Flexible film bag folding and unfolding device and plugging equipment

Abstract

The utility model relates to a flexible film bag folding and unfolding device and plugging equipment, a flexible film bag is folded and unfolded in the vertical direction and is provided with a first end and a second end which are oppositely arranged in the vertical direction, the first end is arranged at the top of a coal wall, and the folding and unfolding device comprises an elastic piece which is elastically compressed between the first end and the second end to enable the second end to be located at a first position so as to roll the flexible film bag; the driving piece is used for outputting driving force capable of overcoming the elastic force of the elastic piece; the traction piece is connected between the driving piece and the second end and used for pulling the second end to move to a second position in the direction away from the first end so as to unfold the flexible film bag; wherein the elastic piece is configured to generate elastic force for driving the second end from the second position to the first position when the driving piece revokes the driving force. And the whole folding and unfolding process of the flexible film bag does not need to be directly adjusted by a worker in a short distance, so that the safety of the worker is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of goaf filling, and in particular to a flexible film bag retracting and unfolding device and a plugging device. Background Art

[0002] In the field of coal mining, goafs will be formed under the surface after coal mining, and there will be air leakage problems at the inlet and return air corners of the working face in the goaf. The traditional blocking method is to use wind curtains or piled up loess bags to block the inlet and return air corners, but the blocking effect of the wind curtain method is not obvious, and it is difficult to meet the blocking needs, and the piled up loess bags are inefficient and crushed. In the related technology, by using soft film bags to replace the above two blocking methods, although the inlet and return air corners can be blocked efficiently and strongly, and have obvious air leakage blocking effects, the blocking position of the soft film bags is in the prone to collapse area of ​​the goaf, and the workers are at high risk during the construction process. Utility Model Content

[0003] The purpose of the present disclosure is to provide a flexible film bag stowage and expansion device and a sealing device to at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned object, the present disclosure provides a flexible film bag folding and unfolding device, the flexible film bag folds and unfolds in a vertical direction, and has a first end and a second end arranged opposite to each other in the vertical direction, the first end is arranged on the top of the coal wall, and the folding and unfolding device comprises:

[0005] an elastic member elastically compressed between the first end and the second end so that the second end is located at a first position to roll up the flexible film bag;

[0006] A driving member, configured to output a driving force capable of overcoming the elastic force of the elastic member; and

[0007] a traction member connected between the driving member and the second end, and used for traction of the second end to move to a second position in a direction away from the first end, so as to unfold the flexible film bag;

[0008] Wherein, the elastic member is configured to generate an elastic force to drive the second end from the second position to the first position when the driving member cancels the driving force.

[0009] Optionally, it includes a slide rail extending in the vertical direction and arranged on the side of the coal wall, and the flexible film bag is slidably connected to the slide rail to be retracted and expanded along the slide rail.

[0010] Optionally, there are two slide rails, and the two slide rails are arranged on both sides of the flexible film bag along a horizontal direction.

[0011] Optionally, it further includes a fixed pulley arranged at the coal wall side near the slide rail, and the traction member is a pull rope, one end of the pull rope is connected to the second end, and the other end passes around the fixed pulley and is connected to the driving member.

[0012] Optionally, it also includes a support rod, one end of which is vertically inserted into the coal wall side, and the other end is used for mounting the fixed pulley.

[0013] Optionally, the support rod is detachably connected to the side of the coal wall.

[0014] Optionally, the elastic member is a compression spring whose elastic expansion and contraction direction extends in the vertical direction.

[0015] Optionally, it also includes:

[0016] A guide rod extending in a vertical direction and for the compression spring to be sleeved thereon; and

[0017] A slide bar, one end of which is slidably connected to the guide rod along a vertical direction, and the other end of which is fixedly connected to the second end;

[0018] Wherein, the top end of the compression spring is fixedly connected to the top of the guide rod, and the bottom end of the compression spring is fixedly connected between the slide bars.

[0019] According to a second aspect of the present disclosure, there is also provided a plugging device, comprising a flexible film bag, a hydraulic support, the retracting and expanding device described above, and a grouting device.

[0020] Optionally, a grouting device is further included, wherein the grouting device includes a slurry supply component, a slurry delivery pipeline connected between the slurry supply component and the flexible film bag, and a grouting pump for pumping slurry.

[0021] Through the above technical solution, the driving member outputs a driving force that can overcome the elastic force of the elastic member, ensuring that the flexible film bag can be effectively unfolded, and the elastic member can automatically switch from a stretched state to a contracted state, thereby providing a reset force for the second end to move to the first position, so as to automatically control the winding process of the flexible film bag. The entire winding and unfolding process of the flexible film bag does not require direct adjustment by the staff at close range, which ensures the winding and unfolding stability and efficiency of the flexible film bag while improving the safety of the staff.

