A telescopic boom with self-spraying cooling and water jet cutting equipment

Abstract

This invention provides a telescopic boom with self-spraying cooling and a water jetting cutting device. The telescopic boom includes N-1 reels, a primary fixed boom section, and N-1 telescopic boom sections sequentially telescopically connected within the primary fixed boom section. The primary fixed boom section is equipped with a fixed spray pipe with several spray nozzles spaced apart for spraying cooling medium onto the primary fixed boom section. A flexible hose for the cooling medium to flow through is wound on the reels. Each telescopic boom section is equipped with a telescopic spray pipe, one end of which is located on the primary fixed boom section and connected to the hose on the corresponding reel, while the other end is located on the corresponding telescopic boom section. The telescopic spray pipe extends and retracts with the telescopic boom section, and the spray nozzles spaced apart on the telescopic spray pipe spray cooling medium onto the corresponding telescopic boom section. This invention provides continuous, full-coverage self-spraying cooling for each working boom section.

Description

Technical Field

[0001] This invention relates to the field of water jet cutting equipment technology, and in particular to a telescopic arm with self-spraying cooling and water jet cutting equipment. Background Technology

[0002] Telescopic boom hydraulic sandblasting cutting devices are used to hydraulically cut burning wellhead equipment in the event of a fire in an oil and gas field. A single cutting operation typically takes more than 30 minutes. Monitoring data shows that the temperature within a 2-meter diameter area of ​​the wellhead can reach over 1200℃, and the ambient temperature within 5 meters of the wellhead exceeds 600℃. When the hydraulic cutting device is cutting the wellhead, the telescopic boom's working position is characterized by its proximity to the ignition source and high temperature. As a crucial component of the hydraulic sandblasting cutting device, the telescopic boom's overall structure is primarily made of high-strength steel. This material is highly sensitive to high-temperature environments; its mechanical properties deteriorate significantly under high temperatures. Failure to control the temperature may lead to equipment malfunction or damage, or even secondary safety accidents.

[0003] Therefore, there is an urgent need for a telescopic boom and water jet cutting equipment with self-spraying cooling that can continuously and fully cover the surface of each telescopic working arm with self-spraying cooling. Summary of the Invention

[0004] The purpose of this invention is to provide a telescopic boom with self-spraying cooling and a water jet cutting device, aiming to solve the technical problem that the high operating environment temperature of the telescopic boom in water jet cutting equipment easily reduces the mechanical performance of the telescopic boom.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a telescopic boom with self-spraying cooling, comprising N-1 reels, a primary fixed boom section, and N-1 telescopic boom sections sequentially telescopically connected within the primary fixed boom section. The primary fixed boom section is provided with a fixed spray pipe, and the fixed spray pipe is provided with a plurality of spray nozzles at intervals for spraying cooling medium onto the primary fixed boom section; the reels are wound with a flexible hose through which the cooling medium flows.

[0006] The telescopic boom is equipped with a telescopic spray pipe. One end of the telescopic spray pipe is supported on the first fixed boom and connected to the hose on the corresponding reel, while the other end is supported on the corresponding telescopic boom.

[0007] The telescopic spray pipe extends and retracts along with the telescopic boom. The telescopic spray pipe is provided with a number of spray nozzles at intervals for spraying cooling medium onto the corresponding telescopic boom; where N is an integer greater than 1.

[0008] As a further improvement to the above solution, the end of the telescopic boom away from the reel is provided with a spray pipe connecting frame for supporting and connecting the corresponding telescopic spray pipe.

[0009] As a further improvement to the above solution, the retractable spray pipe includes a support frame, a rigid pipe for the cooling medium to flow through, which is disposed at the bottom of the support frame, and an obstacle-crossing roller assembly.

[0010] The bottom of the rigid tube is provided with several spray nozzles at intervals;

[0011] The obstacle-crossing roller assembly is located at the bottom of the support frame and near the reel end;

[0012] The rigid tube has a first endplate at the end furthest from the reel and a first connector for connecting to the flexible tube at the end near the reel.

[0013] As a further improvement to the above solution, the end of the first-stage fixed boom and / or the telescopic boom away from the reel is provided with an obstacle-crossing guide structure, so that the obstacle-crossing roller assembly on the telescopic boom can cross the entire first-stage fixed boom or the next stage telescopic boom.

[0014] As a further improvement to the above solution, the obstacle crossing guidance structure includes a first obstacle crossing component and a second obstacle crossing component. The first obstacle crossing component is inclinedly connected to the end of the first-stage fixed arm segment and / or the telescopic arm segment in an upward slope, and the second obstacle crossing component is inclinedly connected to the corresponding end of the first-stage fixed arm segment and / or the telescopic arm segment in a downward slope.

[0015] Furthermore, the first obstacle-crossing component and the second obstacle-crossing component are configured in pairs.

