Telescopic part of heading machine and heading equipment

Abstract

The utility model relates to the technical field of tunneling construction equipment, in particular to a telescopic part of a tunneling machine and tunneling equipment. The heading machine telescopic part comprises a first sleeve and a second sleeve which are in sliding connection in the axial direction, a limiting part protruding towards the second sleeve is formed on the first sleeve, the limiting part is arranged in an inclined mode, and the locking assembly is arranged between the first sleeve and the second sleeve and arranged on the side, with the large distance from the second sleeve, of the limiting part in the axial direction. The locking assembly comprises a locking piece and a driving assembly connected with the locking piece, and the driving assembly can drive the locking piece to slide in the axial direction so that the locking piece can abut against the limiting part to lock the relative displacement of the first sleeve and the second sleeve. The locking piece can abut against the limiting part to lock the relative position of the first sleeve and the second sleeve, so that the situation that the gap between the first sleeve and the second sleeve is larger and larger is avoided, the rigidity of the telescopic assembly is guaranteed, and the service life of the telescopic part of the heading machine is prolonged.

Description

Technical Field

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

[0002] A roadheader is a combined unit that can achieve cutting, loading and transportation, self-propelled and spray dust removal. The telescopic part of the roadheader includes an outer cylinder, a telescopic inner cylinder, a cutting head, a protective cylinder and a floating seal, wherein the outer cylinder and the telescopic inner cylinder form a telescopic mechanism that can slide and retract. The existing telescopic part of the roadheader does not have a clamping function, and the mating surface will be worn when the telescopic inner cylinder and the outer cylinder reciprocate and retract, resulting in an increasing gap between the telescopic inner cylinder and the outer cylinder, reducing the rigidity of the telescopic mechanism, and being affected by the impact force during the excavation operation of the equipment, resulting in a reduced service life of the telescopic part of the roadheader.

[0003] In addition, there is a gap between the protective tube and the cutting head. The fine materials and dust cut off during the excavation of the tunnel boring machine can easily enter the gap and affect the service life of the floating seal, and then affect the service life of the entire telescopic part of the tunnel boring machine. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a telescopic part of a tunnel boring machine and tunnel boring equipment to solve the problem of low service life of the telescopic part of the existing tunnel boring machine.

[0005] The first aspect of the utility model provides a telescopic part of a tunnel boring machine, wherein the telescopic part of the tunnel boring machine comprises:

[0006] The telescopic assembly comprises a first sleeve and a second sleeve connected in an axial sliding manner, wherein the first sleeve is formed with a stopper protruding toward the second sleeve, and the stopper is arranged in an inclined manner so that the distance between one end of the stopper in the axial direction and the second sleeve is greater than the distance between the other end and the second sleeve;

[0007] A locking assembly is arranged between the first sleeve and the second sleeve, and is arranged on the side where the distance between the limiting portion and the second sleeve is larger in the axial direction; the locking assembly includes a locking member and a driving assembly connected to the locking member, and the driving assembly can drive the locking member to slide along the axial direction so that the locking member abuts against the limiting portion to lock the relative displacement of the first sleeve and the second sleeve.

[0008] Preferably, two limiting parts are provided, and the two limiting parts are spaced apart along the axial direction of the telescopic assembly. The two limiting parts and the first sleeve and the second sleeve form an adjustment cavity, and the locking assembly is provided in the adjustment cavity;

[0009] The locking member includes a first locking member and a second locking member arranged along the axial interval, and the driving component is arranged between the first locking member and the second locking member. The driving component can drive the first locking member and the second locking member to move in a direction away from or close to each other, so that the first locking member and the second locking member are respectively abutted against the two limiting parts or separated from the limiting parts.

[0010] Preferably, the driving assembly comprises a first driving assembly connected to the first locking member and a second driving assembly connected to the second locking member;

[0011] A locking channel connected to the adjusting chamber is opened in the cylinder wall of the telescopic assembly, and an outlet of the locking channel is arranged between the first driving assembly and the second driving assembly. The fluid medium entering the adjusting chamber from the outlet of the locking channel can drive the first driving assembly and the second driving assembly to move in a direction away from each other.

