Rail transit maintenance vehicles and rail transit systems

Abstract

This application relates to the field of rail transit technology, providing a maintenance vehicle and a rail transit system. The maintenance vehicle includes a travel platform, a boom mechanism, and a tree trimming device. The travel platform is used to travel on the track; the boom mechanism includes multiple working arms, which are sequentially hinged and mutually driven to drive the movement of the last working arm, with the first working arm located on the travel platform; the tree trimming device includes a drive assembly and a trimmer, the drive assembly being detachably connected to the last working arm, and the drive assembly drivingly cooperating with the trimmer, which is used to trim foreign objects near the track; the maintenance vehicle includes a first working state, in which the boom mechanism is in a retracted state, and the drive assembly drives the trimmer to move.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a rail transit maintenance vehicle and a rail transit system. Background Technology

[0002] In the field of train technology, the Skybus is a small-capacity rubber-tired tram system that does not occupy road resources and has independent right-of-way. When the Skybus travels through cities, tree branches and leaves can touch it when they grow thick, requiring regular manual maintenance of the Skybus's clearance and other maintenance work to ensure its normal operation. Currently, the Skybus clearance maintenance is done by maintenance personnel using specialized equipment to prune tree branches along the Skybus's route, which consumes significant manpower, resources, and time. Utility Model Content

[0003] In view of this, the embodiments of this application aim to provide a maintenance vehicle and rail transit system for rail transit that can perform maintenance operations such as pruning tree branches, thereby improving work efficiency.

[0004] A first aspect of this application provides a maintenance vehicle for rail transit, the maintenance vehicle comprising:

[0005] A travel platform used for traveling on tracks;

[0006] The boom mechanism includes multiple booms, each boom being sequentially hinged and driven to cooperate with each other to drive the movement of the last boom, and the first boom being mounted on the travel platform;

[0007] A tree branch trimming device includes a drive assembly and a trimmer. The drive assembly is detachably connected to the last working arm and is driven in conjunction with the trimmer, which is used to trim foreign objects near the track.

[0008] The maintenance vehicle includes a first working state, in which the boom mechanism is in a retracted state and the drive assembly drives the cutter to move.

[0009] In some embodiments, in the first working state, the last of the working arms is lower than the other working arms.

[0010] In some embodiments, the maintenance vehicle further includes:

[0011] In the first working state, the last working arm and the driving platform are detachably connected to the locking mechanism.

[0012] In some embodiments, the locking mechanism is provided with a positioning groove that extends horizontally and is open on one side in the vertical direction to form an inlet and outlet, through which the last working arm can enter and exit the positioning groove.

[0013] In some embodiments, the locking mechanism includes:

[0014] The support section is used to support the working arm;

[0015] A fixing part is located below the bearing part, and the fixing part can be detachably connected to the horizontal edge of the travel platform;

[0016] At least two mounting parts are disposed above the support part and the two mounting parts are spaced apart. The mounting parts and the support part together form a positioning groove. The mounting parts are detachably connected to the last working arm.

[0017] In some embodiments, the last of the working arms includes a first part, in the first working state, the first part of the last of the working arms is suspended outside the travel platform, and the drive assembly is detachably disposed on the first part.

[0018] In some embodiments, the drive assembly includes a first support base and a first drive device, the first drive device being disposed on the first support base and drivingly cooperating with the cutter; the maintenance vehicle further includes a first pin and a second pin, and the boom mechanism further includes a drive cylinder, the drive cylinder being hinged to the last working arm; in the first working state, the drive cylinder is rotatably connected to the first support base via the first pin, and the first support base is rotatably connected to the last working arm via the second pin.

[0019] In some embodiments, in the first operating state, the last of the operating arms is located at one end of the traveling platform along its traveling direction, and the first support base is horizontal relative to the rotation axis of the last of the operating arms.

[0020] In some embodiments, the maintenance vehicle further includes:

[0021] The maintenance work platform and the drive assembly can be selectively and detachably connected to the last working arm;

[0022] The maintenance vehicle also includes a second working state, in which the maintenance work platform is detachably connected to the last working arm, and the boom mechanism drives the maintenance work platform to move.

[0023] A second aspect of this application provides a rail transit system, including:

[0024] track;

[0025] The maintenance vehicle described in any one of the embodiments of this application travels on the track.

