Hydraulic support withdrawing device and hydraulic support withdrawing method

Abstract

The invention relates to the technical field of coal mining, and discloses a hydraulic support withdrawing device and a hydraulic support withdrawing method. The hydraulic support withdrawing device comprises a traction assembly, a reversing wheel assembly and a rope feeding assembly. The traction assembly comprises a traction rope and a main winch, and the traction rope is connected with the main winch and the hydraulic support to be withdrawn. The reversing wheel assembly has a first state and a second state. The rope feeding assembly comprises a hook lock, the hook lock is movably connected with the traction rope, and the hook lock can move between a first position and a second position. When the hook lock moves from the first position to the second position, the traction rope can be hung on the reversing wheel assembly in the first state; and when the reversing wheel assembly is switched from the first state to the second state, the traction rope can be separated from the reversing wheel assembly. Through cooperation of the rope feeding assembly and the reversing wheel assembly, automatic rope feeding and rope discharging operation of the pulling rope is achieved, manpower is reduced, efficiency is improved, staying of personnel on a construction site is reduced, and safety of the hydraulic support withdrawing process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, and in particular to a hydraulic support retracting device and a hydraulic support retracting method. Background Art

[0002] The hydraulic support is a type of coal mining face support equipment, which is used to support and maintain the roof of the top control area of the coal mining face and create a safe working space for coal mining. The retraction of the hydraulic support is a key link in the subsequent work of coal mining, involving the safety of a large number of equipment and personnel. During the retraction of the hydraulic support, the direction of the hydraulic support is different from the extension direction of the tunnel. The hydraulic support usually needs to be turned in the tunnel. The retraction operation is relatively troublesome and requires the cooperation of multiple equipment and personnel. In the related technology, the equipment involved in the retraction of the hydraulic support has a low degree of automation, and the operation process is mainly manual. In addition, each time a hydraulic support is retracted, the rope needs to be re-hung, and the rope operation is frequent, resulting in low work efficiency. It is often necessary for multiple operators to stay in the tunnel to perform the rope operation, and when a rope break accident occurs, it is easy to cause casualties. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in the related technology, the equipment involved in the retraction of the hydraulic support has a low degree of automation, the operation process is mainly manual, and each time a hydraulic support is retracted, the rope needs to be re-hung, the rope up and down operations are frequent, the work efficiency is low, and the safety is low.

[0004] In order to solve the above technical problems, the present invention provides a hydraulic support retraction device, comprising:

[0005] A traction assembly, the traction assembly comprising a traction rope and a main winch, one end of the traction rope being connected to the main winch, and the other end being connected to the hydraulic support to be removed;

[0006] a reversing wheel assembly, the reversing wheel assembly being spaced apart from the hydraulic support to be removed, the reversing wheel assembly having a first state and a second state, the traction rope being able to be hung on the reversing wheel assembly in the first state, thereby tensioning the traction rope, and the traction rope being detached from the reversing wheel assembly in the second state;

[0007] an upper rope assembly, the upper rope assembly including a hook lock, the hook lock being movably connected to the traction rope, the hook lock being movable between a first position and a second position relative to the main winch, wherein when the hook lock is in the first position, the hook lock is located on a side of the reversing wheel assembly away from the main winch, and when the hook lock is in the second position, the hook lock is located on a side where the main winch is located;

[0008] When the hook lock moves from the first position to the second position, the towing rope can be hung on the reversing wheel assembly in the first state; when the reversing wheel assembly switches from the first state to the second state, the towing rope can be detached from the reversing wheel assembly.

[0009] According to an embodiment of the present invention, the reversing wheel assembly includes a first pulley. When the reversing wheel assembly switches from the first state to the second state, the included angle between the rotation axis of the first pulley and the vertical direction gradually increases, so that the towing rope is detached from the first pulley.

[0010] According to an embodiment of the present invention, the reversing wheel assembly further includes a fixed seat, a rotating seat and a driving member. The first pulley is rotatably arranged at one end of the rotating seat away from the main winch, and one end of the rotating seat close to the main winch is rotatably connected to the fixed seat. The driving member connects the rotating seat and the fixed seat.

