Adjustable machine table for projection of literature works
The linked design of the folding, storage, flipping and cleaning components solves the stability and cleaning issues of the projection equipment during height and angle adjustment, thereby improving the stability and service life of the equipment.
Patent Information
- Application Number
- CN202511180118.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2025-09-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing literature projection equipment has problems such as shaking, tilting, poor equipment stability when dynamically adjusting the projection angle and height, and the lens is easily damaged and inconvenient to clean.
It adopts a linkage design of folding storage components, storage flip components, lens cleaning components and pitch rotation components. The motor drives the arc-shaped rotating plate and gear rack structure to achieve stable lifting and lowering, all-round protection and efficient cleaning of the projector.
It achieves stability and accuracy of the projector during height and angle adjustment, reduces equipment loss, improves operational convenience and service life, and ensures lens cleaning effect.
Smart Images
Figure CN120667620A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field related to projection equipment, and in particular to an adjustable machine for projecting literary works. Background Art
[0002] Literary work projection equipment is a device that uses high-definition display technology, such as LED or LCD screens, to make text content clearly visible and improve the reading experience. It is specially used to display literary works. Mobile literary work projection equipment was invented to facilitate equipment in harsh environments.
[0003] In diverse application scenarios, such as document archives, mobile exhibition vehicles, and tiered classrooms, the bottom bracket of the projector needs to have the function of dynamically adjusting the projection angle and height. Currently, the height is mainly controlled by a screw lifting structure and an electric telescopic rod, supplemented by a bolt locking angle. The single-point and double-point support structure is prone to low-frequency shaking due to the lever effect when the weight and tilt angle of the equipment change, resulting in trapezoidal distortion and edge blur. The adjustment mechanism even lacks self-balancing compensation, and sudden changes in height can easily cause the center of gravity to become unstable. The bolt locking structure has weak shear resistance and is prone to displacement due to ground vibration or human collision. It is simple to adjust the elevation angle, but time-consuming and labor-intensive to adjust the depression angle. In addition, the expensive optical components in the projector are directly exposed to impact risks, and the lack of protective components will increase the probability of equipment damage. Existing liquid detergents are prone to produce water stains and ring-shaped residues when wiping the curved lens, and the adhesion of fiber debris exacerbates mirror scattering, reducing the transparency of the picture. Summary of the Invention
[0004] In order to overcome the deficiencies of the prior art, the present invention provides an adjustable platform for projecting literary works.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an adjustable machine for projecting literary works, comprising a movable bottom plate, a projector body and a base frame for fixing the projector body, a folding storage assembly for adjusting the height of the projector body is provided on the top of the movable bottom plate, the folding storage assembly comprises a fixed support sleeve, a movable support sleeve and an adjusting support sleeve, and the movable support sleeve is movably sleeved on the outer side of the fixed support sleeve, an arc-shaped rotating plate is provided inside the movable support sleeve to drive the adjusting support sleeve to expand around the outer periphery of the movable support sleeve, a storage box is fixedly installed between the top ends of the adjusting support sleeve, a storage and flipping assembly is provided inside the storage box to drive the base frame to flip, a bearing plate provided in the storage and flipping assembly fixes the base frame, and when the bearing plate moves downward in the storage box, it drives the internal protective plate to rotate, and the protective plate flips from a vertical state to a horizontal state in the storage box to protect the projector body; Lens cleaning assemblies are provided at both ends of the protective plate on the storage box. During the flipping movement of the protective plate, the rotating gear in the lens cleaning assembly is driven to rotate synchronously. The rotating gear cooperates with the rack plate to push the piston plate inside the blower. The flipping of the protective plate drives the piston plate to generate positive pressure in the blower to cooperate with the cleaning nozzle to clean the lens of the projector body. A pitch rotation assembly for adjusting the angle of the projector body is provided at the bottom of the supporting plate. The arc-shaped swinging plate provided in the pitch rotation assembly drives the base frame in the supporting plate to adjust the angle of the projector body lens.
[0006] As a preferred technical solution of the present invention, the folding storage assembly also includes a first arc-shaped folding rod and a second arc-shaped folding rod that are movable inside the movable support sleeve, and fixed support sleeves are fixedly installed at both ends of the top of the movable base plate, and a connecting rotating rod is movably connected between the two movable support sleeves, one of the movable support sleeves is fixedly installed with a folding box, and the connecting rotating rod movably passes through the folding box, and both ends of the connecting rotating rod are fixedly installed with an arc-shaped rotating plate in the movable support sleeve, and the first arc-shaped folding rod is movably connected to the bottom end of the arc-shaped rotating plate and the inner bottom of the fixed support sleeve through a hinge, and the second arc-shaped folding rod is movably connected to the top end of the arc-shaped rotating plate and the inner top of the adjusting support sleeve through a hinge, and the first arc-shaped folding rod and the second arc-shaped folding rod are both movable inside the movable support sleeve.
[0007] The connecting rotating rod is fixedly installed with a worm gear in the folding box, and the outside of the folding box is connected to a first motor through a motor box. The output end of the first motor is installed with a worm located inside the folding box through a rotating shaft, and the worm and the worm gear are movably engaged, and the adjusting support sleeve is movably sleeved on the outer periphery of the movable support sleeve.
