Cutting part cantilever and heading machine

Abstract

The utility model relates to the technical field of tunneling construction equipment, in particular to a cutting part cantilever and a tunneling machine. According to the cutting part cantilever, a mounting cavity and a water supply channel communicated with the mounting cavity are formed in a cutting head shaft; the cantilever section cylinder is arranged on the circumferential side wall of the cutting head shaft in a sleeving manner, and a water inlet channel communicated with the mounting cavity is formed in the cylinder wall of the cantilever section cylinder; the water pumping assembly is arranged in the mounting cavity and comprises a plurality of water pumps arranged in the axial direction of the cutting head shaft, and the water pumps convey water in the water inlet channel into the water supply channel. According to the utility model, the plurality of water pumps are arranged at intervals along the axial direction of the cutting head shaft, so that the water yield is increased under the condition that the radial sizes of the cutting head shaft and the cantilever section sleeve are not changed, the requirement of full spraying of internal spraying is met, and each cutting tooth position has a spraying function, so that the spraying dust suppression effect is improved, and the use requirement under severe working conditions is met.

Description

Technical Field

[0001] The utility model relates to the technical field of tunneling construction equipment, in particular to a cutting part cantilever and a roadheader. Background Art

[0002] A roadheader is a combined unit that can realize cutting, loading and transportation, self-propelling and spray dust removal. When the cutting head of the roadheader cuts, the dust is relatively large. At present, the method of spraying water mist is adopted to achieve dust reduction. Specifically, a water pump is configured in the cantilever section. Due to the limitation of the radial dimension, the displacement of the water pump is limited and cannot meet the water volume requirement of full-spray internal spray during cutting, that is, each cutting tooth on the cutting head corresponds to a nozzle, and only the water volume requirement of a semi-spray cutting head can be met, that is, only some of the cutting tooth positions have the spray function, which affects the spray dust removal effect. Content of the Utility Model

[0003] In view of this, the purpose of this application is to provide a cutting part cantilever and a roadheader to solve the problem that the displacement of the water pump configured in the cantilever section of the existing roadheader cannot meet the requirement that each cutting tooth position on the cutting head has a spray function, which affects the spray dust removal effect.

[0004] The first aspect of the utility model provides a cutting part cantilever, wherein the cutting part cantilever includes:

[0005] A cutting head shaft, with an installation cavity formed inside and a water supply channel communicating with the installation cavity;

[0006] A cantilever section cylinder body, sleeved on the circumferential side wall of the cutting head shaft, and a water inlet channel communicating with the installation cavity is opened in the cylinder wall of the cantilever section cylinder body;

[0007] A water pumping assembly, arranged in the installation cavity, and the water pumping assembly includes a plurality of water pumps arranged axially along the cutting head shaft, and the plurality of water pumps transport the water in the water inlet channel to the water supply channel.

[0008] Preferably, the plurality of water pumps are connected in series.

[0009] Preferably, both ends of the water inlet channel are provided with a water inlet and a water outlet; the water inlet is arranged on the outer wall of the cantilever section cylinder body; the water outlet is communicated with the inner wall of the cantilever section cylinder body and is arranged corresponding to each water pump.

[0010] Preferably, the installation cavity is formed into a groove-like structure with an opening at one end, and the cutting part cantilever further includes:

[0011] A cover, installed at the opening to block the installation cavity, and a first communication pipe communicating the installation cavity and the water supply channel is arranged inside the cover.

[0012] Preferably, an oil inlet channel and an oil return channel connected to the water pump assembly are provided in the cylinder wall of the cantilever section cylinder body.

[0013] Preferably, the oil inlet channels are arranged in one-to-one correspondence with the water pumps.

[0014] Preferably, one end of the oil inlet channel forms an oil inlet, and one end of the oil return channel forms an oil return port. Both the oil inlet and the oil return port are arranged on the outer wall of the cantilever section cylinder body.

[0015] Preferably, it further includes:

[0016] A sealing sleeve, clamped between the inner wall of the cantilever section cylinder body and the outer wall of the cutting head shaft. A second communication pipe communicating with the water inlet channel is provided on the sealing sleeve.

[0017] Preferably, a third communication pipe communicating the installation cavity and the second communication pipe is provided on the cutting head shaft.

