Main machine of tunneling equipment and tunneling equipment

Abstract

The utility model 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 surrounds and wraps the spherical head part; a sealing piece is arranged between the spherical head part and the spherical surface part, and a medium filling part is arranged between the spherical surface part and the sealing piece; wherein the medium filling part is used for filling a medium so as to apply pressure to the sealing element. Under the condition that the sealing piece is abraded, the end portion of the sealing piece cannot make full contact with the ball head portion, so that the sealing piece cannot achieve the sealing effect, at the moment, after a medium is filled into the medium filling portion and the medium filling portion bulges, pressure is applied to the sealing piece, the end portion of the sealing piece can make full contact with the ball head portion again, muddy water is prevented from entering, and the service life of the sealing piece is prolonged. The host is prevented from being damaged.

Description

Technical Field

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

[0002] During tunnel construction, excavation is performed using tunneling equipment, primarily shield machines or pipe jacking machines. For example, a shield machine requires turning while traveling. Therefore, a turning mechanism is required between the front and middle shields, as well as between the middle and rear shields. This mechanism typically includes multiple cylinders and an articulated structure that flexibly connects the front and middle shields, or the middle and rear shields. This allows the cylinders to be controlled to extend to different lengths, depending on the desired turning angle.

[0003] The articulated structure can be a plane articulated structure or a ball-jointed structure. Among them, for certain specific excavation scenarios, small and medium-sized shield machines (hereinafter referred to as "small shields") are required. The advantages of small shields are: small turning radius, flexible use, and the ability to make sharp turns. Therefore, they can replace drag tubes and be used in a variety of excavation scenarios with small turning radius. The small shield is compact in size, and its diameter is generally between 2 meters and 4.2 meters. Therefore, the ball-jointed structure that can turn flexibly is the key structure to ensure that the small shield can realize its sharp turn excavation function.

[0004] Articulated joints require seals, which can easily wear out over extended periods of operation. Wear and failure of these seals can cause muddy water to enter the mainframe of the tunneling equipment, potentially damaging it. Therefore, it's crucial to prevent damage to the mainframe from seal wear in ball-jointed joints. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a main unit of a tunneling equipment, which includes a first shield body, a second shield body, and a ball hinge structure; the ball hinge 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 portion; a sealing member is arranged between the ball head portion and the spherical portion portion, and a medium filling portion is arranged between the spherical portion portion and the sealing member; wherein the medium filling portion is used to fill the medium to apply pressure to the sealing member.

[0006] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the seal is arranged between the ball head and the spherical surface. 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 to protect the ball hinge structure, prevent external mud and water from entering the main unit of the excavation equipment, and avoid damage to the main unit.

[0007] Furthermore, at least two sealing members are provided between the ball head portion and the spherical portion; wherein a corresponding medium filling portion is provided between the gap between each sealing member and the spherical portion.

[0008] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: at least two seals are provided between the ball head and the spherical portion, and each seal is provided with a corresponding medium filling portion, so that the mating point of the ball head and the spherical portion can be sealed. When the seal is worn, the medium filling portion can apply pressure to the seal, so that the seal can perform its sealing function, preventing external muddy water from entering the main unit of the tunneling equipment and avoiding damage to the main unit. Each seal is provided with a corresponding medium filling portion, which improves the sealing effect of the seal. Even if the seal is worn during use, the medium filling portion can apply pressure to the seal to ensure the sealing effect between the spherical portion and the ball head.

[0009] Furthermore, at least two sealing members are provided between the ball head portion and the spherical portion; wherein, the medium filling portion is provided only between the gaps between some of the sealing members and the spherical portion.

