Drainage vehicle and telescopic pipe device thereof

Abstract

The telescopic pipe device comprises an outer pipe, a first inner pipe and a first supporting ring, the outer pipe is provided with an end plate, the end plate is provided with an opening for the first inner pipe to penetrate through, the first inner pipe extends into the outer pipe from the opening, the opening is provided with the first supporting ring, and the first supporting ring is arranged on the first supporting ring. The first supporting ring is of an annular structure, an inner ring of the first supporting ring is in sliding connection with the first inner pipe and used for supporting the first inner pipe, and a first sliding piece in sliding connection with the first inner pipe is arranged on the inner ring of the first supporting ring. The first supporting ring has a certain length and can support the first inner pipe, deflection of the first inner pipe is effectively prevented, the deflection of all the pipes on the telescopic pipe is reduced, and the pipe jacking risk of the pipes is reduced, and the first sliding piece is additionally arranged on the inner ring, making contact with the first inner pipe, of the first supporting ring; and the frictional resistance of the telescopic pipe in the telescopic process is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic pipes, in particular to a drainage truck and a telescopic pipe device thereof. Background Art

[0002] In existing drainage trucks and temporary drainage projects, traditional pipes with fixed lengths are difficult to meet actual requirements. To solve this problem, retractable drain pipes have emerged. The structure of a retractable drain pipe can be referred to in the Chinese patent with the publication number CN201619502U, which discloses that the telescopic pipe is composed of a bent pipe, an outer pipe, an inner pipe, a sealing device, a drag chain, a roller, a pipe hoop, and a telescopic oil cylinder. The inner pipe is arranged in the outer pipe through several sealing devices that can play a positioning role. The inner pipe and the sealing device are in sliding connection. A bent pipe is connected to the outlet end of the outer pipe. One end of the telescopic oil cylinder is installed on the outer surface of the outer pipe, and the other end of the telescopic oil cylinder is connected to the outer surface of the inner pipe.

[0003] When the length of the inner pipe is too long, the deflection is large, and there is a certain probability of inclination under its own weight or the load it bears, which will also cause collisions between the inner and outer pipes, resulting in wear of the pipe wall. Summary of the Utility Model

[0004] Therefore, it is necessary to provide a drainage truck and a telescopic pipe device thereof to solve the problems that when the length of the inner pipe is too long, the deflection is large, and there is a certain probability of inclination under its own weight or the load it bears, which will also cause collisions between the inner and outer pipes, resulting in wear of the pipe wall.

[0005] To achieve the above object, this embodiment provides a telescopic pipe device, including an outer pipe, a first inner pipe, and a first support ring. The outer pipe has an end plate, and the end plate has an opening for the first inner pipe to pass through. The first inner pipe extends into the outer pipe from the opening. The first support ring is provided on the opening. The first support ring is a ring structure. The inner circle of the first support ring is slidably connected to the first inner pipe for supporting the first inner pipe. A first sliding member slidably connected to the first inner pipe is provided on the inner circle of the first support ring.

[0006] Further, a sunken first installation groove is provided on the inner circle of the first support ring. The first sliding member is a sliding block embedded in the first installation groove, and the sliding block is arc-shaped.

[0007] Further, the material of the sliding block is polytetrafluoroethylene or nylon.

[0008] Further, the outer pipe includes a pipe body, a first flange, and a second flange. The first flange is welded to the outer wall of the pipe body near the port. The first flange and the second flange are connected by bolts. The inner circle of the second flange is welded to the outer circle of the first support ring, and the second flange serves as the end plate.

[0009] Further, a sealing mechanism is further included, and the sealing mechanism is arranged on the first support ring for sealing the first inner tube.

[0010] Further, the sealing mechanism includes a fixed seat and a sealing ring. The fixed seat is arranged on the side of the first support ring, and the fixed seat is provided with an assembly groove for accommodating the sealing ring. The sealing ring contacts the outer wall of the first inner tube to seal the first inner tube.

[0011] Further, a second support ring and a bracket are further included. The second support ring is located outside the outer tube and is slidably sleeved on the outer wall of the first inner tube, and a bracket is arranged on the second support ring.

[0012] Further, a second sliding member slidably connected to the first inner tube is arranged on the inner ring of the second support ring.

