Device for tamping railway ballast

Abstract

The utility model provides a device for tamping railway ballasts, the device is connected with an excavator and is pushed by the excavator to carry out tamping operation, the device comprises a connecting mechanism, a rotary driving mechanism, a support connecting frame, an eccentric vibration mechanism and a vibration arm group, the connecting mechanism is used for connecting the device to the excavator; the rotary driving mechanism realizes multi-angle rotation of the device; the support connecting frame is used for mounting a support; the eccentric vibration mechanism is used for driving the vibration arm group to vibrate; the vibrating arm sets are arranged at the two ends of the eccentric vibrating mechanism, and when the vibrating device works, the vibrating arm sets are inserted into railway ballast to vibrate the railway ballast. According to the technical scheme, high-efficiency tamping operation can be achieved, meanwhile, good maneuverability is achieved, flexible dispatching can be achieved, the equipment cost is low, and the tamping machine can be widely applied to various working scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway maintenance technical field, concretely relates to a device for railway ballast tamping and a railway ballast maintenance system. BACKGROUND

[0002] With the increase of train running speed and vehicle axle load, in recent years, a large number of speed-up turnouts are laid on the line, after a period of train operation, due to different roadbed states, ballast compaction degrees and rail wear, the turnout will appear uneven subsidence, one side or both sides of the rail will be concave, forming small pits and triangular pits, leading to the overall unevenness of the turnout, affecting the stable operation of the train, and even causing accidents in serious cases. In order to keep the rail top surface of the turnout in a horizontal state, it is necessary to tamping. In addition, the ballast of the newly built line is still in a loose state after laying, and the tamping operation of the ballast must be carried out in time. The purpose of tamping is to make the ballast at the bottom of the sleeper more compact, have stronger bearing capacity and necessary elasticity and stability, ensure the turnout in a stable state under dynamic load, and make the train pass safely, stably and quickly.

[0003] Ballast tamping is the process of moving ballast to a specified direction and increasing the compaction degree of ballast. At present, the commonly used filling material of railway ballast bed is stone ballast with a particle size of 20-70mm, the cross section of the ballast bed is trapezoidal, and the normal thickness is 30-50cm. When mechanized tamping is carried out, a pair of high-frequency vibrating tamping picks are inserted into the ballast on both sides of the sleeper at the same time, the ballast is tamped at the specified depth position by using relative clamping action, and the ballast is made to flow, gather and recombine, which plays a role in stabilizing the position of the track after lifting the turnout, improving the cushioning capacity of the ballast bed, eliminating some line diseases (such as empty hanging plate, etc.) and the like. The effect of ballast tamping is related to the composition of the tamping mechanism, tamping frequency and amplitude, and unsuitable tamping operation will cause the ballast to be crushed, and too many tamping times are one of the reasons for the hardening of the ballast bed.

[0004] Foreign countries generally use large road maintenance machinery for daily maintenance of the line. Since foreign road maintenance machinery started early, it is advanced in technology, and the machinery quality is also relatively high, developing rapidly, and the products of road maintenance machinery are relatively complete, including tamping machinery, ballast bed processing machinery, suction car, rail collector, etc., the tamping precision and efficiency are very high. By comparison, domestic Shanghai, Jinan, Liuzhou, Shenyang and other railway bureaus have also introduced the manufacturing technology of tamping machines, but the effect of tamping operation of some large railway tamping machines manufactured is not ideal, and the equipment failure rate is high. Due to the neglect of daily maintenance and repair work of the line, the long comprehensive maintenance period of large road maintenance machinery, the single variety and small quantity of introduced large road maintenance machinery, etc., it brings great challenges to the railway maintenance task of our country.

[0005] In view of the above many shortcomings, small railway tamping machine emerges as the times require, its application is widespread, simple operation, low cost, plays well in railway line construction and maintenance. Generally speaking, the construction organization scheme of large tamping vehicle is marshalling operation, and the equipment is large and needs a large parking space. Since the tamping vehicle can only run on the railway, during construction, the dispatching and screening equipment parking site to the construction site interval railway operation diagram is required to ensure that it does not conflict with the existing operation train marshalling of the line. It is difficult to organize and dispatch, so the overall application rate is not high. In some small construction conditions, large tamping vehicles are not cost-effective, and large tamping vehicles are not suitable. Therefore, large tamping vehicles are only used for large-scale line repair construction. Small or portable tamping machines usually use internal combustion engines as power sources, and need to use other lifting equipment to lift them onto the track before construction. During the construction process, more than two people or multiple people are required to operate, and the tamping effect is poor, which requires multiple tamping, time-consuming and laborious, and low work efficiency.

