Novel coal caving support for large-mining-height fully-mechanized caving mining
By designing protective and adjustment structures on the coal discharge support, the problems of easy damage to the operating rod and instability of the support were solved, achieving safe protection of the operating rod and stable adjustment of the support, thus improving mining efficiency and safety.
Patent Information
- Application Number
- CN202520286327.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing coal release supports lack protection for their operating rods in underground working environments, making them prone to damage and difficult to maintain stability in complex terrain, thus affecting mining efficiency and safety.
A novel coal discharge support structure was designed, comprising a protective structure and an adjustment structure. The protective structure protects the operating rod through a locking block, a protective plate, a torque spring, and a limit block. The adjustment structure achieves precise adjustment of the support plate through a worm gear transmission, ensuring the stability of the support.
It improves the safety and stability of the control lever, reduces the equipment failure rate, extends its service life, reduces the risk of safety accidents, and ensures the continuity and safety of mining operations.
Smart Images
Figure CN223661887U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to coal mining technical field especially relates to a novel coal drawing support of large mining height fully mechanized caving. BACKGROUND
[0002] In the field of coal mining, large mining height fully mechanized caving technology has been widely used in thick coal seam mining due to its high efficiency and high yield. This mining method can significantly improve the recovery rate of coal resources and effectively reduce the mining cost, which is of great significance to improve the economic benefit of coal enterprises and ensure energy supply.
[0003] However, the existing coal drawing support has many problems in practical application. On the one hand, the operating rod on the operating table lacks effective protection measures, and in the complex underground working environment, it is easy to be impacted by coal blocks and eroded by dust, which can cause damage to the operating rod and affect the normal operation and control of the support, thereby reducing the mining efficiency and safety. On the other hand, multiple coal drawing supports are often used together in coal mining. Due to the complex and changeable underground terrain of coal mines, it is difficult to ensure that the support is in a completely stable state when placed. The traditional coal drawing support cannot accurately adjust its stable state, which not only affects the coal drawing effect, but also causes uneven stress on the support, reduces the service life of the support, and even causes safety accidents.
[0004] Therefore, it is necessary to provide a new coal drawing support for large mining height fully mechanized caving to solve the above technical problems. CONTENT OF THE UTILITY MODEL
[0005] To solve the above technical problems, the utility model provides a novel coal drawing support for large mining height fully mechanized caving.
[0006] The novel coal drawing support for large mining height fully mechanized caving provided by the utility model comprises a base, a shield beam, an operating table, a protection structure and an adjusting structure. The bottom of the base is symmetrically provided with a support plate, and the top of the base is symmetrically provided with a hydraulic rod. The top of the hydraulic rod is provided with a shield beam. One side of the shield beam is rotatably connected with a shield beam. The bottom of the shield beam is rotatably connected with a connecting rod. The bottom of the connecting rod is rotatably connected with the base. The top of the base is fixedly connected with an operating table. The operating table is provided with an operating rod. The operating rod is electrically connected with the hydraulic rod. The top of the operating table is provided with a protection structure for protecting the operating rod. The bottom of the base is provided with an adjusting structure for adjusting the lifting of the support plate.
[0007] The protection structure comprises a clamping block, a protection plate, an extension block, a rotating shaft, a torque spring and a limiting block, one side of an operating table is fixedly connected with the clamping block in symmetry, the top of the operating table is rotatably connected with the protection plate, the side close to the clamping block of the protection plate is fixedly connected with the extension block in symmetry, the bottom of the extension block is rotatably connected with the rotating shaft, the two ends of the rotating shaft are fixedly connected with the torque spring, the other end of the torque spring is fixedly connected with the inside of the extension block, the middle part of the rotating shaft is fixedly connected with the limiting block, and the limiting block is clamped with the clamping block.
[0008] Preferably, the adjusting structure comprises a threaded rod, a hollow worm wheel, a first worm, a second worm and a second worm, the top of each of the two support plates is fixedly connected with the threaded rod in symmetry, the bottom of the base is fixedly connected with a plurality of groups of hollow worm wheels in symmetry, the inner wall of the hollow worm wheel is provided with a thread, the hollow worm wheel is meshingly connected with the threaded rod, the inside of the base is rotatably connected with the first worm in symmetry, the first worm is meshingly connected with the hollow worm wheel, the middle outer wall of the first worm is fixedly connected with the second worm, the inside of the base is rotatably connected with the second worm in symmetry, and the second worm is meshingly connected with the second worm.
[0009] Preferably, the bottom of the clamping block is designed to be inclined, and the top of the limiting block is designed to be inclined.
[0010] Preferably, the top of the operating table is designed to be inclined around.
[0011] Preferably, the inside of the base is fixedly connected with a motor in symmetry, and the output end of the motor is fixedly connected with one end of the second worm.