[0008] As a preferred technical solution of the present invention, the storage flipping assembly also includes a second motor for driving the protective plate to flip, a fixed rotating rod is movably connected inside the storage box, the bottom of the protective plate is fixedly installed on the fixed rotating rod, a connecting rod is fixedly installed at the center of both ends of the protective plate, a T-shaped flip plate is fixedly installed at the center of both ends of the top of the supporting plate by bolts, and the bottom end of the connecting rod is installed at the top of the T-shaped flip plate through a rotating shaft.
[0009] The storage box is movably connected with a supporting rotating rod at one side of the bottom of the fixed rotating rod, and supporting rods are fixedly installed at both ends of the supporting rotating rod. The supporting rods are installed at the centers of both ends of the supporting plate through a rotating shaft, and the top of the supporting rod is located at the bottom of the T-shaped flip plate. The connecting rod and the supporting rod are both movable at the positions at both ends of the storage box. The outside of the storage box is fixedly installed with a second motor through a motor plate, and the output end of the second motor is fixedly installed with a first bevel gear located in the storage box through a rotating shaft. The middle end of the supporting rotating rod is fixedly installed with a second bevel gear, and the second bevel gear is movably meshed with the first bevel gear.
[0010] As a preferred technical solution of the present invention, the lens cleaning assembly also includes a limiting base plate and a protective cover. The blower is fixedly installed at the two end positions on the outside of the storage box. A protective cover is fixedly installed on the storage box at the top periphery of the blower. The two ends of the supporting rotating rod extend through the protective cover and are fixedly installed with a rotating gear. The piston plate moves inside the blower, and a piston rod is fixedly installed at the top center of the piston plate. The limiting base plate is fixedly installed on the side of the outside of the storage box. The limiting base plate is movably connected to the rack plate through a limiting slide groove, and the rack plate is movably engaged with the rotating gear.
[0011] The top end of the piston rod is fixedly mounted at the bottom end of the rack plate, an air inlet pipe and an air outlet pipe are fixedly mounted at the bottom of the blower, a dust cleaning seat is fixedly mounted on the base frame at the bottom of the lens of the projector body, and the dust cleaning nozzle is tiltedly mounted at the top of the dust cleaning seat, and the air outlet pipe is connected to the dust cleaning seat.
[0012] The top end of the U-shaped limit plate is fixedly installed on the bottom of the base frame through the first curved plate, and the top of the U-shaped limit plate is fixedly installed with the third motor, and the output end of the third motor is fixedly installed with an arc driving plate through a rotating shaft. The base frame is fixedly installed with a second arc plate at the bottom of one end away from the base rotating rod, and the bottom end of the second arc plate is installed at the top of the arc swing plate, and the arc swing plate is provided with an arc opening, and the arc swing plate is provided with arc support grooves on both sides of the arc opening. An arc swing block is slidably connected to the arc opening through the arc support groove, and the arc swing plate is movably connected to the arc swing block through a swing rotating shaft.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, during the operation of the folding storage assembly, the first motor serves as a power source to drive the arc-shaped rotating plate to perform stable and precise rotational movement. This rotational movement is efficiently transmitted through the radial hinge, synchronously driving the first arc-shaped folding rod and the second arc-shaped folding rod to perform coordinated movement. When the first arc-shaped folding rod and the second arc-shaped folding rod are gradually unfolded in the movable support sleeve, each of them assumes different force and transmission roles. The bottom end of the first arc-shaped folding rod is firmly connected to the base of the fixed support sleeve. The vertical component force generated during its unfolding process steadily pushes the movable support sleeve to move upward along the outer wall of the fixed support sleeve, while the top end of the second arc-shaped folding rod is firmly anchored at the top of the adjustable support sleeve, and its unfolding simultaneously lifts up the adjustable support sleeve. It is displaced along the outer wall of the movable support sleeve. The ingenious design of two-way constraint allows the movable support sleeve and the adjustable support sleeve to form a coaxial nested linkage relationship. Compared with the traditional single-rod structure, it can completely eliminate the influence of the deflection torque. Through this innovative design of symmetrical force flow offset and low inertia motion, the stability problem faced by precision equipment during the lifting process has been successfully overcome. During the entire height adjustment period, the equipment will not shake or tilt at all, and the adjustment process is smooth, stable and reliable. This not only ensures the safety of precision equipment during the lifting process, but also improves the accuracy of operation, while also reducing the loss to the equipment that may be caused by shaking and tilting, reflecting the outstanding performance of this design in functionality, stability and protection.
[0014] 2. In the present invention, the projector body on the base frame is smoothly lowered by the carrying plate in the storage flip assembly and accurately enters the interior of the storage box. At the same time, the protective plate begins to rotate in an orderly manner with the fixed rotation axis as the center, gradually transitioning from an initial vertical state to a horizontal state. The projector body slowly moves from the side of the protective plate to its bottom position along a preset trajectory, achieving a precise conversion of spatial position. The supporting rod also synchronously completes the motion conversion, switching from the original downward supporting state to a downward fixed state, further enhancing the stability of the overall structure. The protective plate and the storage box form a closed protective space. The protective plate provides top protection for the projector body with its solid structure, which can effectively block external dust, water droplets and accidental collisions.