[0011] According to an embodiment of the present invention, the rope feeding assembly further includes a second pulley, a driving rope and a auxiliary winch. The second pulley is arranged on the side of the reversing wheel assembly away from the main winch. The hook lock is connected to the driving rope, and the driving rope is wound around the second pulley and the auxiliary winch.

[0012] According to an embodiment of the present invention, the hydraulic support withdrawal device further includes at least two shielding supports, which are distributed along a first direction perpendicular to the distribution direction of the hydraulic supports to be withdrawn. The shielding supports are arranged on one side of the first direction, and both the reversing wheel assembly and the rope feeding assembly are connected to the shielding supports.

[0013] According to an embodiment of the present invention, at least two connecting components are connected in series to the end of the towing rope away from the main winch, and the connecting components are detachably connected to the hydraulic supports to be withdrawn.

[0014] According to an embodiment of the present invention, a buffer rope section is provided between any two adjacent connecting components of the towing rope. The length of the buffer rope section is L, the distance between the reversing wheel assembly and the main winch is L1, the length of the section of the towing rope wound around the reversing wheel assembly is L2, and the distance between the hydraulic support to be withdrawn and the reversing wheel assembly is L3. L≥L1+L2+L3.

[0015] According to an embodiment of the present invention, the connecting component includes a hook and a buckle. The hook is connected to the hydraulic support to be withdrawn, a second connecting rope is connected to the hook, and the second connecting rope and the towing rope are detachably connected through the buckle.

[0016] The present invention also provides a method for withdrawing a hydraulic support. The method for withdrawing a hydraulic support is based on the hydraulic support withdrawing device as described above, and the method for withdrawing a hydraulic support includes the following steps:

[0017] Connect the hydraulic support to be withdrawn to the towing rope;

[0018] Drive the hook lock to move from the first position to the second position, so that the towing rope is hung on the reversing wheel assembly in the first state;

[0019] Drive the main winch to move, so that the towing rope is retracted towards the position where the main winch is located, so that the hydraulic support to be withdrawn moves towards the side where the reversing wheel assembly is located.

[0020] According to an embodiment of the present invention, the method for withdrawing a hydraulic support further includes the following steps:

[0021] When the hydraulic support to be withdrawn moves towards the side where the reversing wheel assembly is located to a preset position, stop the main winch from moving, and drive the reversing wheel assembly to switch from the first state to the second state, so that the towing rope disengages from the reversing wheel assembly;

[0022] Drive the main winch to move, so that the towing rope is retracted towards the position where the main winch is located, so that the hydraulic support to be withdrawn moves towards the side where the main winch is located. Compared with the prior art, the hydraulic support withdrawing device according to the embodiment of the present invention has the following beneficial effects:

[0023] In the hydraulic support withdrawing device according to the embodiment of the present invention, by providing an upper rope assembly, the hook lock of the upper rope assembly can move between a first position and a second position, and the reversing wheel assembly can switch between a first state and a second state. When the hook lock moves from the first position to the second position and the reversing wheel assembly is in the first state, the towing rope can be hung on the reversing wheel assembly; when the reversing wheel assembly switches from the first state to the second state, the towing rope disengages from the reversing wheel assembly. In this way, through the cooperation of the upper rope assembly and the reversing wheel assembly, the automatic rope-up and rope-down operations of the towing rope are realized, reducing manual labor, improving efficiency, and reducing the stay of personnel at the construction site, thereby improving the safety of the hydraulic support withdrawal process. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the hydraulic support withdrawing device provided by the embodiment of the present invention.

[0025] Figure 2 is one of the partial structural schematic diagrams of the hydraulic support withdrawing device provided by the embodiment of the present invention.

[0026] Figure 3 is Figure 2 the partial enlarged view at A in

[0027] Figure 4 is Figure 2 The partial enlarged view at position B in

[0028] Figure 5 is the second partial structural schematic diagram of the hydraulic support withdrawal device provided by the embodiment of the present invention.

