A shield support and shield method for withdrawing equipment from a fully-mechanized coal mining face

Abstract

A kind of shield support for fully mechanized working face equipment withdrawal, including base and top support plate being arranged on the base and being lifted, contact mechanism for interface roof is arranged on the top support plate, contact mechanism includes the support plate being arranged and being lifted, multiple spring support rods for lifting support plate are arranged below the support plate, contact steel belt is wound on the support plate, and contact steel belt can rotate around support plate.The present application provides a kind of shield support for fully mechanized working face equipment withdrawal and shielding method, it is convenient to move in coal lane, and can improve the withdrawal efficiency of fully mechanized working face equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shield support, in particular to a shield support and shield method for fully mechanized working face equipment withdrawal. BACKGROUND

[0002] The removal of fully mechanized working face equipment is particularly important for roof support, and is the most core and dangerous project in the removal project. Not only is the amount of support material used large, but the construction is also dangerous. After years of improvement and innovation, a process has been formed in which one or two shield supports are used to assist in supporting the roof, and after the shield support is supported, pitwood or single hydraulic props are set, and then the shield support is removed and the next device is removed.

[0003] At present, the shield support used for fully mechanized working face equipment withdrawal is mostly a conventional hydraulic support. The hydraulic support supports the roof after being expanded, and is moved to the next device after being contracted. Because the roof is uneven, the hydraulic support must be contracted significantly to avoid being stuck due to collision with the roof. However, the overall length of the hydraulic support will be significantly increased after being contracted significantly, resulting in inconvenience in movement. SUMMARY

[0004] In order to solve the problems in the prior art, the present application provides a shield support and shield method for fully mechanized working face equipment withdrawal, which facilitates movement in the coal lane and improves the withdrawal efficiency of the fully mechanized working face equipment.

[0005] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present application is as follows: a shield support for fully mechanized working face equipment withdrawal, comprising a base and a top support plate lifted on the base, a contact mechanism for contacting the roof at the interface is arranged on the top support plate, the contact mechanism comprises a support plate lifted, a plurality of spring support rods for lifting the support plate are arranged below the support plate, a contact steel belt is wound on the support plate, and the contact steel belt can rotate around the support plate.

[0006] As a further optimization of the shield support for fully mechanized working face equipment withdrawal, the contact mechanism comprises a base fixedly arranged on the top support plate, an installation slot is formed in the lower part of the base, the installation slot is communicated with a through slot penetrating through the top of the base, and the width of the through slot is smaller than the width of the installation slot, the support plate is integrally connected with two extension plates, the spring support rods lift the extension plates, and the support plate and the contact steel belt extend out of the through slot.

[0007] As the further optimization of the shield support for the equipment retreat of the fully mechanized coal mining face, two connecting plates are fixedly connected with the extension plate, support rollers for supporting the contact steel belt are arranged on the inner side of the contact steel belt, rotating shafts are arranged in the middle portions of the support rollers, the end portions of the rotating shafts are rotationally connected with the connecting plates, and the connecting plates are lifted by the spring support rods.

[0008] As the further optimization of the shield support for the equipment retreat of the fully mechanized coal mining face, a wear-resistant layer is fixedly arranged on the outer surface of the contact steel belt.

[0009] As the further optimization of the shield support for the equipment retreat of the fully mechanized coal mining face, the top support plate is telescopically connected with two telescopic support plates, and the two telescopic support plates are towards the side of the shield support.

[0010] As the further optimization of the shield support for the equipment retreat of the fully mechanized coal mining face, a cavity is arranged in the top support plate, a drive shaft is rotationally arranged in the cavity, a drive gear is fixedly arranged on the drive shaft, the drive gear is located between the two telescopic support plates, a rack is fixedly connected with the telescopic support plate and engaged with the drive gear, and two through holes are arranged in the cavity, and the two telescopic support plates are respectively arranged in the two through holes.

[0011] As the further optimization of the shield support for the equipment retreat of the fully mechanized coal mining face, a plurality of notches are arranged at the edges of the telescopic support plate, and the notches are uniformly distributed along a straight line.

[0012] A shield method for the equipment retreat of a fully mechanized coal mining face, based on the shield support, the method specifically comprises:

[0013] Determining the support position of the shield support;

[0014] Moving the shield support, and contacting the roof by using the contact mechanism.