[0013] Further, a sliding frame and a sliding mechanism are further included. The outer wall of the outer tube is connected to the sliding frame through the sliding mechanism, and the bracket is arranged on the sliding frame.

[0014] To achieve the above object, the present embodiment further provides a drainage vehicle, including a chassis and a tipping frame. The tipping frame can be turned up and down relative to the chassis. A telescopic pipe device and a water pump are further included. The telescopic pipe device is the telescopic pipe device described in any one of the above embodiments. The tipping frame supports the telescopic pipe device. The telescopic pipe device further includes a second inner tube. The first inner tube of the telescopic pipe device extends into the outer tube from the front port, the second inner tube extends into the outer tube from the rear port, the first inner tube can extend into the second inner tube from the front port, and the water pump is connected to the rear port of the second inner tube for pumping water.

[0015] Different from the prior art, the above technical solution has the following beneficial effects:

[0016] The first support ring has a certain length and can support the first inner tube, effectively preventing the first inner tube from deflecting, reducing the deflection of each pipe on the telescopic pipe, reducing the pipe jacking risk of the pipe, and a first sliding member is additionally provided on the inner ring contacting the first inner tube of the first support ring. The setting of the first sliding member greatly reduces the frictional resistance during the telescopic process of the telescopic pipe, which helps the smooth sliding of the first inner tube. Description of the Drawings

[0017] Figure 1 It is the front view of the telescopic pipe device in this embodiment;

[0018] Figure 2 It is the front view of the outer tube, the first inner tube and the first support ring in this embodiment;

[0019] Figure 3 is Figure 2 an enlarged view of part A in

[0020] Figure 4 is Figure 1 a three-dimensional view of part B in

[0021] Figure 5 is a three-dimensional view of the sliding frame, the second support ring and the bracket in this embodiment.

[0022] Description of reference numerals:

[0023] 1. Outer tube;

[0024] 11. Tube body;

[0025] 12. First flange;

[0026] 13. Second flange;

[0027] 14. Bolt;

[0028] 2. First inner tube;

[0029] 3. First support ring;

[0030] 31. Inner ring; 32. First sliding member;

[0031] 4. Sealing mechanism;

[0032] 41. Fixed seat; 42. Sealing ring;

[0033] 5. Second support ring;

[0034] 51. Inner ring; 52. Second sliding member;

[0035] 6. Bracket;

[0036] 7. Second inner tube;

[0037] 8. Sliding frame; 81. Sliding mechanism;

[0038] 9. Flipping frame;

[0039] 10. Water pump. Detailed implementation manners

[0040] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, the following is described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only used as examples and cannot be used to limit the protection scope of this application.

[0041] Reference to "embodiment" in this document means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0042] Unless otherwise defined, the meanings of the technical terms used in this document are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0043] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this document generally represents an "or" logical relationship between the associated objects before and after.

[0044] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationships between these entities or operations.

[0045] Without further limitation, in this application, the expressions "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product including the said elements, so that a process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0046] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the number itself; expressions such as "above", "below", "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise specifically defined.

[0047] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0048] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0049] Please refer to Figures 1 to 5 , this embodiment provides a telescopic pipe device. The telescopic pipe device can adjust its length as needed to adapt to different drainage scenarios. The telescopic pipe device includes an outer pipe 1, a first inner pipe 2, and a first support ring 3. The outer pipe 1 has an end plate, and the end plate has an opening through which the first inner pipe 2 passes. The first inner pipe 2 extends into the outer pipe 1 from the opening. A first support ring 3 is provided on the opening. The first support ring 3 is a ring structure. The inner ring 31 of the first support ring 3 is slidably connected to the first inner pipe 2 for supporting the first inner pipe 2. A first sliding member 32 slidably connected to the first inner pipe 2 is provided on the inner ring 31 of the first support ring 3.

[0050] The outer pipe 1 has a relatively large inner diameter for accommodating the first inner pipe 2 to slide inside it. When it is necessary to adjust the length of the telescopic pipe device, the first inner pipe 2 can be driven to perform telescopic actions inside the outer pipe 1 through a first linear motion mechanism (such as an oil cylinder, a cylinder, an electric cylinder, etc.). When it is necessary to increase the total length of the pipeline, the first inner pipe 2 extends out from the front port of the outer pipe 1, where Figure 2 the direction indicated by the arrow a is the front direction; conversely, the first inner pipe 2 is retracted into the outer pipe 1.

