Fatigue test tool

Abstract

The utility model discloses a fatigue test tool, which comprises a base provided with a plurality of mounting parts used for mounting parts to be tested; the testing mechanism comprises a rotating frame, a driving device and testing rods, the rotating frame is rotationally arranged on the upper side of the base, the rotating axis is vertically distributed, the driving device is used for driving the rotating frame to rotate, and the testing rods are fixedly arranged on the rotating frame and vertically distributed; wherein the plurality of mounting parts are distributed on the same circumference around the rotating axis of the rotating frame, and the test rod is configured to be in contact friction with a to-be-tested part mounted on any mounting part in the rotating process of the rotating frame. According to the utility model, the to-be-tested parts can be installed on the plurality of installation parts at the same time, and the driving device drives the rotating frame to rotate to enable the test rod to rub with the to-be-tested parts on the plurality of installation parts, so that the fatigue test can be carried out on the plurality of to-be-tested parts at the same time, and the test efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of fatigue test devices, in particular to a fatigue test tool. Background Art

[0002] The drill rod elastic claw is mainly used to quickly insert and fix the drill rod to facilitate the replacement of the drill rod. It must ensure that the drill rod can be forced into the drill rod elastic claw under the action of external force and then stuck without falling, and it must also ensure that the drill rod can be forcibly removed with a certain force. Therefore, the material of the drill rod elastic claw must have good elasticity, and it also needs to have strong wear resistance and aging resistance, and it must ensure that the performance does not decrease after repeated use for more than 10,000 times. Before the product is delivered for use, it must undergo factory inspection and a certain number of samples must be taken for fatigue testing to ensure the quality of the batch of products. However, most of the fatigue test devices in the existing technology have the defect of low test efficiency, so there is an urgent need for a fatigue test tooling with high test efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a fatigue test tool with high test efficiency.

[0004] The fatigue test tool according to the embodiment of the utility model comprises:

[0005] A base having a plurality of mounting parts, wherein the mounting parts are used to mount the parts to be tested;

[0006] The testing mechanism comprises a rotating frame, a driving device and a testing rod, wherein the rotating frame is rotatably arranged on the upper side of the base and the rotating axis is vertically distributed, the driving device is used to drive the rotating frame to rotate, and the testing rod is fixedly arranged on the rotating frame and vertically distributed;

[0007] Wherein, the plurality of mounting portions are cocircularly distributed around the rotation axis of the rotating frame, and the test rod is configured such that: during the rotation of the rotating frame, the test rod can contact and rub against the part to be tested mounted on any of the mounting portions.

[0008] The fatigue test tooling according to the embodiment of the utility model has at least the following beneficial effects:

[0009] When a fatigue test is performed on a part to be tested, the part to be tested is installed on one or more of the mounting parts according to the test requirements, and then the driving device drives the rotating frame to rotate to drive the test rod to rotate synchronously. During the rotation of the rotating frame, the test rod contacts and rubs with the part to be tested installed on the mounting part. The rotating frame is rotated for a set number of circles and then stops. The part to be tested is removed to check whether the degree of damage meets the test requirements, and the fatigue test of the part to be tested is completed. With the above-mentioned structural setting, the part to be tested can be installed on multiple mounting parts at the same time, and the rotating frame is driven to rotate by the driving device to make the test rod rub against the parts to be tested on multiple mounting parts, so that fatigue tests can be performed on multiple parts to be tested at the same time, and the test efficiency is high.

[0010] According to some embodiments of the utility model, the mounting portion is provided with two mounting structures, and the two mounting structures are respectively used to mount the two parts to be tested, wherein the test rod is configured as follows: during the rotation of the rotating frame, the test rod can pass between the two parts to be tested on any of the mounting portions and simultaneously contact and rub against the two parts to be tested.

[0011] According to some embodiments of the present utility model, the mounting structure includes a group of threaded holes, and the threaded holes are used to cooperate with holes on the part to be measured and to pass bolts through them, so as to achieve installation and fixation of the part to be measured.

[0012] According to some embodiments of the present invention, the mounting portion is detachably disposed on the base.

[0013] According to some embodiments of the utility model, a guide structure and a locking mechanism are provided on the base corresponding to any of the mounting parts, the locking mechanism includes a locking rod, the locking rod can be adjusted in a direction perpendicular to the extension direction of the guide structure, the mounting part is slidably matched with the guide structure, and a locking hole is provided on the mounting part, and the locking hole is used for the locking rod to be inserted to lock the mounting part to the guide structure.