[0026] The rail transit maintenance vehicle and rail transit system provided in this application embodiment have a drive assembly detachably connected to the last working arm. This allows for the installation of a tree-pruning device using the existing boom mechanism of the maintenance vehicle, expanding the vehicle's application range and reducing costs. In the first working state, the pruner can be driven solely by the drive assembly to prune branches without requiring the boom mechanism to move, thus reducing energy consumption during operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a rail transit system according to one embodiment of this application;

[0028] Figure 2 This is a partial top view of a maintenance vehicle according to an embodiment of this application;

[0029] Figure 3 for Figure 2 A partial structural schematic diagram of the maintenance vehicle shown;

[0030] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0031] Figure 5 This is a schematic diagram of the locking mechanism in one embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the last working arm, the first support base, and the first driving device in one embodiment of this application;

[0033] Figure 7 for Figure 6 Front view;

[0034] Figure 8 for Figure 6 A schematic diagram of the structure of the first support base and the first driving device shown;

[0035] Figure 9 for Figure 8 Front view;

[0036] Figure 10 This is a schematic diagram of the last working arm, the second support base, and the second drive device in one embodiment of this application.

[0037] Figure 11 for Figure 10The diagram shows the structure of the second support base and the second drive device.

[0038] Figure 12 for Figure 1 Enlarged diagram of point A.

[0039] Explanation of reference numerals in the attached figures

[0040] 100. Maintenance vehicle; 10. Traveling platform; 11. Support platform; 12. Traveling mechanism; 13. Fence; 13a. Opening; 14. Control room; 20. Boom mechanism; 30. Tree branch trimming device; 201. First boom; 202. Second boom; 203. Rocker arm; 204. Upper turntable; 205. Third boom; 206. Fourth boom; 207. Fifth boom; 2071. First section; 101. First luffing cylinder; 102. First leveling cylinder; 103. Second luffing cylinder; 104. Second leveling cylinder; 105. Connecting Lever mechanism; 106, Third luffing cylinder; 107, Third leveling cylinder; 211, Working arm; 22, Drive cylinder; 31, Drive assembly; 311, First support base; 312, First drive device; 32, Cutter; 40, Locking mechanism; 41, Positioning groove; 41a, Inlet / outlet; 42, Bearing part; 43, Fixing part; 44, Mounting part; 45, First fastener; 46, Second fastener; 71, Second support base; 72, Second drive device; 1000, Rail transit system; 200, Track; 300, Control room; X, Direction of travel. Detailed Implementation

[0041] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0042] It should be noted that in the embodiments of this application, the orientations or positional relationships such as "upper," "lower," and "end" are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0044] In the embodiments of this application, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium.

[0045] In the description of this specification, references to terms such as "some embodiments," "exemplary," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments 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 the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0046] In the field of train technology, the Skybus is a small-capacity rubber-tired tram system that does not occupy road resources and has independent right-of-way. When the Skybus travels through cities, tree branches and leaves can touch it when they grow thick, requiring regular manual maintenance of the Skybus's clearance and other maintenance work to ensure its normal operation. Currently, the Skybus clearance maintenance is done by maintenance personnel pruning tree branches along the Skybus's route from a maintenance vehicle, which consumes significant manpower, resources, and time.

[0047] In view of this, please refer to Figure 1 and Figure 2 This application provides a maintenance vehicle 100 for rail transit, which can perform maintenance tasks such as pruning tree branches, thereby improving work efficiency.

[0048] The maintenance vehicle 100 includes a travel platform 10, a boom mechanism 20, and a tree branch trimming device 30. The travel platform 10 is used to travel on the track 200.

[0049] For example, the traveling platform 10 has a traveling mechanism 12 and a support platform 11. The support platform 11 is disposed on the traveling mechanism 12 and is capable of supporting the boom mechanism 20. It is understood that the maintenance vehicle 100 is capable of traveling back and forth along the track 200 of the cloud bus system.

[0050] The boom mechanism 20 includes multiple booms 211, which are sequentially hinged and mutually driven to drive the movement of the last boom 211. The first boom 201 is mounted on the traveling platform 10. The first boom 211 is the first boom 201. The last boom 211 is the fifth boom 207.

