Displacement detection device and detection method thereof

Abstract

The invention discloses a displacement detection device and a detection method thereof, and relates to the technical field of laser displacement sensors, the displacement detection device comprises a laser displacement sensor main body, and the outer wall of a protection cylinder is provided with a positioning calibration member connected with a first baffle plate and a second baffle plate. By arranging a position adjusting calibration piece, when laser beams emitted by a laser emitter irradiate the top of a first baffle, data displayed by a display screen are recorded, a U-shaped insertion plate is pulled and then rotated, a first position shifting rack shifts a second transmission straight gear to rotate by 90 degrees, and the position adjusting calibration piece is arranged to adjust the position of the first baffle. Therefore, a laser beam emitted by the laser emitter penetrates through the second guide hole to be projected on the second baffle, then a numerical value displayed on the display screen at the moment is recorded, the difference between the two groups of numerical values is calculated, and whether data detected by the laser displacement sensor body is accurate or not is judged by comparing whether the distances between the first baffle and the second baffle are equal or not. And the operation is simple, so that the calibration efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser displacement sensors, in particular to a displacement detection device and a detection method thereof. Background Art

[0002] Laser displacement sensor is a sensor that uses laser technology for measurement. It consists of a laser, a laser detector and a measuring circuit. It can accurately measure the position, displacement and other changes of the measured object without contact. It can measure precise geometric measurements such as displacement, thickness, vibration, distance and diameter. Laser has the excellent characteristic of good straightness.

[0003] Before the laser displacement sensor is put into use, it needs to be calibrated. The laser sensor is calibrated by detecting a gasket of known thickness to detect whether the distance at the detection point of the laser displacement sensor is accurate before it can be used. In this process, the laser on the laser displacement sensor needs to be irradiated on the placement plate, and then a gasket of known thickness is placed on the placement plate. Then, the value of the reading change on the laser displacement display is observed to see whether it is equal to the thickness of the gasket. After the detection is completed, the gasket is removed. The operation in this process is complicated. Each time the gasket is calibrated, it needs to be adjusted and placed directly under the laser displacement sensor. When the gasket is moved, it will cause wear between the gasket and the placement plate, which will affect the accuracy of subsequent calibrations. At the same time, it is inconvenient to adjust the angle of the laser displacement sensor, which will affect the detection range of the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a displacement detection device and a detection method thereof in order to solve the problem that a laser displacement sensor cannot be calibrated quickly and its angle cannot be adjusted.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a displacement detection device, comprising a laser displacement sensor body, a display screen is installed at one end of the laser displacement sensor body, a control button located below the display screen is installed at one end of the laser displacement sensor body, a laser emitter is installed at the bottom of the laser displacement sensor body, a positioning plate is installed at the top of the laser displacement sensor body, a multi-position reversing member is installed at the top of the positioning plate, the positioning plate is connected to a positioning flange through the multi-position reversing member, a protective cylinder is installed on the outer side of the laser emitter, a first baffle is rotatably connected to the inner side of the protective cylinder through a rotating shaft, a second baffle located below the first baffle is rotatably connected to the inner side of the protective cylinder through a rotating shaft, a second guide hole penetrating the first baffle is opened at the edge of the first baffle, a first guide hole penetrating the second baffle is opened at the edge of the second baffle, a distance from the top end face of the first baffle to the top end face of the second baffle is ten centimeters, and a position adjustment calibration member connected to the first baffle and the second baffle is provided on the outer wall of the protective cylinder.

[0006] As a further solution of the present invention: the positioning calibration component includes a second transmission spur gear installed on the outside of the first baffle and located on the outside of the protective cylinder, the first transmission spur gear located below the second transmission spur gear is installed on the outside of the second baffle, the outer wall of the protective cylinder is rotatably connected to a rotating connecting rod located between the second transmission spur gear and the first transmission spur gear through a bearing, a cam is installed on the outside of the rotating connecting rod, a support frame is provided on the outside of the rotating connecting rod, which is located on the side of the cam away from the protective cylinder and connected to the protective cylinder, a torsion spring is connected at the connection between the rotating connecting rod and the support frame through a slot, a hexagonal plug extending to the outside of the rotating connecting rod is inserted into the inside of the rotating connecting rod, a third reset spring connected to the inner wall of the rotating connecting rod is provided on the hexagonal plug, a U-shaped plug plate is installed at one end of the hexagonal plug The gear train is constituted of a plurality of gears, each of which is connected to a plurality of gears, and a plurality of gears are connected to the gear train of the plurality of gears. The gear train is constituted of a plurality of gears, each of which is connected to a plurality of gears of the plurality of gears. The plurality of gears are connected to the plurality of gears of the plurality of gears.

[0007] As a further solution of the present invention: the number of the locking holes is four, and the four locking holes are distributed at equal distances along the center of the movable snap ring.

