Tamping device for excavator platform, and excavator equipped with tamping device

Abstract

A tamping device for an excavator platform, and an excavator equipped with the tamping device. The tamping device comprises a housing (9), a rotary drive assembly (3), a vibration component (4) and pick arm components (7), wherein by means of the rotary drive assembly (3), the upper portion of the housing (9) is connected to a lug (1) that serves as an excavator boom; the pick arm components (7) are respectively provided on two sides of the lower portion of the housing (9); the vibration component (4) is mounted in the middle of the housing (9); two tamping picks capable of operating astride a rail are mounted on each of the pick arm components (7), and one of the two tamping picks is of a reversible structure; and a power end of the vibration component (4) is connected to the pick arm components (7), so as to drive the tamping picks to perform vibration and clamping.

Description

A tamping device for an excavator platform and an excavator equipped with the tamping device. Cross-references to related applications

[0001] This application claims priority to Chinese patent application filed on October 29, 2024, application number 202422617066.7, entitled "A tamping device for an excavator platform and an excavator equipped with the tamping device". Technical Field

[0002] This application relates to a tamping device for an excavator platform and an excavator equipped with the tamping device, belonging to the technical field of tamping equipment. Background Technology

[0003] Over time, the ballast under railway sleepers will compact and sink, causing the track to drop. In addition, after the replacement of railway sleepers and ballast, the newly laid ballast will also become loose. Therefore, tamping is necessary to increase the density of the ballast and enhance the load-bearing capacity of the railway subgrade. Tamping is an essential operation for railway line maintenance, new track laying, and after ballast cleaning.

[0004] Existing large-scale tamping machines are not only limited in number but also lack flexibility. Therefore, tamping operations in small areas and confined spaces mainly rely on small tamping tools, primarily handheld vibratory tampers and hand-push small hydraulic tampers. However, using small tamping tools is labor-intensive and inconvenient to operate. In recent years, although sleeper replacement equipment developed using excavators as platforms has been widely used and achieved significant results in railway maintenance, the development of tamping devices for excavator platforms has lagged behind, especially the lack of tamping facilities suitable for maintenance of tracks in small areas or confined spaces such as turnouts and railway bridges and tunnels.

[0005] A search reveals that Chinese patent document application number 202022229487.4 discloses a tamping machine assembly and an excavator, including a tamping machine base, a pick assembly, a shock absorber, a slewing mechanism, and a stick mounting base. While this tamping device is developed based on an excavator platform and can be used in a limited area with limited working space, this structure only allows two pairs of pick arms to be inserted simultaneously. In some spatially restricted areas, tamping cannot be completed, thus limiting the flexibility, convenience, and efficiency of the tamping operation. Summary of the Invention

[0006] In view of the problems and deficiencies in the prior art, this application provides a tamping device for an excavator platform and an excavator equipped with the tamping device to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this application provides the following technical solution: a tamping device for an excavator platform, comprising a housing, a rotary drive assembly, a vibration component, and a pick arm assembly; the upper part of the housing is connected to the rotary drive assembly as a lug for the excavator boom; the pick arm assembly is located on both sides of the lower part of the housing; a vibration component is installed in the middle of the housing, and two tamping picks capable of operating across steel rails are installed on the pick arm assembly, one of the two tamping picks being a flip-up structure; the power end of the vibration component is connected to the pick arm assembly to drive the tamping pick to vibrate and clamp.

[0008] Specifically, the tamping device for the excavator platform also includes a lower insertion limiting component installed at the bottom of the housing.

[0009] Specifically, the lower insertion limiting component includes a vertical guide tube and a positioning block; one end of the guide tube is fixedly installed at the lower part of the box by a bent arm, and a matching positioning block is inserted into the guide tube. The guide tube and the positioning block are pin-connected and positioned by opening positioning holes arranged at intervals, and the positioning block is located in the middle plane of the tamping pick on both sides of the tamping pick body.

[0010] Specifically, a mounting surface for installing the lower insertion limiting component is provided on the side wall of either side of the lower middle part of the housing; the guide tube is provided with a vertical flange surface fixed to the mounting surface, the vertical flange surface is fixed to the guide tube through a bent arm, and a rectangular tube is connected between the bent arm and the guide tube; a buffer pad is detachably installed at the bottom of the positioning block.

