Lifting device with multi-angle adjusting and flexible unloading functions

Abstract

The invention discloses a lifting device with multi-angle adjusting and flexible unloading functions. The lifting device comprises a lifting platform, an operating rod assembly, a hydraulic assembly, a multi-angle adjusting assembly and a flexible unloading assembly. The operating rod assembly comprises an operating rod, a transmission rod is arranged in the operating rod, an operating handle and an unloading handle are arranged at the top of the operating rod, the top of the transmission rod is connected with the operating handle, and the bottom of the transmission rod is matched with the multi-angle adjusting assembly; the multi-angle adjusting assembly comprises an angle adjusting piece and a gear adjusting piece, the bottom of the angle adjusting piece is movably connected with a shaft sleeve arranged in the lifting platform, the top of the angle adjusting piece is matched with the transmission rod, and the gear adjusting piece is fixedly connected with a mounting plate at the end of the lifting platform; the flexible unloading assembly comprises an unloading connecting rod which is movably installed with the rotating shaft as a fulcrum, the bottom of the unloading connecting rod makes contact with an unloading ejector rod of the hydraulic assembly, the top of the unloading connecting rod is connected with one end of a steel wire rope, and the other end of the steel wire rope penetrates out of the lifting platform and is in transmission connection with an unloading handle.

Description

Technical Field

[0001] The invention relates to the field of hydraulic devices, and in particular to a lifting device with multi-angle adjustment and flexible unloading functions. Background Art

[0002] The hydraulic lifting device is started by the motor and drives the oil pump to work, sucking the pressurized oil from the oil tank into the oil cylinder. As the oil pressure increases, the piston rod in the oil cylinder begins to move and pushes the lifting mechanism connected to it to rise, thereby lifting the object. When the required height is reached, the hydraulic system can be kept at a certain pressure state through the control element to keep the object in a stable lifting state.

[0003] For example, the patent document with patent number 202321011649.4 discloses an easily adjustable car lift, including a base frame, an oil pump, a connecting frame, a handle, a tray, a first rotating shaft, a lifting arm, a connecting piece and a safety tooth. The bottom of the oil pump is installed on the base frame, the output shaft of the oil pump is hinged to the connecting frame, the two ends of the connecting frame are connected to the connecting piece through the first rotating shaft, the bottom end of the connecting piece abuts against the safety tooth provided on the base frame, the connecting frame can rotate around the first rotating shaft, a connecting block is sleeved on the first rotating shaft, the connecting block can rotate with the first rotating shaft, the connecting block is connected to the lifting arm, the bottom end of the handle is fixed on the connecting frame, a lifting pedal and a pressure relief pedal are provided on the oil pump, the oil pump is controlled by the lifting pedal and the pressure relief pedal, one end of the lifting arm is arranged on the base frame, the other end of the lifting arm is connected to the tray, and the tray extends along the length direction of the base frame.

[0004] The defects of the above patent solution are:

[0005] 1) The bottom end of the handle of the lifting device is fixedly connected to the connecting frame, that is, the angle between the handle and the connecting frame is fixed, which makes it impossible to use it in a narrow place.

[0006] 2) Since the operating handle of the lifting device is far away from the hydraulic system, if the device for unloading operation is set at the operating handle, the transmission structure of the operating handle and the pneumatic system will have high precision requirements. Therefore, the current common practice is to set the unloading device near the hydraulic system.

[0007] For example, a foot pedal is provided for load relief control. When the oil pump needs to be relieved of pressure, the pressure relief pedal can be stepped on, which solves the problem that the existing lift requires workers to bend down and control the oil pump through the handle, which is inconvenient to operate. However, the above technical solution simultaneously provides two sets of control devices, the foot pedal and the operating handle, resulting in a larger volume occupied by the entire device.

[0008] Therefore, it is necessary for us to improve such a structure to overcome the above-mentioned defects. Summary of the invention

[0009] The purpose of the present invention is to provide a lifting device with multi-angle adjustment and flexible unloading functions to solve the problems existing in the prior art.

