阅读说明：本技术 一种水利工程施工用安全警报装置 (Safety alarm device is used in hydraulic engineering construction ) 是由 孙艳华 于 2021-07-26 设计创作，主要内容包括：本发明涉及水利工程技术领域,尤其涉及一种水利工程施工用安全警报装置。本发明要解决的是现有安全警示装置不易安插固定,结构不够巧妙,不够灵活的技术问题。为了解决上述技术问题,本发明提供了一种水利工程施工用安全警报装置,本发明由安装折叠机构和转动机构组成,通过蜗轮和蜗杆的传动原理以及第一齿轮和第三齿轮的啮合关系,能够达到转动螺纹钻头的目的；通过蜗轮和蜗杆的传动原理以及螺纹套接的结构,能够达到伸缩垫板的目的；通过压缩压缩弹簧,能够使锯齿和第二齿轮脱离,并使第一卡齿和第二卡齿啮合,再转动调节筒便能达到调节显示屏显示角度的目的,相较于现有技术,本发明结构巧妙,更加灵活。(The invention relates to the technical field of hydraulic engineering, in particular to a safety alarm device for hydraulic engineering construction. The invention aims to solve the technical problems that the existing safety warning device is not easy to insert and fix, has an ingenious structure and is not flexible. In order to solve the technical problem, the invention provides a safety alarm device for hydraulic engineering construction, which consists of an installation folding mechanism and a rotating mechanism, and can achieve the purpose of rotating a threaded drill bit through the transmission principle of a worm gear and a worm and the meshing relation of a first gear and a third gear; the purpose of stretching the base plate can be achieved through the transmission principle of the worm wheel and the worm and the structure of the threaded sleeve; the sawtooth and the second gear can be separated by compressing the compression spring, the first latch and the second latch are meshed, and the aim of adjusting the display angle of the display screen can be achieved by rotating the adjusting cylinder.)

1. The utility model provides a safety alarm device is used in hydraulic engineering construction which characterized in that: the foldable mounting box comprises a mounting box (6), a mounting folding mechanism, a bearing (7) and a rotating mechanism, wherein the mounting folding mechanism is fixedly mounted inside the mounting box (6), the bottom of the mounting folding mechanism movably penetrates through a bottom plate of the mounting box (6), and a display screen (13) is rotatably mounted on the outer surface of a side plate of the mounting box (6) through the rotating mechanism;

the mounting and folding mechanism comprises a third gear (29), a worm (4), a cavity (30), a threaded column (2) and a first threaded cylinder (5), three bearings (7) are fixedly mounted on an internal top plate of the mounting box (6), a second threaded cylinder (10), a mounting column (9) and the first threaded cylinder (5) are fixedly sleeved in the bottom inner ring of the three bearings (7) from left to right in sequence, the outer walls of the second threaded cylinder (10) and the first threaded cylinder (5) are fixedly sleeved with a first gear (8), the outer wall of the mounting column (9) is fixedly sleeved with a third gear (29), the third gear (29) is respectively meshed with the two first gears (8), the outer wall of the first threaded cylinder (5) located in the mounting box (6) is fixedly sleeved with a worm wheel (3), the worm wheel (3) is meshed with the worm (4), one end, far away from the mounting column (9), of the worm (4) movably penetrates through a side plate of the mounting box (6) and extends to the outside of the mounting box (6), the bottoms of the first threaded barrel (5) and the second threaded barrel (10) movably penetrate through a bottom plate of the mounting box (6) and are in threaded sleeve connection with the threaded column (2), a threaded drill bit (11) is fixedly mounted at the bottom of the mounting column (9), and the bottom of the threaded drill bit (11) movably penetrates through the bottom plate of the mounting box (6);

