A new hydraulic support auxiliary anti-falling mechanism

Abstract

The utility model relates to a novel hydraulic support auxiliary anti -falling mechanism belongs to coal fully -mechanized mining support technical field, including integral rear connecting rod, two left and right symmetries sleeve are welded on integral rear connecting rod, one piece of side baffle is fixedly arranged on the left and right sides of integral rear connecting rod respectively, two sleeves are inserted on the side baffle of both sides respectively at the end of mutual far away, the anti -falling jack is fixedly set up in one of the sleeve inside, the support rod is fixedly set up in another sleeve inside, the outside one end of support rod is fixedly set up with anti -falling plug, the support rod and anti -falling jack in two sleeve interiors can replace each other, solved the problem that the anti -falling anti -skidding function of current hydraulic support is not perfect.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining support technology, specifically relating to a novel hydraulic support auxiliary anti-tipping mechanism. Background Technology

[0002] my country boasts abundant coal resources, with mines scattered throughout the country. Geological conditions vary widely, and many mines have inclined working faces. When mining in inclined faces, hydraulic supports can tip over or slide as they move forward. Hydraulic supports typically weigh tens of tons, making tipping and sliding extremely dangerous. In severe cases, they can become uncontrollable, destroying equipment and working spaces below and seriously threatening personal safety. Furthermore, the instability of one hydraulic support can trigger a chain reaction of instability in a series of supports below it, leading to the collapse of the entire working face system with unimaginable consequences.

[0003] With increasingly stringent safety requirements in coal mining, the robust anti-tipping and anti-slip features of hydraulic supports are essential for the efficient and safe operation of the entire coal face during the mining of steeply inclined coal seams. Utility Model Content

[0004] This utility model overcomes the shortcomings of the prior art and proposes a new type of hydraulic support auxiliary anti-tipping mechanism; solving the problem of imperfect anti-tipping and anti-slip functions of current hydraulic supports.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A novel hydraulic support auxiliary anti-tipping mechanism includes an integral rear connecting rod with two symmetrical sleeves welded to it. A side baffle is fixedly installed on each side of the integral rear connecting rod. The ends of the two sleeves that are far apart from each other are inserted into the side baffles on both sides. An anti-tipping jack is fixedly installed inside one sleeve, and a support rod is fixedly installed inside the other sleeve. An anti-tipping plug is fixedly installed on the outer end of the support rod. The support rod and the anti-tipping jack inside the two sleeves can be interchanged.

[0007] Furthermore, the sleeve is a cylindrical structure with openings at both ends, and the axes of the two sleeves are kept coincident. A fixing seat is fixedly installed between the two sleeves, and the fixing seat is fixedly connected to the overall rear connecting rod. The openings at the ends of the two sleeves that are close to each other are connected to the interior of the fixing seat.

[0008] Furthermore, one end of the anti-tipping jack's cylinder bottom extends into the interior of the fixed seat, and one end of the anti-tipping jack's piston rod faces the side of the sleeve away from the fixed seat.

[0009] Furthermore, one end of the cylinder bottom of the anti-tipping jack is connected to the fixed seat via a pin. One end of the pin extends to the outside of the fixed seat, and a stop pin seat is fitted onto the outside end of the pin. The stop pin seat is fixedly set on the outside surface of the fixed seat. After the U-shaped pin passes through the outside end of the pin, it connects to the stop pin seat, thereby connecting one end of the cylinder bottom of the anti-tipping jack to the fixed seat.

[0010] Furthermore, when the piston rod of the anti-tipping jack is in the retracted state, the end of the piston rod is located inside the sleeve; when the piston rod of the anti-tipping jack is in the extended state, the end of the piston rod extends to the outside of the side baffle on the same side.

[0011] Furthermore, the support rod is a round rod structure, and a plug hole is provided at the end of the support rod away from the anti-overturning end, and the plug hole on the support rod extends into the interior of the fixing base.

