High-rigidity rotatable corrugated pipe coupling

Abstract

The utility model discloses a high-rigidity rotatable corrugated pipe coupling which comprises clamping mechanisms and a middle mechanism, and the clamping mechanisms are located at the two ends of the middle mechanism. The middle mechanism comprises a corrugated pipe, a reducing sleeve is arranged at the end of the corrugated pipe, a first buckle, a second buckle and a fastening sleeve are arranged on the reducing sleeve, and one end of the first buckle and one end of the second buckle are matched with the fastening sleeve; the clamping mechanism comprises a clamping sleeve, a flange sleeve and a connecting body, the flange sleeve and the connecting body are both connected with the clamping sleeve, the flange sleeve is located on the inner side of the connecting body in a sleeved mode, a peephole is formed in the connecting body in a penetrating mode, the connecting body is connected with the corrugated pipe, and the connecting body is connected with the corrugated pipe. The other end of the first buckle and the other end of the second buckle are matched with the flange sleeve. By improving the bolts on the clamping sleeves, the coupler can be in a balanced state, and the problems of deflection and vibration of the coupler during high-speed operation are solved.

Description

Technical Field

[0001] This utility model belongs to the field of coupling technology, and in particular relates to a high-rigidity rotatable bellows coupling. Background Technology

[0002] A bellows coupling is a flexible coupling that utilizes the elastic deformation of the bellows metal element to compensate for radial, axial, and angular misalignments of the two mounted shafts, as well as to mitigate impacts and absorb vibrations. Bellows couplings have a greater elastic deformation capacity than diaphragm couplings and greater rigidity than petal-shaped couplings, combining the advantages of both. They are primarily used in CNC milling machines and industrial robots.

[0003] Existing bellows couplings use a single-sided screw locking method during use, resulting in an asymmetrical structure. After the screws are tightened, the coupling experiences deformation within a small area of ​​the bore, which is also asymmetrical. This deformation causes the center of gravity to deviate from the axis of rotation, and the resulting centrifugal force affects the coupling's stability and reduces its maximum speed. Furthermore, since the flange only provides a wrench position in one direction (upper or lower), it cannot be installed inside the turntable flange. The clamping sleeve and bellows are glued together, resulting in a fixed position, which is unsuitable for confined spaces. Additionally, the glued area between the clamping sleeve and the bellows is relatively sealed, making it impossible to monitor the connection in real time.

[0004] For example, Chinese patent CN203730591U discloses a high-torque rigid bellows coupling, which includes a bellows and two clamping sleeves fixedly connected to both ends of the bellows. The bellows has a thin metal wall integrally formed at both ends. The clamping sleeves have a stepped surface formed at their inner ends that can be bonded and fixedly connected to the thin metal wall. The clamping sleeves have a shaft mounting hole at their axial center. A straight groove is also provided on one side of the shaft mounting hole. The clamping sleeves also have an arc groove perpendicular to the straight groove. Locking bolts for locking the clamping sleeves are provided on both sides of the straight groove.

[0005] Therefore, it is necessary to provide a high-rigidity rotatable bellows coupling to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a high-rigidity rotatable bellows coupling, which solves the problems of poor self-balancing effect, fixed operating position, inability to be used after glue separation, and inability to view the internal operating status in real time of existing side-fixed couplings.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A high-rigidity rotatable bellows coupling includes a clamping mechanism and an intermediate mechanism, wherein the clamping mechanism is located at both ends of the intermediate mechanism;

[0009] The intermediate mechanism includes a bellows, and an adapter sleeve is provided at the end of the bellows. The adapter sleeve is provided with a first buckle, a second buckle, and a fastening sleeve. One end of the first buckle and the second buckle are respectively engaged with the fastening sleeve.

[0010] The clamping mechanism includes a clamping sleeve, a flange sleeve, and a connecting body. The flange sleeve and the connecting body are both connected to the clamping sleeve, and the flange sleeve is located inside the connecting body. A viewing hole is provided through the connecting body, and the connecting body is connected to the bellows. The other ends of the first buckle and the second buckle cooperate with the flange sleeve.

