Structure of a flat car with a concave bottom

Abstract

The present invention discloses a structure of a well-bottom flat car, which includes a well-bottom frame (1) and two running gears (2). The two ends of the well-bottom frame (1) are provided with hollow structures (1a), and the lower ends of the hollow structures (1a) are open. The structure also includes two lifting devices, and each lifting device includes a center plate component (3) and a driving component (4). The lower end of the center plate component (3) is supported on the corresponding running gear (2), and the upper end of the center plate component (3) is longitudinally limited and inserted into the corresponding hollow structure (1a). The driving component is fixed to the upper end of the well-bottom frame (1), and the driving component has an output shaft, and the output shaft can pass through the well-bottom frame (1) to abut against the center plate component (3). In the structure of the well-bottom flat car of the present invention, hollow structures are provided at both ends of the well-bottom frame, and the upper ends of the center plate components are longitudinally limited and inserted into the hollow structures, so that the center plate components bear the longitudinal loads, ensuring the safety of train operation.

Description

Technical Field

[0001] The present invention relates to the technical field of railway freight cars, and particularly relates to a structure of a well - bottom flat car. Background Art

[0002] In a well - bottom flat car, the depression in the middle of the well - bottom frame is relatively close to the track. To avoid obstacles below, the well - bottom frame is usually set in a liftable form to facilitate lifting the well - bottom frame when there are obstacles below.

[0003] In the existing well - bottom flat cars, hydraulic cylinders are usually used as lifting devices. The lifting and lowering of the well - bottom frame are driven by the telescopic movement of the hydraulic cylinders. The hydraulic cylinders are integrated with the steel structure. The longitudinal forces generated during vehicle running are transmitted through the hydraulic cylinders and locked by lock nuts. However, when the hydraulic cylinders bear radial loads, leakage is likely to occur, affecting the running safety of the vehicle. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure of a well - bottom flat car to improve the running safety.

[0005] To solve the above - mentioned technical problems, the present invention provides a structure of a well - bottom flat car, which includes a well - bottom frame and two running gears. The two ends of the well - bottom frame are provided with hollow structures, and the lower ends of the hollow structures are open.

[0006] The structure further includes two lifting devices. Each lifting device includes a center plate component and a driving component. The lower end of the center plate component is supported on the corresponding running gear, and the upper end of the center plate component is longitudinally limited and inserted into the corresponding hollow structure. The driving component is fixed on the upper end wall of the well - bottom frame. The driving component has an output shaft, and the output shaft can pass through the well - bottom frame to abut against the center plate component.

[0007] In the structure of the well - bottom flat car of the present invention, the structure of the well - bottom frame is improved. Specifically, hollow structures are provided at both ends of the well - bottom frame, and the upper ends of the center plate components are longitudinally limited and inserted into the hollow structures. During vehicle running, the center plate components can bear the longitudinal loads, rather than the driving components such as hydraulic cylinders bearing the longitudinal forces. The structure is stable, avoiding phenomena such as oil leakage and improving the running safety. The driving components are fixed on the upper end wall of the well - bottom frame and only need to realize the lifting function of the well - bottom frame. Specifically, when the driving component needs to lift, the output shaft abuts against the center plate component and gradually extends outwards to drive the well - bottom frame to move upwards gradually. When the driving component needs to lower, the output shaft gradually contracts inwards to drive the well - bottom frame to move downwards gradually. It can be seen that in this application, the driving components only need to bear the vertical loads, improving the service life of the driving components.

[0008] Optionally, the lifting device further includes at least one locking member that can be inserted into the bolster member, and both ends of the locking member can pass through the bolster member to abut against the lower end surface of the well car body when the well car body is lifted to the running state; the locking member can also be detached from the bolster member.

[0009] Optionally, the bolster member includes a bolster beam provided with at least one longitudinally communicating mounting slot hole, and the locking members pass through the mounting slot holes in one-to-one correspondence.

[0010] Optionally, the bolster member further includes a bolster connected to the lower end of the bolster beam. The running part includes a small car body provided with a receiving groove, and the bolster is located inside the receiving groove.

[0011] Optionally, a limiting wall is further provided at a position of the bolster member close to the running part. When both ends of the well car body descend to abut against the limiting wall, the middle recess of the well car body is supported on the ground.