[0051] For example, please refer to Figure 1 The traveling platform 10 also includes a control room 14, located at one end of the support platform 11 along the traveling direction X. Exemplarily, the first working arm 201 is located at the end of the traveling platform 10 along its traveling direction X near the control room 14. For example, please refer to [link to example]. Figure 2 The driving platform 10 includes a fence 13, which has an opening 13a, and the last working arm 211 is located at the opening 13a.

[0052] The tree branch trimming device 30 includes a drive assembly 31 and a trimmer 32. The drive assembly 31 is detachably connected to the last working arm 211. The drive assembly 31 and the trimmer 32 are driven together. The trimmer 32 is used to trim foreign objects near the track 200. The specific type of foreign object is not limited, such as tree branches surrounding the track 200. The trimmer 32 can be used to trim tree branches and other foreign objects. When the branches and leaves of trees grow too thickly, they can adversely affect the operation of the cloud bus. By using the trimmer 32 during the operation of the maintenance vehicle 100, the branches can be trimmed to reduce the interference of branches on the subsequent operation of the cloud bus. During the operation of the travel platform 10 on the track 200, the drive assembly 31 drives the trimmer 32 to move in space to trim tree branches and other foreign objects.

[0053] The maintenance vehicle 100 includes a first working state, in which the boom mechanism 20 is in a retracted state and the drive assembly 31 drives the cutter 32 to move.

[0054] Understandably, the boom mechanism 20 is equipped with a driver that drives the two working booms 211 that are hinged to each other to rotate relative to each other.

[0055] When the boom mechanism 20 is in the retracted state, it means that the driver does not apply driving force to the working arms 211, and each working arm 211 in the boom mechanism 20 is in a naturally retracted state.

[0056] For example, in the first working state, the last working arm 211 is located at one end of the traveling platform 10 along its traveling direction X, for example, the last working arm 211 is located at the end of the traveling platform 10 away from the control room 14 along its traveling direction X.

[0057] The detachable connection between the tree-pruning device 30 and the boom mechanism 20 is achieved through the detachable connection between the drive assembly 31 and the working arm 211. That is, when tree-pruning operations need to be performed by the maintenance vehicle 100, the tree-pruning device 30 is connected to the boom mechanism 20; while when the maintenance vehicle 100 performs other tasks, the tree-pruning device 30 can be separated from the boom mechanism 20 so that other devices can be connected to the boom mechanism 20.

[0058] The maintenance vehicle 100 provided in this application embodiment has a drive assembly 31 detachably connected to the last working arm 211. This allows the installation of a tree-pruning device 30 using the existing boom mechanism 20 of the maintenance vehicle 100, expanding the scope of application of the maintenance vehicle 100 and reducing costs. In the first working state, the pruner 32 can be moved solely by the drive assembly 31 to prune branches, without requiring the boom mechanism 20 to move, which helps reduce energy consumption during operation.

[0059] It is understandable that when the tree branch trimming device 30 is connected to the boom mechanism 20, the boom mechanism 20 provides power to the tree branch trimming device 30, such as electrical energy or hydraulic oil, in order to simplify the structure of the maintenance vehicle 100.

[0060] In some embodiments, the maintenance vehicle 100 includes a third operating state in which the boom mechanism 20 is connected to the tree branch trimming device 30 and the boom mechanism 20 is in an extended state. This facilitates further expansion of the range of motion of the trimmer 32.

[0061] In some embodiments, please refer to Figure 3 In the first operating state, the last operating arm 211 is lower than the other operating arms. In this way, the height of the drive assembly 31 can be reduced, the center of gravity of the drive assembly 31 and the cutter 32 can be lowered, and the support stability of the cutter 32 when cutting foreign objects can be improved.

[0062] In some embodiments, please refer to Figure 3 and Figure 4 The last working arm 211 includes a first part 2071. In the first working state, the first part 2071 of the last working arm 211 is suspended outside the travel platform 10, and the drive assembly 31 is detachably disposed on the first part 2071.

[0063] In the first working state, the last working arm 211 is fixed at the opening 13a, and the drive assembly 31 can drive the cutter 32 to cut the foreign object on the last working arm 211.

