CN112810411A

CN112810411A - Engineering vehicle cab with sun-shading and heat-insulating device

Info

Publication number: CN112810411A
Application number: CN202110099343.8A
Authority: CN
Inventors: 韩喜然
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-05-18

Abstract

The invention discloses an engineering vehicle cockpit with a sun-shading and heat-insulating device. This cockpit includes the automobile body, windshield, the montant, the horizontal pole, the connecting block, locking mechanical system, sunshade mechanism and heat dissipation mechanism part, two montants are located the windshield both sides respectively, two equal fixed connection automobile bodies of montant one end, two connecting blocks of automobile body one end difference fixed connection are kept away from to two montants, the horizontal pole both ends are rotated and are connected two connecting blocks, the equal fixed connection automobile body of two connecting blocks, locking mechanical system one end fixed connection automobile body, locking mechanical system keeps away from automobile body one end and connects the connecting block, sunshade mechanism one end fixed connection horizontal pole, heat dissipation mechanism fixed connection sunshade mechanism one side. The locking mechanism is arranged to automatically unfold the sun-shading mechanism to shade and cool the windshield when the temperature of the carriage reaches a certain temperature, and the temperature difference between the inner side and the outer side of the sun-shading mechanism is used as power to cooperate with the heat dissipation mechanism to cool the inner part of the carriage.

Description

Engineering vehicle cab with sun-shading and heat-insulating device

Technical Field

The invention relates to the technical field of automobile-related equipment, in particular to an engineering vehicle cockpit with a sun-shading and heat-insulating device.

Background

The working environment of the engineering vehicle generally lacks of a shelter, so that the engineering vehicle can only stop under the sun when in rest, the temperature in the vehicle can be very high in a short time, particularly, the temperature in the vehicle can reach 70 ℃ or even higher under the radiation of burning sun for a long time, and people feel uncomfortable when entering the vehicle. However, the conventional vehicle-mounted cooling device of the automobile is generally powered by a generator, so that the vehicle-mounted cooling device, such as an air blower and an air conditioner, cannot work when the automobile is in a flameout state, so that the temperature inside a compartment is too high when the automobile enters the automobile to start working, and the driver may have the problems of heatstroke and the like which harm the body, and the harmful substances are volatilized among plastics in the automobile due to long-time sun irradiation, so that the air in the compartment is mixed and the physical and mental health of the driver is also harmed.

Disclosure of Invention

The invention aims to provide an engineering vehicle cab with a sun-shading and heat-insulating device, so as to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: an engineering vehicle cab with a sun-shading and heat-insulating device. This cockpit includes the automobile body, windshield, montant, horizontal pole, connecting block, locking mechanical system, sunshade mechanism and heat dissipation mechanism part, two montants are located the windshield both sides respectively, the equal fixed connection automobile body of two montant one end, two montants are kept away from two connecting blocks of automobile body one end difference fixed connection to two montants, the horizontal pole both ends are rotated and are connected two connecting blocks, the equal fixed connection automobile body of two connecting blocks, locking mechanical system one end fixed connection automobile body, locking mechanical system keeps away from automobile body one end and connects the connecting block, sunshade mechanism one end fixed connection horizontal pole, heat dissipation mechanism fixed connection sunshade mechanism one side. Be equipped with two montants in windshield both sides, rotate with the horizontal pole between two montants and connect, can block windshield just when sunshade mechanism expandes, locking mechanical system locks sunshade mechanism in connecting block one side, locking mechanical system just triggers the unblock and expandes sunshade mechanism when the temperature reaches the timing in the car, and sunshade mechanism and heat dissipation mechanism cooperation are cooled down to the carriage is inside this moment, effectively avoid sunshine to penetrate the driver's cabin directly, cause the damage to driver's cabin internals.

