Protective cover device of tunnel monitoring automatic total station

Abstract

The utility model discloses an automatic total station protective cover device for tunnel monitoring, which is characterized in that a protective cover made of waterproof cloth is used as a component of a protective cover assembly, and the lifting assembly drives the lower end of the protective cover of the protective cover assembly to be folded upwards or unfolded downwards by utilizing the matching of the lifting assembly, the protective cover assembly and a bracket assembly; according to the device, the structure is compact, and when the shield of the shield assembly is folded or unfolded downwards, a measurer can control the automatic total station to work through a background management system, and meanwhile, the automatic total station can be effectively protected. According to the scheme, the automatic total station can be exposed or shaded by controlling the lifting assembly through the controller, implementation is reliable, application is flexible, the scheme can be reused in multiple scenes of remote operation control of the automatic total station, shading of the automatic total station during non-working time is achieved, and remote deployment safety and reliability of the automatic total station are improved.

Description

Technical Field

[0001] The utility model relates to the fields of engineering monitoring equipment protection devices and total station auxiliary devices, in particular to a tunnel monitoring automatic total station protection cover device. Background Art

[0002] Total stations are commonly used surveying equipment during construction. During tunnel construction planning, they are required to perform multiple observations and records. With the increasing prevalence of intelligent equipment, some remotely controlled automatic total stations are now available on the market. These can be deployed on-site (e.g., tunnel construction sites) and issued work instructions using a remote backend to remotely control the total station for regular measurements and data recording. However, due to the presence of interference such as dust in tunnels, dust deposition can interfere with the operation of the automatic total station's components while the automatic total station is on standby. Manual on-site operation would require significant manpower. Currently, some technicians have proposed using a rigid shield to assist in lifting. When the automatic total station is operating, the rigid shield is driven by the lifting device to rise and open. When the automatic total station is on standby, the rigid shield descends to cover the total station. However, due to the limited height and clearance of tunnels, and the fact that the total station itself requires a support frame to maintain a certain working height, this solution presents significant difficulties in tunnel implementation, particularly due to the potential interference between the shield and the tunnel roof, which restricts its implementation.

[0003] As the scale and demand for tunnel monitoring grow, on-site data collection through intelligent total station equipment is the future trend. Providing a good on-site working environment for the total station is a research topic with positive and practical significance. How to provide a protective cover device to reduce the chance of damage to the precision components of the total station by dust and other particulate matter in the tunnel without interfering with the normal operation of the total station and without invading the safe operation limit of the tunnel, and to facilitate the deployment and remote control of automatic total stations in tunnels is a research topic with positive and practical significance. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a protective cover device for an automatic total station for tunnel monitoring, which has a simple structure, is reliable in implementation, and does not negatively interfere with the operation of the automatic total station.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by this utility model are:

[0006] A protective cover device for an automatic total station for tunnel monitoring, comprising:

[0007] A bracket assembly comprising a base, a support rod, and a connecting frame. The base is fixedly mounted on the side wall of the tunnel. The lower end of the support rod is fixedly connected to the base, and the other end thereof extends vertically upward. The connecting frame is fixedly connected to the upper end of the support rod. An automatic total station is placed below the connecting frame.

[0008] A shield assembly, comprising a shield made of waterproof cloth, the shield being a cylindrical structure with an open lower end, the upper end of which is fixedly connected to the connecting frame, the lower end of which hangs downward, and an accommodating cavity formed therein, the accommodating cavity being used to accommodate the automatic total station cover placed below the connecting frame;

[0009] A lifting assembly is provided on one side of the bracket assembly and has a lifting drive end connected to the lower end of the shield. The lifting assembly drives the lower end of the shield to be retracted upward or extended downward, so that the automatic total station below the connecting frame is exposed or covered by the shield in the accommodating cavity.

[0010] The controller is connected to the lifting assembly and controls the opening and closing of the lifting assembly.

[0011] As a possible embodiment, further, the connecting frame of the bracket assembly described in this scheme is a circular ring structure, the connecting frame and the base are arranged relative to each other up and down, and the support rod is a cylindrical rod, which is arranged vertically, and the upper end is fixedly connected to one side of the connecting frame, and the lower end is fixedly connected to the base.

