Drive structure of an all-round building laser scanner

Abstract

The present invention relates to the technical field of transmission structures, and particularly to a transmission structure of an all-round building laser scanner, which is used to solve the problem that the transmission mechanism of the existing scanner cannot adaptively change the stability according to the height of the bracket; the transmission structure includes a support mechanism, the support mechanism includes a rotating cylinder, the scanner body is connected to the top of the rotating cylinder, and a speed change mechanism is connected to the rotating cylinder; the speed change mechanism includes a plurality of worm wheels rotatably connected to the rotating cylinder, and a worm is meshed with each of the plurality of worm wheels. The worm wheels are vertically arranged on the rotating cylinder, and the pitch of the plurality of worm wheels and the corresponding worms decreases sequentially from top to bottom; the support mechanism can drive the scanner body to vertically lift and lower. When the scanner body rises, the low-pitch worm drives the corresponding worm wheel to rotate, and the remaining worm wheels rotate relative to the rotating cylinder; through the speed change mechanism and the optimized design of the pitch of the worm and worm wheel, the transmission structure can adaptively change the transmission force and reduce the transmission vibration when the height of the all-round building laser scanner changes.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission structures, and particularly to a transmission structure of an omnidirectional building laser scanner. Background Art

[0002] In the field of building measurement and scanning, an omnidirectional building laser scanner has become an indispensable tool, which can efficiently and accurately capture the three-dimensional information of a building and provide key data support for design, construction and later maintenance.

[0003] When the laser scanner scans a large range or needs to scan a target at a relatively long distance, it is generally necessary to increase the height of the support to expand the field of view.

[0004] Conversely, if the scanning range is small or the target is close, the height of the support can be appropriately reduced. When scanning the target object, the existing device uses a transmission mechanism to drive the scanner body to rotate to collect images. However, the existing transmission mechanism cannot adaptively adjust the transmission stability according to the height of the support. As a result, when the height of the support is relatively high, the mechanical vibration generated by the rotation of the scanner body will be transmitted to the support, and the vibration will be amplified after the support is raised, thereby reducing the scanning accuracy and stability. Summary of the Invention

[0005] The present invention provides a transmission structure of an omnidirectional building laser scanner to solve the problem that the transmission mechanism of the existing scanner cannot adaptively change the stability according to the height of the support.

[0006] To alleviate the above technical problems, the technical solution provided by the present invention is as follows:

[0007] A transmission structure of an omnidirectional building laser scanner includes a support mechanism. The support mechanism includes a rotating cylinder, and the scanner body is connected to the top of the rotating cylinder. A speed change mechanism is connected to the rotating cylinder.

[0008] The speed change mechanism includes a plurality of worm wheels rotatably connected to the rotating cylinder. A worm is engaged with each of the plurality of worm wheels. The worm wheels are vertically arranged on the rotating cylinder, and the pitch of the teeth of the plurality of worm wheels and the corresponding worms decreases sequentially from top to bottom.

[0009] The support mechanism can drive the scanner body to move vertically up and down. When the scanner body rises, the worm with a low pitch drives the corresponding worm wheel to rotate, and the remaining worm wheels rotate relative to the rotating cylinder.

[0010] Furthermore, the support mechanism further includes a support, a limiting plate is connected to the lower part of the support, the scanner body is located on the upper part of the support, a plurality of electric telescopic rods are annularly and pivotally connected to the lower surface of the support, and through grooves adapted to the plurality of electric telescopic rods are formed in the limiting plate.

[0011] Furthermore, the support mechanism further includes a cylinder, the cylinder body of the cylinder is pivotally connected to the lower surface of the limiting plate, the output end of the cylinder is pivotally connected to the electric telescopic rod, and when the cylinder extends, the electric telescopic rod extends synchronously.

