A kind of automobile motor housing strength detection device and method

Abstract

The invention discloses a motor housing strength detection device and method for automobiles, belonging to the technical field of motor housing strength detection devices for automobiles, comprising a workbench; the workbench is provided with a bending pressure block, the bending pressure block is fixedly mounted on a hydraulic push rod, the bending pressure block is provided with a pressure wheel mounting groove, a bending pressure wheel is movably mounted in the pressure wheel mounting groove, an upper fixed block is provided between the bending pressure block and a feed roller, and a lower movable block is provided below the upper fixed block; the workbench is provided with a first mounting groove, the lower movable block is provided with a guide boss, the guide boss is movably mounted in the first mounting groove, a sample to be tested is fixed by the upper fixed block and the lower movable block, after the fixing is completed, the bending pressure block moves downward, the bending pressure wheel contacts the sample to be tested, and the bending pressure wheel can rotate to prevent the bending pressure wheel from pressing the sample to be tested to cause sliding, resulting in surface damage to the sample to be tested, affecting the test effect.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile motor housing strength detection devices, and in particular relates to an automobile motor housing strength detection device and method. Background Art

[0002] In the related art, the motor housing is cast from aluminum alloy or cast iron. The strength of the motor housing for automobiles has high requirements and needs to be measured to ensure that the deformation of the motor housing under the impact of external force is within a controllable range, thereby avoiding squeezing of components such as the stator inside the housing, which may cause failure of the motor. After casting, the motor housing is usually tested as a whole. Because the motor housing has a complex structure, it is impossible to obtain the specific strength data of the housing material itself, and the motor material needs to be disassembled and tested separately. The present disclosure proposes a device and method for testing the strength of motor housing materials. Summary of the invention

[0003] The purpose of the present invention is to provide a motor housing strength detection device and method for automobiles, which solves the problem of difficulty in strength testing of existing motor housing materials by setting a pressure roller.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a motor housing strength testing device for automobiles, comprising a workbench; two feed rollers are arranged on the side of the workbench, a bending pressure block is arranged on the side of the feed roller, the bending pressure block is fixedly mounted on a hydraulic push rod, a pressure wheel mounting groove is formed on the bending pressure block, a bending pressure wheel is movably mounted in the pressure wheel mounting groove, an upper fixed block is arranged between the bending pressure block and the feed roller, and a lower movable block is arranged below the upper fixed block;

[0006] The workbench is provided with a first mounting groove, the lower movable block is provided with a guide boss, the guide boss is movably installed in the first mounting groove, a second mounting groove is provided below the first mounting groove, a spring contact boss is provided on the guide boss, the spring contact boss is installed in the second mounting groove, a second spring is provided between the spring contact boss and the second mounting groove, a camshaft mounting hole is provided below the first mounting groove, a camshaft mounting shaft is provided in the camshaft mounting hole, an adjusting cam is provided on the cam mounting shaft, the lower movable block moves downward under the elastic force of the second spring, and the lower side surface of the lower movable block contacts the side surface of the adjusting cam.

[0007] Furthermore, a first limiting slot is provided on the feed roller, a second limiting slot is provided below the upper fixed block, a third limiting slot is provided on the lower movable block, and a fourth limiting slot is provided on the bending pressure wheel.

[0008] Furthermore, a third mounting groove is provided on the workbench, a resistance boss is provided on the bending pressure block, the resistance boss is movably installed in the third mounting groove, a locking rod mounting block is provided below the bending pressure block, a locking rod mounting hole is provided on the locking rod mounting block, a locking rod is movably installed in the locking rod mounting hole, and the side surface of one end of the resistance boss is in resistance to the side surface of the locking rod.

[0009] Furthermore, a first gear is installed at one end of the cam mounting shaft away from the adjusting cam, a first rack is provided on the side of the first gear, the first rack is meshed with the first gear, and the first rack is pushed by a hydraulic cylinder.

[0010] Furthermore, the first rack is installed on the first slider, the first slider is provided with an interfering inclined groove, a first spring mounting boss is provided on the side of the locking rod, a first spring mounting vertical plate is provided on the side of the first spring mounting boss, the first spring mounting vertical plate is installed on the workbench, a first spring is provided between the first spring mounting vertical plate and the first spring mounting boss, an inclined contact head is provided at the end of the locking rod away from the interfering boss, the inclined contact head is located in the interfering inclined groove, the interfering inclined groove is provided with an interfering inclined surface, and the inclined contact head and the interfering inclined surface interfere with each other.