[0011] Specifically, the lower limit assembly includes a distance sensor; the distance sensor is fixedly installed on the lower side of the middle part of the box, and it is located on the middle plane of the tamping pick on both sides of the pick arm body, with the sensing end of the distance sensor facing downward in the radial direction.

[0012] Specifically, the horizontal flange face at the top of the housing is fixedly connected to the lower end of the slewing bearing worm gear ring in the slewing drive assembly; the slewing drive assembly is provided with an inner ring that forms a rotating pair with the worm gear ring, and the upper end of the inner ring is fixedly connected to the lower end of the lug.

[0013] Specifically, the rotary drive assembly and the upper center of the housing are equipped with a rotary joint whose upper and lower parts form a rotating pair. The upper part of the rotary joint is fixed to the lug, and the lower part is connected to the housing. The rotary drive assembly is equipped with a hydraulic motor and a worm gear. The power end of the hydraulic motor is connected to the worm gear, and the worm gear and the worm ring form a worm gear transmission pair.

[0014] Specifically, the vibration components include a drive motor, an eccentric shaft, and two telescopic hydraulic cylinders; the eccentric shaft is an eccentric crankshaft, and one end of it is connected to the power end of the drive motor; the middle of the housing is provided with a coaxial support hole to support the eccentric crankshaft; the eccentric crankshaft and the inner ends of the two telescopic hydraulic cylinders respectively form a hinge pair, and the ends of the two telescopic hydraulic cylinders away from the eccentric crankshaft are respectively hinged to the upper part of the main body of the pick arm on both sides of the housing.

[0015] Specifically, the pick arm component includes a pick arm body, a mounting arm, and a tamping pick; the middle part of the pick arm body is hinged to the housing, and mounting arms are respectively installed at both ends of the body. The tamping pick is installed on the mounting arm. The power end of the vibration component is connected to the upper part of the pick arm body to drive the tamping pick to vibrate and clamp; the width between the tamping picks on both sides of the pick arm body is greater than the width of the rail.

[0016] Specifically, in the pick arm assembly, one of the mounting arms on both sides of the pick arm body is a fixed arm, which is an integral structure with the pick arm body. The other mounting arm is a tilting arm. The fixed arm is equipped with a fixed tamping pick, and the tilting arm is equipped with a tilting tamping pick. The upper part of the tilting arm is hinged to the pick arm body, and its outer side is hinged to the telescopic end of the tilting cylinder. The upper part of the tilting cylinder is hinged to the pick arm body. The upper part of the tilting arm is hinged to the middle part of the pick arm body via a tilting shaft, and the upper part of the tilting cylinder is hinged to the outer side of the pick arm body. The tilting tamping pick constitutes the outer tamping pick, and its length direction is perpendicular to the axis of the tilting shaft. The pick arm body and the fixed arm of the pick arm assembly of this application can be welded together or cast directly into an integral structure.

[0017] This application also provides an excavator equipped with the aforementioned tamping device for an excavator platform.

[0018] Specifically, the excavator is equipped with a first power unit and a second power unit. The first power unit includes a first power source and a first hydraulic drive assembly to drive the excavator's functional components, including a boom assembly, a slewing assembly, and a traveling assembly. The second power unit includes a second power source and a second hydraulic drive assembly to drive the slewing drive assembly, vibrating assembly, and tamping arm assembly of the tamping device. This configuration uses the second power source to drive the second hydraulic drive assembly, which in turn drives the tamping device. The first and second power sources can be selected from existing technologies such as engines or batteries, preferably engines. The first and second hydraulic drive assemblies are existing hydraulic system components, such as hydraulic pumps, hydraulic valve groups, hydraulic tanks, and connecting pipelines. Its working principle is that the power source drives the hydraulic pump, which converts the hydraulic force into hydraulic driving force to drive the corresponding actions of the excavator's functional components and the tamping device's slewing drive assembly, vibrating assembly, and tamping arm assembly.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] 1. In the tamping device of this application, one of the mounting arms on both sides of the tamping arm body is a fixed arm, and the other mounting arm is a tilting arm. The fixed arm is equipped with a fixed tamping pick, and the tilting arm is equipped with a tilting tamping pick. This allows the tilting tamping pick to be positioned parallel to the fixed tamping pick, enabling both arms to be inserted downwards for tamping, or to be in a tilted position, enabling single-arm tamping with only the fixed tamping pick, thus improving the applicability of the product.

