A step-moving support shelter device and a step-moving support shelter method

Abstract

The application discloses a step-moving type support shelter device and a step-moving type support shelter method. The support shelter device comprises four vertically arranged bidirectional telescopic support columns, two transversely arranged telescopic beams, four positioning transmission assemblies and two rotary drive assemblies. Two support columns form a gantry frame structure by supporting one telescopic beam together. Each support column is externally provided with one slidable and non-rotatable positioning transmission assembly. Each rotary drive assembly is connected with two positioning transmission assemblies outside two support columns on the same side of each group, so that the support column in the telescopic state rotates around the support column in the supporting state. During the rotation process, the telescopic state support column and the corresponding telescopic beam pass through the inside of the gantry frame structure formed by the support state support column and the corresponding telescopic beam. The device has the advantages of step-moving, no manual carrying, two-by-two alternating shelter, no repeated support, small roof breaking risk and small collapse risk.

Description

Technical Field

[0001] This invention relates to the field of support and cover technology, specifically to a step-moving support and cover device and a step-moving support and cover method. Background Technology

[0002] Currently, the support and protection of rectangular openings or near-horizontal openings in the roof and floor slabs mostly rely on hydraulic single-column supports or methods such as supporting timber stacks or round logs. These methods are ineffective, consume a lot of timber, require manual handling, and place workers in extremely dangerous environments. In this situation, attempts have been made to use protective supports similar to those found in ordinary coal mine hydraulic supports, or to use single hydraulic support columns in conjunction with crossbeams for support and protection. However, these methods generally suffer from poor support and protection effectiveness, dangerous operation, repeated support leading to roof damage, and the risk of support equipment being buried by roof collapses. The risks are high and the uncertainties are significant. Summary of the Invention

[0003] Therefore, the present invention provides a step-moving support cover device and a step-moving support cover method to solve one or more of the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A first aspect of the present invention provides a step-moving support cover device, comprising:

[0006] Four vertically arranged bidirectional retractable support columns, two in each of the left and right columns, with the front left and front right support columns forming one group and the rear left and rear right support columns forming another group.

[0007] Two horizontally arranged telescopic beams are set up in correspondence with the two sets of support columns, and the two ends of the telescopic beams are connected to the top of the two support columns in the same set to form a gantry frame structure.

[0008] Four positioning transmission components are provided, corresponding one-to-one with the four support columns. The positioning transmission components are sleeved on the outer side of the middle section of the support column. The positioning transmission components can slide along the limited length of the support column but cannot rotate relative to it.

[0009] Two rotary drive components are installed corresponding to the two columns of support columns. The two ends of the rotary drive components are sleeved on the outside of the two positioning transmission components of the two columns of support columns in the same column and are connected to the two positioning transmission components for transmission. This is used to make the support column in the retracted state rotate around the support column in the supported state in the same column. During the rotation, the support column in the retracted state carries the corresponding telescopic beam through the gantry frame structure composed of the support column in the supported state and the corresponding telescopic beam, thereby realizing stepping movement and no repeated support.

[0010] Optionally, the four support columns can be arranged side-by-side or supported by one of two groups, providing good support and protection to prevent roof collapse and ensure the safety of personnel and equipment. The four support columns can alternately provide protection in pairs, moving forward by rotating and stepping. This alternating protection and rotating movement allows the two groups of support columns in the retracted state to move forward in any direction, and the rotation angle can be adjusted as needed. The movement and support and protection methods are diverse and flexible, which can more flexibly meet the support and protection needs of complex working conditions such as underground mines, greatly reducing the risk of support columns being buried by roof collapse, while providing a stable and safe protection space. Compared with ordinary protection supports, the rotating and stepping method of the support and protection device provided by this invention can achieve non-repeated support for the top and bottom plates of the stressed object, reducing damage to the top and bottom plates, and thus reducing the risk of roof breakage and collapse.

