阅读说明：本技术 一种带接触保持机构的捣固装置及其相应的捣固方法 (Tamping device with contact maintaining mechanism and corresponding tamping method thereof ) 是由 刘飞香 *** 谢江生 叶永钦 刘刚 王红兵 李禹成 杨晓梅 符朗 蔡文涛 潘勇 于 2019-03-22 设计创作，主要内容包括：一种带接触保持机构的捣固装置及其相应的捣固方法,其包括激振装置(1)、张合驱动装置(2),夹持装置(3)；激振装置(1)包括旋转动力(11)、偏心块(12)、振动杆(13),旋转动力(11)连接并带动偏心块(12)旋转,激振装置(1)还包括接触保持装置(14),振动杆(13)的运动通过接头一(5)、张合驱动装置(2)、接头二(6)传递到夹持装置(3),通过夹持装置(3)绕接头三(7)转动,运动传递到了夹持镐(32)端部,从而实现了夹持镐(32)端部的振动。发明所述带接触保持机构的捣固装置,用于有砟铁路道床捣固作业,结构简单可靠,工程应用价值高。(A tamping device with a contact maintaining mechanism and a corresponding tamping method thereof comprise a vibration exciting device (1), an opening and closing driving device (2) and a clamping device (3); excitation device (1) is including rotary power (11), eccentric block (12), vibrating arm (13), rotary power (11) are connected and are driven eccentric block (12) rotatory, excitation device (1) still includes contact retaining device (14), the motion of vibrating arm (13) is through joint one (5), open and shut drive arrangement (2), joint two (6) transmit clamping device (3), rotate around joint three (7) through clamping device (3), the motion has transmitted centre gripping pick (32) tip, thereby the vibration of centre gripping pick (32) tip has been realized. The tamping device with the contact maintaining mechanism is used for tamping operation of ballast railway track beds, and is simple and reliable in structure and high in engineering application value.)

1. A tamping device with a contact maintaining mechanism comprises a vibration exciting device (1), an opening and closing driving device (2) and a clamping device (3); excitation device (1) is including rotary power (11), eccentric block (12), vibrating arm (13), and rotary power (11) are connected and are driven eccentric block (12) rotatory, its characterized in that: one end of the vibrating rod (13) is in contact with the surface of the eccentric block (12), the other end of the vibrating rod (13) is connected with the opening and closing driving device (2), and the opening and closing driving device (2) is connected between the vibrating rod (13) and the clamping device (3).

2. The tamper with contact maintaining mechanism of claim 1, wherein: the excitation device (1) further comprises a contact maintaining device (14).

3. The tamper with contact maintaining mechanism of claim 1, wherein: the rotation axes of the rotary power (11) and the eccentric block (12) of the excitation device (1) are parallel to the motion plane of the clamping device (3), or the rotation axes of the rotary power (11) and the eccentric block (12) are vertical to the motion plane of the clamping device (3).

4. The tamping apparatus with contact maintaining mechanism according to claim 2, wherein: one end of the contact maintaining device (14) is connected with the vibrating rod (13), the other end of the contact maintaining device (14) is connected with the fulcrum, and the contact maintaining device (14) provides tension or pulling force to enable the vibrating rod (13) to be always in surface contact with the eccentric block (12).

5. The tamper with contact maintaining mechanism of claim 1, wherein: the vibrating rod (13) passes through two fulcrums, namely a fulcrum I and a fulcrum II, and the fulcrum I and the fulcrum II are arranged on a fixed frame (4) of the tamping vehicle, or only one fulcrum is arranged and connected to the fixed frame (4) of the tamping vehicle.

6. The tamper with contact maintaining mechanism of claim 1, wherein: the clamping device (3) comprises a clamping arm (31) and a clamping pick (32), and the clamping pick (32) is arranged at the lower end of the clamping arm (31).

7. The tamper with contact maintaining mechanism of claim 1, wherein: the connection point between the vibrating rod (13) and the opening and closing driving device (2) forms a first joint (5).