[0018] The second aspect of the present invention provides a roadheader, including the cutting part cantilever according to any one of the above technical solutions.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The cutting part cantilever of the present invention has a reasonable layout and ingenious design. By utilizing the internal space of the cutting head shaft, the water pump assembly is arranged in the installation cavity, and multiple water pumps are arranged axially along the cutting head shaft, so that multiple water pumps can jointly transport the water in the water inlet channel to the water supply channel. In this way, without changing the radial dimensions of the cutting head shaft and the cantilever section sleeve, the water output is increased to meet the demand of full spraying of internal spraying, that is, each cutting tooth position on the roadheader has a spraying function, so as to improve the spraying and dust suppression effect and meet the use requirements under harsh working conditions.

[0021] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a structural sectional view of the cutting part cantilever provided by the embodiment of the present invention;

[0024] Figure 2 The structural schematic diagram of the cutting part cantilever provided for the embodiment of the present utility model.

[0025] Icon: 10 - cutting head shaft; 11 - installation cavity; 100 - water supply channel; 101 - third communication pipe; 20 - cantilever section cylinder; 210 - water inlet channel; 211 - water inlet; 212 - water outlet; 220 - oil inlet channel; 221 - oil inlet; 230 - oil return channel; 231 - oil return port; 40 - water pump; 50 - cover; 51 - first communication pipe; 60 - sealing sleeve; 61 - second communication pipe; 70 - bearing; 81 - floating seal; 82 - floating seal seat; 83 - floating seal frame. Detailed implementation manners

[0026] The following detailed implementation manners are provided to help readers obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

[0027] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0028] Throughout the specification, when an element (such as, a layer, a region, or a substrate) is described as "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, or there may be one or more other elements therebetween. In contrast, when an element is described as "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there may be no other elements therebetween.

[0029] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0030] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or sections, these components, elements, regions, layers, or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or section from another. Thus, the first component, element, region, layer, or section referred to in the examples described herein may also be referred to as the second component, element, region, layer, or section without departing from the teachings of the examples.

[0031] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientation of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0032] The terms used herein are for the purpose of describing various examples only and are not intended to limit the disclosure. Unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. The terms "comprises", "comprising", and "having" list the stated features, quantities, operations, components, elements, and / or combinations thereof that exist, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0033] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the figures may occur. Thus, the examples described herein are not limited to the specific shapes shown in the figures, but include changes in shape that occur during manufacturing.

[0034] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have a variety of configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0035] According to a first aspect of the present utility model, a cutting part cantilever is provided, which includes a cutting head shaft 10, a cantilever section cylinder 20, and a water pumping assembly.

[0036] In the following, the specific structures of the above components of the cutting part cantilever according to this embodiment will be described.

[0037] In this embodiment, as Figure 1 and Figure 2 shown, the cutting head shaft 10 is a shaft structure. An installation cavity 11 and a water supply channel 100 communicating with the installation cavity 11 are formed inside the cutting head shaft 10. Part of the water supply channel 100 is arranged on the side of the installation cavity 11 in the radial direction. The cantilever section cylinder 20 is formed into a cylindrical structure. The cantilever section cylinder 20 is sleeved on the circumferential side wall of the cutting head shaft 10. The axis of the cantilever section cylinder 20 is collinear with the axis of the cutting head shaft 10. One end of the cantilever section cylinder 20 in the axial direction is connected to the cutting head shaft 10, and the other end of the cantilever section cylinder 20 in the axial direction is connected to the cutting speed reducer. A bearing 70 is arranged between the inner wall of the cantilever section cylinder 20 and the outer wall of the cutting head shaft 10. Preferably, a plurality of bearings 70 are arranged at intervals along the axial direction of the cutting head shaft 10 to play a bearing role.

[0038] As Figure 1 shown, a water inlet channel 210 communicating with the installation cavity 11 is opened in the cylinder wall of the cantilever section cylinder 20. The water inlet channel 210 is generally formed into a tubular structure extending along the axial direction of the cantilever section cylinder 20; the water pumping assembly is arranged in the installation cavity 11, that is, the water pumping assembly is fixed inside the cutting head shaft 10, thus saving the assembly space. Specifically, the water pumping assembly includes a plurality of water pumps 40 arranged along the axial direction of the cutting head shaft 10. The plurality of water pumps 40 transport the water in the water inlet channel 210 to the water supply channel 100. In this way, the water output is increased without changing the radial dimensions of the cutting head shaft 10 and the cantilever sleeve, meeting the requirement of full spraying of the internal spray, that is, enabling each cutting tooth position on the cutting part to have a spraying function, so as to improve the spraying dust suppression effect and meet the use requirements under harsh working conditions.

