Boom module and engineering machine

Abstract

The application relates to the field of engineering machinery and discloses an arm frame module and engineering machinery. The arm frame module comprises a telescopic arm frame and a drag chain device; the telescopic arm frame comprises a basic arm and at least one telescopic section arm slidingly arranged in the basic arm, and the tail of the basic arm is provided with a detachable tail closing plate; the drag chain device comprises a drag chain guide assembly and a first drag chain body, the drag chain guide assembly is arranged in the telescopic section arm at the tail end, one end of the drag chain guide assembly is detachably connected with the arm head of the telescopic section arm at the tail end, the other end of the drag chain guide assembly is detachably connected with the arm tail of the telescopic section arm at the tail end, one end of the first drag chain body is fixedly connected with the end of the drag chain guide assembly close to the arm tail of the basic arm, and the other end of the first drag chain body is detachably mounted on the inner wall of the basic arm at the abdomen; and the abdomen of the basic arm is provided with an openable maintenance window. The arm frame module provided by the application is simple and efficient, saves manpower and material resources, and does not need to disassemble the telescopic arm frame itself when the drag chain device is disassembled and assembled.

Description

Technical Field

[0001] This application belongs to the field of construction machinery, specifically relating to a boom module and construction machinery. Background Technology

[0002] Vehicle-mounted aerial work platforms are widely used in municipal engineering, warehousing, maintenance, and construction industries. Currently, most aerial work platform telescopic booms employ a very compact design, which presents challenges for component disassembly, assembly, and maintenance. To save internal space, most aerial work platforms place the cable chain assembly on the outside of the telescopic boom; however, externally mounted cable chains are prone to aging and damage. Therefore, an internal cable chain assembly provides better protection than an external one.

[0003] In actual use, when it comes to the disassembly and maintenance of the built-in cable chain device, since the cable chain is usually designed to run through multiple telescopic arms and is fixed in sections to the inner wall or support beam of each arm or base arm with bolts or rigid connectors, due to the limitations of installation location and space, it is necessary to disassemble each telescopic arm, which leads to the problem of complicated disassembly and assembly process and low disassembly and assembly efficiency. Utility Model Content

[0004] The purpose of this application is to provide a boom module and engineering machinery to solve the problems of complex disassembly and assembly processes and low disassembly and assembly efficiency of existing cable chain devices built into the boom.

[0005] To achieve the above objectives, the first aspect of this application provides a boom module, comprising: A telescopic boom includes a base boom and at least one telescopic boom section slidably disposed within the base boom, wherein the tail of the base boom is provided with a detachable tail end plate. A cable chain device includes a cable chain guide assembly and a first cable chain body. The cable chain guide assembly is disposed inside the telescopic arm located at the end section. One end of the cable chain guide assembly is detachably connected to the arm head of the telescopic arm located at the end section, and the other end is detachably connected to the arm tail of the telescopic arm located at the end section. One end of the first cable chain body is fixedly connected to the end of the cable chain guide assembly near the arm tail of the base arm, and the other end is bent and extends toward the arm head of the base arm and is detachably mounted on the inner wall of the base arm located on the abdomen. The basic arm has an openable inspection window on its underside, which is arranged corresponding to the detachable installation position of the first cable chain body and the basic arm.

[0006] As a further improvement to the above technical solution: In some embodiments, the basic arm is provided with multiple telescopic arms, the multiple telescopic arms including a first telescopic arm, a second telescopic arm, a third telescopic arm and a fourth telescopic arm that are fitted together from the outside to the inside, wherein the first telescopic arm is defined as being located at the first section position and the fourth telescopic arm is defined as being located at the last section position. The cable chain device further includes a first limiting frame, which is detachably mounted on the tail of the first telescopic arm, and the first cable chain body passes through the first limiting frame.

[0007] In some embodiments, the first limiting frame includes a mounting base, a first limiting roller, and a second limiting roller; The mounting base is detachably mounted on the tail of the first telescopic arm. Two support plates extend from the mounting base. The two support plates are aligned along the width direction of the first drag chain body. The first limiting roller and the second limiting roller are spaced apart on the support plates along the thickness direction of the first drag chain body. The first limiting roller, the second limiting roller, and the two supporting uprights together form a first limiting space through which the first drag chain body passes.

[0008] In some embodiments, the first limiting frame further includes a guide roller shaft; Among them, the two supporting uprights have guide arms extending from one end away from the first limiting roller shaft and from the side near the arm tail of the basic arm, respectively. The guide roller shaft is disposed on the guide arm and rolls in cooperation with the inner curved surface of the first drag chain body.