[0006] Therefore, a technical solution is needed that can achieve efficient tamping operation while having good mobility to achieve flexible scheduling, and has low equipment cost and can be widely applied to various working scenarios. Practical new type content

[0007] The utility model aims at providing a device for railway ballast tamping and a railway ballast maintenance system, which can achieve efficient tamping operation while having good mobility to achieve flexible scheduling, has low equipment cost and can be widely applied to various working scenarios.

[0008] According to one aspect of the utility model, a device for railway ballast tamping is provided, which is connected to an excavator and tamped by the excavator, comprising a connecting mechanism, a rotary drive mechanism, a support connecting frame, an eccentric vibration mechanism and a vibration arm group, wherein,

[0009] The connecting mechanism is used to connect the device to the excavator;

[0010] The rotary drive mechanism is arranged between the connecting mechanism and the support connecting frame to realize multi-angle rotation of the device;

[0011] The support connecting frame is used to install the eccentric vibration mechanism and the vibration arm group;

[0012] The eccentric vibration mechanism is arranged at both ends of the support connecting frame respectively to drive the vibration arm group to vibrate;

[0013] The vibration arm group is arranged at both ends of the eccentric vibration mechanism, and when working, the vibration arm group is inserted into the railway ballast to vibrate the ballast.

[0014] According to some embodiments, the connecting mechanism comprises a first pin shaft group, which is connected to the excavator.

[0015] According to some embodiments, the rotating drive mechanism comprises a rotating motor, a housing, a support base plate, and a rotating support, the rotating motor is arranged on the housing and drives the rotating support to rotate through a gear transmission, and the rotating support is arranged on the support base plate.

[0016] According to some embodiments, the rotating drive mechanism further comprises a hydraulic rotary joint and a stopper, the hydraulic rotary joint is arranged at the rotating center of the rotating drive mechanism, and the stopper is arranged at the edge of the hydraulic rotary joint to prevent the upper part of the hydraulic rotary joint from rotating with the mounting surface.

[0017] According to some embodiments, the device further comprises a damping stack arranged between the rotating drive mechanism 2 and the support connecting frame to reduce the transmission of invalid vibrations.

[0018] According to some embodiments, the eccentric vibration mechanism comprises an eccentric shaft, a flywheel, a hydraulic motor, and first and second clamping oil cylinders, one end of the eccentric shaft is connected to the hydraulic motor, the other end is fixed in the support connecting frame by the flywheel, the first and second clamping oil cylinders are arranged on the two sides of the eccentric shaft respectively, the hydraulic motor drives the eccentric shaft to rotate and generate eccentric displacement, and the displacement of the eccentric shaft is transmitted to the vibration arm through the first and second clamping oil cylinders arranged on the two sides of the eccentric shaft, thereby causing the vibration arm to vibrate at a high frequency.

[0019] According to some embodiments, the vibration arm group comprises at least one pair of vibration arms, each vibration arm comprises two vertical plates, a connecting plate, a first vibration arm pin shaft, a second vibration arm pin shaft, a first rotation stopping sleeve, and a second rotation stopping sleeve, the two vertical plates are arranged at the two ends of the connecting plate, the first and second vibration arm pin shafts are arranged between the two vertical plates and are fixed by the first and second rotation stopping sleeves.

[0020] According to some embodiments, the vibration arm further comprises a seat block, a side plate, and a tamper, the side plate is arranged on the two sides of the connecting plate, the seat block is arranged on the inner side of the side plate, and the tamper is arranged at the bottom of the seat block.

[0021] According to some embodiments, the vibration arm further comprises a damping rubber plate, which is arranged below the connecting plate to prevent the vibration arm from damaging the rail during construction.

[0022] According to some embodiments, the connection between the support frame and the vibration arm can adopt a hinged structure, so that the vibration arm can be individually flipped upward.

[0023] According to the embodiment of the present application, the device is connected to the working arm of the excavator through the connecting mechanism, and is moved and operated by the excavator, so that the device can be quickly and flexibly implemented up and down and installed, and efficient operation of the device is realized. Through the rotary drive mechanism and the eccentric mechanism, the vibration arm group is driven to vibrate, so that the ballast tamping operation is realized, and good mobility is realized while realizing efficient tamping operation, flexible scheduling can be realized, the device cost is low, and the device can be widely applied to various working scenes.

