CN114623810A - Total station protection device and protection method thereof - Google Patents

Total station protection device and protection method thereof Download PDF

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Publication number
CN114623810A
CN114623810A CN202210348224.6A CN202210348224A CN114623810A CN 114623810 A CN114623810 A CN 114623810A CN 202210348224 A CN202210348224 A CN 202210348224A CN 114623810 A CN114623810 A CN 114623810A
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CN
China
Prior art keywords
fixing device
fixing
heat dissipation
rod
total station
Prior art date
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Pending
Application number
CN202210348224.6A
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Chinese (zh)
Inventor
席海鹏
王晓磐
李忠善
梁占旭
郭长坤
代文晨
张廷雷
黄振卫
侯俊岭
张富选
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China Railway Engineering Consulting Group Co Ltd
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China Railway Engineering Consulting Group Co Ltd
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Publication date
Application filed by China Railway Engineering Consulting Group Co Ltd filed Critical China Railway Engineering Consulting Group Co Ltd
Priority to CN202210348224.6A priority Critical patent/CN114623810A/en
Publication of CN114623810A publication Critical patent/CN114623810A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24Housings ; Casings for instruments
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The invention relates to the technical field of measurement, in particular to a total station instrument protection device and a protection method thereof, wherein the total station instrument protection device comprises: the device comprises a first fixing device, a second fixing device, a fixing rod and a top cover, wherein the first fixing device is in a circular ring shape, the second fixing device is arranged along the height direction of the first fixing device, the second fixing device is in a circular ring shape, the diameter of the first fixing device is the same as that of the second fixing device, a gap is formed between the first fixing device and the second fixing device, at least one fixing rod is arranged, one end of the fixing rod is fixedly connected with the first fixing device, the other end of the fixing rod is fixedly connected with the second fixing device, the top cover is arranged at the top of the second fixing device, and the top cover is fixedly connected with the second fixing device.