Further, the locking mechanism comprises a first air chamber, a second air chamber, a connecting rod, a push rod, a first sliding block, a first rotating shaft, a telescopic pin, a first spring, a fixed block and a spring component, one side of the first air chamber is fixedly connected with the vehicle body, the second air chamber is fixedly connected with the first air chamber, the first air chamber is communicated with the second air chamber, the push rod is arranged in the second air chamber, one end of the push rod is slidably connected with the inner wall of the second air chamber in the second air chamber, the other end of the push rod extends out of the second air chamber and is fixedly connected with the first sliding block, the first sliding block is provided with a first hole, an internal thread is arranged in the first hole, an external thread is arranged on the outer side of the first rotating shaft, the first sliding block is sleeved on the first rotating shaft and is in threaded connection with the first rotating shaft, the first rotating shaft is rotatably connected with one side of the fixed block, the fixed block is equipped with No. two holes with pivot hookup location department, telescopic pin one end is equipped with the external screw thread and passes in stretching into the recess and pivot threaded connection No. one from No. two holes, a pivot one side fixed connection clockwork spring is kept away from to the fixed block, clockwork spring other end fixed connection one side connecting block, be equipped with the spacing groove on the connecting block, the telescopic pin is kept away from a pivot one end and is stretched into the spacing inslot, No. two downthehole springs that are equipped with, a spring one end fixed connection fixed block, a spring other end fixed connection telescopic pin, the fixed block is close to a pivot one side fixed connection connecting rod, a pivot one end fixed connection automobile body is kept away from to the connecting rod. The inside gas of air chamber is heated can the inflation, and then the increase in volume, some gas gets into No. two air chambers and promotes the push rod and gos forward, and then drive a slider and remove to being close to the fixed block direction, and then it is rotatory to drive a pivot, a pivot can drive the flexible round pin seesaw, the effect of a spring can be so that can reset to initial condition after the flexible round pin withdrawal, flexible round pin during initial condition is with the rigidity between connecting block and the fixed block, be equipped with the clockwork spring of holding power state between connecting block and the fixed block, when the flexible round pin withdrawal, the connecting block receives the power of clockwork spring and can rotate, and then shelters from windshield with sunshade mechanism's expansion, sunshade mechanism's expansion back and heat dissipation mechanism's cooperation and then for carriage inside sunshade and. The first air chamber is filled with helium which has a good thermal expansion effect and is nontoxic.

Furthermore, the sun-shading mechanism comprises a sun-shading curtain, a second sliding block, a plurality of cavities, a first pipeline, a one-way valve mechanism, a turbofan, a second rotating shaft and a wind shield mechanism part, one end of the sun-shading curtain is fixedly connected with a cross rod, two sides of one end, far away from the cross rod, of the sun-shading curtain are fixedly connected with the second sliding block, the second sliding block is provided with a third hole, a vertical rod penetrates through the second sliding block and is in sliding connection with the second sliding block from the third hole, the cavities are uniformly distributed in the sun-shading curtain, the cavities are internally provided with the first pipeline, the first pipeline is attached to the inner wall of the sun-shading curtain to form a closed loop, a closed cavity is arranged at the joint of the closed loop of the first pipeline, one end of the second rotating shaft is rotatably connected to the inner wall of the closed cavity, the other end of the second rotating shaft extends out, one end, far away from the closed cavity, of the second rotating shaft extends out of the sunshade curtain, one end, far away from the closed cavity, of the second rotating shaft extends out of the sunshade curtain and is fixedly connected with a wind shield, and a one-way valve mechanism is arranged on the first pipeline. When the telescopic pin of locking mechanical system retracts, under the effect of clockwork spring, the horizontal pole is rotatory to launch the sunshade screen, No. two sliders on the sunshade screen can descend along the montant, and then shelter from windshield, the sunshade screen receives the direct sunlight near windshield one side, the temperature can be higher than sunshade screen and keep away from windshield one side, so air in a pipeline can follow the one side that the temperature is high and flow to the low one side of temperature, and then can drive turbofan rotatory, and then it is rotatory to drive the deep bead, the deep bead rotates and can drive air around with higher speed and flow, can be with the temperature reduction in the carriage with the heat dissipation mechanism cooperation again.