the rotating mechanism comprises a first rotating shaft (15), a second rotating shaft (21), an adjusting barrel (17), a clamping ring (24) and a display screen (13), wherein a first mounting plate (14) and a second mounting plate (16) are fixedly and vertically arranged on the back side surface of the mounting box (6), the first rotating shaft (15) is horizontally installed on the inner side surface of the first mounting plate (14) through a bearing (7), one end, far away from the bearing (7), of the first rotating shaft (15) is fixedly connected with one side surface of the display screen (13), the second rotating shaft (21) is fixedly installed on one side surface, close to the second mounting plate (16), of the display screen (13), an installation barrel (26) is horizontally installed in a penetrating mode, a spring barrel (18) is sleeved on the inner side surface of the installation barrel (26) in a horizontal sliding mode, a plurality of saw teeth (19) are fixedly and vertically arranged on the inner wall of the spring barrel (18) in the circumferential direction, a side that spring section of thick bamboo (18) are close to and adjust a section of thick bamboo (17) is provided with T type ring draw-in groove (31), a side fixed mounting that adjusts a section of thick bamboo (17) and is close to spring section of thick bamboo (18) has snap ring (24), snap ring (24) activity joint is in the inside of T type ring draw-in groove (31), the inside curb plate level fixed mounting who keeps away from spring section of thick bamboo (18) of adjusting a section of thick bamboo (17) has calorie post (22), the one end that display screen (13) were kept away from in second pivot (21) activity in proper order runs through a curb plate that installation section of thick bamboo (26) and spring section of thick bamboo (18) are close to display screen (13) to extend to the inside of spring section of thick bamboo (18), second pivot (21) are located the fixed cover of the inside one end outer wall of spring section of thick bamboo (18) and have second gear (20), second gear (20) and a plurality of sawtooth (19) meshing, the one end that second pivot (21) and calorie post (22) are close to each other is provided with second latch (28) respectively and first latch (23) The second latch (28) is matched with the first latch (23).

2. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: a plurality of compression springs (25) are horizontally and fixedly mounted between one side face, close to the display screen (13), of the spring cylinder (18) and the inner wall of the installation cylinder (26), and the compression springs (25) are circumferentially distributed along the edge of the inner wall of the installation cylinder (26).

3. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: the bottom of two screw thread post (2) all with the top fixed connection of backing plate (1), the center department of backing plate (1) is provided with cavity (30), the bottom activity of screw thread drill bit (11) runs through the bottom plate of install bin (6) and extends to the inside of cavity (30).

4. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: four corners of the bottom of the base plate (1) are fixedly provided with universal wheels (12).

5. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: the worm (4) is located the outside one end fixed mounting of install bin (6) and has handle (27), the surface of handle (27) scribbles anti-skidding coating.

6. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: one end, far away from the spring barrel (18), of the adjusting barrel (17) extends to the outside of the second mounting plate (16), and the outer surface of the adjusting barrel (17) is coated with an anti-skid coating.

7. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: one side surface of the adjusting cylinder (17) and one side surface of the spring cylinder (18) which are contacted with each other are coated with smooth coatings.

8. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: the outer surface of the installation box (6) is coated with a waterproof coating.

9. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: the diameter ratio of the first gear (8) to the third gear (29) is 2: 1.

10. The safety warning device for hydraulic engineering construction according to claim 1, characterized in that: the first rotating shaft (15) and the second rotating shaft (21) are positioned on the same horizontal line.

Technical Field

The invention relates to a safety alarm device, in particular to a safety alarm device for hydraulic engineering construction, and belongs to the technical field of hydraulic engineering.

Background

The prior patent (publication number: CN210667525U) discloses a safety warning device for hydraulic engineering construction, which comprises supporting rods and a supporting plate, wherein a warning board is arranged on the supporting plate between the two supporting rods, a fixing device is arranged below the supporting rods, fixing sleeves are sleeved at the tops of the supporting rods, a groove is formed in one side, opposite to the two fixing sleeves, of each fixing sleeve, and the top of the warning board is embedded in the groove. The inventor finds that the following problems in the prior art are not solved well in the process of realizing the scheme: 1. the device is not easy to be inserted in a place with hard soil; 2. the device can not change the angle of the warning device and is not flexible enough.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a safety warning device for hydraulic engineering construction.

