Roadway handheld three-dimensional laser scanning device capable of automatically deflecting and use method of roadway handheld three-dimensional laser scanning device

Abstract

The invention relates to an automatic deflection roadway handheld three-dimensional laser scanning device and a use method thereof, and the device comprises an outer housing which is provided with a scanning head and a grab handle; the driving assembly is arranged in the outer shell and connected with the scanning head, and the driving assembly can drive the scanning head to deflect in a reciprocating mode relative to the outer shell; the positioning piece is connected with the rotating shaft of the scanning head; the pushing assembly is connected with the grab handle, and when the grab handle rotates relative to the outer shell, the pushing assembly can be matched with the positioning piece so that the scanning head can be corrected to the middle of the deflection stroke of the scanning head; the protective cover is rotationally mounted on the outer shell; the abutting structure is connected with the protective cover and the pushing assembly, the abutting structure can drive the protective cover to deflect upwards after the scanning head returns to the middle of the deflection stroke of the scanning head, the unfolding and folding processes are simplified, and the scanning head is further protected.

Description

Technical Field

[0001] The invention relates to an automatically deflecting handheld three-dimensional laser scanning device for a lane and a method for using the device. Background Art

[0002] Roadways excavated for coal mine production, as an essential component of minefield development, play a crucial role in coal mine safety. By regulating wind speed and volume within the roadway, air can be kept flowing smoothly through the mine, ensuring fresh air within the excavation space and providing a relatively good working environment for miners. Therefore, the structural safety of the surrounding rock of underground mine roadways is crucial to coal mine safety.

[0003] The collection and analysis of information on the surrounding rock structure of underground mine tunnels mainly rely on supporting equipment such as 3D laser scanners, high-precision Leica measuring total stations, target balls and data processing software. Among these related equipment, 3D laser scanners play a decisive role in the accuracy of information collection. Considering that the existing 3D laser scanners used for information collection on the surrounding rock structure of underground mine tunnels are mostly handheld, after use, the handle needs to be disassembled and the 3D laser scanner is placed in a protective box. On the one hand, this requires reassembly before the next use, resulting in complicated operating procedures. On the other hand, the 3D laser scanner body and the handle are placed separately, which is easy to be lost, increasing the difficulty of daily storage and management. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic deflection handheld three-dimensional laser scanning device for lanes and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An automatic deflection handheld three-dimensional laser scanning device for lanes, comprising: An outer shell, wherein a scanning head and a handle are provided on the outer shell; A drive assembly is disposed in the outer shell and connected to the scanning head, wherein the drive assembly is capable of driving the scanning head to reciprocate relative to the outer shell; A positioning member connected to the rotating shaft of the scanning head; a pushing assembly connected to the handle, and capable of cooperating with the positioning member when the handle rotates relative to the outer shell to return the scanning head to the middle of its deflection stroke; A protective cover is rotatably mounted on the outer shell; The abutment structure connects the protective cover and the pushing assembly. The abutment structure can drive the protective cover to deflect upward after the scanning head is rectified to the middle of its deflection stroke.

[0006] As a further solution of the present invention: the handle is rotatably connected to the outer shell, and a locking assembly is provided at the connection between the two; The locking assembly includes a fixed shaft mounted on the outer shell, a telescopic sleeve slidably sleeved on the fixed shaft, the telescopic sleeve and the fixed shaft are connected via a limiting structure, and a cylindrical spring sleeved on the fixed shaft, one end of the cylindrical spring is connected to the end of the fixed shaft, and the other end is connected to the telescopic sleeve; The rotating shaft of the handle is a hollow structure, and the telescopic sleeve can pass through the rotating shaft of the handle. A convex shaft is further provided on the inner wall of the rotating shaft of the handle, and the convex shaft is slidably matched with a limiting groove provided on the outer side of the telescopic sleeve.

[0007] As a further solution of the present invention: the limiting structure includes a limiting groove arranged along the length direction of the fixed shaft and a limiting block arranged on the inner wall of the telescopic sleeve, and the limiting groove is slidably connected to the limiting block.

