Tamping device for excavator platform and excavator provided with tamping device

Abstract

The utility model relates to a tamping device for an excavator platform and an excavator provided with the tamping device, and belongs to the technical field of tamping equipment. The problems that an existing small tamping device cannot control the downward inserting stroke, the tamping quality is poor, the operation efficiency is low, a power unit is shared with an excavator, the debugging difficulty is large, and the product adaptability is low are solved. The device comprises a box body, a rotation driving assembly, a downward insertion limiting assembly, a vibration part and a pickaxe arm part. The upper part of the box body is connected with a hanging lug serving as an excavator movable arm through a rotary driving assembly; the lower part of the box body is provided with a downward-inserting limiting assembly, and two sides of the lower part are respectively provided with the pickaxe arm components; a vibration part is installed in the middle of the box body, two tamping picks capable of crossing a steel rail to work are installed on the pick arm part, at least one side of each tamping pick can be turned over, and the power end of the vibration part is connected with the pick arm part so as to drive the tamping picks to vibrate and conduct clamping movement. The tamping device is provided with the downward insertion limiting assembly to limit the downward insertion stroke, and the flexibility and tamping quality of the tamping device are improved.

Description

Technical Field

[0001] The present 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 Art

[0002] The ballast beneath railway track sleepers will compact and sink over time, causing the track to drop. Additionally, after track sleepers and ballast cleaning are replaced, the newly laid ballast will become loose, so tamping is necessary to increase the density of the ballast and enhance the load-bearing capacity of the railway subgrade. Tamping is essential for track maintenance, new track laying, and after ballast cleaning.

[0003] Existing large tamping vehicles are not only limited in number but also lack flexibility. Therefore, track tamping operations in small areas and confined spaces primarily rely on small tamping tools, primarily handheld vibratory tampers and hand-pushed small hydraulic tampers. However, using small tamping tools is labor-intensive and inconvenient. In recent years, while sleeper-changing equipment developed using excavators as platforms has achieved widespread and significant success in railway maintenance, the development of tamping devices based on excavator platforms has lagged behind. In particular, there is still no tamping equipment suitable for track maintenance in small areas or confined spaces, such as turnouts, railway bridges, and tunnels.

[0004] A search reveals that Chinese patent application number 202022229487.4 discloses a tamping machine assembly and excavator, including a tamping machine base, a pick assembly, a shock absorber, a slewing mechanism, and a dipper arm mounting bracket. While this tamping device is based on an excavator platform and can be used within a limited range and operating space, it lacks control over the insertion stroke and, because only two pairs of pick arms can be inserted simultaneously, cannot complete tamping in some spatially restricted areas. Consequently, the flexibility, convenience, and efficiency of the tamping operation are limited.

[0005] In addition, the existing tamping device is configured on the excavator, and the tamping device needs to be adaptively connected to the power unit of the excavator before use. When tamping devices of different specifications are configured on the excavator, due to the different types and specifications of the components, the sizes of the connecting pipes and the operating parameters of the tamping device, pre-installation debugging is required to ensure the normal operation of the excavator and the tamping device. At the same time, the existing tamping device uses the excavator power unit for power drive, and the functional components of the excavator itself also use the same power unit, resulting in uneven power distribution when the excavator drives the tamping device and its own functional components at the same time, affecting the tamping quality. Therefore, a tamping device for an excavator platform is needed to solve the problems that the existing tamping device cannot control the downward insertion stroke, has low tamping flexibility, poor convenience and low tamping efficiency, and shares the power unit with the excavator, resulting in difficult debugging and low product adaptability. Utility Model Content

[0006] In view of the problems and shortcomings in the prior art, the present 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-mentioned objectives, the present application provides the following technical solutions: a device comprising a box body, a rotary drive assembly, a downward insertion limit assembly, a vibration component and a pick arm component; the upper part of the box body is connected to the excavator arm through the rotary drive assembly as a hanging ear; the lower part of the box body is installed with the downward insertion limit assembly, and the pick arm components are respectively provided on both sides of the lower part; the middle part of the box body is installed with a vibration component, and two tamping picks that can operate across the rails are installed on the pick arm component, and at least one of the two tamping picks is a flippable structure, and the power end of the vibration component is connected to the pick arm component to drive the tamping pick to vibrate and clamp.

