CN211951721U - Pipeline connecting device and excavator - Google Patents

Abstract

The utility model provides a pipe connection device and excavator relates to the pipe connection technology field. The pipe connection device includes: pipeline connecting piece and mounting, pipeline connecting piece is provided with the lumen of through type, pipeline connecting piece is used for passing the structure, pipeline connecting piece's both ends are used for connecting line, the lumen can communicate with the pipeline, the mounting is used for connecting pipeline connecting piece with the structure. The excavator comprises the pipeline connecting device. The pipeline connecting device is used for connecting the pipeline and the structural part, so that friction or impact between the pipeline and the structural part is reduced, and abrasion of the pipeline is reduced.

Description

Pipeline connecting device and excavator

Technical Field

The utility model belongs to the technical field of the tube coupling technique and specifically relates to a tube coupling device and excavator is related to.

Background

At present, in mechanical equipment (such as an excavator), a pipeline is generally arranged, and the pipeline is used for liquid to flow. However, during the assembly of the mechanical equipment, some of the pipes need to pass through some structural members (e.g., plates or blocks). In one arrangement, the tubing is routed around the outside edge of the structure; in another arrangement, a larger hole is formed in the structural member and the pipe is passed through the hole in the structural member.

However, no matter which arrangement method is adopted, friction or impact is generated between the structural part and the pipeline in the operation process of the mechanical equipment, so that the pipeline is easy to wear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pipeline connecting device and excavator to solve the pipeline that exists among the prior art easily because of and the structure between the technical problem that friction or striking lead to the pipeline wearing and tearing.

The technical scheme of the utility model is realized like this:

a pipe coupling device comprising: pipeline connecting piece and mounting, pipeline connecting piece is provided with the lumen of through type, pipeline connecting piece is used for passing the structure, pipeline connecting piece's both ends are used for connecting line, the lumen can with the pipeline intercommunication, the mounting is used for connecting pipeline connecting piece with the structure.

In a possible embodiment, the pipe connection is provided with an external thread, the pipe connection is sheathed with two fixing parts, two of which are used for clamping the structural part, at least one of which is provided with an internal thread.

In a possible implementation, two of the fixing members are provided with internal threads, the pipeline connecting piece comprises a first section and a second section, the two ends of the first section are provided with the second sections respectively, and the external threads are arranged on the second sections.

In one possible embodiment, the outer diameter of the first section is equal to or greater than the outer diameter of the second section.

In a possible embodiment, the pipe connector further comprises a gasket, wherein the gasket is sleeved on the pipe connector, and the gasket is positioned on one side, facing the structural part, of the fixing part.

In a possible embodiment, the two ends of the pipeline connecting piece are connected with pipeline joints, and the pipeline connecting piece is connected with the pipeline through the pipeline joints.

In one possible embodiment, the line connection is a hard pipe connection or a hose connection.

In a possible embodiment, the end of the tube cavity is provided with a first accommodating cavity, and the first accommodating cavity is matched with a sealing piece of the hard tube joint.

In a possible embodiment, the diameter of the first housing cavity is greater than the diameter of the lumen.

In a possible embodiment, the end of the tube cavity is provided with a second receiving cavity, which is matched with the sealing element of the hose connector.

In a possible implementation, the second accommodating cavity is in a circular truncated cone shape, and the diameter of the second accommodating cavity is gradually reduced from outside to inside.

In a possible implementation, when the pipeline connecting piece is provided with a first accommodating cavity and a second accommodating cavity at the same time, the second accommodating cavity is located outside the first accommodating cavity.

In a possible embodiment, the minimum diameter of the second housing cavity is equal to or greater than the diameter of the first housing cavity.

The excavator comprises a structural part and the pipeline connecting device according to the technical scheme, wherein the structural part is provided with a through hole, the pipeline connecting device penetrates through the through hole, and two ends, extending out of the through hole, of the pipeline connecting device are respectively connected with the pipeline.

In a possible embodiment, the length of the first section of the pipe connection is smaller than the length of the through hole.

