Heavy-duty lifting platform

Abstract

This utility model discloses a heavy-duty lifting platform, including a lower base, a scissor lift frame mounted on the lower base, an upper base at the upper end of the scissor lift frame, a loading plate mounted on the upper end of the upper base, a hydraulic press mounted on the scissor lift frame, a first roller at the end of the fixed shaft at the lower end of the scissor lift frame, a first limiting guide rail adapted to the first roller on the lower base, a plurality of limiting pin cylinders on the upper side wall of the first limiting guide rail, a limiting pin adapted to the first roller movably inserted into the limiting pin cylinder, and a insertion hole for the limiting pin on the lower side wall of the first limiting guide rail. By setting limiting pin cylinders on the first limiting guide rail of the lower base to install limiting pins, when the hydraulic press lifts the loading plate to a high position, the limiting pins can be lowered to fall into the first limiting guide rail to limit the first roller, thereby ensuring that the loading plate remains horizontal under heavy load.

Description

Technical Field

[0001] This utility model relates to the field of lifting platform technology, and in particular to heavy-duty lifting platforms. Background Technology

[0002] The main function of an elevator platform is to move loaded items from a low place to a high place or vice versa. During the replacement of aircraft engines or propellers, multiple people are required to work together, and the elevator platform needs to have a high load-bearing capacity. Existing elevator platforms have poor heavy-load capacity and are prone to tilting under heavy load, making it impossible for the platform to remain level and posing a significant safety risk. Utility Model Content

[0003] The purpose of this utility model is to provide a heavy-duty lifting platform to solve the problem that existing lifting platforms are prone to tilting under heavy loads, making it impossible for the lifting platform to remain level and posing a significant safety risk.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A heavy-duty lifting platform includes a lower base, on which a scissor lift frame is mounted. An upper base is located at the upper end of the scissor lift frame, and a loading plate is mounted on the upper end of the upper base. A hydraulic press is mounted on the scissor lift frame. A first roller is located at the end of the fixed shaft at the lower end of the scissor lift frame. The lower base has a first limiting guide rail adapted to the first roller. Multiple limiting pin cylinders are located on the upper side wall of the first limiting guide rail. Limiting pins adapted to the first roller are movably inserted into the limiting pin cylinders. Insertion holes for the limiting pins are located on the lower side wall of the first limiting guide rail.

[0006] Furthermore, the scissor lift frame includes a first lifting fork and a second lifting fork that cooperate with each other. The first lifting fork and the second lifting fork are connected by a connecting shaft. The upper end of the first lifting fork is hinged to the upper base, and the lower end of the first lifting fork is hinged to a first fixed shaft. The end of the first fixed shaft is provided with a first roller. The lower end of the second lifting fork is hinged to the lower base, and the upper end of the second lifting fork is hinged to a second fixed shaft. The end of the second fixed shaft is provided with a second roller. The upper base is provided with a second limiting guide rail adapted to the second roller. An installation shaft is provided on the second lifting fork above the connecting shaft. A hydraulic press is provided between the first fixed shaft and the installation shaft.

[0007] Furthermore, traction mechanisms are provided on both the front and rear sides of the lower base. The traction mechanism includes a traction frame, a traction wheel at the lower end of the traction frame, and a traction rod that is detachably connected to the traction frame.

[0008] Furthermore, the lower base has multiple movable feet on its left and right sides, and L-shaped connecting arms are provided on the threaded adjustment rods of the movable feet. The outer side wall of the lower base has multiple mounting brackets that are adapted to the L-shaped connecting arms. The vertical part of the L-shaped connecting arm is hinged to the mounting bracket. The mounting bracket has locking holes on the upper and lower sides of the hinge shaft, and locking pins adapted to the locking holes are inserted into the L-shaped connecting arm.

[0009] Furthermore, a loading plate is mounted on the upper end of the base via a weighing sensor.

[0010] Furthermore, the upper end of the loading platform is equipped with a guardrail, which consists of a fixed railing, a ladder, and a gate. The ladder and the fixed railing are detachably connected.

