Log railway transportation flatcar

Abstract

The invention discloses a log railway transportation flatcar which comprises a bottom frame, an upper frame and a lower frame. The multiple brackets are arranged on the bottom frame at intervals in the longitudinal direction, each bracket is provided with an opening and a containing groove communicated with the opening, and the opening faces away from the bottom frame; the anti-skid part is arranged in the containing groove and limits the logs to move in the longitudinal direction; the bottom wall of the containing groove bears logs, and the two side walls of the containing groove limit the logs to move in the transverse direction. According to the railway transportation flat car for the logs, the independent brackets are arranged on the bottom frame in the longitudinal direction at intervals, the anti-skid parts are integrated in the containing grooves of the brackets, the brackets can effectively limit the longitudinal and transverse displacement of the logs when bearing the logs, and the special flat car for railway transportation of the logs is provided; therefore, the loading and unloading efficiency and the transportation safety of the logs are obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway transportation, and in particular to a railway flat car for transporting logs. BACKGROUND

[0002] In the field of railway freight transportation, logs are a common bulk cargo, and the transportation mode thereof has long been lacking in support from railway vehicle equipment. At present, the general open wagon is commonly used as a substitute solution for log railway transportation operations in China.

[0003] However, the existing open wagon has end side walls, and the operation is complex and inefficient when loading and unloading logs, and the loader hook is prone to touching the vehicle body, causing damage to the equipment. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a railway flat car for transporting logs to solve the technical problem of the existing open wagon having end side walls, complex operation when loading and unloading logs, low efficiency, and the loader hook being prone to touching the vehicle body, causing damage to the equipment.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: The present application provides a railway flat car for transporting logs, comprising: a chassis having a no-edge-beam-fishbone structure; a plurality of brackets, the plurality of brackets being arranged in the longitudinal direction on the chassis, the bracket having an opening and a containing groove in communication with the opening, the opening facing away from the chassis; an anti-skid part arranged in the containing groove, the anti-skid part limiting the longitudinal movement of the logs; wherein the bottom wall of the containing groove bears the logs, and the two side walls of the containing groove limit the transverse movement of the logs.

[0006] In some embodiments, the bracket and the chassis are detachably connected.

[0007] In some embodiments, the bracket comprises a horizontal column and a vertical column, the vertical column comprising a first vertical column and a second vertical column, the horizontal column extending in the transverse direction, and the first vertical column and the second vertical column being connected to the two ends of the horizontal column, respectively; the first vertical column, the second vertical column, and the horizontal column enclose the opening and the containing groove, and the anti-skid part is arranged in at least one of the first vertical column, the second vertical column, and the horizontal column. The first vertical column and the second vertical column are configured as the two side walls of the containing groove, and the horizontal column is configured as the bottom wall of the containing groove.

[0008] In some embodiments, the anti-skid part is sawtooth-shaped.

[0009] In some embodiments, the chassis is provided with a plurality of first mounting portions along the longitudinal direction; the bracket further comprises a mounting seat provided on the cross column, and the mounting seat is provided with a second mounting portion; the first mounting portion and the second mounting portion are detachably connected.

[0010] In some embodiments, the first mounting portion has a first through hole, the second mounting portion has a second through hole, the first through hole and the second through hole are correspondingly arranged, and the first through hole and the corresponding second through hole are detachably connected through a locking member.

[0011] In some embodiments, the bracket further comprises a first backing plate and / or a second backing plate; the first backing plate is arranged between the mounting seat and the chassis; and the second backing plate is arranged between the cross column and the chassis.

[0012] In some embodiments, the chassis comprises a middle beam and a cross beam connected to the middle beam, and the bracket is connected to the cross beam.

[0013] In some embodiments, the middle beam is a variable cross-section fish-belly box girder, and the middle beam is provided with a first weight-reducing hole.

[0014] In some embodiments, the cross beam is a group-welded box structure, and the cross beam is provided with a second weight-reducing hole.