[0010] Compared to the prior art, this technical solution achieves the following technical benefits: after a seal is worn, it cooperates with the corresponding medium filling portion, allowing the seal end to fully re-engage the ball head, protecting the ball joint structure. Only some seals are equipped with corresponding medium filling portions, which can reduce the manufacturing cost of the tunneling equipment and reduce maintenance steps during use, while also ensuring the sealing effectiveness of the seal after wear. Furthermore, the medium filling portion includes a filling bladder and a filling pipeline that extends into the ball portion and connects to the filling bladder; the filling pipeline is connected to a medium filling source. Compared to the prior art, this technical solution achieves the following technical benefits: one end of the filling pipeline is connected to the medium filling source, and the other end of the filling pipeline is connected to the filling bladder, thereby filling the filling bladder with medium. When the filling bladder swells, it applies pressure to the seal. The relatively simple structure of the medium filling portion makes assembly of the tunneling equipment more convenient and also facilitates maintenance for operators.

[0011] Furthermore, the filling bag is provided on the spherical portion and is separately provided relative to the sealing member; or, the filling bag and the sealing member are integrally formed and form a part of the sealing member.

[0012] Separately providing the filling bladder and seal allows for better pressure application to the seal in the event of seal failure, protecting the mainframe of the tunneling equipment. The filling bladder and seal are integrally molded, facilitating both their processing and assembly. Furthermore, the medium filling unit includes a filling valve, located on the filling pipeline, for controlling the flow of the filling pipeline.

[0013] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the filling valve controls the on-off of the filling pipeline. After the seal is worn, the filling valve opens, allowing the medium in the medium filling source to flow into the filling bag through the filling pipeline, so that the filling bag bulges. After the filling bag bulges, the filling valve closes; the filling valve is set to facilitate operator control.

[0014] Furthermore, a first groove is provided on a side of the spherical portion facing the ball head, the filling bag is provided in the first groove, and at least a portion of the sealing member is filled in the first groove and covers the filling bag.

[0015] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the spherical portion is provided with a first groove, and the first groove is arranged toward the ball head, so that the seal and the filling bag are arranged in the first groove, which simplifies the fixing method of the seal and the filling bag. At the same time, the first groove is processed on the spherical portion, and the process is simpler and convenient for processing and production.

[0016] Furthermore, a lubricating medium filling portion is provided between the ball head portion and the spherical portion, and the lubricating medium filling portion is used to fill the lubricating medium between the ball head portion and the spherical portion.

[0017] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the lubricating medium filling part fills the lubricating medium into the space between the ball head and the spherical surface, and the lubricating medium can reduce the friction between the ball head and the spherical surface, 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 and the spherical surface, and take away the heat generated by friction. The lubricating medium can prevent rust between the ball head and the spherical surface, thereby improving the service life of the ball joint structure.

[0018] Furthermore, the central axis of the ball head coincides with the central axis of the host, and the center point of the ball head coincides with the center point of the spherical portion.

[0019] Compared with the existing technology, the technical effects achieved by adopting this technical solution are: the central axis of the ball head coincides with the central axis of the main machine, making the main machine of the tunneling equipment more stable when adjusting the tunneling direction, avoiding the shaking of the main machine of the tunneling equipment; the center point of the ball head coincides with the center point of the spherical part, making the ball joint structure more stable, reducing the error when the main machine of the tunneling equipment adjusts the direction, facilitating the operator's control, and improving the stability of the main machine of the tunneling equipment.

[0020] 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.

[0021] Compared with the existing technology, the technical effect achieved by adopting this technical solution is: the ball hinge structure in the technical solution provided by the utility model can be set between the front shield and the middle shield, and can also be set between the middle shield and the tail shield, so that the ball hinge structure has more applicable occasions and is more practical.

[0022] The present invention also provides a tunneling device, which includes a main machine as in any of the above technical solutions. Therefore, it has all the beneficial effects of any of the above technical solutions, which will not be repeated here.

[0023] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0024] (1) The seal is provided between the ball head and the spherical portion. The seal cooperates with the medium filling portion. When the seal is worn, the end of the seal cannot fully contact the ball head, resulting in the seal failing to perform its sealing function. At this time, the medium is filled into the medium filling portion. After the medium filling portion bulges, pressure is applied to the seal so that the end of the seal can fully contact the ball head again, thereby protecting the ball hinge structure and preventing external mud and water from entering the mainframe of the tunneling equipment, thereby avoiding damage to the mainframe.

