Length laser measuring device capable of reducing dust interference

Abstract

The invention provides a length laser measurement device capable of reducing dust interference, and relates to the field of laser measurement devices.The length laser measurement device comprises a positioning assembly, the positioning assembly is composed of a fixing mechanism and an adjusting mechanism, a shell assembly is provided with two measurement bins, measurement and to-be-measured object placement and taking and other measurement preparation operations can be achieved at the same time, the working efficiency is greatly improved, and the measurement accuracy is improved. The shell assembly has a dust removal effect, dust removal operation can be carried out on the interior of the measurement bin during measurement each time, dust is prevented from entering the measurement bin to interfere measurement operation, and the problems that an existing laser measurement device is only provided with one measurement bin position, the use requirements of measurement and placement of a to-be-measured object for measurement cannot be synchronously met, the measurement efficiency is low, and the measurement cost is high are solved. And the dust cover is frequently opened and closed, so that dust is easy to enter the measurement bin position, and the laser measurement precision is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of laser measuring devices, and in particular to a length laser measuring device that reduces dust interference. Background Art

[0002] Laser measuring devices use laser technology to measure parameters such as target distance, displacement, and size. Their principle is generally based on the propagation characteristics of lasers. For example, distance is calculated by measuring the time difference between laser emission and reflected light, thereby deriving length information. Laser measuring devices offer advantages such as high accuracy, fast measurement speed, and non-contact operation, and have been widely used in numerous fields. For example, patent application number CN202410097945.3 discloses a laser measuring device. This application provides a laser measuring device comprising a motion module, a laser probe, and an anti-collision device. The laser probe is mounted on the motion module. The anti-collision device is mounted on the laser probe. If a collision occurs, the anti-collision device's internal circuitry disconnects, causing the laser measuring device to shut down or perform a safety action. During the commissioning, calibration, and operation of the laser measuring device, if a collision occurs, the anti-collision device's internal circuitry disconnects, causing the laser measuring device to shut down or perform a safety action. This prevents damage to the laser measuring device caused by collisions during commissioning, calibration, and operation.

[0003] The existing laser measuring device has the following disadvantages when in use: 1. There is only one measuring position, which cannot realize the simultaneous measurement and placement of the object for measurement, resulting in low measurement efficiency; 2. Although the outside of the measuring chamber is equipped with a dust cover, it needs to be opened every time the measuring object is taken in and placed, which can easily cause dust to enter the interior of the measuring chamber and affect the accuracy of laser measurement. Summary of the Invention

[0004] The present invention relates to a length laser measuring device that reduces dust interference. The device comprises a shell component and a positioning component. The shell component can realize the function of measuring the length of an object, and the measurement is fast and convenient. The shell component is provided with two measuring chambers, which can simultaneously realize measurement and preparation operations such as placing and taking the object to be measured, thereby greatly improving work efficiency. The shell component has a dust removal effect, and the interior of the measuring chamber can be dust-removed during each measurement to prevent dust from entering the interior of the measuring chamber and interfering with the measurement operation. The positioning component can realize lifting the fixture seat inside the measuring chamber of the upward-facing placement mechanism out of the chamber, thereby increasing the operating space when taking and placing the object to be measured. The device is flexible and convenient to use, and the fixture seat of the downward-facing placement mechanism is not interfered with, and can stably perform measurement operations. The device is flexible and convenient to use, and has extremely high flexibility and practicality.

[0005] The present invention provides a length laser measurement device that reduces dust interference, specifically comprising: a housing assembly and a positioning assembly; the housing assembly includes a mounting base, a measuring base, a switching motor, and two laser measurement modules; the measuring base is rotatably connected to the interior of the mounting base, and the switching motor is fixedly mounted on a side of the mounting base; the rotating shaft of the switching motor is drivingly connected to the rotating shaft of the measuring base, and the two laser measurement modules are respectively fixedly mounted on either side of the mounting base; the positioning assembly is composed of a fixing mechanism and an adjustment mechanism; The fixing mechanism includes a clamp seat, a positioning rod and a coupling rod. The clamp seat is inserted into the interior of the measuring seat, and the positioning rod is rotatably connected to the interior of the measuring seat. The coupling rod is rotatably connected to the interior of the measuring seat, and the coupling rod and the positioning rod are connected by a bevel gear set. The adjusting mechanism includes an adjusting motor, a driving shaft and a positioning block. The adjusting motor is fixedly mounted on the side of the mounting seat, and the driving shaft is rotatably connected to the interior of the mounting seat. The positioning block is inserted into the interior of the mounting seat.