[0012] As a preferred implementation option, preferably, one end of the base of the bracket assembly described in this scheme is provided with a mounting plate for fixing the base on the side wall of the tunnel, and the mounting plate is provided with multiple mounting holes, and the other end of the base is connected to the automatic total station.

[0013] As a preferred implementation option, preferably, the upper end face edge of the cylindrical structure of the shield in this solution is fixedly connected to the inner circumference of the circular ring structure of the connecting frame.

[0014] As a preferred implementation option, preferably, the lifting assembly of this solution includes:

[0015] A screw rod is vertically arranged on one side of the support rod, a connecting block is provided at the upper end of the support rod, a polished rod portion is provided at the upper end of the screw rod, the screw rod rotatably passes through the connecting block through the polished rod portion, and the lower end of the screw rod extends downward;

[0016] A motor is provided on the base, the motor is connected to the controller, and the controller controls the opening and closing of the motor;

[0017] A transmission mechanism is connected to the lower end of the screw and the driving end of the motor respectively, and the motor outputs a transmission force to drive the screw to rotate through the transmission mechanism;

[0018] The slider is a plate-like structure with a threaded hole and a guide groove respectively provided thereon. The slider is threadedly connected to the screw rod through the threaded hole, and the guide groove is fitted with the support rod;

[0019] The traction frame is an annular structure adapted to the diameter of the shield, one side of which is fixedly connected to the side of the slider away from the screw rod, and the lower end edge of the shield is fixedly connected to the inner circumference or outer circumference of the annular structure of the traction frame;

[0020] When the screw rod rotates, the slider drives the traction frame to move upward or downward, so that the automatic total station below the connecting frame is exposed or covered by the protective cover.

[0021] As a preferred implementation option, preferably, the connecting block of this scheme is provided with a first through hole, the first through hole is provided with a first bearing, the outer ring of the first bearing is fixedly connected to the inner wall of the first through hole, and the smooth rod part of the screw rod passes through the inner ring of the first bearing and is fixedly connected to the inner ring of the first bearing.

[0022] As a preferred implementation option, preferably, the transmission mechanism of this solution includes:

[0023] The mounting housing is a box-shaped housing structure with a mounting cavity formed therein. The mounting housing is arranged below the screw rod. The lower end of the screw rod is a polished rod structure and is rotatably inserted into the mounting housing. The driving end of the motor is inserted into the mounting housing. The mounting housing is provided with avoidance holes corresponding to the insertion positions of the screw rod and the motor.

[0024] A first bevel gear is provided at the lower end of the screw rod;

[0025] a second bevel gear, disposed on a driving end of the motor and meshingly connected with the first bevel gear;

[0026] The second bearing is arranged in the mounting shell, and its outer ring is fixedly connected to the inner wall of the mounting shell through a connecting piece. The lower end of the screw rod passes through the inner ring of the second bearing and is fixedly connected to the inner ring of the second bearing.

[0027] As a preferred implementation option, preferably, the motor described in this solution is a servo reduction motor.

[0028] As a preferred implementation option, preferably, the shield assembly of this solution further includes:

[0029] a spring having a diameter adapted to the shield, helically wound around the outer circumference or inner circumference of the shield, with the upper end of the spring fixedly connected to the upper portion of the shield, and the lower end of the spring fixedly connected to the lower portion of the shield;

[0030] The spring has a compressed state and a stretched state,

[0031] In the compressed state, the slider drives the traction frame to move upward, so that the automatic total station under the connecting frame is exposed;

[0032] In the stretched state, the slider drives the traction frame to move downward, so that the automatic total station below the connecting frame is covered by the shield.

[0033] As a preferred implementation option, preferably, folds with a wave-shaped structure are formed between the upper and lower parts of the shield described in this solution.

[0034] In this solution, in order to facilitate remote control, the controller can further integrate a communication module to receive remote control instructions to achieve operation control of the motor.

