CN109996402B

CN109996402B - Multimedia equipment for smart home

Info

Publication number: CN109996402B
Application number: CN201910260458.3A
Authority: CN
Inventors: 张忠杰
Original assignee: Individual
Current assignee: Wang Rui
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-11-24
Anticipated expiration: 2039-04-02
Also published as: CN109996402A

Abstract

The invention relates to a safe and reliable multimedia device for smart home, which comprises a main box body, wherein the top end of the main box body is provided with a cover plate cavity, the rear wall of the cover plate cavity is hinged with a cover plate, the bottom wall of the cover plate cavity is provided with a display cavity, a desktop plate is arranged in the display cavity in a sliding manner, the bottom wall of the display cavity is provided with a lifting cavity, a lifting mechanism is arranged in the lifting cavity, the main box body on the left side of the lifting cavity is internally provided with a slider cavity, a slider mechanism is arranged in the slider cavity, the main box body on the left side of the slider cavity is internally provided with a pressing rack groove, and a pressing rack is arranged in the pressing rack groove in a sliding manner. The heat dissipation mechanism can enable the mainframe box to dissipate heat more easily, and normal work of the mainframe is guaranteed.

Description

Multimedia equipment for smart home

Technical Field

The invention relates to the technical field of household desktops, in particular to a multimedia device which is safe and reliable and is used for smart homes.

Background

With the development of society, more and more families are provided with computers or multimedia equipment, the computer display is larger in size nowadays and occupies a space especially when being arranged in a room, the traditional multimedia equipment display is generally placed on a desktop or a special computer desk, the computer desk occupies a larger space, dust is easy to be attached to the display when the computer desk is not used, and if a computer host works for a long time, the problem that the heat dissipation is not ideal and the work of the computer is influenced can be caused;

therefore, the invention designs the safe and reliable multimedia equipment for the smart home, and solves the problems.

Disclosure of Invention

The invention aims to provide safe and reliable multimedia equipment for smart home, which can overcome the defects in the prior art and improve the indoor space utilization rate.

The invention relates to safe and reliable multimedia equipment for smart home, which comprises a main box body, wherein a cover plate cavity is formed at the top end of the main box body, a cover plate is hinged on the rear wall of the cover plate cavity, a display cavity is formed in the bottom wall of the cover plate cavity, a table top plate is arranged in the display cavity in a sliding mode, a lifting cavity is formed in the bottom wall of the display cavity, a lifting mechanism is arranged in the lifting cavity, a slider cavity is formed in the main box body on the left side of the lifting cavity, a slider mechanism is arranged in the slider cavity, a pressing rack groove is formed in the main box body on the left side of the slider cavity, a pressing rack is arranged in the pressing rack groove in a sliding mode, a transmission gear is rotationally arranged in the bottom wall of the pressing rack groove and meshed with the pressing rack, a bottom rack is meshed with the bottom of the transmission gear, and the, the left side cavity has been seted up in the main tank body in slider chamber, the left side cavity internal rotation is equipped with the screw rod that upwards extends the setting, the bottom of screw rod has set firmly and is located the screw rod awl tooth in the cavity of left side, and screw-thread fit is connected with the lifting thread piece on the outer wall of the top extension section of screw rod, lifting thread piece right side terminal surface is close to top position department and has set firmly the slip pivot, the slip pivot with recess sliding fit in the left side end of apron is connected, slider chamber right side seted up transmission wire winding gear chamber in the main tank body, transmission wire winding gear chamber right side set up bottom pulley chamber in the main tank body, bottom pulley chamber right side set up heat dissipation case sliding chamber in the main tank body, heat dissipation case sliding chamber is equipped with heat dissipation mechanism.

