Full-section support carrying device and carrying method for coal mine haulage roadway

Abstract

The invention provides a full-section supporting and carrying device and method for a coal mine haulage roadway. The full-section supporting and carrying device comprises a carrying vehicle, a telescopic folding hydraulic support and an offset type rotary clamping mechanism. The offset type rotary clamping mechanism is used for carrying the telescopic folding hydraulic support. The carrying vehicle moves along a coal mine haulage roadway. The telescopic folding hydraulic support comprises a telescopic top beam assembly, a telescopic bottom plate assembly and a pair of telescopic stand columns. The telescopic bottom plate assembly comprises a pair of turnover bottom beams hinged to the telescopic stand columns, and the telescopic bottom beams and the telescopic bottom plate assembly are used for protecting the bottom of the coal mine haulage roadway. A side adjusting oil cylinder is obliquely arranged between the telescopic stand column and the overturning bottom beam and used for driving the telescopic bottom plate assembly to be overturned and folded. According to the full-section supporting and carrying device for the coal mine haulage roadway, the supporting capacity of full-section supporting to the bottom of the roadway is improved, and the stability and adaptability of the full-section supporting and carrying device for the coal mine haulage roadway during carrying are improved.

Description

Technical Field

[0001] This invention relates to the field of support and transfer equipment for coal mine transport roadways, and more specifically, to a full-section support and transfer device and method for coal mine transport roadways. Background Technology

[0002] Traditional haulage roadways are supported by bolts, cables, and mesh. During the longwall mining process, as the face advances, these bolts, cables, and meshes in both roadways need to be removed in advance. If removal is not timely, the bolts and cables may get caught in the coal mining machine drum or be ejected into the working face area, causing equipment damage and injuries. Furthermore, bolts and cables are disposable consumables, and the removed bolts, cables, and meshes cannot be reused, which increases the cost of roadway support. To eliminate bolt, cable, and mesh support and improve support efficiency, a full-support combined frame has been adopted. However, because the full-support combined frame lacks a bottom sealing beam, it is prone to subsidence in poor roadway conditions. Meanwhile, due to the large number of equipment in the transport roadway—coal mining machines, scraper conveyors, and hydraulic supports coexisting—the working area is narrow and space is limited. When disassembling and transferring hydraulic supports, the width of the transport roadway restricts operations, potentially leading to instability and overturning. Furthermore, interference between the hydraulic supports and other equipment can occur during disassembly and transportation. Therefore, traditional support equipment and transfer methods are ill-suited to the complex environment of transport roadways.

[0003] Patent application CN103233761A discloses a scraper conveyor-assisted mobile large-circulation pre-support support for machine roadways. It includes a pre-support support consisting of a telescopic support beam and hydraulic columns hinged to both ends of the telescopic support beam, as well as a conveying device. The telescopic support beam, hinged to the upper part of the hydraulic columns, has telescopic beams hinged at both ends by telescopic hydraulic cylinders. Multiple pre-support supports are arranged continuously along the longitudinal direction of the roadway to provide roof support. The conveying device is located on the scraper conveyor and drives a transport vehicle via drive rollers to move each pre-support support sequentially along the longitudinal direction of the roadway. This scraper conveyor-assisted mobile large-circulation pre-support support for machine roadways can adapt to the actual needs of machine roadways and is conducive to further improving the production capacity of coal mining faces. It solves the problems of existing technologies, such as the significant limitations in support design for machine roadways with a large number of equipment, repeated roof support, cumbersome operation, and low work efficiency. However, this scraper conveyor-assisted mobile large-circulation machine roadway advance support still suffers from a lack of support for the roadway floor and an inability to adapt to complex transport roadway environments during movement. Furthermore, since this scraper conveyor-assisted mobile large-circulation machine roadway advance support does not support the roadway floor, there is a risk that the transport vehicle may get stuck while moving the advance support and that its own weight may damage the roadway floor. Summary of the Invention