[0016] As a further improvement to the above solution, the first obstacle-crossing component is a plate with a set thickness; the second obstacle-crossing component includes a flat plate segment and an inclined plate segment integrally connected to the flat plate segment, and the vertical projection height of the inclined plate segment is less than or equal to the drop between the corresponding adjacent arm segments.

[0017] As a further improvement to the above solution, the ends of the first-level fixed boom section and the telescopic boom sections less than the Nth level that are away from the reel are respectively provided with support guide frame assemblies, where N is an integer greater than 1.

[0018] The support guide frame assembly includes a support bracket and guide rollers respectively disposed on both sides inside the support bracket; the support bracket is fixedly disposed on the corresponding first-stage fixed arm section and telescopic arm section, and the telescopic spray pipe passes through the support bracket and is positioned above the guide rollers.

[0019] As a further improvement to the above solution, the first-stage fixed boom is provided with a first guide roller assembly that matches the number of reels, for supporting the hose;

[0020] The first guide roller assembly includes a first guide bracket, a first roller assembly, and a second roller assembly;

[0021] The first guide bracket is provided with the first roller assembly on the front and rear sides respectively, and the first roller assembly is arranged horizontally.

[0022] The first guide bracket has a second roller assembly on its left and right sides, respectively, and the second roller assembly is vertically suspended on the top inner side of the first guide bracket;

[0023] The space between the two first roller assemblies and the two second roller assemblies forms a guide support space through which the hose passes.

[0024] As a further improvement to the above solution, the first guide bracket includes a first base and a portal guide frame disposed on the first base. The front and rear sides of the guide frame are respectively provided with lugs for the first support roller assembly to be installed.

[0025] As a further improvement to the above solution, the first roller assembly includes a first roller shaft and a roller rotatably mounted on the first roller shaft;

[0026] The first roller shaft passes horizontally through the lug and the roller so that the roller is rotatably mounted on the first guide bracket; the roller is shaped like a waist drum.

[0027] As a further improvement to the above solution, the second roller assembly includes a second roller shaft and a roller rotatably mounted on the second roller shaft;

[0028] One end of the second roller shaft is provided with a limiting part, and the other end is provided with a threaded section; and its other end passes vertically through the top of the roller and the first guide bracket and is fixedly mounted on the first guide bracket by a locking nut.

[0029] As a further improvement to the above solution, the first-stage fixed boom is also provided with a second guide roller assembly that matches the number of reels, for supporting the hose; and the second guide roller assembly is matched and spaced at intervals with the first guide roller assembly.

[0030] The second guide roller assembly includes a second guide bracket and the first roller assembly.

[0031] The second guide bracket includes a second base and support plates vertically arranged on both sides of the second base, and the first roller assembly is arranged between the two support plates.

[0032] As a further improvement to the above solution, the fixed spray pipe is mounted on the first-stage fixed arm section by a number of fixed brackets;

[0033] The fixed spray pipe includes a spray pipe body, a second blocking plate disposed at one end of the spray pipe body, and a pipe connector disposed at the other end of the spray pipe body. The pipe connector is used to connect to the cooling medium inlet.

[0034] The bottom of the spray pipe body is provided with several spray nozzles at intervals.

[0035] As a further improvement to the above solution, the first-stage fixed boom is hinged to the equipment platform via a boom hinge seat, the reel is disposed behind the boom hinge seat via a reel support, and N-1 reels are spaced apart on the equipment platform for connecting to the cooling medium inlet.

[0036] Secondly, the present invention also provides a water jet cutting device, including the telescopic arm with self-spraying cooling provided in the first aspect, wherein the front end of the telescopic arm is provided with a water jet cutting device.

[0037] Because the present invention adopts the above technical solutions, the beneficial effects of this application are as follows:

[0038] 1. This invention provides a telescopic boom with self-spraying cooling, comprising N-1 reels, a primary fixed boom section, and N-1 telescopic boom sections sequentially telescopically connected within the primary fixed boom section. The primary fixed boom section is equipped with a fixed spray pipe, which has several spray nozzles spaced apart for spraying cooling medium onto the primary fixed boom section. The reels are wound with flexible hoses through which the cooling medium flows. Each telescopic boom section is equipped with a telescopic spray pipe, one end of which is supported on the primary fixed boom section and connected to a hose on the corresponding reel, while the other end is supported on the corresponding telescopic boom section. The telescopic spray pipe extends and retracts with the telescopic boom section, and the telescopic spray pipe has several spray nozzles spaced apart. Used to spray cooling medium onto the corresponding telescopic boom section; where N is an integer greater than 1; In this invention, a telescopic spray pipe is set on each telescopic boom section, one end of which is supported on the first-stage fixed boom section and connected to the hose on the corresponding reel, and the other end is supported on the corresponding telescopic boom section. This arrangement allows each stage of the telescopic spray pipe to extend and retract along with the telescopic boom section. At the same time, several spray nozzles are spaced apart at the bottom of the telescopic spray pipe and the fixed spray pipe, so that the cooling medium can be transported and sprayed onto the corresponding boom section, thereby achieving full coverage cooling spraying of the entire telescopic boom, reducing the temperature of the entire telescopic boom and preventing its mechanical properties from being reduced due to high temperature.

