Handrail assembly and locomotive side suspension module for locomotive

Abstract

The present invention relates to the field of locomotives, and discloses a handrail assembly for locomotives and a locomotive side suspension module, wherein the handrail assembly comprises: a plurality of handrail units arranged in the longitudinal direction; a plurality of connecting units, each connecting unit being detachably connected between two adjacent handrail units; wherein the handrail unit is a welded frame structure and has a plurality of vertical rods, and a plurality of mounting holes arranged in a vertical interval are provided in the lower region of the vertical rods, and the mounting holes are used to cooperate with fasteners to mount the vertical rods on an external supporting structure. The present invention can improve the reliability and stability of the handrail assembly, reduce the workload of disassembly and assembly, and improve the efficiency of disassembly and assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotives, and in particular to a handrail rod assembly for a locomotive and a locomotive side suspension module. Background Art

[0002] In some locomotives (such as shunting locomotives), two side areas in the lateral direction of the locomotive have various components such as corridor floors, handrails, side trims, pipes and lines, etc., which constitute the outer corridor structure of the locomotive.

[0003] Figure 1 A schematic diagram of a prior art locomotive handrail assembly is shown, Figure 1 As shown, in the prior art, the intersections or connection points between each transverse rod 1 and the vertical rod 2 of the handrail assembly are transitionally connected by a tee 3 or a cross 4, and fixed by a hexagon socket bolt 5. The handrail mounting seat 6 pre-welded on the handrail is closely attached to the handrail mounting base pre-welded on the locomotive underframe 7 and is screwed together by multiple horizontally arranged fasteners to achieve fixed installation.

[0004] The inventor of the present application has recognized that the prior art locomotive handrail assembly has problems of insufficient reliability and low disassembly and assembly efficiency. Specifically, the handrail assembly is often unstable after installation due to too many connection points due to the excessive disassembly of the handrail, and the crossbar rotates about the axis center; the disassembly and assembly efficiency is low due to the excessive dispersion of the handrail; the handrail is installed on the chassis through multiple fasteners arranged horizontally, resulting in insufficient vertical stability of the handrail.

[0005] Based on this, the existing technology still needs to be improved. Summary of the invention

[0006] The main purpose of the present invention is to provide a handrail assembly for a locomotive and a locomotive side suspension module to solve the problems of insufficient reliability and low disassembly and assembly efficiency of locomotive handrail assemblies in the prior art.

[0007] According to one aspect of the present invention, a handrail assembly for a locomotive is provided, comprising:

[0008] A plurality of handrail bar units arranged in a longitudinal direction;

[0009] A plurality of connection units, each connection unit being detachably connected between two adjacent handrail rod units;

[0010] The handrail rod unit is a welded frame structure having a plurality of vertical rods, and a plurality of mounting holes arranged at intervals along the vertical direction are provided in the lower area of ​​the vertical rods, and the mounting holes are used to cooperate with fasteners to mount the vertical rods on the external supporting structure.

[0011] According to one embodiment of the present invention, the lower region is used to be inserted into a receiving groove of the external supporting structure, and an outwardly protruding blocking portion is formed on an upper side of the lower region, and the blocking portion is used to fit with an upper end surface of the receiving groove.

[0012] According to one embodiment of the present invention, the vertical rod includes a rod body with a circular cross-section, and the lower area has a vertical plane formed by cutting off a part of the rod body; the vertical rod also includes a mounting plate welded to the vertical plane, and a plurality of mounting holes are formed on the mounting plate.

[0013] According to one embodiment of the present invention, the handrail rod unit includes a frame and a plurality of vertical rods welded to the frame and arranged at predetermined intervals in the longitudinal direction, X represents the predetermined interval, X1 represents the longitudinal distance between the first side edge of the frame and the vertical rod closest thereto, X2 represents the longitudinal distance between the second side edge of the frame and the vertical rod closest thereto, and X3 represents the longitudinal distance between two adjacent frames, then the formula is satisfied: X=X1+X2+X3.

[0014] According to an embodiment of the present invention, the frame includes a bent surrounding rod and a longitudinally extending straight rod, the two ends of the surrounding rod are respectively welded to two vertical rods located on both sides of the plurality of vertical rods, and the straight rod is welded between two adjacent vertical rods.

