A large-angle inclination adjusting device for a fully mechanized coal mining face

Abstract

The utility model belongs to the mining technical field, and disclose a kind of big angle of fully mechanized working face adjustment posture adjusting device, including base, the base one end is upturned and is connected with auxiliary support plate by first connecting pivot, the top of auxiliary support plate is connected with main support plate by second connecting pivot, and the main support plate is equipped with positioning sliding slot, the positioning sliding slot is slidably connected with movable plate by positioning slide, locking assembly is connected between movable plate and main support plate, main hydraulic cylinder and auxiliary hydraulic cylinder are arranged between main support plate and base, locking assembly facilitates the disassembly replacement of movable plate after abrasion, greatly reduce later maintenance working hours and cost, significantly improve the maintainability and service life of device, anchoring component adopts inclined layout, enhance the fixed stability of base, effectively prevent the device from slipping during big angle adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of mining technology, specifically a device for adjusting the large-angle inclined mining posture of a fully mechanized mining face. Background Technology

[0002] The large-angle inclined mining posture adjustment device for fully mechanized mining faces is a key piece of equipment for adapting to fully mechanized mining operations in steeply inclined coal seams. Through the coordinated action of multiple components, it dynamically adjusts the spatial posture of structures such as hydraulic supports and support plates, effectively avoiding risks such as equipment slippage and support collapse, ensuring the straightness of the working face and the continuity of mining. It is one of the core devices for achieving efficient and safe recovery of coal resources under complex geological conditions.

[0003] Chinese Patent Application No. 202322133785.7 discloses a large-angle hydraulic support, comprising: a main hydraulic cylinder and an auxiliary hydraulic cylinder respectively hinged to a base; one end of the main hydraulic cylinder is hinged to the underside of a main support plate, and one end of the auxiliary hydraulic cylinder is hinged to the underside of an auxiliary support plate; the two ends of the auxiliary support plate are respectively hinged to the base and the main support plate; a movable plate is fixedly connected to the main support plate, the movable plate comprising: a small plate hinged to a ball joint seat, the ball joint seat being fixedly connected to the top of the main support plate; based on the working characteristics of the ball joint, the movable plate changes the force direction in a local area on the hydraulic support plate, reducing the force that causes the soil layer to slide along the support surface, thus reducing the risk of soil landslides; the protrusions on the movable plate increase the friction between the hydraulic support plate and the soil layer, and at the same time, the protrusions embedded in the soil layer above the tunnel also act as anchors for the soil, thereby increasing the hydraulic support's ability to resist soil landslides.

[0004] However, the above structure has the following shortcomings: First, the base lacks a stable and reliable fixing structure, making it difficult to form an effective anchor in the steep working face. It is prone to overall slippage due to changes in the coal seam dip angle or uneven stress on the equipment, affecting the stability of the adjustment. Second, the movable plate and the main support plate are mostly connected in a fixed manner. When the movable plate wears due to long-term friction and load, it cannot be easily disassembled and replaced. This not only increases maintenance time and cost, but may also lead to a decrease in the accuracy of the working face tilt adjustment due to untimely replacement, or even cause equipment coordination failure.

[0005] Therefore, a large-angle inclined mining posture adjustment device for fully mechanized mining faces is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a large-angle inclined mining posture adjustment device for fully mechanized mining faces, which has the advantages of reliable and convenient locking, stable and adaptable anchoring, and precise and efficient posture adjustment, and can ensure safe and efficient mining of large-angle fully mechanized mining faces.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for adjusting the large-angle inclined mining posture of a fully mechanized mining face, comprising a base, one end of which is tilted upwards and connected to a secondary support plate via a first connecting shaft, the top end of which is connected to a main support plate via a second connecting shaft, a positioning groove on the main support plate, a movable plate slidably connected to the positioning groove via a positioning slide bar, a locking assembly connecting the movable plate and the main support plate, a main hydraulic cylinder and a secondary hydraulic cylinder being disposed between the main support plate and the base, both ends of the main hydraulic cylinder being connected to the base and the main support plate respectively via a first supporting shaft, the first supporting shaft being located away from the secondary support plate, both ends of the secondary hydraulic cylinder being connected to the base and the main support plate respectively via a second supporting shaft, the second supporting shaft being located close to the secondary support plate, and anchoring assemblies being disposed on both sides of the base.

[0008] Preferably, the bottom of the base, the outer surface of the secondary support plate, and the top surface of the main support plate are all provided with anti-slip protrusions.

[0009] Preferably, one end of the positioning groove is an open structure and the other end is a closed structure.