[0035] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention cleverly uses a shield made of waterproof cloth as one of the shield assembly components of the automatic total station, and utilizes the cooperation of the lifting assembly, the shield assembly and the bracket assembly, so that the lifting assembly drives the lower end of the shield of the shield assembly to be retracted upward or unfolded downward, so that the automatic total station under the connecting frame is exposed or covered by the shield in the accommodating cavity. The device is not only compact in structure, but also does not further expand outward when the shield of the shield assembly is retracted or unfolded downward, thereby encroaching on the tunnel limit space. While the surveyor can control the operation of the automatic total station through the background management system, he can also use the controller to control the lifting assembly to realize the exposure or covering of the automatic total station. The device of this solution is not only reliable in implementation and flexible in application, but can be reused in many scenarios of remote operation and control of the automatic total station to realize the covering of the automatic total station during non-working hours, reduce the time the automatic total station is exposed to the dust environment of the tunnel, effectively protect its precision characteristics and service life, and improve the remote deployment safety and reliability of the automatic total station. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is one of the schematic diagrams of the simplified implementation structure of the device embodiment of the present invention, which shows the automatic total station exposed after the shield of the shield assembly rises;

[0038] Figure 2 This is the second schematic diagram of the simplified implementation structure of the device embodiment of the present invention, which shows the shield of the shield assembly lowering to shield the automatic total station;

[0039] Figure 3 It corresponds to Figure 2 The partial cutaway diagram of the implementation structure and state shown;

[0040] Figure 4 It corresponds to Figure 1 A two-dimensional perspective diagram of the embodiment structure and state and an enlarged diagram of some local structures;

[0041] Figure 5 This is one of the schematic diagrams of the embodiment of the present invention when used in a tunnel, showing a schematic diagram of the automatic total station being covered after the shield of the shield assembly is lowered;

[0042] Figure 6 This is the second schematic diagram of the embodiment of the present device when used in a tunnel, which shows the automatic total station exposed after the shield of the shield assembly rises. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be noted that the following examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Similarly, the following examples are merely partial embodiments of the present invention and are not intended to be exhaustive. All other embodiments derived by persons of ordinary skill in the art without inventive effort are intended to fall within the scope of protection of the present invention.

[0044] like Figures 1 to 6 As shown in FIG. 1 , this embodiment provides a protective cover device for an automatic total station for tunnel monitoring, comprising:

[0045] The bracket assembly 1 includes a base 11, a support rod 12, and a connecting frame 13. The base 11 is used to be fixedly installed on the side wall of the tunnel. The lower end of the support rod 12 is fixedly connected to the base 11, and the other end thereof extends vertically upward. The connecting frame 13 is fixedly connected to the upper end of the support rod 12. The automatic total station 5 is placed below the connecting frame 13. The automatic total station 5 is arranged on the end of the base 11 below the connecting frame 13;

[0046] The shield assembly 2 includes a shield 21 made of waterproof cloth. The shield 21 is a cylindrical structure with an open lower end. The upper end of the shield 21 is fixedly connected to the connecting frame 13. The lower end of the shield 21 hangs downward and has an accommodating cavity 211 formed therein. The accommodating cavity 211 is used to cover the automatic total station 5 placed below the connecting frame 13.

[0047] The lifting assembly 3 is provided on one side of the support assembly 1 and has a lifting drive end connected to the lower end of the shield 21. The lifting assembly 3 drives the lower end of the shield 21 to retract upward or unfold downward, so that the automatic total station 5 below the connecting frame 13 is exposed or covered by the shield 21 in the accommodating cavity 211;

[0048] The controller 4 is connected to the lifting assembly 3 and controls the opening and closing of the lifting assembly 3.

[0049] Among them, as a possible implementation method, further, the connecting frame 13 of the bracket assembly 1 described in this solution is a circular ring structure, and the connecting frame 13 and the base 11 are arranged opposite to each other up and down, and the support rod 12 is a cylindrical rod, which is arranged vertically, and the upper end is fixedly connected to one side of the connecting frame 13, and the lower end is fixedly connected to the base 11; and preferably, the base 11 of the bracket assembly 1 described in this solution can also be a circular ring structure, wherein the connecting frame 13, which is a circular ring structure, is arranged opposite to the base 11 up and down.