[0039] 2. This invention provides a telescopic boom with self-spraying cooling. To ensure the telescopic spray pipe can smoothly extend and retract along with the telescopic boom section, an obstacle-crossing roller assembly is provided at the end of the telescopic spray pipe near the reel, and an obstacle-crossing guide structure is provided at the end of the first-stage fixed boom section and / or the telescopic boom section away from the reel. The obstacle-crossing guide structure includes a first obstacle-crossing member and a second obstacle-crossing member. The first obstacle-crossing member is inclined upwards to the end of the first-stage fixed boom section and / or the telescopic boom section, and the second obstacle-crossing member is inclined downwards to the corresponding end of the first-stage fixed boom section and / or the telescopic boom section. The first and second obstacle-crossing components are paired and matched. With this configuration, when the telescopic boom extends, it drives the corresponding telescopic spray pipe to extend. The obstacle-crossing roller assembly rolls along the uphill first obstacle-crossing component until it crosses the reinforcing rib at the end of the first fixed boom or the telescopic boom. Then, guided by the second obstacle-crossing component, it descends the slope to cross the obstacle. Conversely, when the telescopic boom retracts, it drives the corresponding telescopic spray pipe to retract. The obstacle-crossing roller assembly rolls under the guidance of the second obstacle-crossing component until it crosses the reinforcing rib at the end of the first fixed boom or the telescopic boom. Then, guided by the first obstacle-crossing component, it descends the slope to cross the obstacle.

[0040] 3. This invention provides a telescopic boom with self-spraying cooling. The first-stage fixed boom section and the telescopic boom sections less than the Nth stage are respectively provided with support guide frame assemblies at their ends away from the reel. The support guide frame assembly includes a support bracket and guide rollers. The telescopic spray pipe passes through the support bracket and is placed above the guide rollers, which can easily support the weight of the telescopic spray pipe. The two side surfaces of the support frame and the side surfaces of the guide rollers form limiting surfaces, effectively preventing the telescopic spray pipe from deviating during movement.

[0041] Additionally, the first-stage fixed arm section is provided with a first guide roller assembly matching the number of reels for supporting the hose; in some preferred embodiments, the first-stage fixed arm section is also provided with a second guide roller assembly matching the number of reels for supporting the hose; and the second guide roller assembly and the first guide roller assembly are arranged in a corresponding and spaced manner; the arrangement of the first guide roller assembly and the second guide roller assembly plays a role in stabilizing and guiding the hose extending from the floppy disk as it moves with the corresponding telescopic sprinkler pipe, and can reduce the frictional resistance of the hose during movement, further ensuring the smooth extension and retraction of the telescopic sprinkler pipe;

[0042] The guide rollers on the support guide frame assembly also exhibit rolling friction with the retractable spray pipe, thereby reducing frictional resistance and further improving the smooth extension and retraction of the retractable spray pipe.

[0043] 4. This invention provides a telescopic arm with self-spraying cooling. The telescopic spray pipe includes a support frame, a rigid pipe for the cooling medium to flow through, located at the bottom of the support frame, and an obstacle-crossing roller assembly located at the bottom of the support frame and near the reel end. The obstacle-crossing roller assembly enables the telescopic spray pipe to smoothly cross obstacles and, in conjunction with the support guide frame assembly, ensures stable support at both ends of the telescopic spray pipe. This gives the telescopic spray pipe sufficient rigidity, a simple and reliable structure, and facilitates subsequent maintenance.

[0044] In some preferred embodiments, the support frame includes a vertical plate and a horizontal plate, and the vertical plate is vertically arranged in the middle of the bottom surface of the horizontal plate to form a support frame with a T-shaped cross-section. The rigid tube is arranged at the bottom of the T-shaped support frame, and the two wings of the T-shaped support frame are placed on guide rollers on both sides.

[0045] Preferably, the support frame includes two C-shaped steels arranged opposite to each other, a connecting plate disposed on the top of the two C-shaped steels, and the rigid tube disposed at the bottom of the two C-shaped steels;

[0046] Preferably, the support frame includes two Z-shaped steels arranged opposite to each other, a connecting plate disposed on the top of the two Z-shaped steels, and the rigid tube disposed at the bottom of the two Z-shaped steels;

[0047] The cross-sectional shape of the telescopic spray pipe can be selected in various forms, so that the support frame has good rigidity and is not prone to plastic deformation. The telescopic spray pipe provided by the present invention has a simple structure and can provide sufficient rigidity and strength to ensure that the coolant can smoothly and completely cover each telescopic arm section. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a three-dimensional schematic diagram of a telescopic arm (retracted state) with self-spraying cooling disclosed in this invention. Figure 1 ;