8. The tamper with contact maintaining mechanism of claim 1, wherein: the connection point between the opening and closing driving device (2) and the clamping device (3) forms a second joint (6).

9. The tamper with contact maintaining mechanism of claim 1, wherein: the clamping device (3) is also connected to the fixed frame (4), and the connection point of the clamping device (3) and the fixed frame (4) forms a joint III (7), so that the clamping arm (31) can rotate around a fixed shaft on the fixed frame (4).

10. A tamping method, comprising:

step S1, placing the tamping device on a road section to be tamped, starting the rotary power of the tamping device, enabling the vibration exciting rod to do low-amplitude high-frequency reciprocating motion in a vertical plane, and driving the clamping device to swing in the vertical plane at low amplitude and high frequency by the opening and closing driving device under the driving of the vibration rod;

step S2, the lower inserting device is started, and the tamping pickaxe is inserted into the stone ballast beside the sleeper to be tamped;

step S3, opening the opening and closing driving device to drive the joint II to swing greatly, wherein the swing of the joint II rotates around the joint III through the clamping device and is transmitted to the end part of the clamping pick, so that the clamping action of the end part of the clamping pick is realized; the clamping action lasts for a period of time;

step S4, after the tamping operation is finished, the lower inserting device is lifted to enable the clamping pick to leave the stone ballast and enter the next operation position to continue operation or drive away from the operation road section, and the method is characterized in that: a tamping unit with contact maintaining mechanism according to any of claims 1 to 10.

Technical Field

The invention relates to a tamping device, and belongs to the technical field of design and manufacture of railway maintenance machinery.

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.

Disclosure of Invention

The invention provides a tamping device with a contact maintaining mechanism and a corresponding tamping method thereof, which are used for tamping operation of ballast railway ballast beds, and have simple and reliable structure and high engineering application value.

The invention provides a tamping device with a contact maintaining mechanism, which comprises a vibration exciting device, an opening and closing driving device and a clamping device; the vibration excitation device comprises rotary power, an eccentric block and a vibrating rod, the rotary power is connected with and drives the eccentric block to rotate, one end of the vibrating rod is contacted with the surface of the eccentric block, the other end of the vibrating rod is connected with the opening and closing driving device, and the opening and closing driving device is connected with the vibrating rod and between the clamping devices.

Preferably, the vibration rod is mounted on at least one fulcrum.

The excitation device can adopt two structural schemes: the first scheme is that the rotation power and the rotation axis of the eccentric block are parallel to the motion plane of the clamping device; the second scheme is that the rotating power and the rotating axis of the eccentric block are perpendicular to the moving plane of the clamping device.

The vibration excitation device further comprises a contact maintaining device, one end of the contact maintaining device is connected with the vibrating rod, the other end of the contact maintaining device is connected to the fulcrum, and according to different installation forms, the contact maintaining device provides tension or pulling force to enable the vibrating rod to be always in surface contact with the eccentric block.

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

One end of the vibrating rod is in surface contact with the eccentric block, and the other end of the vibrating rod is hinged with the opening and closing driving device.

More preferably, the oscillating rod passes through two fulcrums, namely a fulcrum I and a fulcrum II, which are mounted on a fixed frame of the tamping vehicle, or only one fulcrum is arranged, and the fulcrum is connected to the fixed frame of the tamping vehicle.

One end of the opening and closing driving device is connected with the vibrating rod, and the other end of the opening and closing driving device is connected with the clamping device.

The two ends of the opening and closing driving device are telescopic, and preferably oil cylinders are adopted.

Preferably, the clamping device comprises a clamping arm and a clamping pick, the clamping pick is arranged at the lower end of the clamping arm, and the clamping pick is preferably detachably connected with the clamping arm.

Preferably, a connection point between the vibrating rod and the opening and closing driving device forms a first joint.

And a connection point between the opening and closing driving device and the clamping device forms a second joint.

The clamping device is further connected to the fixed frame, and a third joint is formed by the clamping device and a connecting point of the fixed frame, so that the clamping arm can rotate around a fixed shaft on the fixed frame, and the fixed shaft is preferably arranged in the middle of the clamping arm.

Preferably, the first joint, the second joint and the third joint are movably connected, that is, the components at the two ends of the joint can rotate around the central axes of the first joint, the second joint and the third joint.

Preferably, the surface of the eccentric block and one end of the vibrating rod contacting with the eccentric block are subjected to surface strengthening treatment, so that the service life of the vibration excitation device is prolonged.

According to the vibration accompanying conditions under different actions, the invention provides two 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.

The tamping method according to the second aspect of the present invention employs the tamping device with the contact maintaining mechanism according to the first aspect of the present invention.

In a second aspect, the present invention provides a tamping method, comprising:

step S1, placing the tamping device on a road section to be tamped, starting the rotary power of the tamping device, enabling the vibration exciting rod to do low-amplitude high-frequency reciprocating motion in a vertical plane, and driving the clamping device to swing in the vertical plane at low amplitude and high frequency by the opening and closing driving device under the driving of the vibration rod;

step S2, the lower inserting device is started, and the tamping pickaxe is inserted into the stone ballast beside the sleeper to be tamped;

step S3, opening the opening and closing driving device to drive the joint II to swing greatly, wherein the swing of the joint II rotates around the joint III through the clamping device and is transmitted to the end part of the clamping pick, so that the clamping action of the end part of the clamping pick is realized; the clamping action lasts for a period of time;

and step S4, after the tamping operation is finished, lifting the lower inserting device to enable the clamping pick to be away from the stone ballast, and entering the next operation position to continue operation or driving away from the operation road section.

Preferably, in the step S1-step S3, the clamping device is turned on by the rotation power when contacting the stone ballast, and the clamping device swings along with the rotation power; when the clamping device leaves the stone ballast, the rotary power is cut off, the clamping device stops vibrating, and when the stone ballast is inserted again and tamping operation is started, the rotary power is started again.

Preferably, the vibrating rod passes through two fulcrums, namely a fulcrum I and a fulcrum II, and the fulcrum I and the fulcrum II are arranged on a fixed frame of the tamping vehicle, or only one fulcrum is arranged and connected to the fixed frame of the tamping vehicle.

The rotary power is connected to the eccentric block, the vibrating rod is installed on two sides of the eccentric block, the contact maintaining device provides tension or pulling force to enable the vibrating rod to be in surface contact with the rotary power eccentric block all the time, so that eccentric force is provided, and the opening and closing driving device can conveniently transmit exciting force caused by the eccentric force to the clamping device through the joint II.

The motion of the vibrating rod is transmitted to the clamping device through the first connector, the opening and closing driving device and the second connector, and is transmitted to the end part of the clamping pick through the rotation of the clamping device around the third connector, so that the vibration of the end part of the clamping pick is realized.

The opening and closing movement of the opening and closing driving device is transmitted to the end part of the clamping pick in the mode, so that the clamping action of the clamping pick is realized.

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

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a tamping unit with contact retention mechanism according to the present invention;

FIG. 2 is a schematic diagram illustrating an operation state of the embodiment shown in FIG. 1;

FIGS. 3-5 are schematic views of the vibrating XY-plane motion mechanism of the embodiment of FIG. 1;

6-8 are schematic diagrams of the XZ plane motion mechanism of the vibration principle of the embodiment shown in FIG. 1;

FIG. 9 is a schematic structural view of a second embodiment of a tamping apparatus with contact-and-hold mechanism according to the present invention;

fig. 10-12 are schematic diagrams of the vibrating principle motion mechanism of the embodiment shown in fig. 9.

1 vibration excitation device 11 rotating power 12 eccentric block 13 vibrating rod 14 contact keeping device 2 opening and closing driving device

3 the clamping arm 32 of the clamping device 31 clamps the fixed frame 41 of the pickaxe 4 with the fulcrum one 42 and the fulcrum two 5 and the joint one

6 joints, two 7 joints, three 8 lower inserted frames, 9 sleepers, 10 ballast beds.

Detailed Description

The operation of the present invention will be further described with reference to the accompanying drawings.