A mechanical testing machine with hydraulic power control system

Abstract

The present invention discloses a mechanical testing machine with a hydraulic power control system, belonging to the technical field of mechanical testing machines; it comprises a body, a bracket is fixedly connected to the upper side of the body, a hydraulic device is fixedly connected to the upper side of the bracket, a working plate is fixedly connected to the output end of the hydraulic device, a clamping assembly is fixedly connected to the working plate and the outer side of the body, the clamping assembly comprises a first hydraulic cylinder and a moving frame, the first hydraulic cylinder is fixed to the moving frame, and the output shaft of the first hydraulic cylinder passes through the moving frame and is fixedly connected to the moving plate. When the present invention performs mechanical experiments on an object, the clamping and fixing operation of the object is completed through multiple groups of rotating rods and rotating plates, the operation is simple, each rotating rod and rotating plate is against the object, and the clamping and fixing effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical testing machines, and in particular to a mechanical testing machine with a hydraulic power control system. Background Art

[0002] ‌A mechanical testing machine is a machine used to test materials and structures. It can measure the strength, stiffness and deformation capacity of materials. Among them, a mechanical testing machine with a hydraulic power control system, also known as a hydraulic universal testing machine, has the advantages of high stiffness, high precision and fast response compared to other testing machines. It also has a large driving force and a wide speed regulation range. It is an ideal testing equipment. The hydraulic universal testing machine also uses hydraulic cylinders and hydraulic rods to drive the clamp to move, thereby completing the clamping and fixing operation of the object being tested. It is simple to operate and has a good clamping effect.

[0003] However, in the actual working process, especially when testing some round or nearly round objects, the contact area between the fixture and the object is small, and the fixing effect of the object is poor, which will cause the object to fall out of the fixture during the subsequent test, affecting the normal test results. After the test is completed, it is necessary to manually perform corresponding inspection operations on the side walls of the object, which is time-consuming and labor-intensive, and the inspection effect of manual inspection is generally poor. Therefore, a mechanical testing machine with a hydraulic power control system is provided. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a mechanical testing machine with a hydraulic power control system.

[0005] The present invention adopts the following technical solutions:

[0006] A mechanical testing machine with a hydraulic power control system comprises a body, a bracket fixedly connected to the upper side of the body, a hydraulic device fixedly connected to the upper side of the bracket, an output end of the hydraulic device fixedly connected to a working plate, a clamping assembly fixedly connected to the working plate and the outer side of the body, the clamping assembly comprising a first hydraulic cylinder and a moving frame, the first hydraulic cylinder is fixed to the moving frame, and the output shaft of the first hydraulic cylinder passes through the moving frame and is fixedly connected to the moving plate, a plurality of groups of first racks are fixedly connected to the lower side of the moving plate, a plurality of groups of gantry rods are fixedly connected to the inner side wall of the moving frame, the outer sides of the plurality of groups of gantry rods are rotatably sleeved with first gears, the first gears are meshed with the first racks, the outer sides of the gantry rods are also rotatably sleeved with second gears, and the outer sides of the moving frame slide Multiple groups of second racks are sleeved, and multiple groups of second racks are meshed with second gears. A square rod is slidably sleeved in the second rack, one end of the square rod is fixedly connected with a round table, a fourth spring is fixedly connected between the round table and the second rack, the other end of the square rod is fixedly connected with a rotating rod, and two groups of rotating plates are rotatably connected to the outer side of the rotating rod, an intermediate plate is rotatably sleeved on the outer side of the gantry rod, and a second hydraulic cylinder is fixedly connected to the side wall of the intermediate plate, and the output end of the second hydraulic cylinder is fixedly connected to a limiting rod through a connecting rod, multiple groups of second connecting holes are circumferentially opened on the outer side of the first gear, and multiple groups of first connecting holes are circumferentially opened on the outer side of the second gear, a fixed plate is fixedly sleeved on the outer side of the gantry rod, and multiple groups of third connecting holes are circumferentially opened on the side wall of the fixed plate.