[0012] Optionally, the hollow structure is a shell-like structure with only the lower end open, formed by enclosing a closed upper wall at the upper end, closed longitudinal walls at the longitudinal two ends, and webs at the transverse two ends. The upper side wall of the closed upper wall is fixedly connected to the webs in the middle, and the closed upper wall has a through hole for the output shaft to pass through.

[0013] Optionally, it further includes a device connecting device installed on the upper bearing surface of the well car body, and the device connecting device can move longitudinally relative to the well car body.

[0014] Optionally, the device connecting device includes a slide rail and a connecting seat. The slide rail is fixed on the upper bearing surface of the well car body and extends longitudinally. Among the slide rail and the connecting seat, one is provided with a guiding protrusion, and the other is provided with a guiding groove. The connecting seat is supported on the slide rail, and the guiding protrusion is installed inside the guiding groove.

[0015] Optionally, the device connecting device is installed at both ends of the well car body and / or the middle recess of the well car body.

[0016] Optionally, the driving member is a hydraulic cylinder. The hydraulic cylinder includes a cylinder body and a push rod. The push rod is the output shaft. The cylinder body is fixed on the upper end surface of the well car body. The well car body is provided with a guiding channel communicating with the hollow structure. The push rod passes through the well car body and abuts against the bolster member. Description of the Drawings

[0017] Figure 1Structural schematic diagram of a specific embodiment of the structure of the well-bottom flat car provided by the present invention;

[0018] Figure 2 is Figure 1 Partial enlarged view of the well-bottom flat car structure;

[0019] Figure 3 is Figure 1 Structural schematic diagram of the well-bottom flat car structure with the running gear removed;

[0020] Figure 4 is Figure 1 Partial enlarged view;

[0021] Figure 5 is Figure 1 Structural schematic diagram of the center plate component of the well-bottom flat car structure;

[0022] Figure 6 is Figure 5 Structural schematic diagram of the center plate component from another angle;

[0023] Figure 7 is Figure 1 Structural schematic diagram of the equipment connection device in the well-bottom flat car structure;

[0024] Figure 8 is Figure 7 Structural schematic diagram of the equipment connection device from another angle;

[0025] Among them, Figures 1 - 8 the reference numerals in are explained as follows:

[0026] 1 - Well-bottom frame; 1a - Hollow structure; 10 - Closed upper wall; 11 - Lower end plate; 12 - Upper end plate; 13 - Web; 14 - Partition;

[0027] 2 - Running gear; 21 - Small bottom frame;

[0028] 3 - Center plate component; 31 - Center plate beam; 31a - Installation slot; 32 - Center plate; 33 - Limiting wall;

[0029] 4 - Driving component;

[0030] 5 - Locking component;

[0031] 6 - Equipment connection device; 61 - Slide rail; 62 - Connection seat. Specific implementation manner

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] As used herein, terms such as "first" and "second" are merely for the convenience of describing two or more structures or components with the same or similar structures and / or functions, and do not represent any special limitation on the order and / or importance.

[0034] As used herein, "a number of" refers to an indefinite number of, usually more than two; and when "a number of" is used to indicate the quantity of several components, it does not represent the mutual relationship in quantity of these components.

[0035] In this article, the moving direction along the vehicle body is the longitudinal direction.

[0036] Please refer to Figures 1 - 4 , Figure 1 which is a schematic structural diagram of a specific embodiment of the well - bottom flat car structure provided by the present invention; Figure 2 is Figure 1 a partially enlarged view of the well - bottom flat car structure; Figure 3 is Figure 1 a schematic structural diagram of the well - bottom flat car structure removing the running gear; Figure 4 is Figure 1 a partially enlarged view.

[0037] The present invention provides a well - bottom flat car structure, which includes a well - bottom frame 1 and two running gears 2. The two ends of the well - bottom frame 1 are provided with hollow structures 1a, and the lower ends of the hollow structures 1a are open.

[0038] It further includes two lifting devices. The lifting device includes a center plate component 3 and a driving component 4. The lower end of the center plate component 3 is supported on the corresponding running gear 2, the upper end of the center plate component 3 is longitudinally limited and inserted into the corresponding hollow structure 1a internally, the driving component 4 is fixed on the upper end wall of the well - bottom frame 1, the driving component 4 has an output shaft, and the output shaft can pass through the well - bottom frame 1 to abut against the center plate component 3.