[0012] Furthermore, a switching mechanism is further included, the switching mechanism includes a sliding rod sliding in the rotating cylinder, an expanding block is slidably connected to the side wall of the rotating cylinder, a plurality of convex rings corresponding to the plurality of expanding blocks are rotatably connected to the sliding rod, and when the sliding rod continuously moves downward, the plurality of convex rings sequentially push the corresponding plurality of expanding blocks, so that the plurality of expanding blocks from top to bottom sequentially abut against the plurality of worm wheels.

[0013] Furthermore, the switching mechanism further includes a connecting rod, one end of the connecting rod is pivotally connected to the bottom end of the sliding rod, the other end of the connecting rod is pivotally connected to the electric telescopic rod, and the pivotally connected end of the connecting rod to the sliding rod is higher than the pivotally connected end of the connecting rod to the electric telescopic rod.

[0014] Furthermore, the number of the connecting rods is multiple, and the multiple connecting rods are annularly arrayed on the sliding rod.

[0015] Furthermore, a driving mechanism is further included, the driving mechanism includes a plurality of driven gears connected to the ends of the plurality of worms and a motor, a driving gear meshing with the plurality of driven gears alternately is connected to the output end of the motor, and when the corresponding driven gear meshes with the driving gear, the corresponding worm drives the scanner body to rotate through the corresponding worm wheel.

[0016] Furthermore, the driving mechanism includes a base, the motor is connected to the base, and the base slides vertically on the limiting plate.

[0017] Furthermore, the driving mechanism further includes a first hydraulic rod and a second hydraulic rod connected to the limiting plate, the cylinder bodies of the first hydraulic rod and the second hydraulic rod are communicated through a pipeline, the output end of the second hydraulic rod is connected to the base, and the diameter of the first hydraulic rod is larger than that of the second hydraulic rod.

[0018] Furthermore, the driving mechanism further includes a cylindrical gear and a rack meshing with the cylindrical gear, the cylindrical gear is connected to the hinge shaft of one of the electric telescopic rods, and the rack is connected to the output end of the first hydraulic rod.

[0019] The beneficial effects of the present invention are analyzed as follows:

[0020] A transmission structure of an all-round building laser scanner includes a support mechanism. The support mechanism includes a rotating cylinder, and the scanner body is connected to the top of the rotating cylinder. A speed-changing mechanism is connected to the rotating cylinder. The speed-changing mechanism includes a plurality of worm wheels rotatably connected to the rotating cylinder. A worm is engaged with each of the plurality of worm wheels. The worm wheels are vertically arranged on the rotating cylinder, and the pitch of the teeth of the plurality of worm wheels and the corresponding worms decreases sequentially from top to bottom. The support mechanism can drive the scanner body to vertically rise and fall. When the scanner body rises, the worm with a low tooth pitch drives the corresponding worm wheel to rotate, and the other worm wheels rotate relative to the rotating cylinder.

[0021] The scanner body is installed on the upper part of the support mechanism. The support mechanism can be lifted and lowered to adjust the height of the scanner body, so that the scanner body can scan targets in a large range or at a relatively long distance. The scanner body adjusts its scanning angle through the rotation drive of the rotating cylinder. A plurality of worm wheels are arranged on the rotating cylinder from top to bottom, and the density of the teeth of the worm wheels and the worms cooperating with them increases sequentially from top to bottom. When the height of the support mechanism is in the lowest state, the uppermost worm rotates and drives the worm wheel engaged with it to rotate, and the other worm wheels rotate relative to the rotating cylinder to prevent the rotating cylinder from being stuck. After the support mechanism is raised, the worm with a high tooth density drives the worm wheel engaged with it to rotate. When the tooth density of the worm wheel and the worm increases, the transmission from the worm wheel to the worm reduces the vibration of the whole device. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the support mechanism of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure at the connecting rod of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the switching mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the speed-changing mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the driving mechanism of the present invention.