[0011] Furthermore, the lower movable block is provided with test block mounting grooves which are evenly distributed in a circle, the test block mounting groove is provided with a test block spring mounting groove, a test block is movably installed in the test block mounting groove, a return boss is provided on the test block, the return boss is located in the test block spring mounting groove, a test block return spring is provided between the return boss and the test block spring mounting groove, and a strength test head is provided on the side of the test block close to the third limit slot.

[0012] Furthermore, a conflicting cone mounting hole is provided on the lower movable block, the center line of the conflicting cone mounting hole coincides with the center line of the circumferential distribution of the test block mounting groove, a movable column is movably installed in the conflicting cone mounting hole, a conflicting cone is provided on the movable column, and a conflicting round head is provided on one side of the test block close to the conflicting cone mounting hole, and the conflicting round head and the side surface of the conflicting cone conflict with each other.

[0013] The present invention has the following beneficial effects:

[0014] 1. The strength of the material is determined by bending the sample to be tested to different degrees and recording the bending state of the sample under different pressures.

[0015] 2. Fix the sample to be tested by the upper fixed block and the lower movable block. After the fixation is completed, the bending block moves downward, and the bending wheel contacts the sample to be tested to complete the bending of the sample to be tested. The bending wheel can rotate to prevent the bending wheel from pressing the sample to be tested to cause sliding and damage the surface of the sample to be tested;

[0016] 3. The up and down movement of the lower movable block can ensure the stability of the fixed sample to be tested and also avoid the difficulty of inserting the sample to be tested due to the small gap between the upper fixed block and the lower movable block;

[0017] 4. The movement of the first slider drives the movement of the first rack, and the first rack drives the first gear to rotate. The rotation of the first gear can drive the adjustment cam to rotate. The adjustment cam interferes to make the lower movable block move upward to complete the fixation of the sample to be tested. At the same time, the positions of the inclined surface interference head and the interference inclined surface change to make the locking rod release the lock on the interference boss. In this way, it can be avoided that when the lower movable block has not moved into place to complete the effective fixation of the sample to be tested together with the upper fixed block, the bending pressure block moves downward to bend the sample to be tested, resulting in inconsistent bending angles and safety hazards of bouncing of the sample to be tested, and the movement position of the lower movable block is ensured to be related to the locking state of the interference boss to avoid operational errors.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present disclosure;

[0021] Figure 2 It is a structural schematic diagram of a workbench according to an embodiment of the present disclosure;

[0022] Figure 3 This is a schematic diagram of the installation of the first sliding block in the embodiment of the present disclosure;

[0023] Figure 4 This is a schematic diagram of the structure of the bending block according to an embodiment of the present disclosure;

[0024] Figure 5 It is a structural schematic diagram of the upper fixing block in the embodiment of the present disclosure;

[0025] Figure 6 It is a schematic structural diagram of a first sliding block according to an embodiment of the present disclosure;

[0026] Figure 7 It is a schematic diagram of the internal structure of the active block in the embodiment of the present disclosure;

[0027] Figure 8 This is a schematic diagram of the installation of the test block according to the embodiment of the present disclosure;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1- workbench, 2- feed roller, 3- upper fixed block, 4- bending pressure block, 5- lower movable block, 6- adjustment cam, 7- locking rod mounting block, 11- first mounting slot, 12- second mounting slot, 13- third mounting slot, 14- camshaft mounting hole, 21- first limit slot, 31- second limit slot, 41- pressure wheel mounting slot, 43- bending pressure wheel, 44- fourth limit slot, 45- contact boss, 51- third limit slot, 52- guide boss, 53- spring contact boss, 54- second spring, 55 test block installation Groove, 56 test block spring mounting groove, 50 conflicting round table mounting hole, 61-cam mounting shaft, 62-first gear, 63-first slider, 64-first rack, 65 conflicting inclined groove, 66-contacting inclined surface, 71-locking rod mounting hole, 72-locking rod, 73-inclined contact head, 74-first spring mounting boss, 75-first spring mounting vertical plate, 76-first spring, 80-test block, 81-return boss, 82-strength test head, 83-contacting round head, 84-test block return spring, 9-movable column, 91-contacting round table. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe 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.