[0015] In some embodiments, the chassis further comprises a sleeper beam connected to the middle beam, and the sleeper beam is provided with a mounting hole for mounting a side bearing wearing plate.

[0016] In some embodiments, the sleeper beam is a group-welded box structure, and the sleeper beam is provided with a third weight-reducing hole.

[0017] In some embodiments, the chassis further comprises a protective baffle connected to two adjacent cross beams and connected to the middle beam.

[0018] The log railway transport flat car of the present application removes the end side walls on both sides of the traditional open car through the no-side-beam fishbone structure chassis, forms a completely open loading platform, so that the grapple of the loader can perform vertical or lateral grabbing operation from both sides and above the vehicle, realizes the rapid stacking and unloading of logs; and the bracket supports the logs so that the bearing surface of the logs is higher than the upper side surface of the chassis, which can effectively prevent damage to the vehicle body during the operation of the loader; a plurality of independent brackets are arranged on the chassis along the longitudinal direction, and the containing groove of the bracket is integrated with an anti-skid part, so that the bracket can effectively limit the longitudinal and lateral displacement of the logs when bearing the logs, and the special flat car for log railway transportation is proposed, thereby significantly improving the loading and unloading efficiency and transportation safety of logs.

[0019] The above description is only a summary of the technical scheme of the present application, in order to make the technical means of the present application more clearly understood, the content of the specification can be implemented, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective structural schematic view of the log railway transport flatcar of the embodiment of the present application. Figure 2 It is a side view structural schematic view of the log railway transport flatcar of the embodiment of the present application. Figure 3 It is a perspective structural schematic view of the bracket of the log railway transport flatcar of the embodiment of the present application. Figure 4 It is a front view structural schematic view of the bracket of the log railway transport flatcar of the embodiment of the present application. Figure 5 It is a perspective structural schematic view of the bottom frame of the log railway transport flatcar of the embodiment of the present application. Figure 6 It is a schematic view of the internal structure of the middle beam of the log railway transport flatcar of the embodiment of the present application. Figure 7 It is a perspective structural schematic view of the cross beam of the log railway transport flatcar of the embodiment of the present application. Figure 8 It is a perspective structural schematic view of the sleeper beam of the log railway transport flatcar of the embodiment of the present application. Figure 9 It is a perspective structural schematic view of the following device of the log railway transport flatcar of the embodiment of the present application.

[0021] Explanation of reference signs: 1, bottom frame; 11, middle beam; 12, sleeper beam; 13, cross beam; 14, following device; 15, end beam; 16, protective baffle; 111, first cover plate; 112, second cover plate; 113, first web plate; 114, partition plate; 121, third cover plate; 122, fourth cover plate; 123, second web plate; 124, first sealing plate; 131, fifth cover plate; 132, sixth cover plate; 133, third web plate; 134, second sealing plate; 141, handrail; 142, footrest; 2, bracket; 21, vertical column; 22, sawtooth; 23, horizontal column; 24, mounting seat; 25, second pad plate; 26, first pad plate; 3, air brake device; 4, hand brake device; 5, car coupler buffer device; 6, bogie. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical schemes and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the drawings and specific embodiments.

[0023] Clearly, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship described based on the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be connected, or detachable, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Referring to Figures 1-2 The embodiment of the present application provides a log railway transport flat car, which comprises a chassis 1, which is a no-side-beam fishbone structure; a plurality of brackets 2, which are arranged on the chassis 1 in a longitudinal direction at intervals, the bracket 2 has an opening and a containing groove in communication with the opening, and the opening faces away from the chassis; an anti-skid part 22 arranged in the containing groove, which limits the longitudinal movement of the log; wherein the bottom wall of the containing groove bears the log, and the two side walls of the containing groove limit the transverse movement of the log. Wherein the no-side-beam fishbone structure refers to the chassis 1 in the embodiment being a fishbone structure without two side walls, and the fishbone structure can be composed of a middle beam 11, a cross beam 13 and a bolster 12.