[0008] As a further solution of the present invention: the multi-position reversing member includes a rotating coupling connected to the top of the positioning plate, a positioning disc is installed on the inner side of the rotating coupling, a pull pin is provided on one side of the positioning disc, a water tank located on one side of the rotating coupling is installed on the top of the positioning plate, a liquid pushing plate is plugged into the inner side of the water tank, a first return spring connected to the outer wall of the water tank is provided on the liquid pushing plate, an electromagnetic valve is installed on the side of the water tank away from the liquid pushing plate, a connecting hose is installed on the end of the electromagnetic valve away from the water tank, a swing frame located above the positioning plate is connected to the rotating coupling, and a rotating spring is fixed on the top of the swing frame. A reciprocating screw rod, a first piston rod is installed on the top of the reciprocating screw rod, the outer side of the first piston rod is sleeved with a piston sleeve connected to a connecting hose, a positioning flange is installed on the top of the piston sleeve, the inner sides of the reciprocating screw rod and the first piston rod are both provided with a cavity, the inner side of the cavity is plugged with a second piston rod, the bottom end of the second piston rod is provided with a direct-connected slide rail located on the outer side of the pull pin, a control switch electrically connected to the solenoid valve is provided on the laser displacement sensor body, a locking control unit connected to the control switch is provided on the side of the protective tube away from the support frame, and a movable slider connected to the piston sleeve is sleeved on the outer side of the reciprocating screw rod.

[0009] As a further solution of the present invention: a crescent pin which fits with the outer side of the reciprocating screw is arranged at the bottom of the movable slider.

[0010] As a further solution of the present invention: the diameter of the pull pin is equal to the width of the inner wall of the direct-connected slide rail, and the top of the second piston rod is in contact with the inner wall of the cavity.

[0011] As a further solution of the present invention: the locking control unit includes a first side frame installed on the side of the protective tube away from the support frame, the first side frame is installed with a second side frame on the side away from the protective tube, the second side frame is provided with an electromagnet, the first baffle is installed with a transfer plate located on the inner side of the first side frame on the side away from the second transmission spur gear, the transfer plate is provided with a rectangular slot, the inner side of the first side frame is plugged with a rectangular plug rod extending to the inner side of the second side frame, one end of the rectangular plug rod extends to the inner side of the rectangular slot, the end of the rectangular plug rod away from the transfer plate is installed with an iron block flush with the electromagnet, and the iron block is provided with a second return spring connected to the first side frame.

[0012] As a further solution of the present invention: the electromagnet is electrically connected to the control switch through a wire, and the distance between the iron block and the electromagnet is equal to the depth of the rectangular slot.

[0013] As a further solution of the present invention: the length and width of the rectangular slot are equal to the length and width of the end face of the rectangular plug rod.

[0014] The present invention also discloses a displacement detection method, which uses the above displacement detection device and includes the following steps:

[0015] S1: When using the laser displacement sensor body, first install the laser displacement sensor body on the external support frame through the positioning flange, and then adjust the direction of the laser projected by the laser emitter by operating the multi-position reversing element;

[0016] S2: Start the laser displacement sensor body, and make the laser emitter emit laser through the operation of the laser displacement sensor body. At this time, the laser endpoint emitted by the laser emitter will shine on the first baffle, and the value displayed on the display screen is recorded at this time;

[0017] S3: The first baffle is rotated 90 degrees by operating the position adjustment calibration part, so that the laser emitted by the laser transmitter passes through the second guide hole and irradiates the top of the second baffle. At this time, the value displayed on the display screen is recorded. When the difference between the two sets of values ​​is the same as the distance between the second baffle and the top of the first baffle, it means that the data measured by the laser displacement sensor body is accurate. At this time, the laser displacement sensor body can be used. If the difference between the two sets of values ​​is different from the distance between the second baffle and the top of the first baffle, it means that the data measured by the laser displacement sensor body has an error. At this time, the laser displacement sensor body can be repaired in time;

[0018] S4: After the calibration is completed, continue to operate the adjustment calibration piece to rotate the second baffle plate 90 degrees, so as to align the second guide hole with the first guide hole. At this time, the laser beam emitted by the laser transmitter will pass through the second guide hole and the first guide hole and irradiate the placement plate;

[0019] S5: Then record the displayed values ​​on the display screen at this time and place the part to be tested on the placement plate. At this time, record the displayed values ​​on the display screen, and calculate the thickness of the part by calculating the difference between the two sets of values.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By setting the adjustment calibration part, when the laser beam emitted by the laser emitter irradiates the top of the first baffle, the data displayed on the display screen is recorded, and the U-shaped plug plate is pulled and then rotated, so that the first shifting rack shifts the second transmission spur gear to rotate ninety degrees, so that the laser beam emitted by the laser emitter passes through the second guide hole and is projected on the second baffle. Then, the value displayed on the display screen at this time is recorded, and the difference between the two sets of values ​​is calculated. By comparing whether the distance between the first baffle and the second baffle is equal, it is judged whether the data detected by the laser displacement sensor body is accurate. The operation is simple, so as to improve the calibration efficiency. After use, the laser emitter is shielded by restoring the first baffle and the second baffle at the same time to prevent external dust from adhering to the surface of the laser emitter when the equipment is idle and affecting the detection accuracy;

