Lifting platform with locking structure

Abstract

The lifting platform with the locking structure comprises a movable base, a supporting structure and a lifting platform structure, the lifting platform structure is divided into a left lifting platform and a right lifting platform, the supporting structure is connected with the bottom of the lifting platform structure, and light curtain sensors are installed on the opposite sides of the left lifting platform and the right lifting platform. Driving structures are symmetrically installed in the movable base and connected with the supporting structures, the two driving structures can synchronously operate or independently operate, each driving structure comprises an installation structure and a double-shaft servo gear motor, the installation structures are installed on the bottom face of the inner side of the movable base, and a driving piece is installed at the output end of each double-shaft servo gear motor. The mounting structure comprises a mounting base mounted on the bottom face of the inner side of the movable base, and a ball bearing is mounted on the inner side face of the mounting base. The lifting platform solves the problems that an existing lifting platform cannot effectively guarantee the stability and safety of the lifting platform, and meanwhile operation at different heights cannot be achieved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a lifting platform with a locking structure. Background Art

[0002] As a mechanical equipment for lifting operations, lifting platforms are especially used in the construction field. Existing lifting platforms are divided into straight-top type and ordinary hydraulic drive. The straight-top type is directly lifted in the vertical direction by hydraulics or other driving parts, while the ordinary hydraulic drive is lifted by a scissor-type lifting rod. Both have advantages, but nowadays, both straight-top and scissor-type lifting platforms have a common problem, that is, there is no locking structure on the equipment. If the driving part is suddenly damaged during the driving and lifting, the platform may fall rapidly, causing danger to the workers on the platform and affecting their life safety. Secondly, the existing lifting platform cannot realize simultaneous construction on different height surfaces, so that it can only be lifted / lowered after completion on one construction surface to move to another height surface for construction, thereby wasting a lot of construction time.

[0003] The locking structure of the current lifting platform is divided into many types. First of all, it is necessary to understand that the current lifting platform, such as the Chinese patent CN216971928U, is a scissor-type lifting platform with a locking mechanism. Figure 1 With attached Figure 3 It can be seen from the description of the patent that the patent is provided with a locking structure. When the extension platform on the upper end of the moving main platform is moved, the position of the extension platform can be locked and fixed to prevent the extension platform from accidentally sliding, thereby improving the safety of the lifting platform. This locking structure is installed on the lifting platform, making its overall structure cumbersome, and it cannot more effectively guarantee the stability of the lifting platform in the locked state. Secondly, it cannot realize lifting operations at different heights.

[0004] Therefore, in order to ensure the safety of the lifting platform and secondly to achieve simultaneous construction at different heights, a lifting platform with a locking structure is proposed to solve the above technical problems. Utility Model Content

[0005] In response to the deficiencies of the existing technology, the utility model provides a lifting platform with a locking structure, which solves the problem that the existing lifting platform cannot more effectively ensure the stability and safety of the lifting platform and secondly cannot achieve simultaneous operations at different heights.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting platform with a locking structure, comprising a mobile base, a support structure, and a lifting platform structure, wherein the lifting platform structure is divided into a left lifting platform and a right lifting platform, the support structure is connected to the bottom of the lifting platform structure, and light curtain sensors are installed on opposite sides of the left lifting platform and the right lifting platform, and a driving structure is symmetrically installed in the mobile base, and the driving structure is connected to the support structure. The two sets of driving structures can operate synchronously or independently, and the driving structure includes a mounting structure and a dual-axis servo reduction motor installed on the inner bottom surface of the mobile base, and a driving component is installed on the output end of the dual-axis servo reduction motor, the mounting structure includes a mounting base installed on the inner bottom surface of the mobile base, and a ball bearing is installed on the inner side of the mounting base, and the driving component includes a rotating shaft installed on the output end of the dual-axis servo reduction motor and a worm wheel installed on the upper end surface of the inner ring of the ball bearing, a worm is installed on the surface of the rotating shaft, the worm and the worm wheel constitute a gear transmission, and a threaded shaft is fixedly installed on the inner side of the worm wheel, and the surface of the threaded shaft is connected to the inner ring of the ball bearing. The threaded shaft extends upward into the supporting structure and drives the supporting structure to move upward.

[0007] Through the above technical solution, further, a square bearing seat is installed on the inner side of the movable base, and the inner ring of the square bearing seat is connected to the end of the rotating shaft.

