阅读说明：本技术 一种地理信息勘测的计算机维护装置 (Geographic information surveys computer maintenance device ) 是由 顾成林 李贝 姜静 魏虹旭 于 2021-07-30 设计创作，主要内容包括：一种地理信息勘测的计算机维护装置,包括壳体装置、卷料装置,壳体装置包括外壳、摆动轴、一号齿轮、刀座、排气扇、无纺布、下滚轮、上滚轮、连杆,卷料装置包括机架、双联齿轮、凸轮、滑块、齿条、连接杆、二号锥齿轮,所述卷料装置固定连接壳体装置底部；所述外壳两侧各具有一个排气扇孔,外壳上部内侧具有计算机座,外壳底部右侧具有前后对称的两个无纺布架,无纺布架上部具有同轴的无纺布轴孔,无纺布架左侧具有进气孔,进气孔两侧各具有一个卡板,进气孔左侧具有前后对称的两个滚轮架,滚轮架上部具有上下两个滚轮轴孔,滚轮架左侧具有连接两个滚轮架的右托板。(A computer maintenance device for geographic information exploration comprises a shell device and a rolling device, wherein the shell device comprises a shell, a swing shaft, a first gear, a cutter holder, an exhaust fan, non-woven fabrics, a lower roller, an upper roller and a connecting rod, the rolling device comprises a rack, a duplicate gear, a cam, a sliding block, a rack, a connecting rod and a second bevel gear, and the rolling device is fixedly connected with the bottom of the shell device; the utility model discloses a roller, including shell, air inlet, air outlet, the shell both sides respectively have an exhaust fan hole, shell upper portion inboard has the computer frame, shell bottom right side has two non-woven fabrics framves of longitudinal symmetry, non-woven fabrics frame upper portion has coaxial non-woven fabrics shaft hole, non-woven fabrics frame left side has the inlet port, the inlet port both sides respectively have a cardboard, the inlet port left side has two gyro wheel framves of longitudinal symmetry, gyro wheel frame upper portion has two upper and lower gyro wheel shaft holes, the gyro wheel frame left side has the right layer board of connecting two gyro wheel framves.)

1. A computer maintenance device for geographic information exploration is characterized by comprising a shell device and a rolling device, wherein the shell device comprises a shell, a swing shaft, a first gear, a cutter holder, an exhaust fan, non-woven fabrics, a lower roller, an upper roller and a connecting rod, the rolling device comprises a rack, a duplicate gear, a cam, a sliding block, a rack, a connecting rod and a second bevel gear, and the rolling device is fixedly connected with the bottom of the shell device; the two sides of the shell are respectively provided with an exhaust fan hole, the inner side of the upper part of the shell is provided with a computer base, the right side of the bottom of the shell is provided with two non-woven fabric frames which are symmetrical front and back, the upper part of each non-woven fabric frame is provided with a coaxial non-woven fabric shaft hole, the left side of each non-woven fabric frame is provided with an air inlet, the two sides of each air inlet are respectively provided with a clamping plate, the left side of each air inlet is provided with two roller frames which are symmetrical front and back, the upper part of each roller frame is provided with an upper roller shaft hole and a lower roller shaft hole, the left side of each roller frame is provided with a right supporting plate which is connected with the two roller frames, the left side of each roller frame is provided with two guide rods which are symmetrical front and back, the left side of the shell is provided with a discharge hole, the discharge hole and the left supporting plate are arranged between the two guide rods, one side of the swing shaft is provided with two pin shafts which are symmetrically arranged, the lower part of the cutter holder is provided with a blade, and one side of the upper roller is provided with a threaded hole, the lower idler wheel middle shaft is rotatably connected with two idler wheel shaft holes at the lower part, the lower idler wheel rotates in the two idler wheel shaft holes at the lower part, the upper idler wheel is rotatably connected with two idler wheel shaft holes at the upper part, the upper idler wheel rotates in the two idler wheel shaft holes at the upper part, a threaded hole is connected with the inner part of the bolt, a first bevel gear is slidably connected with the rear part of the upper idler wheel middle shaft, a second spring is sleeved outside the upper idler wheel middle shaft, the front side of the second spring props against the end surface of the upper idler wheel middle shaft, the rear side of the second spring props against the end surface of the first bevel gear, a swing shaft is rotatably connected with the swing shaft holes, the swing shaft rotates in the swing shaft hole, a first gear is fixedly connected with the rear side of the swing shaft, guide holes at two sides of the tool apron are respectively slidably connected with guide rods at two sides, the upper parts of the guide rods at two sides are respectively slidably connected with two tool apron, two blades are symmetrically arranged, each pin shaft is respectively hinged with one side of a connecting rod, the other side of each connecting rod is respectively hinged with a tool apron pin shaft of the upper tool apron and the lower tool apron, the non-woven fabrics jackshaft both sides rotate the non-woven fabrics shaft hole of connecting both sides respectively, and the cardboard of both sides is passed on the non-woven fabrics left side, then passes in the middle of two lower gyro wheels again, passes two upper and lower blades again along right layer board, wears out from left discharge gate along left layer board again, exhaust fan of every exhaust fan hole fixed connection.