Description

Total station protection device and protection method thereof
Technical Field
The invention relates to the technical field of measurement, in particular to a total station protection device and a total station protection method.
Background
The automatic deformation monitoring based on the total station equipment is widely applied to deformation monitoring projects in the fields of railways, high-speed railways, foundation pits, dams, side slopes, tunnels, high buildings and the like, the total station equipment needs to be fixed on observation piers or observation supports on the monitoring project site for long time for observation due to the requirement of normal development of monitoring work, and the total station equipment has higher requirements on the anti-theft protection work of the total station equipment.
Disclosure of Invention
The present invention aims to provide a total station protection device and a protection method thereof, so as to improve the above problems. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in one aspect, the application provides a total powerstation protection device, including first fixing device, second fixing device, dead lever and top cap, first fixing device is ring shape, the second fixing device is followed first fixing device's direction of height sets up, the second fixing device is ring shape, first fixing device with the second fixing device diameter is the same, first fixing device with be provided with the clearance between the second fixing device, the dead lever is provided with at least one, the one end of dead lever with first fixing device is fixed continuous, the other end of dead lever with the second fixing device is fixed continuous, the top cap sets up second fixing device's top, the top cap with second fixing device is fixed continuous.
On the other hand, the application provides a total station protection method, which is characterized in that: fixing the first fixing device: centering the centering disc of the observation pier, and fixing the first fixing device on the centering disc; installing a lifting component: after the first fixing device is fixed, at least one driving rod is arranged inside a second fixing device, then a movable cover is installed, a top cover is fixed to the top of the second fixing device through welding, a guide rod penetrates through a limiting block, and two ends of the guide rod are fixed to the first fixing device and the top cover respectively; fixing the first fixing device and the second fixing device: arranging a first heat dissipation hole on the first fixing device, arranging a second heat dissipation hole on the second fixing device, respectively fixing two ends of a fixing rod on a first fixing plate and a second fixing plate, and respectively fixing the first fixing plate and the second fixing plate by screws; spraying heat dissipation coating: and cleaning the surface of the total station protection device, and spraying heat dissipation coating.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the heat dissipation holes are formed in the first fixing device and the second fixing device, so that the problems that the internal temperature is too high due to no convection of internal air when the total station is in a non-working state, and the measurement result precision is poor due to the temperature difference between the inside and the outside of the protection device when the total station is in work are solved effectively, and in addition, the problems that the relative precision component equipment of the total station is damaged due to the long-time high temperature in the protection device and the service life of the total station is shortened when the total station is in a non-working state are solved.
2. According to the invention, the fixed rod is detachably connected with the first fixing device and the second fixing device, so that the problem that the fixed rod possibly shields the monitoring sight of the total station is effectively solved.
3. According to the invention, the outer surface of the protection device is sprayed with white, so that the heat can be quickly dissipated, and the temperature in the protection device is reduced.
4. The screws of the invention are all anti-theft screws and are fixed from the inside of the protection device, so that the protection device cannot be opened from the outside of the protection device through a wrench, and the anti-theft protection function of the total station is effectively enhanced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of the interior of a total station protection device in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the closing of the movable cover in the embodiment of the invention.
Fig. 3 is a schematic structural diagram of the movable cover in the embodiment of the present invention.
The labels in the figure are: 1. a first fixing device; 2. a movable cover; 3. a second heat dissipation hole; 4. a second fixing device; 5. a top cover; 6. a second fixing plate; 7. fixing the rod; 8. a guide bar; 9. a limiting block; 10. a first heat dissipation hole; 11. a piston rod; 12. a sleeve; 13. a first fixing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1, the present embodiment provides a total station anti-theft protection device, including a first fixing device 1, a second fixing device 4, a fixing rod 7, and a top cover 5, where the first fixing device 1 is in a ring shape; the second fixing device 4 is arranged along the height direction of the first fixing device 1, the second fixing device 4 is in a ring shape, the diameters of the first fixing device 1 and the second fixing device 4 are the same, and a gap is arranged between the first fixing device 1 and the second fixing device 4; at least one fixing rod 7 is arranged, one end of the fixing rod 7 is fixedly connected with the first fixing device 1, and the other end of the fixing rod 7 is fixedly connected with the second fixing device 4; the top cover 5 is arranged on the top of the second fixing device 4, the top cover 5 is fixedly connected with the second fixing device 4, the total station has enough visual field for measurement when in work by arranging a gap between the first fixing device 1 and the second fixing device 4, and in addition, the top cover 5 arranged on the second fixing device 4 can protect the total station in rainy days.