[0022] 2. By setting a multi-position reversing member, after the laser displacement sensor body is installed through the positioning flange, the solenoid valve is opened through the control switch, and the laser displacement sensor body is rotated. At this time, the reciprocating screw rotates relative to the movable slider, so that the first piston rod moves relative to the piston cylinder. At this time, the aqueous solution inside the water tank will enter the piston cylinder or the aqueous solution in the piston cylinder will enter the water tank, and the laser displacement sensor body is swung. At this time, the rotating shaft rotates relative to the swing frame, so that the positioning disc drives the second piston rod to move through the pull pin and the direct slide rail, so that the second piston rod moves inside the cavity. After the adjustment is completed, the solenoid valve is closed through the control switch. At this time, the piston cylinder and the aqueous solution inside the cavity will lose the flow space, so as to fix the adjusted laser displacement sensor body, so that the direction of the laser beam emitted by the laser transmitter can be adjusted, thereby increasing the scope of application of the equipment;

[0023] 3. By setting a locking control unit, when the control switch is turned on, the solenoid valve is energized and closed, and the electromagnet is energized to operate. When the electromagnet is energized, the iron block will move toward the electromagnet under the action of magnetic adsorption, so that the electromagnet and the iron block are fitted together. At the same time, the rectangular plug is separated from the rectangular slot and the second reset spring is contracted, so that the adapter plate loses its limit, so that the first baffle has room for movement, and at the same time, it is prevented that the laser emitter is offset due to the operation of the positioning calibration component when the adjusted laser displacement sensor body is not limited, so as to realize the orderly operation of the multi-position switching component and the positioning calibration component. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of a multi-position switching element of the present invention;

[0026] Figure 3It is a schematic diagram of the connection between the positioning disc and the first piston rod of the present invention;

[0027] Figure 4 It is a schematic diagram of the protective tube structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the protective tube of the present invention;

[0029] Figure 6 It is a schematic diagram of the connection between the first baffle and the second baffle of the present invention;

[0030] Figure 7 It is a schematic diagram of the connection between the cam and the first baffle plate and the second baffle plate of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the locking control unit of the present invention.

[0032] In the figure: 1. laser displacement sensor body; 2. laser transmitter; 3. display screen; 4. control button; 501. protective tube; 502. positioning plate; 503. water tank; 504. control switch; 505. first side connecting frame; 506. second side connecting frame; 507. electromagnet; 508. positioning flange; 509. support frame; 510. movable snap ring; 511. piston connecting cylinder; 512. movable slider; 513. swing frame; 514. rotating shaft; 515. positioning disc; 516. liquid push plate; 517. first reset spring; 518. solenoid valve; 519. reciprocating screw rod; 520. connecting hose; 521. guide pin; 522. direct slide rail; 523. first piston rod; 524. second piston rod; 525. cavity; 526, iron block; 527, rectangular plug rod; 528, guide connecting plate; 529, first movable frame; 530, U-shaped plug plate; 531, hexagonal plug rod; 532, locking hole; 533, cam; 534, adapter plate; 535, second return spring; 536, first baffle plate; 537, second baffle plate; 538, rotating connecting rod; 539, third return spring; 540, first transmission spur gear; 541, second movable frame; 542, torsion spring; 543, shifting latch; 544, rectangular slot; 545, first guide hole; 546, second guide hole; 547, first shifting rack; 548, second shifting rack; 549, connecting pin; 550, fourth return spring; 551, second transmission spur gear; 552, guide slide groove. DETAILED DESCRIPTION

[0033] 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.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0035] See also Figures 1 to 8 In an embodiment of the present invention, a displacement detection device includes a laser displacement sensor body 1, a display screen 3 is installed at one end of the laser displacement sensor body 1, a control button 4 located below the display screen 3 is installed at one end of the laser displacement sensor body 1, a laser emitter 2 is installed at the bottom of the laser displacement sensor body 1, a positioning plate 502 is installed at the top of the laser displacement sensor body 1, a multi-position switching member is installed at the top of the positioning plate 502, the positioning plate 502 is connected to a positioning flange 508 through the multi-position switching member, a protective tube 501 is installed on the outer side of the laser emitter 2, and the protective tube 501 is installed on the outer side of the laser emitter 2. The inner side of 01 is rotatably connected to a first baffle plate 536 via a rotating shaft, and the interior of the protective tube 501 is rotatably connected to a second baffle plate 537 located below the first baffle plate 536 via a rotating shaft. A second guide hole 546 penetrating the first baffle plate 536 is opened at the edge of the first baffle plate 536, and a first guide hole 545 penetrating the second baffle plate 537 is opened at the edge of the second baffle plate 537. The distance from the top end face of the first baffle plate 536 to the top end face of the second baffle plate 537 is ten centimeters, and the outer wall of the protective tube 501 is provided with a positioning calibration part connected to the first baffle plate 536 and the second baffle plate 537.