[0029] Icon:

[0030] 100, support mechanism; 110, support; 120, limit plate; 130, scanner body; 140, rotating cylinder; 150, electric telescopic rod; 160, cylinder; 200, speed change mechanism; 210, worm; 220, worm gear; 300, drive mechanism; 310, motor; 320, base; 330, driving gear; 331, driven gear; 340, second hydraulic rod; 350, first hydraulic rod; 360, rack; 370, cylindrical gear; 400, switching mechanism; 410, slide bar; 420, expansion block; 430, convex ring; 440, connecting rod. Detailed implementation manners

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0032] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, and it can be the communication inside two elements.

[0036] 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 situations.

[0037] Embodiment, such as Figures 1-6As shown in the figure, a transmission structure of an all-round building laser scanner includes a support mechanism 100. The support mechanism 100 includes a rotating cylinder 140. The scanner body 130 is connected to the top of the rotating cylinder 140, and a speed change mechanism 200 is connected to the rotating cylinder 140. The speed change mechanism 200 includes a plurality of worm wheels 220 rotatably connected to the rotating cylinder 140. A worm 210 is engaged with each of the plurality of worm wheels 220. The worm wheels 220 are vertically arranged on the rotating cylinder 140, and the pitch of the teeth of the plurality of worm wheels 220 and the corresponding worms 210 decreases sequentially from top to bottom. The support mechanism 100 can drive the scanner body 130 to vertically lift. When the scanner body 130 rises, the worm 210 with a low pitch drives the corresponding worm wheel 220 to rotate, and the remaining worm wheels 220 rotate relative to the rotating cylinder 140.

[0038] The working mechanism of the transmission structure of the building laser scanner provided in this embodiment:

[0039] The scanner body 130 is installed on the upper part of the support mechanism 100. The support mechanism 100 can be lifted to adjust the height of the scanner body 130, so that the scanner body 130 can scan targets in a large range or at a relatively long distance. The scanner body 130 adjusts its scanning angle through the rotation drive of the rotating cylinder 140. A plurality of worm wheels 220 are arranged on the rotating cylinder 140 from top to bottom, and the density of the teeth of the worm wheels 220 and the worms 210 cooperating with them increases sequentially from top to bottom. When the height of the support mechanism 100 is in the lowest state, the uppermost worm 210 rotates and drives the worm wheel 220 engaged with it to rotate, and the remaining worm wheels 220 rotate relative to the rotating cylinder 140 to prevent the rotating cylinder 140 from being stuck. After the support mechanism 100 rises, the worm 210 with a high tooth density drives the worm wheel 220 engaged with it to rotate. When the tooth density of the worm wheel 220 and the worm 210 increases, the transmission of the worm wheel 220 to the worm 210 reduces the vibration of the whole device;

[0040] The rise of the support mechanism 100 has gears, each gear corresponding to a height of the support mechanism 100, and each height of the support mechanism 100 corresponding to a set of worms 210 and worm wheels 220, ensuring that the speed change mechanism 200 can adaptively change the transmission speed according to the height of the support mechanism 100, thereby reducing the vibration generated when the scanner body 130 rotates and ensuring that the structure diagram of the scanned object is not affected by the vibration of the scanner body 130.

[0041] Regarding the structure of the support mechanism 100, specifically:

[0042] The support mechanism 100 also includes a support 110, the lower part of the support 110 is connected to a limiting plate 120, the scanner body 130 is located on the upper part of the support 110, and a plurality of electric telescopic rods 150 are hingedly connected in a circular array on the lower surface of the support 110, and a through groove cooperating with the plurality of electric telescopic rods 150 is opened on the limiting plate 120.

[0043] The support 110 supports the scanner body 130, and the electric telescopic rod 150 is hinged on the lower surface of the support 110. The height of the support 110 can be adjusted by adjusting the synchronous extension and retraction of multiple electric telescopic rods 150. The electric telescopic rod 150 can swing relative to the support 110. A through groove is provided on the limit plate 120. This through groove limits the swing angle of the electric telescopic rod 150 to ensure that the electric telescopic rod 150 is not easy to swing.