[0004] In order to increase the support capacity of full-section support for the bottom of the roadway, improve the stability and adaptability of the full-section support device for coal mine transportation roadways during transportation, improve the stability and safety during transportation, and reduce the impact and damage to the roadway floor during transportation, the technical solution adopted by the present invention is: a full-section support transportation device for coal mine transportation roadways, including a transportation vehicle, a telescopic and foldable hydraulic support, and an offset rotating clamping mechanism set on one side of the scraper conveyor; The offset rotating clamping mechanism is used to move the telescopic folding hydraulic support between the transport vehicle and the coal mine transport roadway. The transport vehicle moves along the coal mine transport roadway to move the retractable and foldable hydraulic support. The retractable and foldable hydraulic support includes a telescopic top beam assembly, a telescopic bottom plate assembly, and a pair of telescopic columns; the telescopic top beam assembly is used to support the top of the coal mine transport roadway; the telescopic columns are movably hinged between the telescopic top beam assembly and the telescopic bottom plate assembly, and are used to drive the telescopic top beam assembly to rise and fall; The telescopic base plate assembly includes a pair of flipping base beams hinged to the telescopic column, and a telescopic base beam that can be housed inside the flipping base beams. The telescopic base plate assembly is used to protect the bottom of the coal mine transport roadway and to allow the transport vehicle to move. A side adjustment cylinder is obliquely arranged between the telescopic column and the flipping base beams. The side adjustment cylinder is used to drive the telescopic base plate assembly to flip and fold.

[0005] Beneficial Effects: By designing the bottom beam of the retractable folding hydraulic support as a telescopic base plate assembly, and connecting the telescopic base plate assembly to a pair of telescopic columns via a side-adjusting hydraulic cylinder, the relocation and installation of the retractable folding hydraulic support only requires retracting and flipping the telescopic base plate assembly, retracting the telescopic columns, and retracting the telescopic top beam assembly to complete the overall storage of the retractable folding hydraulic support. This significantly simplifies the operation steps of moving the support, effectively reduces the volume of the support during the relocation process, and avoids interference during relocation. Simultaneously, the multiple flipping bottom beams in the support state can lay a dedicated road on the tunnel floor, providing a foundation for transport vehicles, thereby improving the stability of the transport vehicles during movement and preventing them from getting stuck or damaging the tunnel floor due to their own weight.

[0006] Based on the above, the offset rotating clamping mechanism includes a first rotating base, a telescopic beam, a telescopic beam cylinder, a second rotating base, a tensioning cylinder, and a pair of clamping blocks; The first rotating base is disposed on one side of the scraper conveyor, the telescopic beam is hinged between the first rotating base and the second rotating base, the telescopic beam cylinder is disposed on the telescopic beam for driving the telescopic beam to rise obliquely, the second rotating base is disposed on the top of the telescopic beam, and a pair of clamping blocks are slidably disposed on the second rotating base through the tensioning cylinder; The first rotating base is used to drive the telescopic beam to rotate, thereby changing the position of the telescopic beam; the second rotating base is used to drive the clamping block to rotate, thereby changing the direction of the telescopic and foldable hydraulic support.

[0007] Beneficial effects: By setting the offset rotating clamping mechanism on one side of the scraper conveyor, the scraper conveyor can be used to drive the offset rotating clamping mechanism to move, while the operation can also be carried out on the lower side of the telescopic and foldable hydraulic support. The scraper conveyor can provide stable support, which effectively improves the stability and adaptability of the operation process.

[0008] Based on the above, the axis of the first rotating base is eccentrically set to the axis of the second rotating base.

[0009] Beneficial effects: By setting the axis of the first rotating base to be eccentric with the axis of the second rotating base, it is easier to use the clamping block located on the second rotating base to perform offset clamping on one side of the scraper, thus increasing the ease of operation.

[0010] Based on the above, a diagonal bracing cylinder is provided between the telescopic beam and the second rotating base. The diagonal bracing cylinder is used to adjust the angle between the second rotating base and the telescopic beam so that the second rotating base is in a horizontal state.

[0011] Beneficial effects: By installing a diagonal bracing cylinder between the telescopic beam and the second rotating base, the posture of the second rotating base can be changed in real time using the diagonal bracing cylinder, so that it can maintain a horizontal state in real time according to the movement of the telescopic beam, thereby ensuring the horizontal clamping and transfer of the telescopic folding hydraulic support.