[0050] Figure 2 This is a three-dimensional schematic diagram of a telescopic arm (extended state) with self-spraying cooling disclosed in this invention;

[0051] Figure 3 This is a three-dimensional schematic diagram of a telescopic arm (retracted state) with self-spraying cooling disclosed in this invention. Figure 2 ;

[0052] Figure 4 This is a perspective view of the first guide roller assembly disclosed in this invention;

[0053] Figure 5 This is a three-dimensional schematic diagram of the fixed spray pipe disclosed in this invention;

[0054] Figure 6 This is a three-dimensional schematic diagram of the first retractable spray pipe disclosed in this invention;

[0055] Figure 7 This is a three-dimensional schematic diagram of the second retractable spray pipe disclosed in this invention;

[0056] Figure 8 This is a partially enlarged three-dimensional schematic diagram of the obstacle-crossing guidance structure disclosed in this invention, wherein... Figure 8 (a) is a partially enlarged three-dimensional schematic diagram of the guide structure for crossing obstacles when the second retractable sprinkler pipe is extended. Figure 8 (b) A partially enlarged three-dimensional schematic diagram of the guide structure for crossing obstacles when the second retractable sprinkler pipe retracts;

[0057] Figure 9 This is a partial cross-sectional view of the retractable spray pipe disclosed in this invention, which is installed in the support guide frame assembly.

[0058] Figure 10 This is a front view schematic diagram of the retractable spray pipe disclosed in this invention, wherein... Figure 10 (a) is a front view schematic diagram of the first type of retractable sprinkler pipe. Figure 10 (b) is a front view schematic diagram of the second type of retractable sprinkler pipe. Figure 10 (c) is a front view schematic diagram of the third type of retractable sprinkler pipe.

[0059] Figure label:

[0060] 1. Reel; 2. First fixed boom section; 3a. First telescopic boom section; 3b. Second telescopic boom section; 4. Fixed sprinkler pipe; 41. Sprinkler pipe body; 42. Second blocking plate; 43. Pipe connector;

[0061] 5. Spray nozzle;

[0062] 6a. First retractable sprinkler pipe; 6b. Second retractable sprinkler pipe; 61. Support frame; 62. Rigid pipe; 63. Obstacle-crossing roller assembly; 64. First blocking plate; 65. First connector;

[0063] 7. Sprinkler pipe connector;

[0064] 8. Obstacle-crossing guidance structure; 81. First obstacle-crossing component; 82. Second obstacle-crossing component;

[0065] 9. Support guide frame assembly; 91. Support bracket; 92. Guide rollers;

[0066] 10. First guide roller assembly; 101. First guide bracket; 101-1. First base; 101-2. Portal guide frame; 101-3. Support lug;

[0067] 102. First support roller assembly; 102-1. First support roller shaft; 102-2. Support roller;

[0068] 103. Second support roller assembly; 103-1. Second support roller shaft;

[0069] 11. Second guide roller assembly; 111. Second guide bracket; 111-1. Second base; 111-2. Support plate;

[0070] 12. Fixed bracket; 13. Boom hinge seat; 14. Drum support; 15. Flexible hose.

[0071] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0072] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0073] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0074] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0075] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention. Example 1

[0076] See Figures 1-10 This invention provides a telescopic boom with self-spraying cooling, comprising N-1 reels 1, a primary fixed boom section 2, and N-1 telescopic boom sections sequentially telescopically connected within the primary fixed boom section 2. The primary fixed boom section 2 is equipped with a fixed spray pipe 4, and the fixed spray pipe 4 is provided with a plurality of spray nozzles 5 spaced apart for spraying cooling medium onto the primary fixed boom section 2. A flexible hose 15 for the cooling medium to flow through is wound on the reels 1. In this embodiment, see [reference needed]. Figure 1 and Figure 2 It is equipped with 3 boom sections, that is, it needs to be equipped with 2 levels of telescopic boom sections and two reels 1; for ease of explanation, the boom section fitted inside the first level fixed boom section 2 is named the first telescopic boom section 3a, and the boom section fitted inside the first telescopic boom section 3a is named the second telescopic boom section 3b.

[0077] The telescopic boom is equipped with a telescopic spray pipe. One end of the telescopic spray pipe is supported on the first-stage fixed boom 2 and connected to the hose 15 on the corresponding reel 1. The other end is supported on the corresponding telescopic boom. In this embodiment, the first telescopic boom 3a is equipped with a first telescopic spray pipe 6a. One end of the first telescopic spray pipe 6a is connected to the hose 15 on one of the reels 1, and the other end is supported on the end of the first telescopic boom 3a away from the reel 1. The second telescopic boom 3b is equipped with a second telescopic spray pipe 6b. One end of the second telescopic spray pipe 6b is connected to the hose 15 on another reel 1, and the other end is supported on the end of the second telescopic boom 3b away from the reel 1.

