Device and method for detecting bending resistance of mechanical part
By designing a mechanical parts bending performance detection device including a detection table, hydraulic cylinder and pushing parts, the problem of uneven shape of the mechanical parts is solved, and effective detection of the bending performance of mechanical parts and convenience for students to learn is achieved.
Patent Information
- Application Number
- CN202411598318.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-04-01
AI Technical Summary
During the existing training operations in colleges and universities, the uneven shape of mechanical parts leads to side slippage, and the downforce of the downforce equipment cannot be effectively accepted, which affects students' understanding of the bending performance of mechanical parts during training.
Design a bending performance detection device for mechanical parts, including a detection table, extension beam, adjustment plate, hydraulic cylinder, push seat and pressure sensor. Through the expansion and contraction of the hydraulic cylinder, a clamping structure is formed between the pushing member of the pushing seat and the multiple limiting members, providing one-way thrust to ensure that the mechanical parts do not slip sideways during the inspection process.
This device can effectively detect the bending resistance of mechanical parts with uneven side walls, avoid the side slippage phenomenon of mechanical parts, and do not need to be pre-positioned, so that students can accurately understand the bending resistance of mechanical parts during practical training.
Smart Images
Figure CN119738284A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of bending resistance detection, and in particular to a device and method for detecting the bending resistance of mechanical parts. Background Art
[0002] With the continuous development of the technology level of the machinery industry, there is a lack of technical talents in technical jobs. Therefore, it is very urgent to cultivate a large number of skilled workers. The mechanical majors in colleges and universities adopt a combination of classroom theoretical teaching and offline practical training. Theoretical teaching cannot allow students to quickly understand the various performance parameters of mechanical parts. Therefore, through practical training, students can operate and test the parameter performance of various mechanical parts, which can give students a personal experience and deepen their learning impression.
[0003] At present, the equipment used in practical training in colleges and universities is relatively simple. Most of them require students to hold mechanical parts and place them under the pressing end of the pressing device, and use the pressing device to provide downward pressure to test the bending resistance of the mechanical parts. However, due to the different shapes of different mechanical parts, when testing the end faces with uneven shapes, the mechanical parts are prone to slip sideways and cannot effectively receive the downward pressure of the pressing device. This makes it impossible for students to learn and understand the bending resistance of mechanical parts in person during practical training. Therefore, a mechanical parts bending resistance detection device and detection method are designed here to solve the above problems. Summary of the invention
[0004] The purpose of the present invention is to provide a device and method for detecting the bending resistance of mechanical parts to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for testing the bending resistance of mechanical parts, comprising a testing platform, an extension beam is fixed to the upper side wall of the testing platform, an adjustment plate is vertically fixed to the upper side of the end of the extension beam, a hydraulic cylinder is provided on the side wall of the adjustment plate so that it can be adjusted up and down, a push seat is fixed to the telescopic end of the hydraulic cylinder, and a pressure sensor is provided between the push seat and the hydraulic telescopic end. A push member is provided on the side wall of the end of the push seat, and a plurality of limit members are provided on the upper surface of the testing platform. The push member and the plurality of limit members form a testing space for clamping and limiting the mechanical parts for bending resistance testing. The telescopic end of the hydraulic cylinder stretches the push member at the end of the push seat against one side wall of the mechanical parts of different sizes and shapes, and the plurality of limit members adjust the limit position on the upper surface of the testing platform and against the other side wall of the mechanical parts of different sizes and shapes.
[0006] In a further embodiment, a lifting groove is provided on the side wall of the adjustment support plate, the hydraulic cylinder is connected to an adjustment block that slides up and down along the lifting groove, the upper end of the adjustment support plate is threadedly connected to an adjustment rod that extends into the lifting groove and is rotatably connected to the bottom wall of the lifting groove, and the adjustment block is provided with a threaded hole that is threadedly connected to the adjustment rod.