[0009] In some embodiments, the cable chain guiding assembly includes a first guide frame, a second cable chain body, and a second guide frame; The first guide frame is arranged inside the fourth telescopic arm and extends along the length of the fourth telescopic arm. One end of the first guide frame is detachably connected to the head of the fourth telescopic arm, and the other end is detachably connected to the tail of the fourth telescopic arm. The second guide frame is arranged above the first guide frame. One end of the second guide frame is detachably mounted on the tail of the second telescopic arm and connected to the first cable chain body, while the other end extends into the fourth telescopic arm. The second cable chain body is arranged between the second guide frame and the first guide frame. One end of the second cable chain body is connected to the end of the first guide frame near the tail of the fourth telescopic arm, and the other end is bent and connected to the end of the second guide frame away from the tail of the second telescopic arm.

[0010] In some embodiments, the fourth telescopic arm has a transition mounting plate extending along its length at its tail end, and the transition mounting plate is detachably connected to the fourth telescopic arm. The first guide frame is connected to the tail of the fourth telescopic arm via the transition mounting plate.

[0011] In some embodiments, the second guide frame includes a guide frame body and a transition frame; The guide frame body is arranged above the first guide frame, and one end of the guide frame body away from the tail of the second telescopic joint arm is detachably connected to the second drag chain body. The transition frame is connected to one end of the guide frame body near the tail of the second telescopic joint arm, and the transition frame is detachably mounted on the tail of the second telescopic joint arm. The width of the transition frame gradually increases from the connection point between the transition frame and the guide frame body to the tail of the second telescopic joint arm.

[0012] In some embodiments, the transition frame is provided with lugs on both sides, the wide surface of the lugs faces the tail of the basic arm and the wide surface of the lugs is also provided with mounting holes, and the end face of the tail of the second telescopic arm is provided with threaded holes corresponding to the mounting holes. The lug is detachably connected to the end face of the arm tail of the second telescopic arm via fasteners.

[0013] In some embodiments, the cable chain device further includes a second limiting frame, which is detachably disposed on the end face of the arm tail of the third telescopic arm. A second limiting space is formed in the middle of the second limiting frame for the guide frame body to pass through, and the second limiting space is clearance-fitted with the guide frame body. The connection point formed by the transition frame and the second telescopic arm is defined as the first connection point, and the connection point formed by the second limiting frame and the third telescopic arm is defined as the second connection point. The first connection point is located below the second connection point when projected along the length direction of the basic arm.

[0014] To achieve the above objectives, a second aspect of this application provides an engineering machine including a boom assembly, the boom assembly including a boom module according to the first aspect described above.

[0015] Compared with the prior art, the boom module and engineering machinery provided in this application have at least the following beneficial effects: The boom module provided in this application integrates a cable chain device within the telescopic boom. One end of the cable chain guide assembly is detachably connected to the boom head of the telescopic boom at the end section, and the other end is detachably connected to the boom tail of the telescopic boom at the end section. One end of the first cable chain body is fixedly connected to the end of the cable chain guide assembly near the boom tail of the base boom, and the other end is bent and extends towards the boom head of the base boom and is detachably mounted on the inner wall of the base boom's belly. Furthermore, a detachable tail seal plate is provided at the boom tail of the base boom, and an inspection window is provided on the belly of the base boom. Thus, when assembling or disassembling the entire cable chain device, the tail seal plate can be removed first to facilitate the installation or removal of the cable chain guide assembly and the boom tail of the telescopic boom at the end section from the tail of the base boom. The first cable chain body and the base boom can also be installed or removed through the inspection window. The cable chain guide assembly and the boom head of the telescopic boom at the end section can be directly installed or removed through the gap at the boom head. Thus, during disassembly, after the aforementioned connections are disassembled, the entire cable carrier assembly can be removed from the tail of the base boom and subsequently reinstalled as a whole with the tail of the base boom. Therefore, the boom module provided in this application eliminates the need to disassemble the telescopic boom itself when removing or installing the cable carrier assembly, making disassembly and assembly simpler and more efficient, saving manpower and resources.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 A partial structural diagram of the boom head of a boom module in a retracted state, provided in an embodiment of this application; Figure 2 A partial structural diagram of the abdominal position of the boom head of a boom module in a retracted state, provided in an embodiment of this application; Figure 3 This is a three-dimensional structural diagram of a cable chain device provided in an embodiment of this application; Figure 4 for Figure 3 A schematic diagram of a partial structure of the cable chain device near the tail of the main arm. Figure 5 A three-dimensional structural diagram of the first limiting frame in the cable chain device provided in the embodiments of this application; Figure 6A schematic diagram of the assembly structure of the first limiting frame and the first telescopic arm in the telescopic boom provided in the embodiments of this application; Figure 7 A schematic diagram of the assembly structure of the cable chain device and the fourth telescopic arm in the telescopic boom provided in the embodiments of this application; Figure 8 for Figure 7 A magnified view of a portion of point A in the middle; Figure 9 This is a schematic diagram of the structure of a transition mounting plate provided in an embodiment of this application; Figure 10 This is a schematic diagram of the assembly structure of the second limiting frame and the third telescopic arm in the telescopic boom of the cable chain device provided in the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures 100. Telescopic boom; 110. Basic boom; 111. Inspection window; 120. Telescopic boom section; 121. First telescopic boom section; 122. Second telescopic boom section; 123. Third telescopic boom section; 124. Fourth telescopic boom section; 130. Transition mounting plate; 131. Extension plate; 132. First mounting side plate; 1320. First mounting hole; 133. Second mounting side plate; 1330. Second mounting hole; 200. Cable chain device; 210. Cable chain guide assembly; 211. First guide frame; 2110. Extension plate; 2111. Bending section; 212. Second cable chain body; 213. Second guide frame; 2130. Guide frame body; 2131. Transition frame; 2132. Lug; 220. First cable chain body; 230. First limiting frame; 230a. First limiting space; 231. Mounting base; 2310. Support plate; 2310a. Bending section; 2311. Guide arm; 232. First limiting roller; 233. Second limiting roller; 235. Guide roller; 240. Second limiting frame; B1, first connection point; B2, second connection point. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0021] Example 1 Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a boom module that can be applied to the boom assembly of construction machinery.

