阅读说明：本技术 一种激振捣固装置 (Excitation tamping device ) 是由 王磊 李春龙 李居瑞 向康 于 2021-07-28 设计创作，主要内容包括：本发明涉及一种激振捣固装置,属于轨道交通技术领域。该装置包括可升降的捣固机架、铰装在捣固机架中部的液压激振油缸、与液压激振油缸活塞杆端铰接的至少一个连接板、分别固连于连接板两侧的双端伸缩夹持油缸、分别铰装在捣固机架两侧且上端分别与相应双端伸缩夹持油缸铰接的成对捣固臂。本发明实现了成对捣镐上端受力大小相等、方向相反而受力均衡、动作具有对称性,可以保证对中夹实,并且结构十分紧凑。此外,由于将激振驱动集中与夹持驱动合理分离设置,激振器件的数量减半,因此成本显著降低,而且沿轨枕长度方向的两组捣镐因安装在不同的捣固臂上,因此当对应位置的两处道砟密实度不一时,可以实现均匀的密实夹实。(The invention relates to an excitation tamping device, and belongs to the technical field of rail transit. The device comprises a liftable tamping frame, a hydraulic vibration excitation oil cylinder hinged in the middle of the tamping frame, at least one connecting plate hinged with the piston rod end of the hydraulic vibration excitation oil cylinder, double-end telescopic clamping oil cylinders respectively fixedly connected to two sides of the connecting plate, and paired tamping arms respectively hinged to two sides of the tamping frame and hinged to the corresponding double-end telescopic clamping oil cylinders at the upper ends. The invention realizes that the upper ends of the paired tamping picks are stressed in equal magnitude and opposite directions and are stressed in balanced manner, and the actions are symmetrical, thereby ensuring centering and clamping and having very compact structure. In addition, because concentrate the excitation drive with the reasonable separation setting of centre gripping drive, the quantity of excitation device reduces half, therefore the cost is showing and is reducing, and two sets of tamping picks along sleeper length direction are because of installing on different tamping arms moreover, consequently when the closely knit degree of two railway ballast in corresponding position is not in the interim, can realize even closely knit the clamp and reality.)

1. The utility model provides an excitation tamping unit, includes the tamping frame of liftable, its characterized in that:

the inner end of the at least one vibration excitation device is hinged to the middle part of the tamping machine frame;

at least one connecting plate hinged with the outer end of the excitation device;

at least two double-end telescopic clamping oil cylinders, wherein cylinder bodies of the two double-end telescopic clamping oil cylinders are fixedly connected to two sides of the connecting plate respectively;

and the two paired tamping arms are respectively hinged on two sides of the tamping frame, and the upper ends of the two paired tamping arms are respectively hinged with the piston ends of the corresponding double-end telescopic clamping oil cylinders.

2. The excitation tamping apparatus of claim 1, wherein: comprises two vibration exciting devices and two connecting plates which are symmetrically hinged at the middle part of a tamping machine frame, four double-end telescopic clamping oil cylinders and four pairs of tamping arms; the inner ends of the two connecting plates are respectively hinged with the piston rod ends of the corresponding excitation devices; the cylinder bodies of the four double-end telescopic clamping oil cylinders are fixedly connected to two sides of the corresponding connecting plate respectively; the four pairs of tamping arms are respectively hinged on two sides of the tamping frame, and the upper ends of the four pairs of tamping arms are respectively hinged with the piston ends of the corresponding double-end telescopic clamping oil cylinders.

3. The excitation tamping apparatus of claim 2, wherein: the hydraulic tamping device is symmetrical about two vertical planes which are vertical to each other.

4. The excitation tamping apparatus of claim 1, 2 or 3, wherein: the double-end telescopic clamping oil cylinder and the vibration excitation device are horizontally arranged, and the axes of the double-end telescopic clamping oil cylinder and the vibration excitation device are parallel to each other and are positioned in the same plane.

5. The excitation tamping apparatus of claim 4, wherein: the upper force arms of the outer tamping arms and the upper force arms of the inner tamping arms of the pair of tamping arms are equal, and the lower force arms of the outer tamping arms and the lower force arms of the inner tamping arms are equal.

