Amplitude changing device for railway bulk cargo loading and unloading vehicle and loading and unloading equipment

Abstract

The invention relates to a luffing device and loading and unloading equipment for a railway bulk cargo loading and unloading truck, and the luffing device comprises a first-stage luffing supporting arm, a second-stage luffing supporting arm, a third-stage luffing supporting arm and a fourth-stage luffing supporting arm, the second-stage variable-amplitude supporting arm is connected with the first-stage variable-amplitude supporting arm in a sliding mode in the length direction of the first-stage variable-amplitude supporting arm; the third-stage variable-amplitude supporting arm is in sliding connection with the second-stage variable-amplitude supporting arm in the length direction of the first-stage variable-amplitude supporting arm, one of the third-stage variable-amplitude supporting arm and the second-stage variable-amplitude supporting arm is provided with a rotary driving mechanism, and the other one of the third-stage variable-amplitude supporting arm and the second-stage variable-amplitude supporting arm is provided with a meshing piece; the meshing piece is arranged in the length direction of the first-stage variable-amplitude supporting arm and meshed with the rotary driving mechanism. The loading and unloading range of loading and unloading bulk goods can be widened, and the loading and unloading operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of loading and unloading equipment, and in particular to a luffing device and loading and unloading equipment for railway bulk cargo loading and unloading vehicles. Background Art

[0002] With the development of railway logistics, in order to facilitate the status of railway bulk cargo and improve the efficiency of bulk cargo loading and unloading, large unloading machinery or grab bucket machinery is used to load and unload bulk cargo. However, large unloading machinery or grab bucket machinery has the problems of high cost and low efficiency.

[0003] In the related art, bulk cargo is loaded and unloaded by a luffing device. However, the loading and unloading range of the luffing device is limited, and the efficiency of the loading and unloading operation is low. Summary of the Invention

[0004] Based on this, the embodiments of the present application provide a boom device and loading and unloading equipment for railway bulk cargo loading and unloading vehicles, which can increase the loading and unloading range of bulk cargo and improve the efficiency of loading and unloading operations.

[0005] In one aspect, an embodiment of the present application provides a luffing device for a railway bulk cargo loading and unloading vehicle, comprising:

[0006] The first-stage luffing support arm is used to connect with the jacking device;

[0007] A secondary luffing support arm is slidably connected to the primary luffing support arm along the length direction of the primary luffing support arm;

[0008] A three-stage luffing support arm is slidingly connected to the secondary luffing support arm along the length direction of the first luffing support arm. One of the three-stage luffing support arm and the secondary luffing support arm is provided with a rotation drive mechanism. The other of the three-stage luffing support arm and the secondary luffing support arm is provided with an engaging member. The engaging member is arranged along the length direction of the first luffing support arm, and the engaging member is engaged with the rotation drive mechanism.

[0009] In one embodiment, the engagement member includes a rack, which is provided on the three-stage amplitude variable support arm and is arranged along the length direction of the three-stage amplitude variable support arm; the rotation drive mechanism includes:

[0010] A first driving member, the first driving member is provided on the secondary luffing support arm;

[0011] The first driving gear is connected to the output shaft of the first driving member in a transmission manner and is meshed with the rack.

[0012] In one embodiment, the three-stage luffing support arm is provided with a rack mounting plate, and the rack is mounted on the rack mounting plate;

[0013] A first mounting seat is provided on the three-stage luffing support arm, and the first mounting seat is located at the end of the rack away from the two-stage luffing support arm; the first mounting seat is used to install the first telescopic member, the first telescopic member is connected to the unloading head, and the unloading head is rotatably connected to the end of the three-stage luffing support arm away from the two-stage luffing support arm.

[0014] In one embodiment, the rotation drive mechanism further comprises:

[0015] A second mounting seat, the second mounting seat is arranged at an end of the secondary luffing support arm away from the primary luffing support arm, and the first driving member is mounted on the second mounting seat;

[0016] The first reducer is arranged on the second mounting seat, the output shaft of the first driving member is transmission-connected with the first reducer, and the output shaft of the first reducer is transmission-connected with the first driving gear.

[0017] In one embodiment, the rotation drive mechanism further comprises:

[0018] A first reinforcement plate is provided on the secondary amplitude-changing support arm; a second mounting seat is provided on a side of the first reinforcement plate facing away from the secondary amplitude-changing support arm; a first reinforcement rib is provided between the second mounting seat and the first reinforcement plate; a through hole is provided on the first reinforcement plate, and at least a portion of the first drive gear is radially extended through the through hole and meshes with the rack;

[0019] The second reinforcing plate is arranged on a side of the first reinforcing plate facing the secondary amplitude variable support arm, and the second reinforcing plate is connected to the secondary amplitude variable support arm.

[0020] In one embodiment, a wiring conduit is provided on the third-level luffing support arm, and the wiring conduit extends along the length direction of the third-level luffing support arm to the first-level luffing support arm. The first-level luffing support arm is provided with a drag chain, and the drag chain is connected to the wiring conduit;

[0021] A retaining frame is provided on the secondary luffing support arm, and the wiring pipe is passed through the retaining frame and can slide in the retaining frame along the sliding direction of the primary luffing support arm, the secondary luffing support arm and the tertiary luffing support arm.

[0022] In one embodiment, the retainer comprises:

[0023] The retainer body is provided on the secondary luffing support arm, and the retainer body is located at one end of the secondary luffing support arm away from the primary luffing support arm;

[0024] A plurality of rollers are rotatably arranged on the retainer body and are evenly spaced along the circumference of the retainer body; the rollers are in rolling contact with the wiring pipe.

[0025] In one embodiment, the amplitude varying device further comprises:

[0026] The slewing support mechanism is connected to the first-stage luffing support arm, and the slewing support mechanism includes a slewing support mounting seat, a second driving member, and a second reducer; side plate reinforcement ribs are provided on both sides of the first-stage luffing support arm, and a slewing support mounting seat is provided on the side plate reinforcement ribs; a slewing support reinforcement rib is provided between the first-stage luffing support arm and the slewing support mounting seat, and the first-stage luffing support arm is provided on the slewing support mounting seat;

[0027] A slewing gear and a second driving gear are provided on the side of the slewing bearing mounting seat away from the first-stage luffing support arm, and the second driving gear is meshed with the slewing gear; the second driving gear is transmission-connected to the second reducer, and the second reducer is transmission-connected to the second driving member; the slewing gear is used to connect to the jacking device;

[0028] A slewing gasket is provided between the slewing gear and the slewing support mounting seat.

