Hydraulic lifting system and lifting method thereof

Abstract

The present invention discloses a hydraulic lifting system, including a support base, the top of the support base is fixedly connected to two support frames, the two support frames are arranged parallel to each other, and a support slide is provided between the two support frames, the tops of the two support frames are respectively fixedly connected to two first cross bars and two second cross bars, and the top of the support base is fixedly connected to an auxiliary fixing frame, and relates to the technical field of lifting equipment. The hydraulic lifting system and its lifting method are convenient for the lifting platform to bear weight and lift by adopting the structure of steel wire rope and pulley block, and are convenient for observing the wear condition, and at the same time, four load-bearing ropes are stressed at the same time, if one of the steel wire ropes is broken, there are still other steel ropes that can still bear force, which increases safety, is easy to maintain, has a slow descent speed, low power consumption, low noise, stable lifting, and no shaking.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a hydraulic lifting system. Background Art

[0002] Lifting equipment plays an important role in the process of industrial production and processing. It can transport larger and heavier objects to high places for installation and use. It is also convenient for transporting or removing objects from high places to facilitate the transportation and use of workpieces. During the transportation process, the load-bearing force and stability of the lifting equipment are extremely important.

[0003] Traditional lifting equipment is chain lifting, and it is a single chain or double chain, which is easy to fall instantly. To ensure safety, it is generally hidden in a closed environment of steel structure, which makes chain wear difficult to detect, which will pose a safety hazard, and it consumes a lot of electricity and makes a lot of noise. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hydraulic lifting system, which solves the problem of low safety of lifting equipment with a chain structure.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic lifting system includes a support base, the top of the support base is fixedly connected to two support frames, the two support frames are distributed parallel to each other, and a support slide groove is opened between the two support frames, the tops of the two support frames are respectively fixedly connected to two first cross bars and two second cross bars, the top of the support base is fixedly connected to an auxiliary fixing frame, the top of the auxiliary fixing frame is fixedly connected to a third cross bar, the top of the support base is provided with a high-pressure pump station, the output end of the high-pressure pump station is provided with a high-pressure oil pipe, the high-pressure oil pipe is provided with a one-way valve, and a high A hydraulic cylinder is provided at the output end of the pressure oil guide pipe, and a linkage frame is fixedly connected to the top end of the hydraulic cylinder. A high-pressure oil return pipe is provided at the output end of the hydraulic cylinder, and an electromagnetic distributor is provided on the high-pressure oil return pipe. A first steel wire is fixedly connected to one side of the linkage frame, and the first steel wire is fixedly connected to the first cross bar through a first pulley group. A lifting platform is provided between the two support frames, and transverse rollers are provided on both sides of the lifting platform. The surface of the transverse roller is slidably connected to the inner surface of the supporting slide groove, and a second steel wire is fixedly connected to the other side of the linkage frame, and the second steel wire is fixedly connected to the second cross bar through a second pulley group.

[0006] Furthermore, the first pulley group includes a first active pulley, a second active pulley, a third active pulley and a first lifting pulley, and the first active pulley is arranged on one side of the support frame.

[0007] Furthermore, the second active pulley and the third active pulley are respectively arranged on the two first cross bars, and the first lifting pulley is arranged on the lifting platform.

[0008] Furthermore, the surface of the first steel wire is transmission-connected to the surface of the first active pulley, and the surfaces of the first steel wire are transmission-connected to the surfaces of the second active pulley and the third active pulley respectively, and one end of the first steel wire is fixed to the bottom of the first cross bar after being wrapped around the surface of the first lifting pulley.

[0009] Furthermore, the second pulley group includes a first linkage pulley, a second linkage pulley, a third linkage pulley, a fourth linkage pulley, a fifth linkage pulley, a sixth linkage pulley and a second lifting pulley, the first linkage pulley is arranged on one side of the auxiliary fixing frame, and the first linkage pulley and the first active pulley are on the same horizontal plane.

[0010] Furthermore, the second linkage pulley is arranged on the third cross bar, the third linkage pulley and the fourth linkage pulley are both arranged at the bottom of the support base, and the fourth linkage pulley and the third linkage pulley are on the same horizontal plane.

[0011] Furthermore, the fifth linkage pulley and the sixth linkage pulley are respectively arranged on the two second cross bars, and the bottom of the second lifting pulley is arranged on one side of the top of the lifting platform.

[0012] Furthermore, the surface of the second steel wire is respectively connected to the surfaces of the first linkage pulley, the second linkage pulley, the third linkage pulley, the fourth linkage pulley, the fifth linkage pulley and the sixth linkage pulley, and one end of the second steel wire is fixed to the bottom of the second cross bar after being wrapped around the second lifting pulley.