[0015] According to one embodiment of the present invention, connecting pieces are provided on both longitudinal sides of the handrail bar unit, the connecting pieces form matching grooves, and both ends of the connecting unit are respectively fixed to the matching grooves of the two handrail bar units through fixing pieces.

[0016] According to an embodiment of the present invention, the fixing member includes a screw and a nut, and two opposite groove walls of the matching groove are respectively provided with a through hole and a regular hexagonal hole matching the nut.

[0017] According to an embodiment of the present invention, the position of the end portion of the connecting unit in the matching groove is adjustable in the longitudinal direction.

[0018] According to another aspect of the present invention, a locomotive side suspension module is provided, comprising:

[0019] A support unit, the support unit comprises a plurality of brackets arranged at intervals in the longitudinal direction and a plurality of connecting beams arranged at intervals in the longitudinal direction, each connecting beam being connected between adjacent brackets; a receiving groove is provided on the lateral outer side of the bracket;

[0020] In the handrail bar assembly as described above, the lower areas of the plurality of vertical bars are respectively fixed in the receiving grooves of the plurality of brackets by fasteners.

[0021] According to one embodiment of the present invention, a side opening is provided on the lateral outer side of the receiving groove, and the bracket also includes a plurality of handrail mounting plates arranged in the side opening along the vertical interval; the side suspension module also includes a plurality of adjustment gaskets, each adjustment gasket is arranged between each handrail mounting plate and the vertical rod; the interval between adjacent handrail mounting plates allows the adjustment gasket to be installed.

[0022] In the technical solution of the present invention, the handrail bar assembly includes multiple handrail bar units and multiple connecting units. The handrail bar unit is a welded frame structure. The welding points of the frame structure are firmly connected, which can avoid the problem of easy instability of the handrail bar assembly caused by the use of fasteners; the multiple mounting holes on the vertical rod of the handrail bar unit are arranged vertically, which can improve the vertical stability of the handrail bar assembly after installation; the handrail bar unit adopts a welded frame, and when disassembling and assembling the handrail bar, the disassembly and assembly is mainly carried out between the handrail bar unit and the connecting unit, which can reduce the disassembly and assembly workload and improve the disassembly and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram showing a prior art locomotive handrail bar assembly;

[0025] Figure 2 A schematic diagram showing a handrail assembly for a locomotive according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram showing a handrail bar unit according to an embodiment of the present invention;

[0027] Figure 4 Another schematic diagram showing a handrail bar unit according to an embodiment of the present invention;

[0028] Figure 5 Show Figure 4 An enlarged schematic diagram of point Ⅰ;

[0029] Figure 6 Show Figure 3 The enlarged schematic diagram of the II;

[0030] Figure 7 Show Figure 3 The top view corresponding to point II;

[0031] Figure 8 A schematic diagram showing a vertical rod according to an embodiment of the present invention;

[0032] Fig. 9 Show Figure 8 AA section view;

[0033] Fig.10 A schematic diagram showing the connection between the connecting unit and the handrail unit according to an embodiment of the present invention;

[0034] Fig.11 Another schematic diagram showing the connection between the connecting unit and the handrail bar unit according to an embodiment of the present invention;

[0035] Fig.12 Another schematic diagram showing the connection between the connecting unit and the handrail unit according to an embodiment of the present invention;

[0036] Fig.13 A schematic diagram showing a connecting member according to an embodiment of the present invention;

[0037] Fig.14 Another schematic diagram showing a connecting member according to an embodiment of the present invention;

[0038] Fig.15 Another schematic diagram showing a connecting member according to an embodiment of the present invention;

[0039] Fig.16 A schematic diagram showing a connection unit according to an embodiment of the present invention;

[0040] Fig.17 Another schematic diagram showing a connection unit according to an embodiment of the present invention;

[0041] Fig.18 A schematic diagram showing a support unit of a side suspension module according to an embodiment of the present invention is shown.

[0042] Description of reference numerals:

[0043] 1. Horizontal rod; 2. Vertical rod; 3. Tee; 4. Cross; 5. Hexagon socket bolt; 6. Handrail mounting base; 7. Locomotive underframe.

