Oil cylinder lifting device for crane of vertical shaft heading machine

Abstract

The utility model relates to the technical field of open caisson construction equipment, in particular to an oil cylinder lifting device for a crane of a vertical shaft heading machine, which comprises a crane frame body, two round holes are formed in one side, close to a thrust oil cylinder, of the crane frame body, and an observation hole is formed in the other side of the crane frame body; supporting pipes are fixedly mounted in the two round holes; lifting pipes are inserted into the two supporting pipes; the fixing blocks are provided with threaded holes and fixed to the two ends of the lifting pipe. Connecting holes are formed in the two ends of the connecting plates, and bolts penetrate through the connecting holes to fix the connecting plates to the two ends of the two lifting pipes; the pull ring is fixed in the middle of the connecting plate; by stretching out or retracting the lifting device, the use requirements of the thrust oil cylinder in different states are met, site safety is guaranteed, smooth shaft construction is facilitated, and the lifting device is simple in structure, high in practicability, capable of being widely applied to the field of open caisson construction equipment and capable of generating good benefits.

Description

Technical Field

[0001] This utility model relates to the field of caisson construction equipment technology, specifically to a hydraulic cylinder lifting device for a hoist of a vertical shaft tunneling machine. Background Technology

[0002] Shaft boring machines (TBMs) are typically used in conjunction with cranes. When equipment malfunctions, the crane is needed to lift it out of the shaft. After repairs, the crane is used again to lift it back into the shaft for installation. The crane is also required to lift the TBM back out during retrieval. During the shaft's descent, uneven stress on the outer wall can easily cause the shaft to tilt; excessive friction on the outer wall can prevent descent. In these situations, thrust cylinders are typically used to apply external pressure to the top segments of the shaft, helping to overcome friction and adjust the shaft's posture. The thrust cylinders are integrated into the crane frame of the TBM and are evenly distributed around the shaft.

[0003] However, since the thrust cylinder pushes the shaft downwards, the cylinder rod will fall on its own due to gravity when there is no hydraulic support. Furthermore, when segment assembly is required at the bottom of the cylinder, the extended cylinder rod will obstruct the segment assembly, affecting the project progress. In addition, because the shaft construction period is long, the hydraulic system maintains the cylinder rod retracted; over time, pressure leakage or valve damage can cause the cylinder to extend. Moreover, during assembly and storage, sometimes oil supply and pressure maintenance are insufficient, causing the cylinder rod to slide down on its own, which can easily lead to serious safety accidents.

[0004] In view of this, in order to overcome the above-mentioned technical problems, this utility model designs and develops a hydraulic cylinder lifting device for the crane of a vertical shaft tunneling machine, which solves the above-mentioned technical problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model proposes a hydraulic cylinder lifting device for a hoist of a vertical shaft tunneling machine, which solves the technical problem of relying solely on a hydraulic system to maintain the retraction of the cylinder rod in existing technologies.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a hydraulic cylinder lifting device for a hoist of a vertical shaft tunneling machine, comprising: a hoist frame, a support pipe, a lifting pipe, a fixing block, a connecting plate, a pull ring, a curtain, an observation hole, and bolts;

[0007] The crane frame has two round holes on one side near the thrust cylinder and an observation hole on the other side; the support tubes are fixedly installed inside the two round holes; the lifting tubes are inserted inside the two support tubes; the fixing block has threaded holes and is fixed to both ends of the lifting tubes; the connecting plate has connecting holes at both ends, and the bolts pass through the connecting holes to fix the connecting plate to both ends of the two lifting tubes; the pull ring is fixed to the middle of the connecting plate; one end of the curtain is fixed above the observation hole.

[0008] Preferably, the curtain is made of soft rubber.

[0009] Preferably, the thrust cylinder can be installed at different heights on the crane frame, and the crane frame can be equipped with multiple lifting devices to meet the needs of different installation heights of the thrust cylinder.

[0010] In summary, this utility model has the following beneficial effects: by extending or retracting the lifting device, it meets the usage requirements of the thrust cylinder in different states, ensures on-site safety, facilitates the smooth progress of shaft construction, has a simple structure, is highly practical, can be widely used in the field of caisson construction equipment, and generates good benefits. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a utility model Figure 1 Sectional view at point BB;

[0014] In the diagram: 1. Crane frame, 2. Support pipe, 3. Lifting pipe, 4. Fixing block, 5. Connecting plate, 6. Pull ring, 7. Curtain, 8. Observation hole, 9. Bolt, 10. Thrust cylinder A. Detailed Implementation

[0015] 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, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0016] 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.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," 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 in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for 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.

[0018] It should also be noted that, in the description of this utility model, 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.

[0019] like Figure 1-2 As shown, the crane frame 1 has two round holes on one side near the thrust cylinder A, and an observation hole 8 on the other side; support pipes 2 are fixedly installed inside the two round holes; lifting pipes 3 are inserted inside the two support pipes 2; the fixing block 4 has threaded holes and is fixed to both ends of the lifting pipe 3; the connecting plate 5 has connecting holes at both ends, and bolts 9 pass through the connecting holes to fix the connecting plate 5 to both ends of the two lifting pipes 3; the pull ring 6 is fixed to the middle of the connecting plate 5; and one end of the curtain 7 is fixed above the observation hole 8.

