CN210657823U - Tamping device with eccentric clamping mechanism - Google Patents

Abstract

The tamping device comprises a vibration excitation device, an opening and closing driving device, a clamping device and an opening and closing driving device which is connected with the clamping device, wherein the vibration excitation device is arranged at the joint part of the opening and closing driving device and the clamping device, the vibration excitation device adopts an eccentric shaft structure, and the plane of the axis of the eccentric shaft is vertical to the motion plane of the clamping device. Compared with the prior art, the tamping device with the eccentric clamping mechanism has the following advantages and effects: the tamping tool is used for tamping operation of ballast railway track beds, and has a simple and reliable structure and high engineering application value.

Description

Tamping device with eccentric clamping mechanism

Technical Field

The utility model relates to a tamping unit belongs to railway maintenance mechanical design and manufacturing technical field.

Background

The tamping operation is one of main works for maintaining the ballast railway track bed, the stability of the track bed can be effectively improved, and the running safety of a train is ensured. At present, in the railway maintenance machinery industry, the tamping device widely used is single in structural type, and part of the tamping devices are too complex in structure, so that the working reliability is low, and the engineering application situation is not good. There is a need to develop a tamping device with simple and reliable structure and high engineering application value.

PCT patent application No. PCT/EP2009/002447 discloses a tamping apparatus for tamping a sleeper section, comprising two inner tamping units and two outer tamping units, each outer tamping unit being pivotable relative to a guide block about a longitudinally extending pivot pin of the tamping apparatus and being connected to a rotary drive, the guide block being movably connected to a transverse guide and a transverse sliding drive. The tamping tool of the external tamping unit is thus arranged at a maximum distance from the center of the tamping apparatus for tamping the track's branch rails, which is known from the patent, but which is complicated in its structure and in a poor engineering situation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tamping device that contains eccentric fixture and corresponding tamping method for there is tiny fragments of stone, coal, etc. railway ballast bed tamping operation, simple structure is reliable, and engineering application is worth highly.

The utility model discloses an aspect provides a tamping unit who contains eccentric fixture, it includes the excitation device, opens and closes drive arrangement, and clamping device opens and closes drive arrangement and connects clamping device, the excitation device is installed in opening and is closed drive arrangement and clamping device and combine the position, and the excitation device adopts eccentric shaft structure, and eccentric shaft axis place plane is perpendicular with clamping device motion plane.

Preferably, the two opening and closing driving devices are connected together, the connection point of the two opening and closing driving devices is a first joint, and the opening and closing driving devices, the clamping device and the excitation device are symmetrically arranged around the first joint.

The excitation device comprises a rotary power and an eccentric shaft. The rotating power drives the eccentric shaft to rotate, one end of the opening and closing driving device is installed on the outer side of the eccentric shaft, the rotating power and the eccentric shaft are further installed at one end of the clamping device, and the eccentric shaft is used as a hinged shaft of the opening and closing driving device and the clamping device.

The rotary power is preferably an electric motor or a hydraulic motor.

One end of the opening and closing driving device is hinged with a certain position on the fixed frame, and the other end of the opening and closing driving device is connected with the clamping device through an eccentric shaft.

The two ends of the opening and closing driving device can stretch out and draw back, and are preferably driven by an oil cylinder.

The clamping device comprises a clamping arm and a clamping pick, the clamping pick is fixed at the lower end of the clamping arm, and the preferred clamping pick and the clamping arm can be disassembled and assembled. The gripper arm is rotatable about a fixed axis, which is preferably arranged in the middle of the gripper arm.

More preferably, a shaft sleeve is installed at the outer side of the eccentric shaft, and the eccentric shaft is driven to rotate by the rotating power.

The eccentric shaft is characterized in that the shaft sleeves are preferably provided with two sets, wherein one set of first shaft sleeve adopts a single-layer structure, the other set of second shaft sleeve adopts a double-layer structure, the first shaft sleeve and the second shaft sleeve are mutually nested and installed, and the first shaft sleeve and the second shaft sleeve are surrounded on the outer side of the eccentric shaft in 360 degrees.

One set of shaft sleeve is fixed in and opens one end of closing drive arrangement, and another set is fixed in clamping device one end, and the preferred shaft sleeve that is fixed in and opens one end of closing drive arrangement adopts single-layer construction, and the shaft sleeve that is fixed in clamping device one end adopts bilayer structure.

