Working face support evacuation tool

Abstract

The utility model belongs to the technical field of coal face hydraulic support withdrawing devices, and particularly relates to a working face support withdrawing tool. Comprising a racking inclined plate, a fixed steel sleeper, limiting I-shaped steel, a bearing steel rail and a fixed ground anchor, the racking inclined plates are installed at the head end and the tail end of the bearing steel rail, the limiting I-shaped steel is installed on the left side and the right side of the fixed steel sleeper, and the fixed ground anchor penetrates through the limiting I-shaped steel. According to the utility model, the fixed steel sleeper, the limiting I-shaped steel and the bearing steel rail form a concave track, so that the working face hydraulic support of a soft bottom plate can be rapidly and stably evacuated in a working face assembling and disassembling channel with serious crushing, water inrush, softening, argillization and floor heaving deformation, thereby greatly improving the withdrawing efficiency of the hydraulic support of a fully mechanized coal mining working face; and the support withdrawing and reversing time is shortened, and the project investment and resource waste in the withdrawing process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal face hydraulic support withdrawal device technical field, specifically related to a working face support withdrawal frock. BACKGROUND

[0002] At present, the construction of the roadway floor in the coal mine mainly adopts the rolled concrete, and its construction process mainly includes the mixing, transportation, paving and rolling of the filling material. However, due to the following reasons: ① the distance limitation of the concrete production site, high transportation cost, strict transportation time requirement and difficult access of the working face loading and unloading channel; ② the long solidification time of the concrete, the influence of the underground production water on the normal maintenance of the concrete, the limitation of other working procedures on the working face loading and unloading channel and the serious deformation and damage of the floor caused by the heavy equipment and large load of the working face; ③ the thick concrete pouring required by the heavy equipment and large load of the working face; and ④ the typical non-reusable concrete pouring floor, the large transportation cost, long construction period, large investment and serious resource waste of the concrete pouring project. The application of the rolled concrete is also limited to the long service period of the roadway, and it is difficult to be applied to the floor hardening of the working face loading and unloading channel.

[0003] The Chinese patent with the publication number CN101929346B discloses a dismounting machine which can be conveniently moved, disassembled and carried. The adopted scheme is that a rotating plate is installed on a vehicle body, the outer end of the rotating plate is hingedly connected with a lifting plate, the cylinder body of an angle adjusting oil cylinder is installed at the lower part of the outer end of the rotating plate, the piston rod end is connected with the lower part of the lifting plate, the cylinder body of a rotating oil cylinder is installed at the lower part of the vehicle body, the piston rod end of the rotating oil cylinder is movably connected with one end of a crank, the other end of the crank is fixed at the middle position of the bottom of the rotating plate, two supporting columns are vertically installed on one side of the vehicle body, one hydraulic oil cylinder is installed at each end of the two supporting columns, and a pulley is installed on the vehicle body between the two supporting columns. The application is applied to the technical field of mine vehicles. The above device cannot limit the position of the hydraulic support on both sides, and when the hydraulic support is removed, the hydraulic support may deviate, which leads to unstable removal. Moreover, the above device is not suitable for removing the hydraulic support on the soft floor. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve above -mentioned device cannot limit the position of the hydraulic support on both sides, when the hydraulic support is removed, the hydraulic support may deviate, which leads to unstable removal, and above -mentioned device is not suitable for removing the hydraulic support on the soft floor.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme of:

[0006] The working face support evacuation tool is used for recycling the hydraulic support of the coal mining face located on the soft floor, comprising a mounting inclined plate, a fixed steel sleeper, a limiting I-beam, a bearing rail and a fixed ground anchor; the mounting inclined plate is installed at the head end and tail end of the bearing rail, the limiting I-beam is installed at the left side and right side of the fixed steel sleeper, and the fixed ground anchor penetrates the limiting I-beam.

[0007] By adopting the above technical scheme, the combination design of the mounting inclined plate, the bearing rail and the fixed steel sleeper can realize the faster and more stable evacuation of the hydraulic support on the soft floor. This design greatly improves the evacuation efficiency and reduces the time required for support evacuation, thereby speeding up the face turning speed and improving the mine operation efficiency. The soft floor is prone to deformation or loosening, and the traditional support evacuation may cause support deviation, jamming and other problems. Through the limitation of the limiting I-beam and the fixed steel sleeper, the support is ensured not to deviate during the evacuation process, the stability of the evacuation is maintained, and the conditions of support damage and equipment jamming are avoided. On the soft floor, the use of this tool can reduce the damage to the floor. The traditional method of using concrete floor may cause serious deformation or damage to the floor due to the pressure in the support evacuation process, and the design reduces the direct load on the floor through reasonable support and guidance.