[0020] Specifically, such as Figure 1 As shown, according to the installation height requirements of the thrust cylinder A on site, the thrust cylinder A is installed on the left side (front plate of the crane frame 1). Then, the cylinder rod of the thrust cylinder A is retracted, and two circular holes are made on the surface of the front plate of the crane frame 1 below the cylinder rod. The size of the two circular holes matches the outer diameter of the support pipe 2. Next, the two support pipes 2 are inserted and welded into the two circular holes respectively. The length of the support pipe 2 meets the force requirements when lifting the cylinder rod. The outer diameter of the lifting pipe 3 is smaller than the inner diameter of the support pipe 2, allowing the lifting pipe 3 to slide smoothly inside the support pipe 2. The length of the lifting pipe 3 meets the requirement for the cylinder rod to extend and be lifted, and is smaller than the width of the inner cavity of the crane frame 1, so that the lifting pipe 3 is completely accommodated within the cavity of the crane frame 1 when retracted.

[0021] Fixing blocks 4 are welded to both ends of the lifting tube 3. The fixing blocks 4 have threaded holes in the middle, and the size of the threaded holes matches the bolts 9. The connecting plate 5 has connecting holes at both ends. The distance between the two connecting holes corresponds to the position of the threaded holes of the fixing blocks 4 at the ends of the two lifting tubes 3. One connecting plate 5 is connected to the two lifting tubes 3 outside the front plate of the crane frame 1 by bolts 9, and the other connecting plate 5 is connected to the two lifting tubes 3 inside the front plate of the crane frame 1. The connecting plate 5 connects the two lifting tubes 3 into one unit, and is limited by the front plate of the crane frame 1 to prevent the lifting tubes 3 from detaching from the support tube 2 and slipping when they extend and retract.

[0022] A semi-circular pull ring 6 is welded in the middle of each of the two connecting plates 5. By pulling and pushing the pull ring 6, the extension and retraction of the two lifting tubes 3 can be achieved.

[0023] An observation hole 8 is made on the right side of the crane frame 1 (rear plate of the crane frame 1) corresponding to the position of the lifting device. The observation hole 8 facilitates the installation and maintenance of the lifting device. At the same time, during shaft construction, the lifting pipe 3 can be extended and retracted through the observation hole 8. The curtain 7 is made of soft rubber, which makes it easy to open and close, thus covering and opening the observation hole 8.

[0024] Example: After the thrust cylinder A and the crane frame 1 are assembled in the workshop and at the construction site, pulling the pull ring 6 near the bottom of the cylinder rod causes the two lifting pipes 3 to extend. When the cylinder rod extends under gravity, the end of the cylinder rod rests on the lifting pipe 3, preventing the cylinder rod from extending further and causing danger. When assembling tunnel segments during shaft construction, if there is sufficient assembly space below the thrust cylinder A, the lifting device can remain extended to prevent the cylinder rod from extending and hindering the segment assembly. If the assembly space is insufficient, oil can be supplied to the thrust cylinder A. Under pressure, the cylinder rod will be in a retracted state, and then the extended lifting pipe 3 will be pushed, causing the lifting pipe 3 to retract into the inner cavity of the crane frame 1, freeing up more space for segment assembly. Depending on the installation position of thrust cylinder A, multiple sets of bracket devices are provided. After the height of thrust cylinder A is adjusted, the lifting device at the nearest end of the cylinder rod is used, while the other sets of lifting devices retract into the inner cavity of the crane frame 1, thus meeting the usage requirements of thrust cylinder A in different positions.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A hydraulic cylinder lifting device for a hoist of a shaft boring machine, comprising: The thrust cylinder (A) is characterized in that it further includes: a crane frame (1), a support pipe (2), a lifting pipe (3), a fixing block (4), a connecting plate (5), a pull ring (6), a curtain (7), an observation hole (8), and a bolt (9); The crane frame (1) has two round holes on one side near the thrust cylinder (A) and an observation hole (8) on the other side; the support tube (2) is fixedly installed inside the two round holes; the lifting tube (3) is inserted inside the two support tubes (2); the fixing block (4) has threaded holes and is fixed to both ends of the lifting tube (3); the connecting plate (5) has connecting holes at both ends, and the bolt (9) passes through the connecting holes to fix the connecting plate (5) to both ends of the two lifting tubes (3); the pull ring (6) is fixed to the middle of the connecting plate (5); one end of the curtain (7) is fixed above the observation hole (8).

2. The hydraulic cylinder lifting device for a hoist of a vertical shaft tunneling machine according to claim 1, characterized in that: The curtain (7) is made of soft rubber.

3. The hydraulic cylinder lifting device for a hoist of a vertical shaft tunneling machine according to claim 1, characterized in that: The thrust cylinder (A) can be installed at different heights on the crane frame (1), and the crane frame (1) can be equipped with multiple lifting devices to meet the needs of different installation heights of the thrust cylinder (A).

Images