Lifting platforms for stage engineering

Abstract

The present invention discloses a lifting platform for stage engineering, which belongs to the technical field of construction machinery, and includes a base and a lifting platform, wherein a scissor frame is provided at the upper end of the base, a hydraulic cylinder for driving the scissor frame is provided at the upper end of the base, a plurality of deflection plates are hingedly provided at the edge of the upper end of the lifting platform, and the plurality of deflection plates are distributed in a circular array, and a transmission assembly for driving the deflection plate to close is provided at the lower end of the lifting platform. The beneficial effects of the present invention are as follows: by arranging a lifting platform, a deflection plate, an outer shell, a connecting sleeve, a fixing ring, a spring and a fixing rod, on the one hand, the deflection plate automatically flips open during the upward movement of the lifting platform, thereby improving the safety of the staff standing on the upper end of the lifting platform during the operation, and on the other hand, the deflection plate flips and closes into a storage slot under the action of the outer shell during the downward movement of the lifting platform, thereby reducing the space occupied by the lifting platform when not in use, thereby improving the overall aesthetics of the lifting platform.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, in particular to a lifting platform used for stage engineering. Background Art

[0002] During the construction of stage projects, aerial work is often required to build the stage's lighting, audio, multimedia equipment, etc. The so-called aerial work usually refers to work at height. Generally speaking, if the construction work is carried out on a shelf two meters or more, it is aerial work. Due to the high safety requirements for aerial work, it is necessary to lift the staff to the designated work area through a lifting platform to ensure the safety of the construction workers.

[0003] Most lifting platforms are equipped with a base, a lifting platform and a scissor frame. The scissor frame is used to connect the base and the lifting platform, and then the scissor frame is driven by a hydraulic cylinder to unfold, driving the lifting platform to rise, thereby ensuring the stability of the lifting platform. However, during the operation, the tools needed by the workers are usually packed in a work box, and then the work box is placed on the lifting platform. In the absence of protective measures, the work box is easy to slide off the lifting platform. At the same time, the workers are often searching for tools in the work box, which affects work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems and to propose a lifting platform for stage engineering.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lifting platform for stage engineering, comprising a base and a lifting platform, wherein the upper end of the base is provided with a scissor frame, the upper end of the base is provided with a hydraulic cylinder for driving the scissor frame to operate, the lower end of the lifting platform is provided with a mounting plate matched with the upper end of the scissor frame, the upper end of the lifting platform is provided with a rotating plate, the upper end of the rotating plate is provided with a placement frame for placing tools, a plurality of deflection plates are hingedly provided at the edge of the upper end of the lifting platform, the plurality of deflection plates are distributed in a ring array, and the lower end of the lifting platform is sleeved with a transmission assembly for driving the deflection plate to close;

[0007] The transmission assembly includes an installation cavity opened inside the lifting platform and an outer shell slidably mounted on the lower end of the lifting platform for squeezing the deflection plate to deflect and close. A connecting sleeve is fixedly provided on the bottom surface of the outer shell. The upper end of the connecting sleeve movably penetrates into the installation cavity and is sleeved with a fixing ring. The upper end surface of the fixing ring is connected to the top surface of the installation cavity through a spring. The lower end of the outer shell is provided with a fixing rod that matches the upper end surface of the base.

[0008] As a further description of the above technical solution:

[0009] The upper end surface of the lifting platform is provided with a storage groove that matches the deflection plate, and the deflection plate is hinged to the bottom surface of the storage groove through a first reset hinge. One side of the deflection plate is hinged with a pressure plate that matches the outer shell through a second reset hinge. The stiffness coefficient of the second reset hinge is greater than the stiffness coefficient of the first reset hinge, and the upper end of the outer surface of the outer shell is chamfered.

[0010] As a further description of the above technical solution:

[0011] A mounting shaft matching the connecting sleeve is fixedly provided at the lower end of the rotating plate. The mounting shaft is rotatably connected to the lifting platform through a bearing. A protrusion is fixedly provided on the inner wall of the connecting sleeve. A wave groove and a vertical groove matching the protrusion are respectively provided on the surface of the mounting shaft. There are multiple vertical grooves and the lower ends of the vertical grooves are respectively connected to the wave crests of the wave grooves.