[0007] Preferably, a control component for controlling the rotation of the rotating plate is installed in the movable frame, and the control component includes two groups of control rods slidably sleeved on the side walls of the second rack, and both ends of the two groups of control rods are fixedly connected to the same control plate, a first spring is fixedly connected between the control plate and the second rack, a triangular plate is fixedly connected to the side wall of the rotating plate, and a second spring is fixedly connected between the triangular plate and the square rod.

[0008] Preferably, a regulating rod is slidably sleeved on the side wall of the rotating plate, one end of the regulating rod is fixedly connected to the limit plate, the other end of the regulating rod is fixedly connected to the regulating plate, and a third spring is fixedly connected between the regulating plate and the rotating plate.

[0009] Preferably, a sensor is fixedly connected between the regulating plate and the rotating plate.

[0010] Preferably, a shaking assembly for controlling the shaking of the rotating plate is installed in the moving frame, and the shaking assembly includes a fixed ring fixedly sleeved on the outside of the limit rod, two groups of moving rods are slidably sleeved on the side wall of the first gear, one end of the two groups of moving rods is fixedly connected with a moving ring, the fixed ring and the moving ring are abutted against each other, the other end of the two groups of moving rods is fixedly connected with a cam, a fifth spring is fixedly connected between the cam and the first gear, a connecting plate is slidably sleeved on the side wall of the moving frame, a connecting rod is fixedly connected to the side wall of the connecting plate, a sixth spring is fixedly connected between the connecting rod and the moving frame, a sleeve is also slidably sleeved on the outside of the connecting rod, a seventh spring is fixedly connected between the sleeve and the connecting rod, the outside of the sleeve is fixedly connected to a bottom plate, the side wall of the bottom plate is fixedly connected to a round rod, and the round rod and the frustum are abutted against each other.

[0011] Preferably, multiple groups of protrusions are fixedly connected to the outer sides of the rotating plate and the limiting plate.

[0012] Preferably, the outer sides of the cam and the connecting plate are both smooth.

[0013] The beneficial effects of the present invention are:

[0014] 1. First, when conducting mechanical experiments on objects, multiple sets of rotating rods and rotating plates are used to complete the clamping and fixing operation of the objects. The operation is simple, and each rotating rod and rotating plate is against the object, so the clamping and fixing effect is good;

[0015] 2. Secondly, after each rotating rod and rotating plate abuts against an object, they will be disconnected from the first gear, thereby achieving a corresponding self-locking state, which is firm and reliable;

[0016] 3. In addition, when performing mechanical operations, the sensor can emit changes in electrical signals until the object is fixed, thus forming a reminder operation for the staff;

[0017] 4. Finally, after the mechanical operation experiment of the object is completed, by shaking the component, if the electrical signal emitted by the sensor produces periodic changes, it means that it is only affected by the movement of the rotating rod, and the side wall of the object has not been broken or notched. If the electrical signal emitted produces irregular changes, it means that the side wall of the object has been broken or notched, and the detection operation of the side wall of the object is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the internal connections of a moving frame in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the connection between the rotating plate and the moving frame in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0021] Figure 4 A top view schematic diagram of the connection between a rotating plate and a moving frame in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0022] Figure 5 This is a schematic diagram of the connection between a rotating plate, a limiting plate and a triangular plate in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the connection of the rotating plate, the limiting plate and the triangular plate at another angle in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0024] Figure 7 A schematic diagram of the connection between a first gear and a second gear in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0025] Figure 8 This is a schematic diagram of the connection between the round rod and the round table in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0026] Fig. 9 A cross-sectional connection diagram of a sleeve in a mechanical testing machine with a hydraulic power control system proposed by the present invention;

[0027] Fig.10 The present invention provides a schematic diagram of the connection between a second hydraulic cylinder and a limit rod in a mechanical testing machine with a hydraulic power control system.

