Cutter head and tunneling equipment

Abstract

The utility model provides a cutter head and tunneling equipment, and belongs to the technical field of tunnel construction equipment. The cutterhead comprises a cutterhead body and a temperature control channel arranged on the cutterhead body, the temperature control channel is a temperature control pipeline, and a connecting structure used for connecting the temperature control pipeline with the cutterhead body is arranged on the cutterhead body. The tunneling equipment comprises the cutter head. According to the cutter head, the temperature control pipeline is used as a temperature control channel for the heating medium to circulate, the number of joints is small, the risk of leakage of the internal heating medium can be reduced, and the machining difficulty and cost of the cutter head body can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction equipment, in particular to a cutter head and excavation equipment. Background Art

[0002] During tunnel excavation, if the ground is unstable, a frozen cutterhead is often used. The frozen cutterhead provides circulating cooling fluid to the cutterhead to freeze the cutterhead and the ground in front of it, so as to stabilize the tunnel face and ensure construction safety.

[0003] The natural thawing of the cutter disc and the face takes a long time. In order to improve the thawing efficiency, the existing utility model patent with the authorization announcement number CN213144471U discloses a cutter disc, which includes a cutter disc body, an electric heating plate is arranged on the back of the cutter disc body, and a groove is also provided on the cutter disc body as a temperature control channel. When the cutter disc needs to be frozen, a freezing liquid is introduced into the temperature control channel; when the cutter disc needs to be thawed, it can be heated by the electric heating plate, and a circulating heating liquid can also be introduced into the temperature control channel for auxiliary heating to improve the thawing rate of the cutter disc and the face.

[0004] Directly making grooves on the cutter body as the temperature control channel, on the one hand, because the cutter body is composed of a main beam, a secondary beam and a ring beam, the temperature control channel can only be opened along the main beam, the secondary beam or the ring beam, and the temperature control channel has many joints between different beams, which is prone to leakage. On the other hand, directly making grooves on the cutter body to process the temperature control channel will lead to inconvenience in processing and high processing costs. Utility Model Content

[0005] One of the purposes of the utility model is to provide a cutter disc to solve the technical problems of the prior art that the temperature control channel is processed by grooving the cutter disc body, resulting in many seams in the temperature control channel, which is prone to leakage, and the technical problem of inconvenient processing.

[0006] One of the purposes of the utility model is to provide a tunneling device to solve the above technical problems.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the cutter disc provided by the utility model is:

[0008] A cutter disc comprises a cutter disc body and a temperature control channel arranged on the cutter disc body, the cutter disc body comprises radiation beams arranged at intervals along the circumference and annular beams fixedly connected to the radiation beams, the temperature control channel is a temperature control pipe, a connection structure for connecting the temperature control pipe to the cutter disc body is provided on the cutter disc body, the connection structure is a protective pipe fixed to the cutter disc body, the temperature control pipe is passed through the protective pipe, the temperature control pipe is arranged along the annular beam, and the temperature control pipe extends along the radiation beam toward the center of the cutter disc body at the connection between the radiation beam and the annular beam, and then returns to the annular beam in the opposite direction.

[0009] As a further improvement, the protective pipe is located at the back of the cutter disc body, the cross-sectional shape of the protective pipe is rectangular, and the width of the protective pipe is equal to the thickness of the plate material constituting the cutter disc body.

[0010] As a further improvement, the protective pipe is welded from plates.

[0011] The beneficial effect is that the cutter disc in the utility model is an improvement on the prior art. The cutter disc uses a temperature control pipe as a temperature control channel for the circulation of the heating medium. Compared with the prior art in which the temperature control channel is processed by directly grooving the cutter disc body, there are fewer seams, which can reduce the risk of internal heating medium leakage. Moreover, the temperature control pipe can be arranged on the cutter disc body by bending and using a connecting structure, which effectively reduces the processing difficulty and cost of the cutter disc body.

[0012] In order to achieve the above-mentioned purpose, the technical solution of the tunneling equipment provided by the utility model is:

[0013] A tunneling device includes a cutterhead, which includes a cutterhead body and a temperature control channel arranged on the cutterhead body. The cutterhead body includes radiation beams arranged at intervals along the circumference and annular beams fixedly connected to the radiation beams. The temperature control channel is a temperature control pipe. The cutterhead body is provided with a connecting structure for connecting the temperature control pipe to the cutterhead body. The connecting structure is a protective pipe fixed to the cutterhead body. The temperature control pipe is passed through the protective pipe. The temperature control pipe is arranged along the annular beam. The temperature control pipe extends along the radiation beam toward the center of the cutterhead body at the connection between the radiation beam and the annular beam, and then returns to the annular beam in the opposite direction.

[0014] As a further improvement, the protective pipe is located at the back of the cutter disc body, the cross-sectional shape of the protective pipe is rectangular, and the width of the protective pipe is equal to the thickness of the plate material constituting the cutter disc body.

[0015] As a further improvement, the protective pipe is welded from plates.