[0064] In some embodiments, please refer to Figure 3 and Figure 4The maintenance vehicle 100 also includes a locking mechanism 40. In the first working state, the last working arm 211 and the travel platform 10 are both detachably connected to the locking mechanism 40. In the first working state, the locking mechanism 40 can lock the last working arm 211 to the travel platform 10. The last working arm 211 can stably support the drive assembly 31 so that the trimmer 32 can perform pruning operations, reducing the load transmitted from the branch trimming device 30 to the boom mechanism 20.

[0065] In other working states, the locking mechanism 40 can be disassembled from the last working arm 211 and the travel platform 10, and the working arm 211 of the boom mechanism 20 can move freely.

[0066] In some embodiments, please refer to Figure 5 The locking mechanism 40 is provided with a positioning groove 41, which runs horizontally through the entire mechanism. One side of the positioning groove 41 is open in the vertical direction, forming an inlet / outlet 41a. The last working arm 211 can enter and exit the positioning groove 41 through the inlet / outlet 41a. By providing the inlet / outlet 41a of the positioning groove 41, it is easier to assemble and connect the locking mechanism 40 with the last working arm 211, reducing assembly difficulty. The inner wall of the positioning groove 41 also serves to limit and guide the working arm 211.

[0067] In some embodiments, please refer to Figure 5 The locking mechanism 40 includes a support portion 42, a fixing portion 43, and at least two mounting portions 44. The support portion 42 supports the working arm; the fixing portion 43 is located below the support portion 42 and can be detachably connected to the horizontal edge of the travel platform 10; at least two mounting portions 44 are disposed above the support portion 42 and spaced apart, the mounting portions 44 and the support portion 42 together form a positioning groove 41, and the mounting portions 44 are detachably connected to the last working arm 211.

[0068] Thus, the fixing part 42, fixing part 43, and mounting part 44 can improve the fixing effect of the locking mechanism 40, the support platform 11, and the last working arm 211. The locking mechanism 40 is easy to disassemble and assemble; the fixing part 43 is located at the edge of the traveling platform 10, which reduces the impact of the disassembly and assembly of the locking mechanism 40 on other devices in the maintenance vehicle 100 and helps to improve its disassembly and assembly efficiency.

[0069] For example, please refer to Figure 5 The locking mechanism 40 also includes a first fastener 45, which is inserted into the fixing part 43 and can be extended and adjusted perpendicular to the through direction of the positioning groove 41 to accommodate different positions of the last working arm 211 in the positioning groove 41 and fix the last working arm 211.

[0070] For example, please refer to Figure 5 The locking mechanism 40 further includes a second fastener 46, which passes through the mounting portion 44 and is used to secure the locking mechanism 40 to the driving platform 10. Exemplarily, the second fastener 46 is a bolt. For some embodiments, please refer to... Figures 6-9 The drive assembly 31 includes a first support base 311 and a first drive device 312. The first drive device 312 is disposed on the first support base 311 and drives the cutter 32.

[0071] The first drive device 312 can be an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, or a rotary reducer, etc.

[0072] The first support 311 is detachably connected to the last working arm 211. The specific method of detachable connection is not limited.

[0073] For example, the maintenance vehicle 100 also includes a first pin and a second pin, and the boom mechanism 20 also includes a drive cylinder 22. The drive cylinder 22 is hinged to the last working arm 211. In the first working state, the drive cylinder 22 is rotatably connected to the first support seat 311 through the first pin, and the first support seat 311 is rotatably connected to the last working arm 211 through the second pin.

[0074] By setting a first pin and a second pin, the difficulty of disassembling and assembling the first support 311 can be reduced, and the disassembly and assembly process can be simplified. The drive cylinder 22 drives the first support 311 to rotate, which can adjust the support angle of the first support 311, thereby adjusting the position of the trimmer 32 to expand the trimming range of the trimmer 32 and facilitate the trimmer 32 to trim branches.

[0075] For example, when the first pin and the second pin are disassembled, the first support 311 and the first drive device 312 can be removed together.

[0076] For example, in the first working state, the last working arm 211 is located at one end of the traveling platform 10 along its traveling direction X, and the first support 311 is horizontal relative to the rotation axis of the last working arm 211. In this way, the rotation angle of the first support 311 in the horizontal direction can be adjusted, thereby adjusting the position and angle of the cutter 32 so that the cutter 32 can expand its cutting range.