[0011] Furthermore, the support column includes a base, a lower support cylinder, a top seat, an upper support cylinder, and a telescopic drive mechanism. The lower support cylinder is vertically fixed on the base, and the upper support cylinder is vertically fixed under the top seat. The upper and lower support cylinders are slidably fitted together to form the column body of the support column. The innermost part of the upper and lower support cylinders is the inner cylinder, and the outermost part is the outer cylinder. The telescopic drive mechanism is located inside the inner cylinder, with its upper end connected to the top seat or the upper support cylinder and its lower end connected to the base or the lower support cylinder.

[0012] Furthermore, the telescopic beam includes a crossbeam and sliders that are slidably inserted at both ends of the crossbeam with a limited length, and the other end of the slider is slidably inserted into the top seat with a limited length.

[0013] Furthermore, the positioning transmission assembly includes an upper sleeve flange, a sleeve limiting block, and a sleeve. The upper sleeve flange is fixed to the upper end of the sleeve, and both are sleeved on the outside of the column. A vertical sleeve limiting groove is provided on the outside of the column. The sleeve limiting block is set on the upper sleeve flange, and the inner end of the sleeve limiting block extends into the sleeve limiting groove.

[0014] Furthermore, several sleeve limiting grooves of equal height form a circle, and multiple circles of sleeve limiting grooves are provided on the column; several sleeve limiting blocks are arranged in a circle around the flange of the sleeve, and several sleeve limiting blocks in one circle correspond one-to-one with several sleeve limiting grooves in one circle.

[0015] Furthermore, the rotary drive assembly includes a connecting housing and a rotary motor. The connecting housing is rotatably connected to two sleeves of two positioning transmission assemblies outside two support columns in the same row, and a bearing is provided at the connection point. The rotary motor is located inside the connecting housing, and a driven gear is provided outside the sleeve. The rotary motor is driven by meshing with the driven gear.

[0016] Optionally, the telescopic drive mechanism can be configured as a bidirectional telescopic drive mechanism, and the positioning transmission component can be directly connected to the middle of the telescopic drive mechanism. At the same time, the telescopic drive mechanism and the inner or outer cylinder in the support column can slide axially but cannot rotate circumferentially, which can also achieve the same effect; or, the positioning transmission component can be connected to either the top seat or the base through another set of telescopic drive mechanisms to achieve the same effect.

[0017] Optionally, the inner cylinder is connected to the base and the outer cylinder is connected to the top seat; or the inner cylinder is connected to the top seat and the outer cylinder is connected to the base; both can satisfy the function of the present invention. Similarly, the positioning transmission component is sleeved on the periphery of the outer cylinder and is slidably and axially limited to the outer cylinder, or the positioning transmission component is sleeved on the periphery of the inner cylinder and is slidably and axially limited to the inner cylinder, which can also achieve the function of the present invention.

[0018] Optionally, the positioning transmission assembly is provided with a limiting groove, and the outer cylinder is provided with a limiting block; or, the outer cylinder is provided with a limiting groove, and the positioning transmission assembly is provided with a limiting block; or the positioning transmission assembly is provided with a limiting groove, and the inner cylinder is provided with a limiting block; or, the inner cylinder is provided with a limiting groove, and the positioning transmission assembly is provided with a limiting block; the limiting groove extends axially, and the limiting block is fitted in the limiting groove and slidably disposed along the limiting groove.

[0019] Optionally, the rotary drive assembly includes one or two drive gears and one or two matching rotary motors, and the positioning transmission assembly includes a driven gear fixedly connected thereto. One drive gear meshes with two driven gears, or two drive gears mesh with two driven gears respectively. The rotary motor drives the drive gear to rotate around the driven gears to drive another support column to rotate around the central axis of the support column where the current driven gear is located.

