Main machine of tunneling equipment and tunneling equipment

Abstract

The invention provides a main machine of tunneling equipment and the tunneling equipment. The main machine of the tunneling equipment comprises a first shield body and a second shield body and is provided with a spherical hinge structure; the spherical hinge structure comprises a spherical head part arranged on the first shield body and a spherical surface part which is arranged on the second shield body and wraps the spherical head part in a surrounding mode, and the spherical head part can rotate in the spherical surface part. The hinge structure is small in turning radius, flexible to use and capable of turning suddenly, so that a main machine is suitable for suddenly turning tunneling.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction equipment, and in particular to a mainframe of tunneling equipment and the tunneling equipment. Background Art

[0002] During the tunnel construction process, excavation is required through excavation equipment, which is mainly a shield machine or a pipe jacking machine. Taking the shield machine as an example, the excavation equipment needs to turn while moving, so a structure for realizing the turning of the excavation equipment needs to be set between the front shield and the middle shield, and between the middle shield and the rear shield of the shield machine. Such a structure generally includes multiple cylinders and an articulated structure that movably connects the front shield and the middle shield, or the middle shield and the rear shield. Therefore, according to the needs of the turning angle, each cylinder can be controlled to extend different strokes to achieve turning.

[0003] For some specific excavation scenarios, small and medium-sized shield machines (hereinafter referred to as "small shields") are required. Small shields are small in size, and their diameters are generally between 2 meters and 4.2 meters.

[0004] In the above specific excavation scenarios where a small shield is required, the excavation requirement that often accompanies it is sharp turn excavation. Sharp turn excavation requires the excavation equipment to be able to flexibly turn at a large angle. The problems with the planar articulated structure in the prior art are that it has a large turning radius, a small turning angle, and is not flexible in turning.

[0005] Therefore, how to provide an articulated structure with a small turning radius, flexible use, and the ability to make sharp turns is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a main unit of a tunneling equipment, which includes a first shield body, a second shield body, and a ball joint structure; the ball joint structure includes a ball head portion arranged on the first shield body, and a spherical portion portion arranged on the second shield body and surrounding and covering the ball head, and the ball head can rotate within the spherical portion portion.

[0007] The ball joint structure has a small turning radius and is flexible to use, so the main machine of the present invention can achieve sharp turning excavation and is particularly suitable for small shield equipment.

[0008] The main unit is also provided with a limit portion, which is used to limit the freedom of the ball head in the spherical portion. The limit portion is symmetrically arranged on opposite sides of the ball joint structure along the first axis so that the freedom of the ball head is limited and can only rotate around the first axis.

[0009] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the ball head can rotate inside the spherical portion, so that the main machine can adjust the excavation direction. A limit portion is provided inside the main machine, which can limit the rotation of the ball head and the spherical portion, thereby avoiding inconvenience to the operator due to the flexible rotation of the excavation equipment. In a specific construction scenario, the operator can operate the ball head to rotate around a specific axis, which makes the operation more convenient. The limit portions are arranged in pairs and on opposite sides of the ball joint structure along the first axis, so that the limit portions can only rotate around the first axis, which is convenient for the operator to adjust the excavation direction of the main machine.

[0010] Furthermore, the ball head portion has an opening, and the limiting portion is formed as a limiting pin that passes through the opening in a radial direction; wherein the spherical portion is provided with an embedding hole that cooperates with the opening, and the limiting portion passes through the opening to extend into the embedding hole.

[0011] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: the ball head portion is provided with an opening, the limiting portion is specifically a limiting pin, the limiting pin extends into the opening, so that the limiting pin is fixed on the ball head portion, simplifying the fixing method of the limiting portion, and facilitating disassembly and installation by the operator; the spherical portion is provided with a matching hole, and the limiting portion is embedded in the matching hole after passing through the opening, so that the spherical portion is connected to the ball head portion through the limiting portion, thereby facilitating the operator to adjust the excavation direction.

[0012] Furthermore, cutting planes are provided on opposite sides of the ball head, the limiting portion is fixed on one side of the spherical portion close to the ball head, the limiting portion is provided with abutting surfaces, and the abutting surfaces and the cutting planes are close to each other.