[0007] In a further embodiment, the pushing member includes two hinged plates symmetrically fixed on the upper and lower side walls of the pushing seat, swing rods respectively hinged on the ends of the two hinged plates, and a clamping bar fixed on the end of the swing rod. Push rods are hinged at both ends of the opposite side walls of the two clamping bars. The ends of the two push rods opposite to each other at the same end are hinged. The two clamping bars and two groups of push rods hinged to each other constitute a power structure for pushing the mechanical parts for anti-bending detection.
[0008] In a further embodiment, the pushing member includes a C-shaped frame fixed to the side wall of the end of the pushing seat and two clamping bars 2 fixed to the two free ends of the C-shaped frame. The inner side of the C-shaped frame and the two clamping bars 2 constitute a power structure for pushing the bending resistance detection of mechanical parts.
[0009] In a further embodiment, the limiting member is a block 1, which bends and extends upward toward the side close to the pushing member, a base is fixed to the bottom end of the block 1 on the side away from the pushing member, an inverted T-shaped adjustment block is fixed to the bottom end of the base, and an inverted T-shaped slot is provided on the upper surface of the detection table for slidingly engaging with the inverted T-shaped adjustment block, the side wall of the block 1 facing the pushing member is in surface contact with the mechanical part, and the side walls of multiple blocks 1 facing the pushing member are against the side walls of the mechanical part away from the pushing member, thereby preventing the mechanical part from sliding over the block 1.
[0010] In a further embodiment, a column is vertically fixed to the upper end surface of the base, a downwardly bent elastic pressing sheet is fixed to the top of the side wall of the column facing the stopper one, and the end of the elastic pressing sheet extends and presses on the upper side of the end of the stopper one.
[0011] In a further embodiment, a guide groove is provided on the upper side of one end of the stopper, and the end of the elastic pressing piece slides and extends into the guide groove.
[0012] In a further embodiment, the limiting member is block 2, which bends and extends upward on a side close to the pushing member, a base is fixed to the bottom end of block 2 on a side away from the pushing member, an inverted T-shaped adjustment block is fixed to the bottom end of the base, and an inverted T-shaped slot is provided on the upper end surface of the detection table for slidingly engaging with the inverted T-shaped adjustment block, block 2 is a curved cylindrical structure, and there is line contact between block 2 and the mechanical part, and multiple outer walls of block 2 rest against the side wall of the mechanical part away from the pushing member, thereby preventing the mechanical part from being pushed over block 2.
[0013] In a further embodiment, a display screen is provided on the side wall of the adjustment support plate, the signal output end of the pressure sensor is connected to a processing module, and the signal output port of the processing module is connected to the signal input port of the display screen.
[0014] Preferably, a detection method based on the above-mentioned device for detecting the bending resistance of mechanical parts comprises the following steps:
[0015] A pusher and a plurality of limiters are arranged on both sides of the mechanical part to be tested, and a testing space for clamping and limiting mechanical parts of different sizes and structures for anti-bending testing is formed between the pusher and the plurality of limiters. The mechanical part to be tested is first placed in the testing space and in contact with the sides of the plurality of limiters, while the mechanical part is seated on the testing table. Finally, the telescopic end of the hydraulic cylinder is stretched to push the pusher at the end of the push seat against the side wall opposite to the mechanical parts of different sizes and shapes and the limiters.
[0016] As the hydraulic cylinder continues to stretch, the unidirectional force on the mechanical parts becomes larger and larger. Once deformation occurs, the force sensed by the pressure sensor is the bending limit force of the mechanical parts. By checking the values on the display screen, students can accurately know the bending performance of different mechanical parts in this process.