[0044] 100, handrail rod assembly; 110, handrail rod unit; 111, rod body; 112, vertical rod; 113, mounting plate; 114, surrounding rod; 115, blocking part; 116, straight rod; 118, connecting piece; 1182, matching groove; 1184, through hole; 1186, regular hexagonal hole; 120, connecting unit; 122, insertion part; 130, fixing piece; 132, screw; 134, nut; 200, supporting unit; 210, bracket; 211, receiving groove; 212, handrail rod mounting plate; 213, mounting hole; 214, interval; 215, adjustment gasket; 216, fastener; 220, connecting beam. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0046] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0047] As mentioned in the above background technology, the inventors of the present application recognize that there are some shortcomings in the locomotive handrail assembly of the prior art. Specifically, the handrail that is split too thin often causes the handrail assembly to become unstable after installation due to too many connection points, and the cross bar will also rotate about the center of the axis; the handrail that adopts three-way and four-way cross-connection has the risk of loosening the fasteners at the connection, and there are no anti-loosening measures; the disassembly and assembly efficiency is low due to being too scattered; the handrail is installed on the chassis through multiple fasteners arranged horizontally, resulting in insufficient vertical stability of the handrail; the three-way and four-way used for handrail assembly are castings, which have a complex structure and require molds. The manufacturing cycle is long and the cost is high. In order to solve the above problems existing in the prior art, the present application proposes one or more embodiments to be described below.

[0048] refer to Figures 2 to 4 The present application proposes a handrail bar assembly 100 for a locomotive, comprising: a plurality of handrail bar units 110 arranged in a longitudinal direction; a plurality of connecting units 120, each connecting unit 120 being detachably connected between two adjacent handrail bar units 110; wherein the handrail bar unit 110 is a welded frame structure and has a plurality of vertical rods 112, and a plurality of mounting holes arranged in a vertical interval are provided in the lower region of the vertical rods 112, and the mounting holes are used to cooperate with fasteners 216 to mount the vertical rods 112 on an external support structure. The external support structure may be a support unit of a locomotive side suspension module to be described below.

[0049] In an embodiment of the present invention, the handrail bar assembly 100 includes a plurality of handrail bar units 110 and a plurality of connecting units 120. The handrail bar unit 110 is a welded frame structure. The welding points of the frame structure are firmly connected and relative displacement does not occur, which can avoid the problem of the handrail bar assembly being easily unstable due to the use of fasteners. The plurality of mounting holes on the vertical rod 112 of the handrail bar unit 110 are arranged vertically, which can improve the vertical stability of the handrail bar assembly after installation. The handrail bar unit 110 adopts a welded frame. When disassembling the handrail bar, the handrail bar unit 110 and the connecting unit 120 are mainly disassembled, which can reduce the disassembly workload and improve the disassembly efficiency. The handrail bar assembly 100 uses the handrail bar unit 110 and the connecting unit 120 as the basic assembly unit, and has a high reuse rate. The appropriate number of handrail bar units 110 and the connecting unit 120 can be selected according to the needs to be assembled into a modular handrail bar assembly 100.

[0050] The handrail bar assembly 100 on both sides of the locomotive can be identical. Figure 2 , Figure 3 , Figure 4 , Fig.10 The handrail bar assembly 100 of the present invention has the following characteristics: it can adapt to the change of the length of the locomotive as the size of the handrail bar unit 110 increases or decreases; it can adapt to the change of the length of the locomotive as the number of handrail bar units 110 increases or decreases; it can adapt to the change of the length of the locomotive as the size of the connecting unit 120 increases or decreases; the handrail bar unit 110 and the connecting unit 120 have obvious commonalities and can be used as modular parts and replicated in batches. The shape and structure of the handrail bar units 110 located on the far sides can be different from the handrail bar units 110 located in the middle to adapt to the situation on both sides.

[0051] In some embodiments, to achieve a secure connection between the handrail bar assembly 100 and the external supporting structure, the handrail bar unit 110 is a welded structure within a length of 3000 mm, multiple handrail bar units 110 are as identical as possible, and the distance between two adjacent vertical bars 112 of the handrail bar unit 110 is 1000 mm.

[0052] refer to Figures 3 to 9In some embodiments, the lower area of ​​the vertical rod 112 is used to insert into the receiving groove 211 (e.g., a C-shaped groove) of the external supporting structure, and the upper side of the lower area forms a blocking portion 115 protruding outward, and the blocking portion 115 is used to fit with the upper end surface of the receiving groove 211. The blocking portion 115 can be a baffle, and the vertical rod 112 is passed through the baffle. By providing the blocking portion 115, the minimum installation height of the handrail bar assembly 100 can be limited, and the blocking portion 115 is pressed on the upper end surface of the receiving groove 211, which can further improve the installation stability of the handrail bar assembly 100 on the external supporting structure. The length and width dimensions of the blocking portion 115 can be the same as the plane dimensions on the installation interface reserved for the handrail bar assembly 100 on the external supporting structure.