[0029] In one embodiment, a counterweight mounting frame is provided at one end of the first-stage luffing support arm away from the second-stage luffing support arm, and the counterweight mounting frame is used to install a counterweight block;

[0030] A first slider assembly and a first stop block are provided at one end of the primary luffing support arm facing the secondary luffing support arm. The first slider assembly is provided on the inner wall of the primary luffing support arm, and the first stop block is located on the side of the first slider assembly facing the secondary luffing support arm.

[0031] The secondary luffing support arm is provided through the first stop block and through the primary luffing support arm; a second slider assembly and a second reinforcing rib are provided at one end of the secondary luffing support arm facing the primary luffing support arm, the second slider assembly is located on the outer wall of the secondary luffing support arm and is in sliding contact with the inner wall of the primary luffing support arm, and the second reinforcing rib is provided on the inner wall of the secondary luffing support arm; a third slider assembly and a second stop block are provided at one end of the secondary luffing support arm away from the primary luffing support arm, the third slider assembly is located on the inner wall of the secondary luffing support arm, the third slider assembly is in sliding contact with the third luffing support arm, and the second stop block is located on the side of the third slider assembly away from the primary luffing support arm;

[0032] The third-stage luffing support arm is passed through the second blocking block and passed through the second-stage luffing support arm. The third-stage luffing support arm faces the fourth slider assembly and the third reinforcing rib at one end of the second-stage luffing support arm. The fourth slider assembly is provided on the outer wall of the third-stage luffing support arm, and the fourth slider assembly is in sliding contact with the inner wall of the second-stage luffing support arm. The third reinforcing rib is provided on the inner wall of the third-stage luffing support arm.

[0033] The three-stage amplitude variation support arm is provided with an engagement member protection cover, which is telescopically arranged on the side of the engagement member away from the three-stage amplitude variation support arm along the sliding direction of the three-stage amplitude variation support arm relative to the two-stage amplitude variation support arm.

[0034] On the other hand, an embodiment of the present application provides a loading and unloading device, comprising:

[0035] The luffing device for railway bulk cargo loading and unloading vehicles provided in the aforementioned embodiments of the present application, and

[0036] The jacking device is connected with the first-level luffing support arm of the luffing device.

[0037] In an embodiment of the present application, a variable-length device and loading and unloading equipment for railway bulk cargo loading and unloading vehicles are provided. By providing a secondary variable-length support arm slidably connected to the primary variable-length support arm along the length direction of the primary variable-length support arm, and providing a tertiary variable-length support arm sliding along the length direction on the secondary variable-length support arm, the lateral telescopic length of the variable-length device can be extended, the loading and unloading range of the variable-length device can be expanded, and the efficiency of loading and unloading operations can be improved. In addition, in an embodiment of the present application, a rotary drive mechanism is provided on one of the tertiary variable-length support arm and the secondary variable-length support arm, and an engaging member is provided on the other of the tertiary variable-length support arm and the secondary variable-length support arm. The engaging member is provided along the length direction of the primary variable-length support arm and engages with the rotary drive mechanism. In this way, the telescopic range and length of the tertiary variable-length support arm relative to the secondary variable-length support arm can be extended by the engaging member, thereby increasing the loading and unloading range of the variable-length device and improving the efficiency of loading and unloading operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of a boom mechanism for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0039] Figure 2 It is a schematic structural diagram of a three-stage luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0040] Figure 3 It is a schematic structural diagram of a secondary luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0041] Figure 4 This is a schematic structural diagram of a rotary drive mechanism in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0042] Figure 5 This is a schematic structural diagram of a retaining frame in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0043] Figure 6 This is a schematic structural diagram of a first-stage luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0044] Figure 7 It is a structural schematic diagram of the slewing support mechanism in the luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0045] Figure 8 This is a schematic structural diagram of a counterweight mounting frame in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0046] Description of reference numerals:

[0047] 10-luffing device;

[0048] 11-first-stage luffing support arm; 12-second-stage luffing support arm; 13-third-stage luffing support arm; 14-slewing support mechanism; 15-counterweight mounting frame;

[0049] 111 - drag chain; 112 - drag chain frame; 113 - third mounting seat; 114 - first slider assembly; 115 - first stopper; 116 - second telescopic member; 117 - first end cap; 121 - rotary drive mechanism; 122 - retaining frame; 123 - second slider assembly; 124 - second reinforcing rib; 125 - third slider assembly; 126 - second stopper; 127 - fourth mounting seat; 131 - engaging member; 132 - first mounting seat; 133 - wiring duct; 134 - fourth slider assembly; 135 - third reinforcing rib; 136 - engaging member protective cover; 141 - slewing bearing mounting seat; 142 - second driving member; 143 - second reducer; 144 - side plate reinforcement rib; 145 - slewing bearing reinforcement rib; 146 - slewing gear; 147 - second driving gear; 148 - slewing gasket;

[0050] 1211-first driving member; 1212-first driving gear; 1213-second mounting seat; 1214-first reducer; 1215-first reinforcing plate; 1215a-through hole; 1215b-first reinforcing rib; 1216-second reinforcing plate; 1221-holder body; 1222-roller; 1311-rack; 1312-rack mounting plate. DETAILED DESCRIPTION

[0051] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0052] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0054] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0055] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0057] Figure 1 It is a schematic diagram of the overall structure of a boom mechanism for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0058] For some examples, refer to Figure 1 As shown, in some examples of the embodiments of the present application, a luffing device 10 for an apartment railway bulk cargo loading and unloading vehicle is provided. The luffing device 10 may include a primary luffing support arm 11. The primary luffing support arm 11 may be a square tube or square steel structure.

[0059] For some examples, refer to Figure 1 As shown, the first-stage variable-length support arm 11 can be used to connect with the jacking device of the loading and unloading equipment.

[0060] For some examples, refer to Figure 1 As shown, the amplitude variation device 10 may include a secondary amplitude variation support arm 12. The secondary amplitude variation support arm 12 may be a square tube or a square steel structure. Figure 1 In the direction shown by the x-axis), the secondary variable amplitude support arm 12 can be slidably connected to the primary variable amplitude support arm 11.

[0061] In some examples, the secondary variable amplitude support arm 12 can be inserted into the primary variable amplitude support arm 11. The secondary variable amplitude support arm 12 can slide and retract in the primary variable amplitude support arm 11.