[0024] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows.

[0026] Figure 1 A device for railway ballast tamping according to an example embodiment is shown.

[0027] Figure 2 A device for railway ballast tamping according to an example embodiment is shown.

[0028] Figure 3 A device for railway ballast tamping according to an example embodiment is shown.

[0029] Figure 4 A device for railway ballast tamping according to an example embodiment is shown.

[0030] Figure 5 A device for railway ballast tamping according to an example embodiment is shown.

[0031] Figure 6 A device for railway ballast tamping according to an example embodiment is shown.

[0032] Figure 7 A device for railway ballast tamping according to an example embodiment is shown.

[0033] Figure 8 A device for railway ballast tamping according to an example embodiment is shown.

[0034] Figure 9 A device for railway ballast tamping according to an example embodiment is shown. DETAILED DESCRIPTION

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0036] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0037] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0038] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0039] It should be understood that although the terms first, second, third, etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this utility model. As used herein, the term "and / or" includes all combinations of any one and more of the associated listed items.

[0040] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this utility model are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0041] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments, and the modules or processes in the drawings are not necessarily essential for implementing this utility model, and therefore cannot be used to limit the scope of protection of this utility model.

[0042] In recent years, with the increase in train speed and axle load, a large number of high-speed turnouts have been laid on the tracks. After a period of train operation, due to differences in roadbed condition, ballast compaction, and rail wear, the turnouts may experience uneven descent, causing one or both sides of the rail to sink, forming small pits and triangular pits. This results in an uneven overall turnout, affecting the smooth operation of trains and potentially causing accidents. To keep the top surface of the turnout rails consistently level, tamping is necessary. Furthermore, on newly constructed lines, the ballast is still loose after turnout installation, requiring timely tamping. The purpose of tamping is to make the ballast at the bottom of the sleepers more compact, providing stronger load-bearing capacity and the necessary elasticity and stability, ensuring the turnout remains stable under dynamic loads, allowing trains to pass safely, smoothly, and quickly.

[0043] Overseas, large-scale track maintenance machinery is widely used for routine track maintenance. Due to their earlier development and advanced technology, foreign track maintenance machinery is of higher quality, has developed rapidly, and offers a comprehensive range of products, including tamping machines, ballast preparation machines, ballast suction cars, and rail collection machines, all with high tamping precision and efficiency. In contrast, railway bureaus in China, such as Shanghai, Jinan, Liuzhou, and Shenyang, have also introduced tamping machine manufacturing technology. However, the tamping results of some of the large railway tamping machines produced have been less than ideal, with a high equipment failure rate. Neglect of routine track maintenance, the excessively long maintenance cycles of large track maintenance machinery, and the limited variety and quantity of imported large track maintenance machinery pose significant challenges to my country's railway maintenance tasks. To address these shortcomings, small railway tamping machines have emerged. They are widely used, easy to operate, and have lower costs, playing a significant role in railway line construction and maintenance. Generally, large tamping machines are operated in tandem, requiring large areas for storage due to their size.

[0044] Because tamping machines can only be transported on railways, the railway timetable between the tamping equipment storage area and the construction site must be carefully scheduled during construction to ensure no conflicts with existing train formations on the line. This scheduling is difficult, resulting in a low overall application rate. Large tamping machines are not cost-effective for some small-scale construction situations and are therefore only used for large-scale track maintenance. Small or portable tamping machines typically use internal combustion engines as their power source, requiring additional lifting equipment to transport them onto the track before construction. This process not only requires two or more people to operate, but also results in poor tamping quality, necessitating multiple tamping passes, which is time-consuming, labor-intensive, and inefficient.

[0045] Therefore, this utility model proposes a railway ballast tamping device and a railway ballast maintenance system, which can achieve efficient tamping operations while maintaining good mobility and flexible scheduling. Moreover, the equipment is low-cost and can be widely applied to various working scenarios. According to the embodiment, the device is connected to the working arm of the excavator via the connecting mechanism, and the excavator drives its movement and operation, enabling flexible and rapid loading and unloading of the equipment and installation, achieving efficient equipment transportation. Through the rotary drive mechanism and the eccentric mechanism, the vibrating arm assembly is driven to vibrate, thereby realizing the ballast tamping operation. This achieves efficient tamping operations while maintaining good mobility and flexible scheduling. Moreover, the equipment is low-cost and can be widely applied to various working scenarios.