[0012] Preferably, the bottom surface of the support plate and the bottom surface of the base are located on the same horizontal line.
[0013] Compared with the related art, the novel coal drawing support for large mining height fully mechanized caving mining has the following beneficial effects:
[0014] The protection operating rod:
[0015] The unique protection structure on the operating table greatly enhances the safety and stability of operation, the protection plate cooperates with the torque spring and the limiting block, can effectively prevent the damage of sundries such as coal and gangue to the operating rod, in the harsh environment of the coal mine, the operating rod as a key component of the control hydraulic rod is very important for normal operation, the design of the protection structure reduces the equipment failure caused by the damage of the operating rod, reduces the maintenance cost and downtime, and ensures the continuity of the coal mining operation, in addition, the inclined design of the clamping block and the limiting block, and the inclined design of the top of the operating table, further optimize the protection effect, avoid the accumulation and clamping problem of sundries, and provide a more reliable operating environment for the operator.
[0016] Precise adjustment ensures the stability of the support:
[0017] The adjusting structure at the bottom of the base can accurately adjust the stable state of the support, the motor drives the second worm, and through a series of worm and gear transmissions, the height of the supporting plate is accurately controlled, in the complex underground terrain, the accurate adjusting function ensures the stability of the support, so that the support can be uniformly stressed under different operation conditions, which not only improves the caving effect, but also prolongs the service life of the support, reduces the risk of safety accidents caused by the inclination or uneven stress of the support, and ensures the safe operation of the mining operation. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A structure schematic view of the novel caving support for large mining height fully mechanized caving mining is provided.
[0019] Figure 2 A structure schematic view of the base is shown in the figure. Figure 1
[0020] A structure schematic view of the protection plate is shown in the figure. Figure 3 Figure 2 A structure schematic view of the limiting block is shown in the figure.
[0021] Figure 4 Figure 3 A sectional structure schematic view of the base is shown in the figure.
[0022] Figure 5 A sectional structure schematic view of the base is shown in the figure. Figure 2 Reference signs in the figure: 1, base; 2, supporting plate; 3, hydraulic rod; 4, shield beam; 5, shield support beam; 6, connecting rod; 7, operation table; 8, operation lever; 9, clamping block; 10, protection plate; 11, extension block; 12, rotating shaft; 13, torque spring; 14, limiting block; 15, threaded rod; 16, hollow worm gear; 17, first worm; 18, second worm gear; 19, second worm; 20, motor.
[0023] DETAILED DESCRIPTION In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail by combining with the drawings and examples, and it should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.
[0024] The specific implementation of the utility model will be described in detail in combination with specific examples.
[0025] The specific implementation of the utility model will be described in detail in combination with specific examples.
[0026] Please refer to Figures 1 to 5 The utility model provides a new type of caving support of large mining height fully mechanized caving, the new type of caving support of large mining height fully mechanized caving includes base 1, shelter support beam 5, operating platform 7, protection structure and adjusting structure, the bottom symmetry of base 1 is installed with support plate 2, the top symmetry of base 1 is installed with hydraulic rod 3, the top of hydraulic rod 3 is installed with shelter beam 4, one side of shelter beam 4 is rotatably connected with shelter support beam 5, the bottom of shelter support beam 5 is rotatably connected with connecting rod 6, the bottom of connecting rod 6 is rotatably connected with base 1, the top of base 1 is fixedly connected with operating platform 7, operating platform 7 top is installed with operating lever 8, and operating lever 8 is electrically connected with hydraulic rod 3, and the top of operating platform 7 is installed with protection structure for protecting operating lever 8, and the bottom of base 1 is installed with adjusting structure for adjusting the lifting of support plate 2, and the bottom surface of support plate 2 is designed as inclined plane around the top of operating platform 7, and the bottom surface of base 1 is located on the same horizontal line with the bottom surface of base 1;
[0027] It should be noted that when the support plate 2 is not extended from the base 1, the stress of the device is borne by the support plate 2 and the base 1 together, thereby reducing the stress of the support plate 2, and when the coal debris or other sundries fall into the device, the sundries will slide down from the inclined surface on the top of the operating platform 7;