[0062] In some examples, in order to increase the range of the luffing device 10 for loading and unloading bulk cargo, refer to Figure 1 As shown, the luffing device 10 may include a three-stage luffing support arm 13. The three-stage luffing support arm 13 may be inserted into the second-stage luffing support arm 12. The three-stage luffing support arm 13 may be slidably connected to the second-stage luffing support arm 12 along the length of the first-stage luffing support arm 11. In other words, when loading and unloading bulk cargo, the second-stage luffing support arm 12 may slide relative to the first-stage luffing support arm 11, thereby driving the three-stage luffing support arm 13 to slide, facilitating loading and unloading of cargo by a discharge head mounted on the three-stage luffing support arm 13.

[0063] In some examples, in order to increase the sliding and retracting length range of the third-stage variable amplitude support arm 13 relative to the second-stage variable amplitude support arm 12, refer to Figure 1 As shown, one of the tertiary luffing support arm 13 and the secondary luffing support arm 12 is provided with a rotation drive mechanism 121. The other of the tertiary luffing support arm 13 and the secondary luffing support arm 12 is provided with an engagement member 131. The engagement member 131 can be arranged along the length direction of the primary luffing support arm 11 and can engage with the rotation drive mechanism 121.

[0064] In some examples, the rotation driving mechanism 121 may be provided on the secondary amplitude-variable support arm 12 , and the engagement member 131 may be provided on the tertiary amplitude-variable support arm 13 .

[0065] In some examples, the rotation drive mechanism 121 can be provided on the tertiary variable amplitude support arm 13, and the engagement member 131 can be provided on the secondary variable amplitude support arm 12. When the rotation drive mechanism 121 rotates, it can move along the length direction of the engagement member 131, thereby driving the tertiary variable amplitude support arm 13 to slide relative to the secondary variable amplitude support arm 12.

[0066] In some examples, the engagement member 131 may include a chain.

[0067] In an embodiment of the present application, a luffing device 10 for loading and unloading bulk cargo on railway vehicles is provided. A secondary luffing support arm 12 slidably connected to the primary luffing support arm 11 is provided along the length direction of the primary luffing support arm 11, and a third luffing support arm 13 sliding along the length direction is provided on the secondary luffing support arm 12. In this way, the lateral telescopic length of the luffing device 10 can be extended, the loading and unloading range of the luffing device 10 can be expanded, and the efficiency of loading and unloading operations can be improved. In addition, in the embodiment of the present application, a rotation drive mechanism 121 is provided on one of the tertiary amplitude variation support arm 13 and the secondary amplitude variation support arm 12, and a coupling member 131 is provided on the other of the tertiary amplitude variation support arm 13 and the secondary amplitude variation support arm 12. The coupling member 131 is provided along the length direction of the primary amplitude variation support arm 11, and the coupling member 131 is engaged with the rotation drive mechanism 121. In this way, the coupling member 131 can extend along the length direction of any one of the secondary amplitude variation support arm 12 and the tertiary amplitude variation support arm 13, and the coupling member 131 can extend the telescopic range and length of the tertiary amplitude variation support arm 13 relative to the secondary amplitude variation support arm 12, thereby improving the loading and unloading range of the amplitude variation device 10, thereby improving the efficiency of the loading and unloading operations.

[0068] In addition, the strength of either the secondary amplitude-changing support arm 12 or the tertiary amplitude-changing support arm 13 can be enhanced by the engaging member 131, thereby ensuring that the tertiary amplitude-changing support arm 13 has sufficient strength after being extended relative to the secondary amplitude-changing support arm 12, and ensuring the telescopic range and length of the tertiary amplitude-changing support arm 13 relative to the secondary amplitude-changing support arm 12, thereby enhancing the loading and unloading range of the amplitude-changing device 10 and improving the efficiency of the loading and unloading operations.

[0069] Figure 2 It is a schematic structural diagram of a three-stage luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0070] In some examples, the engagement member 131 may include a rack 1311. The rack 1311 may be provided on the three-stage amplitude variation support arm 13. The rack 1311 may be provided along the length direction of the three-stage amplitude variation support arm 13.

[0071] In some examples, the rack 1311 can be provided on one side wall of the three-stage amplitude-variable support arm 13. The three-stage amplitude-variable support arm 13 can be a square tube or square steel. The rack 1311 can be provided on the outer side wall of the three-stage amplitude-variable support arm 13.

[0072] In some examples, a rack mounting plate 1312 may be fixedly connected to the side wall of the three-stage amplitude adjustment support arm 13 , and the rack 1311 may be mounted on the rack mounting plate 1312 .

[0073] In some examples, the rack mounting plate 1312 can be welded to the three-stage amplitude adjustment support arm 13 .

[0074] In some examples, the rack mounting plate 1312 can be fixed to the three-stage amplitude adjustment support arm 13 by connecting components such as bolts, screws, or screws.

[0075] In some examples, the rack 1311 can be fixed to the rack mounting plate 1312 by connecting components such as bolts, screws, or threaded rods.

[0076] In some examples of the embodiments of the present application, a rack mounting plate 1312 is fixedly connected to the side wall of the third-stage luffing support arm 13. This allows the rack mounting plate 1312 to reinforce the third-stage luffing support arm 13, thereby increasing its strength and extending the range of its extension from the second-stage luffing support arm 12. Furthermore, mounting the rack 1311 on the rack mounting plate 1312 facilitates the installation and fixation of the rack 1311, thereby improving the efficiency of the installation and fixation of the rack 1311.

[0077] Figure 3 It is a schematic structural diagram of a secondary luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application. Figure 4 This is a schematic structural diagram of a rotary drive mechanism in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0078] For some examples, refer to Figure 3 and Figure 4 As shown, the rotation drive mechanism 121 may include a first drive member 1211. The first drive member 1211 may be provided on the secondary amplitude variable support arm 12. The first drive member 1211 may be fixedly connected to the secondary amplitude variable support arm 12.

[0079] In some examples, the first driving member 1211 may include a motor that can rotate forward and reverse. The first driving member 1211 may include any one of a servo motor, a stepping motor, or a synchronous motor.

[0080] In some examples, the rotation drive mechanism 121 may include a first drive gear 1212 . The first drive gear 1212 may be in driving connection with an output shaft of the first drive member 1211 . The first drive gear 1212 may be engaged with the rack 1311 .