[0029] Figure 6 is Figure 5 The partial enlarged view at position C in

[0030] Figure 7 is the schematic diagram of the connection between the reversing wheel assembly and the hydraulic support to be withdrawn provided by the embodiment of the present invention.

[0031] Figure 8 is the schematic flow chart of the hydraulic support withdrawal method provided by the embodiment of the present invention.

[0032] Reference numerals:

[0033] 110, towing rope; 111, main winch; 112, buffer rope section;

[0034] 120, reversing wheel assembly; 121, first pulley; 122, fixed seat; 123, rotating seat; 124, driving member;

[0035] 130, upper rope assembly; 131, hook lock; 132, second pulley; 133, driving rope; 134, first connecting rope; 135, buckle;

[0036] 140, shielding support; 150, connecting assembly; 151, hook; 152, lock; 153, first connecting rope;

[0037] 200, hydraulic support to be withdrawn; X, first direction; Y, second direction. Detailed implementation manners

[0038] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0039] In the description of the embodiments of the present invention, the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "coupled" shall be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] A hydraulic support withdrawal device according to an embodiment of the present invention includes a traction assembly, a reversing wheel assembly 120, and an upper rope assembly 130.

[0043] Specifically, the traction assembly includes a traction rope 110 and a main winch 111. The traction rope 110 is a steel wire rope. One end of the traction rope 110 is connected to the main winch 111, and the other end is connected to the hydraulic support 200 to be withdrawn. The main winch 111 can be arranged at the roadway entrance to drag the hydraulic support to the roadway entrance through the traction rope 110, so as to perform the next transportation of the hydraulic support. The reversing wheel assembly 120 is arranged at an interval from the hydraulic support 200 to be withdrawn, and the traction rope 110 can be wound around the reversing wheel assembly 120 to change the direction of the traction rope 110. As Figure 1 And Figure 2As shown, a plurality of hydraulic supports 200 to be withdrawn are distributed along the second direction X. The reversing wheel assembly 120 is arranged on one side of the second direction X and is spaced from the hydraulic supports 200 to be withdrawn. Thus, after the towing rope 110 is hung on the reversing wheel assembly 120, when the main winch 111 pulls the towing rope 110 for recovery, the towing rope 110 has a traction force perpendicular to the second direction X on the hydraulic supports 200 to be withdrawn, so as to pull the hydraulic supports 200 to be withdrawn out of the row. It should be noted that since the working environment of the hydraulic support withdrawal device is in a mine, the reversing wheel assembly 120 should be arranged on one side of the support area of the hydraulic supports to be withdrawn to ensure safety. For the convenience of distinction, among the hydraulic supports 200 to be withdrawn, the hydraulic supports 200 being dragged by the traction assembly are called responsive supports.

[0044] The upper rope assembly 130 can drive the towing rope 110 to move towards the reversing wheel assembly 120 to wind around the reversing wheel assembly 120. As Figure 3 shown, the upper rope assembly 130 includes a hook lock 131. The hook lock 131 is movably connected to the towing rope 110. The hook lock 131 can move along the towing rope 110 to avoid the hook lock 131 affecting the rope winding process of the towing rope 110. In some embodiments, the hook lock 131 can be in an annular structure, and the towing rope 110 passes through the through hole of the hook lock 131.

[0045] The hook lock 131 can move between a first position and a second position relative to the main winch 111. When the hook lock 131 is in the first position, the hook lock 131 is on the side of the reversing wheel assembly 120 away from the main winch 111, and the towing rope 110 crosses the reversing wheel assembly 120; when the hook lock 131 is in the second position, the hook lock 131 is on the side where the main winch 111 is located, and the towing rope 110 is disengaged from the reversing wheel assembly 120. When the hook lock 131 moves from the first position to the second position, the hook lock 131 approaches the main winch 111.

