Lifting hook connecting structure of hydraulic lifting type monorail crane

Abstract

The utility model discloses a lifting hook connecting structure of a hydraulic lifting type monorail crane, which relates to the technical field of monorail crane accessories, and comprises a monorail crane hung at the lower part of a mine tunnel top plate, a hydraulic telescopic cylinder is fixedly arranged at the lower part of the monorail crane, the hydraulic telescopic cylinder vertically extends downwards, the bottom of the hydraulic telescopic cylinder is connected with a hanging plate, and the hydraulic telescopic cylinder is connected with a hydraulic system. Therefore, up-and-down stretching is realized, and the lifting height of the monorail crane is adjusted; the hydraulic lifting hook is adopted for connection, the length of the hydraulic cylinder can be adjusted according to the height of a mine tunnel, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the technical field of monorail crane accessories, specifically to a hydraulic lifting monorail crane hook connection structure. Background Technology

[0002] A monorail is a transportation system that uses specially designed I-beams suspended above a tunnel as a track. It consists of multiple functional gantry cars connected together and driven by traction power such as diesel engines and batteries, running along the track. It is mainly used for auxiliary transportation in underground environments such as coal mines. The core components of a monorail include the I-beam track suspended from the top of the tunnel, the gantry cars driven by traction equipment (such as diesel engines, batteries, or wire ropes), and the gantry cars with lifting and transportation functions. It operates by moving linearly along the monorail and is suitable for continuous transportation in horizontal and inclined tunnels.

[0003] like Figure 1 As shown, when using a monorail crane to lift hydraulic supports in a mine, a hook and chain structure is used for connection. Since the height varies in different parts of the mine tunnel, the required chain length is also different at each location. Therefore, various chains of different lengths usually need to be prepared in the warehouse for easy replacement according to the height of the mine tunnel each time it is used. This is time-consuming, labor-intensive, and wastes money and warehouse space. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic lifting monorail crane hook connection structure. The hydraulic lifting hook is used for connection, and the length of the hydraulic cylinder can be adjusted according to the height of the mine tunnel. There is no need to replace the chain every time, saving time and effort.

[0005] This utility model includes a monorail crane suspended below the top of the mine tunnel. A hydraulic telescopic cylinder is fixedly installed at the lower part of the monorail crane. The hydraulic telescopic cylinder extends vertically downward and is connected to a hanging plate at the bottom. The hydraulic telescopic cylinder is connected to a hydraulic system to provide power, thereby realizing vertical extension and retraction to adjust the lifting height of the monorail crane.

[0006] Preferably, there are no fewer than four hydraulic telescopic cylinders, which are distributed at intervals on the front, rear, left and right sides of the monorail.

[0007] Preferably, the lower part of the mounting plate is movably connected with a shackle, and the mounting plate and the hydraulic support are connected by the shackle.

[0008] Preferably, the hydraulic telescopic cylinder is a three-stage telescopic cylinder.

[0009] Preferably, the hydraulic telescopic cylinder is externally fitted with a sleeve, the inner diameter of which is adapted to the maximum size of the outer contour of the shackle; both the left and right sides of the sleeve are provided with through holes penetrating the sleeve wall, and bolts penetrating the sleeve wall are installed in the through holes, with positioning nuts screwed onto the outside of the bolts; on the outer wall of the first-stage telescopic cylinder of the hydraulic telescopic cylinder, a semi-circular recess is provided at the corresponding position of the bolt.

[0010] Preferably, a plurality of recesses are provided, which are arranged at intervals along the vertical direction on the left and right side walls of the first-stage telescopic cylinder.

[0011] Preferably, the inner end of the bolt is provided with a hemispherical positioning protrusion that can be engaged into the recess.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. When the height of different parts of the mine tunnel is inconsistent, in order to ensure stable lifting and consistent height at all lifting points, only the length of the hydraulic telescopic cylinders at each location needs to be adjusted. This eliminates the need to frequently replace chains of different lengths, and there is no need to keep spare chains of different lengths in the warehouse, saving costs and warehouse space. At the same time, using hydraulic telescopic cylinders instead of chain-structured lifting hooks can save time on chain replacement, improve work efficiency, and the height adjustment of hydraulic telescopic cylinders is more precise, flexible, efficient, and time-saving. The lifted items are less likely to sway during the lifting process, making the lifting more stable.

