Cross-core type hydraulic lifter

Abstract

The utility model relates to the technical field of hydraulic lifters, in particular to a cross-core type hydraulic lifter which can lift or lower a large component to a preset height by means of matching of an upper anchorage device and a lower anchorage device, greatly improves the capability of locking a steel strand through matching of a locking spring and an upper pressing plate, and is convenient to use. According to the hydraulic lifter, the safety of lifting work is improved, the overhead anchor can serve as a safety structure, the safety of the component during hovering is improved, and the hydraulic lifter is high in bearing capacity, convenient to use, accurate, controllable and capable of being used for lifting and descending of various ultrahigh, oversized and overweight components on a large scale.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic lifter technology, specifically a through-type hydraulic lifter. Background Technology

[0002] With the development of the national economy, there is an increasing number of ultra-large, long-span, heavy, and high-height components in industries such as shipbuilding, steel metallurgy, petrochemicals, construction, and road transportation.

[0003] Conventional installation methods have significant limitations for these oversized, overweight, and overheight components, and both construction quality and safety need improvement. Hydraulic lifting construction technology is becoming increasingly widely used; therefore, this utility model proposes a through-hole hydraulic lifting device. Utility Model Content

[0004] The purpose of this utility model is to provide a through-hole hydraulic lifter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a through-type hydraulic lifter, comprising a top anchor, a support structure, an upper anchor, a main cylinder, and a lower anchor. The lower anchor is installed at the bottom of the inner cavity of the support structure, the top anchor is installed at the top of the support structure, the main cylinder is installed in the middle of the support structure, and the upper anchor is installed above the main cylinder inside the support structure.

[0006] The upper anchor includes a first cylinder, a piston, and an upper flange. The piston is installed inside the first cylinder, and the upper flange is installed above the first cylinder. An upper pressure plate is provided above the upper flange, and several locking springs are provided at the bottom of the upper pressure plate.

[0007] The main cylinder includes a second cylinder body, a piston cylinder, and a support cylinder. The piston cylinder is placed in the second cylinder body, and the top end of the piston cylinder extends out of the second cylinder body. The support cylinder is fixed inside the piston cylinder.

[0008] Preferably, a wedge-shaped guide hole is provided at the top of the first cylinder, and a wedge-shaped clamp is movably connected inside the wedge-shaped guide hole.

[0009] Preferably, the upper flange is fixed to the top of the first cylinder body by bolts, and the upper pressure plate is fixed to the surface of the upper flange by bolts.

[0010] Preferably, the locking spring is placed between the upper pressure plate and the upper flange, and the retraction spring is connected to the wedge-shaped clamp by a screw passing through the upper flange.

[0011] Preferably, the upper anchor is fixed to the top of the piston cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model's through-hole hydraulic lifter, with the cooperation of upper and lower anchors, can lift or lower large components to a predetermined height. This utility model, through the locking spring and upper pressure plate, greatly improves the ability to lock the steel strands and improves the safety of the lifting operation. The top anchor can serve as a safety structure to improve the safety of the component when it is suspended. This utility model's hydraulic lifter has a strong load-bearing capacity, is easy to use, and is precise and controllable. It can be used on a large scale for lifting and lowering various ultra-high, ultra-large, and ultra-heavy components. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the upper anchor structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the main oil cylinder structure of this utility model.

[0016] In the diagram: 1. Top anchor; 2. Support structure; 3. Upper anchor; 31. First cylinder; 32. Piston; 33. Locking spring; 34. Upper pressure plate; 35. Upper flange; 36. Wedge-shaped clamp; 4. Main cylinder; 41. Second cylinder; 42. Piston cylinder; 43. Support cylinder; 5. Lower anchor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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.