[0053] refer to Figure 8 and Fig. 9 In some embodiments, the vertical rod 112 includes a rod body 111 (such as a round tube) with a circular cross-section, and the lower area of ​​the vertical rod 112 has a vertical plane formed by cutting off a portion of the rod body 111; the vertical rod 112 also includes a mounting plate 113 welded to the vertical plane, and a plurality of mounting holes are formed on the mounting plate 113. In this way, the curved surface of the rod body 111 can be converted into a plane, which is conducive to achieving a planar connection between the vertical rod 112 and the external bearing structure, and ensuring the effectiveness and stability of the connection. The mounting plate 113 can be further welded to the blocking portion 115 to improve the stability of the installation. The blocking portion 115 can assist the vertical rod 112 in transitioning from a curved surface to a plane, creating conditions for achieving a planar installation of the vertical rod 112.

[0054] In a specific embodiment, half of the portion of the round tube after passing through the baffle is removed, and the remaining half of the tube is welded to the mounting plate and then welded to the baffle. Two threaded holes for mounting the handrail assembly are left on the mounting plate, and the two threaded holes are arranged vertically for screwing the handrail assembly 100 to the external support structure. The connection points between the handrail assembly 100 and the external support structure are arranged vertically, which can greatly improve the stability of the handrail assembly 100 after installation.

[0055] The blocking portion 115 and the mounting plate 113 are perpendicular to each other, the upper plane of the receiving groove 211 of the external support structure is perpendicular to the mounting plane of the handrail mounting plate 212 of the external support structure, and in the above two sets of vertical welding structures, the lower plane of the blocking portion 115 is pressed on the upper plane of the receiving groove 211, and the mounting plate 113 is pressed on the mounting plane inside the handrail mounting plate 212, and then fixed by two sets of vertically arranged fasteners 216. Through this technical solution, not only the horizontal planes of the two mounting structures are fitted, but also the two vertical mounting planes are fitted, and then fixed by fasteners, the original single-plane close-fitting structure of the handrail can be upgraded to two sets of mutually perpendicular planes close-fitting, which can greatly improve the stability of the handrail assembly 100 after installation.

[0056] refer to Figure 3 , Figure 4 and Fig.10 In some embodiments, the handrail bar unit 110 includes a frame and a plurality of vertical rods 112 welded to the frame and arranged at predetermined intervals in the longitudinal direction. X represents the predetermined interval, X1 represents the longitudinal distance between the first side edge of the frame and the vertical rod 112 closest to it, X2 represents the longitudinal distance between the second side edge of the frame and the vertical rod 112 closest to it, and X3 represents the longitudinal distance between two adjacent frames, then the formula: X=X1+X2+X3 is satisfied. Through such an arrangement, it can be ensured that the distance between the vertical rod 112 at the tail end of the previous handrail bar unit 110 and the vertical rod 112 at the head end of the next handrail bar unit 110 is the same as the distance between two adjacent vertical rods 112 in each handrail bar unit 110, so that the plurality of vertical rods 112 of the handrail bar assembly 100 are evenly arranged at the same intervals. In some embodiments, the external support structure is a support unit 200 of a locomotive side suspension module, which includes a plurality of brackets 210 evenly arranged at the same intervals. By arranging the plurality of vertical bars 112 of the handrail bar assembly 100 at the same intervals and setting the spacing between adjacent vertical bars 112 to be the same as the spacing between adjacent brackets 210, it is ensured that the handrail bar assembly 100 can be properly installed and matched to the support unit 200. In addition, since the distance between adjacent vertical bars 112 is fixed, the welded handrail bar unit 110 can be used as a positioning or limiting tool for the support unit 200.