Furthermore, the check valve mechanism comprises an annular stop block, a spring and a conical block component, wherein the annular stop block and the annular stop block are fixed on the inner wall of the pipeline, one end of the spring is fixedly connected with the annular stop block, the other end of the spring is fixedly connected with the conical block, and the conical block is away from one end of the spring and is clamped on one side of the annular stop block. When the air current got into the check valve mechanism from conical block point end in the pipeline, conical block can compress No. two springs, and then formed the gap between conical block and No. two annular dog, and the air current can normally pass through, when the air current flowed into the check valve mechanism from an annular dog direction, conical block received the power of the direction of directional No. two annular dog, so conical block and No. two annular dog closely laminate, and the air current then can't pass.

Further, heat dissipation mechanism is including heat dissipation room and No. two pipelines, heat dissipation room lateral wall fixed connection sunshade screen lateral wall, each No. two pivots that the heat dissipation room stretches out on the sunshade screen correspond position department and are equipped with No. four holes, each No. two pivots stretches into the heat dissipation room from No. four downthehole, the heat dissipation room is close to horizontal pole one side and is equipped with the opening, No. two pipelines of open-ended one end fixed connection are kept away from to the heat dissipation room, No. two pipelines are kept away from heat dissipation room one side from the car roof intercommunication car outside. The wind shield rotates in the heat dissipation chamber, can drive the indoor air current of heat dissipation to flow with higher speed, sets up the air intake of heat dissipation chamber above, can flow to outside the car through No. two pipelines with more hot-air through the heat dissipation chamber, accelerates to further reduce the interior temperature of carriage.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the locking mechanism is arranged to automatically unfold the sun-shading mechanism to shade and cool the windshield when the temperature of the carriage reaches a certain temperature, and the temperature difference between the inner side and the outer side of the sun-shading mechanism is used as power to cooperate with the heat dissipation mechanism to cool the interior of the carriage. The cooling device is simple in structure, scientific and reasonable, effectively prevents harmful substances generated between plastics in the carriage due to direct sunlight from harming the health of drivers, cools the interior of the carriage, is beneficial to enabling the drivers to directly drive vehicles without waiting, saves production time and improves production efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic overall front view of the present invention;

FIG. 2 is a schematic view of the locking mechanism of the present invention;

FIG. 3 is a schematic view of the sunshade mechanism of the present invention;

FIG. 4 is a schematic view of the internal top view of the sunshade of the present invention;

FIG. 5 is a schematic view of the one-way valve mechanism of the present invention;

FIG. 6 is a schematic view of a turbofan configuration of the present invention;

in the figure: 1-a vehicle body; 2-a windshield; 3-vertical rod; 4-a cross bar; 5, connecting blocks; 6-a locking mechanism; 601-air chamber I; 602-air chamber number two; 603-connecting rod; 604-a push rod; 605-a slider; 606-a spindle; 607-telescoping pin; 608-spring number one; 609-fixed block; 610-spring; 7-a sun-shading mechanism; 71-a sun-shading curtain; 72-second slider; 73-a chamber; 74-first pipeline; 75-a one-way valve mechanism; 751-ring stop No. one; 752-number two annular stop; 753-spring two; 754-taper block; 76-a turbofan; 77-second rotating shaft; 78-wind deflector; 8-a heat dissipation mechanism; 81-a heat dissipation chamber; 82-pipeline number two.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-6, the present invention provides the following technical solutions: the utility model provides an engineering vehicle cockpit with sunshade heat-proof device, this cockpit includes automobile body 1, windshield 2, montant 3, horizontal pole 4, connecting block 5, locking mechanical system 6, sunshade mechanism 7 and 8 parts of heat dissipation mechanism, two montants 3 are located windshield 2 both sides respectively, the equal fixed connection automobile body 1 of 3 one ends of two montants, two connecting blocks 5 of 1 one end difference fixed connection of automobile body are kept away from to two

montants

3, 4 both ends of horizontal pole are rotated and are connected two connecting blocks 5, two equal fixed connection automobile body 1 of connecting block 5, 6 one end fixed connection automobile body 1 of locking mechanical system, locking mechanical system 6 is kept away from 1 one end of automobile body and is connected connecting