[0014] According to some embodiments of the utility model, the guide structure includes two oppositely arranged guide plates, the cross-section of the guide plates is L-shaped, a horizontally distributed slide groove is formed between the guide plate and the upper end surface of the base, the mounting portion is located between the two guide plates, and the opposite sides of the mounting portion are slidably embedded in the two slide grooves respectively.

[0015] According to some embodiments of the utility model, the locking rod is slidably installed on the guide plate, and the sliding direction of the locking rod is perpendicular to the extension direction of the guide plate. The locking mechanism also includes an elastic member, and the elastic member is used to apply an elastic force to the locking rod to keep the locking rod partially inserted into the locking hole under normal conditions.

[0016] According to some embodiments of the utility model, a bracket is provided on the side of the guide plate facing away from the mounting portion, the locking rod is slidably inserted into the bracket, a stop block is fixedly provided on the outer periphery of the locking rod, the stop block is located between the bracket and the guide plate, and the elastic member is configured as a compression spring, the compression spring is sleeved on the locking rod and the two ends respectively abut the bracket and the stop block.

[0017] According to some embodiments of the utility model, the locking rod is provided with a pull plate distributed perpendicular to the length direction of the locking rod, the pull plate is located on the side of the bracket away from the compression spring, and the pull plate can slide synchronously with the locking rod.

[0018] According to some embodiments of the utility model, the bracket is detachably arranged on the guide plate, a stud is provided at one end of the locking rod and a step surface is formed facing outward away from the guide plate, a sleeve hole is provided on the pull plate and is sleeved on the stud through the sleeve hole, a limiting nut is threadedly connected on the stud, and the pull plate is located between the limiting nut and the step surface.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 It is a schematic diagram of the installation structure of an embodiment of the utility model;

[0022] Figure 2 This is an exploded schematic diagram of the installation state of an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the installation structure of the locking mechanism of the embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the installation structure of the rotating frame of the embodiment of the utility model.

[0025] Figure Number:

[0026] Base 100, mounting portion 110, threaded hole 111, locking hole 112, locking mechanism 120, locking rod 121, elastic member 122, stopper 123, pull plate 124, stud 125, step surface 126, limit nut 127, guide plate 130, bracket 131, mounting shaft 140, first bearing 150, second bearing 160;

[0027] Parts to be tested 200;

[0028] The testing mechanism 300 , the rotating frame 310 , the sleeve 311 , the testing rod 320 , the motor 330 , the small gear 340 , and the large gear 350 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 4 As shown, a fatigue test tool of an embodiment of the present invention comprises: a base 100 and a test mechanism 300. It should be noted that this embodiment can be applied to fatigue test of drill rod elastic jaws (ie, the part to be tested 200).

[0034] A plurality of mounting portions 110 are disposed on the base 100 , and any mounting portion 110 can be used to mount the part to be tested 200 .

[0035] The testing mechanism 300 includes a rotating frame 310, a driving device and a testing rod 320. The rotating frame 310 is rotatably arranged on the upper side of the base 100, and the rotation axis of the rotating frame 310 is vertically distributed. The driving device is used to drive the rotating frame 310 to rotate. The testing rod 320 is fixed on the rotating frame 310 and is vertically distributed. The testing rod 320 is at least partially located on the lower side of the rotating frame 310.

[0036] The plurality of mounting portions 110 are cocircularly distributed around the rotation axis of the rotating frame 310 , and the test rod 320 is configured such that during the rotation of the rotating frame 310 , the test rod 320 can contact and rub against the part 200 to be tested mounted on any mounting portion 110 .

[0037] When a fatigue test is performed on a part 200 to be tested, the part 200 to be tested is installed on one or more of the mounting parts 110 according to the test requirements, and then the driving device drives the rotating frame 310 to rotate to drive the test rod 320 to rotate synchronously. During the rotation of the rotating frame 310, the test rod 320 contacts and rubs with the part 200 to be tested installed on the mounting part 110. The rotating frame 310 is rotated for a set number of circles and then stops. The part 200 to be tested is removed to check whether the degree of damage meets the test requirements, and the fatigue test of the part 200 to be tested is completed. The fatigue test tooling using the above-mentioned structure can simultaneously install the part 200 to be tested on multiple mounting parts 110, and the rotating frame 310 is driven to rotate by the driving device so that the test rod 320 rubs with the parts 200 to be tested on multiple mounting parts 110, so that fatigue tests can be performed on multiple parts 200 to be tested at the same time, and the test efficiency is high.