[0015] 3. In the present invention, the storage box in the storage flip assembly wraps the projector in all directions from all sides and bottom, avoiding shaking and bumping that may occur during transportation or storage. This not only enables convenient storage of the projector, but also ensures the stability of the storage process and the strictness of protection through the coordinated operation of various components, greatly reducing the risk of equipment damage due to external factors and extending the service life of the projector. Moreover, the entire operation process is coherent and smooth, reflecting the humanization and practicality of the design.
[0016] 4. In the present invention, the rotation of the gear of the lens cleaning assembly will pull the rack plate to move. Under this linkage action, the rack plate descends steadily along the preset trajectory. Through the rigid connection of the piston plate, the movement of the rack plate is synchronously transmitted to the piston structure inside the blower, prompting the piston plate to complete a precise downward movement in the cylinder. As the piston plate moves downward, the internal space of the blower is compressed to form a stable positive pressure, and the air flow is quickly transported to the cleaning seat through the air outlet pipe. The cleaning seat serves as an air flow distribution hub, uniformly directing the high-pressure gas to multiple cleaning nozzles, and the nozzles form a circular motion at a specific angle. The shaped air jet can completely blow away the dust attached to the surface of the projector lens. This design can effectively remove dust from hidden locations such as the edge gap of the lens, avoiding scratches on the lens that may be caused by traditional wiping methods. The meshing accuracy of the gear and rack ensures that the movement stroke of the piston plate is controllable, so that the blast pressure remains stable. Neither the lens coating will be damaged due to excessive pressure, nor the cleaning effect will be affected due to insufficient pressure. The linkage structure of the whole set of components is compact and runs smoothly. It can be used with the angle adjustment function of the projector to achieve synchronous maintenance, which greatly improves the convenience of use and maintenance efficiency of the equipment.
[0017] 5. In the present invention, through the precise linkage of the pitch and tilt rotation components, the arc-shaped swing plate performs smooth tilting motion with the base rotating rod as the core fulcrum. This process directly drives the projector body to complete the precise lowering of the angle. The dual structure achieves excellent stability: the arc-shaped swing block and the arc-shaped opening form a strict interlocking relationship, which meshes precisely like gears, eliminating the possibility of lateral displacement; at the same time, a solid supporting structure is constructed between the arc-shaped swing block and the arc-shaped support groove, providing reliable support for longitudinal force.
[0018] 6. In the present invention, the pitch rotation assembly is used to ensure that the projector body always maintains a stable posture when the angle is adjusted. It will not shake due to external interference, nor will it tilt, deflect, or swing excessively. Even after frequent adjustments or long-term use, the matching accuracy of each component can still be effectively guaranteed, ensuring that the projector is always at the preset optimal projection angle, providing a solid mechanical foundation for picture presentation, reducing the probability of wear between components, extending the service life of the equipment, and embodying the perfect combination of functionality and durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the storage box of the present invention; Figure 3 Schematic diagram of the structure of the worm gear of the present invention; Figure 4 This is a schematic structural diagram of the connecting rod of the present invention; Figure 5 Schematic diagram of the structure of the arc-shaped rotating plate of the present invention; Figure 6 Schematic diagram of the structure of the connecting rod of the present invention; Figure 7 This is a schematic structural diagram of the supporting rotating rod of the present invention; Figure 8 It is a structural schematic diagram of the supporting rod of the present invention; Figure 9 This is a schematic structural diagram of the T-shaped flip plate of the present invention; Figure 10 This is a schematic diagram of the structure inside the protective cover of the present invention; Figure 11 It is a structural schematic diagram of the arc-shaped swing plate of the present invention.
[0020] Among them: 10, movable bottom plate; 11, fixed support sleeve; 12, movable support sleeve; 13, adjustable support sleeve; 14, base frame; 15, projector body; 16, dust cleaning seat; 17, dust cleaning nozzle; 20, folding box; 21, first arc folding rod; 22, second arc folding rod; 23, arc rotating plate; 24, connecting rod; 25, first motor; 26, worm gear; 27, worm; 30, storage box; 31, protective plate; 32, second motor; 33, fixed rod; 34, connecting rod; 35, T-shaped flip plate; 36, supporting rod; 37, supporting rod; 38 , first bevel gear; 39, second bevel gear; 40, bearing plate; 41, base rotating rod; 42, connecting plate; 43, first arc plate; 44, U-shaped limiting plate; 45, third motor; 46, arc driving plate; 47, second arc plate; 48, swinging shaft; 50, blower; 51, rotating gear; 52, piston plate; 53, limiting bottom plate; 54, protective cover; 55, piston rod; 56, air inlet pipe; 57, air outlet pipe; 58, rack plate; 59, limiting slide groove; 60, arc swing plate; 61, arc opening; 62, arc support groove; 63, arc swing block. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the embodiments, other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.