[0022] The boom module includes a telescopic boom 100 and a cable chain device 200; the telescopic boom 100 includes a base boom 110 and at least one telescopic boom 120 slidably disposed within the base boom 110, the tail of the base boom 110 is provided with a detachable tail end plate, and the telescopic boom 120 is inserted into the base boom 110 and can slide out or retract along the length direction of the base boom 110.

[0023] The cable chain device 200 includes a cable chain guide assembly 210 and a first cable chain body 220. The cable chain guide assembly 210 is disposed within the telescopic joint arm 120 located at the end section. One end of the cable chain guide assembly 210 is detachably connected to the head of the telescopic joint arm 120 located at the end section, and the other end is detachably connected to the tail of the telescopic joint arm 120 located at the end section. The cable chain guide assembly 210 and the telescopic joint arm 120 located at the end section are detachably connected using fasteners (screws or bolts).

[0024] Please refer to the following: Figure 4 One end of the first cable chain body 220 is fixedly connected to the end of the cable chain guide assembly 210 near the tail of the base arm 110 using fasteners, such as screws, bolts, snap-fits, or riveting. The other end of the first cable chain body 220 is bent and extends towards the head of the base arm 110 and is detachably mounted on the inner wall of the base arm 110 located on its belly. The detachable connection between the other end of the first cable chain body 220 and the inner wall of the base arm 110 located on its belly can be achieved using screws or bolts.

[0025] In this embodiment, the underside of the basic arm 110 is provided with an openable inspection window 111 (e.g., Figure 2 As shown, the inspection window 111 is arranged at the detachable mounting position of the first cable chain body 220 and the basic boom 110. The inspection window 111 includes an inspection port and a detachable inspection cover plate installed on the inspection port. Thus, when disassembling or assembling the boom, the inspection cover plate is first removed, thereby opening the inspection window 111, and then the first cable chain body 220 on the basic boom 110 can be disassembled or assembled through the inspection window 111. When the telescopic boom 100 is in normal use, the inspection cover plate remains closed.

[0026] The boom module provided in this embodiment allows for the installation or removal of the cable chain guide assembly 210 and the tail of the telescopic joint arm 120 from the tail of the base boom 110 during the disassembly and assembly of the entire cable chain device 200. Furthermore, the first cable chain body 220 and the base boom 110 can be installed or removed through the open inspection window 111. The cable chain guide assembly 210 and the head of the telescopic joint arm 120 located at the tail can be directly installed or removed through the gap at the head. Thus, during disassembly, after the aforementioned connections are disassembled, the entire cable chain device 200 can be removed entirely from the tail of the base boom 110, and subsequently reinstalled entirely from the tail of the base boom 110.