Compared with the prior art, the pipeline connecting device at least has the following advantages:

pipeline connecting device be applied to and be connected pipeline and structure. In the using process, the pipeline connecting piece in the pipeline connecting device penetrates through the structural piece, so that two ends of the pipeline connecting piece are respectively positioned at two sides of the structural piece, the pipeline connecting piece is connected with the structural piece through the fixing piece, and two ends of the pipeline connecting piece are respectively connected with the pipeline. Because the tube cavity of the tube connecting piece is communicated with the tube, the liquid in the tube on one side of the structural piece flows to the tube on the other side of the structural piece through the tube connecting piece, and the liquid is guided.

The pipeline is connected with the pipeline connecting piece, and the pipeline connecting piece is fixed with the structural part through the fixing piece, so that on one hand, the pipeline is not directly contacted with the structural part; on the other hand, the pipeline is relatively fixed with the structural part through the pipeline connecting piece. Thus, the pipe connection reduces or even eliminates friction or impact between the pipe and the structural member, thereby slowing down wear of the pipe.

Compared with the prior art, the excavator and the pipeline connecting device have the same advantages, and the description is omitted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a pipeline connecting device according to an embodiment of the present invention;

fig. 2 is a schematic view of a pipeline connecting device provided by an embodiment of the present invention connected to a structural member;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a pipeline connecting piece in the pipeline connecting device according to an embodiment of the present invention;

fig. 5 is a partially enlarged view of B in fig. 4.

In the figure:

10-a pipe connection; 11-first stage; 12-a second segment;

13-a lumen; 14-a first accommodating cavity; 15-a second accommodating cavity;

20-a fixing member; 30-a gasket; 40-hose connection;

50-structural member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated elements must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

As shown in fig. 1 to 5, the present embodiment provides a pipe connecting device, including: pipeline connecting piece 10 and mounting 20, pipeline connecting piece 10 is provided with through-type lumen 13, and pipeline connecting piece 10 is used for passing structure 50, and the both ends of pipeline connecting piece 10 are used for connecting the pipeline, and lumen 13 can communicate with the pipeline, and mounting 20 is used for connecting pipeline connecting piece 10 and structure 50.

Specifically, a through hole is provided on the structural member 50, and one end of the pipeline connector 10 passes through the through hole, so that both ends of the pipeline connector 10 are respectively located at both sides of the structural member 50, and both ends of the pipeline connector 10 are respectively connected with the pipeline, so that the pipelines located at both sides of the structural member 50 are communicated. Due to the arrangement, on one hand, the structure is more reasonable in layout, the arrangement of a pipeline system is simplified, and the structure is more compact; on the other hand, the pipeline and the structural part 50 are relatively fixed, and relative friction or impact cannot occur, so that the abrasion of the pipeline is reduced, and the service life of the pipeline is prolonged. In addition, in the process of fixing the pipeline, other fixing supports are not needed, so that the use of the fixing supports in the structure is reduced, and the structure is further simplified.

The fixing members 20 are used to fix the structural member 50 and the pipe connection 10, and in a preferred embodiment, the number of the fixing members 20 is two. Both fixing members 20 are installed on the pipe connection member 10, and both fixing members 20 are used to clamp the structural member 50 so that the pipe connection device is fixed relative to the structural member 50.