2. The computer maintenance device for geographic information exploration according to claim 1, wherein two sides of said frame are respectively provided with a side plate, the upper parts of the two side plates are provided with a plurality of coaxial shaft holes, the rear part of the right side of the frame is provided with a motor base, the left side of the front part of the frame is provided with a first sliding chute, the right side of the first sliding chute is provided with a second sliding chute in the vertical direction, the right side of the dual gear is provided with a right gear, the left side of the dual gear is provided with a left gear, the middle of the frame is provided with a gear hole, each shaft is rotatably connected with a shaft inside each shaft hole, each shaft rotates in the respective shaft hole, the right side of each shaft is fixedly connected with a dual gear, the upper part of the motor base is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a motor gear, the motor gear is mutually meshed with the right gear on the last side, and the left gear on the back side is mutually meshed with the right gear on the front side in turn.

3. The computer maintenance device for geographic information survey according to claim 2, wherein the cam has a cam hole in the middle, the right end face of the cam has a cam groove, the cam groove is divided into a short-range section and a long-range section, the left end face of the cam has a cam surface, the cam groove and the cam surface are located on the two side end faces of the cam, the short-range section and the cam surface are respectively located on the left side and the right side of the cam, the upper part of the slider has a square hole, the lower part of the rack has a slider, one side end face of the rack has a cam block, one side of the connecting rod has a square shaft, the other side of the connecting rod has a cross rod, the outer side of the cross rod has a cam rod, the right side of the second bevel gear has a second gear, the second bevel gear has a second bevel gear hole in the middle, the slider is slidably connected with the first slide groove, the rack slides in the first slide groove, the rack and the first gear are mutually engaged, the first spring is placed in the first slide groove, the left side of the rack is supported on the right side of the first spring, the left side of the first sliding groove is fixedly connected with the left side of the first spring, the sliding block is connected with the second sliding groove in a sliding mode, the sliding block slides in the second sliding groove, a square shaft is fixedly connected with a square hole, a second bevel gear hole is rotatably connected with a connecting rod, a second bevel gear is meshed with a first bevel gear, the third gear is fixedly connected with the left side of the foremost shaft, a third gear is meshed with a second gear, a cam hole is fixedly connected with the left side of the foremost shaft, a cam is arranged on the left side of the third gear, a cam groove is connected with a cam rod in a sliding mode, and a cam block is connected with a cam surface or a cam surface position end face.

4. The computer maintenance apparatus for geographic information survey of claim 2, comprising the steps of: firstly, winding non-woven fabrics on a non-woven fabric intermediate shaft, wherein the non-woven fabrics penetrate through clamping plates on two sides towards the left side, then penetrate through the middle of two lower rollers, penetrate through an upper blade and a lower blade along a right supporting plate again, and penetrate out of a discharge hole on the left side along a left supporting plate; secondly, placing the computer on the upper part of the computer base; and thirdly, starting the motor and starting the exhaust fans at the two sides to work simultaneously.