[0022] Example: Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, it includes a movable base plate 10, a projector body 15 and a base frame 14 for fixing the projector body 15. A folding storage assembly for adjusting the height of the projector body 15 is provided on the top of the movable base plate 10. The folding storage assembly includes a fixed support sleeve 11, a movable support sleeve 12 and an adjustable support sleeve 13. The movable support sleeve 12 is movably connected to the outside of the fixed support sleeve 11. An arc-shaped rotating plate 23 is provided inside the movable support sleeve 12 to drive the adjustable support sleeve 13 to expand around the outer periphery of the movable support sleeve 12. A storage box 30 is fixedly installed between the top ends of the adjustable support sleeves 13.
[0023] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The folding storage assembly also includes a first arc-shaped folding rod 21 and a second arc-shaped folding rod 22 that are movable inside the movable support sleeve 12. Fixed support sleeves 11 are fixedly installed at both ends of the top of the movable base plate 10. Walking wheels and supporting feet are also installed around the bottom of the movable base plate 10 to achieve movement and fixed support. A connecting rod 24 is movably connected between the two movable support sleeves 12. A folding box 20 is fixedly installed on one of the movable support sleeves 12. The connecting rod 24 movably penetrates the folding box 20. Both ends of the connecting rod 24 are fixedly installed in the movable support sleeve 12. An arc-shaped rotating plate 23 is provided, and a first arc-shaped folding rod 21 is movably connected between the bottom end of the arc-shaped rotating plate 23 and the inner bottom of the fixed support sleeve 11 through a hinge, and a second arc-shaped folding rod 22 is movably connected between the top end of the arc-shaped rotating plate 23 and the inner top of the adjusting support sleeve 13 through a hinge, and the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 both move inside the movable support sleeve 12. During the entire deployment process, the adjusting support sleeve 13 moves on the outer periphery of the movable support sleeve 12, and the movable support sleeve 12 moves on the outer periphery of the fixed support sleeve 11.
[0024] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The connecting rod 24 is fixedly installed with a worm gear 26 in the folding box 20, and the outside of the folding box 20 is connected to a first motor 25 through a motor box. The output end of the first motor 25 is installed with a worm 27 located inside the folding box 20 through a rotating shaft, and the worm 27 is movably engaged with the worm gear 26. The adjusting support sleeve 13 is movably sleeved on the outer periphery of the movable support sleeve 12, and the fixed support sleeve 11, the movable support sleeve 12 and the adjusting support sleeve 13 are all arc-shaped structures and hollow socket plates. The first arc-shaped folding rod 21 is used to push the movable support sleeve 12, and then the second arc-shaped folding rod 22 is used to push the adjusting support sleeve 13 to realize the ring-shaped sleeve expansion.
[0025] See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the worm 27 inside the folding box 20 is driven by the first motor 25 to rotate, and the rotation engagement of the worm 27 drives the connecting rod 24 on the worm gear 26 to rotate synchronously, and the connecting rod 24 drives the arc-shaped rotating plate 23 inside the movable support sleeve 12 to rotate during the rotation movement. When the arc-shaped rotating plate 23 rotates, it drives the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 to rotate through the hinge, so that the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 can realize the unfolding movement inside the movable support sleeve 12. At this time, the bottom end of the first arc-shaped folding rod 21 is fixedly installed with the bottom of the fixed support sleeve 11, so that the first arc-shaped folding rod 21 supports the movable support sleeve 12 to rise around the outer periphery of the fixed support sleeve 11 when it is rotated and unfolded. Similarly, the top end of the second arc-shaped folding rod 22 is fixedly installed with the top of the adjusting support sleeve 13, so that the second arc-shaped folding rod 22 supports the adjusting support sleeve 13 to rise around the outer periphery of the movable support sleeve 12 when it is rotated and unfolded; See Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 That is to say, when the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 are unfolded under the rotation drive of the arc-shaped rotating plate 23, the movable support sleeve 12 and the adjustable support sleeve 13 will unfold at the top of the fixed support sleeve 11, realizing the ring-shaped connecting movement between the adjustable support sleeve 13, the movable support sleeve 12 and the fixed support bar. Similarly, when the arc-shaped rotating plate 23 rotates in the opposite direction, the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 retract, thereby adjusting the height of the projector body 15 to be lowered. During the entire adjustment process, the height of the projector body 15 is stably adjusted, and no shaking or tilting will occur during the height adjustment process, so that the projector body 15 is very smooth and stable during the height adjustment process.
[0026] See Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10The storage box 30 is provided with a storage flip assembly that drives the base frame 14 to flip. The supporting plate 40 provided in the storage flip assembly fixes the base frame 14. When the supporting plate 40 moves downward in the storage box 30, it drives the internal protective plate 31 to rotate. The protective plate 31 flips from a vertical state to a horizontal state in the storage box 30 to protect the projector body 15. The storage flip assembly also includes a second motor 32 that drives the protective plate 31 to flip. A fixed rotating rod 33 is movably connected to the storage box 30. The bottom of the protective plate 31 It is fixedly installed on the fixed rotating rod 33, and the connecting rod 34 is fixedly installed at the center of both ends of the protective plate 31. The T-shaped flip plate 35 is fixedly installed at the center of both ends of the top of the supporting plate 40 by bolts, and the bottom end of the connecting rod 34 is installed at the top of the T-shaped flip plate 35 through a rotating shaft. When the protective plate 31 is in a vertical state, the supporting plate 40 and the protective plate 31 are supported against each other, and when the protective plate 31 is in a horizontal state, the supporting plate 40 and the inner wall of the storage box 30 are supported against each other, and the entire supporting plate 40 realizes lifting and lowering movement in the storage box 30, while the protective plate 31 flips.