[0008] Specifically, the lower insertion limit assembly includes a vertical guide tube and a positioning block; one end of the guide tube is fixedly installed on the lower part of the box body through a bent arm, and a positioning block corresponding to it is inserted into the guide tube. The guide tube and the positioning block are positioned by pinning positioning holes arranged at intervals, and the positioning block is located on the middle plane of the tamping pick on both sides of the pick arm body.

[0009] Specifically, a mounting surface for installing a lower insertion limit assembly is provided on the side wall on either side of the lower middle part of the box; the guide tube is provided with a vertical flange surface fixedly connected to the mounting surface, and the vertical flange surface is fixedly connected 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 on the bottom of the positioning block.

[0010] Specifically, the lower insertion limit assembly includes a distance measuring sensor; the distance measuring sensor is fixedly installed on the lower side of the lower middle of the box body, and is located on the middle plane of the tamping pick on both sides of the pick arm body, and the sensing end of the distance measuring sensor is arranged radially downward.

[0011] Specifically, the horizontal flange surface on the top of the box is fixedly connected to the lower end of the slewing support worm gear ring in the slewing drive assembly; the slewing drive assembly is provided with an inner ring forming 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 hanging ear.

[0012] Specifically, the rotary drive assembly and the center of the upper part of the box body are equipped with a rotary joint with the upper and lower parts constituting a rotating pair. The upper part of the rotary joint is fixedly connected to the hanging ear, and the lower part is connected to the box body; the rotary drive assembly is provided with a hydraulic motor and a worm, the power end of the hydraulic motor is connected to the worm, and the worm and the worm gear ring constitute a worm and worm gear transmission pair.

[0013] Specifically, the vibration component includes a driving motor, an eccentric shaft and two telescopic cylinders; the eccentric shaft is an eccentric crankshaft, and one end of which is connected to the power end of the driving motor; a coaxial support hole for supporting the eccentric crankshaft is provided in the middle of the box; the eccentric crankshaft forms a hinged pair with the inner ends of the two telescopic cylinders respectively, and the ends of the two telescopic cylinders away from the eccentric crankshaft are respectively hinged to the upper part of the pick arm body on both sides of the box.

[0014] 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 box body, and mounting arms are respectively installed at both ends, the tamping pick is installed on the mounting arm, and the power end of the vibration component is connected to the upper part of the pick arm body to drive the pick arm to vibrate and clamp; the distance between the tamping picks on both sides of the pick arm body is greater than the width of the rail.

[0015] Specifically, one of the mounting arms on both sides of the pick arm body of the pick arm assembly is a fixed arm, and the fixed arm and the pick arm body are an integrated structure, and the other mounting arm is a flip arm, the fixed arm is equipped with a fixed tamping pick, and the flip arm is equipped with a flip tamping pick; the upper part of the flip arm is hinged to the pick arm body, and the outer side is hinged to the telescopic end of the flip oil cylinder, and the upper part of the cylinder body of the flip oil cylinder is hinged to the pick arm body; the upper part of the flip arm is hinged to the middle part of the pick arm body through a flip axis, and the upper part of the cylinder body of the flip oil cylinder is hinged to the outer side of the pick arm body; the flip tamping pick constitutes an outer tamping pick, and its length direction is perpendicular to the axial direction of the flip axis. The pick arm body and the fixed arm of the pick arm assembly of the present application can be welded together or the pick arm body and the fixed arm can be directly cast into an integrated structure by casting.