Beneficially, the lifting mechanism comprises a lifting cavity bottom shaft rotatably arranged in the lifting cavity, bottom shaft belt pulleys are symmetrically arranged on the outer wall of the lifting cavity bottom shaft in a left-right mode, bottom shaft middle belt pulleys are fixedly arranged on the outer wall of the lifting cavity bottom shaft between the bottom shaft belt pulleys in the left-right mode in the circumferential direction, a middle fixing block is fixedly arranged on the rear wall of the lifting cavity, a middle fixing block cavity is formed in the middle fixing block, a top belt wheel shaft extending in the left-right mode is rotatably arranged in the middle fixing block cavity, top belt wheel shaft conical teeth are fixedly arranged on the outer wall of the top belt wheel shaft in the middle fixing block cavity in the circumferential direction, top shaft belt pulleys symmetrically arranged in the left-right mode are further fixedly arranged on the outer wall of the top belt wheel shaft in the circumferential direction, the top shaft belt pulleys are connected with the bottom shaft belt pulleys through belt power, a transverse lifting plate is fixedly arranged on a belt, and vertical lifting plates symmetrically arranged in the left, the top end of the vertical lifting plate is fixedly connected with the bottom end of the desktop plate;

wherein, the top end of the table top plate is fixedly provided with support plates which are arranged symmetrically left and right, a spline sleeve cavity is arranged in the table top plate, a spline sleeve is arranged in the spline sleeve cavity in a rotating way, spline sleeve conical teeth are circumferentially and fixedly arranged on the outer wall of the spline sleeve, a spline shaft is connected in the spline sleeve in a spline fit way, the bottom end of the spline shaft extends into the middle fixed block cavity, the tail end of the spline shaft is fixedly provided with spline shaft conical teeth which are meshed with the top pulley shaft conical teeth, turning pulley cavities are arranged in the table top plate on the left side and the right side of the spline sleeve cavity, the turning pulley cavity on the right side is taken as an example for detailed description, a top rotating shaft which is arranged in a left and right extending way is rotatably arranged between the turning pulley cavity and the spline sleeve cavity, the left extending tail end of the top rotating shaft is fixedly provided with top shaft left side teeth which are arranged in the spline sleeve cavity, the terminal upset power band pulley that has set firmly in the right side of top pivot, upset power band pulley top upset band pulley intracavity rotates and is equipped with the centre gripping axle, circumference has set firmly upset driven pulleys on the outer wall of centre gripping axle, upset driven pulleys with connect through belt power between the upset power band pulley, the left side end of centre gripping axle has set firmly the grip block, but the grip block centre gripping display.

Beneficially, the slider mechanism comprises a switching slider slidably disposed in the slider cavity, a slider spring is elastically connected to the top end of the switching slider, a slider cavity is formed in the switching slider, a power motor is fixedly embedded in the top wall of the slider cavity, the bottom end of the power motor is connected with a power rotating shaft extending downwards, power shaft top teeth are fixedly arranged on the outer wall of the power rotating shaft in the circumferential direction, bottom shaft left teeth located in the slider cavity are fixedly arranged at the left end of the bottom shaft of the lifting cavity, the bottom shaft left teeth are located at the tops of the power shaft top teeth, power shaft bottom teeth are fixedly arranged at the bottom end of the power rotating shaft, a clamping groove is formed in the left end face of the switching slider, a middle gear cavity is formed in the left end wall of the slider cavity, and a driven winding gear is rotatably disposed on the rear wall of the middle gear cavity, driven wire winding gear's top meshing is equipped with driven slider gear, driven slider gear with the left side end meshing that switches the slider sets up, the bottom in slider chamber is rotated and is equipped with the bottom pivot of extending the setting about, the left side of bottom pivot is extended terminally and is stretched into in the left side cavity and its end set firmly with bottom pivot left side tooth in the screw rod awl tooth is located in circumference has set firmly on the outer wall of bottom pivot can with tooth in the bottom pivot that the meshing set up at the bottom of the power shaft, the right side of bottom pivot is extended terminally and is stretched into transmission wire winding gear intracavity and its end set firmly bottom pivot right tooth.