[0057] refer to Figure 3 and Figure 4 In some embodiments, the frame includes a bent surrounding rod 114 and a longitudinally extending straight rod 116. The two ends of the surrounding rod 114 are respectively welded to two vertical rods 112 located on both sides of the plurality of vertical rods. The straight rod 116 is welded between two adjacent vertical rods 112. The surrounding rod 114 can have four bending angles and have multiple longitudinal extension parts and vertical extension parts. Through such an arrangement, the amount of welding can be reduced, and the straight rod 116 can be set as short as possible to reduce the manufacturing cost. In a specific embodiment, the main body of the handrail rod unit 110 is welded by a surrounding rod 114, two straight rods 116, and three vertical rods 112. The surrounding rod 114 is bent 90 degrees 4 times.

[0058] refer to Figures 10 to 17In some embodiments, connectors 118 are provided on both longitudinal sides of the handrail bar unit 110, and the connectors 118 form matching grooves 1182. The two ends of the connection unit 120 are respectively fixed to the matching grooves 1182 of the two handrail bar units 110 by fixing members 130. Insertion parts 122 for inserting into the matching grooves 1182 are formed at the two ends of the connection unit 120, and a step is formed at the connection between the insertion part and the main body of the connection unit 120 so as to abut against the wall of the matching groove 1182. By inserting into the matching grooves 1182 and fixing by fixing members 130, the connection reliability between the handrail bar unit 110 and the connection unit 120 can be ensured. The connector 118 can be welded to the handrail bar unit 110.

[0059] In some embodiments, the fixing member 130 includes a screw 132 and a nut 134, and a through hole 1184 and a regular hexagonal hole 1186 matching the nut 134 are respectively provided on two opposite groove walls of the matching groove 1182. The regular hexagonal hole 1186 can limit the position of the nut 134 to prevent the nut 134 from rotating, so that during installation, there is no need to operate the nut 134 with a wrench. In addition, the nut 134 can be embedded in the regular hexagonal hole 1186 to improve aesthetics and safety.

[0060] In some embodiments, the position of the end of the connecting unit 120 in the matching groove 1182 is longitudinally adjustable, so as to accommodate the installation error between adjacent handrail bar units 110. The adjustment margin can be provided by setting the size of the through hole 1184 and the regular hexagonal hole 1186 larger than the size of the screw 132 and the nut 134, respectively.

[0061] In a specific embodiment, the connection unit 120 uses M8X30 hexagon socket round head screws and M8 standard nuts, and is connected to the connection piece 118 with a large gasket, so as to achieve the connection between adjacent handrail rod units 110. In theory, the number of handrail rod units 110 can be increased infinitely to complete the handrail assembly of the whole vehicle. A φ13mm through hole is provided on the A side of the connection piece 118, and a regular hexagonal hole is provided on the B side. The side length of the regular hexagonal hole is slightly longer than the side length of the M8 nut. A groove is provided in the middle of the connection piece 118 to match the end of the connection unit 120, and the distance between the two sides of the groove is slightly larger than the end of the connection unit 120. The two ends of the connection unit 120 are semicircular in shape, which facilitates the axial movement between the end and the connection piece 118, and has a beautiful appearance. Both ends of the connection unit 120 have a φ11mm through hole. The φ13mm through hole on the connector 118 and the φ11mm through hole at the end of the connection unit 120 are used in conjunction with the M8X30 screw and the M8 nut, so that the assembly connection between the adjacent handrail units 110 makes up for the installation error at the production site. The regular hexagonal hole on the B side of the connector directly acts as a "wrench" when installing the fastener. Only an M8 hexagonal wrench is needed to complete the handrail assembly, avoiding the trouble of using two wrenches for installation; as the screw is tightened, the nut penetrates into the regular hexagonal hole on the B side, and the outer side of the nut is lower than the outer plane on the B side of the connector, which can effectively prevent the fastener head from being exposed and causing possible damage to the driver and passengers.