[0028] In the figure: 1 body, 2 hydraulic equipment, 3 working plate, 4 clamping assembly, 401 first hydraulic cylinder, 402 moving frame, 403 connecting rod, 404 moving plate, 405 first rack, 406 rotating plate, 407 limit plate, 408 rotating rod, 409 first gear, 410 middle plate, 411 second gear, 412 fixed plate, 413 gantry rod, 414 second rack, 415 cam, 416 square rod, 417 control rod, 418 first spring, 419 control plate, 420 second spring, 421 triangle plate, 422 regulating plate, 423 sensor, 424 third spring, 425 regulating rod, 426 round table, 427 fourth spring, 428 second hydraulic cylinder, 429 limiting rod, 430 fixing ring, 431 connecting plate, 432 moving ring, 433 fifth spring, 434 moving rod, 435 first connecting hole, 436 second connecting hole, 437 third connecting hole, 438 connecting rod, 439 sixth spring, 440 sleeve, 441 bottom plate, 442 round rod, 443 seventh spring. DETAILED DESCRIPTION

[0029] See also Figure 1-Figure 10 A mechanical testing machine with a hydraulic power control system comprises a body 1, a bracket is fixedly connected to the upper side of the body 1, a hydraulic device 2 is fixedly connected to the upper side of the bracket, a working plate 3 is fixedly connected to the output end of the hydraulic device 2, and a clamping assembly 4 is fixedly connected to the working plate 3 and the outer side of the body 1;

[0030] The object to be tested is installed in the clamping assembly 4, and then the hydraulic device 2 is started through the body 1, and the hydraulic device 2 drives the working plate 3 to move upward to start the corresponding mechanical experiment. The above are all existing technologies and no redundant description is made;

[0031] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The clamping assembly 4 includes a first hydraulic cylinder 401 and a moving frame 402. The first hydraulic cylinder 401 is fixed on the moving frame 402, and the output shaft of the first hydraulic cylinder 401 passes through the moving frame 402 and is fixedly connected to a moving plate 404. A plurality of first racks 405 are fixedly connected to the lower side of the moving plate 404. A plurality of gantry rods 413 are fixedly connected to the inner wall of the moving frame 402. The outer sides of the plurality of gantry rods 413 are rotatably sleeved with first gears 409. The first gears 409 and the first racks 405 are meshed. The outer sides of the gantry rods 413 are also rotatably sleeved with second gears 411. A plurality of second racks 414 are slidably sleeved on the outer side of the moving frame 402. The plurality of second racks 414 are meshed with the second gears 411. A square rod 416 is slidably sleeved inside the second rack 414. The square rod One end of the square rod 416 is fixedly connected with a round table 426, and a fourth spring 427 is fixedly connected between the round table 426 and the second rack 414. The other end of the square rod 416 is fixedly connected with a rotating rod 408, and the outer side of the rotating rod 408 is rotatably connected with two groups of rotating plates 406. The outer side of the gantry rod 413 is rotatably sleeved with an intermediate plate 410, and the side wall of the intermediate plate 410 is fixedly connected with a second hydraulic cylinder 428. The output end of the second hydraulic cylinder 428 is fixedly connected with a limiting rod 429 through a connecting rod. The outer side of the first gear 409 is circumferentially provided with a plurality of second connecting holes 436, and the outer side of the second gear 411 is circumferentially provided with a plurality of first connecting holes 435. The outer side of the gantry rod 413 is fixedly sleeved with a fixed plate 412, and the side wall of the fixed plate 412 is circumferentially provided with a plurality of third connecting holes 437.

[0032] Under normal circumstances, the limiting rod 429 passes through the first connection hole 435 and the second connection hole 436. Next, when it is necessary to clamp and fix an object, the object is placed between all the rotating plates 406, and the first hydraulic cylinder 401 is started. The first hydraulic cylinder 401 drives the moving plate 404 to move downward, and the moving plate 404 drives the first rack 405 to move downward. The first rack 405 drives the first gear 409 to rotate counterclockwise. The first gear 409 drives the second gear 411 to rotate counterclockwise through the limiting rod 429, and the second gear 411 drives the second rack 414 to the right (with the first gear 411 rotating counterclockwise). Figure 5 ), the second rack 414 drives the square rod 416 to move rightward through the fourth spring 427, and the square rod 416 drives the rotating rod 408 to move rightward until the rotating rod 408 and the object are against each other, thereby completing the preliminary clamping and fixing operation of the object.