The safety alarm device for the hydraulic engineering construction comprises an installation box, an installation folding mechanism, a bearing and a rotating mechanism, wherein the installation folding mechanism is fixedly installed inside the installation box, the bottom of the installation folding mechanism movably penetrates through a bottom plate of the installation box, and a display screen is rotatably installed on the outer surface of one side plate of the installation box through the rotating mechanism;

the installation folding mechanism comprises a third gear, a worm, a cavity, a threaded column and a first threaded cylinder, wherein three bearings are fixedly installed on an internal top plate of the installation box, the number of the bearings is three, a second threaded cylinder, an installation column and a first threaded cylinder are sequentially and fixedly sleeved in the inner ring at the bottom of the bearing from left to right, first gears are fixedly sleeved on the outer walls of the second threaded cylinder and the first threaded cylinder, a third gear is fixedly sleeved on the outer wall of the installation column, the third gear is respectively meshed with the two first gears, a worm wheel is fixedly sleeved on the outer wall of the first threaded cylinder in the installation box, the worm wheel is meshed with the worm, one end of the worm, which is far away from the installation column, movably penetrates through a side plate of the installation box and extends to the outside of the installation box, and the bottoms of the first threaded cylinder and the second threaded cylinder movably penetrate through a bottom plate of the installation box and are sleeved with the threaded column, the bottom of the mounting column is fixedly provided with a threaded drill bit, and the bottom of the threaded drill bit movably penetrates through the bottom plate of the mounting box;

the rotating mechanism comprises a first rotating shaft, a second rotating shaft, an adjusting cylinder, a clamping ring and a display screen, wherein a first mounting plate and a second mounting plate are vertically and symmetrically and fixedly mounted on the back side surface of the mounting box, the first rotating shaft is horizontally and rotatably mounted on the inner side surface of the first mounting plate through a bearing, one end, far away from the bearing, of the first rotating shaft is fixedly connected with one side surface of the display screen, a second rotating shaft is fixedly mounted on one side surface, close to the second mounting plate, of the display screen, the mounting cylinder is horizontally installed in the second mounting plate in a penetrating mode, the spring cylinder is horizontally and slidably sleeved in the mounting cylinder, a plurality of sawteeth are vertically and fixedly mounted on the inner wall of the spring cylinder in the circumferential direction, a T-shaped circular ring clamping groove is formed in one side surface, close to the adjusting cylinder, of the clamping ring is fixedly mounted on one side surface, close to the spring cylinder, and the clamping ring is movably clamped in the T-shaped circular ring clamping groove, the inside curb plate level fixed mounting who keeps away from spring cartridge of regulation section of thick bamboo has the calorie post, the one end that the display screen was kept away from in the second pivot is activity in proper order run through installation section of thick bamboo and the curb plate that spring cartridge is close to the display screen to extend to the inside of spring cartridge, the fixed cover of the inside one end outer wall that the second pivot is located spring cartridge has connect the second gear, second gear and a plurality of sawtooth meshing, the one end that second pivot and calorie post are close to each other is provided with second latch and first latch respectively, second latch and first latch looks adaptation.

Preferably, horizontal fixed mounting has many compression springs between a side that the spring case is close to the display screen and the installation section of thick bamboo inner wall, many compression springs are the circumference along installation section of thick bamboo inner wall edge and distribute.

Preferably, the bottom ends of the two threaded columns are fixedly connected with the top of the base plate, a cavity is formed in the center of the base plate, and the bottom of the threaded drill bit movably penetrates through the bottom plate of the installation box and extends into the cavity.

Preferably, universal wheels are fixedly mounted at four corners of the bottom of the base plate.

Preferably, a handle is fixedly installed at one end, located outside the installation box, of the worm, and an anti-slip coating is coated on the outer surface of the handle.

Preferably, the end of the adjusting cylinder far away from the spring cylinder extends to the outside of the second mounting plate, and the outer surface of the adjusting cylinder is coated with an anti-skid coating.

Preferably, the side surfaces of the adjusting cylinder and the spring cylinder, which are in contact with each other, are coated with a smooth coating.

Preferably, the outer surface of the installation box is coated with a waterproof coating.

Preferably, the ratio of the diameters of the first gear and the third gear is 2: 1.

Preferably, the first rotating shaft and the second rotating shaft are located on the same horizontal line.