[0046] The reversing wheel assembly 120 has a first state and a second state. The towing rope 110 can be hung on the reversing wheel assembly 120 in the first state, and the towing rope 110 is tensioned, so that the direction of the towing rope 110 can be changed through the reversing wheel assembly 120, thereby changing the direction of the traction force applied by the traction assembly to the responsive support. The towing rope 110 is disengaged from the reversing wheel assembly 120 in the second state.

[0047] When the hook lock 131 moves from the first position to the second position and the reversing wheel assembly 120 is in the first state, the towing rope 110 can be hung on the reversing wheel assembly 120 in the first state. When the reversing wheel assembly 120 switches from the first state to the second state, the towing rope 110 can be disengaged from the reversing wheel assembly 120.

[0048] When moving the hydraulic support 200 to be withdrawn from its installation position, the towing rope 110 needs to be wound around the reversing wheel assembly 120 to provide a traction force with a component force perpendicular to the second direction X. During the process of winding the towing rope 110 around the reversing wheel assembly 120, the driving hook lock 131 is moved to the first position so that the towing rope 110 crosses the reversing wheel assembly 120; thereafter, the hook lock 131 moves to the second position, and the reversing wheel assembly 120 is in the first state. The reversing wheel assembly 120 is located on the moving path of the towing rope 110 towards the main winch 111, so that the towing rope 110 can contact the reversing wheel assembly 120 and be hung on the reversing wheel assembly 120. It can be understood that during the process of winding the towing rope 110 around the reversing wheel assembly 120, the main winch 111 provides a pulling force to keep the towing rope 110 in a tensioned state. When the response support is moved out of its installation position, the reversing wheel assembly 120 switches from the first state to the second state, and the towing rope 110 detaches from the reversing wheel assembly 120. The response support is pulled by the main winch 111 to move in the direction towards the main winch 111. During the process of the response support moving in the direction towards the main winch 111, the hook lock 131 can move to the main winch 111 following the towing rope 110 to avoid the hook lock 131 affecting the movement of the towing rope 110. After the response support moves to the main winch 111, the connection between the towing rope 110 and the response support is released, and then the towing rope 110 is hung on the reversing wheel assembly 120 again through the rope winding assembly 130, so as to move the next hydraulic support 200 to be withdrawn.

[0049] According to the hydraulic support withdrawal device of the embodiment of the present invention, by providing the rope winding assembly 130, the hook lock 131 of the rope winding assembly 130 can move between the first position and the second position, and the reversing wheel assembly 120 can switch between the first state and the second state. When the hook lock 131 moves from the first position to the second position, the towing rope 110 can be hung on the reversing wheel assembly 120 in the first state; when the reversing wheel assembly 120 switches from the first state to the second state, the towing rope 110 detaches from the reversing wheel assembly 120. In this way, through the cooperation of the rope winding assembly 130 and the reversing wheel assembly 120, the automatic rope winding and unwinding operations of the towing rope 110 are realized, reducing manual labor, improving efficiency, and reducing the stay of personnel at the construction site, thereby improving the safety of the hydraulic support withdrawal process.

[0050] As Figure 1 And Figure 2 As shown, according to some embodiments of the present invention, the hydraulic support withdrawal device further includes at least two shielding supports 140, which are distributed along the first direction Y, and the first direction Y is perpendicular to the distribution direction of the hydraulic support 200 to be withdrawn. As Figure 1As shown, a plurality of hydraulic supports 200 to be withdrawn are distributed along the second direction X. The shielding support 140 is provided on one side of the second direction X. Both the reversing wheel assembly 120 and the upper rope assembly 130 are connected to the shielding support 140. The shielding support 140 can provide temporary support, replace the support function of the hydraulic support, maintain the stability of the roof, and can block the impact of falling crushed stones, coal blocks, etc., isolate the dangerous area, and provide a safe space for the operators.

