Flexible drive rotating device

Abstract

This utility model discloses a flexible drive rotary device, including a telescopic shaft, a universal joint, and a compression spring. The telescopic shaft achieves axial extension and contraction through double guide sleeves to compensate for axial deviation of the rotating component. The universal joint achieves multi-directional deflection through a ball joint structure to eliminate misalignment errors. The compression spring provides preload and drives the universal joint to reset, ensuring measurement repeatability. The rotating connection design between the bearing housing connecting cylinder and the external component absorbs mounting surface tilt, while bolt fixing ensures stable transmission of drive torque. This device solves the measurement errors and vibration jamming problems caused by axial deviation in traditional rigid drive methods. It has advantages such as adaptive installation error, high torque transmission stability, low maintenance requirements, and modular adaptability, making it suitable for precision measurement, automated machining, and other scenarios with stringent coaxiality requirements.

Description

Technical Field

[0001] This utility model relates to the field of flexible drive rotation device technology, specifically a flexible drive rotation device. Background Technology

[0002] In industrial production, the quality inspection of rotating parts (such as runout measurement and torque testing) is a crucial step in ensuring product performance. Traditional testing equipment typically employs a rigid drive method, where the drive head is directly connected to the front of the bearing housing to force the rotating part to rotate. However, due to factors such as product manufacturing tolerances, assembly errors, and installation environment, the actual rotation center of the rotating part often deviates from the theoretical axis of the drive system; for example, the coaxiality problem in automotive drive shaft runout testing.

[0003] This misalignment of the axes can lead to the following problems: rigid connections cannot compensate for axis deviation, and rotating parts will experience periodic swaying when rotating at high speeds or under stress, causing the data collected by the measuring sensors to contain a large number of interference signals, which cannot truly reflect the dynamic characteristics of the product; axis deviation may cause abnormal contact between the rotating parts and the detection mechanism (such as probes, sensor supports, etc.), which may cause measurement interruption or damage to precision detection components; under traditional drive methods, the unstable motion of the rotating parts will cause the measured values ​​of parameters such as torque and runout to deviate from the true values, ultimately affecting the product quality judgment and causing the risk of misjudgment.

[0004] A flexible drive rotation device is proposed to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a flexible drive rotation device to solve the problem mentioned in the background art, where the actual rotation center of the rotating part often deviates from the theoretical axis of the drive system due to factors such as product manufacturing tolerances, assembly errors, and installation environment, which seriously affects the detection data and stability, and may even lead to damage to the parts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flexible drive rotation device, including a bearing seat connecting cylinder;

[0007] The bearing housing connecting cylinder is provided with a telescopic shaft inside, and a universal joint is provided below the telescopic shaft. A compression spring is sleeved on the outside of the universal joint. Both ends of the universal joint are equipped with docking parts, and a drive head connector is provided below the docking parts.

[0008] The bearing housing connecting cylinder includes a first circular cavity, a second circular cavity, and a third circular cavity sequentially formed inside the bearing housing connecting cylinder from top to bottom. A first guide sleeve is fixedly connected inside the first circular cavity, and a second guide sleeve is fixedly connected inside the third circular cavity. A first annular groove is formed in the middle of the outer side of the bearing housing connecting cylinder. A first pin hole is formed inside the first annular groove. A first rubber ring is nested inside the first annular groove, and a first positioning pin is connected through the first pin hole.

[0009] The telescopic shaft has a clearance groove in the middle, a pad is fixedly connected to the lower middle part of the telescopic shaft, and a first connection hole is provided at the bottom of the telescopic shaft.

[0010] The mating part includes a fixing ring that is fixedly connected to both ends of the universal joint. The fixing ring has a second annular groove in the middle of its outer side, an insertion hole in the middle of its middle side, and a second pin hole in the outer side of its outer side. The second pin hole coincides with the position of the second annular groove. A second positioning pin is connected through the inside of the second pin hole. A second rubber ring is nested inside the second annular groove.

[0011] The drive head connector includes a fixing plate, a docking post is fixedly connected to the top of the fixing plate, a third pin hole is opened on the top of the docking post, and a connecting block is fixedly connected to the bottom of the fixing plate.

[0012] Preferably, the telescopic shaft slides through the first guide sleeve, the pad sleeve is slidably connected to the second guide sleeve, the first positioning pin moves through the clearance groove, and both the first guide sleeve and the second guide sleeve are made of self-lubricating material.

[0013] Preferably, the bottom end of the telescopic shaft is inserted into the upper insertion hole, and a second positioning pin is movably inserted into the first connecting hole.