[0077] In some embodiments, please refer to Figure 10 and Figure 11 The maintenance vehicle 100 also includes a maintenance work platform, and the maintenance work platform and the drive assembly 31 can be detachably connected to the last working arm 211. The maintenance vehicle 100 also includes a second working state, in which the maintenance work platform is detachably connected to the last working arm 211, and the boom mechanism 20 drives the maintenance work platform to move.

[0078] The maintenance work platform is used for workers to stand and move around. In the second working state, the boom mechanism 20 can drive the maintenance work platform to different positions so that workers inside the maintenance work platform can perform maintenance work.

[0079] In the second working state, the maintenance work platform is mounted on the last working arm 211, and the drive assembly 31 is detached from the last working arm 211. The boom mechanism 20 drives the maintenance work platform to move within its reachable range.

[0080] For example, see Figure 10 and Figure 11 The maintenance work platform includes a second support base 71, a second drive unit 72, and a working platform. The second drive unit 72 is located on the second support base 71 and drives the working platform. The second drive unit 72 can be an electric cylinder, pneumatic cylinder, hydraulic cylinder, or rotary reducer, etc. Maintenance personnel can perform maintenance work on the working platform. The boom mechanism 20 can adjust the position of the maintenance work platform.

[0081] In the second operating state, the drive cylinder 22 is rotatably connected to the second support base 71 via the first pin, and the second support base 71 is rotatably connected to the last operating arm 211 via the second pin.

[0082] The use of the first and second pins reduces the difficulty of disassembling and assembling the second support 71, simplifying the process. Using the same first and second pins facilitates the replacement of both the first and second support 311, reducing the number of parts required for installation. The drive cylinder 22 rotates the second support 71, adjusting its support angle and thus the position of the cutter 32, expanding the reach of the work platform and facilitating maintenance.

[0083] For example, when the first pin and the second pin are disassembled, the second support 71 and the second drive device 72 can be removed together.

[0084] It is understood that the boom mechanism 20 has multiple working arms 211, which are sequentially hinged and driven to cooperate with each other, so that the maintenance work platform can move in the horizontal and vertical directions, thereby expanding the working range of the maintenance work platform.

[0085] In some embodiments, please refer to Figure 12The multiple booms 211 include a first boom 201, a second boom 202, a third boom 205, a fourth boom 206, and a fifth boom 207. The boom mechanism 20 also includes a rocker arm 203, an upper turntable 204, a first luffing cylinder 101, a first leveling cylinder 102, a second luffing cylinder 103, a second leveling cylinder 104, a linkage mechanism 105, a third luffing cylinder 106, and a third leveling cylinder 107. The first boom 201, the second boom 202, and the rocker arm 203 are sequentially hinged. The upper turntable 204 is rotatably connected to the rocker arm 203 so that the upper turntable 204 rotates around the rocker arm 203. The upper turntable 204, the third boom 206, the fourth boom 207, the fifth boom 206, the fifth boom 207, the fifth boom 207, the sixth boom 208, the fifth boom 209, the sixth boom 200, the seventh boom 201, the eighth boom 202, the ninth boom 203, the elliptical boom 204, the elliptical boom 205, the elliptical boom 206, and the elliptical boom 207 are connected in series. The working arm 205, the fourth working arm 206, the linkage mechanism 105, the fifth working arm 207, and the maintenance work platform are sequentially hinged. In the folded state, the rotation center line of the upper turntable 204 around the rocker arm 203 is located at the end of the second working arm 202 away from the first working arm 201. The third working arm 205 is located below the second working arm 202, and the end of the third working arm 205 away from the first working arm 201 is hinged to the upper turntable 204. The fourth working arm 206 is located below the third working arm 205, and the end of the third working arm 205 facing the first working arm 201 is hinged to the fourth working arm 206. The fifth working arm 207 is located at... Below the fourth working arm 206, the end of the fourth working arm 206 facing the first working arm 201 is hinged to the second working arm 202, and the end of the fourth working arm 206 away from the first working arm 201 is hinged to the linkage mechanism 105. Along the length of the fourth working arm 206, the linkage mechanism 105 is located between the fourth working arm 206 and the fifth working arm 207. The first luffing cylinder 101 is hinged to the first working arm 201 and the second working arm 202 respectively. The first leveling cylinder 102 is hinged to the second working arm 202 and the rocker arm 203 respectively. The second luffing cylinder 103 is hinged to the upper turntable 204 and the third working arm 205 respectively. 104 is hinged to the third working arm 205 and the fourth working arm 206 respectively. The third luffing cylinder 106 is hinged to the fourth working arm 206 and the linkage mechanism 105 respectively. The third leveling cylinder 107 is hinged to the fifth working arm 207 and the maintenance work platform respectively. The linkage mechanism 105 is configured to make the fifth working arm 207 translate around the fourth working arm 206. Among them, one of the first leveling cylinder 102 and the third leveling cylinder 107 moves synchronously with the first luffing cylinder 101 to make the maintenance work platform translate around the first working arm 201. The second leveling cylinder 104 moves synchronously with the second luffing cylinder 103 to make the maintenance work platform translate around the first working arm 201.