[0027] See Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 The top of the supporting rod 37 is located at the bottom of the T-shaped flip plate 35, and the connecting rod 34 and the supporting rod 37 are both movable at the positions at both ends of the storage box 30. The supporting rod 37 is used to support the top and tighten the bottom of the loading plate 40. The outside of the storage box 30 is fixedly installed with a second motor 32 through a motor plate, and the output end of the second motor 32 is fixedly installed with a first bevel gear 38 located inside the storage box 30 through a rotating shaft. A second bevel gear 39 is fixedly installed at the middle end of the supporting rod 36, and the second bevel gear 39 is movably engaged with the first bevel gear 38, and the protective plate 31 is driven to move by the second motor 32, thereby adjusting the state of the loading plate 40.
[0028] See Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10When the projector body 15 is finished using, the supporting rotating rod 36 is driven by the second motor 32 to rotate, and the supporting rotating rod 36 drives the supporting rod 37 to rotate synchronously, and the protective plate 31 will flip around the fixed rotating rod 33. During the flipping movement, the connecting rods 34 at both ends of the protective plate 31 cooperate with the T-shaped flip plate 35 to drive the carrying plate 40 to achieve stable downward movement under the support of the supporting rod 37. At this time, the carrying plate 40 carries the projector body 15 on the base frame 14 down into the interior of the storage box 30. At the same time, the protective plate 31 rotates around the fixed rotating shaft as the center of the circle. The protective plate 31 will move from a vertical state to a horizontal state, and the projector body 15 moves from the side of the protective plate 31 to the bottom of the protective plate 31. At the same time, the supporting rod 37 changes from downward supporting movement to downward fixing, and the protective plate 31 cooperates with the storage box 30 to store and protect the projector body 15.
[0029] See Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , a lens cleaning assembly is provided at both ends of the protective plate 31 on the storage box 30. During the flipping movement of the protective plate 31, the rotating gear 51 in the lens cleaning assembly is driven to rotate synchronously. The rotating gear 51 cooperates with the rack plate 58 to push the piston plate 52 inside the blower 50. The protective plate 31 flips and drives the piston plate 52 to generate positive pressure in the blower 50 to cooperate with the cleaning nozzle 17 to clean the lens of the projector body 15. The lens cleaning assembly also includes a limited bottom plate 53 and a protective cover 54. The blower 50 is fixedly mounted on At both ends of the outside of the storage box 30, a protective cover 54 is fixedly installed on the storage box 30 at the top periphery of the blower 50. Both ends of the supporting rotating rod 36 extend through the protective cover 54 and are fixedly installed with a rotating gear 51. The piston plate 52 moves inside the blower 50, and a piston rod 55 is fixedly installed at the top center of the piston plate 52. A limiting bottom plate 53 is fixedly installed on the side of the outside of the storage box 30. The limiting bottom plate 53 is movably connected to the rack plate 58 through a limiting slide groove 59, and the rack plate 58 is movably engaged with the rotating gear 51.
[0030] See Figure 7 、 Figure 8 、 Figure 9 and Figure 10The top end of the piston rod 55 is fixedly mounted at the bottom end of the rack plate 58, and an air inlet pipe 56 and an air outlet pipe 57 are fixedly mounted at the bottom of the blower 50. Both the air inlet pipe 56 and the air outlet pipe 57 are provided with a one-way valve. The one-way valve on the air inlet pipe 56 ensures that the air in the blower 50 is filled with air in one direction, and the one-way valve on the air outlet pipe 57 ensures that the blower 50 compresses air to the cleaning seat 16. A cleaning seat 16 is fixedly mounted on the base frame 14 at the bottom of the lens of the projector body 15, and the cleaning nozzle 17 is tiltedly mounted at the top of the cleaning seat 16, and the air outlet pipe 57 is connected to the cleaning seat 16, and the angle of the cleaning nozzle 17 is aligned with the bottom of the lens of the projector body 15.
[0031] See Figure 7 、 Figure 8 、 Figure 9 and Figure 10 When the projector body 15 is stored and drives the support rotating rod 36 to rotate, it will also drive the rotating gear 51 inside the protective cover 54 to rotate. The rotating gear 51 engages the rack plate 58 on the limiting bottom plate 53 to move, causing the rack plate 58 to move upward. At this time, the rack plate 58 drives the piston plate 52 inside the blower cylinder 50 to move upward synchronously through the piston rod 55. The piston plate 52 will generate negative pressure inside the blower cylinder 50, and the inside of the blower cylinder 50 is filled with air through the air inlet pipe 56. When the projector body 15 is in use, similarly, the protective plate 31 is driven by the reverse rotation of the second motor 32. The horizontal state moves to the vertical state, and synchronously, the supporting plate 40 moves upward, driving the projector body 15 in the base frame 14 to reach the top of the storage box 30, so as to realize the projection and viewing of literary works. During this movement, the rotating gear 51 will also drive the rack plate 58 to move in the opposite direction, and the rack plate 58 will move downward. The rack plate 58 drives the piston plate 52 in the blower 50 to descend synchronously through the piston plate 52. The piston plate 52 generates positive pressure inside the blower 50, and the compressed air is blown through the dust cleaning seat 16 and the dust cleaning nozzle 17 through the air outlet pipe 57 to clean the dust falling on the lens of the projector body 15.