[0013] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: cutting planes are provided on the opposite sides of the ball head, which cooperate with the abutment surface of the limiting part, thereby limiting the freedom of the ball head within the spherical part, making it convenient for the operator to adjust the excavation direction and operate the ball head to rotate around a specific axis.

[0014] Furthermore, the limiting part is fixed to the spherical part by means of screws; wherein the limiting part is provided with a countersunk hole, the spherical part is provided with a threaded hole, and the screw passes through the countersunk hole and engages with the thread in the threaded hole.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the limiting part is fixed on the spherical part by means of screws, which facilitates the installation and disassembly of the limiting part; at the same time, the limiting part is provided with a countersunk hole, so that when the screw is fixing the limiting part, the screw can be prevented from protruding relative to the surface of the limiting part, thereby avoiding position interference between the screw and the ball head; the spherical part is provided with a threaded hole that cooperates with the countersunk hole, so that after the screw passes through the countersunk hole, it engages with the thread in the threaded hole, thereby fixing the limiting part on the side of the spherical part close to the ball head.

[0016] Furthermore, a plurality of countersunk holes are provided, and the countersunk holes are arranged along the length direction of the limiting portion.

[0017] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the limiting part is provided with a plurality of countersunk holes, and the countersunk holes are dispersedly arranged along the length direction of the limiting part to increase the reliability of fixing the limiting part and the spherical part, and prevent the limiting part from being separated from the spherical part during the construction of the excavation equipment, thereby ensuring the stability of the excavation equipment.

[0018] Furthermore, a sealing member is provided between the ball head portion and the spherical portion, and a medium filling portion is provided between the spherical portion and the sealing member; wherein the medium filling portion is used to fill the medium so as to apply pressure to the sealing member.

[0019] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the seal is arranged between the ball head and the spherical surface, and the seal cooperates with the medium filling part. When the seal is worn, the end of the seal cannot fully contact the ball head, resulting in the seal failing to perform a sealing function. At this time, the medium is filled into the medium filling part. After the medium filling part bulges, pressure is applied to the seal, so that the end of the seal can fully contact the ball head again, so as to protect the ball joint structure and prevent the ball joint structure from getting stuck or damaged.

[0020] Furthermore, at least one of the ball head portion and the spherical portion is provided with a protruding guide block, wherein the guide block is respectively fitted with the ball head portion and the spherical portion.

[0021] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the present invention can limit the large forward and backward displacement or movement of the ball head through the guide block, and the guide block can also provide a guide for the rotation of the ball head and provide a support force for the rotation of the ball head.

[0022] Furthermore, the telescopic protective device can be telescopic and is used to cover the gap at the connection between the first shield body and the second shield body; the first fixing part is arranged at one end of the telescopic protective device, and is used to connect the telescopic protective device with the first shield body; the second fixing part is arranged at the end of the telescopic protective device away from the first fixing part, and is used to connect the telescopic protective device with the second shield body.

[0023] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: in the process of adjusting the excavation direction of the excavation equipment, the telescopic protective device can be extended or shortened by external force, thereby blocking the gap at the connection between the first shield body and the second shield body, preventing mud and gravel from entering and causing jamming at the connection; one end of the telescopic protective device is fixed to the first shield body by a first fixing member, and the other end of the telescopic protective device is fixed to the second shield body by a second fixing member. The fixing method is relatively simple, and it is also more convenient during repair and maintenance, and it is convenient for operators to disassemble and replace.

[0024] Furthermore, the first shield body is a middle shield, and the second shield body is a front shield; or the first shield body is a tail shield, and the second shield body is a middle shield.

[0025] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the ball joint structure in the technical solution of the present invention can be arranged between the front shield and the middle shield, or between the middle shield and the rear shield, so that the ball joint structure has more applicable occasions and is more practical.

[0026] The present invention also provides a tunneling device, which includes a main machine as any of the above-mentioned technical solutions, so it has all the beneficial effects of any of the above-mentioned technical solutions, which will not be repeated here.