[0051] As Figure 5 with Figure 6 As shown, according to some embodiments of the present invention, the reversing wheel assembly 120 includes a first pulley 121. When the reversing wheel assembly 120 switches from the first state to the second state, the included angle between the rotation axis of the first pulley 121 and the vertical direction gradually increases, so that the towing rope 110 disengages from the first pulley 121, realizing the operation of lowering the rope. In some embodiments, when the reversing wheel assembly 120 is in the first state, the rotation axis of the first pulley 121 extends along the vertical direction, and the towing rope 110 can be wound around the outer periphery of the first pulley 121. When the reversing wheel assembly 120 is in the first state, the included angle between the rotation axis of the first pulley 121 and the vertical direction increases, and the top of the first pulley 121 tilts toward the side where the main winch 111 is located.

[0052] As Figure 6 As shown, according to some embodiments of the present invention, the reversing wheel assembly 120 further includes a fixed seat 122, a rotating seat 123 and a driving member 124. The first pulley 121 is rotatably arranged at one end of the rotating seat 123 away from the main winch 111. One end of the rotating seat 123 close to the main winch 111 is rotatably connected to the fixed seat 122, and the driving member 124 connects the rotating seat 123 and the fixed seat 122. By driving the rotating seat 123 to rotate relative to the fixed seat 122 by the driving member 124, the first end of the rotating seat 123 provided with the first pulley 121 is lifted or lowered, so as to drive the first pulley 121 to flip, thereby realizing the switching of the reversing wheel assembly 120 between the first state and the second state. The driving member 124 can be a telescopic cylinder.

[0053] As Figure 3 As shown, according to some embodiments of the present invention, the upper rope assembly 130 further includes a second pulley 132, a driving rope 133 and a secondary winch. The second pulley 132 is provided on the side of the reversing wheel assembly 120 away from the main winch 111. The secondary winch is located at the main winch 111. The hook lock 131 is connected to the driving rope 133. The driving rope 133 is wound around the second pulley 132 and the secondary winch. The secondary winch can drive the driving rope 133 to move relative to the second pulley 132, so that the hook lock 131 moves between the first position and the second position. In some embodiments, the upper rope assembly 130 further includes a first connecting rope 134. One end of the first connecting rope is connected to the hook lock 131, and the connecting rope 134 is fixedly connected to the driving rope 133 through a buckle.

[0054] As Figure 1 shown, in some embodiments, there are at least two shielding supports 140, which are distributed perpendicular to the first direction Y, and the first direction Y is perpendicular to the second direction X, so as to increase the support area and improve safety. Among them, the shielding support 140 located at one end far from the hydraulic support 200 to be withdrawn is the first shielding support 140, and the connection line between the first shielding support 140 and the main winch 111 is parallel to the second direction X. The reversing wheel assembly 120 and the second pulley 132 are both arranged on the first shielding support 140. The distribution directions of the upper rope assembly 130, the reversing wheel assembly 120 and the main winch 111 are parallel to the second direction X, so as to reduce the traction loss of the main winch 111 and the auxiliary winch. In order to avoid interference between the upper rope assembly 130 and the reversing wheel assembly 120, the position of the second pulley 132 is higher than the position of the fixed seat 122, and the first pulley 121 can move to a position lower than the second pulley 132.

[0055] According to some embodiments of the present invention, at least two connection components 150 are serially connected to the end of the traction rope 110 far from the main winch 111, and the connection components 150 are detachably connected to the hydraulic support 200 to be withdrawn. During the equipment layout in the early stage of the hydraulic support withdrawal work, the hydraulic support 200 to be withdrawn is connected to the connection components 150 one by one, so that the hydraulic support 200 to be withdrawn is serially connected to the traction rope 110. During the hydraulic support withdrawal process, when the withdrawal of one hydraulic support 200 to be withdrawn is completed, it is not necessary to reconnect the next hydraulic support 200 to be withdrawn to the traction rope 110, making the hydraulic support withdrawal process more coherent, avoiding personnel staying in the working area, and improving safety.