[0010] The above technical objectives of the present invention are achieved through the following technical solutions:

[0011] A lifting device with multi-angle adjustment and flexible unloading functions, comprising a lifting platform, and an operating rod assembly and a hydraulic assembly arranged on the lifting platform, wherein the operating rod assembly is connected to the lifting platform via the multi-angle adjustment assembly, and the operating rod assembly is connected to the hydraulic assembly via the flexible unloading assembly;

[0012] The operating rod assembly includes an operating rod, a transmission rod is arranged inside the operating rod, an operating handle and a unloading handle are arranged on the top of the operating rod, the top of the transmission rod is connected to the operating handle, the end of the operating handle extends out of the operating rod, and the bottom of the transmission rod cooperates with the multi-angle adjustment assembly;

[0013] The multi-angle adjustment assembly includes an angle adjustment member and a gear adjustment member, the bottom of the angle adjustment member is movably connected to a shaft sleeve arranged in the lifting platform, the top of the angle adjustment member cooperates with the transmission rod, and the gear adjustment member is fixedly connected to a mounting plate at the end of the lifting platform;

[0014] The flexible unloading assembly includes an unloading connecting rod arranged on the side of the hydraulic assembly. The unloading connecting rod is movably installed with the rotating shaft as a fulcrum. The bottom of the unloading connecting rod is in contact with the unloading top rod of the hydraulic assembly. The top of the unloading connecting rod is connected to one end of the wire rope. A return spring is sleeved at the connection between the unloading connecting rod and the wire rope. The return spring is positioned by a support plate. The other end of the wire rope passes through the lifting platform and is transmission-connected to the unloading handle.

[0015] The interior of the lifting assembly is a cavity structure, the hydraulic assembly is installed in the cavity structure, the shaft sleeve is arranged on the inner wall of the cavity structure, and the mounting plate is arranged at the end of the cavity structure.

[0016] The operating rod is provided with an axially penetrating accommodation cavity inside, and an operating port communicating with the accommodation cavity is provided on the outer surface of the operating rod, and the end of the operating handle extends out of the operating rod through the operating port; the operating port includes a limiting groove and an angle adjustment groove arranged above the limiting groove;

[0017] A gear limiting piece is provided at the bottom of the operating rod, the operating rod is extended from the bottom of the gear limiting piece, a return spring is provided at the top of the gear limiting piece, one end of the return spring is connected to the gear limiting piece, and the other end of the return spring is fixed by a limit block.

[0018] The angle adjustment member includes a fixed portion and a rotating portion;

[0019] The fixed part is provided with a connecting hole through which the fixed part is movably connected with the lifting assembly through the connecting hole and the shaft sleeve. An opening for accommodating the gear adjustment member is provided at the bottom of the rotating part, and an axial hole is provided at the top of the rotating part.

[0020] The bottom end of the transmission rod passes through the shaft hole and is limitedly matched with the gear adjustment member located in the opening.

[0021] The gear adjustment member includes a connecting plate and a gear plate;

[0022] The connecting plate is provided with a threaded hole, and is connected and fixed to a mounting plate arranged at the end of the cavity structure through the threaded hole; the shift plate is arranged in the opening of the angle adjustment member, and a plurality of shift holes are provided on the shift plate, and the shift holes are used to cooperate with the bottom end limit of the transmission rod.

[0023] The end of the unloading handle is movably connected to the operating rod through a pin shaft and can be rotated by using the pin shaft as a fulcrum. A traction head for connecting a steel wire rope is provided on the unloading handle. The main body of the steel wire rope is arranged in a spring sheath, and the two ends of the spring sheath extend to the support plate and the unloading handle respectively, and are fixed by a sheath joint respectively.

[0024] Furthermore, a traction hole is provided on one side of the unloading connecting rod, and the unloading connecting rod is connected to the wire rope through the traction hole. A rotating hole is provided on one side of the unloading connecting rod, and the unloading connecting rod is movably installed inside the lifting platform through a rotating shaft passing through the rotating hole.

[0025] In summary, the present invention has the following beneficial effects:

[0026] By arranging an adjustment and positioning assembly at the connection between the operating rod assembly and the lifting assembly, multi-level adjustment and positioning of the connection angle between the operating rod assembly and the lifting assembly can be achieved.

[0027] By respectively arranging a unloading handle and an unloading connecting rod connected by a flexible steel wire rope at the top of the operating rod and inside the lifting platform, long-distance flexible transmission is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the lifting device with multi-angle adjustment and flexible unloading functions according to the present invention.