[0025] (2) At least two seals are provided between the ball head and the spherical portion, and each seal is provided with a corresponding medium filling portion, so that the fitting portion between the ball head and the spherical portion can be sealed. When the seal is worn, the medium filling portion can apply pressure to the seal, so that the seal can play a sealing role, preventing external mud and water from entering the main unit of the tunneling equipment and avoiding damage to the main unit. Each seal is provided with a corresponding medium filling portion, which improves the sealing effect of the seal. Even if the seal is worn during use, the medium filling portion can apply pressure to the seal to ensure the sealing effect between the spherical portion and the ball head;

[0026] (3) The spherical portion is provided with a first groove, which is arranged toward the ball head, so that the seal and the filling bag are arranged in the first groove, which simplifies the fixing method of the seal and the filling bag. At the same time, processing the first groove on the spherical portion makes the process simpler and facilitates processing and production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a mainframe of a tunneling device provided by an embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Enlarged view of middle area A;

[0029] Figure 3 Schematic diagram of the fit between the spherical portion and the seal.

[0030] Description of reference numerals:

[0031] 100: Main unit; 101: First shield body; 102: Second shield body; 110: Ball head; 120: Spherical portion; 121: First groove; 130: Sealing element; 140: Medium filling portion; 141: Filling bag; 142: Filling pipeline; 143: Filling valve; 151: Lubricating medium filling portion; 160: Telescopic protective device; 161: First fixing element; 162: Second fixing element. DETAILED DESCRIPTION

[0032] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0033] The present invention provides a main unit 100 of a tunneling device. The tunneling device of the present invention is specifically a shield machine, and the main unit 100 is the core structure of the tunneling device, which is used to realize tunnel excavation. In addition to the main unit 100, the tunneling device may also include other facilities such as a trolley, a power supply device, a hydraulic device, etc. The main unit 100 of the present invention includes a first shield body 101 and a second shield body 102, and is provided with a ball hinge structure, the ball hinge structure includes a ball head 110 provided on the first shield body 101, and a spherical portion 120 provided on the second shield body 102 and surrounding and covering the ball head 110, a sealing member 130 is provided between the ball head 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 the medium to apply pressure to the sealing member 130.

[0034] Specifically, the host 100 is as shown in the attached Figure 1 As shown, the first shield body 101 and the second shield body 102 are connected. Figure 2As shown, the host 100 is provided with a ball joint structure, which includes a ball head 110 provided on the first shield body 101 and a spherical portion 120 provided on the second shield body 102. There is a gap between the ball head 110 and the spherical portion 120. A sealing member 130 is provided in the gap to seal the gap between the ball head 110 and the spherical portion 120. The medium filling portion 140 cooperates with the sealing member 130. When the sealing member 130 is not worn, the end of the sealing member 130 can be aligned with the ball head 110. Therefore, when the seal 130 is worn, the end of the seal 130 cannot contact the ball head 110, resulting in 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 the ball head 110 again, so that the ball head 110 and the spherical part 120 are sealed, protecting the ball hinge structure, thereby preventing external mud and water from entering the main unit 100 of the excavation equipment and avoiding damage to the main unit.

[0035] For example, at least two sealing members 130 are provided between the ball head portion 110 and the spherical portion 120 ; wherein a corresponding medium filling portion 140 is provided between the gap between each sealing member 130 and the spherical portion 120 .

[0036] For example, 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, preventing foreign matter from entering, and preventing damage to the main unit 100; each seal 130 has a corresponding medium filling part 140, and the seal 130 and the medium filling part 140 cooperate with each other. When the seal 130 is worn, the medium filling part 140 can apply pressure to the seal 130, so that the seal 130 can play a sealing role, preventing external mud and water from entering the main unit 100 of the excavation equipment, and avoiding damage to the main unit. Each seal 130 is provided with a corresponding medium filling part 140, which improves the sealing effect of the seal 130. Even if the seal 130 is worn during use, the medium filling part 140 can apply pressure to the seal to ensure the sealing effect between the spherical portion 120 and the ball head 110.