[0008] Further, the fixed steel sleeper is fixed to the floor by bolts, and the fixed steel sleepers are arranged along the length direction of the bearing rail at an interval of 100 cm.

[0009] By adopting the above technical scheme, the fixed steel sleeper is fixed to the floor by bolts: this design ensures that the connection between the fixed steel sleeper and the floor is very firm, effectively avoiding the deviation or inclination of the support caused by the softness or deformation of the floor during the support evacuation process. The bolt fixing mode can provide strong support force to ensure the stability of the whole system during the support evacuation process, and the fixed steel sleepers are arranged along the length direction: the array design of the steel sleepers ensures that each region during the support evacuation process can be uniformly supported, preventing local regions from bearing excessive pressure and reducing the risk of structural deformation or instability caused by uneven load. The reasonable interval (100 cm) between the fixed steel sleepers ensures the uniform distribution of load during the support evacuation process. Too small interval may cause too many support points, affecting the freedom of movement of the support; too large interval may cause insufficient support during the support evacuation, leading to deviation or instability. The interval of 100 cm can effectively balance the support and flexibility, providing sufficient support force while avoiding excessive restraint. On the soft floor, the reasonable distribution of fixed steel sleepers can effectively prevent local excessive stress and prevent further damage or deformation of the floor. The uniform distribution of each fixed steel sleeper avoids the floor rupture, depression or other adverse effects caused by concentrated load in the traditional method, thereby maintaining the stability of the floor and the smoothness of the evacuation channel.

[0010] Further, the fixed steel sleeper is a concave structure, trapezoidal grooves are arranged on both sides of the vertical inner wall of the fixed steel sleeper, and the limiting I-shaped steel is fixed in the trapezoidal groove of the fixed steel sleeper by bolts.

[0011] By adopting the above technical scheme, the fixed steel sleeper adopts a concave structure, which can provide stronger compressive strength and better bearing capacity compared with a flat design. The concave structure can effectively disperse the pressure generated during the support removal process, so that local deformation or damage does not occur during the entire removal process, thereby improving the overall stability of the device. The concave steel sleeper design enables the device to effectively avoid bending or irregular deformation under stress, ensuring that the steel sleeper remains in place during the removal process, providing a stable foundation for the smooth removal of the support. The trapezoidal grooves arranged on both sides of the vertical inner wall of the fixed steel sleeper provide a precise fixing position for the limiting I-shaped steel. The shape of the trapezoidal groove ensures that the limiting I-shaped steel can be firmly embedded in the groove during installation, preventing the I-shaped steel from shifting or loosening. Due to the matching design of the trapezoidal groove and the shape of the I-shaped steel, this structure provides higher seismic resistance and the ability to prevent sliding, making it difficult for the I-shaped steel to displace during the removal process. The limiting I-shaped steel is fixed in the trapezoidal groove of the fixed steel sleeper by bolts, and the bolt connection makes the I-shaped steel more firmly fixed and has adjustability. If fine adjustment is needed according to the working face conditions, it can be adjusted by adjusting the bolts. This design allows the tooling to adapt to different working environments. The limiting I-shaped steel, as a crucial component during the support removal process, can limit the horizontal position of the support to ensure that the support always maintains the correct position during the removal process. The design of the trapezoidal groove fixing the I-shaped steel ensures that the I-shaped steel remains fixed during the removal process and does not displace or deviate, thereby greatly improving the accuracy and safety of the support removal. The combination of the trapezoidal groove and the limiting I-shaped steel can effectively prevent the support from shifting or tilting during the removal process, ensuring the stability and accuracy of the support removal process, especially in soft floor working environments. This design is very important.

[0012] Further, the bearing steel rails are fixed at the bottom of the grooves of the fixed steel sleeper, and at least four bearing steel rails are provided, and the distance between adjacent bearing steel rails is 50 cm.