[0016] The present application also provides an excavator equipped with the aforementioned tamping device for an excavator platform. The excavator is provided 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 component, a rotary component, and a traveling component. The second power unit includes a second power source and a second hydraulic drive assembly to drive the rotary drive assembly, vibrating component, and pick arm component of the tamping device. This arrangement utilizes the second power source to drive the second hydraulic drive assembly to operate the tamping device. The first and second power sources of the present application can be engines or batteries as known in the art, preferably engines, while the first and second hydraulic drive assemblies are hydraulic system components as known in the art, such as hydraulic pumps, hydraulic valve blocks, hydraulic oil tanks, and connecting pipelines. The operating principle is that the power source drives the hydraulic pump, converting it into hydraulic drive force to drive the corresponding movements of the excavator's functional components and the rotary drive assembly, vibrating component, and pick arm component of the tamping device.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The pick arm assembly of the present application has mounting arms installed on both sides of the pick arm body for mounting a tamping pick. The lower width of the pick arm body is set to be larger than the width of the rail, so that the spacing between the tamping picks on both sides is larger than the width of the rail. When it is necessary to cross a single rail to tamp the ballast on both sides of the single rail, only one tamping operation is required to complete the tamping of the ballast on both sides of the rail, thereby improving the tamping efficiency. At the same time, the tamping device of the present application is equipped with a lower insertion limit assembly to limit the lower insertion stroke, thereby improving the flexibility of the tamping device and the tamping quality, so as to meet the needs of line maintenance in a small range or small space.

[0019] 2. On the basis of the above, the downward insertion limit assembly of the present application has two modes: mechanical limit and sensor limit. The downward insertion limit assembly of the mechanical limit mode includes a guide tube and a positioning block. The positioning block is inserted in the guide tube, and the two are positioned by positioning holes arranged at intervals. The downward insertion stroke is adjusted by adjusting the length of the positioning block relative to the guide tube. The structure is simple and the production cost is low. The downward insertion limit assembly of the sensor limit mode is provided with a distance measuring sensor. By electrically connecting the distance measuring sensor to the control system of the excavator, the distance measuring sensor detects the downward insertion stroke and forms an electrical signal to feedback to the control system to control the boom of the excavator. The stroke control accuracy is high, but the production cost is slightly higher than that of the mechanical limit mode. It can be selectively configured according to user requirements, and the product has high adaptability.

[0020] 3. Building on the above, the pick arm assembly of the tamping device of this application includes a fixed arm and a tilting arm, with one mounting arm on either side of the pick arm body being a fixed arm and the other being a tilting arm. The fixed arm is mounted with a fixed tamping pick, while the tilting arm is mounted with a tilting tamping pick. This allows the tilting cylinder to be manipulated to position the tilting tamping pick parallel to the fixed tamping pick, enabling both arms to be lowered for combined tamping, or to position it in an upward position, enabling single-arm tamping with only the fixed tamping pick, thereby expanding the product's applicability.

[0021] 4. Based on the above, the present 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 a hydraulic drive assembly, the newly added power unit independently controls the rotation of the tamping device's housing, the vibration and clamping of the tamping pick, and the flipping of the pick arm under the control of the control system, while the excavator's own power unit is used to operate its own functional components to control the insertion and posture adjustment of the tamping device. To achieve pre-installation debugging, it is only necessary to adaptively connect the power unit to the excavator's control system and install the power unit as a whole. The installation and debugging are easy, the tamping device and excavator have sufficient overall movement, and the rational use of power is achieved to ensure tamping quality and improve railway operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Schematic diagram of the structure of the tamping device for the excavator platform of this embodiment 1;

[0023] Figure 2 This is a structural side view of the tamping device for the excavator platform of this embodiment 1;

[0024] Figure 3 This is a schematic structural diagram of an excavator equipped with a tamping device for an excavator platform according to this embodiment;

[0025] Figure 4 This is a schematic diagram of the working of the tamping device for the excavator platform of this embodiment performing tamping at different positions of the track;

[0026] Figure 5 This is a schematic diagram of the tamping operation of the excavator platform using the tamping device of Example 2;

[0027] Figure 6 This is a schematic structural diagram of a box body of the tamping device for an excavator platform according to this embodiment;

[0028] Figure 7 This is a schematic structural diagram of a rotary drive assembly of a tamping device for an excavator platform according to this embodiment;

[0029] Figure 8 This is a structural schematic diagram of the lower insertion limit assembly of the tamping device for the excavator platform of this embodiment 1. DETAILED DESCRIPTION

[0030] The present application will be further described below with reference to the accompanying drawings in the embodiments of the present application.