[0012] Based on the above, the telescopic top beam assembly includes a central top beam and a pair of telescopic top beams; the telescopic top beams are slidably disposed at both ends of the central top beam via telescopic hydraulic cylinders.

[0013] Beneficial effects: By designing the telescopic top beam assembly as a pair of telescopic top beams slidingly positioned at both ends of the middle top beam, it is possible to ensure that the position of the middle top beam remains unchanged during retraction, which facilitates the clamping blocks to clamp the middle top beam.

[0014] Based on the above, a pair of clamping holes are provided on the top beam for the offset rotating clamping mechanism to clamp.

[0015] Beneficial effects: By setting clamping holes on the top beam, accurate clamping positions can be provided for the clamping blocks, improving clamping accuracy and efficiency.

[0016] Based on the above, a side-push top beam is slidably provided on the outer side of one of the telescopic top beams via a side-push oil cylinder.

[0017] Beneficial effects: By sliding a side-push top beam on the outside of a telescopic top beam via a side-push hydraulic cylinder, the side-push top beam can be used to hold the roadway sidewall under support conditions, thereby increasing the support stability.

[0018] Based on the above, the telescopic column is provided with a column base at its bottom, and a side baffle is provided on the outside of the column base. One end of the flip-down bottom beam is hinged to the column base.

[0019] This invention also provides a full-section support and transportation method for coal mine transport roadways, comprising the following steps: When it is necessary to retract the telescopic and foldable hydraulic support, first move the transport vehicle along the unfolded and spliced ​​flip-bottom beam to the designated position. The offset rotating clamping mechanism uses the rotation and lifting of the telescopic arm to send a pair of clamping blocks into the clamping holes of the telescopic folding hydraulic bracket, and the pair of clamping blocks clamp the telescopic folding hydraulic bracket. The telescopic bottom beam retracts into the flipping bottom beam, which folds upward via the side adjustment cylinder, and the telescopic columns on both sides retract; the telescopic arm retracts, the telescopic and foldable hydraulic support is lowered, and the top beam is retracted. Finally, after the offset rotating clamping mechanism transfers the retractable foldable hydraulic support onto the transport vehicle by adjusting the rotation angle of the first rotating base and the second rotating base, the offset rotating clamping mechanism disengages from the retractable foldable hydraulic support, and the transport vehicle then travels along the unfolded and spliced ​​flip-over bottom beam to transport the retractable foldable hydraulic support away.

[0020] This invention has significant substantive features and remarkable progress compared to existing technologies. Specifically, the invention provides a full-section support and handling device and method for coal mine transport roadways. By designing the bottom beam of the retractable folding hydraulic support as a retractable base plate assembly, and connecting the retractable base plate assembly to a pair of retractable columns via a side-adjusting hydraulic cylinder, the retractable folding hydraulic support can be moved and installed without additional disassembly and assembly. Only the retractable base plate assembly, the retractable columns, and the retractable top beam assembly need to be retracted to complete the overall storage of the retractable folding hydraulic support. This facilitates clamping using an offset rotating clamping mechanism and movement along the coal mine transport roadway using a transport vehicle, significantly simplifying the support relocation operation, effectively reducing the volume of the support during relocation, and avoiding interference during the relocation process. Meanwhile, during the transfer process, a dedicated road can be laid on the tunnel floor using the bottom beams of multiple retractable and foldable hydraulic supports in a supported state. This allows the transport vehicle to travel on multiple unfolded and spliced ​​tilting bottom beams, thereby improving the stability of the transport vehicle during movement and preventing it from getting stuck or damaging the tunnel floor due to its own weight.

[0021] Meanwhile, by analyzing the existing equipment in the coal mine transport roadway and considering the movement of the scraper conveyor, an offset rotating clamping mechanism is positioned on one side of the scraper conveyor. This allows the scraper conveyor's power to drive the offset rotating clamping mechanism, eliminating the need for its own power source. Furthermore, the offset rotating clamping mechanism is designed as a first rotating base, a second rotating base, a liftable telescopic beam, and a pair of clamping blocks. This allows the mechanism to operate from below a telescopic folding hydraulic support, and the scraper conveyor can also act as a base for stability, effectively improving the stability and adaptability of the operation.