[0039] For the well - bottom flat car structure of the present invention, the structure of the well - bottom frame 1 is improved. Specifically, hollow structures 1a are provided at both ends of the well - bottom frame 1, and the upper ends of the center plate components 3 are longitudinally limited and inserted into the hollow structures 1a internally. During the running of the vehicle, the center plate components 3 can play the role of bearing longitudinal loads, rather than the driving component 4, such as a hydraulic cylinder, bearing longitudinal forces. The structure is stable, avoiding phenomena such as oil leakage, and improving the driving safety; while the driving component 4 is fixed on the upper end wall of the well - bottom frame 1, and only needs to realize the lifting function of the well - bottom frame 1. Specifically, when the driving component 4 needs to be lifted, the output shaft abuts against the center plate component 3 and gradually extends outwards to drive the well - bottom frame 1 to move upwards gradually; when the driving component 4 needs to be lowered, the output shaft gradually contracts inwards to drive the well - bottom frame 1 to move downwards gradually. It can be seen that in this application, the driving component 4 only needs to bear the vertical load, improving the service life of the driving component 4.

[0040] Further, the lifting device further includes at least one locking member 5. The locking member 5 can be inserted into the bolster member 3, and both ends of the locking member 5 can pass through the bolster member 3 to abut against the lower end face of the well car body 1 when the well car body 1 is lifted to the running state. The locking member 5 can also be detached from the bolster member 3.

[0041] With the above arrangement, the locking member 5 can play a role in vertical limit, fixing the well car body 1 in the running state. In this way, the driving member 4 only needs to drive the well car body 1 to move during the lifting process. When the well car body 1 is lifted to the running state and the locking member 5 is inserted into the bolster member 3, the locking member 5 will bear the vertical load, and the output shaft of the driving member 4 does not need to bear the vertical load. At this time, the output shaft of the driving member 4 can be retracted and no longer abuts against the bolster member 3, further improving the service life of the driving member 4. When the well car body 1 needs to descend, the output shaft of the driving member 4 can be first extended to abut against the bolster member 3, then the locking member 5 is withdrawn, and then the output shaft is gradually retracted to realize the slow descent of the well car body 1.

[0042] Of course, the output shaft of the driving member 4 can also be fixedly connected to the upper end of the bolster member 3. At this time, the output shaft cannot be retracted, but the output shaft no longer bears the vertical load, which can also play a role in improving the service life of the driving member 4.

[0043] Please continue to refer to Figure 3 , the well car body 1 includes a lower end plate 11, an upper end plate 12, a plurality of webs 13 connecting the upper end plate 12 and the lower end plate 11, and a plurality of partitions 14. The webs 13 extend longitudinally, and the plurality of webs are distributed transversely. The partitions 14 are located outside the webs 13 at both transverse ends, and the partitions 14 are fixed to the webs 13, the upper end plate 12, and the lower end plate 11 at the same time, improving the structural strength of the well car body 1.

[0044] It can be seen from Figure 4 that in this embodiment, the hollow structure 1a is a shell-like structure with only the lower end open, formed by enclosing a closed upper wall 10 at the upper end, closed longitudinal walls at both longitudinal ends, and webs at both transverse ends. The upper side wall of the closed upper wall 10 is fixedly connected to the webs in the middle at the same time. The closed upper wall 10 has a through hole for the output shaft, that is, the push rod of the hydraulic cylinder, to pass through. With the above arrangement, even if the hollow structure 1a is opened at both ends of the well car body 1, the structural strength of both ends of the well car body 1 can be ensured.

[0045] Among them, the driving member 4 is a hydraulic cylinder. The hydraulic cylinder includes a cylinder block and a push rod. The push rod is the aforementioned output shaft. The cylinder block is fixed to the upper end face of the well car body 1, and the push rod passes through the well car body 1 and abuts against the bolster member 3. Of course, the specific form of the driving member 4 is not limited, and it can also be an air cylinder, an electric cylinder, etc.

[0046] Please refer to Figures 5 - 6, Figure 5 is Figure 1 a schematic structural view of the center plate component of the concave-bottom flat car structure;

[0047] Figure 6 is Figure 5 a schematic structural view of the center plate component from another angle.