[0006] Furthermore, an operating notch is provided on the top of the mounting seat, and a measuring chamber is provided inside the measuring seat, and the fixture seat is plugged into the inside of the measuring chamber.

[0007] Furthermore, the measuring chamber and the fixing mechanism constitute a placement mechanism, and there are two groups of placement mechanisms, which are staggered and symmetrically arranged with each other, and the measuring chamber opening of the placement mechanism used upwards coincides with the operation notch.

[0008] Furthermore, a dust removal duct and an exhaust duct are respectively provided on the left and right sides of the mounting seat, and the duct cross-sections of the dust removal duct and the exhaust duct facing the measuring seat are both arc-shaped, and connecting ducts are provided on both sides of the chamber body of the measuring chamber. When the measuring seat rotates forward, the connecting ducts on both sides of the measuring chamber can be connected to the dust removal duct and the exhaust duct respectively, and the dust removal duct is connected to the clean gas pumping equipment through a pipeline, and the measuring light beams emitted by the two laser measurement modules can be shot into the interior of the measuring chamber through the connecting duct of the downward-facing placement mechanism.

[0009] Furthermore, a thread is provided on the outside of the rod body of the positioning rod, and the positioning rod is screwed to the side surface of the clamp seat through the thread of the rod body.

[0010] Furthermore, the adjustment mechanism also includes a clutch electromagnet, and the clutch electromagnet is fixedly installed inside the mounting seat, and a separation magnetic block is provided on the side of the positioning block. When the clutch electromagnet is energized, it can magnetically adsorb the separation magnetic block, and the power on and off of the clutch electromagnet and the adjustment motor are in a NOT gate relationship.

[0011] Furthermore, a combined tension spring is provided on the other side of the positioning block, and two ends of the combined tension spring are respectively fixedly connected to the inside of the mounting seat and the side surface of the positioning block.

[0012] Furthermore, transmission friction discs are provided on opposite sides of the drive shaft and the coupling rod. When the power supply of the clutch electromagnet is disconnected, the two transmission friction discs are combined with each other for friction transmission under the action of the tension spring.

[0013] Furthermore, a synchronization groove is provided inside the driving shaft, and a synchronization rod with a regular polygonal cross section is provided outside the rotating shaft of the regulating motor, and the synchronization rod is inserted into the synchronization groove.

[0014] The present invention provides a length laser measuring device that reduces dust interference, which has the following beneficial effects: The shell component can realize the function of measuring the length of the object, and the measurement is fast and convenient. The shell component is provided with two measuring chambers, which can realize measurement and preparation operations such as placing and picking up the object to be measured at the same time, greatly improving work efficiency. The shell component has a dust removal effect, and the interior of the measuring chamber can be dust-removed during each measurement to prevent dust from entering the interior of the measuring chamber and interfering with the measurement operation. The positioning component can lift the fixture seat inside the measuring chamber of the upward-facing placement mechanism out of the chamber, thereby increasing the operating space when picking up and placing the object to be measured. It is flexible and convenient to use, and the fixture seat of the downward-facing placement mechanism is not interfered with, and can perform stable measurement operations. It is flexible and convenient to use, which improves the flexibility and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached figure: Figure 1 Shown is a schematic structural diagram of the present invention.

[0018] Figure 2 The figure shows the internal structure of the measuring seat of the present invention when it rotates in the forward direction.

[0019] Figure 3 The figure shows the internal structure of the device when measuring the length of an object.

[0020] Figure 4 The figure shows a schematic structural diagram of the housing assembly of the present invention after being disassembled.