[0008] As a further solution of the present invention: the limiting groove includes two groups of straight grooves arranged along the axial direction of the telescopic sleeve, and the two groups of straight grooves are connected by a spiral groove arranged in a spiral shape along the axial direction of the telescopic sleeve.

[0009] As a further solution of the present invention: the drive assembly includes a drive motor installed in the outer shell, the output shaft of the drive motor is connected to a turntable, and a grooved wheel is rotatably installed at an eccentric position of the turntable; The driving assembly further comprises a deflection rod connected to the rotating shaft of the scanning head. The deflection rod is provided with a hysteresis groove along its length, and the groove wheel can roll in the hysteresis groove.

[0010] As a further solution of the present invention: a first gear is coaxially connected to the rotating shaft of the scanning head, the first gear is engaged with a second gear rotatably mounted on the outer shell, and the second gear is connected to the positioning member; A guide groove and a positioning groove are provided on a side of the positioning member facing away from the outer shell, and two symmetrical inclined guide surfaces are formed on the positioning groove.

[0011] As a further embodiment of the present invention, the pushing assembly includes a sliding member disposed on the outer shell, wherein a sliding connection portion and a positioning shaft are provided on a side of the sliding member facing the outer shell, the sliding connection portion is slidably connected to a guide member mounted on the outer shell, and the positioning shaft is capable of moving within the positioning groove and the guide groove; A hinge rod is rotatably mounted on the sliding member, and one end of the hinge rod away from the sliding member is rotatably connected to the handle.

[0012] As a further solution of the present invention: a connecting piece is provided on the outer shell, and the connecting piece is rotatably connected to the rotating shaft of the protective cover; The abutment structure includes a connecting plate connected to the rotating shaft of the protective cover and a bracket connected to the sliding member, and an abutment wheel is rotatably mounted on one end of the bracket away from the sliding member, and the abutment wheel is adapted to the connecting plate; A stopper kit is also provided between the connecting piece and the rotating shaft of the protective cover.

[0013] As a further solution of the present invention: the stop kit includes a limiting protrusion arranged on the protective cover shaft, and the limiting protrusion is adapted to the stop portion arranged on the connecting member.

[0014] A method for using the automatic deflection handheld three-dimensional laser scanning device for a laneway comprises the following steps: Step 1: Unfold the handle by locking the assembly, and the protective cover will also open; Step 2: Start the drive assembly, which can drive the scanning head to swing back and forth to perform the scanning operation; Step 3: After the scan is completed, the assembly and the handle are unlocked by retracting the assembly, and the handle is rotated relative to the outer shell; Step 4: As the handle rotates, the push assembly can return the scanning head to the middle of its deflection stroke. At the same time, the handle continues to rotate, and the protective cover can deflect upward to protect the scanning head; Step 5: Place the folded scanning device into the protective box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The locking assembly is provided so that when in use, the convex shaft cooperates with the two pre-set straight grooves, so that the handle can be stably retracted and deployed. Based on this, on the one hand, the storage space of the entire device can be reduced, and the handle does not need to be disassembled separately, which reduces the difficulty of operation during the storage and deployment process. On the other hand, the position state of the scanning head can be made more stable during the collection of coal mine tunnel structure information, thereby improving the detection effect. The push assembly is provided so that when the handle is deflected to be retracted, the positioning shaft can cooperate with the positioning slot and the guide slot, so that the scanning head rotates to the middle of its deflection stroke. This can prevent the protective cover from interfering with the scanning head during the subsequent deflection of the protective cover, thereby protecting the structure of the scanning head to a certain extent. By setting up the abutment structure, the protective cover can be deflected, so that after the scanning head moves to the middle of the stroke, the protective cover can be deflected to protect the scanning head, reducing the risk of damage to the scanning head, and when the handle is in the unfolded state, the protective cover can remain in a horizontal state to prevent affecting the scanning operation of the scanning head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a structural diagram of an embodiment of a handheld three-dimensional laser scanning device for a tunnel with automatic deflection.