[0030] It should be explained that the longitudinal direction refers to the length direction of the car body, and the transverse direction refers to the width direction of the car body. The embodiment arranges a plurality of independent brackets 2 on the chassis 1 in a longitudinal direction at intervals, and integrates the containing groove of the bracket 2 with the anti-skid part 22, so that the bracket 2 can effectively limit the longitudinal and transverse displacement of the log when bearing the log, and a special flat car for log railway transportation is proposed, thereby significantly improving the loading and unloading efficiency and transportation safety of the log.

[0031] It can be understood that the no-side-beam fishbone structure chassis 1 of the embodiment solves the problem that the existing general open car has a high end side wall, which forms a huge physical obstacle when loading and unloading logs, resulting in the problem that the loader cannot directly and efficiently work. Specifically, the no-side-beam fishbone structure chassis 1 of the embodiment removes the end side walls on both sides of the traditional open car, forming a completely open loading platform, so that the grappling hook of the loader can be vertically or laterally grabbed from both sides and above the vehicle, realizing the rapid stacking and unloading of logs. Further, the bracket 2 bottom wall, i.e. the containing groove bottom wall in the embodiment, as a structure for supporting the log, makes the bearing surface of the log significantly higher than the upper side of the chassis 1, which can effectively prevent damage to the car body during the loader operation.

[0032] Preferably, the plurality of brackets 2 are arranged on the chassis 1 at equal intervals in the longitudinal direction.

[0033] In some embodiments, the bracket 2 and the chassis 1 are detachably connected.

[0034] In actual operation, when a certain bracket 2 is worn or damaged, maintenance personnel only need to disassemble the connecting parts of the bracket 2 for replacement or repair, without the need for large-scale modification of the entire vehicle structure. In addition, for logs of different length specifications, the stress distribution can be optimized by changing the number, spacing and mounting position of the brackets 2, thereby improving the safety and economy of transportation.

[0035] In some embodiments, the bracket 2 includes a cross column 23 and a vertical column 21, the vertical column 21 includes a first vertical column and a second vertical column, the cross column 23 extends in the transverse direction, and the first vertical column and the second vertical column are respectively connected to two ends of the cross column 23; the first vertical column, the second vertical column and the cross column 23 enclose an opening and a receiving groove, and the anti-skid part 22 is arranged on at least one of the first vertical column, the second vertical column and the cross column 23; wherein the first vertical column and the second vertical column are configured as two side walls of the receiving groove, and the cross column 23 is configured as a bottom wall of the receiving groove.

[0036] It can be understood that the first vertical column and the second vertical column are respectively located at two ends of the cross column 23 in the transverse direction, and the three are connected to form a stable U-shaped limiting space, and the loading and unloading equipment can be operated from the opening above the frame or from the side, so that the loading and unloading process is simplified and the operation time is greatly shortened. The anti-skid part 22 can be arranged at one or more of the inner side surface of the first vertical column, the inner side surface of the second vertical column and the upper surface of the cross column 23, and when the log is placed in the receiving groove, the anti-skid part 22 realizes effective constraint on the log by increasing the friction force of the contact points. Among them, the first vertical column and the second vertical column mainly bear the lateral force generated by the lateral rolling of the log, and the cross column 23 bears the vertical load of the weight of the log; when the log tries to move laterally, it will be blocked by the two side vertical columns 21; when the log has a tendency to move in the direction of the flat car, the anti-skid part 22 arranged on the inner side of the first vertical column, the second vertical column and the cross column 23 inhibits it by increasing the friction force. Compared with the traditional open car relying on external binding materials, the bracket 2 of the present design integrates the constraint function into the flat car to realize comprehensive restriction of the log in multiple degrees of freedom, thereby significantly improving the safety of transportation.

[0037] In some embodiments, the anti-skid part 22 is sawtooth-shaped. Optionally, the anti-skid part 22 is arranged on at least one of the first vertical column, the second vertical column and the cross column 23, and the anti-skid part 22 is a sawtooth. In actual implementation, the anti-skid part 22 can be a sawtooth integrally formed on the bracket 2 through a mechanical processing or pressing process, or it can be a separate sawtooth-shaped part fixed in a specified position through welding or detachable connection. In actual installation, the tooth tips of the sawtooth-shaped anti-skid part 22 face the inside of the receiving groove, ensuring that the maximum contact resistance is formed with the surface of the log, so that when the log has a tendency to move during transportation, the anti-skid part 22 can timely "engage" the surface of the log to provide continuous anti-skid resistance.