6. The excitation tamping apparatus of claim 5, wherein: the tamping machine frame is composed of an upper cross beam, a lower cross beam and horizontal supporting beams, wherein the upper cross beam and the lower cross beam are fixedly connected with each other through lateral longitudinal columns on two sides and a middle longitudinal column, and the horizontal supporting beams are fixedly connected with two sides of the lower cross beam through a plurality of rib plates.

7. The excitation tamping apparatus of claim 6, wherein: guide post mounting holes vertically penetrating through the upper cross beam, the lower cross beam and the side longitudinal posts are formed in two sides of the tamping machine frame; and the middle part of the upper cross beam is provided with a mounting hole for mounting a piston rod of the lifting oil cylinder.

8. The excitation tamping apparatus of claim 6, wherein: the upper cross beam and the lower cross beam of the tamping frame are arranged approximately parallel to the axis of the hydraulic excitation oil cylinder.

9. The excitation tamping apparatus of claim 7, wherein: each horizontal supporting beam is respectively provided with four hinging holes for mounting tamping arms; and the middle longitudinal column is provided with two mounting holes for hinging the hydraulic excitation oil cylinder.

10. The excitation tamping apparatus of claim 1, wherein: the vibration excitation device is a hydraulic vibration excitation oil cylinder or an electromagnetic vibration exciter.

Technical Field

The invention relates to a tamping device, in particular to an excitation tamping device, and belongs to the technical field of rail transit.

Background

The tamping equipment is the key equipment used for tamping operation in the railway maintenance process in the field of rail transit, namely gathering and compacting ballast macadam under a rail, the typical structure is disclosed in Chinese patent documents with publication numbers CN106414849A and 201580024294.4, F), having a support element which is guided in a height-adjustable manner along a guide element relative to the frame of the tamping device, on which support element a pair of tamping tools embodied as a pivoting lever is pivotably supported, the specific tamping tools of the tamping tool pair for sinking into the ballast bed can be driven in opposite directions by means of a vibration drive and can be hydraulically fed, the tamping tools of a pair of tamping tools are each assigned a feed drive, wherein a plurality of tamping tools form a tamping unit, between which a gap is left for surrounding a rail and which are driven relative to one another.

The tamping unit and the feed drive are mechanically connected and associated with each oscillating lever, and the guide is arranged outside the working area of the oscillating lever, characterized in that the guide acts directly on the respective support and moves in a stationary guide of the frame of the tamping apparatus.

The technical scheme provides a hydraulic-excitation double-sleeper tamping device, 4 pickaxe arms are driven by 4 hydraulic-excitation oil cylinders to vibrate and clamp, and accordingly tamping operation near a single-side steel rail on 2 sleepers is achieved. This solution has the following drawbacks: 1) four hydraulic shock excitation oil cylinders are needed, so the cost is high; 2) the paired tamping arms are respectively driven by hydraulic cylinders extending from the upper ends of the paired tamping arms in different straight lines, so that the stress balance is poor, and the centering and clamping are not guaranteed; 3) two groups of tamping picks in the length direction of the sleeper can only be synchronously clamped and compacted due to being arranged on the same pick arm, and when the compactness of two railway ballasts at corresponding positions is not certain, the uniform and compact clamping is difficult to realize.

Disclosure of Invention

The invention aims to: aiming at the defects existing in the prior art, the vibration excitation tamping device which is compact in structure, balanced in stress and economical in cost is provided through structural improvement, and a better compacting effect is achieved.

In order to achieve the purposes, the basic technical scheme of the vibration excitation tamping device is as follows: comprises a liftable tamping machine frame;

the vibration excitation device is hinged in the middle of the tamping machine frame;

at least one connecting plate hinged with the vibration excitation device;

at least two double-end telescopic clamping oil cylinders, wherein cylinder bodies of the two double-end telescopic clamping oil cylinders are fixedly connected to two sides of the connecting plate respectively;

and the two paired tamping arms are respectively hinged on two sides of the tamping machine frame, and the upper ends of the two paired tamping arms are respectively hinged with the piston ends of the corresponding double-end telescopic clamping oil cylinders.