[0056] As Figure 2 With Figure 4 shown, according to some embodiments of the present invention, a buffer rope section 112 is provided between any two adjacent connection components 150 of the traction rope 110, and the length of the buffer rope section 112 is L. Figure 4For the sake of convenience in representation, the portion of the towing rope 110 located between any two adjacent connecting components 150 is represented by a coil. In the actual operation process, there can be various ways to store the portion of the towing rope 110 located between any two adjacent connecting components 150, as long as it does not affect the retraction and extension of the towing rope 110 and the movement of the hydraulic support 200 to be withdrawn. For example, the distance between the reversing wheel assembly 120 and the main winch 111 is L1, the length of a section of the towing rope 110 wound around the reversing wheel assembly 120 is L2, and the distance between the hydraulic support 200 to be withdrawn and the reversing wheel assembly 120 is L3. L≥L1 + L2 + L3. In this way, during the process of withdrawing a hydraulic support 200 to be withdrawn, when the hydraulic support 200 to be withdrawn is retracted to the main winch 111, although the buffer rope section 112 will be stretched, since the length L of the buffer rope section 112 is greater than or equal to the sum of the distance L1 between the reversing wheel assembly 120 and the main winch 111, the length L2 of a section of the towing rope 110 wound around the reversing wheel assembly 120, and the distance L3 between the hydraulic support 200 to be withdrawn and the reversing wheel assembly 120, the buffer rope section 112 will not be tightened during the retraction process of the hydraulic support 200 to be withdrawn. Thus, during the process of withdrawing a hydraulic support 200 to be withdrawn, the towing rope 110 will not generate a traction force on the next hydraulic support 200 to be withdrawn, avoiding affecting the next hydraulic support 200 to be withdrawn.

[0057] As Figure 4 shown, according to some embodiments of the present invention, the connecting component 150 includes a hook 151 and a buckle 152. The hook 151 is connected to the hydraulic support 200 to be withdrawn. A second connecting rope is connected to the hook 151. The second connecting rope and the towing rope 110 are detachably connected through the buckle 152. Specifically, the second connecting rope is a steel wire rope. One end of the second connecting rope is connected to the hook 151. The second connecting rope and the towing rope 110 are both threaded through the buckle 152, and the second connecting rope and the towing rope 110 are locked through the buckle 152. The buckle 152 includes a U-shaped column, a fastening seat, and at least two nuts. The two ends of the U-shaped column are respectively threaded through the fastening seat. A through hole is formed between the U-shaped column and the fastening seat. The second connecting rope and the towing rope 110 are threaded through the through hole between the U-shaped column and the fastening seat. Threads are provided at both ends of the U-shaped column and are respectively connected to the nuts. Through the fastening seat and the nuts, the second connecting rope and the towing rope 110 are fixed in the through hole between the U-shaped column and the fastening seat.

[0058] As Figure 8 shown, according to the hydraulic support withdrawal device of the embodiment of the present invention, this embodiment also provides a hydraulic support withdrawal method. The hydraulic support withdrawal method includes the following steps:

[0059] S1. Connect the hydraulic support 200 to be withdrawn with the towing rope 110. Arrange the connection assemblies 150 according to the number of the hydraulic supports 200 to be withdrawn, and stably connect the connection assemblies 150 to the hydraulic supports 200 to be withdrawn.

[0060] S2. Drive the hook lock 131 to move from the first position to the second position, so that the towing rope 110 is hung on the reversing wheel assembly 120 in the first state.

[0061] Specifically, the auxiliary winch rotates to drive the driving rope 133 to move, thereby driving the hook lock 131 to move to the first position. Until the hook lock 131 moves to the first position, the towing rope 110 crosses the first pulley 121, and the auxiliary winch stops rotating. During this process, the height of the first pulley 121 is lower than the height of the hook lock 131 to prevent the hook lock 131 and the towing rope 110 from colliding with the first pulley 121 during movement. Drive the reversing wheel assembly 120 to switch to the first state. After that, drive the hook lock 131 to move from the first position to the second position, so that the towing rope 110 contacts and is hung on the reversing wheel assembly 120. As Figure 6 shown, when the reversing wheel assembly 120 is in the first state, the rotation axis of the first pulley 121 can extend in the vertical direction to enable the towing rope 110 to stably contact the peripheral wall of the first pulley 121. The auxiliary winch rotates in the reverse direction to drive the hook lock 131 to move to the second position. At the same time, the towing rope 110 moves towards the main winch 111. Since the reversing wheel assembly 120 is in the first state and the first pulley 121 is on the movement path of the towing rope 110, when the hook lock 131 moves to the second position, the towing rope 110 can be hung on the first pulley 121.