[0022] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0024] Figure 1 is a schematic diagram of a use state of a retracting and unfolding device when the flexible film bag provided by an exemplary embodiment of the present disclosure is in a rolled-up state;

[0025] Figure 2 It is a schematic diagram of the use state of the stowage and unfolding device when the flexible film bag provided by the exemplary embodiment of the present disclosure is in the unfolded state.

[0026] Description of Reference Numerals

[0027] 1-flexible film bag; 11-first end; 12-second end; 2-elastic member; 3-driving member; 4-traction member; 5-slide rail; 61-guide rod; 62-slide bar; 71-fixed pulley; 72-support rod; 81-coal wall top; 82-coal wall side; 91-hydraulic support; 92-slurry delivery pipeline. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the outline of the corresponding parts themselves; the directional words used, such as "top", "bottom", "horizontal" and "vertical", are defined based on the usage habits of the stowage and expansion device provided by the present disclosure. Specifically, refer to Figure 1 and Figure 2 The direction of the drawing shown, Figure 1 The side indicated by the Z arrow is the top, and the opposite side is the bottom. The side indicated by the X arrow is the left, and the opposite side is the right. In addition, the X direction refers to the width direction of the flexible film bag, and the Z direction refers to the length direction of the flexible film bag. The terms used in this disclosure, such as "first" and "second", are used to distinguish one element from another element, and do not have order and importance. In addition, when the following description refers to the drawings, the same reference numerals in different drawings represent the same or similar elements.

[0030] Reference Figure 1 and Figure 2 The present disclosure provides a flexible film bag retracting and unfolding device. The flexible film bag 1 can be retracted and unfolded in the vertical direction, and the flexible film bag 1 has a first end 11 and a second end 12 arranged opposite to each other in the vertical direction. The first end 11 can be arranged at the top 81 of the coal wall, and the second end 12 can reciprocate relative to the first end 11 in the vertical direction to change the length of the flexible film bag 1, thereby realizing the unfolding or rewinding of the flexible film bag 1. In the present disclosure, the retracting and unfolding device may include an elastic member 2, a driving member 3 and a traction member 4. Among them, the elastic member 2 can be elastically compressed between the first end 11 and the second end 12, that is, the elastic member 2 is in a contracted state in a normal state, so that the second end 12 is located in the first position, that is, as Figure 1 The driving member 3 can be used to output a driving force that can overcome the elastic force of the elastic member 2, so that the elastic member 2 can be stretched and elongated under the action of the driving member 3. The traction member 4 can be connected between the driving member 3 and the second end 12, so as to transmit the driving force of the driving member 3 to the second end 12, so as to traction the second end 12 to move in a direction away from the first end 11 to the second position, that is, Figure 2 The flexible film bag 1 is unfolded to the position shown in the figure. After the flexible film bag 1 is unfolded, the slurry mentioned below can be filled in the flexible film bag 1 to achieve blocking through the flexible film bag 1. In the embodiment provided by the present disclosure, the elastic member 2 can be configured to generate an elastic force to drive the second end 12 from the second position to the first position when the driving member 3 cancels the driving force, that is, the elastic member 2 is in a state as shown in the figure when the driving member 3 cancels the driving force. Figure 1 The contracted state shown is to keep the second end 12 in the first position, so that the flexible film bag 1 is always in a rolled-up state. When the driving member 3 applies a driving force to the elastic member 2, the end of the elastic member 2 connected to the second end 12 is stretched in a direction away from the first end 11 until the second end 12 is in the second position, so that the flexible film bag 1 is rolled up. When the driving member 3 withdraws the driving force, the elastic member 2 automatically contracts under the action of its own elastic contraction force, thereby driving the second end 12 to move in a direction close to the first end 11 to realize the rolling of the flexible film bag 1, so that the flexible film bag 1 in the rolling device has an automatic resetting function, thereby improving the convenience and efficiency of operation.

[0031] Through the above technical solution, the driving member 3 outputs a driving force that can overcome the elastic force of the elastic member 2, ensuring that the flexible film bag 1 can be effectively unfolded, and the elastic member 2 can automatically switch from a stretched state to a contracted state, thereby providing a reset force for the second end 12 to move to the first position, so as to automatically control the winding process of the flexible film bag 1. The entire winding and unfolding process of the flexible film bag 1 does not require direct adjustment by the staff at close range, which ensures the winding and unfolding stability and efficiency of the flexible film bag 1 while improving the safety of the staff.

