Frame lifting device

Abstract

The utility model provides a frame lifting device, which relates to the technical field of lifters and comprises lifting scissors forks arranged on a mounting platform in pairs, left scissors forks of the lifting scissors forks are hinged to the mounting platform, right scissors forks of the lifting scissors forks are connected with a motor through lead screws, a bearing platform is arranged at the tops of the lifting scissors forks, and bottom plates are fixedly arranged on two sides of the bearing platform. A positioning plate is movably arranged on the bottom plate, a fixing plate is arranged on one side of the positioning plate, a bolt penetrates through the fixing plate, the tail end of the bolt makes contact with the positioning plate, and lifting stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically to a vehicle frame lifting device. Background Technology

[0002] The announcement CN216687315U describes a lifting device for assembling a bus frame. This device uses compressed air for lifting and controls the jacks' up-and-down movement via an electromagnetic controller. While it can adjust the frame height, it suffers from problems such as unstable air pressure and non-linear jack lifting. To address this non-linearity, a structure using a pair of scissor lifts has emerged on the market. For details, refer to the announcement CN118372009A, which describes a six-degree-of-freedom assembly device for connecting aero-engine rotors. This device uses a double-scissor lift and pitch mechanism to improve the stability of the lifting motion.

[0003] While the above solution can improve the stability of lifting, the following problems still exist when lifting the bus frame:

[0004] The existing lifting structure cannot effectively and stably support the bus frame. The bus frame is placed directly on the scissor lift, and the large weight of the bus frame causes it to shift during the lifting process. Utility Model Content

[0005] To achieve the above objectives, one or more embodiments of this utility model provide the following technical solutions.

[0006] This utility model proposes a vehicle frame lifting device, including a pair of lifting scissor forks mounted on an installation platform. The left scissor fork is hinged to the installation platform, and the right scissor fork is connected to a motor via a lead screw. A receiving platform is provided on the top of the lifting scissor fork, and base plates are fixedly provided on both sides of the receiving platform. A positioning plate is movably provided on the base plate, and a fixing plate is provided on one side of the positioning plate. A bolt is provided through the fixing plate, and the end of the bolt contacts the positioning plate.

[0007] A further configuration involves installing an adjustment plate at the bottom of the lifting scissor lift, and fixing an I-beam to the top of the mounting platform. The lifting scissor lift is then adjusted and mounted on the I-beam.

[0008] Further configuration involves setting several positioning holes along the length of the I-beam, with screw holes corresponding to the positioning holes on the adjusting plate, and positioning pins inserted through the screw holes and positioning holes.

[0009] Further configuration includes a number of bolt holes evenly spaced along the length of the frame on the fixing plate, and a slot on the top of the positioning plate.

[0010] A further configuration involves a slide bar at the bottom of the right scissor lift, which slides on the mounting platform.

[0011] Further configuration involves a threaded hole in the slide bar, with the threaded hole fitted with a lead screw.

[0012] A further configuration is provided, wherein a speed reducer is provided at the end of the motor.

[0013] A further configuration is that the reducer is connected to a bearing housing via a rotating shaft, and a self-aligning roller bearing is installed inside the bearing housing. The self-aligning roller bearing is connected to a lead screw via the rotating shaft.

[0014] Further configuration involves setting the lifting scissor lift along the length of the mounting platform.

[0015] Further configuration involves connecting the motor to the control box via wires.

[0016] The beneficial effects of one or more of the above technical solutions:

[0017] The positioning plate can be pressed onto the lifting device by tightening the bolts. The frame is placed in the slot of the positioning plate. Depending on the different frame structures, multiple positioning plates are set along the fixed plate. The frame is supported by the slots of multiple positioning plates at the same time, which can improve the repeatability of the frame positioning and prevent displacement. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a top view of the present invention.

[0021] Figure 3 This is a side view of the present invention.

[0022] Figure 4 for Figure 3 Enlarged view of the structure at point I.

[0023] Figure 5 for Figure 3 Enlarged view of the structure at point II.

[0024] Figure 6 This is a schematic diagram of the installation structure of this utility model with the vehicle frame.

[0025] In the diagram, 1 is the control box; 2 is the motor; 3 is the reducer; 4 is the self-aligning roller bearing; 41 is the bearing housing; 5 is the lead screw; 6 is the lifting scissor fork; 61 is the left scissor fork; 62 is the right scissor fork; 621 is the slide bar; 63 is the lifting platform; 7 is the positioning plate; 8 is the bolt; 9 is the nut; 10 is the base plate; 11 is the fixing plate; 12 is the reinforcing plate; 13 is the adjusting plate; 14 is the I-beam; 141 is the positioning hole; 15 is the positioning pin; and 16 is the frame. Detailed Implementation

[0026] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0027] A vehicle frame lifting device, as shown in the reference Figure 1 and Figure 2 This includes a pair of lifting scissor lifts 6 mounted on an installation platform. The left scissor lift 61 is hinged to the installation platform, and the right scissor lift 62 is connected to the motor 2 via a lead screw 5. A receiving platform is provided on the top of the lifting scissor lift 6. (Refer to...) Figures 3 to 6 A base plate 10 is fixedly installed on both sides of the receiving platform. A positioning plate 7 is movably installed on the base plate 10. A reinforcing plate 12 is fixedly installed between the base plate 10 and the fixed plate 11 to improve the connection strength between the base plate 10 and the fixed plate 11. A fixed plate 11 is installed on one side of the positioning plate 7. A bolt 8 is installed through the fixed plate 11, and the end of the bolt 8 contacts the positioning plate 7.

