Lifting platform for physical experiment

Abstract

The invention discloses a lifting platform for physical experiments, which comprises a base, the lower end of the base is fixedly connected with a plurality of support rods, and the lower ends of the plurality of support rods are jointly and fixedly connected with a support rod; the lifting mechanism comprises a rectangular strip fixedly connected to the upper end of the base, a sliding groove is formed in the right side of the rectangular strip, a threaded rod is rotationally connected between the upper inner wall and the lower inner wall of the sliding groove, the threaded rod is in threaded connection with a sliding block, the sliding block is slidably connected with the inner wall of the sliding groove, and a mounting plate is fixedly connected to the right side of the sliding block; a plurality of electromagnets are fixedly connected to the lower end of the mounting plate; and a detection mechanism. When the lifting platform is used, accurate adjustment of different heights can be achieved, the requirement for detecting gravitational acceleration of objects at different heights during physical experiment detection is met, in addition, a display part can be automatically cleaned, workers do not need to regularly clean the display part, and actual use is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of experimental auxiliary tools, in particular to a lifting platform for physical experiments. Background Art

[0002] In the field of physical experiments, especially those involving the detection of gravitational acceleration of objects, the experimental device has high requirements for the accuracy of height adjustment;

[0003] Currently, traditional experimental platforms or lifting devices have obvious deficiencies in height adjustment, making it difficult to achieve precise control at different heights. This leads to certain errors in experimental data and cannot meet the demand for precise detection of gravitational acceleration of objects at different heights, limiting the accuracy and reliability of experimental results.

[0004] In addition, during the experiment, the display part used to display experimental data or related information, that is, the display screen part, is easily contaminated by dust, affecting the clear reading of data. The existing processing methods mostly rely on regular manual cleaning by staff. This method increases labor costs, so how to solve the above problems needs to be considered. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a lifting platform for physical experiments. When in use, the lifting platform can achieve precise adjustment of different heights to meet the needs of detecting the gravitational acceleration of objects at different heights during physical experiments. In addition, the display part can be automatically cleaned without the need for staff to clean it regularly, which facilitates actual use.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A lifting platform for physical experiments includes a base, a plurality of support rods fixedly connected to the lower end of the base, and the lower ends of the plurality of support rods are fixedly connected to the support rods together; a lifting mechanism, the lifting mechanism includes a rectangular bar fixedly connected to the upper end of the base, a slide groove is provided on the right side of the rectangular bar, a threaded rod is rotatably connected between the upper and lower inner walls of the slide groove, a slider is threaded on the threaded rod, the slider is slidably connected to the inner wall of the slide groove, a mounting plate is fixedly connected to the right side of the slider, and a plurality of electromagnets are fixedly connected to the lower end of the mounting plate; a detection mechanism, the detection mechanism is used to detect the falling speed to meet the needs of the experiment; the display mechanism is used to display the detection data of the detection mechanism.

[0008] Preferably, the lower ends of the plurality of support rods are fixedly connected to a support plate, the lower end of the support plate is mounted with a plurality of universal wheels, and the plurality of universal wheels are all locking universal wheels.

[0009] Preferably, a mounting bracket is installed on the upper end of the rectangular bar, a driving motor is installed on the front side of the mounting bracket, and the output shaft of the driving motor extends into the slide groove and is fixedly connected to the upper end of the threaded rod.

[0010] Preferably, an L-shaped indicator strip is fixedly connected to the front side of the mounting plate, and a scale layer is provided on the front side of the rectangular strip, and the scale layer cooperates with the L-shaped indicator strip.

[0011] Preferably, the detection mechanism includes a plurality of columnar slots provided on the upper end of the base, and a speed detection sensor is installed on the right side wall of each columnar slot.

[0012] Preferably, a threaded rod that can slide up and down is provided in the cylindrical groove, a sliding plate that can slide up and down is provided in the threaded rod, a rubber pad is provided at the upper end of the sliding plate, and the lower end of the sliding plate is elastically connected to the inner bottom of the cylindrical groove through a buffer spring.

[0013] Preferably, the display mechanism includes a rectangular groove opened on the front side of the base, a display panel is installed in the rectangular groove, and the display panel is electrically connected to a plurality of speed detection sensors.

[0014] Preferably, the lower end of the threaded rod extends to the outside and is fixedly connected to a rotating shaft, the lower end of the rotating shaft is fixedly connected to a cam, the lower end of the base is fixedly connected to a connecting block, the lower end of the connecting block is fixedly connected to a piston cylinder, a piston plate that can slide left and right is provided in the piston cylinder, the left side of the piston plate is fixedly connected to a round-headed push rod, the left end of the round-headed push rod is in contact with the cam, the right side of the piston plate is elastically connected to the right side wall of the piston cylinder through a return spring, the lower end of the base is fixedly connected to a hollow bar, and an exhaust port is provided at the inner top of the hollow bar.