[0027] Compared with the prior art, the boom module provided in this embodiment does not require the telescopic boom 100 itself to be dismantled when the cable chain device 200 is dismantled or installed, making dismantling and assembly simpler and more efficient, and saving manpower and resources.

[0028] Furthermore, this embodiment also provides an engineering machinery. The engineering machinery includes a boom assembly, which includes the boom module provided above. Optionally, the engineering machinery may be an aerial work platform.

[0029] Please see Figures 1 to 4 This embodiment also provides a method for assembling and disassembling the cable chain device 200, applicable to the boom module or the construction machinery provided above. The method includes a method for disassembling the cable chain device 200 and / or a method for installing the cable chain device 200.

[0030] The disassembly method for the aforementioned cable chain device 200 includes the following steps: S100: Open inspection window 111 and remove the tail end plate located at the tail of the basic boom 110.

[0031] It should be noted that, considering that the boom module is initially in a retracted position, the space under the boom module may be insufficient. Therefore, when disassembling and repairing the sealing plate, the boom module can be controlled to perform a boom lifting action to raise the boom module to a certain angle so that personnel can enter under the boom module to carry out operations.

[0032] S110: Disconnect the cable chain guide assembly 210 from the head of the telescopic arm 120 and from the tail of the base arm 110 respectively.

[0033] Understandably, after the tail seal plate on the tail of the basic boom 110 is removed, the tail of the basic boom 110 becomes an open area. At this time, the installation position between the cable chain guide assembly 210 and the telescopic boom 120 located at the end section can be clearly seen through the tail of the basic boom 110, thus facilitating manual disassembly. The head of the telescopic boom at the end section also provides operating space to facilitate the disassembly of the cable chain guide assembly 210 located at the end section of the telescopic boom.

[0034] S120: Disconnect the first cable chain body 220 from the base arm 110 through the inspection window 111. Since the position of the inspection window 111 corresponds to the installation position of the first cable chain body 220 and the base arm 110, a person can reach into the inspection window 111 to disassemble the first cable chain body 220 installed on the base arm 110.

[0035] S130: Remove the entire cable chain assembly 200 from the tail of the base arm 110. After the above disassembly is completed, the entire cable chain assembly 200 has no connection point. Since the cross-sectional dimensions of the base arm 110 are the largest among all the telescopic arms 120, the disassembled cable chain assembly 200 can be removed from the tail of the base arm 110, and the cable chain assembly 200 can also be installed from the tail of the base arm 110 later.

[0036] The installation method of the above-mentioned cable chain device 200 includes the following steps: S200: Prepare the cable chain device 200 to be installed; S210: Open the tail cover of the basic arm 110 and insert the cable chain device 200 to be installed from the tail of the basic arm 110. S220: Connect and fix the cable chain guide assembly 210 to the telescopic joint arm 120 from the head of the telescopic joint arm 120 and from the tail of the basic arm 110 respectively. S230: Open the inspection window 111 and connect and fix the first cable chain body 220 to the basic arm 110; S240: Finally, close the inspection window 111 and install the tail seal.

[0037] Understandably, the installation method for the cable chain device 200 described above is the reverse of the disassembly method for the cable chain described above. After the cable chain device 200 is disassembled, the maintained or new cable chain device 200 is installed using the above installation method. During installation, the inspection cover and tail seal are in the open state, saving the opening action. Furthermore, the steps in the installation method for the cable chain device 200 and the disassembly method described above do not have a clearly defined order; some actions can be performed concurrently or simultaneously when multiple people are working together.

[0038] Example 2 Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a boom module that can be applied to the boom assembly of construction machinery. This embodiment is an improvement on the technology of Embodiment 1 described above. The difference between this embodiment and Embodiment 1 is as follows: In this embodiment, the basic arm 110 is provided with multiple telescopic arms 120. The multiple telescopic arms 120 include a first telescopic arm 121, a second telescopic arm 122, a third telescopic arm 123, and a fourth telescopic arm 124, which are fitted together from the outside to the inside. The first telescopic arm 121 is defined as being located at the first section position, that is, the telescopic arm 120 located at the first section; the fourth telescopic arm 124 is defined as being located at the last section position, that is, the telescopic arm 120 located at the last section.

[0039] Please refer to the following: Figure 4 , Figure 5 and Figure 6 The cable chain device 200 also includes a first limiting frame 230, which is detachably mounted on the tail of the first telescopic arm 121. The first cable chain body 220 passes through the first limiting frame 230. Thus, the first limiting frame 230 can limit and guide the first cable chain body 220, and also provide effective support for the first cable chain body 220, preventing it from swaying and interfering with the second telescopic arm 122 during movement. Furthermore, when disassembling the cable chain device 200, the first limiting frame 230 must be removed first to avoid interference with the cable chain's movement.