[0033] like Figure 5 A control assembly for controlling the rotation of the rotating plate 406 is installed in the moving frame 402, and the control assembly includes two groups of control rods 417 slidably sleeved on the side wall of the second rack 414, and both ends of the two groups of control rods 417 are fixedly connected to the same control plate 419, and a first spring 418 is fixedly connected between the control plate 419 and the second rack 414, and a triangular plate 421 is fixedly connected to the side wall of the rotating plate 406, and a second spring 420 is fixedly connected between the triangular plate 421 and the square rod 416, and the side wall of the rotating plate 406 is slidably sleeved. A regulating rod 425 is connected, one end of the regulating rod 425 is fixedly connected to the limit plate 407, the other end of the regulating rod 425 is fixedly connected to the regulating plate 422, a third spring 424 is fixedly connected between the regulating plate 422 and the rotating plate 406, a sensor 423 is also fixedly connected between the regulating plate 422 and the rotating plate 406, and multiple groups of protrusions are fixedly connected to the outer sides of the rotating plate 406 and the limit plate 407 to improve the friction between the rotating plate 406 and the limit plate 407, thereby better completing the clamping and fixing operation of the object;

[0034] First, the sensor 423 is a pressure sensor 423. The pressure sensor 423 is a device or apparatus that can sense pressure signals and convert the pressure signals into usable output electrical signals according to a certain rule. In addition, the two sensors 423 and the controller of the second hydraulic cylinder 428 are in a series state, that is, only when the two sensors 423 send corresponding electrical signals, the second hydraulic cylinder 428 will be started. When the rotating rod 408 and the object are against each other, the rotating rod 408 stops moving due to the obstruction of the object, but at this time the second gear 411 is still rotating, and the second gear 411 continues to drive the second rack 414 to move to the right. When the second rack 414 stretches the fourth spring 427, it drives the control rod 417 and the control plate 419 to move rightward as a whole. When the control plate 419 and the triangular plate 421 abut against each other, the triangular plate 421 and the rotating plate 406 are driven to rotate around the rotating rod 408 as a whole. The rotating plate 406 drives the limit plate 407 to rotate through the third spring 424, the regulating plate 422 and the regulating rod 425. When the regular object is clamped, the two limit plates 407 abut against the object at the same time. Under the obstruction of the object, the limit plate 407 stops moving. Under the influence of the second rack 414 continuing to move rightward, the control plate 419 continues to move as a whole. The limit plate 407 stops moving, but the rotating plate 406 continues to rotate, thereby stretching the third spring 424 until the limit plate 407 and the rotating plate 406 are against each other. At this time, the rotating plate 406 stops moving. At this time, the sensors 423 on both sides send corresponding electrical signals, causing the second hydraulic cylinder 428 to be activated. When clamping an irregular object, when one of the limit plates 407 is against the object, the limit plate 407 stops moving due to the obstruction of the object. Under the influence of the second rack 414 continuing to move to the right, the control plate 419 continues to move as a whole, and the limit plate 407 against the object stops moving, but the rotating plate 40 6 continues to rotate, thereby stretching the third spring 424 until the limit plate 407 and the rotating plate 406 abut against each other. At this time, the rotating plate 406 stops moving, but the rotating plate 406 on the other side does not abut against the limit plate 407. At this time, the control plate 419 continues to move as a whole until the limit plate 407 on the other side abuts against the object and the limit plate 407 and the rotating plate 406 abut against each other. At this time, the sensors 423 on both sides send corresponding electrical signals, causing the second hydraulic cylinder 428 to be activated. When the second hydraulic cylinder 428 is activated, the second hydraulic cylinder 428 drives the limit rod 429 to move through the connecting rod 403, and the limit rod 429 moves to the left (by Figure 7), until the limiting rod 429 moves out of the second connecting hole 436 and enters the third connecting hole 437, at which time the second gear 411 loses the rotational power of the first gear 409 and stops under the restriction of the fixed plate 412, thereby completing the self-locking operation of the rotating plate 406, and in the above working process, each rotating rod 408 and the rotating plate 406 are automatically adjusted, and each rotating rod 408 and the rotating plate 406 are against the object, and the clamping and fixing effect is good.