[0022] Furthermore, this telescopic folding hydraulic support increases the support area and capacity for coal mine return airway through its telescopic top beam assembly and telescopic bottom plate assembly, which can provide full-section support. This eliminates the need for anchor bolts, anchor cables, and anchor mesh support in the return airway, improving support efficiency and safety production coefficient.

[0023] Therefore, this invention eliminates the need for anchor bolts, anchor cables, and anchor mesh support in coal mine transport roadways, increases the support capacity of full-section support for the roadway bottom, and improves the stability and adaptability of the full-section support device for coal mine transport roadways during transportation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the unfolded state of a full-section support and handling device for a coal mine transport roadway provided in Embodiment 1 of the present invention.

[0025] Figure 2 This is a partial structural diagram of a full-section support and handling device for a coal mine transport roadway provided by the present invention in a folded state.

[0026] Figure 3 This is a schematic diagram of the unfolded state of a full-section support and handling device for a coal mine transport roadway provided in Embodiment 4 of the present invention.

[0027] Figure 4 This is a schematic diagram of the transport vehicle structure in a full-section support and transport device for coal mine transport roadways provided by the present invention.

[0028] Figure 5 This is a schematic diagram of the offset rotating clamping mechanism in a full-section support and handling device for coal mine transport roadways provided by the present invention.

[0029] Figure 6 , Figure 7 and Figure 8 This is a schematic diagram of the transport process of a full-section support and transport device for coal mine transport roadways provided by the present invention.

[0030] In the diagram: 1. Telescopic cylinder; 2. Telescopic top beam; 3. Side-push cylinder; 4. Side-push top beam; 5. Telescopic column; 6. Side baffle; 7. Side-adjusting cylinder; 8. Column base; 9. Tilting bottom beam; 10. Telescopic bottom beam; 11. Bottom beam telescopic cylinder; 12. Middle top beam; 13. Clamping hole; 14. Transport vehicle; 15. First rotating base; 16. Telescopic beam; 17. Telescopic beam cylinder; 18. Second rotating base; 19. Clamping block; 20. Tensioning cylinder; 21. Coal mine transport roadway; 22. Rear telescopic folding hydraulic support; 23. Offset rotating clamping mechanism; 24. Scraper conveyor; 25. Front telescopic folding hydraulic support; 26. Diagonal brace cylinder. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0032] Example 1 This embodiment provides a full-section support and transport device for coal mine transport roadways, such as... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, it includes a transport vehicle 14, a retractable and foldable hydraulic support, and an offset rotating clamping mechanism 23 located on one side of the scraper conveyor 24. Based on their distribution, they can be divided into a front retractable and foldable hydraulic support 25 and a rear retractable and foldable hydraulic support 22.

[0033] The offset rotating clamping mechanism 23 is used to move the retractable folding hydraulic support between the transport vehicle 14 and the coal mine transport roadway 21. The transport vehicle 14 moves along the coal mine transport roadway to move the retractable folding hydraulic support.

[0034] The retractable and foldable hydraulic support includes a telescopic top beam assembly, a telescopic base plate assembly, and a pair of telescopic columns 5. The telescopic top beam assembly is used to support the top of the coal mine transport roadway. The telescopic columns 5 are movably hinged between the telescopic top beam assembly and the telescopic base plate assembly, and are used to drive the telescopic top beam assembly to rise and fall.

[0035] The telescopic base plate assembly includes a pair of tilting base beams 9 hinged to the telescopic column 5, and a telescopic base beam 10 that can be housed inside the tilting base beams 9. The telescopic base plate assembly is used to protect the bottom of the coal mine transport roadway and to allow transport vehicles to move. A base beam telescopic cylinder 11 is provided between the telescopic base beam 10 and the tilting base beams 9.