[0021] Figure 5 The figure shows a structural schematic diagram of the disassembled fixing mechanism of the present invention.

[0022] Figure 6 The figure shows a schematic structural diagram of the disassembled adjusting mechanism of the present invention.

[0023] Figure 7 The figure shows the internal structure of the clutch electromagnet of the present invention when it is energized.

[0024] Figure 8 The figure shows the internal structure of the clutch electromagnet of the present invention when the power is off.

[0025] Figure 9 The present invention is shown Figure 8 Schematic diagram of the internal structure when the middle fixture seat is raised out of the measuring chamber.

[0026] Reference Signs List 1. Housing assembly; 101. Mounting base; 1011. Operation notch; 1012. Dust removal duct; 1013. Exhaust duct; 102. Measuring base; 1021. Measuring chamber; 1022. Connecting duct; 103. Switching motor; 2. Fixing mechanism; 201. Clamp seat; 202. Positioning rod; 203. Coupling rod; 3. Adjustment mechanism; 301. Adjustment motor; 3011. Synchronization rod; 302. Drive shaft; 3021. Transmission friction disc; 3022. Synchronization groove; 303. Positioning block; 3031. Separation magnet; 3032. Combination tension spring; 304. Clutch electromagnet; 4. Laser measurement module.

[0027] It should be noted that Figure 2 The hollow arrow indicates the direction of airflow. Figure 3 The solid arrow in the middle indicates the direction of the measurement beam emitted by the laser measurement module. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 described 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.

[0029] Please refer to Figures 1 to 9 :Example 1: The present invention provides a length laser measuring device for reducing dust interference, comprising: a housing assembly 1 and a positioning assembly; the housing assembly 1 includes a mounting base 101, a measuring base 102, a switching motor 103, and two laser measuring modules 4; the measuring base 102 is rotatably connected to the interior of the mounting base 101, and the switching motor 103 is fixedly mounted on a side of the mounting base 101; the rotating shaft of the switching motor 103 is drivingly connected to the rotating shaft of the measuring base 102, and the two laser measuring modules 4 are respectively fixedly mounted on either side of the mounting base 101; the positioning assembly comprises a fixing mechanism 2 and an adjustment mechanism 3; The fixing mechanism 2 includes a fixture base 201, a positioning rod 202 and a coupling rod 203. The fixture base 201 is inserted into the interior of the measuring base 102, and the positioning rod 202 is rotatably connected to the interior of the measuring base 102. The coupling rod 203 is rotatably connected to the interior of the measuring base 102, and the coupling rod 203 and the positioning rod 202 are connected by a bevel gear set. The adjustment mechanism 3 includes an adjustment motor 301, a drive shaft 302 and a positioning block 303. The adjustment motor 301 is fixedly mounted on the side of the mounting base 101, and the drive shaft 302 is rotatably connected to the interior of the mounting base 101. The positioning block 303 is inserted into the interior of the mounting base 101. The adjustment mechanism 3 also includes a clutch electromagnet 304, and the clutch electromagnet 304 is fixedly installed inside the mounting base 101. A separation magnetic block 3031 is provided on the side of the positioning block 303. When the clutch electromagnet 304 is energized, it can magnetically absorb the separation magnetic block 3031, and the power on and off of the clutch electromagnet 304 and the adjustment motor 301 are in a NOT gate relationship.