The invention has the beneficial effects that:

1. the invention is provided with the installation folding mechanism, and the purpose of rotating the threaded drill bit can be achieved through the transmission principle of the worm wheel and the worm and the meshing relation of the first gear and the third gear, so that the threaded drill bit is firmly inserted into the ground to fix the device;

2. the device is provided with the mounting folding mechanism, the backing plate and the universal wheel are lifted and stored while the threaded drill bit is inserted into the ground fixing device through the transmission principle of the worm wheel and the worm and the structure of the threaded sleeve, otherwise, the backing plate and the universal wheel can be lowered and supported while the threaded drill bit is rotationally pulled out when the device is not used, and compared with the prior art, the device saves more space;

3. the invention is provided with the rotating mechanism, the sawtooth can be separated from the second gear by compressing the compression spring, the first latch can be meshed with the second latch, and the aim of adjusting the display angle of the display screen can be achieved by rotating the adjusting cylinder.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

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

FIG. 2 is a rear view of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

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

fig. 5 is a schematic view of the connection of the second gear and the spring cartridge of the present invention.

In the figure: 1. a base plate; 2. a threaded post; 3. a worm gear; 4. a worm; 5. a first threaded barrel; 6. installing a box; 7. a bearing; 8. a first gear; 9. mounting a column; 10. a second threaded barrel; 11. a thread drill bit; 12. a universal wheel; 13. a display screen; 14. a first mounting plate; 15. a first rotating shaft; 16. a second mounting plate; 17. an adjusting cylinder; 18. a spring case; 19. saw teeth; 20. a second gear; 21. a second rotating shaft; 22. clamping the column; 23. a first latch; 24. a snap ring; 25. a compression spring; 26. mounting the cylinder; 27. a handle; 28. a second latch; 29. a third gear; 30. a cavity; 31. t type ring card groove.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below 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.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1-5, a safety alarm device for hydraulic engineering construction comprises an installation box 6, an installation folding mechanism, a bearing 7 and a rotating mechanism, wherein the installation folding mechanism is fixedly installed inside the installation box 6, the bottom of the installation folding mechanism movably penetrates through the bottom plate of the installation box 6 and is fixedly provided with a backing plate 1, the outer surface of one side plate of the installation box 6 is rotatably provided with a display screen 13 through the rotating mechanism, four corners of the bottom of the backing plate 1 are fixedly provided with universal wheels 12, and the installation of the universal wheels 12 can facilitate moving and carrying of the device;

the mounting and folding mechanism comprises a third gear 29, a worm 4, a cavity 30, a threaded column 2 and a first threaded cylinder 5, three bearings 7 are fixedly mounted on an internal top plate of the mounting box 6, a second threaded cylinder 10, a mounting column 9 and the first threaded cylinder 5 are fixedly sleeved in the inner ring at the bottom of the three bearings 7 from left to right, first gears 8 are fixedly sleeved on the outer walls of the second threaded cylinder 10 and the first threaded cylinder 5, a third gear 29 is fixedly sleeved on the outer wall of the mounting column 9, the third gears 29 are respectively meshed with the two first gears 8, the second threaded cylinder 10 and the first threaded cylinder 5 penetrate through a bottom plate of the mounting box 6, the second threaded cylinder 10 and the first threaded cylinder 5 are in clearance fit with the bottom plate of the mounting box 6, a worm wheel 3 is fixedly sleeved on the outer wall of the first threaded cylinder 5 inside the mounting box 6, the worm wheel 3 is meshed with the worm 4, one end of the worm 4 far away from the mounting column 9 movably penetrates through a side plate of the mounting box 6 and extends to the outside of the mounting box 6, a handle 27 is fixedly installed at one end of the worm 4 positioned outside the installation box 6, an anti-skid coating is coated on the outer surface of the handle 27, the bottoms of the first thread cylinder 5 and the second thread cylinder 10 movably penetrate through the bottom plate of the installation box 6 and are in threaded sleeve connection with the thread columns 2, the bottom ends of the two thread columns 2 are fixedly connected with the top of the backing plate 1, a cavity 30 is arranged at the center of the backing plate 1, a thread drill bit 11 is fixedly installed at the bottom of the installation column 9, the bottom of the thread drill bit 11 movably penetrates through the bottom plate of the installation box 6 and extends into the cavity 30, the device is installed through an installation folding mechanism, the handle 27 is rotated to drive the worm 4 to rotate the first thread cylinder 5 through worm and worm gear meshing driving belts, and is meshed with the two first gears 8 through a third gear 29, so that the first thread cylinder 5, the installation column 9 and the second thread cylinder 10 synchronously rotate, the installation column 9 can drive the thread drill bit 11 to firmly drill into, the first thread cylinder 5 and the second thread cylinder 10 enable the two thread columns 2 to be screwed in to drive the base plate 1 to ascend;