[0040] In this embodiment, as Figure 5 As shown, the first limiting frame 230 includes a mounting base 231, a first limiting roller 232, and a second limiting roller 233. The mounting base 231 is detachably mounted on the tail of the first telescopic arm 121 (e.g., detachably connected by screws or bolts). Two support plates 2310 extend from the mounting base 231. The two support plates 2310 are aligned along the width direction of the first cable chain body 220. The first limiting roller 232 and the second limiting roller 233 are spaced apart on the support plates 2310 along the thickness direction of the first cable chain body 220. The first limiting roller 232, the second limiting roller 233, and the two support plates 2310 together form a first limiting space 230a for the first cable chain body 220 to pass through.

[0041] Thus, the first limiting space 230a formed by the above structure allows the first cable chain body 220 to pass through, thereby limiting, guiding, and supporting the first cable chain body 220. Specifically, the two support plates 2310 can limit the width of the first cable chain body 220 on both sides, the lower first limiting roller 232 can limit and support the first cable chain body 220 at the lower end, and the upper second limiting roller 233 can limit and support the first cable chain body 220 at the upper end.

[0042] The first limiting roller shaft 232 and the second limiting roller shaft 233 are provided with roller portions that roll in cooperation with the first drag chain body 220, so as to reduce the friction during the movement of the first drag chain body 220, avoid wear during the movement of the first drag chain body 220, and thus extend its service life.

[0043] Please see Figure 4 and Figure 5 In some embodiments, the support plate 2310 has a bending portion 2310a on both sides along its width direction. The bending portion 2310a bends away from the support plate 2310 on the opposite side to avoid the sharp edge of the support plate 2310 from causing wear and damage to the first drag chain body 220.

[0044] Please see Figure 4 , Figure 5 and Figure 6 Furthermore, the first limiting frame 230 also includes a guide roller shaft 235. Guide arms 2311 extend from the ends of the two supporting uprights 2310 away from the first limiting roller shaft 232 and from the side near the arm tail of the basic arm 110. The guide roller shaft 235 is mounted on the guide arms 2311 and rolls in engagement with the curved inner surface of the first cable chain body 220. The guide roller shaft 235 has a roller portion that rolls in engagement with the first cable chain body 220 to reduce friction during the movement of the first cable chain body 220, prevent wear on the first cable chain body 220, and extend its service life.

[0045] Please see Figure 3 , Figure 4 and Figure 7 In this embodiment, the cable chain guide assembly 210 includes a first guide frame 211, a second cable chain body 212, and a second guide frame 213. The first guide frame 211 is arranged inside the fourth telescopic arm 124 and extends along the length of the fourth telescopic arm 124. One end of the first guide frame 211 is detachably connected to the head of the fourth telescopic arm 124, and the other end is detachably connected to the tail of the fourth telescopic arm 124. Fasteners, such as screws or bolts, can be used to achieve the detachable connection.

[0046] The second guide frame 213 is positioned above the first guide frame 211. One end of the second guide frame 213 is detachably mounted on the tail of the second telescopic arm 122 and connected to the first cable chain body 220. The other end extends into the fourth telescopic arm 124 for connection with the second cable chain body 212. The second cable chain body 212 is positioned between the second guide frame 213 and the first guide frame 211. One end of the second cable chain body 212 is connected to the end of the first guide frame 211 near the tail of the fourth telescopic arm 124, while the other end is bent and connected to the end of the second guide frame 213 away from the tail of the second telescopic arm 122. Thus, the second guide frame 213 and the first guide frame 211 can move relative to each other via the second cable chain body 212, satisfying the relative movement requirements between the second telescopic arm 122 and the fourth telescopic arm 124, thereby improving the effective protection of pipelines or lines.

[0047] Please see Figure 7 and Figure 8 The fourth telescopic arm 124 has a transition mounting plate 130 extending along its length at its tail. The transition mounting plate 130 is detachably connected to the fourth telescopic arm 124. The first guide frame 211 is connected to the tail of the fourth telescopic arm 124 via the transition mounting plate 130, and the connection method can be screw or bolt. It should be noted that since the fourth telescopic arm 124 is the last arm, the space between the tail of the fourth telescopic arm 124 and the tail of the basic arm 110 is small and the distance is large. Therefore, in this embodiment, the transition mounting plate 130 is provided so that the connection end of the first guide frame 211 with the transition mounting plate 130 is closer to the tail of the basic arm 110, thereby facilitating manual assembly and disassembly of the first guide frame 211 through the tail of the basic arm 110.

