Unidirectional bearing torque detection device

Abstract

The utility model discloses a one-way bearing torque detection device, which comprises an outer ring fixing assembly which is sleeved outside a one-way bearing and is fixed with the periphery of the one-way bearing, and an inner ring fixing assembly which is inserted into the one-way bearing and is fixed with the inner periphery of the one-way bearing, a detection station used for arranging a one-way bearing is formed on the outer ring fixing assembly. According to the detection equipment provided by the utility model, during the detection work, a user only needs to arrange the one-way bearing at a detection station, the outer circumference of the bearing can be quickly locked through the outer ring fixing assembly, the inner circumference of the bearing can be quickly locked through the inner ring fixing assembly and the lifting assembly, and then the torsion driving assembly is used for applying rotation for detection; each component structure is reasonable in action arrangement, the detection accuracy is effectively improved, the operation during detection is effectively simplified, the one-way bearing can be rapidly taken and placed, the efficiency is effectively improved, and the requirements of large-scale detection work can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of torque detection and relates to a torque detection device for a one-way bearing. Background Art

[0002] One-way bearings are widely used in industrial equipment. Due to their characteristic of being able to rotate freely in one direction and being locked in the other direction, their production and processing technology requirements are relatively high, and strict quality inspection is required before leaving the factory to ensure the pass rate.

[0003] For the quality inspection of one-way bearings, rotation detection is the most direct detection method. By analyzing the torque and angle during rotation, it is possible to determine whether it is a qualified product. However, there are various types of unqualified situations for one-way bearings, such as no spring, reverse installation of special-shaped parts, fixing that should be pressed into the spring hole, over-tolerance of the reverse stop angle, etc. The differences between various unqualified situations and qualified products can be very subtle. Under the current still mainstream manual detection method, affected by the upper limit of the accuracy of manual operation, there will be a relatively vague judgment on the rotation torque and rotation angle, resulting in a low detection accuracy. Even with the fixation of mechanical equipment, for example, in the invention patent CN108871637B, a reverse torque detection device and a reverse torque detection method for a one-way bearing, although it discloses a stable fixation method for a one-way bearing, enabling more accurate measurement of torque and angle, the complex setting structure and operation of the one-way bearing disclosed in it have the problem of low detection efficiency and cannot meet the detection requirements for a large number of products. Content of the Utility Model

[0004] The utility model aims to overcome the deficiencies of the prior art and provides a torque detection device for a one-way bearing.

[0005] In order to achieve the above object, the utility model adopts the following technical solutions:

[0006] A torque detection device for a one-way bearing includes an outer ring fixing component for sleeving outside the one-way bearing and fixing with the outer circumference of the one-way bearing, and an inner ring fixing component for passing through the one-way bearing and fixing with the inner circumference of the one-way bearing. A detection station for setting the one-way bearing is formed on the outer ring fixing component; it also includes a lifting component for driving the inner ring fixing component to move closer to / away from the outer ring fixing component, and a torque driving component for driving the inner ring fixing component to rotate relative to the outer ring fixing component.

[0007] Further, the outer ring fixing component includes an inner lower clamping die, the inner circumference of the inner lower clamping die forms the detection station, the inner circumference of the detection station is tightly fitted with the outer circumference of the one-way bearing, the inner ring fixing component includes an upper inner chuck, and during the action of the lifting component driving the upper inner chuck to approach the one-way bearing, the outer circumference of the upper inner chuck is tightly fitted with the inner circumference of the one-way bearing.

[0008] Further, the outer ring fixing component further includes an outer lower clamping die and a lower acting cylinder. The inner lower clamping die is coaxially disposed within the outer lower clamping die. A plurality of inward elastic parts that can be bent and deformed in the radial direction are circumferentially arranged on the inner lower clamping die. The inner circumference of the inward elastic parts is used to abut against the outer circumference of the one-way bearing. The inner circumference of the outer lower clamping die forms a conical surface structure. The outer circumference of the inward elastic parts abuts against the inner circumference of the outer lower clamping die. The lower acting cylinder is connected to the inner lower clamping die and drives the inner lower clamping die to move axially relative to the outer lower clamping die.

[0009] Further, the inner ring fixing component further includes a shaft sleeve, an upper telescopic shaft, an inner pressing shaft, and an upper acting cylinder. The shaft sleeve is coaxially sleeved outside the upper telescopic shaft. The upper inner chuck is connected to the bottom of the shaft sleeve. The inner pressing shaft is connected to the bottom of the upper telescopic shaft. A plurality of outward elastic parts that can be bent and deformed in the radial direction are circumferentially arranged on the upper inner chuck. The outer circumference of the outward elastic parts is used to abut against the inner circumference of the one-way bearing. The inner circumference of the outward elastic parts forms a conical surface structure for abutting against the outer circumference of the inner pressing shaft. The top of the upper telescopic shaft is connected to the upper acting cylinder.