Beneficially, the heat dissipation mechanism comprises a transmission winding gear rotatably arranged in the transmission winding gear cavity, the front end face of the transmission winding gear is meshed with the right tooth of the bottom rotating shaft, a heat dissipation box is slidably arranged in the heat dissipation box sliding cavity, a heat dissipation cavity is formed in the heat dissipation box, a heat dissipation motor is fixedly embedded in the left end wall of the heat dissipation cavity, a fan is connected with the right end of the heat dissipation motor in a power mode, a heat dissipation net is fixedly arranged in the heat dissipation cavity, a computer can be placed on the right side of the heat dissipation net, a right threaded block is fixedly arranged at the left end of the heat dissipation box, a right threaded rod is connected with the right threaded block in a threaded fit mode, the left side section of the right threaded rod is matched with the right wall of the bottom belt wheel cavity in a rotating mode, a screw rod belt wheel is fixedly arranged at the left end of the right threaded rod, and the screw rod, a gear fixing block is fixedly arranged on the right end face of the main box body, a right winding gear is rotatably arranged at the front end of the gear fixing block, a semicircular gear is hinged at the front end of the gear fixing block, the semicircular gear is meshed with the right winding gear, a right baffle is fixedly arranged at the top end of the semicircular gear, a top pressure plate is fixedly arranged at the left end of the right winding gear, the top pressure plate is slidably arranged in an arc-shaped cavity, a right sliding plate is slidably arranged in the bottom wall of the arc-shaped cavity, a reset mechanism is fixedly arranged on the right end face of the right sliding plate, a bottom sliding plate cavity is arranged in the main box body at the bottom of the transmission winding gear cavity, a bottom sliding plate is slidably arranged in the bottom sliding plate cavity, the right end of the bottom sliding plate is connected with the bottom end of the right sliding plate in a pressing fit manner through an inclined plane, the bottom power winding gear is connected with the driven winding gear through winding power.

In conclusion, this device elevating system can make the desktop board rise and descend and make the display accomodate at the display intracavity when not using, prevents to spill dust on the display, saves space, slider mechanism can realize that the switching of power between elevating system and the heat dissipation mechanism realizes the operation that a power supply drove two mechanisms, has saved the quantity of motor, makes the design more exquisite, heat dissipation mechanism can be through the slide-out right of heat dissipation case and blow the messenger mainframe box heat dissipation more easily of the rotation of fan, guarantees the normal work of host computer, if do not put the host computer and can use as the locker, saves occupation space, and the transmission simple structure of this device is difficult for breaking down, is convenient for maintain.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a multimedia device for smart home according to the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1 according to the present invention;

fig. 3 is an enlarged structural view of B in fig. 1 according to the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-3, for the sake of convenience, the orientations described hereinafter being defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1 to 3, the multimedia device for smart home safely and reliably according to the present invention includes a main box 100, a cover plate cavity 108 is formed at a top end of the main box 100, a cover plate 107 is hinged to a rear wall of the cover plate cavity 108, a display cavity 109 is formed in a bottom wall of the cover plate cavity 108, a table top plate 115 is slidably disposed in the display cavity 109, a lifting cavity 205 is formed in a bottom wall of the display cavity 109, a lifting mechanism is disposed in the lifting cavity 205, a slider cavity 148 is formed in the main box 100 on a left side of the lifting cavity 205, a slider mechanism is disposed in the slider cavity 148, a pressing rack slot 164 is formed in the main box 100 on a left side of the slider cavity 148, a pressing rack 163 is slidably disposed in the pressing rack slot 164, a transmission gear 165 is rotatably disposed in a bottom wall of the pressing rack slot 164, and the transmission gear 165 is engaged with the pressing rack 163, a bottom rack 166 is engaged with the bottom of the transmission gear 165, a rack spring 167 is elastically connected to the left end of the bottom rack 166, a left cavity 101 is formed in the main box body 100 on the left side of the slider cavity 148, a screw 104 which extends upwards is rotatably arranged in the left cavity 101, screw conical teeth 103 which are positioned in the left cavity 101 are fixedly arranged at the bottom end of the screw 104, a lifting screw block 105 is connected to the outer wall of the top extension section of the screw 104 in a threaded fit manner, a sliding shaft pin 106 is fixedly arranged at the position, close to the top, of the end surface on the right side of the lifting screw block 105, the sliding shaft pin 106 is connected with a groove in the left end of the cover plate 107 in a sliding fit manner, a transmission winding gear cavity 144 is formed in the main box body 100 on the right side of the slider cavity 148, and a bottom pulley cavity 135 is formed in the, a heat dissipation box sliding cavity 124 is formed in the main box body 100 on the right side of the bottom pulley cavity 135, and a heat dissipation mechanism is arranged in the heat dissipation box sliding cavity 124.