[0031] See also Figures 1-8, Example 1: This embodiment discloses a tamping device for an excavator platform, comprising a box body 9, a rotary drive assembly 3, a lower insertion limit assembly 6, a vibrating component 4 and a pick arm component 7; the upper part of the box body 9 is connected to the hanging ear 1 of the excavator arm through the rotary drive assembly 3; the lower part of the box body 9 is installed with the lower insertion limit assembly 6, and there are pick arm components 7 on both sides of the lower part; the middle part of the box body supports the eccentric shaft of the vibrating component, and the pick arm component includes a pick arm body 701, a mounting arm and a tamping pick; the middle part of the pick arm body 701 is hinged to the box body 9, and mounting arms are installed at both ends thereof, and the tamping pick is installed on the mounting arm, and the power end of the vibrating component 4 is connected to the upper part of the pick arm body to drive the pick arm to vibrate and clamp; the distance between the tamping picks on both sides of the pick arm body is greater than the width of the rail. The box body of this embodiment is an integral welded structure, and the horizontal flange surface 901 on its top is fixedly connected to the lower end of the slewing support worm gear ring 301 in the slewing drive assembly 3. The slewing drive assembly is provided with an inner ring 302 which forms a rotating pair with the worm gear ring. The upper end of the inner ring 302 is fixedly connected to the lower end of the hanging ear 1. Coaxial support holes 902 and 903 supporting the eccentric shaft of the vibration component 4 are provided in the middle of the box body, and hinge holes 904 and 905 are symmetrically provided on both sides of the lower part, which are respectively used to hinge the pick arm body of the pick arm component so that it can rotate around the hinge center.

[0032] The lower insertion limit assembly 6 of this embodiment includes a vertical guide tube 604 and a positioning block 605. One end of the guide tube 604 is fixedly mounted to the lower portion of the housing 9 via a curved arm 602. A matching positioning block is inserted into the guide tube. The guide tube and the positioning block are pinned together via two vertical rows of positioning holes arranged at intervals. By selecting the pinned connection, the lower insertion depth can be changed. The positioning block is located in the middle plane of the ramming pick on both sides of the main body of the pick arm. Mounting surfaces 906 for mounting the lower insertion limit assembly are provided on the side walls on either side of the lower middle portion of the housing 9 of this embodiment. 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 via a curved arm 602, and a rectangular tube 603 is connected between the curved arm and the guide tube. A removable cushion 606 is mounted on the bottom of the positioning block to provide a buffering effect during the lower insertion of the pick arm and its contact with the track, preventing rigid collisions.

[0033] The vibration component 4 of this embodiment includes a hydraulic motor 4-1 and two telescopic cylinders 5 and 8; the eccentric shaft is an eccentric crankshaft, and one end of which is connected to the power end of the hydraulic motor 4-1; the eccentric crankshaft forms a hinged pair with the inner ends of the two telescopic cylinders respectively, and the ends of the two telescopic cylinders away from the eccentric crankshaft are hinged to the upper part of the pick arm body of the pick arm component on both sides of the box body.

[0034] In this embodiment, a rotary joint 2, whose upper and lower parts form a rotational pair, is mounted in the center of the upper portion of the rotary drive assembly 3 and the housing 9. The upper portion of the rotary joint 2 is fixedly connected to the mounting lug 1, and the lower portion is connected to the housing 9. The rotary drive assembly 3 is equipped with a hydraulic motor 3-1 and a worm. The power end of the hydraulic motor is connected to the worm, which, together with the worm gear, forms a worm-gear transmission pair. The hydraulic motor 3-1 of the rotary drive assembly 3 can receive power from a second hydraulic drive assembly to rotate the worm, which in turn drives the housing relative to the mounting lug, thereby driving the lower pick arm assembly 7 to rotate as needed. More specifically, because the bottom of the lug 1 is fixedly connected to the inner ring of the slewing bearing in the slewing drive assembly 3, and the upper end surface of the housing 9 is fixedly connected to the worm gear ring of the slewing bearing in the slewing drive assembly 3, the hydraulic motor 3-1 of the slewing drive assembly 3 drives the housing 9 and its accessories through the worm gear pair, enabling 360-degree rotation, thereby flexibly achieving ballast tamping at any position. A slewing joint 2, located at the slewing center of the slewing drive assembly 3, prevents the oil pipe passing through it from becoming entangled during rotation.