[0048] Please refer to the following: Figure 9 Furthermore, the transition mounting plate 130 includes an extension plate body 131 and a first mounting side plate 132 and a second mounting side plate 133 respectively welded to both ends of the extension plate body 131. The wide surfaces of the first mounting side plate 132 and the second mounting side plate 133 are perpendicular to the extension plate body 131, and the first mounting side plate 132 and the second mounting side plate 133 both extend along the width direction of the extension plate body 131.

[0049] The first mounting side plate 132 has two first mounting holes 1320 spaced apart along the width direction of the extension plate 131, and the second mounting side plate 133 has two second mounting holes 1330 spaced apart along the width direction of the extension plate 131. The two first mounting holes 1320 are used for detachable connection to the fourth telescopic arm 124 via fasteners (screws or bolts), and the two second mounting holes 1330 are used for detachable connection to the end of the first guide frame 211 near the tail of the basic arm 110 via screws or bolts. In this embodiment, the first guide frame 211 has an extension plate 2110 at the end near the tail of the basic arm 110. The end of the extension plate 2110 away from the first guide frame 211 has a bent portion 2111 that mates with the second mounting side plate 133, and the bent portion 2111 has a third mounting hole corresponding to the second mounting holes 1330.

[0050] In some embodiments, the width dimension of the first mounting side plate 132 along the width direction of the extension plate 131 is greater than the width dimension of the second mounting side plate 133 along the width direction of the extension plate 131, wherein the hole spacing of the two first mounting holes 1320 is greater than the width of the second mounting side plate 133, so as to provide clearance for subsequent disassembly and avoid interference between the disassembly tool and the second mounting side plate 133.

[0051] Please see Figure 3 , Figure 4 and Figure 10 The cable chain device 200 also includes a second limiting frame 240, which is detachably mounted on the third telescopic arm 123. A second limiting space is formed in the middle of the second limiting frame 240 for the second guide frame 213 to pass through. The second limiting space and the second guide frame 213 are in clearance fit.

[0052] Specifically, the end face of the second limiting frame 240 and the arm tail of the third telescopic arm 123 are detachably connected by screws or bolts, and the second limiting frame 240 can provide sliding support.

[0053] Please see Figure 4 , Figure 7 and Figure 10 The second guide frame 213 includes a guide frame body 2130 and a transition frame 2131. The guide frame body 2130 is arranged above the first guide frame 211, and the cross-section of the guide frame body 2130 is rectangular. The guide frame body 2130 slides through the second limiting frame 240.

[0054] The guide frame body 2130, at the end furthest from the second telescopic arm 122, is detachably connected to the second cable chain body 212. A transition frame 2131 is connected to the guide frame body 2130 near the end of the second telescopic arm 122 (e.g., by welding or bolting), and is detachably mounted on the end of the second telescopic arm 122. The width of the transition frame 2131 gradually increases from the connection point between the transition frame 2131 and the guide frame body 2130 to the end of the second telescopic arm 122.

[0055] Understandably, since the fourth telescopic arm 124 and the third telescopic arm 123 are sequentially housed within the second telescopic arm 122, the cross-sectional dimensions of the second telescopic arm 122 must be larger than those of the fourth telescopic arm 124. In order to ensure that the second guide frame 213 can be stably installed on the second telescopic arm 122 without affecting the assembly and disassembly of the cable chain device 200, the width of the transition frame 2131 is gradually increased to match the cross-sectional width of the second telescopic arm 122, providing stable support for the installation of the second guide frame 213. This also facilitates the smooth extension of the transition frame 2131 into the fourth telescopic arm 124 to connect with the guide frame body 2130.

[0056] In this embodiment, as Figure 4 As shown, the transition frame 2131 has lugs 2132 on both sides. The wide surface of the lugs 2132 faces the tail of the basic arm 110, and the wide surface of the lugs 2132 also has mounting holes. For clarity, the mounting holes on the wide surface of the lugs 2132 are defined as the fourth mounting holes. The end face of the tail of the second telescopic arm 122 has a threaded hole corresponding to the fourth mounting hole, so as to facilitate the detachable connection between the lugs 2132 and the end face of the tail of the second telescopic arm 122 by fasteners. The fasteners can be screws or bolts. The screws or bolts pass through the fourth mounting hole and engage with the threaded hole at the tail of the second telescopic arm 122 to install the transition frame 2131 and the second telescopic arm 122. Since the wide surface of the lugs 2132 faces the tail of the basic arm 110, it facilitates the subsequent assembly and disassembly of the transition frame 2131 and the second telescopic arm 122.