Advantageously, the lifting mechanism comprises a lifting cavity bottom shaft 138 rotatably arranged in the lifting cavity 205, bottom shaft belt pulleys 142 are symmetrically arranged on the outer wall of the lifting cavity bottom shaft 138 in the left-right direction, a bottom shaft middle belt pulley 139 is fixedly arranged on the outer wall of the lifting cavity bottom shaft 138 between the bottom shaft belt pulleys 142 in the left-right direction, a middle fixing block 179 is fixedly arranged on the rear wall of the lifting cavity 205, a middle fixing block cavity 178 is formed in the middle fixing block 179, a top belt wheel shaft 176 which extends in the left-right direction is rotatably arranged in the middle fixing block cavity 178, top belt wheel shaft conical teeth 177 are fixedly arranged on the outer wall of the top belt wheel shaft 176 arranged in the middle fixing block cavity 178 in the circumferential direction, top shaft belt pulleys 141 which are symmetrically arranged in the left-right direction are further fixedly arranged on the outer wall of the top belt wheel shaft 176 in the circumferential direction, and the top shaft belt pulleys 141 and the bottom shaft belt pulleys 142, a transverse lifting plate 137 is fixedly arranged on the belt, vertical lifting plates 140 which are arranged in a bilateral symmetry mode are fixedly arranged at the top end of the transverse lifting plate 137, and the top ends of the vertical lifting plates 140 are fixedly connected with the bottom end of the table top plate 115;

wherein, the top end of the table top plate 115 is fixedly provided with support plates 113 which are arranged symmetrically left and right, a spline housing cavity 171 is arranged in the table top plate 115, a spline housing 173 is arranged in the spline housing cavity 171 in a rotating manner, spline housing conical teeth 172 are circumferentially and fixedly arranged on the outer wall of the spline housing 173, a spline shaft 174 is connected in the spline housing 173 in a spline fit manner, the bottom end of the spline shaft 174 extends into the middle fixing block cavity 178, the tail end of the spline shaft is fixedly provided with spline shaft conical teeth 175 which are engaged with the top pulley shaft conical teeth 177, turning pulley cavities 116 are arranged in the table top plate 115 on the left and right sides of the spline housing cavity 171, the turning pulley cavity 116 on the right side is taken as an example for detailed description, a top rotating shaft 118 which is arranged in a left and right extending manner is rotatably arranged between the turning pulley cavity 116 and the spline housing cavity 171, and the left extending tail end of the top rotating shaft 118 is fixedly provided with a top shaft left, the top shaft left side tooth 170 with spline housing awl tooth 172 meshes the setting, the right side end of top pivot 118 has set firmly upset power band pulley 117, upset power band pulley 117 top the upset pulley chamber 116 internal rotation is equipped with clamping shaft 112, circumference has set firmly upset driven pulley 114 on the outer wall of clamping shaft 112, upset driven pulley 114 with connect through belt power between the upset power band pulley 117, clamping shaft 112's left side end has set firmly grip block 111, but the display 110 of grip block 111 centre gripping.