[0020] A second aspect of the present invention provides a stepping movement support cover method, comprising the following steps:

[0021] Step S1: Place the stepping mobile support cover device provided in the first aspect of the present invention between the top plate and the bottom plate of the support area;

[0022] Step S2: A set of support columns extends into a supporting state, supporting between the top plate and the bottom plate, and the telescopic beam at the top of the column supports the underside of the top plate between the support columns.

[0023] In step S3, another set of support columns retracts into a retracted state. Under the action of the positioning transmission component, the top of this set of support columns and the telescopic beam are lower than the top of the support columns and the telescopic beam of the support state group by a certain height, and the bottom of this set of support columns is separated from the base plate by a certain height.

[0024] Step S4: The rotary drive component operates, causing the retracted support column to rotate around the support column in the same row. At the same time, the two support columns and telescopic beams of the retracted group pass through the interior of the gantry frame structure formed by the two support columns and telescopic beams of the support group. During the rotation, the two telescopic beams remain parallel, and the telescopic beams in the lateral movement automatically extend and retract according to the distance between the two rotating support columns to adjust their length.

[0025] Step S5: After the retracted support column rotates to a certain angle and stops rotating, it extends and supports the top and bottom plates. The telescopic beam at its top supports the underside of the top plate between the support columns, completing one step-movement support.

[0026] S6. Repeat steps S3-S5 to complete multiple steps of movement support.

[0027] Specifically:

[0028] Place the support and cover device between the top and bottom plates of the object under stress;

[0029] The telescopic drive mechanism is activated, causing the first and third support columns to be in a supported state and the second and fourth support columns to be in a retracted state. The first and second support columns are supported between the top plate and the bottom plate, and the rotary drive assembly and the second and fourth support columns are both spaced apart from the top plate and the bottom plate.

[0030] The first rotary drive assembly drives the second support column to rotate around the first support column by an angle α, while the second rotary drive assembly drives the fourth support column to rotate around the third support column by an angle α.

[0031] The telescopic drive mechanism is activated, causing the second and fourth support columns to be in a supported state and the first and third support columns to be in a retracted state. The second and fourth support columns are supported between the top plate and the bottom plate. The first rotary drive assembly, the second rotary drive assembly, and the first and third support columns are all spaced apart from the top plate and the bottom plate.

[0032] The first rotary drive assembly drives the first support column to rotate around the second support column by an angle β, while the second rotary drive assembly drives the third support column to rotate around the fourth support column by an angle β.

[0033] Repeat the above steps to advance the support and protection device.

[0034] The present invention has the following advantages:

[0035] The four support columns can alternately provide cover in pairs and move forward by turning and stepping, without the need for manual handling; the lack of repeated support for the top and bottom plates of the stressed object reduces damage to the top and bottom plates, thereby reducing the risk of top plate breakage and collapse, greatly reducing the risk of the support columns being buried by roof collapse, while providing a stable and safe cover space. Attached Figure Description

[0036] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0037] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0038] Figure 1 A perspective view of a stepping mobile support and cover device provided in an embodiment of the present invention;

[0039] Figure 2 A perspective view of the stepping mobile support cover device provided in an embodiment of the present invention after removing part of its structure;

[0040] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0041] Figure 4 for Figure 2 Enlarged view of B in the middle;

[0042] Figure 5 for Figure 2 Enlarged view of C;

[0043] Figure 6 This is a cross-sectional view of the stepping mobile support and cover device provided in an embodiment of the present invention;

[0044] Figure 7 for Figure 6 Enlarged view of D;

[0045] Figure 8 for Figure 6 Enlarged view of E in the middle;

[0046] Figure 9 for Figure 6 Sectional view of FF;

[0047] Figure 10 for Figure 6 Enlarged view of G in the middle;

[0048] Figure 11 This is a schematic diagram showing the motion relationship of the various components of the stepping mobile support and cover device provided in an embodiment of the present invention;

[0049] Figure 12 This is an application diagram of the stepping mobile support and cover device provided in an embodiment of the present invention;

[0050] Figure 13 This is a schematic diagram of a certain time point during the stepping movement of the stepping mobile support cover device provided in an embodiment of the present invention.