[0014] 2. Install a sleeve on the outside of the shackle to make lifting more stable and safer, and prevent the shackle from shaking during the lifting process, which could cause the object to be lifted to swing and thus cause a safety accident. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the monorail chain-type lifting hook currently used as described in the background art;

[0016] Figure 2 This utility model provides a schematic diagram of an embodiment of a hydraulic lifting monorail crane hook connection structure.

[0017] Figure 3 for Figure 2 A close-up view of the hydraulic telescopic cylinder.

[0018] Figure 4 This is a schematic diagram of the structure of the sleeve in the upper part of Embodiment 2 of the hydraulic lifting monorail crane hook connection structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the sleeve in the lower part of Embodiment 2 of the hydraulic lifting monorail crane hook connection structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the casing structure.

[0021] In the diagram: 1. Monorail crane; 2. Hydraulic telescopic cylinder; 3. Hanging plate; 4. Shackle; 5. Sleeve; 6. Bolt; 7. Positioning nut; 8. Positioning protrusion; 20. Chain; 50. Top plate; 100. Hydraulic support. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] The orientations mentioned in this specification are based on the orientation of the hydraulic lifting monorail crane hook connection structure of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0024] Example 1:

[0025] like Figure 2 and Figure 3 As shown, a hydraulic lifting monorail crane hook connection structure includes a monorail crane 1 suspended below the mine tunnel roof 50. A hydraulic telescopic cylinder 2 is fixedly installed on the lower part of the monorail crane 1. There are at least four hydraulic telescopic cylinders 2, spaced apart on the front, rear, left, and right sides of the monorail crane 1. The hydraulic telescopic cylinders 2 extend vertically downwards and are connected to a hanging plate 3 at their bottom. A shackle 4 is movably connected to the lower part of the hanging plate 3. The hanging plate 3 and a hydraulic support 100 are connected via the shackle 4. The shackle 4 can swing back and forth around the hanging plate 3 to facilitate connection with the hydraulic support 100. The hydraulic telescopic cylinder 2 is a three-stage telescopic cylinder, allowing for a longer telescopic length and more flexible adjustment. The hydraulic telescopic cylinder 2 is connected to a hydraulic system, providing power to achieve vertical extension and retraction, thus adjusting the lifting height of the monorail crane 1.

[0026] When the height of different parts of the mine tunnel is inconsistent, in order to ensure stable lifting and consistent height of all lifting points, it is only necessary to adjust the length of the hydraulic telescopic cylinder 2 at each location to achieve consistent lifting height at all positions, without the need to frequently replace chains 20 of different lengths. This also eliminates the need to keep spare chains 20 of different lengths in the warehouse, saving costs and warehouse space. At the same time, using hydraulic telescopic cylinder 2 instead of chain 20 structure lifting hooks can save time for replacing chains 20, improving work efficiency. In addition, the height adjustment of hydraulic telescopic cylinder 2 is more precise, flexible, efficient, and time-saving, and the lifted items are less likely to sway during the lifting process, making the lifting more stable.

[0027] Example 2:

[0028] The difference between this embodiment and Embodiment 1 is that, Figures 4 to 6As shown, a sleeve 5 is movably sleeved on the outside of the hydraulic telescopic cylinder 2. The inner diameter of the sleeve 5 is adapted to the maximum dimension of the outer contour of the shackle 4. Both the left and right sides of the sleeve 5 are provided with through holes penetrating the wall of the sleeve 5. Bolts 6 that penetrate the wall of the sleeve 5 are installed in the through holes. A positioning nut 7 is screwed onto the outside of the bolt 6. The length of the sleeve 5 is greater than the sum of the longest extension lengths of the second and third stage telescopic cylinders of the hydraulic telescopic cylinder 2. On the outer wall of the first stage telescopic cylinder of the hydraulic telescopic cylinder 2, at the corresponding position of the bolt 6, there is a semi-circular recess. Several recesses are provided and are spaced vertically on the left and right side walls of the first stage telescopic cylinder. The inner end of the bolt 6 is provided with a hemispherical positioning protrusion 8 that can be inserted into the recess. By moving the sleeve 5 to a suitable position, inserting the bolt 6 into the through hole, and making the hemispherical positioning protrusion 8 at the inner end of the bolt 6 engage with the recess on the outer wall of the first stage telescopic cylinder, and tightening the positioning nut 7, the sleeve 5 can be fixed.