Compared with the prior art, the invention adopts a reasonable arrangement scheme of 'excitation drive concentration and clamping drive dispersion', and the upper ends of the paired tamping arms are respectively hinged with the extending ends of the two piston rods of the double-end telescopic clamping oil cylinders, so that the purposes of equal stress, opposite directions and balanced stress on the upper ends of the paired tamping picks and symmetrical action are realized, the centering and clamping can be ensured, and the structure is very compact; secondly, because the invention adopts the reasonable arrangement that the two parallel double-end telescopic clamping oil cylinders are fixedly connected on the two sides of the connecting plate, and the inner ends of the two telescopic clamping oil cylinders are connected with the vibration exciting devices, each vibration exciting device (such as a hydraulic vibration exciter or an electromagnetic vibration exciter) can simultaneously drive 4 tamping arms to vibrate, thereby realizing the high-efficiency vibration exciting effect of ' one with ' four ', and thus, the number of the vibration exciting devices (such as expensive hydraulic vibration exciters) used in the invention can be halved, thereby obviously reducing the cost and effectively solving the problems of high cost and difficult popularization and application of the hydraulic vibration exciting tamping device; and the paired tamping arms are respectively and independently driven by piston rods at two ends of the double-end telescopic clamping oil cylinder, two groups of tamping picks along the length direction of the sleeper are arranged on different tamping arms, and when the compactness of two ballast at corresponding positions is different, each group of tamping picks can move different distances, so that the uniform compaction effect at each tamping position can be ensured. In addition, the connecting plate adopted by the invention can realize the modularized integrated connection of the double-end telescopic clamping oil cylinder and the vibration excitation device, and is particularly favorable for batch production and assembly.

The invention is further perfected as follows:

comprises two vibration exciting devices and two connecting plates which are symmetrically hinged at the middle part of a tamping machine frame, four telescopic clamping oil cylinders and four pairs of tamping arms; the inner ends of the two connecting plates are respectively hinged with the piston rod ends of the corresponding excitation devices; the cylinder bodies of the four telescopic clamping cylinders are respectively fixedly connected to two sides of the corresponding connecting plate; the four pairs of tamping arms are respectively hinged on two sides of the tamping frame, and the upper ends of the four pairs of tamping arms are respectively hinged with the piston ends of the corresponding double-end telescopic clamping oil cylinders. The advantages of compact structure and balanced stress of the tamping device are further embodied, and the tamping operation of two sleepers can be simultaneously carried out.

The hydraulic tamping device is symmetrical about two vertical planes which are vertical to each other, at least contributes to realizing a more compact and balanced stress structure, and is convenient to manufacture and assemble.

The double-end telescopic clamping oil cylinder and the vibration excitation device are horizontally arranged, and the axes of the double-end telescopic clamping oil cylinder and the vibration excitation device are parallel to each other and are positioned in the same plane, so that the radial vibration force borne by the double-end telescopic clamping oil cylinder is reduced; the double-end telescopic clamping oil cylinder is ensured to be in a more reasonable stress state, the service life of the double-end telescopic clamping oil cylinder is effectively prolonged, and the probability of faults of oil leakage, telescopic clamping stagnation and the like of the clamping oil cylinder is reduced. And can further guarantee that tamping unit is in more stable state when the operation to reduce the influence to tamping car stability and detection precision.

The upper force arms of the outer tamping arms and the upper force arms of the inner tamping arms of the pair of tamping arms are equal, and the lower force arms of the outer tamping arms and the lower force arms of the inner tamping arms are equal. The tamping pickaxe has the advantages that the tamping pickaxes fixedly connected with the inner tamping arm and the outer tamping arm generate basically same clamping force, the counteracting force of the track bed is favorably counteracted at the double-end telescopic clamping oil cylinder, the load on the vibration exciting devices (such as the hydraulic vibration exciting oil cylinder) is lightened, the technical requirements on the vibration exciting devices (such as the hydraulic vibration exciting oil cylinder) are favorably reduced, and the cost is further reduced.