In one embodiment, one of the two fixing members 20 is fixedly connected to the pipe connector 10, and specifically, the fixing member 20 may be welded to the pipe connector 10, or the fixing member 20 may be integrally formed with the pipe connector 10. The other fixing member 20 is screw-coupled to the pipe connection member 10. An external thread is provided on the pipe connection member 10, and an internal thread matching the external thread of the pipe connection member 10 is provided on the fixing member 20, so that the fixing member 20 is screw-coupled to the pipe connection member 10. For example, for the sake of convenience of distinction, two fixing members 20 provided with an internal thread are referred to as a first fixing member, and those not provided with an internal thread are referred to as a second fixing member. The second fixing part and the pipeline connecting part 10 are of an integral structure, in the process of installing the pipeline connecting device, the pipeline connecting part 10 penetrates through a through hole in the structural part 50, one side end face of the second fixing part is enabled to be abutted against one side end face of the structural part 50 (directly abutted against or abutted against through a gasket), then the first fixing part is sleeved into the pipeline connecting part 10 on the other side of the structural part 50, in the process of rotating the first fixing part, the distance between the first fixing part and the second fixing part is gradually shortened, finally, the first fixing part is abutted against one side end face of the structural part 50 (directly abutted against or abutted against through a gasket), the structural part 50 is clamped by the first fixing part and the second fixing part together, and therefore the pipeline connecting device is enabled to be connected with the structural part 50. So configured, the speed of installation of the pipe connection device with the structural member 50 may be increased.

In another specific arrangement, two fixing members 20 are detachably connected to the pipeline connector 10, and the two fixing members 20 can clamp the structural member 50, so that the pipeline connector 10 and the structural member 50 are fixed relative to each other.

Specifically, in the using process, the pipeline connector 10 is first inserted through the structural member 50, so that both ends of the pipeline connector 10 respectively extend out of both sides of the structural member 50. The two fixing members 20 are then fixed to the pipe connection 10, respectively, such that the two fixing members 20 are located at both sides of the structural member 50, respectively.

Specifically, in order to facilitate the connection of the line connection member 10 and the fixing member 20, the fixing member 20 is screw-coupled to the line connection member 10. As shown in fig. 1 and 4, an external thread is provided on the pipe connection 10, and an internal thread matching the external thread on the pipe connection 10 is provided on the fixing member 20. After the fixing member 20 is inserted into the pipe connecting member 10, the fixing member 20 is screwed, so that the position of the fixing member 20 on the pipe connecting member 10 can be changed, so that the distance between the two fixing members 20 is changed, so that the two fixing members 20 can clamp the structural member 50.

In one possible embodiment, the fixture 20 may use a locknut. In fig. 1 and 2, the fixing member 20 is a locknut, and the locknut is a hexagonal nut to facilitate screwing.

In one possible embodiment, the pipe connection 10 may be provided with external threads on both external surfaces.

Alternatively, as shown in fig. 4, in a preferred embodiment, the pipe connection 10 is provided with external threads only in the region of the two ends, wherein no external threads are provided in the region of the middle sections. For convenience of description, a portion of the pipe connection 10 not provided with the external thread is referred to as a first section 11, and a portion provided with the external thread is referred to as a second section 12. That is, the pipe connection 10 includes a first section 11 and a second section 12, the second section 12 is provided at both ends of the first section 11, respectively, and an external thread is provided at the second section 12. The first section 11 and the second section 12 are of an integral structure, and in the manufacturing process, a cylindrical tubular structure can be manufactured firstly, then threads are turned inwards at two ends of the cylindrical tubular structure, the area where the threads are turned is the second section 12, and the area where the threads are not arranged in the middle is the first section 11. Preferably, the two second sections 12 are of equal axial length and are arranged so that the length of the region of the pipe connection 10 extending beyond the ends of the structural member 50 for connection to a pipe can be equal.

In an alternative embodiment, the outer diameter of the first section 11 is equal to or greater than the outer diameter of the second section 12. The outer diameter of the first section 11 is equal to or less than the diameter of the through hole of the structural member 50. Specifically, the structural member 50 may be perforated to form a through hole matching the size of the pipe connection 10 according to the outer diameter size of the first section 11.

In a possible embodiment, a gasket 30 is further included, the gasket 30 being sleeved on the pipe connection 10, the gasket 30 being located on a side of the fixing member 20 facing the structural member 50. Specifically, the gasket 30 is a flat gasket 30. The gasket 30 may be a metal gasket 30 or a rubber gasket 30. The outer diameter of the washer 30 is larger than the outer diameter of the fixing member 20, the inner diameter of the washer 30 is smaller than the diameter of the through hole of the structural member 50, and the inner diameter of the washer 30 is equal to or larger than the outer diameter of the second section 12 of the pipe connection member 10 in which the external thread region is provided.

