Retractable gangue blocking plate wall on gob side in gobs along empty roadway

Abstract

The application discloses a telescopic gangue blocking plate wall for gob-side entry retaining in a goaf area, which is used for supporting the goaf area of a roadway and comprises a gangue blocking unit and an adjusting unit. The gangue blocking unit comprises a plurality of top pressing assemblies which can be relatively moved to be tightly pressed against the inner wall of the goaf area. The adjusting unit is connected to the gangue blocking unit and is used for driving the top pressing assemblies to synchronously expand or contract. The adjusting unit drives the top pressing assemblies in the gangue blocking unit to synchronously act, so that the first top rod and the second top rod can be tightly pressed against the inner wall of the goaf area quickly and accurately, the fast installation and support are realized, the demand for manpower and the operation time are greatly reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of coal mining or other mining technology, specifically to a retractable retaining wall for the goaf side of a goaf-retaining roadway. Background Technology

[0002] In the process of mining along the goaf, a retaining wall needs to be constructed between the goaf and the retained roadway to prevent the collapse of the gangue on the side wall of the goaf and the blockage of the goaf. Currently, the commonly used methods are to manually build brick walls, stack sandbags, or install fixed metal / wooden walls. These methods have low construction efficiency, bricklaying and sandbag stacking rely entirely on manual labor, and working in narrow tunnel spaces is time-consuming and labor-intensive, affecting the connection between mining and excavation. In addition, because the width of the goaf will undergo significant convergence deformation, the fixed wall cannot deform accordingly. Under large deformation stress, it will be squeezed, cracked, or even collapsed, requiring frequent repairs or reconstruction. Therefore, there is an urgent need for a retaining wall that can be quickly installed and can adapt to the deformation of the goaf in the roadway while maintaining its supporting function.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a retractable retaining wall on the goaf side of the goaf-retaining roadway, so as to solve the problems of low construction efficiency, inability to adapt to goaf deformation, easy damage and frequent maintenance of existing retaining structures mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A retractable retaining wall for the goaf area of ​​a roadway, used to support the goaf area of ​​the roadway, comprising: The rock-blocking unit includes multiple mating components that can move relative to each other to abut against the sidewall within the goaf area; An adjustment unit, connected to the baffle unit, is used to drive the tightening assembly to expand or contract synchronously.

[0006] Furthermore, the clamping assembly includes: Top block; A connecting rod, one end of which is hinged to the top block, and a second hinge rod is fixedly connected to one end of the connecting rod; The first push rod is hinged to the other end of the connecting rod and is used to press against the side wall of the goaf area.

[0007] Furthermore, the adjustment unit includes: Telescopic support, including sleeves and telescopic rods that are nested together and can slide relative to each other; A clamping mechanism is located at the end of the telescopic bracket, and its driving end is connected to the telescopic bracket.

[0008] Furthermore, the clamping mechanism includes a hydraulic cylinder, the cylinder body of which is fixedly connected to one end of the telescopic bracket; The piston rod end of the hydraulic cylinder is fixedly connected to a second push rod for pressing against the side wall of the goaf area.

[0009] Furthermore, a first limiting ring and a second limiting ring are respectively fixedly sleeved on the outer side wall of the sleeve and the telescopic rod; The top block is fitted onto the telescopic bracket and located between the first limiting ring and the second limiting ring. The top block has an insertion hole inside for accommodating the telescopic bracket.

[0010] Furthermore, the top block is provided with a first hinge rod, and the first hinge rod has a hinge hole; One end of the top block is fixedly connected to a first hinge rod, and the two are hinged by passing a first hinge shaft through the second hinge rod and the hinge hole. One end of the connecting rod is provided with a first slot for receiving the first hinge rod.

[0011] Furthermore, the end of the first top rod is provided with a second slot, and the two are hinged together by a second hinge shaft passing through the second slot and the second hinge rod.

[0012] Furthermore, a limit block is fixedly connected to one end of the telescopic rod that extends into the sleeve; The inner wall of the sleeve is provided with a recess groove extending along its axial direction; The limiting block is slidably disposed within the retraction groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention drives the tightening components in the rock-blocking unit to move synchronously by adjusting the unit, which can quickly and accurately tighten the first and second jacking rods against the inner wall of the goaf area, achieving rapid installation and support, greatly reducing manpower requirements and working time, and improving construction efficiency.

[0014] 2. This invention provides driving force through a hydraulic cylinder and utilizes a linkage-driven transmission method, enabling the retaining wall to have active telescopic adjustment capabilities. It can adapt to the convergence deformation of the goaf during service, always maintaining effective support force, avoiding wall cracking or collapse caused by deformation stress, and reducing maintenance requirements.