[0017] Figure 2 This is a structural schematic diagram from another angle of an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for tunnels.

[0018] Figure 3 for Figure 2 A magnified view of the structure at point A.

[0019] Figure 4 This is a structural exploded diagram of the locking assembly in an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for tunnels.

[0020] Figure 5 This is a schematic diagram of the internal structure of the outer shell of an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for tunnels.

[0021] Figure 6 for Figure 5 Schematic diagram of the structure from another angle.

[0022] Figure 7 This is a structural schematic diagram of the positioning part, pushing assembly, protective cover and abutment structure in an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for tunnels.

[0023] Figure 8 This is a structural exploded diagram of the pushing component in an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for tunnels.

[0024] Figure 9 This is a schematic structural diagram of a stop kit in an embodiment of an automatically deflecting handheld three-dimensional laser scanning device for a lane.

[0025] In the figure: 1. outer shell; 2. handle; 201. convex shaft; 3. scanning head; 4. fixed shaft; 401. limiting groove; 5. cylindrical spring; 6. telescopic sleeve; 601. limit block; 602. straight groove; 603. spiral groove; 7. pushing part; 8. driving motor; 9. turntable; 10. groove wheel; 11. deflection rod; 12. retardation groove; 13. arc-shaped partition; 14. first gear; 15. second gear; 16. positioning member; 1601. guide groove; 1602. positioning groove; 17. hinged rod; 18. sliding member; 1801. sliding connection; 19. positioning shaft; 20. guide member; 21. bracket; 22. abutting wheel; 23. protective cover; 2301. limiting protrusion; 24. connecting member; 2401. stopper; 25. connecting plate. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0027] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] See also Figures 1 to 9 In an embodiment of the present invention, a handheld three-dimensional laser scanning device for a tunnel with automatic deflection includes: an outer shell 1, a driving component, a positioning member 16, a pushing component, a protective cover 23 and an abutment structure, so that when in use, the convex shaft 201 cooperates with the two pre-two sets of straight grooves 602 to enable the handle 2 to have a stable retracted and unfolded state. Based on this, on the one hand, the storage space of the entire device can be reduced, and the handle 2 does not need to be disassembled separately, which reduces the difficulty of operation during the storage and unfolding process. On the other hand, the position state of the scanning head 3 can be made more stable during the collection of surrounding rock structure information of the tunnel under the mine, thereby improving the accuracy of the detection result.

[0029] The outer shell 1 is provided with a scanning head 3 and a handle 2, wherein the outer shell 1 is provided with an arc-shaped through groove, and the scanning head 3 is provided with an arc-shaped partition 13 adapted to the arc-shaped through groove. Furthermore, the handle 2 is rotatably connected to the outer shell 1, and a locking assembly is provided at the connection between the two. The locking structure is used to enable the handle 2 to maintain a stable retracted or unfolded state, thereby improving the stability of the handle 2 in the retracted or unfolded state, so that the handle 2 does not need to be disassembled and can achieve the effect of storage. At the same time, the high stability after unfolding can make the scanning head 3 more stable during handheld scanning, thereby improving the scanning effect.

[0030] The locking assembly includes a fixed shaft 4 installed on the outer shell 1, and a telescopic sleeve 6 is slidably sleeved on the fixed shaft 4. The telescopic sleeve 6 is connected to the fixed shaft 4 by a limiting structure, and a pushing portion 7 is provided at one end of the telescopic sleeve 6 away from the fixed shaft 4. A cylindrical spring 5 is sleeved on the fixed shaft 4, one end of the cylindrical spring 5 is connected to the end of the fixed shaft 4, and the other end is connected to the telescopic sleeve 6. The limiting structure includes a limiting groove 401 arranged along the length direction of the fixed shaft 4 and a limiting block 601 arranged on the inner wall of the telescopic sleeve 6. The limiting groove 401 is slidably connected to the limiting block 601. Under the cooperation of the limiting groove 401 and the limiting block 601, the telescopic sleeve 6 can be axially locked relative to the fixed shaft 4, that is, the telescopic sleeve 6 can only move in the length direction relative to the fixed shaft 4, and cannot rotate relative to the fixed shaft 4.