[0012] Preferably, the first drive assembly includes a first inner piston and a first outer piston which are slidably connected along the axial direction, and the first locking piece is connected to the first inner piston; the second drive assembly includes a second inner piston and a second outer piston which are slidably connected along the axial direction, and the second locking piece is connected to the second inner piston; the first inner piston and the second inner piston can slide along the axial direction and maintain abutment, and the first inner piston, the second inner piston and the wall of the regulating chamber form a closed space connected to the locking channel.

[0013] Preferably, a release channel connected to the regulating chamber is opened in the cylinder wall of the telescopic assembly, and a first outlet located between the first inner piston and the first outer piston and a second outlet located between the second inner piston and the second outer piston are formed on the release channel. The fluid medium entering the regulating chamber through the first outlet and the second outlet can drive the first inner piston and the second inner piston to slide in a direction close to each other.

[0014] Preferably, the locking assembly further comprises:

[0015] A sealing member, embedded between the outer wall of the drive assembly and the cavity wall of the regulating cavity, and / or embedded between the first inner piston and the first outer piston, and / or embedded between the first inner piston and the second inner piston, and / or embedded between the second inner piston and the second outer piston;

[0016] A guide member is arranged in the driving assembly and / or between the driving assembly and the regulating chamber.

[0017] Preferably, the locking member is formed as an annular cylindrical structure with an opening, and when the locking member abuts against the limiting portion, the width of the opening decreases, so that the locking member contracts;

[0018] At least part of the outer wall of the locking member is formed as an abutment portion that can fit with the limiting portion, and the abutment portion is formed as a trumpet-shaped structure, so that the abutment portion and the limiting portion are in surface contact.

[0019] Preferably, the telescopic part of the tunnel boring machine further includes:

[0020] A limiting member fixedly connected to the first sleeve, wherein the limiting member and the second sleeve are kept in contact with each other during the sliding process of the first sleeve and the second sleeve, and the limiting portion is formed on the limiting member;

[0021] A connecting member is connected to the locking member and the driving assembly, and a side wall of the connecting member abuts against the limiting member.

[0022] Preferably, the telescopic part of the tunnel boring machine further includes:

[0023] A cutting head is arranged on the outer side of the telescopic assembly in the radial direction, and a gap is provided between the cutting head and the telescopic assembly to form a material accumulation cavity;

[0024] A connecting shaft is connected to the telescopic assembly and the cutting head respectively. A cleaning channel is provided on the connecting shaft, and the cleaning channel is communicated with the material accumulation chamber.

[0025] A second aspect of the utility model provides a tunneling device, comprising a tunneling machine telescopic part as described in any of the above technical solutions.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] The telescopic part of the tunnel boring machine of the utility model is provided with a limiting part on the first sleeve that protrudes toward the second sleeve and is arranged at an angle, and a locking assembly is provided between the first sleeve and the second sleeve. The driving assembly drives the locking piece to move in a direction close to or away from the limiting part. When the locking piece moves in a direction close to the limiting part and abuts against the limiting part, the position of the locking piece is fixed to lock the relative position of the first sleeve and the second sleeve to avoid relative displacement of the first sleeve and the second sleeve, thereby avoiding the situation where the gap between the first sleeve and the second sleeve becomes larger and larger, ensuring the rigidity of the telescopic assembly, improving the service life of the telescopic part of the tunnel boring machine, and further ensuring the service life of the tunnel boring equipment.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of the telescopic part of the tunnel boring machine provided in an embodiment of the utility model;

[0031] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0032] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0033] Figure 4 A schematic structural diagram of a locking member in a telescopic portion of a tunnel boring machine provided in an embodiment of the utility model.