[0031] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] See also Figure 1-7 As shown, the present invention is a motor housing strength detection device for automobiles, comprising a workbench 1, two feed rollers 2 are arranged on the side of the workbench 1, a bending pressure block 4 is arranged on the side of the feed roller 2, the bending pressure block 4 is fixedly mounted on the hydraulic push rod, a pressure wheel mounting groove 41 is opened in the bending pressure block 4, a bending pressure wheel 43 is movably mounted in the pressure wheel mounting groove 41, an upper fixed block 3 is arranged between the bending pressure block 4 and the feed roller 2, and a lower movable block 5 is arranged below the upper fixed block 3;

[0033] The workbench 1 is provided with a first mounting groove 11, and the lower movable block 5 is provided with a guide boss 52, which is movably installed in the first mounting groove 11. A second mounting groove 12 is provided below the first mounting groove 11, and a spring-contacting boss 53 is provided on the guide boss 52, which is installed in the second mounting groove 12. A second spring 54 is provided between the spring-contacting boss 53 and the second mounting groove 12. A camshaft mounting hole 14 is provided below the first mounting groove 11, and a camshaft mounting shaft 61 is provided in the camshaft mounting hole 14. An adjusting cam 6 is provided on the cam mounting shaft 61. The lower movable block 5 moves downward under the elastic force of the second spring 54, and the lower side surface of the lower movable block 5 conflicts with the side surface of the adjusting cam 6. By such a design, the motor housing is cut into square strips or cylindrical test samples by wire cutting, and the test sample to be bent is The sample passes through between the two feed rollers 2, and the feed rollers 2 can be driven by a motor to rotate to guide the sample to be tested to move forward. After the sample to be tested moves into place, the motor drives the adjusting cam 6 to rotate. The adjusting cam 6 contacts and causes the lower movable block 5 to overcome the elastic force of the second spring 54 and move upward. In this way, the sample to be tested is fixed by the upper fixed block 3 and the lower movable block 5. After the fixation is completed, the bending pressure block 4 moves downward, and the bending pressure wheel 43 contacts the sample to be tested to complete the bending of the sample to be tested. The bending pressure wheel 43 can rotate to prevent the bending pressure wheel 43 from pressing the sample to be tested to cause sliding and damage the surface of the sample to be tested. The bending pressure block 4 is driven by a motor or a cylinder to move back and forth. The up and down movement of the lower movable block 5 can ensure the stability of the fixation of the sample to be tested, and also avoid the difficulty of inserting the sample to be tested due to the small gap between the upper fixed block 3 and the lower movable block 5.

[0034] Among them, the feed roller 2 is provided with a first limit slot 21, the upper fixed block 3 is provided with a second limit slot 31, the lower movable block 5 is provided with a third limit slot 51, and the bending pressure wheel 43 is provided with a fourth limit slot 44; through such a design, the contact area with the sample to be tested can be increased through the limit slot, which can not only ensure the stability of the radial fixation of the sample to be tested, but also avoid excessive local force on the surface of the sample to be tested, resulting in surface damage.

[0035] Among them, a third mounting groove 13 is provided on the workbench 1, and a resistance boss 45 is provided on the bending pressure block 4, and the resistance boss 45 is movably installed in the third mounting groove 13, and a locking rod mounting block 7 is provided below the bending pressure block 4, and a locking rod mounting hole 71 is provided on the locking rod mounting block 7, and a locking rod 72 is movably installed in the locking rod mounting hole 71, and one end side of the resistance boss 45 is in resistance to the side of the locking rod 72; in this way, the locking rod 72 can cooperate with the resistance boss 45 to complete the fixed locking of the bending pressure block 4, so that when the lower movable block 5 has not moved into place to complete the effective fixation of the sample to be tested together with the upper fixed block 3, the bending pressure block 4 moves downward to bend the sample to be tested, resulting in inconsistent bending angles and the safety hazard of bouncing of the sample to be tested; further, the locking rod 72 can be driven by the cylinder to move back and forth.

[0036] Among them, a first gear 62 is installed at one end of the cam mounting shaft 61 away from the adjusting cam 6, and a first rack 64 is provided on the side of the first gear 62. The first rack 64 is meshed with the first gear 62, and the first rack 64 is pushed by a hydraulic cylinder; the movement of the first rack 64 drives the first gear 62 to rotate, and the rotation of the first gear 62 can drive the adjusting cam 6 to rotate, and the adjusting cam 6 resists to make the lower movable block 5 overcome the elastic force of the second spring 54 and move upward, so that the fixation of the sample to be tested is completed by the upper fixed block 3 and the lower movable block 5.