[0037] Specifically, at least two sealing members 130 are provided between the ball head portion 110 and the spherical portion 120 ; wherein, the medium filling portion 140 is provided only between a portion of the gaps between the sealing members 130 and the spherical portion 120 .

[0038] Specifically, after the seal 130 is worn, the seal 130 cooperates with the corresponding medium filling portion 140 so that the end of the seal 130 can fully contact the ball head 110 again to protect the ball joint structure. Only some of the seals 130 are provided with corresponding medium filling portions 140, 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. Specifically, the medium filling portion 140 includes: a filling bag 141 and a filling pipeline 142. The filling pipeline 142 extends into the spherical portion 120 and is connected to the filling bag 141. The filling pipeline 142 is used to connect to the medium filling source.

[0039] Specifically, as attached Figure 2 As shown, the medium filling part 140 includes a filling bag 141 and a filling pipe 142. One end of the filling pipe 142 is connected to the medium filling source, and the other end of the filling pipe 142 is connected to the filling bag 141, and then the medium is filled 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 main unit 100, the assembly is simpler. At the same time, it is also convenient for the operator to maintain during the maintenance process.

[0040] In addition, the medium here can be a gas medium or a liquid medium, such as air, inert gas or water.

[0041] In one embodiment of the present invention, the filling bag 141 can be provided on the spherical portion 120 and can be provided separately from the sealing member 130. This allows the filling bag 141 to better apply pressure to the sealing member 130 in the event of a failure of the sealing member 130, thereby protecting the main body 100 of the excavation equipment.

[0042] In another embodiment of the present invention, the filling sac 141 can be integrally formed with the sealing member 130, and the filling sac 141 can be formed as a part of the sealing member 130. In other words, the filling sac 141 and the sealing member 130 can be integrated into the same component. For example, an elastic rubber block can be used as the sealing member 130, and a cavity or airbag can be provided inside the elastic rubber block to serve as the filling sac 141. The filling sac 141 and the sealing member 130 are integrally provided, so that the filling sac 141 and the sealing member 130 are integrally formed to form a whole. This can facilitate the processing and forming of the filling sac 141 and the sealing member 130, as well as the installation and assembly of the filling sac 141 and the sealing member 130.

[0043] For example, the medium filling portion 140 further includes a filling valve 143 . The filling valve 143 is provided on the filling pipeline 142 . The filling valve 143 is used to control the on / off state of the filling pipeline 142 .

[0044] For example, the filling valve 143 controls the on-off of the filling pipeline 142. After the seal 130 is worn, the filling valve 143 is opened, allowing the medium in the medium filling source to flow into the filling bag 141 through the filling pipeline 142, so that the filling bag 141 swells. After the filling bag 141 swells, the filling valve 143 is closed; the filling valve 143 is set to facilitate operator control.

[0045] Specifically, a first groove 121 is provided on the 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 .

[0046] Specifically, as attached Figure 3 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, processing the first groove 121 on the spherical portion 120 makes the process simpler and facilitates processing and production.

[0047] For example, a lubricant filling portion 151 is provided between the ball head portion 110 and the spherical portion 120. The lubricant filling portion 151 is used to fill the space between the ball head portion 110 and the spherical portion 120 with a lubricant. The lubricant can be a solid grease, an oily liquid lubricant, or an aqueous liquid lubricant. For example, the lubricant can be grease or vaseline.

[0048] For example, as shown in the attached Figure 2 As shown, a lubricating medium filling portion 151 is provided between the ball head portion 110 and the spherical portion 120. The lubricating medium filling portion 151 fills the lubricating medium between the ball head portion 110 and the spherical portion 120. The lubricating medium can reduce the friction between the ball head portion 110 and the spherical portion 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 portion 110 and the spherical portion 120, and take away the heat generated by friction. Moreover, the lubricating medium can prevent rust between the ball head portion 110 and the spherical portion 120, thereby improving the service life of the ball joint structure.

[0049] For example, the central axis of the ball head 110 coincides with the central axis of the host 100 , and the center point of the ball head 110 coincides with the center point of the spherical portion 120 .