[0016] The beneficial effect is that the excavation equipment in the utility model is an improvement on the prior art. The cutter head in the excavation equipment uses a temperature control pipe as a temperature control channel for the circulation of the heating medium. Compared with the prior art in which the temperature control channel is processed by directly grooving the cutter head body, there are fewer seams, which can reduce the risk of internal heating medium leakage. Moreover, the temperature control pipe can be arranged on the cutter head body by bending and using a connecting structure, which effectively reduces the processing difficulty and cost of the cutter head body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the cutter disc in the utility model;

[0018] Figure 2 This is a schematic diagram of the layout structure of the temperature control pipeline in the utility model;

[0019] Figure 3 This is a schematic diagram of the connection relationship between the temperature control pipe and the rotation center in the utility model;

[0020] Figure 4 for Figure 1 Sectional view along line AA;

[0021] Figure 5 for Figure 1 Sectional view along line BB;

[0022] Figure 6 It is a schematic diagram of the arrangement structure of the heating resistor in the utility model.

[0023] Description of reference numerals:

[0024] 1. Main beam; 2. Auxiliary beam; 3. Annular beam; 4. Temperature control pipe; 5. Rotation center; 6. Reserved opening; 7. Side plate; 8. End plate; 9. Wing plate; 10. Heating resistor. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the embodiments.

[0026] The cutter disc in the utility model utilizes a temperature control pipe as a temperature control channel for the circulation of a heating medium, has fewer joints, can reduce the risk of leakage of the internal heating medium, and can reduce the difficulty and cost of processing the cutter disc body.

[0027] The specific embodiment of the cutter disc provided by the utility model:

[0028] A cutter disc comprises a cutter disc body and a temperature control channel arranged on the cutter disc body, wherein the temperature control channel is a temperature control pipe 4.

[0029] See attached Figure 1The cutter head body includes radial beams arranged at intervals along the circumference, and an annular beam 3 fixedly connected to the radial beams. The radial beams include main beams 1 and auxiliary beams 2 arranged alternately, and the annular beam 3 is connected to the main beams 1 and the auxiliary beams 2 at one end away from the center of the cutter head body.

[0030] See attached Figure 1 Combined with the attached Figure 2 The temperature control pipe 4 extends from the rotation center 5 at the center of the cutter head body along one side of the main beam 1 in the direction away from the center of the cutter head body, and continues to extend along the annular beam 3 after reaching the annular beam 3; after meeting the auxiliary beam 2, the temperature control pipe 4 extends along one side of the auxiliary beam 2 in the direction of the center of the cutter head body, and then the temperature control pipe 4 extends from the other side of the auxiliary beam 2 in the direction away from the center of the cutter head body and returns to the annular beam 3, and continues to extend along the annular beam 3 in the original direction; after meeting the main beam 1, the temperature control pipe 4 extends along one side of the main beam 1 in the direction of the center of the cutter head body, and then the temperature control pipe 4 extends from the other side of the main beam 1 in the direction away from the center of the cutter head body and returns to the annular beam 3. By analogy, the temperature control pipe 4 returns to the center of the cutter head body after circling the cutter head body for one cycle.

[0031] See attached Figure 3 Both ends of the temperature control pipe 4 are connected to the circulation system of the heating medium through the reserved opening 6 on the rotation center 5 at the center of the cutter head body, so as to facilitate the heating medium to be introduced into the temperature control pipe 4 from the rear. The heating medium can be a heating liquid or steam.

[0032] The cutter body is provided with a connection structure for connecting the temperature control pipe 4. The connection structure is a protective pipe fixed to the cutter body, and the temperature control pipe 4 is passed through the protective pipe. The protective pipe can connect the temperature control pipe 4 to the cutter body and protect the temperature control pipe 4.

[0033] The protective pipe is set on the back of the cutter head body, see the attached Figure 4 and attached Figure 5In this embodiment, the back surface of the cutter disc body serves as an inner wall of the protective pipe. The protective pipe includes two side plates 7 that are parallel to each other and welded to the back of the cutter disc body, and also includes an end plate 8 that is welded and fixed to the two side plates 7 and is perpendicular to the two side plates 7. The back surface of the cutter disc body between the two side plates 7 constitutes an inner wall of the protective pipe. The side plates 7 and the end plates 8 are both made of steel plates. In order to improve the stability of the temperature control pipe 4 and the heat conduction effect between the temperature control pipe 4 and the protective pipe, when the temperature control pipe 4 is installed in the protective pipe, the temperature control pipe 4 can be fixedly connected to the side plates 7 by spot welding. In other embodiments, the temperature control pipe 4 may not be fixed to the side plates 7. In other embodiments, aluminum alloy or organic material can be used to process the protective pipe with a "J"-shaped cross section, and then the protective pipe is fixedly installed on the cutter disc body by bolts.