[0062] Fig.18 A schematic diagram showing a support unit 200 of a side suspension module according to an embodiment of the present invention is shown, referring to Figures 3 to 7 and Fig.18The present invention also proposes a locomotive side suspension module, comprising: a support unit 200, the support unit 200 comprises a plurality of brackets 210 arranged at intervals in the longitudinal direction and a plurality of connecting beams 220 arranged at intervals in the longitudinal direction, each connecting beam 220 being connected between two adjacent brackets 210; a receiving groove 211 for receiving the vertical rod 112 is provided on the lateral outer side of the bracket 210; the lower areas of the plurality of vertical rods 112 of the handrail bar assembly 100 as described above are respectively fixed in the receiving grooves 211 of the plurality of brackets 210 by fasteners 216. The interior of the support unit 200 forms a receiving space, and the side suspension module may further comprise a side trim fixed to the lateral outer side of the connecting beam 220, a corridor floor fixed to the upper side of the connecting beam 220, and pipes and lines installed in the receiving space of the support unit 200. The lateral inner side of the bracket 210 can be detachably fixed to the locomotive chassis by fasteners, so that the handrail assembly 100 and other components such as side trim, corridor floor, pipelines and lines can be installed on the support unit 200 to form an integrated independent side suspension module, and then installed on the locomotive chassis. In this way, the side suspension module can be produced synchronously with other locomotive structures, which is conducive to improving the production efficiency of the locomotive. The present invention reasonably divides the support unit 200 into multiple installation areas for installing different components, ensuring that multiple functional components of the side suspension module are organically integrated without interfering with each other.

[0063] In an embodiment of the present invention, the assembling method of the support unit 200 may include the following steps:

[0064] The plurality of brackets 210 and the plurality of connecting beams 220 are alternately arranged in the longitudinal direction and preliminarily connected in sequence;

[0065] Adjust the positions of the multiple brackets 210 and the multiple connecting beams 220 so that the positions of the multiple brackets 210 correspond to the positions of the multiple vertical rods 112 one by one; that is, use the handrail assembly 100 as a positioning tool to adjust and position the brackets 210;

[0066] The bracket 210 and the connecting beam 220 are finally fixed to complete the assembly of the supporting unit 200 .

[0067] In a specific embodiment, the assembly method is as follows: first, a plurality of brackets 210 are arranged at a certain interval, the connecting beam 220 is pre-installed, and the mounting screws are fixed without torque. Next, the vertical rod 112 of the handrail assembly 100 is installed on the bracket 210. Since the handrail unit 110 is a welded structure, the spacing between the vertical rods 112 is not adjustable and can be used as a positioning tool. After the bracket 210 is fine-tuned to adapt to the handrail assembly 100, the mounting screws of the connecting beam 220 and the bracket 210 are tightened to complete the assembly of the support unit 200.

[0068] In some embodiments, a side opening is provided on the lateral outer side of the receiving slot 211, and the bracket 210 further includes a plurality of handrail mounting plates 212 with mounting holes 213 arranged in the side openings at intervals along the vertical direction; the side suspension module further includes a plurality of adjustment washers 215, each of which is arranged between each handrail mounting plate 212 and the vertical bar 112; and the interval 214 between adjacent handrail mounting plates 212 allows the adjustment washers 215 to be loaded. In this way, the adjustment washers 215 can be conveniently arranged between the vertical bar 112 and each handrail mounting plate 212, so that the verticality of the vertical bar 112 can be adjusted on the one hand, and the lateral position of the vertical bar 112 can be adjusted on the other hand, so as to ensure that the plurality of vertical bars 112 are neatly arranged in the same straight line.

[0069] The inventor of the present application realizes that although the assembly of the handrail assembly 100 and the support unit 200 can be conveniently installed by placing them outside the support unit 200, it is not conducive to improving the space utilization rate and may even exceed the limit of the locomotive. Therefore, in the present technical solution, the installation structure of the handrail assembly 100 is hidden in the support unit 200. However, there are still problems such as the inability to observe the installation status and the inability to adjust the height of the installation surface. Therefore, the present invention forms a box-shaped structure with the receiving groove for installing the handrail on the support unit 200 and multiple (for example, two) handrail mounting plates 212, and leaves sufficient installation gaps between the multiple handrail mounting plates 212. The gap allows the insertion of adjustment gaskets 215 to achieve the leveling of each handrail mounting surface, and the multiple mounting plates 212 can be individually installed with adjustment gaskets 215, so that the verticality of the handrail to the horizontal plane can be adjusted by adding or removing adjustment gaskets.