[0036] In this embodiment: when the laser displacement sensor body 1 is used, the laser displacement sensor body 1 is first installed on the external support frame through the positioning flange 508, and then the direction of the laser projected by the laser emitter 2 is adjusted by operating the multi-position reversing member, and then the laser displacement sensor body 1 is started, and the laser emitter 2 is caused to emit laser through the operation of the laser displacement sensor body 1. At this time, the laser endpoint emitted by the laser emitter 2 will be irradiated on the first baffle 536. At this time, the value displayed on the display screen 3 is recorded, and then the first baffle 536 is rotated ninety degrees by operating the adjustment calibration member, so that the laser emitted by the laser emitter 2 passes through the second guide hole 546 and irradiates the top of the second baffle 537. At this time, the value displayed on the display screen 3 is recorded. When the difference between the two sets of values ​​is equal to the distance between the second baffle 537 and the top of the first baffle 536 If they are the same, it means that the data measured by the laser displacement sensor body 1 is accurate. At this time, the laser displacement sensor body 1 can be used. If the difference between the two sets of values ​​is different from the distance between the second baffle 537 and the top of the first baffle 536, it means that there is an error in the data measured by the laser displacement sensor body 1. At this time, the laser displacement sensor body 1 can be repaired in time. After the calibration is completed, continue to operate the adjustment calibration part to rotate the second baffle 537 ninety degrees to align the second guide hole 546 with the first guide hole 545. At this time, the laser beam emitted by the laser emitter 2 will pass through the second guide hole 546 and the first guide hole 545 and irradiate on the placement plate. Then record the displayed value on the display screen 3 at this time and place the part to be measured on the placement plate. At this time, record the displayed value on the display screen 3 and calculate the thickness of the part by calculating the difference between the two sets of values.

[0037] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7The position adjustment and calibration component includes a second transmission spur gear 551 installed on the outside of the first baffle 536 and located on the outside of the protective tube 501, a first transmission spur gear 540 located below the second transmission spur gear 551 is installed on the outside of the second baffle 537, and a rotating connecting rod 538 located between the second transmission spur gear 551 and the first transmission spur gear 540 is rotatably connected to the outer wall of the protective tube 501 through a bearing, a cam 533 is installed on the outside of the rotating connecting rod 538, and a position The cam 533 is on the side of the support frame 509 away from the protective tube 501 and connected to the protective tube 501. The connection between the rotating link 538 and the support frame 509 is connected to a torsion spring 542 through a slot. The interior of the rotating link 538 is plugged with a hexagonal plug 531 extending to the outside of the rotating link 538. The hexagonal plug 531 is provided with a third return spring 539 connected to the inner wall of the rotating link 538. A U-shaped plug plate 530 is installed at one end of the hexagonal plug 531. The pin 549 is connected to the protective tube 501 by a movable snap ring 510 installed at one end of the connecting pin 549, and a locking hole 532 is provided on the movable snap ring 510. A fourth return spring 550 connected to the support frame 509 is provided on the movable snap ring 510. A guide connecting plate 528 located above the second transmission spur gear 551 is installed on the outer wall of the protective tube 501, and the first movable frame 529 is plugged into the guide connecting plate 528. A guide groove 552 is provided on the side of the cam 533 away from the protective tube 501. The bottom of the first movable frame 529 A shift pin 543 located inside the guide slot 552 is installed, and a first shift rack 547 meshing with the second transmission spur gear 551 is arranged on the first movable frame 529. One side of the first transmission spur gear 540 is also connected to the second movable frame 541 through a guide connecting plate 528. A shift pin 543 located inside the guide slot 552 is also arranged on the top of the second movable frame 541. A second shift rack 548 meshing with the first transmission spur gear 540 is arranged on the second movable frame 541.

[0038] In this embodiment: when the laser beam emitted by the laser emitter 2 irradiates the top of the first baffle 536, the data displayed on the display screen 3 is recorded, and then the U-shaped plug plate 530 is pulled to separate one side of the U-shaped plug plate 530 from the locking card hole 532. At this time, the third return spring 539 shrinks with the movement of the hexagonal plug rod 531, and the U-shaped plug plate 530 is rotated, so that the U-shaped plug plate 530 drives the cam 533 to rotate through the hexagonal plug rod 531 and the rotating connecting rod 538. When the U-shaped plug plate 530 rotates ninety degrees, the first movable frame 529 is separated from the protrusion of the cam 533. At this time, the cam 533 is moved through the guide slot 552 and the shifting card pin 543. The first movable frame 529 is driven to move downward, so that the first shifting rack 547 shifts the second transmission spur gear 551 to rotate ninety degrees, so that the laser beam emitted by the laser transmitter 2 passes through the second guide hole 546 and is projected onto the second baffle 537. Then, the U-shaped plug plate 530 is loosened, so that the U-shaped plug plate 530 is buckled into the corresponding locking hole 532 under the action of the third reset spring 539. Then, the value displayed on the display screen 3 at this time is recorded, and the difference between the two sets of values ​​is calculated. By comparing whether the distance between the first baffle 536 and the second baffle 537 is equal, it is judged whether the data detected by the laser displacement sensor body 1 is accurate. The operation is simple. In this way, the calibration efficiency is improved. At the same time, the first baffle plate 536 and the second baffle plate 537 are rotated to prevent the second baffle plate 537 and the top of the first baffle plate 536 from being worn, so as to prevent the calibration accuracy from being affected by the wear of the second baffle plate 537 and the top of the first baffle plate 536. Then, the U-shaped plug plate 530 is pulled and rotated to make the protrusion of the cam 533 turn to the downward direction. At this time, the first movable frame 529 cannot move, and the second movable frame 541 moves downward, so that the second shifting rack 548 shifts the first transmission spur gear 540 to rotate, so that the second baffle plate 537 rotates ninety degrees, so that the laser emitter 2 The emitted laser beam passes through the second guide hole 546 and the first guide hole 545 and irradiates the placement plate. After the use of the laser displacement sensor body 1 is completed, the movable retaining ring 510 is pushed, so that the locking hole 532 loses the limit on the U-shaped plug plate 530. At this time, the hexagonal plug rod 531 will be restored under the action of the torsion spring 542, so as to make the first baffle plate 536 and the second baffle plate 537 turn to a horizontal state. This not only provides convenience for the subsequent use of the equipment, but also shields the laser emitter 2 by the first baffle plate 536 and the second baffle plate 537 to prevent external dust from adhering to the surface of the laser emitter 2 when the equipment is idle and affecting the accuracy of detection.