The tamping machine frame is composed of an upper cross beam and a lower cross beam which are fixedly connected with side longitudinal columns and middle longitudinal columns on two sides, and a horizontal supporting beam which is fixedly connected with two sides of the lower cross beam through a plurality of rib plates, wherein the horizontal supporting beam and the lower cross beam on two sides and the rib plates are constructed into a space for accommodating a steel rail on one side. The upper cross beam and the lower cross beam of the tamping frame are arranged approximately parallel to the axis of the hydraulic excitation oil cylinder. The rack structure is simple and compact, has a space for accommodating a unilateral steel rail, has enough strength, and can better bear the functions of installing a vibration exciter and a double-end telescopic clamping oil cylinder and bear various reaction forces during tamping operation.

Each horizontal supporting beam is respectively provided with four hinging holes for mounting tamping arms; and the middle longitudinal column is provided with two mounting holes for hinging the excitation device.

The vibration excitation device is a hydraulic vibration excitation oil cylinder or an electromagnetic vibration exciter.

Drawings

The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the working state of the embodiment in fig. 1.

Fig. 3 is a schematic perspective view of the tamping frame of the embodiment of fig. 1.

Fig. 4 is a schematic perspective exploded view of the double-ended telescopic clamping cylinder assembly of the embodiment of fig. 1 (in the figure, the broken line is a hydraulic shock excitation cylinder).

Fig. 5 is a partially exploded perspective view of the embodiment of fig. 1.

Fig. 6 is a schematic view of a motion analysis perspective structure of the embodiment of fig. 1.

Fig. 7 is a schematic plan projection structure of the embodiment of fig. 1.

Fig. 8 is a schematic sectional structure view of H-H of fig. 7.

Fig. 9 is a schematic perspective view of the connection plate of the embodiment of fig. 1.

FIG. 10 is a schematic cross-sectional view of the double-ended telescoping clamp cylinder of the embodiment of FIG. 1.

Detailed Description

Example one

The embodiment is a double-sleeper hydraulic shock excitation tamping device, the basic structure of which is shown in fig. 1 (see fig. 2), and the hydraulic shock excitation tamping device X mainly comprises a liftable tamping frame 7, two hydraulic shock excitation oil cylinders 6 symmetrically hinged in the middle of the tamping frame 7, two connecting plates 5 respectively hinged with the piston rod ends of the two hydraulic shock excitation oil cylinders 6, four double-end telescopic clamping oil cylinders 4 respectively fixedly connected with the two connecting plates, and four pairs of tamping arms respectively hinged on two sides of the tamping frame 7 and respectively hinged with the corresponding double-end telescopic clamping oil cylinders at the upper ends. The device can be driven by the lifting cylinder 8 to lift along a vertically arranged guide column 9 arranged on a vehicle body frame 10, and can be used for tamping the area near the single-side steel rail 2 on the 2 sleepers 1. The hydraulic excitation oil cylinder 6 is an oil cylinder with a piston rod capable of high-frequency expansion and contraction under the control of a servo valve.

As shown in fig. 3, the tamping frame 7 is composed of a frame structure composed of an upper cross beam 7-1 and a lower cross beam 7-2 which are connected with each other by side longitudinal columns 7-5 and a middle longitudinal column 7-4 at both sides, and horizontal support beams 7-3 which are respectively connected with both sides of the lower cross beam 7-2 by a plurality of rib plates 7-6. Two sides of the tamping machine frame 7 are provided with mounting holes 7-7 vertically penetrating through the guide posts 9 of the upper cross beam 7-1, the lower cross beam 7-2 and the side longitudinal posts 7-5, and the guide posts 9 are sleeved and matched with the guide posts in a sliding way; the middle part of the upper cross beam 7-1 is provided with a mounting hole 7-1-1 for mounting a lifting oil cylinder 8. Each horizontal supporting beam 7-3 is provided with 4 hinging holes 7-3-1 for mounting the tamping arms 3; two mounting holes 7-4-1 for hinging a hydraulic excitation oil cylinder 6 are formed in the middle longitudinal column 7-4.