[0010] Preferably, the locking assembly includes two fixing blocks fixed to the bottom of the movable plate, a bidirectional hydraulic cylinder is fixed on the side of the main support plate at a position corresponding to the fixing blocks, the piston rod of the bidirectional hydraulic cylinder is connected to a locking rod, a locking hole is opened on the fixing block at a position corresponding to the locking rod, and the locking rod extends into the locking hole.

[0011] Preferably, a circular baffle is fixed on the locking rod near the bidirectional hydraulic cylinder, and the diameter of the circular baffle is larger than the diameter of the locking hole.

[0012] Preferably, the anchoring assembly includes a fixed seat that is fixedly connected to the base, a small hydraulic cylinder is mounted on the fixed seat, the piston rod of the small hydraulic cylinder is connected to a movable seat, and an anchoring rod is fixedly connected to the movable seat.

[0013] Preferably, the anchoring components are inclined and symmetrically arranged on both sides of the base.

[0014] Preferably, a guide seat is fixed on the base at a position corresponding to the anchor rod, and a guide hole is provided on the guide seat, through which the anchor rod passes.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The locking assembly of this utility model adopts a structure in which a two-way hydraulic cylinder drives the locking rod to extend into the locking hole of the fixed block. Combined with the round baffle anti-loosening design, it realizes quick locking and unlocking between the movable plate and the main support plate. The operation is convenient and the locking reliability is high, effectively avoiding the risk of loosening under large tilt angle conditions. On the other hand, this structure facilitates the disassembly and replacement of the movable plate after wear, greatly reducing the maintenance time and cost in the later stage, and significantly improving the maintainability and service life of the device.

[0017] 2. The anchoring assembly of this utility model adopts an inclined layout. The anchoring rod is driven by a small hydraulic cylinder and precisely guided by the guide hole of the guide seat, so that the anchoring rod can be stably inserted into the bottom plate of the working face. This not only enhances the fixing stability of the base and effectively prevents the device from slipping during large-angle tilting, but also avoids the failure problem caused by the tilt of the anchoring rod. It can adapt to bottom plates with different hardness and coal seam dip angle changes, providing a solid foundation support for the overall attitude adjustment of the device, and further ensuring the safety and accuracy of tilting operations in large-angle fully mechanized mining faces. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the anchoring component of this utility model;

[0021] Figure 4 This is a schematic diagram of the locking component of this utility model;

[0022] Figure 5 This is a schematic diagram of the main support plate of this utility model.

[0023] In the diagram: 1. Base; 2. First connecting shaft; 3. Secondary support plate; 4. Second connecting shaft; 5. Main support plate; 6. Positioning groove; 7. Positioning slide bar; 8. Movable plate;

[0024] 9. Locking assembly; 91. Fixing block; 92. Two-way hydraulic cylinder; 93. Locking rod; 94. Locking hole; 95. Circular baffle;

[0025] 10. Main hydraulic cylinder; 11. Auxiliary hydraulic cylinder; 12. First support shaft; 13. Second support shaft;

[0026] 14. Anchoring assembly; 141. Fixed seat; 142. Small hydraulic cylinder; 143. Movable seat; 144. Anchor rod; 145. Guide seat; 146. Guide hole;