Technical Field

The invention relates to the field of computers, in particular to a computer maintenance device for geographic information survey.

Background

In the geographic information reconnaissance process, need carry the computer and carry out the outdoor operations, the outdoor operations environment is abominable, and the dust is big, still can work under high temperature environment sometimes, and high temperature and dust can cause very big devastation to the computer, need a device to solve the problem of ventilation and wind-dust.

Disclosure of Invention

The invention provides a dustproof and ventilated computer maintenance device for geographic information survey, which aims at overcoming the defects in the prior art.

The purpose of the invention is realized by the following technical scheme:

a computer maintenance device for geographic information exploration comprises a shell device and a rolling device, wherein the shell device comprises a shell, a swing shaft, a first gear, a cutter holder, an exhaust fan, non-woven fabrics, a lower roller, an upper roller and a connecting rod, the rolling device comprises a rack, a duplicate gear, a cam, a sliding block, a rack, a connecting rod and a second bevel gear, and the rolling device is fixedly connected with the bottom of the shell device; the two sides of the shell are respectively provided with an exhaust fan hole, the inner side of the upper part of the shell is provided with a computer base, the right side of the bottom of the shell is provided with two non-woven fabric frames which are symmetrical front and back, the upper part of each non-woven fabric frame is provided with a coaxial non-woven fabric shaft hole, the left side of each non-woven fabric frame is provided with an air inlet, the two sides of each air inlet are respectively provided with a clamping plate, the left side of each air inlet is provided with two roller frames which are symmetrical front and back, the upper part of each roller frame is provided with an upper roller shaft hole and a lower roller shaft hole, the left side of each roller frame is provided with a right supporting plate which is connected with the two roller frames, the left side of each roller frame is provided with two guide rods which are symmetrical front and back, the left side of the shell is provided with a discharge hole, the discharge hole and the left supporting plate are arranged between the two guide rods, one side of the swing shaft is provided with two pin shafts which are symmetrically arranged, the lower part of the cutter holder is provided with a blade, and one side of the upper roller is provided with a threaded hole, the lower idler wheel middle shaft is rotatably connected with two idler wheel shaft holes at the lower part, the lower idler wheel rotates in the two idler wheel shaft holes at the lower part, the upper idler wheel is rotatably connected with two idler wheel shaft holes at the upper part, the upper idler wheel rotates in the two idler wheel shaft holes at the upper part, a threaded hole is connected with the inner part of the bolt, a first bevel gear is slidably connected with the rear part of the upper idler wheel middle shaft, a second spring is sleeved outside the upper idler wheel middle shaft, the front side of the second spring props against the end surface of the upper idler wheel middle shaft, the rear side of the second spring props against the end surface of the first bevel gear, a swing shaft is rotatably connected with the swing shaft holes, the swing shaft rotates in the swing shaft hole, a first gear is fixedly connected with the rear side of the swing shaft, guide holes at two sides of the tool apron are respectively slidably connected with guide rods at two sides, the non-woven fabrics jackshaft both sides rotate the non-woven fabrics shaft hole of connecting both sides respectively, and the cardboard of both sides is passed on the non-woven fabrics left side, then passes in the middle of two lower gyro wheels again, passes two upper and lower blades again along right layer board, wears out from left discharge gate along left layer board again, exhaust fan of every exhaust fan hole fixed connection.

The frame both sides respectively have a curb plate, two curb plate upper portions have a plurality of shaft holes of coaxial line, frame right side rear portion has the motor cabinet, the anterior left side of frame has a spout, spout right side vertical direction has the spout No. two, the duplicate gear right side has the right gear, the duplicate gear left side has the left gear, the gear hole has in the middle of the frame, an axle is connected in the inside rotation in every shaft hole, every axle rotates in shaft hole separately, duplicate gear of every axle right side fixed connection, motor cabinet upper portion fixed connection motor, motor output shaft fixed connection motor gear, motor gear and last side right gear intermeshing, the rear side left gear in proper order with the right gear intermeshing of front side.