[0015] Preferably, the right side space of the piston cylinder is connected to the inside of the hollow bar through a one-way tube, and the right side space of the piston cylinder is connected to the outside world through a one-way port. One-way valves are installed inside the one-way port and the one-way tube. The one-way valve inside the one-way port flows in a one-way direction from the outside world into the right side space of the piston cylinder, and the one-way valve inside the one-way tube flows in a one-way direction from the piston cylinder into the hollow bar.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The drive motor drives the threaded rod to rotate, causing the slider to slide up and down in the slide groove, thereby driving the mounting plate to move. Combined with the L-shaped indicator strip on the front side of the mounting plate and the scale layer on the front side of the rectangular strip, precise adjustment of different heights can be achieved to meet the precise requirements of gravitational acceleration detection of objects at different heights.

[0018] 2. Multiple electromagnets are set at the lower end of the mounting plate. When powered on, they can be magnetically connected to the iron weights. When powered off, the weights fall for detection. This operation method is stable and reliable, ensuring that the weights are accurately fixed in the initial stage of the experiment and ensuring the smooth progress of the experiment.

[0019] 3. When the weight falls into the cylindrical groove, the speed detection sensor can detect its falling speed. At the same time, the sliding plate, together with the buffer spring and rubber pad, can buffer the impact force, effectively preventing the weight from being damaged by the impact, extending the service life of the weight and reducing the experimental cost.

[0020] 4. The display panel is electrically connected to multiple speed detection sensors, which can display the detected weight falling speed data in real time, making it convenient for staff to obtain experimental information in time, facilitate monitoring and analysis of the experimental process, and improve experimental efficiency;

[0021] 5. When the lifting mechanism is adjusted up and down, the threaded rod is used to rotate and drive the relevant parts, so that the piston plate slides left and right in the piston cylinder, forming an air flow discharged from the exhaust port to blow toward the display panel, thereby realizing automatic cleaning of the display panel. No manual operation is required by the staff, which is convenient for actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a lifting platform for physical experiments proposed by the present invention;

[0023] Figure 2 for Figure 1 Schematic cross-sectional view of ;

[0024] Figure 3 for Figure 2 A magnified view of point A;

[0025] Figure 4 It is a schematic diagram of the coordination of the piston cylinder and the hollow bar;

[0026] Figure 5 for Figure 4 Schematic diagram of the cross-section structure.

[0027] In the figure: 1 base, 2 support rod, 3 support plate, 4 universal wheel, 5 rectangular slot, 6 display panel, 7 hollow bar, 8 rectangular bar, 9 mounting frame, 10 drive motor, 11 scale layer, 12 mounting plate, 13 L-shaped indicator bar, 14 columnar slot, 15 speed detection sensor, 16 threaded rod, 17 slider, 18 electromagnet, 19 sliding plate, 20 rubber pad, 21 buffer spring, 22 rotating shaft, 23 cam, 24 connecting block, 25 piston cylinder, 26 round head push rod, 27 one-way pipe, 28 exhaust port, 29 piston plate, 30 return spring, 31 one-way port. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0030] Reference Figure 1-5 A lifting platform for physical experiments includes a base 1, a plurality of support rods 2 are fixedly connected to the lower end of the base 1, the lower ends of the plurality of support rods 2 are fixedly connected to the support rod 2, the lower ends of the plurality of support rods 2 are fixedly connected to a support plate 3, and a plurality of universal wheels 4 are installed at the lower end of the support plate 3, and the plurality of universal wheels 4 are all locking universal wheels. The use of the universal wheels 4 facilitates the transportation of the lifting platform;

[0031] As an embodiment of the present invention, it also includes a lifting mechanism, which includes a rectangular bar 8 fixedly connected to the upper end of the base 1, a slide groove is opened on the right side of the rectangular bar 8, a threaded rod 16 is rotatably connected between the upper and lower inner walls of the slide groove, a slider 17 is threadedly connected to the threaded rod 16, and the slider 17 is slidably connected to the inner wall of the slide groove, and a mounting plate 12 is fixedly connected to the right side of the slider 17. A plurality of electromagnets 18 are fixedly connected to the lower end of the mounting plate 12. The lifting platform is used in conjunction with corresponding iron weights. A mounting frame 9 is installed on the upper end of the rectangular bar 8, and a drive motor 10 is installed on the front side of the mounting frame 9. The output shaft of the drive motor 10 extends into the slide groove and is fixedly connected to the upper end of the threaded rod 16;