[0011] Furthermore, the fixed railing is equipped with hooks adapted to the ladder, the side wall of the ladder is equipped with insert rods, the side wall of the loading plate is equipped with insert tubes adapted to the insert rods, and the lower end of the ladder is equipped with anti-slip foot braces via lifting rods.

[0012] Furthermore, both the loading plate and the side wall of the lower base are equipped with fixing rings.

[0013] Furthermore, the upper end of the lower base is provided with multiple support columns that are adapted to the loading plate, and the upper end of the support columns is provided with shock-absorbing pads.

[0014] This utility model has the following advantages:

[0015] 1. By setting a limit pin cylinder on the first limit guide rail of the lower base to install the limit pin, when the hydraulic press lifts the loading plate to a high position, the limit pin can be lowered to make it fall into the first limit guide rail to limit the first roller, thereby ensuring that the loading plate of the lifting platform remains horizontal under heavy load.

[0016] 2. The first fixed shaft ensures the synchronization of the two support points at the lower end of the first lifting fork, and the second fixed shaft ensures the synchronization of the two support points at the upper end of the second lifting fork. Together with the limit pin, the first roller is limited, effectively ensuring that the loading plate remains horizontal under heavy load and ensuring operational safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a front view of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the upper base and the weighing sensor.

[0020] Figure 4 This is a structural diagram of the loading plate and the fence.

[0021] In the diagram, 1-lower base, 2-upper base, 3-loading plate, 4-hydraulic press, 5-first roller, 6-first limit guide rail, 7-limit pin cylinder, 8-limit pin, 9-insertion hole, 10-first lifting fork, 11-second lifting fork, 12-connecting shaft, 13-first fixed shaft, 14-second limit guide rail, 15-installation shaft, 16-traction frame, 17-traction wheel, 18-traction rod, 19-movable foot, 20-L-shaped connecting arm, 21-installation frame, 22-locking hole, 23-locking pin, 24-weighing sensor, 25-fixed railing, 26-ladder, 27-gate, 28-anti-slip foot support, 29-fixed ring, 30-support column, 31-insertion tube. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] refer to Figure 1-4 As shown, one embodiment of this utility model is as follows:

[0029] A heavy-duty lifting platform includes a lower base 1, on which a scissor lift frame is mounted. An upper base 2 is located at the upper end of the scissor lift frame, and a loading plate 3 is mounted on the upper end of the upper base 2. A hydraulic press 4 is mounted on the scissor lift frame. A first roller 5 is located at the end of the fixed shaft at the lower end of the scissor lift frame. The lower base 1 is provided with a first limiting guide rail 6 adapted to the first roller 5. Multiple limiting pin cylinders 7 are provided on the upper side wall of the first limiting guide rail 6. Limiting pins 8 adapted to the first roller 5 are movably inserted into the limiting pin cylinders 7. Insertion holes 9 adapted to the limiting pins 8 are provided on the lower side wall of the first limiting guide rail 5.

[0030] By installing a limit pin cylinder 7 on the first limit guide rail 6 of the lower base to install a limit pin 8, when the hydraulic press lifts the loading plate to a high position, the limit pin 8 can be lowered into the first limit guide rail 6 to limit the first roller 5, thereby ensuring that the loading plate of the lifting platform remains horizontal under heavy load. This allows for simultaneous work by multiple people during aircraft engine or propeller replacement, effectively ensuring operational safety. The positions of the limit pin cylinder 7 and the limit pin 8 are set at commonly used high points of the lifting platform.

[0031] Specifically, the scissor lift frame includes a first lifting fork 10 and a second lifting fork 11 that cooperate with each other. The first lifting fork 10 and the second lifting fork 11 are connected by a connecting shaft 12. The upper end of the first lifting fork 10 is hinged to the upper base 2, and the lower end of the first lifting fork 10 is hinged to a first fixed shaft 13. The end of the first fixed shaft 13 is provided with a first roller 5. The lower end of the second lifting fork 11 is hinged to the lower base 1, and the upper end of the second lifting fork 11 is hinged to a second fixed shaft. The end of the second fixed shaft is provided with a second roller. The upper base 2 is provided with a second limiting guide rail 14 adapted to the second roller. The second lifting fork 11 is provided with a mounting shaft 15 located above the connecting shaft 12. The hydraulic press 4 is provided between the first fixed shaft 13 and the mounting shaft 15.