[0017] Compared with the prior art, the present invention has the following beneficial effects:
[0018] The present invention comprises a pushing member and a plurality of limiting members to form a detection space for clamping and limiting mechanical parts of different size structures for anti-bending detection. It can provide unidirectional thrust for mechanical parts with uneven side walls to test the anti-bending performance of the mechanical parts. During the detection process, the mechanical parts will not slide sideways and there is no need for pre-positioning in advance, so that students can understand and learn the anti-bending performance of mechanical parts in practical training. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0020] Figure 2 It is a schematic diagram of the assembly structure of the stopper 1 and the base of the present invention;
[0021] Figure 3 This is a schematic diagram of a further improved structure of the assembly of the stopper 1 and the base of the present invention;
[0022] Figure 4 It is a schematic diagram of the assembly structure of the stopper 2 and the base of the present invention;
[0023] Figure 5 It is a schematic structural diagram of a first embodiment of a pusher of the present invention;
[0024] Figure 6 It is a structural schematic diagram of a second embodiment of a pushing member of the present invention.
[0025] In the figure: 1. test table; 11. base; 12. block 1; 13. inverted T-shaped adjustment block; 14. block 2; 15. column; 16. elastic pressure piece; 2. adjustment support plate; 21. adjustment rod; 3. hydraulic cylinder; 31. push seat; 32. hinge plate; 33. swing rod; 34. clamping bar 1; 35. push rod; 36. C-shaped frame; 37. clamping bar 2. DETAILED DESCRIPTION
[0026] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] Embodiment: This embodiment provides a device for testing the bending resistance of mechanical parts, including a testing platform 1, an extension beam is fixed to the side wall of the upper side of the testing platform 1, an adjustment support plate 2 is vertically fixed to the upper side of the end of the extension beam, a hydraulic cylinder 3 is provided on the side wall of the adjustment support plate 2 so that it can be adjusted up and down, a pushing seat 31 is fixed to the telescopic end of the hydraulic cylinder 3, a pressure sensor is provided between the pushing seat 31 and the hydraulic telescopic end, a display screen is provided on the side wall of the adjustment support plate 2, a processing module is connected to the signal output end of the pressure sensor, and the signal output port of the processing module is connected to the signal input port of the display screen, such as Figure 1 As shown, the telescopic end of the hydraulic cylinder 3 stretches, driving the push seat 31 to contact the machine to be tested, then the pressure sensor will sense the pressure signal, the processing module receives the pressure signal and performs analog-to-digital processing on it, and finally converts it into a digital display on the display screen, allowing students to intuitively view the force value.
[0028] After the power source is provided, the next step is to determine the position of the mechanical parts and undergo a bending resistance test. During the teaching process, the structure of the mechanical parts that students are asked to test is generally not too complicated, but their outer walls are not completely flat. Therefore, during the bending resistance test, the test is often interrupted due to the side slip of the mechanical parts, and the mechanical parts need to be re-fixed. Figure 1As shown, for this purpose, a pusher is provided on the side wall of the end of the pusher seat 31, and a plurality of limiters are provided on the upper end surface of the detection platform 1. The pusher and the plurality of limiters are arranged on both sides of the mechanical part to be detected. The pusher and the plurality of limiters form a detection space for clamping and limiting mechanical parts of different sizes and structures for anti-bending detection. During the detection, the mechanical part to be detected is first placed in the detection space and in contact with the sides of the plurality of limiters. At the same time, the mechanical part is placed on the detection platform 1. Finally, the telescopic end of the hydraulic cylinder 3 is stretched to push the pusher at the end of the pusher seat 31 against the side wall of the mechanical part of different sizes and shapes. As the hydraulic cylinder 3 continues to stretch, the unidirectional force on the mechanical part becomes larger and larger. Once deformation occurs, the force sensed and detected by the pressure sensor is the bending limit force of the mechanical part. By checking the values on the display screen, students can accurately know the anti-bending performance of different mechanical parts in this process. By providing unidirectional thrust to mechanical parts with uneven side walls, the bending resistance of the mechanical parts can be tested. During the test, the mechanical parts will not slide sideways and there is no need for pre-positioning in advance, allowing students to understand and learn the bending resistance of different mechanical parts in practical training.