[0015] Beneficial effects: the contact mechanism with a changeable height is arranged on the top support plate, so that the top support plate of the shield support can pass over the uneven position of the roof during the movement, and thus the shield support does not need to be greatly contracted in height during the movement, so that the overall length of the shield support is kept in a short state, the shield support is convenient to move, and the waiting time of the height lifting process is shortened, and the retreat efficiency of the fully mechanized coal mining face is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the overall structure of the shield support;

[0017] Figure 2 is a schematic view of the structure of the contact mechanism;

[0018] Figure 3is the schematic diagram of the matching mode of the support plate and the contact steel belt;

[0019] Figure 4 is the schematic diagram of the structure of the base body;

[0020] Figure 5 is the schematic diagram of the setting mode of the telescopic support plate;

[0021] Figure 6 is the schematic diagram of the structure of the telescopic support plate.

[0022] BRIEF DESCRIPTION OF DRAWINGS: 1 - base, 2 - top support plate, 3 - contact mechanism, 4 - telescopic support plate, 5 - side support plate, 6 - base body, 7 - mounting groove, 8 - spring support rod, 9 - contact steel belt, 10 - support plate, 11 - extension plate, 12 - connecting plate, 13 - rotating shaft, 14 - support roller, 15 - through groove, 16 - rack, 17 - drive shaft, 18 - drive gear, 19 - notch. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1 to 3 , a shield support for withdrawing equipment at a fully-mechanized coal mining face, comprising a base 1 and a top support plate 2 arranged in a lifting manner on the base 1, the top support plate 2 is provided with a contact mechanism 3 for the top plate at the interface, the contact mechanism 3 comprises a support plate 10 arranged in a lifting manner, a plurality of spring support rods 8 for jacking up the support plate 10 are arranged below the support plate 10, a contact steel belt 9 is wound on the support plate 10, and the contact steel belt 9 can rotate around the support plate 10. The shield support of the present application is improved based on the existing hydraulic support, can change the overall height, and the overall length is shortened when the height is raised, the overall length is increased when the height is lowered, and the specific structure can be referred to Figure 1 , which are mature prior art and will not be described here. In addition, the top support plate 2 can also be rotatably connected with a side support plate 5, which is also a conventional setting of the hydraulic support and will not be described here.

[0025] During the equipment recovery process of the fully mechanized working face, first of all, the shield support is moved to the position that needs to be supported, then the shield support is opened to make the top supporting plate 2 tightly contact on the roof, the shield support is used as temporary support, then the equipment is removed and moved out, after the equipment is removed, the pitwood or single hydraulic prop is used for support on the side of the shield support, then the shield support is retracted to reduce the height and move the shield support. During the movement of the shield support, because the roof is uneven, the contact steel belt 9 can contact the roof and move downward synchronously with the supporting plate 10 when being hindered, and the spring supporting rod 8 is compressed at the same time, so that the shield support can be smoothly moved, and when there is no hindrance, the spring supporting rod 8 can lift the supporting plate 10 again, the overall height of the supporting plate 10 and the contact steel belt 9 can be changed, and the contact steel belt 9 can rotate around the supporting plate 10 when being subjected to the friction force of the roof, so that the shield support is not stuck due to excessive friction force, therefore, the contact mechanism 3 can overcome the hindrance on the roof, so that the shield support can be smoothly moved without being greatly retracted, and the overall length is kept in a short state, which is convenient for moving, and the waiting time of the height lifting process can be shortened, and the recovery efficiency of the fully mechanized working face equipment is improved.

[0026] The present application sets the height changeable contact mechanism 3 on the top supporting plate 2, so that the top supporting plate 2 can overcome the uneven position of the roof during the movement of the shield support, therefore, the height of the shield support does not need to be greatly retracted during the movement, so that the overall length of the shield support is kept in a short state, which is convenient for moving the shield support, and the waiting time of the height lifting process can be shortened, and the recovery efficiency of the fully mechanized working face equipment is improved.

