CN117188225A - Tamping device based on dig quick-witted platform - Google Patents
Tamping device based on dig quick-witted platform Download PDFInfo
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- CN117188225A CN117188225A CN202311110028.6A CN202311110028A CN117188225A CN 117188225 A CN117188225 A CN 117188225A CN 202311110028 A CN202311110028 A CN 202311110028A CN 117188225 A CN117188225 A CN 117188225A
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- 230000007306 turnover Effects 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 27
- 241001669679 Eleotris Species 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention relates to a tamping device based on a digger platform, and belongs to the technical field of rail transit. The upper part of the device box body is connected with a hanging lug serving as an excavator interface through a rotary driving assembly; a pair of lower inserting limiting parts are arranged in the middle of the lower part of the box body, and the middle parts of the left pick arm part and the right pick arm part are hinged at two sides respectively; the pick arm part is provided with a fixed tamping pick and a turnover tamping pick through a fixed arm and a turnover arm; the upper part of the turning arm is hinged with the pick arm main body, the outer side of the turning arm is hinged with the telescopic end of the turning oil cylinder, and the upper part of the cylinder body of the turning oil cylinder is hinged with the pick arm main body. After the invention is adopted, the channel is convenient to go up and down, the adaptability and the flexibility are greatly improved, and the line maintenance requirement of a small range or a small space can be practically met.
Description
Technical Field
The invention relates to a tamping device, in particular to a tamping device based on a platform of an excavator, and belongs to the technical field of rail transit.
Background
The ballast stones below the railway track sleeper can be compacted and sunk after a period of time to cause the track to descend; in addition, after railway sleeper and ballast cleaning and replacing, the newly paved ballast stone also has the problem of loosening, so that the tamping is needed to improve the density of the ballast, enhance the bearing capacity of a railway subgrade, and the tamping operation is not performed after the railway track maintenance, the railway newly paved line and the ballast cleaning and replacing.
The applicant knows that the existing large-scale tamping vehicles have limited quantity and poor flexibility, so that the small-scale and small-space line tamping operation mainly depends on small tamping tools mainly comprising a hand-held vibrating tamping machine and a hand-push type small hydraulic tamping machine, but the small tamping tools have high labor intensity and inconvenient operation. In recent years, although sleeper replacement equipment developed by taking a digger as a platform has been widely applied and has remarkable effect in railway maintenance, the development of a tamping device of the digger platform cannot keep up, and particularly, tamping facilities suitable for maintenance of small-scale or small-working-space lines such as turnouts, railway bridges and tunnels are not available.
As can be seen from the search, chinese patent application No. 202022229487.4 discloses a tamper assembly and excavator comprising a tamper base, pick assembly, shock absorber, swing mechanism, arm mount, etc. Although the tamping device is developed based on the platform of the excavator and can be used in a certain small range and a small working space, the tamping device has limitations on flexibility, convenience and the like in the tamping working process because the lower insertion stroke cannot be controlled and only two pairs of pick arms can be simultaneously inserted.
Disclosure of Invention
The invention aims at: aiming at the limitations of the prior art, through structural improvement, the tamping device based on the excavator platform, which can be inserted downwards with a single arm or double arms as required and with adjustable downward insertion stroke, is provided, so that the tamping device is suitable for line maintenance in a small range or space.
In order to achieve the above purpose, the basic technical scheme of the tamping device based on the excavator platform of the invention is as follows: the upper part of the box body is connected with a hanging lug serving as an excavator interface through a rotary driving assembly; a lower insertion limiting component is arranged in the middle of the lower part of the box body, and the middle parts of the left pick arm component and the right pick arm component are hinged at two sides respectively;
the lower inserting limiting part comprises a vertical guide pipe fixedly connected with the box body, a positioning block matched with the guide pipe is inserted in the guide pipe, and the guide pipe and the positioning block are positioned by selecting positioning Kong Xiaojie which are vertically arranged at intervals;
the lower part of the pick arm main body of the pick arm part is provided with a fixed tamping pick and a turnover tamping pick through a fixed arm and a turnover arm respectively; the upper part of the overturning arm is hinged with the pick arm main body, the outer side of the overturning arm is hinged with the telescopic end of the overturning oil cylinder, and the upper part of the cylinder body of the overturning oil cylinder is hinged with the pick arm main body.