[0034] The width of the protective pipe is equal to the thickness of the plate material constituting the cutter disc body. Taking the main beam 1 as an example, the main beam 1 includes a web and wing plates 9 located on both sides of the web, and the width direction of the wing plates 9 is in the same direction as the axial direction of the cutter disc body. The temperature control pipe 4 is arranged on the side of the wing plate 9 away from the face and along the wing plate 9, and the outer walls of the two side plates 7 are aligned with the side walls of the wing plate 9 in the thickness direction, so that the width of the protective pipe arranged on the main beam 1 is equal to the thickness of the wing plate 9. This can make the integrity of the protective pipe and the wing plate 9 stronger on the one hand, and make the space in the protective pipe as large as possible on the other hand.

[0035] A heat-conducting medium can also be used in the protective pipe to fill the gap between the temperature-control pipe 4 and the inner wall of the protective pipe to improve the heat transfer efficiency between the temperature-control pipe 4 and the protective pipe. The heat-conducting medium can be a heat-conducting glue. Alternatively, the cross section of the temperature-control pipe can be processed into a square, so that the outer wall of one side of the temperature-control pipe can directly fit the surface of the cutter head body to improve the heat transfer efficiency.

[0036] See attached Figure 1 Combined with the attached Figure 6 In order to further improve the thawing rate, heating resistors 10 can be set at multiple points of the cutter body, and the wires for supplying power to the heating resistors 10 are also inserted into the protective pipe, so that the pipelines on the back of the cutter body are more neat. The wires for supplying power to the heating resistors 10 are gathered at the center of the cutter body and connected to the power supply system through the reserved opening 6 on the rotation center 5.

[0037] In this embodiment, the temperature control pipe 4 is a whole metal pipe. On the one hand, there are not many joints, which can reduce the risk of internal heating medium leakage. On the other hand, by bending the metal pipe, it can be arranged along the circumference of the cutter head body, and there is no need to groove the cutter head body, which reduces the processing difficulty and cost. At the same time, the metal temperature control pipe 4 can also be used as a circulation channel for the freezing medium when the cutter head is frozen.

[0038] In other embodiments, the temperature control pipe 4 may be arranged in other forms. For example, in one embodiment, the temperature control pipe 4 may be arranged only on the annular beam 3. In another embodiment, two temperature control pipes 4 are arranged, one of which covers half of the range of the cutter head body, and the other covers the other half of the range of the cutter head body. Of course, three or four temperature control channels may also be arranged.

[0039] In other embodiments, the temperature control channel and the protective pipe may be fixed at one side of the wing plate 9 in the thickness direction, or may be fixed on the web.

[0040] In other embodiments, the connection structure may have other forms. For example, the temperature control pipe 4 may be directly fixed to the cutter head body by welding, and the welding point is the connection structure. For another example, the connection structure may be a clamp, which is fixed to the cutter head body by bolts or welding, and the temperature control pipe 4 is connected to the cutter head body.

[0041] Specific embodiments of the tunneling equipment provided by the utility model:

[0042] The excavation equipment includes a cutterhead, which is the cutterhead in the above embodiment and will not be described in detail here.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cutter disc, comprising a cutter disc body and a temperature control channel arranged on the cutter disc body, wherein the cutter disc body comprises radiation beams arranged at intervals along the circumference and an annular beam fixedly connected to the radiation beams, wherein: The temperature control channel is a temperature control pipe. A connecting structure for connecting the temperature control pipe to the cutter disc body is provided on the cutter disc body. The connecting structure is a protective pipe fixed to the cutter disc body. The temperature control pipe is passed through the protective pipe. The temperature control pipe is arranged along the annular beam. The temperature control pipe extends along the radial beam toward the center of the cutter disc body at the connection between the radial beam and the annular beam, and then returns to the annular beam in the opposite direction.

2. The cutter head according to claim 1, characterized in that: The protective pipe is located at the back of the cutter disc body. The cross-sectional shape of the protective pipe is rectangular. The width of the protective pipe is equal to the thickness of the plate material constituting the cutter disc body.

3. The cutter head according to claim 2, characterized in that: The protective pipe is welded from plates.

4. A tunneling device, comprising a cutterhead, the cutterhead comprising a cutterhead body and a temperature control channel arranged on the cutterhead body, the cutterhead body comprising radiating beams arranged at intervals along the circumference and an annular beam fixedly connected to the radiating beams, characterized in that: The temperature control channel is a temperature control pipe. A connecting structure for connecting the temperature control pipe to the cutter disc body is provided on the cutter disc body. The connecting structure is a protective pipe fixed to the cutter disc body. The temperature control pipe is passed through the protective pipe. The temperature control pipe is arranged along the annular beam. The temperature control pipe extends along the radial beam toward the center of the cutter disc body at the connection between the radial beam and the annular beam, and then returns to the annular beam in the opposite direction.

5. The excavation equipment according to claim 4, characterized in that: The protective pipe is located at the back of the cutter disc body. The cross-sectional shape of the protective pipe is rectangular. The width of the protective pipe is equal to the thickness of the plate material constituting the cutter disc body.

6. The excavation equipment according to claim 5, characterized in that: The protective pipe is welded from plates.

Images