Beneficially, the slider mechanism includes a switching slider 155 slidably disposed in the slider cavity 148, a slider spring 162 is elastically connected to a top end of the switching slider 155, a slider cavity 160 is disposed in the switching slider 155, a power motor 161 is fixedly embedded in a top wall of the slider cavity 160, a power rotating shaft 157 extending downward is dynamically connected to a bottom end of the power motor 161, a power shaft top tooth 156 is fixedly disposed on an outer wall of the power rotating shaft 157 in the circumferential direction, a bottom shaft left tooth 158 located in the slider cavity 160 is fixedly disposed at a left end of the bottom shaft 138 of the lifting cavity, the bottom shaft left tooth 158 is located at a top of the power shaft top tooth 156, a power shaft bottom tooth 147 is fixedly disposed at a bottom end of the power rotating shaft 157, a clamping groove 168 is disposed on a left end face of the switching slider 155, a middle gear cavity 152 is disposed on a left end wall of the slider cavity 148, rotate on the back wall in middle part gear chamber 152 and be equipped with driven wire winding gear 153, the top meshing of driven wire winding gear 153 is equipped with driven slider gear 154, driven slider gear 154 with the left side end meshing setting of switching slider 155, the bottom rotation in slider chamber 148 is equipped with the bottom pivot 146 that extends about and set up, the left side of bottom pivot 146 extends the end and stretches into in the left side cavity 101 and its end set firmly with bottom pivot left side tooth 102 in the screw rod awl tooth 103, be located 14 in circumference has set firmly can with bottom pivot middle tooth 149 that the meshing set up of power shaft bottom tooth 147 on the outer wall of bottom pivot 146, the right side of bottom pivot 146 extends the end and stretches into in the transmission wire winding gear chamber 144 and its end set firmly bottom pivot right tooth 145.

Beneficially, the heat dissipation mechanism comprises a transmission winding gear 143 rotatably disposed in the transmission winding gear cavity 144, a front end face of the transmission winding gear 143 is engaged with the bottom rotating shaft right tooth 145, a heat dissipation box 119 is slidably disposed in the heat dissipation box sliding cavity 124, a heat dissipation cavity 301 is disposed in the heat dissipation box 119, a heat dissipation motor 123 is fixedly embedded in a left end wall of the heat dissipation cavity 301, a fan 121 is connected to a right end of the heat dissipation motor 123, a heat dissipation net 120 is fixedly disposed in the heat dissipation cavity 301, a computer host can be disposed on the right side of the heat dissipation net 120, a right threaded block 133 is fixedly disposed at a left end of the heat dissipation box 119, a right threaded block 133 is connected to the right threaded block 133 in a threaded fit manner, a left section of the right threaded block 134 is rotatably matched with a right wall of the bottom pulley cavity 135, and a left end of the right threaded block 134 is fixedly provided with a threaded pulley 136, the screw belt wheel 136 is in power connection with the bottom shaft middle belt wheel 139 through a belt, a gear fixing block 126 is fixedly arranged on the right end face of the main box body 100, a right winding gear 127 is rotatably arranged at the front end of the gear fixing block 126, a semicircular gear 125 is hinged to the front end of the gear fixing block 126, the semicircular gear 125 is meshed with the right winding gear 127, a right baffle 122 is fixedly arranged at the top end of the semicircular gear 125, a top pressing plate 128 is fixedly arranged at the left end of the right winding gear 127, the top pressing plate 128 is slidably arranged in an arc-shaped cavity 129, a right sliding plate 132 is slidably arranged in the bottom wall of the arc-shaped cavity 129, a reset mechanism 130 is fixedly arranged on the right end face of the right sliding plate 132, a bottom sliding plate cavity 151 is formed in the main box body 100 at the bottom of the transmission winding gear cavity 144, and a bottom sliding plate 131 is slidably arranged in the bottom, the right side end of the bottom sliding plate 131 is connected with the bottom end of the right side sliding plate 132 in a pressing fit manner through an inclined surface, a bottom power winding gear 150 is meshed with the top end of the bottom sliding plate 131, and the bottom power winding gear 150 is connected with the driven winding gear 153 through winding power.