[0013] By adopting the above technical scheme, the bearing steel rail directly bears the hydraulic support, and plays a supporting and guiding role in the support withdrawal process. Fixing the bearing steel rail at the bottom of the groove of the fixed steel sleeper can ensure that the steel rail is always in a fixed position during the entire withdrawal process and will not deviate or deform due to the heavy pressure or movement of the support. The fixing method ensures that the support has a solid and stable track foundation during withdrawal. At least four bearing steel rails are provided, which can evenly distribute the weight of the support and the pressure generated during the withdrawal process to multiple points. This design not only enhances the overall stability of the system, but also prevents excessive concentrated load from causing damage to a certain track or local deformation of the bottom plate. The design of a 50cm spacing between adjacent steel rails reasonably distributes the load and avoids excessive burden on any one steel rail. The spacing between adjacent bearing steel rails is 50cm, which allows each steel rail to effectively share the pressure generated during the withdrawal process. Smaller spacing reduces the load on the local area and avoids deformation, rupture or uneven settlement of the bottom plate due to excessive pressure. Through reasonable spacing, the stability of the support during withdrawal is ensured, and the bottom plate structure is protected to the greatest extent. Fixing the bearing steel rail at the bottom of the groove of the fixed steel sleeper ensures that the steel rail is not easily moved or loosened by external forces. The groove design enhances the contact area between the steel rail and the bottom, improves the compression resistance, and thus improves the bearing capacity. The fixing method at the bottom of the groove can effectively withstand the gravity and impact force of the hydraulic support during withdrawal, maintaining the stability of the entire withdrawal system.

[0014] Further, the fixed anchors are installed on the limiting I-beams, and the fixed anchors are arranged along the length direction of the limiting I-beams, and the spacing between adjacent fixed anchors is 500cm.

[0015] By adopting the above technical scheme, the fixed ground anchor is connected with the limiting I-shaped steel to form a firm and stable fixing system. This design simplifies the installation process, and the construction personnel can quickly fix the ground anchor on the I-shaped steel, saving installation time. Moreover, the spacing of 500 cm is reasonable, avoiding too cumbersome adjustment during installation and reducing the complexity of manual operation. The fixed ground anchor is arranged at a spacing of 500 cm, which is not only suitable for conventional working faces, but also can be adjusted according to the actual geological conditions. If it is necessary to withdraw the support in different environments, it is only necessary to adjust the number or position of the ground anchor. The arrangement design of the fixed ground anchor makes the maintenance and inspection of the entire withdrawal device more convenient. If a ground anchor or its connecting part has a problem, it only needs to be checked and repaired individually, without the need to disassemble the entire system. In addition, the design of the fixed ground anchor ensures the stability of the equipment during long-term use, reduces the maintenance frequency and cost, and effectively reduces the risk of equipment failure through evenly distributed fixed ground anchors. In the case of a weak floor, the instability of the withdrawal device may cause safety hazards, and the fixed ground anchor can firmly fix the equipment to avoid accidents caused by sliding or instability of the equipment, thereby improving the safety of the operation.

[0016] Further, the fixed ground anchor is inserted into the floor, and the hydraulic support is moved to the bearing rail through the rack inclined plate under the driving of the external traction device.

[0017] By adopting the technical scheme, the ground anchor is directly inserted into the floor, which can effectively enhance the stability of the whole tooling system. The weakness or unevenness of the floor often leads to displacement or tilting of the equipment, and the fixed ground anchor can penetrate into the floor to provide a firm fixation for the tooling, preventing the equipment from loosening, slipping or tilting during the withdrawal process. Especially on a weak floor, the fixed ground anchor can effectively prevent the floor from deforming or the equipment from shifting, enhancing the safety of the whole support withdrawal process. The design of the ground anchor inserted into the floor ensures that the whole system is always in a fixed position during the support withdrawal process, avoiding the tilting or deviation of the equipment caused by external forces or unstable floor, thereby improving the stability and safety of the operation. The mounting inclined plate plays a guiding role, enabling the hydraulic support to smoothly move from the original position to the bearing rail. This design ensures that the support always moves smoothly along the predetermined path during the withdrawal process, avoiding deviation or jamming of the support during the handling process. The precise design of the mounting inclined plate and the bearing rail improves the accuracy of the support movement, thereby reducing the instability during the withdrawal process. The external traction device provides sufficient pulling force to push the hydraulic support through the mounting inclined plate to the bearing rail. Through the control of the external traction device, the movement speed of the support can be controlled smoothly and accurately, preventing the equipment from jamming or damage caused by too fast or too slow traction speed. The fixed ground anchor inserted into the floor reduces further pressure on the floor: the fixed ground anchor penetrates into the floor, effectively dispersing the pressure over a larger floor area, avoiding deformation or rupture of the floor caused by concentrated pressure. Compared with traditional suspension fixation or surface fixation, the inserted ground anchor design can provide more solid support on a weak or soft floor, thereby reducing damage to the floor.