[0031] The rotating shaft of the handle 2 is a hollow structure, and the telescopic sleeve 6 can pass through the rotating shaft of the handle 2. A convex shaft 201 is also provided on the inner wall of the rotating shaft of the handle 2. The convex shaft 201 slides with the limiting groove provided on the outside of the telescopic sleeve 6. The limiting groove includes two groups of straight grooves 602 provided along the axial direction of the telescopic sleeve 6. The two groups of straight grooves 602 are connected by a spiral groove 603 provided in a spiral shape along the axial direction of the telescopic sleeve 6.

[0032] In the initial state, the convex shaft 201 is at one end of one of the straight grooves 602 away from the spiral groove 603. At this time, since the telescopic sleeve 6 cannot rotate relative to the fixed shaft 4, the handle 2 cannot rotate relative to the outer shell 1, so as to improve the stability of the handle 2 in the retracted or unfolded state. Specifically, when the handle 2 is rotated to retract the handle 2, the pressing and pushing part 7 can drive the telescopic sleeve 6 to move. At this time, the cylindrical spring 5 is compressed, and the limiting groove can move relative to the convex shaft 201. When the convex shaft 201 is separated from one group of straight grooves 602, the handle 2 is controlled to deflect, so that the convex shaft 201 can move along the spiral groove 603. At this time, the cylindrical spring 5 can be further compressed until the convex shaft 201 moves to the end of the spiral groove 603, the cylindrical spring 5 releases its elastic potential energy, and the convex shaft 201 enters the other straight groove 602. At this time, the handle 2 is in the retracted state, thereby reducing the space volume occupied by the entire scanning device when stored, making it more convenient to store.

[0033] During the unfolding process, the pushing portion 7 is pressed in the same way to switch the cam 201 to another straight groove 602. However, during this process, when the cam 201 moves into the spiral groove 603, the cylindrical spring 5 can actively drive the handle 2 to rotate by releasing elastic potential energy, so that the cam 201 automatically switches to another straight groove 602. That is, when the handle 2 is unfolded, it has a tendency to be driven and actively deflected, thereby increasing the unfolding speed and reducing the operating workload.

[0034] Through the above-mentioned arrangement, when in use, the convex shaft 201 cooperates with the two sets of straight grooves 602 to enable the handle 2 to have a stable folded and unfolded state. Based on this, on the one hand, the storage space of the entire device can be reduced, and there is no need to disassemble the handle 2 separately, thereby reducing the difficulty of operation during the folding and unfolding process. On the other hand, the position state of the scanning head 3 can be made more stable during use, thereby improving the accuracy of the detection results.

[0035] See also Figure 5 The driving component is arranged in the outer shell 1 and connected to the scanning head 3. The driving component can drive the scanning head 3 to reciprocate relative to the outer shell 1. The driving component includes a driving motor 8 installed in the outer shell 1. A turntable 9 is connected to the output shaft of the driving motor 8. A groove wheel 10 is rotatably installed at the eccentric position of the turntable 9.

[0036] The driving assembly further includes a deflection rod 11 connected to the rotation axis of the scanning head 3 . The deflection rod 11 is provided with a hysteresis groove 12 along its length, and the groove wheel 10 can roll in the hysteresis groove 12 .

[0037] During the scanning process, the technician holds the handle 2 and then starts the drive motor 8. At this time, the output shaft of the drive motor 8 can drive the turntable 9 to rotate and drive the groove wheel 10 to perform circular motion. The groove wheel 10 cooperates with the pre-capacity lag groove 12 to drive the deflection rod 11 to deflect back and forth, thereby driving the scanning head 3 to perform reciprocating deflection action without manual deflection, thereby reducing the difficulty of operation during the scanning process.