[0011] Preferably, a positioning ring is fixedly provided at the end of the corrugated pipe, and a plurality of mounting grooves and positioning grooves are alternately provided on the positioning ring, and the adapter sleeve is provided in each mounting groove.

[0012] Preferably, both the first and second buckles are provided with connecting blocks, and the adapter sleeve is provided with connecting grooves, with the connecting blocks matching the connecting grooves.

[0013] Preferably, the number of the first buckle and the second buckle are the same, the sum of the number of the first buckle and the second buckle is equal to the number of the adapter sleeve, and the first buckles are spaced apart on the adapter sleeve, while the second buckles are disposed on the adapter sleeve adjacent to the first buckles.

[0014] Preferably, both the first and second buckles have a first locking tooth at one end and a second locking tooth at the other end. The inner wall of the fastening sleeve has a transmission tooth, and the first locking tooth meshes with the transmission tooth. The flange sleeve has an annular tooth, and the second locking tooth meshes with the annular tooth.

[0015] Preferably, a plurality of positioning blocks are fixedly provided on the connecting body, and the positions of the plurality of positioning blocks correspond one-to-one with the positions of the positioning grooves.

[0016] Preferably, the fastening sleeve and the adapter sleeve are fixed to the bellows by diamond-shaped pins and thin nuts, the flange sleeve and the clamping sleeve are connected by a first pin, and the clamping sleeve and the connecting body are connected by fastening bolts.

[0017] Preferably, the clamping sleeve is further provided with a fastening groove and a fastening hole, and a side fastening screw is provided in the fastening hole.

[0018] The advantages and positive effects of this utility model are:

[0019] 1. This utility model has two centrally symmetrical side fixing screws in the vertical direction of the clamping sleeve. Tightening the side fixing screws causes the clamping sleeve hole diameter to undergo symmetrical deformation within a 360° range. The center of mass of the coupling is located on the same straight line, and the coupling is in a balanced state, which effectively solves the problem of coupling sway and vibration when the coupling is running at high speed.

[0020] 2. This utility model features a circumferential array of multiple inspection holes on the connecting body, with the inspection holes at a 30° angle to the direction of the coupling. This allows operators to easily observe and understand the working status of the internal parts of the coupling without disassembling it.

[0021] 3. This utility model achieves the relative setting of the side fastening screws on both sides of the coupling by disassembling and assembling the fastening screws and the first pin, and then removing the fastening screws, the first pin, the clamping sleeve and the connecting body in sequence. This ensures the axial rigidity of the coupling and makes the installation of the coupling more convenient.

[0022] 4. This utility model uses the positioning block on the connecting body to cooperate with the U-shaped positioning groove on the positioning ring at the end of the bellows. The adapter sleeve and the bellows adopt the same cooperation method, which effectively solves the problem that the coupling cannot transmit torque normally after the glue between the clamping mechanism and the bellows of the traditional coupling fails. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is an exploded view of this utility model;

[0026] Figure 3 This is a schematic diagram of the connection structure between the first and second snap fasteners, the fastening sleeve, and the flange sleeve of this utility model;

[0027] Figure 4 This is a schematic diagram showing the relative positions of the adapter sleeve, fastening sleeve, first buckle, and second buckle of this utility model;

[0028] Figure 5 This is a schematic diagram of the assembly structure of the fastening sleeve, connecting body and flange sleeve of this utility model;

[0029] Figure 6This is a schematic diagram showing the relative positions of the flange sleeve and the bellows of this utility model.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1. Clamping mechanism; 101. Fastening bolt; 102. Side fastening screw; 103. Clamping sleeve; 104. Connecting body; 105. Flange sleeve; 106. First pin; 107. Positioning block; 108. Fastening hole; 109. Fastening groove; 110. Inspection hole; 2. Intermediate mechanism; 201. Diamond pin; 202. First snap; 203. Second snap; 204. Fastening sleeve; 205. Adapter sleeve; 206. Positioning pin; 207. Thin nut; 208. Bellows; 209. Connecting groove; 210. Connecting block; 211. Mounting groove; 212. Positioning groove; 213. Positioning ring; 214. First locking tooth; 215. Second locking tooth; 216. Transmission tooth; 219. Ring tooth. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The present invention will be further described below with reference to the accompanying drawings:

[0035] like Figure 1 and Figure 2As shown, a high-rigidity rotatable bellows coupling includes a clamping mechanism 1 and an intermediate mechanism 2, with the clamping mechanism 1 located at both ends of the intermediate mechanism 2.