[0046] Before describing the embodiments of this utility model, some terms or concepts involved in the embodiments of this utility model will be explained.

[0047] The ballast bed refers to the layer of ballast (stone slab) laid beneath the railway sleepers on the subgrade surface. Its main function is to support the sleepers, evenly transfer the immense pressure from above them to the subgrade surface, and fix the sleepers in place, preventing longitudinal or lateral movement. The design of the ballast bed significantly reduces subgrade deformation, mitigates the impact of locomotive and rolling stock wheels on the rails, and facilitates drainage. The materials used in the ballast bed primarily include crushed stone and natural graded pebbles.

[0048] Ballast: This is a type of coarse gravel or crushed stone used for paving road or railway subgrades, primarily composed of high-grade granite. Ballast plays a crucial role in railway transportation systems, serving as the crushed stone to support track sleepers and is a common track bed structure. Before laying the tracks, a layer of crushed stone is laid on the subgrade, compacted, and then the sleepers and tracks are laid on top. The use of ballast distributes the weight of the train and tracks across the subgrade, thereby reducing vibration and noise from passing trains and improving passenger comfort.

[0049] Railway sleepers: Structures placed under the rails, usually made of wood or specially reinforced concrete, used to fix the position of the rails and transmit the pressure of the train to the ballast and track bed. Railway sleepers, also known as sleepers, are a type of railway component. However, the materials used are not limited to wood, so the name "rail sleeper" is more accurate. Railway sleepers must support the rails, maintain their position, and transfer the enormous pressure from the rails to the track bed. They must possess a certain degree of flexibility and elasticity; too stiff or too soft is ineffective. When a train passes, they can deform appropriately to cushion the pressure, but they must return to their original shape as much as possible afterward.

[0050] Tracking window construction: This refers to the idle time reserved for railway maintenance and construction. Tracking window operation means that during the 24-hour uninterrupted railway timetable, no train running lines are laid or the number of train runs is reduced, which is the idle time reserved for railway maintenance and construction.

[0051] Entering and exiting the track: Entering the track refers to the process by which railway construction equipment enters the railway tracks from both sides of the railway and locks the track system so that it can travel along the railway. Exiting the track is the process by which construction equipment leaves the railway.

[0052] Rotary joints: Rotary joints are pipe connection devices where the connected pipes can rotate relative to each other. They are sealed rotary connectors that allow 360° rotation for conveying media. They can be used to convey various media such as gas, liquid, and oil. The function of a rotary joint is to provide a sealing connection for introducing liquid from one side of a pipeline into rotating or reciprocating equipment and then discharging it from there.

[0053] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention.

[0054] Figure 1 This diagram illustrates a connection of an apparatus for tamping railway ballast according to an example embodiment.

[0055] Figure 2 The diagram shows a structural diagram of an apparatus for tamping railway ballast according to an example embodiment.

[0056] See Figure 1 as well as Figure 2 The figure shows an apparatus for tamping railway ballast according to an example embodiment. The apparatus is connected to an excavator and driven by the excavator to perform tamping operations. It includes: a connecting mechanism 1, a rotary drive mechanism 2, a supporting connecting frame 3, an eccentric vibration mechanism 5, and a vibrating arm assembly 4. The connecting mechanism 1 connects the apparatus to the excavator; the rotary drive mechanism 2 is disposed between the connecting mechanism 1 and the supporting connecting frame 3 to provide power for the tamping operation; the supporting connecting frame 3 is used to mount and support the eccentric vibration mechanism 5 and the vibrating arm assembly 4; the eccentric vibration mechanism 5 is disposed at both ends of the supporting connecting frame 3 to drive the vibrating arm assembly 4 to vibrate; the vibrating arm assembly 4 is disposed at both ends of the eccentric vibration mechanism 5, and during operation, the vibrating arm assembly 4 is inserted into the railway ballast to vibrate and tamp the ballast.

[0057] According to some embodiments, the connecting mechanism 1 of this railway ballast tamping device is connected to an excavator, which provides power. The excavator's boom drives the device to press down, lift, and move back and forth, ensuring safety and stability during construction. The device is not limited by site conditions and can be parked in any permitted location without requiring a dedicated railway line. It can also be transported by road, enabling flexible and mobile transportation. Before construction begins, the equipment can be transported to the designated construction site in advance. Depending on the frequency of railway train operations, the length of railway construction windows varies. For shorter windows, the equipment can be transported to the designated area in advance for quick track access, saving time.

