Lifting turnover platform

Abstract

The utility model relates to the technical field of hoisting equipment, in particular to a lifting turnover platform which comprises a bearing frame used for containing a bottom frame, two sets of frame turnover mechanisms symmetrically arranged on the two sides of the bearing frame and two sets of frame lifting mechanisms symmetrically arranged on the two sides of the bearing frame and matched with the frame turnover mechanisms. The frame lifting mechanism is provided with a lifting lead screw which is arranged in the vertical direction and used for installation of the frame turnover mechanism, and the bearing frame is provided with a clamping jaw used for fixing the bottom frame. The bottom frame welding device has the advantages that the problem that welding equipment cannot be aligned due to the fact that the angle cannot be accurately positioned when a crane assists in overturning the bottom frame is solved, and the welding efficiency of the bottom frame is improved.

Description

Technical Field

[0001] This application relates to the technical field of lifting equipment, and in particular to a lifting and tilting platform. Background Technology

[0002] The base of an electrical cabinet is a crucial load-bearing structure for the installation of electrical equipment. It provides stable support for the cabinet while also offering insulation, shock resistance, and ease of movement. The base consists of a bottom frame and a platform that directly supports the cabinet. This platform is typically constructed from multiple metal plates joined together to create a large support surface. The bottom frame, in conjunction with the platform, is relatively large and requires the welding of multiple beams for its overall construction.

[0003] In related technologies, the welding of the bottom frame is generally carried out with the assistance of a crane. After the front welding is completed, it is equivalent to the bottom frame being pre-fixed. Then, the crane is used to lift the frame, and after it is rotated to a suitable angle, it is used in conjunction with the welding equipment to complete the welding of the back side of the bottom frame.

[0004] Regarding the aforementioned technologies, the welding of the bottom frame requires repeated adjustments to the crane's posture to achieve welding operations at different angles, resulting in complex operations and low efficiency. Utility Model Content

[0005] To improve the welding efficiency of the bottom frame, which is unable to accurately position the angle due to the crane's assisted tilting mechanism, this application provides a lifting and tilting platform.

[0006] The lifting and tilting platform provided in this application adopts the following technical solution:

[0007] A lifting and tilting platform includes a support frame for placing a bottom frame, two sets of frame tilting mechanisms symmetrically arranged on both sides of the support frame, and two sets of frame lifting mechanisms symmetrically arranged on both sides of the support frame and cooperating with the frame tilting mechanisms. The frame lifting mechanism has a lifting screw arranged in a vertical direction for mounting the frame tilting mechanism, and the support frame is provided with claws for fixing the bottom frame.

[0008] By adopting the above technical solution, the frame lifting mechanism and the tilting mechanism form a vertical-rotation composite motion system, which can complete the welding of the front and back sides of the bottom frame in a single workstation. The frame is first lifted to a preset height via a lifting screw, avoiding repeated lifting-adjustment-welding cycles and shortening the single-piece operation time. The claws on the support frame can replace traditional temporary binding, preventing the risk of sheet metal shifting and falling during tilting. The frame tilting mechanism and the lifting screw work together to preset the tilting angle, such as 90° / 180° / 360°, replacing the traditional manual visual adjustment by the crane and solving the problem of unstable tilting angles. The rigid connection between the support frame and the tilting mechanism ensures no sway after the angle is locked, allowing for precise alignment of the welding equipment and improving weld consistency.

[0009] Furthermore, the frame lifting mechanism includes a fixed base, a gantry frame body disposed on the fixed base, and a lifting drive assembly disposed on the fixed base. The lifting screw is vertically disposed on the gantry frame, and the frame flipping mechanism is mounted on the lifting screw.

[0010] By adopting the above technical solution, the frame lifting mechanism uses a gantry frame and a fixed base to form a stable portal support frame. The gantry frame is anchored to the ground through the fixed base, significantly improving the overall anti-overturning stiffness and enabling it to withstand the dynamic load of the bottom frame, weighing hundreds of kilograms to tons, during the overturning process. The vertically set lifting screw is integrated with the gantry frame, avoiding torsional deformation caused by the center of gravity shift in traditional cantilever structures and ensuring the accuracy of the overturning angle. The combined design of the lifting drive component and the lifting screw allows for free height adjustment.