[0051] Figure 14 A process diagram illustrating a linear stepping support cover method using the stepping movement support cover device provided in an embodiment of the present invention.

[0052] Figure 15 This diagram illustrates the process of using the stepping-moving support cover device provided in this embodiment of the invention for a turning-type stepping-moving support cover method.

[0053] In the diagram: 100-First support column, 200-Second support column, 300-Third support column, 400-Fourth support column, 500-First telescopic beam, 600-Rotation drive assembly, 700-Positioning transmission assembly, 800-Second rotation drive assembly, 900-Second telescopic beam, 13-Telescopic drive mechanism, 14-Inner cylinder, 15-Outer cylinder, 101-Top seat, 102-Base, 103-Top seat limit block, 15 1-Sleeve limiting groove, 501-Crossbeam, 502-Slider, 503-Crossbeam limiting block, 521-Crossbeam limiting groove, 522-Top seat limiting groove, 601-Connecting box, 602-Rotary motor, 603-Drive gear, 701-Sleeve upper flange, 702-Sleeve limiting block, 703-Bearing, 704-Sleeve, 705-Driven gear, 604-Box cover, 901-Top plate, 902-Bottom plate. Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0056] like Figures 1 to 15 As shown, this embodiment provides a step-moving support cover device and a step-moving support cover method.

[0057] refer to Figures 1 to 12 The support and cover device includes support columns and a rotary drive assembly 600. The support columns include a first support column 100, a second support column 200, a third support column 300, and a fourth support column 400, all vertically arranged. Each of the four support columns includes a top seat 101, a base 102, a telescopic drive mechanism 13, an inner cylinder 14, and an outer cylinder 15. The inner cylinder 14 is vertically fixed to the base 102, and the outer cylinder 15 is vertically fixed below the top seat 101. The outer cylinder 15 is slidably sleeved on the outside of the inner cylinder 400. The telescopic drive mechanism 13 is connected between the corresponding top seat 101 and base 102 and is located inside the inner cylinder 14. The telescopic drive mechanism 13 is used to drive the top seat 101 and base 102 connected to it to move closer or further away along the axial direction (i.e., vertical direction). At the same time, the inner cylinder 14 and the outer cylinder 15 slide relative to each other. The support column has a supported state and a retracted state. The support column in the supported state plays a supporting role.

[0058] The telescopic drive mechanism 13 drives the top seat 101 and the base 102 to move away from each other vertically until the support column is in a supported state. In this supported state, both the top and bottom ends of the support column are against the object being supported, providing support and protection. The telescopic drive mechanism 13 then drives the top seat 101 and the base 102 to move closer together vertically until the support column reaches a retracted state. In this retracted state, at least one of the top and bottom ends of the support column is detached from the object being supported and no longer provides support and protection. The vertical length of the support column in the supported state is greater than the vertical length of the support column in the retracted state.

[0059] The first rotary drive assembly 600 is connected between the first support column 100 and the second support column 200, and can drive one of them in the retracted state to rotate around the other in the supported state. In other words, the rotary drive assembly 600 can drive one of them in the retracted state to rotate about the central axis of the other in the retracted state. During rotation, the rotary drive assembly 600 and the support column in the retracted state are located vertically between the top and bottom ends of the support column in the supported state. Similarly, the second rotary drive assembly 800 is connected between the third support column 300 and the fourth support column 400, and has the same function as the first rotary drive assembly 600.