[0015] 3. By setting up a symmetrical tightening mechanism and telescopic support structure, this invention ensures that the supporting force is evenly distributed around the goaf area, preventing local damage caused by uneven force, and improving the reliability and safety of the support. At the same time, the cooperation between the telescopic rod and the sleeve, as well as the design of the limiting block and the retraction groove, ensures the smoothness and synchronization of the telescopic process, further improving the stability and applicability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal support of the retaining wall for the goaf area according to the present invention; Figure 3 This is a diagram showing the cooperation relationship between the rock-blocking unit and the adjustment unit of the present invention; Figure 4 For the present invention in Figure 3 Enlarged view of point A in the middle; Figure 5 This is a diagram showing the connection relationship between the top block, connecting rod, and first top rod of the present invention.

[0017] Reference numerals: 100, roadway; 101, goaf area; 1, rock retaining unit; 11, roof block; 111, insertion hole; 112, first hinge rod; 1121, hinge hole; 12, connecting rod; 121, second hinge rod; 122, first hinge shaft; 123, first slot; 13, first top rod; 131, second hinge shaft; 132, second slot; 2, adjusting unit; 21, sleeve; 211, retraction groove; 22, telescopic rod; 221, limiting block; 221, limiting block; 23, tightening mechanism; 231, hydraulic cylinder; 232, second top rod; 233, first limiting ring; 234, second limiting ring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-5 The present invention provides a technical solution: A retractable retaining wall for the goaf area of ​​a roadway 100, used to support the goaf area 101 of the roadway 100, comprising: The rock-blocking unit 1 includes multiple mating components that can move relative to each other to abut against the inner wall of the goaf area 101; Adjustment unit 2, connected to the baffle unit 1, is used to drive the tightening assembly to expand or contract synchronously.

[0020] As an improvement, such as Figure 2-3 , Figure 5 As shown, the clamping assembly includes: Top block 11; The connecting rod 12 has one end hinged to the top block 11, and one end of the connecting rod 12 is fixedly connected to a second hinge rod 121; The first top rod 13 is hinged to the other end of the connecting rod 12 and is used to press against the inner wall of the goaf area 101.

[0021] Furthermore, the adjustment unit 2 includes: The telescopic support includes a sleeve 21 that is nested together and can slide relative to each other and a telescopic rod 22; The clamping mechanism 23 is located at the end of the telescopic bracket, and its driving end is connected to the telescopic bracket.

[0022] Furthermore, such as Figure 2-3 As shown, the clamping mechanism 23 includes a hydraulic cylinder 231, the cylinder body of which is fixedly connected to one end of the telescopic bracket; The piston rod end of the hydraulic cylinder 231 is fixedly connected to a second push rod 232 for pressing against the inner wall of the goaf area 101.

[0023] The sleeve 21 and the telescopic rod 22 are respectively fixedly sleeved with a first limiting ring 233 and a second limiting ring 234 on their outer side walls; The top block 11 is sleeved on the telescopic bracket and located between the first limiting ring 233 and the second limiting ring 234. The top block 11 has an insertion hole 111 for accommodating the telescopic bracket.

[0024] As an improvement, such as Figure 5 As shown, the top block 11 is provided with a first hinge rod 112, and the first hinge rod 112 is provided with a hinge hole 1121; One end of the top block 11 is fixedly connected to a first hinge rod 112, and the two are hinged by a first hinge shaft 122 passing through the second hinge rod 121 and the hinge hole 1121. One end of the connecting rod 12 is provided with a first slot 123 for accommodating the first hinge rod 112.

[0025] Furthermore, the end of the first top rod 13 is provided with a second slot 132, and the second hinge shaft 131 passes through the second slot 132 to achieve hinge connection between the two and the second hinge rod 121.

[0026] Furthermore, such as Figure 4 As shown, a limit block 221 is fixedly connected to one end of the telescopic rod 22 that extends into the sleeve 21; The inner wall of the sleeve 21 is provided with a retraction groove 211 extending along its axial direction; The limiting block 221 is slidably disposed within the retraction groove 211.