[0078] The retractable spray pipe extends and retracts along with the retractable arm section. The retractable spray pipe is provided with a plurality of spray nozzles 5 spaced apart for spraying cooling medium onto the corresponding retractable arm section; where N is an integer greater than 1. In this embodiment, the bottoms of the first retractable spray pipe 6a and the second retractable spray pipe 6b are respectively provided with a plurality of spray nozzles 5 spaced apart. In use, by introducing cooling medium into the medium inlet of the flexible hose 15 and the fixed spray pipe 4, the cooling medium can be sprayed onto the corresponding retractable arm section through the spray nozzles 5 along with the extension of the retractable arm section to cool it down.

[0079] In this invention, a telescopic spray pipe is provided on each telescopic boom section. One end of the telescopic spray pipe is supported on the first fixed boom section 2 and connected to the hose 15 on the corresponding reel 1, while the other end is supported on the corresponding telescopic boom section. This arrangement allows each telescopic spray pipe to extend and retract along with the telescopic boom section. At the same time, several spray nozzles 5 are provided at intervals at the bottom of the telescopic spray pipe and the fixed spray pipe 4, so that the cooling medium can be transported and sprayed onto the corresponding boom section, thereby achieving full coverage cooling spraying of the entire telescopic boom. This can reduce the temperature of the entire telescopic boom and prevent its mechanical properties from being reduced due to high temperature.

[0080] As a preferred embodiment, see Figure 3 The telescopic boom section is provided with a spray pipe connecting frame 7 at the end away from the reel 1, which is used to support and connect the corresponding telescopic spray pipe; in this embodiment, the spray pipe connecting frame 7 is set at the end of the telescopic boom section away from the reel 1 by welding.

[0081] The other end of the telescopic spray pipe is fixedly connected to the corresponding telescopic arm section through the spray pipe connecting frame 7.

[0082] Specifically, a first connecting plate is provided at the end of the first retractable spray pipe 6a away from the flexible hose 15, and one end of the rigid pipe 62 passes through the first connecting plate and extends beyond the first connecting plate by a set length; correspondingly, a through hole is provided in the middle of the spray pipe connecting frame 7 on the first retractable arm 3a for the extended end of the rigid pipe 62 to pass through, and the first connecting plate is fastened to the spray pipe connecting frame 7 by screws.

[0083] The end of the second retractable spray pipe 6b away from the end of the hose 15 is provided with a second connecting plate, and the second connecting plate is fastened to the corresponding spray pipe connecting frame 7 by screws.

[0084] It should be noted that the middle part of the spray pipe connecting frame 7 of the telescopic arm section does not need to be provided with a through hole for the rigid pipe 62 to pass through.

[0085] As a preferred embodiment, see Figure 6 and Figure 7 The retractable spray pipe includes a support frame 61, a rigid pipe 62 for cooling medium to flow through, which is disposed at the bottom of the support frame 61, and an obstacle-crossing roller assembly 63.

[0086] The bottom of the rigid tube 62 is provided with a plurality of spray nozzles 5 at intervals;

[0087] The obstacle-crossing roller assembly 63 is disposed at the bottom of the support frame 61 and located near the end of the reel 1;

[0088] The rigid tube 62 has a first blocking plate 64 at the end away from the reel 1 and a first connector 65 for connecting to the flexible tube 15 at the end near the reel 1.

[0089] For details, see Figure 9 and Figure 10 In some embodiments, see Figure 10 (a) The support frame 61 includes a vertical plate and a horizontal plate, and the vertical plate is vertically arranged in the middle of the bottom surface of the horizontal plate to form a support frame 61 with a T-shaped cross-section. The rigid tube 62 is arranged at the bottom of the T-shaped support frame 61, and the two wings of the T-shaped support frame 61 are placed on the guide rollers 92 on both sides.

[0090] In some embodiments, see Figure 10 (b) The support frame 61 includes two C-shaped steels arranged opposite to each other, a connecting plate arranged on the top of the two C-shaped steels, and the rigid tube 62 is arranged at the bottom of the two C-shaped steels;

[0091] In some embodiments, see Figure 10 (c) The support frame 61 includes two Z-shaped steels arranged opposite to each other, a connecting plate arranged on the top of the two Z-shaped steels, and the rigid tube 62 is arranged at the bottom of the two Z-shaped steels;

[0092] The connecting plate can be a single plate or at least two connecting plates of a preset width. The two connecting plates of the preset width are respectively set at both ends of the C-shaped steel / Z-shaped steel and are fixedly connected by welding.

[0093] The cross-sectional shape of the telescopic spray pipe can be selected in various forms, so that the support frame 61 has good rigidity and is not easy to undergo plastic deformation. The telescopic spray pipe provided by the present invention has a simple structure and can provide sufficient rigidity and strength to ensure that the coolant can smoothly and completely cover each telescopic arm section.