[0058] According to some embodiments, the rotary drive mechanism 2 is located between the connecting mechanism 1 and the support frame, enabling multi-angle rotation of the device and playing a crucial role in tamping operations. The supporting connecting frame 3 serves as the foundation platform for all other components, supporting important parts such as the eccentric vibration mechanism 5 and the vibrating arm assembly 4. The eccentric vibration mechanism 5 is distributed on both sides of the support frame, inducing vibration through its own motion pattern, thereby affecting the performance of the connected vibrating arm assembly 4. When actual tamping operations are required, the vibrating arm assembly 4 is inserted into the gravel layer beneath the track, utilizing the force from the eccentric vibration mechanism 5 for effective tamping. This design can improve the efficiency and quality of railway maintenance work while reducing labor costs and alleviating the labor intensity of workers.

[0059] Figure 3 A schematic diagram of the connection mechanism of an apparatus for tamping railway ballast is shown according to an example embodiment.

[0060] See Figure 3 The figure shows a connecting mechanism 1 for a device used for tamping railway ballast according to an exemplary embodiment. The connecting mechanism 1 includes: two upright plates 101, a first reinforcing rib 102, a second reinforcing rib 103, a base plate 104, two first sleeves 105, and four second sleeves 106. The two upright plates 101 are arranged opposite each other on both sides of the base plate 104. The first reinforcing rib 102 and the second reinforcing rib 103 are located between the two upright plates 101. The four second sleeves 106 are located at four holes on the inner side of the two upright plates 101, and the two first sleeves 105 are located on the outer side of one of the two upright plates 101. This design can save costs while ensuring connection strength.

[0061] Figure 4 A schematic diagram of a rotary drive mechanism for a device for tamping railway ballast is shown according to an example embodiment.

[0062] See Figure 4The figure shows a rotary drive mechanism 2 for a device for tamping railway ballast according to an example embodiment. The rotary drive mechanism 2 includes a rotary motor 201, a housing 202, a support base plate 203, and a rotary support 206. The rotary motor 201 is disposed on the housing 202 and drives the rotary support 206 to rotate through gear transmission. The rotary support 206 is disposed on the support base plate 203.

[0063] According to some embodiments, the rotary motor 201 serves as a driving force source, transmitting torque to the rotary support 206 via a gear transmission system, enabling it to rotate around its axis. The support base 203 provides a stable base, allowing the entire device to be fixed to a surface without displacement.

[0064] According to some embodiments, the rotary drive mechanism 2 further includes a hydraulic rotary joint 204 and a stop 205. The hydraulic rotary joint 204 is disposed at the rotation center of the rotary drive mechanism, and the stop 205 is disposed at the edge of the hydraulic rotary joint 204 to prevent the upper part of the hydraulic rotary joint 204 from rotating with the mounting surface.

[0065] According to some embodiments, the rotary drive mechanism 2 includes a rotary motor 201, a housing 202, a support base plate 203, a hydraulic rotary joint 204, a stop 205, and a rotary support 206. The rotary motor 201 is mounted on the housing 202 and drives the rotary support 206 to rotate via gear transmission. The rotary support 206 is bolted to the support base plate 203. The hydraulic rotary joint 204 is located at the rotation center of the rotary drive mechanism. The stop 205 prevents the upper part of the hydraulic rotary joint 204 from rotating with the mounting surface. The hydraulic rotary joint 204 is mounted on a sealing device at the rotation center, allowing a liquid medium (e.g., lubricating oil or coolant) to flow continuously during rotation. The stop 205 is designed to prevent components from rotating with the main surface, thereby maintaining the system's balance.

[0066] According to some embodiments, the device further includes a vibration damper stack disposed between the rotary drive mechanism 2 and the support connection frame 3, for reducing the transmission of ineffective vibrations. Elastic material blocks within the vibration damper stack absorb unwanted vibration energy, reducing noise and extending service life.

[0067] Figure 5 A schematic diagram of a support connection frame for a device for tamping railway ballast is shown according to an example embodiment.

