Railway ballast cleaning device

Abstract

A railway ballast cleaning device comprises an installation support of a strip-shaped structure, a driving chain wheel and a driven chain wheel are assembled at the two ends of the installation support, a cutter installation frame is arranged on the periphery of the installation support in a crawler-type surrounding mode, the driving chain wheel is driven by a driving shaft to rotate, and the driving shaft is connected with an external transmission shaft frame through a connecting frame. The cutter installation frame comprises a chain composed of an outer chain plate and an inner chain plate, a plurality of cutter installation bases are arranged on the cutter installation frame at intervals, a cutter head is installed on each cutter installation base through a cutter head ring, and the outer chain plate and the inner chain plate are connected with the driving chain wheel and the driven chain wheel respectively. According to the utility model, a plurality of sets of cutter mounting racks can be arranged, and a plurality of chains can be driven by adopting a specific duplex structure chain wheel, so that the effective ballast cleaning area is increased, and the ballast cleaning efficiency is improved. The ballast cleaning device is simple in structural design, has a wider cleaning range and a more convenient ballast cleaning tool maintenance function, and can improve the overall cleaning efficiency and prolong the service life of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of railway maintenance, and particularly relates to a railway ballast cleaning device. Background Art

[0002] In the railway track system, the ballast cleaning chain plays an important role in removing the ballast (also known as cushion ballast or subgrade gravel) under the railway track. The design and application of the ballast cleaning chain aim to solve problems such as ballast compaction and poor drainage, thereby ensuring the safety and smoothness of railway operation. Traditional ballast cleaning work usually requires a large amount of manpower and time, while the introduction of the ballast cleaning chain technology can improve the cleaning efficiency and quality. The ballast cleaning chain equipment generally includes components such as a strip-shaped bracket, a driving sprocket, a driven sprocket, a transmission chain, and ballast cleaning cutters arranged along the running direction of the chain. These components work together, driving the movement of the ballast cleaning cutters through the sprockets, and pushing the ballast to the proximal end of the bracket, thereby achieving effective ballast cleaning.

[0003] However, the above-mentioned ballast cleaning chain in the prior art has the following defects:

[0004] The chain components of the ballast cleaning chain often suffer axial impacts during the movement process. These impacts not only accelerate the wear of the chain, sprocket, and ballast cleaning head, shortening their service life, but also affect the power system. Affected by the structure of the ballast cleaning chain for receiving the chain, the ballast cleaning cutters are attached to the top plate of the outer link plate. The single-row chain limits the installation area, resulting in a relatively small existing ballast cleaning operation area. And in the existing ballast cleaning chain, the ballast cleaning cutters are welded to the ballast cleaning chain. After long-term use, the cutters will show uneven wear, and it is difficult to replace and maintain the ballast cleaning cutters. At the same time, due to the often dense arrangement of the ballast cleaning cutters, the ballast often gets stuck in the ballast cleaning cutters. The residual ballast not only affects the continuity of the ballast cleaning construction, but also often requires manual timely combing, greatly reducing the ballast cleaning rate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a railway ballast cleaning device aiming at the above problems in the prior art, which has a wider cleaning range and a more convenient maintenance function for the ballast cleaning cutters, and can improve the overall cleaning efficiency and the service life of the device.

[0006] In order to achieve the above purpose, the utility model has the following technical solutions:

[0007] A railway ballast cleaning device includes an installation bracket with a strip-shaped structure. Active sprockets and driven sprockets are assembled at both ends of the installation bracket. A cutter mounting frame is arranged around the outer periphery of the installation bracket in a caterpillar track manner. The active sprocket is driven to rotate by a drive shaft, and the drive shaft is connected to an external drive shaft bracket through a connecting frame. The cutter mounting frame includes a chain composed of outer chain plates and inner chain plates. A number of cutter mounting seats are arranged at intervals on the cutter mounting frame. Each cutter mounting seat is provided with a cutter head through a cutter head ring, and the outer chain plate and the inner chain plate are respectively connected to the active sprocket and the driven sprocket.

[0008] As a preferred solution, guard plates for preventing ballast from entering the working areas of the active sprocket and the driven sprocket are installed on the upper and lower sides of the installation bracket.

[0009] As a preferred solution, an installation end cover for connecting and fixing other components is arranged on the installation bracket on the opposite side of the active sprocket.

[0010] As a preferred solution, a roller bearing is arranged on the installation end cover, and a drive shaft sleeve is arranged at the position of the installation bracket where the active sprocket is assembled. The active sprocket is assembled on the drive shaft sleeve through the roller bearing and can rotate under the drive of the drive shaft.