In the following, the applicant will refer to fig. 1 to 3 and the above description of a safe and reliable multimedia device for smart home, first, in the initial state, the switch slider 155 is in the downward state to the maximum extent, so that the bottom teeth 147 of the power shaft are engaged with the bottom teeth 149 of the bottom shaft, the bottom slide plate 131 is in the rightward state to the maximum extent, the right slide plate 132 is in the upward position to the maximum extent, the top press plate 128 is in the horizontal state, the heat dissipation box 119 is in the leftward state to the maximum extent, the right baffle 122 is in the closed state, the lateral lift plate 137 is in the downward position to the maximum extent, the table top plate 115 is in the bottom position of the display cavity 109, the cover 107 is in the closed state, and the display 110 is in the horizontal state;

in use, the apparatus is operated by first starting the power motor 161 to rotate the power shaft 157, rotating the power shaft 157 to rotate the power shaft bottom teeth 147 to rotate the bottom shaft middle teeth 149 to rotate the bottom shaft left teeth 102 to rotate the screw 104 and move the lifting screw block 105 upward to open the cover plate 107, rotating the bottom shaft middle teeth 149 to rotate the bottom shaft right teeth 145 to rotate the transmission winding gear 143 to rotate the right winding gear 127 to rotate the semi-circular gear 125 to open the right baffle 122, rotating the top press plate 128 to press the right slide plate 132 downward to move the bottom slide plate 131 leftward to rotate the bottom power winding gear 150 to rotate the driven winding gear 153 to rotate the driven slider gear 154 to move the switching slider 155 upward, at the same time, the bottom rack 166 extends into the engaging groove 168 to engage the switching slider 155, so that the top teeth 156 of the power shaft engage with the left teeth 158 of the bottom shaft, and at the same time, the power motor 161 rotates to rotate the bottom shaft 138 of the lifting chamber, which in turn rotates the bottom shaft pulley 142, which in turn rotates the top shaft pulley 141, and the transverse lifting plate 137 moves upward, which in turn moves the table top 115 upward, which in turn rotates the top shaft pulley 141, which in turn rotates the top pulley shaft 176, which in turn rotates the top pulley shaft conical teeth 177, which in turn rotates the spline shaft conical teeth 175, which in turn rotates the spline shaft 174, which in turn rotates the spline housing 173, which in turn rotates the spline housing conical teeth 172, which in turn rotates the top shaft left teeth 170, which in turn rotates the top shaft 118, which in turn rotates the reverse power pulley 117, which in turn rotates the reverse driven pulley 114, which in turn rotates the clamping shaft 112, which in turn reverses the clamping plate, the display 110 is vertical, meanwhile, the middle belt wheel 139 of the bottom shaft drives the screw rod belt wheel 136 to rotate, and further the right screw rod 134 rotates, and further the right screw thread block 133 moves rightwards, so that the heat dissipation box 119 slides out rightwards, the heat dissipation cavity 301 is meshed with the mountable host, if the host is mounted, the heat dissipation motor 123 can work, and further the fan 121 rotates to dissipate heat for the host, if the device is reset, the power motor 161 is firstly enabled to rotate reversely, after the heat dissipation box 119 and the desktop plate 115 are reset, the pressing rack 163 is manually pressed rightwards to reset the bottom rack 166, at the moment, the slider spring 162 presses the switching slider 155 downwards, so that the bottom teeth 147 of the power shaft are meshed with the middle teeth 149 of the bottom rotating shaft, and therefore the closing of the right baffle.