[0012] Furthermore, the insertion hole on the support rod is connected to the fixed seat through a pin. One end of the pin extends to the outside of the fixed seat, and a stop pin seat is sleeved on the outside end of the pin. The stop pin seat is fixedly set on the outside surface of the fixed seat. After the U-shaped pin passes through the outside end of the pin, it connects to the stop pin seat, thereby connecting the inner end of the support rod to the fixed seat.

[0013] Furthermore, a support ring is fixedly installed on the outer side of the middle part of the support rod, and the outer side of the support ring abuts against the inner side of the sleeve.

[0014] Furthermore, the anti-backflow plug on the support rod is located at the opening of the sleeve away from the fixed seat, and the anti-backflow plug seals the opening at the outer end of the sleeve.

[0015] Furthermore, the side baffle is perpendicular to the axis of the sleeve, and multiple stiffening plates are fixedly installed on the inner side of the side baffle.

[0016] The beneficial effects of this utility model compared to the prior art are as follows: When conventional hydraulic supports are used for moving inclined coal seams, they naturally shift downwards under gravity, making it difficult to maintain their intended straightness and prone to jamming with adjacent supports. The push rods and connectors of the hydraulic supports must withstand enormous tensile, compressive, and shear stresses in the inclined state. The connection strength of conventional hydraulic supports may be insufficient, leading to breakage and further exacerbating instability. The auxiliary anti-tipping mechanism provided in this application adds a set of anti-tipping jacks to the integral rear connecting rod, increasing the lateral thrust. Combined with the lateral push jacks of the top beam and shield beam, and the bottom adjustment jacks, the hydraulic supports are subjected to a uniform lateral force during the moving process, making the movement more stable and preventing jamming with adjacent supports. This also reduces the shear stress that the hydraulic support push rods and connectors must withstand in the inclined state, improving the stability of the hydraulic supports and the safety of the working face. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a three-dimensional schematic diagram of the entire utility model; Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a plan view of the entire utility model; Figure 4 This is a schematic diagram of the connection of this utility model on a hydraulic support; Among them, 1 is the integral rear connecting rod, 2 is the sleeve, 3 is the side baffle, 4 is the anti-tipping jack, 5 is the support rod, 6 is the anti-tipping block, 7 is the fixed seat, 8 is the pin, 9 is the stop pin seat, 10 is the U-pin, and 11 is the support ring. Detailed Implementation

[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0019] like Figure 1 As shown in Figure 4, this utility model provides a novel hydraulic support auxiliary anti-tipping mechanism, including an integral rear connecting rod 1. Two symmetrical sleeves 2 are welded onto the integral rear connecting rod 1. A side baffle 3 is fixedly installed on each of the left and right sides of the integral rear connecting rod 1. The ends of the two sleeves 2 that are far apart from each other are respectively inserted into the side baffles 3 on both sides. An anti-tipping jack 4 is fixedly installed inside one of the sleeves 2, and a support rod 5 is fixedly installed inside the other sleeve 2. An anti-tipping plug 6 is fixedly installed on the outer end of the support rod 5. The support rod 5 and the anti-tipping jack 4 inside the two sleeves 2 can be interchanged.

[0020] The sleeve 2 is a cylindrical structure with openings at both ends, and the axes of the two sleeves 2 are kept coincident. A fixing seat 7 is fixedly installed between the two sleeves 2, and the fixing seat 7 is fixedly connected to the overall rear connecting rod 1. The openings at the close ends of the two sleeves 2 are connected to the interior of the fixing seat 7.

[0021] One end of the cylinder bottom of the anti-tipping jack 4 extends into the interior of the fixed seat 7, and one end of the piston rod of the anti-tipping jack 4 faces the sleeve 2 away from the fixed seat 7. One end of the cylinder bottom of the anti-tipping jack 4 is connected to the fixed seat 7 via a pin 8, and one end of the pin 8 extends to the outside of the fixed seat 7. A stop pin seat 9 is sleeved on the outer end of the pin 8, and the stop pin seat 9 is fixedly mounted on the outer surface of the fixed seat 7. A U-shaped pin 10 passes through the outer end of the pin 8 and connects to the stop pin seat 9, thereby connecting one end of the cylinder bottom of the anti-tipping jack 4 to the fixed seat 7. When the piston rod of the anti-tipping jack 4 is in the retracted state, the end of the piston rod is located inside the sleeve 2; when the piston rod of the anti-tipping jack 4 is in the extended state, the end of the piston rod extends to the outside of the side baffle 3 on the same side.