[0034] Icons: 101-first sleeve; 102-second sleeve; 103-limiting member; 104-limiting portion; 110-locking channel; 111-exit; 120-releasing channel; 121-first exit; 122-second exit; 130-adjusting chamber; 131-first adjustment space; 132-second adjustment space; 133-third adjustment space; 201-first locking member; 202-second locking member; 203-opening; 204-abutment portion; 210-first drive assembly; 211-first inner piston; 212-first outer piston; 220-second drive assembly; 221-second inner piston; 222-second outer piston; 30-sealing member; 40-guide member; 50-connecting member; 60-cutting head; 70-connecting shaft; 71-cleaning channel; 72-material accumulation chamber; 80-support member; 81-floating seal; 91-spraying member; 92-water pump. DETAILED DESCRIPTION

[0035] The following specific embodiments are provided to help the reader 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, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0036] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been 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.

[0037] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0038] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0039] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0040] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations 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 relational terms used herein will be interpreted accordingly.

[0041] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0042] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0043] 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 various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0044] According to a first aspect of the utility model, a telescopic part of a tunnel boring machine is provided, which includes a telescopic assembly and a locking assembly.

[0045] Hereinafter, the specific structures of the above-mentioned components of the telescopic part of the tunnel boring machine according to the present embodiment will be described.

[0046] In this embodiment, if Figures 1 to 3 As shown, the telescopic assembly includes a first sleeve 101 and a second sleeve 102 that are slidably connected along their axial direction. The first sleeve 101 and the second sleeve 102 are both formed as hollow cylindrical structures. The first sleeve 101 and the second sleeve 102 slide relative to each other to change the overall length of the telescopic assembly. The axial direction of the telescopic assembly is the direction in which the axes of the first sleeve 101 and the second sleeve 102 extend.

[0047] In this embodiment, for example, 1 to Figure 3 In the structure shown, the first sleeve 101 is arranged outside the second sleeve 102, that is, the first sleeve 101 is the outer sleeve of the telescopic part of the tunnel boring machine, and the second sleeve 102 is the inner sleeve of the telescopic part of the tunnel boring machine. However, in other optional embodiments, the first sleeve 101 can be arranged inside the second sleeve 102, that is, the first sleeve 101 is the inner sleeve of the telescopic part of the tunnel boring machine, and the second sleeve 102 is the outer sleeve of the telescopic part of the tunnel boring machine.

[0048] Furthermore, the first sleeve 101 is formed with a limiting portion 104 protruding toward the second sleeve 102, and the limiting portion 104 is inclined (that is, the limiting portion 104 is arranged at an angle relative to the axial direction of the telescopic assembly), so that the distance between one end of the limiting portion 104 in the axial direction and the second sleeve 102 is greater than the distance between the other end of the limiting portion 104 in the axial direction and the second sleeve 102, and the limiting portion 104 can be formed as a funnel-shaped annular surface.

[0049] like Figure 1 As shown, in the radial direction of the telescopic assembly, the locking assembly is arranged between the first sleeve 101 and the second sleeve 102, and in the axial direction of the telescopic assembly, it is arranged on the side where the distance between the limiting portion 104 and the second sleeve 102 is large; the locking assembly includes a locking member and a driving assembly connected to the locking member, and the driving assembly can drive the locking member to slide along the axial direction, so that the locking member abuts against the limiting portion 104 to lock the relative displacement of the first sleeve 101 and the second sleeve 102. Specifically, when the locking member moves toward the direction close to the limiting portion 104 and abuts against the limiting portion 104, the position of the locking member is fixed, so that the relative position of the first sleeve 101 and the second sleeve 102 is locked, and the relative displacement of the first sleeve 101 and the second sleeve 102 is avoided, thereby avoiding the situation where the gap between the first sleeve 101 and the second sleeve 102 becomes larger and larger, ensuring the rigidity of the telescopic assembly and improving the service life of the telescopic portion of the tunnel boring machine.

[0050] Furthermore, if Figure 4 As shown, the locking member is formed as an annular cylindrical structure with an opening 203. When the locking member abuts against the limiting portion 104, the width of the opening 203 is reduced, causing the locking member to shrink. In this way, the locking member can tightly cover the second sleeve 102 located inside the first sleeve 101 to achieve clamping of the second sleeve 102, thereby improving the locking effect of the locking member on the second sleeve 102 and improving the reliability of the locking assembly in locking the relative positions of the first sleeve 101 and the second sleeve 102.