The beneficial effects of the invention are as follows:

the lifting mechanism can enable the desktop plate to ascend and descend so that the display can be stored in the display cavity when not used, dust is prevented from being fully sprayed on the display, and space is saved;

the slider mechanism can realize the switching of power between the lifting mechanism and the heat dissipation mechanism, realize the operation of driving the two mechanisms by one power source, save the number of motors and make the design more exquisite;

the heat dissipation mechanism can enable the main case to dissipate heat more easily by sliding the heat dissipation box rightwards and blowing air through the rotation of the fan, so that the normal work of the main machine is ensured, and if the main machine is not defended, the main machine can be used as a storage cabinet, so that the occupied space is saved;

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multimedia device for intelligent house, includes the main tank body, its characterized in that: the top end of the main box body is provided with a cover plate cavity, the rear wall of the cover plate cavity is hinged with a cover plate, the bottom wall of the cover plate cavity is provided with a display cavity, the display cavity is internally provided with a table top plate in a sliding manner, the bottom wall of the display cavity is provided with a lifting cavity, the lifting cavity is internally provided with a lifting mechanism, the main box body at the left side of the lifting cavity is internally provided with a slider cavity, the slider cavity is internally provided with a slider mechanism, the main box body at the left side of the slider cavity is internally provided with a pressing rack groove, a pressing rack is arranged in the pressing rack groove in a sliding manner, the bottom wall of the pressing rack groove is internally and rotatably provided with a transmission gear, the transmission gear is meshed with the pressing rack, the bottom of the transmission gear is meshed with a bottom rack, the left end of the bottom, a screw rod which extends upwards is arranged in the left cavity in a rotating mode, screw rod bevel teeth which are located in the left cavity are fixedly arranged at the bottom end of the screw rod, a lifting thread block is connected to the outer wall of the top extending section of the screw rod in a threaded fit mode, a sliding shaft pin is fixedly arranged at the position, close to the top, of the end face of the right side of the lifting thread block, the sliding shaft pin is connected with a groove in the left end of the cover plate in a sliding fit mode, a transmission winding gear cavity is formed in the main box body on the right side of the slider cavity, a bottom belt wheel cavity is formed in the main box body on the right side of the transmission winding gear cavity, a heat dissipation box sliding cavity is formed in the main box body on the right side; the lifting mechanism comprises a lifting cavity bottom shaft which is rotatably arranged in the lifting cavity, bottom shaft belt wheels are symmetrically arranged on the outer wall of the lifting cavity bottom shaft in a left-right mode, bottom shaft middle belt wheels are fixedly arranged on the outer wall of the lifting cavity bottom shaft between the bottom shaft belt wheels in the left-right mode in the circumferential direction, a middle fixing block is fixedly arranged on the rear wall of the lifting cavity, a middle fixing block cavity is formed in the middle fixing block, a top belt wheel shaft which extends in the left-right mode is rotatably arranged in the middle fixing block cavity, top belt wheel shaft conical teeth are fixedly arranged on the outer wall of the top belt wheel shaft in the middle fixing block cavity in the circumferential direction, top shaft belt wheels which are symmetrically arranged in the left-right mode are further fixedly arranged on the outer wall of the top belt wheel shaft in the circumferential direction, the top shaft belt wheels are connected with the bottom shaft belt wheels through belt power, a transverse lifting plate is fixedly arranged on a belt, and vertical lifting plates, the top end of the vertical lifting plate is fixedly connected with the bottom end of the desktop plate; wherein, the top end of the table top plate is fixedly provided with support plates which are arranged symmetrically left and right, a spline sleeve cavity is arranged in the table top plate, a spline sleeve is arranged in the spline sleeve cavity in a rotating way, spline sleeve conical teeth are fixedly arranged on the outer wall of the spline sleeve in the circumferential direction, a spline shaft is connected in the spline sleeve in a spline fit way, the bottom end of the spline shaft extends into the middle fixed block cavity, the tail end of the spline shaft is fixedly provided with spline shaft conical teeth which are meshed with the top belt wheel shaft conical teeth, turning belt wheel cavities are arranged in the table top plate on the left side and the right side of the spline