[0021] 2. Based on the foregoing, the tamping device of this application is equipped with a lower insertion limit component to limit the lower insertion stroke, avoid damage to the track, improve the flexibility and tamping quality of the tamping device, and meet the track maintenance needs of small areas or small spaces.

[0022] The lower insertion limit assembly has two methods: mechanical limit and sensor limit. The mechanical limit method includes a guide tube and a positioning block. The positioning block is inserted into the guide tube, and the two are positioned by a pin connection through spaced positioning holes. The lower insertion stroke is adjusted by adjusting the length of the positioning block extending relative to the guide tube. This method is simple in structure and low in manufacturing cost. The sensor limit method includes a distance sensor. By electrically connecting the distance sensor to the excavator's control system, the distance sensor detects the lower insertion stroke and generates an electrical signal that is fed back to the control system to control the excavator's boom. This method offers high stroke control accuracy, but the manufacturing cost is slightly higher than the mechanical limit method. Both methods can be selectively configured according to user requirements, resulting in high product adaptability.

[0023] 3. Based on the foregoing, the pick arm component of this application has mounting arms on both sides of the pick arm body for mounting tamping picks. The lower width of the pick arm body is set to be greater than the width of the rail, so that the width of the tamping picks on both sides is greater than the width of the rail. This allows the tamping of the ballast on both sides of the rail to be completed in a single tamping operation when it is necessary to cross the rail to tamp the ballast on both sides of the rail, thereby improving tamping efficiency.

[0024] 4. Based on the foregoing, this application provides an excavator equipped with the aforementioned tamping device for an excavator platform. By adding a power unit to the excavator, including a new power source and hydraulic drive components, the new power unit, under the control of the control system, independently controls the rotation of the tamping device's housing, the vibration and clamping of the tamping pick, and the tilting action of the pick arm. The excavator's own power unit is used for the operation of its own functional components to control the insertion and attitude adjustment actions of the tamping device. This allows for pre-installation debugging, requiring only compatibility connection between the power unit and the excavator's control system, and overall installation of the power unit. The installation and debugging difficulty is low, and the tamping device and the excavator as a whole have ample power, achieving rational utilization of power to ensure tamping quality and improve railway operation safety. Attached Figure Description

[0025] Figure 1 is a structural schematic diagram of a tamping device for an excavator platform according to one embodiment;

[0026] Figure 2 is a structural side view of a tamping device for an excavator platform according to an embodiment;

[0027] Figure 3 is a structural schematic diagram of an excavator equipped with a tamping device for an excavator platform according to one embodiment;

[0028] Figure 4 is a schematic diagram of the tamping device for an excavator platform performing tamping at different positions on the track according to an embodiment.

[0029] Figure 5 is a schematic diagram of the tamping operation of an excavator platform using a tamping device according to one embodiment.

[0030] Figure 6 is a structural schematic diagram of the housing of a tamping device for an excavator platform according to one embodiment;

[0031] Figure 7 is a schematic diagram of the rotary drive assembly of a tamping device for an excavator platform according to one embodiment;

[0032] Figure 8 is a structural schematic diagram of the lower insertion limiting component of a tamping device for an excavator platform according to one embodiment. Detailed Implementation

[0033] The present application will now be further described in conjunction with the accompanying drawings.

[0034] Please refer to Figures 1-8, which disclose a tamping device for an excavator platform, including a housing 9, a rotary drive assembly 3, a vibration component 4, and a pick arm component 7. The upper part of the housing 9 is connected to the rotary drive assembly 3 as a lug for the excavator boom; the lower two sides of the housing 9 are respectively equipped with pick arm components 7; the vibration component 4 is installed in the middle of the housing 9, and two tamping picks that can cross the rails are installed on the pick arm component 7, one of which is a flip-up structure. The power end of the vibration component 4 is connected to the pick arm component 7 to drive the tamping pick to vibrate and clamp.

[0035] Preferably, the tamping device for the excavator platform may further include a lower insertion limiting component 6 installed at the lower part of the housing 9.

[0036] Specifically, the upper part of the housing 9 is connected to the lug 1, which serves as the boom of the excavator, via the rotary drive assembly 3.