[0081] In some examples of the embodiments of the present application, the engagement member 131 is configured as a rack 1311, the rack 1311 being arranged along the length of the three-stage variable-length support arm 13, and a first drive member 1211 and a first drive gear 1212 being provided on the second-stage variable-length support arm 12. The output shaft of the first drive member 1211 is in transmission connection with the first drive gear 1212, and the first drive gear 1212 is engaged with the rack 1311. Thus, the first drive gear 1212 rotates under the drive of the first drive member 1211, thereby driving the rack 1311 to move. In this manner, the movement speed of the rack 1311 is positively correlated with the rotation speed of the first drive gear 1212, making it easier to control the movement speed of the rack 1311 by controlling the rotation speed of the first drive gear 1212. This improves the telescopic efficiency of the three-stage variable-length support arm 13 and enhances the efficiency of loading and unloading cargo.

[0082] For some examples, refer to Figure 2 As shown, a first mounting seat 132 may be provided on the third-stage amplitude variation support arm 13. The first mounting seat 132 may be located at an end of the rack 1311 away from the second-stage amplitude variation support arm 12.

[0083] In some examples, the first mounting base 132 can be used to mount a first telescopic member (not shown). The first telescopic member can be connected to a discharge head (not shown). The discharge head can be rotatably connected to an end of the third-stage variable amplitude support arm 13 that faces away from the second-stage variable amplitude support arm 12.

[0084] In some examples, the first telescopic member may include a hydraulic cylinder, one end of which may be rotatably connected to the first mounting base 132 , and the other end of which may be rotatably connected to the discharge head.

[0085] In some examples, when the first telescopic member is shortened, the first telescopic member can pull the discharge head to rotate relative to the three-stage luffing support arm 13, thereby causing the discharge head to rotate in a direction parallel to the three-stage luffing support arm 13. When the first telescopic member is extended, the first telescopic member can push the discharge head to rotate relative to the three-stage luffing support arm 13, thereby causing the discharge head to rotate in a direction perpendicular to the three-stage luffing support arm 13.

[0086] In some examples, the first telescopic member may include an electric push rod or a pneumatic cylinder, one end of which may be rotatably connected to the first mounting base 132, and the other end of which may be rotatably connected to the discharge head.

[0087] In some examples of the embodiments of the present application, a first mounting seat 132 is provided on the three-stage variable amplitude support arm 13, and the first mounting seat 132 is provided at the end of the rack 1311 away from the two-stage variable amplitude support arm 12; in this way, it is convenient to install the first telescopic member on the first mounting seat 132, so as to facilitate the rotation control of the unloading head through the first telescopic member. The first mounting seat 132 is provided at the end of the rack 1311 away from the two-stage variable amplitude support arm 12, which can avoid interference between the first mounting seat 132 and the first telescopic member and the rack 1311, and facilitate the expansion of the telescopic range of the three-stage variable amplitude support arm 13, thereby improving the loading and unloading range of the variable amplitude device 10 and improving the loading and unloading efficiency.

[0088] For some examples, refer to Figure 3 and Figure 4 As shown, the rotary drive mechanism 121 may include a second mounting seat 1213. The second mounting seat 1213 may be provided at an end of the secondary luffing support arm 12 that faces away from the primary luffing support arm 11. In other words, the second mounting seat 1213 may be provided at an end of the secondary luffing support arm 12 that faces toward the tertiary luffing support arm 13. In this way, the rotary drive mechanism 121 may drive the tertiary luffing support arm 13 to extend and retract at the end of the secondary luffing support arm 12 that faces toward the tertiary luffing support arm 13, thereby increasing the telescopic range of the tertiary luffing support arm 13, improving the loading and unloading range of the luffing device 10, and improving loading and unloading efficiency.

[0089] In some examples, the first driving member 1211 can be mounted on the second mounting base 1213 .

[0090] For some examples, refer to Figure 4As shown, the rotation drive mechanism 121 may include a first reducer 1214. The first reducer 1214 may be disposed on the second mounting base 1213. The first reducer 1214 may be fixedly connected to the second mounting base 1213.

[0091] In some examples, the output shaft of the first driving member 1211 can be in driving connection with the first reducer 1214. The output shaft of the first reducer 1214 can be in driving connection with the first driving gear 1212. In other words, the output shaft of the first driving member 1211 can transmit power to the first reducer 1214, and then to the first driving gear 1212 via the first reducer 1214, so that the first driving gear 1212 drives the rack 1311 to rotate.

[0092] In some examples of the embodiments of the present application, a first reducer 1214 is arranged on the second mounting seat 1213, and the output shaft of the first driving member 1211 is transmission-connected to the first reducer 1214, and the output shaft of the first reducer 1214 is transmission-connected to the first driving gear 1212; in this way, the output power of the first driving member 1211 can be controlled by the first reducer 1214, which facilitates the control of the extension and retraction speed of the three-stage variable amplitude support arm 13, thereby improving the safety of the extension and retraction of the three-stage variable amplitude support arm 13.

[0093] For some examples, refer to Figure 4 As shown, the rotation drive mechanism 121 may include a first reinforcement plate 1215. The first reinforcement plate 1215 may be provided on the secondary amplitude variation support arm 12. The second mounting seat 1213 may be provided on a side of the first reinforcement plate 1215 away from the secondary amplitude variation support arm 12.

[0094] In some examples, the second mounting base 1213 can be welded to the first reinforcing plate 1215. The first reinforcing plate 1215 can be fixedly connected to the secondary amplitude variable support arm 12 by connecting components such as bolts, screws, or screws. The first reinforcing plate 1215 can be welded to the secondary amplitude variable support arm 12.

[0095] In some examples, the second mounting base 1213 may be perpendicular to the first reinforcing plate 1215 .

[0096] For some examples, refer to Figure 4As shown, a first reinforcing rib 1215b may be provided between the second mounting seat 1213 and the first reinforcing plate 1215. The first reinforcing rib 1215b may be welded between the second mounting seat 1213 and the first reinforcing plate 1215. Multiple first reinforcing ribs 1215b may be provided, with each of the multiple first reinforcing ribs 1215b connected between the second mounting seat 1213 and the first reinforcing plate 1215. By providing multiple first reinforcing ribs 1215b, the connection between the second mounting seat 1213 and the first reinforcing plate 1215 is strengthened, thereby improving the stability of the connection between the second mounting seat 1213 and the first reinforcing plate 1215 and enhancing the safety of the luffing device 10.

[0097] In some examples, a through hole 1215 a may be defined in the first reinforcing plate 1215 , and at least a portion of the first driving gear 1212 radially passes through the through hole 1215 a and meshes with the rack 1311 .