[0008] Furthermore, the support structure includes a mobile structure and a support assembly, and the mobile structure includes a lifting seat installed on the upper end of the mobile base, a hole is opened in the lifting seat, a threaded sleeve is installed in the hole, and an anti-rotation protrusion is provided on the outer surface of the threaded sleeve, and the threaded sleeve extends downward and is threadedly connected to the threaded shaft.

[0009] As a preferred technical solution, the support assembly includes a mounting column installed on the upper end of the threaded sleeve, a support rod is installed on the side of the mounting column, and the upper end surface of the support rod is connected to the lower end surface of the corresponding lifting platform.

[0010] Furthermore, light curtain sensors are installed on the right side of the left lifting platform and the left side of the right lifting platform, and a long mounting plate is installed on the right side of the left lifting platform, and a fixed plate is installed on the left side of the right lifting platform. A limiting column is installed on the lower end surface of the fixed plate, and the limiting column passes through the fixed plate and extends downward to the upper end surface of the movable base.

[0011] As a preferred technical solution, a ladder is installed on the right side of the mobile base, and the support rods on the right and left sides of the installation column extend outward, and the support rod on the right side of the installation column extends to the right side of the lower end of the left lifting platform.

[0012] Furthermore, revolving doors are installed on the left side of the left lifting platform and the right side of the right lifting platform, and the revolving door on the left side of the left lifting platform is in a closed state.

[0013] As a preferred technical solution, a rubber pad is provided on the upper end surface of the support rod.

[0014] Compared with the prior art, the present invention provides a lifting platform with a locking structure, which has the following beneficial effects:

[0015] 1. This lifting platform adopts a worm gear transmission relationship. Even if the reduction motor is damaged, it will not cause the rotation of the threaded shaft, and will not cause the platform to fall, thereby effectively improving the stability and safety of the platform. Secondly, this lifting platform uses two groups of dual-axis servo reduction motors to achieve synchronous rising of the left and right lifting platforms, and can also achieve group operation, so that this lifting platform can meet the construction needs of two different height surfaces, greatly shortening the construction time problem, and the lifting of the left and right lifting platforms can be ensured by the corresponding worm gear to ensure the stability and safety of the lifting, thereby solving the problem that the existing lifting platform cannot more effectively guarantee the stability and safety of the lifting platform, and secondly cannot achieve simultaneous operation at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a lifting platform with a locking structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a lifting platform movable base with a locking structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a dual-axis servo reduction motor for a lifting platform with a locking structure in the utility model;

[0019] Figure 4 This utility model is a lifting platform with a locking structure Figure 3 A local enlarged structural diagram of point A;

[0020] Figure 5 This is a schematic diagram of the structure of a lifting platform support rod with a locking structure in the utility model;

[0021] Figure 6 This utility model is a lifting platform with a locking structure Figure 2 A schematic diagram of the partially enlarged structure at point B;

[0022] Figure 7 This is a schematic diagram of the structure of a threaded sleeve of a lifting platform with a locking structure in the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of a lifting platform installation base with a locking structure of the utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the left and right lifting platforms of a lifting platform with a locking structure in the utility model;

[0025] Figure 10 This utility model is a lifting platform with a locking structure Figure 9 A schematic diagram of the partially enlarged structure at point C;

[0026] Figure 11 This is a top view of the left and right lifting platforms of a lifting platform with a locking structure according to the present invention;

[0027] Figure 12 This utility model is a lifting platform with a locking structure Figure 11 Schematic diagram of the local enlarged structure at point D.

[0028] In the figure: 1. Mobile base; 2. Ladder; 3. Dual-axis servo reduction motor; 4. Rotating shaft; 5. Square bearing seat; 6. Worm; 7. Worm gear; 8. Threaded shaft; 9. Mounting base; 10. Ball bearing; 11. Lifting seat; 12. Threaded bushing; 13. Mounting column; 14. Support rod; 15. Anti-rotation protrusion; 16. Left lifting platform; 17. Right lifting platform; 18. Long mounting plate; 19. Fixed plate; 20. Limit column; 21. Light curtain sensor. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] See also Figure 1-12The utility model provides the following technical solutions: a lifting platform with a locking structure, including a mobile base 1, a supporting structure, and a lifting platform structure, wherein the lifting platform structure is divided into a left lifting platform 16 and a right lifting platform 17, the supporting structure is connected to the bottom of the lifting platform structure, and a light curtain sensor 21 is installed on the opposite sides of the left lifting platform 16 and the right lifting platform 17, and a driving structure is symmetrically installed in the mobile base 1, and the driving structure is connected to the supporting structure. The two sets of driving structures can run synchronously or independently, and the driving structure includes a mounting structure installed on the inner bottom surface of the mobile base 1 and a dual-axis servo reduction motor 3. A driving component is installed on the output end of the speed motor 3. The mounting structure includes a mounting base 9 mounted on the inner bottom surface of the movable base 1. A ball bearing 10 is installed on the inner side of the mounting base 9. Its driving component includes a rotating shaft 4 mounted on the output end of the dual-axis servo reduction motor 3 and a worm gear 7 mounted on the upper end surface of the inner ring of the ball bearing 10. A worm 6 is installed on the surface of the rotating shaft 4. The worm 6 and the worm gear 7 form a gear transmission, and a threaded shaft 8 is fixedly installed on the inner side of the worm gear 7. The surface of the threaded shaft 8 is connected to the inner ring of the ball bearing 10. The threaded shaft 8 extends upward into the support structure and drives the support structure to move upward.