[0038] In some specific embodiments, a vertically distributed installation shaft 140 is provided on the base 100, and a plurality of installation portions 110 are cocircumferentially distributed around the central axis of the installation shaft 140. A vertically extending sleeve 311 is provided at the center of the rotating frame 310. The sleeve 311 is sleeved on the circumference of the installation shaft 140, and a first bearing 150 is provided between the inner wall of the sleeve 311 and the outer wall of the installation shaft 140 to rotatably install the rotating frame 310. The first bearing 150 can be a cylindrical roller bearing. The driving device includes a motor 330, a pinion 340 and a large gear 350. The motor 330 is fixed on the base 100 and its output shaft is vertically distributed. The pinion 340 is provided on the output shaft of the motor 330. The large gear 350 is fixedly sleeved on the outer periphery of the sleeve 311 and meshes with the pinion 340, so that the rotating frame 310 can be driven to rotate by driving the pinion 340 to rotate through the motor 330; further, in order to reduce the axial force of the first bearing 150 and improve the structural stability of the rotating frame 310, a plurality of second bearings 160 are provided on the base 100 on the lower side of the large gear 350, and the plurality of second bearings 160 are distributed circumferentially around the central axis of the mounting shaft 140, and the second bearings 160 are rotatably mounted on the bearing seat, and the bearing seat is fixed on the base 100, and the rotation axis of the second bearing 160 is distributed along the radial direction of the mounting shaft 140, and the outer ring of the second bearing 160 abuts against the lower end surface of the large gear 350.

[0039] Reference Figures 1 to 4As shown, in some embodiments, the mounting portion 110 is provided with two mounting structures, and the two mounting structures are respectively used to mount two parts to be tested 200, wherein the test rod 320 is configured as follows: during the rotation of the rotating frame 310, the test rod 320 can pass between the two parts to be tested 200 on any mounting portion 110, and simultaneously contact and rub with the two parts to be tested 200. It can be understood that when the parts to be tested 200 are drill rod elastic claws, they all appear in pairs, so in this embodiment, two mounting structures are provided on the mounting portion 110 to mount the two paired drill rod elastic claws. The claws can not only install more parts 200 to be tested, but also be closer to the use environment of the parts 200 to be tested, thereby improving the accuracy of the fatigue test. It should be noted that when the drill rod elastic claw is used to fix the drill rod, the drill rod is quickly inserted and fixed between the two matched drill rod elastic claws. In this embodiment, the test rod 320 can pass between the two parts 200 to be tested on any mounting portion 110 and contact and rub with the two parts 200 to be tested at the same time during the rotation of the rotating frame 310. The test environment is very close to the use environment of the drill rod elastic claw, so the accuracy of the test can be improved. Further, the mounting structure includes a group of threaded holes 111, which are used to cooperate with the holes on the parts 200 to be tested and to be penetrated by bolts to achieve the installation and fixation of the parts 200 to be tested. The structure is simple and easy to use. The threaded holes 111 are arranged on the upper end surface of the mounting portion 110 and are distributed vertically. It is understandable that when the part 200 to be tested is an elastic jaw of a drill, the elastic jaw of the drill generally has two holes for inserting bolts, so a group of threaded holes 111 includes two threaded holes 111, which are adapted to the two holes on the elastic jaw of the drill.

[0040] Reference Figures 1 to 4 As shown, in some embodiments, the mounting portion 110 is detachably mounted on the base 100. It is understandable that the part 200 to be tested may have a variety of models and specifications. In order to improve the versatility, the present embodiment provides a detachable mounting portion 110, so that different mounting portions 110 can be replaced to be suitable for the installation of different parts 200 to be tested. When the part 200 to be tested is a drill rod elastic clamp, two mounting structures are provided on the mounting portion 110, one mounting structure includes a group of threaded holes 111, and the group of threaded holes 111 includes two threaded holes 111. The two threaded holes 111 are used to cooperate with the two hole positions on the drill rod elastic clamp and penetrate bolts to achieve the installation and fixation of the drill rod elastic clamp. Obviously, the hole diameters and spacings of the two hole positions on the drill rod elastic clamp of different sizes and specifications will be different. Therefore, in order to be suitable for drill rod elastic clamps of different specifications, it is only necessary to open threaded holes 111 with different hole diameters and hole spacings on different mounting portions 110.