In a specific embodiment of this disclosure, be provided with lifting unit between first fixing device 1 and the second fixing device 4, lifting unit includes the actuating lever, activity cover 2 and guide arm 8, the actuating lever includes at least one, the actuating lever sets up the inside at second fixing device 4, the actuating lever links to each other with second fixing device 4 is fixed, activity cover 2 sets up the tip at the actuating lever, the actuating lever links to each other with activity cover 2 is fixed, guide arm 8 is provided with at least one, guide arm 8 sets up the inside at activity cover 2, guide arm 8 sets up along activity cover 2 circumference, the one end of guide arm 8 links to each other with first fixing device 1 is fixed, the other end and the top cap 5 of guide arm 8 are fixed continuous, guide arm 8 evenly sets up along activity cover 2 circumference, the stability of structure has been guaranteed.
In a specific embodiment of this disclosure, be provided with at least one stopper 9 on the activity cover 2, stopper 9 sets up in the inside of activity cover 2, and stopper 9 is followed 2 circumference settings of activity cover are provided with the hole the same with the 8 diameters of guide arm on the stopper 9, and guide arm 8 passes the hole, can carry on spacingly when following the up-and-down motion of guide arm 8 to activity cover 2 through the stopper, guarantees that activity cover 2 only can carry out the up-and-down motion at guide arm 8.
As shown in fig. 2 or fig. 3, in an embodiment of the present disclosure, the driving rod includes a sleeve 12 and a piston rod 11, the sleeve 12 is disposed inside the second fixing device 4, the piston rod 11 is disposed inside the sleeve 12, a top of the piston rod 11 is fixedly connected to the movable cover 2, by making a piston movement of the piston rod 11 inside the sleeve 12, the movable cover 2 can be opened and closed, and when the total station does not need to perform a surveying operation, the piston rod 11 is pushed out from inside the sleeve 12, so as to open the movable cover 2 to protect the total station; when the total station needs to perform measurement, the piston rod 11 is retracted inside the sleeve 12, so that the movable cover is closed, and the total station is ensured to have a sufficient view for measurement.
In one embodiment of the present disclosure, the height of the movable hood 2 is greater than the gap between the first and second fixtures 1 and 4.
In one embodiment of the present disclosure, one end of the fixing rod 7 is provided with a first fixing plate 13, the other end of the fixing rod 7 is provided with a second fixing plate 6, the fixing rod 7 is fixedly connected with the first fixing plate 13, the fixing rod 7 is fixedly connected with the second fixing plate 6, the first fixing plate 13 is detachably connected with the first fixing device 1 through a screw, the second fixing plate 6 is detachably connected with the second fixing device 4 through a screw, two ends of the fixing rod 7 are fixed on the first fixing plate 13 and the second fixing plate 6 through welding, the fixation of the first fixation means 1 and the second fixation means 4 is achieved by means of the first fixation plate 13 and the second fixation plate 6, which, when the protection device is mounted, according to the measuring point of the total station, the first fixing device 1 and the second fixing device 4 are flexibly adjusted to be fixed, and the fixed rod 7 is prevented from blocking the view of a monitoring point.
In one embodiment of the present disclosure, at least one first heat dissipation hole 10 is disposed on a first fixing device 1, the first heat dissipation holes 10 are circumferentially disposed along the first fixing device 1, the first heat dissipation holes 10 are disposed at intervals, at least one second heat dissipation hole 3 is disposed on a second fixing device 4, the second heat dissipation holes 3 are circumferentially disposed along the second fixing device 4, the second heat dissipation holes 3 are disposed at intervals, the first heat dissipation holes 10 and the second heat dissipation holes 3 are both provided with threads, the distance between two adjacent first heat dissipation holes 10 is the same as the distance between two adjacent second heat dissipation holes 3, the problem that the total station has poor measurement accuracy due to the difference in temperature between the inside and the outside of the protection device when the total station is in operation due to the non-convection of the internal air when the total station is not in operation can be effectively solved through the first heat dissipation holes 10 and the second heat dissipation holes 3, still solved the total powerstation when inoperative state, the relevant accurate components and parts equipment of total powerstation still can be damaged to the high temperature of long time in the protection device, reduce total powerstation life's problem, simultaneously, first fixed plate 13 is fixed dead lever 7 with second fixed plate 6 through first louvre 10 and second louvre 3, distance between two adjacent first louvres 10 is the same with distance between two adjacent second louvres 3, can also guarantee dead lever 7 and first fixing device 1 and the perpendicular setting of second fixing device 4 when fixed, the stability of first fixing device 1 and the connection of second fixing device 4 has been guaranteed.
Example 2
The embodiment provides a total station protection method, which comprises the following steps: fixing the first fixing device 1: centering the centering disc of the observation pier, and fixing the first fixing device 1 on the centering disc; installing a lifting component: after the first fixing device 1 is fixed, at least one driving rod is arranged inside the second fixing device 4, the movable cover 2 is installed, the top cover 5 is fixed on the top of the second fixing device 4 through welding, the guide rod 8 penetrates through the limiting block 9, and two ends of the guide rod 8 are respectively fixed on the first fixing device 1 and the top cover 5 of 8; fixing the first fixing device 1 and the second fixing device 4: arranging a first heat dissipation hole 10 on the first fixing device 1, arranging a second heat dissipation hole 3 on the second fixing device 4, respectively fixing two ends of a fixing rod 7 on a first fixing plate 13 and a second fixing plate 6, and respectively fixing the first fixing plate 13 and the second fixing plate 6 by screws; spraying heat dissipation coating: the surface of the total station protection device is cleaned, the heat dissipation coating is sprayed, and the sprayed heat dissipation coating and the heat dissipation holes are matched for use, so that the air inside the protection device and the air outside the protection device can be in convection, the temperature difference between the internal temperature and the external temperature of the protection device is reduced, and the measurement precision of the total station is ensured.