[0027] After adopting the technical solution of the present invention, the following technical effects can be achieved:

[0028] (1) The present invention can limit the large forward and backward displacement or movement of the ball head through the guide block, and the guide block can also provide a guide for the rotation of the ball head and provide a support force for the rotation of the ball head;

[0029] (2) The ball head is provided with an opening, and the limiting part is specifically a limiting pin shaft, which extends into the opening so that the limiting pin shaft is fixed on the ball head, simplifying the fixing method of the limiting part and facilitating the disassembly and installation of the operator; the spherical part is provided with a matching hole, and the limiting part is inserted into the matching hole after passing through the opening, so that the spherical part and the ball head are connected through the limiting part, thereby facilitating the operator to adjust the excavation direction;

[0030] (3) The limiting part is fixed to the spherical portion by screws, which is convenient for installing and removing the limiting part. At the same time, the limiting part is provided with a countersunk hole, so that when the screw is fixing the limiting part, it can prevent the screw from protruding relative to the surface of the limiting part, thereby avoiding position interference between the screw and the ball head. The spherical portion is provided with a threaded hole that cooperates with the countersunk hole, so that after the screw passes through the countersunk hole, it engages with the thread in the threaded hole, thereby fixing the limiting part on the side of the spherical portion close to the ball head. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of a main machine of a tunneling device provided by an embodiment of the present invention;

[0032] Figure 2 for Figure 1 Enlarged view of area A in the middle;

[0033] Figure 3 is a second structural schematic diagram of the limiting part;

[0034] Figure 4 for Figure 3 Enlarged view of middle area B;

[0035] Figure 5 It is a schematic diagram of the coordination between the medium filling part and the spherical part.

[0036] Description of reference numerals:

[0037] 100: main machine; 101: first shield body; 102: second shield body; 103: excavation end; 104: driving assembly; 110: ball head; 112: opening; 114: cutting plane; 151: lubricating medium filling part; 120: spherical part; 121: first groove; 122: second embedded groove; 123: embedded hole; 130: sealing member; 140: medium filling part; 141: filling bag; 142: filling pipeline; 143; filling valve; 160: telescopic protection device; 161: first fixing member; 162: second fixing member; 200: guide block; 300: limiting part; 300a: abutting surface; 300b: countersunk hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiment of the present invention provides a mainframe 100 of a tunneling device. The tunneling device of the present invention is specifically a shield machine. The mainframe 100 is the core structure of the tunneling device and is used to realize tunnel excavation. In addition to the mainframe 100, the tunneling device may also include other facilities such as a trolley, a power supply device, and a hydraulic device. Figure 1 As shown, the host 100 of the present invention includes a first shield body 101, a second shield body 102, and a ball joint structure; the ball joint structure includes a ball head 110 arranged on the first shield body 101, and a spherical portion 120 arranged on the second shield body 102 and surrounding and covering the ball head 110, and the ball head 110 can rotate within the spherical portion 120.

[0040] For example, the host 100 is also provided with a limit portion 300, which is used to limit the freedom of the ball head 110; the limit portion 300 is symmetrically arranged on opposite sides of the ball joint structure along the first axis, so that the freedom of the ball head is limited and can only rotate around the first axis.

[0041] For example, the limit part 300 is symmetrically arranged relative to the ball joint structure. When the limit part 300 is relatively arranged along the first axis, the limit part 300 can limit the ball head 110 to rotate only around the first axis, thereby adjusting the excavation direction. Under specific construction conditions, the difficulty of adjusting the excavation direction for the operator is reduced, the operation is more convenient, and it is easy for the operator to operate the ball head to rotate around a specific axis, and avoid shaking, swaying or moving of the ball head 110.

[0042] Specifically, during the excavation process of the main machine 100, the excavation direction is mainly adjusted in the horizontal direction and the vertical direction. Therefore, the direction of the first axis can be the up-and-down vertical direction or the left-and-right horizontal direction.

[0043] For example, the ball head 110 has an opening 112, and the limiting portion 300 is formed as a limiting pin that passes through the opening 112 in a radial direction; wherein the spherical portion 120 is provided with an embedding hole 123 that cooperates with the opening 112, and the limiting portion 300 passes through the opening 112 to extend into the embedding hole 123.