[0037] The eccentric shaft of the vibration component 4 is supported in the middle of the housing 9. The pick arm component 7 includes a pick arm body 701, a mounting arm, and a tamping pick. The middle of the pick arm body 701 is hinged to the housing 9, and mounting arms are installed at both ends of the body. The tamping pick is installed on the mounting arm. The power end of the vibration component 4 is connected to the upper part of the pick arm body 701 to drive the tamping pick to vibrate and clamp. The width between the tamping picks on both sides of the pick arm body 701 is greater than the width of the rail.

[0038] Specifically, the housing 9 is an integral welded structure. The horizontal flange surface 901 at the top is fixedly connected to the lower end of the slewing bearing worm gear ring 301 in the slewing drive assembly 3. The slewing drive assembly 3 is provided with an inner ring 302 that forms a rotating pair with the worm gear ring 301. The upper end of the inner ring 302 is fixedly connected to the lower end of the lug 1. The housing 9 is provided with coaxial support holes 902 and 903 in the middle for supporting the eccentric shaft of the vibration component 4. The lower two sides are symmetrically provided with hinge holes 904 and 905, which are used to hinge the main body 701 of the pick arm component 7, so that it can rotate around the hinge center.

[0039] The lower insertion limiting component 6 includes a vertical guide tube 604 and a positioning block 605. One end of the guide tube 604 is fixedly installed to the lower part of the housing 9 via a bent arm 602. The positioning block 605, which is compatible with the guide tube 604, is inserted into the guide tube 604. The guide tube 604 and the positioning block 605 are positioned by a pin connection through two vertically arranged positioning holes. By selecting the pin connection, the lower insertion depth can be changed. The positioning block 605 is located on the middle plane of the tamping pick on both sides of the tamping pick body 701.

[0040] A mounting surface 906 for installing the lower insertion limiting component 6 is provided on the side wall of the lower middle part of the housing 9; the guide tube 604 is provided with a vertical flange surface 601 fixedly connected to the mounting surface 906, the vertical flange surface 601 is fixedly connected to the guide tube 604 through a bent arm 602, and a rectangular tube 603 is connected between the bent arm 602 and the guide tube 604; a buffer pad 606 is detachably installed at the bottom of the positioning block 605 to buffer the impact when the pick arm is inserted into the rail and comes into contact with it, so as to avoid rigid collision.

[0041] The vibration component 4 includes a hydraulic motor 4-1 and two telescopic cylinders 5 and 8; the eccentric shaft is an eccentric crankshaft, and one end of it is connected to the power end of the hydraulic motor 4-1; the eccentric crankshaft forms a hinge pair with the inner ends of the two telescopic cylinders 5 and 8 respectively, and the ends of the two telescopic cylinders 5 and 8 away from the eccentric crankshaft are respectively hinged to the upper part of the pick arm body 701 of the pick arm component 7 on both sides of the housing 9.

[0042] The rotary drive assembly 3 and the housing 9 are equipped with a rotary joint 2 at the upper center, which forms a rotating pair with its upper and lower parts. The upper part of the rotary joint 2 is fixedly connected to the lug 1, and the lower part is connected to the housing 9. The rotary drive assembly 3 is equipped with a hydraulic motor 3-1 and a worm gear. The power end of the hydraulic motor 3-1 is connected to the worm gear, and the worm gear and the worm ring 301 form a worm gear transmission pair. The hydraulic motor 3-1 of the rotary drive assembly 3 can be driven by the power of the second hydraulic drive assembly to drive the worm gear to rotate, which in turn drives the worm ring 301 to rotate the housing 9 relative to the lug 1, thereby driving the lower pick arm component 7 to rotate as needed. More specifically, since the bottom of the lug 1 is fixedly connected to the inner ring 302 of the slewing bearing in the slewing drive assembly 3, and the upper end face of the housing 9 is fixedly connected to the worm gear ring 301 of the slewing drive assembly 3, the housing 9 and its accessories can rotate 360° under the drive of the hydraulic motor 3-1 of the slewing drive assembly 3, through the worm gear pair transmission, thereby flexibly realizing ballast tamping at any position. The slewing joint 2 arranged at the rotation center of the slewing drive assembly 3 ensures that the oil pipe passing through it does not become entangled during the rotation process.