[0037] Among them, the first rack 64 is installed on the first slider 63, the first slider 63 is provided with an interfering inclined groove 65, a first spring mounting boss 74 is provided on the side of the locking rod 72, a first spring mounting vertical plate 75 is provided on the side of the first spring mounting boss 74, the first spring mounting vertical plate 75 is installed on the workbench 1, a first spring 76 is provided between the first spring mounting vertical plate 75 and the first spring mounting boss 74, an inclined surface contact head 73 is provided at the end of the locking rod 72 away from the interfering boss 45, the inclined surface contact head 73 is located in the interfering inclined groove 65, the interfering inclined groove 65 is provided with an interfering inclined surface 66, the inclined surface contact head 73 and the interfering inclined surface 66 are in conflict with each other, the first slider 63 is driven to move by the cylinder or the motor screw, the movement of the first slider 63 drives the first rack 64 to move, and the first rack 64 drives the first gear 62 to rotate The rotation of the first gear 62 can drive the adjustment cam 6 to rotate, and the adjustment cam 6 contacts to make the lower movable block 5 overcome the elastic force of the second spring 54 and move upward, so that the test piece is fixed by the upper fixed block 3 and the lower movable block 5. When the first sliding block 63 moves, the positions of the inclined surface contact head 73 and the contact inclined surface 66 change, and the locking rod 72 moves outward under the action of the first spring 76. When the locking rod 72 releases the lock on the contact boss 45, it can avoid that the bending pressure block 4 moves downward to bend the test piece when the lower movable block 5 has not moved into place to complete the effective fixation of the test piece together with the upper fixed block 3, resulting in inconsistent bending angles and safety hazards of bouncing of the test piece, and ensure that the movement position of the lower movable block 5 contacts the locking state of the boss 45 to avoid operating errors.

[0038] Among them, the lower movable block 5 is provided with test block mounting grooves 55 which are evenly distributed on the circumference, and the test block mounting grooves 55 are provided with test block spring mounting grooves 56. A test block 8 is movably installed in the test block mounting grooves 55, and a return boss 81 is provided on the test block 8. The return boss 81 is located in the test block spring mounting groove 56, and a test block return spring 84 is provided between the return boss 81 and the test block spring mounting groove 56. A strength test head 82 is provided on the side of the test block 8 close to the third limit slot 51. Furthermore, the lower movable block 5 is provided with a conflicting truncated cone mounting hole 50, and the center line of the conflicting truncated cone mounting hole 50 coincides with the center line of the circumferential distribution of the test block mounting grooves 55. A movable column 9 is movably installed in the conflicting truncated cone mounting hole 50, and a There is a resistance round table 91, and a resistance round head 83 is provided on one side of the test block 8 close to the resistance round table mounting hole 50, and the resistance round head 83 and the side surface of the resistance round table 91 are in resistance with each other; through such a design, when the sample to be tested is bent, the movable column 9 is driven to move by the motor or hydraulic cylinder, the resistance round head 83 and the side surface of the resistance round table 91 are in resistance with each other, and the resistance round table 91 pushes the test block 8 to move toward the third limit slot 51, and the strength test head 82 will resist the bent and deformed sample to be tested in the third limit slot 51, and the strength test head 82 will be inserted into the sample to be tested, so that the strength of the groove material of the sample to be tested after bending and deformation can be determined by the pulling force of the hydraulic rod at different positions of the movable column 9, so that the safety range and limit of the continued use of the motor housing after deformation can be judged.

