Railway track ballast screener

Abstract

The utility model discloses a railway track ballast screening machine belongs to railway equipment technical field, including walking wheel, walking wheel is used for walking on the rail, and walking wheel top is provided with the floor beam, and the floor beam is provided with rear stand, front stand and motor, and motor provides power for the rotating shaft subassembly, and the rear stand and front stand top are provided with spring, and the spring top is provided with the work screen subassembly, and the rotating shaft subassembly drives the work screen subassembly vibration, and the work screen subassembly front is provided with first separating plate, second separating plate and conveyer belt subassembly, and conveyer belt subassembly is driven through conveyer belt motor. The utility model discloses a railway track ballast screening machine above, and the conveyer belt subassembly of rotatory and detachable design saves space and is convenient for transportation, and the work screen subassembly is driven by the rotating shaft subassembly of motor and is driven vibration, and cooperates the structure of rear to front downward inclination, can efficiently screen the sundries in the ballast.

Description

Technical Field

[0001] This utility model relates to the field of railway equipment technology, and in particular to a railway track ballast screening machine. Background Technology

[0002] Ballast screening, cleaning, and backfilling are crucial aspects of railway track maintenance, significantly impacting track structure stability and train operation safety. The ballast bed formed by accumulated ballast needs to distribute train loads evenly through supporting sleepers. If debris such as gravel and dust is mixed in, it reduces the porosity and load-bearing capacity of the ballast bed, leading to sleeper settlement or track deformation. Furthermore, dust accumulation can cause ballast bed compaction and drainage failure. Screening and cleaning restore the permeability and elastic buffering function of the ballast bed, extending its service life, reducing maintenance costs, and minimizing environmental pollution—essential measures for ensuring safe and efficient railway operation. However, existing railway track ballast screening machines suffer from the following technical problems: Traditional screening equipment often uses static screening or simple vibration structures, which are ineffective at separating gravel, dust, cigarette butts, and other debris mixed in the ballast. Ballast clogging of the screen is also common during screening, resulting in low operational efficiency. Moreover, the screening, conveying, and debris collection processes of existing equipment often require manual intervention, increasing labor intensity and potentially affecting operational safety. Traditional ballast screening machines often have fixed components such as conveyor belts, which take up a lot of space when the equipment is not in use and require disassembly and assembly during transportation, which is time-consuming and labor-intensive. Summary of the Invention

[0003] The purpose of this utility model is to provide a railway track ballast screening machine that can automatically separate and transport ballast and debris, improve screening efficiency and operational safety, and facilitate transportation and storage through a folding design, thereby reducing space volume.

[0004] To achieve the above objectives, this utility model provides a railway track ballast screening machine, including a traveling wheel for traveling on the railway track. A bottom beam is provided above the traveling wheel, and a rear column, a front column, and a motor are provided on the bottom beam. The motor provides power to the rotating shaft assembly. Springs are provided at the top of the rear column and the front column, and a working screen assembly is provided above the springs. The rotating shaft assembly drives the working screen assembly to vibrate. A first separation plate, a second separation plate, and a conveyor belt assembly are provided in front of the working screen assembly, and the conveyor belt assembly is driven by a conveyor belt motor.

[0005] Preferably, safety barriers are provided on both sides and behind the rear and front columns, and the height of the rear column exceeds that of the front column.

[0006] Preferably, the working screen assembly is inclined downward from back to front. The working screen assembly includes a screen box support frame disposed at the top of the spring, a screen box is installed above the screen box support frame, a support beam is disposed above the screen box, a gap is left between the support beam and the screen box, a screen surface is disposed above the support beam, and screen surface railings are disposed on the left, right and rear sides of the screen surface.

[0007] Preferably, the rotating shaft assembly includes a rotating shaft connected to the motor via a pulley, and cams are installed at both ends of the rotating shaft.

[0008] Preferably, the conveyor belt assembly includes an upper conveyor belt, a lower conveyor belt, and a rotating support platform. When the lower conveyor belt is folded, it is located directly below the upper conveyor belt. When the lower conveyor belt is in operation, it is rotated 180° by the rotating support platform and then unfolded.