[0013] Furthermore, a threading hole is provided on the support base, and the surface of the second steel wire vertically passes through the threading hole. The bottom of the hydraulic cylinder is fixedly connected to the top of the support base, and the output end of the high-pressure oil return pipe is connected to the input end of the high-pressure pump station.

[0014] A lifting method of a hydraulic lifting system comprises the following steps:

[0015] S1 starts the high-pressure pump station, and the oil in the high-pressure pump station is transported to the hydraulic cylinder through the high-pressure oil pipe, thereby pushing the output end of the hydraulic cylinder up. The output end of the hydraulic cylinder pulls the first steel wire and the second steel wire synchronously through the linkage frame;

[0016] When the first steel wire S2 is pulled upward, it drives one side of the top of the lifting platform to move upward through the first pulley group. When the second steel wire is pulled upward, it drives the other side of the top of the lifting platform through the second pulley group, so as to facilitate the synchronous upward pulling of both sides of the top of the lifting platform to facilitate the upward adjustment of the lifting platform. When the lifting platform reaches the specified height, the high-pressure pump station can be closed;

[0017] S3 When the lifting platform needs to be lowered, the electromagnetic distributor is started, and the electromagnetic distributor opens the high-pressure oil return pipe, so that the oil in the hydraulic cylinder flows back to the high-pressure pump station through the high-pressure oil return pipe. As the amount of oil in the hydraulic cylinder decreases, the output end of the hydraulic cylinder gradually decreases, achieving the operation of lowering the lifting height, thereby facilitating the lowering of the height of the lifting platform.

[0018] The present invention has the following beneficial effects:

[0019] The hydraulic lifting system adopts the structure of wire rope and pulley group, which is convenient for the load-bearing and lifting of the lifting platform, and convenient for observing the wear condition. At the same time, the four load-bearing ropes are stressed at the same time. If one of the wire ropes breaks, the other wire ropes can still bear the stress, which increases the safety, easy maintenance, slow descent speed, low power consumption, low noise, smooth lifting and lowering, and no shaking.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a first embodiment of a hydraulic lifting system provided by the present invention;

[0022] Figure 2 For the present invention Figure 1 An enlarged view of point A is shown;

[0023] Figure 3 This is a schematic structural diagram of a second embodiment of the hydraulic lifting system provided by the present invention.

[0024] In the figure, 1-support base, 11-threading hole, 2-support frame, 21-support slide, 22-first cross bar, 23-second cross bar, 3-auxiliary fixing frame, 31-third cross bar, 4-high-pressure pump station, 41-high-pressure oil guide pipe, 411-check valve, 42-hydraulic cylinder, 421-linkage frame, 43-high-pressure oil return pipe, 44-electromagnetic distributor, 5-first steel wire, 51-first active pulley, 52-second active pulley, 53-third active pulley, 54-first lifting pulley, 6-lifting platform, 61-lateral roller, 7-second steel wire, 71-first linkage pulley, 72-second linkage pulley, 73-third linkage pulley, 74-fourth linkage pulley, 75-fifth linkage pulley, 76-sixth linkage pulley, 77-second lifting pulley. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] First embodiment:

[0028] See also Figure 1-2 The embodiment of the present invention provides a technical solution: a hydraulic lifting system includes a support base 1, the top of the support base 1 is fixedly connected to two support frames 2, the two support frames 2 are arranged parallel to each other, and a support slide 21 is provided between the two support frames 2, the tops of the two support frames 2 are respectively fixedly connected to two first cross bars 22 and two second cross bars 23, the top of the support base 1 is fixedly connected to an auxiliary fixing frame 3, the top of the auxiliary fixing frame 3 is fixedly connected to a third cross bar 31, a high-pressure pump station 4 is arranged on the top of the support base 1, a high-pressure oil pipe 41 is arranged on the output end of the high-pressure pump station 4, a one-way valve 411 is arranged on the high-pressure oil pipe 41, and the output end of the high-pressure oil pipe 41 A hydraulic cylinder 42 is provided, and a linkage frame 421 is fixedly connected to the top end of the hydraulic cylinder 42. A high-pressure oil return pipe 43 is provided at the output end of the hydraulic cylinder 42, and an electromagnetic distributor 44 is provided on the high-pressure oil return pipe 43. A first steel wire 5 is fixedly connected to one side of the linkage frame 421, and the first steel wire 5 is fixedly connected to the first cross bar 22 through a first pulley block. A lifting platform 6 is provided between the two support frames 2, and transverse rollers 61 are provided on both sides of the lifting platform 6. The surface of the transverse roller 61 is slidably connected to the inner surface of the support slide 21. A second steel wire 7 is fixedly connected to the other side of the linkage frame 421, and the second steel wire 7 is fixedly connected to the second cross bar 23 through a second pulley block.