[0038] Preferably, the first upright column, the second upright column and the cross column 23 are provided with anti-skid parts 22.

[0039] In some embodiments, the chassis 1 is provided with a plurality of first mounting parts at intervals in the longitudinal direction; the bracket 2 further comprises a mounting seat 24 provided on the cross column 23, the mounting seat 24 is provided with second mounting parts; the first mounting parts and the second mounting parts are detachably connected. Optionally, a reinforcing rib is arranged between the mounting seat 24 and the cross column 23.

[0040] It can be understood that the interval arrangement of the first mounting parts on the cross beam 13 of the chassis 1 provides a reference for the standardized installation of the bracket 2, and the mounting seat 24 serves as a connecting conversion part to achieve smooth force flow transmission from the bracket 2 to the chassis 1.

[0041] In some embodiments, the first mounting parts have first through holes, the second mounting parts have second through holes, the first through holes and the second through holes are correspondingly arranged, and the first through holes and the corresponding second through holes are detachably connected through locking members.

[0042] It can be understood that the first through holes are arranged on the chassis 1 to form standardized mounting points, and the second through holes are arranged on the mounting seat 24, and the number, diameter and pitch of the second through holes and the first through holes are completely matched. During installation, the locking members such as bolts are sequentially inserted through the second through holes of the mounting seat 24 and the first through holes of the chassis 1, and then the lock nuts are tightened, so as to realize reliable connection and fixation.

[0043] In some embodiments, the bracket 2 further comprises a first gusset plate 26 and / or a second gusset plate 25; the first gusset plate 26 is arranged between the mounting seat 24 and the chassis 1; and the second gusset plate 25 is arranged between the cross column 23 and the chassis 1.

[0044] Optionally, the first gusset plate 26 effectively increases the contact area by filling the assembly gap between the mounting seat 24 and the chassis 1, so that the bolt pre-tightening force is uniformly transmitted to the entire contact area, preventing the mounting seat 24 from deforming under the action of the bolt pre-tightening force. The second gusset plate 25 converts concentrated load into distributed load by establishing continuous support between the cross column 23 and the chassis 1, significantly improves the stress state, and avoids indentation deformation on the surface of the chassis 1.

[0045] In some embodiments, the chassis 1 comprises a middle beam 11 and a cross beam 13 connected to the middle beam 11, and the bracket 2 is connected to the cross beam 13. Specifically, the cross beam 13 is connected to the middle beam 11 on both sides in the transverse direction, and the bracket 2 is connected to the cross beam 13 arranged on both sides of the middle beam 11.

[0046] Optionally, the middle beam 11 of the chassis 1 is arranged along the longitudinal direction of the flat car as the main load-bearing component; a plurality of cross beams 13 are connected symmetrically on both sides of the middle beam 11 perpendicularly to the middle beam 11 to form a stable grid-shaped support structure. The bracket 2 is fixedly installed on the cross beam 13 through the connecting piece to form uniformly distributed log load points. Optionally, the cross beam 13 is connected with the middle beam 11 through welding or bolt connection.

[0047] In some embodiments, the middle beam 11 is a variable cross-section fish belly box girder, and the middle beam 11 is provided with a first lightening hole.

[0048] It should be explained that the middle beam 11 adopts a variable cross-section fish belly structure, that is, the cross-sectional size of the middle beam 11 changes along the length direction, the middle part has a larger cross section and the two ends have a smaller cross section, which looks like a fish belly.