[0036] The intermediate mechanism 2 includes a bellows 208, and an adapter sleeve 205 is provided at the end of the bellows 208. The adapter sleeve 205 is provided with a first buckle 202, a second buckle 203 and a fastening sleeve 204. One end of the first buckle 202 and the second buckle 203 are engaged with the fastening sleeve 204.

[0037] The clamping mechanism 1 includes a clamping sleeve 103, a flange sleeve 105, and a connecting body 104. Both the flange sleeve 105 and the connecting body 104 are connected to the clamping sleeve 103, and the flange sleeve 105 is located inside the connecting body 104. A viewing hole 110 is provided through the connecting body 104, and the connecting body 104 is connected to the bellows 208. The other ends of the first buckle 202 and the second buckle 203 cooperate with the flange sleeve 105.

[0038] Specifically, a positioning ring 213 is fixedly provided at the end of the corrugated pipe 208. Several mounting grooves 211 and positioning grooves 212 are alternately provided on the positioning ring 213. The positioning grooves 212 are U-shaped. An adapter sleeve 205 is provided in each mounting groove 211. A connecting block 210 is provided on the first buckle 202 and the second buckle 203.

[0039] like Figure 4 As shown, the adapter sleeve 205 is provided with a connecting groove 209, and the connecting block 210 matches the connecting groove 209. The number of first buckles 202 and second buckles 203 is the same, and the sum of the number of first buckles 202 and second buckles 203 is equal to the number of adapter sleeves 205. The first buckles 202 are spaced apart on the adapter sleeve 205, and the second buckles 203 are provided on the adapter sleeve 205 adjacent to the first buckles 202. One end of the first buckles 202 and the second buckles 203 are provided with a first locking tooth 214, and the other end is provided with a second locking tooth 215.

[0040] like Figure 3 and Figure 4As shown, the inner wall of the fastening sleeve 204 is provided with a transmission tooth 216, and the first locking tooth 214 meshes with the transmission tooth 216. The flange sleeve 105 is provided with a ring tooth 219, and the second locking tooth 215 meshes with the ring tooth 219. Several positioning blocks 107 are fixedly provided on the connecting body 104, and the positions of the several positioning blocks 107 correspond one-to-one with the positioning grooves 212. The fastening sleeve 204 and the adapter sleeve 205 are fixed on the bellows 208 by diamond pins 201 and thin nuts 207. The flange sleeve 105 and the clamping sleeve 103 are connected by the first pin 106. The clamping sleeve 103 and the connecting body 104 are connected by fastening bolts 101. The clamping sleeve 103 is also provided with a fastening groove 109 and a fastening hole 108. A side fastening screw 102 is provided in the fastening hole 108. A viewing hole 110 is also provided through the side wall of the connecting body 104.

[0041] In this embodiment, the clamping sleeve 103 is provided with two centrally symmetrical side-fixing screws 102 in the vertical direction. Tightening the side-fixing screws 102 reduces the width of the fastening groove 109 on the clamping sleeve 103, and the diameter of the clamping sleeve 103 will undergo symmetrical deformation within a 360° range. In contrast, the traditional single side-fixing structure is asymmetrical, with the center of mass deviating from the center line. During high-speed operation, centrifugal force causes the coupling to wobble and vibrate. The present invention makes the clamping sleeve 103 symmetrical, with the center of mass of the clamping sleeve 103 located on the same straight line. The coupling is in a balanced state, effectively solving the problem of coupling wobble and vibration during high-speed operation.