[0030] Among them, an operation notch 1011 is provided on the top of the mounting seat 101, and a measuring chamber 1021 is provided inside the measuring seat 102, and the fixture seat 201 is inserted into the interior of the measuring chamber 1021. The measuring chamber 1021 and the fixing mechanism 2 constitute a storage mechanism, and the storage mechanism is provided with two groups, and the two groups of storage mechanisms are symmetrically arranged with each other. The opening of the measuring chamber 1021 of the storage mechanism used upward coincides with the operation notch 1011, and connecting air ducts 1022 are provided on both sides of the chamber body of the measuring chamber 1021. The measuring beams emitted by the two laser measuring modules 4 can be emitted into the interior of the measuring chamber 1021 through the connecting air ducts 1022 of the storage mechanism used downward. In use, the housing assembly 1 can realize the use requirements of laser measurement of objects, and the operation is convenient and flexible. The interior of the measuring seat 102 is provided with two groups of storage mechanisms. By switching the two groups of storage mechanisms, the measurement operation of the object and the object taking and placing for measurement operation can be realized at the same time, and the work efficiency is nearly doubled. Taking the vertical use of the storage mechanism as an example, at this time, the measuring chambers 1021 of the two storage mechanisms are used upward and downward respectively, so that the measuring chamber 1021 used upward coincides with the operating notch 1011, and can perform operations such as positioning, fixing, and removing the object on the fixture seat 201 inside it. The measuring chamber 1021 used downward will measure the length of the object with the cooperation of the two laser measuring modules 4. Since the distance between the two laser measuring modules 4 is fixed, during the test, the measuring light beams of the two laser measuring modules 4 can be shot into the interior of the measuring chamber 1021 through the connecting air duct 1022, so that the distance between them and the object can be measured respectively, and the actual length of the object can be obtained by calculation. Here, the distance between the two laser measuring modules 4 is Da, and the distances between them and the object measured by the two laser measuring modules 4 are Db and Dc respectively, so that the measured length of the object Dd=Da-(Db+Dc), and the measurement is accurate and convenient.

[0031] Among them, the left and right sides of the mounting base 101 are respectively provided with a dust removal duct 1012 and an exhaust duct 1013, and the duct cross-sections of the dust removal duct 1012 and the exhaust duct 1013 facing the measuring base 102 are both arc-shaped. When the measuring base 102 rotates forward, the connecting ducts 1022 on both sides of the measuring chamber 1021 can be connected with the dust removal duct 1012 and the exhaust duct 1013 respectively, and the dust removal duct 1012 is connected to the clean gas pumping equipment through a pipeline. In use, the two sets of placement mechanisms can be switched by switching the motor 103, so as to realize the measurement and placement of objects in a cycle. It is flexible and convenient to use. The measuring base 102 can be driven to rotate forward by the switching motor 103. When the switching motor 103 drives the measuring base 102 to rotate forward, the placement mechanism used upward will switch to the downward use state, and the placement mechanism used downward will switch to the upward use state. At the same time, the upward-facing placement mechanism will automatically perform dust removal operations inside the measuring chamber 1021 when it is switched to the downward-facing placement state, thereby preventing dust from affecting the measurement results and ensuring accurate measurement data. When the upward-facing placement mechanism rotates, the opening of the measuring chamber 1021 is misaligned with the operation notch 1011. At this time, the measuring chamber 1021 is in a closed state, and the dust removal duct 1012 and the exhaust duct 1013 respectively coincide with the connecting ducts 1022 on both sides of the measuring chamber 1021. At this time, the clean gas pumping equipment can deliver clean gas into the interior of the measuring chamber 1021 through the dust removal duct 1012 and the connecting duct 1022, and discharge it from the connecting duct 1022 and the exhaust duct 1013. In this process, the airflow can carry the dust (if any) inside the measuring chamber 1021 and blow it out of the interior of the measuring chamber 1021, ensuring that the measuring chamber 1021 is clean and dust-free and stable to use.