[0022] The support rod 5 is a round rod structure. A insertion hole is provided at the end of the support rod 5 furthest from the anti-backflow block 6, extending into the interior of the fixing base 7. The insertion hole on the support rod 5 is connected to the fixing base 7 via a pin 8, one end of which extends to the outside of the fixing base 7. A stop pin seat 9 is sleeved on the outer end of the pin 8, fixedly mounted on the outer surface of the fixing base 7. A U-shaped pin 10 passes through the outer end of the pin 8 and connects to the stop pin seat 9, thus connecting the inner end of the support rod 5 to the fixing base 7. A support ring 11 is fixedly mounted on the outer side of the middle of the support rod 5. The outer surface of the support ring 11 abuts against the inner surface of the sleeve 2, ensuring the support rod 5 remains stable inside the sleeve 2 without shaking. The anti-backflow block 6 on the support rod 5 is located at the opening of the sleeve 2 furthest from the fixing base 7, sealing the outer opening of the sleeve 2.

[0023] The side baffle 3 serves as a support plate for the anti-tipping jack 4 when the hydraulic support moves forward. It needs to ensure that the anti-tipping jack 4 can still rest on the side baffle 3 after the hydraulic support moves forward one step. The side baffle 3 is perpendicular to the axis of the sleeve 2. Multiple stiffening plates are fixedly installed on the inner side of the side baffle 3 to ensure that the side baffle 3 has sufficient strength and is not easily deformed during the process of supporting the anti-tipping jack 4 and the rock retainer.

[0024] The working principle of this utility model is as follows: When installing the auxiliary anti-tipping mechanism, the anti-tipping jack 4 is installed inside the sleeve 2 facing downhill using pin 8 and U-pin 10, and the support rod 5 and anti-tipping plug 6 are installed inside the sleeve 2 facing uphill using pin 8 and U-pin 10. By configuring an anti-tipping plug 6 of a certain strength at the outer opening of the sleeve 2 where the anti-tipping jack 4 is not installed, coal and gangue are prevented from entering the sleeve 2, while also serving as temporary support for the anti-tipping jack 4.

[0025] When the hydraulic support is moved, the anti-tipping jack 4 is extended and placed against the side baffle 3 of the hydraulic support on the downhill side. Together with the bottom adjustment jack and the side push jack, they provide lateral force to the hydraulic support and push the hydraulic support to move forward smoothly.

[0026] An anti-tipping jack 4 is added to the rear connecting rod 1 of the hydraulic support. In conjunction with the original side-pushing mechanism and bottom-adjusting mechanism of the hydraulic support, the hydraulic support can have active side thrust at all four points close to the top beam, shield beam, rear connecting rod and base, so that the hydraulic support has a larger and more uniform lateral force.

[0027] The anti-tipping mechanism is used to increase the lateral force of the hydraulic support, so that when the hydraulic support moves forward at an inclined working face, it has sufficient and uniform lateral force to suppress the tendency of the hydraulic support to slide downward; the anti-tipping jack 4 cylinder diameter should be appropriate to ensure sufficient lateral thrust while being able to be installed in the rear connecting rod sleeve 2; the anti-tipping plug 6 should be reinforced to ensure sufficient strength when used as a temporary support point; the fixing pins 8 of the anti-tipping jack 4 and the anti-tipping plug 6 should be selected with the largest possible diameter to avoid bending and deformation of the anti-tipping jack 4 during operation, which would affect the movement of the hydraulic support; the side baffle 3 should be reinforced with more stiffening ribs to reduce deformation caused by collision support during use.