In a possible embodiment, the pipe connection 10 is connected to the pipe by a pipe joint, and the pipe joint is connected to both ends of the pipe connection 10. The pipe joint may be a hard pipe joint or a hose joint 40 depending on the pipe to which the pipe connector 10 is connected. The pipe connection 10 is connected to a hard pipe through a hard pipe joint and a hose through a hose joint 40.

In order to improve the sealing performance between the pipeline connector 10 and the hard pipe joint, preferably, as shown in fig. 4 and 5, the end of the pipe cavity 13 is provided with a first accommodating cavity 14, and the first accommodating cavity 14 is matched with a sealing piece of the hard pipe joint.

Specifically, the hard pipe joint includes link and pipe end, and the one end of pipe end stretches into the link, and the end that the pipe end stretched into the link is provided with the sealing member, and the link is provided with the internal thread, and the hard pipe joint passes through pipe end and pipeline connecting piece 10 threaded connection. After the pipe end is sleeved on the pipeline connecting piece 10, the sealing piece of the pipe end extends into the first accommodating cavity 14, when the sealing piece of the hard pipe joint is an O-shaped ring, the first accommodating cavity 14 is a cylindrical cavity, and the first accommodating cavity 14 is an equal-diameter cavity. Preferably, the diameter of the first housing cavity 14 is greater than the diameter of the lumen 13. So set up for form the step face between first holding chamber 14 and the lumen 13, can be with hard tube joint butt in step face department, play limiting displacement to hard tube joint.

Specifically, as shown in fig. 1 and 2, the hose connector 40 also includes a connection end and a pipe end, one end of the pipe end extends into the connection end, the end of the pipe end extending into the connection end is provided with a sealing member, the connection end is provided with an internal thread, and the hose connector 40 is in threaded connection with the pipeline connector 10 through the pipe end.

As shown in fig. 4 and 5, the end of the tube cavity 13 is provided with a second receiving cavity 15, and the second receiving cavity 15 is matched with the sealing member of the hose connector 40.

When the sealing element of the hose connector 40 is a circular truncated cone-shaped sealing ring, correspondingly, the second accommodating cavity 15 is circular truncated cone-shaped, and the diameter of the second accommodating cavity 15 gradually decreases from outside to inside. So set up for area of contact between the lateral wall of second holding chamber 15 and the sealing member is bigger, and sealed effect is better.

Of course, if the sealing member of the hose connector 40 is an O-ring, the chamber of the second receiving chamber 15 is cylindrical.

In a possible embodiment, the pipe connection 10 may be provided with only one of the first housing chamber 14 and the second housing chamber 15, and when connecting hard pipes, the pipe connection 10 having the first housing chamber 14 is used; when connecting the hose, a line connection 10 with a second receiving chamber 15 is used.

Alternatively, as shown in fig. 4 and 5, it is preferable that the pipe connection 10 is provided with a first receiving chamber 14 and a second receiving chamber 15 at the same time, and the second receiving chamber 15 is located outside the first receiving chamber 14. So set up, this kind of pipeline connecting piece 10 both can be used for connecting the hose, also can be used for connecting the hard tube, and the suitability is strong.

When the first accommodating cavity 14 and the second accommodating cavity 15 are both cylindrical cavities, the diameter of the second accommodating cavity 15 is larger than or equal to that of the first accommodating cavity 14, and the arrangement is such that the sealing element of the hard pipe joint can penetrate through the second accommodating cavity 15 and extend into the first accommodating cavity 14.

When the first accommodating cavity 14 is a cylindrical cavity and the second accommodating cavity 15 is a truncated cone-shaped cavity, the minimum diameter of the second accommodating cavity 15 is greater than or equal to the diameter of the first accommodating cavity 14. The arrangement is such that the seal of the hard pipe joint can extend into the first receiving chamber 14 through the second receiving chamber 15.