After the invention is adopted, the overturning oil cylinder is controlled, so that the overturning tamping pick can be positioned at a parallel fixed tamping pick position, double-arm downward insertion and common tamping can be realized, the overturning oil cylinder can also be positioned at a raising position, single-arm tamping with only fixed tamping pick operation can be realized, positioning holes at different high and low positions can be selected as required for inserting positioning pins, and downward insertion travel can be regulated, thereby not only being convenient for going up and down channels, but also greatly improving adaptability and flexibility, and really meeting the line maintenance requirement of a small range or a small space.
The invention is further perfected as follows:
the horizontal flange surface at the top of the box body is fixedly connected with the lower end of the slewing bearing worm gear ring in the slewing drive assembly.
The middle of the box body is provided with a coaxial supporting hole for supporting the eccentric crankshaft of the vibrating shaft component, and the two sides of the bottom are symmetrically provided with hinging holes for hinging the corresponding pick arm components respectively.
The front side and the rear side of the middle of the bottom of the box body are mounting surfaces for mounting the lower insertion limiting component.
The guide pipe comprises a vertical flange surface fixedly connected with the mounting surface of the box body, and the vertical flange surface is fixedly connected with the rectangular pipe through a bent arm.
The lower end of the guide tube is provided with an adaptive positioning block with a buffer cushion.
The eccentric crankshaft, the inner ends of the single-lug oil cylinder and the double-lug oil cylinder respectively form a hinged pair; the upper fork openings of the two pick arm main bodies are respectively hinged with the overhanging ends of the corresponding single-lug oil cylinder and double-lug oil cylinder.
The upper part of the overturning arm is hinged with the middle part of the pick arm main body through an overturning shaft, and the upper part of the cylinder body of the overturning cylinder is hinged with the outer side of the pick arm main body.
The overturning tamping pick forms an outer tamping pick, and the length direction of the overturning tamping pick is perpendicular to the axis direction of the overturning shaft.
The rotary driving assembly comprises an inner ring which forms a revolute pair with the worm gear ring, and the upper end of the inner ring is fixedly connected with the lower end of the hanging lug.
The rotary driving assembly and the box body are provided with a rotary joint, the upper part and the lower part of the rotary joint form a revolute pair, the upper part of the rotary joint is fixedly connected with the hanging lugs, and the lower part of the rotary joint is connected with the box body.
The hydraulic motor of the slewing drive assembly receives external hydraulic power to drive the worm to rotate, and the worm enables the box body to rotate relative to the hanging lugs through the worm gear ring.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic side view of the embodiment of fig. 1.
Fig. 3 is a schematic perspective view of the case of the embodiment of fig. 1.
Fig. 4 is a schematic cross-sectional view of a connection portion of the swing drive assembly of the embodiment of fig. 1.
Fig. 5 is a schematic perspective exploded view of the lower plug-in limiting member of the embodiment of fig. 1.
Fig. 6 is a construction diagram of the working state of the embodiment of fig. 1 mounted on the excavator platform.
Fig. 7 is a schematic diagram of the tamping dynamics of the embodiment of fig. 1 mounted to a rig floor.
Fig. 8 is a side view of fig. 7.
Description of the embodiments
Examples
The basic structure of the tamping device based on the excavator platform in the embodiment is shown in fig. 1 and 2, and mainly comprises a hanging lug 1, a rotary joint 2, a rotary driving assembly 3, a vibration shaft part 4, a double-lug oil cylinder 5, a lower inserting limiting part 6, a pick arm part 7, a single-lug oil cylinder 8 and a box body 9.