[0051] The end of the outer pipe 1 is provided with an end plate, and a first support ring 3 is installed in the opening on the end plate. The first support ring 3 has a certain length and can support the first inner pipe 2, effectively preventing the first inner pipe 2 from deflecting, reducing the deflection of each pipe on the telescopic pipe, and reducing the pipe jacking risk of the pipe. A first sliding member 32 is additionally provided on the inner ring 31 of the first support ring 3 that contacts the first inner pipe 2. The setting of the first sliding member 32 greatly reduces the frictional resistance during the telescopic process of the telescopic pipe, facilitating the smooth sliding of the first inner pipe 2.

[0052] Please refer to Figure 2 and Figure 3 In this embodiment, a recessed first installation groove is provided on the inner ring 31 of the first support ring 3. The first sliding member 32 is a sliding block embedded in the first installation groove, and the sliding block is arc-shaped. The sliding block is embedded in the first installation groove, with a stable structure. The sliding block is designed in an arc shape, so that it can better fit the surface of the first inner pipe 2 and maintain a good guiding effect.

[0053] In this embodiment, the material of the sliding block is polytetrafluoroethylene or nylon. The sliding block made of polytetrafluoroethylene or nylon has a very low coefficient of friction, which can significantly reduce the frictional force between the sliding block and the first inner pipe 2. Moreover, both of these materials have good wear resistance. Even after long-term use, the sliding block is not easily worn, thus extending the service life of the telescopic pipe device.

[0054] In some embodiments, the first sliding member 32 is a smooth and wear-resistant coating located on the inner ring 31 of the first support ring 3 to reduce the sliding frictional force.

[0055] Please refer to Figure 3 In this embodiment, the length d1 of the sliding block is 50 - 75 mm, and the length d2 of the first support ring 3 is 76 - 115 mm. The length of the sliding block is limited between 50 - 75 mm. Such a dimension design can ensure that the sliding block has sufficient contact area on the first inner pipe 2 to provide good support and guiding effects. At the same time, the length of the sliding block is not too long to avoid increasing unnecessary weight or volume. The length of the first support ring 3 is limited between 76 - 115 mm. Such a length design can ensure that the first support ring 3 has sufficient length to firmly support the first inner pipe 2. In some embodiments, the length of the sliding block can be greater than 75 mm or less than 50 mm, and the length of the first support ring 3 can be greater than 76 mm or less than 115 mm.

[0056] Please refer to Figure 2 、 Figure 3 and Figure 4, in this embodiment, the outer tube 1 includes a tube body 11, a first flange 12 and a second flange 13. The first flange 12 is welded to the outer wall of the tube body 11 near the port. The first flange 12 and the second flange 13 are connected by bolts 14. The inner ring of the second flange 13 is welded to the outer ring of the first support ring 3. Since the second flange 13 is to fix the first support ring 3 and the first flange 12 is fixed to the outer tube 1, the inner diameter of the second flange 13 is smaller than that of the first flange 12. As an end plate, the second flange 13 is connected to the first support ring 3 by welding, which can effectively prevent loosening or falling off during use and improve the reliability. Using the standard flange connection method can simplify the manufacturing process.

[0057] Please refer to Figure 2 and Figure 3 , in this embodiment, the telescopic tube device further includes a sealing mechanism 4. The sealing mechanism 4 is arranged on the first support ring 3 and is used to seal the first inner tube 2 to prevent water flow from leaking out of the outer wall of the first inner tube 2 during drainage.

[0058] Please refer to Figure 3 , in this embodiment, the sealing mechanism 4 includes a fixed seat 41 and a sealing ring 42. The fixed seat 41 is arranged on the side of the first support ring 3. Figure 3 As shown, the fixed seat 41 is in front of the direction indicated by the arrow a, and the first support ring 3 is behind. Assembling the fixed seat 41 on the outside of the first support ring 3 is convenient for maintenance and replacement. The fixed seat 41 is provided with an assembly groove for accommodating the sealing ring 42. The sealing ring 42 contacts the outer wall of the first inner tube 2 to seal the first inner tube 2. The sealing ring 42 will closely adhere to the outer wall of the first inner tube 2, maintaining close contact, thereby preventing foreign substances from entering the inside of the telescopic tube and also preventing the leakage of fluids or gases inside the telescopic tube.