In summary, the pipe connection device provided by the present embodiment has at least the following advantages:

first, the pipeline connecting device that this embodiment provided can the run-through structure to connect the pipeline of structure both sides, so that liquid can flow to the opposite side behind the run-through structure by one side of structure in pipeline and pipeline connecting device, need not to bypass the structure with the pipeline, thereby reduced the length of required pipeline, the cost is reduced on the one hand, makes pipe-line system more succinct clear on the one hand, is convenient for examine and repair, the simplified structure. In addition, the length of the pipeline is reduced, so that the speed of the liquid flowing from the starting point to the end point is increased, namely, the response speed of the equipment applying the pipeline connecting device is improved.

Secondly, in the installation process of the pipeline connecting device, the pipeline connecting piece firstly penetrates through the through hole in the structural piece, and then the fixing pieces are screwed into the two ends of the pipeline connecting piece respectively so as to clamp the structural piece through the fixing pieces, so that the pipeline connecting device is fixed on the structural piece. The two ends of the pipeline connecting piece are respectively connected with the pipeline through pipeline joints. The installation mode is simple and fast, the installation and disassembly speed is fast, and the efficiency is high.

In addition, the pipeline connecting device is used for fixing the pipeline, and other pipe brackets are not needed to be matched, so that the structure of the equipment is simplified. The pipeline connecting device has compact structure, small occupied space and convenient arrangement.

The pipeline connecting device can be applied to various devices and has a wide application range. The advantage is more obvious in the equipment with larger structural member size. When there are multiple pipes in the apparatus that need to pass through the structural member, multiple pipe connection devices can be installed. The advantages of the pipe connection device are more obvious in the equipment with more pipes.

Second embodiment

As shown in fig. 2, the present embodiment provides an excavator, including: pipeline, structure 50 and the pipeline connecting device that the first embodiment provided above, structure 50 is provided with the through-hole, and pipeline connecting device passes the through-hole, and the through-hole is stretched out respectively at pipeline connecting device's both ends, and pipeline is connected with respectively at the both ends that pipeline connecting device stretches out the through-hole. So set up for the pipeline that is located structure 50 both ends all communicates through the pipe connection device, and is fixed with structure 50 through the pipe connection device.

The excavator provided by this embodiment has the same advantages as the pipeline connecting device provided by the first embodiment with respect to the prior art, and the description thereof is omitted.

In a preferred embodiment, as shown in figure 3, the length of the first section 11 of the pipe coupling 10 in the pipe coupling is less than the length of the through bore. So set up for screw thread on second section 12 has at least some regions to stretch into in the through-hole to guarantee that mounting 20 can lock, fixed effect is better.

In summary, since the excavator provided by this embodiment uses the pipeline connecting device to connect the pipeline, the excavator provided by this embodiment has at least the following advantages:

firstly, compared with the prior art in which the length of the pipeline is increased so that the pipeline can extend from one side of the structural member 50 along the contour surface of the structural member 50 to reach the other side of the structural member 50 by bypassing the structural member 50, in the excavator provided in this embodiment, the pipeline connecting device is installed by punching the structural member 50, and the pipelines located at both sides of the structural member 50 are connected by the pipeline connecting device, so that liquid in the excavator can flow from one end of the structural member 50 to the other end of the structural member 50 by directly passing through the structural member 50 through the matching of the pipeline and the pipeline connecting device, and thus the pipeline does not need to bypass the whole structural member 50, the length of the pipeline can be reduced, on one hand, the arrangement of a pipeline system can be simplified, the structure is clearer and simpler, and on the other.

Compared with the arrangement mode that holes are punched on the structural member 50 to enable the pipeline to penetrate through the holes of the structural member 50, the pipeline connecting device is used in the excavator provided by the embodiment, the pipeline connecting device can be used for fixing the pipeline and the structural member 50, the installation and the disassembly are easy, on one hand, the pipeline is convenient to install and disassemble so as to overhaul or replace, on the other hand, the pipeline and the structural member 50 are relatively fixed, friction or impact can be reduced, the pipeline abrasion is reduced, and the service life of the pipeline is prolonged.