As shown in FIG. 4, two double-end telescopic clamping oil cylinders 4 are rigidly connected with a connecting hole 5-1 of a connecting plate 5 through connecting holes 4-2 to form a double-end telescopic clamping oil cylinder assembly 12 through a hinged hole bolt 11. As shown in fig. 3 and 4, the connecting hole 5-2 of the connecting plate 5 is hinged with the piston rod hole 6-1 of the hydraulic excitation oil cylinder 6. A tail connecting hole 6-2 of the hydraulic shock excitation oil cylinder 6 is hinged with a mounting hole 7-4-1 of a middle longitudinal column 7-4 of the tamping frame 7.

As shown in fig. 5, a piston rod end mounting hole 4-1 of the double-end telescopic clamping cylinder 4 is hinged with an upper end mounting hole 3-1 of the tamping arm 3; the middle mounting hole 3-2 of the tamping arm 3 is hinged with a hinge mounting hole 7-3-1 of a horizontal supporting beam 7-3 (a hinge pin shaft for hinging is not shown in the figure).

As shown in fig. 6, the tamping frame 7, the hydraulic shock excitation cylinder 6, the double-end telescopic clamping cylinder assembly 12 and the tamping arm 3 form a set of link mechanism, when the piston rod of the hydraulic shock excitation cylinder 6 moves in a short-stroke high-frequency telescopic manner along the direction C, the double-end telescopic clamping cylinder assembly 12 is driven to generate left-right shaking mainly along the horizontal direction, so that the tamping arm 3 is driven to generate swinging movement, and as a result, the small amplitude swinging vibration along the direction D at the tail end of the tamping pick 3-1 rigidly connected to the tamping arm 3 is expressed; when piston rods at two ends of the double-end telescopic clamping oil cylinder 4 extend out along the direction A, the tamping arm 3 connected with the double-end telescopic clamping oil cylinder is pushed to rotate around the mounting hole 3-2, and therefore the clamping action of the tamping pick 3-1 along the direction B is formed.

As shown in fig. 7, the overall structural arrangement of the hydraulic tamping unit X is symmetrical about the symmetrical planes 13 and 14 in two vertical directions, and the movements of the piston rods of the hydraulic excitation cylinders 6 on both sides are synchronized and in opposite directions, so that the vibration forces on both sides can be cancelled out. The double-end telescopic clamping oil cylinder 4 and the hydraulic excitation oil cylinder 6 are horizontally arranged, the axes of the double-end telescopic clamping oil cylinder and the hydraulic excitation oil cylinder are parallel to each other and are optimal in the same plane, and radial load borne by the double-end telescopic clamping oil cylinder 4 can be reduced. The upper force arm L1 of the tamping arm 3 positioned on the outer side is basically equal to the upper force arm L2 of the tamping arm 3 positioned on the inner side, and the lower force arm L3 of the tamping arm 3 positioned on the outer side is basically equal to the lower force arm L4 of the tamping arm 3 positioned on the inner side, so that the reaction force borne by the tamping arm 3 during ballast clamping can be fully offset by the double-end telescopic clamping oil cylinder 4, and the influence on the hydraulic shock excitation oil cylinder 6 is reduced. The tamping arms 3 located on the outer side, which may also be referred to simply as "outer tamping arms", and the tamping arms 3 located on the inner side, which may also be referred to simply as "inner tamping arms".

The specific structure of the connecting plate 5 in this embodiment is as shown in fig. 9, and includes a bottom plate and a double-lug plate protruding upward from the middle of the bottom plate, the double-lug plate is provided with a middle connecting hole 5-2 for being hinged to a piston rod hole 6-1 of a hydraulic excitation cylinder 6, and four connecting holes 5-1 symmetrically arranged on both sides of the bottom plate are used for being rigidly connected to a connecting hole 4-2 of a double-end telescopic clamping cylinder 4. The cross-sectional structure of the double-end telescopic clamping oil cylinder 4 is shown in figure 10, the double-end telescopic clamping oil cylinder is provided with an integrated double-cavity cylinder body 4-2, a left cavity and a right cavity are mutually independent, and the actions of piston rods 4-3 at two ends are not mutually interfered. Besides, the clamping device can also be formed by rigidly connecting two clamping oil cylinders.