[0009] Preferably, the first separation plate and the second separation plate have different lengths, and the first separation plate and the second separation plate are used to adjust the falling position of the ballast.

[0010] Therefore, this utility model adopts the above-mentioned railway track ballast screening machine, in which the rear column is higher than the front column and the top of the working screen assembly is supported by springs. The working screen assembly is driven by a rotating shaft assembly driven by an electric motor to vibrate. With the structure tilting downwards from back to front, it can efficiently screen debris in the ballast. The screen surface of the working screen assembly is equipped with a fence to prevent the ballast from falling. After the debris falls into the screen box through the gaps, it automatically slides onto the conveyor belt and is then conveyed to a designated location for unified recycling or other treatment. The ballast falls to the designated location through the first and second separation plates at the front. The conveyor belt assembly is driven by a motor, and the lower conveyor belt can be rotated and unfolded by a rotating support platform, saving space and facilitating transportation. The overall structure realizes the automatic separation and transportation of ballast and debris, improving screening efficiency and operational safety. The folding design also facilitates transportation and storage.

[0011] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a railway track ballast screening machine according to this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the screen box in an embodiment of a railway track ballast screening machine of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of an embodiment of a railway track ballast screening machine according to the present invention.

[0015] Figure Labels

[0016] 1. Sleeper; 2. Rail; 3. Wheels; 4. Safety enclosure; 5. Screen surface; 6. Conveyor belt motor; 7. First separation plate; 8. Second separation plate; 9. Conveyor belt assembly; 9A. Upper conveyor belt; 9B. Lower conveyor belt; 9C. Rotating support platform; 10. Screen surface enclosure; 11. Screen box; 12. Support beam; 13. Rotating shaft; 14. Pulley; 15. Cam; 16. Spring; 17. Screen box support frame; 18. Motor; 19. Rear column; 20. Front column; 21. Bottom beam. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Example 1

[0020] This utility model provides a railway track ballast screening machine, the structure of which is as follows: Figure 1-3As shown, the system includes traveling wheels 3 for moving on rails 2, which are laid on top of sleepers 1. A bottom beam 21 is mounted above the traveling wheels 3, and a rear column 19, a front column 20, and a motor 18 are mounted on the bottom beam 21. Safety panels 4 are installed on both sides and behind the rear column 19 and the front column 20. The rear column 19 is taller than the front column 20. Springs 16 are mounted at the top of the rear column 19 and the front column 20, and a working screen assembly is mounted above the springs 16. The working screen assembly is inclined downwards from back to front, changing in height from the rear column 19 to the front column 20. The working screen assembly includes a screen box support frame 17 mounted at the top of the springs 16. The screen box support frame 17 has a frame structure, and a screen box 11 is mounted above the screen box support frame 17. A support beam 12 is mounted above the screen box 11, and a gap is left between the support beam 12 and the screen box 11 for filtering out debris. A screen surface 5 is installed above the support beam 12. The screen surface 5 is used to screen and separate normal ballast stones from cigarette butts, debris, gravel, etc. Screen surface guardrails 10 are installed on the left, right and rear sides of the screen surface 5 to prevent ballast and other materials from falling into the machine and causing damage.

[0021] The electric motor 18 provides power to the rotating shaft assembly, which drives the working screen assembly to vibrate. The rotating shaft assembly includes a rotating shaft 13, which is connected to the electric motor 18 via a pulley 14. Cams 15 are installed at both ends of the rotating shaft 13. Since the center of gravity of the cam 15 does not coincide with the axis of the rotating shaft 13, the rotation of the cam 15 will cause the screen surface 5 to vibrate.

[0022] A first separating plate 7, a second separating plate 8, and a conveyor belt assembly 9 are arranged in front of the working screen assembly. The conveyor belt assembly 9 is driven by a conveyor belt motor 6. The conveyor belt assembly 9 includes an upper conveyor belt 9A, a lower conveyor belt 9B, and a rotating support platform 9C. When folded, the lower conveyor belt 9B is located directly below the upper conveyor belt 9A. When in operation, the lower conveyor belt 9B is rotated 180° by the rotating support platform 9C and then unfolded. This folding design helps save space and facilitates equipment transport; it unfolds during operation and folds up when the operation is finished. The first separating plate 7 and the second separating plate 8 have different lengths and can rotate, facilitating adjustment of the ballast's drop position.