[0035] One of the mounting arms on both sides of the pick arm main body 701 of the pick arm component 7 of this embodiment is a fixed arm 707, and the fixed arm is welded to the pick arm main body as a whole, and the other mounting arm is a flip arm 704, the fixed arm 707 is installed with a fixed tamping pick 706, and the flip arm 704 is installed with a flip tamping pick 705; the upper part of the flip arm 704 is hinged to the pick arm main body 701, and the outer side is hinged to the telescopic end of the flip cylinder 702, the upper part of the flip arm 704 is hinged to the middle part of the pick arm main body through the flip shaft 703, and the upper part of the cylinder body of the flip cylinder is hinged to the outer side of the pick arm main body; the flip tamping pick 705 constitutes an outer tamping pick, and its length direction is perpendicular to the axial direction of the flip shaft.

[0036] In addition, this embodiment also provides an excavator J equipped with the aforementioned tamping device for the excavator platform. 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 functional components include boom components Y and B, a rotating component and a walking component; the second power unit D includes a second engine and a second hydraulic drive assembly to drive the rotating drive component, the vibration component and the pick arm component of the tamping device.

[0037] Example 2: The main difference between Example 2 and Example 1 is that the lower insertion limit assembly of Example 2 includes a ranging sensor 6'; the ranging sensor of this embodiment is a laser ranging sensor; the ranging sensor is fixedly installed on the lower side of the lower middle of the box body, and is located on the middle plane of the tamping pick on both sides of the pick arm body, and the sensing end of the ranging sensor is arranged radially downward.

[0038] Working Principle: This embodiment provides a tamping device for an excavator platform and an excavator equipped with the tamping device. When in use, the tamping device is hinged to the boom B of the excavator J via a lug. Its working principle is essentially the same as that of the prior art. The excavator drives the tamping device along the track, and the booms B and Y are used to adjust the tamping device's operating position and provide tamping force. When tamping the ballast between the rails on both sides, the tamping principle is similar to that of the prior art. The eccentric crankshaft of the vibrating component is driven by a hydraulic motor 4-1 to rotate the eccentric crankshaft, which in turn drives the two telescopic cylinders hinged to the eccentric crankshaft to vibrate. The vibration is then transmitted to the corresponding pick arm components, causing the tamping pick to tamp the ballast stones. Simultaneously, the extension of the telescopic cylinder drives the tamping picks on both sides to clamp together, achieving clamping and tamping of the ballast.

[0039] When it is necessary to perform straddling tamping on both sides of a single-side rail, it should be noted that there are two operating positions, such as Figure 4 As shown, in position 1, since the width dimension of the pick arm body of the pick arm component is greater than the width dimension of the rail, the distance dimension between the two tamping picks of the single-side pick arm component can span the rail. At this time, double-arm insertion and joint tamping can be adopted, which will not be repeated here. As in position 2, since it is at the switch, there are two rails adjacent to the placement area, which will cause the width of the rail here to increase, exceeding the width of the pick arm body of this embodiment. At this time, a single-arm insertion and tamping operation method can be adopted. Specifically, the flip arm is driven to rotate around the flip axis by the flip cylinder, so that the flip tamping pick is in a tilted position, and single-arm tamping with only a fixed tamping pick is achieved. When the tamping device of this embodiment is inserted and tamped, the positioning block of the insertion limit assembly is pressed against the rail GG or the laser ranging sensor senses the rail GG to control the insertion stroke to adjust the insertion stroke, which not only makes it convenient to get on and off the road, but also greatly improves the adaptability and flexibility, and can reduce the labor intensity of personnel.

[0040] The above describes the implementation methods of the present application in detail in conjunction with the embodiments, but the present application is not limited to the above implementation methods. For ordinary technicians in this technical field, after knowing the contents recorded in the present application, they can make several equivalent transformations and substitutions without departing from the principles of the present application. These equivalent transformations and substitutions should also be regarded as belonging to the scope of protection of the present application.