[0039] In this embodiment, as Figure 1 shown, the plurality of water pumps 40 are arranged at intervals along the axial direction of the cutting head shaft 10 in the installation cavity 11. The number of the water pumps 40 can be two or more.

[0040] In this embodiment, the plurality of water pumps 40 are connected in series to increase the pumping pressure of the water, so that the water entering the water supply channel 100 is high-pressure water, in order to improve the spraying dust removal effect.

[0041] Furthermore, in this embodiment, as Figure 1 and Figure 2As shown, water inlets 211 and outlets 212 are provided at both ends of the water inlet passage 210; the water inlet 211 is provided on the outer wall of the cantilever section cylinder body 20, so as to facilitate connection to a water supply system provided outside the cantilever section cylinder body 20, such as a water storage tank; the outlet 212 communicates with the inner wall of the cantilever section cylinder body 20, and the outlets 212 are provided in one-to-one correspondence with the water pumps 40, so that the water passing through the water inlet passage 210 can enter all the water pumps 40 simultaneously.

[0042] In this embodiment, as Figure 1 shown, the installation cavity 11 is formed as a groove-like structure with an opening at one end, and the opening is provided at one end in the axial direction of the cutting head shaft 10. The cutting part cantilever further includes a cover 50. The cover 50 can be a block structure or a cover structure. The cover 50 is installed at the opening to block the installation cavity 11, so as to limit the pump water assembly in the installation cavity 11. The assembly method of the cover 50 and the installation cavity 11 can be interference fit connection, or threaded connection, or snap ring limit can also be used. Further, as Figure 1 shown, a first communication pipe 51 communicating the installation cavity 11 and the water supply channel 100 is provided in the cover 50, so that the water pumped by the water pump 40 is conveyed to the water supply channel 100 through the first communication pipe 51, so as to realize the conveyance of high-pressure water while satisfying the blocking of the installation cavity 11.

[0043] As Figure 1 and Figure 2 shown, in this embodiment, the water pump 40 uses oil to drive to perform work on pressurizing water. An oil inlet passage 220 and an oil return passage 230 connected to the pump water assembly are opened in the cylinder wall of the cantilever section cylinder body 20. The oil enters the water pump 40 through the oil inlet passage 220 and then flows out through the oil return passage 230.

[0044] Further, in this embodiment, as Figure 1 shown, the oil inlet passages 220 are provided in one-to-one correspondence with the water pumps 40, so as to realize the drive of each water pump 40. Preferably, all the water pumps 40 share a common oil return passage 230, so as to avoid opening too many flow channel structures on the cantilever section cylinder body 20 while meeting the oil return requirement, and reduce the processing difficulty of the cantilever section cylinder body 20.

[0045] Even further, as Figure 2 shown, one end of the oil inlet passage 220 is formed as an oil inlet 221, and one end of the oil return passage 230 is formed as an oil return port 231. The oil inlet 221 and the oil return port 231 are both provided on the outer wall of the cantilever section cylinder body 20, and the oil inlet 221 and the oil return port 231 are directly connected to the hydraulic system of the roadheader.

[0046] In this embodiment, as Figure 1As shown, the cutting part cantilever further includes a sealing sleeve 60. The sealing sleeve 60 is formed into an annular structure and is clamped between the inner wall of the cantilever section cylinder body 20 and the outer wall of the cutting head shaft 10 to prevent water from leaking when entering the installation cavity 11 through the water inlet channel 210. Specifically, a second communication pipe 61 communicating with the water inlet channel 210 is provided on the sealing sleeve 60. Part of the second communication pipe 61 extends radially along the cutting head shaft 10 to connect with the water inlet 211 as described above, and the remaining part of the second communication pipe 61 is formed into an annular structure surrounding the cutting head shaft 10 to connect with a third communication pipe 101 as described below. The sealing sleeves 60 are provided in one-to-one correspondence with the water pumps 40, and multiple sealing sleeves 60 are arranged axially along the cutting head shaft 10.

[0047] Further, as Figure 1 shown, a third communication pipe 101 communicating the installation cavity 11 and the second communication pipe 61 is provided at a position on the cutting head shaft 10 outside the installation cavity 11 in the radial direction. Thus, the water entering the water inlet channel 210 through the water inlet 211 flows into the second communication pipe 61 from the water outlet 212, and then flows to the installation cavity 11 through the third communication pipe 101. Under the combined action of multiple water pumps 40, it leads to the water supply channel 100 through the first communication pipe 51 in the cover 50 to complete the conveyance of water.