[0059] In this embodiment, the sealing ring 42 can be a rubber ring, a sealing gasket or other types of elastic sealing elements. Preferably, the sealing ring 42 is an inflatable sealing ring, and the structure is as Figure 3 shown. It can be inflated or deflated through an external interface to facilitate adjusting the pressure of the sealing ring. The inflatable sealing ring expands and closely adheres to the outer wall of the first inner tube 2 after inflation to achieve the sealing effect and can be deflated when needed.

[0060] Please refer to Figures 2 to 5, in this embodiment, the telescopic pipe device further includes a second support ring 5 and a bracket 6. The second support ring 5 is slidably sleeved on the outer wall of the first inner pipe 2, and the bracket 6 is provided on the second support ring 5. By adding the second support ring 5, an additional support point can be provided for the first inner pipe 2. When the first inner pipe 2 slides telescopically, it will slide in the second support ring 5. The bracket 6 can be provided on an external structure, such as the sliding frame 8 mentioned below. The first support ring 3 supports the first inner pipe 2 in the outer pipe 1, and the second support ring 5 supports the first inner pipe 2 outside the outer pipe 1, which can disperse the load of the first inner pipe 2. The combined use of the two provides double internal and external supports for the first inner pipe 2, reduces the deflection of the pipes on the telescopic pipeline, and reduces the pipe jacking risk of each pipeline.

[0061] Please refer to Figure 3 , in this embodiment, a second sliding member 52 slidably connected to the first inner pipe 2 is provided on the inner ring 51 of the second support ring 5, and the inner ring 51 of the second support ring 5 surrounds the first inner pipe 2. A concave second installation groove is provided on the inner ring 51 of the second support ring 5, and the second sliding member 52 is a sliding block embedded in the second installation groove, and the sliding block is arc-shaped. The sliding block is embedded in the second installation groove, and the structure is stable. The sliding block is designed in an arc shape, so that it can better fit the surface of the first inner pipe 2 and can maintain a good guiding effect. Preferably, the material of the second sliding member 52 is polytetrafluoroethylene or nylon.

[0062] In some embodiments, the second sliding member 52 is a smooth and wear-resistant coating located on the inner ring 51 of the second support ring 5 to reduce the sliding friction.

[0063] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 , in this embodiment, the telescopic pipe device further includes a sliding frame 8 and a sliding mechanism 81. The outer wall of the outer pipe 1 is connected to the sliding frame 8 through the sliding mechanism, and the bracket 6 is provided on the sliding frame 8. The sliding mechanism 81 enables the sliding frame 8 to slide relative to the outer wall of the outer pipe 1, while the second support ring 5 is slidably sleeved on the outer wall of the first inner pipe 2. When the first inner pipe 2 expands and contracts, the bracket 6 on the sliding frame 8 and the position of the second support ring 5 remain unchanged to support the first inner pipe 2 to adapt to different usage scenarios.

[0064] In this embodiment, the sliding mechanism can be a slider chute mechanism or a pulley rail mechanism. Figure 4 When the shown sliding mechanism 81 is a pulley rail mechanism, the involved rail enables the sliding frame 8 and the outer pipe 1 to be movable.

[0065] Please refer to Figure 1, in this embodiment, the telescopic pipe device further includes a second inner pipe 7. The first inner pipe 2 of the telescopic pipe device extends into the outer pipe 1 from the front port, and the second inner pipe 7 extends into the outer pipe 1 from the rear port. The first inner pipe 2 can extend into the front port of the second inner pipe 7. Since the self-weight of the first inner pipe 2 or the load it bears may cause a problem of downward inclination, with the support of the first support ring 3 / second support ring 5, it helps to keep the first inner pipe 2 horizontal and can reduce the probability of the first inner pipe 2 hitting the end of the second inner pipe 7. The second inner pipe 7 can be driven by a second linear motion mechanism (such as an oil cylinder, a cylinder, an electric cylinder, etc.) to perform telescopic movement within the outer pipe 1. When it is necessary to increase the total length of the pipeline, the second inner pipe 7 extends out from the front port of the outer pipe 1; conversely, the second inner pipe 7 is retracted into the outer pipe 1.

