Lifting appliance for underground excavation trolley

Abstract

The utility model discloses a lifting appliance for an underground excavation trolley, and relates to the technical field of construction lifting appliances, the lifting appliance comprises a lifting plate, a bearing plate, a winding mechanism, a first steel wire rope and a second steel wire rope, the bearing plate is located on the lower side of the lifting plate, and four corners of the upper end of the bearing plate are connected with four corners of the lower end of the lifting plate through the second steel wire rope; the winding mechanism is installed at the lower end of the lifting plate and used for winding the second steel wire rope so as to adjust the inclination of the bearing plate. The winding directions of the second steel wire ropes on the two rotating shafts are opposite, the first driving motor drives one rotating shaft to rotate so as to wind the second steel wire ropes wound on the outer side of the rotating shaft, and the other rotating shaft synchronously rotates under the matching action of the transmission chain wheel and the transmission chain. And the second steel wire ropes on the two sides of the bearing plate are wound and unwound at the same time, and the inclination degree of the bearing plate can be rapidly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of construction lifting equipment technology, and in particular to a lifting equipment for a tunnel excavation trolley. Background Technology

[0002] In subway transfer stations, station entrances and exits, transfer passages, and short subway tunnels within city stations, the cut-and-cover construction technique is mostly adopted. In order to realize mechanized construction of cut-and-cover tunnels to replace manual construction, the machinery and equipment must be able to perform multiple functions such as digging, loading, milling, anchoring, and auxiliary support in confined spaces. Such equipment will be relatively large in size and requires specialized lifting equipment to lift and transport the equipment to the construction section through a vertical shaft (more than 20 meters deep).

[0003] Regarding the aforementioned lifting device, a search revealed a lifting device for a tunnel boring machine (TBM) trolley, disclosed in patent publication number CN212101621U. This device includes lifting plates, a front connector, a rear connector, first connecting rods, and second connecting rods. When the lifting device is in operation, two second connecting rods are arranged parallel to each other along the width of the TBM trolley. Two first connecting rods are respectively fitted onto the two ends of the second connecting rods, forming a quadrilateral located above the TBM trolley. On both sides of the TBM trolley, there is a front connector and a rear connector. The upper end of the front connector is fitted onto the second connecting rod, and the lower end is fixedly connected to the front end of the track beam. The upper end of the rear connector is fitted onto the second connecting rod, and the lower end is fixedly connected to the rear end of the track beam. Four lifting plates are respectively fitted onto the ends of the second connecting rods and then secured with nuts and washers. Steel wire ropes are threaded through the lifting plates for connection to the lifting device.

[0004] Based on the above search and analysis of existing technologies, it has been found that the lengths of the front and rear connecting parts of existing lifting devices similar to those disclosed above are fixed and cannot be adjusted. In practical use, it is difficult to select a suitable length of connecting part for on-site installation according to the size of the machinery, making the operation quite cumbersome. Therefore, a lifting device for underground excavation trolleys is proposed to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this application is to provide a lifting device for a cut-and-cover excavation trolley to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a lifting device for a cut-and-cover excavation trolley, comprising:

[0007] The lifting platform has a first steel wire rope fixed at each of the four corners at the top.

[0008] The support plate is located below the lifting plate, and the upper four corners of the support plate are connected to the lower four corners of the lifting plate by a second steel wire rope.

[0009] The winding mechanism, installed at the lower end of the lifting plate, is used to wind the second wire rope to adjust the inclination of the support plate.

[0010] As a further supplement to this solution, the winding mechanism includes a first drive motor, a rotating shaft, and a transmission assembly;

[0011] There are two rotating shafts, which are arranged in parallel and horizontally rotatable at the lower end of the lifting plate. Two second steel wire ropes located on the same side of the lifting plate are wound around the two ends of the rotating shafts respectively, and the transmission assembly is connected between the two rotating shafts.

[0012] The output end of the first drive motor is fixed coaxially with one of the rotating shafts. When the first drive motor drives the rotating shaft to rotate, the tilt of the support plate changes.

[0013] As a further supplement to this solution, the transmission assembly includes a transmission sprocket and a transmission chain. The two transmission sprockets are coaxially fixedly sleeved on two rotating shafts, and the transmission chain is drivingly connected between the two transmission sprockets.

[0014] The second wire ropes on the two rotating shafts are wound in opposite directions.

[0015] As a further supplement to this solution, a counterweight is slidably installed at the lower end of the support plate along the length of the transmission chain, and support feet are fixed at the four corners of the lower end of the support plate, with the height of the support feet being greater than the thickness of the counterweight.

[0016] As a further supplement to this solution, a second drive motor is installed at the lower end of the support plate, and a threaded rod and a limiting slide rod are horizontally provided at the lower end of the support plate.

[0017] The threaded rod is rotatably connected to the support plate, and one end of the threaded rod is coaxially fixed with the output shaft of the second drive motor. The threaded rod passes through the counterweight block. The limiting slide rod is fixedly connected to the support plate, and the limiting slide rod slides through the counterweight block.