[0028] An adjustment plate 13 is installed at the bottom of the lifting scissor fork 6, and an I-beam 14 is fixedly installed on the top of the mounting platform. The lifting scissor fork 6 is mounted on the I-beam 14 via the adjustment plate 13. Several positioning holes 141 are provided along the length of the I-beam 14. The adjustment plate 13 has screw holes corresponding to the positioning holes 141. A positioning pin 15 is provided through the screw holes and the positioning holes 141. Two lifting scissor forks 6 are placed on the I-beam 14 with positioning holes at the same time. The positioning pin 15 passes through the adjustment plate 13 connected to the lifting scissor fork 66. The adjustment can be adjusted according to the different lengths of the frame 16 to improve the lifting stability.

[0029] The fixing plate 11 has several bolt holes 111 evenly distributed along the length of the frame 16. The top of the positioning plate 7 has a slot 71, which can be connected to the side beam or other components of the bus frame. The positioning plate 7 is placed at the corresponding stress point according to the different bus frame structures.

[0030] The bottom of the right scissor lift 62 is equipped with a sliding rod, which is slidably mounted on the mounting platform. The sliding rod 621 has a threaded hole, and the threaded hole is fitted with the lead screw 5. The sliding rod can be a trapezoidal lead screw nut with a Tr48*6 trapezoidal thread, which has a certain stopping force and load-bearing capacity, and can be used in high-load, high-precision transmission systems.

[0031] A reducer 3 is installed at the end of motor 2. The reducer 3 is connected to bearing housing 4 through a rotating shaft. A self-aligning roller bearing is installed in bearing housing 4. The self-aligning roller bearing is connected to lead screw 5 through a rotating shaft. The lifting scissor fork 6 is set along the length of the installation platform. Motor 2 is connected to control box 1 through wires. Control box 1 is connected to motor 2 with brake, which can control the forward and reverse rotation of motor. Motor 2 is connected to worm gear reducer 3. Reducer 3 is connected to lead screw 5. Trapezoidal lead screw nut 5 is connected to scissor fork lifting scissor fork 6. In order to prevent axial force from acting directly on reducer 3, lead screw 5 transmits force to the base of lifting scissor fork 6 through self-aligning roller bearing and bearing housing 4.

[0032] The frame support and lifting process is as follows:

[0033] The fixing plate 11 has several bolt holes 111 evenly spaced along the length of the frame 16. The positioning plate 7 has a slot 71 on its top. The position of the positioning plate 7 is adjusted according to the stress points corresponding to different bus frame structures. The positioning plate 7 is manually moved along the fixing plate 11. When fixing is required, the positioning plate 7 is aligned with the bolt holes 111. Then, the positioning plate 7 is pressed onto the lifting platform 63 by the cooperation of bolts 8 and nuts 9. The slot 71 can receive the side beams or other components of the bus frame. Then, the control box 1 is engaged, and the drive motor 2 drives the lead screw 5 to rotate. Since the right scissor fork 62 is slidably mounted on the lead screw 5 via a slide rod 621, the right scissor fork 62 and the left scissor fork 61 rotate and lift the frame.

[0034] The adjustment process for positioning plate 7 is as follows:

[0035] The base plate 10 is fixed on both sides of the receiving platform. The positioning plate 7 is placed in the position that needs to be fixed. Then, the bolt 8 is inserted through the fixing plate 11. The end of the bolt 8 is pressed against the positioning plate 7 and fixed with a nut.

[0036] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A frame lifting device, characterized in that, The lifting scissors are arranged on the mounting platform in pairs, the left scissors of the lifting scissors are hinged to the mounting platform, the right scissors of the lifting scissors are connected with the motor through a lead screw, the top of the lifting scissors is provided with a receiving platform, the receiving platform is fixedly provided with a bottom plate on both sides, the bottom plate is movably provided with a positioning plate, the positioning plate is provided with a fixed plate on one side, a bolt is arranged through the fixed plate, and the end of the bolt is in contact with the positioning plate.

2. A frame lifting device according to claim 1, characterised in that The bottom of the lifting scissors is provided with an adjusting plate, the top of the mounting platform is fixedly provided with an I-shaped steel, and the lifting scissors are adjusted and mounted on the I-shaped steel.

3. A frame lifting device according to claim 2, wherein A plurality of positioning holes are arranged along the length direction of the I-shaped steel, the adjusting plate is provided with screw holes corresponding to the positioning holes, and a positioning pin is arranged through the screw holes and the positioning holes.

4. A frame lifting device according to claim 1, wherein The fixed plate is uniformly provided with a plurality of bolt holes along the length direction of the frame.

5. A frame lifting device as claimed in claim 1, wherein The bottom of the right scissors is provided with a sliding rod, and the sliding rod is slidingly arranged on the mounting platform.

6. A frame lifting device according to claim 1, wherein The sliding rod is provided with a threaded hole, and the threaded hole is sleeved with a lead screw.

7. A frame lifting device as claimed in claim 1, wherein The end of the motor is provided with a speed reducer.

8. A frame lifting device according to claim 7, characterised in that The speed reducer is connected with a bearing seat through a rotating shaft, the bearing seat is provided with a self-aligning roller bearing, and the self-aligning roller bearing is connected with a lead screw through a rotating shaft.

9. A frame lifting device according to claim 1, wherein The lifting scissors are arranged along the length direction of the mounting platform.

10. A frame lifting device according to claim 1, wherein The motor is connected with a control box through a wire.

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