[0032] Among them, the other side of the positioning block 303 is provided with a coupling tension spring 3032, and the two ends of the coupling tension spring 3032 are respectively fixedly connected to the inside of the mounting seat 101 and the side of the positioning block 303, and the driving shaft 302 and the coupling rod 203 are provided with a transmission friction disk 3021 on the opposite side. When the power supply of the clutch electromagnet 304 is disconnected, under the action of the coupling tension spring 3032, the two transmission friction disks 3021 are combined with each other for friction transmission. In use, the positioning component can lift the clamp seat 201 inside the measuring chamber 1021 of the placement mechanism used upward out of the chamber, thereby increasing the operating space when picking up and placing the object to be measured, and the operation is convenient and quick, and only the placement mechanism used upward can be linked with the adjustment mechanism 3, which will not affect The placement mechanism is facing downwards for measurement and is stable to use. Only the coupling rod 203 of the placement mechanism used upwards will be on the same axis as the drive shaft 302. Therefore, when the height of the fixture seat 201 of the placement mechanism needs to be adjusted, it is only necessary to turn on the power of the adjustment motor 301. Since the circuit relationship between the adjustment motor 301 and the clutch electromagnet 304 is a NOT gate relationship (NOT gate is a basic logical concept in digital circuits, which means that the occurrence of one event will inevitably lead to the non-occurrence of another event, and the states of the two are always opposite. In this application, the adjustment motor 301 is de-energized when the clutch electromagnet 304 is energized, and the clutch electromagnet 304 is de-energized when the adjustment motor 301 is energized), the clutch electromagnet 304 is in a de-energized state, so that Under the action of the tension spring 3032, friction transmission is combined between the coupling rod 203 and the transmission friction disk 3021 of the drive shaft 302. A synchronization groove 3022 is provided inside the drive shaft 302, and a synchronization rod 3011 with a regular polygonal cross-section is provided on the outside of the rotating shaft of the adjusting motor 301. The synchronization rod 3011 is inserted into the synchronization groove 3022. When the adjusting motor 301 rotates, the synchronization rod 3011 can drive the drive shaft 302 to rotate through the synchronization groove 3022. When the drive shaft 302 rotates, it can drive the coupling rod 203 to rotate through the transmission friction disk 3021. When the coupling 203 rotates, it can drive the positioning rod 202 to rotate through the bevel gear set. The rod body of the positioning rod 202 is provided with a thread, and the positioning rod 202 is threaded. The rod body thread is screwed onto the side of the clamp seat 201. When the positioning rod 202 rotates, it can drive the clamp seat 201 to rise and fall inside the measuring chamber 1021 through the rod body thread, thereby changing the use height of the measuring chamber 1021, facilitating operations such as taking and placing objects, and is flexible to use. After that, the clamp seat 201 is hidden inside the measuring chamber 1021 again, and the power supply of the adjustment motor 301 is disconnected. After the adjustment motor 301 is powered off, the clutch electromagnet 304 is energized and the magnetic block 3031 is separated by magnetic adsorption, so that the positioning block 303 drives the drive shaft 302 to move to release the friction transmission relationship between the two transmission friction disks 3021, thereby not affecting the subsequent rotation of the measuring seat 102, and the use is smooth and stable.