[0029] The first pulley group includes a first active pulley 51 , a second active pulley 52 , a third active pulley 53 and a first lifting pulley 54 . The first active pulley 51 is disposed at one side of the support frame 2 .

[0030] The second active pulley 52 and the third active pulley 53 are respectively disposed on the two first cross bars 22 , and the first lifting pulley 54 is disposed on the lifting platform 6 .

[0031] The surface of the first steel wire 5 is transmission-connected to the surface of the first active pulley 51, and the surfaces of the first steel wire 5 are transmission-connected to the surfaces of the second active pulley 52 and the third active pulley 53, respectively. One end of the first steel wire 5 is wound around the surface of the first lifting pulley 54 and then fixed to the bottom of the first cross bar 22.

[0032] The second pulley group includes a first linkage pulley 71, a second linkage pulley 72, a third linkage pulley 73, a fourth linkage pulley 74, a fifth linkage pulley 75, a sixth linkage pulley 76 and a second lifting pulley 77. The first linkage pulley 71 is arranged on one side of the auxiliary fixing frame 3, and the first linkage pulley 71 and the first active pulley 51 are on the same horizontal plane.

[0033] The second linkage pulley 72 is disposed on the third cross bar 31 , the third linkage pulley 73 and the fourth linkage pulley 74 are both disposed at the bottom of the support base 1 , and the fourth linkage pulley 74 and the third linkage pulley 73 are on the same horizontal plane.

[0034] The fifth linkage pulley 75 and the sixth linkage pulley 76 are respectively arranged on the two second cross bars 23 , and the bottom of the second lifting pulley 77 is arranged on one side of the top of the lifting platform 6 .

[0035] The surfaces of the second steel wire 7 are respectively connected to the surfaces of the first linkage pulley 71, the second linkage pulley 72, the third linkage pulley 73, the fourth linkage pulley 74, the fifth linkage pulley 75 and the sixth linkage pulley 76, and one end of the second steel wire 7 is fixed to the bottom of the second cross bar 23 after being wrapped around the second lifting pulley 77.

[0036] The support base 1 is provided with a threading hole 11, and the surface of the second steel wire 7 vertically passes through the threading hole 11. The bottom of the hydraulic cylinder 42 is fixedly connected to the top of the support base 1, and the output end of the high-pressure oil return pipe 43 is connected to the input end of the high-pressure pump station 4.

[0037] The hydraulic cylinder 42 is a hollow three-stage design, from large to small, and the lifting height is determined according to the amount of oil in the hydraulic cylinder. The hollow part is an oil filling device.

[0038] The transverse roller 61 is a track wheel.

[0039] Slow descent to improve safety: Since there is oil in the hydraulic cylinder 42, the oil is discharged through the electromagnetic distributor 44. During this process, the lifting platform 6 is lowered according to the amount of oil in the hydraulic cylinder 42. The oil is not discharged all at once to cause the lifting platform 6 to fall instantly, which greatly improves the overall safety of the device;

[0040] Stable lifting, double rope force: the lifting height is determined by the amount of oil in the hydraulic cylinder 42. While the oil pushes the hydraulic cylinder 42 up, two steel wire ropes are matched with two sets of pulleys to pull the structure steadily up, forming four load-bearing ropes that are stressed at the same time. If one of the steel wire ropes breaks, the other steel ropes can still bear the force, which increases safety. At the same time, there are horizontal rollers 61 on the left and right that are stuck on the support frame 2, so that the lifting platform 6 will not deviate or shake to the left and right, solving the problem of unstable center of gravity when placing things on the lifting platform;

[0041] Low power consumption: During the ascent, the oil in the high-pressure pump station 4 is discharged into the hydraulic cylinder 42 through the high-pressure oil pipe 41, and the oil in the hydraulic cylinder 42 is discharged by the electromagnetic distributor 44 when descending, so that the descent is slow and the power consumption is reduced;

[0042] Low noise: The device is determined by the amount of oil in the hydraulic cylinder 42 and the weight of the goods on the lifting platform 6. The first steel wire 5 and the second steel wire 7 are both steel wire ropes, and the noise generated is relatively small.