[0051] Preferably, at least part of the outer wall of the locking member is formed as an abutment portion 204 that is in contact with the limiting portion 104, and the abutment portion 204 is formed as a trumpet-shaped annular structure, so that there is surface contact between the abutment portion 204 and the limiting portion 104, thereby increasing the contact area between the locking member and the limiting portion 104, ensuring that the fixed position of the locking member is effectively limited, and avoiding axial or radial movement of the locking member after locking, thereby improving the locking effect of the locking assembly on the telescopic assembly.

[0052] In a preferred embodiment, Figure 1As shown, two limit portions 104 are provided, thereby improving the locking reliability and stability of the locking assembly on the telescopic assembly; specifically, the two limit portions 104 are arranged at intervals along the axial direction of the telescopic assembly, and the inclination directions of the two limit portions 104 are opposite, so that the two limit portions 104 and the ends of the second sleeve 102 with a larger distance are arranged opposite to each other; the two limit portions 104 and the first sleeve 101 and the second sleeve 102 form an adjusting cavity 130, and the locking assembly is arranged in the adjusting cavity 130, and the locking assembly slides axially in the adjusting cavity 130, so that the telescopic assembly can be locked when it is extended to different lengths.

[0053] Furthermore, the locking member includes a first locking member 201 and a second locking member 202 arranged at an axial interval, and a driving component is arranged between the first locking member 201 and the second locking member 202. The driving component can drive the first locking member 201 and the second locking member 202 to move in a direction away from each other or closer to each other, so that the first locking member 201 and the second locking member 202 are respectively abutted against the two limiting portions 104 or separated from the limiting portions 104. Specifically, when the first sleeve 101 and the second sleeve 102 slide to the point where locking is required, the first locking member 201 and the second locking member 202 move in a direction away from each other, so that the first locking member 201 and the second locking member 202 are respectively abutted against the two limiting portions 104, so as to clamp the second sleeve 102 located inside.

[0054] Furthermore, if Figures 1 to 3 As shown, the driving assembly includes a first driving assembly 210 connected to the first locking member 201 and a second driving assembly 220 connected to the second locking member 202, so that the first driving assembly 210 drives the first locking member 201 to reciprocate, and the second driving assembly 220 drives the second locking member 202 to reciprocate, ensuring that the two limiting parts 104 can be subjected to equal forces, thereby ensuring the locking effect of the locking assembly on the telescopic assembly.

[0055] In a preferred embodiment, Figure 1 and Figure 3 As shown, a locking channel 110 connected to the adjusting chamber 130 is opened in the cylinder wall of the telescopic component. The locking channel 110 is used to transport the fluid medium into the adjusting chamber 130. The locking channel 110 is preferably arranged on the first sleeve 101, so as to facilitate the connection with the pipeline for transporting the fluid medium; the fluid medium can be a liquid, such as hydraulic oil, so that the driving component is formed into a hydraulic drive, which can be suitable for different working environments and working conditions, meet the needs of excavation construction, and has the advantages of stable and reliable operation.

[0056] In this embodiment, the drive component divides the regulating chamber 130 into three spaces, namely, a first regulating space 131, a second regulating space 132 and a third regulating space 133, wherein the second regulating space 132 and the third regulating space 133 are in a connected state, so that the fluid medium flowing in through the release channel 120 described below can enter the second regulating space 132 and the third regulating space 133 at the same time, and the first regulating space 131 is not connected with the second regulating space 132 and the third regulating space 133, so that the circulating medium flowing in through the locking channel 110 can only flow into the first regulating space 131.