[0019] 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 according to the specific circumstances.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a through-type hydraulic lifter, including a top anchor 1, a support structure 2, an upper anchor 3, a main oil cylinder 4 and a lower anchor 5. The lower anchor 5 is installed at the bottom of the inner cavity of the support structure 2, the top anchor 1 is installed at the top of the support structure 2, the main oil cylinder 4 is installed in the middle of the inside of the support structure 2, and the upper anchor 3 is installed above the main oil cylinder 4 inside the support structure 2.

[0021] The upper anchor 3 includes a first cylinder 31, a piston 32 and an upper flange 35. The piston 32 is installed inside the first cylinder 31, the upper flange 35 is installed above the first cylinder 31, an upper pressure plate 34 is provided above the upper flange 35, and several locking springs 33 are provided at the bottom of the upper pressure plate 34.

[0022] The main cylinder 4 includes a second cylinder body 41, a piston cylinder 42 and a support cylinder 43. The piston cylinder 42 is placed in the second cylinder body 41 and the top of the piston cylinder 42 extends out of the second cylinder body 41. The support cylinder 43 is fixed inside the piston cylinder 42.

[0023] Furthermore, a wedge-shaped guide hole is provided at the top of the first cylinder 31, and a wedge-shaped clamp 36 is movably connected inside the wedge-shaped guide hole.

[0024] Furthermore, the upper flange 35 is fixed to the top of the first cylinder 31 by bolts, and the upper pressure plate 34 is fixed to the surface of the upper flange 35 by bolts.

[0025] Furthermore, the locking spring 33 is positioned between the upper pressure plate 34 and the upper flange 35, and the retracting spring 33 is connected to the wedge-shaped clamp 36 via a screw passing through the upper flange 35. The locking spring 33, located between the upper flange 35 and the upper pressure plate 34, can consistently apply downward pressure to the wedge-shaped clamp 36, ensuring that the wedge-shaped clamp 36 is always pressed into the wedge-shaped guide hole of the anchor piston 32. This allows the steel strand to be clamped during descent, providing a self-locking characteristic and significantly improving safety during the lifting process. When the steel strand is released, the anchor cylinder retracts, the anchor piston 32 moves downward relative to the wedge-shaped clamp 36, the wedge-shaped clamp 36 separates, and the steel strand can move freely up and down.

[0026] Furthermore, the upper anchor is fixed to the top of the piston cylinder 42.

[0027] Specifically, the top anchor 1 of the support structure 2 can be manually locked and can be used as a safety structure to lock the steel strand when the component is suspended for a long time. The main hydraulic cylinder 4 is fixed in the middle of the support structure 2 to provide power for the lifting operation. The main hydraulic cylinder 4 adopts a through-hole structure, through which the steel strand can pass. Both the upper anchor 3 and the lower anchor 5 are locked by hydraulic cylinders. By pressing in hydraulic oil, the piston 32 is lifted, so that the wedge-shaped clamp 36 is pressed into the wedge-shaped guide hole of the anchor piston 32 through the upper pressure plate 34, thereby clamping the steel strand. The locking spring 33 between the upper pressure plate 34 and the upper flange 35 ensures that the wedge-shaped clamp 36 is always pressed into the wedge-shaped guide hole of the anchor piston 32, which has good self-locking ability and can effectively prevent the steel strand from slipping, thereby improving the safety of the hydraulic lifter during operation. During the lifting process, the upper anchor 3 clamps the steel strand, and the main hydraulic cylinder 4 lifts the upper anchor 3 and the steel strand by one stroke, simultaneously raising the component below the steel strand by one stroke. Then, the lower anchor 5 clamps the steel strand, the upper anchor 3 releases the steel strand, and the main hydraulic cylinder 4 retracts, returning to its original position. This process is repeated until the component is lifted to the predetermined height.