[0036] A side-adjusting cylinder 7 is obliquely arranged between the telescopic column 5 and the flipping bottom beam 9. The side-adjusting cylinder 7 is used to drive the telescopic bottom plate assembly to flip and fold.

[0037] Specifically, such as Figure 5 As shown, the offset rotating clamping mechanism 23 includes a first rotating base 15, a telescopic beam 16, a telescopic beam cylinder 17, a second rotating base 18, a tensioning cylinder 20, and a pair of clamping blocks 19.

[0038] The first rotating base 15 is disposed on one side of the scraper conveyor 24, and the telescopic beam 16 is hinged between the first rotating base 15 and the second rotating base 18. The telescopic beam cylinder 17 is disposed on the telescopic beam 16 and is used to drive the telescopic beam 16 to rise obliquely. The second rotating base 18 is disposed on the top of the telescopic beam 16, and a pair of clamping blocks 19 are slidably disposed on the second rotating base 18 by a tensioning cylinder 20.

[0039] The first rotating base 15 is used to drive the telescopic beam 16 to rotate, thereby changing the position of the telescopic beam 16. The second rotating base 18 is used to drive the clamping block 19 to rotate, thereby changing the direction of the telescopic and foldable hydraulic support.

[0040] Specifically, the telescopic top beam assembly includes a central top beam 12 and a pair of telescopic top beams 2. The telescopic top beams 2 are slidably mounted at both ends of the central top beam 12 via telescopic cylinders 1. The central top beam 12 has a pair of clamping holes 13 for the offset rotating clamping mechanism 23 to clamp. The telescopic column 5 has a column base 8 at its bottom, and a side baffle 6 is provided on the outer side of the column base 8. One end of the flipping bottom beam 9 is hinged to the column base 8.

[0041] Example 2 This embodiment provides a full-section support and transport device for coal mine transport roadways. The main difference from Embodiment 1 is that in this embodiment, the axis of the first rotating base is eccentrically set with respect to the axis of the second rotating base. A diagonal bracing cylinder 26 is provided between the telescopic beam and the second rotating base. The diagonal bracing cylinder 26 is used to adjust the angle between the second rotating base 18 and the telescopic beam 16 so that the second rotating base 18 is in a horizontal state.

[0042] Example 3 This embodiment provides a full-section support and transportation method for coal mine transport roadways, such as... Figure 6 , Figure 7 and Figure 8 As shown, it includes the following steps: When it is necessary to retract the telescopic and foldable hydraulic support, first drive the transport vehicle to the designated position; The offset rotating clamping mechanism uses the rotation and lifting of the telescopic arm to send a pair of clamping blocks into the clamping holes of the telescopic folding hydraulic bracket, and the pair of clamping blocks clamp the telescopic folding hydraulic bracket. The telescopic bottom beam retracts into the flipping bottom beam, which folds upward via the side adjustment cylinder, and the telescopic columns on both sides retract; the telescopic arm retracts, the telescopic and foldable hydraulic support is lowered, and the top beam is retracted. Finally, after the offset rotating clamping mechanism transfers the retractable foldable hydraulic support onto the transport vehicle by adjusting the rotation angle of the first rotating base and the second rotating base, the offset rotating clamping mechanism disengages from the retractable foldable hydraulic support, and the transport vehicle then travels along the unfolded and spliced ​​flip-over bottom beam to transport the retractable foldable hydraulic support away.

[0043] Example 4 This embodiment provides a full-section support and transport device for coal mine transport roadways. The main difference from Embodiment 1 is that in this embodiment: Figure 3 As shown, a side-push top beam 4 is slidably mounted on the outer side of one of the telescopic top beams via a side-push cylinder 3.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A full-section support and transport device for coal mine transport roadways, characterized in that: It includes a transport vehicle, a telescopic and foldable hydraulic support, and an offset rotating clamping mechanism located on one side of the scraper conveyor; The offset rotating clamping mechanism is used to move the telescopic folding hydraulic support between the transport vehicle and the coal mine transport roadway. The transport vehicle moves along the coal mine transport roadway to move the retractable and foldable hydraulic support. The retractable and foldable hydraulic support includes a telescopic top beam assembly, a telescopic bottom plate assembly, and a pair of telescopic columns; the telescopic top beam assembly is used to support the top of the coal mine transport roadway; the telescopic columns are movably hinged between the telescopic top beam assembly and the telescopic bottom plate assembly, and are used to drive the telescopic top beam assembly to rise and fall; The telescopic base plate assembly includes a pair of flipping base beams hinged to the telescopic column, and a telescopic base beam that can be housed inside the flipping base beams. The telescopic base plate assembly is used to protect the bottom of the coal mine transport roadway. A side-adjusting cylinder is obliquely arranged between the telescopic column and the flipping base beams. The side-adjusting cylinder is used to drive the telescopic base plate assembly to flip and fold.