[0057] Specifically, the outlet 111 of the locking channel 110 is arranged between the first drive component 210 and the second drive component 220. When it is necessary to lock the position between the first sleeve 101 and the second sleeve 102, the fluid medium in the first adjustment space 131 of the adjustment chamber 130 enters the outlet 111 of the locking channel 110. Under the action of its pressure, it can drive the first drive component 210 and the second drive component 220 to move in a direction away from each other, thereby driving the first locking member 201 and the second locking member 202 to abut against the two limiting portions 104 respectively, so that the positions of the first locking member 201 and the second locking member 202 are fixed, and the second sleeve 102 is firmly clamped to achieve locking of the telescopic component.

[0058] In other optional embodiments, the fluid medium may also be gas.

[0059] More specifically, in this embodiment, if Figures 1 to 3 As shown, the first drive assembly 210 includes a first inner piston 211 and a first outer piston 212 axially slidably connected, and the first locking piece 201 is connected to the first inner piston 211; the second drive assembly 220 includes a second inner piston 221 and a second outer piston 222 axially slidably connected, and the second locking piece 202 is connected to the second inner piston 221, wherein the first inner piston 211 is formed into a stepped annular structure, the second inner piston 221 is formed into an annular structure with a protrusion on the side wall, and the first outer piston 212 and the second outer piston 222 are formed into annular structures; the first inner piston 211 and the second inner piston 221 can slide axially and maintain abutment during the sliding process, so that the first inner piston 211, the second inner piston 221 and the cavity wall of the regulating cavity 130 form a closed space connected to the locking channel 110, and the closed space is the first regulating space 131.

[0060] It should be noted that the sliding direction of the first inner piston 211 and the second inner piston 221 is the axial direction of the telescopic assembly.

[0061] In this embodiment, if Figure 1 and Figure 2As shown, a release channel 120 connected to the adjustment chamber 130 is opened in the barrel wall of the telescopic assembly. The release channel 120 is used to transport fluid medium to the second adjustment space 132 and the third adjustment space 133 in the adjustment chamber 130, so as to move the first locking member 201 and the second locking member 202 in the direction away from the limiting portion 104 when the telescopic assembly does not need to be locked. The release channel 120 is preferably arranged on the first sleeve 101 to facilitate its connection with the pipeline for transporting the fluid medium.

[0062] Specifically, the release channel 120 is formed with a first outlet 121 located between the first inner piston 211 and the first outer piston 212 and a second outlet 122 located between the second inner piston 221 and the second outer piston 222. The fluid medium entering the regulating chamber 130 from the first outlet 121 can drive the first inner piston 211 to slide in a direction away from the first outer piston 212, and the fluid medium entering the regulating chamber 130 from the second outlet 122 can drive the second inner piston 221 to slide in a direction away from the second outer piston 222, so that the first inner piston 211 and the second inner piston 221 can slide in a direction approaching each other, thereby driving the first locking member 201 and the second locking member 202 to slide in a direction approaching each other, so that the first locking member 201 and the second locking member 202 are respectively separated from the limit portion 104, so that the telescopic assembly is unlocked to restore to a state where the length can be adjusted.

[0063] It should be noted that, in the present embodiment, when it is necessary to lock the positional relationship between the first sleeve 101 and the second sleeve 102, the locking channel 110 is in a pressurized state, so that the fluid medium flows to the first regulating space 131, and the release channel 120 is in a depressurized state at this time, that is, no fluid medium will flow toward the second regulating space 132 or the third regulating space 133; when it is necessary to restore the function of the telescopic assembly to adjust the length, the locking channel 110 is depressurized, so that when the release channel 120 is in a pressurized state, the fluid medium entering the second regulating space 132 and the third regulating space 133 can smoothly drive the first inner piston 211 and the second inner piston 221 to move closer to each other.

[0064] In other optional implementations, the drive assembly may also use a telescopic cylinder, motor or screw, but the space occupied is relatively large and is not conducive to the structural layout of the telescopic part of the tunnel boring machine. The structure of the present application that uses hydraulic distance to achieve adjustment has the advantages of small space occupation, no major changes to the structure of the telescopic part of the tunnel boring machine, low cost, and convenient and reliable control.