[0018] As a further supplement to this solution, anti-detachment baffles are rotatably installed at both ends of the upper end of the support plate along the length of the threaded rod. On the side of the two anti-detachment baffles that are far apart from each other, there is a limiting block that is fixed to the support plate. When the anti-detachment baffle is rotated to contact the limiting block, the anti-detachment baffle is at a 90° angle to the support plate.

[0019] In summary, the technical effects and advantages of this utility model are as follows:

[0020] 1. In this utility model, by setting the winding directions of the second steel wire ropes on the two rotating shafts to be opposite, the first drive motor drives one of the rotating shafts to rotate to wind up the second steel wire rope wound on its outer side, while the other rotating shaft rotates synchronously under the cooperation of the transmission sprocket and the transmission chain to lower the second steel wire rope wound on its outer side. The second steel wire ropes on both sides of the support plate are wound up and released at the same time, which can quickly adjust the inclination of the support plate.

[0021] 2. In this utility model, the counterweight, threaded rod, second drive motor and limit slide are arranged in a coordinated manner. The second drive motor drives the threaded rod to rotate to adjust the position of the counterweight, so that the support plate is relatively balanced by force and is not easy to tip over. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment;

[0024] Figure 2 This is a structural schematic diagram of the lifting plate in this embodiment;

[0025] Figure 3 This is a schematic diagram of the support plate in this embodiment.

[0026] In the diagram: 1. Lifting plate; 2. Support plate; 3. First wire rope; 4. Second wire rope; 5. First drive motor; 6. Shaft; 7. Transmission sprocket; 8. Transmission chain; 9. Anti-detachment baffle; 10. Limiting block; 11. Counterweight; 12. Second drive motor; 13. Threaded rod; 14. Limiting slide bar; 15. Support foot. Detailed Implementation

[0027] 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.

[0028] Example: Reference Figure 1-3The lifting device shown is for a tunnel excavation trolley, including a lifting plate 1, a first wire rope 3, a support plate 2, a second wire rope 4, and a winding mechanism.

[0029] The upper four corners of the lifting plate 1 are fixed to the first steel wire rope 3. The support plate 2 is located on the lower side of the lifting plate 1, and the upper four corners of the support plate 2 are connected to the lower four corners of the lifting plate 1 by the second steel wire rope 4. The winding mechanism is installed at the lower end of the lifting plate 1 and is used to wind the second steel wire rope 4 to adjust the inclination of the support plate 2.

[0030] Regarding the winding mechanism, specifically, such as Figure 2 As shown, the winding mechanism includes a first drive motor 5, a rotating shaft 6, and a transmission assembly. There are two rotating shafts 6, which are arranged in parallel and horizontally rotatably mounted on the lower end of the lifting plate 1. Two second steel wire ropes 4 located on the same side of the lifting plate 1 are wound around the two ends of the rotating shafts 6 respectively. The output end of the first drive motor 5 is coaxially fixed with one of the rotating shafts 6. When the first drive motor 5 drives the rotating shaft 6 to rotate, the tilt of the support plate 2 changes. The transmission assembly includes a transmission sprocket 7 and a transmission chain 8. The two transmission sprockets 7 are coaxially fixed and sleeved on the two rotating shafts 6 respectively. The transmission chain 8 is connected between the two transmission sprockets 7. The winding directions of the second steel wire ropes 4 on the two rotating shafts 6 are opposite.

[0031] Since the second wire ropes 4 on the two rotating shafts 6 are wound in opposite directions, when the first drive motor 5 drives one of the rotating shafts 6 to rotate to wind up the second wire rope 4 wound on its outer side, the other rotating shaft 6 rotates synchronously under the cooperation of the transmission sprocket 7 and the transmission chain 8 to lower the second wire rope 4 wound on its outer side. The second wire ropes 4 on both sides of the support plate 2 are wound up and unwound at the same time, which can quickly adjust the inclination of the support plate 2.

[0032] To prevent the support plate 2 from tipping over under the action of mechanical equipment, a counterweight 11 is slidably installed at the lower end of the support plate 2 along the length of the transmission chain 8. Specifically, a second drive motor 12 is installed at the lower end of the support plate 2, and a threaded rod 13 and a limiting slide rod 14 are horizontally arranged at the lower end of the support plate 2. The threaded rod 13 is rotatably connected to the support plate 2, and one end of the threaded rod 13 is coaxially fixed with the output shaft of the second drive motor 12. The threaded rod 13 is threaded through the counterweight 11, and the limiting slide rod 14 is fixedly connected to the support plate 2 and slides through the counterweight 11. The second drive motor 12 drives the threaded rod 13 to rotate to adjust the position of the counterweight 11, so that the support plate 2 is relatively balanced under force and is not prone to tipping over.