[0035] like Figure 7 , Figure 8 , Fig. 9 A shaking assembly for controlling the shaking of the rotating plate 406 is installed in the moving frame 402, and the shaking assembly includes a fixed ring 430 fixedly sleeved on the outside of the limit rod 429, and two groups of moving rods 434 are slidably sleeved on the side wall of the first gear 409, and one end of the two groups of moving rods 434 is fixedly connected to a moving ring 432, and the fixed ring 430 and the moving ring 432 are abutted against each other, and the other end of the two groups of moving rods 434 is fixedly connected to a cam 415, and a fifth spring 433 is fixedly connected between the cam 415 and the first gear 409, and the side wall of the moving frame 402 is slidably sleeved. A connecting plate 431 is connected, a connecting rod 438 is fixedly connected to the side wall of the connecting plate 431, a sixth spring 439 is fixedly connected between the connecting rod 438 and the moving frame 402, a sleeve 440 is also slidably sleeved on the outer side of the connecting rod 438, a seventh spring 443 is fixedly connected between the sleeve 440 and the connecting rod 438, a bottom plate 441 is fixedly connected to the outer side of the sleeve 440, a round rod 442 is fixedly connected to the side wall of the bottom plate 441, the round rod 442 and the round table 426 are against each other, and the outer sides of the cam 415 and the connecting plate 431 are both smoothly set;

[0036] First, after the mechanical test of the object is completed, the second hydraulic cylinder 428 is started, and the second hydraulic cylinder 428 drives the limiting rod 429 to move to the right until the limiting rod 429 moves out of the third connecting hole 437 and enters the second connecting hole 436. At this time, the first hydraulic cylinder 401 is started to make the movable plate 404 move slightly upward for a short distance. During this process, the limiting plate 407 and the rotating plate 406 do not abut against each other, but the limiting plate 407 still abuts against the object. During this process, the fifth spring 433 is always in a compressed state, and the fixed ring 430 drives the cam 415 to move through the moving ring 432 and the moving rod 434. When the limiting rod 429 stops moving, the connecting plate 431 is located between the cam 415 and the first gear 409 (during this process, the first gear 409 and the connecting plate 431 are in a stationary state, and only the cam 415 moves), and the cam 415 does not abut against the connecting plate 431 (such as Figure 7As shown), the second hydraulic cylinder 428 is started again, and the second hydraulic cylinder 428 drives the limiting rod 429 to move leftward through the connecting rod 403. During this process, the fifth spring 433 is always in a compressed state, and the fixing ring 430 drives the cam 415 to move through the moving ring 432 and the moving rod 434. When the cam 415 moves to the upper side of the connecting plate 431, the second hydraulic cylinder 428 is closed. At this time, the limiting rod 429 moves out of the second connecting hole 436, and the second gear 411 and the first gear 409 are in a disconnected state. The first hydraulic cylinder 401 is started again, so that the first hydraulic cylinder 401 drives the moving plate 404 to move upward, and the moving plate 404 drives the first rack 405 to move upward, and the first rack 405 drives the first gear 409 to rotate clockwise. The first gear 409 drives the cam 415 to rotate clockwise through the moving rod 434, and the cam 415 and the connecting plate 431 are counteracted. Under the action of the sixth spring 439, the connecting rod 438 is driven to move up and down. Under the action of , the round rod 442 is always against the round table 426, and the connecting rod 438 which moves up and down drives the sleeve 440 and the round rod 442 to move up and down. The round rod 442 and the round table 426 are against each other and drive the round table 426 to move back and forth relative to the second rack 414, and the second rack 414 drives the rotating rod 408 to move back and forth as a whole. Since the limiting plate 407 is always against the object, the rotating rod 408 which moves back and forth will cause the elastic force of the third spring 424 to change, and the object will be pulled out from between the rotating plates 406. During the pulling out process, the limiting plate 407 exerts a certain force on the side wall of the object, causing the electrical signal emitted by the sensor 423 to change all the time. If the electrical signal emitted by the sensor 423 changes periodically, it means that it is only affected by the movement of the rotating rod 408, and the side wall of the object has not been broken or notched. If the electrical signal emitted changes irregularly, it means that the side wall of the object has been broken or notched, thereby completing the detection operation of the side wall of the object.