[0027] 15. Anti-slip protrusions. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 5As shown, this utility model provides a large-angle inclined mining posture adjustment device for fully mechanized mining faces, including a base 1. The base 1 serves as the supporting foundation of the device. Its raised end design provides a reasonable fulcrum for the rotation of the auxiliary support plate 3. Combined with the anti-slip protrusion 15 at the bottom and the anchoring components 14 on both sides, it can significantly enhance the overall stability of the device in large-angle working faces. One end of the base 1 is raised upward and connected to the auxiliary support plate 3 through a first connecting shaft 2. The top of the auxiliary support plate 3 is connected to the main support plate 5 through a second connecting shaft 4. The auxiliary support plate 3 and the main support plate 5 form a linkage structure through the shaft, which can coordinately adjust the support angle to adapt to the dynamic changes in the coal seam dip angle. The anti-slip protrusion on the top surface of the main support plate 5... 15. This increases friction with the upper equipment, preventing relative slippage. A positioning groove 6 is provided on the main support plate 5. The positioning groove 6 is slidably connected to the movable plate 8 via a positioning slide bar 7. The sliding cooperation between the positioning groove 6 and the positioning slide bar 7 achieves flexible position adjustment of the movable plate 8 while ensuring guiding accuracy during movement. The open structure of the positioning groove 6 facilitates the installation and disassembly of the movable plate 8, while the closed end limits the maximum movement distance of the movable plate 8 to prevent slippage. A locking assembly 9 connects the movable plate 8 and the main support plate 5. The locking assembly 9 includes two fixing blocks 91 fixed to the bottom of the movable plate 8. A bidirectional hydraulic cylinder 9 is fixed to the side of the main support plate 5 at a position corresponding to the fixing blocks 91. 2. The piston rod of the bidirectional hydraulic cylinder 92 is connected to a locking rod 93. A locking hole 94 is provided on the fixed block 91 at a position corresponding to the locking rod 93. The locking rod 93 extends into the locking hole 94. This structure, driven by the bidirectional hydraulic cylinder 92, allows the locking rod 93 to extend into the locking hole 94, achieving rapid locking and unlocking of the movable plate 8 and the main support plate 5. The operation is efficient and the locking is reliable. The circular baffle 95 effectively prevents the locking rod 93 from extending excessively and prevents the locking rod from loosening under vibration conditions, greatly improving the locking stability and facilitating the replacement and maintenance of the movable plate 8 after wear. It is worth noting that a circular baffle 95 is fixed on the locking rod 93 near the bidirectional hydraulic cylinder 92. The diameter of the circular baffle 95 is greater than that of the locking rod 93. The diameter of the locking hole 94 is such that a main hydraulic cylinder 10 and an auxiliary hydraulic cylinder 11 are provided between the main support plate 5 and the base 1. Both ends of the main hydraulic cylinder 10 are connected to the base 1 and the main support plate 5 respectively through the first support shaft 12. The first support shaft 12 is located away from the auxiliary support plate 3. Both ends of the auxiliary hydraulic cylinder 11 are connected to the base 1 and the main support plate 5 respectively through the second support shaft 13. The second support shaft 13 is located close to the auxiliary support plate 3. The differentiated layout of the main hydraulic cylinder 10 and the auxiliary hydraulic cylinder 11 can precisely adjust the pitch angle of the main support plate 5 through coordinated extension and retraction, adapting to the tilt adjustment requirements of coal seams with different dip angles, and improving the flexibility and accuracy of attitude adjustment. Anchoring components 14 are provided on both sides of the base 1.

[0030] Specifically, the bottom of the base 1, the outer surface of the secondary support plate 3, and the top surface of the main support plate 5 are all provided with anti-slip protrusions 15. The anti-slip protrusions 15 increase the friction coefficient of the contact surface, thereby improving the anti-slip performance of the device and the base plate and the equipment above in multiple dimensions and reducing the risk of relative displacement.

[0031] Furthermore, one end of the positioning groove 6 is designed as an open structure, and the other end is designed as a closed structure.

[0032] Furthermore, the locking assembly 9 includes two fixing blocks 91 fixed to the bottom of the movable plate 8. A bidirectional hydraulic cylinder 92 is fixed on the side of the main support plate 5 at a position corresponding to the fixing blocks 91. The piston rod of the bidirectional hydraulic cylinder 92 is connected to a locking rod 93. A locking hole 94 is opened on the fixing block 91 at a position corresponding to the locking rod 93. The locking rod 93 extends into the locking hole 94.

[0033] It is worth noting that the anchoring assembly 14 includes a fixed seat 141 that is fixedly connected to the base 1. A small hydraulic cylinder 142 is installed on the fixed seat 141. The piston rod of the small hydraulic cylinder 142 is connected to a movable seat 143. An anchor rod 144 is fixedly connected to the movable seat 143. The inclined setting of the anchoring assembly 14 allows the anchor rod 144 to be inserted into the base plate at the optimal angle, thereby enhancing the anchoring force. The symmetrical layout ensures that the base 1 is subjected to balanced forces and prevents unilateral displacement. The guide hole 146 of the guide seat 145 can constrain the movement trajectory of the anchor rod 144, avoiding anchoring failure caused by force deviation. It is adaptable to base plate conditions with different hardness and significantly improves the fixing reliability of the base 1.

[0034] It is worth mentioning that the anchoring component 14 is set at an angle and is symmetrically arranged on both sides of the base 1.

[0035] It is worth emphasizing that a guide seat 145 is fixed on the base 1 at the position corresponding to the anchor rod 144. A guide hole 146 is opened on the guide seat 145, and the anchor rod 144 passes through the guide hole 146.

[0036] Among them, the bidirectional hydraulic cylinder 92, the main hydraulic cylinder 10, the auxiliary hydraulic cylinder 11, and the small hydraulic cylinder 142 are existing technologies and will not be described in detail. At the same time, this utility model also includes a power supply, a controller, and a switch, which are not the main technical points of this patent and will not be described in detail.

