Double-wheel mill for tunnel engineering

Abstract

The utility model relates to the technical field of tunnel engineering, and discloses a double-wheel mill for tunnel engineering, which comprises a connecting piece, wheel mills are rotatably connected to the bottom of the connecting piece, a bottom plate is fixedly connected to the bottom of the connecting piece, a cleaning assembly is arranged in the bottom plate, and a protection assembly is arranged in the bottom plate. The cleaning assembly comprises a fixing frame, the outer wall of the fixing frame is fixedly connected to the interior of the bottom plate, a spraying opening is formed in the bottom plate, a guide pipe is rotationally connected to the interior of the fixing frame, a swing plate is fixedly connected to the outer wall of the guide pipe, a fixing column is fixedly connected to the outer wall of the swing plate, and a spraying head is fixedly connected to the outer wall of the guide pipe. According to the wheel mill surface cleaning device, the motor drives the rotary disc and the swing plate and is matched with the connecting column to swing the spray head, so that swing spraying is carried out on the wheel mill surface, the surface is cleaned evenly, the problems that the linear cleaning range is small and cleaning is not thorough when the wheel mill surface is cleaned in the prior art are solved, and the cleaning quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel engineering technical field especially relates to a kind of double-wheel mills for tunnel engineering. BACKGROUND

[0002] In tunnel engineering construction, double-wheel mill is an important construction equipment, especially when facing rock formation plays a key role.For the different hardness of rock formation, construction strategy also has some differences, when encountering rock formation is not hard, can directly use grab operation, and when grab cannot be moved, then need to use double-wheel mill to break rock formation.Double-wheel mill in the working process, its mill surface will be attached with a large amount of soil, rock debris and other impurities, these impurities if not cleaned in time, will affect the working performance and service life of double-wheel mill, therefore, cleaning work of double-wheel mill is very important and extremely challenging.

[0003] The existing double-wheel mill cleaning device usually adopts relatively simple fixed nozzle structure.The principle is to connect external water source or cleaning liquid source, so that liquid is sprayed from nozzle, directly washes double-wheel mill surface to achieve cleaning purpose.This fixed nozzle is often fixed in position and single in spraying direction, in actual operation, mainly rely on the rotation of double-wheel mill or the limited translation of nozzle device to expand cleaning range.For example, some cleaning devices are provided with a fixed crossbeam above double-wheel mill, several nozzles are installed on the crossbeam, and the nozzles can only vertically downward spray water, when cleaning, only the part of double-wheel mill directly below can be washed, if larger area is to be covered, long-time rotation of double-wheel mill or slow movement of entire cleaning device is needed.

[0004] However, this traditional cleaning method has obvious defects.As the linear cleaning range of nozzle is limited, when double-wheel mill is cleaned, it is difficult to fully and evenly cover the entire mill surface.Especially for the complex shape and larger area of double-wheel mill, fixed nozzle can only concentrate on washing in local area, and for some edges, corners or recessed parts, cleaning effect is greatly discounted, leading to incomplete cleaning, and residual impurities still have adverse effects on the normal operation of double-wheel mill, reduce the quality and efficiency of cleaning work, cannot meet the efficient and accurate cleaning demand of double-wheel mill in tunnel engineering, and therefore a double-wheel mill for tunnel engineering is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a double-wheel mill for tunnel engineering, aiming at improving the problem of small linear cleaning range and incomplete cleaning when cleaning in prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A double wheel mill for tunnel engineering, comprising a connecting piece, a wheel mill is rotatably connected to the bottom of the connecting piece, a bottom plate is fixedly connected to the bottom of the connecting piece, a cleaning assembly is arranged in the inside of the bottom plate, and a protection assembly is arranged in the inside of the bottom plate;

[0008] The cleaning assembly comprises a fixing frame, the outer wall of the fixing frame is fixedly connected to the inside of the bottom plate, a spraying opening is formed in the inside of the bottom plate, a guide pipe is rotatably connected to the inside of the fixing frame, an oscillating plate is fixedly connected to the outer wall of the guide pipe, a fixing column is fixedly connected to the outer wall of the oscillating plate, a spray head is fixedly connected to the outer wall of the guide pipe, a motor is fixedly connected to the top of the fixing frame, a rotating disc is fixedly connected to the output end of the motor, a connecting column is slidably connected to the inside of the rotating disc, a connecting block is fixedly connected to the bottom of the connecting column, and the connecting block is slidably connected to the outer wall of the fixing column in the inside thereof;

[0009] As a further description of the above technical solution:

[0010] The protection assembly comprises a protection plate, and the outer wall of the protection plate is arranged on the outer wall of the bottom plate;

[0011] As a further description of the above technical solution:

[0012] A limiting groove is formed in the inside of the protection plate, and a clamping groove is formed in the inside of the protection plate;

[0013] As a further description of the above technical solution:

[0014] A fixing block is fixedly connected to the outer wall of the bottom plate, and the outer wall of the limiting groove is slidably connected to the outer wall of the fixing block;

[0015] As a further description of the above technical solution:

[0016] A sliding column is slidably connected to the inside of the bottom plate, and a fixing disc is fixedly connected to the outer wall of the sliding column;

[0017] As a further description of the above technical solution:

[0018] A spring is sleeved on the outer wall of the sliding column, one end of the spring is fixedly connected to the inner wall of the bottom plate, and the other end of the spring is fixedly connected to the outer wall of the fixing disc;

[0019] As a further description of the above technical solution:

[0020] The outer wall of the sliding column is fixedly connected to a limiting disc, one end of the sliding column is fixedly connected to a clamping ball, and the outer wall of the clamping ball is slidably connected to the inside of the clamping groove.

[0021] The utility model has the advantages of:

[0022] 1. In the utility model, the guide pipe realizes its swing function through the starting motor, when the starting motor is started, the motor drives the rotating disc and the swing board and cooperates with the connecting column, realizes the swing of the spray head, thereby the wheel mill surface is sprayed swing, makes the surface clean more evenly, solves the problem that the linear cleaning range is small and the cleaning is not thorough when the existing one is cleaned, improves the cleaning quality.

[0023] 2. In the utility model, the protection plate realizes its lifting function through being pushed, when being pushed, the protection plate drives the clamping groove and the clamping ball and cooperates with the spring, realizes the sliding of the slide column in the bottom plate, thereby the spray head is protected during construction, prevents the soil from entering its inside, solves the problem that the cut soil is easy to enter the inner wall of the spray head and cause blockage when the device constructs, improves the internal tidiness. DRAWINGS

[0024] Figure 1 A three-dimensional schematic view of a double wheel mill for tunnel engineering is proposed for the utility model;

[0025] Figure 2 A structure schematic view of a fixing frame of a double wheel mill for tunnel engineering is proposed for the utility model;

[0026] Figure 3 A structure schematic view of a spray head of a double wheel mill for tunnel engineering is proposed for the utility model;

[0027] Figure 4 A Figure 2 Enlarged view of A in the utility model.

[0028] Legend:

[0029] 1, connecting piece;2, bottom plate;3, wheel mill;4, protection plate;5, fixing frame;6, spray opening;7, fixed block;8, limiting groove;9, spray head;10, guide pipe;11, connecting column;12, motor;13, rotating disc;14, connecting block;15, fixed column;16, swing board;17, clamping groove;18, clamping ball;19, fixed disc;20, spring;21, limiting disc;22, slide column. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Refer to Figure 1 - Figure 3The utility model provides an embodiment: a double-wheel milling machine for tunnel engineering, including a connecting member 1, which is usually cast from high-strength alloy steel and has excellent rigidity and toughness. The bottom is rotatably connected to the milling wheel 3 through a precise bearing structure, ensuring that the milling wheel 3 can flexibly rotate during operation to meet the milling requirements of different angles. The bottom of the connecting member 1 is rotatably connected to the milling wheel 3, and the bottom of the connecting member 1 is fixedly connected to a bottom plate 2. The bottom plate 2 is made of high-quality wear-resistant steel plate, which can effectively resist various impacts and wear during the construction process. A cleaning component is provided inside the bottom plate 2, and a protective component is provided inside the bottom plate 2.

[0032] The cleaning component includes a fixed frame 5, the outer wall of the fixed frame 5 is fixedly connected to the inside of the base plate 2, and a spray port 6 is opened inside the base plate 2. The spray port 6 has been finely processed and polished, and the edge is smooth and free of burrs to ensure smooth outflow of the liquid. The fixed frame 5 is rotatably connected to a conduit 10, the outer wall of the conduit 10 is fixedly connected to a swing plate 16, the outer wall of the swing plate 16 is fixedly connected to a fixed column 15, and the outer wall of the conduit 10 is fixedly connected to a nozzle 9. The nozzle 9 adopts a professional high-pressure nozzle 9, and its internal structure is cleverly designed, which can make the liquid form a uniform and fine spray to enhance the cleaning effect. The top of the fixed frame 5 is fixedly connected to a motor 12, and the output end of the motor 12 is fixedly connected to a turntable 13. The turntable 13 is slidably connected to a connecting column 11 inside, and a connecting block 14 is fixedly connected to the bottom of the connecting column 11. The connecting block 14 is slidably connected to the outer wall of the fixed column 15.