[0068] See Figure 5The figure shows a support frame 3 for a device used for tamping railway ballast according to an exemplary embodiment. The support frame 3 is an integrally welded component, mainly comprising a support plate 301, side panels 302, sleeve I 303, a crossbeam 304, a web plate 305, sleeve II 306, and a seat plate 307. A hole is opened at the center of the support plate 301, and sleeve II 306 is welded thereto. The seat plate 307 is welded below sleeve II 306 to fix the hydraulic rotary joint 204. The crossbeam 304 is assembled and welded from steel plates. The support plate 301 is located above the center of the crossbeam. Side panels 302 are provided on both sides of the crossbeam 304, and the two side panels 302 are connected by two sleeves I 303 and the web plate 305. This structural design ensures sufficient support strength for each component of the device, achieving space and cost optimization while ensuring tamping effect, resulting in a smaller device size and easier manual installation and deployment.

[0069] Figure 6 A schematic diagram of an eccentric vibration mechanism for a device for tamping railway ballast is shown according to an example embodiment.

[0070] See Figure 6 The figure shows an eccentric vibration mechanism for a railway ballast tamping device according to an example embodiment. The eccentric vibration mechanism 5 includes an eccentric shaft 502, a flywheel 503, a hydraulic motor 501, a first clamping cylinder 506, and a second clamping cylinder 507. One end of the eccentric shaft 502 is connected to the hydraulic motor 501, and the other end is fixed in the support connecting frame 3 by the flywheel 503. The first clamping cylinder 506 and the second clamping cylinder 507 are respectively disposed on both sides of the eccentric shaft 502. The hydraulic motor 501 drives the eccentric shaft 502 to rotate and generate eccentric displacement. Through the first clamping cylinder 506 and the second clamping cylinder 507 disposed on both sides of the eccentric shaft 502, the displacement of the eccentric shaft 502 is transmitted to the vibrating arm, thereby causing the vibrating arm to vibrate at high frequency.

[0071] According to some embodiments, the eccentric vibration mechanism includes a hydraulic motor 501, an eccentric shaft 502, a flywheel 503, flange I 504, flange II 505, a first clamping cylinder 506, and a second clamping cylinder 507. A set of eccentric mechanisms 5 and two vibrating arms 4 are respectively provided at both ends of the supporting connecting frame 3. The other ends of the first clamping cylinder 506 and the second clamping cylinder 507 are simultaneously connected to the eccentric shaft 502 of the eccentric mechanism 5. The extension and retraction of the piston rods of the first clamping cylinder 506 and the second clamping cylinder 507 respectively control the clamping and releasing of the vibrating arms 4. The hydraulic motor 501 drives the eccentric shaft 502 to rotate, generating eccentric displacement. The first clamping cylinder 506 and the second clamping cylinder 507 transmit the displacement of the eccentric shaft 502 to the vibrating arms 4, thereby causing the vibrating arms 4 to vibrate at high frequency. The other end of the eccentric shaft 502 is provided with a flywheel 503, which is fixed on the eccentric shaft 502 and rotates together with the eccentric shaft 502. It uses its own inertial potential energy to reduce the load on the hydraulic motor 501 to a certain extent.

[0072] Figure 7 A schematic diagram of a vibrating arm assembly for a device for tamping railway ballast according to an example embodiment is shown.

[0073] See Figure 7 The figure shows a vibrating arm assembly 4 for a device used for tamping railway ballast according to an example embodiment. The vibrating arm assembly includes at least one pair of vibrating arms. Each vibrating arm includes two side plates 401, a connecting plate 405, a first vibrating arm pin 402, a second vibrating arm pin 410, a first anti-rotation sleeve 403, and a second anti-rotation sleeve 404. The two side plates 401 are disposed at both ends of the connecting plate 405. The first vibrating arm pin 402 and the second vibrating arm pin 410 are disposed between the two side plates 401 and fixed by the first anti-rotation sleeve 403 and the second anti-rotation sleeve 404. These components work together to ensure the stability and flexibility of the vibrating arm during operation.

[0074] According to some embodiments, the vibrating arm further includes: a seat block 407, side plates 406, and a tamping pick 408. The side plates 406 are disposed on both sides of the connecting plate 405, the seat block 407 is disposed on the inner side of the side plates 406, and the tamping pick 408 is disposed at the bottom of the seat block 407. In addition to the basic structural components, it also includes components such as the seat block 407, side plates 406, and tamping pick 408. The side plates 406 are installed on both sides of the connecting plate 405, while the seat block 407 is located inside the side plates 406, and the tamping pick 408 is disposed at the bottom of the seat block 407, which helps to improve the efficiency and quality of the tamping operation.