[0037] Working principle and process: Before operation, the device is initially fixed by the anchoring components 14 on both sides of the base 1. That is, the small hydraulic cylinder 142 on the fixed seat 141 drives the piston rod to push the movable seat 143, which in turn drives the anchor rod 144 to be stably inserted into the bottom plate of the working face along the guide hole 146 of the guide seat 145. The anti-slip protrusions 15 on the bottom of the base 1 enhance friction and prevent the base 1 from slipping. Then, according to the adjustment requirements of the steeply inclined coal seam, the main hydraulic cylinder 10 and the auxiliary hydraulic cylinder 11 between the main support plate 5 and the base 1 are activated. Since the main hydraulic cylinder 10 is connected to a position away from the auxiliary support plate 3 through the first support shaft 12 and the auxiliary hydraulic cylinder 11 is connected to a position close to the auxiliary support plate 3 through the second support shaft 13, when the two extend and retract together, they can drive the main support plate 143 to move. Plate 5 rotates around the second connecting shaft 4, and auxiliary support plate 3 rotates around the first connecting shaft 2, thereby adjusting the pitch angle of the main support plate 5 to match the coal seam dip angle. When installing the movable plate 8, the movable plate 8 is pushed along the positioning slide 6 of the main support plate 5. When the movable plate 8 reaches the target position, the locking assembly 9 is activated. The bidirectional hydraulic cylinder 92 on the side of the main support plate 5 drives the locking rod 93 to extend into the locking hole 94 of the bottom fixing block 91 of the movable plate 8. At the same time, the round baffle 95 prevents the locking rod 93 from loosening or over-extending, thus achieving a stable connection between the movable plate 8 and the main support plate 5. If the movable plate 8 is worn and needs to be replaced, simply control the bidirectional hydraulic cylinder 92 to retract the locking rod 93, and the old movable plate 8 can be taken out along the positioning slide 6 and replaced with a new one, ensuring the continuous and stable operation of the device.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the attitude of a fully mechanized longwall mining face at a large angle, comprising a base (1), characterized in that: One end of the base (1) is tilted upwards and connected to a secondary support plate (3) via a first connecting shaft (2). The top of the secondary support plate (3) is connected to a main support plate (5) via a second connecting shaft (4). A positioning groove (6) is provided on the main support plate (5). The positioning groove (6) is slidably connected to a movable plate (8) via a positioning slide bar (7). A locking assembly (9) is connected between the movable plate (8) and the main support plate (5). A main hydraulic system is provided between the main support plate (5) and the base (1). The main hydraulic cylinder (10) and the auxiliary hydraulic cylinder (11) are connected to the base (1) and the main support plate (5) respectively through the first support shaft (12). The first support shaft (12) is located away from the auxiliary support plate (3). The auxiliary hydraulic cylinder (11) is connected to the base (1) and the main support plate (5) respectively through the second support shaft (13). The second support shaft (13) is located close to the auxiliary support plate (3). Anchoring components (14) are provided on both sides of the base (1).

2. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 1, characterized in that: The bottom of the base (1), the outer surface of the secondary support plate (3), and the top surface of the main support plate (5) are all provided with anti-slip protrusions (15).

3. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 1, characterized in that: One end of the positioning groove (6) is an open structure, and the other end is a closed structure.

4. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 1, characterized in that: The locking assembly (9) includes two fixing blocks (91) fixed to the bottom of the movable plate (8). A bidirectional hydraulic cylinder (92) is fixed on the side of the main support plate (5) at a position corresponding to the fixing blocks (91). The piston rod of the bidirectional hydraulic cylinder (92) is connected to a locking rod (93). A locking hole (94) is opened on the fixing block (91) at a position corresponding to the locking rod (93). The locking rod (93) extends into the locking hole (94).

5. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 4, characterized in that: A circular baffle (95) is fixed on the locking rod (93) near the bidirectional hydraulic cylinder (92), and the diameter of the circular baffle (95) is larger than the diameter of the locking hole (94).

6. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 1, characterized in that: The anchoring assembly (14) includes a fixed seat (141) that is fixedly connected to the base (1), a small hydraulic cylinder (142) is installed on the fixed seat (141), the piston rod of the small hydraulic cylinder (142) is connected to a movable seat (143), and the movable seat (143) is fixedly connected to an anchor rod (144).

7. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 6, characterized in that: The anchoring component (14) is inclined and is symmetrically arranged on both sides of the base (1).

8. The device for adjusting the large-angle inclined mining posture of a fully mechanized mining face according to claim 6, characterized in that: A guide seat (145) is fixed on the base (1) at a position corresponding to the anchor rod (144). A guide hole (146) is provided on the guide seat (145), and the anchor rod (144) passes through the guide hole (146).

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