[0039] Please refer to Figure 4 , Figure 5 There are four locking holes 532 , and the four locking holes 532 are equidistantly distributed along the center of the movable snap ring 510 .

[0040] In this embodiment, by providing this structure, the U-shaped inserting plate 530 can be connected to the locking hole 532 when rotating 90 degrees or 180 degrees, thereby improving the accuracy of the rotation angle of the U-shaped inserting plate 530.

[0041] Please refer to Figure 1 , Figure 2 , Figure 3 The multi-position reversing member includes a rotating shaft 514 connected to the top of the positioning plate 502, a positioning disc 515 is installed on the inner side of the rotating shaft 514, and a pull pin 521 is provided on one side of the positioning disc 515. A water storage tank 503 located on one side of the rotating shaft 514 is installed on the top of the positioning plate 502, a liquid pushing plate 516 is inserted into the inner side of the water storage tank 503, and a first return spring 517 connected to the outer wall of the water storage tank 503 is provided on the liquid pushing plate 516. A solenoid valve 518 is installed on the side of the water storage tank 503 away from the liquid pushing plate 516, and a connecting hose 520 is installed on the end of the solenoid valve 518 away from the water storage tank 503. The rotating shaft 514 is connected to a swing frame 513 located above the positioning plate 502, and a reciprocating screw rod 519 is fixed on the top of the swing frame 513. A first piston rod 523 is installed on the top of the screw rod 519, and a piston sleeve 511 connected to the connecting hose 520 is sleeved on the outer side of the first piston rod 523, and a positioning flange 508 is installed on the top of the piston sleeve 511. A cavity 525 is opened on the inner side of the reciprocating screw rod 519 and the first piston rod 523, and a second piston rod 524 is inserted into the inner side of the cavity 525. A direct-connected slide rail 522 located on the outer side of the pull pin 521 is provided at the bottom end of the second piston rod 524. A control switch 504 electrically connected to the solenoid valve 518 is provided on the laser displacement sensor body 1, and a locking control unit connected to the control switch 504 is provided on the side of the protective tube 501 away from the support frame 509, and a movable slider 512 connected to the piston sleeve 511 is sleeved on the outer side of the reciprocating screw rod 519.

[0042] In this embodiment: after the laser displacement sensor body 1 is installed through the positioning flange 508, the solenoid valve 518 is opened through the control switch 504, and the laser displacement sensor body 1 is rotated. At this time, the reciprocating screw 519 rotates relative to the movable slider 512, so that the first piston rod 523 moves relative to the piston connecting cylinder 511. At this time, the aqueous solution inside the water storage tank 503 will enter the piston connecting cylinder 511 or the aqueous solution in the piston connecting cylinder 511 will enter the water storage tank 503, and the laser displacement sensor body 1 will be swung. At this time, the rotating shaft 514 rotates relative to the swing frame 5 13 is rotated, so that the positioning disc 515 drives the second piston rod 524 to move through the pull pin 521 and the direct-connected slide rail 522, so that the second piston rod 524 moves inside the cavity 525. After the adjustment is completed, the solenoid valve 518 is closed by controlling the switch 504. At this time, the piston sleeve 511 and the aqueous solution inside the cavity 525 will lose the flow space, so as to fix the laser displacement sensor body 1 after the adjustment, so that the direction of the laser beam emitted by the laser transmitter 2 can be adjusted, thereby increasing the application range of the equipment.

[0043] Please refer to Figure 2 , Figure 3 The bottom of the movable slider 512 is provided with a crescent pin that fits with the outer side of the reciprocating screw rod 519.

[0044] In this embodiment: by setting this structure, when the swing frame 513 rotates relative to the positioning flange 508, the reciprocating screw 519 moves relative to the movable slider 512, so as to adjust the direction of the laser emitter 2.

[0045] Please refer to Figure 3 The diameter of the pull pin 521 is equal to the width of the inner wall of the direct-connected slide rail 522 , and the top of the second piston rod 524 fits with the inner wall of the cavity 525 .

[0046] In this embodiment: a structure is provided to improve the synchronization between the rotation of the positioning disk 515 and the movement of the direct-connected slide rail 522 , thereby improving the stability of the subsequent positioning of the laser displacement sensor body 1 .

