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Coal mining machine and travel unit overload protective device thereof

An overload protection and shearer technology, which is applied in the directions of earth-moving drilling, slitting machinery, propulsion, etc., can solve the problem of insufficient protection of the walking part of the shearer.

Active Publication Date: 2013-05-15
SANY HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims to propose an overload protection device for a shearer and its walking part to solve the problem of insufficient protection for the walking part of the shearer and the need to replace new protection parts after overload damage

Method used

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  • Coal mining machine and travel unit overload protective device thereof

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] figure 1 It is a schematic cross-sectional view of the overload protection device for the running part of the shearer described in this embodiment. As shown in the figure, the overload protection device for the running part described in this embodiment includes a first connecting piece, a second connecting piece and a friction piece .

[0022] The first connecting piece is connected to the low-speed end of the transmission system of the traction part of the coal mining machine. The low-speed end mentioned here is the decelerated output end of the transmission system. In this embodiment, the first connecting piece is the inner surface and the The low-speed end engages the connecting sleev...

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Abstract

The invention provides a coal mining machine and a travel unit overload protective device thereof. The travel unit overload protective device of the coal mining machine comprises a first connecting piece, a second connecting piece and a friction piece, wherein the first connecting piece is connected with a low-speed end of a transmission system of a traction unit of the coal mining machine; the second connecting piece is connected with a travelling wheel of the travel unit of the of the coal mining machine; and friction surfaces of the friction piece are respectively tightly pressed on the first connecting piece and the second connecting piece, so that the first connecting piece and the second connecting piece can be in overload slipped connection with each other. The travel unit overload protective device of the coal mining machine has the beneficial effects that when the overload phenomenon occurs, the first connecting piece and the second connecting piece can slip to realize overload protection, so that overload protection parts can not be damaged; and as the first connecting piece is connected with the low-speed end of the transmission system of the traction unit of the coal mining machine, the overload protection effect can be played within the shortest time, so that damage to transmission parts and components due to overload can be avoided.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a coal shearer and an overload protection device for a traveling part thereof. Background technique [0002] At present, in terms of overload protection of the traveling part of the coal mining machine, the main measures are to use torque shaft or electrical protection. The scheme of using the torque shaft is to connect a torque shaft to the motor shaft. When the transmission system is overloaded, the transmission system is protected by breaking the torque shaft. All the transmission parts of the vehicle have been overloaded, which has caused some damage to the transmission system, and the protection of the road wheels is not obvious. For the electrical protection scheme, due to the obvious hysteresis of electrical protection, it will still cause certain damage to the transmission system. There is also an overload protection scheme, which effectively protects the traveling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C29/22E21C35/04
Inventor 戴玉龙贾安鹏佟海龙
Owner SANY HEAVY EQUIP
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