CN215344861U - Multiple monitoring type operation and maintenance terminal - Google Patents

Multiple monitoring type operation and maintenance terminal Download PDF

Info

Publication number
CN215344861U
CN215344861U CN202121327902.8U CN202121327902U CN215344861U CN 215344861 U CN215344861 U CN 215344861U CN 202121327902 U CN202121327902 U CN 202121327902U CN 215344861 U CN215344861 U CN 215344861U
Authority
CN
China
Prior art keywords
maintenance
box
chamber
monitoring camera
monitoring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121327902.8U
Other languages
Chinese (zh)
Inventor
魏小亮
王玺
陆红飞
毛蔡伟
丁兆明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Jintanglang Yihe Technology Co ltd
Original Assignee
Suzhou Jintanglang Yihe Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Jintanglang Yihe Technology Co ltd filed Critical Suzhou Jintanglang Yihe Technology Co ltd
Priority to CN202121327902.8U priority Critical patent/CN215344861U/en
Application granted granted Critical
Publication of CN215344861U publication Critical patent/CN215344861U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Studio Devices (AREA)

Abstract

The utility model discloses a multiple monitoring operation and maintenance terminal, which comprises: box and chamber door, the chamber door articulates on the box, be provided with fortune dimension host computer in the box, be provided with first surveillance camera machine on the roof that holds the chamber in the box, the camera lens orientation of first surveillance camera machine holds the opening in chamber, still be provided with proximity switch on the roof that holds the chamber, be provided with the metal detection body on the chamber door, still be provided with the second surveillance camera machine on the roof that holds the chamber, the second surveillance camera machine is through first support fixed mounting on the roof that holds the chamber, the second surveillance camera machine articulates in the solid bottom of first support, the camera lens orientation fortune dimension host computer of second surveillance camera machine. Compared with the prior art, when the operation and maintenance personnel open the box body of the operation and maintenance terminal for maintenance, the multiple monitoring cameras record the maintenance work from multiple angles, the omnibearing recording of the maintenance work is convenient for the subsequent personnel who maintain the operation and maintenance terminal to analyze the reasons of the fault, and the operation and maintenance quality and efficiency are improved.