[0018] The utility model has the advantages of:

[0019] 1. The utility model discloses a fixed ground anchor, spacing I -beam, bearing rail and other components are reasonably designed, ensure that the hydraulic support is stably and rapidly withdrawn on the weak floor, the fixed ground anchor penetrates into the floor and provides a firm fixation, prevents the equipment from tilting or displacement, and the cooperation of the mounting inclined plate and the external traction device enables the support to be accurately and smoothly moved to the bearing rail, greatly improving the withdrawal efficiency and shortening the support withdrawal time.

[0020] 2. The utility model discloses the setting and trapezoidal groove design of spacing I -beam, ensure that the support does not deviate or tilt during the withdrawal process, avoid the risk of unstable operation of the equipment on the weak floor, the reasonable arrangement of the fixed ground anchor and the accurate fixation of the bearing rail make the whole support withdrawal process more accurate and safe, effectively prevent the equipment damage or accident caused by displacement or asymmetric force.

[0021] 3. The utility model discloses reduce the dependence of complex bottom plate hardening and high -cost concrete bottom plate, through the reasonable arrangement fixed ground anchor and load bearing rail, can adapt to different working face condition, has simplified the construction process, reduced resource waste and engineering investment, bolt fixed mode and modular design make the equipment easy to install, adjust and maintain, reduce the maintenance cost and downtime in long -term use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model;

[0023] Figure 2 It is the structure schematic diagram of the fixed steel sleeper of the utility model;

[0024] Figure 3 It is the hydraulic support evacuation effect schematic diagram of the utility model;

[0025] Figure 4 It is Figure 3 The enlarged schematic diagram of A part in middle.

[0026] Wherein: 1 - install the inclined plate of frame;2 - fixed steel sleeper;21 - trapezoidal groove;3 - spacing I -steel;4 - load bearing rail;5 - fixed ground anchor;6 - bottom plate;7 - hydraulic support. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with the drawings and specific preferable implementation.

[0028] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "left side", "right side", "upper part", "lower part" and the like is the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, so it cannot be understood as the limitation of the utility model. The specific size adopted in the embodiment is only for illustrating the technical scheme, and does not limit the protection scope of the utility model.

[0029] Referring to Figure 1 , Figure 2 , Figure 3 And Figure 4 , it can be known that the utility model discloses a working face support evacuation tool, and the working face support evacuation tool is a device specially designed for recovering the hydraulic support of the coal mining working face under the condition of the soft bottom plate 6. The device is composed of the frame installation inclined plate 1, the fixed steel sleeper 2, the spacing I -steel 3, the load bearing rail 4 and the fixed ground anchor 5 five main components, and the components work cooperatively through the scientific connection mode, and the efficient and safe evacuation of the hydraulic support 7 is ensured.

[0030] First, the rack inclined plate 1 is installed at the head and tail of the bearing rail 4, which guides the hydraulic support 7 to slide onto the bearing rail 4 by tilting design, facilitating subsequent removal operation. The fixed sleeper 2 is fixed to the bottom plate 6 by high-strength bolts as the basic support structure, which is evenly distributed along the length direction of the bearing rail 4 with a spacing of 100 cm. Its concave structure provides enough space for the bearing rail 4, and trapezoidal grooves 21 are provided on both sides for fixing the limiting I-beam 3. The limiting I-beam 3 is fixed in the trapezoidal groove 21 of the fixed sleeper 2 by bolts, located on the left and right sides of the fixed sleeper 2, which is used to limit the lateral movement of the hydraulic support 7 during sliding to prevent tilting or deviation from the track.

[0031] The bearing rail 4 is fixed at the bottom of the groove of the fixed sleeper 2, which is provided with four, and the spacing between adjacent bearing rails 4 is 50 cm, forming a stable sliding track to ensure smooth sliding of the hydraulic support 7 and not easy to damage. The fixed anchor 5 is installed on the limiting I-beam 3 along its length direction with a spacing of 500 cm, which deeply penetrates into the bottom plate 6 to provide reliable anchoring force to prevent displacement or overturning of the device during removal.