[0011] As a preferred solution, the cutter mounting seat, the cutter head ring and the cutter head are all detachably assembled.

[0012] As a preferred solution, after the cutter mounting seat, the cutter head ring and the cutter head are assembled in place, there is an included angle with the cutter mounting frame, and the inclination direction is the same as the rotation direction of the cutter mounting frame.

[0013] As a preferred solution, the tip and the body of the cutter head are welded and strengthened. After the cutter head is assembled with the cutter head ring, it forms a conical surface transition in the shape of a bullet head.

[0014] As a preferred solution, both the outer chain plate and the inner chain plate are composed of several sections of chains spliced together, and the contact surfaces of adjacent two sections of chains are processed into arc surfaces.

[0015] As a preferred solution, two sets of cutter mounting frames are provided and are correspondingly assembled on a pair of compound structure chains composed of two single-row chains. Both of the two single-row chains are driven to rotate by the active sprocket and the driven sprocket, and the cutter mounting seats on the two sets of cutter mounting frames are arranged in a staggered manner.

[0016] As a preferred solution, the drive shaft inside the drive shaft bracket is connected to a drive mechanism through a shaft bracket, and the drive mechanism adopts a hydraulic motor.

[0017] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0018] The external drive shaft frame drives the drive shaft to rotate through the connecting frame. The drive shaft then drives the driving sprocket to rotate. Further, the driving sprocket and the driven sprocket drive the outer link plates and inner link plates of the chain to rotate. A number of tool mounting seats arranged at intervals on the tool mounting frame rotate accordingly, extending into the bottom of the railway track to remove the ballast under the track. Since in the present utility model, the cutter head is mounted on each tool mounting seat through a cutter head ring, the original integral tool is divided into a ballast cleaning tool and a tool mounting seat. The maintenance of the ballast cleaning chain is completed by replacing the most severely worn tool. At the same time, the lateral force generated by a specific cutter side inclination angle enables the tool to rotate within the tool mounting seat, so as to reduce the phenomenon of uneven wear of the tool. In addition, multiple sets of tool mounting frames of the present utility model can be provided, and a specific compound structure sprocket can drive multiple chains, increasing the effective ballast cleaning area and improving the ballast cleaning efficiency. Moreover, by adjusting the arrangement form of the tool mounting seats on different chain tool mounting frames, the ballast breaking operation can be carried out efficiently, and the ballast can be prevented from jamming among the dense ballast cleaning tools. The structure of the present utility model is simply designed, has a wider cleaning range and a more convenient ballast cleaning tool maintenance function, and can improve the overall cleaning efficiency and the service life of the device.

[0019] Further, protective plates for preventing ballast from entering the working areas of the driving sprocket and the driven sprocket are mounted on the upper and lower sides of the mounting bracket of the present utility model, effectively protecting related components such as the chain and the sprocket from impact damage.

[0020] Further, both the outer link plate and the inner link plate of the present utility model are composed of a number of chain sections spliced together. The contact surfaces of adjacent two chain sections are processed into arc surfaces, avoiding the ballast being bitten by the connecting units of the chain, and preventing the chain from breaking and the teeth of the sprocket from cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of the railway ballast cleaning device according to the embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of the drive shaft sleeve and the ballast cleaning tool assembly of the railway ballast cleaning device according to the embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the compound structure chain of the railway ballast cleaning device according to the embodiment of the present utility model;

[0024] Figure 4 Schematic diagram of the contact surface of adjacent two chain sections being an arc surface according to the embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of the cutter head being mounted on the tool mounting seat through a cutter head ring according to the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following further describes the present utility model in detail with reference to the drawings.

[0027] The ballast cleaning chain, often also referred to as the railway switch ballast cleaning chain or the hydraulic ballast cleaner, is an attachment for excavators used in railway construction, mainly for cleaning the ballast under the railway rails. In the existing ballast cleaning chain, there is a phenomenon of uneven wear of the ballast cleaning tool during the working process, with a limited service life, and it is relatively difficult to replace and maintain the ballast cleaning tool. At the same time, the ballast cleaning operation area is also small, and it is easy for the ballast stones to be embedded in the ballast cleaning tool, requiring frequent manual cleaning, resulting in a significant reduction in the ballast cleaning efficiency.