[0029] Since the side walls of mechanical parts cannot be guaranteed to be completely flat, and different mechanical parts have different heights, when applying force, try to choose a relatively flat and centered position to push, so as to avoid uneven force on the mechanical parts and sideways sliding. A lifting groove is opened on the side wall of the adjustment support plate 2, and the hydraulic cylinder 3 is connected to an adjustment block that slides up and down along the lifting groove. The upper end of the adjustment support plate 2 is threadedly connected to an adjustment rod 21 that extends into the lifting groove and is rotatably connected to the bottom wall of the lifting groove. The adjustment block is provided with a threaded hole that is threadedly connected to the adjustment rod 21. Figure 1 As shown, manually rotate the adjusting rod 21 to adjust the height of the hydraulic cylinder 3 connected to the adjusting block along the lifting slot in the up and down direction, and at the same time translate the mechanical parts longitudinally on the testing platform 1, so as to adjust the height of the pushing member to a position relatively centered with the mechanical parts, ensuring that it is facing the center of the mechanical parts when pushed, to avoid uneven force on the mechanical parts and sideways sliding, which affects the effective implementation of the bending resistance test.
[0030] Specifically, in the first embodiment of the pusher, the pusher comprises two hinged plates 32 symmetrically fixed to the upper and lower side walls of the pusher seat 31, swing rods 33 respectively hinged to the ends of the two hinged plates 32, and a clamping bar 34 fixed to the end of the swing rod 33. A torsion spring is provided at the hinged joint between the swing rod 33 and the hinged plate 32 to ensure that the swing rod 33 is in a horizontal state under normal conditions. Push rods 35 are hinged at both ends of the opposite side walls of the two clamping bars 34, and the ends of the two push rods 35 facing each other at the same end are hinged, such as Figure 5As shown, two clamping bars 34 and two groups of push rods 35 hinged together form a power structure for pushing the bending resistance test of mechanical parts. The telescopic end of the hydraulic cylinder 3 is linked to the two clamping bars 34 distributed up and down by the push seat 31 to horizontally feed and clamp at the upper and lower ends of the side of the mechanical part. As the telescopic end of the hydraulic cylinder 3 continues to stretch, the side walls of the two push rods 35 hinged together are against the side walls of the mechanical part. After the push rods 35 contact the outer wall of the mechanical part, as the hydraulic cylinder 3 continues to stretch, the side walls of the mechanical part can generate a force to push the push rods 35 to the left, and the two push rods 35 hinged together can be rotated to reduce the angle between the two push rods 35, and the swing rod 33 rotates around the end of the hinge plate 32, and the upper and lower clamping bars 34 are relatively close together and against the upper and lower side walls of the same side of the mechanical part. The tensile force of the hydraulic cylinder 3 is converted into the clamping force of the support bar 34 on the workpiece. In principle, the greater the stretching of the hydraulic cylinder 3, the greater the clamping force. Thus, the two sets of push rods 35 hinged together and the upper and lower clamping bars 34 play the role of linkage limit in three directions, making the limit of mechanical parts before detection more stable. In this embodiment, when the angle between the two push rods 35 hinged together becomes smaller, not only can the clamping force be provided to the side wall of the part, but the push rods 35 also contact the side wall of the part, so as to better clamp the part.
[0031] The second embodiment of the pusher includes a C-shaped frame 36 fixed to the side wall of the end of the push seat 31 and two clamping bars 37 fixed to the two free ends of the C-shaped frame 36. The inner side of the C-shaped frame 36 and the two clamping bars 37 form a dynamic structure for pushing the mechanical parts for anti-bending detection. Figure 6As shown, the telescopic end of the hydraulic cylinder 3 is horizontally fed and clamped at the upper and lower ends of the side of the mechanical part through the linkage of the push seat 31 and the two clamping strips 1 34 distributed up and down. As the telescopic end of the hydraulic cylinder 3 continues to stretch, the C-frame 36 abuts against the side wall of the mechanical part, and the upper and lower clamping strips 2 37 are relatively close together and abut against the upper and lower side walls of the same side of the mechanical part. For mechanical parts with irregular upper and lower side walls, after the C-frame 36 abuts against the side wall of the mechanical part, the side wall of the mechanical part provides a leftward thrust for the C-frame 36. While the two free ends of the C-frame 36 are close together and deformed, the two clamping strips 2 37 are close together. It should be noted here that the upper and lower clamping strips 2 37 will contact the outermost surface wall of the upper and lower irregularly shaped parts of the mechanical part to achieve the purpose of three-way linkage limiting. This embodiment is more suitable for mechanical parts with irregular upper and lower side walls. The C-frame 36 first contacts the part, and the two free ends of the C-frame 36 are deformed in a small range to adjust the relative position of the upper and lower clamping strips 2 37. Even when the C-frame 36 is not in contact with the side wall of the mechanical part (i.e., the height of the part is slightly larger than the opening of the C-frame 36), when it abuts against the part, the C-frame 36 slightly expands and deforms outward and generates an expansion force, while the two clamping bars 37 are in contact with the upper and lower side walls of the part. The tension of the C-frame 36 is used to provide a clamping force for the upper and lower clamping bars 37 to limit the upper and lower side walls of the mechanical part.