[0060] The slider 502 at one end of the first telescopic beam 500 is slidably connected to the top of the top seat 101 of the first support column 100, and the slider 502 at the other end is slidably connected to the top of the top seat 101 of the third support column 300. When the support column is in a supporting state, the crossbeam 501 also abuts against the object under force, playing a supporting and protective role. Similarly, the sliders 502 at both ends of the second telescopic beam 900 are slidably connected to the tops of the top seats 101 of the second support column 200 and the fourth support column 400, respectively. When the support column is in a supporting state, the crossbeam 501 of the second telescopic beam also abuts against the object under force, playing a supporting and protective role. When the first support 100 and the third support column 300 are in a supported state, and the second support column 200 and the fourth support column 400 are in a retracted state, the second telescopic beam 900 descends and is located below the first telescopic beam 500. When the second support column 200 and the fourth support column 400 rotate around the first support column 100 and the third support column 300 respectively, driven by the first rotary drive assembly 600 and the second rotary drive assembly 800 respectively, the second telescopic beam 900 rotates accordingly and passes under the first telescopic beam 500. The telescopic beam includes a set of crossbeams 501 and two sets of sliders 502. The two ends of the crossbeams 501 are slidably and limitably connected to the two sets of sliders 502. The two sets of sliders 502 are slidably and limitably connected to the tops of the two sets of top seats 101 respectively, thereby connecting the support columns in pairs. Specifically, the end of the crossbeam 501 is provided with a T-shaped groove; the top of the top seat 101 is provided with a slot, the upper half of which is adapted to the cross-section of the crossbeam 501, and the lower half is an inverted T-shaped groove; the cross-section of the slider 502 is I-shaped, the upper half of which is adapted to the T-shaped groove, and the lower half of which is adapted to the inverted T-shaped groove; the side of the slider 502 is provided with two transverse grooves, which are distributed one above the other, the upper one being the crossbeam limiting groove 521, and the lower one being the top seat limiting groove 522; the end side of the crossbeam 501 is provided with a crossbeam limiting block 503, the inner end of which extends into the crossbeam limiting groove 521, thereby forming a limited sliding design; the top side of the top seat 101 is provided with a top seat limiting block 103, the inner end of which extends into the top seat limiting groove 522, thereby forming a limited sliding design.

[0061] When the first support column 100 and the third support column 300 are in a supported state, and the second support column 200 and the fourth support column 400 are in a retracted state, the first support column 100 and the third support column 300 are supported between the top plate 901 and the bottom plate 902 of the object under force. The top and bottom ends of the second support column 200 and the fourth support column 400, and the first rotary drive assembly 600 and the second rotary drive assembly 800 are all located vertically between the top and bottom ends of the first support column 100 and the third support column 300, that is, between the top plate 901 and the bottom plate 902 of the object under force, with a certain distance from the top plate and the bottom plate of the object under force. The first rotary drive assembly 600 drives the second support column 200 to rotate around the central axis of the first support column 100 as the rotation center line, and the second rotary drive assembly 800 drives the fourth support column 400 to rotate around the central axis of the third support column 300 as the rotation center line. The second telescopic beam 900 rotates along with it and passes under the first telescopic beam 500.

[0062] When the second support column 200 and the fourth support column 400 are in a supported state, and the first support column 100 and the third support column 300 are in a retracted state, the second support column 200 and the fourth support column 400 are supported between the top plate 901 and the bottom plate 902 of the object under force. The top and bottom ends of the first support column 100 and the third support column 300, the first rotary drive assembly 600 and the second rotary drive assembly 800 are all located vertically between the top and bottom ends of the second support column 200 and the fourth support column 400, that is, between the top plate 901 and the bottom plate 902 of the object under force, with a certain distance from the top plate and the bottom plate of the object under force. The first rotary drive assembly 600 drives the first support column 100 to rotate around the central axis of the second support column 200 as the rotation center line, and the second rotary drive assembly 800 drives the third support column 300 to rotate around the central axis of the fourth support column 400 as the rotation center line. The first telescopic beam 500 rotates along with it and passes under the second telescopic beam 900.

[0063] The first support column 100, the second support column 200, the third support column 300 and the fourth support column 400 can be in a supporting state at the same time, that is, they are simultaneously supported between the top plate 901 and the bottom plate 902 of the object under force.