[0037] In the present invention, an object is placed between all the rotating plates 406, and the first hydraulic cylinder 401 is started. The first hydraulic cylinder 401 drives the movable plate 404 to move downward, and the movable plate 404 drives the first rack 405 to move downward. The first rack 405 drives the first gear 409 to rotate counterclockwise. The first gear 409 drives the second gear 411 to rotate counterclockwise through the limit rod 429, and the second gear 411 drives the second rack 414 to the right (with the gear 414 rotating counterclockwise). Figure 5 ), the second rack 414 drives the square rod 416 to move rightward through the fourth spring 427, and the square rod 416 drives the rotating rod 408 to move rightward until the rotating rod 408 and the object are against each other, thereby completing the preliminary clamping and fixing operation of the object;

[0038] When the rotating rod 408 and the object collide, the rotating rod 408 stops moving due to the obstruction of the object, but at this time the second gear 411 is still rotating, and the second gear 411 continues to drive the second rack 414 to move rightward. While the second rack 414 stretches the fourth spring 427, it drives the control rod 417 and the control plate 419 to move rightward as a whole. When the control plate 419 and the triangular plate 421 collide, it drives the triangular plate 421 and the rotating plate 406 to rotate as a whole around the rotating rod 408. The rotating plate 406 is rotated by the third spring 427. The spring 424, the regulating plate 422 and the regulating rod 425 drive the limit plate 407 to rotate. When the regular object is clamped, the two limit plates 407 are simultaneously against the object. Under the obstruction of the object, the limit plate 407 stops moving. Under the influence of the second rack 414 continuing to move to the right, the control plate 419 continues to move as a whole, the limit plate 407 stops moving, but the rotating plate 406 continues to rotate, thereby stretching the third spring 424 until the limit plate 407 and the rotating plate 406 are against each other, and the rotating plate 406 stops moving. At this time, the sensors 423 on both sides send out corresponding electrical signals, causing the second hydraulic cylinder 428 to be activated. When the irregular object is clamped, when one of the limit plates 407 contacts the object, the limit plate 407 stops moving due to the obstruction of the object. Under the influence of the second rack 414 continuing to move to the right, the control plate 419 continues to move as a whole, and the limit plate 407 contacting the object stops moving, but the rotating plate 406 continues to rotate, thereby stretching the third spring 424 until the limit plate 407 contacts the rotating plate 406. At this time, the rotating plate 406 stops moving, but the rotating plate 406 on the other side and the limit plate 407 do not abut against each other. At this time, the control plate 419 continues to move as a whole until the limit plate 407 on the other side abuts against the object and the limit plate 407 and the rotating plate 406 abut against each other. At this time, the sensors 423 on both sides send corresponding electrical signals, causing the second hydraulic cylinder 428 to be activated. When the second hydraulic cylinder 428 is activated, the second hydraulic cylinder 428 drives the limit rod 429 to move through the connecting rod 403, and the limit rod 429 moves to the left (by Figure 7 43), until the limiting rod 429 moves out of the second connection hole 436 and enters the third connection hole 437, at which time the second gear 411 loses the rotational power of the first gear 409 and stops under the restriction of the fixing plate 412, thereby completing the self-locking operation of the rotating plate 406. In the above working process, each rotating rod 408 and the rotating plate 406 are automatically adjusted, and each rotating rod 408 and the rotating plate 406 are against the object, and the clamping and fixing effect is good;

[0039] The hydraulic device 2 is started by the body 1, and the hydraulic device 2 drives the working plate 3 to move upward, and the corresponding mechanical experiment begins. The above are all existing technologies and no redundant description is made;