[0014] Preferably, the mating post is inserted into the insertion hole located below, and another second positioning pin is movably inserted into the third pin hole.

[0015] Preferably, the top end of the compression spring is fixedly connected to the bottom end of the bearing seat connecting cylinder, the bottom end of the compression spring is fixedly connected to the top surface of the fixing plate, and the mating part is located inside the compression spring.

[0016] Preferably, the upper and lower second pin holes are distributed in an alternating pattern.

[0017] Preferably, the outer diameter of the gasket is larger than the inner diameter of the second circular cavity, the bearing seat connecting cylinder is rotatably connected to the external bearing seat connecting seat, and is fixed to the external drive device by bolts.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this flexible drive rotation device overcomes the limitations of traditional drive methods, avoids the influence of factors such as product manufacturing tolerances, assembly errors, and installation environment, and ultimately the actual rotation center of the rotating part is difficult to be affected by the theoretical axis of the drive system. The specific details are as follows:

[0019] 1. Flexible docking is achieved through a universal joint, which can adapt to the axial deviation between the product's rotation center and the drive center, completely solving the problems of rotating part swaying and measuring mechanism jamming caused by traditional rigid drives. Combined with the automatic compensation function of the telescopic shaft, docking stability is ensured. The self-lubricating guide sleeve significantly reduces friction loss, extends equipment life, and ensures smooth movement. The modular drive head design supports quick replacement and adapts to diverse measurement needs. The return-to-center function of the compression spring and the adaptive deflection capability of the universal joint together ensure the continuity of torque transmission and measurement repeatability. This device overcomes the limitations of traditional drive methods in its structural design, avoiding the influence of product manufacturing tolerances, assembly errors, and installation environment factors. Ultimately, the actual rotation center of the rotating part is difficult to be affected by the theoretical axis of the drive system. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0022] Figure 3 This is a three-dimensional cross-sectional structural diagram of the bearing housing connecting cylinder;

[0023] Figure 4 for Figure 3 A schematic diagram of the exploded structure;

[0024] Figure 5 This is a schematic diagram of the installation structure of the universal joint and the docking part.

[0025] In the figure: 1. Bearing housing connecting cylinder; 101. First circular cavity; 102. Second circular cavity; 103. Third circular cavity; 104. First guide sleeve; 105. Second guide sleeve; 106. First annular groove; 107. First pin hole; 108. First positioning pin; 109. First rubber ring; 2. Telescopic shaft; 201. Alternating groove; 202. Gasket; 203. First connecting hole; 3. Universal joint; 4. Connecting part; 401. Fixing ring; 402. Second annular groove; 403. Second positioning pin; 404. Second rubber ring; 405. Insertion hole; 406. Second pin hole; 5. Compression spring; 6. Drive head connector; 601. Fixing plate; 602. Connecting post; 603. Third pin hole; 604. Connecting block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 The present invention provides a technical solution: a flexible drive rotation device, including a bearing seat connecting cylinder 1;

[0028] The bearing housing connecting cylinder 1 houses a telescopic shaft 2, below which is a universal joint 3. A compression spring 5 is fitted around the universal joint 3. Both ends of the universal joint 3 have mating parts 4, and a drive head connector 6 is located below the mating parts 4. The telescopic shaft 2 achieves axial extension and retraction by sliding through the first guide sleeve 104 and the second guide sleeve 105, compensating for length errors caused by the axial deviation of the rotating component. The universal joint 3 achieves multi-directional deflection through a ball joint structure, eliminating the influence of misalignment between the rotation center and the drive center. The compression spring 5 provides axial preload, driving the universal joint 3 to return to its center position after operation. The mating parts 4 connect the universal joint 3 and the drive head connector 6 through a retaining ring 401, transmitting torque and maintaining connection stability. This design achieves flexible drive through the coordinated action of the telescopic shaft 2 and the universal joint 3, solving the shaking and jamming problems caused by traditional rigid connections. Simultaneously, the centering function of the compression spring 5 ensures measurement repeatability and prevents component misalignment after long-term use.

[0029] The bearing housing connecting cylinder 1 includes a first circular cavity 101, a second circular cavity 102, and a third circular cavity 103 sequentially formed inside the bearing housing connecting cylinder 1 from top to bottom. A first guide sleeve 104 is fixedly connected inside the first circular cavity 101, and a second guide sleeve 105 is fixedly connected inside the third circular cavity 103. A first annular groove 106 is formed in the middle of the outer side of the bearing housing connecting cylinder 1. A first pin hole 107 is formed inside the first annular groove 106. A first rubber ring 109 is nested inside the first annular groove 106, and a first positioning pin 108 is connected through the first pin hole 107.