Compared with the arrangement mode that a plurality of pipelines are drilled in the structural member 50, the excavator provided by the embodiment has the advantages that one pipeline connecting device can be installed by drilling a smaller hole in the structural member 50, so that the pipelines on one route are fixed. When a plurality of pipes need to be connected, a plurality of pipe connection devices need to be connected to the structural member 50 to fix the plurality of pipes. So set up, on the one hand, the pipeline of different circuits is fixed through different pipeline connecting device for pipe-line system is more regular clear, is convenient for look for the extending direction of pipeline, so that overhaul. On the other hand, the structural member 50 does not need to be provided with a hole with a large size, and the small holes are correspondingly provided with pipeline connecting devices, so that the structural strength of the structural member 50 is relatively less influenced. In addition, the pipeline connecting device has the function of connecting and fixing the pipeline, so that other pipe supports are not needed to be used for fixing the pipeline, the using amount of the pipe supports in the device is reduced, and the structure of a pipeline system is further simplified.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (15)

1. A pipe connection device, comprising: pipeline connecting piece (10) and mounting (20), pipeline connecting piece (10) are provided with through-type lumen (13), pipeline connecting piece (10) are used for passing structure (50), the both ends of pipeline connecting piece (10) are used for connecting the pipeline, lumen (13) can communicate with the pipeline, mounting (20) are used for connecting pipeline connecting piece (10) with structure (50).

2. Pipe connection according to claim 1, characterized in that the pipe connection (10) is provided with an external thread, that the pipe connection (10) is provided with two fixing parts (20) on which the two fixing parts (20) are arranged, that the two fixing parts (20) are intended to clamp the structural part (50), and that at least one of the fixing parts (20) is provided with an internal thread.

3. Pipe connection according to claim 2, characterized in that both said fixing elements (20) are provided with an internal thread, said pipe connection (10) comprising a first section (11) and a second section (12), said first section (11) being provided at both ends with a second section (12), respectively, said external thread being provided at said second section (12).

4. Tubing connection according to claim 3, characterized in that the outer diameter of the first section (11) is equal to or greater than the outer diameter of the second section (12).

5. The pipe connection device according to claim 1, further comprising a gasket (30), wherein the gasket (30) is sleeved on the pipe connection member (10), and the gasket (30) is located on a side of the fixing member (20) facing the structural member (50).

6. The pipe connection according to claim 1, characterized in that pipe joints are connected to both ends of the pipe connection (10), through which the pipe connection (10) is connected to the pipe.

7. Tubing connection apparatus according to claim 6, characterized in that the tubing connection is a hard or hose connection (40).

8. Pipeline connecting device according to claim 7, characterized in that the end of the tube cavity (13) is provided with a first receiving cavity (14), the first receiving cavity (14) matching with a seal of a hard pipe joint.

9. Tubing connection device according to claim 8, characterized in that the diameter of said first housing chamber (14) is greater than the diameter of said lumen (13).

10. Tubing connection device according to claim 7 or 8, characterized in that the end of the lumen (13) is provided with a second housing cavity (15), the second housing cavity (15) matching the seal of the hose connector (40).

11. The pipe connection according to claim 10, wherein the second housing chamber (15) is frustoconical, the diameter of the second housing chamber (15) decreasing from the outside to the inside.

12. Pipe connection according to claim 10, characterized in that, when the pipe connection (10) is provided with both a first receiving chamber (14) and a second receiving chamber (15), the second receiving chamber (15) is located outside the first receiving chamber (14).

13. Tubing connection according to claim 12, characterized in that the smallest diameter of the second housing chamber (15) is equal to or greater than the diameter of the first housing chamber (14).

14. An excavator, comprising: pipeline, structure (50) and a pipe connection according to any of claims 1-13, said structure (50) being provided with a through hole through which said pipe connection passes, said pipe connection extending through said through hole and having said pipe connected to each of the two ends of said pipe connection extending through said through hole.

15. Excavator according to claim 14, wherein the length of the first section (11) of the pipe connection device is smaller than the length of the through hole.

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