[0032] Working principle: The device includes three steps of guiding sliding, limiting and supporting, and fixing and stabilizing; first, the hydraulic support 7 slides onto the bearing rail 4 under the traction of external force through the rack inclined plate 1; second, the limiting I-beam 3 limits the lateral movement of the hydraulic support 7, and the bearing rail 4 provides a stable sliding track; finally, the fixed anchor 5 penetrates into the bottom plate 6 to ensure the stability of the entire device during removal.

[0033] In actual operation, first, installation preparation is needed, the installation position is determined and the surface obstacles of the floor 6 are cleaned, and the fixed ground anchor 5 is pre-buried to ensure that the design depth and strength are reached. Then, component installation is carried out, the fixed steel sleeper 2, the limiting I-beam 3, the bearing steel rail 4 and the mounting inclined plate 1 are installed in sequence, and the stability and appropriate spacing of each component are ensured. Finally, the removal operation is carried out, the hydraulic support 7 is guided to the mounting inclined plate 1 using an external traction device, is slid along the mounting inclined plate 1 to the bearing steel rail 4, and is stably removed to the designated position under the joint action of the limiting I-beam 3 and the bearing steel rail 4, and the working face support removal tool has the advantages of stable structure, efficient removal and modular design. Through the design of the fixed ground anchor 5 and the limiting I-beam 3, the stability of the hydraulic support 7 under the condition of the soft floor 6 is ensured; the cooperation of the mounting inclined plate 1 and the bearing steel rail 4 significantly improves the efficiency and safety of the removal of the hydraulic support 7; the independent design of each component facilitates installation, maintenance and replacement, and the working face support removal tool is particularly suitable for the working face environment with complex geological conditions and soft floor 6. The efficient removal capacity and stable structure design of the working face support removal tool can effectively reduce safety accidents and equipment damage caused by improper support removal. With the improvement of the mechanization level of coal mines, the working face support removal tool has broad application prospects, through reasonable structure design and scientific connection mode, the technical problem of the removal of the hydraulic support 7 under the condition of the soft floor 6 is solved. The working efficiency and operation safety are improved, and the working face support removal tool has important popularization value.

[0034] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the specific details in the above embodiments, and various equivalent transformations of the technical solutions of the utility model can be carried out within the technical concept range of the utility model, and these equivalent transformations all belong to the protection range of the utility model.

Claims

1. A working face support withdrawal tool for recovering a coal face hydraulic support (7) located on a weak floor (6), characterised in that: Including rack inclined plate (1), fixed steel pillow (2), limiting I-beam (3), bearing steel rail (4) and fixed ground anchor (5); The rack inclined plate (1) is installed at the first end and the tail end of the bearing steel rail (4), the limiting I-beam (3) is installed on the left side and the right side of the fixed steel pillow (2), and the fixed ground anchor (5) penetrates the limiting I-beam (3).

2. The working face support withdrawal tooling of claim 1, wherein: The fixed steel pillow (2) is fixed on the bottom plate (6) by bolts, the fixed steel pillow (2) is arranged along the length direction of the bearing steel rail (4), and the spacing between adjacent fixed steel rails is 100 cm.

3. The working face support withdrawal tooling of claim 2, wherein: The fixed steel pillow (2) is concave in whole, the fixed steel pillow (2) is provided with trapezoidal grooves (21) on both sides of the vertical inner wall, and the limiting I-beam (3) is fixed in the trapezoidal groove (21) of the fixed steel pillow (2) by bolts.

4. The working face support withdrawal tooling of claim 2, wherein: The bearing steel rail (4) is fixed at the groove bottom of the fixed steel pillow (2), the bearing steel rail (4) is provided with at least four, and the spacing between adjacent bearing steel rails (4) is 50 cm.

5. The working face support withdrawal tooling of claim 4, wherein: The fixed ground anchor (5) is installed on the limiting I-beam (3), and the fixed ground anchor (5) is arranged along the length direction of the limiting I-beam (3), and the spacing between adjacent fixed ground anchors (5) is 500 cm.

6. The working face support withdrawal tooling of claim 1, wherein: The fixed ground anchor (5) is inserted into the bottom plate (6), and the hydraulic support (7) is moved to the bearing steel rail (4) through the rack inclined plate (1) under the driving of the external traction device.

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