[0028] Working principle: This through-hole hydraulic lifter uses hydraulic oil as a power source to drive the main cylinder 4 to lift the components. Its structure from top to bottom consists of the top anchor 1, the upper anchor 3, the main cylinder 4, and the lower anchor 5. The steel strand passes through the lower anchor 5, exits through the hollow structure inside the main cylinder 4, and passes through the upper anchor 3 and out of the top anchor 1. When lifting the component, first, the upper anchor 4 is locked. The hydraulic oil pushes up the piston 32 of the upper anchor 3. The wedge-shaped guide hole inside the piston 32 drives the wedge-shaped clamp 36 to move upward. At the same time, the locking spring 33 presses the upper pressure plate 34. At this time, the locking spring 33 will apply a downward pressure to the wedge-shaped clamp 36. The downward pressure presses the wedge-shaped clamp 36 into the wedge-shaped guide hole of the piston 32 and tightly clamps the steel strand 6. After the upper anchor 3 is locked, the lower anchor 5 is released, the main cylinder 3 extends, and the hydraulic oil pushes the piston cylinder 42 upward. The piston cylinder 42, together with the upper anchor 3, drives the steel strand 6 to move upward. The component is lifted by one stroke. After the main cylinder 3 extends to the top, the lower anchor 5 locks the steel strand 6, the upper anchor 3 is released, the main cylinder 4 retracts, and returns to its original position. This cycle is repeated to lift or lower the component to the predetermined height. The Sky Anchor 1 has a structure similar to an anchor and can be used as a safety measure by manually locking the wire rope.

[0029] Due to the action of the locking spring 33, each anchor can always apply a downward pressure to the wedge-shaped clamp 36, so that the wedge-shaped clamp 36 is always in contact with the steel strand. If the steel strand falls, the wedge-shaped clamp 36 will stick to the wedge-shaped guide hole in the upper anchor piston 32 under the action of friction. At this time, the wedge-shaped clamp 36 will clamp the steel strand 6 under the action of the wedge-shaped guide hole, preventing the steel strand 6 from sliding down.

[0030] This utility model is applicable to the lifting and lowering of ultra-large, ultra-heavy, and ultra-high components under various working conditions. The design of double anchors greatly improves the safety during the lifting process. It has strong load-bearing capacity, is easy to use, safe and reliable, and can be widely used in various lifting projects.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A through-type hydraulic lifter, comprising a top anchor (1), a support structure (2), an upper anchor (3), a main cylinder (4), and a lower anchor (5), characterized in that: The bottom of the inner cavity of the support structure (2) is equipped with a lower anchor (5), the top of the support structure (2) is equipped with a top anchor (1), the middle of the inside of the support structure (2) is equipped with a main oil cylinder (4), and the upper anchor (3) is installed above the main oil cylinder (4) inside the support structure (2). The upper anchor (3) includes a first cylinder (31), a piston (32) and an upper flange (35). The piston (32) is installed inside the first cylinder (31), and the upper flange (35) is installed above the first cylinder (31). An upper pressure plate (34) is provided above the upper flange (35), and a plurality of locking springs (33) are provided at the bottom of the upper pressure plate (34). The main cylinder (4) includes a second cylinder body (41), a piston cylinder (42) and a support cylinder (43). The piston cylinder (42) is placed in the second cylinder body (41) and the top end of the piston cylinder (42) extends out of the second cylinder body (41). The support cylinder (43) is fixed inside the piston cylinder (42).

2. The through-hole type hydraulic lifter according to claim 1, characterized in that: The top of the first cylinder (31) is provided with a wedge-shaped guide hole, and a wedge-shaped clamp (36) is movably connected inside the wedge-shaped guide hole.

3. A through-hole type hydraulic lifter according to claim 1, characterized in that: The upper flange (35) is fixed to the top of the first cylinder (31) by bolts, and the upper pressure plate (34) is fixed to the surface of the upper flange (35) by bolts.

4. A through-hole type hydraulic lifter according to claim 1, characterized in that: The locking spring (33) is placed between the upper pressure plate (34) and the upper flange (35), and the locking spring (33) is connected to the wedge clip (36) by a screw that passes through the upper flange (35).

5. A through-hole type hydraulic lifter according to claim 1, characterized in that: The upper anchor is fixed to the top of the piston cylinder (42).

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