[0044] For example, as shown in the attached Figure 2 As shown, the ball head 110 is provided with an opening 112, and the limiting portion 300 is specifically a limiting pin shaft, which extends into the opening 112, so that the limiting pin shaft is fixed on the ball head 110, which simplifies the fixing method of the limiting portion 300 and is convenient for operators to disassemble and install. The spherical portion 120 is provided with an embedding hole 123, and the embedding hole 123 cooperates with the opening 112. The limiting portion 300 passes through the opening 112 and extends into the embedding hole 123, so that the spherical portion 120 is connected to the ball head 110 through the limiting portion, thereby limiting the freedom of the ball head 110 in the spherical portion 120, so that the operator can operate the ball head to rotate around a specific axis.

[0045] For example, the cutting planes 114 are provided on opposite sides of the ball head 110, the limiting portion 300 is fixed to the side of the ball portion 120 close to the ball head 110, and the limiting portion 300 is provided with abutting surfaces 300a, and the abutting surfaces 300a and the cutting planes 114 are close to each other.

[0046] For example, as shown in the attached Figure 3 and attached Figure 4 As shown, cutting planes 114 are provided on opposite sides of the ball head 110, and the limiting portion 300 is provided with abutment surfaces 300a, which abut against the cutting plane 114. The limiting portion 300 is fixed on the spherical portion 120. In the process of adjusting the excavation direction, the abutment surfaces 300a can abut against the cutting plane 114 to limit the freedom of the ball head 110 in the spherical portion 120, so as to facilitate the operator to operate the ball head to rotate around a specific axis.

[0047] In addition, if the cutting plane 114 is arranged in the horizontal direction, the limiting portion 300 is fixed on the spherical portion 120 in the horizontal direction, and then cooperates with the cutting plane 114, thereby limiting the rotation of the host 100 in the horizontal direction. Similarly, if the cutting plane 114 and the limiting portion 300 are arranged in the vertical direction, the rotation of the host 100 in the vertical direction is limited.

[0048] Specifically, the limiting portion 300 is fixed to the spherical portion 120 by means of screws; wherein the limiting portion 300 is provided with a countersunk hole 300 b, and the spherical portion 120 is provided with a threaded hole, and the screw passes through the countersunk hole 300 b and engages with the thread in the threaded hole.

[0049] Specifically, as attached Figure 4 As shown, a countersunk hole 300b is provided on the limiting portion 300, and a threaded hole is provided on the spherical portion 120. The screw passes through the countersunk hole 300b and meshes with the thread in the threaded hole, so that the limiting portion 300 is fixed on the side of the spherical portion 120 close to the ball head 110. The limiting portion 300 is fixed to the spherical portion 120 by the screw, which is convenient for installing and disassembling the limiting portion 300 and simplifies the fixing method of the limiting portion 300; at the same time, the limiting portion 300 is provided with a countersunk hole 300b, so that when the screw is fixing the limiting portion 300, it can prevent the screw from protruding relative to the surface of the limiting portion 300, thereby avoiding position interference between the screw and the ball head 110, and the spherical portion 120 is provided with a threaded hole that cooperates with the countersunk hole 300b, so that after the screw passes through the countersunk hole 300b, it meshes with the thread in the threaded hole, thereby fixing the limiting portion 300 on the side of the spherical portion 120 close to the ball head 110.

[0050] For example, a plurality of countersunk holes 300 b are provided, and the countersunk holes 300 b are arranged along the length direction of the limiting portion 300 .

[0051] For example, as shown in the attached Figure 4 As shown, the countersunk hole 300b is arranged along the length direction of the limiting portion 300, so that the limiting portion 300 can be provided with a plurality of countersunk holes 300b, thereby increasing the stability of the limiting portion 300 fixed on the spherical portion 120, and preventing the main unit 100 from falling off or loosening during operation, thereby affecting the operation of the main unit 100.

[0052] Specifically, a sealing member 130 is disposed between the ball head portion 110 and the spherical portion 120 , and a medium filling portion 140 is disposed between the spherical portion 120 and the sealing member 130 ; wherein the medium filling portion 140 is used to fill the medium to apply pressure to the sealing member 130 .