[0012] As a further description of the above technical solution:

[0013] The lower end of the outer shell is provided with a slide groove matched with the mounting plate.

[0014] As a further description of the above technical solution:

[0015] Universal wheels are symmetrically arranged on the outer side of the base, and supporting feet are symmetrically arranged on the outer side of the base.

[0016] As a further description of the above technical solution:

[0017] An annular groove is provided on the upper end of the lifting platform, and an inclined surface matching the annular groove is provided on the inner bottom surface of the receiving groove.

[0018] As a further description of the above technical solution:

[0019] An annular pad is provided on the inner bottom surface of the annular groove, and two lifting handles are symmetrically provided on the upper end of the annular pad.

[0020] As a further description of the above technical solution:

[0021] The placement frame is fixedly connected to the upper end of the rotating plate by bolts, and the upper end of the rotating plate is provided with a mounting hole for bolt connection.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] In the present invention, by arranging a lifting platform, a deflection plate, an outer shell, a connecting sleeve, a fixing ring, a spring and a fixing rod, on the one hand, the deflection plate is automatically flipped open during the upward movement of the lifting platform, thereby improving the safety of the workers standing on the upper end of the lifting platform during the operation; on the other hand, when the lifting platform moves downward, the deflection plate is flipped and closed into the storage groove under the action of the outer shell, thereby reducing the space occupied by the lifting platform when not in use and improving the overall aesthetics of the lifting platform.

[0024] In the present invention, by arranging a rotating plate, a placement rack, an installation shaft, a vertical groove, a wave groove and a protrusion, when the protrusion is located in the vertical groove, the installation shaft cannot rotate, thereby ensuring the stability of the placement rack; when the protrusion is located in the wave groove, the staff can rotate the placement rack to drive the installation shaft to rotate, thereby facilitating the staff to select the tools prepared on the placement rack according to usage requirements, thereby improving work efficiency.

[0025] In the present invention, by providing a pressure plate and a second reset hinge, when a worker stands on the lifting platform to block the deflection plate from closing, the outer shell squeezes the pressure plate to deform the second reset hinge to store force, thus preparing for the subsequent closing of the deflection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The appearance diagram of the lifting platform provided according to the embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram of a partial structure of a lifting platform in a stowed state according to an embodiment of the present invention is shown;

[0028] Figure 3 It shows a partial structural cross-sectional view of the unfolded state of the lifting platform provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the outer shell structure provided in an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of the structure of a lifting platform provided in an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the connection structure between the installation shaft and the connecting sleeve provided in an embodiment of the present invention is shown;

[0032] Figure 7 A cross-sectional view of a connection structure between an installation shaft and a connection sleeve provided in accordance with an embodiment of the present invention is shown;

[0033] Figure 8 A schematic diagram of the connection structure between the deflection plate and the pressure plate provided in an embodiment of the present invention is shown;

[0034] Fig. 9An exploded schematic diagram of a deflection plate and a pressure plate structure provided in an embodiment of the present invention is shown;

[0035] Fig.10 It shows a partial structural schematic diagram of the lifting platform in the unfolded state according to the second embodiment of the present invention;

[0036] Fig.11 A partial structural cross-sectional view of a lifting platform in an unfolded state according to a second embodiment of the present invention is shown.