[0032] The above two pushers can limit the upper and lower sides of the same side of the mechanical parts at the same time, so as to avoid the mechanical parts from swinging up and down when the bending resistance test force is applied, which affects the stability of the mechanical parts detection.
[0033] Specifically, this embodiment specifically records the first solution of the limiter: the limiter is a stopper 12, the stopper 12 is bent and extended upwardly toward the side close to the pusher, a base 11 is fixed to the bottom end of the stopper 12 away from the pusher, an inverted T-shaped adjustment block 13 is fixed to the bottom end of the base 11, and an inverted T-shaped groove slidably engaged with the inverted T-shaped adjustment block 13 is provided on the upper end surface of the detection platform 1. According to the front and rear widths of the mechanical parts, two stoppers 12 are preferably used here, such as Figure 1 and Figure 2 As shown, two stoppers 12 are slid along the inverted T-shaped grooves using their corresponding inverted T-shaped adjustment blocks 13 to adjust the distance between the two stoppers 12, so as to be used as position limits for mechanical parts of different lengths. Then, the side wall of the stopper 12 facing the pusher contacts the surface between the mechanical parts, and the side walls of multiple stoppers 12 facing the pusher abut against the side wall of the mechanical parts away from the pusher, and the stopper 12 bends and extends upward toward the side close to the pusher, thereby preventing the mechanical parts from sliding over the stopper 12.
[0034] When this limit member is used in conjunction with the first push member, since the push rod 35 is located on the side of the push seat 31, the telescopic end of the hydraulic cylinder 3 drives the push seat 31 to feed horizontally, providing lateral thrust for the mechanical parts, and the upper and lower clamping bars 34 and two blocks 12 are used to assist in limiting the mechanical parts, ensuring that the anti-bending test is effective.
[0035] When this limit member is used in conjunction with the second push member, the two stoppers 12 and the upper and lower clamping strips 37 form a clamping member for clamping mechanical parts and performing anti-bending performance testing. As long as the telescopic end of the hydraulic cylinder 3 drives the pushing seat 31 to feed horizontally and the C-shaped frame 36 rests on the side wall of the mechanical part, a lateral thrust can be provided to the mechanical part to test the anti-bending performance of the mechanical part.
[0036] The second solution of the limiter: the limiter is a stopper 14, the stopper 14 is bent and extended upward on the side close to the pusher, the bottom end of the stopper 14 away from the pusher is fixed with a base 11, the bottom end of the base 11 is fixed with an inverted T-shaped adjustment block 13, and the upper end surface of the detection platform 1 is provided with an inverted T-shaped groove that is slidably engaged with the inverted T-shaped adjustment block 13, such as Figure 4 As shown, the second stopper 14 is a curved columnar structure, and the second stopper 14 is in line contact with the mechanical part. Multiple outer walls of the second stopper 14 abut against the side wall of the mechanical part away from the pusher, thereby preventing the mechanical part from being pushed over the second stopper 14.