[0062] S3. Drive the main winch 111 to retract the towing rope 110 towards the position where the main winch 111 is located, so that the hydraulic support 200 to be withdrawn moves towards the side where the reversing wheel assembly 120 is located.

[0063] Specifically, after the towing rope 110 is hung on the first pulley 121, the main winch 111 rotates in the rope retracting direction, and the towing rope 110 has a traction force perpendicular to the second direction X on the responding support to pull the responding support out of its installation position.

[0064] S4. When the hydraulic support 200 to be withdrawn moves to the preset position towards the side where the reversing wheel assembly 120 is located, stop the main winch 111 from moving, and drive the reversing wheel assembly 120 to switch from the first state to the second state, so that the towing rope 110 disengages from the reversing wheel assembly 120.

[0065] Specifically, when the response support moves out of its installation position and reaches a preset position, the main winch 111 stops rotating, and the driving sheave assembly 120 switches from the first state to the second state. The included angle between the rotation axis of the first pulley 121 and the vertical direction increases, causing the towing rope 110 to disengage from the first pulley 121.

[0066] S5. Drive the main winch 111 to retract the towing rope 110 towards the position where the main winch 111 is located, so as to move the hydraulic support to be withdrawn towards the side where the main winch 111 is located.

[0067] Specifically, after the towing rope 110 disengages from the first pulley 121, the main winch 111 continues to rotate in the rope-retracting direction to pull the response support towards the position where the main winch 111 is located until the response support moves to the recovery position for the next step of work. During this process, the hook lock 131 moves towards the second position following the towing rope 110. After the response support moves to the recovery position, the main winch 111 stops rotating. At this time, the worker can remove the buckle 152 to disconnect the connecting assembly 150 from the towing rope 110. Then, drive the hook lock 131 to move to the first position through the auxiliary winch, and execute steps S2 to S4 to perform the withdrawal work of the next hydraulic support 200 to be withdrawn. Hang the towing rope 110 on the sheave assembly 120 through the rope-loading assembly 130 to pull the response support to the preset position, and then switch the sheave assembly 120 from the first state to the second state, so that the response support can be pulled to the recovery position by the main winch 111.

[0068] In summary, the embodiment of the present invention provides a hydraulic support withdrawal device. By moving the hook lock 131 from the first position to the second position and keeping the sheave assembly 120 in the first state, the towing rope 110 can be hung on the sheave assembly 120 to achieve the rope-loading operation. By switching the sheave assembly 120 from the first state to the second state, the towing rope 110 disengages from the sheave assembly 120 to achieve the rope-unloading operation. This reduces the manual operation process during the hydraulic support withdrawal work, improves the efficiency, and reduces the stay of personnel at the construction site, enhancing the safety during the hydraulic support withdrawal process.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic support withdrawal device, characterized in that, Comprising: A traction assembly, the traction assembly includes a traction rope (110) and a main winch (111), one end of the traction rope (110) is connected to the main winch (111), and the other end is connected to the hydraulic support (200) to be withdrawn; A reversing wheel assembly (120), the reversing wheel assembly (120) is arranged at an interval from the hydraulic support (200) to be withdrawn, the reversing wheel assembly (120) has a first state and a second state, the traction rope (110) can be hung on the reversing wheel assembly (120) in the first state, and the traction rope (110) is tensioned, and the traction rope (110) is disengaged from the reversing wheel assembly (120) in the second state; An upper rope assembly (130), the upper rope assembly (130) includes a hook lock (131), the hook lock (131) is movably connected to the traction rope (110), and the hook lock (131) can move between a first position and a second position relative to the main winch (111), When the hook lock (131) is located at the first position, the hook lock (131) is located on the side of the reversing wheel assembly (120) away from the main winch (111), and when the hook lock (131) is located at the second position, the hook lock (131) is located on the side where the main winch (111) is located; When the hook lock (131) moves from the first position to the second position, the traction rope (110) can be hung on the reversing wheel assembly (120) in the first state; when the reversing wheel assembly (120) switches from the first state to the second state, the traction rope (110) can be disengaged from the reversing wheel assembly (120).