[0098] For some examples, refer to Figure 4 As shown, the rotation drive mechanism 121 may include a second reinforcement plate 1216. The second reinforcement plate 1216 may be provided on a side of the first reinforcement plate 1215 facing the secondary amplitude variation support arm 12. The second reinforcement plate 1216 may be connected to the secondary amplitude variation support arm 12.

[0099] In some examples, the second reinforcing plate 1216 can be connected to the side wall of the secondary variable amplitude support arm 12. The second reinforcing plate 1216 can be welded to the side wall of the secondary bat support arm.

[0100] In some examples, the second reinforcing plate 1216 may include multiple second reinforcing plates 1216, which are spaced apart on the side of the first reinforcing plate 1215 facing the secondary amplitude variable support arm 12. The second reinforcing plates 1216 and the first reinforcing plate 1215 may form a groove, and the secondary amplitude variable support arm 12 may be inserted into the groove.

[0101] In some examples of the embodiments of the present application, by providing a first reinforcement plate 1215 and a second reinforcement plate 1216 on the secondary luffing support arm 12, the strength of the secondary luffing support arm 12 can be increased, ensuring the stability and safety of the rotation drive mechanism 121 after being installed on the secondary luffing support arm 12. By providing the second mounting seat 1213 on the first reinforcement plate 1215 and providing a first reinforcement rib 1215b between the first reinforcement plate 1215 and the second reinforcement plate 1216, the stability of the first drive member 1211 and the first reducer 1214 installed on the second mounting seat 1213 is improved. This improves the stability and safety of the rotation drive member driving the tertiary luffing support arm 13.

[0102] Figure 5 This is a schematic structural diagram of a retaining frame in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0103] In some examples, in order to facilitate the control of the first telescopic member and the discharge head on the three-stage variable amplitude support arm 13, it is usually necessary to connect the first telescopic member and the discharge head through wiring. Figure 1 As shown, in order to facilitate wiring, a wiring conduit 133 may be provided on the third-stage luffing support arm 13. The wiring conduit 133 may extend along the length direction of the third-stage luffing support arm 13 to the first-stage luffing support arm 11.

[0104] In some examples, the wiring conduit 133 may include a round pipe.

[0105] In some examples, the wiring conduit 133 may include a square tube, which may include an aluminum alloy square tube or a stainless steel square tube.

[0106] In some examples, the first-stage variable amplitude support arm 11 may be provided with a drag chain 111 and a drag chain frame 112. The drag chain 111 may be arranged on the drag chain frame 112. The drag chain 111 may be connected to a wiring conduit 133. The wiring may be arranged on the drag chain 111 and passed through the wiring conduit 133. When the third-stage variable amplitude support arm 13 is extended or retracted relative to the first-stage variable amplitude support arm 11 and the second-stage variable amplitude support arm 12, the wiring conduit 133 may drive the drag chain 111 to move, thereby driving the wiring to move together, so as to facilitate the wiring to be connected to the first telescopic member on the third-stage variable amplitude support arm 13 and the rotation drive mechanism 121 on the second-stage variable amplitude support arm 12, and to control the first telescopic member and the rotation drive mechanism 121.

[0107] For some examples, refer to Figure 1 and Figure 5 As shown, a retaining frame 122 can be provided on the secondary variable amplitude support arm 12, and the wiring pipe 133 can be passed through the retaining frame 122 and can slide in the retaining frame 122 along the sliding direction of the primary variable amplitude support arm 11, the secondary variable amplitude support arm 12 and the tertiary variable amplitude support arm 13.

[0108] For some examples, refer to Figure 5 As shown, the retaining frame 122 can be a frame structure. The wiring conduit 133 can be passed through the retaining frame 122. The retaining frame 122 can be fixedly connected to the secondary luffing support arm 12. The retaining frame 122 can be located at one end of the secondary luffing support arm 12 away from the primary luffing support arm 11.

[0109] In some examples of the present application, a wiring conduit 133 is provided on the third-level luffing support arm 13. The wiring conduit 133 extends along the length of the third-level luffing support arm 13 to the first-level luffing support arm 11. A drag chain 111 is provided on the first-level luffing support arm 11 and connected to the wiring conduit 133. This facilitates wiring on the luffing device 10, improves the regularity of wiring on the luffing device 10, and thereby enhances the safety of use of the luffing device 10. A retaining frame 122 is provided on the second-level luffing support arm 12. The wiring conduit 133 is inserted through the retaining frame 122 and can slide within the retaining frame 122 along the sliding direction of the first, second, and third-level luffing support arms 11, 12, and 13. This improves the stability of the wiring conduit 133 when driven by the third-level luffing support arm 13, improves the safety of wiring on the luffing device 10, and thus enhances the safety of use of the luffing device 10.

[0110] For some examples, refer to Figure 5 As shown, the retainer 122 may include a retainer body 1221. The retainer body 1221 may be formed by bending a sheet metal. The retainer body 1221 may be disposed on the secondary luffing support arm 12. The retainer body 1221 may be welded to the secondary luffing support arm 12. The retainer 122 plate ladder may be located at the end of the secondary luffing support arm 12 facing away from the primary luffing support arm 11.

[0111] For some examples, refer to Figure 5 As shown, the retaining frame 122 may include a plurality of rollers 1222. The rollers 1222 may be rotatably mounted on the retaining frame body 1221. The plurality of rollers 1222 may be spaced apart along the circumference of the retaining frame body 1221. The rollers 1222 may be in rolling contact with the wiring conduit 133. This reduces friction between the wiring conduit 133 and the retaining frame 122, improving the smoothness of the sliding of the wiring conduit 133 within the retaining frame 122, and thereby enhancing the stability of the telescopic operation of the three-stage variable amplitude support arm 13.

[0112] In some examples, roller 1222 may include a nylon roller 1222 .

[0113] In some examples of the embodiments of the present application, a retaining frame body 1221 is provided at one end of the secondary variable amplitude support arm 12 away from the primary variable amplitude support arm 11, and a plurality of nylon rollers 1222 arranged at intervals along the circumferential direction are provided in the retaining frame body 1221. In this way, the nylon rollers 1222 can contact the pipeline routing, thereby converting the sliding friction between the pipeline routing and the retaining frame 122 into rolling friction between the pipeline routing and the nylon rollers 1222. This can reduce the friction between the pipeline routing and the retaining frame 122, improve the smoothness of the sliding of the pipeline routing, and improve the stability of the extension and retraction of the tertiary variable amplitude support arm 13.