[0043] High stability: the lifting platform 6 is pushed up by the hydraulic cylinder 42 and pulled by the wire rope and the pulley block, and the lifting platform 6 has two horizontal rollers 61 on the left and right sides respectively stuck on the support frame 2. No matter how uneven the force or unstable the center of gravity of the goods in the lifting platform is, the wheels can be stuck on the stable column and rise or fall smoothly;

[0044] Easy to maintain: from inside the lifting platform 6, the wire rope, pulley, track wheel and oil pipe can be clearly seen, so it is convenient to observe the wear of all accessories. At the same time, a detachable structure can be used for installation and use to facilitate the maintenance of the equipment.

[0045] A lifting method of a hydraulic lifting system comprises the following steps:

[0046] S1 starts the high-pressure pump station 4, and the oil in the high-pressure pump station 4 is transported to the hydraulic cylinder 42 through the high-pressure oil pipe 41, thereby pushing the output end of the hydraulic cylinder 42 to rise, and the output end of the hydraulic cylinder 42 synchronously pulls the first steel wire 5 and the second steel wire 7 through the linkage frame 421;

[0047] When the first steel wire 5 is pulled upward, it drives one side of the top of the lifting platform 6 to move upward through the first pulley group. When the second steel wire 7 is pulled upward, it drives the other side of the top of the lifting platform 6 through the second pulley group, so as to facilitate the synchronous upward pulling of both sides of the top of the lifting platform 6 to facilitate the upward adjustment of the lifting platform 6. When the lifting platform 6 reaches the specified height, the high-pressure pump station 4 can be closed;

[0048] S3 When it is necessary to lower the lifting platform 6, start the electromagnetic distributor 44, and the electromagnetic distributor 44 opens the high-pressure oil return pipe 43, so that the oil in the hydraulic cylinder 42 flows back to the high-pressure pump station 4 through the high-pressure oil return pipe 43. As the amount of oil in the hydraulic cylinder 42 decreases, the output end of the hydraulic cylinder 42 gradually decreases, achieving the operation of lowering the lifting height, thereby facilitating the lowering of the height of the lifting platform 6.

[0049] When working:

[0050] The high-pressure pump station 4 is started first, and the oil in the high-pressure pump station 4 is transported to the hydraulic cylinder 42 through the high-pressure oil pipe 41, thereby pushing the output end of the hydraulic cylinder 42 to rise, and the output end of the hydraulic cylinder 42 synchronously pulls the first steel wire 5 and the second steel wire 7 through the linkage frame 421;

[0051] When the first steel wire 5 is pulled upward, one side of the top of the lifting platform 6 is driven to move upward through the first pulley group. When the second steel wire 7 is pulled upward, the other side of the top of the lifting platform 6 is driven through the second pulley group, so as to facilitate the synchronous upward pulling of both sides of the top of the lifting platform 6 to facilitate the upward adjustment of the lifting platform 6. When the lifting platform 6 reaches the specified height, the high-pressure pump station 4 can be closed.

[0052] When it is necessary to lower the lifting platform 6, the electromagnetic distributor 44 is started, and the electromagnetic distributor 44 opens the high-pressure oil return pipe 43, so that the oil in the hydraulic cylinder 42 flows back to the high-pressure pump station 4 through the high-pressure oil return pipe 43. As the amount of oil in the hydraulic cylinder 42 decreases, the output end of the hydraulic cylinder 42 gradually decreases, achieving the operation of lowering the lifting height, thereby facilitating the lowering of the height of the lifting platform 6.

[0053] Second embodiment:

[0054] See also Figure 3 The surface of the second steel wire 7 is directly connected to the surface of the third linkage pulley 73 through the threading hole 11, without the need for a separate auxiliary fixing frame 3, a third cross bar 31, and corresponding first linkage pulleys 71 and second linkage pulleys 72;