[0040] After the mechanical test of the object is completed, the second hydraulic cylinder 428 is started, and the second hydraulic cylinder 428 drives the limiting rod 429 to move to the right until the limiting rod 429 moves out of the third connecting hole 437 and enters the second connecting hole 436. At this time, the first hydraulic cylinder 401 is started to make the movable plate 404 move slightly upward for a short distance. During this process, the limiting plate 407 and the rotating plate 406 do not abut against each other, but the limiting plate 407 still abuts against the object. During this process, the fifth spring 433 is always in a compressed state, and the fixed ring 430 drives the cam 415 to move through the moving ring 432 and the moving rod 434. When the limiting rod 429 stops moving, the connecting plate 431 is located between the cam 415 and the first gear 409 (during this process, the first gear 409 and the connecting plate 431 are in a stationary state, and only the cam 415 moves), and the cam 415 does not abut against the connecting plate 431 (such as Figure 7 As shown), the second hydraulic cylinder 428 is started again, and the second hydraulic cylinder 428 drives the limiting rod 429 to move leftward through the connecting rod 403. During this process, the fifth spring 433 is always in a compressed state, and the fixing ring 430 drives the cam 415 to move through the moving ring 432 and the moving rod 434. When the cam 415 moves to the upper side of the connecting plate 431, the second hydraulic cylinder 428 is closed. At this time, the limiting rod 429 moves out of the second connecting hole 436, and the second gear 411 and the first gear 409 are in a disconnected state. The first hydraulic cylinder 401 is started again, so that the first hydraulic cylinder 401 drives the moving plate 404 to move upward, and the moving plate 404 drives the first rack 405 to move upward, and the first rack 405 drives the first gear 409 to rotate clockwise. The first gear 409 drives the cam 415 to rotate clockwise through the moving rod 434, and the cam 415 and the connecting plate 431 are counteracted. Under the action of the sixth spring 439, the connecting rod 438 is driven to move up and down. Under the action of , the round rod 442 is always against the round table 426, and the connecting rod 438 which moves up and down drives the sleeve 440 and the round rod 442 to move up and down. The round rod 442 and the round table 426 are against each other and drive the round table 426 to move back and forth relative to the second rack 414, and the second rack 414 drives the rotating rod 408 to move back and forth as a whole. Since the limiting plate 407 is always against the object, the rotating rod 408 which moves back and forth will cause the elastic force of the third spring 424 to change, and the object will be pulled out from between the rotating plates 406. During the pulling out process, the limiting plate 407 exerts a certain force on the side wall of the object, causing the electrical signal emitted by the sensor 423 to change all the time. If the electrical signal emitted by the sensor 423 changes periodically, it means that it is only affected by the movement of the rotating rod 408, and the side wall of the object has not been broken or notched. If the electrical signal emitted changes irregularly, it means that the side wall of the object has been broken or notched, thereby completing the detection operation of the side wall of the object.