[0094] The obstacle-crossing roller assembly 63 enables the retractable spray pipe to smoothly cross obstacles. In addition, in conjunction with the support guide frame assembly 9, it ensures that both ends of the retractable spray pipe have stable support, thereby giving the retractable spray pipe sufficient rigidity, a simple and reliable structure, and easy maintenance in the future.

[0095] Specifically, the first-stage fixed arm section 2 and / or the telescopic arm section are provided with an obstacle-crossing guide structure 8 at the end away from the reel 1, so that the obstacle-crossing roller assembly 63 on the telescopic arm section can cross the entire first-stage fixed arm section 2 or the previous telescopic arm section. Specifically, the obstacle-crossing guide structure 8 is flexibly selected according to the number of arm sections included in the telescopic arm. In this embodiment, with three arm sections, only the obstacle-crossing guide structure 8 needs to be provided at the end of the first-stage fixed arm section 2 away from the reel 1, so that the obstacle-crossing roller assembly 63 on the second telescopic arm section 3b can cross the entire first-stage fixed arm section 2, and no need to set it on the other telescopic arm sections. If there are four arm sections, the obstacle-crossing guide structure 8 needs to be provided at the ends of the first-stage fixed arm section 2 and the first telescopic arm section 3a away from the reel 1, so that the obstacle-crossing roller assembly 63 on the second telescopic arm section 3b can cross the entire first-stage fixed arm section 2, the obstacle-crossing roller assembly 63 on the third telescopic arm section can cross the entire first telescopic arm section 3a, and so on.

[0096] Preferably, the obstacle-crossing roller assembly 63 includes an obstacle-crossing connecting plate and a rolling bearing disposed on the obstacle-crossing connecting plate. One end of the obstacle-crossing connecting plate is vertically welded to the bottom of the support frame 61. The rolling bearing is rotatably disposed on the obstacle-crossing connecting plate by means of bolts. As the corresponding telescopic spray pipe extends and retracts, the obstacle-crossing roller assembly 63 rolls on the upper surface of the corresponding arm section until it moves to the obstacle-crossing guide structure 8, and successfully crosses the obstacle under the guidance of the obstacle-crossing guide structure 8.

[0097] As a preferred embodiment, see Figure 3 and Figure 8 The obstacle-crossing guidance structure 8 includes a first obstacle-crossing component 81 and a second obstacle-crossing component 82. The first obstacle-crossing component 81 is inclinedly connected to the end of the first-stage fixed arm section 2 and / or the telescopic arm section in an upward slope. The second obstacle-crossing component 82 is inclinedly connected to the corresponding end of the first-stage fixed arm section 2 and / or the telescopic arm section in a downward slope. The first obstacle-crossing component 81 and the second obstacle-crossing component 82 are matched in pairs.

[0098] Preferably, the first obstacle-crossing component 81 is a plate with a set thickness; the second obstacle-crossing component 82 includes a flat plate segment and an inclined plate segment integrally connected to the flat plate segment, and the vertical projection height of the inclined plate segment is less than or equal to the drop between the corresponding adjacent arm segments.

[0099] With this configuration, when the telescopic boom extends, it drives the corresponding telescopic spray pipe to extend as well. The obstacle-crossing roller assembly 63 rolls along the uphill first obstacle-crossing member 81 until it crosses the reinforcing rib at the end of the first fixed boom 2 or the telescopic boom. Then, guided by the second obstacle-crossing member 82, it descends the slope to cross the obstacle. Conversely, when the telescopic boom retracts, it drives the corresponding telescopic spray pipe to retract as well. The obstacle-crossing roller assembly 63 rolls and moves under the guidance of the second obstacle-crossing member 82 until it crosses the reinforcing rib at the end of the first fixed boom 2 or the telescopic boom. Then, guided by the first obstacle-crossing member 81, it descends the slope to cross the obstacle.

[0100] As a preferred embodiment, see Figure 1 and Figure 9 The first-level fixed boom section 2 and the telescopic boom sections less than the Nth level are respectively provided with support guide frame assemblies 9 at the ends away from the reel 1, where N is an integer greater than 1;

[0101] The support guide frame assembly 9 includes a support bracket 91 and guide rollers 92 respectively disposed on both sides inside the support bracket 91. The support bracket 91 is fixedly mounted on the corresponding first-stage fixed arm section 2 and telescopic arm section. The telescopic spray pipe passes through the support bracket 91 and is positioned above the guide rollers 92. This arrangement can easily support the weight of the telescopic spray pipe. The two side surfaces of the support frame 61 and the side surfaces of the guide rollers 92 form limiting surfaces, which can effectively prevent the position of the telescopic spray pipe from deviating during movement. The guide rollers 92 make the contact between the telescopic spray pipe and the support guide frame assembly 9 a rolling friction, thereby reducing frictional resistance and further improving the smooth extension and retraction of the telescopic spray pipe.