[0032] In this embodiment, the specific working principle is as follows: the lifting platform mainly drives the rotating shaft 4 to rotate through the dual-axis servo reduction motor 3, and then drives the threaded shaft 8 to rotate through the transmission relationship between the worm gear 7 and the worm 6, and then drives the threaded sleeve 12 to rotate, so that the threaded sleeve 12 moves upward, and drives the lifting platform structure to move upward through the support rod 14. Therefore, even if the dual-axis servo reduction motor 3 is damaged, the corresponding lifting platform structure will not be in danger of falling, thereby ensuring the life safety of construction workers and improving the stability of the lifting platform. Secondly, the two sets of dual-axis servo reduction motors 3 are controlled by the PLC program, which can be achieved through the signal feedback of the encoder in the motor. The encoder signal is analyzed and processed by the controller to achieve synchronous operation of the two motors, and can also run independently, thereby achieving simultaneous construction of two working surfaces at different heights. Therefore, this lifting platform can effectively lock and ensure the safety and stability of the equipment while also meeting the simultaneous construction requirements at different heights, thereby solving the problem that the existing lifting platform cannot more effectively ensure the stability and safety of the lifting platform, and secondly cannot achieve simultaneous operations at different heights.

[0033] According to the above, in order to ensure the smooth rotation of the rotating shaft 4, please refer to Figure 3 and Figure 4It can be seen that a square bearing seat 5 is installed on the inner side of the mobile base 1, and the inner ring of the square bearing seat 5 is connected to the end of the rotating shaft 4. What needs to be connected is that, for the sake of convenience of display, the original square bearing seat 5 and the dual-axis servo reduction motor 3 are both installed in the mobile base 1, and the dual-axis servo reduction motor 3 is installed on the bottom surface of the mobile base 1, and the square bearing seat 5 is installed on the side surface inside the mobile base 1, and then the rotation of the rotating shaft 4 is facilitated by the action of the square bearing seat 5.

[0034] In order to prevent the threaded sleeve 12 from rotating with the rotation of the threaded shaft 8, the threaded sleeve 12 can be driven to move upward when the threaded shaft 8 rotates. Figure 6 and Figure 7 It can be seen that the supporting structure includes a mobile structure and a supporting assembly. The mobile structure includes a lifting seat 11 installed on the upper end of the mobile base 1. A hole is opened in the lifting seat 11, and a threaded sleeve 12 is installed in the hole. The outer surface of the threaded sleeve 12 is provided with an anti-rotation protrusion 15. The threaded sleeve 12 extends downward and is threadedly connected to the threaded shaft 8. When the threaded shaft 8 rotates, the anti-rotation protrusion 15 will be stuck in the opening of the lifting seat 11, thereby preventing the threaded sleeve 12 from rotating with the rotation of the threaded shaft 8.

[0035] In order to effectively support the lifting platform structure, please refer to Figure 1 and Figure 2 It can be seen that the support assembly includes a mounting column 13 installed on the upper end of the threaded sleeve 12, and a support rod 14 is installed on the side of the mounting column 13. The upper end surface of the support rod 14 is connected to the lower end surface of the corresponding lifting platform.

[0036] According to the above, the lifting platform structure can be specifically referred to Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 It can be seen that light curtain sensors 21 are installed on the right side of the left lifting platform 16 and the left side of the right lifting platform 17, and a long mounting plate 18 is installed on the right side of the left lifting platform 16, and a fixed plate 19 is installed on the left side of the right lifting platform 17. A limiting column 20 is installed on the lower end face of the fixed plate 19. The limiting column 20 passes through the fixed plate 19 and extends downward to the upper end face of the mobile base 1. When the right lifting platform 17 rises, in order to ensure the stability of the right lifting platform 17, the limiting column 20 can effectively provide stability to the right lifting platform 17.

