Displacement compensation electric telescopic table for projection equipment

Abstract

The utility model discloses a displacement compensation electric telescopic table for projection equipment, relates to the technical field of projection auxiliary devices, and aims to solve the problems that the angle and position of a projection picture deviate due to the fact that a current displacement compensation electric telescopic table is downwards sunken and deformed under the influence of the dead weight of the projection equipment; the projection device comprises a base and a cover plate detachably installed on the top of the base, an installation platform is arranged on the cover plate in a sliding mode, and a lead screw driving mechanism is arranged in the middle of the interior of the base. A guide groove allowing the middle stabilizing mechanism to be arranged in a sliding mode is formed in the center of the top end of the cover plate, and the middle stabilizing mechanism comprises a movable base. According to the utility model, the middle support and the two side supports can keep the surface flat when the mounting platform is influenced by the dead weight of the projection equipment, so that the mounting effect of the equipment is kept, and a projection picture is accurately projected in a target area.

Description

Technical Field

[0001] The utility model relates to the technical field of projection auxiliary devices, and more particularly to an electric telescopic table for displacement compensation of projection equipment. Background Art

[0002] The Projector Displacement Compensation Electric Telescopic Stage is an auxiliary device for projection equipment. Its primary function is to precisely compensate for the projector's position by electrically extending and retracting it. When the projector is inaccurately installed, experiences displacement (such as minor vibration), or requires adjustment of the projected image's angle or position, the stage can move the projector within a certain range, ensuring the projection image is accurately projected onto the target area.

[0003] However, existing displacement-compensating electric telescopic platforms, when supporting projection equipment for displacement compensation, experience a downward concave deformation in the middle of the platform due to the weight of the projection equipment. This long-term deformation can easily cause the platform surface to lose its flat mounting surface, even compromising the installation of the projection equipment. This can lead to deviations in the angle and position of the projected image, preventing the image from being accurately projected onto the target area. In light of this, we propose a displacement-compensating electric telescopic platform for projection equipment. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology, meet the actual needs, and provide a projection equipment displacement compensation electric telescopic table to solve the technical problem that the current displacement compensation electric telescopic table is affected by the weight of the projection equipment and produces a concave deformation downward, resulting in deviations in the angle and position of the projection image, making it impossible to accurately project the projection image on the target area.

[0005] In order to solve the above technical problems, the present utility model provides the following technical solutions: an electric telescopic table for displacement compensation of projection equipment, comprising a base and a cover detachably mounted on the top of the base;

[0006] A mounting platform is slidably provided on the cover plate, a screw drive mechanism is centrally provided in the base, and a guide groove for slidingly providing a central stabilizing mechanism is centrally provided at the top end of the cover plate;

[0007] The central stabilization mechanism includes a movable seat, and the bottom ends of both sides of the movable seat are rotatably installed with rubber support wheels, and the two rubber support wheels are both rollingly arranged on the bottom of the base. A T-shaped seat fixedly connected to the mounting platform is constructed at the center of the top end of the movable seat, and the T-shaped seat is slidably arranged in the guide groove.

[0008] The utility model drives the movable seat provided with a T-shaped seat to move through a screw drive mechanism, thereby driving the installation platform to move horizontally, thereby completing the displacement compensation of the projection equipment. During the compensation process, the two rubber support wheels provided on the movable seat cooperate with the movable seat provided with the T-shaped seat to provide support for the middle part of the installation platform, so that the surface of the installation platform remains flat when it is affected by the dead weight of the projection equipment, thereby maintaining the installation effect of the equipment, and then accurately projecting the projection picture on the target area.

[0009] Preferably, the screw drive mechanism includes a support seat and a servo motor, the support seat is fixedly arranged on one side of the bottom of the base, and a screw body is rotatably arranged between the support seat and one side of the base.

[0010] Preferably, a pulley B is fixedly mounted on one end of the motor shaft of the servo motor, a pulley A is fixedly mounted on one end of the screw body facing the servo motor, and a transmission belt is mounted on both the pulley A and the pulley B.

[0011] Preferably, an inner thread seat is fixedly provided inside the movable seat, and the inner thread seat is threadedly mounted on the screw rod body.