[0010] Further, it further includes a lower fixing plate and a movable plate. The shaft sleeve is connected to the movable plate. The outer lower clamping die is connected to the lower fixing plate. The lifting component includes a lifting cylinder. The two ends of the action of the lifting cylinder are respectively connected to the movable plate and the lower fixing plate.

[0011] Further, the torque driving component includes a servo motor. The shaft sleeve and the movable plate are rotationally connected through a bearing. The output shaft of the servo motor is connected to the shaft sleeve in a belt drive form.

[0012] Further, the upper telescopic shaft and the shaft sleeve are connected by splines. A connecting shaft is provided at the output end of the upper acting cylinder. The connecting shaft is axially clamped with the upper telescopic shaft. It further includes a plain bearing. The two rotating pairs on both sides of the plain bearing are respectively connected to the connecting shaft and the upper telescopic shaft.

[0013] Further, it further includes a vibration component. The vibration component includes a high-speed cylinder fixedly arranged on the lower fixing plate. A baffle is provided on the lower fixing plate. The high-speed shaft of the high-speed cylinder passes through the baffle. Springs are respectively arranged on both sides of the baffle along the high-speed shaft.

[0014] In summary, the beneficial effects of the present utility model are as follows:

[0015] For the detection device of the present utility model, during the detection work, the user only needs to place the one-way bearing at the detection station, and then can quickly lock the outer circumference of the bearing through the outer ring fixing component, quickly lock the inner circumference of the bearing through the inner ring fixing component and the lifting component, and then apply rotation through the torque driving component for detection. The structural actions of each component are reasonably set, which not only effectively improves the detection accuracy, but also effectively simplifies the operation during detection, enables the one-way bearing to be quickly placed and removed, effectively improves the efficiency, and can also meet the requirements for large-scale detection work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the one-way bearing torque detection device of the present utility model.

[0017] Figure 2 It is Figure 1 an enlarged structural diagram of A in

[0018] Figure 3 It is Figure 2 a schematic structural diagram of the outer ring fixing component in

[0019] Figure 4 It is Figure 3 a sectional view and a top view of the lower clamping die inner sleeve in

[0020] Figure 5 It is Figure 2 a sectional view and a top view of the upper inner chuck in

[0021] Figure 6 It is Figure 1 an enlarged structural diagram of B in

[0022] Figure 7 It is Figure 1 an enlarged structural diagram of C in

[0023] Reference numerals in the figures: 1. lower fixed plate; 11. lower telescopic shaft; 12. lower clamping die outer sleeve; 13. lower clamping die inner sleeve; 13a. inward elastic part; 13b. circular groove; 2. movable plate; 21. upper acting cylinder; 22. upper telescopic shaft; 23. shaft sleeve; 24. upper inner chuck; 24a. outward elastic part; 25. inner pressing shaft; 26. connecting shaft; 27. plain bearing; 3. lifting component; 31. lifting cylinder; 4. servo motor; 41. transmission belt; 42. transmission wheel; 5. high-speed cylinder; 51. high-speed shaft; 52. baffle; 53. spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following specific examples illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0026] In the embodiments of the present utility model, all directional indications (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0027] Due to reasons such as installation errors, the parallel relationship referred to in the embodiments of the present utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0028] The present utility model provides a unidirectional bearing torque detection device. Referring to Figure 1 , it includes an outer ring fixing component, an inner ring fixing component, a lifting component 3, and a torque driving component.

[0029] Referring to Figure 2 , Figure 3 and Figure 4 , the outer ring fixing component includes a lower fixing plate 1. A lower clamping die outer sleeve 12 is fixedly arranged on the lower fixing plate 1. An inner circumference of the lower clamping die outer sleeve 12 coaxially sleeved with an inner sleeve 13 of the lower clamping die. Wherein, the inner circumference of the lower clamping die outer sleeve 12 forms a tapered surface structure that expands upward from bottom. A plurality of inward elastic parts 13a are arranged along the circumference of the outer circumference of the inner sleeve 13 of the lower clamping die. Inner circumferential walls of the plurality of inward elastic parts 13a surround to form a circular groove 13b. The circular groove 13b serves as a detection station for placing the unidirectional bearing to be detected on the torque detection module 5. Outer circumferential walls of the plurality of inward elastic parts 13a surround to form a tapered surface structure for abutting and cooperating with the inner circumference of the lower clamping die outer sleeve 12. The inner sleeve 13 of the lower clamping die is made of a material with certain elasticity, such as spring steel material, so that when the inward elastic parts 13a are subjected to a directional acting force, they can bend and deform along the radial direction of the inner sleeve 13 of the lower clamping die.