[0075] According to some embodiments, the vibrating arm further includes a vibration-damping rubber plate 409, which is disposed below the connecting plate 405 to prevent the vibrating arm from damaging the rails during construction. To reduce potential damage to the rails during construction, a vibration-damping rubber plate 409 is installed below the connecting plate 405, effectively preventing physical damage from direct contact and reducing noise pollution caused by vibration. The design of the vibrating arm assembly 4 fully considers various needs in practical applications, ensuring both operational effectiveness and equipment safety and environmental friendliness.

[0076] According to some embodiments, depending on the actual application scenario and the required vibration depth, the vibrating arm can be a welded steel plate structure or an integral cast structure to reduce mechanical wear and extend the service life of the equipment.

[0077] Figure 8 The diagram illustrates a tamping method of an apparatus for tamping railway ballast according to an example embodiment.

[0078] See Figure 8 The figure shows a tamping method of a device for tamping railway ballast according to an example embodiment. As can be seen from the figure, during mechanized tamping, a pair of high-frequency vibrating tamping picks are inserted into the ballast on both sides of the sleeper at the same time. They perform relative clamping actions at a specified depth to compact the ballast, causing the ballast to flow, gather and reorganize. This has the effects of stabilizing the position of the track after track shifting, improving the buffer capacity of the track bed, and eliminating certain line defects (such as empty slabs).

[0079] Figure 9 A schematic diagram of an apparatus for tamping railway ballast is shown according to another exemplary embodiment.

[0080] See Figure 9 , Figure 9 The illustration shows an apparatus for tamping railway ballast according to another example embodiment. The first vibrating arm pin 402 of the vibrating arm 4 is connected to the sleeve I 303 of the supporting connecting frame 3. The vibrating arm 4 can rotate a certain angle relative to the supporting connecting frame 3 along the first vibrating arm pin 402. The first clamping cylinder 506 and the first clamping cylinder 507 are respectively connected to the first vibrating arm pin 402 and the second vibrating arm pin 410 of the two vibrating arms 4. The other ends of the first clamping cylinder 506 and the first clamping cylinder 507 are simultaneously connected to the eccentric shaft 502 of the eccentric mechanism 5. The extension and retraction of the piston rods of the first clamping cylinder 506 and the first clamping cylinder 507 respectively control the clamping and releasing of the vibrating arm 4.

[0081] According to some embodiments, the connecting mechanism 1 includes a first pin assembly, which is connected to the excavator. The upper end of the connecting mechanism 1 is provided with the first pin assembly for connection to the excavator, and the lower end is connected to the housing 202 of the rotary drive mechanism 2 using high-strength bolts. The support base plate 203 of the rotary drive mechanism 2 is connected to the support plate 301 of the support connecting frame 3 by a vibration damping stack to reduce the ineffective transmission of vibration force. The rotary drive mechanism 2 is driven to rotate 360 ​​degrees infinitely by the rotation of the rotary motor 201.

[0082] According to some embodiments, the connection between the support frame and the vibrating arm can be a hinged structure, allowing the vibrating arm to be independently flipped upwards. Depending on the application scenario, the slewing drive mechanism 2 can also be driven by a hydraulic cylinder or an electric push rod, achieving 360° rotation in conjunction with a rotary joint. Alternatively, a hinged shaft can be used instead of the slewing support 206 as the slewing component to achieve 360° rotation, adapting to tamping operations in special conditions such as turnouts.

[0083] According to some embodiments, the position of the eccentric vibration mechanism 5 can be obtained by separate processing of the support connecting frame 3 and then installation and connection. After the support connecting frame 3 is welded as a whole, a round hole is machined for subsequent installation of the eccentric vibration mechanism 5.

[0084] According to some embodiments, the design of this utility model can also be applied to the design of a railway ballast maintenance system, the system including the device as described in any of the above, enabling the system to achieve efficient and rapid ballast tamping operations.

[0085] According to some embodiments, in the design scheme of this utility model, the device is connected to the excavator through the connecting mechanism 1, so that the device can travel on the track and carry out tamping operations with sufficient power. It can not only achieve rapid entry and exit from the track, but also, due to its small size and simple structure, it can be transported by road flatbed trailer. It does not need to run and park on the railway line all the time, and can be flexibly transported with high reliability.