[0037] When this limiter is used in conjunction with the first pusher, since the push rod 35 is located on the side of the push seat 31, the telescopic end of the hydraulic cylinder 3 drives the push seat 31 to feed horizontally, providing a lateral thrust for the mechanical parts, and the upper and lower clamping bars 1 34 and two stoppers 2 14 are used to assist in limiting the mechanical parts, ensuring that the bending resistance test is carried out effectively. The stopper 2 14 is a curved columnar structure, and the stopper 2 14 is in line contact with the mechanical part, reducing the contact surface between the stopper 2 14 and the mechanical part, thereby reducing the large friction generated between the bending deformation of the mechanical part and the outer wall of the stopper 2 14 during the test.
[0038] When this limit member is used in conjunction with the second push member, the two stoppers 14 and the clamping strips 37 distributed up and down form a clamping member for clamping mechanical parts and performing bending resistance testing. As long as the telescopic end of the hydraulic cylinder 3 drives the pushing seat 31 to feed horizontally and the C-shaped frame 36 rests on the side wall of the mechanical part, a lateral thrust can be provided to the mechanical part to test the bending resistance of the mechanical part.
[0039] like Figure 3As shown, in order to further strengthen the upper end surface of the base 11, a column 15 is vertically fixed, and a downwardly bent elastic pressing piece 16 is fixed on the top of the side wall of the column 15 facing the stopper 12, and the end of the elastic pressing piece 16 extends and presses on the upper side of the end of the stopper 12. The elastic potential energy of the elastic pressing piece 16 is used to further enhance the support strength of the stopper 12 to avoid bending deformation of the stopper 12 due to excessive lateral thrust, and a guide groove is provided on the upper side of the end of the stopper 12, and the end of the elastic pressing piece 16 slides and extends into the guide groove to avoid the end of the elastic pressing piece 16 and the side wall of the end of the stopper 12. Of course, the elastic pressing piece 16 can also be used to enhance the support strength of the stopper 2 14. This embodiment is applicable to the first type of limiter and the second type of limiter.
[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for testing the bending resistance of mechanical parts, comprising a testing platform (1), an extension beam is fixed to the upper side wall of the testing platform (1), an adjustment support plate (2) is vertically fixed to the upper side of the end of the extension beam, a hydraulic cylinder (3) is provided on the side wall of the adjustment support plate (2) so as to be adjustable up and down, a push seat (31) is fixed to the telescopic end of the hydraulic cylinder (3), a pressure sensor is provided between the push seat (31) and the hydraulic telescopic end, and the device is characterized in that: A pushing member is provided on the side wall at the end of the pushing seat (31), and a plurality of limiting members are provided on the upper end surface of the testing platform (1). A testing space for clamping and limiting mechanical parts for anti-bending testing is formed between the pushing member and the plurality of limiting members. The telescopic end of the hydraulic cylinder (3) stretches the pushing member at the end of the pushing seat (31) against one side wall of mechanical parts of different sizes and shapes, and the plurality of limiting members adjust the limiting position on the upper end surface of the testing platform (1) and abut against the other side wall of mechanical parts of different sizes and shapes.
2. The device for detecting the bending resistance of mechanical parts according to claim 1, characterized in that: The side wall of the adjustment support plate (2) is provided with a lifting groove, the hydraulic cylinder (3) is connected to an adjustment block that slides up and down along the lifting groove, the upper end of the adjustment support plate (2) is threadedly connected to an adjustment rod (21) that extends into the lifting groove and is rotatably connected to the bottom wall of the lifting groove, and the adjustment block is provided with a threaded hole that is threadedly connected to the adjustment rod (21).
3. The device for detecting the bending resistance of mechanical parts according to claim 2, characterized in that: The pushing member comprises two hinged plates (32) symmetrically fixed on the upper and lower side walls of the pushing seat (31), swing rods (33) respectively hinged on the ends of the two hinged plates (32) and a clamping bar (34) fixed on the end of the swinging bar (33). Push rods (35) are hinged at both ends of the opposite side walls of the two clamping bars (34). The ends of the two push rods (35) opposite to each other at the same end are hinged. The two clamping bars (34) and the two groups of push rods (35) hinged together form a power structure for pushing the bending resistance detection of mechanical parts.