[0027] It should be noted that: in the specific implementation process of this invention, such as Figure 1-5 As shown, when it is necessary to provide internal support for the goaf area 101 within the roadway 100, the device can be placed at the location where the goaf area 101 needs support, so that the two sets of first top rods 13 and two sets of second top rods 232, which are arranged opposite to each other, face the inner wall of the goaf area 101. The hydraulic cylinder 231 is activated, and the hydraulic cylinder 231 drives the first limiting ring 233 to move through the sleeve 21 or the telescopic rod 22. The first limiting ring 233 drives the top block 11 to move, and the top block 11 drives the connecting rod 12 to move through the first hinge shaft 122. The connecting rod 12 drives the first top rod 13 to press against the two opposite sides of the inner side of the goaf area 101 through the second hinge shaft 131. At the same time, under the reverse force of the sleeve 21 or the telescopic rod 22 on the hydraulic cylinder 231, the hydraulic cylinder 231 pushes the second top rod 232 to press against the other two opposite sides of the inner side of the goaf area 101, thereby achieving rapid internal support for the inner side of the goaf area 101 without relying on a large amount of manpower. like Figure 1-3 As shown, the hydraulic cylinder 231 of the present invention is provided at both ends of the sleeve 21 and the telescopic rod 22. The two sets of hydraulic cylinders 231 are driven synchronously, so that the first limiting ring 233 and the second limiting ring 234, which are fixedly sleeved on the outside of the sleeve 21 and the telescopic rod 22 and located on both sides of the top block 11, can push and pull the top block 11 synchronously, so that the second top rod 232 and the first top rod 13 can be pressed against the inner wall of the goaf area 101 synchronously, ensuring that the internal support force is synchronous and uniform, and preventing the goaf area 101 from cracking and collapsing due to uneven force. like Figure 3 As shown, in addition, by adjusting the lifting distance of the hydraulic cylinder 231, the present invention can flexibly adjust the distance of the first jacking rod 13 and the second jacking rod 232 to push outward and expand, which is suitable for internal support of goaf areas 101 of different sizes and has a wide range of applications. like Figure 3-4As shown, the present invention fixes a limiting block 221 to one end of the telescopic rod 22 located on the sleeve 21, and provides a retraction groove 211 inside the sleeve 21 to guide and limit the movement of the limiting block 221. When the hydraulic cylinder 231 is pressing the sleeve 21 and the telescopic rod 22, the limiting block 221 will move along the inside of the retraction groove 211 to compensate for the pressing distance of the hydraulic cylinder 231. By setting the telescopic rod 22 and the sleeve 21 between two sets of opposing top blocks 11, it is ensured that the movement trajectory of the opposing top blocks 11 will not be skewed, thus improving the reliability of the entire inner support.

[0028] 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.

[0029] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable retaining wall for supporting the goaf area (101) of a roadway (100), characterized in that, include: The rock-blocking unit (1) includes a plurality of mating components that can move relative to each other to abut against the inner sidewall of the goaf area (101); The adjustment unit (2) is connected to the baffle unit (1) and is used to drive the tightening assembly to expand or contract synchronously.

2. The retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 1, characterized in that: The clamping assembly includes: Top block (11); A connecting rod (12) is hinged at one end to the top block (11), and a second hinge rod (121) is fixedly connected to one end of the connecting rod (12). The first top rod (13) is hinged to the other end of the connecting rod (12) and is used to press against the inner wall of the goaf area (101).

3. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 2, characterized in that: The adjustment unit (2) includes: The telescopic support includes a sleeve (21) that is nested together and can slide relative to each other and a telescopic rod (22). The clamping mechanism (23) is located at the end of the telescopic bracket, and its driving end is connected to the telescopic bracket.

4. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 3, characterized in that: The clamping mechanism (23) includes a hydraulic cylinder (231), the cylinder body of which is fixedly connected to one end of the telescopic bracket; The piston rod end of the hydraulic cylinder (231) is fixedly connected to a second push rod (232) for pressing against the inner wall of the goaf area (101).

5. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 3, characterized in that: The sleeve (21) and the telescopic rod (22) are respectively fixedly sleeved with a first limiting ring (233) and a second limiting ring (234). The top block (11) is sleeved on the telescopic bracket and located between the first limiting ring (233) and the second limiting ring (234). The top block (11) has an insertion hole (111) for accommodating the telescopic bracket.

6. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 2, characterized in that: The top block (11) is provided with a first hinge rod (112), and a hinge hole (1121) is provided on the first hinge rod (112). One end of the top block (11) is fixedly connected to a first hinge rod (112), and the two are hinged by a first hinge shaft (122) passing through the second hinge rod (121) and the hinge hole (1121); One end of the connecting rod (12) is provided with a first slot (123) for receiving the first hinge rod (112).

7. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 6, characterized in that: The end of the first top rod (13) is provided with a second slot (132), and the second hinge rod (121) is hinged together by the second hinge shaft (131) passing through the second slot (132).

8. A retractable retaining wall for the goaf side of a goaf-retaining roadway according to claim 3, characterized in that: One end of the telescopic rod (22) that extends into the sleeve (21) is fixedly connected to a limiting block (221); The inner wall of the sleeve (21) is provided with a retraction groove (211) extending along its axial direction. The limiting block (221) is slidably disposed in the retraction groove (211).

Images