In the vibration shaft part 4, an eccentric crankshaft is driven by a hydraulic motor 4-1 which is filled with hydraulic oil, and the eccentric crankshaft, the inner ends of a single-lug oil cylinder 8 and a double-lug oil cylinder 5 respectively form a hinged pair. The overhanging end piston rods of the single-lug oil cylinder 8 and the double-lug oil cylinder 5 are respectively hinged to the upper parts of the left pick arm part 7 and the right pick arm part 7. Therefore, when the eccentric crankshaft rotates, vibration is generated, and the vibration is transmitted to the corresponding pick arm part through the single-lug and double-lug oil cylinders, so that the forced driving vibration of the eccentric crankshaft generates tamping action, and the working principle is similar to that of the prior art, so that the working principle is not expanded in detail.
The structure of the box 9 of the embodiment is as shown in fig. 3 and fig. 4, the middle part supports the eccentric crankshaft of the vibration shaft component 4, the center of the upper part is provided with the rotary joint 2, and the rotary joint is connected with the hanging lug 1 serving as the excavator interface through the rotary driving component 3. A pair of lower inserting limiting parts 6 are arranged in the middle of the lower part of the box body 9, and the middle parts of the left pick arm part 7 and the right pick arm part 7 are hinged on two sides respectively. Specifically, the box body of the embodiment is of an integral welding structure, a horizontal flange surface 901 at the top of the box body is fixedly connected with the lower end of a slewing bearing worm gear ring 301 in a slewing drive assembly 3, coaxial supporting holes 902 and 903 for supporting an eccentric crankshaft of a vibrating shaft component 4 are formed in the middle of the box body, hinging holes 904 and 905 are symmetrically formed in two sides of the bottom of the box body and are respectively used for hinging the middle of a corresponding pick arm component 7 so that the pick arm component can swing around a hinging center, and mounting surfaces 906 for inserting a limiting component 6 downwards are formed in the front side and the rear side of the middle of the bottom of the box body and are used for mounting the inserting limiting component 6 downwards.
The concrete structure of the lower inserting limiting component in this embodiment is shown in fig. 5, and the lower inserting limiting component comprises a vertical flange face 601, a bent arm 602, a reinforced rectangular pipe 603 and a rectangular section vertical guide pipe 604 fixedly connected with a middle mounting face 906 at the lower part of the box body 9, wherein the lower end of the guide pipe 604 is inserted with an adaptive positioning block 605 with a buffer cushion 606, the guide pipe 604 and the positioning block 605 are respectively provided with two vertical row positioning holes which are arranged at an upper interval and a lower interval, and the aim of changing the lower inserting depth is achieved by selecting pin joint positioning connection. The bumper pad 606 provides cushioning during insertion of the pick arm into contact with the track, avoiding rigid collisions.
The pick arm member 7 is structured as shown in fig. 1 and 2, wherein the upper fork of the pick arm body 701 is hinged to the overhanging end of the corresponding single-lug or double-lug cylinder 8 or 5, the middle part of the pick arm member is hinged to a hinge hole 904 or 905 at the bottom of the box 9, and the lower part of the pick arm member is provided with a fixed tamping pick 706 and a turnover tamping pick 705 respectively through a fixed arm 707 and a turnover arm 704 which extend downwards from the pick arm body 701. The upper part of the turning arm 704 is hinged with the middle part of the pick arm body 701 through a turning shaft 703, the outer side is hinged with the telescopic end of the turning cylinder 702, and the upper part of the cylinder body of the turning cylinder 702 is hinged with the outer side of the pick arm body 701. The reverse tamping pick 705 constitutes an outer tamping pick, and its longitudinal direction is perpendicular to the axial direction of the reverse shaft 703.
After the invention is adopted, the overturning oil cylinder is controlled, so that the overturning tamping pick can be positioned at a parallel fixed tamping pick position, double-arm downward insertion and common tamping can be realized, the overturning oil cylinder can also be positioned at a raising position, single-arm tamping with only fixed tamping pick operation can be realized, positioning holes at different high and low positions can be selected as required for inserting positioning pins, and downward insertion travel can be regulated, thereby not only being convenient for going up and down channels, but also greatly improving adaptability and flexibility, and really meeting the line maintenance requirement of a small range or a small space.