the rotating mechanism comprises a first rotating shaft 15, a second rotating shaft 21, an adjusting cylinder 17, a clamping ring 24 and a display screen 13, a first mounting plate 14 and a second mounting plate 16 are vertically and symmetrically and fixedly mounted on the back side surface of the mounting box 6, the first rotating shaft 15 is horizontally and rotatably mounted on the inner side surface of the first mounting plate 14 through a bearing 7, one end, far away from the bearing 7, of the first rotating shaft 15 is fixedly connected with one side surface of the display screen 13, a second rotating shaft 21 is fixedly mounted on one side surface, close to the second mounting plate 16, of the display screen 13, a mounting cylinder 26 is horizontally and penetratingly mounted on the second mounting plate 16, a spring cylinder 18 is horizontally sleeved in the mounting cylinder 26 in a sliding and sleeving manner, a plurality of compression springs 25 are horizontally and fixedly mounted between one side surface, close to the display screen 13, of the spring cylinder 18 and the inner wall of the mounting cylinder 26, the plurality of compression springs 25 are circumferentially distributed along the edge of the inner wall of the mounting cylinder 26, a plurality of sawteeth 19 are vertically and fixedly mounted on the inner wall of the spring cylinder 18 along the circumferential direction, a T-shaped circular ring clamping groove 31 is arranged on one side surface of the spring barrel 18 far away from the compression spring 25, a clamping ring 24 is fixedly arranged on one side surface of the adjusting barrel 17 near the spring barrel 18, the clamping ring 24 is movably clamped inside the T-shaped circular ring clamping groove 31, a clamping column 22 is horizontally and fixedly arranged on one side plate of the adjusting barrel 17 far away from the spring barrel 18, one end of the second rotating shaft 21 far away from the display screen 13 sequentially and movably penetrates through the mounting barrel 26 and the side plate of the spring barrel 18 near the display screen 13 and extends to the inside of the spring barrel 18, a second gear 20 is fixedly sleeved on the outer wall of one end of the second rotating shaft 21 in the spring barrel 18 and is meshed with a plurality of saw teeth 19, one end of the second rotating shaft 21 and the clamping column 22 near each other is respectively provided with a second clamping tooth 28 and a first clamping tooth 23, the second clamping tooth 28 and the first clamping tooth 23 are matched, the display angle of the display screen 13 can be adjusted through a rotating mechanism, the adjusting cylinder 17 is pressed to inwards abut against the spring cylinder 18, the spring cylinder 18 moves inwards in a horizontal straight line relative to the mounting cylinder 26, the sawtooth 19 and the second gear 20 which are originally in a meshed state are separated, the second rotating shaft 21 is further enabled not to be limited to rotate, meanwhile, the clamping column 22 in the adjusting cylinder 17 is close to the second rotating shaft 21, the first clamping tooth 23 and the second clamping tooth 28 start to be contacted and meshed, the adjusting cylinder 17 is rotated when the adjusting cylinder 17 is pressed inwards, the second rotating shaft 21 rotates along with the adjusting cylinder 17 under the sliding fit of the clamping ring 24 and the T-shaped circular ring clamping groove 31, the spring cylinder 18 cannot rotate along with the second rotating shaft 21, the display screen 13 is rotated by the second rotating shaft 21, the purpose of adjusting the display angle of the display screen 13 is achieved, after the angle of the display screen 13 is adjusted, the adjusting cylinder 17 is loosened, the spring cylinder 18 and the adjusting cylinder 17 can return to the original positions by the plurality of compression springs 25, so that the saw teeth 19 are engaged again to lock the second shaft 21, the second shaft 21 can not rotate relative to the spring barrel 18, the second latch 28 and the first latch 23 are disengaged, and the display 13 is fixed at the adjusted position.