[0033] Specifically, during tunnel construction, different excavation strategies are required for different geological conditions. When excavating the ground, the first step is to use a grab bucket. The grab bucket, with its powerful gripping ability, can efficiently handle ordinary soil layers. As the excavation depth increases, when encountering rock strata and the hardness of the top rock strata is not high, the grab bucket is still preferred for grabbing operation. This can give full play to the advantages of the grab bucket in relatively soft rock strata operations and improve construction efficiency. Once the grab bucket cannot effectively grab the rock strata, the double-wheel milling machine 3 is started to break the rock strata. After the excavation work is completed, in order to ensure the normal operation of the double-wheel milling machine 3, the cleaning link is crucial. Start the motor 12, the motor 12 starts to run and drives the turntable 13 to rotate. The rotation of the turntable 13 causes the connecting column 11 to slide inside it. The connecting column 11 further drives the bottom connecting block 14 to slide on the outer wall of the fixed column 15, and finally drives the swing plate 16 to swing, thereby realizing the swing of the guide tube 10, causing the nozzle 9 to swing accordingly, and performing comprehensive and uniform swing cleaning on the surface of the wheel milling machine 3, effectively removing impurities such as soil and rock chips on the surface of the wheel milling machine 3, keeping its surface clean, and providing strong guarantee for the long-term stable operation of the double-wheel milling machine 3.

[0034] Reference Figure 1 and Figure 4The protection assembly comprises a protection plate 4 made of high-strength engineering plastic material. The material has good toughness to withstand a certain degree of impact and light weight, facilitating operation and installation. The outer wall of the protection plate 4 is arranged on the outer wall of the bottom plate 2. A limiting groove 8 is formed in the protection plate 4. A clamping groove 17 is formed in the protection plate 4. The outer wall of the bottom plate 2 is fixedly connected with a fixed block 7 made of stainless steel, which has excellent corrosion resistance. The shape of the fixed block 7 is a cuboid. The side surface in contact with the protection plate 4 is polished to reduce the friction coefficient. The outer wall of the limiting groove 8 is slidably connected to the outer wall of the fixed block 7. The bottom plate 2 is slidably connected with a slide column 22 made of hard alloy material, which has extremely high hardness and wear resistance. The outer wall of the slide column 22 is processed with fine external threads for fixing other related parts. The outer wall of the slide column 22 is fixedly connected with a fixed disc 19. The outer wall of the slide column 22 is sleeved with a spring 20. One end of the spring 20 is fixedly connected to the inner wall of the bottom plate 2. The other end of the spring 20 is fixedly connected to the outer wall of the fixed disc 19. The outer wall of the slide column 22 is fixedly connected with a limiting disc 21. One end of the slide column 22 is fixedly connected with a clamping ball 18 made of high-hardness alloy steel material. The surface of the clamping ball 18 is finely polished to make it smooth and round, so as to facilitate smooth sliding and clamping action in the clamping groove 17, thereby realizing effective fixing and locking of the position of the protection plate 4, providing a reliable protective barrier for the nozzle 9 in the non-working state, avoiding impurities such as soil and gravel from entering the inside of the nozzle 9 during construction, and protecting the normal service life and cleaning effect of the nozzle 9. The outer wall of the clamping ball 18 is slidably connected in the clamping groove 17.

[0035] Specifically, when the tunnel engineering continues to advance the excavation process, the nozzle 9 needs to be properly protected to avoid impurities such as soil from entering the inside of the nozzle 9 during construction, causing blockage or damage. At this time, the construction personnel can push the protection plate 4 upwards. In this process, the limiting groove 8 will stably slide along the outer wall of the fixed block 7, thereby effectively limiting the movement track of the protection plate 4 to prevent it from sliding out of the established track. Since the surface of the clamping ball 18 is in a spherical structure, the protection plate 4 will push the clamping ball 18 to slide inward when it moves upwards. The clamping ball 18 in turn drives the fixed disc 19 to slide inside the bottom plate 2. The fixed disc 19 in turn drives the slide column 22 to move together and makes the limiting disc 21 move as well. At the same time, the fixed disc 19 will compress the spring 20. When it moves to the position of the clamping groove 17, the spring 20 will drive the fixed disc 19 to return to the original position by virtue of its elastic rebound, so that the clamping ball 18 can be accurately clamped into the clamping groove 17, thereby realizing the fixation of the position of the protection plate 4 and successfully building an effective protection barrier for the nozzle 9, greatly reducing the risk of soil entering the nozzle 9 during construction and protecting the normal use of the nozzle 9 and the stable operation of the entire cleaning system.