[0053] Specifically, as attached Figure 2As shown, there is a gap between the ball head 110 and the spherical surface 120, and the sealing member 130 is disposed in the gap to seal the gap between the ball head 110 and the spherical surface 120. Figure 5 As shown, the medium filling part 140 cooperates with the seal 130, wherein, when the seal 130 is not worn, the end of the seal 130 can contact with the ball head 110. Therefore, when the seal 130 is worn, the end of the seal 130 cannot contact with the ball head 110, resulting in a poor sealing effect. At this time, pressure is applied to the seal 130 through the medium filling part 140 to push the seal 130 and make the end of the seal 130 contact with the ball head 110 again, so that the ball head 110 and the spherical part 120 are sealed, protecting the ball joint structure, thereby preventing external mud and water from entering the main unit 100 of the excavation equipment and avoiding jamming or damage to the ball joint structure.

[0054] Preferably, at least two seals 130 are arranged between the ball head 110 and the spherical portion 120, so that the fitting point between the ball head 110 and the spherical portion 120 can be sealed, thereby improving the sealing effect of the fitting point and preventing foreign matter from entering and causing the ball joint structure to get stuck. Each seal 130 has a corresponding medium filling portion 140. When the seal 130 is worn, the medium filling portion 140 can apply pressure to the seal 130 so that the seal 130 can play a sealing role and avoid the ball joint structure from getting stuck or damaged. Each seal 130 is provided with a corresponding medium filling portion 140, thereby improving the sealing effect of the seal 130. Even if the seal 130 is worn during use, the medium filling portion 140 can apply pressure to the seal to ensure the sealing effect between the spherical portion 120 and the ball head 110.

[0055] In addition, at least two seals 130 are arranged between the ball head 110 and the spherical portion 120; wherein, a medium filling portion 140 is arranged only between part of the gap between the seal 130 and the spherical portion 120, which can reduce the manufacturing cost of the host 100 and reduce the maintenance steps during use, while also ensuring the sealing effect of the seal 130 after wear.

[0056] As attached Figure 5 As shown, the medium filling part 140 includes: a filling bag 141, a filling pipeline 142 and a filling valve 143. The filling pipeline 142 extends into the spherical part 120 and is connected with the filling bag 141. The filling valve 143 controls the on-off of the filling pipeline 142; wherein, the filling pipeline 142 is used to connect with the medium filling source, and then fill the medium into the filling bag 141. After the filling bag 141 swells, pressure is applied to the sealing member 130. The structure of the medium filling part 140 is relatively simple. During the assembly process of the host 100, the assembly is more convenient. At the same time, it is also convenient for the operator to maintain during the maintenance process.

[0057] In addition, the medium here can be a gas medium or a liquid medium, such as air, an inert gas or water.

[0058] In one embodiment of the present invention, the filling bag 141 can be arranged on the spherical portion 120, and the filling bag 141 can be arranged separately from the sealing member 130. Thus, when the sealing member 130 fails, the filling bag 141 can be used to better apply pressure to the sealing member 130 to protect the main machine 100 of the excavation equipment.

[0059] In another example of the present invention, the filling bag 141 and the sealing member 130 can be integrally formed, and the filling bag 141 is formed as a part of the sealing member 130. In other words, the filling bag 141 and the sealing member 130 can be integrated into the same component. For example, an elastic rubber block is used as the sealing member 130, and a cavity or an air bag is provided inside the elastic rubber block, which is used as the filling bag 141. The filling bag 141 and the sealing member 130 are integrally provided, so that the filling bag 141 and the sealing member 130 are integrally formed and form a whole, which can facilitate the processing and molding of the filling bag 141 and the sealing member 130, and also facilitate the installation and assembly of the filling bag 141 and the sealing member 130.

[0060] Preferably, a first groove 121 is provided on a side of the spherical portion 120 facing the ball head 110 , and the filling bag 141 is provided in the first groove 121 . At least a portion of the sealing member 130 is filled in the first groove 121 and covers the filling bag 141 .

[0061] Supplementary instructions, as attached Figure 5 As shown, the spherical portion 120 is provided with a first groove 121, and the first groove 121 is arranged toward the ball head 110, so that the sealing member 130 and the filling bag 141 are arranged in the first groove 121, which simplifies the fixing method of the sealing member 130 and the filling bag 141. At the same time, the first groove 121 is processed on the spherical portion 120, and the process is simpler and convenient for processing and production.

[0062] For example, a lubricating medium filling portion 151 is further provided between the ball head portion 110 and the ball portion 120, and the lubricating medium filling portion 151 is used to fill the lubricating medium between the ball head portion 110 and the ball portion 120. The lubricating medium may be solid grease, an oily liquid lubricating medium, or an aqueous liquid lubricating medium. For example, the lubricating medium may be grease or vaseline.