[0032] like Figure 1 As shown, a first fixed shaft 13 is hinged to the lower end of the first lifting fork 10 for mounting the hydraulic press 4. To improve the heavy-duty capacity of the lifting platform, the number of hydraulic presses 4 is specifically set to two. The first fixed shaft 13 ensures the synchronization of the two support points at the lower end of the first lifting fork 10, and the second fixed shaft ensures the synchronization of the two support points at the upper end of the second lifting fork 11. Together with the limit pin 8, the first roller 5 is limited, effectively ensuring that the loading plate remains horizontal under heavy load and ensuring operational safety.

[0033] The lower base 1 is provided with traction mechanisms on both the front and rear sides. The traction mechanism includes a traction frame 16, and the lower end of the traction frame 13 is provided with a traction wheel 17. The traction frame 16 is detachably connected to a traction rod 18.

[0034] The traction mechanisms on both sides enhance the equipment's practicality; traction rods 18 can be connected to the front or rear sides as needed to allow the lifting platform to move. For example... Figure 1 As described in section 2, the traction frame 16 is provided with a connecting pipe adapted to the traction rod 18, and the connecting pipe is provided with a pin hole. The traction frame 16 and the traction rod 18 are detachably connected by a pin, which makes the installation convenient and quick.

[0035] Furthermore, the lower base 1 has multiple movable feet 19 on its left and right sides. The threaded adjustment rod of the movable feet 19 is provided with an L-shaped connecting arm 20. The outer side wall of the lower base 1 is provided with multiple mounting brackets 21 that are adapted to the L-shaped connecting arm 20. The vertical part of the L-shaped connecting arm 20 is hinged to the mounting bracket 21. The mounting bracket 21 is provided with locking holes 22 on the upper and lower sides of the hinge axis. The L-shaped connecting arm 20 is provided with locking pins 23 that are adapted to the locking holes.

[0036] Mounting bracket 21 includes mounting plates arranged opposite each other. The vertical part of L-shaped connecting arm 20 is located between the mounting plates and is hinged to the mounting plates via a hinge shaft. When supporting, the L-shaped connecting arm 20 is rotated and a locking pin 23 is inserted into the locking hole 22 on the lower side to fix the L-shaped connecting arm 20. The distance of the movable foot 19 is adjusted by the threaded adjustment rod to achieve stable support for the lifting platform. When the lifting platform is moved, the locking pin 23 is inserted into the locking hole 22 on the upper side to fix the L-shaped connecting arm 20, so that the movable foot 19 is suspended diagonally upward.

[0037] Furthermore, the loading plate 3 is mounted on the upper end of the upper base 2 via load cells 24. Four load cells 24 are evenly distributed on the upper base 2. A control cabinet is located on the side wall of the lower base of the lifting platform, and a display corresponding to each load cell 24 is installed inside the control cabinet. The load cells are used to measure the weight of personnel and cargo on the loading plate 3, ensuring operational safety. Simultaneously, the load cells can accurately assess the weight of the cargo, facilitating the flight engineer or navigator to determine the aircraft's center of gravity after the cargo is loaded and unloaded, ensuring flight safety.

[0038] Furthermore, the upper end of the loading plate 3 is provided with a guardrail, which consists of a fixed railing 25, a ladder 26, and a gate 27. The ladder 26 is detachably connected to the fixed railing 25.

[0039] The fixed railing 25 is provided with hooks adapted to the ladder 26, the side wall of the ladder 26 is provided with a rod, the side wall of the loading plate 3 is provided with a tube 31 adapted to the rod, and the lower end of the ladder 26 is equipped with an anti-slip foot support 28 through a lifting rod.