Experiments show that the present embodiment has the following advantages:

(1) in the embodiment, an integrated double-end telescopic clamping oil cylinder (or two oil cylinders in rigid connection) is used as a clamping mechanism to drive the paired tamping arms to open and close, so that the structure is compact, and the force balance and the clamping centering performance are good;

(2) the embodiment provides a novel tamping structure with centralized vibration driving and reasonably dispersed clamping driving based on reasonable configuration that the middle part of a connecting plate is connected with an excitation device and two sides of the connecting plate are respectively connected with double-end telescopic clamping oil cylinders. Each set of clamping mechanism (comprising a double-end telescopic clamping oil cylinder and a tamping arm) is connected with a hydraulic vibration exciter on the tamping frame through a connecting plate, each hydraulic vibration exciter can simultaneously drive 4 tamping arms to vibrate, so that a one-to-four efficient vibration excitation effect is realized, and the number of expensive hydraulic vibration exciters can be halved, thereby greatly reducing the manufacturing cost of equipment and effectively solving the problems of high cost and difficult popularization and application of the hydraulic vibration excitation tamping device; on the other hand, the paired tamping arms are driven by piston rods at two ends of the double-end telescopic clamping oil cylinder independently, so that the uniform compaction effect at each tamping position can be ensured.

Therefore, the embodiment can realize a more efficient excitation transmission effect and a more uniform compact effect, and the connecting structure between the connecting plate, the double-end telescopic clamping cylinder and the hydraulic excitation is simple, so that the modular assembly is facilitated, and the mass production is facilitated.

(3) The axial line of the double-end telescopic clamping oil cylinder is horizontally arranged, is parallel to the axial line of the hydraulic vibration exciter and is positioned at the same horizontal plane, so that the radial vibration force borne by the double-end telescopic clamping oil cylinder is reduced; the double-end telescopic clamping oil cylinder is ensured to be in a more reasonable stress state, the service life of the double-end telescopic clamping oil cylinder is effectively prolonged, and the probability of faults of oil leakage, telescopic clamping stagnation and the like of the clamping oil cylinder is reduced.

(4) The clamping force arm of the tamping arm positioned on the outer side is equal to the clamping force arm of the tamping arm positioned on the inner side, so that the tamping picks on the tamping arms positioned on the inner side and the outer side generate the same clamping force, the counteracting force of the track bed is favorably counteracted at the double-end telescopic clamping oil cylinder, the load of the hydraulic vibration exciter is reduced, the technical requirements on the hydraulic vibration exciter are reduced, and the cost is further reduced;

(5) the guide post mounting holes arranged on the two side longitudinal posts on the rack and the mounting holes for mounting the lifting oil cylinders arranged on the upper cross beam ensure that the tamping device carried by the whole rack can smoothly lift under the driving of the lifting oil cylinders.

In a word, by adopting the embodiment, the tamping device which is compact in structure, balanced in stress and economical in cost can be provided, and on one hand, uniform compactness of the ballast at each tamping position can be ensured; on the other hand, the vibration excitation and clamping driving mechanism formed by the double-end telescopic clamping oil cylinder and the hydraulic vibration exciter on the connecting plate obviously reduces the number of hydraulic vibration excitation oil cylinders, greatly reduces the manufacturing cost and is beneficial to large-scale manufacturing and popularization and application.

In addition to the above embodiments, the present invention may have other embodiments. For example, only the left half of the tamping frame (7) is added with 1 hydraulic shock excitation oil cylinder (6), 2 double-end telescopic clamping oil cylinders (4), 1 connecting plate (5) and 4 tamping arms (3), so that a single-sleeper hydraulic shock excitation tamping unit can be formed; for another example, the hydraulic excitation oil cylinder (6) can be replaced by an electromagnetic vibration exciter; and so on. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.