[0063] The lubricating medium can reduce the friction between the ball head 110 and the spherical surface 120, thereby extending the service life of the ball joint structure. At the same time, the lubricating medium can reduce the temperature between the ball head 110 and the spherical surface 120, taking away the heat generated by friction, and the lubricating medium can prevent rust between the ball head 110 and the spherical surface 120, thereby increasing the service life of the ball joint structure.

[0064] For example, the central axis of the ball head 110 coincides with the central axis of the host 100 , and the central point of the ball head 110 coincides with the central point of the spherical portion 120 .

[0065] The central axis of the ball head 110 coincides with the central axis of the main machine 100, making the main machine 100 of the excavation equipment more stable when adjusting the excavation direction, reducing the error of the main machine 100 of the excavation equipment when adjusting the excavation direction; the center point of the ball head 110 coincides with the center point of the spherical portion 120, making the ball joint structure more stable, convenient for the operator to control, and improving the stability of the main machine 100.

[0066] For example, a protruding guide block 200 is disposed on at least one of the ball head portion 110 and the spherical portion 120 ; wherein the guide block 200 is respectively fitted with the ball head portion 110 and the spherical portion 120 .

[0067] For example, as shown in the attached Figure 2 As shown, the guide block 200 is arranged between the ball head 110 and the spherical portion 120. The guide block 200 limits the ball head 110 from a large forward and backward displacement or movement. The guide block 200 can also provide a guide for the rotation of the ball head 110 and provide support for the rotation of the ball head 100.

[0068] In addition, the ball head 110 has a first embedding groove, the guide block 200 is disposed in the first embedding groove, and protrudes from the first embedding groove toward the spherical portion 120; or, as shown in the attached Figure 2 As shown, the spherical portion 120 has a second embedding groove 122, and the guide block 200 is disposed in the second embedding groove 122 and protrudes from the second embedding groove 122 toward the ball head 110 to simplify the fixing method of the guide block 200 and facilitate installation and disassembly.

[0069] For example, as shown in the attached Figure 2 As shown, a seal 130 is provided between the ball head 110 and the spherical portion 120 to seal the gap between the ball head 110 and the spherical portion 120, thereby preventing mud, sand and gravel from entering. There are at least two guide blocks 200, and the guide blocks 200 are symmetrically arranged on opposite sides of the seal 130.

[0070] It should be noted that each guide block 200 may include only one guide component, or may be composed of multiple guide components to form an integral guide block 200. For example, a guide block 200 may be formed as a guide ring disposed around the circumference of the host 100, or a guide block 200 may be composed of multiple guide blocks disposed around the circumference of the host 100 and spaced apart.

[0071] The guide portions 200 are disposed on opposite sides of the seal 130, so that the ball head 110 and the spherical portion 120 contact each other through the guide blocks 200, further effectively limiting the large forward and backward displacement or movement of the ball head 110, and providing a more stable support force for the rotation of the ball head 110. For example, the ball head 110 is an outer convex arc surface, and the spherical portion 120 is an inner concave arc surface.

[0072] For example, the main machine 100 has an excavation end 103, a seal 130 is arranged between the ball head 110 and the spherical portion 120, the ball joint structure has a distal end away from the excavation end 103, and the guide block 200 is arranged between the seal 130 and the distal end.

[0073] For example, as shown in the attached Figure 1 As shown, the main machine 100 is provided with an excavation end 103, as shown in the attached Figure 5 As shown, the spherical proximal end 120a of the spherical portion 120 is a concave arc surface, which is compatible with the convex arc surface of the ball head 110, so that the spherical proximal end 120a can stop the ball head 110 and prevent the ball head 110 and the spherical portion 120 from separating from each other, thereby facilitating the assembly of the ball head 110 and the spherical portion 120 together. The spherical distal end 120b of the spherical portion 120 is a concave arc surface, which is convenient for processing the spherical portion 120. At the same time, the spherical distal end 120b is a concave arc surface, so that the ball head 110 can be embedded in the spherical portion 120, making the ball joint structure more reasonable.