[0065] In addition, in this embodiment, Figures 1 to 3As shown, the locking assembly further includes a seal 30, which can be an elastic annular seal ring, and can be embedded between the outer wall of the drive assembly and the cavity wall of the regulating chamber 130, between the first inner piston 211 and the first outer piston 212, between the first inner piston 211 and the second inner piston 221, and between the second inner piston 221 and the second outer piston 222, so as to ensure the sealing of the first regulating space 131, the second regulating space 132 or the third regulating space 133 as described above, and avoid leakage of the fluid medium. Preferably, a seal 30 is provided between the outer wall of the drive assembly and the cavity wall of the regulating chamber 130, between the first inner piston 211 and the first outer piston 212, between the first inner piston 211 and the second inner piston 221, and between the second inner piston 221 and the second outer piston 222, so as to ensure reliable sealing.

[0066] Preferably, in this embodiment, if Figures 1 to 3 As shown, the locking assembly further includes a guide member 40, which can be a guide ring, disposed in the drive assembly and / or disposed between the drive assembly and the regulating chamber 130. The guide member 40 has the function of guiding and providing support, so as to prevent the contact-type movement between the inner piston and the outer piston and / or between the drive assembly and the inner wall of the regulating chamber 130 from causing scratches or even damage to the surface. In a preferred embodiment, a guide member 40 is disposed between the first outer piston 212 and the first inner piston 211, between the first inner piston 211 and the chamber wall of the regulating chamber 130, between the first inner piston 211 and the second inner piston 221, between the second inner piston 221 and the inner wall of the regulating chamber 130, and between the second inner piston 221 and the second outer piston 222, so as to ensure that all contact-type moving structures can reduce friction and obtain a certain support effect.

[0067] In this embodiment, if Figures 1 to 3 As shown, the telescopic part of the tunnel boring machine also includes a limit member 103, which is formed as a block structure and is fixedly connected to the first sleeve 101. The limit part 104 is formed on the limit member 103. The limit member 103 can be connected to the first sleeve 101 by screws or bonding, which is convenient for processing, manufacturing and adjustment.

[0068] In this embodiment, during the sliding process of the first sleeve 101 and the second sleeve 102 , the limit member 103 maintains contact with the second sleeve 102 , and the sealing member 30 as described above may also be provided between the limit member 103 and the second sleeve 102 to further improve the sealing performance of the adjustment chamber 130 .

[0069] In this embodiment, if Figure 1As shown, the telescopic part of the tunnel boring machine also includes a connecting member 50, which is respectively connected to the locking member and the driving assembly. The locking member and the driving assembly are both provided with grooves. The connecting member 50 can adopt a plurality of buckle ring structures with a concave cross-section. The plurality of buckle ring structures are arranged along the circumference of the locking member to connect and buckle the locking member and the driving assembly together; for example, two buckle rings are provided, and the two buckle rings are butt-jointed along the radial direction of the locking member to fix the locking member and the driving assembly. Such a setting makes the assembly of the locking member and the driving assembly have the advantages of good processability and compact structure.

[0070] Preferably, the side wall of the connecting member 50 abuts against the limiting member 103 , so that the limiting member 103 can limit the connecting member 50 in the radial direction.

[0071] In addition, if Figure 1 As shown, the telescopic part of the tunnel boring machine also includes a cutting head 60 and a connecting shaft 70. The cutting probe is arranged at one end of the telescopic assembly in the axial direction and arranged on the outer side of the telescopic assembly in the radial direction, so that there is a gap between the cutting head 60 and the telescopic assembly, and a material accumulation chamber 72 is formed; the connecting shaft 70 is connected to the telescopic assembly and the cutting head 60 respectively, and the connecting shaft 70 is rotatably connected to the telescopic assembly. During the tunneling process of the tunnel boring machine, the cut fine materials and dust will enter the material accumulation chamber 72 from the gap between the cutting head 60 and the telescopic assembly, and will accumulate and compact for a long time, causing wear to the parts. The materials and dust are also easy to enter the floating seal 81, thereby scratching the floating seal 81, reducing the service life of the floating seal 81 and thus affecting the service life of the entire telescopic part of the tunnel boring machine.