[0011] Furthermore, the number of lifting screws is at least two, and the lifting drive assembly includes a lifting drive motor for providing power, a rotary drive seat for cooperating with each of the lifting screws, and a speed reducer connecting the lifting drive motor and each of the rotary drive seats.

[0012] By adopting the above technical solution, the speed reducer and lifting drive motor work together to achieve efficient power transmission. At least two lifting screws achieve synchronous power distribution through the speed reducer, which increases the output torque through gear ratio to meet the lifting drive force requirements of large-size frames. Multiple screws share the weight of the bottom frame, which is especially beneficial for large-size, heavy-duty bases, preventing bending deformation or thread wear caused by overload of a single screw. The symmetrical layout of the dual screws forms a stable support structure, eliminating the movement wobble caused by manufacturing tolerances or installation errors of a single screw, and ensuring precise and controllable tilting angle.

[0013] Furthermore, the speed reducer has a transmission output end, the rotary drive seat has a transmission input end, and a transmission shaft sleeve for connection is provided between the transmission output end and the transmission input end.

[0014] By adopting the above technical solution, the drive shaft sleeve, as the connecting component between the transmission output end and the transmission input end, achieves efficient and stable power transmission through precise fit, eliminating radial runout caused by installation deviations and preventing vibration transmission to the lead screw system. As an independently detachable component, the drive shaft sleeve significantly simplifies equipment maintenance procedures. When the reducer or rotary drive seat needs repair or replacement, only the drive shaft sleeve needs to be removed to complete the component replacement, eliminating the need for complete disassembly of the drive system and shortening the time required for each maintenance session.

[0015] Furthermore, the transmission output end is provided with a first connecting protrusion on its outer peripheral wall, the transmission input end is provided with a second connecting protrusion on its outer peripheral wall, and the transmission shaft sleeve is provided with a first engaging groove for engaging with the first connecting protrusion and a second engaging groove for engaging with the second connecting protrusion on its inner wall. The first engaging groove and the second engaging groove are respectively located near the two ends of the transmission shaft sleeve.

[0016] By adopting the above technical solution, the pairing of the first connecting protrusion, the second connecting protrusion, and the locking groove forms a multi-stage torque transmission path with double locking. The locking grooves at both ends respectively restrict the axial displacement of the transmission shaft sleeve, avoiding component loosening caused by long-term vibration. The first locking groove and the second locking groove decompose the torque into two independent transmission units, reducing the risk of local stress concentration.

[0017] Furthermore, the frame flipping mechanism includes a lifting transmission sleeve sleeved on the lifting screw, a connecting housing fixed to the outside of the lifting transmission sleeve, a rotation drive motor installed on the connecting housing, and a rotating shaft passing through the connecting housing. The two ends of the rotating shaft are respectively used to connect to the drive motor and the support frame.

[0018] By adopting the above technical solution, the lifting transmission sleeve and the rotation drive motor are integrated into the same connecting housing to form an integrated power unit. The drive motor and the transmission sleeve are arranged coaxially, which shortens the power transmission path. The rotating shaft is directly connected to the drive motor, which reduces transmission error.

[0019] Furthermore, the support frame includes a frame body and connecting ears located on both sides of the frame body for the rotating shaft to pass through. The end of the rotating shaft away from the rotating drive motor passes through the connecting ear and is rotatably connected to the connecting ear.

[0020] By adopting the above technical solution, the connecting ear serves as the mounting carrier for the rotating shaft on the frame body, enabling rapid and accurate positioning of the rotating shaft, avoiding eccentricity errors caused by traditional welding or bolt connections, and improving connection stability.

[0021] Furthermore, the frame body is provided with a limiting side plate near the edge, and a limiting disc for cooperating with the limiting side plate is sleeved on the rotating shaft.