[0032] See Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11, a pitch rotation assembly for adjusting the angle of the projector body 15 is provided at the bottom of the supporting plate 40, and the arc-shaped swinging plate 60 provided with the pitch rotation assembly drives the base frame 14 to swing up and down in the supporting plate 40 to adjust the pitch angle of the projector body 15 lens. The pitch rotation assembly also includes a base rotating rod 41 and a third motor 45. The supporting plate 40 is a U-shaped structure. The supporting plate 40 is movably connected to the bottom of one end near the blower 50 with the base rotating rod 41. A connecting plate 42 is fixedly installed at the middle end of the base rotating rod 41. The top ends of the connecting plate 42 are mounted on the bottom of the base frame 14 through a first arc plate 43. The bottom of the supporting plate 40 is fixedly installed A U-shaped limit plate 44 is installed, and a third motor 45 is fixedly installed on the top of the U-shaped limit plate 44. An arc-shaped driving plate 46 is fixedly installed on the output end of the third motor 45 through a rotating shaft. A second arc plate 47 is fixedly installed on the bottom of the base frame 14 at the end away from the base rotating rod 41. The bottom end of the second arc plate 47 is installed at the top of the arc-shaped swinging plate 60. The arc-shaped swinging plate 60 has an arc-shaped opening 61. The arc-shaped swinging plate 60 has arc-shaped supporting grooves 62 on both sides of the arc-shaped opening 61. The inside of the arc-shaped opening 61 is slidably connected with an arc-shaped swing block 63 through the arc-shaped supporting groove 62. The arc-shaped swinging plate 60 is movably connected to the arc-shaped swing block 63 through a swinging rotating shaft 48.
[0033] See Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11 The arc driving plate 46 is driven to move by the third motor 45. When the arc driving plate 46 rotates upward, the arc driving plate 46 drives the arc swing block 63 to rotate synchronously through the swing shaft 48. At this time, the arc swing block 63 will move in the arc opening 61 of the arc swing plate 60 through the arc support groove 62. The arc swing block 63 moves from the two ends of the arc opening 61 to the middle end. At this time, the arc driving plate 46 will drive the arc swing plate 60 to move upward, and the arc swing plate 60 will drive the base frame 14 to rotate between the connecting plate 42 and the first arc plate 43 through the second arc plate 47. When the connection is made, the arc-shaped driving plate 46 rotates around the base rotating rod 41, and the angle of the projector body 15 is raised. Similarly, when the arc-shaped driving plate 46 moves downward, the arc-shaped swing plate 60 tilts around the base rotating rod 41, and the angle of the projector body 15 is lowered, thereby achieving a stable adjustment of the pitch angle of the projector body 15 in the base frame 14. Due to the cooperation between the arc-shaped swing block 63 and the arc-shaped opening 61 and the support of the arc-shaped swing block 63 and the arc-shaped support groove 62, the projector body 15 will not shake, tilt or swing during the adjustment process.
[0034] Working principle: The projector body 15 is moved and fixed by moving the walking wheels under the base plate 10 in conjunction with the supporting feet. When the height of the projector body 15 needs to be adjusted, the worm 27 inside the folding box 20 is driven by the first motor 25 to rotate. The rotation engagement of the worm 27 drives the connecting rod 24 on the worm gear 26 to rotate synchronously. The connecting rod 24 drives the arc-shaped rotating plate 23 inside the movable support sleeve 12 to rotate during the rotation. When the arc-shaped rotating plate 23 rotates, it drives the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 to rotate through the hinge, so that the first arc-shaped folding rod 21 and the second arc-shaped folding rod 22 can realize the expansion movement inside the movable support sleeve 12. At this time, the bottom end of the first arc-shaped folding rod 21 is fixedly installed on the bottom of the fixed support sleeve 11, so that the first arc-shaped folding rod 21 supports the movable support sleeve 12 to rise on the periphery of the fixed support sleeve 11 when it rotates and expands. Similarly, the second arc-shaped folding rod 21 When the first and second curved folding rods 21 and 22 are rotated and extended, the movable support sleeve 12 and the adjusting support sleeve 13 are supported and moved upward on the outer periphery of the movable support sleeve 12. That is, when the first and second curved folding rods 21 and 22 are extended under the rotation drive of the curved rotating plate 23, the movable support sleeve 12 and the adjusting support sleeve 13 will extend at the top of the fixed support sleeve 11, realizing the ring-shaped connection movement between the adjusting support sleeve 13, the movable support sleeve 12 and the fixed support bar. Similarly, when the curved rotating plate 23 rotates in the opposite direction, the first and second curved folding rods 21 and 22 are retracted, thereby adjusting the height of the projector body 15 to be lowered. During the entire adjustment process, the height of the projector body 15 is stably adjusted, and no shaking or tilting will occur during the height adjustment process, so that the projector body 15 is very smooth and stable during the height adjustment process.