[0027] Please refer to Figure 4 , the supporting plate 10 is specifically provided as follows: the contact mechanism 3 comprises a base body 6 fixedly arranged on the top supporting plate 2, the base body 6 is provided with an installation groove 7 at the lower part, the installation groove 7 is communicated with a through groove 15 penetrating through the top of the base body 6, and the width of the through groove 15 is smaller than the width of the installation groove 7, the supporting plate 10 is integrally connected with two extension plates 11, the spring supporting rod 8 lifts the extension plates 11, and the supporting plate 10 and the contact steel belt 9 extend out of the through groove 15. The fixed end of the spring supporting rod 8 is fixed on the top supporting plate 2, and the movable end of the spring supporting rod 8 is lifted on the extension plate 11, because the width of the through groove 15 is smaller than the width of the installation groove 7, so the extension plate 11 cannot pass through the through groove 15, thereby avoiding the supporting plate 10 and the contact steel belt 9 from falling off, and prolonging the service life of the shield support. It should be noted that when the shield support is used for temporary support, the top supporting plate 2 needs to be arranged on the roof, at this time, the contact steel belt 9 and the supporting plate 10 are both downward into the through groove 15, and the spring supporting rod 8 is in a retracted state, so as to ensure that the top supporting plate 2 can contact the roof, and avoid the reaction force generated by the support from acting on the spring supporting rod 8, thereby protecting the spring supporting rod 8.

[0028] The contact steel belt 9 is specifically arranged as follows: the extension plate 11 is fixedly connected with two connecting plates 12, the inner side of the contact steel belt 9 is provided with a supporting roller 14 for supporting the contact steel belt 9, the middle part of the supporting roller 14 is provided with a rotating shaft 13, the end part of the rotating shaft 13 is rotationally connected with the connecting plate 12, and the spring supporting rod 8 lifts up the connecting plate 12. The spring supporting rod 8 lifts up the connecting plate 12, so that the spring supporting rod 8 does not need to be in contact with the contact steel belt 9, thereby ensuring that the contact steel belt 9 can smoothly rotate around the supporting plate 10 during the movement of the shield support, and will not be stuck due to the frictional force between the top plate, thereby ensuring that the shield support can smoothly move.

[0029] In order to protect the contact steel belt 9 and prolong the service life of the contact steel belt 9, a wear-resistant layer is fixedly arranged on the outer surface of the contact steel belt 9. The wear-resistant layer can be a ceramic particle layer and is bonded to the outer surface of the contact steel belt 9 by wear-resistant resin, thereby improving the wear resistance of the outer surface of the contact steel belt 9 and avoiding the breakage of the contact steel belt 9 due to friction with the top plate.

[0030] Please refer to Figure 1 , 5 and 6, before the shield support moves, pit props or single hydraulic props need to be arranged on the side, in order to protect the construction personnel during the support process, the top support plate 2 is telescopically connected with two telescopic support plates 4, and the two telescopic support plates 4 are towards the side of the shield support. Before the pit props or single hydraulic props are arranged, the telescopic support plates 4 can be first extended, and the construction personnel can install the pit props or single hydraulic props below the telescopic support plates 4, thereby avoiding the injury of the construction personnel caused by the falling stones of the top plate.

[0031] The telescopic support plates 4 are specifically provided as follows: a cavity is formed in the inside of the top support plate 2, a driving shaft 17 is rotatably arranged in the cavity, a driving gear 18 is fixedly arranged on the driving shaft 17, the driving gear 18 is located between the two telescopic support plates 4, the telescopic support plates 4 are fixedly connected with racks 16 which are engaged with the driving gear 18, the cavity is further connected with two through holes, and the two telescopic support plates 4 are respectively extended from the two through holes. When the telescopic support plates 4 need to be extended, the driving shaft 17 is driven to rotate by a motor or manually, the driving gear 18 rotates when the driving shaft 17 rotates, the two racks 16 are simultaneously moved because the driving gear 18 is engaged with the racks 16, and the two racks 16 are moved in opposite directions because the driving gear 18 is located between the two telescopic support plates 4, so the driving gear 18 can drive the two racks 16 to move in opposite directions, thereby the two telescopic support plates 4 are respectively driven to extend to the two sides of the shield support by the two racks 16, and the two telescopic support plates 4 do not need to be controlled separately, which is more convenient and fast. When the driving shaft 17 is driven to rotate by the motor, the motor 14 can be arranged at the side of the top support plate 2 and drive the driving shaft 17 to rotate through a gear set or a chain. Two guide rails can be arranged in the cavity, the guide rails are connected with the telescopic support plates 4 through a plurality of sliding blocks, so that the telescopic support plates 4 are guided by the cooperation of the guide rails and the sliding blocks, and the telescopic support plates 4 are prevented from being deflected.