The upper end of an inner ring 302 of a revolute pair formed by the slewing drive assembly 3 and the worm gear ring 301 is fixedly connected with the lower end of the hanging lug 1. The upper part and the lower part of the rotary joint 2 positioned in the center of the upper parts of the rotary driving assembly 3 and the box body 9 form a revolute pair, the upper part is fixedly connected with the hanging lugs 1, and the lower part is connected with the box body 9. The hydraulic motor 3-1 of the rotary driving assembly 3 can receive external hydraulic power, drive the worm to rotate, drive the worm gear ring to rotate the box body relative to the hanging lugs, and further drive the lower pick arm part 7 to index according to the requirement. More specifically, the bottom of the hanging lug 1 is fixedly connected with the inner ring of the slewing bearing in the slewing drive assembly 3, and the upper end face of the box body 9 is fixedly connected with the worm gear ring of the slewing bearing in the slewing drive assembly 3, so that under the drive of the hydraulic motor 3-1 of the slewing drive assembly 3, the box body 9 and accessories thereof realize 360-degree slewing through worm gear pairs, and the ballast tamping at any position is flexibly realized. The swivel joint 2 arranged at the swivel center of the swivel drive assembly 3 ensures that the oil pipe passing therethrough is not wound during the swivel process. The inner end and the outer end of the single-lug oil cylinder 8 and the double-lug oil cylinder 5 are hinged on the eccentric crankshaft of the vibration shaft part 4 and the pick arm part 7 respectively, so that the rotation of the hydraulic motor 4-1 can be converted into the vibration of the pick arm part 7, the clamping action of railway ballast is realized through the extension and retraction of the single-lug oil cylinder 8 and the double-lug oil cylinder 5, one end of the lower inserting limiting part 6 is fixedly connected to the box body 9, and the lower inserting stroke is regulated and controlled through the height-adjustable guide structure. So as to ensure that the pick arm part 7 can smoothly insert the railway ballast and clamp the railway ballast as required, thereby realizing tamping of the railway ballast.
In actual operation, as shown in fig. 6, the upper part of the hanging lug 1 is hinged with the boom B of the excavator J, the working principle is basically the same as that of the prior art, the excavator drives the tamping device to move along the track, the working position of the tamping device is adjusted and the tamping lower insertion force is provided by the boom B, and the tamping device is driven to rotate by the hydraulic power provided by the excavator to drive the driving component 3, the vibration shaft component 4, the turnover oil cylinder 702, the double-lug oil cylinder 5 and the single-lug oil cylinder 8, so that the actions of rotation, vibration, turnover, insertion, clamping and the like required by the tamping are realized (see fig. 7 and 8). Practice proves that the tamping device based on the excavator platform has the following advantages:
1) The horizontal rotation at any angle can be realized, and the tamping of railway ballast at any position can be flexibly realized;
2) The lower insertion stroke can be controlled by means of the lower insertion limiting component, and the lower insertion limiting component is suitable for tamping of various track panels;
3) The overturning oil cylinder structure can drive the overturning arm to overturn so as to adapt to a narrow operation space, and the adaptability and the flexibility are obviously improved;
4) The rotary joint ensures that the oil pipe is not wound in the rotary process and ensures the smooth flow.
In a word, the tamping device based on the excavator platform is specially developed for railway ballast tamping with limited small range and operation space, is particularly suitable for railway turnout and bridge tunneling tamping, has higher flexibility and adaptability than the existing small tamping machine, and reduces the labor intensity of personnel.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (12)
1. A tamping device based on a dig platform comprises a box body with an eccentric crankshaft supported at the middle part, wherein the upper part of the box body is connected with a hanging lug serving as a dig interface through a rotary driving assembly; a lower insertion limiting component is arranged in the middle of the lower part of the box body, and the middle parts of the left pick arm component and the right pick arm component are hinged at two sides respectively; the method is characterized in that:
the lower inserting limiting part comprises a vertical guide pipe fixedly connected with the box body, a positioning block matched with the guide pipe is inserted in the guide pipe, and the guide pipe and the positioning block are positioned by selecting positioning Kong Xiaojie which are vertically arranged at intervals;
the lower part of the pick arm main body of the pick arm part is provided with a fixed tamping pick and a turnover tamping pick through a fixed arm and a turnover arm respectively; the upper part of the overturning arm is hinged with the pick arm main body, the outer side of the overturning arm is hinged with the telescopic end of the overturning oil cylinder, and the upper part of the cylinder body of the overturning oil cylinder is hinged with the pick arm main body.