[0070] In summary, the present invention introduces the concept of modular handrail groups for grouping handrails to achieve modular manufacturing and assembly; through modular design, each handrail group (i.e., the handrail unit described above) has the characteristics of individual quick disassembly and assembly and a high reuse rate; the handrail can be prevented from rotating around the center of the rod axis; the connection between the handrail groups has a large adjustment amount; the risk of loosening at the screw connection of the three-way and four-way at the cross-connection of the handrail is eliminated; the characteristics of the side suspension module are fully considered, so that the installation point of the handrail on the side suspension module is arranged vertically, which greatly improves the stability of the handrail during application; while optimizing the process and improving product quality, the disassembly and assembly efficiency of the handrail group is improved. Since the parts in the handrail group are welded and connected without relative displacement, the instability of the handrail caused by the use of fasteners in the internal connection of the handrail group is avoided. The modular production of the handrail group is conducive to standardized production and product quality control. After modular grouping, each group uses welded handrails, and the stability after loading is greatly improved. Since each handrail group has the characteristics of being disassembled and assembled separately, when the equipment on the locomotive needs to be disassembled and assembled separately, the corresponding handrail group can be disassembled and assembled separately, which is convenient for the separate replacement and maintenance of the equipment on the vehicle. It can improve the production efficiency of the handrail group and the assembly efficiency of the whole vehicle handrail.

[0071] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A handrail assembly for a locomotive, characterized in that: include: A plurality of handrail bar units arranged in a longitudinal direction; A plurality of connection units, each of which is detachably connected between two adjacent handrail rod units; Wherein, the handrail bar unit is a welded frame structure and has a plurality of vertical bars, and a plurality of mounting holes arranged at intervals in the vertical direction are provided in the lower area of ​​the vertical bars, and the mounting holes are used to cooperate with fasteners to mount the vertical bars on the external support structure; The handrail rod unit includes a frame and a plurality of vertical rods welded to the frame and arranged at predetermined intervals in the longitudinal direction. X represents the predetermined interval, X1 represents the longitudinal distance between the first side edge of the frame and the vertical rod closest thereto, X2 represents the longitudinal distance between the second side edge of the frame and the vertical rod closest thereto, and X3 represents the longitudinal distance between two adjacent frames. Then the formula is satisfied: X=X1+X2+X3.

2. The handrail assembly according to claim 1, characterized in that: The lower region is used to be inserted into the receiving groove of the external supporting structure, and the upper side of the lower region forms a blocking portion protruding outward, and the blocking portion is used to fit with the upper end surface of the receiving groove.

3. The handrail assembly according to claim 1, characterized in that: The vertical rod comprises a rod body with a circular cross section, and the lower area has a vertical plane formed by cutting off a part of the rod body; the vertical rod also comprises a mounting plate welded to the vertical plane, and a plurality of mounting holes are formed on the mounting plate.

4. The handrail assembly according to claim 1, characterized in that: The frame includes a bent surrounding rod and a longitudinally extending straight rod. Two ends of the surrounding rod are respectively welded to two vertical rods located on both sides of the plurality of vertical rods, and the straight rod is welded between two adjacent vertical rods.

5. The handrail assembly according to claim 1, characterized in that: Connecting pieces are provided on both longitudinal sides of the handrail bar unit, and the connecting pieces form matching grooves. Both ends of the connecting unit are respectively fixed to the matching grooves of the two handrail bar units through fixing pieces.

6. The handrail assembly according to claim 5, characterized in that: The fixing member comprises a screw and a nut, and two opposite groove walls of the matching groove are respectively provided with a through hole and a regular hexagonal hole matching the nut.

7. The handrail assembly according to claim 5, characterized in that: The position of the end of the connecting unit in the matching groove is adjustable in the longitudinal direction.

8. A locomotive side suspension module, characterized in that: include: An external support structure, wherein the external support structure is a support unit, and the support unit comprises a plurality of brackets arranged at intervals in the longitudinal direction and a plurality of connecting beams arranged at intervals in the longitudinal direction, each connecting beam being connected between adjacent brackets; a receiving groove is provided on the lateral outer side of the bracket; According to the handrail bar assembly as described in any one of claims 1 to 7, lower areas of the plurality of vertical bars are respectively fixed in the receiving grooves of the plurality of brackets by fasteners.

9. The side suspension module according to claim 8, characterized in that: A side opening is provided on the lateral outer side of the receiving groove, and the bracket also includes a plurality of handrail rod mounting plates arranged in the side opening along the vertical interval; the side suspension module also includes a plurality of adjustment gaskets, each of which is arranged between each handrail rod mounting plate and the vertical rod; the interval between adjacent handrail rod mounting plates allows the adjustment gasket to be installed.

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