Rock mine saw for hard rock stratum subway station foundation pit excavation

Abstract

The utility model discloses a rock mine saw for excavating a foundation pit of a subway station in a hard rock stratum. A disk saw relates to the technical field of mining equipment and comprises a disk saw and a holding assembly, a water supply system is arranged on a base of the disk saw, the holding assembly comprises a shell, a water cutter head is arranged on the shell, and the water cutter head is communicated with the water supply system through a water conveying pipe; the water jet cutter head is also communicated with a sand storage box; the water jet cutter device, the rock drilling drill and the circular saw for the miner are combined, the hard rock stratum can be cut through one device, a large amount of time for manually digging the horizontal rock stratum is saved, the labor cost of construction is reduced, and the construction period is shortened.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and in particular to a rock mining saw for excavating subway station foundation pits in hard rock strata. Background Technology

[0002] During the excavation of subway station foundation pits, the traditional construction method involves using excavators for digging, and when encountering large rocks, excavators with hammers are used for crushing. However, in some construction areas, the strata are hard rock, making traditional methods difficult. Therefore, workers have attempted to cut the rock into cubic blocks, which are then transported using bulldozers and cranes. This method yields relatively intact rock blocks with some potential for reuse. In actual construction, when cutting perpendicular to the rock strata, a mining double-blade circular saw is generally used, which is convenient, efficient, and produces a relatively clean cut. However, when cutting horizontally, manual labor is usually required. Workers either chisel the rock or first drill a row of holes horizontally and then use a handheld chainsaw to cut it. This method is not only labor-intensive and time-consuming, but also produces uneven cuts, affecting reuse. Therefore, designing a mining saw that reduces labor and time costs and can smoothly cut horizontal rock strata is particularly important. Utility Model Content

[0003] In order to reduce labor and time costs and to level the horizontal plane of rock strata, this application provides a rock mining saw for excavating subway station foundation pits in hard rock strata.

[0004] This application provides a rock mining saw for excavating subway station foundation pits in hard rock strata, employing the following technical solution:

[0005] A rock mining saw for excavating subway station foundation pits in hard rock formations includes a circular saw and a holding assembly. The base of the circular saw is equipped with a water supply system. The holding assembly includes a housing with a water jet head on it. The water jet head and the water supply system are connected through a water pipe. The water jet head is also connected to a sand storage box.

[0006] Optionally, the gripping assembly further includes a drill rod that passes through the housing. The housing also includes an impact assembly for driving the drill rod to slide along the length of the housing to impact the rock, and a rotation assembly for driving the drill rod to rotate.

[0007] Optionally, the impact assembly includes a piston, which is fixedly disposed in the housing, and the telescopic end of the piston is rotatably connected to the chisel, with the rotation axis arranged along the length of the chisel.

[0008] Optionally, the rotating assembly includes a hydraulic motor, which is fixedly installed in the housing. The output shaft of the hydraulic motor is provided with a first gear, and a second gear is coaxially sleeved on the chisel. The two gears on the chisel mesh with each other, and the thickness of the gear on the chisel is greater than the travel stroke of the chisel.

[0009] Optionally, the water jet head includes an inlet pipe and an outlet pipe, which are connected by a connecting block; the sand storage box is connected to the outlet pipe through a sand and gravel siphon pipe.

[0010] Optionally, the water supply system includes a water tank and a booster pump. The water tank is fixedly mounted on the base of the circular saw, and the water tank is connected to the booster pump and the water cutter head in sequence through a water supply pipe.

[0011] In summary, this application has the following beneficial technical effects:

[0012] 1. By combining a water jet device, rock drill, and miner's circular saw, a single device can be used to cut hard rock strata, saving a significant amount of time spent manually excavating horizontal rock layers, reducing labor costs, and shortening the construction period.

[0013] 2. Horizontal cutting uses a combination of water jet and rock drill, resulting in a smoother cutting surface. The recovered rock blocks are well-shaped and of higher quality, and the wear and tear on construction tools is reduced. This not only creates more economic value but also aligns with the current green and environmentally friendly construction concept. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of a rock mining saw used for excavating subway station foundation pits in hard rock formations according to this application (grip components omitted);

[0015] Figure 2 This is a cross-sectional view of the overall structure of the gripping component in a rock mining saw used for excavation of subway station foundation pits in hard rock formations, as described in this application.

[0016] Figure 3 hour Figure 2 Overall structural diagram of the water cutter head;

[0017] Figure 4 This is a cross-sectional view of the overall structure of the water supply system in this application.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Circular saw; 11. Base; 12. Saw blade; 2. Grip assembly; 21. Housing; 211. Handle; 22. Water jet head; 221. Inlet pipe; 222. Outlet pipe; 223. Connecting block; 23. Sand storage box; 24. Siphon pipe; 25. Chisel rod; 26. Piston; 27. Hydraulic motor; 3. Water supply system; 31. Water tank; 32. Booster pump; 33. Water delivery pipe. Detailed Implementation

[0020] The following is combined with Figure 1-4 This application is described in further detail.