According to the vibration under the different actions condition of following, contain eccentric fixture's tamping unit and propose two kinds of vibration modes: the vibration excitation device vibrates in the whole working process; the vibration excitation device vibrates in the whole process that the clamping pick contacts the ballast of the ballast bed, and does not vibrate in other processes. The first mode is simpler in control, but long-time vibration easily causes damage to or reduction in service life of a mechanical structure, and the second mode is beneficial to the service life of the mechanical structure, but has higher requirements on the repeated starting capability and the starting response speed of the excitation device.

Compared with the prior art, the tamping device with the eccentric clamping mechanism has the following advantages and effects: the tamping tool is used for tamping operation of ballast railway track beds, and has a simple and reliable structure and high engineering application value.

Drawings

Fig. 1 is a schematic structural view of a tamping apparatus including an eccentric clamping mechanism according to a preferred embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A in the embodiment shown in FIG. 1;

FIG. 3 is a schematic diagram illustrating the operation of the embodiment shown in FIG. 1;

FIGS. 4-6 are schematic views of the vibration principle and the motion mechanism of the embodiment shown in FIG. 1;

the numerical designations in fig. 1-6 mean:

1 vibration excitation device 11 rotating power 12 eccentric shaft 2 opening and closing driving device 3 clamping device

31 clamping arm 32 clamps the pick 4, the fixed frame 5 joint I6 joint II

7 joints, three 8 lower inserting frames, 9 sleepers, 10 track bed stone ballasts.

Detailed Description

Embodiment 1.1 as shown in fig. 1-2, a tamping device with an eccentric clamping mechanism is disclosed, which comprises a vibration excitation device 1, an opening and closing driving device 2 and a clamping device 3. For convenience of illustration, a coordinate system is defined as shown, which includes X, Y, Z three-dimensional directions, where X is the direction in which the rails extend, Y is the direction parallel to the ties, and Z is the vertical direction.

The excitation device 1 comprises a rotary power 11 and an eccentric shaft 12. The rotating power 11 drives the eccentric shaft 12 to rotate, and one end of the opening and closing driving device 2 is installed on the outer side of the eccentric shaft 12.

The rotating power 11 and the eccentric shaft 12 are also installed at one end of the clamping device 3, and the eccentric shaft 12 is used as a hinge shaft of the opening and closing driving device 2 and the clamping device 3.

The two ends of the opening and closing driving device 2 can stretch and retract and are driven by an oil cylinder. One end of the opening and closing driving device 2 is hinged with a certain position of the fixed frame 4 through a first joint 5, the other end of the opening and closing driving device is connected with the clamping device 3 through a second joint 6, an eccentric shaft 12 is adopted for the connection, and a rotary power 11 is adopted to drive the eccentric shaft 12 to rotate, so that the second joint 6 generates vibration, and then the vibration is transmitted.

The clamping device 3 comprises a clamping arm 31 and a clamping pick 32, the clamping pick 32 is fixedly mounted at the lower end of the clamping arm 31, the clamping arm 31 is hinged with the fixed frame 4 through a joint three 7, and the joint three 7 is preferably arranged in the middle of the clamping arm 31.

Fig. 4-6 show schematic diagrams of the vibration principle motion mechanism of the present embodiment. Fig. 4, 5, and 6 show a state in which the rotation center of the eccentric shaft 12 is closest to the joint-5, a state in which the eccentric shaft 12 rotates at a certain angle, and a comparison of the two states in this order. It can be seen that as the eccentric shaft 12 rotates, the opening and closing driving device 2 and the clamping device 3 swing, and the movement is transmitted to the end of the clamping pick 32 through the rotation of the clamping device 3 around the joint three 7, so that the vibration of the end of the clamping pick 32 is realized.

With reference to the above analysis and fig. 3, the operation principle of the tamping apparatus including the eccentric clamping mechanism according to the present embodiment is described as follows:

a tamping device with an eccentric clamping mechanism is arranged on a lower inserting frame 8, and the tamping device moves up and down along the lower inserting frame 8 to perform lower inserting and lifting actions. The eccentric shaft 12 is driven by the rotating power 11 to rotate, so that the joint II 6 is vibrated, and then the vibration is transmitted in sequence until the end part of the clamping pick 32. The opening and closing driving device 2 can do telescopic motion, then the clamping arm 31 is driven to rotate around the joint III 7, and then the clamping pick 32 is driven to do clamping and opening actions.