[0044] Among the optional methods of this embodiment, the more preferred ones are:

[0045] The supporting mechanism 100 further includes a cylinder 160 , a cylinder body of the cylinder 160 is hinged to the lower surface of the limiting plate 120 , an output end of the cylinder 160 is hinged to the electric telescopic rod 150 , and when the cylinder 160 is extended, the electric telescopic rod 150 is extended synchronously.

[0046] When the cylinder 160 is extended or retracted, the angle of the electric telescopic rod 150 can be adjusted. When the cylinder 160 is extended, the electric telescopic rod 150 is extended synchronously. At this time, the height of the support mechanism 100 is increased. At the same time, the distance between the contact points of the multiple electric telescopic rods 150 and the ground is relatively far, thereby improving the stability of the support mechanism 100. Conversely, when the cylinder 160 is shortened, the electric telescopic rod 150 is shortened synchronously. At this time, the height of the support mechanism 100 is reduced. The distance between the contact points of the multiple electric telescopic rods 150 and the ground is relatively close. At this time, the height of the support mechanism 100 is reduced, so that the footprint of the support mechanism 100 is reduced.

[0047] Regarding the structure of the switching mechanism 400, specifically:

[0048] The switching mechanism 400 includes a slide rod 410 sliding in the rotating drum 140, and an expansion block 420 is slidably connected to the side wall of the rotating drum 140. A plurality of convex rings 430 corresponding to the plurality of expansion blocks 420 are rotatably connected to the slide rod 410. The slide rod 410 continuously moves downward so that the plurality of convex rings 430 push the corresponding plurality of expansion blocks 420 in turn, so that the plurality of expansion blocks 420 from top to bottom abut against the plurality of worm gears 220 in turn.

[0049] When the sliding rod 410 is at the uppermost position of its stroke, the support mechanism 100 is in the lowest state. At this time, the convex ring 430 at the uppermost part of the sliding rod 410 abuts against the inner wall of the uppermost expansion block 420, and the remaining convex rings 430 do not contact the expansion block 420. After being pushed, this expansion block 420 expands outward and abuts against the inner wall of the uppermost worm gear 220. At this time, when the worm gear 220 rotates, it can drive the rotating cylinder 140 to rotate synchronously. As the support mechanism 100 rises, the sliding rod 410 slides down synchronously. At this time, the convex ring 430 at the second top of the sliding rod 410 abuts against the second top expansion block 420, so that when the second top worm gear 220 rotates, it can drive the rotating cylinder 140 to rotate. And so on. As the height of the support mechanism 100 increases, the worm gears 210 from top to bottom are started one by one, so that when the height of the support mechanism 100 increases, the vibration during the operation of the scanner body 130 can be reduced.

[0050] In an alternative embodiment of the present embodiment, preferably:

[0051] The switching mechanism 400 further includes a connecting rod 440. One end of the connecting rod 440 is hinged to the bottom end of the sliding rod 410, and the other end of the connecting rod 440 is hinged to the electric telescopic rod 150. The hinged end of the connecting rod 440 and the sliding rod 410 is higher than the hinged end of the connecting rod 440 and the electric telescopic rod 150.

[0052] When the air cylinder 160 extends, the electric telescopic rod 150 extends synchronously. At this time, the height of the support mechanism 100 increases, and at the same time, the electric telescopic rod 150 swings outward. At this time, the swings of multiple electric telescopic rods 150 can pull the sliding rod 410 through the connecting rod 440, so that the sliding rod 410 moves downward, thereby ensuring that the transmission speed of the speed change mechanism 200 can be changed. The swing angle of the electric telescopic rod 150 has a gear position matching the sliding distance of the sliding rod 410. Each time the sliding rod 410 slides and locks the corresponding worm gear 220 on the rotating cylinder 140, it is a gear position.