[0028] Please refer to Figures 2 to 4 The protection structure includes: a clamping block 9, a protection plate 10, an extension block 11, a rotating shaft 12, a torque spring 13, and a limiting block 14, one side of the operating platform 7 is fixedly connected with the clamping block 9 symmetrically, the top of the operating platform 7 is rotatably connected with the protection plate 10, one side of the protection plate 10 close to the clamping block 9 is fixedly connected with the extension block 11 symmetrically, the bottom of the extension block 11 is rotatably connected with the rotating shaft 12, both ends of the rotating shaft 12 are fixedly connected with the torque spring 13, the other end of the torque spring 13 is fixedly connected with the inside of the extension block 11, the middle part of the rotating shaft 12 is fixedly connected with the limiting block 14, the limiting block 14 is clamped with the clamping block 9, the bottom of the clamping block 9 is designed as inclined, and the top of the limiting block 14 is designed as inclined;
[0029] It should be noted that the clamping surface of the limiting block 14 and the clamping block 9 is inclined, which can prevent the limiting block 14 from not being able to fit when clamped with the clamping block 9 due to the space problem of the rotating path;
[0030] Please refer to Figure 2 And Figure 5The adjusting structure comprises a threaded rod 15, a hollow worm wheel 16, a first worm 17, a second worm wheel 18 and a second worm 19, the top of each of the two support plates 2 is fixedly connected with the threaded rod 15 in a symmetrical mode, the bottom of the base 1 is fixedly connected with a plurality of groups of hollow worm wheels 16 in a symmetrical mode, the inner wall of the hollow worm wheel 16 is provided with a thread, the hollow worm wheel 16 is in meshing connection with the threaded rod 15, the first worm 17 is rotatably connected in the base 1 in a symmetrical mode, the first worm 17 is in meshing connection with the hollow worm wheel 16, the middle portion of the outer wall of the first worm 17 is fixedly connected with the second worm wheel 18, the second worm 19 is rotatably connected in the base 1 in a symmetrical mode, the second worm 19 is in meshing connection with the second worm wheel 18, the base 1 is fixedly connected with a motor 20 in a symmetrical mode in the inside, the output end of the motor 20 is fixedly connected with one end of the second worm 19, the side surface of the threaded rod 15 is provided with an internal spline, the base 1 is provided with an external spline matched with the internal spline, and the threaded rod 15 is slidably connected with the base 1 through the internal spline and the external spline;
[0031] It should be noted that the cooperation of the internal spline and the external spline limits the threaded rod 15 to move only along the extension direction of the spline and cannot rotate along with the hollow worm wheel 16.
[0032] The working principle of the novel coal drawing support for large mining height fully mechanized mining is as follows:
[0033] Overall support and height adjustment:
[0034] The base 1 is symmetrically provided with the support plates 2 at the bottom, when the support is placed on the working face in the well, the support plates 2 and the base 1 jointly bear the weight of the support and the equipment above, if it is necessary to adjust the height of the support, the hydraulic rod 3 can be used, the hydraulic rod 3 is installed at the top of the base 1, the top of the hydraulic rod 3 is connected with the shield beam 4, by controlling the extension and retraction of the hydraulic rod 3, the height of the shield beam 4 can be adjusted, so that the supporting height of the whole support is changed, so as to adapt to different mining height requirements.
[0035] Operation control:
[0036] The operator stands on the operation table 7 fixedly connected at the top of the base 1, controls the operation of the hydraulic rod 3 by operating the operation rod 8, the operation rod 8 is electrically connected with the hydraulic rod 3, the operation instruction of the operator can be quickly and accurately transmitted to the hydraulic rod 3, so that the precise control of the height of the support is realized.
[0037] Operation rod 8 protection:
[0038] In order to prevent the operating lever 8 from being damaged in the complex downhole environment, a protection structure is installed on the operating table 7, which comprises a clamping block 9, a protection plate 10, an extension block 11, a rotating shaft 12, a torque spring 13 and a limiting block 14. When the operating lever 8 is not needed to be operated, the protection plate 10 can be rotated to cover the operating lever 8. The rotation of the protection plate 10 drives the extension block 11 fixedly connected with one side of the protection plate 10 to rotate. The bottom of the extension block 11 is rotatably connected with the rotating shaft 12. The torque spring 13 at both ends of the rotating shaft 12 makes the rotating shaft 12 have a tendency of automatic reset. When the limiting block 14 is close to the clamping block 9 by rotating the protection plate 10, the path space problem causes the limiting block 14 to be pressed by the clamping block 9 to rotate. At this time, the torque spring 13 is twisted to accumulate elastic potential energy. When the protection plate 10 completely adheres to the operating table 7, the torque spring 13 will reset, thereby prompting the rotating shaft 12 to automatically reset, so as to ensure that the limiting block 14 can be smoothly clamped with the clamping block 9 to fix the protection plate 10.