[0030] A lower-acting cylinder is further provided on the lower fixing plate 1. The lower-acting cylinder is driven to act in the vertical direction. The lower telescopic shaft 11 of the lower-acting cylinder is fixedly connected to the inner lower clamping die 13, so as to drive the inner lower clamping die 13 to move vertically relative to the outer lower clamping die 12. When the one-way bearing is placed in the circular groove 13b of the inner lower clamping die 13 and the inner lower clamping die 13 is moved downward relative to the outer lower clamping die 12, the arrangement of the conical surface structure enables the inner peripheral wall of the outer lower clamping die 12 to generate a radial acting force on the inward elastic part 13a, causing the inward elastic part 13a to bend inward. Thus, the inner peripheral wall of the inward elastic part 13a abuts against the outer periphery of the one-way bearing inward, realizing the fixation of the outer periphery of the one-way bearing.

[0031] Referring to Figure 2 and Figure 5 , the inner ring fixing assembly includes a movable plate 2. An upper-acting cylinder 21 is provided on the movable plate 2. The upper telescopic shaft 22 of the upper-acting cylinder 21 performs a telescopic action vertically downward. A sleeve 23 is sleeved on the outer periphery of the upper telescopic shaft 22. The sleeve 23 is connected to the movable plate 2 through a bearing, enabling the sleeve 23 to rotate relative to the movable plate 2 with its own axis as the rotation center. The bottom of the sleeve 23 is fixedly connected to an upper inner chuck 24. A plurality of outward elastic parts 24a are arranged circumferentially at the bottom of the upper inner chuck 24. The inner peripheral walls of the plurality of outward elastic parts 24a enclose a conical surface structure that expands upward from bottom to top. The bottom end of the upper telescopic shaft 22 is fixedly connected to an inner pressing shaft 25. A conical surface structure for abutting and cooperating with the inner peripheral wall of the outward elastic part 24a is formed on the outer peripheral wall of the inner pressing shaft 25. The sleeve 23 and the upper telescopic shaft 22 are connected by splines. Furthermore, the upper telescopic shaft 22 can move axially relative to the sleeve 23, so that the inner pressing shaft 25 can move axially relative to the upper inner chuck 24. The outward elastic part 24a can also be made of spring steel material, so that when it receives a directional acting force, it can bend radially along the upper inner chuck 24.

[0032] The upper inner chuck 24 and the lower die inner sleeve 13 are coaxially arranged in the vertical direction. The inner ring fixing assembly can perform a lifting action under the action of the lifting assembly 3, so that the upper inner chuck 24 can move downward. When a one-way bearing is fixedly arranged in the lower die inner sleeve 13, the upper inner chuck 24 can continue to descend, so that the outer expansion elastic part 24a passes downward through the center of the one-way bearing, and the outer peripheral wall of the outer expansion elastic part 24a faces the inner peripheral wall of the one-way bearing. At this time, the inner pressing shaft 25 is driven to move downward by the upper telescopic shaft 22. The arrangement of the conical surface structure enables the outer peripheral wall of the inner pressing shaft 25 to generate a radial acting force on the outer expansion elastic part 24a, causing the outer expansion elastic part 24a to bend outward, so that the outer peripheral wall of the outer expansion elastic part 24a abuts tightly against the inner periphery of the one-way bearing, realizing the fixation of the inner periphery of the one-way bearing.

[0033] The lifting assembly 3 is used to drive the lifting of the inner ring fixing assembly relative to the outer ring fixing assembly. Specifically, the lifting assembly 3 includes a lifting cylinder 31. The lifting cylinder 31 is fixedly connected to one of the movable plate 2 and the lower fixed plate 1, and the telescopic shaft of the lifting cylinder 31 is fixed to the other one. Furthermore, the lifting action of the movable plate 2 is realized through the action of the lifting cylinder 31, thereby realizing the lifting of the upper inner chuck 24.

[0034] The torque driving assembly includes a servo motor 4 and a transmission wheel 42. A feedback unit is arranged on the output shaft of the servo motor 4. The transmission wheel 42 is fixedly sleeved on the outer periphery of the shaft sleeve 23. A transmission belt 41 is jointly sleeved on the transmission wheel 42 and the output shaft. The driving of the servo motor 4 can drive the synchronous rotation of the transmission wheel 42 through the transmission belt 41, so as to drive the synchronous rotation of the upper inner chuck 24 through the shaft sleeve 23. When the upper inner chuck 24 is fixed to the inner periphery of the one-way bearing and the lower die inner sleeve 13 is fixed to the outer periphery of the one-way bearing, the upper inner chuck 24 drives the inner periphery of the one-way bearing to rotate. The torque and the rotation angle generated during the rotation can be synchronously fed back to the feedback unit on the servo motor 4, so as to obtain the current torque and angle information.