[0032] As an embodiment of the present invention, an L-shaped indicator strip 13 is fixedly connected to the front side of the mounting plate 12, and a scale layer 11 is provided on the front side of the rectangular strip 8. The scale layer 11 cooperates with the L-shaped indicator strip 13, and the use of the scale layer 11 can achieve precise height adjustment;

[0033] As an embodiment of the present invention, a detection mechanism is further included. The detection mechanism is used to detect the falling speed to meet the needs of the experiment. The detection mechanism includes a plurality of cylindrical grooves 14 opened at the upper end of the base 1. A speed detection sensor 15 is installed on the right side wall of each cylindrical groove 14. A threaded rod 16 that can slide up and down is provided in the cylindrical groove 14. A sliding plate 19 that can slide up and down is provided in the threaded rod 16. A rubber pad 20 is provided at the upper end of the sliding plate 19. The lower end of the sliding plate 19 is elastically connected to the inner bottom of the cylindrical groove 14 by a buffer spring 21. The use of the buffer spring 21 in combination with the rubber pad 20 can buffer the impact force of the collision, thereby preventing the weight from being damaged.

[0034] As an embodiment of the present invention, a display mechanism is further included, which is used to display the detection data of the detection mechanism. The display mechanism includes a rectangular groove 5 opened on the front side of the base 1, and a display panel 6 is installed in the rectangular groove 5. The display panel 6 is electrically connected to the plurality of speed detection sensors 15;

[0035] As an embodiment of the present invention, the lower end of the threaded rod 16 extends to the outside and is fixedly connected to a rotating shaft 22, the lower end of the rotating shaft 22 is fixedly connected to a cam 23, the lower end of the base 1 is fixedly connected to a connecting block 24, the lower end of the connecting block 24 is fixedly connected to a piston cylinder 25, a piston plate 29 that can slide left and right is provided in the piston cylinder 25, the left side of the piston plate 29 is fixedly connected to a round head push rod 26, the left end of the round head push rod 26 is in contact with the cam 23, the right side of the piston plate 29 is elastically connected to the right side wall of the piston cylinder 25 through a return spring 30, and the lower end of the base 1 is fixedly connected to an air The core bar 7 and the inner top of the hollow bar 7 are provided with an exhaust port 28. The right side space of the piston cylinder 25 is connected with the inside of the hollow bar 7 through a one-way tube 27. The right side space of the piston cylinder 25 is connected with the outside world through a one-way port 31. One-way valves are installed inside the one-way port 31 and the one-way tube 27. The one-way valve inside the one-way port 31 flows in a one-way direction from the outside world into the right side space of the piston cylinder 25. The one-way valve inside the one-way tube 27 flows in a one-way direction from the piston cylinder 25 into the hollow bar 7. When the lifting mechanism is lifted and lowered, the airflow cleaning operation of the display panel 6 can be automatically realized without the need for manual cleaning by the staff.

[0036] In the present invention, the lifting platform can be conveniently transferred to the desired position through the universal wheel 4. When the height needs to be adjusted, the driving motor 10 is started to drive the threaded rod 16 to rotate, and the slider 17 threadedly connected to the threaded rod 16 slides up and down under the limit of the inner wall of the slide groove, thereby driving the mounting plate 12 fixedly connected to the right side of the slider 17 to move up and down. The L-shaped indicator strip 13 on the front side of the mounting plate 12 cooperates with the scale layer 11 on the front side of the rectangular strip 8. The staff can achieve precise adjustment of the height according to the scale layer 11 to meet the needs of gravitational acceleration detection of objects at different heights. The multiple electromagnets 18 at the lower end of the mounting plate 12 are used in conjunction with corresponding iron weights to carry out relevant experiments;

[0037] During detection, the electromagnets 18 are energized to connect the weights magnetically therewith. Then, the electromagnets 18 are turned off, and the weights fall. When the weights fall, they enter the cylindrical slots 14. The speed detection sensor 15 can detect the falling speed of the weights. When the weights hit the sliding plate 19, the buffer spring 21 cooperates with the rubber pad 20 to cushion the impact force and prevent the weights from being damaged. The display panel 6 is electrically connected to the speed detection sensors 15, and the data detected by the speed detection sensors 15 are displayed in real time on the display panel 6.