[0064] like Figures 12 to 15 As shown, the stepping movement support cover method includes the following steps:

[0065] The supporting cover is placed between the top plate 901 and the bottom plate 902 of the object under stress;

[0066] The telescopic drive mechanism 13 operates such that the first support column 100 and the third support column 300 are in a supported state, while the second support column 200 and the fourth support column 400 are in a retracted state. The first support column 100 and the third support column 300 are supported between the top plate 901 and the bottom plate 902. The first rotary drive assembly 600, the second rotary drive assembly 800, the second support column 200 and the fourth support column 400 are all spaced apart from the top plate 901 and the bottom plate 902.

[0067] The first rotary drive assembly 600 and the second rotary drive assembly 800 respectively drive the second support column 200 to rotate around the first support column 100 by an angle α, and the fourth support column 400 to rotate around the third support column 300 by an angle β.

[0068] Repeat the above steps to advance the support and protection device.

[0069] The support and cover device provided in this embodiment of the invention includes a first support column 100, a second support column 200, a third support column 300, a fourth support column 400, a first telescopic beam 500, and a second telescopic beam 900. The support columns can be used together with the telescopic beams, or they can be used independently. Specifically, the first support column 100 and the second support column 200, or the third support column 300 and the fourth support column 400, can be used separately to achieve the support and cover effect and also allow for rotational and stepping movements.

[0070] The first, third, second, and fourth support columns can provide alternating cover, moving forward by rotating and stepping. This alternating cover and rotating movement allows the support columns, even in their retracted state, to advance in a certain direction, and the rotation angle can be adjusted as needed. The diverse and flexible movement and support cover methods can meet the support cover needs of complex underground working conditions such as mines and tunnels, greatly reducing the risk of hydraulic supports or other support devices being buried by roof collapses, while providing a stable and safe cover space.

[0071] Furthermore, compared to ordinary protective supports, the rotary stepping method of the support and protective device provided in this embodiment can achieve non-repeated support for the top and bottom plates of the stressed object, reducing damage to the top and bottom plates, and thus reducing the risk of top plate breakage and collapse.

[0072] The first rotary drive assembly 600 can rotate around each of the first support column 100 and the second support column 200, and the second rotary drive assembly 800 can rotate around each of the third support column 300 and the fourth support column 400. When one set of two support columns is in the supported state, in order to facilitate rotation, the other set of two support columns is retracted and its bottom end is raised to disengage from the base plate 902, and its top end is retracted to disengage from the top plate 901 and descend to a certain height. The two retracted support columns are supported by the first rotary drive assembly 600 and the second rotary drive assembly 800 respectively, until they reach the retracted state. At this time, the first rotary drive assembly 600 and the second rotary drive assembly 800 need to bear the overall weight of the support column in the retracted state, and the first rotary drive assembly 600 and the second rotary drive assembly 800 themselves should also have a gap between themselves and the top plate 901 and the base plate 902.

[0073] The support and protection device includes a positioning and transmission assembly 700. The positioning and transmission assembly 700 is fitted onto the support column in a corresponding manner and is fixed to the support column in the circumferential direction. That is, the positioning and transmission assembly 700 cannot rotate relative to the support column on which it is fitted. The positioning and transmission assembly 700 is fitted and fixed on the circumference of the column between the top seat 101 and the base 102 of the support column. The positioning and transmission assembly 700 is fixed to the first rotary drive assembly 600 or the second rotary drive assembly 800 in the axial direction and can be rotatably arranged relative to it in the circumferential direction.

[0074] In order to achieve the axial fixation of the positioning transmission assembly 700 and the rotary drive assembly 600 and their relative rotation in the circumferential direction, at least one bearing is fitted between the rotary drive assembly and the positioning transmission assembly 700. The outer ring of the bearing is connected to the rotary drive assembly 600, and the inner ring of the bearing is connected to the positioning transmission assembly 700.