[0021] This application discloses a rock mining saw for excavating subway station foundation pits in hard rock formations. The mining saw is based on the original circular saw 1 and is equipped with a water jet and a rock drill rod 25 that can be manually held. It includes a circular saw 1 and a holding component 2. The circular saw 1 is a common circular saw 1 on the market. The circular saw 1 includes a base 11 and a saw blade 12. The saw blade 12 can move vertically under the action of the lifting component, thereby completing the vertical cutting of the rock. The holding component 2 has the functions of a water jet and a rock drill rod 25. After completing the vertical cutting, the horizontal cutting is completed by the holding component 2, thereby completing the cutting more smoothly and faster.

[0022] A water supply system 3 is provided on the base 11 of the circular saw 1. The grip assembly 2 includes a housing 21, and a handle 211 is provided at the tail end of the housing 21. The water supply system 3 is connected to a water cutter head 22. The water supply system 3 includes a water tank 31 and a booster pump 32. The water tank 31 is connected to the booster pump 32 and the water cutter head 22 in sequence through a water supply pipe 33. The water cutter head 22 includes an inlet pipe 221 and an outlet pipe 222. The inlet pipe 221 and the outlet pipe 222 are connected by a connecting block 223. The connecting block 223 is integrally set with the inlet pipe 221. One end of the connecting block 223 is inserted into the outlet pipe 222 and is interference-fitted, thereby connecting the inlet pipe 221 and the outlet pipe 222 together.

[0023] A sand storage box 23 is also fixedly installed on the outer shell 21. The sand storage box 23 stores fine sand and gravel to enhance the cutting ability of the water jet. The sand storage box 23 is connected to the water outlet pipe 222 through the siphon pipe 24. When the high-pressure water jet is ejected from the water outlet pipe 222, the sand and gravel in the sand storage box 23 are sucked into the high-pressure water jet through the siphon effect.

[0024] To accelerate the cutting speed, the gripping assembly 2 also includes a drill rod 25, which is inserted into the housing 21 and can slide and rotate along its length. The housing 21 contains a piston 26 for driving the drill rod 25 to slide along its length and impact the rock. The piston 26 is fixedly mounted in the housing 21, and its telescopic end is rotatably connected to the drill rod 25, with the rotation axis along the length of the drill rod 25. The housing 21 also contains a hydraulic motor 27 for driving the drill rod 25 to rotate. The body of the hydraulic motor 27 is fixedly mounted in the housing 21, and a gear is mounted on the output shaft of the hydraulic motor 27. A gear is also coaxially fixedly connected to the drill rod 25, and the two gears mesh with each other. Considering the forward and backward movement of the drill rod 25, the thickness of the gear on the drill rod 25 is greater than the stroke of the drill rod 25 to ensure that the two gears always remain meshed. It should be noted that the stroke of the drill rod 25 is relatively short, mainly providing a short and rapid impact force. The required drilling depth is mainly achieved by manually pushing the gripping assembly 2 forward.

[0025] In use, the circular saw 1 is used to cut the rock vertically first. Then, the manual hand-held component 2 is used to cut the rock horizontally using the chisel 25. It should be noted that during operation, the line connecting the chisel 25 and the water jet head 22 is horizontal. The chisel 25 first drills a hole in the rock. When the chisel 25 drills into the next hole, the water jet cuts the rock between the two holes. By adding a hand-held water jet and rock drill to the rock drill, the horizontal mining of the rock is accelerated.

[0026] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rock mining saw for excavating subway station foundation pits in hard rock strata, characterized in that: The device includes a circular saw and a holding assembly. The circular saw has a water supply system on its base. The holding assembly includes a housing with a water jet head on it. The water jet head and the water supply system are connected via a water pipe. The water jet head is also connected to a sand storage box.

2. A rock mining saw for excavating subway station foundation pits in hard rock strata according to claim 1, characterized in that: The gripping assembly also includes a drill rod that passes through the housing. The housing also includes an impact assembly for driving the drill rod to slide along its length to impact the rock, and a rotation assembly for driving the drill rod to rotate.

3. A rock mining saw for excavating subway station foundation pits in hard rock strata according to claim 2, characterized in that: The impact assembly includes a piston, which is fixedly installed in the housing. The telescopic end of the piston is rotatably connected to the chisel, and the axis of rotation is set along the length of the chisel.

4. A rock mining saw for excavating subway station foundation pits in hard rock strata according to claim 3, characterized in that: The rotating assembly includes a hydraulic motor, which is fixedly installed in the housing. A first gear is provided on the output shaft of the hydraulic motor, and a second gear is coaxially sleeved on the chisel. The two gears on the chisel mesh with each other, and the thickness of the gears on the chisel is greater than the travel stroke of the chisel.

5. A rock mining saw for excavating subway station foundation pits in hard rock strata according to claim 1, characterized in that: The water jet head includes an inlet pipe and an outlet pipe, which are connected by a connecting block; the sand storage box is connected to the outlet pipe through a sand and gravel siphon pipe.

6. A rock mining saw for excavating subway station foundation pits in hard rock strata according to claim 1, characterized in that: The water supply system includes a water tank and a booster pump. The water tank is fixedly installed on the base of the circular saw, and the water tank is connected to the booster pump and the water cutter head in sequence through a water supply pipe.

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