Furthermore, the end, far away from the spring case 18, of the adjusting cylinder 17 extends to the outside of the second mounting plate 16, the outer surface of the adjusting cylinder 17 is coated with an anti-slip coating, the outer surface of the mounting box 6 is coated with a waterproof coating, one side face, in contact with each other, of the adjusting cylinder 17 and the spring case 18 is coated with a smooth coating, when the adjusting cylinder 17 is rotated, relative rotation can occur between the adjusting cylinder 17 and the spring case 18, the smooth coating is coated, and abrasion between the adjusting cylinder 17 and the spring case 18 can be reduced.

Still further, the diameter ratio of the first gear 8 to the third gear 29 is 2:1, and the smaller the diameter of the third gear 29, the faster the rotation speed relative to the first gear 8, thereby increasing the speed of the auger bit 11 drilling into the earth.

Furthermore, the first rotating shaft 15 and the second rotating shaft 21 are located on the same horizontal line, and the first rotating shaft 15 and the second rotating shaft 21 are located on the same horizontal line, so that the display angle of the display 13 can be better adjusted.

The working principle is as follows: when the electric appliance component appearing in the application document is used, the electric appliance component is externally connected with a power supply and a control switch, the device is provided with an installation folding mechanism, a rotating handle 27 is provided with a rotating worm 4, the worm 4 drives a worm wheel 3 engaged with the worm 4 to rotate, the worm wheel 3 drives a first thread cylinder 5, the first thread cylinder 5 drives a first gear 8, because a third gear 29 is engaged with two first gears 8, the third gear 29 drives a mounting column 9 and another first gear 8, a second thread cylinder 10 fixedly sleeved inside another first gear 8 rotates along with the third gear, because the bottom ends of the first thread cylinder 5 and the second thread cylinder 10 are both in threaded sleeve connection with a thread column 2, and the mounting column 9 can drive a thread drill bit 11 to rotate, when the device is installed downwards, the thread drill bit 11 can be firmly drilled into the soil, and a backing plate 1 can be driven to ascend through the screwing of the two thread columns 2, so that the space is saved, in addition, the display screen 13 not only has the function of displaying the warning words, but also has the function of broadcasting the warning words through voice;

the device is provided with a rotating mechanism, when the display angle of the display screen 13 needs to be changed, only the adjusting cylinder 17 needs to be horizontally and inwardly pressed by a hand, the adjusting cylinder 17 can inwardly abut against the spring cylinder 18, the spring cylinder 18 is horizontally and slidably sleeved in the mounting cylinder 26, so that the adjusting cylinder can only do horizontal linear motion relative to the mounting cylinder 26 and cannot rotate, the compression spring 25 is compressed, the original meshing state of the sawtooth 19 and the second gear 20 is changed into a disengaged state due to the movement of the spring cylinder 18, the clamping column 22 in the adjusting cylinder 17 is close to the second rotating shaft 21, the first clamping tooth 23 and the second clamping tooth 28 start to be contacted and meshed, when the adjusting cylinder 17 is inwardly pressed, the adjusting cylinder 17 starts to rotate, the adjusting cylinder 17 is movably clamped at one side of the spring cylinder 18 through the clamping ring 24, so that the spring cylinder 18 cannot rotate, the clamping column 22 rotates along with the adjusting cylinder 17, and through meshing the second rotating shaft 21, the second rotating shaft 21 rotates the display screen 13, thereby achieving the purpose of adjusting the display angle of the display screen 13, after the angle of the display screen 13 is adjusted, the adjusting cylinder 17 is loosened, the restoring force of the plurality of compression springs 25 can make the spring cylinder 18 and the adjusting cylinder 17 return to the original position, the saw teeth 19 are meshed with the second rotating shaft 21 again, the second rotating shaft 21 can not rotate relative to the spring cylinder 18, the second latch 28 and the first latch 23 are also separated from each other, and the display screen 13 is fixed at the adjusted position.

The present invention relates to circuits and electronic components and control modules all of which are known in the art and which can be implemented completely by those skilled in the art, without undue experimentation, and without further elaboration on software and methods related thereto.