[0022] By adopting the above technical solution, the mechanical hard limiting of the limiting side plate and the limiting plate can avoid over- or under-tilting problems caused by electrical signal delay. The limiting side plate is installed near the edge of the frame body, and the limiting plate is sleeved on the rotating shaft and cooperates with the limiting side plate. When the frame body shows a tendency to tilt along the length direction during the tilting process, the limiting plate will contact the limiting side plate first, forming a hard constraint and directly preventing the frame body from tilting further.

[0023] Furthermore, the connecting housing is provided with a rotating seat through which the rotating shaft passes and is rotatably connected.

[0024] By adopting the above technical solution, the rotating seat can control the axial movement of the rotating shaft and avoid welding position deviation caused by axial displacement.

[0025] Furthermore, the connecting housing is provided with a first fixing plate and a second fixing plate for fixing the rotation drive motor. The first fixing plate is fixedly connected to the outer wall of the connecting housing, and the second fixing plate is fixedly connected to both the first fixing plate and the rotation drive motor.

[0026] By adopting the above technical solution, the first fixing plate is rigidly connected to the outer wall of the connecting housing to form the main support structure for motor installation. The second fixing plate is fixed to the first fixing plate and the motor flange surface, dispersing the radial and axial forces generated by the motor to the connecting housing and avoiding local stress concentration.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The frame lifting mechanism and the tilting mechanism form a vertical-rotation composite motion system, which can complete the welding of the front and back sides of the bottom frame in a single workstation. By preset tilting angles (such as 90° / 180° / 360°), the problem of unstable tilting angles is solved, replacing the manual visual adjustment of traditional cranes. This ensures that the welding equipment can be accurately aligned, improves the consistency of the weld, and first lifts the frame to the preset height through the lifting screw, avoiding the repeated cycle of lifting-adjusting-welding, shortening the single-piece operation time, and improving the welding efficiency of the electrical cabinet base.

[0029] 2. The frame lifting mechanism utilizes a gantry frame and a fixed base to form a stable portal support frame. The gantry frame is anchored to the ground via the fixed base, significantly improving the overall anti-overturning rigidity. It can withstand the dynamic load of the bottom frame, weighing hundreds of kilograms to tons, during the tilting process. At least two lifting screws achieve synchronous power distribution through a reduction gearbox. Multiple screws share the weight of the bottom frame, preventing bending deformation or thread wear caused by overload of a single screw. The symmetrical layout of the dual screws forms a stable support structure, eliminating the movement sway caused by manufacturing tolerances or installation errors of a single screw, ensuring precise and controllable tilting angle. Simultaneously, the rotating base can control the axial movement of the rotating shaft, preventing welding position misalignment due to axial displacement.

[0030] 3. As an independent and detachable component, the drive shaft sleeve allows for easy replacement of the reducer or drive unit when maintenance is required. This eliminates the need for complete disassembly of the drive system, significantly reducing maintenance time and simplifying the equipment maintenance process. The claws on the support bracket replace traditional temporary bindings, preventing the risk of sheet metal displacement and falling during tilting. The mechanical hard limit of the limiting side plate and limiting disc prevents over- or under-tilting caused by electrical signal delays. When the frame body tilts along its length during tilting, the limiting disc contacts the limiting side plate first, forming a hard constraint and directly preventing further tilting. Furthermore, the first and second fixing plates on the connecting housing disperse the radial and axial forces generated by the drive motor, preventing localized stress concentration and improving equipment operational safety. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a lifting and tilting platform and its bottom frame according to an embodiment of this application.

[0032] Figure 2 This is a partial structural schematic diagram of a lifting and tilting platform according to an embodiment of this application.

[0033] Figure 3 This is an exploded view of the frame body and claws of the support bracket in the embodiment of this application.

[0034] Figure 4 This is a partial structural schematic diagram of the frame lifting mechanism in an embodiment of this application.

[0035] Figure 5 This is a partial structural schematic diagram of the frame flipping mechanism in an embodiment of this application.

[0036] Figure 6 yes Figure 4 Enlarged schematic diagram of the transmission input end, transmission output end and transmission shaft sleeve of part A.