When the tamping device is operated, the tamping device descends along the lower inserting frame 8, the clamping pickaxe 32 is inserted into the ballast 10 at the lower part of the sleeper 9, the clamping pickaxe 32 is inserted along with high-frequency vibration, the lower inserting of the clamping pickaxe 32 is facilitated, the opening and closing driving device 2 stretches out after the insertion, the clamping pickaxe 32 is pushed to perform clamping action, and the high-frequency vibration is still accompanied at the moment, so that the ballast 10 flows favorably. After the clamping action is completed, the tamping device is lifted, the opening and closing driving device 2 is retracted, and the clamping pick 32 is opened. This completes a tamping action.

According to the vibration condition of following under the different actions, the utility model provides a two kinds of vibration modes: the vibration excitation device 1 vibrates in the whole working process; the vibration excitation device 1 vibrates in the whole process that the clamping pick 32 contacts the ballast 10 of the ballast bed, and does not vibrate in other processes.

Example 1.2 a tamping apparatus including an eccentric clamping mechanism, which is different from the tamping apparatus of example 1.1 in that: the holding pick 32 and the holding arm 31 can be assembled and disassembled.

Claims (10)

1. The utility model provides a tamping device who contains eccentric fixture, its includes excitation device (1), opens and closes drive arrangement (2), clamping device (3), opens and closes drive arrangement (2) and connects clamping device (3), its characterized in that: the vibration excitation device (1) is arranged at the joint of the opening and closing driving device (2) and the clamping device (3), the vibration excitation device (1) adopts an eccentric shaft structure, the plane of the axis of the eccentric shaft is vertical to the motion plane of the clamping device (3), and the two ends of the opening and closing driving device (2) can stretch.

2. The tamping apparatus with an eccentric clamping mechanism according to claim 1, wherein: the two opening and closing driving devices (2) are connected together, the connection point of the two opening and closing driving devices is a first joint (5), and the opening and closing driving devices (2), the clamping device (3) and the vibration excitation device (1) are symmetrically arranged relative to the first joint (5).

3. The tamping apparatus having an eccentric clamping mechanism according to claim 1 or 2, wherein: the vibration excitation device (1) comprises rotary power (11) and an eccentric shaft (12), wherein the rotary power (11) drives the eccentric shaft to rotate, one end of an opening and closing driving device (2) is installed on the outer side of the eccentric shaft, the rotary power (11) and the eccentric shaft (12) are further installed at one end of a clamping device (3), and the eccentric shaft (12) is used as a hinged shaft of the opening and closing driving device (2) and the clamping device (3).

4. A tamping apparatus including an eccentric clamping mechanism, as defined in claim 3, wherein: one end of the opening and closing driving device (2) is connected with a certain position on the fixed frame (4), and the other end is hinged with the clamping device (3) through an eccentric shaft (12).

5. The tamping apparatus with an eccentric clamping mechanism according to claim 4, wherein: the clamping device (3) comprises a clamping arm (31) and a clamping pick (32), the clamping pick (32) is fixed at the lower end of the clamping arm (31), and the clamping pick (32) and the clamping arm (31) can be disassembled and assembled.

6. The tamping apparatus with an eccentric clamping mechanism according to claim 5, wherein: the holding arm (31) rotates around a fixed shaft arranged in the middle of the holding arm (31).

7. The tamping apparatus with an eccentric clamping mechanism according to any of claims 4 to 6, wherein: the outer side of the eccentric shaft (12) is provided with a shaft sleeve, and the rotating power (11) drives the eccentric shaft (12) to rotate.

8. The tamping apparatus with an eccentric clamping mechanism according to claim 7, wherein: the two sets of shaft sleeves are arranged, one set of first shaft sleeve adopting a single-layer structure and the other set of second shaft sleeve adopting a double-layer structure are mutually nested and arranged.

9. The tamping apparatus with an eccentric clamping mechanism, according to claim 8, wherein: the first shaft sleeve and the second shaft sleeve surround the outer side of the eccentric shaft (12) in 360 degrees.

10. The tamping apparatus with an eccentric clamping mechanism, according to claim 9, wherein: one set of axle sleeve is fixed in and opens and close drive arrangement (2) one end, and another set is fixed in clamping device (3) one end, and the axle sleeve that is fixed in and opens and close drive arrangement (2) one end adopts single-layer construction, and the axle sleeve that is fixed in clamping device (3) one end adopts bilayer structure.

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