Description

Multiple monitoring type operation and maintenance terminal
Technical Field
The utility model belongs to the technical field of operation and maintenance systems, and particularly relates to a multiple monitoring type operation and maintenance terminal.
Background
After a large project such as a solar photovoltaic power generation project is assembled and put into use, the operation and maintenance terminals are distributed dispersedly due to the fact that the solar photovoltaic power generation project is wide in involved range. If the operation and maintenance terminal is lack of work such as inspection, washing and maintenance for a long time, the problem that the equipment exists is not checked and removed in time, and the service life of the photovoltaic equipment is greatly reduced. Therefore, in order to check and eliminate the problems of the operation and maintenance terminal in time and ensure the service life of the equipment, a large number of managers and field operation and maintenance personnel have to be equipped for operation and maintenance work.
Due to the fact that the number of operation and maintenance workers is too large, communication is not smooth, and after fault maintenance application of one operation and maintenance terminal occurs, repeated maintenance of the operation and maintenance terminal by a plurality of groups of outfield operation and maintenance workers easily occurs. Due to the fact that the levels of the operation and maintenance personnel are uneven, the maintenance quality cannot be guaranteed, meanwhile, the records of the maintenance process are lacked, the operation and maintenance personnel cannot maintain the operation and maintenance terminal in a targeted mode according to the last maintenance process of the operation and maintenance personnel, the fault reason can be better analyzed, and after repeated maintenance is conducted, the fault of the operation and maintenance terminal is complicated, the maintenance difficulty is further improved, and the maintenance efficiency of the operation and maintenance terminal is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: the utility model provides a multiple monitoring formula fortune dimension terminal, when fortune dimension personnel opened the box at fortune dimension terminal and maintained, a plurality of surveillance cameras carried out the record to maintenance work from a plurality of angles, and maintenance work's all-round record is convenient follow-up carries out the reason that the personnel analysis trouble that maintains to this fortune dimension terminal produced, improves fortune dimension quality and efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme: a multi-monitoring operation and maintenance terminal, comprising: box and chamber door, the chamber door articulates on the box, be provided with in the box and hold the chamber, it is provided with fortune dimension host computer to hold the intracavity, it is provided with first surveillance camera machine on the roof in chamber to hold, the camera lens orientation of first surveillance camera machine holds the opening in chamber, be provided with proximity switch on the roof in chamber that holds of first surveillance camera machine one side, be provided with the metal detection body that the position corresponds proximity switch on the chamber door, still be provided with the second surveillance camera machine on the roof in chamber holds, the second surveillance camera machine is through first support fixed mounting on the roof in chamber holds, the second surveillance camera machine articulates in the solid bottom of first support, the camera lens orientation fortune dimension host computer of second surveillance camera machine.
As a further description of the above technical solution:
first surveillance camera passes through first mount pad fixed mounting on the roof that holds the chamber, and rotatable the installing on first mount pad of first surveillance camera.
As a further description of the above technical solution:
the holding cavity is further provided with a limiting device, the limiting device comprises a first limiting seat, a connecting rod and a second limiting seat, the first limiting seat is fixedly installed on the top wall of the holding cavity, the second limiting seat is fixedly installed on the box door, a first connector of the first limiting seat is connected to the waist-shaped hole in the connecting rod in a sliding mode, and a second connector of the second limiting seat is hinged to the connecting rod.
As a further description of the above technical solution:
the top wall of the accommodating cavity is provided with a first sliding rail, and the first limiting seat is connected to the first sliding rail in a sliding mode.
As a further description of the above technical solution:
the first support is connected in the waist-shaped hole in a sliding mode.
As a further description of the above technical solution:
the accommodating cavity is also internally provided with a third monitoring camera which is fixedly arranged on the bottom surface of the accommodating cavity through a second support.
As a further description of the above technical solution:
the bottom surface of the accommodating cavity is provided with a second sliding rail, and the second support is connected to the second sliding rail in a sliding mode.
As a further description of the above technical solution:
the third monitoring camera is rotatably arranged on the top of the second bracket.
As a further description of the above technical solution:
the lateral surface of chamber door is provided with fingerprint lock device.
As a further description of the above technical solution:
an accessory box is further arranged on the inner side face of the box door, and the position of the accessory box corresponds to a gap between the two supporting legs of the operation and maintenance host machine.
In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, when an operation and maintenance worker opens the door hinged on the box body, so that an operation and maintenance host arranged in the box body is maintained, the proximity switch on the top wall of the accommodating cavity cannot sense a metal detection body on the door along with the opening of the door, the proximity switch controls the first monitoring camera to start up for shooting, and the shooting record can be carried out on the operation and maintenance worker (opening the door) due to the fact that the lens of the first monitoring camera faces the opening of the accommodating cavity. The second monitoring camera needs to be opened by oneself when the fortune dimension staff is maintaining to adjust the shooting angle of second monitoring camera through the pivoted mode, so that note maintenance process, the reason that the personnel (through the maintenance process of record) analysis trouble that make things convenient for follow-up carrying out the maintenance to this fortune dimension host computer produced improves fortune dimension quality and efficiency. Because first surveillance camera machine passes through proximity switch control switching to just start when the chamber door is opened, can shoot the personnel's image of writing down and opening the chamber door the very first time, play the effect of theftproof.
2. In the utility model, for more comprehensive shooting, recording and maintenance work, the third monitoring camera is arranged at the diagonal position where the second monitoring camera is arranged in the accommodating cavity, and the second monitoring camera and the third monitoring camera record the maintenance process from different angles in an all-around manner, so that the reason for fault generation is conveniently analyzed by a person who subsequently maintains the operation and maintenance host (through the recorded maintenance process), and the operation and maintenance quality and efficiency are improved.
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 illustrating a closed state of a door of a multi-monitoring operation and maintenance terminal.
Fig. 2 is a schematic structural diagram illustrating a door opening state of a multi-monitoring operation and maintenance terminal.
Fig. 3 is a schematic structural diagram of a first monitoring camera in a multi-monitoring operation and maintenance terminal.
Fig. 4 is a schematic structural diagram of a third monitoring camera in a multi-monitoring operation and maintenance terminal.
Fig. 5 is a schematic view of an installation structure of a second monitoring camera in a multi-monitoring operation and maintenance terminal.
Fig. 6 is a partial schematic view of a position limiting device in a multi-monitoring operation and maintenance terminal.
Illustration of the drawings:
1. a box body; 11. an accommodating chamber; 111. a first slide rail; 112. a second slide rail; 2. a box door; 21. a metal detection body; 3. an operation and maintenance host; 31. supporting legs; 4. a first monitoring camera; 41. a proximity switch; 42. a first mounting seat; 5. a second monitoring camera; 51. a first bracket; 6. a limiting device; 61. a first limiting seat; 611. a first connector; 62. a connecting rod; 621. a kidney-shaped hole; 63. a second limiting seat; 631. a second connector; 7. a third monitoring camera; 71. a second bracket; 8. a fingerprint lock device; 9. an accessory case.