[0086] Understandably, the fifth working arm 207 forms the last working arm 211.

[0087] With this structure, since the first leveling cylinder 102 and the third leveling cylinder 107 can move synchronously with the first luffing cylinder 101 to make the maintenance work platform translate around the first working arm 201, when the maintenance work platform is in the process of high-altitude operation, the third leveling cylinder 107 and the first luffing cylinder 101 can move synchronously to make the maintenance work platform translate around the first working arm 201.

[0088] During low-altitude operation, the first leveling cylinder 102 and the first luffing cylinder 101 move synchronously to make the maintenance platform translate around the first working arm 201. The first luffing cylinder 101 drives the second working arm 202 to rotate downward around the first working arm 201 at a second angle during low-altitude operation. The rocker arm 203 is correspondingly leveled by the first leveling cylinder 102, thereby making the worktable translate around the first working arm 201. The second angle of rotation of the second working arm 202 does not require leveling by the third leveling cylinder 107. The linkage mechanism 105 can bend downward to increase the depth of the maintenance platform in low-altitude operation. The downward bending angle of the linkage mechanism 105 is the third angle. The connecting mechanism makes the fifth working arm 207 translate around the fourth working arm 206. The linkage mechanism 105 itself has a leveling function, and the third downward bending angle of the linkage mechanism 105 does not require leveling by the third leveling cylinder 107. Since the second leveling cylinder 104 and the second luffing cylinder 103 move synchronously, the maintenance work platform moves around the first working arm 201. When the second luffing cylinder 103 drives the third working arm 205 to rotate around the upper turntable 204 by a certain angle, the second leveling cylinder 104 drives the fourth working arm 206 to rotate around the third working arm 205 by a corresponding angle, thereby leveling the maintenance work platform and keeping it roughly horizontal. The angle at which the second luffing cylinder 103 drives the third working arm 205 to rotate around the upper turntable 204 does not require the third leveling cylinder 107 to level it.

[0089] During high-altitude operations, when the first luffing cylinder 101 drives the second working arm 202 to rotate upwards around the first working arm 201 by a first angle, the third leveling cylinder 107 drives the maintenance platform to rotate around the fifth working arm 207 by a fourth angle to level the maintenance platform, bringing it to a roughly horizontal position. In this way, the second angle of rotation of the second working arm 202 around the first working arm 201 during low-altitude operations, the third angle of rotation of the linkage mechanism 105, and the angle of rotation of the third working arm 205 around the upper turntable 204 driven by the second luffing cylinder 103 do not require the third leveling cylinder 107 to drive the maintenance platform to rotate around the fifth working arm 207 for leveling. This reduces the range of the fourth angle of rotation of the maintenance platform by the third leveling cylinder 107, reduces the stroke and total length of the third leveling cylinder 107, reduces the space required for the extension and retraction of the third leveling cylinder 107, and reduces the length of the fifth working arm 207. This can, to a certain extent, reduce the space occupied by the maintenance platform, contributing to its miniaturization.