[0041] Reference Figures 1 to 4As shown, it can be understood that a guide structure and a locking mechanism 120 are provided corresponding to any mounting portion 110 on the base 100. The locking mechanism 120 includes a locking rod 121. The locking rod 121 can be adjusted in a direction perpendicular to the extension direction of the guide structure. The mounting portion 110 is slidably matched with the guide structure to limit the mounting portion 110 to be able to move only in the extension direction of the guide structure. A locking hole 112 is provided on the mounting portion 110. The locking hole 112 extends in a direction perpendicular to the extension direction of the guide structure. The locking hole 112 is used for inserting the locking rod 121 to limit the sliding of the mounting portion 110 relative to the guide structure, thereby locking the mounting portion 110 to the guide structure. The structure is simple and practical.

[0042] Reference Figures 1 to 4 As shown, it can be understood that the guide structure includes two relatively arranged guide plates 130, the cross-section of the guide plate 130 in its extension direction is L-shaped, and a horizontally distributed slide groove is formed between the guide plate 130 and the upper end surface of the base 100. The mounting portion 110 is located between the two guide plates 130, and the opposite sides of the mounting portion 110 are respectively slidably embedded in the two slide grooves, thereby limiting the mounting portion 110 to only slide along the extension direction of the guide plate 130 (that is, the extension direction of the guide structure), and the structure is simple and reliable.

[0043] Reference Figures 1 to 4 As shown, it can be understood that the locking rod 121 is slidably mounted on the guide plate 130, and the sliding direction of the locking rod 121 is perpendicular to the extension direction of the guide plate 130. The locking mechanism 120 also includes an elastic member 122, which is used to apply elastic force to the locking rod 121 to keep the locking rod 121 partially inserted into the locking hole 112 under normal conditions. By providing the elastic member 122, the locking rod 121 can be inserted into the locking hole 112 by utilizing its elastic force, and the locking rod 121 can be disengaged from the locking hole 112 by applying a reverse force greater than the elastic force of the elastic member 122 to the locking rod 121, which is very convenient to operate. Obviously, when the locking rod 121 is disengaged from the locking hole 112, the mounting portion 110 can be slid out from between the two guide plates 130.

[0044] Reference Figures 1 to 4 As shown, it can be understood that a bracket 131 is provided on the side of the guide plate 130 away from the mounting portion 110, and the locking rod 121 is slidably penetrated through the bracket 131 to slidably install the locking rod 121, and a stopper 123 is fixedly provided on the outer periphery of the locking rod 121, and the stopper 123 is located between the bracket 131 and the guide plate 130, and the elastic member 122 is configured as a compression spring, which is sleeved on the locking rod 121 and has its two ends respectively abutting against the bracket 131 and the stopper 123, thereby applying an elastic force toward the locking hole 112 to the locking rod 121, and the structure is simple and stable; it can be understood that a through hole is provided on the guide plate 130 provided with the bracket 131 for the locking rod 121 to pass through.

[0045] Reference Figures 1 to 4 As shown, it can be understood that a pull plate 124 is provided on the locking rod 121 and is distributed perpendicular to the length direction of the locking rod 121. The pull plate 124 is located on the side of the bracket 131 away from the compression spring. The pull plate 124 can slide synchronously with the locking rod 121. The pull plate 124 is provided to facilitate the operator to apply force to the locking rod 121. In some specific embodiments, the bracket 131 is detachably mounted on the guide plate 130 via fasteners, a stud 125 is provided at one end of the locking rod 121 away from the guide plate 130 and a step surface 126 is formed which faces outward away from the guide plate 130, a sleeve hole is provided on the pull plate 124 and is sleeved on the stud 125 through the sleeve hole, a limiting nut 127 is threadedly connected on the stud 125, and the pull plate 124 is located between the limiting nut 127 and the step surface 126. Through the above arrangement, the disassembly and replacement of the compression spring and the locking rod 121 can be facilitated. When the compression spring or the locking rod 121 needs to be replaced, the bracket 131 is first removed, and then the limiting nut 127 is unscrewed to remove the pull plate 124. After removing the pull plate 124, the locking rod 121 can be removed from the bracket 131, and at the same time, the compression spring can be removed from the locking rod 121, which is very convenient to operate.