[0074] For example, the ball head 110 is an outer convex arc surface, and the spherical portion 120 is an inner concave arc surface, which is easy to produce and process, has higher processing efficiency, and is more convenient to disassemble.

[0075] For example, the main unit 100 has an excavation end 103, the spherical portion 120 has a spherical proximal end 120a close to the excavation end 103, and a spherical distal end 120b opposite to the spherical proximal end 120a and away from the excavation end 103; the ball head 110 is an outer convex arc surface, the spherical proximal end 120a is an inner concave arc surface adapted to the outer convex arc surface, and the spherical distal end 120b is an inner concave arc surface.

[0076] For example, as shown in the attached Figure 1 As shown, the main machine 100 is provided with an excavation end 103, as shown in the attached Figure 2As shown, the spherical proximal end 120a of the spherical portion 120 is a concave arc surface, which is compatible with the convex arc surface of the ball head 110, so that the spherical proximal end 120a can stop the ball head 110 and prevent the ball head 110 and the spherical portion 120 from separating from each other, thereby facilitating the assembly of the ball head 110 and the spherical portion 120 together. The spherical distal end 120b of the spherical portion 120 is a concave arc surface, which is convenient for processing the spherical portion 120. At the same time, the spherical distal end 120b is a concave arc surface, so that the ball head 110 can be embedded in the spherical portion 120, making the ball joint structure more reasonable.

[0077] Specifically, the guide block 200 is made of at least one of the following materials or a combination thereof: metal, polymer, inorganic non-metal. Specifically, the metal may be silver or copper; the polymer may be polyester, nylon, acrylic, chloroprene, vinylon, spandex; and the inorganic non-metal may be graphite.

[0078] Among them, synthetic fibers such as polyester and nylon make the guide block 200 more wear-resistant, and synthetic fibers are more corrosion-resistant, which makes the service life of the guide block 200 longer and does not require frequent replacement by operators.

[0079] The guide block 200 is preferably made of nylon fabric, ie, nylon.

[0080] Specifically, the host 100 also includes: a telescopic protective device 160, which can be telescopic and used to cover the gap at the connection between the first shield body 101 and the second shield body 102; a first fixing member 161 and a second fixing member 162, wherein the first fixing member 161 is disposed at one end of the telescopic protective device 160 and is used to connect the telescopic protective device 160 to the first shield body 101; the second fixing member 162 is disposed at one end of the telescopic protective device 160 away from the first fixing member 161 and is used to connect the telescopic protective device 160 to the second shield body 102.

[0081] Specifically, as attached Figure 2 As shown, when the main machine 100 adjusts the excavation direction, the gap at the connection between the first shield body 101 and the second shield body 102 will change with the adjustment direction, so that the telescopic protection device 160 is extended or shortened by external force, thereby adapting to the gap at the connection between the first shield body 101 and the second shield body 102, thereby preventing mud and gravel from entering the gap at the connection, preventing external mud and water from entering the main machine 100 of the excavation equipment, and avoiding damage to the main machine 100; one end of the telescopic protection device 160 is fixed to the first shield body 101 by the first fixing member 161, and the other end of the telescopic protection device 160 is fixed to the second shield body 102 by the second fixing member 162. The fixing method is relatively simple and more convenient during repair and maintenance, which is convenient for operators to disassemble and replace.

[0082] Preferably, the first fixing member 161 is provided with a through hole, the first shield body 101 is provided with a threaded hole that cooperates with the through hole of the first fixing member 161, the through hole and the threaded hole overlap with each other, the screw passes through the through hole and engages with the thread in the threaded hole, so that one end of the telescopic protection device 160 is fixed to the first shield body 101, and the second fixing member 162 is also provided with a through hole, the second shield body 102 is provided with a threaded hole that cooperates with the through hole of the second fixing member 162, the through hole and the threaded hole overlap with each other, the screw passes through the through hole and engages with the thread in the threaded hole, so that the other end of the telescopic protection device 160 is fixed to the second shield body 102.

[0083] Preferably, the telescopic protection device 160 can be made of a wear-resistant bellows, which has strong wear resistance and protects the gap at the connection between the first shield body 101 and the second shield body 102 to prevent mud, sand and gravel from entering the connection.