[0072] In this embodiment, if Figure 1 As shown, a cleaning channel 71 is provided on the connecting shaft 70, and the cleaning channel 71 is connected to the material accumulation chamber 72. Liquid, such as water, for removing materials or dust is supplied to the cleaning channel 71 to clean the material accumulation chamber 72. Under the action of rotation, vibration and flushing, the materials and dust in the material accumulation chamber 72 will be discharged from the gap, so as to reduce the wear of the components in the telescopic part of the tunnel boring machine to a certain extent.

[0073] like Figure 1As shown, the telescopic part of the tunnel boring machine also includes a support member 80 connected to the floating seal 81, which is used to support and fix the floating seal 81. The support member 80 is formed into an annular structure and is sleeved on the outer wall of the connecting shaft 70. Preferably, the cleaning channel 71 extends to the support member 80, and a spray member 91 connected to the cleaning channel 71 is provided on the side of the support member 80 facing the material accumulation chamber 72. The spray member 91 can adopt a spray joint, so that the cleaning liquid is flushed to the material accumulation chamber 72 in a spraying manner, thereby improving the cleaning effect of the material accumulation chamber 72 and ensuring that the material and dust are effectively discharged from the gap; in addition, such a configuration allows the cleaning liquid to flow out from a position close to the floating seal 81, further avoiding damage caused by the material and dust entering the floating seal 81, effectively improving the service life of the floating seal 81, and thus improving the service life of the telescopic part of the tunnel boring machine.

[0074] Furthermore, in this embodiment, if Figure 1 As shown, the telescopic part of the tunnel boring machine also includes a water pump 92 connected to the cleaning channel 71 to provide conveying power for the cleaning liquid in the cleaning channel 71. Preferably, an accommodating space for installing the water pump 92 is provided inside the connecting shaft 70, which has a reasonable layout and saves space, and enables the water pump to be directly connected to the cleaning channel 71, reducing components such as joints and reducing the risk of leakage.

[0075] According to the telescopic part of the tunnel boring machine of the utility model, a limiting part protruding toward the second sleeve and arranged at an incline is arranged on the first sleeve, and a locking assembly is arranged between the first sleeve and the second sleeve. The driving assembly drives the locking piece to move in a direction close to or away from the limiting part. When the locking piece moves in a direction close to the limiting part and abuts against the limiting part, the position of the locking piece is fixed to lock the relative position of the first sleeve and the second sleeve to avoid relative displacement of the first sleeve and the second sleeve, thereby avoiding the situation where the gap between the first sleeve and the second sleeve becomes larger and larger, thereby ensuring the rigidity of the telescopic assembly and improving the service life of the telescopic part of the tunnel boring machine.

[0076] The second aspect of the utility model provides a tunneling equipment, including the tunneling machine telescopic part as described above. The tunneling equipment can be a continuous coal mining machine. The tunneling equipment includes a cutting drum. The drum part and the pick seat on the cutting drum are positioned using the tunneling machine telescopic part as described above. The positioning is accurate and reliable, meeting the design layout requirements of the pick, and is suitable for small-batch continuous coal mining machine production at low cost.

[0077] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are 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 is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; 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 be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A telescopic part of a tunnel boring machine, characterized in that: The telescopic part of the tunnel boring machine comprises: The telescopic assembly comprises a first sleeve and a second sleeve connected in an axial sliding manner, wherein the first sleeve is formed with a stopper protruding toward the second sleeve, and the stopper is arranged in an inclined manner so that the distance between one end of the stopper in the axial direction and the second sleeve is greater than the distance between the other end and the second sleeve; A locking assembly is arranged between the first sleeve and the second sleeve, and is arranged on the side where the distance between the limiting portion and the second sleeve is larger in the axial direction; the locking assembly includes a locking member and a driving assembly connected to the locking member, and the driving assembly can drive the locking member to slide along the axial direction so that the locking member abuts against the limiting portion to lock the relative displacement of the first sleeve and the second sleeve.