[0102] The support guide frame assembly 9, in conjunction with the obstacle-crossing roller assembly 63, provides stable support at both ends of the retractable spray pipe, thereby giving the retractable spray pipe sufficient rigidity.

[0103] As a preferred embodiment, see Figure 1 and Figure 4 The first fixed arm section 2 is provided with a first guide roller assembly 10 matching the number of reels 1, for supporting the hose 15;

[0104] The first guide roller assembly 10 includes a first guide bracket 101, a first roller assembly 102, and a second roller assembly 103;

[0105] The first guide bracket 101 is provided with the first support roller assembly 102 on the front and rear sides respectively, and the first support roller assembly 102 is arranged horizontally;

[0106] The first guide bracket 101 has a second roller assembly 103 on its left and right sides respectively inside, and the second roller assembly 103 is vertically suspended on the top inner side of the first guide bracket 101;

[0107] The space between the two first roller assemblies 102 and the two second roller assemblies 103 constitutes a guide support space through which the hose 15 passes;

[0108] Preferably, the first guide bracket 101 includes a first base 101-1 and a portal guide frame 101-2 disposed on the first base 101-1. The front and rear sides of the guide frame are respectively provided with lugs 101-3 for the first support roller assembly 102 to be installed.

[0109] Preferably, the first roller assembly 102 includes a first roller shaft 102-1 and a roller 102-2 rotatably disposed on the first roller shaft 102-1;

[0110] The first roller shaft 102-1 passes horizontally through the lug 101-3 and the roller 102-2 so that the roller 102-2 is rotatably mounted on the first guide bracket 101; the roller 102-2 is shaped like a waist drum.

[0111] Preferably, the second roller assembly 103 includes a second roller shaft 103-1 and a roller 102-2 rotatably disposed on the second roller shaft 103-1;

[0112] The second roller shaft 103-1 has a limiting part at one end and a threaded section at the other end; and its other end passes vertically through the top of the roller 102-2 and the first guide bracket 101 and is fixedly mounted on the first guide bracket 101 by a locking nut;

[0113] The first guide roller assembly 10 provides stable support and guidance for the hose 15 extending from the floppy disk as it moves with the corresponding retractable spray pipe, and reduces the frictional resistance of the hose 15 during movement, thus ensuring the smooth extension and retraction of the retractable spray pipe.

[0114] As a preferred embodiment, see Figure 1 The first-stage fixed arm section 2 is also provided with a second guide roller assembly 11 matching the number of reels 1, for supporting the hose 15; and the second guide roller assembly 11 is matched and matched with the first guide roller assembly 10 at intervals.

[0115] The second guide roller assembly 11 includes a second guide bracket 111 and a first roller assembly 102.

[0116] The second guide bracket 111 includes a second base 111-1 and support plates 111-2 vertically arranged on both sides of the second base 111-1, and the first roller assembly 102 is arranged between the two support plates 111-2;

[0117] The second guide roller assembly 11 provides stable support and guidance for the hose 15 extending from the floppy disk as it moves with the corresponding retractable spray pipe, and reduces the frictional resistance of the hose 15 during movement, further ensuring the smooth extension and retraction of the retractable spray pipe. Furthermore, the matching spacing between the second guide roller assembly 11 and the first guide roller assembly 10 ensures the smooth extension and retraction of the retractable spray pipe while effectively preventing the hose 15 from contacting the surface of the boom section and thus avoiding wear on the hose 15.

[0118] As a preferred embodiment, see Figure 1 and Figure 5 The fixed spray pipe 4 is mounted on the first-stage fixed arm section 2 by a number of fixed brackets 12;

[0119] The fixed spray pipe 4 includes a spray pipe body 41, a second blocking plate 42 disposed at one end of the spray pipe body 41, and a pipe connector 43 disposed at the other end of the spray pipe body 41. The pipe connector 43 is used to connect to the cooling medium inlet. The bottom of the spray pipe body 41 is provided with a plurality of spray nozzles 5 at intervals. The fixed spray pipe 4 can effectively spray and cool the first-stage fixed arm section 2.

[0120] As a preferred embodiment, see Figure 1 and Figure 2 The first-stage fixed boom section 2 is hinged to the equipment platform via boom hinge 13. The reel 1 is disposed behind the boom hinge 13 via a reel support 14, and N-1 reels 1 are spaced apart on the equipment platform for connecting to the cooling medium inlet. In this embodiment, two reels 1 are respectively spaced apart behind the boom hinge 13 via reel supports 14 so as to connect to the corresponding first telescopic spray pipe 6a or second telescopic spray pipe 6b.

[0121] In this embodiment, the reel 1 is a spring reel with a self-resetting function. When the hose 15 extends, it can be tensioned. When the hose 15 retracts with the telescopic spray pipe, the reel automatically reverses the winding, so that the hose 15 is stored and wound on the reel 1. Example 2

[0122] The present invention also provides a water jet cutting device, including a telescopic arm with self-spraying cooling as described in Embodiment 1, wherein the front end of the telescopic arm is provided with a water jet cutting device.