[0053] In an alternative embodiment of the present embodiment, preferably:

[0054] The number of the connecting rods 440 is multiple, and the multiple connecting rods 440 are arranged in a circular array around the sliding rod 410.

[0055] By arranging multiple connecting rods 440, the sliding rod 410 slides up and down with uniform force. Moreover, the swing of each electric telescopic rod 150 is driven by a separate air cylinder 160, and the multiple connecting rods 440 are respectively driven by the corresponding electric telescopic rods 150, ensuring that the sliding rod 410 can receive sufficient driving force.

[0056] Regarding the structure of the driving mechanism 300, specifically:

[0057] The driving mechanism 300 includes a plurality of driven gears 331 connected to the ends of a plurality of worm gears 210 and a motor 310. The output end of the motor 310 is connected with a driving gear 330 that meshes with the plurality of driven gears 331 alternately. When the corresponding driven gear 331 meshes with the driving gear 330, the corresponding worm gear 210 drives the scanner body 130 to rotate through the corresponding worm wheel 220.

[0058] When the motor 310 starts, it drives the driving gear 330 to rotate. When the supporting mechanism 100 is in the lowest state, the driving gear 330 meshes with the uppermost driven gear 331, so that the uppermost worm gear 210 is driven to rotate. As the supporting mechanism 100 rises, the height of the motor 310 gradually decreases, so that the driving gear 330 can sequentially mesh with the driven gears 331 in the vertical direction.

[0059] In an alternative embodiment of the present example, preferably:

[0060] The driving mechanism 300 includes a base 320. The motor 310 is connected to the base 320, and the base 320 slides vertically on the limiting plate 120.

[0061] The setting of the base 320 enables the motor 310 to be installed and fixed. The base 320 slides vertically on the limiting plate 120, so that the motor 310 is driven to move up and down.

[0062] In an alternative embodiment of the present example, preferably:

[0063] The driving mechanism 300 further includes a first hydraulic rod 350 and a second hydraulic rod 340 connected to the limiting plate 120. The cylinder bodies of the first hydraulic rod 350 and the second hydraulic rod 340 are connected through a pipeline. The output end of the second hydraulic rod 340 is connected to the base 320, and the diameter of the first hydraulic rod 350 is larger than that of the second hydraulic rod 340.

[0064] The telescoping of the second hydraulic rod 340 can drive the base 320 to move up and down. The first hydraulic rod 350 is connected to the second hydraulic rod 340, and the diameter of the first hydraulic rod 350 is larger than that of the second hydraulic rod 340. Thus, after the first hydraulic rod 350 shortens, it can pump hydraulic oil into the second hydraulic rod 340, so that the extended length of the second hydraulic rod 340 is greater than the shortened length of the first hydraulic rod 350.

[0065] In an alternative embodiment of the present example, preferably:

[0066] The driving mechanism 300 further includes a cylindrical gear 370 and a rack 360 that meshes with the cylindrical gear 370. The cylindrical gear 370 is connected to the hinge shaft of one of the electric telescopic rods 150, and the rack 360 is connected to the output end of the first hydraulic rod 350.