[0039] Smooth adjustment:
[0040] In the complex downhole terrain, in order to ensure the stability of the support, an adjusting structure is installed at the bottom of the base 1. The top of each support plate 2 is fixedly connected with a threaded rod 15. The bottom of the base 1 is fixed with a plurality of hollow worm gears 16. The inner wall of the hollow worm gear 16 is threaded and engaged with the threaded rod 15. The inside of the base 1 is symmetrically rotatably connected with a first worm 17 which is engaged with the hollow worm gear 16. The middle outer wall of the first worm 17 is fixed with a second worm gear 18. The second worm gear 18 is engaged with a second worm 19 which is symmetrically rotatably connected inside the base 1. When it is needed to adjust the stability of the support, the motor 20 fixedly arranged inside the base 1 is started. The output end of the motor 20 drives the second worm 19 to rotate. The second worm 19 drives the second worm gear 18 to rotate, thereby making the first worm 17 rotate. The first worm 17 drives the hollow worm gear 16 to rotate. Since the side surface of the threaded rod 15 is provided with an inner spline which cooperates with the outer spline of the base 1, the threaded rod 15 can only move along the spline direction and cannot rotate with the hollow worm gear 16. Finally, the height of the support plate 2 is adjusted by the lifting of the threaded rod 15, so that the support reaches a stable state. When the support plate 2 is not extended out of the base 1, the bottom surface of the support plate 2 is on the same horizontal line with the bottom surface of the base 1. At this time, the stress of the device is borne by the support plate 2 and the base 1, thereby reducing the stress of the support plate 2.
[0041] The above is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process conversion according to the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A new type of caving support for fully mechanized top coal caving mining, characterized in that, The utility model relates to a kind of hydraulic support frame, including: Base (1), the bottom of base (1) is symmetrically equipped with support plate (2), the top of base (1) is symmetrically equipped with hydraulic rod (3), the top of hydraulic rod (3) is equipped with shelter beam (4); Cover support beam (5), one side of shelter beam (4) is rotatably connected with cover support beam (5), the bottom of cover support beam (5) is rotatably connected with connecting rod (6), the bottom of connecting rod (6) is rotatably connected with base (1); Operation platform (7), the top of base (1) is fixedly connected with operation platform (7), operation platform (7) top is equipped with operating lever (8), operating lever (8) is electrically connected with hydraulic rod (3); Protective structure, the top of operation platform (7) is equipped with protective structure for protecting operating lever (8); Adjusting structure, the bottom of base (1) is equipped with adjusting structure for adjusting the lifting of support plate (2).
2. The new type of caving support for fully mechanized top coal caving mining according to claim 1, characterized in that, Protective structure includes: clamping block (9), protection plate (10), extension block (11), pivot (12), torque spring (13) and limit block (14), one side of operation platform (7) is symmetrically fixedly connected with clamping block (9), the top of operation platform (7) is rotatably connected with protection plate (10), the side close to clamping block (9) of protection plate (10) is symmetrically fixedly connected with extension block (11), the bottom of extension block (11) is rotatably connected with pivot (12), both ends of pivot (12) are fixedly connected with torque spring (13), the other end of torque spring (13) is fixedly connected with the inside of extension block (11), the middle of pivot (12) is fixedly connected with limit block (14), limit block (14) is clamped with clamping block (9).
3. The new type of caving support for fully mechanized top coal caving mining according to claim 1, characterized in that, Adjusting structure includes: threaded rod (15), hollow worm gear (16), first worm (17), second worm gear (18) and second worm (19), the top of two support plates (2) is symmetrically fixedly connected with threaded rod (15), the bottom of base (1) is symmetrically fixedly connected with multiple hollow worm gears (16), the inner wall of hollow worm gear (16) is provided with screw thread, hollow worm gear (16) is meshingly connected with threaded rod (15), first worm (17) is rotatably connected in the inside of base (1), first worm (17) is meshingly connected with hollow worm gear (16), the middle outer wall of first worm (17) is fixedly connected with second worm gear (18), second worm (19) is rotatably connected in the inside of base (1), second worm (19) is meshingly connected with second worm gear (18).
4. The new type of caving support for fully mechanized top coal caving mining according to claim 2, characterized in that, The bottom of clamping block (9) is designed to be inclined, the top of limit block (14) is designed to be inclined.
5. The new type of caving support for fully mechanized top coal caving mining according to claim 1, characterized in that, The top of operation platform (7) is designed to be inclined around.
6. The new type of caving support for fully mechanized top coal caving mining according to claim 3, characterized in that, Base (1) is symmetrically fixedly connected with motor (20) in the inside, the output end of motor (20) is fixedly connected with one end of second worm (19).
7. The new type of caving support for fully mechanized top coal caving mining according to claim 3, characterized in that, The side surface of threaded rod (15) is provided with inner spline, base (1) is provided with outer spline for matching connection with inner spline, threaded rod (15) is slidably connected with base (1) through the design of inner spline and outer spline.
8. The new type of caving support for fully mechanized top coal caving mining according to claim 1, characterized in that, The bottom surface of support plate (2) and the bottom surface of base (1) are located on the same horizontal line.