Hand tamper

Abstract

To provide a rechargeable hand-type tie tamper that has a simple configuration, is easy to handle, can be safely operated, and can obtain stable vibration by stabilizing rotation by modifying the configuration of a vibration-generating part.SOLUTION: A hand-type tie tamper is provided with an operation handle 1, a vibration-generating part 4 suspended from the operation handle 1, a beater 5 attached to the vibration-generating part 4, and an unbalance weight 24 fixed to a rotary shaft 23 in the vibration-generating part 4 is fan-shaped and integrated with a flywheel 25. In one embodiment, the annular flywheel 25 is integrated with the outer peripheral surface of the unbalanced weight 24, and in another embodiment, the annular flywheel 25 is fixed to one side surface of the unbalanced weight 24.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a hand tamper, and more particularly to a hand tamper for repairing a ballast track with granulated ballast or a ballast track with a thin ballast bed.

Background Art

[0002] In the case of a ballast track, with daily train passages, the crushed stones forming the ballast bed break or shift, causing the track to subside, and the so-called floating sleeper phenomenon occurs where the sleeper floats from the ballast bed and hangs on the rail. If train operation continues in this floating sleeper state, it will lead to further deterioration of the ballast bed and hinder safe operation. Therefore, repair work is generally carried out using a tool called a hand tamper.

[0003] Generally, a hand tamper consists of a vibration generating part, a beater attached to the vibration generating part and driven by vibration, and a rod-shaped operation handle arranged on the upper part of the vibration generating part (such as Patent No. 6175337, Japanese Unexamined Patent Application Publication No. 2015-59329, etc.). The operator holds the operation handle with both hands, enters the beater into the ballast while vibrating it by the vibration generating part, collects the crushed stones to the floating sleeper location by vibration, and fills the space to repair it. Hand tampers include engine types, types with a power cord, and rechargeable cordless types, and the hand tamper according to the present invention includes all these types.

[0004] Since a hand tamper is operated by an operator holding the operation handle, it is required to have a simple structure, be easy to handle, and allow safe work. Needless to say, it is also required to have a performance that can sufficiently fulfill the function of entering the beater into the ballast while vibrating it, collecting the crushed stones to the floating sleeper location by the vibration, and filling the space to repair it.

[0005] Conventional hand tampers employ either a fan-shaped unbalanced weight as the vibration source, rotating it by passing a motor shaft through its core to generate vibration through centrifugal force, or rotating a rotating shaft with a section cut into an arc shape. If the vibration decreases or becomes unstable during operation, the beater becomes less likely to enter the ballast, reducing work efficiency. To obtain stable vibration, it is necessary to stabilize the rotation, but neither of these methods incorporates any measures to stabilize the rotation.

[0006] Especially in the case of rechargeable tools, sufficient power supply is not always guaranteed, so it is necessary to stabilize the rotation with as little energy as possible. Furthermore, since a hand tie tamper is a hand tool, the mechanism added to stabilize the rotation must be kept to the minimum size and weight. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 6175337 [Patent Document 2] Japanese Patent Publication No. 2015-59329 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The invention described in claim 1 for solving the above problems is a rechargeable hand tie tamper comprising an operating handle, a vibration exciter suspended from the operating handle, and a beater attached to the vibration exciter, In the aforementioned vibration generating section, the unbalance weight fixed to the rotating shaft is fan-shaped, and the flywheel is integrated with it. Occasionally, The flywheel and The aforementioned unbalanced weight The radius of rotation around the aforementioned axis of rotation is the same This is a hand tamper characterized by the following: [Means for solving the problem]

[0009] The invention described in claim 1, which solves the above problem, comprises an operating handle, a vibration exciter suspended from the operating handle, and a beater attached to the vibration exciter. The hand tie tamper is characterized in that the unbalance weight fixed to the rotating shaft in the vibration generating section is fan-shaped and has an integrated flywheel.

[0010] In one embodiment, an annular flywheel is integrated with the outer circumferential surface of the unbalanced weight.

[0011] In another embodiment, an annular flywheel is fixed to one side of the unbalanced weight. [Effects of the Invention]

[0012] As described above, the present invention has a simple configuration, is easy to handle and safe to operate, and integrates a flywheel with the unbalanced weight that constitutes the vibration generating part, thus stabilizing the rotation of the unbalanced weight and enabling stable vibration. Moreover, since the flywheel is integrated with the unbalanced weight and its size is contained within the rotation range of the unbalanced weight, the added mechanism for stabilizing the rotation is kept to a minimum size and mass. Furthermore, it has the advantage of being applicable to engine-driven types, corded types, and rechargeable cordless types. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view of one embodiment of a hand tie tamper according to the present invention. [Figure 2] This is a right side view of one embodiment of a hand tie tamper according to the present invention. [Figure 3] This is a plan view of one embodiment of a hand tie tamper according to the present invention. [Figure 4] This figure shows the hand tamper according to the present invention in a horizontal position. [Figure 5] FIG. 1 is a front view and a sectional view taken along line A-A showing a configuration example of an imbalance weight portion of an oscillation portion of a hand titan paver according to the present invention. [Figure 6] FIG. 2 is a front view, a sectional view taken along line A-A, a front view of a flywheel and a main body of an imbalance weight showing another configuration example of an imbalance weight portion of an oscillation portion of a hand titan paver according to the present invention. [Figure 7] FIG. 3 is a graph showing the utility of an imbalance weight portion of an oscillation portion of a hand titan paver according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The illustrated example is a rechargeable hand titan paver. FIG. 1 is a front view showing the configuration of the hand titan paver, FIG. 2 is a right side view thereof, and FIG. 3 is a plan view thereof. As shown therein, the present hand titan paver includes an operation handle 1 extending in the horizontal direction, an oscillation portion 4 usually suspended from the operation handle 1 via a pair of buffer arms 2 and 3, a beater 5 attached to the oscillation portion 4, a control box 6 installed in the middle of the operation handle 1 to control the operation of the oscillation portion 4, and a pair of storage batteries 7 and 8 detachably arranged in the control box 6 (in the case of an engine-driven type and a type with a power cord of a titan paver, the control box 6 and the storage batteries 7 and 8 are not included).