block

5, 7 one end fixed connection horizontal poles 4 of sunshade mechanism, 8 fixed connection sunshade mechanism 7 one side of heat dissipation mechanism. Be equipped with two montants 3 in 2 both sides of windshield, rotate with horizontal pole 4 between two montants 3 and connect, can block windshield 2 just when sunshade mechanism 7 expandes, locking mechanical system 6 locks sunshade mechanism 7 in 5 one sides of connecting block, locking mechanical system 6 only triggers the unblock and expandes sunshade mechanism 7 when the temperature reaches in the car when certain, sunshade mechanism 7 and 8 cooperations of heat dissipation mechanism cool down to the carriage is inside this moment, effectively avoid sunshine to penetrate directly and get into the driver's cabin, cause the damage to driver's cabin internals. The locking mechanism 6 comprises a first air chamber 601, a second air chamber 602, a connecting rod 603, a push rod 604, a first sliding block 605, a first rotating shaft 606, a telescopic pin 607, a first spring 608, a fixed block 609 and a spring 610, one side of the first air chamber 601 is fixedly connected with the vehicle body 1, the second air chamber 602 is fixedly connected with the first air chamber 601, the first air chamber 601 is communicated with the second air chamber 602, the first air chamber 601 is filled with helium which has good and non-toxic thermal expansion effect, gas expands due to heating, molecules move violently, intermolecular gaps increase, air pressure decreases, gas volume increases, the push rod 604 is arranged in the second air chamber 602, one end of the push rod 604 is slidably connected with the inner wall of the second air chamber 602 in the second air chamber 602, so that the gas in the first air chamber 601 expands due to heating and enters the second air chamber 602 to push the push rod 604 to advance, the other end of the push rod 604 extends out of the second air chamber 602 and is fixedly connected with, the first sliding block 605 is provided with a first hole, an internal thread is arranged in the first hole, an external thread is arranged on the outer side of the first rotating shaft 606, the first sliding block 605 is sleeved on the first rotating shaft 606 and is in threaded connection with the first rotating shaft 606, the first rotating shaft 606 is driven to rotate when the first sliding block 605 slides, the first rotating shaft 606 is rotatably connected with one side of the fixed block 609, one end of the first rotating shaft 606, which is close to the fixed block 609, is provided with a groove, an internal thread is arranged in the groove, a second hole is arranged at the connecting position of the fixed block 609 and the first rotating shaft 606, one end of the telescopic pin 607 is provided with an external thread, the external thread penetrates through the second hole to extend into the groove to be in threaded connection with the first rotating shaft 606, and then when the first rotating shaft 606 rotates, the telescopic pin 607 moves along the axial direction of the first rotating shaft 606, the external thread direction on the telescopic, a pivot 606 rotation direction can make the telescopic pin 607 to keeping away from the motion of fixed block 609 direction, a pivot 606 one side fixed connection clockwork spring 610 is kept away from to fixed block 609, clockwork spring 610 other end fixed connection one side connecting block 5, be equipped with the spacing groove on the connecting block 5, telescopic pin 607 is kept away from a pivot 606 one end and is stretched into the spacing inslot, No. two downthehole springs 608 that are equipped with, a spring 608 one end fixed connection fixed block 609, a spring 608 other end fixed connection telescopic pin 607, fixed block 609 is close to a pivot 606 one side fixed connection connecting rod 603, a pivot 606 one end fixed connection automobile body 1 is kept away from to connecting rod 603. The internal gas of the first air chamber 601 is heated and expanded, the volume is increased, a part of the gas enters the second air chamber 602 to push the push rod 604 to advance, the first sliding block 605 is driven to move towards the direction close to the fixed block 609, the first rotating shaft 606 is driven to rotate, the first rotating shaft 606 drives the telescopic pin 607 to move back and forth, the first spring 608 is used for enabling the telescopic pin 607 to reset to an initial state after retracting, the telescopic pin 607 fixes the position between the connecting block 5 and the fixed block 609 during the initial state, a spring 610 in a force accumulation state is arranged between the connecting block 5 and the fixed block 609, when the telescopic pin 607 retracts, the connecting block 5 is rotated by the force of the spring 610, the sun-shading mechanism 7 is unfolded to shade the windshield 2, and the sun-shading mechanism 7 is matched with the heat dissipation mechanism 8 after being