2. The telescopic part of the tunnel boring machine according to claim 1, characterized in that: There are two limit parts, which are spaced apart along the axial direction of the telescopic assembly. The two limit parts, the first sleeve and the second sleeve form an adjustment cavity, and the locking assembly is arranged in the adjustment cavity. The locking member includes a first locking member and a second locking member arranged along the axial interval, and the driving component is arranged between the first locking member and the second locking member. The driving component can drive the first locking member and the second locking member to move in a direction away from or close to each other, so that the first locking member and the second locking member are respectively abutted against the two limiting parts or separated from the limiting parts.

3. The telescopic part of the tunnel boring machine according to claim 2, characterized in that: The driving assembly includes a first driving assembly connected to the first locking member and a second driving assembly connected to the second locking member; A locking channel connected to the adjusting chamber is opened in the cylinder wall of the telescopic assembly, and an outlet of the locking channel is arranged between the first driving assembly and the second driving assembly. The fluid medium entering the adjusting chamber from the outlet of the locking channel can drive the first driving assembly and the second driving assembly to move in a direction away from each other.

4. The telescopic part of the tunnel boring machine according to claim 3, characterized in that: The first drive assembly includes a first inner piston and a first outer piston which are slidably connected along the axial direction, and the first locking piece is connected to the first inner piston; the second drive assembly includes a second inner piston and a second outer piston which are slidably connected along the axial direction, and the second locking piece is connected to the second inner piston; the first inner piston and the second inner piston can slide along the axial direction and maintain abutment, and the first inner piston, the second inner piston and the wall of the regulating chamber form a closed space which is connected to the locking channel.

5. The telescopic part of the tunnel boring machine according to claim 4, characterized in that: A release channel connected to the regulating chamber is provided in the cylinder wall of the telescopic assembly, and a first outlet located between the first inner piston and the first outer piston and a second outlet located between the second inner piston and the second outer piston are formed on the release channel. The fluid medium entering the regulating chamber through the first outlet and the second outlet can drive the first inner piston and the second inner piston to slide in a direction approaching each other.

6. The telescopic part of the tunnel boring machine according to claim 4, characterized in that: The locking assembly also includes: A sealing member, embedded between the outer wall of the drive assembly and the cavity wall of the regulating cavity, and / or embedded between the first inner piston and the first outer piston, and / or embedded between the first inner piston and the second inner piston, and / or embedded between the second inner piston and the second outer piston; A guide member is arranged in the driving assembly and / or between the driving assembly and the regulating chamber.

7. The telescopic part of the tunnel boring machine according to claim 1, characterized in that: The locking member is formed into a ring-shaped cylindrical structure with an opening, and when the locking member abuts against the limiting portion, the width of the opening is reduced, so that the locking member is contracted; At least part of the outer wall of the locking member is formed as an abutment portion that can fit with the limiting portion, and the abutment portion is formed as a trumpet-shaped structure, so that the abutment portion and the limiting portion are in surface contact.

8. The telescopic part of the tunnel boring machine according to claim 1, characterized in that: The telescopic part of the tunnel boring machine also includes: A limiting member fixedly connected to the first sleeve, wherein the limiting member and the second sleeve are kept in contact with each other during the sliding process of the first sleeve and the second sleeve, and the limiting portion is formed on the limiting member; A connecting member is connected to the locking member and the driving assembly, and a side wall of the connecting member abuts against the limiting member.

9. The telescopic part of the tunnel boring machine according to claim 1, characterized in that: The telescopic part of the tunnel boring machine also includes: A cutting head is arranged on the outer side of the telescopic assembly in the radial direction, and a gap is provided between the cutting head and the telescopic assembly to form a material accumulation cavity; A connecting shaft is connected to the telescopic assembly and the cutting head respectively. A cleaning channel is provided on the connecting shaft, and the cleaning channel is communicated with the material accumulation chamber.

10. A tunneling device, characterized in that: It comprises the telescopic part of the tunnel boring machine as described in any one of claims 1 to 9.

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