[0043] One of the mounting arms on both sides of the pick arm body 701 of the pick arm component 7 is a fixed arm 707, which is welded to the pick arm body 701 as a whole. The other mounting arm is a flipping arm 704. The fixed arm 707 is equipped with a fixed tamping pick 706, and the flipping arm 704 is equipped with a flipping tamping pick 705. The upper part of the flipping arm 704 is hinged to the pick arm body 701, and the outer side is hinged to the telescopic end of the flipping cylinder 702. The upper part of the flipping arm 704 is hinged to the middle part of the pick arm body 701 through a flipping shaft 703. The upper part of the cylinder body of the flipping cylinder 702 is hinged to the outer side of the pick arm body 701. The flipping tamping pick 705 constitutes an outer tamping pick, and its length direction is perpendicular to the axial direction of the flipping shaft 703.

[0044] In addition, an excavator J equipped with the aforementioned tamping device for an excavator platform is also provided. The tamping device and the excavator share a power unit for their respective functional components. The functional components of the excavator include boom components Y and B, a slewing component and a traveling component. The functional components of the tamping device include a slewing drive assembly 3, a vibration component 4 and a pick arm component 7.

[0045] Preferably, the excavator is provided with a first power unit and a second power unit D. The first power unit includes a first engine and a first hydraulic drive assembly to drive the functional components of the excavator; the second power unit D includes a second engine and a second hydraulic drive assembly to drive the functional components of the tamping device.

[0046] Furthermore, according to one embodiment of the present invention, the lower insertion limiting assembly includes a distance sensor 6', which is a laser distance sensor; the distance sensor is fixedly installed on the lower middle side of the housing 9, and is located on the middle plane of the tamping pick on both sides of the pick arm body 701, and the sensing end of the distance sensor 6' is arranged radially downward.

[0047] Working Principle: The provided excavator platform tamping device and the excavator equipped with the tamping device are used in the following manner. The tamping device is hinged to the boom B of the excavator J via the lug 1. Its working principle is basically the same as existing technology. The excavator drives the tamping device to move along the track, and the boom B and Y adjust the working position of the tamping device and provide tamping downward force. When tamping the ballast between the two rails, the tamping principle is similar to existing technology. The eccentric crankshaft of the vibrating component 4 is driven by a hydraulic motor 4-1 to rotate the eccentric crankshaft, causing two telescopic cylinders hinged to the eccentric crankshaft to vibrate. This vibration is transmitted to the corresponding pick arm components, causing the picks to tamp the ballast stones. Simultaneously, the extension of the telescopic cylinders causes the picks on both sides to clamp each other, achieving clamping and tamping of the ballast.

[0048] When performing cross-track tamping on both sides of a single-sided rail, it's important to note two working positions, as shown in Figure 4. In position 1, because the width of the pick arm body 701 of the pick arm component is greater than the width of the rail, the width between the two tamping picks of the single-sided pick arm component can cross the rail. In this case, double-arm tamping can be used, which will not be elaborated further. However, in position 2, due to the switch location, two rails are placed close together, causing the rail width to increase and exceed the width of the pick arm body. In this case, a single-arm tamping operation can be used. Specifically, a tilting cylinder drives the tilting arm to rotate around the tilting shaft, causing the tilting tamping pick to be in the tilted position, achieving single-arm tamping with only the fixed tamping pick. Furthermore, during tamping, the tamping device controls the tamping stroke by having the positioning block of the tamping limit component 6 abut against the rail GG or by using a laser rangefinder sensor to sense the rail GG. This adjustment not only facilitates entry and exit from the track but also greatly improves adaptability and flexibility, reducing the labor intensity of personnel.

[0049] The embodiments of this application have been described in detail above. However, this application is not limited to the above embodiments. For those skilled in the art, after learning the contents recorded in this application, several equivalent changes and substitutions can be made without departing from the principle of this application. These equivalent changes and substitutions should also be considered to fall within the protection scope of this application.

Claims

1. A tamping device for an excavator platform, characterized in that, The device includes a housing, a rotary drive assembly, a vibration component, and a pick arm assembly. The upper part of the housing is connected to the rotary drive assembly as a lug for the excavator's boom. The pick arm assembly is located on both sides of the lower part of the housing. The vibration component is installed in the middle of the housing. Two tamping picks capable of operating across rails are mounted on the pick arm assembly, and one of the tamping picks is a flip-up structure. The power end of the vibration component is connected to the pick arm assembly to drive the tamping pick to vibrate and clamp.

2. The tamping device for an excavator platform according to claim 1, characterized in that, It also includes a lower insertion limiting component installed at the bottom of the housing.