[0028] Please refer to Figures 1 to 5 , for the railway ballast cleaning device of the embodiment of the present utility model, it includes an installation bracket 3 with a strip-shaped structure. At both ends of the installation bracket 3, a driving sprocket 6 and a driven sprocket 11 are assembled. A tool mounting bracket 7 is arranged around the outer circumference of the installation bracket 3 in a crawler manner. The driving sprocket 6 is driven to rotate by a driving shaft 601. The driving shaft 601 is connected to an external transmission shaft bracket 13 through a connecting frame 12. The transmission shaft inside the transmission shaft bracket 13 is connected to a driving mechanism through a shaft bracket, and the driving mechanism adopts a hydraulic motor. An installation end cover 1 for connecting and fixing other components is arranged on the installation bracket 3 on the opposite side of the driving sprocket 6. A roller bearing 602 is arranged on the installation end cover 1. A driving shaft sleeve 301 is arranged at the position where the installation bracket 3 assembles the driving sprocket 6. The driving sprocket 6 is assembled on the driving shaft sleeve 301 through the roller bearing 602 and can rotate under the drive of the driving shaft 601.

[0029] The tool mounting bracket 7 includes a chain composed of outer chain plates and inner chain plates. A plurality of tool mounting seats 8 are arranged at intervals on the tool mounting bracket 7. A cutter head 10 is installed on each tool mounting seat 8 through a cutter head ring 9. The tool mounting seats 8, the cutter head rings 9, and the cutter heads 10 are all detachably assembled. After the tool mounting seats 8, the cutter head rings 9, and the cutter heads 10 are assembled in place, there is an included angle with the tool mounting bracket 7, and the inclination direction is the same as the rotation direction of the tool mounting bracket 7. In this embodiment, two sets of tool mounting brackets 7 are provided, which are correspondingly assembled on a pair of compound structure chains composed of two single-row chains. Both single-row chains are driven to rotate by the driving sprocket 6 and the driven sprocket 11, and the tool mounting seats 8 on the two sets of tool mounting brackets 7 are arranged in a staggered manner.

[0030] The outer chain plates and the inner chain plates are respectively connected to the driving sprocket 6 and the driven sprocket 11. The outer chain plates and the inner chain plates are both composed of a plurality of chain links 401 spliced together. The contact surfaces of adjacent two chain links 401 are processed into arc surfaces 402. Guard plates 101 for preventing ballast stones from entering the working areas of the driving sprocket 6 and the driven sprocket 11 are installed on the upper and lower sides of the installation bracket 3. The tip and the body of the cutter head 10 are welded and strengthened. After the cutter head 10 is assembled with the cutter head ring 9, it forms a conical transition in the shape of a bullet head.

[0031] The utility model increases the operation flexibility of the ballast cleaning chain and enables the ballast cleaning chain to adapt to complex working environments. The setting of the mounting bracket enables the ballast cleaning machine to work stably. The crawler-type ballast cleaning machine body of the utility model comprises a pair of compound structure sprockets welded by two single-row sprockets and two matching chains. The ballast cleaning machine body is arranged on the mounting bracket, and the mounting bracket is provided with guide rails, and the chains move along the guide rails, thereby ensuring the stability and accuracy of the ballast cleaning machine during operation.

[0032] The chain structure of the utility model selects roller chains. Considering the tool installation problem, the pin shafts are lengthened, and the plates with ballast cleaning tools are welded to the outer link plates of the roller chains to form a new integral outer link plate, and the ballast cleaning chains are formed for ballast cleaning operations.

[0033] The tool mounting seat 8, the cutter head ring 9 and the cutter head 10 of the utility model are all detachably assembled, which is convenient for replacing severely worn cutter heads. After the cutter head 10 and the cutter head ring 9 are assembled, they are in a bullet shape. To improve the high reliability of the structure, the cutter tip and the cutter body are welded and strengthened. Further, the ballast cleaning tools of the utility model are staggeredly distributed on the chains, and through specific arrangements, ballast breaking operations can be carried out efficiently, and the ballast can be raked out from the bottom of the roadbed.

[0034] The drive mechanism of the utility model drives the crawler-type ballast cleaning machine body at the bottom while the drive motor rotates through the meshing of gears. This design enables the operator to easily adjust the angle of the ballast cleaning machine for cleaning operations or overall removal and placement operations, making the operation more convenient and improving the use flexibility and efficiency of the ballast cleaning machine.

[0035] As Figure 2 shown, the mounting bracket 3 of the utility model is the main body structure of the whole device, with a stable design and convenient operation. The drive system is connected to the mounting bracket 3 and provides driving force through a hydraulic motor. The chains of the utility model move cyclically driven by the drive system, and the ballast cleaning tools 302 are evenly distributed along the chains for scraping and cleaning ballast.