[0035] When the projector body 15 is finished using, the second motor 32 drives the support rod 36 to rotate, and the support rod 36 drives the supporting rod 37 to rotate synchronously, and the protective plate 31 will flip around the fixed rod 33. During the flipping movement, the connecting rods 34 at both ends of the protective plate 31 cooperate with the T-shaped flip plate 35 to drive the supporting plate 40 to achieve a stable downward movement under the support of the supporting rod 37. At this time, the supporting plate 40 and the projector body 15 on the base frame 14 are lowered into the storage box 30. At the same time, the protective plate 31 rotates around the fixed shaft, and the protective plate 31 moves from a vertical state to a horizontal state. The projector body 15 moves from the side of the protective plate 31 to the bottom of the protective plate 31. At the same time, the supporting rod 37 moves from downward support to downward fixation. The protective plate 31 cooperates with the storage box 30 to store and protect the projector body 15. At the same time, it can also prevent the projector body 15 from being contaminated by external dust or damaged by impact from foreign objects when not in use, thereby extending the service life of the projector body 15 and ensuring property safety. In addition, when the projector body 15 is stored and drives the support rotating rod 36 to rotate, it will also drive the rotating gear 51 inside the protective cover 54 to rotate. The rotating gear 51 engages the rack plate 58 on the limiting bottom plate 53 to move, causing the rack plate 58 to move upward. At this time, the rack plate 58 drives the piston plate 52 inside the blower cylinder 50 to move upward synchronously through the piston rod 55. The piston plate 52 will generate negative pressure inside the blower cylinder 50, and the inside of the blower cylinder 50 will be filled with air through the air inlet pipe 56. When the projector body 15 is in use, similarly, the protective plate 31 is driven to move from a horizontal state to a vertical state through the reverse rotation of the second motor 32, and synchronously, the supporting plate 40 moves upward. , driving the projector body 15 in the base frame 14 to the top of the storage box 30 to realize the projection and viewing of literary works. During this movement, the rotating gear 51 will also drive the rack plate 58 to move in the opposite direction, and the rack plate 58 will move downward. The rack plate 58 drives the piston plate 52 in the blower cylinder 50 to synchronously descend through the piston plate 52. The piston plate 52 generates positive pressure inside the blower cylinder 50, and the compressed air is blown through the air outlet pipe 57 through the dust cleaning seat 16 and the dust cleaning nozzle 17 to blow and clean the dust falling on the lens of the projector body 15. The dust adhering to the lens is thoroughly and comprehensively cleaned by air cleaning, which effectively avoids incomplete cleaning of the cleaning water and the contamination of the subsequent viewing image quality by residual water.
[0036] When the lens angle of the projector body 15 needs to be adjusted when watching literary works, the arc driving plate 46 is driven to move by the third motor 45. When the arc driving plate 46 rotates upward, the arc driving plate 46 drives the arc swing block 63 to rotate synchronously through the swing shaft 48. At this time, the arc swing block 63 will move in the arc opening 61 of the arc swing plate 60 through the arc support groove 62. The arc swing block 63 moves from the two ends of the arc opening 61 to the middle end. At this time, the arc driving plate 46 will drive the arc swing plate 60 to move upward, and the arc swing plate 60 will drive the base frame 14 to rotate between the connecting plate 42 and the first through the second arc plate 47. The arc plate 43 rotates around the base rotating rod 41 under the connection, and the angle of the projector body 15 will be raised. Similarly, when the arc driving plate 46 moves downward, the arc swing plate 60 will tilt around the base rotating rod 41, and the angle of the projector body 15 will be lowered, thereby achieving a stable adjustment of the pitch angle of the projector body 15 in the base frame 14. Due to the cooperation between the arc swing block 63 and the arc opening 61 and the support of the arc swing block 63 and the arc support groove 62, the projector body 15 will not shake, tilt or swing during the adjustment process, thereby improving the viewing comfort of literary works.
[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. An adjustable platform for projecting literary works, comprising a movable base plate, a projector body, and a base frame for fixing the projector body, characterized in that: The top of the movable base plate is provided with a folding storage assembly for adjusting the height of the projector body, the folding storage assembly includes a fixed support sleeve, a movable support sleeve and an adjusting support sleeve, and the movable support sleeve is movably connected to the outer side of the fixed support sleeve, and an arc-shaped rotating plate is provided inside the movable support sleeve to drive the adjusting support sleeve to expand around the outer periphery of the movable support sleeve, and a storage box is fixedly installed between the top ends of the adjusting support sleeve, and a storage and flipping assembly is provided inside the storage box to drive the base frame to flip. The bearing plate provided in the storage and flipping assembly fixes the base frame, and when the bearing plate moves downward in the storage box, it drives the internal protective plate to rotate, and the protective plate flips from a vertical state to a horizontal state in the storage box to protect the projector body; Lens cleaning assemblies are provided at both ends of the protective plate on the storage box. During the flipping movement of the protective plate, the rotating gear in the lens cleaning assembly is driven to rotate synchronously. The rotating gear cooperates with the rack plate to push the piston plate inside the blower. The flipping of the protective plate drives the piston plate to generate positive pressure in the blower to cooperate with the cleaning nozzle to clean the lens of the projector body. A pitch rotation assembly for adjusting the angle of the projector body is provided at the bottom of the supporting plate. The arc-shaped swinging plate provided in the pitch rotation assembly drives the base frame in the supporting plate to adjust the angle of the projector body lens.