[0123] The telescopic arm with self-spraying cooling allows for comprehensive spraying of cooling medium to the telescopic arm during operation, thereby reducing the adverse effects of high-temperature environments on the water jet cutting equipment.

[0124] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A telescopic arm with self-spraying cooling, characterized in that, It includes N-1 reels, a first-stage fixed arm section, and N-1 telescopic arms sections that are telescopically connected to the first-stage fixed arm section. The first-stage fixed arm section is equipped with a fixed spray pipe with several spray nozzles spaced apart on it for spraying cooling medium onto the first-stage fixed arm section. The reels are wound with a flexible hose through which the cooling medium flows. The telescopic boom is equipped with a telescopic spray pipe. One end of the telescopic spray pipe is supported on the first fixed boom and connected to the hose on the corresponding reel, while the other end is supported on the corresponding telescopic boom. The telescopic spray pipe extends and retracts along with the telescopic boom section. The telescopic spray pipe is provided with a number of spray nozzles at intervals for spraying cooling medium onto the corresponding telescopic boom section; where N is an integer greater than 1. The retractable spray pipe includes a support frame, a rigid pipe through which the cooling medium flows, located at the bottom of the support frame, and an obstacle-crossing roller assembly. The bottom of the rigid tube is provided with several spray nozzles at intervals; The obstacle-crossing roller assembly is located at the bottom of the support frame and near the reel end; The rigid tube has a first endplate at the end away from the reel and a first connector for connecting to the flexible tube at the end near the reel. The first-stage fixed boom and / or the telescopic boom are provided with an obstacle-crossing guide structure at the end away from the reel, so that the obstacle-crossing roller assembly on the telescopic boom can cross the entire first-stage fixed boom or the previous telescopic boom. The first-level fixed boom and the telescopic boom of less than the Nth level are respectively provided with support guide frame assemblies at the ends away from the reel. The support guide frame assembly includes a support bracket and guide rollers respectively disposed on both sides inside the support bracket; the support bracket is fixedly disposed on the corresponding first-stage fixed arm section and telescopic arm section, and the telescopic spray pipe passes through the support bracket and is positioned above the guide rollers.

2. The telescopic boom with self-spraying cooling according to claim 1, characterized in that, The obstacle-crossing guidance structure includes a first obstacle-crossing component and a second obstacle-crossing component. The first obstacle-crossing component is inclinedly connected to the end of the first-stage fixed arm segment and / or the telescopic arm segment in an upward slope. The second obstacle-crossing component is inclinedly connected to the corresponding end of the first-stage fixed arm segment and / or the telescopic arm segment in a downward slope. Furthermore, the first obstacle-crossing component and the second obstacle-crossing component are configured in pairs.

3. A telescopic boom with self-spraying cooling as described in claim 1 or 2, characterized in that, The first-stage fixed boom is provided with a first guide roller assembly that matches the number of reels, for supporting the hose; The first guide roller assembly includes a first guide bracket, a first roller assembly, and a second roller assembly; The first guide bracket is provided with the first roller assembly on the front and rear sides respectively, and the first roller assembly is arranged horizontally. The first guide bracket has a second roller assembly on its left and right sides, respectively, and the second roller assembly is vertically suspended on the top inner side of the first guide bracket; The space between the two first roller assemblies and the two second roller assemblies forms a guide support space through which the hose passes.

4. A telescopic boom with self-spraying cooling as described in claim 3, characterized in that, The first-stage fixed boom is also provided with a second guide roller assembly that matches the number of reels, for supporting the hose; and the second guide roller assembly is matched and spaced at intervals with the first guide roller assembly. The second guide roller assembly includes a second guide bracket and the first roller assembly. The second guide bracket includes a second base and support plates vertically arranged on both sides of the second base, and the first roller assembly is arranged between the two support plates.

5. A telescopic boom with self-spraying cooling as described in claim 1 or 2, characterized in that, The fixed spray pipe is mounted on the first-stage fixed arm section by several fixed brackets; The fixed spray pipe includes a spray pipe body, a second blocking plate disposed at one end of the spray pipe body, and a pipe connector disposed at the other end of the spray pipe body. The pipe connector is used to connect to the cooling medium inlet. The bottom of the spray pipe body is provided with several spray nozzles at intervals.

6. A telescopic boom with self-spraying cooling as described in claim 1 or 2, characterized in that, The first-stage fixed boom is hinged to the equipment platform via a boom hinge seat. The reel is located behind the boom hinge seat via a reel support, and N-1 reels are spaced apart on the equipment platform for connecting to the cooling medium inlet.

7. A water jet cutting device, characterized in that, The invention includes a telescopic arm with self-spraying cooling as described in any one of claims 1-6, wherein the front end of the telescopic arm is provided with a water jet sandblasting cutting device.

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