Claims

1. A tamping device for an excavator platform, comprising a housing, a rotary drive assembly, a lower insertion limit assembly, a vibrating component, and a pick arm assembly; the upper portion of the housing is connected to the excavator arm via the rotary drive assembly as a hanging ear; the lower portion of the housing is mounted with the lower insertion limit assembly, and the pick arm assembly is mounted on both sides of the lower portion; the vibrating component is mounted in the middle of the housing, characterized in that: The pick arm component is equipped with two tamping picks that can operate across the rails, and at least one of the two tamping picks is a flippable structure. The power end of the vibration component is connected to the pick arm component to drive the tamping pick to vibrate and clamp.

2. A tamping device for an excavator platform according to claim 1, characterized in that: The lower insertion limit assembly includes a vertical guide tube and a positioning block; one end of the guide tube is fixedly installed on the lower part of the box body through a bent arm, and a positioning block corresponding to it is inserted into the guide tube. The guide tube and the positioning block are pinned and positioned by positioning holes arranged at intervals, and the positioning block is located on the middle plane of the tamping pick on both sides of the pick arm body.

3. The tamping device for an excavator platform according to claim 2, characterized in that: A mounting surface for mounting the lower insertion limit assembly is provided on the side wall on either side of the middle of the lower part of the box body; the guide tube is provided with a vertical flange surface fixedly connected to the mounting surface, and the vertical flange surface is fixedly connected 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 on the bottom of the positioning block.

4. The tamping device for an excavator platform according to claim 1, characterized in that: The lower insertion limit assembly includes a distance measuring sensor; the distance measuring sensor is fixedly installed on the lower side of the lower middle of the box body, and 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.

5. The tamping device for an excavator platform according to claim 1, characterized in that: The horizontal flange surface on the top of the box body is fixedly connected to the lower end of the slewing support worm gear ring in the slewing drive assembly; the slewing drive assembly is provided with an inner ring forming 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 hanging ear.

6. The tamping device for an excavator platform according to claim 5, characterized in that: The rotary drive assembly and the center of the upper part of the box body are equipped with a rotary joint with the upper and lower parts forming a rotating pair. The upper part of the rotary joint is fixedly connected to the hanging ear, and the lower part is connected to the box body; the rotary drive assembly is provided with a hydraulic motor and a worm, the power end of the hydraulic motor is connected to the worm, and the worm and the worm gear ring form a worm and worm gear transmission pair.

7. The tamping device for an excavator platform according to claim 1, characterized in that: The vibration component includes a driving motor, an eccentric shaft and two telescopic cylinders; the eccentric shaft is an eccentric crankshaft, and one end of which is connected to the power end of the driving motor; a coaxial support hole for supporting the eccentric crankshaft is provided in the middle of the box body; the eccentric crankshaft respectively forms an articulated pair with the inner ends of the two telescopic cylinders, 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 box body.

8. The 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 box body, and mounting arms are respectively installed at both ends of the pick arm, the tamping pick is installed on the mounting arm, and the power end of the vibration component is connected to the upper part of the pick arm body to drive the pick arm to vibrate and clamp; the distance between the tamping picks on both sides of the pick arm body is greater than the width of the rail.

9. The tamping device for an excavator platform according to claim 8, characterized in that: One of the mounting arms on both sides of the pick arm main body of the pick arm component is a fixed arm, and the fixed arm and the pick arm main body are an integrated structure, and the other mounting arm is a flip arm, the fixed arm is equipped with a fixed tamping pick, and the flip arm is equipped with a flip tamping pick; the upper part of the flip arm is hinged to the pick arm main body, and the outer side is hinged to the telescopic end of the flip cylinder, and the upper part of the cylinder body of the flip cylinder is hinged to the pick arm main body; the upper part of the flip arm is hinged to the middle part of the pick arm main body through a flip shaft, and the upper part of the cylinder body of the flip cylinder is hinged to the outer side of the pick arm main body; the flip tamping pick constitutes an outer tamping pick, and its length direction is perpendicular to the axial direction of the flip shaft.

10. An excavator equipped with a tamping device for an excavator platform according to any one of claims 1 to 9, characterized in that: The excavator is provided 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 functional components of the excavator; the functional components include a boom component, a rotating component and a walking component; the second power unit includes a second power source and a second hydraulic drive assembly to drive the rotating drive component, the vibration component and the pick arm component of the tamping device.

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