[0048] In the present invention, the center plate component 3 includes a center plate beam 31, and the center plate beam 31 is provided with two longitudinally communicating mounting slots 31a, and the locking components 5 pass through the mounting slots 31a one by one.

[0049] Of course, in practical applications, the number of the locking components 5 is not limited, as long as it can bear the vertical load and ensure the load-bearing stability. The number of the mounting slots 31a is also not limited and can be the same as the number of the locking components 5. In this embodiment, the cross-section of the mounting slot 31a is a square matching the locking component 5.

[0050] In order to facilitate the extraction of the locking component 5 from the mounting slot 31a, a force-bearing seat can be provided at one end of the locking component 5, and a connection hole can be provided on the force-bearing seat for a rope to pass through, and the locking component 5 can be extracted by manual force; or the force-bearing seat can also be fixed to a cylinder, a hydraulic cylinder, an electric cylinder, etc., and the locking component 5 can be extracted by the cylinder, the hydraulic cylinder, the electric cylinder, which is time-saving and labor-saving.

[0051] Please continue to refer to Figures 5 - 6 , the center plate component 3 further includes a center plate 32 connected to the lower end of the center plate beam 31. The running part 2 includes a small underframe 21, and the small underframe 21 has a receiving groove, and the center plate 32 is located inside the receiving groove. Among them, the center plate 32 is a hemispherical structure. Therefore, the receiving groove is also a hemispherical structure matching the center plate 32.

[0052] Such as Figure 6 shown, in the present invention, a limiting wall 33 is further provided at a position where the center plate component 3 is close to the running part 2. The limiting wall 33 is specifically located at the connection between the center plate beam 31 and the center plate 32. When both ends of the concave-bottom frame 1 descend to abut against the limiting wall 33, the middle recess of the concave-bottom frame 1 supports on the ground.

[0053] In this way, in the empty car state, the concave-bottom frame 1 can be lowered to support on the ground. After the concave-bottom frame 1 is stable, goods can be loaded. After loading, the concave-bottom frame 1 together with the goods can be lifted through the lifting function to reach the vehicle running state; when unloading the goods, the reverse operation can be performed, the concave-bottom frame 1 together with the goods can be lowered, and after the concave-bottom frame 1 is stable, the goods can be unloaded, improving the convenience and safety of loading and unloading goods.

[0054] Of course, the specific position of the limiting wall 33 is related to the specific structure of the concave bottom frame 1. The distance between the limiting wall 33 and the locking member 5 should be equal to the distance between the middle concave portion of the concave bottom frame 1 and the ground in the running state.

[0055] Please refer to Figure 1 , Figures 7 - 8 , Figure 7 For Figure 1 structural schematic diagram of the equipment connecting device in the structure of the well - bottom flat car; Figure 8 For Figure 7 structural schematic diagram of the equipment connecting device from another angle.

[0056] The well - bottom flat car structure of the present invention further includes an equipment connecting device 6. The equipment connecting device is installed on the upper bearing surface of the concave bottom frame 1 and is used for installing equipment such as hoisting equipment for loading and unloading goods, saving the cost of hiring hoisting equipment when loading and unloading goods; and the equipment connecting device 6 can move longitudinally relative to the concave bottom frame 1 to meet the needs of loading and unloading goods at different positions.

[0057] Specifically, the equipment connecting device 6 includes a slide rail 61 and a connecting seat 62. The slide rail 61 is fixed on the upper bearing surface of the concave bottom frame 1 and extends longitudinally. Among the slide rail 61 and the connecting seat 62, one is provided with a guiding projection and the other is provided with a guiding groove. The connecting seat 62 is supported on the slide rail 61, and the guiding projection is installed inside the guiding groove, and the guiding projection can move inside the guiding groove.

[0058] In this embodiment, the slide rail 61 is provided with a guiding projection, and the connecting seat 62 is provided with a guiding groove. In practical applications, the guiding projection can also be provided on the connecting seat 62, and the guiding groove can also be provided on the slide rail 61. The guiding projection and the guiding groove can be T - shaped, square, etc.

[0059] From Figure 8 it can be seen that in this embodiment, the number of the slide rails 61 is two, which improves the support stability of the connecting seat 62. In practical applications, the number of the slide rails 61 is not limited, for example, it can be at least one; in this embodiment, the number of the connecting seats 62 is also two. In practical applications, the number of the connecting seats 62 is not limited, for example, it can be at least one.