[0114] Figure 6 This is a schematic structural diagram of a first-stage luffing support arm in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application. Figure 7 It is a structural schematic diagram of the slewing support mechanism in the luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0115] In some instances, reference Figure 6 and Figure 7 As shown, the luffing device 10 may include a slewing support mechanism 14. The slewing support mechanism 14 may be connected to the primary luffing support arm 11.

[0116] In some examples, the slewing support mechanism may include a slewing support mounting base 141, a second driving member 142, and a second reducer 143. Side plate reinforcement ribs 144 may be provided on both sides of the bat support arm. The slewing support mounting base 141 may be provided on the side plate reinforcement ribs 144. A slewing support reinforcement rib 145 may be provided between the primary variable amplitude support arm 11 and the slewing support mounting base 141. The primary variable amplitude support arm 11 is provided on the slewing support mounting base 141. The primary variable amplitude support arm 11 may be fixedly connected to the slewing support mounting base 141.

[0117] In some examples, a slewing gear 146 and a second drive gear 147 are provided on the side of the slewing bearing mounting base 141 facing away from the primary luffing support arm 11. The second drive gear 147 is meshed with the slewing gear 146. The second drive gear 147 is transmission-connected to the second reducer 143, and the second reducer 143 is transmission-connected to the second driving member 142. The slewing gear 146 is used to connect to the jacking device. A slewing gasket 148 is provided between the slewing gear 146 and the slewing bearing mounting base 141. By providing the slewing gasket 148 between the slewing gear 146 and the slewing bearing mounting base 141, the gap between the slewing gear 146 and the slewing bearing mounting base 141 can be increased, thereby providing installation space for the mounting bolts of the second reducer 143, thereby facilitating the installation and fixation of the second reducer 143.

[0118] In some examples of the embodiments of the present application, by providing side plate reinforcement ribs 144 and slewing bearing reinforcement ribs 145 on the first-stage luffing support arm 11, the strength of the first-stage luffing support arm 11 can be improved, thereby ensuring the safety of the luffing device 10. By meshing the second drive gear 147 with the slewing gear 146, the second drive member 142 can transmit power to the slewing gear 146 through the second reducer 143, thereby driving the first-stage luffing support arm 11, the second-stage luffing support arm 12, and the third-stage luffing support arm 13 to rotate relative to the jacking mechanism, thereby expanding the loading and unloading range of the luffing device 10 and improving the loading and unloading efficiency of the luffing device 10.

[0119] Figure 8This is a schematic structural diagram of a counterweight mounting frame in a luffing device for railway bulk cargo loading and unloading vehicles provided in some embodiments of the present application.

[0120] For some examples, refer to Figure 8 As shown, a counterweight mounting frame 15 is provided at one end of the primary luffing support arm 11 away from the secondary luffing support arm 12. The counterweight mounting frame 15 is used to mount a counterweight block. The counterweight block may include a lead block.

[0121] In some examples, the number of counterweight blocks on the counterweight mounting frame 15 is adjustable.

[0122] For some examples, refer to Figure 6 As shown, a first slider assembly 114 and a first blocking block are provided at one end of the first-stage variable amplitude support arm 11 facing the second-stage variable amplitude support arm 12. The first slider assembly 114 is provided on the inner wall of the first-stage variable amplitude support arm 11, and the first blocking block is located on the side of the first slider assembly 114 facing the second-stage variable amplitude support arm 12.

[0123] For some examples, refer to Figure 6 As shown, a first end cap 117 may be provided at the end of the primary luffing support arm 11 facing the secondary luffing support arm 12. The first end cap 117 may be welded to the end of the primary luffing support arm 11 facing the secondary luffing support arm 12. The first end cap 117 may be located on the outer sidewall of the primary luffing support arm 11. The provision of the first end cap 117 can reinforce the primary luffing support arm 11 and improve its strength.

[0124] In some examples, the first slider assembly 114 may include multiple sliders. A slider may be provided on each of the four sidewalls of the primary luffing support arm 11. The sliders may be nylon sliders. By providing the first slider assembly 114, the first slider assembly 114 can abut against the outer wall of the secondary luffing support arm 12, facilitating the sliding of the secondary luffing support arm 12 relative to the primary luffing support arm 11 and reducing frictional resistance to the sliding of the secondary luffing support arm 12.

[0125] In some examples, the first blocking block can be connected to the first end cover 117. The aperture of the first blocking block can be smaller than the distance between the two opposite sliders in the first slider assembly 114. The first blocking block can block and limit one end of the secondary amplitude variation support arm 12 inserted into the primary amplitude variation support arm 11, thereby preventing the first slider assembly 114 and the secondary amplitude variation support arm 12 from sliding out, thereby improving the safety of the use of the amplitude variation device 10.

[0126] For some examples, refer to Figure 1 and Figure 6 As shown, a third mounting seat 113 may be provided on the primary amplitude variable support arm 11. The third mounting seat 113 may be used to mount a second telescopic member 116.

[0127] In some examples, the type of the second telescopic member 116 can be the same, similar or similar to that of the first telescopic member. For details, please refer to the detailed description of the first telescopic member in the previous embodiment of the present application, which will not be repeated in this embodiment of the present application. One end of the second telescopic member 116 can be connected to the third mounting base 113.

[0128] In some examples, the secondary amplitude variation support arm 12 is passed through the first blocking block and is passed through the primary amplitude variation support arm 11; the secondary amplitude variation support arm 12 is provided with a second slider assembly 123 and a second reinforcing rib 124 at one end facing the primary amplitude variation support arm 11, the second slider assembly 123 is located on the outer wall of the secondary amplitude variation support arm 12 and is in sliding contact with the inner wall of the primary amplitude variation support arm 11, and the second reinforcing rib 124 is provided on the inner wall of the secondary amplitude variation support arm 12; the secondary amplitude variation support arm 12 is provided with a third slider assembly 125 and a second blocking block 126 at one end away from the primary amplitude variation support arm 11, the third slider assembly 125 is located on the inner wall of the secondary amplitude variation support arm 12, the third slider assembly 125 is in sliding contact with the tertiary amplitude variation support arm 13, and the second blocking block 126 is located on the side of the third slider assembly 125 away from the primary amplitude variation support arm 11.

[0129] In some examples, the configuration of the second slider assembly 123 and the third slider assembly 125 may be the same, similar or similar to that of the first slider assembly 114 in the aforementioned embodiment of the present application. For details, please refer to the detailed description of the aforementioned embodiment of the present application, which will not be repeated in the embodiments of the present application.