[0050] For example, the central axis of the ball head 110 coincides with the central axis of the main unit 100, making the main unit 100 of the tunneling equipment more stable when adjusting the tunneling direction, reducing the error of the main unit 100 of the tunneling equipment when adjusting the tunneling 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, facilitating operator control, and improving the stability of the main unit 100.

[0051] 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 is provided at one end of the telescopic protective device 160, used to connect the telescopic protective device 160 to the first shield body 101; a second fixing member 162 is provided at an end of the telescopic protective device 160 away from the first fixing member 161, used to connect the telescopic protective device 160 to the second shield body 102.

[0052] Specifically, as attached Figure 2 As shown, when the main body 100 of the tunneling equipment adjusts the tunneling 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 protective 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, sand and gravel from entering the gap at the connection, preventing external mud and water from entering the main body 100 of the tunneling equipment, and avoiding damage to the main body 100; one end of the telescopic protective device 160 is fixed to the first shield body 101 by a first fixing member 161, and the other end of the telescopic protective device 160 is fixed to the second shield body 102 by a second fixing member 162. The fixing method is relatively simple and more convenient during repair and maintenance, making it easy for operators to disassemble and replace it.

[0053] Preferably, the first fixing member 161 is provided with a through hole, and 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 coincide with each other, and the screw passes through the through hole and engages with the thread in the threaded hole, so that one end of the telescopic protective device 160 is fixed to the first shield body 101, and the second fixing member 162 is also provided with a through hole, and 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 coincide with each other, and the screw passes through the through hole and engages with the thread in the threaded hole, so that the other end of the telescopic protective device 160 is fixed to the second shield body 102.

[0054] Preferably, the telescopic protection device 160 can be made of a wear-resistant bellows, which has strong wear resistance, so that the wear-resistant bellows can protect 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.

[0055] 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 tail shield, and the second shield body 102 is a middle shield.

[0056] For example, the ball hinge 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 hinge structure has more applicable occasions and is more practical.

[0057] 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 various embodiments of the present invention.

Claims

1. A main engine of a tunneling device, 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); a sealing member (130) is provided between the ball head (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 for filling a medium to apply pressure to the sealing member (130).

2. The host according to claim 1, wherein: At least two sealing members (130) are provided between the ball head portion (110) and the spherical portion (120); wherein a corresponding medium filling portion (140) is provided between the gap between each sealing member (130) and the spherical portion (120); or, At least two sealing members (130) are provided between the ball head portion (110) and the spherical portion (120); wherein the medium filling portion (140) is provided only between a portion of the gaps between the sealing members (130) and the spherical portion (120).

3. The host according to any one of claims 1-2, characterized in that The medium filling portion (140) includes: Filling bag (141); a filling pipeline (142), the filling pipeline (142) extending into the spherical portion (120) and communicating with the filling bag (141); The filling pipeline (142) is used to be connected to a medium filling source.

4. The host according to claim 3, characterized in that The filling bag (141) is provided on the spherical portion (120) and is separately provided relative to the sealing member (130); or, The filling bag (141) is integrally formed with the sealing member (130) and forms a part of the sealing member (130).

5. The host according to claim 3, characterized in that: The medium filling portion (140) further includes: A filling valve (143) is provided on the filling pipeline (142), and the filling valve (143) is used to control the on-off of the filling pipeline (142).

6. The host according to claim 3, characterized in that A first groove (121) is provided on the side of the spherical portion (120) facing the ball head (110), the filling bag (141) is provided in the first groove (121), and at least a portion of the sealing member (130) is filled in the first groove (121) and covers the filling bag (141).

7. The host according to any one of claims 1-2, characterized in that: A lubricating medium filling portion (151) is further provided between the ball head portion (110) and the spherical portion (120), and the lubricating medium filling portion (151) is used to fill the lubricating medium between the ball head portion (110) and the spherical portion (120).

8. The host according to any one of claims 1-2, characterized in that: The central axis of the ball head (110) coincides with the central axis of the host (100), and the center point of the ball head (110) coincides with the center point of the spherical portion (120).

9. The host according to any one of claims 1-2, characterized in that: 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 tail shield, and the second shield body (102) is a middle shield.

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

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