[0032] In order to make it more convenient for the construction personnel to set the pit timber or the single hydraulic prop, a plurality of notches 19 are formed at the edges of the telescopic support plates 4 and uniformly distributed along a straight line. When the construction personnel sets the pit timber or the single hydraulic prop, the pit timber or the single hydraulic prop can be inserted through the notches 19, so that the pit timber or the single hydraulic prop is positioned by the notches 19, thereby facilitating the operation and enabling the construction personnel to operate completely below the telescopic support plates 4, which is safer.

[0033] A shield method for withdrawing equipment from a fully mechanized coal mining face, based on the shield support described above, the method specifically includes the following processes.

[0034] Firstly, the support position of the shield support is determined according to the position of the equipment to be withdrawn, and the specific determination method is a conventional means in the art, which will not be described here.

[0035] After the support position is determined, the shield support is moved, and the contact mechanism 3 is used to contact the roof during the movement, so that the shield support does not need to be greatly contracted, the overall height of the contact mechanism 3 can be lifted, and the contact steel belt 9 can be rotated due to friction to pass the uneven position of the roof, thereby avoiding the shield support from being stuck and ensuring that the overall length of the shield support will not be significantly increased, thereby ensuring that the shield support can be smoothly moved.

[0036] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shield support for withdrawing fully mechanized coal mining face equipment, comprising a base (1) and a top support plate (2) arranged on the base (1) in a lifting manner, characterized in that: The top support plate (2) is provided with a contact mechanism (3) for the interface roadway roof, the contact mechanism (3) comprises a support plate (10) arranged in a lifting manner, a plurality of spring supporting rods (8) for jacking up the support plate (10) are arranged below the support plate (10), a contact steel belt (9) is arranged around the support plate (10), and the contact steel belt (9) can rotate around the support plate (10); The contact mechanism (3) comprises a base body (6) fixedly arranged on the top support plate (2), a mounting groove (7) is formed in the lower part of the base body (6), the mounting groove (7) is communicated with a through groove (15) penetrating through the top of the base body (6), and the width of the through groove (15) is smaller than the width of the mounting groove (7), the support plate (10) is integrally connected with two extension plates (11), the spring supporting rods (8) jack up the extension plates (11), and the support plate (10) and the contact steel belt (9) extend out of the through groove (15); The extension plates (11) are fixedly connected with two connecting plates (12), the inner side of the contact steel belt (9) is provided with a supporting roller (14) for supporting the contact steel belt (9), a rotating shaft (13) penetrates through the middle part of the supporting roller (14), the end part of the rotating shaft (13) is rotatably connected with the connecting plate (12), and part of the spring supporting rods (8) jack up the connecting plate (12); The top support plate (2) is telescopically connected with two telescopic support plates (4), and the two telescopic support plates (4) are located towards the side of the shield support; A cavity is formed in the inside of the top support plate (2), a driving shaft (17) is rotatably arranged in the cavity, a driving gear (18) is fixedly sleeved on the driving shaft (17), and the driving gear (18) is located between the two telescopic support plates (4), the telescopic support plates (4) are fixedly connected with a rack (16) engaged with the driving gear (18), and the cavity is also communicated with two through holes, and the two telescopic support plates (4) extend out of the two through holes respectively.

2. The shield support for withdrawing fully mechanized coal mining face equipment according to claim 1, characterized in that: A wear-resistant layer is fixedly arranged on the outer surface of the contact steel belt (9).

3. The shield support for withdrawing fully mechanized coal mining face equipment according to claim 1, characterized in that: A plurality of notches (19) are formed in the edge of the telescopic support plate (4), and the notches (19) are uniformly distributed along a straight line.

4. A shield method for withdrawing fully mechanized coal mining face equipment, based on the shield support according to claim 1, characterized in that: The method specifically comprises: Determining the support position of the shield support; Moving the shield support, and contacting the roadway roof by using the contact mechanism (3).

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