[0130] In some examples, the second reinforcing rib 124 may be welded to the secondary luffing support arm 12. The second reinforcing rib 124 may close an end of the secondary luffing support arm 12 that faces the primary luffing support arm 11.

[0131] In some examples, the setting method of the second blocking block 126 can be the same, similar or similar to the setting method of the first blocking block in the aforementioned embodiment of the present application. For details, please refer to the detailed description of the aforementioned embodiment of the present application, and the embodiments of the present application will not go into details about this.

[0132] For some examples, refer to Figure 1 and Figure 3 As shown, a fourth mounting seat 127 may be provided on the secondary variable amplitude support arm 12. The fourth mounting seat 127 may be provided at an end of the secondary variable amplitude support arm 12 that faces away from the primary variable amplitude support arm 11. The fourth mounting seat 127 may be used to mount the second telescopic member 116. The other end of the second telescopic member 116 may be connected to the fourth mounting seat 127. In this way, when the second telescopic member 116 is extended or retracted, the distance between the third mounting seat 113 and the fourth mounting seat 127 may be changed, thereby driving the secondary variable amplitude support arm 12 to slide relative to the primary variable amplitude support arm 11.

[0133] For some examples, refer to Figure 2 As shown, the third-stage amplitude variation support arm 13 is passed through the second blocking block 126 and is passed through the second-stage amplitude variation support arm 12, and the third slider assembly 134 and the third reinforcement rib 135 are arranged on one end of the third-stage amplitude variation support arm 13 toward the second-stage amplitude variation support arm 12; the fourth slider assembly 134 is arranged on the outer wall of the third-stage amplitude variation support arm 13, and the fourth slider assembly 134 is in sliding contact with the inner wall of the second-stage amplitude variation support arm 12, and the third reinforcement rib 135 is arranged on the inner wall of the third-stage amplitude variation support arm 13.

[0134] In some examples, the configuration of the fourth slider assembly 134 may be the same, similar, or similar to that of the first slider assembly 114 in the aforementioned embodiment of the present application. For details, please refer to the detailed description of the aforementioned embodiment of the present application, and the embodiments of the present application will not be repeated here.

[0135] In some examples, the configuration of the third reinforcing rib 135 may be the same, similar or similar to the configuration of the second reinforcing rib 124 in the aforementioned embodiment of the present application. For details, please refer to the detailed description of the aforementioned embodiment of the present application, and the embodiments of the present application will not go into details therein.

[0136] For some examples, refer to Figure 1 As shown, the three-stage amplitude variation support arm 13 can be provided with an engagement member protection cover 136, which can be telescopically covered on the side of the engagement member 131 away from the three-stage amplitude variation support arm 13 along the sliding direction of the three-stage amplitude variation support arm 13 relative to the secondary amplitude variation support arm 12.

[0137] In some examples, the engagement member protection cover 136 is a retractable protection cover, and the retractable direction of the engagement member protection cover 136 can be consistent with the retractable direction of the third-stage variable amplitude support arm 13 relative to the second-stage variable amplitude support arm 12 .

[0138] In some examples of the embodiments of the present application, a gear protection cover 136 is provided, and the gear protection cover 136 is provided on the side of the gear 131 facing away from the third-stage amplitude variation support arm 13. In this way, the gear protection cover 136 can protect the gear 131, thereby improving the service life of the gear 131 and improving the safety of the amplitude variation device 10.

[0139] On the other hand, an embodiment of the present application provides a loading and unloading device, comprising:

[0140] The luffing device 10 for railway bulk cargo loading and unloading vehicles provided in the above embodiments of the present application, and

[0141] The jacking device is connected to the first-level luffing support arm 11 of the luffing device 10.

[0142] It can be understood that the loading and unloading equipment provided in the embodiment of the present application has the same or corresponding technical features as the amplitude-changing device provided in the aforementioned embodiment of the present application, and therefore has the same or similar technical effects. For details, please refer to the detailed description of the aforementioned embodiment of the present application, and the embodiment of the present application will not go into details about it.

[0143] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0144] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A luffing device for railway bulk cargo loading and unloading vehicles, characterized in that: include: A first-stage variable-luffing support arm (11), used for connecting to the jacking device; A secondary amplitude-changing support arm (12), wherein the secondary amplitude-changing support arm (12) is slidably connected to the primary amplitude-changing support arm (11) along the length direction of the primary amplitude-changing support arm (11); A three-stage amplitude-changing support arm (13) is slidably connected to the two-stage amplitude-changing support arm (12) along the length direction of the one-stage amplitude-changing support arm (11); one of the three-stage amplitude-changing support arm (13) and the two-stage amplitude-changing support arm (12) is provided with a rotation drive mechanism (121); the other of the three-stage amplitude-changing support arm (13) and the two-stage amplitude-changing support arm (12) is provided with an engaging member (131); the engaging member (131) is arranged along the length direction of the one-stage amplitude-changing support arm (11); and the engaging member (131) is engaged with the rotation drive mechanism (121).

2. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 1, characterized in that: The engagement member (131) comprises a rack (1311), the rack (1311) being provided on the three-stage amplitude-changing support arm (13), and the rack (1311) being provided along the length direction of the three-stage amplitude-changing support arm (13); the rotation drive mechanism (121) comprises: a first driving member (1211), the first driving member (1211) being provided on the secondary amplitude-changing support arm (12); A first driving gear (1212) is connected to the output shaft of the first driving member (1211) in a transmission manner, and the first driving gear (1212) is meshed with the rack (1311).

3. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 2, characterized in that: The three-stage amplitude-changing support arm (13) is provided with a rack mounting plate (1312), and the rack (1311) is mounted on the rack mounting plate (1312); A first mounting seat (132) is provided on the three-stage amplitude-variable support arm (13), and the first mounting seat (132) is located at an end of the rack (1311) away from the two-stage amplitude-variable support arm (12); the first mounting seat (132) is used to mount a first telescopic member, and the first telescopic member is connected to a discharge head, and the discharge head is rotatably connected to an end of the three-stage amplitude-variable support arm (13) away from the two-stage amplitude-variable support arm (12).

4. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 2, characterized in that: The rotary drive mechanism (121) further includes: a second mounting seat (1213), the second mounting seat (1213) being provided at an end of the secondary amplitude-changing support arm (12) facing away from the primary amplitude-changing support arm (11), and the first driving member (1211) being mounted on the second mounting seat (1213); A first reducer (1214), wherein the first reducer (1214) is disposed on the second mounting seat (1213), the output shaft of the first driving member (1211) is in transmission connection with the first reducer (1214), and the output shaft of the first reducer (1214) is in transmission connection with the first driving gear (1212).

5. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 4, characterized in that: The rotary drive mechanism (121) further includes: a first reinforcing plate (1215), the first reinforcing plate (1215) being provided on the secondary amplitude-changing support arm (12); the second mounting seat (1213) being provided on a side of the first reinforcing plate (1215) facing away from the secondary amplitude-changing support arm (12); a first reinforcing rib (1215b) being provided between the second mounting seat (1213) and the first reinforcing plate (1215); a through hole (1215a) being provided on the first reinforcing plate (1215), the first driving gear (1212) being at least partially radially passed through the through hole (1215a) and meshing with the rack (1311); A second reinforcing plate (1216), the second reinforcing plate (1216) is provided on a side of the first reinforcing plate (1215) facing the secondary amplitude-changing support arm (12), and the second reinforcing plate (1216) is connected to the secondary amplitude-changing support arm (12).

6. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 1, characterized in that: The third-stage amplitude-changing support arm (13) is provided with a wiring conduit (133), and the wiring conduit (133) extends along the length direction of the third-stage amplitude-changing support arm (13) to the first-stage amplitude-changing support arm (11), and the first-stage amplitude-changing support arm (11) is provided with a drag chain (111), and the drag chain (111) is connected to the wiring conduit (133); A retaining frame (122) is provided on the secondary amplitude-changing support arm (12); the wiring pipe (133) is passed through the retaining frame (122) and can slide in the retaining frame (122) along the sliding direction of the primary amplitude-changing support arm (11), the secondary amplitude-changing support arm (12), and the tertiary amplitude-changing support arm (13).

7. The luffing device for railway bulk cargo loading and unloading vehicles according to claim 6, characterized in that: The retaining frame (122) includes: a retainer body (1221), the retainer body (1221) being provided on the secondary amplitude variation support arm (12), the retainer body (1221) being located at an end of the secondary amplitude variation support arm (12) facing away from the primary amplitude variation support arm (11); A plurality of rollers (1222) are rotatably disposed on the retaining frame body (1221), and the plurality of rollers (1222) are evenly spaced along the circumference of the retaining frame body (1221); the rollers (1222) are in rolling contact with the wiring conduit (133).

8. The luffing device for railway bulk cargo loading and unloading vehicles according to any one of claims 1 to 7, characterized in that: The amplitude varying device further comprises: A slewing support mechanism (14), the slewing support mechanism (14) is connected to the first-stage variable amplitude support arm (11), the slewing support mechanism (14) comprises a slewing support mounting seat (141), a second driving member (142) and a second reducer (143); side plate reinforcement ribs (144) are provided on both sides of the first-stage variable amplitude support arm (11), the slewing support mounting seat (141) is provided on the side plate reinforcement ribs (144), a slewing support reinforcement rib (145) is provided between the first-stage variable amplitude support arm (11) and the slewing support mounting seat (141), and the first-stage variable amplitude support arm (11) is provided on the slewing support mounting seat (141); A slewing gear (146) and a second driving gear (147) are provided on the side of the slewing bearing mounting seat (141) facing away from the first-stage variable amplitude support arm (11), and the second driving gear (147) is meshed with the slewing gear (146); the second driving gear (147) is transmission-connected to the second reducer (143), and the second reducer (143) is transmission-connected to the second driving member (142); the slewing gear (146) is used to connect to the jacking device; A rotary gasket (148) is provided between the rotary gear (146) and the rotary support mounting seat (141).

9. The luffing device for railway bulk cargo loading and unloading vehicles according to any one of claims 1 to 7, characterized in that: A counterweight mounting frame (15) is provided at one end of the first-stage amplitude variation support arm (11) away from the second-stage amplitude variation support arm (12), and the counterweight mounting frame (15) is used for mounting a counterweight block; A first slider assembly (114) and a first blocking block are provided at one end of the primary amplitude variable support arm (11) facing the secondary amplitude variable support arm (12), wherein the first slider assembly (114) is provided on the inner wall of the primary amplitude variable support arm (11), and the first blocking block is located on a side of the first slider assembly (114) facing the secondary amplitude variable support arm (12); The secondary amplitude-changing support arm (12) is provided in the first blocking block and in the primary amplitude-changing support arm (11); a second slider assembly (123) and a second reinforcing rib (124) are provided at one end of the secondary amplitude-changing support arm (12) facing the primary amplitude-changing support arm (11); the second slider assembly (123) is located on the outer wall of the secondary amplitude-changing support arm (12) and is in sliding contact with the inner wall of the primary amplitude-changing support arm (11); the second reinforcing rib (124) is provided on the secondary amplitude-changing support arm (12). The inner wall of the support arm (12); a third slider assembly (125) and a second blocking block (126) are provided at one end of the secondary amplitude-changing support arm (12) away from the primary amplitude-changing support arm (11); the third slider assembly (125) is located on the inner wall of the secondary amplitude-changing support arm (12); the third slider assembly (125) is in sliding contact with the tertiary amplitude-changing support arm (13); and the second blocking block (126) is located on a side of the third slider assembly (125) away from the primary amplitude-changing support arm (11); The three-stage amplitude-changing support arm (13) is passed through the second blocking block (126) and passed through the second-stage amplitude-changing support arm (12); the third-stage amplitude-changing support arm (13) is provided with a fourth slider assembly (134) and a third reinforcing rib (135) at one end thereof facing the second-stage amplitude-changing support arm (12); the fourth slider assembly (134) is provided on the outer wall of the three-stage amplitude-changing support arm (13); the fourth slider assembly (134) is in sliding contact with the inner wall of the second-stage amplitude-changing support arm (12); and the third reinforcing rib (135) is provided on the inner wall of the three-stage amplitude-changing support arm (13); A meshing member protective cover (136) is provided on the three-stage amplitude variation support arm (13), and the meshing member protective cover (136) is telescopically covered on a side of the meshing member (131) away from the three-stage amplitude variation support arm (13) along a sliding direction of the three-stage amplitude variation support arm (13) relative to the two-stage amplitude variation support arm (12).

10. A loading and unloading equipment, characterized in that: include: The luffing device (10) for a railway bulk cargo loading and unloading vehicle according to any one of claims 1 to 9, and A lifting device is connected to the first-stage amplitude variation support arm (11) of the amplitude variation device (10).

Images