[0030] The telescopic shaft 2 has a relief groove 201 in the middle, a pad 202 is fixedly connected to the lower middle part of the telescopic shaft 2, and a first connecting hole 203 is opened at the bottom of the telescopic shaft 2. The relief groove 201 and the first positioning pin 108 together realize the axial limiting and anti-rotation functions, simplifying the structure. The pad 202 enhances the end rigidity and avoids deformation of the telescopic shaft 2.

[0031] The docking part 4 includes a fixing ring 401 fixedly connected to both ends of the universal joint 3. The fixing ring 401 has a second annular groove 402 in the middle of its outer side, an insertion hole 405 in the middle of its middle, and a second pin hole 406 in the outer side of its outer side. The second pin hole 406 coincides with the position of the second annular groove 402. A second positioning pin 403 is connected through the second pin hole 406. A second rubber ring 404 is nested inside the second annular groove 402. All the rubber rings are designed to prevent the positioning pin from coming out of the pin hole, ensuring a stable connection. Furthermore, the positioning pin can be quickly disassembled after the rubber rings are removed with tools.

[0032] The telescopic shaft 2 has a relief groove 201 in the middle, a pad 202 is fixedly connected to the lower middle part of the telescopic shaft 2, and a first connecting hole 203 is provided at the bottom of the telescopic shaft 2.

[0033] The drive head connector 6 includes a fixing plate 601, a docking post 602 is fixedly connected to the top of the fixing plate 601, a third pin hole 603 is opened on the top of the docking post 602, and a connecting block 604 is fixedly connected to the bottom of the fixing plate 601.

[0034] The telescopic shaft 2 slides through the first guide sleeve 104, the pad 202 is slidably connected to the second guide sleeve 105, and the first positioning pin 108 moves through the relief groove 201. Both the first guide sleeve 104 and the second guide sleeve 105 are made of self-lubricating material. The self-lubricating guide sleeves 104 and 105 reduce friction and do not require additional lubrication. The first positioning pin 108 cooperates with the relief groove 201 to limit the stroke of the telescopic shaft 2. The self-lubricating material reduces the frequency of maintenance, provides high guiding accuracy, and is suitable for precision measurement scenarios.

[0035] The bottom end of the telescopic shaft 2 is inserted into the upper insertion hole 405, and a second positioning pin 403 is movably inserted into the first connecting hole 203.

[0036] The docking post 602 is inserted into the lower insertion hole 405, and the other second positioning pin 403 is simultaneously inserted into the third pin hole 603 and the lower second pin hole 406; the drive head connector 6 is inserted into the lower fixing ring 401 through the docking post 602; the second positioning pin 403 passes through both the third pin hole 603 and the lower second pin hole 406 to achieve double fixation; the modular drive head design supports quick replacement, and the double positioning pins improve connection reliability.

[0037] The top end of the compression spring 5 is fixedly connected to the bottom end of the bearing housing connecting cylinder 1, and the bottom end of the compression spring 5 is fixedly connected to the top surface of the fixing plate 601. The mating part 4 is located inside the compression spring 5. The centering function of the compression spring 5 ensures the repeatability of the device and facilitates subsequent use.

[0038] The two second pin holes, 406, are intersected; the intersecting positioning enhances torsional stiffness and improves connection stability in high torque transmission scenarios.

[0039] The outer diameter of the bushing 202 is larger than the inner diameter of the second circular cavity 102. The bearing housing connecting cylinder 1 is connected to the external bearing housing connecting seat by bolts. The bearing housing connecting cylinder 1 and the external bearing housing connecting seat are connected by a rotating pair (such as shaft hole fit plus bearing), which allows the bearing housing connecting cylinder 1 to rotate under the drive of the external drive device. The bearing housing connecting cylinder 1 is rigidly connected to the external drive device (such as motor, reducer) by bolts.

[0040] Working principle: Before using this flexible drive rotation device, it is necessary to check the overall condition of the device to ensure that it can operate normally. Figure 1 - Figure 5 As shown, in the non-working state, the compression spring 5 maintains its natural length, the universal joint 3 is in the center position, and the telescopic shaft 2 is precisely positioned by the first guide sleeve 104 and the second guide sleeve 105. When it is necessary to dock rotating parts, the universal joint 3 can adapt to the axial deviation between the product's rotation center and the drive center, and achieve flexible docking through multi-directional deflection, avoiding the jamming or shaking caused by traditional rigid connections.