The cam is provided with a cam hole in the middle, the end face of the right side of the cam is provided with a cam groove, the cam groove is divided into a short range section and a long range section, the end face of the left side of the cam is provided with a cam surface, the cam groove and the cam surface are positioned on the end faces of the two sides of the cam, the short range section and the cam surface are respectively positioned on the left side and the right side of the cam, the upper part of the slider is provided with a square hole, the lower part of the rack is provided with a slider, the end face of one side of the rack is provided with a cam block, one side of a connecting rod is provided with a square shaft, the other side of the connecting rod is provided with a cross rod, the outer side of the cross rod is provided with a cam rod, the right side of a second bevel gear is provided with a second bevel gear hole, the slider is in sliding connection with a first sliding groove, the rack slides in the first sliding groove, the rack is meshed with the first gear, a first spring is placed in the first sliding groove, the right side of the first spring is abutted against the left side of the rack, the left side of the first sliding connection with the second sliding groove, the sliding block slides in the second sliding groove, the square shaft is fixedly connected with the square hole, the second bevel gear hole is rotatably connected with the connecting rod, the second bevel gear is meshed with the first bevel gear, the third gear is fixedly connected with the left side of the foremost shaft and is meshed with the second gear, the cam hole is fixedly connected with the left side of the foremost shaft, the cam is arranged on the left side of the third gear, the cam groove is in sliding connection with the cam rod, and the cam block is in sliding connection with the cam surface or the end surface where the cam surface is located.

Has the advantages that: when the invention is used, the motor is started to simultaneously start the exhaust fans at two sides, the motor drives the motor gear to rotate, the motor gear rotates to drive the right gear at the last side to rotate, the left gear at the last side drives the right gear at the adjacent front side to rotate, the right gear at the foremost side sequentially drives the right gear at the foremost side to rotate, the shaft at the foremost side rotates to drive the third gear and the cam to rotate, when the cam rod is in long-range sliding connection, the second gear and the third gear are disengaged, the cam block is in sliding connection with the end surface of the cam surface under the action of the first spring, when the cam rod slides from short range to long range, the slide block slides to the rear side along with the connecting rod, the second gear and the third gear are engaged with each other, the third gear drives the second gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the upper roller to rotate, the upper roller drives the lower roller and the non-woven fabric in the middle of the upper roller to move to the left side, when the cam rod slides to a short range from a long range, the sliding block slides to the front side along the connecting rod, the second gear and the third gear are disengaged, the second gear does not rotate any more, the non-woven fabric is moved forward for a certain distance and passes through the middle of the two blades and is sent out from the discharge port along the left supporting plate, when the cam rotates for a certain angle along the shaft, the cam block slides to be connected with one side of the cam surface under the action of the first spring, the rack is pushed to slide to the left side, the rack slides to the left side to drive the first gear to rotate, the first gear rotates to drive the swinging shaft to rotate, the swinging shaft rotates to drive the upper tool apron to slide downwards along the guide rod through the upper connecting rod, the swinging shaft rotates to drive the lower tool apron to slide upwards along the guide rod through the lower connecting rod, the two tool aprons simultaneously move towards the center, the blades on the two sides cut the non-woven fabric, and then the cam block slides to the highest point, then the cam block slides along the other side of the cam surface, the first spring pushes the rack to the right side, the first gear drives the swing shaft to reversely rotate, the cutter holders on the upper side and the lower side are simultaneously driven to be separated, the motor gear continues to rotate until the cam rod slides to a long distance from a short distance again, next circulation is started, when the exhaust fan rotates, airflow flows into the shell from the air inlet and the non-woven fabric, the airflow is exhausted from the exhaust fans on the two sides, the inflow air is filtered by the non-woven fabric, the air is exhausted from the exhaust fan and takes away heat, the computer cannot be overheated and polluted by dust, the computer is effectively protected, the non-woven fabric can be blocked by the dust after being used for a period of time, the filtering effect is lost, the air entering is influenced, the polluted non-woven fabric can be moved to the left side and cut off, and new non-woven fabric is put into work.