[0049] Optionally, the middle beam 11 is composed of a first cover plate 111, a second cover plate 112, a first web plate 113 and a partition plate 114, and is formed by welding to form a closed box-shaped cross section. The first cover plate 111 and the second cover plate 112 constitute the upper and lower flanges of the middle beam 11 and mainly bear the bending stress; the first web plate 113 connects the first cover plate 111 and the second cover plate 112 and mainly bears the shear stress; the first partition plate 114 is arranged inside the middle beam 11 at intervals and is used for preventing the first web plate 113 from losing stability and improving the local stability of the middle beam 11. The first lightening hole is arranged at the strength surplus position of the bottom of the middle beam 11, and the purpose is to remove the redundant material and reduce the self weight of the flat car on the premise of ensuring the structural strength.

[0050] In some embodiments, the cross beam 13 is in a welded box-shaped structure, and the cross beam 13 is provided with a second lightening hole.

[0051] Optionally, the cross beam 13 is composed of a third cover plate 121, a fourth cover plate 122, a second web plate 123 and a first sealing plate 124. It can be understood that the third cover plate 121 and the fourth cover plate 122 bear the longitudinal bending stress as the main force flange; the second web plate 123 connects the third cover plate 121 and the fourth cover plate 122 and bears the shear stress; the first sealing plate 124 connects the third cover plate 121, the fourth cover plate 122 and the second web plate 123 to ensure the cross section closed; the second lightening hole is determined in size, shape and position through finite element analysis to ensure that the material is removed to reduce the weight while not adversely affecting the strength of the key parts, and the purpose is to remove the redundant material and reduce the self weight of the flat car on the premise of ensuring the structural strength.

[0052] In some embodiments, the chassis 1 further comprises a sleeper 12 connected to the middle beam 11, and the sleeper 12 is provided with a mounting hole for mounting a side bearing wearing plate. Specifically, the sleeper 12 is connected to the middle beam 11 on both sides of the transverse direction, and the mounting hole is arranged on the side of the sleeper 12 facing the ground.

[0053] It should be explained that traditional railway vehicles require a separate upper side bearing support to install the side bearing wear plate. However, in this embodiment, the sleeper beam 12 has an installation hole on the side facing the ground. The side bearing wear plate is directly fixed to the sleeper beam 12 through this installation hole, and the side bearing support function is directly integrated into the sleeper beam 12, eliminating the need for the installation of the upper side bearing support and effectively reducing the weight of the flatcar.

[0054] In some embodiments, the bolster beam 12 has a welded box-shaped structure, and the bolster beam 12 is provided with a third weight-reducing hole.

[0055] Optionally, the bolster beam 12 is welded together from a fifth cover plate 131, a sixth cover plate 132, a third web plate 133, and a second sealing plate 134. The fifth cover plate 131 serves as the main compression flange, bearing bending stress; the sixth cover plate 132 has a load-bearing surface that contacts the bogie 6 and has mounting holes; the third web plate 133 connects the fifth cover plate 131 and the sixth cover plate 132, bearing shear stress; the second sealing plate 134 encloses the box-shaped section formed by the third web plate 133, the fifth cover plate 131, and the sixth cover plate 132, improving torsional stiffness. The size, shape, and location of the third weight-reducing hole are determined through finite element analysis, aiming to remove excess material and reduce the flatcar's self-weight while ensuring structural strength.

[0056] In some embodiments, the base frame 1 further includes a protective baffle 16, which is connected to two adjacent crossbeams 13 and to the middle beam 11. Specifically, the adjacent crossbeams 13 and the middle beam 11 located on the same side of the middle beam 11 enclose an installation space, and the protective baffle 16 is located in the installation space and connected to the middle beam 11 and the crossbeams 13.

[0057] Specifically, the protective baffle 16 is welded together from a protective plate and a connecting beam. The protective plate is made of steel plate with certain strength and rigidity, and its size matches the installation space. The connecting beam is fixed to the back of the protective plate and is fixedly connected to the first web plate 113 of the middle beam 11 and the second web plate 123 of the crossbeam 13, respectively. In this embodiment, the protective baffle 16 effectively prevents accidental falling objects from damaging the components under the base frame 1 during the loading and unloading of logs.