[0090] When the second working arm 202 rotates upward by a first angle, allowing the maintenance platform to reach the expected height and working range in the high-altitude operation state, the third leveling cylinder 107 can still drive the maintenance platform to rotate around the fifth working arm 207 within a smaller fourth angle range, even under limited space conditions. This allows for good leveling of the maintenance platform in both high-altitude and low-altitude operation states. Furthermore, the rotation center line of the upper turntable 204 around the rocker arm 203 is located at the end of the second working arm 202 away from the first working arm 201. The third working arm 205 is located below the second working arm 202, with the end of the third working arm 205 away from the first working arm 201 hinged to the upper turntable 204. The fourth working arm 206 is located below the third working arm 205, with the end of the third working arm 205 facing the first working arm 201 hinged to the fourth working arm 206. This arrangement fully utilizes the space below the second working arm 202 to arrange the third working arm 205 and the fourth working arm 206. One end of the fourth working arm 206 facing the first working arm 201 is hinged to the second working arm 202. The other end of the fourth working arm 206 facing away from the first working arm 201 is hinged to the linkage mechanism 105. The fifth working arm 207 is located below the fourth working arm 206. Along the length of the fourth working arm 206, the linkage mechanism 105 is located between the fourth working arm 206 and the fifth working arm 207, so that the linkage mechanism 105 extends downward. The linkage mechanism 105 and the fifth working arm 207 are arranged in the space below the fourth working arm 206. Therefore, the space below the fourth working arm 206 is fully utilized.

[0091] This application also provides a rail transit system 1000, including a track 200 and a maintenance vehicle 100 according to any embodiment of this application. The maintenance vehicle 100 travels on the track 200. The rail transit system 1000 has the same beneficial effects as the maintenance vehicle 100 described above.

[0092] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A maintenance vehicle for rail transport, characterized in that The maintenance vehicle includes: A travel platform used for traveling on tracks; The boom mechanism includes multiple booms, each boom being sequentially hinged and driven to cooperate with each other to drive the movement of the last boom, and the first boom being mounted on the travel platform; A tree branch trimming device includes a drive assembly and a trimmer. The drive assembly is detachably connected to the last working arm and is driven in conjunction with the trimmer, which is used to trim foreign objects near the track. The maintenance vehicle includes a first working state, in which the boom mechanism is in a retracted state and the drive assembly drives the cutter to move.

2. The maintenance vehicle of claim 1, wherein, In the first operating state, the last operating arm is lower than the other operating arms.

3. The maintenance vehicle of claim 1, wherein, The maintenance vehicle also includes: In the first operating state, the last operating arm and the driving platform are detachably connected to the locking mechanism.

4. The maintenance vehicle of claim 3, wherein, The locking mechanism is provided with a positioning groove, which is arranged horizontally and has an opening on one side in the vertical direction to form an inlet and outlet. The last working arm can enter and exit the positioning groove through the inlet and outlet.

5. The maintenance vehicle of claim 4, wherein, The locking mechanism includes: The support section is used to support the working arm; A fixing part is located below the bearing part, and the fixing part can be detachably connected to the horizontal edge of the travel platform; At least two mounting parts are disposed above the support part and the two mounting parts are spaced apart. The mounting parts and the support part together form a positioning groove. The mounting parts are detachably connected to the last working arm.

6. The maintenance vehicle of claim 1, wherein The last working arm includes a first part, in the first working state, the first part of the last working arm is suspended outside the traveling platform, and the drive assembly is detachably disposed on the first part.

7. The maintenance vehicle of claim 1, wherein, The drive assembly includes a first support base and a first drive device. The first drive device is disposed on the first support base and drives the cutter. The maintenance vehicle also includes a first pin and a second pin. The boom mechanism also includes a drive cylinder. The drive cylinder is hinged to the last working arm. In the first working state, the drive cylinder is rotatably connected to the first support base through the first pin, and the first support base is rotatably connected to the last working arm through the second pin.

8. The maintenance vehicle of claim 7, wherein, In the first operating state, the last operating arm is located at one end of the traveling platform along its traveling direction, and the first support base is in the horizontal direction relative to the rotation axis of the last operating arm.

9. The maintenance vehicle of claim 1, wherein, The maintenance vehicle also includes: The maintenance work platform and the drive assembly can be selectively and detachably connected to the last working arm; The maintenance vehicle also includes a second working state, in which the maintenance work platform is detachably connected to the last working arm, and the boom mechanism drives the maintenance work platform to move.

10. A rail transportation system characterized by, include: track; The maintenance vehicle according to any one of claims 1 to 9, wherein the maintenance vehicle travels on the track.

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