[0037] Figure 7This is a cross-sectional structural diagram of the transmission shaft sleeve according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Frame lifting mechanism; 11. Fixed base; 12. Gantry frame body; 13. Lifting screw; 14. Lifting drive assembly; 141. Lifting drive motor; 142. Rotation drive seat; 1421. Transmission input end; 1422. Second connecting protrusion; 143. Reducer; 1431. Transmission output end; 1432. First connecting protrusion; 144. Transmission shaft sleeve; 1441. First snap-fit ​​groove; 144 2. Second snap-fit ​​groove; 2. Frame flipping mechanism; 21. Lifting transmission sleeve; 22. Connecting housing; 221. Rotating seat; 23. Rotation drive motor; 231. First fixing plate; 232. Second fixing plate; 24. Rotating shaft; 241. Limiting plate; 3. Support bracket; 31. Frame body; 311. Sleeve; 312. Connecting ear; 313. Limiting side plate; 32. Claw; 33. Screw; 34. Pad; 4. Bottom frame. Detailed Implementation

[0039] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1-7 The present application will be further described in detail with reference to the embodiments.

[0040] This application discloses a lifting and tilting platform. (Refer to...) Figure 1 and Figure 2 The lifting and tilting platform includes a frame lifting mechanism 1, a frame tilting mechanism 2, and a support frame 3. The support frame 3 is used to place and limit the bottom frame 4, the frame lifting mechanism 1 is used to move the bottom frame 4 vertically, and the frame tilting mechanism 2 is capable of tilting the bottom frame 4. In this embodiment, the maximum tilting angle of the frame tilting mechanism 2 is 360°.

[0041] Reference Figure 2 and Figure 3 The support frame 3 includes a frame body 31 and claws 32 detachably connected to both sides of the frame body 31 for fixing the bottom frame 4. In this embodiment, there are four claws 32, and each claw 32 is arranged in an L-shape. The frame body 31 is vertically arranged on the top side and fixedly connected to a sleeve 311 for the claws 32 to insert into. After the claws 32 are inserted into the sleeve 311, they are locked and fixed by screws 33 and pads 34, thereby fixing the bottom frame 4 to the support frame 3 and preventing the bottom frame 4 from falling off when flipped.

[0042] Reference Figure 1 and Figure 4In this embodiment, there are two frame lifting mechanisms 1, which are symmetrically arranged on both sides of the support frame 3. There are also two frame tilting mechanisms 2, which are respectively installed on the two sets of frame lifting mechanisms 1.

[0043] The frame lifting mechanism 1 includes a fixed base 11, a gantry frame 12 mounted on the fixed base 11, lifting screws 13 mounted on the gantry frame, and a lifting drive assembly 14 mounted on the fixed base 11. In this embodiment, each frame lifting mechanism 1 is provided with two lifting screws 13, each lifting screw 13 being vertically arranged and rotatably connected to the gantry frame. The lifting drive assembly 14 is located on the fixed base 11 near the gantry frame, thereby cooperating with the lifting screws 13 to drive the lifting screws 13 to rotate axially.

[0044] Combination Figure 5 The frame flipping mechanism 2 includes a lifting transmission sleeve 21 sleeved on the lifting screw 13 and threadedly engaged with the lifting screw 13, a connecting housing 22 fixedly connected to the outside of the lifting transmission sleeve 21, a rotation drive motor 23 installed on the outside of the connecting housing 22, and a rotating shaft 24 passing through the connecting housing 22 and driven by the rotation drive motor 23.

[0045] The connecting housing 22 is provided with a first fixing plate 231 and a second fixing plate 232 for fixing the rotary drive motor 23. The first fixing plate 231 is fixedly connected to the outer wall of the connecting housing 22 to form the main support structure for motor installation. The second fixing plate 232 is fixedly connected to both the first fixing plate 231 and the flange face of the rotary drive motor 23, thereby dispersing the radial and axial forces generated by the motor to the connecting housing 22 and avoiding local stress concentration.