[0047] Please refer to Figure 1 , Figure 4 , Figure 8The locking control unit includes a first side connecting frame 505 installed on the side of the protective tube 501 away from the support frame 509, a second side connecting frame 506 is installed on the side of the first side connecting frame 505 away from the protective tube 501, an electromagnet 507 is arranged on the second side connecting frame 506, a transfer plate 534 located on the inner side of the first side connecting frame 505 is installed on the side of the first baffle 536 away from the second transmission spur gear 551, a rectangular slot 544 is opened on the transfer plate 534, a rectangular plug rod 527 extending to the inner side of the second side connecting frame 506 is inserted into the inner side of the first side connecting frame 505, one end of the rectangular plug rod 527 extends to the inner side of the rectangular slot 544, an iron block 526 flush with the electromagnet 507 is installed on the end of the rectangular plug rod 527 away from the transfer plate 534, and a second return spring 535 connected to the first side connecting frame 505 is arranged on the iron block 526.

[0048] In this embodiment: when the control switch 504 is turned on, the solenoid valve 518 is energized and closed, and the electromagnet 507 is energized and operated. When the electromagnet 507 is energized, the iron block 526 will move toward the electromagnet 507 under the action of magnetic adsorption, so that the electromagnet 507 and the iron block 526 are fitted together. At the same time, the rectangular plug 527 is separated from the rectangular slot 544 and the second return spring 535 is contracted, so that the adapter plate 534 loses its limit, so that the first baffle 536 has room for movement, and at the same time, it is prevented that the laser emitter 2 is offset when the adjustment calibration component is operated without limiting the adjusted laser displacement sensor body 1, so as to realize the orderly operation of the multi-position switching component and the adjustment calibration component.

[0049] Please refer to Figure 8 The electromagnet 507 is electrically connected to the control switch 504 through a wire, and the distance between the iron block 526 and the electromagnet 507 is equal to the depth of the rectangular slot 544 .

[0050] In this embodiment, by providing this structure, the rectangular insertion rod 527 is completely separated from the rectangular slot 544 when the electromagnet 507 contacts the iron block 526 .

[0051] Please refer to Figure 8 The length and width of the rectangular slot 544 are equal to the length and width of the end surface of the rectangular insertion rod 527.

[0052] In this embodiment, this structure is provided to increase the stability of the first baffle 536 after the rectangular insertion rod 527 is inserted into the rectangular slot 544 .

[0053] In combination with the above-mentioned displacement detection device, a displacement detection method is provided below, which specifically includes the following steps:

[0054] S1: First, install the laser displacement sensor body 1 on the external support frame through the positioning flange 508;

[0055] S2: Open the solenoid valve 518 by controlling the switch 504, rotate the laser displacement sensor body 1, and the reciprocating screw 519 rotates relative to the movable slider 512, so that the first piston rod 523 moves relative to the piston sleeve 511. At this time, the aqueous solution inside the water tank 503 will enter the piston sleeve 511 or the aqueous solution in the piston sleeve 511 will enter the water tank 503, and swing the laser displacement sensor body 1. At this time, the rotating shaft 514 rotates relative to the swing frame 513, so that the positioning disc 515 drives the second piston rod 524 to move through the pull pin 521 and the direct slide rail 522, so that the second piston rod 524 moves inside the cavity 525. After the adjustment is completed, close the solenoid valve 518 by controlling the switch 504, and the aqueous solution inside the piston sleeve 511 and the cavity 525 will lose the flow space, so as to fix the laser displacement sensor body 1 after the adjustment, so that the direction of the laser beam emitted by the laser emitter 2 can be adjusted, thereby increasing the application range of the equipment;

[0056] S3: When the control switch 504 is turned on, the solenoid valve 518 is powered on and closed, and the electromagnet 507 is powered on and operated. When the electromagnet 507 is powered on, the iron block 526 will move toward the electromagnet 507 under the action of magnetic adsorption, so that the electromagnet 507 and the iron block 526 are fitted together. At the same time, the rectangular plug 527 is separated from the rectangular slot 544, and the second return spring 535 is contracted, so that the adapter plate 534 loses the limit, so that the first baffle 536 has a movable space, and at the same time, it is prevented that the laser emitter 2 is offset when the adjustment calibration component is operated when the adjusted laser displacement sensor body 1 is not limited, so as to realize the orderly operation of the multi-position switching component and the adjustment calibration component;

[0057] S4: Start the laser displacement sensor body 1. When the laser beam emitted by the laser emitter 2 irradiates the top of the first baffle 536, the data displayed on the display screen 3 is recorded. Then, the U-shaped plug plate 530 is pulled so that one side of the U-shaped plug plate 530 is separated from the locking hole 532. At this time, the third reset spring 539 shrinks with the movement of the hexagonal plug rod 531, and the U-shaped plug plate 530 is rotated so that the U-shaped plug plate 530 drives the cam 533 to rotate through the hexagonal plug rod 531 and the rotating connecting rod 538. When the U-shaped plug plate 530 rotates ninety degrees, the first movable frame 529 is separated from the protrusion of the cam 533. At this time, the cam 533 drives the first movable frame 529 to move downward through the guide slot 552 and the shifting latch 543, so that the first shifting rack 547 shifts the second transmission spur gear 551 to rotate ninety degrees, so that the laser beam emitted by the laser emitter 2 passes through the second guide hole 546 and is projected onto the second baffle 537;