[0037] Legend: 1. Base; 2. Lifting platform; 3. Scissor frame; 4. Hydraulic cylinder; 5. Outer shell; 6. Universal wheel; 7. Support foot; 8. Placement rack; 9. Slide groove; 10. Mounting plate; 11. Deflection plate; 12. Storage groove; 13. Connecting sleeve; 14. Spring; 15. Fixed ring; 16. Mounting shaft; 17. Bearing; 18. Vertical groove; 19. Wave groove; 20. Bump; 21. Pressure plate; 22. First reset hinge; 23. Second reset hinge; 24. Fixed rod; 25. Rotating plate; 26. Annular groove; 27. Annular pad; 28. Lifting handle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0039] like Figure 1-Figure 9 As shown, the lifting platform used for stage engineering includes a base 1 and a lifting platform 2, a scissor frame 3 is provided on the upper end of the base 1, a hydraulic cylinder 4 for driving the scissor frame 3 is provided on the upper end of the base 1, a mounting plate 10 matched with the upper end of the scissor frame 3 is provided on the lower end of the lifting platform 2, a rotating plate 25 is rotatably provided on the upper end of the lifting platform 2, a placement frame 8 for placing tools is provided on the upper end of the rotating plate 25, a plurality of deflection plates 11 are hingedly provided at the edge of the upper end of the lifting platform 2, and the plurality of deflection plates 11 are distributed in a ring array, and a transmission component for driving the deflection plates 11 to close is sleeved on the lower end of the lifting platform 2. When the staff needs to work at high altitudes, the staff places the tools needed for the work on the placement frame 8 according to the use requirements, and the placement frame 8 has a hook for hanging the tools, and then the staff stands on the lifting platform 2, and then starts the hydraulic cylinder 4, so that the scissor frame 3 is gradually unfolded, thereby driving the lifting platform 2 to move upward, and lifting the staff to the working area;

[0040] The transmission assembly includes an installation cavity opened in the lifting platform 2 and an outer shell 5 slidably sleeved on the lower end of the lifting platform 2 for squeezing the deflection plate 11 to deflect and close. A connecting sleeve 13 is fixedly arranged on the inner bottom surface of the outer shell 5. The upper end of the connecting sleeve 13 movably penetrates into the installation cavity and is sleeved with a fixing ring 15. The upper end surface of the fixing ring 15 is connected to the top surface of the installation cavity through a spring 14. A fixing rod 24 matching the upper end surface of the base 1 is arranged at the lower end of the outer shell 5. When the lifting platform 2 moves upward, the outer shell 5 is driven to move upward synchronously, so that the fixing rod 24 gradually separates from the upper end surface of the base 1. Under the resetting action of the spring 14, the outer shell 5 will move downward relative to the lifting platform 2, releasing the flipping constraint on the deflection plate 11, making it convenient for the deflection plate 11 to flip and open, thereby achieving a safety protection effect, that is, improving the safety of the staff during operation.

[0041] Furthermore, a storage groove 12 cooperating with the deflection plate 11 is provided on the upper end surface of the lifting platform 2, and the deflection plate 11 is hingedly matched with the inner bottom surface of the storage groove 12 through a first reset hinge 22. A pressure plate 21 cooperating with the outer shell 5 is hingedly provided on one side of the deflection plate 11 through a second reset hinge 23. The stiffness coefficient of the second reset hinge 23 is greater than the stiffness coefficient of the first reset hinge 22. The upper end of the outer surface of the outer shell 5 is chamfered. When the outer shell 5 moves downward relative to the lifting platform 2 to release the flipping constraint on the deflection plate 11, the deflection plate 11 is flipped open under the reset action of the first reset hinge 22 (if a staff member stands on the lifting platform 2 and steps on the deflection plate 11 therein with his feet, causing the deflection plate 11 to fail to automatically open under the action of the first reset hinge 22, the staff member can move his feet to unfold the deflection plate 11 that has not been unfolded. For the unfolded state, refer to the attached manual). Figure 1 ), when the staff has completed the work, the scissor frame 3 is gradually retracted under the action of the hydraulic cylinder 4, so that the lifting platform 2 moves downward, and then drives the outer shell 5 to move downward, so that the fixed rod 24 at the lower end of the outer shell 5 gradually abuts against the upper end surface of the base 1, thereby compressing the spring 14, that is, the outer shell 5 moves upward relative to the lifting platform 2, the outer shell 5 will squeeze the pressure plate 21, and then the deflection plate 11 is deflected and closed into the storage groove 12 (the staff stands on the lifting platform 2 to block the deflection and closure of the deflection plate 11. Since the deflection of the deflection plate 11 is blocked, the outer shell 5 squeezes the pressure plate 21 to cause the second reset hinge 23 to deform, so as to store force for the subsequent deflection and closure of the deflection plate 11, and prepare for it. After the other deflection plates 11 are closed into the storage groove 12, the staff can remove the obstruction to the deflection plate 11 by moving their feet. At this time, under the action of the resetting of the second reset hinge 23, the deflection plate 11 is closed into the storage groove 12).