[0035] Refer to Figure 7, since the upper telescopic shaft 22 and the bushing 23 are splined, when the bushing 23 rotates, the upper telescopic shaft 22 also rotates synchronously. Therefore, a connecting shaft 26 is further provided between the upper telescopic shaft 22 and the upper acting cylinder 21. One end of the connecting shaft 26 is fixedly connected to the output end of the upper acting cylinder 21, and the other end is coaxially butted with the upper telescopic shaft 22. A plain bearing 27 is provided between the connecting shaft 26 and the upper telescopic shaft 22. The two rotating pairs of the plain bearing 27 are respectively abutted against or fixedly connected to the connecting shaft 26 and the upper telescopic shaft 22, so as to realize the relative rotation between the upper telescopic shaft 22 and the connecting shaft 26 and minimize the rotational resistance therebetween. The resistance includes but is not limited to frictional force, etc. A claw is provided on the outer periphery of the upper telescopic shaft 22, and a flange is provided on the outer periphery of the connecting shaft 26. The claw axially abuts against the flange, so as to ensure the axial butting relationship between the connecting shaft 26 and the upper telescopic shaft 22 and prevent the two from separating.

[0036] The one-way bearing torque detection device in this embodiment can be used to detect various types of non-conforming products, including but not limited to products without springs, products with abnormally-shaped sub-assemblies installed in reverse, products with fixed covers pressed into spring holes, and products with reverse-stop angle out-of-tolerance. Specifically, the one-way bearing to be detected is arranged at the detection station. After the outer ring fixing component and the inner ring fixing component are respectively fixed to the outer periphery and the inner periphery of the one-way bearing to be detected, by rotating the upper inner chuck 24 in the inner ring fixing component, the inner ring of the bearing rotates relative to the outer ring, and the rotational torque and the rotational angle are recorded during the rotation. Among them, the rotation directions include clockwise and counterclockwise. Clockwise is the designed rotation direction of the one-way bearing, and counterclockwise is the designed stop direction of the one-way bearing.

[0037] During the detection, a set torque is applied to the counterclockwise rotation of the one-way bearing to be detected. Under the set torque, if the rotation angle of the inner ring relative to the outer ring is within the set angle value range, it indicates that the stop effect of the one-way bearing is qualified. If it exceeds the set angle value, it indicates that the stop effect is abnormal and can be determined as a non-conforming product.

[0038] For the torque applied during the clockwise rotation of the one-way bearing to be detected, if the one-way bearing starts to rotate only when the applied torque is greater than the set torque value, it is determined that the starting torque is too large and the rotation is inflexible, which is a non-conforming product. If the one-way bearing starts to rotate within the range where the applied torque is less than the set torque value, it is determined that the rotational flexibility is qualified.

[0039] For products without springs, they can be determined as non-conforming products according to the abnormal stop effect during their counterclockwise rotation.

[0040] For products with abnormally-shaped sub-assemblies installed in reverse, they can be determined as non-conforming products according to the fact that they stop during both clockwise and counterclockwise rotations.

[0041] For products with a fixed cover pressed onto a spring hole, they can be judged as defective products based on whether they stop during clockwise rotation, stop during counterclockwise rotation, or the starting torque exceeds the set torque value.

[0042] For products with excessive backstop angles, they can be judged as defective products based on the fact that the rotation angle exceeds the set angle value when rotating counterclockwise.

[0043] In the standard for detecting defective one-way bearings, the situation where the special-shaped sub-assembly is installed upside down is one of the categories of defective products. When the special-shaped sub-assembly is installed upside down, the inner ring of the one-way bearing will stop under clockwise and counterclockwise rotation, so that it can be detected. However, when the special-shaped sub-assembly is installed upside down but not in place, it may be rotatable clockwise or counterclockwise, which will mislead the detection. Therefore, the torque detection module 5 in this embodiment also includes a vibration component, referring to Figure 7 The vibration component includes a high-speed cylinder 5, the body of the high-speed cylinder 5 is fixedly connected to one side of the lower fixed plate 1, and a baffle 52 is further provided on the other side of the lower fixed plate 1. The high-speed shaft 51 of the high-speed cylinder 5 is penetrated by the baffle 52, and the baffle 52 is provided with two springs 53 on both sides of the axial direction of the high-speed shaft 51, respectively. The two springs 53 are both sleeved on the high-speed shaft 51 and abut against the baffle 52 for buffering. When the high-speed cylinder 5 is working, the high-frequency expansion and contraction action of the high-speed shaft 51 will generate an impact of a corresponding frequency on the baffle 52 through the spring 53, thereby driving the lower fixed plate 1 and even the outer ring fixed component to vibrate, so that the special-shaped child in the one-way bearing that is installed upside down but not in place can be installed in place under vibration.