[0040] The protective railing effectively improves operational safety during aircraft engine or propeller replacement. The railing is constructed using a ladder 26 and is designed for detachable installation. After removing the ladder 26, it is convenient for workers to access the loading plate 3, thus improving operational convenience.

[0041] Both the loading plate 3 and the lower base 1 are provided with fixing rings 29 on their side walls. The fixing rings 29 can be used in conjunction with external ropes to fix the lifting platform during transfer.

[0042] The upper end of the lower base 1 is provided with a plurality of support columns 30 adapted to the loading plate 3, and the upper end of the support column 30 is provided with a shock-absorbing pad. The support columns 30 are provided to support the loading plate when the loading plate 3 is lowered to the lowest position.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty lifting platform, characterized in that: The device includes a lower base, on which a scissor lift frame is mounted. An upper base is located at the upper end of the scissor lift frame, and a loading plate is mounted on the upper end of the upper base. A hydraulic press is mounted on the scissor lift frame. A first roller is located at the end of the fixed shaft at the lower end of the scissor lift frame. The lower base is provided with a first limiting guide rail adapted to the first roller. Multiple limiting pin cylinders are provided on the upper sidewall of the first limiting guide rail. Limiting pins adapted to the first roller are movably inserted into the limiting pin cylinders. Insertion holes adapted to the limiting pins are provided on the lower sidewall of the first limiting guide rail.

2. The heavy-duty lifting platform according to claim 1, characterized in that: The scissor lift frame includes a first lifting fork and a second lifting fork that cooperate with each other. The first lifting fork and the second lifting fork are connected by a connecting shaft. The upper end of the first lifting fork is hinged to the upper base, and the lower end of the first lifting fork is hinged to a first fixed shaft. The end of the first fixed shaft is provided with a first roller. The lower end of the second lifting fork is hinged to the lower base, and the upper end of the second lifting fork is hinged to a second fixed shaft. The end of the second fixed shaft is provided with a second roller. The upper base is provided with a second limiting guide rail adapted to the second roller. An installation shaft is provided on the second lifting fork above the connecting shaft. The hydraulic press is provided between the first fixed shaft and the installation shaft.

3. The heavy-duty lifting platform according to claim 1, characterized in that: The lower base is provided with traction mechanisms on both the front and rear sides. The traction mechanism includes a traction frame, the lower end of which is provided with a traction wheel, and the traction frame is detachably connected to a traction rod.

4. The heavy-duty lifting platform according to claim 1, characterized in that: The lower base has multiple movable feet on its left and right sides. The threaded adjustment rod of the movable feet has an L-shaped connecting arm. The outer side wall of the lower base has multiple mounting brackets that fit the L-shaped connecting arms. The vertical part of the L-shaped connecting arm is hinged to the mounting bracket. The mounting bracket has locking holes on the upper and lower sides of the hinge shaft. The L-shaped connecting arm has a locking pin that fits the locking hole.

5. The heavy-duty lifting platform according to claim 1, characterized in that: The loading plate is mounted on the upper end of the upper base via a weighing sensor.

6. The heavy-duty lifting platform according to claim 5, characterized in that: The upper end of the loading plate is equipped with a guardrail, which consists of a fixed railing, a ladder, and a gate. The ladder is detachably connected to the fixed railing.

7. The heavy-duty lifting platform according to claim 6, characterized in that: The fixed railing is equipped with hooks adapted to the ladder, the side wall of the ladder is equipped with insert rods, the side wall of the loading plate is equipped with insert tubes adapted to the insert rods, and the lower end of the ladder is equipped with anti-slip foot supports via lifting rods.

8. The heavy-duty lifting platform according to claim 1, characterized in that: Both the loading plate and the side wall of the lower base are provided with fixing rings.

9. The heavy-duty lifting platform according to claim 1, characterized in that: The upper end of the lower base is provided with multiple support columns adapted to the loading plate, and the upper end of the support columns is provided with shock-absorbing pads.

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