[0039] How it works

[0040] The sample to be bent is passed through between the two feed rollers 2. The feed rollers 2 can be driven by a motor to rotate to guide the sample to be tested to move forward. After the sample to be tested moves into place, the motor drives the adjusting cam 6 to rotate. The adjusting cam 6 contacts and causes the lower movable block 5 to overcome the elastic force of the second spring 54 and move upward. In this way, the sample to be tested is fixed by the upper fixed block 3 and the lower movable block 5. After the fixing is completed, the bending pressure block 4 moves downward, and the bending pressure wheel 43 contacts the sample to be tested to complete the bending of the sample to be tested. The bending pressure wheel 43 can rotate to prevent the bending pressure wheel 43 from pressing the sample to be tested to cause sliding, resulting in damage to the surface of the sample to be tested, affecting the stability of the test result. The bending pressure block 4 is driven by a motor or a cylinder to move back and forth. The up and down movement of the lower movable block 5 can ensure the stability of the fixation of the sample to be tested, and also avoid the difficulty of inserting the sample to be tested due to the small gap between the upper fixed block 3 and the lower movable block 5.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A motor housing strength testing device for automobiles, comprising a workbench (1), characterized in that: The workbench (1) is provided with two feed rollers (2) on the side, and a bending pressure block (4) is provided on the side of the feed roller (2). The bending pressure block (4) is fixedly mounted on the hydraulic push rod, and a pressure wheel mounting groove (41) is provided on the bending pressure block (4). A bending pressure wheel (43) is movably mounted in the pressure wheel mounting groove (41). An upper fixed block (3) is provided between the bending pressure block (4) and the feed roller (2), and a lower movable block (5) is provided below the upper fixed block (3). The workbench (1) is provided with a first mounting groove (11), the lower movable block (5) is provided with a guide boss (52), the guide boss (52) is movably mounted in the first mounting groove (11), a second mounting groove (12) is provided below the first mounting groove (11), a spring contact boss (53) is provided on the guide boss (52), the spring contact boss (53) is mounted in the second mounting groove (12), a second spring (54) is provided between the spring contact boss (53) and the second mounting groove (12), a camshaft mounting hole (14) is provided below the first mounting groove (11), a camshaft mounting shaft (61) is provided in the camshaft mounting hole (14), an adjusting cam (6) is provided on the camshaft mounting shaft (61), the lower movable block (5) moves downward under the elastic force of the second spring (54), and the lower side surface of the lower movable block (5) and the side surface of the adjusting cam (6) contact each other.

2. The automotive motor housing strength detection device according to claim 1, characterized in that: The feed roller (2) is provided with a first limit slot (21), the upper fixed block (3) is provided with a second limit slot (31) below, the lower movable block (5) is provided with a third limit slot (51), and the bending pressure wheel (43) is provided with a fourth limit slot (44).

3. The automotive motor housing strength detection device according to claim 2, characterized in that: The workbench (1) is provided with a third mounting groove (13), the bending pressure block (4) is provided with a contact boss (45), the contact boss (45) is movably mounted in the third mounting groove (13), a locking rod mounting block (7) is provided below the bending pressure block (4), a locking rod mounting hole (71) is provided on the locking rod mounting block (7), a locking rod (72) is movably mounted in the locking rod mounting hole (71), and a side surface of one end of the contact boss (45) contacts a side surface of the locking rod (72).

4. The automobile motor housing strength detection device according to claim 3, characterized in that: A first gear (62) is installed at one end of the cam mounting shaft (61) away from the adjustment cam (6), a first rack (64) is provided on the side of the first gear (62), the first rack (64) and the first gear (62) are meshed with each other, and the first rack (64) is pushed by a hydraulic cylinder.

5. The automobile motor housing strength detection device according to claim 4, characterized in that: The first rack (64) is mounted on the first slider (63), the first slider (63) is provided with an oblique interference groove (65), a first spring mounting boss (74) is provided on the side of the locking rod (72), a first spring mounting vertical plate (75) is provided on the side of the first spring mounting boss (74), the first spring mounting vertical plate (75) is mounted on the workbench (1), a first spring (76) is provided between the first spring mounting vertical plate (75) and the first spring mounting boss (74), an inclined surface contact head (73) is provided at one end of the locking rod (72) away from the interference boss (45), the inclined surface contact head (73) is located in the oblique interference groove (65), the interference oblique groove (65) is provided with an interference inclined surface (66), and the inclined surface contact head (73) and the interference inclined surface (66) are mutually in conflict.

6. The automobile motor housing strength detection device according to claim 5, characterized in that: The lower movable block (5) is provided with test block mounting grooves (55) uniformly distributed on the circumference, the test block mounting groove (55) is provided with a test block spring mounting groove (56), a test block (8) is movably mounted in the test block mounting groove (55), a return boss (81) is provided on the test block (8), the return boss (81) is located in the test block spring mounting groove (56), a test block return spring (84) is provided between the return boss (81) and the test block spring mounting groove (56), and a strength test head (82) is provided on a side of the test block (8) close to the third limit slot (51).

7. The automobile motor housing strength detection device according to claim 5, characterized in that: The lower movable block (5) is provided with a contacting truncated cone mounting hole (50), the center line of the contacting truncated cone mounting hole (50) coincides with the center line of the circumferential distribution of the test block mounting groove (55), a movable column (9) is movably mounted in the contacting truncated cone mounting hole (50), a contacting truncated cone (91) is provided on the movable column (9), and a contacting round head (83) is provided on one side of the test block (8) close to the contacting truncated cone mounting hole (50), and the contacting round head (83) and the side surface of the contacting truncated cone (91) contact each other.

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