[0036] As Figure 3 shown, in order to improve the operation efficiency, the drive system of the railway ballast cleaning device of the utility model adopts an optimized transmission design. Specifically, the transmission mechanism adopts high-efficiency gears and bearing components to ensure that the driving force can be transmitted to the chains smoothly and efficiently. This design not only reduces energy loss but also improves the working stability of the whole device. Considering the complexity of the railway ballast environment, the utility model has made a special design for the chains. Each link of the chains is equipped with a guard plate 101, and these components not only enhance the structural strength of the chains but also can effectively prevent ballast from entering the interior of the chains and causing damage.

[0037] In order to enhance durability and reduce the risk of damage, the utility model adopts an arc-shaped optimized design on the connection unit of the chain. This design not only improves the smooth movement of the chain but also effectively reduces the damage caused by friction and impact. Specifically, the chain system consists of closely connected outer connection units and inner connection units, among which the outer connection units are specially designed with guard plates and top plates. The ends of these guard plates adopt a multi-curved surface design, optimizing the gap between units and helping to reduce stress concentration at the chain connection, thereby reducing the possibility of fracture and wear. The ballast cleaning head is firmly installed on the top plate, and the inner convex part of the guard plate effectively shields the teeth of the driving and driven sprockets, preventing the intrusion of foreign objects such as gravel.

[0038] The above are only the preferred embodiments of the utility model and are not used to limit the technical solutions of the utility model. Those skilled in the art should understand that without departing from the spirit and principle of the utility model, several simple modifications and substitutions can be made to this technical solution, and these modifications and substitutions also fall within the protection scope covered by the claims of the utility model.

Claims

1. A railway ballast cleaning device, characterized in that, It includes a mounting bracket (3) in the shape of a bar structure. Driving sprockets (6) and driven sprockets (11) are assembled at both ends of the mounting bracket (3). A tool mounting bracket (7) is arranged around the outer circumference of the mounting bracket (3) in a crawler type. The driving sprocket (6) is driven to rotate through a driving shaft (601), and the driving shaft (601) is connected to an external transmission shaft bracket (13) through a connecting bracket (12). The tool mounting bracket (7) includes a chain composed of outer chain plates and inner chain plates. A number of tool mounting seats (8) are arranged at intervals on the tool mounting bracket (7). A tool bit (10) is mounted on each tool mounting seat (8) through a tool bit ring (9). The outer chain plates and the inner chain plates are respectively connected to the driving sprocket (6) and the driven sprocket (11).

2. The railway ballast cleaning device according to claim 1, characterized in that, Guard plates (101) for preventing ballast from entering the working areas of the driving sprocket (6) and the driven sprocket (11) are installed on the upper and lower sides of the mounting bracket (3).

3. The railway ballast cleaning device according to claim 1, characterized in that, An installation end cover (1) for connecting and fixing other components is arranged on the mounting bracket (3) on the side opposite to the driving sprocket (6).

4. The railway ballast cleaning device according to claim 3, characterized in that, A roller bearing (602) is arranged on the installation end cover (1), and a driving shaft sleeve (301) is arranged at the position of the mounting bracket (3) where the driving sprocket (6) is assembled. The driving sprocket (6) is assembled on the driving shaft sleeve (301) through the roller bearing (602) and can rotate driven by the driving shaft (601).

5. The railway ballast cleaning device according to claim 1, characterized in that, The tool mounting seats (8), the tool bit rings (9), and the tool bits (10) are all detachably assembled.

6. The railway ballast cleaning device according to claim 1, characterized in that After the tool mounting seats (8), the tool bit rings (9), and the tool bits (10) are assembled in place, there is an included angle with the tool mounting bracket (7), and the inclination direction is the same as the rotation direction of the tool mounting bracket (7).

7. The railway ballast cleaning device according to claim 1, wherein The tip and the body of the tool bit (10) are welded and strengthened. After the tool bit (10) is assembled with the tool bit ring (9), a conical surface transition in the shape of a bullet head is formed.

8. The railway ballast cleaning device according to claim 1, characterized in that, Both the outer chain plates and the inner chain plates are spliced by a number of chain links (401), and the contact surfaces of adjacent two chain links (401) are processed into arc surfaces (402).

9. The railway ballast cleaning device according to claim 1, characterized in that, Two sets of the tool mounting brackets (7) are provided and are correspondingly assembled on a pair of compound structure chains composed of two single-row chains. Both of the two single-row chains are driven to rotate by the driving sprocket (6) and the driven sprocket (11), and the tool mounting seats (8) on the two sets of tool mounting brackets (7) are arranged in a staggered manner.

10. The railway ballast cleaning device according to claim 1, characterized in that, The transmission shaft inside the transmission shaft bracket (13) is connected to a driving mechanism through a shaft bracket, and the driving mechanism adopts a hydraulic motor.

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