[0048] It should be noted that when the water pump 40 in this application is driven by oil, channels for oil to flow through can be provided on the sealing sleeve 60 and the cutting head shaft 10. The channels for oil to flow through can have the same structure as the second communication pipe 61 and the third communication pipe 101 to prevent oil leakage during the process of conveying oil.

[0049] In addition, in this embodiment, as Figure 1 shown, the cutting head shaft 10 and the cantilever section cylinder body 20 can be connected via a floating seal assembly. The seal assembly includes a floating seal frame 83, a floating seal seat 82, and a floating seal 81. The floating seal 81 is a sealing ring with an O-shaped structure. The floating seal frame 83 and the floating seal seat 82 are sleeved on the outer circumferential wall of the cutting head shaft 10. The floating seal seat 82 is fixed at one end of the cantilever section cylinder body 20 in the axial direction. The floating seal 81 is assembled in the space surrounded by the floating seal seat 82 and the floating seal 81. The floating seal assembly is a structure in the existing cutting part cantilever and is a common seal structure in the field. The sealing principle thereof will not be elaborated here.

[0050] According to the cutting part cantilever of the present utility model, the layout is reasonable and the design is ingenious. By utilizing the internal space of the cutting head shaft, the water pump assembly is arranged in the installation cavity, and multiple water pumps are arranged axially along the cutting head shaft, enabling multiple water pumps to jointly transport the water in the water inlet channel to the water supply channel. In this way, without changing the radial dimensions of the cutting head shaft and the cantilever section sleeve, the water output is increased to meet the requirement of full spraying of the internal spray, that is, enabling each pick position to have a spraying function, so as to enhance the spray dust suppression effect and meet the use requirements under harsh working conditions.

[0051] The second aspect of the present utility model provides a roadheader, which includes the cutting part cantilever as described above. The roadheader can also be a roadheader-anchor-loader. Multiple water pumps arranged axially are provided in the cutting part cantilever to increase the water output without changing the size of the roadheader, enhance the spray dust suppression effect, and meet the use requirements of the roadheader under harsh working conditions.

[0052] Finally, it should be noted that the above-described embodiments are only specific embodiments of the present application, used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cutting part cantilever, characterized in that: The cutting part cantilever comprises: A cutting head shaft, internally formed with a mounting cavity and a water supply channel communicating with the mounting cavity; A cantilever section cylinder is sleeved on the circumferential side wall of the cutting head shaft, and a water inlet channel communicating with the installation cavity is opened in the cylinder wall of the cantilever section cylinder; A water pump assembly is arranged in the installation cavity, and the water pump assembly includes a plurality of water pumps arranged along the axial direction of the cutting head shaft, and the plurality of water pumps transport the water in the water inlet channel to the water supply channel.

2. The cutting part cantilever according to claim 1, characterized in that: A plurality of the water pumps are connected in series.

3. The cutting part cantilever according to claim 1, characterized in that: A water inlet and a water outlet are provided at both ends of the water inlet channel; the water inlet is provided on the outer wall of the cantilever section cylinder; the water outlet is communicated with the inner wall of the cantilever section cylinder and is provided one-to-one with the water pump.

4. The cutting portion cantilever according to claim 1, characterized in that: The mounting cavity is formed as a slot-shaped structure with an opening at one end, and the cutting portion cantilever further includes: A sealing cover is installed on the opening to block the installation cavity, and a first connecting pipe connecting the installation cavity and the water supply channel is arranged in the sealing cover.

5. The cutting part cantilever according to claim 1, characterized in that: An oil inlet channel and an oil return channel connected to the water pump assembly are provided in the cylinder wall of the cantilever section cylinder.

6. The cutting portion cantilever according to claim 5, characterized in that: The oil inlet channels are arranged in one-to-one correspondence with the water pumps.

7. The cutting portion cantilever according to claim 5, characterized in that: One end of the oil inlet passage is formed as an oil inlet port, and one end of the oil return passage is formed as an oil return port. Both the oil inlet port and the oil return port are arranged on the outer wall of the cantilever section cylinder.

8. The cutting part cantilever according to claim 1, characterized in that: Also includes: The sealing sleeve is sandwiched between the inner wall of the cantilever section cylinder and the outer wall of the cutting head shaft, and the sealing sleeve is provided with a second connecting pipe connected to the water inlet channel.

9. The cutting portion cantilever according to claim 8, characterized in that: The cutting head shaft is provided with a third communicating pipe communicating with the installation cavity and the second communicating pipe.

10. A tunnel boring machine, characterized in that: The invention comprises the cutting portion cantilever as described in any one of claims 1 to 9.

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