[0037] In order to facilitate the construction workers to climb, please refer to Figure 1 It can be seen that a ladder 2 is installed on the right side of the mobile base 1. In order to ensure that the support force of the support rod 14 on the corresponding lifting platform is relatively uniform, please refer to Figure 2It can be seen that the support rods 14 located on the right and left sides of the installation column 13 both extend outward, and the support rod 14 located on the right side of the installation column 13 extends to the right side of the lower end of the left lifting platform 16.

[0038] See Figure 1 It can be seen that revolving doors are installed on the left side of the left lifting platform 16 and the right side of the right lifting platform 17, and the revolving door on the left side of the left lifting platform 16 is in a closed state.

[0039] In order to protect the contact surface where the lifting platform and the support rod 14 are installed, a rubber pad is provided on the upper end surface of the support rod 14.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A lifting platform with a locking structure, comprising a movable base (1), a supporting structure, and a lifting platform structure, wherein the lifting platform structure is divided into a left lifting platform (16) and a right lifting platform (17), the supporting structure is connected to the bottom of the lifting platform structure, and light curtain sensors (21) are installed on opposite sides of the left lifting platform (16) and the right lifting platform (17), characterized in that: A driving structure is symmetrically installed in the movable base (1), and the driving structure is connected to the supporting structure. The two sets of driving structures can operate synchronously or independently. The driving structure includes a mounting structure and a dual-axis servo reduction motor (3) installed on the inner bottom surface of the movable base (1). A driving member is installed on the output end of the dual-axis servo reduction motor (3). The mounting structure includes a mounting base (9) installed on the inner bottom surface of the movable base (1). A ball bearing (10) is installed on the inner side surface of the mounting base (9). The driving member includes a rotating shaft (4) installed on the output end of the dual-axis servo reduction motor (3) and a worm gear (7) installed on the upper end surface of the inner ring of the ball bearing (10). A worm (6) is installed on the surface of the rotating shaft (4). The worm (6) and the worm gear (7) form a gear transmission. A threaded shaft (8) is fixedly installed on the inner side surface of the worm gear (7). The surface of the threaded shaft (8) is connected to the inner ring of the ball bearing (10). The threaded shaft (8) extends upward into the supporting structure and drives the supporting structure to move upward.

2. The lifting platform with a locking structure according to claim 1, characterized in that: A square bearing seat (5) is installed on the inner side of the movable base (1), and the inner ring of the square bearing seat (5) is connected to the end of the rotating shaft (4).

3. The lifting platform with a locking structure according to claim 1, characterized in that: The support structure comprises a mobile structure and a support assembly, wherein the mobile structure comprises a lifting seat (11) mounted on the upper end of a mobile base (1), a hole is provided in the lifting seat (11), a threaded sleeve (12) is mounted in the hole, an anti-rotation protrusion (15) is provided on the outer surface of the threaded sleeve (12), and the threaded sleeve (12) extends downward and is threadedly connected to the threaded shaft (8).

4. The lifting platform with a locking structure according to claim 3, characterized in that: The support assembly comprises a mounting column (13) mounted on the upper end of the threaded sleeve (12), a support rod (14) is mounted on the side of the mounting column (13), and the upper end surface of the support rod (14) is connected to the lower end surface of the corresponding lifting platform.

5. The lifting platform with a locking structure according to claim 1, characterized in that: A light curtain sensor (21) is installed on the right side of the left lifting platform (16) and the left side of the right lifting platform (17), and a long mounting plate (18) is installed on the right side of the left lifting platform (16), and a fixing plate (19) is installed on the left side of the right lifting platform (17). A limiting column (20) is installed on the lower end surface of the fixing plate (19), and the limiting column (20) passes through the fixing plate (19) and extends downward to the upper end surface of the movable base (1).

6. The lifting platform with a locking structure according to claim 1, characterized in that: A ladder (2) is installed on the right side of the mobile base (1), and the support rods (14) located on the right side and the left side of the installation column (13) extend outwards, and the support rod (14) located on the right side of the installation column (13) extends to the right side of the lower end of the left lifting platform (16).

7. The lifting platform with a locking structure according to claim 1, characterized in that: A revolving door is installed on the left side of the left lifting platform (16) and the right side of the right lifting platform (17), and the revolving door on the left side of the left lifting platform (16) is in a closed state.

8. The lifting platform with a locking structure according to claim 6, characterized in that: The upper end surface of the support rod (14) is provided with a rubber pad.

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