[0038] It is worth noting that compared with manual hand-held deflection, the resulting deflection angle is unstable, which will cause the scanning range to be incomplete. Mechanical reciprocating deflection can reduce the instability to a certain extent.

[0039] See also Figure 3 、 Figures 5 to 8 The positioning member 16 is connected to the rotating shaft of the scanning head 3, and a first gear 14 is coaxially connected to the rotating shaft of the scanning head 3. The first gear 14 is engaged with a second gear 15 rotatably mounted on the outer shell 1, and the second gear 15 is connected to the positioning member 16.

[0040] The positioning member 16 is provided with a guide groove 1601 and a positioning groove 1602 on a side facing away from the outer shell 1 , and the positioning groove 1602 is formed with two symmetrical inclined guide surfaces; The pushing assembly is connected to the handle 2. When the handle 2 rotates relative to the outer shell 1, the pushing assembly can cooperate with the positioning member 16 to return the scanning head 3 to the middle of its deflection stroke. The pushing assembly includes a sliding member 18 arranged on the outer shell 1, and the sliding member 18 is provided with a sliding connection part 1801 and a positioning shaft 19 on the side facing the outer shell 1. The sliding connection part 1801 is slidingly connected to the guide member 20 installed on the outer shell 1, and the positioning shaft 19 can move in the positioning groove 1602 and the guide groove 1601.

[0041] A hinge rod 17 is rotatably mounted on the sliding member 18 , and one end of the hinge rod 17 away from the sliding member 18 is rotatably connected to the handle 2 .

[0042] During the reciprocating deflection of the scanning head 3, the rotating shaft of the scanning head 3 will also drive the positioning member 16 to deflect through the first gear 14 and the second gear 15. At this time, the positioning shaft 19 can move in the positioning groove 1602 without interference. When the scanning head 3 stops moving, its stopping position is uncertain. It is true that a high-speed stepping motor can be used to drive it, but it will lead to increased costs. In this embodiment, when the handle 2 is deflected to retract the handle 2, the handle 2 can drive the sliding member 18 along the length direction of the guide member 20 through the hinge rod 17. At this time, the positioning shaft 19 will also follow the movement, and when the positioning shaft 19 abuts against the inclined guide surface, it can guide the positioning member 16 to deflect, and when the positioning shaft 19 enters the guide groove 1601, the scanning head 3 is rotated to the middle of its deflection stroke, thereby preventing the protective cover 23 from interfering with the scanning head 3 when the protective cover 23 is subsequently deflected, thereby protecting the structure of the scanning head 3 to a certain extent.

[0043] Through the above arrangement, when the handle 2 is deflected to retract the handle 2, the positioning shaft 19 can cooperate with the positioning groove 1602 and the guide groove 1601, so that the scanning head 3 rotates to the middle of its deflection stroke, thereby preventing the protective cover 23 from interfering with the scanning head 3 when the protective cover 23 is subsequently deflected, thereby protecting the structure of the scanning head 3 to a certain extent.

[0044] See also Figures 1 to 3 、 Figures 7 to 9 , the protective cover 23 is rotatably mounted on the outer shell 1; The abutment structure connects the protective cover 23 and the pushing assembly, and the abutment structure can drive the protective cover 23 to deflect upward after the scanning head 3 returns to the middle of its deflection stroke; The outer shell 1 is provided with a connecting piece 24, and the connecting piece 24 is rotatably connected to the rotating shaft of the protective cover 23; The abutment structure includes a connecting plate 25 connected to the rotating shaft of the protective cover 23 and a bracket 21 connected to the sliding member 18. An abutment wheel 22 is rotatably mounted on one end of the bracket 21 away from the sliding member 18. The abutment wheel 22 is adapted to the connecting plate 25. A stopper set is further provided between the connecting member 24 and the rotating shaft of the protective cover 23 . The stopper set includes a limiting protrusion 2301 provided on the rotating shaft of the protective cover 23 . The limiting protrusion 2301 is adapted to a stopper 2401 provided on the connecting member 24 .