In a specific embodiment of this disclosure, adopt the mode that the theftproof screw combines with first louvre 10 and second louvre 3 from the protection device is inside, fix first fixed plate 13 and second fixed plate 6, can make the protection device can't be opened from the protection device outside through the spanner to the other people, the effectual theftproof protect function to the total powerstation that has strengthened.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A total station protection device, comprising:
the first fixing device (1), the first fixing device (1) is ring-shaped;
the second fixing device (4) is arranged along the height direction of the first fixing device, the second fixing device (4) is annular, the diameters of the first fixing device (1) and the second fixing device (4) are the same, and a gap is formed between the first fixing device (1) and the second fixing device (4);
at least one fixing rod (7) is arranged, one end of each fixing rod (7) is fixedly connected with the first fixing device (1), and the other end of each fixing rod (7) is fixedly connected with the second fixing device (4); and
the top cover (5), top cover (5) set up the top of second fixing device (4), top cover (5) with second fixing device (4) are fixed continuous.
2. The total station protection device according to claim 1, characterized in that: a lifting component is arranged between the first fixing device (1) and the second fixing device (4), the lifting component comprises a driving rod, a movable cover (2) and a guide rod (8), the driving rod comprises at least one, the driving rod is arranged inside the second fixing device (4), the driving rod is fixedly connected with the second fixing device (4), the movable cover (2) is arranged at the end part of the driving rod, the driving rod is fixedly connected with the movable cover (2), at least one guide rod (8) is arranged, the guide rod (8) is arranged in the movable cover (2), the guide rod (8) is arranged along the circumference of the movable cover (2), one end of the guide rod (8) is fixedly connected with the first fixing device (1), the other end of the guide rod (8) is fixedly connected with the top cover (5).
3. The total station protection device according to claim 2, characterized in that: be provided with at least one stopper (9) on the activity cover (2), stopper (9) set up the inside of activity cover, stopper (9) are followed activity cover (2) circumference sets up, be provided with on stopper (9) with the hole that guide arm (8) diameter is the same, guide arm (8) pass the hole.
4. The total station protection device according to claim 2, characterized in that: the driving rod comprises a sleeve (12) and a piston rod (11), the sleeve (12) is arranged inside the second fixing device (4), the piston rod (11) is arranged inside the sleeve (12), and the top of the piston rod (11) is fixedly connected with the movable cover (2).
5. The total station protection device according to claim 2, characterized in that: the height of the movable cover (2) is larger than the gap between the first fixing device (1) and the second fixing device (4).
6. The total station protection device according to claim 1, characterized in that: one end of the fixing rod (7) is provided with a first fixing plate (13), the other end of the fixing rod (7) is provided with a second fixing plate (6), the fixing rod (7) is fixedly connected with the first fixing plate (13), the fixing rod (7) is fixedly connected with the second fixing plate (6), the first fixing plate (13) is detachably connected with the first fixing device (1) through a screw, and the second fixing plate (6) is detachably connected with the second fixing device (4) through a screw.
7. A total station protection device according to claim 1, characterized in that: the heat dissipation device is characterized in that at least one first heat dissipation hole (10) is formed in the first fixing device (1), the first heat dissipation hole (10) is circumferentially arranged along the first fixing device (1), the first heat dissipation holes (10) are arranged at intervals, at least one second heat dissipation hole (3) is formed in the second fixing device (4), the second heat dissipation hole (3) is circumferentially arranged along the second fixing device (4), and the second heat dissipation hole (3) is arranged at intervals.
8. The total station protection device according to claim 7, characterized in that: the first heat dissipation holes (10) and the second heat dissipation holes (3) are provided with threads, and the distance between every two adjacent first heat dissipation holes (10) is the same as the distance between every two adjacent second heat dissipation holes (3).
9. A total station protection method, a total station protection device as claimed in any one of claims 1-8, comprising the steps of:
-fixing the first fixing device (1): centering an observation pier centering disc, and fixing the first fixing device (1) on the centering disc;
installing a lifting assembly: after the first fixing device (1) is fixed, at least one driving rod is arranged inside the second fixing device (4), the movable cover (2) is installed, the top cover (5) is fixed to the top of the second fixing device (4) through welding, the guide rod (8) penetrates through the limiting block (9), and two ends of the guide rod (8) are respectively fixed to the first fixing device (1) and the top cover (5) (8);
-fixing the first fixing device (1) and the second fixing device (4): arranging a first heat dissipation hole (10) on the first fixing device (1), arranging a second heat dissipation hole (3) on the second fixing device (4), respectively fixing two ends of a fixing rod (7) on a first fixing plate (13) and a second fixing plate (6), and respectively fixing the first fixing plate (13) and the second fixing plate (6) by screws;
spraying heat dissipation coating: and cleaning the surface of the total station protection device, and spraying heat dissipation coating.
10. The total station protection method according to claim 9, characterized in that: and fixing the first fixing plate (13) and the second fixing plate (6) by adopting a mode that an anti-theft screw is combined with the first heat dissipation hole (10) and the second heat dissipation hole (3) from the inside of the protection device.
CN202210348224.6A 2022-04-01 2022-04-01 Total station protection device and protection method thereof Pending CN114623810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210348224.6A CN114623810A (en) 2022-04-01 2022-04-01 Total station protection device and protection method thereof