[0058] S5: Then, the U-shaped plug plate 530 is loosened, so that the U-shaped plug plate 530 is buckled into the corresponding locking hole 532 under the action of the third reset spring 539, and then the value displayed on the display screen 3 is recorded, and the difference between the two sets of values ​​is calculated. By comparing whether the distance between the first baffle plate 536 and the second baffle plate 537 is equal, it is judged whether the data detected by the laser displacement sensor body 1 is accurate. The operation is simple, so as to improve the calibration efficiency. At the same time, the first baffle plate 536 and the second baffle plate 537 are rotated to prevent the second baffle plate 537 and the first baffle plate 536 from being worn, so as to prevent the calibration accuracy from being affected by the wear of the second baffle plate 537 and the first baffle plate 536;

[0059] S6: Then continue to pull and rotate the U-shaped plug plate 530, so that the protrusion of the cam 533 turns to the downward direction. At this time, the first movable frame 529 cannot move, and the second movable frame 541 moves downward, so that the second shift rack 548 shifts the first transmission spur gear 540 to rotate, so that the second baffle 537 rotates ninety degrees, so that the laser beam emitted by the laser emitter 2 passes through the second guide hole 546 and the first guide hole 545 and irradiates on the placement plate. After the use of the body 1 is completed, the movable snap ring 510 is pushed, so that the locking hole 532 loses the limit on the U-shaped plug plate 530. At this time, the hexagonal plug rod 531 will be restored under the action of the torsion spring 542, so that the first baffle plate 536 and the second baffle plate 537 are turned to a horizontal state. This not only provides convenience for the subsequent use of the equipment, but also shields the laser emitter 2 through the first baffle plate 536 and the second baffle plate 537 to prevent external dust from adhering to the surface of the laser emitter 2 when the equipment is idle and affecting the accuracy of detection.

[0060] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A displacement detection device, comprising a laser displacement sensor body (1), characterized in that: A display screen (3) is installed at one end of the laser displacement sensor body (1); a control button (4) located below the display screen (3) is installed at one end of the laser displacement sensor body (1); a laser emitter (2) is installed at the bottom of the laser displacement sensor body (1); a positioning plate (502) is installed at the top of the laser displacement sensor body (1); a multi-position reversing member is installed at the top of the positioning plate (502); the positioning plate (502) is connected to a positioning flange (508) via the multi-position reversing member; a protective tube (501) is installed on the outside of the laser emitter (2); the inner side of the protective tube (501) is rotated by a rotating shaft A first baffle (536) is connected, and the interior of the protective tube (501) is rotatably connected to a second baffle (537) located below the first baffle (536) through a rotating shaft. A second guide hole (546) penetrating the first baffle (536) is opened at the edge of the first baffle (536), and a first guide hole (545) penetrating the second baffle (537) is opened at the edge of the second baffle (537). The distance from the top end face of the first baffle (536) to the top end face of the second baffle (537) is ten centimeters. The outer wall of the protective tube (501) is provided with a positioning calibration component connected to the first baffle (536) and the second baffle (537).

2. A displacement detection device according to claim 1, characterized in that: The position adjustment and calibration component comprises a second transmission spur gear (551) installed on the outside of the first baffle (536) and located on the outside of the protective tube (501); a first transmission spur gear (540) located below the second transmission spur gear (551) is installed on the outside of the second baffle (537); a rotating connecting rod (538) located between the second transmission spur gear (551) and the first transmission spur gear (540) is rotatably connected to the outer wall of the protective tube (501) via a bearing; a cam (533) is installed on the outside of the rotating connecting rod (538); and a cam (533) is provided on the outside of the rotating connecting rod (538) located on the cam (533). 33) a support frame (509) away from one side of the protective tube (501) and connected to the protective tube (501); a torsion spring (542) is connected to the connection between the rotating link (538) and the support frame (509) through a slot; a hexagonal plug rod (531) extending to the outside of the rotating link (538) is inserted into the interior of the rotating link (538); a third return spring (539) connected to the inner wall of the rotating link (538) is arranged on the hexagonal plug rod (531); a U-shaped plug plate (530) is installed at one end of the hexagonal plug rod (531); a connecting pin (542) is inserted into the support frame (509); 9), a movable snap ring (510) is installed at one end of the connecting pin (549), a locking hole (532) is provided on the movable snap ring (510), a fourth return spring (550) connected to the support frame (509) is provided on the movable snap ring (510), a guide connecting plate (528) located above the second transmission spur gear (551) is installed on the outer wall of the protective tube (501), a first movable frame (529) is plugged into the guide connecting plate (528), a guide slot (552) is provided on the side of the cam (533) away from the protective tube (501), and the first movable frame (529) ) is provided with a shifting latch (543) located inside the guide slot (552) at the bottom thereof, a first shifting rack (547) meshing with the second transmission spur gear (551) is provided on the first movable frame (529), one side of the first transmission spur gear (540) is also connected to the second movable frame (541) through a guide connecting plate (528), a shifting latch (543) located inside the guide slot (552) is also provided on the top of the second movable frame (541), and a second shifting rack (548) meshing with the first transmission spur gear (540) is provided on the second movable frame (541).

3. A displacement detection device according to claim 2, characterized in that: The number of the locking holes (532) is four, and the four locking holes (532) are distributed at equal distances along the center of the movable clamping ring (510).