[0012] Preferably, guide seats are fixedly provided on both sides of the mounting platform, and a plurality of guide wheels are equidistantly rotatably provided at one end of both sides of the base, and the plurality of guide wheels on the same side roll together in the guide seat.

[0013] Preferably, two infrared limit sensors are symmetrically arranged on one side of the base, and a shielding arm cooperating with the two infrared limit sensors is constructed on one side of the movable seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model drives the movable seat with a T-shaped seat to move through a screw drive mechanism, thereby driving the installation platform to move horizontally, thereby completing the displacement compensation of the projection equipment. During the compensation process, the two rubber support wheels provided on the movable seat cooperate with the movable seat with a T-shaped seat to provide support for the middle part of the installation platform, so that the surface of the installation platform remains flat when it is affected by the deadweight of the projection equipment, thereby maintaining the installation effect of the equipment, and then accurately projecting the projection image on the target area.

[0016] 2. The utility model also adopts the arrangement of a screw drive mechanism and a central stabilizing mechanism, and drives the screw body to rotate through a servo motor. The screw body with spiral rotation drives the movable seat with an inner screw seat to move with the help of two rubber support wheels, thereby driving the movement of the installation platform, greatly improving the stability of the forward movement, thereby further improving the accuracy of the projection of the projected image. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model in an extended state;

[0019] Figure 3 This is a schematic diagram of the structure of the utility model in a disassembled state;

[0020] Figure 4 It is a structural schematic diagram of the middle screw drive mechanism and the middle stabilizing mechanism of the utility model in a coordinated state.

[0021] Description of the numbers in the figure:

[0022] 1. Base; 101. Guide wheel; 2. Cover plate; 201. Guide groove; 3. Mounting platform; 301. Guide seat; 4. Screw drive mechanism; 401. Support seat; 402. Servo motor; 403. Screw body; 404. Pulley A; 405. Pulley B; 406. Drive belt; 5. Central stabilizing mechanism; 501. Movable seat; 502. Inner wire seat; 503. T-shaped seat; 504. Rubber support wheel; 505. Shielding arm; 6. Infrared limit sensor. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, the utility model relates to an electric telescopic table for displacement compensation of projection equipment, comprising a base 1 and a cover 2 detachably mounted on the top of the base 1, and two infrared limit sensors 6 are symmetrically arranged on one side of the base 1;

[0024] A mounting platform 3 is slidably provided on the cover plate 2, a screw drive mechanism 4 is centrally provided in the base 1, and a guide groove 201 for the sliding arrangement of the middle stabilizing mechanism 5 is provided in the center of the top end of the cover plate 2;

[0025] In the embodiment of the present utility model, the central stabilizing mechanism 5 includes a movable seat 501, one side of the movable seat 501 is constructed with a shielding arm 505 that cooperates with two infrared limit sensors 6, the bottom ends of both sides of the movable seat 501 are rotatably installed with rubber support wheels 504, and the two rubber support wheels 504 are both rollingly arranged at the bottom of the base 1, a T-shaped seat 503 fixedly connected to the mounting platform 3 is constructed at the top center of the movable seat 501, and the T-shaped seat 503 is slidably arranged in the guide groove 201, an inner wire seat 502 is fixedly arranged in the movable seat 501, and the inner wire seat 502 is threaded The movable seat 501 with a T-shaped seat 503 is installed on the screw body 403, and the screw drive mechanism 4 drives the movable seat 501 with a T-shaped seat 503 to move, thereby driving the installation platform 3 to move horizontally, thereby completing the displacement compensation of the projection equipment. During the compensation process, the two rubber support wheels 504 provided on the movable seat 501 cooperate with the movable seat 501 with a T-shaped seat 503 to provide support for the middle part of the installation platform 3, so that the surface of the installation platform 3 remains flat when it is affected by the dead weight of the projection equipment, thereby maintaining the installation effect of the equipment, and then the projection picture is accurately projected on the target area.