[0050] In this solution, based on the complex working conditions during tunnel construction, there may be areas on the ground where it is difficult to directly place the automatic total station 5. Therefore, as a better implementation option, preferably, the base 11 of the bracket assembly 2 in this solution is used to be fixedly installed on the side wall of the tunnel (such as Figure 5 、 Figure 6 As shown), in order to facilitate the installation of the base 11, one end thereof is provided with a mounting plate 111 for fixing the base 11 on the side wall of the tunnel, and the mounting plate 111 is provided with a plurality of mounting holes 1111. The other end of the base 11 is connected to the automatic total station 5, that is, the automatic total station is directly installed at the other end of the base 11.

[0051] Regarding the connection of the shield 21 , as a preferred implementation option, preferably, the upper end face edge of the cylindrical structure of the shield 21 in this solution is fixedly connected to the inner circumference of the annular structure of the connecting frame 13 .

[0052] In this solution, the upward folding or downward unfolding of the shield 21 depends on the lifting assembly 3. As a preferred implementation option, preferably, the lifting assembly 3 in this solution includes:

[0053] A screw rod 31 is vertically arranged on one side of the support rod 12. A connecting block 14 is provided at the upper end of the support rod 12. A polished rod portion 311 is provided at the upper end of the screw rod 31. The screw rod 31 rotatably passes through the connecting block 14 through the polished rod portion 311. The lower end of the screw rod 31 extends downward.

[0054] The motor 32 is provided on the base 11. The motor 32 is connected to the controller 4, and the controller 4 controls the operation of the motor 32. Preferably, the motor 32 in this solution is a servo reduction motor;

[0055] The transmission mechanism 33 is connected to the lower end of the screw rod 31 and the driving end 321 of the motor 32, respectively. The motor 32 outputs a transmission force to drive the screw rod 31 to rotate through the transmission mechanism 333.

[0056] The slider 34 is a plate-like structure, and is provided with a threaded hole 341 and a guide groove 342. The slider 34 is threadedly connected to the screw rod 31 through the threaded hole 341, and the guide groove 342 is inserted and matched with the support rod 12.

[0057] The traction frame 35 is an annular structure adapted to the diameter of the shield 21, one side of which is fixedly connected to the side of the slider 34 away from the screw rod 31, and the lower end edge of the shield 21 is fixedly connected to the inner circumference or outer circumference of the annular structure of the traction frame 35;

[0058] In the above solution, when the screw rod 31 rotates, the slider 34 drives the traction frame 35 to move upward or downward, so that the automatic total station 5 below the connecting frame 13 is exposed or covered by the protective cover 21.

[0059] In this solution, as a preferred implementation option, preferably, a first through hole is provided on the connecting block 14 of this solution, a first bearing 132 is provided on the first through hole, the outer ring of the first bearing 132 is fixedly connected to the inner wall of the first through hole, and the light rod portion 311 of the screw rod 31 passes through the inner ring of the first bearing and is fixedly connected to the inner ring of the first bearing 132.

[0060] In this solution, in order to facilitate remote control, the controller 5 can further integrate a communication module to receive remote control instructions to realize the operation control of the motor 32. This is a relatively conventional equipment remote control technology, and its working principle and details will not be elaborated here.

[0061] As a preferred implementation option, preferably, the transmission mechanism 33 of this solution includes:

[0062] The mounting housing 331 is a box-shaped housing structure with a mounting cavity 3311 formed therein. The mounting housing 331 is disposed below the screw rod 31. The lower end of the screw rod 31 is a polished rod structure 312 that rotatably penetrates into the mounting housing 331. The driving end 321 of the motor 32 penetrates into the mounting housing 331. The mounting housing 331 is provided with avoidance holes 3313 corresponding to the insertion positions of the screw rod 31 and the motor 32.

[0063] A first bevel gear 332 is provided at the lower end of the screw rod 31;

[0064] The second bevel gear 333 is provided on the driving end 321 of the motor 32 and is meshed with the first bevel gear 332;

[0065] The second bearing 334 is arranged in the mounting shell 331, and its outer ring is fixedly connected to the inner wall of the mounting shell 331 through the connecting piece 3312. The lower end of the screw rod 31 passes through the inner ring of the second bearing 334 and is fixedly connected to the inner ring of the second bearing 334.