unfolded to shade the interior of the carriage and cool. The sunshade mechanism 7 comprises a sunshade curtain 71, a second sliding block 72, a plurality of cavities 73, a first pipeline 74, a one-way valve mechanism 75, a turbofan 76, a second rotating shaft 77 and a wind shield 78 mechanism part, one end of the sunshade curtain 71 is fixedly connected with the cross rod 4, two sides of one end, far away from the cross rod 4, of the sunshade curtain 71 are fixedly connected with the second sliding block 72, a third hole is formed in the second sliding block 72, the vertical rod 3 penetrates through the second sliding block 72 from the third hole to be in sliding connection with the second sliding block 72, the cavities 73 are uniformly distributed in the sunshade curtain 71, the first pipeline 74 is arranged in each cavity 73, the first pipeline 74 is attached to the inner wall of the sunshade curtain 71 to form a closed loop, a closed cavity is arranged at the joint of the closed loop of the first pipeline 74, one end of the second rotating shaft 77 is rotatably connected to the inner wall of the closed cavity, and the other end of the second rotating shaft, the turbofan 76 is sleeved on a second rotating shaft 77 in the closed cavity, one end, far away from the closed cavity, of the second rotating shaft 77 extends out of the sunshade screen 71, one end, extending out of the sunshade screen 71, of the second rotating shaft 77 is fixedly connected with a wind shield 78, and the first pipeline 74 is provided with a one-way valve mechanism 75. When the telescopic pin 607 of the locking mechanism 6 retracts, under the action of the spiral spring 610, the cross rod 4 rotates to unfold the sun-shading curtain 71, the second sliding block 72 on the sun-shading curtain 71 descends along the vertical rod 3 to shade the windshield 2, one side of the sun-shading curtain 71 close to the windshield 2 is directly irradiated by the sun, the temperature is higher than that of the sun-shading curtain 71 far away from the windshield 2, so that the air in the first pipeline 74 flows from the side with high temperature to the side with low temperature to form an air flow, the one-way valve mechanism 75 is arranged inside the first pipeline 74, so that the air flow can be controlled to always flow towards one direction, the air flow drives the turbofan 76 to rotate, the wind shield 78 is driven to rotate, the wind shield 78 rotates to drive the ambient air to flow in an accelerated manner, and the heat dissipation mechanism 8 is matched. The check valve mechanism 75 comprises a first annular stop 751, a second annular stop 752, a second spring 753 and a conical block 754, wherein the first annular stop 751 and the second annular stop 752 are fixed on the inner wall of the first pipeline 74, one end of the second spring 753 is fixedly connected with the first annular stop 751, the other end of the second spring 753 is fixedly connected with the conical block 754, and one end, far away from the second spring 753, of the conical block 754 is clamped on one side of the second annular stop 752. When the air flow in the first pipeline 74 enters the one-way valve mechanism 75 from the tip of the conical block 754, the conical block 754 compresses the second spring 753, a gap is formed between the conical block 754 and the second annular stop 752, the air flow can normally pass through, and when the air flow flows into the one-way valve mechanism 75 from the direction of the first annular stop 751, the conical block 754 is subjected to a force in the direction pointing to the second annular stop 752, so that the conical block 754 is tightly attached to the second annular stop 752, and the air flow cannot pass through. The heat dissipation mechanism 8 comprises a heat dissipation chamber 81 and a second pipeline 82, the side wall of the heat dissipation chamber 81 is fixedly connected with the side wall of the sun-shading curtain 71, a fourth hole is formed in the corresponding position of each second rotating shaft 77 extending out of the sun-shading curtain 71, the heat dissipation chamber 81 extends into the heat dissipation chamber 81 from the fourth hole, an opening is formed in the side, close to the cross rod 4, of the heat dissipation chamber 81, the second pipeline 82 is far away from the one end of the opening and fixedly connected with the one end of the heat dissipation chamber 81, and the second pipeline 82 is far away from the outside of the vehicle roof communicated with the one side of the heat dissipation chamber. The wind shield 78 rotates in the heat dissipation chamber 81 to drive the airflow in the heat dissipation chamber 81 to flow in an accelerated manner, and the air inlet of the heat dissipation chamber 81 is arranged above, so that more hot air can flow out of the vehicle through the heat dissipation chamber 81 via the second pipeline 82, and the temperature in the compartment is further reduced in an accelerated manner.