sleeve cavity, a top rotating shaft which is arranged in a left and right extending way is arranged between the turning belt wheel cavities and the spline sleeve cavity in a rotating way, the left extending tail end of the top rotating shaft is fixedly provided with top shaft left side teeth which are arranged in the spline sleeve conical teeth in a meshing way, and the, a clamping shaft is rotatably arranged in the overturning belt wheel cavity at the top of the overturning power belt wheel, an overturning driven belt wheel is fixedly arranged on the outer wall of the clamping shaft in the circumferential direction, the overturning driven belt wheel is in power connection with the overturning power belt wheel through a belt, a clamping plate is fixedly arranged at the tail end of the left side of the clamping shaft, and the clamping plate clamps a display; the slider mechanism comprises a switching slider arranged in the slider cavity in a sliding manner, the top end of the switching slider is elastically connected with a slider spring, a slider cavity is formed in the switching slider, a power motor is fixedly embedded in the top wall of the slider cavity, the bottom end of the power motor is connected with a power rotating shaft which extends downwards, power shaft top teeth are fixedly arranged on the outer wall of the power rotating shaft in the circumferential direction, bottom shaft left teeth positioned in the slider cavity are fixedly arranged at the left end of a bottom shaft of the lifting cavity, the bottom shaft left teeth are positioned at the tops of the power shaft top teeth, power shaft bottom teeth are fixedly arranged at the bottom end of the power rotating shaft, a clamping groove is formed in the left end face of the switching slider, a middle gear cavity is formed in the left end wall of the slider cavity, a driven winding gear is rotatably arranged on the rear wall of the middle gear cavity, and a driven slider gear is meshed with the top of the driven winding gear, the driven slider gear is meshed with the left side end of the switching slider, a bottom rotating shaft which extends leftwards and rightwards is rotatably arranged at the bottom of the slider cavity, the left extending tail end of the bottom rotating shaft extends into the left cavity, the tail end of the bottom rotating shaft is fixedly provided with a bottom rotating shaft left tooth which is arranged in the screw taper tooth, the outer wall of the bottom rotating shaft is circumferentially and fixedly provided with a bottom rotating shaft middle tooth which can be meshed with the power shaft bottom tooth, the right extending tail end of the bottom rotating shaft extends into the transmission winding gear cavity, and the tail end of the bottom rotating shaft is fixedly provided with a bottom rotating shaft right tooth; the heat dissipation mechanism comprises a transmission winding gear rotationally arranged in a transmission winding gear cavity, the front end face of the transmission winding gear is meshed with the right tooth of the bottom rotating shaft, a heat dissipation box is arranged in a sliding cavity of the heat dissipation box in a sliding manner, a heat dissipation cavity is formed in the heat dissipation box, a heat dissipation motor is fixedly embedded in the left end wall of the heat dissipation cavity, the right end of the heat dissipation motor is in power connection with a fan, a heat dissipation net is fixedly arranged in the heat dissipation cavity, a computer host can be placed on the right side of the heat dissipation net, a right threaded block is fixedly arranged at the left end of the heat dissipation box, a right threaded rod is connected in threaded fit with the right threaded block in a matching manner, the left side section of the right threaded rod is in rotational fit with the right wall of the bottom pulley cavity, a screw rod belt wheel is fixedly arranged at the left end of the right threaded rod, a gear fixing block is fixedly arranged on the right end face of the main box body, a right winding gear is rotatably arranged at the front end of the gear fixing block, a semicircular gear is hinged at the front end of the gear fixing block, the semicircular gear is meshed with the right winding gear, a right baffle is fixedly arranged at the top end of the semicircular gear, a top pressure plate is fixedly arranged at the left end of the right winding gear, the top pressure plate is slidably arranged in an arc-shaped cavity, a right sliding plate is slidably arranged in the bottom wall of the arc-shaped cavity, a reset mechanism is fixedly arranged on the right end face of the right sliding plate, a bottom sliding plate cavity is arranged in the main box body at the bottom of the transmission winding gear cavity, a bottom sliding plate is slidably arranged in the bottom sliding plate cavity, the right end of the bottom sliding plate is connected with the bottom end of the right sliding plate in a pressing fit manner through an inclined plane, the bottom power winding gear is connected with the driven winding gear through winding power.