Advancing ram pin retention device
US-9963966-B2 · May 8, 2018 · US
Roof Support Unit for a Mining Machine
US2025163807A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025163807-A1 |
| Application number | US-202318833311-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 4, 2023 |
| Priority date | Jan 25, 2022 |
| Publication date | May 22, 2025 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
The present invention refers to a roof support unit ( 10 ) for a mining machine, particularly for a longwall mining system, comprising a support canopy ( 14 ) which is supported on a base ( 16 ) via at least one damper unit ( 18 ) and at least one actuator ( 20 ) configured to move the support canopy ( 14 ) relative to the base ( 16 ).
First claim
Opening claim text (preview).
1 . A roof support unit for a mining machine, particularly for a longwall mining system, comprising a support canopy which is supported on a base via at least one damper unit and at least one actuator configured to move the support canopy relative to the base. 2 . The roof support unit according to claim 1 , wherein the damper unit and the actuator are connected in line between the support canopy and the base. 3 . The roof support unit according to claim 1 , wherein the actuator is configured to raise or lower the support canopy relative to the base. 4 . The roof support unit according to claim 1 , wherein the actuator is at least one of a linear actuator and hydraulic actuator. 5 . The roof support unit according to claim 1 , wherein the damper unit is configured to transmit a support force between the support canopy and the base for maintaining or changing a position of the support canopy relative to the base during operation. 6 . The roof support unit according to claims 1 , wherein the support canopy is structurally connected to the base via the damper unit. 7 . The roof support unit according to claim 1 , wherein the damper unit is configured to allow movement of the actuator relative to the support canopy or the base. 8 . The roof support unit according to claim 1 , wherein the damper unit is configured to dampen movement of the actuator relative to the support canopy or the base. 9 . The roof support unit according to claim 1 , wherein the damper unit is configured to dampen movement of the actuator relative to the support canopy or the base in a retracting or extending movement direction of the actuator. 10 . The roof support unit according to claim 1 , wherein the damper unit is mounted to an end section of the actuator. 11 . The roof support unit according to claim 1 , wherein the damper unit is interposed between the support canopy and the actuator or between the base and the actuator. 12 . The roof support unit according to claim 1 , wherein the damper unit comprises a compression element configured to convert motion energy of the actuator into potential energy or heat. 13 . The roof support unit according to claim 12 , wherein the compression element comprises or is a solid compression element. 14 . The roof support unit according to claim 12 , wherein the compression element comprises or is a compression fluid. 15 . The longwall mining system comprising at least one roof support unit according to claim 1 .
Assignees
Inventors
Classifications
Hydraulic or pneumatic control · CPC title
Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices · CPC title
- E21D23/049Primary
Connecting devices between the head or foot of a prop and the cap or base of the roof support · CPC title
- E21D23/04Primary
Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor (E21D23/14 takes precedence) · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2025163807A1 cover?
- The present invention refers to a roof support unit ( 10 ) for a mining machine, particularly for a longwall mining system, comprising a support canopy ( 14 ) which is supported on a base ( 16 ) via at least one damper unit ( 18 ) and at least one actuator ( 20 ) configured to move the support canopy ( 14 ) relative to the base ( 16 ).
- Who is the assignee on this patent?
- Caterpillar Inc
- What technology area does this patent fall under?
- Primary CPC classification E21D23/049. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Thu May 22 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).