[0033] Specific usage and function of this embodiment: In the present invention, the housing assembly 1 can realize the demand for laser measurement of objects. Two sets of placement mechanisms are provided inside the measuring seat 102. By switching the two sets of placement mechanisms, the measurement operation of the object and the object placement and measurement operation can be realized at the same time, and the work efficiency is nearly doubled. Taking the vertical use of the two sets of placement mechanisms as an example, at this time, the measurement chambers 1021 of the two sets of placement mechanisms are used upward and downward respectively, so that the measurement chamber 1021 used upward coincides with the operation notch 1011, and the object can be positioned, fixed, and removed on the fixture seat 201 inside it. The measurement chamber 1021 used downward will achieve the measurement of the object length under the cooperation of the two laser measurement modules 4. Since the distance between the two laser measuring modules 4 is fixed, during the test, the measuring beams of the two laser measuring modules 4 can be shot into the interior of the measuring chamber 1021 through the connecting air duct 1022, so that the distance between them and the object can be measured respectively, and the actual length of the object can be obtained by calculation. Here, the distance between the two laser measuring modules 4 is Da, and the distances between them and the object measured by the two laser measuring modules 4 are Db and Dc respectively, so the measured length of the object Dd=Da-(Db+Dc). The two sets of placement mechanisms can be switched by switching the motor 103, so as to realize the measurement and placement of the object in a cycle. It is flexible and convenient to use. By switching the motor 103 to drive the measuring seat 102 to rotate forward, the switching When the motor 103 drives the measuring seat 102 to rotate forward, the placement mechanism for upward use will switch to the downward use state, and the placement mechanism for downward use will switch to the upward use state. At the same time, the placement mechanism for upward use will automatically realize the dust removal operation inside the measuring chamber 1021 when it switches to the downward use state, thereby avoiding the influence of dust on the measurement results and ensuring the accuracy of the measurement data. When the placement mechanism for upward use rotates, the opening of the measuring chamber 1021 is misaligned with the operating notch 1011. At this time, the measuring chamber 1021 is in a closed state, and the dust removal duct 1012 and the exhaust duct 1013 respectively coincide with the connecting ducts 1022 on both sides of the measuring chamber 1021. At this time, the clean gas pumping equipment can pass the clean gas through the dust removal duct 1012 and the connecting air duct 1022 are sent into the interior of the measuring chamber 1021, and are discharged from the connecting air duct 1022 and the exhaust air duct 1013. During this process, the air flow can carry the dust (if any) inside the measuring chamber 1021 and blow it out of the interior of the measuring chamber 1021, ensuring that the measuring chamber 1021 is clean and dust-free. The positioning component can lift the fixture seat 201 inside the measuring chamber 1021 of the upward-facing placement mechanism out of the chamber, thereby increasing the operating space when taking and placing the object to be measured. The operation is convenient and fast, and only the upward-facing placement mechanism can be linked with the adjustment mechanism 3, which will not affect the placement mechanism used for downward measurement, and is stable to use. Only the coupling rod 203 of the upward-facing placement mechanism will be on the same axis as the drive shaft 302.Therefore, when the height of the clamp seat 201 of the storage mechanism needs to be adjusted, it is only necessary to turn on the power of the adjustment motor 301. Since the circuit relationship between the adjustment motor 301 and the clutch electromagnet 304 is a NOT gate relationship (NOT gate is a basic logical concept in digital circuits, which means that the occurrence of one event will inevitably lead to the non-occurrence of another event, and the states of the two are always opposite. In this application, when the clutch electromagnet 304 is energized, the adjustment motor 301 is de-energized, and when the adjustment motor 301 is energized, the clutch electromagnet 304 is de-energized). At this time, the clutch electromagnet 304 is in a power-off state, so under the action of the tension spring 3032, friction transmission is combined between the coupling rod 203 and the transmission friction disk 3021 of the drive shaft 302. At this time, when the adjustment motor 301 rotates, the synchronization rod 3011 can drive the drive shaft 302 to rotate through the synchronization groove 3022, and the drive shaft When 302 rotates, it can drive the coupling rod 203 to rotate through the transmission friction disk 3021. When the coupling rod 203 rotates, it can drive the positioning rod 202 to rotate through the bevel gear set. When the positioning rod 202 rotates, it can drive the fixture seat 201 to rise and fall inside the measuring chamber 1021 through the rod body thread, thereby changing the use height of the measuring chamber 1021, facilitating operations such as taking and placing objects, and being flexible in use. After that, after the fixture seat 201 is hidden inside the measuring chamber 1021 again, the power supply of the adjustment motor 301 can be disconnected. After the adjustment motor 301 is powered off, the clutch electromagnet 304 is energized to separate the magnetic block 3031 through magnetic attraction, so that the positioning block 303 drives the drive shaft 302 to move, releasing the friction transmission relationship between the two transmission friction disks 3021, thereby not affecting the subsequent rotation of the measuring chamber 102.