[0042] Further, the lower end of the rotating plate 25 is fixedly provided with a mounting shaft 16 that matches the connecting sleeve 13, and the mounting shaft 16 is rotatably connected to the lifting platform 2 through a bearing 17. A protrusion 20 is fixedly provided on the inner wall of the connecting sleeve 13, and a wave groove 19 and a vertical groove 18 that match the protrusion 20 are respectively opened on the surface of the mounting shaft 16. The number of vertical grooves 18 is multiple and the lower ends are respectively connected to the wave crests of the wave groove 19. When the outer shell 5 moves downward relative to the lifting platform 2, the protrusion 20 slides from the vertical groove 18 into the trough of the wave groove 19 (refer to the attached manual). Figure 3 And the instruction manual Figure 7 ), and then when the staff takes the tool on the placement rack 8, the staff can rotate the placement rack 8 to select the tool, which is more convenient to operate. At the same time, the rotation of the placement rack 8 drives the rotating plate 25 to rotate, and the rotation of the rotating plate 25 drives the installation shaft 16 to rotate. Under the cooperation of the protrusion 20 and the wave groove 19, the installation shaft 16 is made to rotate after each rotation of a certain angle (that is, the protrusion 20 slides to the adjacent trough), and a preliminary limit constraint is performed, so that the placement rack 8 will not rotate at will, thereby improving the stability during use. When the outer shell 5 moves upward relative to the lifting platform 2, the protrusion 20 will slide from the wave groove 19 into the vertical groove 18, thereby limiting the rotation of the installation shaft 16, that is, limiting the rotation of the placement rack 8, ensuring the stability of the placement rack 8 when the lifting platform is not in use.

[0043] Furthermore, a slide groove 9 cooperating with the mounting plate 10 is provided at the lower end of the outer shell 5 . With the cooperation between the mounting plate 10 and the slide groove 9 , the stability of the outer shell 5 during the up and down movement relative to the lifting platform 2 is ensured.

[0044] Furthermore, universal wheels 6 are symmetrically arranged on the outside of the base 1, and support feet 7 are symmetrically arranged on the outside of the base 1. The universal wheels 6 are distributed on the left and right sides of the base 1 (refer to the attached manual). Figure 1 ), which is convenient for the staff to move the lifting platform, the support feet 7 are distributed on the front and back sides of the base 1 (refer to the attached manual Figure 1 ), which makes it convenient for staff to stabilize the lifting platform and improve the stability of the lifting platform.

[0045] Furthermore, the placement rack 8 is fixedly connected to the upper end of the rotating plate 25 by bolts. The upper end of the rotating plate 25 is provided with a mounting hole for bolt connection. When in use, the staff can replace and install different types of placement racks 8 according to the use requirements of the construction tools. Example 2

[0046] like Fig.10 and Fig.11As shown, an annular groove 26 is provided at the upper end of the lifting platform 2, and an inclined surface matching the annular groove 26 is provided on the inner bottom surface of the storage groove 12. The inner bottom surface of the annular groove 26 is lower than the inner bottom surface of the storage groove 12. During the construction process, due to operational errors, some parts (such as screws, nuts, etc.) may fall off. The parts fall into the storage groove 12 and slide along the inclined surface into the annular groove 26, which effectively prevents the parts from falling into the storage groove 12 and affecting the subsequent flipping and closing of the deflector plate 11.