The invention can play the roles of dust prevention and ventilation, and automatically puts in non-woven fabrics according to the working time, so that the invention keeps good dust prevention and ventilation all the time, effectively plays a good role in maintaining a computer, airflow flows into a shell from an air inlet and the non-woven fabrics, then is exhausted from exhaust fans at two sides, the inflowing air is filtered by the non-woven fabrics, the air is exhausted from the exhaust fans and takes away heat, so that the computer is not overheated, the computer is effectively protected, the non-woven fabrics can be blocked by dust after being used for a period of time, the filtering effect is lost, the air is influenced, the polluted non-woven fabrics are moved and cut towards the left side, new non-woven fabrics are put into work, a right gear and a left gear have higher transmission ratio, a multistage duplex gear is used in series, the whole transmission ratio is higher, so that the non-woven fabrics are removed after the service life cycle is finished, and the multistage duplex gear is used in series to achieve the transmission effect, and play the time delay effect, guaranteed that the non-woven fabrics plays good ventilation and filtering action all the time, the cam both sides have cam groove and cam surface respectively, the cam groove plays and removes the non-woven fabrics effect, the cam surface plays the excision non-woven fabrics effect, No. two springs not only keep a bevel gear and No. two bevel gear intermeshing, and the transmission of moment when keeping a bevel gear and No. two bevel gear intermeshing, slider and No. two spouts, a spout and slider adopt rectangle sliding connection, not only guarantee gliding steady, and can guarantee the position accuracy of rack and a gear, it is steady to keep a gear to rotate, guarantee the mutual position accuracy of No. two gears and No. three gears, guarantee No. two gears and No. three gear revolve's steady.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a computer maintenance device for surveying geographic information according to the present invention.

Fig. 2 is a schematic cross-sectional structural view of the housing device according to the present invention.

Fig. 3 is a schematic view of the left side structure of the material rolling device according to the present invention.

Fig. 4 is a schematic diagram of the right side structure of the material rolling device according to the present invention.

Fig. 5 is a schematic view of the structure of the housing according to the present invention.

Fig. 6 is a schematic view of the structure of the swing shaft according to the present invention.

FIG. 7 is a schematic view of a tool holder according to the present invention.

Fig. 8 is a schematic view of the upper roller structure according to the present invention.

Fig. 9 is a schematic view of a rack structure according to the present invention.

Fig. 10 is a schematic view of a dual gear structure according to the present invention.

Fig. 11 is a schematic view of the cam structure according to the present invention.

Fig. 12 is a rear side view of the cam according to the present invention.

Fig. 13 is a schematic view of a slider structure according to the present invention.

Fig. 14 is a schematic view of a rack structure according to the present invention.

Fig. 15 is a schematic view of a connecting rod structure according to the present invention.

Fig. 16 is a schematic structural view of a second bevel gear according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