[0060] From Figure 1 it can be seen that the equipment connecting device 6 can be installed only at both ends of the concave bottom frame 1, or only at the middle concave portion of the concave bottom frame 1, or at both ends and the middle concave portion of the concave bottom frame 1 simultaneously to meet the needs of loading and unloading goods at different positions.

[0061] The above has introduced in detail a structure of a depressed center flat car provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A structure of a flat car with a concave bottom, characterized in that, It includes a concave underframe (1) and two running gears (2). Hollow structures (1a) are provided at both ends of the concave underframe (1), and the lower ends of the hollow structures (1a) are open. It further includes two lifting devices. Each lifting device includes a bolster component (3) and a driving component (4). The lower end of the bolster component (3) is supported on the corresponding running gear (2), the upper end of the bolster component (3) is longitudinally limited and inserted into the corresponding hollow structure (1a) internally, the driving component (4) is fixed to the upper end wall of the concave underframe (1), the driving component (4) has an output shaft, and the output shaft can pass through the concave underframe (1) to abut against the bolster component (3).

2. The structure of the flat car with a concave bottom according to claim 1, characterized in that, Each lifting device further includes at least one locking component (5). The locking component (5) can be inserted into the bolster component (3), and both ends of the locking component (5) can penetrate out of the bolster component (3) to abut against the lower end face of the concave underframe (1) when the concave underframe (1) is lifted to the running state; the locking component (5) can also be detached from the bolster component (3).

3. The structure of the flat car with a concave bottom according to claim 2, characterized in that, The bolster component (3) includes a bolster beam (31). The bolster beam (31) is provided with at least one longitudinally communicating mounting slot hole (31a), and the locking components (5) pass through the mounting slot holes (31a) one by one correspondingly.

4. The structure of the flat car with a concave bottom according to claim 3, characterized in that, The bolster component (3) further includes a bolster (32) connected to the lower end of the bolster beam (31). The running gear (2) includes a small underframe (21), and the small underframe (21) has a receiving groove, and the bolster (32) is located inside the receiving groove.

5. The structure of the flat car with a concave bottom according to any one of claims 1-4, characterized in that, A limiting wall (33) is further provided at a position where the bolster component (3) is close to the running gear (2). When both ends of the concave underframe (1) descend to abut against the limiting wall (33), the middle concave part of the concave underframe (1) is supported on the ground.

6. The structure of the flat car with a concave bottom according to any one of claims 1-4, characterized in that, The hollow structure (1a) is a shell-like structure with only the lower end open. The hollow structure (1a) is formed by enclosing a closed upper wall (10) at the upper end, closed longitudinal walls at both longitudinal ends, and webs at both transverse ends. The upper side wall of the closed upper wall (10) is fixedly connected to the webs in the middle, and the closed upper wall (10) has a through hole for the output shaft to pass through.

7. The structure of the flat car with a concave bottom according to any one of claims 1-4, characterized in that, It further includes a device connection device (6). The device connection device is installed on the upper bearing surface of the concave underframe (1), and the device connection device (6) can move longitudinally relative to the concave underframe (1).

8. The structure of the flat car with a concave bottom according to claim 7, characterized in that, The device connection device (6) includes a slide rail (61) and a connection seat (62). The slide rail (61) is fixed to the upper bearing surface of the concave underframe (1) and extends longitudinally. Among the slide rail (61) and the connection seat (62), one is provided with a guiding protrusion, and the other is provided with a guiding groove. The connection seat (62) is supported on the slide rail (61), and the guiding protrusion is installed inside the guiding groove.

9. The structure of the flat car with a concave bottom according to claim 7, characterized in that, The device connection device (6) is installed at both ends of the concave underframe (1) and / or the middle concave part of the concave underframe (1).

10. The structure of the flat car with a concave bottom according to any one of claims 1-4, characterized in that, The driving component (4) is a hydraulic cylinder, which includes a cylinder block and a push rod. The push rod is the output shaft. The cylinder block is fixed to the upper end surface of the concave bottom frame (1), and the push rod passes through the concave bottom frame (1) and abuts against the center plate component (3).

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