[0033] Support feet 15 are fixed at the four corners of the lower end of the support plate 2. The height of the support feet 15 is greater than the thickness of the counterweight 11.

[0034] Among them, anti-detachment baffles 9 are rotatably installed at both ends of the upper end of the support plate 2 along the length of the threaded rod 13. On the side of the two anti-detachment baffles 9 that are far apart from each other, there is a limiting block 10 fixed to the support plate 2. When the anti-detachment baffle 9 is rotated to the state of contact with the limiting block 10, the anti-detachment baffle 9 and the support plate 2 are at 90°. For mechanical equipment that is placed on the upper side of the support plate 2 at an incline, in addition to using conventional fixing methods to fix the mechanical equipment to the support plate 2, the anti-detachment baffles 9 can also be used to limit the mechanical equipment and prevent the mechanical equipment from slipping off the support plate 2.

[0035] The working principle of this utility model is as follows: The mechanical equipment is placed on the support plate 2 and fixed to the support plate 2 using conventional fixing methods, such as binding with nylon rope, or the anti-detachment baffle 9 on the downward tilting side of the mechanical equipment is flipped upward to form a 90° angle with the support plate 2 to limit the mechanical equipment.

[0036] Next, the first drive motor 5 drives one of the rotating shafts 6 to rotate, so as to wind up the second steel wire rope 4 wound on its outer side. At the same time, the other rotating shaft 6 rotates synchronously under the cooperation of the transmission sprocket 7 and the transmission chain 8 to lower the second steel wire rope 4 wound on its outer side. The second steel wire rope 4 on both sides of the support plate 2 is wound up and unwound at the same time, so as to quickly adjust the inclination of the support plate 2, specifically to enable the mechanical equipment to be lifted and transported to the construction section through the shaft. In addition, the second drive motor 12 drives the threaded rod 13 to rotate to adjust the position of the counterweight 11, so that the support plate 2 is relatively balanced by force.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lifting device for a tunnel boring machine (TBM) trolley, characterized in that, include: Lifting plate (1), with first steel wire ropes (3) fixed at the four corners of the upper end of the lifting plate (1); Support plate (2), the support plate (2) is located on the lower side of the lifting plate (1), and the upper four corners of the support plate (2) are connected to the lower four corners of the lifting plate (1) by the second steel wire rope (4); A winding mechanism is installed at the lower end of the lifting plate (1) for winding the second wire rope (4) to adjust the inclination of the support plate (2).

2. The lifting device for a tunnel boring machine trolley according to claim 1, characterized in that: The winding mechanism includes a first drive motor (5), a rotating shaft (6), and a transmission assembly; There are two rotating shafts (6), and the two rotating shafts (6) are arranged in parallel and are horizontally rotatably installed at the lower end of the lifting plate (1). The two second steel wire ropes (4) located on the same side of the lifting plate (1) are respectively wound around the two ends of the rotating shafts (6). The transmission assembly is connected between the two rotating shafts (6). The output end of the first drive motor (5) is coaxially fixed with one of the rotating shafts (6). When the first drive motor (5) drives the rotating shaft (6) to rotate, the tilt of the support plate (2) changes.

3. A lifting device for a tunnel boring machine trolley according to claim 2, characterized in that: The transmission assembly includes a transmission sprocket (7) and a transmission chain (8). The two transmission sprockets (7) are coaxially fixedly sleeved on the two rotating shafts (6), and the transmission chain (8) is connected between the two transmission sprockets (7). The second wire rope (4) on the two shafts (6) are wound in opposite directions.

4. A lifting device for a tunnel boring machine trolley according to claim 3, characterized in that: A counterweight (11) is slidably installed at the lower end of the support plate (2) along the length of the transmission chain (8). Support feet (15) are fixed at the four corners of the lower end of the support plate (2). The height of the support feet (15) is greater than the thickness of the counterweight (11).

5. A lifting device for a tunnel boring machine trolley according to claim 4, characterized in that: The lower end of the support plate (2) is equipped with a second drive motor (12), and the lower end of the support plate (2) is horizontally provided with a threaded rod (13) and a limiting slide rod (14). The threaded rod (13) is rotatably connected to the support plate (2), and one end of the threaded rod (13) is coaxially fixed with the output shaft of the second drive motor (12). The threaded rod (13) is threaded through the counterweight (11). The limiting slide rod (14) is fixedly connected to the support plate (2), and the limiting slide rod (14) slides through the counterweight (11).

6. A lifting device for a tunnel boring machine trolley according to claim 5, characterized in that: The upper end of the support plate (2) is rotatably equipped with anti-detachment baffles (9) at both ends along the length direction of the threaded rod (13). On the side of the two anti-detachment baffles (9) that are far apart from each other, there is a limiting block (10) that is fixed to the support plate (2). When the anti-detachment baffle (9) is rotated to the state of contact with the limiting block (10), the anti-detachment baffle (9) is at 90° with the support plate (2).

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