[0057] Please see Figure 7 and Figure 10Furthermore, the connection point formed by the transition frame 2131 and the second telescopic arm 122 is defined as the first connection point B1 (the position connected by screws or bolts is defined as the connection point), and the connection point formed by the second limiting frame 240 and the third telescopic arm 123 is defined as the second connection point B2. Projected along the length of the basic arm 110, the first connection point B1 is located below the second connection point B2. This achieves a staggered arrangement of the first connection point B1 and the second connection point B2 to prevent interference between the tools and the second limiting frame 240 during disassembly and installation, while also facilitating disassembly.

[0058] Please see Figures 1 to 10 This embodiment also provides a method for assembling and disassembling the cable chain device 200, applicable to the boom module or the construction machinery provided above. The method includes a method for disassembling the cable chain device 200 and / or a method for installing the cable chain device 200.

[0059] Compared to Embodiment 1 above, in the disassembly method of the cable chain device 200, step S110 further includes: dismantling the connection between the first limiting frame 230 and the first telescopic section arm 121 from the arm tail of the basic arm 110; dismantling the connection between the extension plate 2110 of the first guide frame 211 and the second mounting side plate 133 on the fourth telescopic section arm 124; dismantling the connection between the transition frame 2131 on the second guide frame 213 and the second telescopic section arm 122; and dismantling the connection between the second limiting frame 240 and the third telescopic section arm 123. It should be understood that there is no specific order in the above disassembly process, and disassembly can be carried out reasonably according to requirements.

[0060] Compared to Embodiment 1 above, in the installation method of the cable chain device 200, step S220 further includes: installing the first limiting frame 230 from the tail of the basic arm 110 onto the first telescopic section arm 121; installing the extension plate 2110 of the first guide frame 211 onto the second mounting side plate 133 of the fourth telescopic section arm 124; installing the transition frame 2131 on the second guide frame 213 onto the second telescopic section arm 122; and installing the second limiting frame 240 onto the third telescopic section arm 123. It should be understood that there is no specific order in the above installation process, and installation can be carried out reasonably according to requirements.

[0061] It should be noted that, to avoid interference between tools and components in the boom module during disassembly and assembly, the connection points of the first limiting frame 230 and the first telescopic boom 121, the connection points of the extension plate 2110 of the first guide frame 211 and the second mounting side plate 133 on the fourth telescopic boom 124, the connection points of the transition frame 2131 on the second guide frame 213 and the second telescopic boom 122, and the connection points of the second limiting frame 240 and the third telescopic boom 123 can be arranged in layers and staggered on the projection plane along the length direction of the basic boom 110. The connection points are the positions where screws or bolts are installed.

[0062] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0063] The structures of the first drag chain body 220 and the second drag chain body 212 described above are well known to those skilled in the art and are not part of the core improvements of this application, so they will not be described in detail here.

[0064] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A boom module, characterized in that, include: The telescopic boom (100) includes a base boom (110) and at least one telescopic boom (120) slidably disposed within the base boom (110), wherein the base boom (110) is provided with a detachable tail end plate. A cable chain device (200) includes a cable chain guide assembly (210) and a first cable chain body (220). The cable chain guide assembly (210) is disposed in the telescopic joint arm (120) located at the end section. One end of the cable chain guide assembly (210) is detachably connected to the arm head of the telescopic joint arm (120) located at the end section, and the other end is detachably connected to the arm tail of the telescopic joint arm (120) located at the end section. One end of the first cable chain body (220) is fixedly connected to the end of the cable chain guide assembly (210) near the arm tail of the basic arm (110), and the other end is bent and extends toward the arm head of the basic arm (110) and is detachably mounted on the inner wall of the basic arm (110) located on the abdomen. The basic arm (110) has an openable inspection window (111) on its belly, and the inspection window (111) is arranged in relation to the detachable installation position of the first cable chain body (220) and the basic arm (110).

2. The boom module according to claim 1, characterized in that, The basic arm (110) is provided with multiple telescopic arms (120), and the multiple telescopic arms (120) include a first telescopic arm (121), a second telescopic arm (122), a third telescopic arm (123) and a fourth telescopic arm (124) that are fitted together from the outside to the inside. The first telescopic arm (121) is defined as being located at the first section position, and the fourth telescopic arm (124) is located at the last section position. The cable chain device (200) further includes a first limiting frame (230), which is detachably mounted on the tail of the first telescopic arm (121), and the first cable chain body (220) is arranged through the first limiting frame (230).