The working process of the invention is as follows: in an initial state, the spring 610 is in a power storage state, the sun-shading curtain 71 is wound on the cross rod 4, the telescopic pin 607 penetrates through a second hole of the fixing block 609 and extends into a limiting groove of the connecting block 5, when the engineering vehicle is directly irradiated by sunlight and the temperature in a carriage rises, helium in the first air chamber 601 is heated to expand, the volume of the gas is increased to enter the second air chamber 602, the push rod 604 is pushed in the second air chamber 602 to advance, the push rod 604 drives the first sliding block 605 to advance, the first sliding block 605 moves to drive the first rotating shaft 606 to rotate, the telescopic pin 607 retracts from the limiting groove, the connecting block 5 starts to drive the cross rod 4 to rotate under the action of the spring 610, the sun-shading curtain 71 on the cross rod 4 is unfolded along the vertical rod 3 under the action of the second sliding block 72 to shade the windshield 2, at the moment, one side of the sun-shading curtain 71 is irradiated by the sun, the temperature is higher than the other side, gas in the first pipeline, and then drive turbofan 76 rotatory, turbofan 76 drives No. two pivots 77 rotatoryly, and then drives deep bead 78 and rotates, and deep bead 78 is in the heat dissipation room 81 of sunshade screen 71 one side, and heat dissipation room 81 one side is equipped with the opening, and the opposite side stretches out the carriage through No. two pipeline 82, and deep bead 78 rotates and drives the air current flow in the heat dissipation room 81, and then discharges the high temperature gas in the carriage outside the carriage.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an engineering vehicle cockpit with sunshade heat-proof device which characterized in that: the cockpit comprises a vehicle body (1), a windshield (2), vertical rods (3), a transverse rod (4), connecting blocks (5), a locking mechanism (6), a sun-shading mechanism (7) and a heat dissipation mechanism (8) component, wherein one ends of the two vertical rods (3) are fixedly connected with the vehicle body (1), the two vertical rods (3) are respectively positioned at two sides of the windshield (2), one ends of the two vertical rods (3) far away from the vehicle body (1) are respectively and fixedly connected with the two connecting blocks (5), two ends of the transverse rod (4) are rotatably connected with the two connecting blocks (5), the two connecting blocks (5) are respectively and fixedly connected with the vehicle body (1), one ends of the locking mechanism (6) are fixedly connected with the vehicle body (1), one ends of the locking mechanism (6) far away from the vehicle body (1) are connected with the connecting blocks (5), one, the heat dissipation mechanism (8) is fixedly connected with one side of the sun shading mechanism (7).