[0067] When the electric telescopic rod 150 swings outwards, the support mechanism 100 is in an extended state. At this time, the cylindrical gear 370 rotates to drive the rack 360 to move upwards, so that the first hydraulic rod 350 extends, causing the hydraulic oil in the second hydraulic rod 340 to flow into the first hydraulic rod 350. At this time, the second hydraulic rod 340 shortens, thereby driving the base 320 to descend, enabling the motor 310 to drive the lower worm 210 to rotate.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A transmission structure of an omnidirectional building laser scanner, characterized in that: The scanner comprises a support mechanism (100), wherein the support mechanism (100) comprises a rotating drum (140), a scanner body (130) is connected to the top of the rotating drum (140), and a speed change mechanism (200) is connected to the rotating drum (140); The speed change mechanism (200) comprises a plurality of worm wheels (220) rotatably connected to the rotating drum (140), the plurality of worm wheels (220) being meshed with a worm (210), the worm wheels (220) being arranged vertically on the rotating drum (140), and the pitches of the plurality of worm wheels (220) and the corresponding worms (210) decreasing from top to bottom; The support mechanism (100) is capable of driving the scanner body (130) to vertically rise and fall, and when the scanner body (130) rises, the worm (210) with a low pitch drives the corresponding worm wheel (220) to rotate, and the remaining worm wheels (220) rotate relative to the rotating drum (140); The support mechanism (100) further comprises a support (110), the lower portion of the support (110) being connected to a limiting plate (120), the scanner body (130) being located at the upper portion of the support (110), a plurality of electric telescopic rods (150) being hingedly connected in an annular array on the lower surface of the support (110), and the limiting plate (120) being provided with through grooves cooperating with the plurality of electric telescopic rods (150); The support mechanism (100) further comprises a cylinder (160), a cylinder body of the cylinder (160) being hinged to the lower surface of the limit plate (120), an output end of the cylinder (160) being hinged to the electric telescopic rod (150), and when the cylinder (160) is extended, the electric telescopic rod (150) is extended synchronously; The invention also comprises a switching mechanism (400), wherein the switching mechanism (400) comprises a sliding rod (410) sliding in the rotating cylinder (140), an expansion block (420) being slidably connected to the side wall of the rotating cylinder (140), a plurality of convex rings (430) corresponding to the plurality of expansion blocks (420) being rotatably connected to the sliding rod (410), and the sliding rod (410) continuously moves downward so that the plurality of convex rings (430) sequentially push the corresponding plurality of expansion blocks (420), so that the plurality of expansion blocks (420) from top to bottom sequentially abut against the plurality of worm gears (220); The switching mechanism (400) further comprises a connecting rod (440), one end of the connecting rod (440) being hinged to the bottom end of the sliding rod (410), and the other end of the connecting rod (440) being hinged to the electric telescopic rod (150), and a hinged end between the connecting rod (440) and the sliding rod (410) being higher than a hinged end between the connecting rod (440) and the electric telescopic rod (150).

2. The transmission structure of the omnidirectional building laser scanner according to claim 1 is characterized in that: There are a plurality of connecting rods (440), and the plurality of connecting rods (440) are arranged in a ring array on the sliding rod (410).

3. The transmission structure of the omnidirectional building laser scanner according to claim 2 is characterized in that: The invention also comprises a driving mechanism (300), wherein the driving mechanism (300) comprises a plurality of driven teeth (331) connected to the ends of the plurality of worms (210) and a motor (310), wherein the output end of the motor (310) is connected to driving teeth (330) that alternately mesh with the plurality of driven teeth (331), and when the corresponding driven teeth (331) mesh with the driving teeth (330), the corresponding worm (210) drives the scanner body (130) to rotate via the corresponding worm wheel (220).

4. The transmission structure of the omnidirectional building laser scanner according to claim 3 is characterized in that: The driving mechanism (300) comprises a base (320), the motor (310) is connected to the base (320), and the base (320) slides vertically on the limiting plate (120).

5. The transmission structure of the omnidirectional building laser scanner according to claim 4 is characterized in that: The driving mechanism (300) further comprises a first hydraulic rod (350) and a second hydraulic rod (340) connected to the limit plate (120); the cylinder bodies of the first hydraulic rod (350) and the second hydraulic rod (340) are connected via a pipeline; the output end of the second hydraulic rod (340) is connected to the base (320); and the diameter of the first hydraulic rod (350) is greater than that of the second hydraulic rod (340).

6. The transmission structure of the omnidirectional building laser scanner according to claim 5 is characterized in that: The driving mechanism (300) further comprises a cylindrical gear (370) and a rack (360) meshing with the cylindrical gear (370); the cylindrical gear (370) is connected to a hinge shaft of one of the electric telescopic rods (150); and the rack (360) is connected to an output end of the first hydraulic rod (350).

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