2. The full-section support and handling device for coal mine transport roadways according to claim 1, characterized in that: The offset rotating clamping mechanism includes a first rotating base, a telescopic beam, a telescopic beam cylinder, a second rotating base, a tensioning cylinder, and a pair of clamping blocks; The first rotating base is disposed on one side of the scraper conveyor, the telescopic beam is hinged between the first rotating base and the second rotating base, the telescopic beam cylinder is disposed on the telescopic beam for driving the telescopic beam to rise obliquely, the second rotating base is disposed on the top of the telescopic beam, and a pair of clamping blocks are slidably disposed on the second rotating base through the tensioning cylinder; The first rotating base is used to drive the telescopic beam to rotate, thereby changing the position of the telescopic beam; the second rotating base is used to drive the clamping block to rotate, thereby changing the direction of the telescopic and foldable hydraulic support.

3. The full-section support and handling device for coal mine transport roadways according to claim 2, characterized in that: The axis of the first rotating base is eccentrically set with respect to the axis of the second rotating base.

4. A full-section support and transport device for coal mine transport roadways according to claim 2 or 3, characterized in that: A diagonal bracing cylinder is provided between the telescopic beam and the second rotating base. The diagonal bracing cylinder is used to adjust the angle between the second rotating base and the telescopic beam so that the second rotating base is in a horizontal state.

5. The full-section support and handling device for coal mine transport roadways according to claim 1, characterized in that: The telescopic top beam assembly includes a central top beam and a pair of telescopic top beams; the telescopic top beams are slidably disposed at both ends of the central top beam via telescopic hydraulic cylinders.

6. A full-section support and transport device for coal mine transport roadways according to claim 5, characterized in that: The top beam is provided with a pair of clamping holes for the offset rotating clamping mechanism to clamp.

7. A full-section support and transport device for coal mine transport roadways according to claim 5 or 6, characterized in that: One of the telescopic top beams has a side-push top beam slidably mounted on its outer side via a side-push cylinder.

8. A full-section support and transport device for coal mine transport roadways according to claim 7, characterized in that: The telescopic column is provided with a column base at its bottom, and a side baffle is provided on the outside of the column base. One end of the flip-up bottom beam is hinged to the column base.

9. A method for full-section support and transportation of coal mine transport roadways according to any one of claims 1 to 8, comprising the following steps: When it is necessary to retract the telescopic and foldable hydraulic support, first move the transport vehicle along the unfolded and spliced ​​flip-bottom beam to the designated position. The offset rotating clamping mechanism uses the rotation and lifting of the telescopic arm to send a pair of clamping blocks into the clamping holes of the telescopic folding hydraulic bracket, and the pair of clamping blocks clamp the telescopic folding hydraulic bracket. The telescopic bottom beam retracts into the flipping bottom beam, which folds upward via the side adjustment cylinder, and the telescopic columns on both sides retract; the telescopic arm retracts, the telescopic and foldable hydraulic support is lowered, and the top beam is retracted. Finally, after the offset rotating clamping mechanism transfers the retractable foldable hydraulic support onto the transport vehicle by adjusting the rotation angle of the first rotating base and the second rotating base, the offset rotating clamping mechanism disengages from the retractable foldable hydraulic support, and the transport vehicle then travels along the unfolded and spliced ​​flip-over bottom beam to transport the retractable foldable hydraulic support away.

Images