[0066] Under this structural situation, the controller 4 can start by controlling the motor 32 to drive the second bevel gear 333 through the driving end 321 of the motor 32 to drive the first bevel gear 331 to rotate, so that the screw rod 31 connected to the first bevel gear 331 rotates accordingly, and the rotation of the screw rod 31 will drive the slider 34 to drive the traction frame 35 to move upward or downward, so that the automatic total station 5 under the connecting frame 13 is exposed or covered by the protective cover 21.

[0067] In this solution, the motor 32 can be a DC motor. Based on the characteristics of the DC motor, the forward and reverse switching of the driving end of the DC motor can be achieved by controlling the positive and negative pole switching of its current input, thereby realizing the rotation switching of the screw rod 31, and thus realizing the lifting and sliding of the slider 34.

[0068] In this solution, since the shield 21 is made of waterproof cloth, which has a relatively soft property, in order to avoid the shield 21 from causing a large local lateral deviation due to force when it is retracted upward, causing the unexposed part of the automatic total station 5 to be interfered with and pushed by the shield 21, as a preferred implementation option, preferably, the shield assembly 2 of this solution further includes:

[0069] a spring 22 having a diameter adapted to the shield 21 and spirally wound around the outer or inner circumference of the shield 21 , with the upper end of the spring 22 fixedly connected to the upper portion of the shield 21 and the lower end of the spring 22 fixedly connected to the lower portion of the shield 22 ;

[0070] The spring 22 has a compressed state and a stretched state.

[0071] In the compressed state, the slider 34 drives the traction frame 35 to move upward, so that the automatic total station 5 below the connecting frame 13 is exposed;

[0072] In the stretched state, the slider 34 drives the traction frame 35 to move downward, so that the automatic total station 5 below the connecting frame 13 is covered by the protective cover 21 .

[0073] In this solution, the spring 22 can provide a certain degree of shape retention effect for the shield 21.

[0074] At the same time, as a better implementation option, preferably, a wavy structure of folds 212 is formed between the upper and lower parts of the shield 21 in this solution. Through the guidance of the fold 212 structure, the shield 21 can have a better range of morphological changes whether it is unfolded or folded.

[0075] exist Figures 1 to 4 Based on one of the shown Figure 5 or Figure 6 As shown, when the protective cover device of this embodiment is used, bolts or other connecting parts can be passed through the mounting holes 1111 on the mounting plate 111 at one end of the base 11, so that the bracket assembly 1 together with the protective cover assembly 2, the lifting assembly 3 and other components are fixed to the side wall of the tunnel, and then the lifting assembly 3 is controlled by the controller 4 to raise and retract the protective cover 21 of the protective cover assembly 2 so that it is exposed to a certain space, and then the automatic total station 5 is installed at the other end of the base 11.

[0076] After the automatic total station 5 is installed, the backstage manager can start the lifting assembly 3 to control the action of the shield assembly 2 through the controller 4 as needed. When the automatic total station 5 needs to perform measurement work, the shield 21 of the shield assembly 2 is retracted upward to expose the automatic total station 5 (such as Figure 6 When the automatic total station 5 is not needed, the shield 21 is unfolded downward to cover the automatic total station 5 (as shown in FIG. Figure 5 As shown), so as to prevent the dust in the tunnel from accumulating on the surface of the automatic total station 5.