[0041] During the docking process, if there is a difference in axial length, the telescopic shaft 2 will extend and retract under the guidance of the self-lubricating guide sleeve 105 to compensate for the length error and ensure stable contact between the drive head joint 6 and the rotating part. Power is transmitted to the telescopic shaft 2 through the bearing housing connecting cylinder 1, and then to the drive head joint 6 through the universal joint 3 and the docking part 4 to drive the rotating part to work.

[0042] During operation, if the position or direction of the rotating parts changes, the universal joint 3 can automatically deflect to adapt to load changes, ensuring continuous and stable torque transmission. After the operation is completed, the compression spring 5 drives the universal joint 3 back to center through restoring force, thereby resetting all components and preparing for the next measurement.

[0043] After removing the second rubber ring 404 using tools, the second positioning pin 403 can be quickly removed, allowing for quick replacement of drive head connectors 6 of different specifications to meet diverse measurement needs.

[0044] 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 flexible drive rotation device, including a bearing housing connecting cylinder (1); characterized in that Also includes: The bearing housing connecting cylinder (1) is provided with a telescopic shaft (2), and a universal joint (3) is provided below the telescopic shaft (2). A compression spring (5) is sleeved on the outside of the universal joint (3). Both ends of the universal joint (3) are equipped with docking parts (4), and a drive head connector (6) is provided below the docking parts (4). The bearing housing connecting cylinder (1) includes a first circular cavity (101), a second circular cavity (102), and a third circular cavity (103) sequentially opened from top to bottom inside the bearing housing connecting cylinder (1). A first guide sleeve (104) is fixedly connected inside the first circular cavity (101), and a second guide sleeve (105) is fixedly connected inside the third circular cavity (103). A first annular groove (106) is opened in the middle of the outer side of the bearing housing connecting cylinder (1). A first pin hole (107) is opened inside the first annular groove (106). A first rubber ring (109) is nested inside the first annular groove (106), and a first positioning pin (108) is connected through the first pin hole (107). The telescopic shaft (2) has a relief groove (201) in the middle, a pad (202) is fixedly connected to the lower middle part of the telescopic shaft (2), and a first connecting hole (203) is provided at the bottom of the telescopic shaft (2). The docking part (4) includes a fixing ring (401) fixedly connected to both ends of the universal joint (3). The fixing ring (401) has a second ring groove (402) in the middle of its outer side, a insertion hole (405) in the middle of its middle side, a second pin hole (406) in the outer side of its fixing ring (401), the second pin hole (406) and the second ring groove (402) are aligned, a second positioning pin (403) is connected through the inside of the second pin hole (406), and a second rubber ring (404) is nested inside the second ring groove (402). The drive head connector (6) includes a fixing plate (601), a docking post (602) is fixedly connected to the top of the fixing plate (601), a third pin hole (603) is opened on the top of the docking post (602), and a connecting block (604) is fixedly connected to the bottom of the fixing plate (601).

2. The flexible drive rotation device of claim 1, wherein: The telescopic shaft (2) slides through the first guide sleeve (104), the pad sleeve (202) is slidably connected to the second guide sleeve (105), the first positioning pin (108) moves through the clearance groove (201), and both the first guide sleeve (104) and the second guide sleeve (105) are self-lubricating materials.

3. The flexible drive rotation device of claim 1, wherein: The bottom end of the telescopic shaft (2) is inserted into the upper insertion hole (405), and a second positioning pin (403) is movably inserted into the first connecting hole (203).

4. The flexible drive rotation device of claim 1, wherein: The docking post (602) is inserted into the insertion hole (405) located below, and another second positioning pin (403) is movably inserted into the third pin hole (603).

5. The flexible drive rotation device according to claim 1, characterized in that: The top end of the compression spring (5) is fixedly connected to the bottom end of the bearing seat connecting cylinder (1), the bottom end of the compression spring (5) is fixedly connected to the top surface of the fixing plate (601), and the docking part (4) is located inside the compression spring (5).

6. The flexible drive rotation device according to claim 1, characterized in that: The two second pin holes (406) are distributed in an alternating pattern.

7. The flexible drive rotation device according to claim 1, characterized in that: The outer diameter of the pad (202) is larger than the inner diameter of the second circular cavity (102). The bearing seat connecting cylinder (1) is rotatably connected through the external bearing seat connecting seat and fixed to the external drive device by bolts.

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