[0058] In some embodiments, the flatcar of this embodiment further includes a following device 14, which includes a handrail 141 and / or a footrest 142. The footrest 142 is used to provide a stable footing space for workers and is specifically installed in the lower part between the end beam 15 and the crossbeam 13 of the flatcar. It is reliably fixed to the end beam 15 and the crossbeam 13 by welding or high-strength bolts, so that workers can easily step onto it from the ground. The handrail 141 is correspondingly located in the upper part between the end beam 15 and the crossbeam 13, in the same vertical area as the footrest 142. It is firmly connected to the end beam 15 and the crossbeam 13, providing workers with a stable gripping point.

[0059] In some embodiments, the flatcar of this embodiment also includes an air brake device 3, a hand brake device 4, a coupler buffer device 5, and a bogie 6. It is understood that the specific configuration of the air brake device 3, hand brake device 4, coupler buffer device 5, and bogie 6 are technical means known in the art and will not be described in detail here.

[0060] The above examples are merely illustrative of the technical content of the present invention to facilitate easier understanding by the reader, but do not imply that the implementation of the present invention is limited to these examples. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A log railway flatcar, characterized in that, include: The base frame is a herringbone structure without side beams; Multiple brackets are longitudinally spaced on the base frame, each bracket having an opening and a receiving groove communicating with the opening, the openings facing away from the base frame; An anti-slip part is provided in the receiving groove, which restricts the longitudinal movement of the log; The bottom wall of the receiving groove supports the log, and the two side walls of the receiving groove restrict the log from moving laterally.

2. The log railway flatcar according to claim 1, characterized in that, The bracket and the base frame are detachably connected.

3. The log railway flatcar according to claim 1, characterized in that, The bracket includes a horizontal column and a vertical column. The vertical column includes a first vertical column and a second vertical column. The horizontal column extends laterally. The first vertical column and the second vertical column are respectively connected to both ends of the horizontal column. The first vertical column, the second vertical column, and the horizontal column enclose the opening and the receiving groove. The anti-slip part is provided in at least one of the first vertical column, the second vertical column, and the horizontal column. The first column and the second column are configured as the two side walls of the receiving groove, and the horizontal column is configured as the bottom wall of the receiving groove.

4. The log railway flatcar according to claim 1, characterized in that, The anti-slip part is serrated.

5. The log railway flatcar according to claim 1, characterized in that, The base frame is provided with a plurality of first mounting parts at intervals along the longitudinal direction; the bracket also includes a mounting seat provided on the cross column, and the mounting seat is provided with a second mounting part; the first mounting parts and the second mounting parts are detachably connected.

6. The log railway flatcar according to claim 5, characterized in that, The first mounting part has a first through hole, and the second mounting part has a second through hole. The first through hole and the second through hole are correspondingly arranged, and the first through hole and the corresponding second through hole are detachably connected by a locking member.

7. The log railway flatcar according to claim 5, characterized in that, The bracket further includes a first pad and / or a second pad; the first pad is disposed between the mounting base and the base frame; the second pad is disposed between the crossbar and the base frame.

8. The log railway flatcar according to claim 1, characterized in that, The base frame includes a central beam, a crossbeam connected to the central beam, and a bracket connected to the crossbeam.

9. The log railway flatcar according to claim 8, characterized in that, The central beam is a variable cross-section fish-belly box girder, and the central beam has a first weight-reduction hole.

10. The log railway flatcar according to claim 8, characterized in that, The crossbeam has a welded box-shaped structure, and the crossbeam is provided with a second weight-reducing hole.

11. The log railway flatcar according to claim 8, characterized in that, The base frame also includes a bolster beam connected to the central beam, the bolster beam being provided with mounting holes for mounting the side bearing wear plates.

12. The log railway flatcar according to claim 11, characterized in that, The bolster beam has a welded box-shaped structure, and the bolster beam is provided with a third weight-reducing hole.

13. The log railway flatcar according to claim 8, characterized in that, The base frame also includes: The protective baffle is connected to the two adjacent crossbeams and to the middle beam.

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