[0046] The top cover of the connecting housing 22 is fixedly connected to a rotating seat 221 for the rotating shaft 24 to pass through and rotate. The frame body 31 is vertically arranged on the upper side and fixedly connected to two symmetrically arranged connecting ears 312. The two ends of the rotating shaft 24 are used to connect to the drive motor and the support frame 3, respectively. The end of the rotating shaft away from the rotating drive motor 23 passes through the rotating seat 221 and the connecting ears 312 in sequence and is rotatably connected to both the rotating seat 221 and the connecting ears 312.

[0047] A limiting side plate 313 is vertically and fixedly connected to the frame body 31 near the edge. A limiting disc 241 for co-axially fitting with the limiting side plate 313 is coaxially sleeved and fixedly connected to the rotating shaft 24. When the frame body 31 tilts along its length during the flipping process, the limiting disc 241 will first contact the limiting side plate 313, forming a hard constraint and directly preventing the frame body 31 from tilting further.

[0048] Reference Figure 4 and Figure 6 The lifting drive assembly 14 includes a lifting drive motor 141 for providing power, two rotary drive seats 142 for cooperating with each lifting screw 13, and a speed reducer 143 connected between the lifting drive motor 141 and the two rotary drive seats 142.

[0049] Combination Figure 7 The speed reducer 143 has a transmission output end 1431, and the rotary drive seat 142 has a transmission input end 1421. A transmission shaft sleeve 144 is provided between the transmission output end 1431 and the transmission input end 1421 for connection. The transmission output end 1431 has a first connecting protrusion 1432 on its outer peripheral wall, and the transmission input end 1421 has a second connecting protrusion 1422 on its outer peripheral wall. The transmission shaft sleeve 144 has a first engaging groove 1441 for engaging with the first connecting protrusion 1432 and a second engaging groove 1442 for engaging with the second connecting protrusion 1422 on its inner wall. The first engaging groove 1441 and the second engaging groove 1442 are located near the two ends of the transmission shaft sleeve 144.

[0050] The implementation principle of a lifting and tilting platform according to an embodiment of this application is as follows: The support frame 3 consists of a frame body 31 and detachably connected claws 32. The claws 32 are L-shaped, four in number, and are inserted into the vertically arranged sleeve 311 on the top side of the frame body 31, and locked in place by screws 33 and pads 34. This design facilitates the installation and disassembly of the claws 32, while firmly securing the bottom frame 4 and preventing it from falling off during tilting. There are two sets of frame lifting mechanisms 1, symmetrically arranged on both sides of the support frame 3. Each set includes a fixed base 11, a gantry frame 12, two vertically arranged lifting screws 13, and a lifting drive assembly 14. The gantry frame 12 is fixed to the fixed base 11, the lifting screws 13 are rotatably connected to the gantry frame, and the lifting drive assembly 14 is positioned close to the gantry frame and cooperates with the lifting screws 13. There are two sets of frame tilting mechanisms 2, respectively installed on the two sets of frame lifting mechanisms 1. Each frame tilting mechanism 2 includes a lifting transmission sleeve 21, a connecting housing 22, a rotation drive motor 23, and a rotating shaft 24. The lifting transmission sleeve 21 is sleeved on the lifting screw 13, the connecting housing 22 is fixed outside the lifting transmission sleeve 21, the rotation drive motor 23 is installed outside the connecting housing 22, and the rotating shaft 24 passes through the connecting housing 22 and is driven by the rotation drive motor 23.