[0036] Working principle: when excavating the land, the grab bucket is used for digging, when the rock layer is encountered and the top is not hard, the grab bucket can be used for grabbing, when it cannot be grabbed, the double-wheel mill 3 is used to remove the rock layer, when the excavation is completed, the motor 12 is started, the rotating disc 13 is driven to rotate by the motor 12, the connecting column 11 is driven to slide in the rotating disc 13, the bottom connecting block 14 is driven to slide on the outer wall of the fixed column 15, the swing plate 16 is driven to swing to drive the guide pipe 10 to swing, the nozzle 9 is driven to swing, the surface of the wheel mill 3 is cleaned, and the surface is kept clean;

[0037] When the excavation continues, the protection plate 4 can be pushed upwards and slide on the outer wall of the fixed block 7 through the limiting groove 8, the protection plate 4 is limited to prevent sliding out, the surface of the clamping ball 18 is spherical, the clamping ball 18 is driven to slide inwards by the protection plate 4, the fixed disc 19 is driven to slide in the bottom plate 2 by the clamping ball 18, the slide column 22 is driven to move by the fixed disc 19, the limiting disc 21 is driven to move, the spring 20 is compressed by the fixed disc 19, the fixed disc 19 is returned to the original position by the spring 20, the clamping ball 18 is clamped in the clamping groove 17, the nozzle 9 is protected to prevent the soil from entering during construction.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A double-wheel milling machine for tunnel engineering, comprising a connecting member (1), characterized in that: The bottom of the connecting member (1) is rotatably connected to a wheel milling machine (3), the bottom of the connecting member (1) is fixedly connected to a bottom plate (2), a cleaning component is provided inside the bottom plate (2), and a protective component is provided inside the bottom plate (2); The cleaning assembly comprises a fixed frame (5), the outer wall of the fixed frame (5) is fixedly connected to the inside of the base plate (2), a spray port (6) is opened inside the base plate (2), a conduit (10) is rotatably connected inside the fixed frame (5), the outer wall of the conduit (10) is fixedly connected to a swing plate (16), the outer wall of the swing plate (16) is fixedly connected to a fixed column (15), the outer wall of the conduit (10) is fixedly connected to a spray head (9), the top of the fixed frame (5) is fixedly connected to a motor (12), the output end of the motor (12) is fixedly connected to a turntable (13), the inside of the turntable (13) is slidably connected to a connecting column (11), the bottom of the connecting column (11) is fixedly connected to a connecting block (14), and the inside of the connecting block (14) is slidably connected to the outer wall of the fixed column (15).

2. The double-wheel milling machine for tunnel engineering according to claim 1, characterized in that: The protection assembly comprises a protection plate (4), the outer wall of the protection plate (4) being arranged on the outer wall of the bottom plate (2).

3. The double-wheel milling machine for tunnel engineering according to claim 2, characterized in that: A limiting groove (8) is provided inside the protective plate (4), and a clamping groove (17) is provided inside the protective plate (4).

4. The double-wheel milling machine for tunnel engineering according to claim 3, characterized in that: The outer wall of the bottom plate (2) is fixedly connected to a fixing block (7), and the outer wall of the limiting groove (8) is slidably connected to the outer wall of the fixing block (7).

5. The double-wheel milling machine for tunnel engineering according to claim 4, characterized in that: The bottom plate (2) is slidably connected to a sliding column (22) inside, and the outer wall of the sliding column (22) is fixedly connected to a fixed disc (19).

6. The double-wheel milling machine for tunnel engineering according to claim 5, characterized in that: A spring (20) is sleeved on the outer wall of the sliding column (22), one end of the spring (20) is fixedly connected to the inner wall of the base plate (2), and the other end of the spring (20) is fixedly connected to the outer wall of the fixed disc (19).

7. The double-wheel milling machine for tunnel engineering according to claim 6, characterized in that: The outer wall of the sliding column (22) is fixedly connected to a limiting disc (21), one end of the sliding column (22) is fixedly connected to a locking ball (18), and the outer wall of the locking ball (18) is slidably connected to the inside of the locking groove (17).

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