a computer maintenance device for geographic information survey comprises a shell device 100 and a rolling device 200, wherein the shell device 100 comprises a shell 110, a swing shaft 130, a first gear 135, a cutter holder 140, an exhaust fan 150, non-woven fabrics 160, a lower roller 170, an upper roller 171 and a connecting rod 180, the rolling device 200 comprises a rack 210, a duplicate gear 220, a cam 230, a sliding block 240, a rack 250, a connecting rod 260 and a second bevel gear 270, and the rolling device 200 is fixedly connected with the bottom of the shell device 100; the two sides of the shell 110 are respectively provided with an exhaust fan hole 111, the inner side of the upper part of the shell 110 is provided with a computer base 112, the right side of the bottom of the shell 110 is provided with two non-woven fabric frames 113 which are symmetrical front and back, the upper part of the non-woven fabric frames 113 is provided with a coaxial non-woven fabric shaft hole 114, the left side of the non-woven fabric frames 113 is provided with an air inlet hole 115, the two sides of the air inlet hole 115 are respectively provided with a clamping plate 116, the left side of the air inlet hole 115 is provided with two roller frames 117 which are symmetrical front and back, the upper part of the roller frame 117 is provided with an upper roller shaft hole 118 and a lower roller shaft hole 118, the left side of the roller frame 117 is provided with a right supporting plate 119 connected with the two roller frames 117, the left side of the roller frame 117 is provided with two guide rods 120 which are symmetrical front and back, the left side of the shell 110 is provided with a discharge hole 121, the lower part of the discharge hole 122 is provided with a left supporting plate 122, the discharge hole 121 and the left supporting plate 122 are arranged between the two guide rods 131 which are symmetrical, one side of the swing shaft 130, a tool apron pin 142 is arranged on one side of the tool apron 140, a blade 143 is arranged on the lower portion of the tool apron 140, a threaded hole 172 is arranged on one side of an upper roller 171, a lower roller intermediate shaft is rotatably connected with the two lower roller shaft holes 118, the lower roller 170 rotates in the two lower roller shaft holes 118, the upper roller 171 is rotatably connected with the two upper roller shaft holes 118, the upper roller 171 rotates in the two upper roller shaft holes 118, a threaded hole 172 is connected with the inner part of a bolt 173, a first bevel gear 175 is slidably connected with the rear part of the upper roller intermediate shaft, a second spring 174 is sleeved outside the upper roller intermediate shaft, the front side of the second spring 174 abuts against the end surface of the upper roller intermediate shaft, the rear side of the second spring 174 abuts against the end surface of the first bevel gear 175, a swinging shaft 130 is rotatably connected with the swinging shaft hole 124, the swinging shaft 130 rotates in the swinging shaft 124, the rear side of the swinging shaft 130 is fixedly connected with the first gear 135, guide holes 141 on two sides of the tool apron 140 are respectively slidably connected with guide rods 120 on two sides, the upper parts of the two side guide rods 120 are respectively connected with the upper tool apron 140 and the lower tool apron 140 in a sliding manner, the two blades 143 are symmetrically arranged, each pin shaft 131 is respectively hinged with one side of a connecting rod 180, the other side of each connecting rod 180 is respectively hinged with the tool apron pin shafts 142 of the upper tool apron 140 and the lower tool apron 140, two sides of the non-woven fabric intermediate shaft are respectively connected with the non-woven fabric shaft holes 114 on two sides in a rotating manner, the left side of the non-woven fabric 160 penetrates through the clamping plates 116 on two sides, then penetrates through the middle of the two lower rollers 170, penetrates through the upper and lower blades 143 again along the right supporting plate 119, penetrates out of the discharge hole 121 on the left side along the left supporting plate 122, and is fixedly connected with an exhaust fan 150 through each exhaust fan hole 111.

The two sides of the rack 210 are respectively provided with a side plate 211, the upper parts of the two side plates 211 are provided with a plurality of coaxial shaft holes 212, the rear part of the right side of the rack 210 is provided with a motor base 213, the left side of the front part of the rack 210 is provided with a first sliding groove 214, the right side of the first sliding groove 214 is provided with a second sliding groove 215 in the vertical direction, the right side of the duplicate gear 220 is provided with a right gear 221, the left side of the duplicate gear 220 is provided with a left gear 222, the middle of the rack 210 is provided with a gear hole 223, each shaft hole 212 is rotatably connected with a shaft 280, each shaft 280 rotates in the respective shaft hole 212, the right side of each shaft 280 is fixedly connected with a duplicate gear 220, the upper part of the motor base 213 is fixedly connected with a motor 290, the output shaft of the motor 290 is fixedly connected with a motor gear 295, the motor gear 295 is mutually engaged with the right gear 221 at the last side, and the left gear 222 at the back side is mutually engaged with the right gear 221 at the front side in turn.