[0066] Please refer to Figures 1 to 5 , this embodiment also provides a drainage truck, which includes a chassis and a tipping frame 9. The tipping frame 9 can be turned up and down relative to the chassis, and also includes a telescopic pipe device and a water pump 10. The telescopic pipe device is the telescopic pipe device described in any one of the above embodiments, and the tipping frame 9 supports the telescopic pipe device. The water pump 10 is connected to the rear port of the second inner pipe 7 for pumping water.

[0067] The tipping frame 9 can be hinged to the chassis of the drainage truck. The tipping frame 9 can be turned up and down relative to the chassis, so that the telescopic drainage pipe device can be turned up and down to adjust the water intake angle. Among them, the turning of the tipping frame 9 can be realized by pushing with a cylinder, an oil cylinder, or an electric cylinder. Preferably, the tipping frame 9 supports the sliding frame 8, and then the sliding frame 8 is connected to the outer pipe 1 of the telescopic pipe device through a sliding mechanism.

[0068] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications made to the embodiments described in this article, or the equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present invention.

Claims

1. A telescopic tube device, characterized in that, It includes an outer tube, a first inner tube and a first support ring. The outer tube has an end plate which has an opening for the first inner tube to penetrate through. The first inner tube extends into the outer tube from the opening. The first support ring is provided on the opening. The first support ring is of a ring structure. The inner ring of the first support ring is slidably connected to the first inner tube for supporting the first inner tube. A first sliding member for slidably connecting with the first inner tube is provided on the inner ring of the first support ring.

2. The telescopic tube device according to claim 1, characterized in that, A sunken first installation groove is provided on the inner ring of the first support ring. The first sliding member is a sliding block embedded in the first installation groove, and the sliding block is arc-shaped.

3. The telescopic tube device according to claim 2, characterized in that, The material of the sliding block is polytetrafluoroethylene or nylon.

4. The telescopic tube device according to claim 1, characterized in that, The outer tube includes a tube body, a first flange and a second flange. The first flange is welded on the outer wall of the tube body near the port. The first flange and the second flange are connected by bolts. The inner ring of the second flange is welded to the outer ring of the first support ring, and the second flange serves as the end plate.

5. The telescopic tube device according to claim 1, wherein It further includes a sealing mechanism which is provided on the first support ring for sealing the first inner tube.

6. The telescopic tube device according to claim 5, characterized in that The sealing mechanism includes a fixed seat and a sealing ring. The fixed seat is provided on the side of the first support ring. The fixed seat is provided with an assembly groove for accommodating the sealing ring. The sealing ring contacts the outer wall of the first inner tube to seal the first inner tube.

7. The telescopic tube device according to any one of claims 1 to 6, characterized in that, It further includes a second support ring and a bracket. The second support ring is located outside the outer tube and is slidably sleeved on the outer wall of the first inner tube. A bracket is provided on the second support ring.

8. The telescopic tube device according to claim 7, characterized in that, A second sliding member for slidably connecting with the first inner tube is provided on the inner ring of the second support ring.

9. The telescopic tube device according to claim 7, characterized in that, It further includes a sliding frame and a sliding mechanism. The outer wall of the outer tube is connected to the sliding frame through the sliding mechanism. The bracket is provided on the sliding frame.

10. A drainage vehicle, comprising a chassis and a tipping frame, the tipping frame being capable of tipping up and down relative to the chassis, characterized in that, It further includes a telescopic tube device and a water pump. The telescopic tube device is the telescopic tube device according to any one of claims 1 to 9. The telescopic tube device is supported on the turning frame. The telescopic tube device further includes a second inner tube. The first inner tube of the telescopic tube device extends into the outer tube from the front port. The second inner tube extends into the outer tube from the rear port. The first inner tube can extend into the second inner tube from the front port. The water pump is connected to the rear port of the second inner tube for pumping water.

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