2. The hydraulic support withdrawal device according to claim 1, characterized in that, The reversing wheel assembly (120) includes a first pulley (121), when the reversing wheel assembly (120) switches from the first state to the second state, the included angle between the rotation axis of the first pulley (121) and the vertical direction gradually increases, so that the traction rope (110) is disengaged from the first pulley (121).

3. The hydraulic support withdrawal device according to claim 2, characterized in that, The reversing wheel assembly (120) further includes a fixed seat (122), a rotating seat (123) and a driving member (124), the first pulley (121) is rotatably arranged at one end of the rotating seat (123) away from the main winch (111), one end of the rotating seat (123) close to the main winch (111) is rotatably connected to the fixed seat (122), and the driving member (124) connects the rotating seat (123) and the fixed seat (122).

4. The hydraulic support withdrawal device according to claim 2, characterized in that, The upper rope assembly (130) further includes a second pulley (132), a driving rope (133) and a sub-winch, the second pulley (132) is arranged on the side of the reversing wheel assembly ( 5. The hydraulic support withdrawal device according to any one of claims 1-4, characterized in that, The hydraulic support withdrawal device further includes at least two shielding supports (140) distributed along a first direction (Y), which is perpendicular to the distribution direction of the hydraulic support (200) to be withdrawn. Both the reversing wheel assembly (120) and the upper rope assembly (130) are connected to the shielding support (140).

6. The hydraulic support withdrawal device according to claim 1, wherein, One end of the towing rope (110) far from the main winch (111) is serially connected with at least two connecting components (150), and the connecting components (150) are detachably connected to the hydraulic support (200) to be withdrawn.

7. The hydraulic support withdrawal device according to claim 6, characterized in that, A buffer rope section (112) is provided between any two adjacent connecting components (150) of the towing rope (110). The length of the buffer rope section (112) is L, the distance between the reversing wheel assembly (120) and the main winch (111) is L1, the length of a section of the towing rope (110) wound around the reversing wheel assembly (120) is L2, and the distance between the hydraulic support (200) to be withdrawn and the reversing wheel assembly (120) is L3. L≥L1 + L2 + L3.

8. The hydraulic support withdrawal device according to claim 6, characterized in that, The connecting component (150) includes a hook (151) and a buckle (152). The hook (151) is connected to the hydraulic support (200) to be withdrawn. A second connecting rope is connected to the hook (151), and the second connecting rope and the towing rope (110) are detachably connected through the buckle (152).

9. A method for withdrawing a hydraulic support, characterized in that, The hydraulic support withdrawal method is based on the hydraulic support withdrawal device according to any one of claims 1 to 8, and the hydraulic support withdrawal method includes the following steps: Connect the hydraulic support (200) to be withdrawn to the towing rope (110); Drive the hook lock (131) to move from the first position to the second position, so that the towing rope (110) is hung on the reversing wheel assembly (120) in the first state; Drive the main winch (111) to move, so that the towing rope (110) is retracted towards the position where the main winch (111) is located, so that the hydraulic support (200) to be withdrawn moves towards the side where the reversing wheel assembly (120) is located.

10. The hydraulic support withdrawal method according to claim 9, wherein It further includes the following steps: When the hydraulic support (200) to be withdrawn moves towards the side where the reversing wheel assembly (120) is located to a preset position, stop the main winch (111) and drive the reversing wheel assembly (120) to switch from the first state to the second state, so that the towing rope (110) disengages from the reversing wheel assembly (120); Drive the main winch (111) to move, so that the towing rope (110) is retracted towards the position where the main winch (111) is located, so that the hydraulic support (200) to be withdrawn moves towards the side where the main winch (111) is located.

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