[0029] When the hydraulic telescopic cylinder 2 is extending, the sleeve 5 is fixed to the uppermost end of the first-stage telescopic cylinder by bolts 6 and nuts. At this time, the lower part of the sleeve 5 is located above the shackle 4 and does not limit the shackle 4. When the hydraulic telescopic cylinder 2 extends to a suitable length, the shackle 4 is swung back and forth slightly to align it with the connection part on the hydraulic support 100, connecting the hydraulic support 100 and the shackle 4. Before lifting, the positioning nut 7 is loosened, the sleeve 5 is lowered so that its lower end is fitted over the outside of the shackle 4, and then a suitable position is found so that the positioning protrusion 8 is inserted into the recess on the outer wall of the first-stage telescopic cylinder. The positioning nut 7 is then tightened to fix the sleeve 5. At this time, during lifting, due to the limiting effect of the sleeve 5, the shackle 4 is not easy to swing back and forth, making the lifting more stable.

[0030] It should be noted that if the connecting part on the hydraulic support 100 is far from the position of the shackle 4, and the shackle 4 is swung around significantly and then directly connected to the hydraulic support 100, when lowering the sleeve 5, the sleeve 5 may not be able to fit over the shackle 4 due to the excessive tilt angle of the shackle 4. In this case, it is necessary to adjust the relative position between the monorail crane 1 and the hydraulic support 100 so that the connecting part on the hydraulic support 100 is almost aligned with the position of the shackle 4.

[0031] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A hydraulic lifting monorail crane hook connection structure, characterized in that: Includes a monorail crane (1) suspended below the top plate (50) of the mine tunnel. A hydraulic telescopic cylinder (2) is fixedly installed on the lower part of the monorail crane (1). The hydraulic telescopic cylinder (2) extends vertically downward and is connected to a hanging plate (3) at the bottom. The hydraulic telescopic cylinder (2) is connected to a hydraulic system to provide power for it, thereby realizing vertical extension and retraction to adjust the lifting height of the monorail crane (1).

2. The hydraulic lifting monorail crane hook connection structure as described in claim 1, characterized in that: The hydraulic telescopic cylinder (2) is provided with no less than 4 cylinders, which are distributed at intervals on the front, back, left and right sides of the monorail (1).

3. The hydraulic lifting monorail crane hook connection structure as described in claim 1, characterized in that: The lower part of the mounting plate (3) is movably connected to a shackle (4), and the mounting plate (3) and the hydraulic support (100) are connected by the shackle (4).

4. The hydraulic lifting monorail crane hook connection structure as described in claim 3, characterized in that: The hydraulic telescopic cylinder (2) is a three-stage telescopic cylinder.

5. The hydraulic lifting monorail crane hook connection structure as described in claim 4, characterized in that: The hydraulic telescopic cylinder (2) is externally fitted with a sleeve (5), the inner diameter of which is adapted to the maximum size of the outer contour of the shackle (4); both the left and right sides of the sleeve (5) are provided with through holes penetrating the wall of the sleeve (5), and bolts (6) penetrating the wall of the sleeve (5) are installed in the through holes, and positioning nuts (7) are screwed onto the outside of the bolts (6); on the outer wall of the first-stage telescopic cylinder of the hydraulic telescopic cylinder (2), a semi-circular recess is provided at the corresponding position of the bolts (6).

6. The hydraulic lifting monorail crane hook connection structure as described in claim 5, characterized in that: The recessed portion is provided in several places, and is arranged at intervals along the vertical direction on the left and right side walls of the first-stage telescopic cylinder.

7. The hydraulic lifting monorail crane hook connection structure as described in claim 5, characterized in that: The inner end of the bolt (6) is provided with a hemispherical positioning protrusion (8) that can be inserted into the recess.

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