3. The boom module according to claim 2, characterized in that, The first limiting frame (230) includes a mounting base (231), a first limiting roller (232), and a second limiting roller (233); The mounting base (231) is detachably mounted on the tail of the first telescopic joint arm (121). Two support plates (2310) extend from the mounting base (231). The two support plates (2310) are aligned along the width direction of the first drag chain body (220). The first limiting roller (232) and the second limiting roller (233) are spaced apart on the support plates (2310) along the thickness direction of the first drag chain body (220). The first limiting roller (232), the second limiting roller (233), and the two support plates (2310) together form a first limiting space (230a) through which the first drag chain body (220) passes.

4. The boom module according to claim 3, characterized in that, The first limiting frame (230) also includes a guide roller (235); Among them, the two support plates (2310) extend guide arms (2311) at one end away from the first limiting roller shaft (232) and on the side near the arm tail of the basic arm (110). The guide roller shaft (235) is disposed on the guide arm (2311) and the guide roller shaft (235) rolls with the curved inner side of the first drag chain body (220).

5. The boom module according to claim 2, characterized in that, The cable chain guide assembly (210) includes a first guide frame (211), a second cable chain body (212), and a second guide frame (213). The first guide frame (211) is arranged inside the fourth telescopic arm (124) and extends along the length direction of the fourth telescopic arm (124). One end of the first guide frame (211) is detachably connected to the head of the fourth telescopic arm (124), and the other end is detachably connected to the tail of the fourth telescopic arm (124). The second guide frame (213) is arranged above the first guide frame (211). One end of the second guide frame (213) is detachably mounted on the tail of the second telescopic arm (122) and connected to the first drag chain body (220). The other end extends into the fourth telescopic arm (124). The second cable chain body (212) is arranged between the second guide frame (213) and the first guide frame (211). One end of the second cable chain body (212) is connected to the end of the first guide frame (211) near the tail of the fourth telescopic arm (124), and the other end is bent and connected to the end of the second guide frame (213) away from the tail of the second telescopic arm (122).

6. The boom module according to claim 5, characterized in that, The fourth telescopic arm (124) has a transition mounting plate (130) extending along the length direction at its tail end. The transition mounting plate (130) is detachably connected to the fourth telescopic arm (124). The first guide frame (211) is connected to the tail of the fourth telescopic arm (124) via the transition mounting plate (130).

7. The boom module according to any one of claims 5-6, characterized in that, The second guide frame (213) includes a guide frame body (2130) and a transition frame (2131). The guide frame body (2130) is arranged above the first guide frame (211), and the end of the guide frame body (2130) away from the tail of the second telescopic joint arm (122) is detachably connected to the second drag chain body (212). The transition frame (2131) is connected to one end of the guide frame body (2130) near the tail of the second telescopic joint arm (122), and the transition frame (2131) is detachably mounted on the tail of the second telescopic joint arm (122). In the direction from the connection between the transition frame (2131) and the guide frame body (2130) to the tail of the second telescopic joint arm (122), the width of the transition frame (2131) gradually increases.

8. The boom module according to claim 7, characterized in that, The transition frame (2131) is provided with lugs (2132) on both sides respectively. The wide surface of the lugs (2132) faces the arm tail of the basic arm (110) and the wide surface of the lugs (2132) is also provided with mounting holes. The end face of the arm tail of the second telescopic arm (122) is provided with threaded holes corresponding to the mounting holes. The lug (2132) and the end face of the arm tail of the second telescopic arm (122) are detachably connected by fasteners.

9. The boom module according to claim 7, characterized in that, The cable chain device (200) further includes a second limiting frame (240), which is detachably mounted on the end face of the arm tail of the third telescopic arm (123). A second limiting space is formed in the middle of the second limiting frame (240) for the guide frame body (2130) to pass through. The second limiting space is clearance-fitted with the guide frame body (2130). The connection point formed by the transition frame (2131) and the second telescopic arm (122) is defined as the first connection point (B1), and the connection point formed by the second limit frame (240) and the third telescopic arm (123) is defined as the second connection point (B2). The first connection point (B1) is formed below the second connection point (B2) when projected along the length direction of the basic arm (110).

10. An engineering machinery, characterized in that, It includes a boom assembly, the boom assembly comprising a boom module according to any one of claims 1-9.

Images