[0026] In an embodiment of the present utility model, the screw drive mechanism 4 includes a support seat 401 and a servo motor 402. The support seat 401 is fixedly arranged on one side of the bottom inner portion of the base 1, and a screw body 403 is rotatably arranged between the support seat 401 and one side inner portion of the base 1. A pulley B405 is fixedly installed on one end of the motor shaft of the servo motor 402, and a pulley A404 is fixedly installed on the end of the screw body 403 facing the servo motor 402. A transmission belt 406 is jointly installed on the pulley A404 and the pulley B405. Through the arrangement of the screw drive mechanism 4 and the central stabilizing mechanism 5, the screw body 403 is driven to rotate by the servo motor 402, and the screw body 403 with the spiral rotation is used to drive the movable seat 501 with the inner wire seat 502 to move with the help of two rubber support wheels 504, thereby driving the installation platform 3 to move, which greatly improves the stability of the forward movement, thereby further improving the accuracy of the projection of the projected image.

[0027] In an embodiment of the present utility model, guide seats 301 are fixedly provided on both sides of the mounting platform 3, and a plurality of guide wheels 101 are equidistantly rotatably provided at one end of both sides of the base 1. The plurality of guide wheels 101 located on the same side roll together in the guide seat 301. When the mounting platform 3 moves, it synchronously drives the two guide seats 301 to move. During the movement, the plurality of guide wheels 101 on both sides of the base 1 provide support for the two guide seats 301, and cooperate with the two rubber support wheels 504 on the movable seat 501 to form a three-point support for the mounting platform 3, thereby further improving the installation effect.

[0028] Working principle: This embodiment provides an electric telescopic table for displacement compensation of projection equipment. When in use, the projection equipment is set above the installation platform 3. When the projection equipment needs to be compensated for displacement, the servo motor 402 is required to drive the pulley B405 to rotate, and then the screw body 403 provided with the pulley A404 is driven to rotate with the help of the transmission belt 406, thereby pushing the movable seat 501 provided with the inner wire seat 502 to move with the help of two rubber support wheels 504, and then driving the installation platform 3 provided with two guide seats 301 to move with the help of several guide wheels 101, thereby realizing displacement compensation of the projection equipment. During the displacement process, three-point support is achieved with the help of several guide wheels 101 and two rubber support wheels 504, which effectively improves the stability of the support.

[0029] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A projection equipment displacement compensation electric telescopic table, characterized in that: It comprises a base (1) and a cover (2) detachably mounted on the top of the base (1); A mounting platform (3) is slidably provided on the cover plate (2), a screw drive mechanism (4) is centrally provided in the base (1), and a guide groove (201) for the sliding arrangement of a middle stabilizing mechanism (5) is centrally provided at the top end of the cover plate (2); The central stabilizing mechanism (5) comprises a movable seat (501), the bottom ends of both sides of the movable seat (501) are rotatably mounted with rubber support wheels (504), and the two rubber support wheels (504) are both rollingly arranged on the bottom of the base (1), and a T-shaped seat (503) fixedly connected to the mounting platform (3) is constructed at the top center of the movable seat (501), and the T-shaped seat (503) is slidably arranged in the guide groove (201).

2. The projection equipment displacement compensation electric telescopic table according to claim 1, characterized in that: The screw drive mechanism (4) comprises a support seat (401) and a servo motor (402); the support seat (401) is fixedly arranged on one side of the bottom of the base (1); and a screw body (403) is rotatably arranged between the support seat (401) and one side of the base (1).

3. The projection equipment displacement compensation electric telescopic table according to claim 2, characterized in that: A pulley B (405) is fixedly mounted on one end of the motor shaft of the servo motor (402), and a pulley A (404) is fixedly mounted on one end of the screw rod body (403) facing the servo motor (402), and a transmission belt (406) is mounted on both the pulley A (404) and the pulley B (405).

4. The projection equipment displacement compensation electric telescopic table according to claim 2, characterized in that: An inner thread seat (502) is fixedly provided inside the movable seat (501), and the inner thread seat (502) is threadedly mounted on the screw rod body (403).

5. The projection equipment displacement compensation electric telescopic stage according to claim 1, characterized in that: Guide seats (301) are fixedly provided on both sides of the installation platform (3), and a plurality of guide wheels (101) are rotatably provided at equal distances on one end of both sides of the base (1), and the plurality of guide wheels (101) located on the same side are rolled together in the guide seat (301).

6. The projection equipment displacement compensation electric telescopic stage according to claim 5, characterized in that: Two infrared limit sensors (6) are symmetrically arranged on one side of the base (1), and a shielding arm (505) is constructed on one side of the movable seat (501) to cooperate with the two infrared limit sensors (6).

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