The cam 230 has a cam hole 231 in the middle, the cam 230 has a cam groove 232 on the right end surface, the cam groove 232 is divided into a proximal portion 2321 and a distal portion 2322, the cam 230 has a cam surface 233 on the left end surface, the cam groove 232 and the cam surface 233 are located on the two side surfaces of the cam 230, the proximal portion 2321 and the cam surface 233 are located on the left and right sides of the cam 230, respectively, the slider 240 has a square hole 241 on the upper portion, the rack 250 has a slider 251 on the lower portion, the rack 250 has a cam block 252 on one side surface, the connecting rod 260 has a square shaft 261 on one side, the connecting rod 260 has a crossbar 262 on the other side, the crossbar 262 has a cam rod 263 on the outer side, the second bevel gear 270 has a second gear 271 on the right side, the second bevel gear 270 has a second bevel gear hole 272 in the middle, the slider 251 is slidably connected with the first sliding groove 214, the rack 250 slides in the first sliding groove 214, the rack 250 and the first gear 135 are engaged with each other, the first spring 255 is placed in the first sliding groove 214, the right side of a first spring 255 is abutted against the left side of the rack 250, the left side of the first spring 255 is fixedly connected with the left side of a first sliding groove 214, a sliding block 240 is slidably connected with a second sliding groove 215, the sliding block 240 slides in the second sliding groove 215, a square shaft 261 is fixedly connected with a square hole 241, a second bevel gear hole 272 is rotatably connected with a connecting rod 260, a second bevel gear 270 is meshed with a first bevel gear 175, a third gear 285 is fixedly connected with the left side of a foremost shaft 280, a third gear 285 is meshed with a second gear 271, a cam hole 231 is fixedly connected with the left side of the foremost shaft 280, a cam 230 is arranged on the left side of the third gear 285, a cam groove 232 is slidably connected with a cam rod 263, and a cam block 252 is slidably connected with a cam surface 233 or an end surface where the cam surface is located.

When the invention is used, the motor 290 is started to simultaneously start the exhaust fans 150 on two sides, the motor 290 drives the motor gear 295 to rotate, the motor gear 295 rotates to drive the right gear 221 on the last side to rotate, the left gear 222 on the last side drives the right gear 221 on the adjacent front side to rotate, the right gear 221 on the foremost side sequentially transmits to the right gear 221 on the foremost side, the right gear 221 on the foremost side rotates to drive the shaft 280 on the foremost side to rotate, the shaft 280 on the foremost side rotates to drive the gear 285 on the third side and the cam 230 to rotate, when the cam rod 263 and the remote 2322 are connected in a sliding way, the gear 271 on the second side and the gear 285 on the third side are disengaged, the cam block 252 is connected in a sliding way with the end face made by the cam surface 233 under the action of the spring 255 on the first side, when the cam rod 263 slides from the short range 2321 to the remote range 2322, the slider 240 slides along with the connecting rod 260 on the rear side, the gear 271 and the gear 285 are engaged with each other, the gear 285 drives the gear 271 on the second side to rotate, the bevel gear 271 on the second bevel gear 270, the first bevel gear 175 drives the upper roller 171 to rotate, the upper roller 171 rotates to drive the lower roller 170 and the non-woven fabric 160 in the middle of the upper roller 171 to move to the left, when the cam rod 263 slides from the long range 2322 to the short range 2321, the sliding block 240 slides along the connecting rod 260 to the front side, the second gear 271 is disengaged from the third gear 285, the second gear 271 does not rotate any more, at this time, the non-woven fabric 160 moves forward a certain distance and passes through the middle of the two blades 143 and is sent out from the discharge port 121 along the left supporting plate 122, after the cam 230 rotates a certain angle along with the shaft 280, the cam block 252 slides along the cam surface 233 side under the action of the first spring 255, the rack 250 is pushed to slide to the left side, the rack 250 slides to the left side to drive the first gear 135 to rotate, the first gear 135 rotates to drive the swing shaft 130 to rotate, the swing shaft 130 drives the upper tool apron 140 to slide down along the guide rod 120 through the upper connecting rod 180, the swing shaft 130 rotates to drive the tool holders 140 at the lower part to slide upwards along the guide rod 120 through the connecting rod 180 at the lower part, the two tool holders 140 move towards the center at the same time, the blades 143 at the two sides cut the non-woven fabric 160, after the non-woven fabric 160 is cut, the cam block 252 slides over the highest point of the cam surface 233, then the cam block 252 slides along the other side of the cam surface 233, the first spring 255 pushes the rack 250 towards the right side, the first gear 135 drives the swing shaft 130 to rotate reversely, the tool holders 140 at the upper and lower sides are driven to be separated from each other at the same time, the motor gear 295 continues to rotate until the cam rod 263 slides from the short range 2321 to the long range 2322 again, the next cycle begins, when the exhaust fan 150 rotates, air flows into the shell 110 from the air inlet 115 and the non-woven fabric 160 and is exhausted from the exhaust fans 150 at the two sides, the inflowing air is filtered by the non-woven fabric 160, and the air is exhausted from the exhaust fans 150 to take away heat, make the computer can not be overheated and by dust pollution, the effectual computer that has protected, non-woven fabrics 160 can be died by the dust after using a period, loses the filter effect, has influenced the entering of air, contaminated non-woven fabrics 160 can be moved and amputate to the left side, and new non-woven fabrics 160 is put into operation.