[0075] The positioning transmission assembly 700 and the support columns are axially slidable relative to each other. To allow the rotary drive assembly to rise to a certain height during rotation, the outer cylinder 15 is provided with an array of sleeve limiting grooves 151, and the upper flange 701 of the sleeve of the positioning transmission assembly 700 is provided with a ring of sleeve limiting blocks 702. Each ring of sleeve limiting blocks 702 engages with a ring of sleeve limiting grooves 151 on the outer cylinder 15, forming a circumferentially limited (non-rotatable) and axially slidable keyed connection structure. The other four support columns are configured similarly to the positioning transmission assembly.

[0076] When the support column rises, the top seat 101 and the outer cylinder 15 rise. After rising a certain distance, they drive the sleeve limiting block 702 upward, which in turn drives the positioning transmission assembly 700 and the rotary drive assembly 600 upward, so that the bottom end of the rotary drive assembly 600 is above the bottom end of the support column in the supported state. By selecting sleeve limiting grooves 151 of different heights to cooperate with the sleeve limiting block 702, the support device can be adjusted to accommodate different top and bottom plate heights, ensuring that the rotary drive assembly is positioned at a certain position above the bottom end of the support column when it is in the supported state. In other words, the sleeve limiting groove 151 on the support column in the supported state will lift the rotary drive assembly to a certain height through the sleeve limiting block 702, creating a certain gap between its bottom end and the bottom plate 902, so that the rotary drive assembly can rotate and the retracted support column can be lifted away from the bottom plate 902 by a certain distance. The first support column 100, the third support column 300, the second support column 200, and the fourth support column 400 alternately contract and extend. The sleeve limiting grooves 151 of the first support column 100, the third support column 300, and the sleeve limiting grooves 151 of the second support column 200 and the fourth support column 400 alternately lift the first rotary drive assembly 600 and the second rotary drive assembly 800, so that there is always a certain gap between the first rotary drive assembly 600 and the second rotary drive assembly 800 and the base plate 902.

[0077] Meanwhile, the sleeve limiting groove 151 on the outer cylinder 15 and the sleeve limiting block 702 achieve mutual fixation between the positioning transmission assembly 700 and the outer cylinder 15 in the circumferential direction, preventing the positioning transmission assembly 700 from being driven to rotate by the rotary drive assembly when it rotates. Alternatively, the sleeve limiting groove 151 can also be provided on the positioning transmission assembly 700, while the sleeve limiting block 702 can be provided on the inner cylinder 14 or the outer cylinder 15.

[0078] The support column includes an inner cylinder 14 and an outer cylinder 15 sleeved on the outside of the inner cylinder 14. The inner cylinder 14 and the outer cylinder 15 are slidably arranged relative to each other along the axial direction. The telescopic drive mechanism 13 is located inside the inner cylinder 14. The positioning transmission assembly 700 is sleeved on the outside of the outer cylinder 15, and the positioning transmission assembly 700 and the outer cylinder 15 are slidably arranged relative to each other along the axial direction. In the figure, the outer cylinder 15 is on top and the inner cylinder 14 is on the bottom. The sleeve limiting groove 151 is vertically arranged on the outside of the outer cylinder 15. A ring of sleeve limiting grooves 151 is evenly distributed around the periphery of the outer cylinder 15, and the different rings of sleeve limiting grooves 151 have different heights.

[0079] The outer cylinder 15 is located below the top seat 101 and extends downwards, while the inner cylinder 14 is located above the base 102 and extends upwards. The outer circumferential surface of the inner cylinder 14 contacts the inner circumferential surface of the outer cylinder 15 and is slidably disposed relative to it. The inner circumferential surface of the positioning transmission assembly 700 contacts the outer circumferential surface of the outer cylinder 15 and is slidably disposed relative to it. In other alternative embodiments, the outer cylinder 15 is connected to the upper part of the base 102 and extends upwards, while the inner cylinder 14 is connected to the lower part of the top seat 101 and extends downwards.