[0029] Figure 2 It is a schematic diagram of the connection relationship of the multi-angle adjustment assembly of the present invention.

[0030] Figure 3 It is a schematic diagram of the connection relationship of the flexible unloading function of the present invention.

[0031] Figure 4 Schematic diagram of the operating lever assembly of the present invention.

[0032] Figure 5 It is a schematic diagram of the interior of the operating rod assembly of the present invention.

[0033] Figure 6 Schematic diagram of the angle adjustment member of the present invention.

[0034] Figure 7 Schematic diagram of the gear adjustment member of the present invention.

[0035] Figure 8 It is a schematic diagram of the flexible unloading component of the present invention.

[0036] Fig. 9 It is a connection schematic diagram of the unloading handle of the present invention.

[0037] Fig.10 It is a schematic diagram of the unloading connecting rod described in the present invention. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with illustrations and specific embodiments.

[0039] like Figures 1 to 10 As shown, the present invention provides a lifting device with multi-angle adjustment and flexible unloading functions, comprising a lifting platform 1, and an operating rod assembly 2 and a hydraulic assembly 3 arranged on the lifting platform 1, wherein the operating rod assembly 2 is connected to the lifting platform 1 through a multi-angle adjustment assembly 4, and the operating rod assembly 2 is connected to the hydraulic assembly 3 through a flexible unloading assembly 5;

[0040] The operating rod assembly 2 includes an operating rod 21, a transmission rod 22 is provided inside the operating rod 21, an operating handle 23 and a unloading handle 24 are provided on the top of the operating rod 21, the top of the transmission rod 22 is connected to the operating handle 23, the end of the operating handle 23 extends out of the operating rod 21, and the bottom of the transmission rod 22 cooperates with the multi-angle adjustment assembly 4;

[0041] The multi-angle adjustment assembly 4 includes an angle adjustment member 41 and a gear adjustment member 42. The bottom of the angle adjustment member 41 is movably connected to the shaft sleeve 11 disposed in the lifting platform 1. The top of the angle adjustment member 41 cooperates with the transmission rod 22. The gear adjustment member 42 is fixedly connected to the mounting plate 12 at the end of the lifting platform 1.

[0042] The flexible unloading component 5 includes an unloading link 51 arranged on the side of the hydraulic component 3. The unloading link 51 is movably installed with the rotating shaft 52 as a fulcrum. The bottom of the unloading link 51 is in contact with the unloading top rod 31 of the hydraulic component 3. The top of the unloading link 51 is connected to one end of the wire rope 53. A return spring 54 is sleeved at the connection between the unloading link 51 and the wire rope 53. The return spring 54 is positioned by a support plate 55. The other end of the wire rope 53 passes through the lifting platform 1 and is transmission-connected to the unloading handle 24.

[0043] The interior of the lifting assembly 1 is a cavity structure, the hydraulic assembly 3 is installed in the cavity structure, the sleeve 11 is arranged on the inner wall of the cavity structure, and the mounting plate 12 is arranged at the end of the cavity structure.

[0044] The operating rod 21 has an axially penetrating accommodation cavity 25 in its interior, and an operating port 26 communicating with the accommodation cavity 25 is provided on the outer surface of the operating rod 21. The end of the operating handle 23 extends out of the operating rod 21 through the operating port 26. The operating port 26 includes a limiting groove 261 and an angle adjustment groove 262 provided above the limiting groove 261.

[0045] A gear limiting piece 27 is provided at the bottom of the operating rod 21 , and the bottom of the gear limiting piece 27 extends out of the operating rod 21 . A return spring 28 is provided at the top of the gear limiting piece 27 , one end of the return spring 28 is connected to the gear limiting piece 27 , and the other end of the return spring 28 is fixed by a limit block 29 .

[0046] The angle adjustment member 41 includes a fixing portion 411 and a rotating portion 412;

[0047] The fixing part 411 is provided with a connecting hole 413 which penetrates through the fixing part 411 and is movably connected with the lifting assembly 1 through the connecting hole 413 and the shaft sleeve 11. An opening 414 for accommodating the gear adjustment member 42 is provided at the bottom of the rotating part 412, and an axial hole 415 is provided at the top of the rotating part 412.