The invention can play the role of dust prevention and ventilation, and automatically puts in the non-woven fabric 160 according to the working time, so that the invention keeps good dust prevention and ventilation all the time, and effectively plays a good role in maintaining the computer, the airflow flows into the shell 110 from the air inlet 115 and the non-woven fabric 160 and is exhausted from the exhaust fans 150 at both sides, the inflowing air is filtered by the non-woven fabric 160, the air is exhausted from the exhaust fans 150 and takes away heat, so that the computer is not overheated, the computer is effectively protected, the non-woven fabric 160 can be blocked by dust after being used for a period of time, the filtering function is lost, the air entering is influenced, the polluted non-woven fabric 160 is moved to the left side and cut off, new non-woven fabric 160 is put into operation, the right gear 221 and the left gear 222 have higher transmission ratio, the multistage duplex gear 220 is used in series, the whole transmission ratio is higher, and the non-woven fabric 160 is removed after the service life cycle is over, the multi-stage dual gear 220 is used in series, which not only achieves the transmission function, but also plays a role in delaying time, so as to ensure that the non-woven fabric 160 plays a good role in ventilation and filtration all the time, the cam 230 is respectively provided with a cam groove 232 and a cam surface 233 on both sides, the cam groove 232 plays a role in moving the non-woven fabric 160, the cam surface 233 plays a role in cutting off the non-woven fabric 160, the second spring 174 not only keeps the first bevel gear 175 and the second bevel gear 270 meshed with each other, and the transmission of moment is kept when the first bevel gear 175 and the second bevel gear 270 are engaged with each other, the sliding block 240 and the second sliding groove 215, and the first sliding groove 214 and the sliding block 251 are connected in a rectangular sliding manner, so that the stability of sliding is ensured, and the position accuracy of the rack 250 and the first gear 135 can be ensured, the first gear 135 can be kept to rotate stably, the mutual position accuracy of the second gear 271 and the third gear 285 can be ensured, and the rotation stability of the second gear 271 and the third gear 285 can be ensured.

A method of operating a computer maintenance device for geographic information surveying, comprising the steps of: firstly, the non-woven fabric 160 is wound on the non-woven fabric intermediate shaft, the non-woven fabric 160 passes through the clamping plates 116 on the two sides towards the left side, then passes through the middle of the two lower rollers 170, passes through the upper blade 143 and the lower blade 143 again along the right supporting plate 119, and then passes out of the discharge port 121 on the left side along the left supporting plate 122. Second, the computer is placed on top of the computer base 112. And thirdly, the motor 290 is started to start the exhaust fans 150 at both sides simultaneously to start working.