[0055] This reduces the total number of parts and the cost of equipment, reduces the cost of equipment operation and maintenance, reduces the difficulty of assembly and installation between pulley blocks, and makes installation between equipment more convenient.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic lifting system, comprising a support base (1), characterized in that: The top of the support base (1) is fixedly connected to two support frames (2), the two support frames (2) are arranged parallel to each other, and a support slide groove (21) is provided between the two support frames (2), the tops of the two support frames (2) are respectively fixedly connected to two first cross bars (22) and two second cross bars (23), the top of the support base (1) is fixedly connected to an auxiliary fixing frame (3), the top of the auxiliary fixing frame (3) is fixedly connected to a third cross bar (31), a high-pressure pump station (4) is arranged on the top of the support base (1), a high-pressure oil guide pipe (41) is arranged at the output end of the high-pressure pump station (4), a one-way valve (411) is arranged on the high-pressure oil guide pipe (41), and a hydraulic cylinder (42) is arranged at the output end of the high-pressure oil guide pipe (41), and the hydraulic cylinder (42) is arranged at the output end of the high-pressure oil guide pipe (41), 2) is fixedly connected to a linkage frame (421) at the top end, a high-pressure oil return pipe (43) is provided at the output end of the hydraulic cylinder (42), an electromagnetic distributor (44) is provided on the high-pressure oil return pipe (43), a first steel wire (5) is fixedly connected to one side of the linkage frame (421), the first steel wire (5) is fixedly connected to the first cross bar (22) through a first pulley block, a lifting platform (6) is provided between the two support frames (2), transverse rollers (61) are provided on both sides of the lifting platform (6), the surface of the transverse roller (61) is slidably connected to the inner surface of the support slide groove (21), a second steel wire (7) is fixedly connected to the other side of the linkage frame (421), the second steel wire (7) is fixedly connected to the second cross bar (23) through a second pulley block; The first pulley group comprises a first active pulley (51), a second active pulley (52), a third active pulley (53) and a first lifting pulley (54); the first active pulley (51) is arranged on one side of the support frame (2); The second active pulley (52) and the third active pulley (53) are respectively arranged on the two first cross bars (22), and the first lifting pulley (54) is arranged on the lifting platform (6); The surface of the first steel wire (5) is in transmission connection with the surface of the first active pulley (51), and the surface of the first steel wire (5) is respectively in transmission connection with the surfaces of the second active pulley (52) and the third active pulley (53), and one end of the first steel wire (5) is wound around the surface of the first lifting pulley (54) and then fixed to the bottom of the first cross bar (22); The second pulley group comprises a first linkage pulley (71), a second linkage pulley (72), a third linkage pulley (73), a fourth linkage pulley (74), a fifth linkage pulley (75), a sixth linkage pulley (76) and a second lifting pulley (77), the first linkage pulley (71) being arranged on one side of the auxiliary fixing frame (3), and the first linkage pulley (71) and the first active pulley (51) being on the same horizontal plane; The second linkage pulley (72) is arranged on the third crossbar (31), the third linkage pulley (73) and the fourth linkage pulley (74) are both arranged at the bottom of the support base (1), and the fourth linkage pulley (74) and the third linkage pulley (73) are on the same horizontal plane; The fifth linkage pulley (75) and the sixth linkage pulley (76) are respectively arranged on the two second cross bars (23); the bottom of the second lifting pulley (77) is arranged on one side of the top of the lifting platform (6); The surface of the second steel wire (7) is respectively connected to the surfaces of the first linkage pulley (71), the second linkage pulley (72), the third linkage pulley (73), the fourth linkage pulley (74), the fifth linkage pulley (75) and the sixth linkage pulley (76) in a transmission manner; one end of the second steel wire (7) is wound around the second lifting pulley (77) and then fixed to the bottom of the second cross bar (23); The support base (1) is provided with a threading hole (11), and the surface of the second steel wire (7) vertically passes through the threading hole (11). The bottom of the hydraulic cylinder (42) is fixedly connected to the top of the support base (1), and the output end of the high-pressure oil return pipe (43) is connected to the input end of the high-pressure pump station (4).

2. A lifting method of a hydraulic lifting system, using the hydraulic lifting system according to claim 1 to perform hydraulic lifting, characterized in that: The following steps are involved: S1 starts the high-pressure pump station (4), and the oil in the high-pressure pump station (4) is transported to the hydraulic cylinder (42) through the high-pressure oil guide pipe (41), thereby pushing the output end of the hydraulic cylinder (42) upward, and the output end of the hydraulic cylinder (42) synchronously pulls the first steel wire (5) and the second steel wire (7) through the linkage frame (421); When the first steel wire (5) is pulled upward, it drives one side of the top of the lifting platform (6) to move upward through the first pulley group, and when the second steel wire (7) is pulled upward, it drives the other side of the top of the lifting platform (6) through the second pulley group, thereby facilitating the synchronous upward pulling of both sides of the top of the lifting platform (6) to facilitate the upward adjustment of the lifting platform (6). When the lifting platform (6) reaches a specified height, the high-pressure pump station (4) can be closed; S3 When the lifting platform (6) needs to be lowered, the electromagnetic distributor (44) is started, and the electromagnetic distributor (44) opens the high-pressure oil return pipe (43), so that the oil in the hydraulic cylinder (42) flows back to the high-pressure pump station (4) through the high-pressure oil return pipe (43). As the amount of oil in the hydraulic cylinder (42) decreases, the output end of the hydraulic cylinder (42) gradually descends, achieving a lowering operation of the lifting height, thereby facilitating the lowering of the height of the lifting platform (6).

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