2. The adjustable machine for showing literary works according to claim 1, characterized in that: The folding storage assembly also includes a first arc folding rod and a second arc folding rod that are movable inside the movable support sleeve, and fixed support sleeves are fixedly installed at both ends of the top of the movable base plate, and a connecting rotating rod is movably connected between the two movable support sleeves, one of the movable support sleeves is fixedly installed with a folding box, and the connecting rotating rod movably passes through the folding box, and both ends of the connecting rotating rod are fixedly installed with an arc rotating plate in the movable support sleeve, and the first arc folding rod is movably connected to the inner bottom of the fixed support sleeve by a hinge between one end of the bottom of the arc rotating plate and the inner bottom of the fixed support sleeve, and the second arc folding rod is movably connected to the top of the adjusting support sleeve by a hinge, and the first arc folding rod and the second arc folding rod are both movable inside the movable support sleeve.
3. The adjustable machine for showing literary works according to claim 2, characterized in that: The connecting rotating rod is fixedly installed with a worm gear in the folding box, and the outside of the folding box is connected to a first motor through a motor box. The output end of the first motor is installed with a worm located inside the folding box through a rotating shaft, and the worm and the worm gear are movably engaged, and the adjusting support sleeve is movably sleeved on the outer periphery of the movable support sleeve.
4. The adjustable machine for projecting literary works according to claim 1, characterized in that: The storage flipping assembly also includes a second motor that drives the protective plate to flip. A fixed rotating rod is movably connected inside the storage box. The bottom of the protective plate is fixedly installed on the fixed rotating rod. A connecting rod is fixedly installed at the center of both ends of the protective plate. A T-shaped flip plate is fixedly installed at the center of both ends of the top of the supporting plate by bolts, and the bottom end of the connecting rod is installed at the top of the T-shaped flip plate through a rotating shaft.
5. The adjustable platform for projecting literary works according to claim 4, characterized in that: The storage box is movably connected with a supporting rotating rod at one side of the bottom of the fixed rotating rod, and supporting rods are fixedly installed at both ends of the supporting rotating rod. The supporting rods are installed at the centers of both ends of the supporting plate through a rotating shaft, and the top of the supporting rod is located at the bottom of the T-shaped flip plate. The connecting rod and the supporting rod are both movable at the positions at both ends of the storage box. The outside of the storage box is fixedly installed with a second motor through a motor plate, and the output end of the second motor is fixedly installed with a first bevel gear located in the storage box through a rotating shaft. The middle end of the supporting rotating rod is fixedly installed with a second bevel gear, and the second bevel gear is movably meshed with the first bevel gear.
6. The adjustable platform for projecting literary works according to claim 5, characterized in that: The lens cleaning assembly also includes a limiting base plate and a protective cover. The blower is fixedly installed at both ends of the outside of the storage box. A protective cover is fixedly installed on the storage box at the top periphery of the blower. Both ends of the supporting rotating rod extend through the protective cover and are fixedly installed with a rotating gear. The piston plate moves inside the blower, and a piston rod is fixedly installed at the top center of the piston plate. The limiting base plate is fixedly installed on the side of the outside of the storage box. The limiting base plate is movably connected to the rack plate through a limiting slide groove, and the rack plate is movably engaged with the rotating gear.
7. The adjustable machine for projecting literary works according to claim 6, characterized in that: The top end of the piston rod is fixedly mounted at the bottom end of the rack plate, an air inlet pipe and an air outlet pipe are fixedly mounted at the bottom of the blower, a dust cleaning seat is fixedly mounted on the base frame at the bottom of the lens of the projector body, and the dust cleaning nozzle is tiltedly mounted at the top of the dust cleaning seat, and the air outlet pipe is connected to the dust cleaning seat.
8. The adjustable platform for projecting literary works according to claim 1, characterized in that: The bottom end of the U-shaped limit plate is fixedly installed with a U-shaped stop plate, and the top of the U-shaped limit plate is fixedly installed with a third motor, and the output end of the third motor is fixedly installed with an arc driving plate through a rotating shaft. The base frame is fixedly installed with a second arc plate at the bottom end away from the base rotating rod, and the bottom end of the second arc plate is installed at the top of the arc swing plate, and the arc swing plate is provided with an arc opening, and the arc swing plate is provided with arc support grooves on both sides of the arc opening. An arc swing block is slidably connected to the arc opening through the arc support groove, and the arc swing plate is movably connected to the arc swing block through a swing rotating shaft.