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Application Number Priority Date Filing Date Title
CN202210348224.6A CN114623810A (en) 2022-04-01 2022-04-01 Total station protection device and protection method thereof

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CN114623810A true CN114623810A (en) 2022-06-14

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100312243A1 (en) * 2008-02-08 2010-12-09 Texas Scottish Rite Hospital For Children External fixator ring
CN208847233U (en) * 2018-11-15 2019-05-10 天津铁三院实业有限公司 Outdoor automatic measurement equipment mounting platform
CN210570673U (en) * 2019-09-20 2020-05-19 江苏省地质工程勘察院 Total powerstation protection device
CN211824444U (en) * 2020-05-29 2020-10-30 中铁西南科学研究院有限公司 Total powerstation protection device
CN213041237U (en) * 2020-09-18 2021-04-23 深圳市南山区建筑工务署 Protection device for automatic monitoring of total station
CN213336130U (en) * 2020-11-09 2021-06-01 山东科技大学 A protection and auxiliary device for total powerstation automatic monitoring
CN215768573U (en) * 2021-08-16 2022-02-08 武汉科技大学 Similar simulation test device for end ore drawing
CN216046574U (en) * 2021-09-01 2022-03-15 福建省建研工程顾问有限公司 Total station protection device for automatic monitoring

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100312243A1 (en) * 2008-02-08 2010-12-09 Texas Scottish Rite Hospital For Children External fixator ring
CN208847233U (en) * 2018-11-15 2019-05-10 天津铁三院实业有限公司 Outdoor automatic measurement equipment mounting platform
CN210570673U (en) * 2019-09-20 2020-05-19 江苏省地质工程勘察院 Total powerstation protection device
CN211824444U (en) * 2020-05-29 2020-10-30 中铁西南科学研究院有限公司 Total powerstation protection device
CN213041237U (en) * 2020-09-18 2021-04-23 深圳市南山区建筑工务署 Protection device for automatic monitoring of total station
CN213336130U (en) * 2020-11-09 2021-06-01 山东科技大学 A protection and auxiliary device for total powerstation automatic monitoring
CN215768573U (en) * 2021-08-16 2022-02-08 武汉科技大学 Similar simulation test device for end ore drawing
CN216046574U (en) * 2021-09-01 2022-03-15 福建省建研工程顾问有限公司 Total station protection device for automatic monitoring

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