[0086] According to some embodiments, in the design scheme of this utility model, the device has a simple structure. Compared with other micro-machines and manual tamping, this device uses eccentric shaft displacement to achieve vibration, which is not the excitation method of micro-machines. Therefore, it has abundant power and excellent vibration tamping effect, saving labor costs while improving the efficiency of tamping operations.

[0087] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0088] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0089] In the several embodiments provided by this utility model, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0090] Furthermore, the functional units in the various embodiments of this utility model can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0091] Exemplary embodiments of the present invention have been specifically shown and described above. It should be understood that the present invention is not limited to the detailed structures, arrangements, or implementation methods described herein; rather, the present invention is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended provisions.

Claims

1. A device for tamping railway ballast, characterized in that, The device is connected to an excavator and is driven by the excavator to perform tamping operations. It includes: a connecting mechanism, a rotary drive mechanism, a supporting connecting frame, an eccentric vibration mechanism, and a vibrating boom assembly. The connecting mechanism is used to connect the device to the excavator; The rotary drive mechanism is disposed between the connecting mechanism and the supporting connecting frame to realize multi-angle rotation of the device; The supporting connection frame is used to install and support the eccentric vibration mechanism and the vibration arm assembly. The eccentric vibration mechanism is respectively disposed at both ends of the support connection frame and is used to drive the vibration arm assembly to vibrate; The vibrating arm assembly is located at both ends of the eccentric vibration mechanism. During operation, the vibrating arm assembly is inserted into the railway ballast to vibrate and compact the ballast.

2. The apparatus according to claim 1, characterized in that, The connecting mechanism includes a first pin group, which is connected to the excavator.

3. The apparatus according to claim 1, characterized in that, The rotary drive mechanism includes a rotary motor, a housing, a support base plate, and a rotary support. The rotary motor is mounted on the housing and drives the rotary support to rotate through gear transmission. The rotary support is mounted on the support base plate.

4. The apparatus according to claim 1, characterized in that, The rotary drive mechanism further includes a hydraulic rotary joint and a stop. The hydraulic rotary joint is located at the rotation center of the rotary drive mechanism, and the stop is located at the edge of the hydraulic rotary joint to prevent the upper part of the hydraulic rotary joint from rotating with the mounting surface.

5. The apparatus according to claim 1, characterized in that, It also includes a vibration damping stack, which is disposed between the rotary drive mechanism and the support connection frame to reduce the transmission of ineffective vibrations.

6. The apparatus according to claim 1, characterized in that, The eccentric vibration mechanism includes an eccentric shaft, a flywheel, a hydraulic motor, a first clamping cylinder, and a second clamping cylinder. One end of the eccentric shaft is connected to the hydraulic motor, and the other end is fixed in the support frame by the flywheel. The first clamping cylinder and the second clamping cylinder are respectively disposed on both sides of the eccentric shaft. The hydraulic motor drives the eccentric shaft to rotate and generate eccentric displacement. Through the first clamping cylinder and the second clamping cylinder disposed on both sides of the eccentric shaft, the displacement of the eccentric shaft is transmitted to the vibrating arm, thereby causing the vibrating arm to vibrate at high frequency.

7. The apparatus according to claim 6, characterized in that, The vibrating arm assembly includes at least one pair of vibrating arms. Each vibrating arm includes two upright plates, a connecting plate, a first vibrating arm pin, a second vibrating arm pin, a first anti-rotation sleeve, and a second anti-rotation sleeve. The two upright plates are disposed at both ends of the connecting plate. The first vibrating arm pin and the second vibrating arm pin are disposed between the two upright plates and fixed by the first anti-rotation sleeve and the second anti-rotation sleeve.

8. The apparatus according to claim 7, characterized in that, The vibrating arm further includes a seat block, side plates, and a tamping pick. The side plates are disposed on both sides of the connecting plate, the seat block is disposed on the inner side of the side plates, and the tamping pick is disposed at the bottom of the seat block.

9. The apparatus according to claim 7, characterized in that, The vibrating arm also includes a vibration damping rubber plate, which is disposed below the connecting plate to prevent the vibrating arm from damaging the rails during construction.

10. The apparatus according to claim 7, characterized in that, The connection between the support frame and the vibrating arm can be a hinged structure, allowing the vibrating arm to be flipped upwards independently.

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