[0032] Reference Figure 1 and Figure 2 The retracting and unfolding device may include a slide rail 5 extending in the vertical direction and arranged on the coal wall side 82, and the flexible film bag 1 may be slidably connected to the slide rail 5 to be retracted and unfolded along the slide rail 5. The slide rail 5 may provide support and guidance for the flexible film bag 1, so that the flexible film bag 1 can slide and retract smoothly in the vertical direction. The friction of the flexible film bag 1 during the retracting and unfolding process is effectively reduced, and at the same time, the slide rail 5 may also ensure that the movement trajectory of the flexible film bag 1 meets the design requirements, that is, it always extends in the vertical direction. In the embodiment provided in the present disclosure, a groove may be formed on the slide rail 5, and a protrusion that can slidably cooperate with the groove may be provided on the side edge in the width direction of the flexible film bag 1, thereby realizing the slidable cooperation between the slide rail 5 and the flexible film bag 1.

[0033] Reference Figure 1 and Figure 2 The number of the slide rails 5 can be two, and the two slide rails 5 can be symmetrically arranged on both sides of the flexible film bag 1 along the horizontal direction, so as to effectively reduce the burden of a single slide rail 5 and further improve the stability of the flexible film bag 1 during the folding and unfolding process.

[0034] Reference Figure 1 and Figure 2 , the stowage and unfolding device may further include a fixed pulley 71 disposed near the slide rail 5 at the coal wall 82. In the embodiment provided by the present disclosure, the traction member 4 may be a pull rope, one end of which may be connected to the second end 12, and the other end of which may bypass the fixed pulley 71 and be connected to the driving member 3. The fixed pulley 71 may be used to adjust and maintain the direction of the pull rope, so that the sliding of the pull rope is more stable and smooth. At the same time, the fixed pulley 71 can effectively reduce the friction of the pull rope, ensuring that the unfolding process of the flexible film bag 1 proceeds smoothly. In the embodiment provided by the present disclosure, a plurality of fixed pulleys 71 may be provided according to the pulling direction and arrangement position of the pull rope, so as to ensure that the flexible film bag 1 can be unfolded smoothly. In the embodiment provided by the present disclosure, the driving member 3 may be a power device such as a hand chain hoist or an electric motor that can provide a driving force. The present disclosure does not limit this, as long as it can ensure that sufficient driving force is output and the stability and reliability of the driving force output process are ensured. At the same time, by setting the pull rope, the staff can be kept away from the working range of the stowage and unfolding device, further ensuring the safety of the staff.

[0035] Reference Figure 1 and Figure 2 The retracting and unfolding device may further include a support rod 72, one end of which is vertically inserted into the coal wall side 82, and the other end is for installing the fixed pulley 71, so that when the fixed pulley 71 is installed on the coal wall side 82, it does not directly contact the coal wall side 82, thereby avoiding the coal wall side 82 from generating rotational resistance to the fixed pulley 71 during use of the fixed pulley 71, effectively improving the stability and reliability of the installation position and use process of the fixed pulley 71.

[0036] According to the embodiment provided by the present disclosure, the support rod 72 can be detachably connected to the coal wall side 82. The support rod 72 can be conveniently installed or separated from the coal wall side 82, and necessary inspection and maintenance work can be performed as needed, reducing maintenance costs and time. Alternatively, during the process of the flexible film bag 1 being unfolded, when the fixed pulley 71 and the support rod 72 interfere with other components, the fixed pulley 71 and the support rod 72 can be adjusted and modified so that the fixed pulley 71 can be flexibly adjusted and modified according to actual needs, thereby improving the applicability and operability of the winding device, and effectively ensuring the stability of the flexible film bag 1 unfolding process.

[0037] According to the embodiment provided by the present disclosure, the elastic member 2 is a compression spring whose elastic expansion direction extends in the vertical direction. By using a compression spring as the elastic member 2, the manufacturing cost of the elastic member 2 is not too high, and the structure is simple and easy to arrange.

[0038] Reference Figure 1 and Figure 2 , the retracting and expanding device provided by the present disclosure may also include a guide rod 61 and a slide bar 62. Among them, the guide rod 61 can extend in the vertical direction for the compression spring to be sleeved thereon, so that the compression spring can always be retracted and expanded in the vertical direction, effectively avoiding the risk of the compression spring being offset during compression or extension. One end of the slide bar 62 can be slidably connected to the guide rod 61 in the vertical direction, and the other end can be fixedly connected to the second end 12, so that the second end 12 of the flexible film bag 1 can move with the movement of the slide bar 62. The top end of the compression spring can be fixedly connected to the top of the guide rod 61, and the bottom end of the compression spring can be fixedly connected between the slide bars 62, so that the compression spring is elastically compressed between the top of the guide rod 61 and the slide bar 62. In this way, when the second end 12 is stretched to the bottom to unfold the flexible film bag 1, the compression spring always has a tendency to elastically contract. When the driving member 3 withdraws the driving force, the compression spring contracts under the action of the elastic force of the compression spring to drive the second end 12 to move toward the top of the guide rod 61, thereby contracting the flexible film bag 1 and effectively improving the winding efficiency of the flexible film bag 1.