[0051] The lifting drive motor 141 in the lifting drive assembly 14 provides power, which is transmitted to the rotary drive seat 142 through the reducer commutator 143. The rotary drive seat 142 cooperates with the lifting screw 13, driving the lifting screw 13 to rotate axially. Since the lifting transmission sleeve 21 is threadedly engaged with the lifting screw 13, the rotation of the lifting screw 13 will drive the lifting transmission sleeve 21 to move vertically, thereby realizing the lifting of the bottom frame 4. The rotary drive motor 23 drives the rotating shaft 24 to rotate through the connecting housing 22, realizing the flipping of the bottom frame 4. The first fixing plate 231 and the second fixing plate 232 on the connecting housing 22 disperse the radial and axial forces generated by the rotary drive motor 23 to the connecting housing 22, avoiding local stress concentration. The two ends of the rotating shaft 24 are connected to the rotary drive motor 23 and the support frame 3 respectively, ensuring the stability of power transmission.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lifting and tilting platform, characterized in that: It includes a support frame (3) for placing the bottom frame (4), two sets of frame flipping mechanisms (2) symmetrically arranged on both sides of the support frame (3), and two sets of frame lifting mechanisms (1) symmetrically arranged on both sides of the support frame (3) and cooperating with the frame flipping mechanisms (2). The frame lifting mechanism (1) has a lifting screw (13) arranged in the vertical direction for the frame flipping mechanism (2) to be installed. The support frame (3) is provided with a claw (32) for fixing the bottom frame (4).

2. The lifting and tilting platform according to claim 1, characterized in that: The frame lifting mechanism (1) includes a fixed base (11), a gantry frame (12) disposed on the fixed base (11), and a lifting drive assembly (14) disposed on the fixed base (11). The lifting screw (13) is vertically disposed on the gantry frame, and the frame flipping mechanism (2) is mounted on the lifting screw (13).

3. The lifting and tilting platform according to claim 2, characterized in that: The number of lifting screws (13) is at least two, and the lifting drive assembly (14) includes a lifting drive motor (141) for providing power, a rotary drive seat (142) for cooperating with each of the lifting screws (13), and a speed reducer (143) connected between the lifting drive motor (141) and each of the rotary drive seats (142).

4. A lifting and tilting platform according to claim 3, characterized in that: The speed reducer (143) has a transmission output end (1431), the rotation drive seat (142) has a transmission input end (1421), and a transmission shaft sleeve (144) for connection is provided between the transmission output end (1431) and the transmission input end (1421).

5. A lifting and tilting platform according to claim 4, characterized in that: The transmission output end (1431) has a first connecting protrusion (1432) on its outer peripheral wall, and the transmission input end (1421) has a second connecting protrusion (1422) on its outer peripheral wall. The transmission sleeve (144) has a first engaging groove (1441) for engaging with the first connecting protrusion (1432) and a second engaging groove (1442) for engaging with the second connecting protrusion (1422) on its inner wall. The first engaging groove (1441) and the second engaging groove (1442) are located near the two ends of the transmission sleeve (144).

6. The lifting and tilting platform according to claim 1, characterized in that: The frame flipping mechanism (2) includes a lifting transmission sleeve (21) sleeved on the lifting screw (13), a connecting housing (22) fixed to the outside of the lifting transmission sleeve (21), a rotation drive motor (23) installed on the connecting housing (22), and a rotating shaft (24) passing through the connecting housing (22). The two ends of the rotating shaft (24) are respectively used to connect to the drive motor and the support frame (3).

7. A lifting and tilting platform according to claim 6, characterized in that: The support frame (3) includes a frame body (31) and connecting ears (312) provided on both sides of the frame body (31) for the rotating shaft (24) to pass through. The end of the rotating shaft (24) away from the rotating drive motor (23) passes through the connecting ear (312) and is rotatably connected to the connecting ear (312).

8. A lifting and tilting platform according to claim 7, characterized in that: The frame body (31) is provided with a limiting side plate (313) near the edge, and a limiting disc (241) for cooperating with the limiting side plate (313) is sleeved on the rotating shaft (24).

9. A lifting and tilting platform according to claim 6, characterized in that: The connecting housing (22) is provided with a rotating seat (221) through which the rotating shaft (24) passes and is rotatably connected.

10. A lifting and tilting platform according to claim 6, characterized in that: The connecting housing (22) is provided with a first fixing plate (231) and a second fixing plate (232) for fixing the rotation drive motor (23). The first fixing plate (231) is fixedly connected to the outer wall of the connecting housing (22), and the second fixing plate (232) is fixedly connected to both the first fixing plate (231) and the rotation drive motor (23).

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