Claims

1. A mechanical testing machine with a hydraulic power control system, comprising a body (1), characterized in that: The upper side of the body (1) is fixedly connected to a bracket, the upper side of the bracket is fixedly connected to a hydraulic device (2), the output end of the hydraulic device (2) is fixedly connected to a working plate (3), the working plate (3) and the outer side of the body (1) are both fixedly connected to a clamping assembly (4), the clamping assembly (4) comprises a first hydraulic cylinder (401) and a moving frame (402), the first hydraulic cylinder (401) is fixed to the moving frame (402), and the output shaft of the first hydraulic cylinder (401) passes through the moving frame (402) and is fixedly connected to the moving plate (404), the lower side of the moving plate (404) is fixedly connected to a plurality of first racks (405), the inner side wall of the moving frame (402) is fixedly connected to a plurality of gantry rods (413), and the plurality of The outer side of the gantry rod (413) is rotatably sleeved with a first gear (409), the first gear (409) and the first rack (405) are meshed, the outer side of the gantry rod (413) is also rotatably sleeved with a second gear (411), the outer side of the moving frame (402) is slidably sleeved with multiple groups of second racks (414), the multiple groups of second racks (414) and the second gear (411) are meshed, a square rod (416) is slidably sleeved inside the second rack (414), one end of the square rod (416) is fixedly connected to a round table (426), a fourth spring (427) is fixedly connected between the round table (426) and the second rack (414), the other end of the square rod (416) is fixedly connected to a rotating rod (4 08), the outer side of the rotating rod (408) is rotatably connected to two groups of rotating plates (406), the outer side of the gantry rod (413) is rotatably sleeved with an intermediate plate (410), the side wall of the intermediate plate (410) is fixedly connected to a second hydraulic cylinder (428), the output end of the second hydraulic cylinder (428) is fixedly connected to a limit rod (429) through a connecting rod (403), the outer side of the first gear (409) is circumferentially opened with a plurality of groups of second connecting holes (436), the outer side of the second gear (411) is circumferentially opened with a plurality of groups of first connecting holes (435), the outer side of the gantry rod (413) is fixedly sleeved with a fixed plate (412), the side wall of the fixed plate (412) is circumferentially opened with a plurality of groups of third connecting holes (437), the A control assembly for controlling the rotation of the rotating plate (406) is installed in the moving frame (402), and the control assembly includes two groups of control rods (417) slidably sleeved on the side wall of the second rack (414), both ends of the two groups of control rods (417) are fixedly connected to the same control plate (419), a first spring (418) is fixedly connected between the control plate (419) and the second rack (414), a triangular plate (421) is fixedly connected to the side wall of the rotating plate (406), a second spring (420) is fixedly connected between the triangular plate (421) and the square rod (416), a regulating rod (425) is slidably sleeved on the side wall of the rotating plate (406), and one end of the regulating rod (425) is fixedly connected to the limiting plate (407).The other end of the regulating rod (425) is fixedly connected to a regulating plate (422), a third spring (424) is fixedly connected between the regulating plate (422) and the rotating plate (406), a sensor (423) is also fixedly connected between the regulating plate (422) and the rotating plate (406), the sensor (423) is a pressure sensor, a shaking assembly for controlling the shaking of the rotating plate (406) is installed in the moving frame (402), the shaking assembly comprises a fixed ring (430) fixedly sleeved on the outside of the limit rod (429), two groups of moving rods (434) are slidably sleeved on the side wall of the first gear (409), one end of the two groups of moving rods (434) is fixedly connected to the moving ring (432), the fixed The ring (430) and the moving ring (432) are against each other, the other ends of the two groups of moving rods (434) are fixedly connected with a cam (415), a fifth spring (433) is fixedly connected between the cam (415) and the first gear (409), a connecting plate (431) is slidably sleeved on the side wall of the moving frame (402), a connecting rod (438) is fixedly connected to the side wall of the connecting plate (431), a sixth spring (439) is fixedly connected between the connecting rod (438) and the moving frame (402), a sleeve (440) is also slidably sleeved on the outer side of the connecting rod (438), a seventh spring (443) is fixedly connected between the sleeve (440) and the connecting rod (438), and the sleeve (440) is provided with a plurality of springs (443). The outer side is fixedly connected with a bottom plate (441), the side wall of the bottom plate (441) is fixedly connected with a round rod (442), the round rod (442) and the round table (426) are against each other, the outer sides of the rotating plate (406) and the limiting plate (407) are fixedly connected with a plurality of groups of protrusions, the limiting rod (429) passes through the first connecting hole (435) and the second connecting hole (436), when the rotating rod (408) and the object are against each other, the rotating rod (408) stops moving due to the obstruction of the object, but at this time the second gear (411) is still rotating, the second gear (411) continues to drive the second rack (414) to move rightward, and when the control plate (419) and the triangular plate (421) are against each other, the triangular plate (421) is driven to rotate. 1) and the rotating plate (406) rotate as a whole with the rotating rod (408) as the center. The rotating plate (406) drives the limiting plate (407) to rotate through the third spring (424), the regulating plate (422) and the regulating rod (425). The second hydraulic cylinder (428) is started. The second hydraulic cylinder (428) drives the limiting rod (429) to move rightward. The fixed ring (430) drives the cam (415) to move through the moving ring (432) and the moving rod (434). During this process, the fifth spring (433) is always in a compressed state. When the cam (415) moves to the upper side of the connecting plate (431), the second hydraulic cylinder (428) is closed. At this time, the limiting rod (429) moves out of the second connecting hole (436).The second gear (411) and the first gear (409) are in a disconnected state, and the first hydraulic cylinder (401) is started again, so that the first hydraulic cylinder (401) drives the movable plate (404) to move upward, and the movable plate (404) drives the first rack (405) to move upward, and the first rack (405) drives the first gear (409) to rotate clockwise, and the first gear (409) drives the cam (415) to rotate clockwise through the movable rod (434), and the cam (415) and the connecting plate (431) are against each other.

2. A mechanical testing machine with a hydraulic power control system according to claim 1, characterized in that: The outer sides of the cam (415) and the connecting plate (431) are both smooth.

Images