4. The device for detecting the bending resistance of mechanical parts according to claim 2, characterized in that: The pushing member comprises a C-shaped frame (36) fixed to the side wall of the end of the pushing seat (31) and two clamping bars (37) fixed to the two free ends of the C-shaped frame (36). The inner side of the C-shaped frame (36) and the two clamping bars (37) form a power structure for pushing the mechanical parts for anti-bending detection.
5. The device for detecting the bending resistance of mechanical parts according to claim 3 or 4, characterized in that: The limiting member is a stopper (12), the stopper (12) is bent and extended upwardly toward a side close to the pushing member, a base (11) is fixed to the bottom end of the stopper (12) away from the pushing member, an inverted T-shaped adjustment block (13) is fixed to the bottom end of the base (11), an inverted T-shaped groove for slidingly engaging with the inverted T-shaped adjustment block (13) is provided on the upper end surface of the detection platform (1), a side wall of the stopper (12) facing the pushing member is in surface contact with the mechanical part, and a plurality of side walls of the stopper (12) facing the pushing member are pressed against the side wall of the mechanical part away from the pushing member, thereby preventing the mechanical part from sliding over the stopper (12).
6. The device for detecting the bending resistance of mechanical parts according to claim 5, characterized in that: A column (15) is vertically fixed to the upper end surface of the base (11), and a downwardly bent elastic pressing sheet (16) is fixed to the top of the side wall of the column (15) facing the stopper one (12), and the end of the elastic pressing sheet (16) extends and presses on the upper side of the end of the stopper one (12).
7. The device for detecting the bending resistance of mechanical parts according to claim 6, characterized in that: A guide groove is provided on the upper side of the end of the stopper (12), and the end of the elastic pressing sheet (16) slides and extends into the guide groove.
8. The device for detecting the bending resistance of mechanical parts according to claim 3 or 4, characterized in that: The limiting member is a second stopper (14), the second stopper (14) is bent and extended upwardly toward a side close to the pushing member, a base (11) is fixed to the bottom end of the second stopper (14) away from the pushing member, an inverted T-shaped adjustment block (13) is fixed to the bottom end of the base (11), an inverted T-shaped groove for slidingly engaging with the inverted T-shaped adjustment block (13) is provided on the upper end surface of the detection platform (1), the second stopper (14) is a bent columnar structure, and the second stopper (14) is in line contact with the mechanical part, and a plurality of outer walls of the second stopper (14) are against the side wall of the mechanical part away from the pushing member, so as to prevent the mechanical part from being pushed over the second stopper (14).
9. The device for detecting the bending resistance of mechanical parts according to claim 1, characterized in that: A display screen is arranged on the side wall of the adjustment support plate (2); a processing module is connected to the signal output end of the pressure sensor; and a signal output port of the processing module is connected to a signal input port of the display screen.
10. A method for detecting the bending resistance of mechanical parts, using the bending resistance of mechanical parts detection device according to any one of claims 1 to 9, characterized in that: The steps include: A pusher and a plurality of limiters are arranged on both sides of a mechanical part to be tested, and a testing space for clamping and limiting mechanical parts of different sizes and structures for anti-bending testing is formed between the pusher and the plurality of limiters. The mechanical part to be tested is first placed in the testing space and in contact with the sides of the plurality of limiters, while the mechanical part is seated on a testing platform (1). Finally, the telescopic end of the hydraulic cylinder (3) is stretched to push the pusher at the end of the push seat (31) against the side wall of the mechanical parts of different sizes and shapes opposite to the limiters. As the hydraulic cylinder (3) continues to stretch, the unidirectional force on the mechanical parts becomes larger and larger. Once deformation occurs, the force sensed by the pressure sensor is the bending limit force of the mechanical parts. By checking the value on the display screen, students can accurately know the bending performance of different mechanical parts in this process.