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 utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", and the like refer to the orientation or position relationship based on the drawings or the orientation or position relationship that the utility model product is usually placed when in use, and are only used for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the device or the element to be referred must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
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.
Referring to fig. 1-6, the present invention provides a technical solution: a multi-monitoring operation and maintenance terminal, comprising: box 1 and chamber door 2, chamber door 2 articulates on box 1, be provided with in the box 1 and hold chamber 11, it is provided with fortune dimension host computer 3 to hold in the chamber 11, be provided with first surveillance camera machine 4 on the roof that holds chamber 11, the camera lens orientation of first surveillance camera machine 4 holds the opening of chamber 11, be provided with proximity switch 41 on the roof that holds chamber 11 of first surveillance camera machine 4 one side, be provided with the metal detection body 21 that the position corresponds proximity switch 41 on the chamber door 2, still be provided with second surveillance camera machine 5 on the roof that holds chamber 11, second surveillance camera machine 5 is through first support 51 fixed mounting on the roof that holds chamber 11, second surveillance camera machine 5 articulates in the solid bottom of first support 51, the camera lens orientation fortune dimension host computer 3 of second surveillance camera machine 5.
First surveillance camera 4 passes through first mount pad 42 fixed mounting on the roof that holds chamber 11, and rotatable the installing on first mount pad 42 of first surveillance camera 4, first surveillance camera 4 can rotate on the horizontal direction when the installation to the adjustment camera lens orientation, thereby better record maintenance personal's maintenance process.
Hold still to be provided with stop device 6 in the chamber 11, stop device 6 includes first spacing seat 61, connecting rod 62 and the spacing seat 63 of second, first spacing seat 61 fixed mounting is on the roof that holds chamber 11, the spacing seat 63 fixed mounting of second is on chamber door 2, first connector 611 sliding connection of first spacing seat 61 is in waist type hole 621 on connecting rod 62, the second connector 631 of the spacing seat 63 of second articulates on connecting rod 62, stop device 6 restricts the angle that opens and shuts of chamber door 2 through connecting rod 62, prevent that the dust that the angle that opens and shuts of chamber door 2 too big leads to from getting into and holding in the chamber 11 and fortune dimension host computer 3. The risk of the operation and maintenance host 3 breaking down is reduced, and the operation and maintenance quality and efficiency are improved.
The top wall of the accommodating cavity 11 is provided with a first slide rail 111, the first limiting seat 61 is connected to the first slide rail 111 in a sliding manner, the first limiting seat 61 is adjusted in the sliding manner by the first slide rail 111 and is finally fixed to the top wall of the accommodating cavity 11, and the opening and closing angle of the box door 2 can be flexibly adjusted on the basis of the unchanged length of the connecting rod 62, so that the operation and maintenance work can be conveniently carried out.
First support 51 sliding connection is in waist type hole 621, and the position that further realizes second surveillance camera machine 5 is adjustable, and the fortune dimension personnel of being convenient for adjust the shooting angle of second surveillance camera machine, be convenient for note maintenance process, and the reason that the personnel analysis trouble that makes things convenient for follow-up carry out the maintenance to this fortune dimension host computer produced improves fortune dimension quality and efficiency.
Hold and still be provided with third surveillance camera machine 7 in the chamber 11, third surveillance camera machine 7 passes through second support 71 fixed mounting on the bottom surface that holds chamber 11, and second surveillance camera machine and third surveillance camera machine are from the all-round maintenance process of taking notes of angle of difference, and the personnel that make things convenient for follow-up to carry out the maintenance to this fortune dimension host computer (the maintenance process through the record) analysis failure produces the reason, improves fortune dimension quality and efficiency.
The bottom surface of the accommodating cavity 11 is provided with a second slide rail 112, the second support 71 is slidably connected to the second slide rail 112, and the third monitoring camera 7 is adjusted in position by sliding on the second slide rail 112 and is finally fixed to the bottom surface of the accommodating cavity 11, so that the adjustment of the third monitoring camera 7 can be performed with better recording and maintenance work.
The third monitoring camera 7 is rotatably mounted on the top of the second bracket 71, which is convenient for adjusting the angle of the third monitoring camera 7 for recording the maintenance work, so that the second monitoring camera and the third monitoring camera can record the maintenance process from different angles in an all-round way.
The lateral surface of chamber door 2 is provided with fingerprint lock device 8, and fortune dimension personnel could open the chamber door after verifying the fingerprint through fingerprint lock device 8, prevents that irrelevant personnel from opening chamber door 2 by mistake, further reduces the probability that 1 inside fortune dimension host computer 3 of box broke down, improves fortune dimension quality and efficiency.
Still be provided with accessory box 9 on the medial surface of chamber door 2, the gap between two supporting legss 31 of the corresponding fortune of accessory box 9 position host computer 3, accomodate the accessory that carries out conventional maintenance work commonly used in the accessory box 9, make things convenient for fortune dimension personnel to maintain. Simultaneously, because the accessory box 9 position corresponds the space between two supporting legss 31 of fortune dimension host computer 3, the height that highly equals supporting legss 31 of accessory box 9, accessory box 9 still plays the support and the positioning action to fortune dimension host computer 3 for fortune dimension host computer 3 holds the intracavity 11 installation at box 1 and stabilizes, further reduces fortune dimension host computer 3 and goes out the probability of trouble, improves fortune dimension quality and efficiency.
The working principle is as follows: open articulated chamber door on the box when fortune dimension personnel to when maintaining the fortune dimension host computer that sets up to box inside, along with opening of chamber door, the proximity switch on the roof that holds the chamber can not sense the metal detection body on the chamber door, and the first surveillance camera machine of proximity switch control is started and is shot, because the camera lens orientation of first surveillance camera machine holds the opening in chamber, can shoot the record to fortune dimension staff (opening the chamber door). The second monitoring camera needs to be opened by oneself when the fortune dimension staff is maintaining to adjust the shooting angle of second monitoring camera through the pivoted mode, so that note maintenance process, the reason that the personnel (through the maintenance process of record) analysis trouble that make things convenient for follow-up carrying out the maintenance to this fortune dimension host computer produced improves fortune dimension quality and efficiency. Because first surveillance camera machine passes through proximity switch control switching to just start when the chamber door is opened, can shoot the personnel's image of writing down and opening the chamber door the very first time, play the effect of theftproof. For more comprehensive shooting record maintenance work, the diagonal position of the installation of the second monitoring camera in the accommodating cavity is provided with a third monitoring camera, the second monitoring camera and the third monitoring camera record maintenance processes from different angles in an all-round manner, the reason for analyzing faults by a person (through the recorded maintenance process) who maintains the operation and maintenance host machine in a follow-up manner is facilitated, and the operation and maintenance quality and efficiency are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (10)