[0023] When the railway track ballast screening machine described in this embodiment is in operation, the lower conveyor belt 9B is rotated 180° via the rotating support platform 9C and then unfolded. A railway-specific excavator is connected to the ballast screening machine and pulls the machine along the railway track 2. The motor 18 is started, and the motor 18 transmits power to the rotating shaft 13 through the pulley 14, which in turn causes the cam 15 to rotate. Since the center of gravity of the cam 15 does not coincide with the axis of the rotating shaft 13, the rotation of the cam 15 will cause the entire working screen assembly to vibrate. The excavator places ballast mixed with debris onto screen surface 5. Normal ballast stones are located on the upper surface of screen surface 5, while debris such as gravel, cigarette butts, and dust are screened into screen box 11. Due to the inclined design of the working screen assembly, the ballast stones and debris slide down the slope under the combined effects of gravity and vibration. The upper layer of ballast stones, guided by the first separation plate 7 and the second separation plate 8, returns to the sleeper 1. The gravel, cigarette butts, dust, and other debris slide down screen box 11 to the upper conveyor belt 9A and then into the lower conveyor belt 9B, where they are transported to the waste collection device. At the end of the work, the lower conveyor belt 9B is folded so that it is in an upper-lower relationship with the upper conveyor belt 9A.

[0024] Therefore, this utility model adopts the above-mentioned railway track ballast screening machine, in which the rear column is higher than the front column and the top of the working screen assembly is supported by springs. The working screen assembly is driven by a rotating shaft assembly driven by an electric motor to vibrate. With the structure tilting downwards from back to front, it can efficiently screen debris in the ballast. The screen surface of the working screen assembly is equipped with a fence to prevent the ballast from falling. After the debris falls into the screen box through the gaps, it automatically slides onto the conveyor belt and is then conveyed to a designated location for unified recycling or other treatment. The ballast falls to the designated location through the first and second separation plates at the front. The conveyor belt assembly is driven by a motor, and the lower conveyor belt can be rotated and unfolded by a rotating support platform, saving space and facilitating transportation. The overall structure realizes the automatic separation and transportation of ballast and debris, improving screening efficiency and operational safety. The folding design also facilitates transportation and storage.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A railway track ballast screener characterised in that: The system includes traveling wheels for moving on rails. A base beam is mounted above the traveling wheels, and a rear column, a front column, and a motor are mounted on the base beam. The motor provides power to the rotating shaft assembly. Springs are mounted at the top of the rear and front columns, and a working screen assembly is mounted above the springs. The rotating shaft assembly drives the working screen assembly to vibrate. A first separation plate, a second separation plate, and a conveyor belt assembly are mounted in front of the working screen assembly, and the conveyor belt assembly is driven by a conveyor belt motor.

2. A railway track ballast screener as claimed in claim 1, wherein: Safety barriers are provided on both sides and behind the rear and front columns, and the height of the rear column exceeds that of the front column.

3. A railway track ballast screener as claimed in claim 1, wherein: The working screen assembly is inclined downward from back to front. The working screen assembly includes a screen box support frame disposed on the top of the spring. A screen box is installed on the screen box support frame. A support beam is disposed on the screen box. A gap is left between the support beam and the screen box. A screen surface is disposed on the support beam. Screen surface railings are disposed on the left, right and rear sides of the screen surface.

4. A railway track ballast screener as claimed in claim 1, wherein: The rotating shaft assembly includes a rotating shaft connected to the motor via a pulley, and cams are installed at both ends of the rotating shaft.

5. A railway track ballast screener as claimed in claim 1, wherein: The conveyor belt assembly includes an upper conveyor belt, a lower conveyor belt, and a rotating support platform. When the lower conveyor belt is folded, it is located directly below the upper conveyor belt. When the lower conveyor belt is in operation, it is rotated 180° by the rotating support platform and then unfolded.

6. A railway track ballast screener as claimed in claim 1, wherein: The first and second separation plates have different lengths and are used to adjust the position where the ballast falls.

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