[0084] For example, the host 100 is further provided with a plurality of drive components 104 which are dispersedly arranged axially around the host 100 , and the drive components 104 are used to cooperate with the ball joint structure to drive the host 100 to turn.

[0085] For example, as shown in the attached Figure 1 As shown, the host 100 is provided with a driving component 104, and the driving component 104 is distributed along the axial direction of the host 100. When the host 100 turns, the driving components 104 need to cooperate with each other. There are multiple driving components 104. Through the different elongation amounts of the driving components 104, the spherical part 120 is driven to rotate, thereby driving the host 100 to turn.

[0086] For example, the first shield body 101 is a middle shield, and the second shield body 102 is a front shield; or the first shield body 101 is a rear shield, and the second shield body 102 is a middle shield.

[0087] For example, the ball joint structure in the technical solution of the present invention can be arranged between the front shield and the middle shield, and can also be arranged between the middle shield and the rear shield, so that the ball joint structure has more applicable occasions and is more practical.

[0088] The present invention further provides a tunneling device, which includes a main machine 100 and thus has all the beneficial effects of the above technical solution, which will not be described in detail herein.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A host, characterized in that: The host (100) comprises a first shield body (101), a second shield body (102), and is provided with a ball joint structure; the ball joint structure comprises a ball head (110) arranged on the first shield body (101), and a spherical portion (120) arranged on the second shield body (102) and surrounding and covering the ball head (110); the ball head (110) is capable of rotating within the spherical portion (120).

2. The host according to claim 1, characterized in that: The host (100) is further provided with a limiting portion (300), and the limiting portion (300) is used to limit the degree of freedom of the ball head (110) within the spherical portion (120); the limiting portion (300) is symmetrically arranged along a first axis on opposite sides of the ball joint structure, so that the degree of freedom of the ball head (110) is limited and can only rotate around the first axis.

3. The host according to claim 2, characterized in that: The ball head portion (110) has an opening (112), and the limiting portion (300) is formed as a limiting pin that passes through the opening (112) in a radial direction; wherein the spherical portion (120) is provided with an embedding hole (123) that cooperates with the opening (112), and the limiting portion (300) passes through the opening (112) to extend into the embedding hole (123).

4. The host according to claim 2, characterized in that: Cutting planes (114) are provided on opposite sides of the ball head (110); the limiting portion (300) is fixed to a side of the spherical portion (120) close to the ball head (110); the limiting portion (300) is provided with a supporting surface (300a); and the supporting surface (300a) and the cutting plane (114) are close to each other.

5. The host according to claim 4, characterized in that: The limiting portion (300) is fixed to the spherical portion (120) by means of screws; wherein the limiting portion (300) is provided with a countersunk hole (300b), the spherical portion (120) is provided with a threaded hole, and the screw passes through the countersunk hole (300b) and meshes with the thread in the threaded hole.

6. The host according to claim 5, characterized in that: A plurality of the countersunk holes (300b) are provided, and the countersunk holes (300b) are arranged along the length direction of the limiting portion (300).

7. The tunneling equipment according to any one of claims 1 to 6, characterized in that: A sealing member (130) is provided between the ball head portion (110) and the spherical portion (120), and a medium filling portion (140) is provided between the spherical portion (120) and the sealing member (130); wherein the medium filling portion (140) is used to fill a medium so as to apply pressure to the sealing member (130).

8. The host according to any one of claims 1 to 6, characterized in that: A protruding guide block (200) is provided on at least one of the ball head portion (110) and the spherical portion (120); wherein the guide block (200) is respectively fitted with the ball head portion (110) and the spherical portion (120).

9. The host according to any one of claims 1 to 6, characterized in that: The host (100) also includes: A telescopic protective device (160), the telescopic protective device (160) being capable of being telescopic and used to cover a gap at a connection between the first shield body (101) and the second shield body (102); a first fixing member (161), the first fixing member (161) being arranged at one end of the telescopic protection device (160) and being used for connecting the telescopic protection device (160) with the first shield body (101); A second fixing member (162), the second fixing member (162) is arranged at one end of the telescopic protection device (160) away from the first fixing member (161), and is used to connect the telescopic protection device (160) with the second shield body (102).

10. A tunneling device, characterized in that: The excavation equipment comprises a main machine according to any one of claims 1-9.

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