[0028] This novel hydraulic support auxiliary anti-tipping mechanism effectively solves the problem of downward tilting and sliding of the hydraulic support when moving forward in inclined working faces by adding an anti-tipping mechanism at the rear connecting rod. This significantly improves the stability of the hydraulic support under extreme coal seam conditions, ensuring the advancement speed of the fully mechanized mining face. Furthermore, this device only requires an integral rear connecting rod 1 with the auxiliary anti-tipping mechanism installed on it. Its simple structure and easy disassembly and replacement solve the problem of lateral tilting and sliding of the hydraulic support during forward movement in inclined coal seam conditions at minimal cost, while also saving manpower and reducing costs.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel hydraulic support auxiliary anti-tipping mechanism, characterized in that: The device includes an integral rear connecting rod (1), on which two symmetrical sleeves (2) are welded. A side baffle (3) is fixedly installed on the left and right sides of the integral rear connecting rod (1). The ends of the two sleeves (2) that are far apart from each other are inserted into the side baffles (3) on both sides. An anti-tipping jack (4) is fixedly installed inside one of the sleeves (2), and a support rod (5) is fixedly installed inside the other sleeve (2). An anti-tipping plug (6) is fixedly installed on the outer end of the support rod (5). The support rod (5) and the anti-tipping jack (4) inside the two sleeves (2) can be interchanged.

2. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 1, characterized in that: The sleeve (2) is a cylindrical structure with open ends, and the axes of the two sleeves (2) are kept coincident; a fixed seat (7) is fixedly installed between the two sleeves (2), and the fixed seat (7) is fixedly connected to the overall rear connecting rod (1). The openings of the two sleeves (2) that are close to each other are connected to the inside of the fixed seat (7).

3. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 2, characterized in that: One end of the cylinder bottom of the anti-tipping jack (4) extends into the interior of the fixed seat (7), and one end of the piston rod of the anti-tipping jack (4) faces the sleeve (2) away from the fixed seat (7).

4. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 3, characterized in that: One end of the cylinder bottom of the anti-tipping jack (4) is connected to the fixed seat (7) via a pin (8). One end of the pin (8) extends to the outside of the fixed seat (7). A stop pin seat (9) is sleeved on the outside end of the pin (8). The stop pin seat (9) is fixedly set on the outside surface of the fixed seat (7). A U-shaped pin (10) passes through the outside end of the pin (8) and connects to the stop pin seat (9), thereby connecting one end of the cylinder bottom of the anti-tipping jack (4) to the fixed seat (7).

5. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 4, characterized in that: When the piston rod of the anti-tipping jack (4) is in the retracted state, the end of the piston rod is located inside the sleeve (2); when the piston rod of the anti-tipping jack (4) is in the extended state, the end of the piston rod extends to the outside of the side baffle (3) on the same side.

6. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 2, characterized in that: The support rod (5) is a round rod structure. A plug hole is provided at the end of the support rod (5) away from the anti-overturning blockage (6). The plug hole on the support rod (5) extends into the interior of the fixed seat (7).

7. A novel hydraulic support auxiliary anti-tipping mechanism according to claim 6, characterized in that: The insertion hole on the support rod (5) is connected to the fixed seat (7) through the pin (8). One end of the pin (8) extends to the outside of the fixed seat (7). A stop pin seat (9) is sleeved on the outside end of the pin (8). The stop pin seat (9) is fixedly set on the outside surface of the fixed seat (7). The U-shaped pin (10) passes through the outside end of the pin (8) and connects with the stop pin seat (9), thereby connecting the inner end of the support rod (5) to the fixed seat (7).

8. The novel hydraulic support auxiliary anti-tipping mechanism according to claim 7, characterized in that: A support ring (11) is fixedly installed on the outer side of the middle part of the support rod (5), and the outer side of the support ring (11) abuts against the inner side of the sleeve (2).

9. A novel hydraulic support auxiliary anti-tipping mechanism according to claim 6, characterized in that: The anti-backflow plug (6) on the support rod (5) is located at the opening of the sleeve (2) away from the fixed seat (7), and the anti-backflow plug (6) seals the opening of the outer end of the sleeve (2).

10. A novel hydraulic support auxiliary anti-tipping mechanism according to claim 1, characterized in that: The side baffle (3) is perpendicular to the axis of the sleeve (2), and multiple stiffening plates are fixedly installed on the inner side of the side baffle (3).

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