[0046] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A fatigue test tool, characterized in that: include: A base (100) is provided with a plurality of mounting portions (110), wherein the mounting portions (110) are used to mount the parts to be tested (200); The testing mechanism (300) comprises a rotating frame (310), a driving device and a testing rod (320), wherein the rotating frame (310) is rotatably arranged on the upper side of the base (100) and the rotating axis is vertically distributed, the driving device is used to drive the rotating frame (310) to rotate, and the testing rod (320) is fixedly arranged on the rotating frame (310) and is vertically distributed; The plurality of mounting portions (110) are cocircumferentially distributed around a rotation axis of the rotating frame (310), and the test rod (320) is configured such that, during the rotation of the rotating frame (310), the test rod (320) can come into contact and rub against the part to be tested (200) mounted on any of the mounting portions (110).

2. The fatigue test fixture according to claim 1, characterized in that: The mounting portion (110) is provided with two mounting structures, and the two mounting structures are respectively used to mount the two parts to be tested (200), wherein the test rod (320) is configured such that: during the rotation of the rotating frame (310), the test rod (320) can pass between the two parts to be tested (200) on any of the mounting portions (110) and simultaneously contact and rub against the two parts to be tested (200).

3. The fatigue test fixture according to claim 2, characterized in that: The mounting structure comprises a group of threaded holes (111), and the threaded holes (111) are used to cooperate with holes on the part to be tested (200) and to pass bolts therethrough, so as to achieve the installation and fixation of the part to be tested (200).

4. The fatigue test tool according to claim 1 or 3, characterized in that: The mounting portion (110) is detachably arranged on the base (100).

5. The fatigue test fixture according to claim 4, characterized in that: The base (100) is provided with a guide structure and a locking mechanism (120) corresponding to any of the mounting parts (110); the locking mechanism (120) comprises a locking rod (121); the locking rod (121) can be adjusted in a direction perpendicular to the extension direction of the guide structure; the mounting part (110) is slidably matched with the guide structure; the mounting part (110) is provided with a locking hole (112); the locking hole (112) is used for the locking rod (121) to be inserted so as to lock the mounting part (110) to the guide structure.

6. The fatigue test fixture according to claim 5, characterized in that: The guide structure comprises two guide plates (130) arranged opposite to each other, the cross section of the guide plate (130) is L-shaped, a horizontally distributed slide groove is formed between the guide plate (130) and the upper end surface of the base (100), the mounting portion (110) is located between the two guide plates (130), and the opposite sides of the mounting portion (110) are slidably embedded in the two slide grooves respectively.

7. The fatigue test fixture according to claim 6, characterized in that: The locking rod (121) is slidably mounted on the guide plate (130), and the sliding direction of the locking rod (121) is perpendicular to the extension direction of the guide plate (130). The locking mechanism (120) further comprises an elastic member (122), and the elastic member (122) is used to apply an elastic force to the locking rod (121) so as to keep the locking rod (121) partially inserted into the locking hole (112) under normal conditions.

8. The fatigue test fixture according to claim 7, characterized in that: A bracket (131) is provided on the side of the guide plate (130) facing away from the mounting portion (110); the locking rod (121) is slidably inserted into the bracket (131); a stopper (123) is fixedly provided on the outer periphery of the locking rod (121); the stopper (123) is located between the bracket (131) and the guide plate (130); the elastic member (122) is configured as a compression spring; the compression spring is sleeved on the locking rod (121) and has two ends respectively abutting against the bracket (131) and the stopper (123).

9. The fatigue test fixture according to claim 8, characterized in that: The locking rod (121) is provided with a pull plate (124) which is distributed perpendicular to the length direction of the locking rod (121); the pull plate (124) is located on a side of the bracket (131) away from the compression spring; and the pull plate (124) can slide synchronously with the locking rod (121).

10. The fatigue test fixture according to claim 9, characterized in that: The bracket (131) is detachably mounted on the guide plate (130); a stud (125) is provided at one end of the locking rod (121) and is formed with a step surface (126) facing outward away from the guide plate (130); a sleeve hole is provided on the pull plate (124) and is sleeved on the stud (125) through the sleeve hole; a limiting nut (127) is threadedly connected to the stud (125); and the pull plate (124) is located between the limiting nut (127) and the step surface (126).

Images