1. A multi-monitoring operation and maintenance terminal, comprising: the detection device comprises a box body (1) and a box door (2), wherein the box door (2) is hinged on the box body (1), a containing cavity (11) is arranged in the box body (1), an operation and maintenance host (3) is arranged in the containing cavity (11), a first monitoring camera (4) is arranged on the top wall of the containing cavity (11), a lens of the first monitoring camera (4) faces to an opening of the containing cavity (11), a proximity switch (41) is arranged on the top wall of the containing cavity (11) on one side of the first monitoring camera (4), a metal detection body (21) corresponding to the proximity switch (41) in position is arranged on the box door (2), a second monitoring camera (5) is further arranged on the top wall of the containing cavity (11), and the second monitoring camera (5) is fixedly installed on the top wall of the containing cavity (11) through a first support (51), the second monitoring camera (5) is hinged to the bottom of the first support (51), and a lens of the second monitoring camera (5) faces the operation and maintenance host (3).
2. A multiple monitoring operation and maintenance terminal according to claim 1, wherein the first monitoring camera (4) is fixedly mounted on the top wall of the accommodating cavity (11) through a first mounting seat (42), and the first monitoring camera (4) is rotatably mounted on the first mounting seat (42).
3. The multi-monitoring operation and maintenance terminal according to claim 1, wherein a position limiting device (6) is further disposed in the accommodating cavity (11), the position limiting device (6) comprises a first position limiting seat (61), a connecting rod (62) and a second position limiting seat (63), the first position limiting seat (61) is fixedly mounted on the top wall of the accommodating cavity (11), the second position limiting seat (63) is fixedly mounted on the box door (2), the first connecting head (611) of the first position limiting seat (61) is slidably connected in the kidney-shaped hole (621) of the connecting rod (62), and the second connecting head (631) of the second position limiting seat (63) is hinged on the connecting rod (62).
4. The multi-monitoring operation and maintenance terminal according to claim 3, wherein a first sliding rail (111) is disposed on a top wall of the accommodating cavity (11), and the first limiting seat (61) is slidably connected to the first sliding rail (111).
5. A multi-monitoring operation terminal according to claim 3, wherein the first bracket (51) is slidably connected in the kidney-shaped hole (621).
6. The multi-monitoring operation and maintenance terminal according to claim 1, wherein a third monitoring camera (7) is further disposed in the accommodating cavity (11), and the third monitoring camera (7) is fixedly mounted on the bottom surface of the accommodating cavity (11) through a second bracket (71).
7. The multi-monitoring operation and maintenance terminal according to claim 6, wherein a second sliding rail (112) is disposed on a bottom surface of the accommodating cavity (11), and the second bracket (71) is slidably connected to the second sliding rail (112).
8. A multi-monitoring operation and maintenance terminal according to claim 6 or 7, characterized in that the third monitoring camera (7) is rotatably mounted on top of the second bracket (71).
9. A multi-monitoring operation and maintenance terminal according to claim 1, characterized in that the outer side of the box door (2) is provided with a fingerprint lock device (8).
10. The multi-monitoring operation and maintenance terminal according to claim 1, wherein an accessory box (9) is further disposed on an inner side surface of the box door (2), and a position of the accessory box (9) corresponds to a gap between the two supporting legs (31) of the operation and maintenance host (3).
CN202121327902.8U 2021-06-15 2021-06-15 Multiple monitoring type operation and maintenance terminal Active CN215344861U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121327902.8U CN215344861U (en) 2021-06-15 2021-06-15 Multiple monitoring type operation and maintenance terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121327902.8U CN215344861U (en) 2021-06-15 2021-06-15 Multiple monitoring type operation and maintenance terminal