[0042] like Figure 5As shown, a circular hole is provided on one end face of the clamping sleeve 103. The flange sleeve 105 is fitted with the shaft hole of the connecting body 104 with a small clearance. The flange sleeve 105 is tangent to the conical hole of the clamping sleeve 103. Multiple first pins 106 are arranged in a circumferential array on the flange sleeve 105, which connect the flange sleeve 105 and the clamping sleeve 103 through the first pins 106. Multiple fastening bolts 101 are provided on the end face of the clamping sleeve 103, which connect the clamping sleeve 103 and the connecting body 104 through the fastening bolts 101. Multiple viewing holes 110 are arranged in a circumferential array on the connecting body 104. The viewing holes 110 are at a 30° angle to the direction of the coupling, allowing the operator to observe and control the working status of the internal parts of the coupling without disassembling the coupling. Multiple adapter sleeves 205 are provided in the groove inside the bellows 208. Multiple thin nuts 207 are arranged in a circumferential array on the end face of the bellows 208. A diamond-shaped pin 20 is provided in the middle of the adapter sleeve 205. 1. The adapter sleeve 205 and the bellows 208 are positioned and connected by the diamond-shaped pin 201 and the thin nut 207, and the adapter sleeve 205 and the bellows 208 are glued together. The end face of the adapter sleeve 205 is provided with a fastening sleeve 204. The adapter sleeve 205 and the fastening sleeve 204 are connected by the positioning pin 206. The first buckle 202 and the second buckle 203 are installed on the adapter sleeve 205 through the cooperation of the connecting block 210 and the connecting groove 209. The first buckle 202 and the second buckle 203 have an axially symmetrical structure. The second teeth 215 on the first buckle 202 and the second buckle 203 mesh with the transmission teeth 216 on the fastening sleeve 204. The first teeth 214 on the first buckle 202 and the second buckle 203 mesh with the ring teeth 219 on the flange sleeve 105. The clamping sleeve 103 and the adapter sleeve 205 restrict the axial movement of the flange sleeve 105.

[0043] like Figure 6 As shown, a positioning ring 213 is installed at the end of the bellows 208. The positioning groove 212 on the positioning ring 213 is U-shaped. The positioning block 107 on the connecting body 104 cooperates with the U-shaped positioning groove 212. When the shaft transmits power and torque to the clamping sleeve 103, the clamping sleeve 103 transmits kinetic energy to the connecting body 104 and the flange sleeve 105 through the fastening screw and the first pin 106. The flange sleeve 105 transmits kinetic energy to the fastening sleeve 204 and the adapter sleeve 205 through the first buckle 202 and the second buckle 203. The adapter sleeve 205 is also in the mounting groove 211 on the positioning ring 213 located between two adjacent U-shaped positioning grooves 212. At the same time, the adapter sleeve 205 and the connecting body 104 transmit kinetic energy to the bellows 208. The bellows 208 transmits kinetic energy to the clamping sleeve 103 at the other end in the opposite way, completing the kinetic energy transmission process. This effectively solves the problem of the coupling being unable to transmit torque after the glue between the clamping mechanism 1 and the bellows 208 fails.

[0044] When the installation position of the coupling side fastening screw 102 needs to be adjusted, the fastening screw and the first pin 106 should be loosened, and the fastening screw, the first pin 106, the clamping sleeve 103 and the connecting body 104 should be removed in sequence. Then, push and rotate the flange sleeve 105 towards the bellows 208. After determining the angle, pull the flange sleeve 105 back. Assemble the coupling in the reverse order of disassembly to complete the operation of adjusting the installation angle of the coupling.

[0045] The present invention achieves this through the above improvements.

[0046] Two centrally symmetrical side-fixing screws 102 are provided in the vertical direction of the clamping sleeve 103. Tightening the side-fixing screws 102 causes the diameter of the clamping sleeve 103 to undergo symmetrical deformation within a 360° range. The center of mass of the coupling is located on the same straight line, and the coupling is in a balanced state, which effectively solves the problem of coupling sway and vibration when the coupling is running at high speed.

[0047] Multiple viewing holes 110 are arranged in a circular array on the connector 104. The viewing holes 110 are at a 30° angle to the direction of the coupling. Without disassembling the coupling, the operator can easily observe and understand the working status of the internal parts of the coupling.