[0015] The oscillation portion 4 includes a vibration case 21, a motor 22 disposed in the vibration case 21, and an imbalance weight 24 fixed to the rotation shaft 23 of the motor 22 to generate vibration. The vibration case 21 is supported by fixing the side surface thereof to support members 19 and 20 vertically provided at the lower ends of the buffer arms 2 and 3. The beater 5 is sandwiched between one support member 19 and the side surface of the vibration case 21. Further, a handle 27 is attached to the other support member 20.

[0016] The imbalance weight 24 is fan-shaped, and in order to stabilize its rotation, the flywheels 25 and 26 are integrated. Flywheels 25 and 26 are generally used to stabilize the rotation of the shaft. However, since the hand-held titanizer according to the present invention is a hand tool, the flywheel needs to be minimized in size and mass.

[0017] In the example shown in FIG. 5, an annular flywheel 25 is integrally arranged along the outer peripheral surface of the imbalance weight 24. In other words, the imbalance weight 24 is integrated with the inner peripheral surface of the annular flywheel 25. In this case, the imbalance weight 24 can be integrally formed with the annular flywheel 25, or separately formed and integrated by welding or the like. Also, in the example shown in FIG. 6, a relatively thin donut-shaped flywheel 26 having the same diameter as that is fixed to one side surface of the imbalance weight 24 by bolting or the like and integrated. In either case, the flywheels 25 and 26 are dimensions within the rotation range of the imbalance weight 24, and the weight is also minimized.

[0018] Thus, by integrating the flywheels 25 and 26 with the fan-shaped imbalance weight 24, the rotation of the imbalance weight is stabilized without causing an increase in power consumption, and the vibration is stabilized. FIG. 7 is a graph comparing the acceleration of the beater 5 in the case of an embodiment in which the annular flywheel 25 is integrated with the imbalance weight 24 as shown in FIG. 5 and in the case of a conventional configuration in which no flywheel is attached to the imbalance weight 24. Note that all of these are rechargeable hand-held titanizers.

[0019] In this experimental example, the average acceleration when no flywheel is attached to the imbalance weight 24 is about 380 m / s 2 whereas the average acceleration when the annular flywheel 25 is attached is about 520 m / s 2As a result, the amount has increased significantly. As is clear from these experimental results, in the case of the hand tie tamper according to the present invention, which uses a flywheel-integrated unbalance weight 24, a larger acceleration can be obtained compared to conventional ones, vibration is stabilized accordingly, the lack of force during ballast penetration is eliminated, and work efficiency is improved.

[0020] In a preferred embodiment, a protective guard 9 is installed on the operating handle 1 to protect the control box 6 and the batteries 7 and 8. The protective guard 9 is usually made of pipe material, and its shape is not particularly limited, but it needs to be a simple shape that surrounds the control box 6 and the batteries 7 and 8 without obstructing the operator's view. In the illustrated example, elongated U-shaped pipe materials 9a and 9b with rounded corners are placed inclined in the front-to-back direction in front of and behind the operating handle 1, and their intermediate parts are connected by a connecting pipe 9c (see Figures 2 and 3). When the hand tie tamper is laid on its side, one of the pipe materials 9a and 9b makes contact with the vibration case 21 of the vibration exciter 4, and this protective guard 9 functions to maintain a stable side-lying position (see Figure 4). [Industrial applicability]

[0021] As described above, the present invention has a simple configuration, is easy to handle and safe to operate, and integrates a flywheel with the unbalanced weight that constitutes the vibration generating part. This allows for stable rotation of the unbalanced weight and stable vibration. Furthermore, since the flywheel is integrated with the unbalanced weight and its size is within the rotation range of the unbalanced weight, the mechanism added for stabilizing rotation is kept to a minimum size and mass. In addition, it is applicable to engine-driven types, corded types, and rechargeable cordless types, and has great industrial applicability. [Explanation of Symbols]

[0022] 1. Operating handle 2,3 Shock absorber arms 4 Excitation part 5 Beater 6. Control Box 7,8 Storage batteries 9 Protective Guard 21 Vibration Case 22 motors 23 Rotation axis 24 Unbalanced weights 25,26 Flywheel 27 Handle

Claims

1. A rechargeable hand tie tamper comprising an operating handle, a vibration exciter suspended from the operating handle, and a beater attached to the vibration exciter, A hand tie tamper characterized in that the unbalance weight fixed to the rotating shaft in the vibration generating section is fan-shaped, has an integrated flywheel, and the rotation radius of the flywheel and the unbalance weight with respect to the rotating shaft is the same.

2. The titer tamper according to claim 1, wherein an annular flywheel is integrated with the outer circumferential surface of the unbalanced weight.

3. The titer tamper according to claim 1, wherein an annular flywheel is fixed to one side of the unbalanced weight.

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