[0048] The bottom end of the transmission rod 22 passes through the shaft hole 415 and is limitedly matched with the gear adjustment member 42 located in the opening 414 .

[0049] The gear adjustment member 42 includes a connecting plate 421 and a gear plate 422;

[0050] The connecting plate 421 is provided with a threaded hole, and is connected and fixed to the mounting plate 12 arranged at the end of the cavity structure through the threaded hole; the shift plate 422 is arranged in the opening 414 of the angle adjustment member 41, and a plurality of shift holes 423 are provided on the shift plate 422, and the shift holes 423 are used to cooperate with the bottom end limit of the transmission rod 22.

[0051] The end of the unloading handle 24 is movably connected to the operating rod 21 through a pin shaft 241, and can be rotated with the pin shaft 241 as a fulcrum. A traction head 242 for connecting the wire rope 53 is provided on the unloading handle 24; the main body of the wire rope 53 is arranged in a spring sheath 56, and the two ends of the spring sheath 56 extend to the support plate 55 and the unloading handle 24 respectively, and are fixed by a sheath joint 57 respectively.

[0052] The unloading link 51 has a traction hole 511 on one side and is connected to the wire rope 53 through the traction hole 511 . The unloading link 51 has a rotation hole 512 on one side and is movably installed inside the lifting platform 1 through the rotation shaft 52 passing through the rotation hole 512 .

[0053] The working principle of the multi-angle adjustment function of the present invention is as follows:

[0054] When the present invention needs to adjust the angle of the lifting assembly 1 and the operating rod assembly 2, the operating rod 21 is pulled upward by the operating handle 23, so that the gear limiting member 27 set at the bottom of the operating rod 21 leaves the gear hole 423 of the gear adjusting member 42, and then the operating rod 21 is inserted into the angle adjustment groove 262. In this state, the operating rod assembly 2 can rotate freely with the connection with the lifting assembly 1 as the fulcrum.

[0055] When the gear limiting member 27 set at the bottom of the operating rod 21 rotates to the gear hole 423 corresponding to the target angle, the operating rod 21 is re-inserted into the limiting groove 261, and the gear limiting member 27 is inserted into the gear hole 223 corresponding to the target angle under the action of the reset spring 28 and locked.

[0056] The working principle of the flexible unloading function of the present invention is as follows:

[0057] When the hydraulic component 3 needs to be unloaded, the unloading handle 24 is pulled upward, and the tension of the unloading handle 24 acts on the unloading link 51 through the wire rope 53. Under the action of the tension, the unloading link 51 rotates with the rotating shaft 52 as a fulcrum. Since the bottom of the unloading link 51 is in contact with the unloading push rod 31 of the hydraulic component 3, the unloading link 51 will push the unloading push rod 31, thereby opening the unloading oil circuit inside the hydraulic component 3, and realizing the unloading operation of the hydraulic component 3 by operating the unloading handle 24.

[0058] After unloading is completed, the unloading handle 24 is released, and the unloading connecting rod 51 returns to the initial position under the action of the return spring 54 .

[0059] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore should not be understood as limitations of the present invention.

[0060] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting device with multi-angle adjustment and flexible unloading functions, comprising a lifting platform (1), and an operating rod assembly (2) and a hydraulic assembly (3) arranged on the lifting platform (1), characterized in that: The operating rod assembly (2) is connected to the lifting platform (1) via a multi-angle adjustment assembly (4), and the operating rod assembly (2) is connected to the hydraulic assembly (3) via a flexible unloading assembly (5); The operating rod assembly (2) comprises an operating rod (21), a transmission rod (22) is arranged inside the operating rod (21), an operating handle (23) and a load-releasing handle (24) are arranged on the top of the operating rod (21), the top of the transmission rod (22) is connected to the operating handle (23), the end of the operating handle (23) extends out of the operating rod (21), and the bottom of the transmission rod (22) cooperates with the multi-angle adjustment assembly (4); The multi-angle adjustment assembly (4) comprises an angle adjustment member (41) and a gear adjustment member (42), the bottom of the angle adjustment member (41) is movably connected to a shaft sleeve (11) arranged in the lifting platform (1), the top of the angle adjustment member (41) cooperates with the transmission rod (22), and the gear adjustment member (42) is fixedly connected to a mounting plate (12) at the end of the lifting platform (1); The flexible unloading component (5) comprises an unloading connecting rod (51) arranged on the side of the hydraulic component (3), the unloading connecting rod (51) is movably installed with the rotating shaft (52) as a fulcrum, the bottom of the unloading connecting rod (51) contacts the unloading top rod (31) of the hydraulic component (3), the top of the unloading connecting rod (51) is connected to one end of a steel wire rope (53), a return spring (54) is sleeved at the connection between the unloading connecting rod (51) and the steel wire rope (53), the return spring (54) is positioned by a support plate (55), and the other end of the steel wire rope (53) passes through the lifting platform (1) and is transmission-connected to the unloading handle (24).