Publications (1)

Publication Number Publication Date
CN215344861U true CN215344861U (en) 2021-12-28

Family

ID=79557960

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121327902.8U Active CN215344861U (en) 2021-06-15 2021-06-15 Multiple monitoring type operation and maintenance terminal

Country Status (1)

Country Link
CN (1) CN215344861U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113489946A (en) * 2021-06-15 2021-10-08 苏州金螳螂怡和科技有限公司 Multiple monitoring type operation and maintenance system for improving operation and maintenance quality

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113489946A (en) * 2021-06-15 2021-10-08 苏州金螳螂怡和科技有限公司 Multiple monitoring type operation and maintenance system for improving operation and maintenance quality

Similar Documents

Publication Publication Date Title
CN215344861U (en) Multiple monitoring type operation and maintenance terminal
EP3771304B1 (en) Electronic control box structure and wall-mounted air conditioner
CN205985772U (en) Electric power engineering is with outdoor multi -functional electric power cabinet
CN210316705U (en) Intelligent safety tool storehouse
CN113489946A (en) Multiple monitoring type operation and maintenance system for improving operation and maintenance quality
CN215499923U (en) Network engineering early warning function equipment for data center supervision
CN215338425U (en) Electrical equipment on-line monitoring device
CN212408198U (en) Hanging structure of environmental air monitoring equipment
CN208060594U (en) A kind of anti-remote control stealing ammeter box
CN216626290U (en) Video monitoring transmission box
CN217976437U (en) Portable hydropower station fault diagnosis and maintenance device
CN110868833A (en) Intelligent monitoring safety cabinet and control system thereof
CN215931982U (en) Ammeter case that possesses dampproofing function and anti-electricity-theft device
CN220985991U (en) Cabinet door and cabinet
CN212211795U (en) Computer network information safety device
CN217784713U (en) Multi-angle large-range monitoring camera
CN219404245U (en) Portable tool storage box
CN217689216U (en) Electronic test box capable of being used for field detection
CN217689052U (en) Lightning arrester on-line monitoring device
CN221769700U (en) Selling rack for selling mechanical and electrical equipment
CN218819349U (en) Video conference display device
CN221570143U (en) Campus network operation and maintenance monitoring device
CN208781303U (en) A kind of cell multifunctional gate inhibition machine
CN213073378U (en) Integrated form security protection supervisory equipment case
CN221103441U (en) Zoom security camera

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant