Device to assist the opening of covering element pivotably mounted relative to edge of frame

A technology for covering parts and auxiliary devices, used in plugs or lid devices to assist in opening covering parts such as trap doors, which can solve the problems of expensive, complex structure, and inability to obtain large auxiliary amplitudes.

Inactive Publication Date: 2013-11-20
EJ EMEA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This gas or spring actuator (vérinà ressort) does satisfactorily assist the operator in opening the cover part from the position where the cover frame closes the frame, but they are more expensive and very complex, especial

Method used

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  • Device to assist the opening of covering element pivotably mounted relative to edge of frame
  • Device to assist the opening of covering element pivotably mounted relative to edge of frame
  • Device to assist the opening of covering element pivotably mounted relative to edge of frame

Examples

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Embodiment Construction

[0035] refer to Figure 1-10 , reference numeral 1 represents a road device 1, including a frame 2 connected to the ground or road surface and a covering part 3, such as a trap door, a plug, a cover or the like.

[0036] In this case, the frame 2 is rectangular, and the covering part 3 is also rectangular and is hingedly mounted along one side or side 2a of the frame 2 around the axis of rotation XX', so that the covering part 3 can be closed when the opening O of the frame 2 is folded. Rotate between the position and the upright open position of the opening O of the release frame 2. In the closed position, the cover part 3 is embedded in the frame 2. In the open position, it is convenient to use the manhole to inspect or check the underground pipe network.

[0037] For example, the covering part is plate-shaped and, like the frame 2, may be formed of metal such as steel.

[0038] figure 1 means the upright open position of the covering part 3, which extends substantially pe...

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PUM

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Abstract

The present invention relates to a device to assist the opening of a covering element pivotably mounted relative to an edge of a frame. According to the invention, an assistance cylinder (6) includes a hollow shaft (7), a guide pin (10) inserted in the hollow shaft (7) and of which the end thereof opposite the end wall (8) comprises a yoke (11), a spring (13) inserted in the hollow shaft (7) surrounding the guide pin (10) and mounted pre-stressed when unloaded between the end wall (4) of the hollow shaft (7) and the yoke (11) of the guide pin (10), and a means (14) secured to the end of the guide pin (10) and engaging with the end wall (8) of the hollow shaft (7) for keeping the pre-stressed spring (13) in the released state thereof. The invention is useful in the field of road systems.

Description

technical field [0001] The present invention relates to devices for assisting the opening of covering parts such as trapdoors, plugs or lids, the covering device being pivotally mounted relative to the edge of a frame, rotatable between a folded position for closing the frame and an upright position for opening the frame. [0002] The invention is particularly, but not limited to, use in roadway installations where the covering part in the upright position releases the opening of the frame for inspection or inspection of the underground pipe network using a manhole. Background technique [0003] Such auxiliary devices are known which comprise actuators, each located between a covering element and the frame edge of the roadway device. [0004] Each auxiliary actuator may be of the gas type, or of the type comprising two springs, one concentric within the other within the actuator cylinder, and mounted with unloaded pre-compression between the end walls of the cylinder and the...

Claims

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Application Information

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IPC IPC(8): E05F1/10E02D29/14E06B5/01
CPCE06B5/01E05Y2201/474E05Y2201/686E02D29/1418E05F1/105E05Y2900/612E05F1/1058E05Y2201/416F16F1/128E05Y2201/11
Inventor 亚历山大·皮埃梅
Owner EJ EMEA
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