2. The lifting device with multi-angle adjustment and flexible unloading function according to claim 1 is characterized in that: The interior of the lifting assembly (1) is a cavity structure, the hydraulic assembly (3) is installed in the cavity structure, the shaft sleeve (11) is arranged on the inner wall of the cavity structure, and the mounting plate (12) is arranged at the end of the cavity structure.

3. The lifting device with multi-angle adjustment and flexible unloading function according to claim 1, characterized in that: The operating rod (21) is provided with an axially penetrating accommodation cavity (25) inside, and an operating port (26) communicating with the accommodation cavity (25) is provided on the outer surface of the operating rod (21), and the end of the operating handle (23) extends out of the operating rod (21) through the operating port (26); the operating port (26) comprises a limiting groove (261) and an angle adjustment groove (262) arranged above the limiting groove (261); A gear position limiting member (27) is provided at the bottom of the operating rod (21), the bottom of the gear position limiting member (27) extends out of the operating rod (21), a return spring (28) is provided at the top of the gear position limiting member (27), one end of the return spring (28) is connected to the gear position limiting member (27), and the other end of the return spring (28) is fixed by a limit block (29).

4. The lifting device with multi-angle adjustment and flexible unloading function according to claim 1, characterized in that: The angle adjustment member (41) comprises a fixing portion (411) and a rotating portion (412); The fixed part (411) is provided with a connecting hole (413) penetrating therethrough, and is movably connected to the lifting assembly (1) by cooperating with the shaft sleeve (11) through the connecting hole (413); an opening (414) for accommodating the gear adjustment member (42) is provided at the bottom of the rotating part (412), and an axial hole (415) is provided at the top of the rotating part (412); The bottom end of the transmission rod (22) passes through the shaft hole (415) and is limitedly matched with the gear adjustment member (42) located in the opening (414).

5. The lifting device with multi-angle adjustment and flexible unloading function according to claim 4 is characterized in that: The gear adjustment member (42) comprises a connecting plate (421) and a gear plate (422); The connecting plate (421) is provided with a threaded hole, and is connected and fixed to a mounting plate (12) arranged at the end of the cavity structure through the threaded hole; the shift plate (422) is arranged in the opening (414) of the angle adjustment member (41), and a plurality of shift holes (423) are provided on the shift plate (422), and the shift holes (423) are used to cooperate with the bottom end of the transmission rod (22) in a limiting manner.

6. The lifting device with multi-angle adjustment and flexible unloading function according to claim 1, characterized in that: The end of the unloading handle (24) is movably connected to the operating rod (21) through a pin shaft (241) and can rotate with the pin shaft (241) as a fulcrum. A traction head (242) for connecting a steel wire rope (53) is provided on the unloading handle (24); the main body of the steel wire rope (53) is arranged in a spring sheath (56), and the two ends of the spring sheath (56) extend to the support plate (55) and the unloading handle (24) respectively, and are fixed by a sheath joint (57) respectively.

7. The flexible unloading mechanism in the pneumatic lifting device according to claim 1, characterized in that: The unloading connecting rod (51) is provided with a traction hole (511) on one side and is connected to the steel wire rope (53) through the traction hole (511). The unloading connecting rod (51) is provided with a rotation hole (512) on one side and is movably installed inside the lifting platform (1) through a rotation shaft (52) passing through the rotation hole (512).

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