped rod faces outwards, thus not obstructing the insertion of the double-ended stud. The stud body presses against the arc-shaped rod, pushing the arc-shaped rod's stepped inner hole to move. The fixing plate and the arc-shaped rod are fixedly connected, causing the spring to press towards the sealing plate. The diameter of the stepped inner hole facing the interlocking part is larger than the diameter facing the mounting hole. When the double-ended stud is inserted, the other end of the pushed arc-shaped rod inserts into the insertion hole, achieving a connection within the interlocking part, thereby achieving a radial connection between the interlocking part and the limiting block.

[0121] Installation method: First, install the fixing plate on the curved plate, then install the spring on the fixing plate and insert it into the inner hole of the step; then install the sealing plate, fixing it into the inner hole of the step, with a central hole for the curved rod to pass through; the inner hole of the step is fixed to the other end of the spring. For removal, directly remove the double-ended stud, insert the end of the curved rod away from the insertion hole into the mounting hole, and detach the other end from the insertion hole, facilitating the disassembly of the limiting block from the locking connection structure.

[0122] This invention utilizes a double-ended stud to compress the arc-shaped rods on both sides. When the double-ended stud is connected to the central positioning shaft, the arc-shaped rods on both sides are pushed into the insertion holes of the engagement part, achieving radial locking. Even in the event of a broken double-ended stud, it is highly likely that the limiting block will not disengage from the engagement part, preventing separation during rotation.

[0123] 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 sloped limiting block locking connection structure, characterized in that, include: Flange 1 (1) and flange 2 (2) are provided with interlocking parts (3) on opposite sides; the interlocking parts (3) are provided with connecting structure 1 on the side; The limiting block (4) has a second connecting structure on its side; the first connecting structure and the second connecting structure are adapted to form a wedge-shaped inclined surface for axial limiting; the limiting block (4) and the biting part (3) are distributed in a circle and connected for radial limiting; the limiting block (4) has a mounting hole (41). The intermediate positioning shaft (5) is located between flange one (1) and flange two (2), and a positioning hole (51) is provided on its surface. The fastening pair passes through the mounting hole (41) and is connected to the positioning hole (51) to constrain the limiting block (4) on the intermediate positioning shaft (5).

2. The inclined plane limiting block locking connection structure according to claim 1, characterized in that, The first connecting structure includes a first connecting tooth (31) and a first notch (32); the second connecting structure includes a second connecting tooth (42) and a second notch (43); when the biting part (3) and the limiting block (4) are connected, the first connecting tooth (31) is adapted to and connected to the second notch (43); the second connecting tooth (42) is adapted to and connected to the first notch (32).

3. The inclined plane limiting block locking connection structure according to claim 2, characterized in that, The connecting teeth 1 (31) and 2 (42) are inclined on the upper and lower surfaces along the axial direction of the intermediate positioning shaft (5).

4. The inclined plane limiting block locking connection structure according to claim 2, characterized in that, The intermediate positioning shaft (5) is separately set from flange one (1) and flange two (2); a constraint hole (8) is provided on the opposite side of flange one (1) and flange two (2), and the constraint hole (8) is adapted to both ends of the intermediate positioning shaft (5).

5. The inclined plane limiting block locking connection structure according to claim 2, characterized in that, The interlocking parts (3) on flange one (1) and flange two (2) are provided with two sets, and when flange one (1) and flange two (2) are installed, the four sets of interlocking parts (3) are arranged in a cross shape; the adjacent interlocking parts (3) are all equipped with limit blocks (4) in a common circle. The limiting block (4) has a second connecting structure on both sides, and the biting part (3) has a first connecting structure on both sides.

6. The inclined plane limiting block locking connection structure according to claim 1, characterized in that, Both the first connecting tooth (31) and the second connecting tooth (42) are provided with at least two sets; The limiting block (4) is arranged in a fan shape, with an installation hole (41) in the middle.

7. The inclined plane limiting block locking connection structure according to claim 1, characterized in that, The limiting block (4) and the flange one (1) or flange two (2) of the non-engaging part (3) are provided with a gap (7).

8. The inclined plane limiting block locking connection structure according to claim 1, characterized in that, The fastening pair includes a double-ended stud (6), the positioning hole (51) is a threaded hole, one end of the double-ended stud (6) passes through the mounting hole (41) and is threadedly connected to the positioning hole (51); the mounting hole (41) is a stepped hole, and the other end of the double-ended stud (6) is fitted with a lock nut (61) and locked in the mounting hole (41).

9. The inclined plane limiting block locking connection structure according to claim 1, characterized in that, A stepped inner hole (44) is provided on both sides of the limiting block (4), and a plug hole (33) is provided on both sides of the interlocking part (3). An arc-shaped rod (91) is installed in the stepped inner hole (44), and an inclined surface is provided on the side of the arc-shaped rod (91) facing the locking nut (61); a spring (92) is fitted on the arc-shaped rod (91); a fixing plate (93) is provided at one end of the spring (92), and the fixing plate (93) has a central hole and is fixedly connected to the arc-shaped rod (91); a sealing plate (94) is provided at the other end of the spring (92), and the sealing plate (94) is fitted on the arc-shaped rod (91) and fixedly connected to the stepped inner hole (44). When the arc-shaped rod (91) moves, it causes the fixing plate (93) to squeeze the spring (92) and the other end of the arc-shaped rod (91) is inserted into the insertion hole (33); an internal thread is provided in the mounting hole (41) and is threadedly connected to one end of the double-ended stud (6).

10. The method of using the inclined plane limiting block locking connection structure, characterized in that, Includes the following steps: Step 1, Install the structure: First, install the intermediate positioning shaft (5) between flange one (1) and flange two (2) and adjust the angle of the intermediate positioning shaft (5); then, connect the second connection structure of the limiting block (4) along the first connection structure of the interlocking part (3) to realize that the first connection tooth (31) is inserted into the second notch (43) and the second connection tooth (42) is inserted into the first notch (32). Push the limiting block (4) to make the limiting block (4) and the two sides of the engagement part (3) cocircle; Install a double-ended stud (6), one end of which passes through the mounting hole (41) and is threaded into the positioning hole (51), and the other end is locked onto the limit block (4) by a lock nut (61); Step 2, disassembly and assembly: After a certain period of use, remove the double-headed stud (6) and take out the limiting block (4). Step 3, check the wear condition on both sides of the limiting block (4); when the wear degree of the limiting block (4) does not meet the standard, cut and grind the connecting structure 2 on both sides, so that the connecting structure 2 on both sides shrinks inward along the arc surface; Step 4, reinstall the limiting block (4), push the limiting block (4) into the connecting structure on both sides, so that the two sides abut against the connecting structure on both sides, the outer side of the engagement part (3) of the flange one (1) and flange two (2), and then reinstall the double-headed stud (6) and lock it with the lock nut (61).

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