2. The tamping device based on an excavator platform of claim 1 wherein: the horizontal flange surface at the top of the box body is fixedly connected with the lower end of the slewing bearing worm gear ring in the slewing drive assembly.
3. The tamping device based on an excavator platform of claim 2 wherein: the middle of the box body is provided with a coaxial supporting hole for supporting the eccentric crankshaft of the vibrating shaft component, and the two sides of the bottom are symmetrically provided with hinging holes for hinging the corresponding pick arm components respectively.
4. A tamping device based on an excavator platform as claimed in claim 3, wherein: the front side and the rear side of the middle of the bottom of the box body are mounting surfaces for mounting the lower insertion limiting component.
5. The tamping device based on an excavator platform of claim 1 wherein: the guide pipe comprises a vertical flange surface fixedly connected with the mounting surface of the box body, and the vertical flange surface is fixedly connected with the rectangular pipe through a bent arm.
6. The tamper-evident system of claim 5, wherein: the lower end of the guide tube is provided with an adaptive positioning block with a buffer cushion.
7. The tamping device based on an excavator platform of claim 1 wherein: the eccentric crankshaft, the inner ends of the single-lug oil cylinder and the double-lug oil cylinder respectively form a hinged pair; the upper fork openings of the two pick arm main bodies are respectively hinged with the overhanging ends of the corresponding single-lug oil cylinder and double-lug oil cylinder.
8. The tamper-evident system of claim 7, wherein: the upper part of the overturning arm is hinged with the middle part of the pick arm main body through an overturning shaft, and the upper part of the cylinder body of the overturning cylinder is hinged with the outer side of the pick arm main body.
9. The machine platform based tamping device of claim 8, wherein: the overturning tamping pick forms an outer tamping pick, and the length direction of the overturning tamping pick is perpendicular to the axis direction of the overturning shaft.
10. The tamping device based on an excavator platform of claim 2 wherein: the rotary driving assembly comprises an inner ring which forms a revolute pair with the worm gear ring, and the upper end of the inner ring is fixedly connected with the lower end of the hanging lug.
11. The machine platform based tamping device of claim 10, wherein: the rotary driving assembly and the box body are provided with a rotary joint, the upper part and the lower part of the rotary joint form a revolute pair, the upper part of the rotary joint is fixedly connected with the hanging lugs, and the lower part of the rotary joint is connected with the box body.
12. The machine platform based tamping device of claim 11, wherein: the hydraulic motor of the slewing drive assembly receives external hydraulic power to drive the worm to rotate, and the worm enables the box body to rotate relative to the hanging lugs through the worm gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311110028.6A CN117188225A (en) | 2023-08-31 | 2023-08-31 | Tamping device based on dig quick-witted platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311110028.6A CN117188225A (en) | 2023-08-31 | 2023-08-31 | Tamping device based on dig quick-witted platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117188225A true CN117188225A (en) | 2023-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311110028.6A Pending CN117188225A (en) | 2023-08-31 | 2023-08-31 | Tamping device based on dig quick-witted platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117188225A (en) |
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2023
- 2023-08-31 CN CN202311110028.6A patent/CN117188225A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 213011 No. 99, Wuyi Road, Wujin District, Changzhou City, Jiangsu Province Applicant after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Applicant after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213011 No. 99, Wuyi Road, Wujin District, Changzhou City, Jiangsu Province Applicant before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Country or region before: China Applicant before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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| CB02 | Change of applicant information |