3. The tamping device for an excavator platform according to claim 2, characterized in that: The lower insertion limiting component includes a vertical guide tube and a positioning block; one end of the guide tube is fixedly installed at the lower part of the box body by a bent arm, and a matching positioning block is inserted into the guide tube. The guide tube and the positioning block are pin-connected and positioned by opening positioning holes arranged at intervals, and the positioning block is located in the middle plane of the tamping pick on both sides of the tamping pick body.

4. A tamping device for an excavator platform according to claim 3, characterized in that: The lower middle side wall of the housing is provided with a mounting surface for installing the lower insertion limiting component; the guide tube is provided with a vertical flange surface fixedly connected to the mounting surface, the vertical flange surface is fixedly connected to the guide tube through the bent arm, and a rectangular tube is connected between the bent arm and the guide tube; a buffer pad is detachably installed at the bottom of the positioning block.

5. A tamping device for an excavator platform according to claim 2, characterized in that: The lower insertion limiting component includes a distance measuring sensor; the distance measuring sensor is fixedly installed on the lower side of the lower middle part of the box body, and it is located in the middle plane of the two tamping picks of the pick arm component, and the sensing end of the distance measuring sensor is arranged radially downward.

6. A tamping device for an excavator platform according to claim 1, characterized in that: The horizontal flange surface at the top of the housing is fixedly connected to the lower end of the slewing bearing worm gear ring in the slewing drive assembly; the slewing drive assembly is provided with an inner ring that forms a rotating pair with the worm gear ring, and the upper end of the inner ring is fixedly connected to the lower end of the lug.

7. A tamping device for an excavator platform according to claim 6, characterized in that: The rotary drive assembly and the upper center of the housing are equipped with a rotary joint whose upper and lower parts form a rotating pair. The upper part of the rotary joint is fixed to the lug, and the lower part is connected to the housing. The rotary drive assembly is equipped with a hydraulic motor and a worm gear. The power end of the hydraulic motor is connected to the worm gear. The worm gear and the worm ring form a worm gear transmission pair.

8. A tamping device for an excavator platform according to claim 1, characterized in that: The vibration component includes a drive motor, an eccentric shaft, and two telescopic cylinders; the eccentric shaft is an eccentric crankshaft, and one end of it is connected to the power end of the drive motor; the middle of the housing is provided with a coaxial support hole for supporting the eccentric crankshaft; the eccentric crankshaft and the inner ends of the two telescopic cylinders respectively form a hinge pair, and the ends of the two telescopic cylinders away from the eccentric crankshaft are respectively hinged to the upper parts of the pick arm components on both sides of the housing.

9. A tamping device for an excavator platform according to claim 1, characterized in that: The pick arm component includes a pick arm body, a mounting arm, and a tamping pick; the middle part of the pick arm body is hinged to the housing, and the mounting arms are respectively installed at both ends of the body. The tamping pick is installed on the mounting arm. The power end of the vibration component is connected to the upper part of the pick arm body to drive the tamping pick to vibrate and clamp; the width between the tamping picks on both sides of the pick arm body is greater than the width of the rail.

10. A tamping device for an excavator platform according to claim 9, characterized in that: One of the mounting arms on both sides of the pick arm body of the pick arm component is a fixed arm, and the fixed arm is an integral structure with the pick arm body. The other mounting arm is a flipping arm. The fixed arm is equipped with a fixed tamping pick, and the flipping arm is equipped with a flipping tamping pick. The upper part of the flipping arm is hinged to the pick arm body, and the outer side is hinged to the telescopic end of the flipping cylinder. The upper part of the cylinder body of the flipping cylinder is hinged to the pick arm body. The upper part of the flipping arm is hinged to the middle part of the pick arm body through a flipping shaft. The upper part of the cylinder body of the flipping cylinder is hinged to the outer side of the pick arm body. The flipping tamping pick constitutes an outer tamping pick, and its length direction is perpendicular to the axial direction of the flipping shaft.

11. An excavator, comprising a tamping device for an excavator platform as described in any one of claims 1-10.

12. The excavator according to claim 11, characterized in that: The excavator is equipped with a first power unit and a second power unit. The first power unit includes a first power source and a first hydraulic drive assembly to drive the excavator's functional components, including a boom assembly, a slewing assembly, and a traveling assembly. The second power unit includes a second power source and a second hydraulic drive assembly to drive the slewing drive assembly, the vibrating assembly, and the pick arm assembly of the tamping device.

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