[0048] By disassembling and assembling the fastening screws and the first pin 106, and then removing the fastening screws, the first pin 106, the clamping sleeve 103 and the connecting body 104 in sequence, the relative setting of the side fastening screws 102 on both sides of the coupling can be completed under limited installation space, ensuring the axial rigidity of the coupling and making the installation conditions of the coupling more convenient.

[0049] By engaging the positioning block 107 on the connector 104 with the U-shaped positioning groove 212 on the positioning ring 213 at the end of the bellows 208, and by using the same engagement method between the adapter sleeve 205 and the bellows 208, the problem of the coupling being unable to transmit torque normally after the glue between the clamping mechanism 1 and the bellows 208 fails is effectively solved.

[0050] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A high-rigidity rotatable bellows coupling, characterized in that: It includes a clamping mechanism (1) and an intermediate mechanism (2), wherein the clamping mechanism (1) is located at both ends of the intermediate mechanism (2); The intermediate mechanism (2) includes a bellows (208), and an adapter sleeve (205) is provided at the end of the bellows (208). The adapter sleeve (205) is provided with a first buckle (202), a second buckle (203) and a fastening sleeve (204). One end of the first buckle (202) and the second buckle (203) are respectively engaged with the fastening sleeve (204). The clamping mechanism (1) includes a clamping sleeve (103), a flange sleeve (105), and a connecting body (104). The flange sleeve (105) and the connecting body (104) are both connected to the clamping sleeve (103), and the flange sleeve (105) is located inside the connecting body (104). A viewing hole (110) is provided through the connecting body (104), and the connecting body (104) is connected to the bellows (208). The other ends of the first buckle (202) and the second buckle (203) cooperate with the flange sleeve (105).

2. The high-rigidity rotatable bellows coupling according to claim 1, characterized in that: The end of the corrugated pipe (208) is fixedly provided with a positioning ring (213), and a plurality of mounting grooves (211) and positioning grooves (212) are alternately provided on the positioning ring (213), and the adapter sleeve (205) is provided in each mounting groove (211).

3. A high-rigidity rotatable bellows coupling according to claim 2, characterized in that: Both the first buckle (202) and the second buckle (203) are provided with connecting blocks (210), and the adapter sleeve (205) is provided with connecting grooves (209). The connecting blocks (210) are matched with the connecting grooves (209).

4. A high-rigidity rotatable bellows coupling according to claim 3, characterized in that: The number of the first buckle (202) and the second buckle (203) are the same, and the sum of the number of the first buckle (202) and the second buckle (203) is equal to the number of the adapter sleeve (205). The first buckles (202) are spaced apart on the adapter sleeve (205), and the second buckles (203) are disposed on the adapter sleeve (205) adjacent to the first buckle (202).

5. A high-rigidity rotatable bellows coupling according to claim 2, characterized in that: The first buckle (202) and the second buckle (203) are each provided with a first locking tooth (214) at one end and a second locking tooth (215) at the other end. The inner wall of the fastening sleeve (204) is provided with a transmission tooth (216). The first locking tooth (214) meshes with the transmission tooth (216). The flange sleeve (105) is provided with an annular tooth (219). The second locking tooth (215) meshes with the annular tooth (219).

6. A high-rigidity rotatable bellows coupling according to claim 2, characterized in that: A plurality of positioning blocks (107) are fixedly provided on the connector (104), and the positions of the plurality of positioning blocks (107) correspond one-to-one with the positions of the positioning grooves (212).

7. A high-rigidity rotatable bellows coupling according to claim 2, characterized in that: The fastening sleeve (204) and the adapter sleeve (205) are fixed to the bellows (208) by diamond pins (201) and thin nuts (207). The flange sleeve (105) and the clamping sleeve (103) are connected by a first pin (106). The clamping sleeve (103) and the connecting body (104) are connected by fastening bolts (101).

8. A high-rigidity rotatable bellows coupling according to claim 1, characterized in that: The clamping sleeve (103) is also provided with a fastening groove (109) and a fastening hole (108), and a side fastening screw (102) is provided in the fastening hole (108).

Images