[0077] The above description is only part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protective cover device for an automatic total station for tunnel monitoring, characterized in that: It includes: A bracket assembly comprising a base, a support rod, and a connecting frame. The base is fixedly mounted on the side wall of the tunnel. The lower end of the support rod is fixedly connected to the base, and the other end thereof extends vertically upward. The connecting frame is fixedly connected to the upper end of the support rod. An automatic total station is placed below the connecting frame. A shield assembly, comprising a shield made of waterproof cloth, the shield being a cylindrical structure with an open lower end, the upper end of which is fixedly connected to the connecting frame, the lower end of which hangs downward, and an accommodating cavity formed therein, the accommodating cavity being used to accommodate the automatic total station cover placed below the connecting frame; A lifting assembly is provided on one side of the bracket assembly and has a lifting drive end connected to the lower end of the shield. The lifting assembly drives the lower end of the shield to be retracted upward or extended downward, so that the automatic total station below the connecting frame is exposed or covered by the shield in the accommodating cavity. A controller connected to the lifting assembly and controlling its operation and opening and closing; The connecting frame of the bracket assembly is a circular ring structure, the connecting frame and the base are arranged vertically opposite to each other, the support rod is a cylindrical rod, which is vertically arranged, and the upper end of the support rod is fixedly connected to one side of the connecting frame, and the lower end of the support rod is fixedly connected to the base; The upper end surface edge of the cylindrical structure of the shield is fixedly connected to the inner circumference of the annular structure of the connecting frame; The lifting assembly comprises: A screw rod is vertically arranged on one side of the support rod, a connecting block is provided at the upper end of the support rod, a polished rod portion is provided at the upper end of the screw rod, the screw rod rotatably passes through the connecting block through the polished rod portion, and the lower end of the screw rod extends downward; A motor is provided on the base, the motor is connected to the controller, and the controller controls the opening and closing of the motor; A transmission mechanism is connected to the lower end of the screw and the driving end of the motor respectively, and the motor outputs a transmission force to drive the screw to rotate through the transmission mechanism; The slider is a plate-like structure with a threaded hole and a guide groove respectively provided thereon. The slider is threadedly connected to the screw rod through the threaded hole, and the guide groove is fitted with the support rod; The traction frame is an annular structure adapted to the diameter of the shield, one side of which is fixedly connected to the side of the slider away from the screw rod, and the lower end edge of the shield is fixedly connected to the inner circumference or outer circumference of the annular structure of the traction frame; When the screw rod rotates, the slider drives the traction frame to move upward or downward, so that the automatic total station under the connecting frame is exposed or covered by the protective cover; The shield assembly further comprises: a spring having a diameter adapted to the shield, helically wound around the outer circumference or inner circumference of the shield, with the upper end of the spring fixedly connected to the upper portion of the shield, and the lower end of the spring fixedly connected to the lower portion of the shield; The spring has a compressed state and a stretched state, In the compressed state, the slider drives the traction frame to move upward, so that the automatic total station under the connecting frame is exposed; In the stretched state, the slider drives the traction frame to move downward, so that the automatic total station below the connecting frame is covered by the shield; Corrugations with a wave-like structure are formed between the upper portion and the lower portion of the shield.

2. The tunnel monitoring automatic total station protective cover device according to claim 1, characterized in that: One end of the base of the bracket assembly is provided with a mounting plate for fixing the base on the side wall of the tunnel, and the mounting plate is provided with a plurality of mounting holes. The other end of the base is connected to the automatic total station.

3. The tunnel monitoring automatic total station protective cover device according to claim 1, characterized in that: The connecting block is provided with a first through hole, the first through hole is provided with a first bearing, the outer ring of the first bearing is fixedly connected to the inner wall of the first through hole, and the smooth rod portion of the screw rod passes through the inner ring of the first bearing and is fixedly connected to the inner ring of the first bearing.

4. The tunnel monitoring automatic total station protective cover device according to claim 3, characterized in that: The transmission mechanism comprises: The mounting housing is a box-shaped housing structure with a mounting cavity formed therein. The mounting housing is arranged below the screw rod. The lower end of the screw rod is a polished rod structure and is rotatably inserted into the mounting housing. The driving end of the motor is inserted into the mounting housing. The mounting housing is provided with avoidance holes corresponding to the insertion positions of the screw rod and the motor. A first bevel gear is provided at the lower end of the screw rod; a second bevel gear, disposed on a driving end of the motor and meshingly connected with the first bevel gear; The second bearing is arranged in the mounting shell, and its outer ring is fixedly connected to the inner wall of the mounting shell through a connecting piece. The lower end of the screw rod passes through the inner ring of the second bearing and is fixedly connected to the inner ring of the second bearing.

5. The tunnel monitoring automatic total station protective cover device according to claim 1, characterized in that: The motor is a servo reduction motor.

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