2. The engineering vehicle cab with the sunshade and thermal insulation device as claimed in claim 1, wherein: the locking mechanism (6) comprises a first air chamber (601), a second air chamber (602), a connecting rod (603), a push rod (604), a first sliding block (605), a first rotating shaft (606), a telescopic pin (607), a first spring (608), a fixed block (609) and a spring (610) component, one side of the first air chamber (601) is fixedly connected with the vehicle body (1), the second air chamber (602) is fixedly connected with the first air chamber (601), the first air chamber (601) is communicated with the second air chamber (602), the push rod (604) is arranged in the second air chamber (602), one end of the push rod (604) is slidably connected with the inner wall of the second air chamber (602) in the second air chamber (602), the other end of the push rod (604) extends out of the second air chamber (602) and is fixedly connected with the first sliding block (605), a first hole is formed in the first sliding block (605), and an internal thread is formed in the first hole, the outer side of the first rotating shaft (606) is provided with an external thread, the first sliding block (605) is sleeved on the first rotating shaft (606) and is in threaded connection with the first rotating shaft (606), the first rotating shaft (606) is rotatably connected with one side of the fixing block (609), one end, close to the fixing block (609), of the first rotating shaft (606) is provided with a groove, an internal thread is arranged in the groove, a second hole is formed in the connecting position of the fixing block (609) and the first rotating shaft (606), one end of the telescopic pin (607) is provided with an external thread, the external thread penetrates through the second hole and extends into the groove to be in threaded connection with the first rotating shaft (606), one side, far away from the first rotating shaft (606), of the fixing block (609) is fixedly connected with the spring (610), the other end of the spring (610) is fixedly connected with the connecting block (5), the connecting block (5) is provided with a limiting groove, one end, far, a spring (608) is arranged in the second hole, one end of the spring (608) is fixedly connected with a fixed block (609), the other end of the spring (608) is fixedly connected with a telescopic pin (607), the fixed block (609) is close to one side of a rotating shaft (606) and is fixedly connected with a connecting rod (603), and one end of the connecting rod (603) far away from the rotating shaft (606) is fixedly connected with a vehicle body (1).

3. The engineering vehicle cab with the sunshade and thermal insulation device as claimed in claim 1, wherein: the first air chamber (601) is filled with helium.

4. The engineering vehicle cab with the sunshade and thermal insulation device as claimed in claim 1, wherein: sunshade mechanism (7) includes sunshade screen (71), No. two slider (72), a plurality of cavities (73), pipeline (74), check valve mechanism (75), turbofan (76), No. two pivot (77) and deep bead (78) mechanisms, sunshade screen (71) one end fixed connection horizontal pole (4), horizontal pole (4) one end both sides fixed connection No. two slider (72) are kept away from in sunshade screen (71), be equipped with No. three holes on No. two slider (72), montant (3) run through No. two slider (72) and No. two slider (72) sliding connection from No. three holes, a plurality of cavities (73) evenly distributed are inside sunshade screen (71), all be equipped with pipeline (74) in a plurality of cavities (73), pipeline (74) laminate and form closed loop on sunshade screen (71) inner wall, the closed loop junction of pipeline (74) is equipped with airtight cavity, rotate on the airtight cavity inner wall and connect No. two pivot (77) one end, airtight cavity is stretched out to No. two pivot (77) other ends, turbofan (76) establish at airtight cavity endotheca on No. two pivot (77), No. two pivot (77) are kept away from airtight cavity one end and are stretched out outside sunshade screen (71), No. two pivot (77) stretch out sunshade screen (71) and serve fixed connection deep bead (78), be equipped with check valve mechanism (75) on pipeline (74).

5. The engineering vehicle cab with the sunshade and thermal insulation device as claimed in claim 1, wherein: the check valve mechanism (75) comprises a first annular stop block (751), a second annular stop block (752), a second spring (753) and a conical block (754) component, wherein the first annular stop block (751) and the second annular stop block (752) are both fixed on the inner wall of a first pipeline (74), one end of the second spring (753) is fixedly connected with the first annular stop block (751), the other end of the second spring (753) is fixedly connected with the conical block (754), and one end, far away from the second spring (753), of the conical block (754 is clamped on one side of the second annular stop block (752).

6. The engineering vehicle cab with the sunshade and thermal insulation device as claimed in claim 1, wherein: radiating mechanism (8) are including heat dissipation room (81) and No. two pipeline (82), heat dissipation room (81) lateral wall fixed connection sunshade screen (71) lateral wall, each No. two pivot (77) that heat dissipation room (81) stretched out on sunshade screen (71) correspond the position department and are equipped with No. four holes, each No. two pivot (77) are from No. four downthehole heat dissipation room (81) of stretching into, heat dissipation room (81) are close to horizontal pole (4) one side and are equipped with the opening, No. two pipeline (82) of open-ended one end fixed connection are kept away from to heat dissipation room (81), No. two pipeline (82) are kept away from heat dissipation room (81) one side and are linked together the car from the roof car.