4. A displacement detection device according to claim 2, characterized in that: The multi-position reversing member comprises a rotating shaft (514) connected to the top of a positioning plate (502), a positioning disc (515) is installed on the inner side of the rotating shaft (514), a pull pin (521) is provided on one side of the positioning disc (515), a water storage tank (503) is installed on the top of the positioning plate (502) and is located on one side of the rotating shaft (514), a liquid push plate (516) is inserted into the inner side of the water storage tank (503), and the liquid push plate (516) A first return spring (517) connected to the outer wall of the water tank (503) is arranged on the rotating shaft (514); a solenoid valve (518) is installed on the side of the water tank (503) away from the liquid pushing plate (516); a connecting hose (520) is installed on the end of the solenoid valve (518) away from the water tank (503); a swing frame (513) located above the positioning plate (502) is connected to the rotating shaft (514); a reciprocating screw rod (519) is fixed on the top of the swing frame (513) A first piston rod (523) is installed on the top of the reciprocating screw rod (519), and a piston sleeve (511) connected to a connecting hose (520) is sleeved on the outer side of the first piston rod (523). A positioning flange (508) is installed on the top of the piston sleeve (511). A cavity (525) is formed on the inner sides of the reciprocating screw rod (519) and the first piston rod (523). A second piston rod (524) is inserted into the inner side of the cavity (525). The bottom end of the plug rod (524) is provided with a directly connected slide rail (522) located outside the pull pin (521); the laser displacement sensor body (1) is provided with a control switch (504) electrically connected to the electromagnetic valve (518); a locking control unit connected to the control switch (504) is provided on the side of the protective tube (501) away from the support frame (509); and a movable slider (512) connected to the piston connecting tube (511) is sleeved on the outer side of the reciprocating screw rod (519).

5. A displacement detection device according to claim 4, characterized in that: The bottom of the movable slider (512) is provided with a crescent pin which fits with the outer side of the reciprocating screw rod (519).

6. A displacement detection device according to claim 4, characterized in that: The diameter of the pull pin (521) is equal to the width of the inner wall of the direct-connected slide rail (522), and the top of the second piston rod (524) fits the inner wall of the cavity (525).

7. A displacement detection device according to claim 4, characterized in that: The locking control unit comprises a first side connecting frame (505) installed on a side of the protective tube (501) away from the support frame (509); a second side connecting frame (506) is installed on a side of the first side connecting frame (505) away from the protective tube (501); an electromagnet (507) is arranged on the second side connecting frame (506); a transfer plate (534) located on the inner side of the first side connecting frame (505) is installed on a side of the first baffle plate (536) away from the second transmission spur gear (551); and the transfer plate (534) is installed on a side of the first baffle plate (536) away from the second transmission spur gear (551). 4) is provided with a rectangular slot (544), the inner side of the first side connecting frame (505) is plugged with a rectangular plug rod (527) extending to the inner side of the second side connecting frame (506), one end of the rectangular plug rod (527) extends to the inner side of the rectangular slot (544), and an iron block (526) flush with the electromagnet (507) is installed at one end of the rectangular plug rod (527) away from the adapter plate (534), and a second return spring (535) connected to the first side connecting frame (505) is arranged on the iron block (526).

8. A displacement detection device according to claim 7, characterized in that: The electromagnet (507) is electrically connected to the control switch (504) via a wire, and the distance between the iron block (526) and the electromagnet (507) is equal to the depth of the rectangular slot (544).

9. A displacement detection device according to claim 7, characterized in that: The length and width of the rectangular slot (544) are equal to the length and width of the end surface of the rectangular insertion rod (527).

10. A displacement detection method, characterized in that: A displacement detection device according to any one of claims 1 to 9 is used, comprising the following steps: S1: When using the laser displacement sensor body (1), the laser displacement sensor body (1) is first installed on the external support frame through the positioning flange (508), and then the direction of the laser projected by the laser emitter (2) is adjusted by operating the multi-position reversing element; S2: Start the laser displacement sensor body (1), and through the operation of the laser displacement sensor body (1), the laser emitter (2) emits laser light. At this time, the laser end point emitted by the laser emitter (2) will be irradiated on the first baffle (536), and the value displayed on the display screen (3) is recorded at this time; S3: The first baffle (536) is rotated ninety degrees by operating the position adjustment calibration member, so that the laser emitted by the laser emitter (2) passes through the second guide hole (546) and irradiates the top of the second baffle (537). At this time, the value displayed on the display screen (3) is recorded. When the difference between the two sets of values ​​is the same as the distance between the second baffle (537) and the top of the first baffle (536), it means that the data measured by the laser displacement sensor body (1) is accurate. At this time, the laser displacement sensor body (1) can be used. If the difference between the two sets of values ​​is different from the distance between the second baffle (537) and the top of the first baffle (536), it means that the data measured by the laser displacement sensor body (1) has an error. At this time, the laser displacement sensor body (1) can be repaired in time; S4: After the calibration is completed, continue to operate the adjustment calibration member to rotate the second baffle (537) by ninety degrees, so as to align the second guide hole (546) with the first guide hole (545). At this time, the laser beam emitted by the laser emitter (2) will pass through the second guide hole (546) and the first guide hole (545) and irradiate the placement plate; S5: Then, the displayed values ​​on the display screen (3) are recorded and the part to be tested is placed on the placement plate. The displayed values ​​on the display screen (3) are recorded at this time, and the thickness of the part is calculated by calculating the difference between the two sets of values.

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