[0044] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A one-way bearing torque detection device, characterized in that, It includes an outer ring fixing component for sleeving outside the one-way bearing and fixing with the outer periphery of the one-way bearing, and an inner ring fixing component for passing through the inside of the one-way bearing and fixing with the inner periphery of the one-way bearing. A detection station for arranging the one-way bearing is formed on the outer ring fixing component; it also includes a lifting component for driving the inner ring fixing component to move closer to / away from the outer ring fixing component, and a torque driving component for driving the inner ring fixing component to rotate relative to the outer ring fixing component.

2. The one-way bearing torque detection device according to claim 1, characterized in that, The outer ring fixing component includes an inner sleeve of the lower clamping die. The inner periphery of the inner sleeve of the lower clamping die forms the detection station. The inner periphery of the detection station is tightly fitted with the outer periphery of the one-way bearing. The inner ring fixing component includes an upper inner chuck. In the process of the lifting component driving the upper inner chuck to approach the one-way bearing, the outer periphery of the upper inner chuck is tightly fitted with the inner periphery of the one-way bearing.

3. The one-way bearing torque detection device according to claim 2, wherein The outer ring fixing component further includes an outer sleeve of the lower clamping die and a lower acting cylinder. The inner sleeve of the lower clamping die is coaxially arranged inside the outer sleeve of the lower clamping die. A plurality of inward elastic parts that can be bent and deformed radially are arranged on the inner sleeve of the lower clamping die in the circumferential direction. The inner periphery of the inward elastic part is used to abut against the outer periphery of the one-way bearing. The inner periphery of the outer sleeve of the lower clamping die forms a conical surface structure. The outer periphery of the inward elastic part abuts against the inner periphery of the outer sleeve of the lower clamping die. The lower acting cylinder is connected to the inner sleeve of the lower clamping die, driving the inner sleeve of the lower clamping die to move axially relative to the outer sleeve of the lower clamping die.

4. The one-way bearing torque detection device according to claim 3, wherein The inner ring fixing component further includes a shaft sleeve, an upper telescopic shaft, an inner pressing shaft and an upper acting cylinder. The shaft sleeve is coaxially sleeved outside the upper telescopic shaft. The upper inner chuck is connected to the bottom of the shaft sleeve. The inner pressing shaft is connected to the bottom of the upper telescopic shaft. A plurality of outward elastic parts that can be bent and deformed radially are arranged on the upper inner chuck in the circumferential direction. The outer periphery of the outward elastic part is used to abut against the inner periphery of the one-way bearing. The inner periphery of the outward elastic part forms a conical surface structure for abutting against the outer periphery of the inner pressing shaft. The top of the upper telescopic shaft is connected to the upper acting cylinder.

5. The one-way bearing torque detection device according to claim 4, characterized in that, It also includes a lower fixing plate and a movable plate. The shaft sleeve is connected to the movable plate. The outer sleeve of the lower clamping die is connected to the lower fixing plate. The lifting component includes a lifting cylinder. The two ends of the action of the lifting cylinder are respectively connected to the movable plate and the lower fixing plate.

6. The one-way bearing torque detection device according to claim 5, characterized in that, The torque driving component includes a servo motor. The shaft sleeve and the movable plate are rotationally connected through a bearing. The output shaft of the servo motor is connected to the shaft sleeve in a belt drive form.

7. The one-way bearing torque detection device according to claim 6, characterized in that, The upper telescopic shaft and the shaft sleeve are connected by splines. A connecting shaft is arranged at the output end of the upper acting cylinder. The connecting shaft is axially clamped with the upper telescopic shaft. It also includes a plain bearing. The two rotational pairs on both sides of the plain bearing are respectively connected to the connecting shaft and the upper telescopic shaft.

8. The one-way bearing torque detection device according to claim 5, characterized in that, It also includes a vibration component. The vibration component includes a high-speed cylinder fixedly arranged on the lower fixing plate. A baffle is arranged on the lower fixing plate. The high-speed shaft of the high-speed cylinder passes through the baffle. Springs are respectively arranged on both sides of the baffle along the high-speed shaft.

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