[0047] Furthermore, an annular pad 27 is provided on the inner bottom surface of the annular groove 26, and two lifting handles 28 are symmetrically provided on the upper end of the annular pad 27. The staff can pull the annular pad 27 out of the annular groove 26 through the lifting handles 28, so as to facilitate the cleaning and recycling of the dropped and collected parts.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting platform for stage engineering, comprising a base (1) and a lifting platform (2), wherein the upper end of the base (1) is provided with a scissor frame (3), the upper end of the base (1) is provided with a hydraulic cylinder (4) for driving the scissor frame (3) to operate, and the lower end of the lifting platform (2) is provided with a mounting plate (10) matched with the upper end of the scissor frame (3), characterized in that: A rotating plate (25) is rotatably provided at the upper end of the lifting platform (2), a placement frame (8) for placing tools is provided at the upper end of the rotating plate (25), a plurality of deflection plates (11) are hingedly provided at the edge of the upper end of the lifting platform (2), the plurality of deflection plates (11) are distributed in a ring array, and a transmission component for driving the deflection plates (11) to close is sleeved at the lower end of the lifting platform (2); The transmission assembly comprises an installation cavity opened inside the lifting platform (2) and an outer shell (5) slidably mounted on the lower end of the lifting platform (2) for squeezing the deflection plate (11) to deflect and close. A connecting sleeve (13) is fixedly mounted on the inner bottom surface of the outer shell (5). The upper end of the connecting sleeve (13) movably penetrates into the installation cavity and is sleeved with a fixing ring (15). The upper end surface of the fixing ring (15) is connected to the top surface of the installation cavity via a spring (14). The lower end of the outer shell (5) is provided with a fixing rod (24) that matches the upper end surface of the base (1).

2. The lifting platform for stage engineering according to claim 1, characterized in that: The upper end surface of the lifting platform (2) is provided with a receiving groove (12) that matches the deflection plate (11); the deflection plate (11) is hingedly connected to the inner bottom surface of the receiving groove (12) via a first reset hinge (22); one side of the deflection plate (11) is hingedly provided with a pressure plate (21) that matches the outer shell (5) via a second reset hinge (23); the stiffness coefficient of the second reset hinge (23) is greater than the stiffness coefficient of the first reset hinge (22); and the upper end of the outer surface of the outer shell (5) is chamfered.

3. The lifting platform for stage engineering according to claim 2, characterized in that: A mounting shaft (16) matching with the connecting sleeve (13) is fixedly provided at the lower end of the rotating plate (25); the mounting shaft (16) is rotatably connected to the lifting platform (2) via a bearing (17); a protrusion (20) is fixedly provided on the inner wall of the connecting sleeve (13); a wave groove (19) and a vertical groove (18) matching with the protrusion (20) are respectively formed on the surface of the mounting shaft (16); the vertical grooves (18) are multiple in number and the lower ends are respectively connected to the wave crests of the wave grooves (19).

4. The lifting platform for stage engineering according to claim 2, characterized in that: The lower end of the outer shell (5) is provided with a slide groove (9) which matches the mounting plate (10).

5. The lifting platform for stage engineering according to claim 1, characterized in that: Universal wheels (6) are symmetrically arranged on the outer side of the base (1), and supporting feet (7) are symmetrically arranged on the outer side of the base (1).

6. The lifting platform for stage engineering according to claim 2, characterized in that: An annular groove (26) is provided at the upper end of the lifting platform (2), and an inclined surface matching the annular groove (26) is provided on the inner bottom surface of the receiving groove (12).

7. The lifting platform for stage engineering according to claim 6, characterized in that: An annular pad (27) is provided on the inner bottom surface of the annular groove (26), and two lifting handles (28) are symmetrically provided on the upper end of the annular pad (27).

8. The lifting platform for stage engineering according to claim 1, characterized in that: The placement frame (8) is fixedly connected to the upper end of the rotating plate (25) by means of bolts, and the upper end of the rotating plate (25) is provided with a mounting hole for bolt connection.

Images