[0045] When the scanning head 3 rotates to the middle of its deflection stroke, the handle 2 will continue to perform the retraction action. At this time, the sliding member 18 will continue to move and drive the abutment wheel 22 to move. When the abutment wheel 22 abuts against the connecting plate 25, it can actively drive the connecting plate 25 and the protective cover 23 to deflect until the protective cover 23 deflects to a vertical position, thereby achieving the effect of protecting the scanning head 3, and when the entire scanning device is placed in the protective box, it has a double protection effect on the scanning head 3, further reducing the risk of damage to the scanning head 3.

[0046] When the protective cover 23 is deflected to the vertical position, it is parallel to the scanning head 3. At this time, the limiting protrusion 2301 can abut against the stop portion 2401, so that the protective cover 23 can remain stable in this state, preventing the protective cover 23 from moving excessively toward the scanning head 3, causing damage to the scanning head 3.

[0047] When the handle 2 is in the unfolded state, the limiting protrusion 2301 on the rotating shaft of the protective cover 23 can abut against the other end of the stopper 2401 , so that the protective cover 23 remains in a horizontal state to prevent the scanning operation of the scanning head 3 from being affected.

[0048] Through the above-mentioned arrangement, the deflection of the protective cover 23 can be achieved, so that after the scanning head 23 moves to the middle of its stroke, the protective cover 23 can be deflected to protect the scanning head 3, thereby reducing the risk of damage to the scanning head 3, and when the handle 2 is in the unfolded state, the protective cover 23 can remain in a horizontal state to prevent affecting the scanning operation of the scanning head 3.

[0049] As an embodiment of the present invention, a method for using the automatic deflection handheld three-dimensional laser scanning device for a laneway is also proposed, comprising the following steps: Step 1: The handle 2 is unfolded by the locking assembly, and the protective cover 23 is also opened; Step 2: Start the drive assembly, which can drive the scanning head 3 to swing back and forth to perform a scanning operation; Step 3: After the scan is completed, the condensation assembly and the rotating shaft of the handle 2 are unlocked, and the handle 2 is rotated relative to the outer shell 1; Step 4: During the rotation of the handle 2, the pushing assembly can return the scanning head 3 to the middle of its deflection stroke. At the same time, the handle 2 continues to rotate. At this time, the protective cover 23 can deflect upward to protect the scanning head 3; Step 5: Place the folded scanning device into the protective box.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A handheld 3D laser scanning device for lanes with automatic deflection, comprising: An outer shell (1), wherein a scanning head (3) and a handle (2) are provided on the outer shell (1); It is characterized by further comprising: a drive assembly, disposed within the outer shell (1) and connected to the scanning head (3), the drive assembly being capable of driving the scanning head (3) to reciprocate relative to the outer shell (1); A positioning member (16) connected to the rotating shaft of the scanning head (3); a pushing assembly connected to the handle (2), wherein when the handle (2) rotates relative to the outer shell (1), the pushing assembly can cooperate with the positioning member (16) to return the scanning head (3) to the middle of its deflection stroke; A protective cover (23) is rotatably mounted on the outer shell (1); An abutment structure connects the protective cover (23) and the pushing assembly, and the abutment structure can drive the protective cover (23) to deflect upward after the scanning head (3) is rectified to the middle of its deflection stroke.

2. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 1, characterized in that: The handle (2) is rotatably connected to the outer shell (1), and a locking assembly is provided at the connection between the two; The locking assembly comprises a fixed shaft (4) mounted on the outer shell (1), a telescopic sleeve (6) is slidably sleeved on the fixed shaft (4), the telescopic sleeve (6) and the fixed shaft (4) are connected via a limiting structure, and a cylindrical spring (5) is sleeved on the fixed shaft (4), one end of the cylindrical spring (5) is connected to the end of the fixed shaft (4), and the other end is connected to the telescopic sleeve (6); The rotating shaft of the handle (2) is a hollow structure, and the telescopic sleeve (6) can penetrate the rotating shaft of the handle (2). A convex shaft (201) is further provided on the inner wall of the rotating shaft of the handle (2), and the convex shaft (201) is slidably engaged with a limiting groove provided on the outside of the telescopic sleeve (6).

3. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 2, characterized in that: The limiting structure comprises a limiting groove (401) arranged along the length direction of the fixed shaft (4) and a limiting block (601) arranged on the inner wall of the telescopic sleeve (6), and the limiting groove (401) is slidably connected to the limiting block (601).

4. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 2, characterized in that: The limiting groove comprises two groups of straight grooves (602) arranged along the axial direction of the telescopic sleeve (6), and the two groups of straight grooves (602) are connected by a spiral groove (603) arranged in a spiral shape along the axial direction of the telescopic sleeve (6).

5. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 1, characterized in that: The drive assembly comprises a drive motor (8) installed in the outer shell (1), a turntable (9) is connected to the output shaft of the drive motor (8), and a groove wheel (10) is rotatably installed at an eccentric position of the turntable (9); The driving assembly further comprises a deflection rod (11) connected to the rotating shaft of the scanning head (3), wherein the deflection rod (11) is provided with a retardation groove (12) along its length, and the groove wheel (10) is capable of rolling in the retardation groove (12).

6. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 1, characterized in that: A first gear (14) is coaxially connected to the rotating shaft of the scanning head (3), the first gear (14) is engaged with a second gear (15) rotatably mounted on the outer shell (1), and the second gear (15) is connected to the positioning member (16); A guide groove (1601) and a positioning groove (1602) are provided on a side of the positioning member (16) facing away from the outer shell (1), and two symmetrical inclined guide surfaces are formed on the positioning groove (1602).

7. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 6, characterized in that: The pushing assembly includes a sliding member (18) arranged on the outer shell (1), and a sliding connection portion (1801) and a positioning shaft (19) are provided on a side of the sliding member (18) facing the outer shell (1), the sliding connection portion (1801) is slidably connected to a guide member (20) installed on the outer shell (1), and the positioning shaft (19) can move in the positioning groove (1602) and the guide groove (1601); A hinged rod (17) is also rotatably mounted on the sliding member (18), and one end of the hinged rod (17) away from the sliding member (18) is rotatably connected to the handle (2).

8. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 7, characterized in that: A connecting piece (24) is provided on the outer shell (1), and the connecting piece (24) is rotatably connected to the rotating shaft of the protective cover (23); The abutment structure comprises a connecting plate (25) connected to the rotating shaft of the protective cover (23) and a bracket (21) connected to the sliding member (18); an abutment wheel (22) is rotatably mounted on one end of the bracket (21) away from the sliding member (18); the abutment wheel (22) is adapted to the connecting plate (25); A stopper kit is also provided between the connecting member (24) and the rotating shaft of the protective cover (23).

9. The automatic deflection handheld three-dimensional laser scanning device for lanes according to claim 8, characterized in that: The stop kit comprises a limiting protrusion (2301) provided on the rotating shaft of the protective cover (23), and the limiting protrusion (2301) is adapted to a stopping portion (2401) provided on the connecting member (24).

10. A method for using the automatic deflection handheld three-dimensional laser scanning device for lanes according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The handle (2) is unfolded by the locking assembly, and the protective cover (23) is also opened; Step 2: Start the drive assembly, which can drive the scanning head (3) to swing back and forth to perform a scanning operation; Step 3: After the scan is completed, the condensation component and the rotating shaft of the handle (2) are unlocked, and the handle (2) is rotated relative to the outer shell (1); Step 4: During the rotation of the handle (2), the pushing assembly can return the scanning head (3) to the middle of its deflection stroke, while continuing to rotate the handle (2). At this time, the protective cover (23) can be deflected upward to protect the scanning head (3); Step 5: Place the folded scanning device into the protective box.

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