[0039] According to the second aspect provided by the present disclosure, a plugging device is also provided, which may include a flexible film bag 1, a hydraulic support 91, a retracting and extending device according to the first aspect of the present disclosure, and a grouting device. The plugging device has all the beneficial effects of the retracting and extending device provided by the present disclosure, which will not be repeated here. Figure 1 and Figure 2 The hydraulic support 91 can be used to support between the top 81 of the coal wall and the bottom of the coal wall to prevent the tunnel from collapsing. As the mining work progresses, the hydraulic support 91 moves from the right side of the retracting and unfolding device to the left side of the retracting and unfolding device (i.e., the location of the goaf behind the hydraulic support that has not collapsed). At this time, the retracting and unfolding device can unfold the soft film bag 1 to fill the soft film bag 1 with the slurry mentioned below, thereby achieving plugging. This effectively reduces the safety risks of workers in the safe production process of coal mines, eliminates the high-risk way of workers working behind the hydraulic support, and ensures the work efficiency and safety of employees.

[0040] Reference Figure 1 and Figure 2, the plugging equipment provided by the present disclosure may also include a grouting device, wherein the grouting device may include a slurry supply part, a slurry delivery pipeline 92 and a grouting pump. The slurry delivery pipeline 92 may be connected and arranged between the slurry supply part and the flexible film bag 1 for use as a conveying pipeline, and the grouting pump may be used to provide power for slurry delivery. In the present disclosure, when there is a need for plugging and the flexible film bag 1 needs to be switched to the unfolded state, the slurry in the slurry supply part may be delivered to the flexible film bag 1 through the delivery pipeline by the grouting pump to fill the flexible film bag 1, thereby achieving plugging. After the plugging is completed, the slurry in the flexible film bag 1 may be delivered to the slurry supply part through the delivery pipeline by the grouting pump, and then the flexible film bag 1 may be rolled up to prepare for the next plugging.

[0041] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0043] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A flexible film bag folding and unfolding device, wherein the flexible film bag folds and unfolds in a vertical direction and has a first end and a second end arranged opposite to each other in the vertical direction, wherein the first end is arranged on the top of the coal wall, characterized in that: The stowage and expansion device comprises: an elastic member elastically compressed between the first end and the second end so that the second end is located at a first position to roll up the flexible film bag; A driving member, configured to output a driving force capable of overcoming the elastic force of the elastic member; and a traction member connected between the driving member and the second end, and used for traction of the second end to move to a second position in a direction away from the first end, so as to unfold the flexible film bag; Wherein, the elastic member is configured to generate an elastic force to drive the second end from the second position to the first position when the driving member cancels the driving force.

2. The stowage and expansion device according to claim 1, characterized in that: It comprises a slide rail extending in the vertical direction and arranged on the side of the coal wall, and the soft film bag is slidably connected with the slide rail to be retracted and expanded along the slide rail.

3. The stowage and expansion device according to claim 2, characterized in that: The number of the slide rails is two, and the two slide rails are arranged on both sides of the flexible film bag along the horizontal direction.

4. The stowage and expansion device according to claim 2, characterized in that: It also includes a fixed pulley arranged on the coal wall side near the slide rail, and the traction member is a pull rope, one end of the pull rope is connected to the second end, and the other end bypasses the fixed pulley and is connected to the driving member.

5. The stowage and expansion device according to claim 4, characterized in that: It also includes a support rod, one end of which is vertically inserted into the coal wall side, and the other end is used for mounting the fixed pulley.

6. The stowage and expansion device according to claim 5, characterized in that: The support rod is detachably connected to the coal wall side portion.

7. The stowage and expansion device according to claim 1, characterized in that: The elastic member is a compression spring whose elastic expansion and contraction direction extends in the vertical direction.

8. The stowage and expansion device according to claim 7, characterized in that: Also includes: A guide rod extending in a vertical direction and for the compression spring to be sleeved thereon; and A slide bar, one end of which is slidably connected to the guide rod along a vertical direction, and the other end of which is fixedly connected to the second end; Wherein, the top end of the compression spring is fixedly connected to the top of the guide rod, and the bottom end of the compression spring is fixedly connected between the slide bars.

9. A blocking device, characterized in that: It comprises a flexible film bag, a hydraulic support, a retracting and unfolding device according to any one of claims 1 to 8, and a grouting device.

10. The blocking device according to claim 9, characterized in that: It also includes a grouting device, which includes a slurry supply component, a slurry delivery pipeline connected between the slurry supply component and the flexible film bag, and a grouting pump for pumping slurry.

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