[0038] When the lifting mechanism is lifted and lowered, the rotation of the threaded rod 16 drives the rotating shaft 22 extending from the lower end to the outside to rotate, thereby driving the cam 23 to rotate; during the rotation of the cam 23, it pushes the round-headed push rod 26 in contact with it to move left and right, and the round-headed push rod 26 drives the piston plate 29 to slide left and right in the piston cylinder 25; when the piston plate 29 moves to the left, a negative pressure is formed in the space on the right side of the piston cylinder 25, and the outside air enters the space on the right side of the piston cylinder 25 through the one-way port 31 (the flow direction of the internal one-way valve is that the outside enters the space on the right side of the piston cylinder 25 in one direction); when the piston plate 29 moves to the right, the gas in the space on the right side of the piston cylinder 25 enters the hollow bar 7 through the one-way pipe 27 (the flow direction of the internal one-way valve is that the piston cylinder 25 enters the hollow bar 7 in one direction), and is discharged from the exhaust port 28 at the top of the hollow bar 7 and blown towards the display panel 6, thereby realizing automatic cleaning of the display panel 6, without the need for manual cleaning by the staff, which is convenient for actual use.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A lifting platform for physical experiments, characterized in that: include: A base (1), wherein the lower end of the base (1) is fixedly connected to a plurality of support rods (2), and the lower ends of the plurality of support rods (2) are commonly fixedly connected to a support rod (2); A lifting mechanism, the lifting mechanism comprising a rectangular bar (8) fixedly connected to the upper end of the base (1), a slide groove being provided on the right side of the rectangular bar (8), a threaded rod (16) being rotatably connected between the upper and lower inner walls of the slide groove, a slider (17) being threadedly connected to the threaded rod (16), the slider (17) being slidably connected to the inner wall of the slide groove, a mounting plate (12) being fixedly connected to the right side of the slider (17), and a plurality of electromagnets (18) being fixedly connected to the lower end of the mounting plate (12); A detection mechanism, which is used to detect the falling speed to meet the needs of the experiment; The display mechanism is used to display the detection data of the detection mechanism.

2. A lifting platform for physical experiments according to claim 1, characterized in that: The lower ends of the plurality of support rods (2) are commonly fixedly connected to a support plate (3), and the lower end of the support plate (3) is mounted with a plurality of universal wheels (4), and the plurality of universal wheels (4) are all locking universal wheels.

3. A lifting platform for physical experiments according to claim 1, characterized in that: A mounting frame (9) is installed at the upper end of the rectangular bar (8), and a driving motor (10) is installed on the front side of the mounting frame (9). The output shaft of the driving motor (10) extends into the slide groove and is fixedly connected to the upper end of the threaded rod (16).

4. A lifting platform for physical experiments according to claim 1, characterized in that: An L-shaped indicator strip (13) is fixedly connected to the front side of the mounting plate (12), and a scale layer (11) is provided on the front side of the rectangular strip (8), and the scale layer (11) cooperates with the L-shaped indicator strip (13).

5. A lifting platform for physical experiments according to claim 1, characterized in that: The detection mechanism comprises a plurality of columnar slots (14) provided on the upper end of the base (1), and a speed detection sensor (15) is installed on the right side wall of each columnar slot (14).

6. A lifting platform for physical experiments according to claim 5, characterized in that: A threaded rod (16) capable of sliding up and down is provided in the columnar groove (14), a sliding plate (19) capable of sliding up and down is provided in the threaded rod (16), a rubber pad (20) is provided at the upper end of the sliding plate (19), and the lower end of the sliding plate (19) is elastically connected to the inner bottom of the columnar groove (14) through a buffer spring (21).

7. A lifting platform for physical experiments according to claim 5, characterized in that: The display mechanism comprises a rectangular groove (5) provided on the front side of the base (1), a display panel (6) being installed in the rectangular groove (5), and the display panel (6) being electrically connected to a plurality of speed detection sensors (15).

8. A lifting platform for physical experiments according to claim 7, characterized in that: The lower end of the threaded rod (16) extends to the outside and is fixedly connected to a rotating shaft (22). The lower end of the rotating shaft (22) is fixedly connected to a cam (23). The lower end of the base (1) is fixedly connected to a connecting block (24). The lower end of the connecting block (24) is fixedly connected to a piston cylinder (25). A piston plate (29) that can slide left and right is provided in the piston cylinder (25). The left side of the piston plate (29) is fixedly connected to a round head push rod (26). The left end of the round head push rod (26) contacts the cam (23). The right side of the piston plate (29) is elastically connected to the right side wall of the piston cylinder (25) through a return spring (30). The lower end of the base (1) is fixedly connected to a hollow bar (7). The inner top of the hollow bar (7) is provided with an exhaust port (28).

9. A lifting platform for physical experiments according to claim 8, characterized in that: The right side space of the piston cylinder (25) is communicated with the inside of the hollow bar (7) through a one-way tube (27), and the right side space of the piston cylinder (25) is communicated with the outside world through a one-way port (31). One-way valves are installed inside the one-way port (31) and the one-way tube (27). The one-way valve inside the one-way port (31) allows the outside world to enter the right side space of the piston cylinder (25) in one direction, and the one-way valve inside the one-way tube (27) allows the piston cylinder (25) to enter the hollow bar (7) in one direction.

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