Claims

1. A length laser measuring device that reduces dust interference, characterized in that: include: A housing assembly (1) and a positioning assembly; the housing assembly (1) comprises a mounting base (101), a measuring base (102), a switching motor (103) and two laser measuring modules (4); the measuring base (102) is rotatably connected to the interior of the mounting base (101), and the switching motor (103) is fixedly mounted on a side of the mounting base (101); a rotating shaft of the switching motor (103) is transmission-connected to a rotating shaft of the measuring base (102), and the two laser measuring modules (4) are respectively fixedly mounted on both sides of the mounting base (101); and the positioning assembly comprises a fixing mechanism (2) and an adjusting mechanism (3); The fixing mechanism (2) comprises a fixture seat (201), a positioning rod (202) and a coupling rod (203); the fixture seat (201) is inserted into the interior of the measuring seat (102), and the positioning rod (202) is rotatably connected to the interior of the measuring seat (102); the coupling rod (203) is rotatably connected to the interior of the measuring seat (102), and the coupling rod (203) and the positioning rod (202) are connected to each other through a bevel gear set; the adjusting mechanism (3) comprises an adjusting motor (301), a driving shaft (302) and a positioning shift block (303); the adjusting motor (301) is fixedly mounted on a side of the mounting seat (101), and the driving shaft (302) is rotatably connected to the interior of the mounting seat (101); and the positioning shift block (303) is inserted into the interior of the mounting seat (101).

2. The length laser measuring device for reducing dust interference according to claim 1, characterized in that: An operating notch (1011) is provided on the top of the mounting seat (101), and a measuring chamber (1021) is provided inside the measuring seat (102), and the fixture seat (201) is plugged into the inside of the measuring chamber (1021).

3. The length laser measuring device for reducing dust interference according to claim 2, characterized in that: The measuring chamber (1021) and the fixing mechanism (2) form a storage mechanism, and the storage mechanism is provided with two groups. The two groups of storage mechanisms are arranged symmetrically and staggered with each other, and the opening of the measuring chamber (1021) of the storage mechanism used upwards overlaps with the operating notch (1011).

4. The length laser measuring device for reducing dust interference according to claim 3, characterized in that: The left and right sides of the mounting seat (101) are respectively provided with a dust removal air duct (1012) and an exhaust air duct (1013), and the air duct cross-sections of the dust removal air duct (1012) and the exhaust air duct (1013) on the side facing the measuring seat (102) are both arc-shaped. Connecting air ducts (1022) are provided on both sides of the chamber body of the measuring chamber (1021). When the measuring seat (102) rotates forward, the connecting air ducts (1022) on both sides of the measuring chamber (1021) can be connected to the dust removal air duct (1012) and the exhaust air duct (1013) respectively. The dust removal air duct (1012) is connected to the clean gas pumping equipment through a pipeline, and the measuring light beams emitted by the two laser measuring modules (4) can be projected into the interior of the measuring chamber (1021) through the connecting air duct (1022) of the downwardly used placement mechanism.

5. The length laser measuring device for reducing dust interference according to claim 4, characterized in that: The rod body of the positioning rod (202) is provided with a thread on the outside, and the positioning rod (202) is screwed onto the side surface of the clamp seat (201) through the rod body thread.

6. The length laser measuring device for reducing dust interference according to claim 5, characterized in that: The regulating mechanism (3) further comprises a clutch electromagnet (304), and the clutch electromagnet (304) is fixedly mounted inside the mounting seat (101). A separation magnetic block (3031) is provided on the side of the positioning block (303). When the clutch electromagnet (304) is energized, the separation magnetic block (3031) can be magnetically attracted. The power on and off of the clutch electromagnet (304) and the regulating motor (301) are in a NOT gate relationship.

7. The length laser measuring device for reducing dust interference according to claim 6, characterized in that: A combined tension spring (3032) is provided on the other side of the positioning block (303), and two ends of the combined tension spring (3032) are respectively fixedly connected to the interior of the mounting seat (101) and the side surface of the positioning block (303).

8. The length laser measuring device for reducing dust interference according to claim 7, characterized in that: Transmission friction discs (3021) are provided on opposite sides of the drive shaft (302) and the coupling rod (203). When the power supply of the clutch electromagnet (304) is disconnected, the two transmission friction discs (3021) are coupled to each other for friction transmission under the action of the tension spring (3032).

9. The length laser measuring device for reducing dust interference according to claim 8, characterized in that: A synchronization groove (3022) is provided inside the driving shaft (302), and a synchronization rod (3011) having a regular polygonal cross section is provided outside the rotating shaft of the regulating motor (301), and the synchronization rod (3011) is inserted into the synchronization groove (3022).

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