[0080] The telescopic drive mechanism 13 is a high-tonnage column cylinder, vertically mounted inside the inner cylinder 14. The telescopic drive mechanism 13 has a first hinge point at the upper end and a second hinge point at the lower end. The top seat 101 or the outer cylinder 15 is connected to the first hinge point, and the base 102 or the inner cylinder 14 is connected to the second hinge point. The column cylinder drive can move the top seat 101 and the base 102 up and down. This high-tonnage column cylinder can provide support force far exceeding that of ordinary timber stacks and single hydraulic support columns. Its support force and working resistance can even exceed those of ordinary hydraulic supports, providing excellent support and protection for underground engineering projects such as mines and tunnels.

[0081] When the telescopic drive mechanism 13 drives the second support column 200 and the fourth support column 400 to switch from the supported state to the retracted state, the inner cylinder 14 and the outer cylinder 15 slide towards each other, the top seat 101 of the support column moves downward, and when the sleeve limiting groove 151 is activated, the inner cylinder 14 and the base 102 move upward, maintaining a certain distance from the floor 902.

[0082] Each positioning transmission assembly 700 includes a sleeve upper flange 701, a sleeve limiting block 702, a bearing 703, a sleeve 704, and a driven gear 705. The sleeve upper flange 701 is fixed to the upper end of the sleeve 704. A ring (multiple spaced) of sleeve limiting blocks 702 is provided on the upper circumference of the sleeve upper flange 701. The inner end of the sleeve limiting block 702 extends into the sleeve limiting groove 151. When the support column is in the retracted state, the sleeve limiting block 702 abuts against the top of the limiting groove 151, thereby creating a limiting position. Bearing 703 is disposed between sleeve 704 and rotary drive assembly (referring to connecting housing 601). Two bearings 703 are provided, located on the inner sides of the upper and lower ends of connecting housing 601 respectively; they are a first bearing 703 and a second bearing 703. The inner ring of the first bearing 703 is connected to the upper flange 701 and sleeve 704 on its upper and lower sides respectively, and its outer ring is connected to connecting housing 601. The inner ring of the second bearing 703 is connected to sleeve 704, and its outer ring is connected to housing cover 604. Housing cover 604 is connected to connecting housing 601. This allows the rotary drive assembly to rotate around positioning transmission assembly 700. The driven gear 705 is an external gear ring, fixed to the outside of sleeve 704, generally positioned between the upper and lower bearings 703 in height.

[0083] The rotary drive assembly includes a connecting housing 601, a rotary motor 602, a drive gear 603, and a housing cover 604. The connecting housing 601 covers two support columns on one side of the left and right sides, and a sleeve 704 covers the two support columns on that side. The rotary motor 602 is fixed inside the connecting housing 601 and located between the two support columns on that side. The drive gear 603 is connected to the rotary motor 602 and meshes with the driven gear 705. The connecting housing 601 houses each of the first support column 100 and the second support column 200. The outer cylinders 15 of the first support column 100 and the second support column 200 extend from the upper and lower ends of the connecting housing 601. The first drive gear 603 and the first rotary motor 602 are both located inside the connecting housing 601. The connecting housing 601 also includes two housing covers 604, each housing cover 604 covering one of the two support columns. A first bearing 703 is fitted between the flange 701 on the sleeve and the connecting housing 601. The structure of the second rotary drive assembly 800 is the same as that of the first rotary drive assembly 600. The second rotary drive assembly 800 is connected to the third support column 300 and the fourth support column 400.

[0084] The rotary motor 602 drives the drive gear 603 to rotate, and the drive gear 603 simultaneously drives the two driven gears 705 meshing with it to rotate. Of course, two sets of drive devices can be set up simultaneously to drive the driven gears 705 separately. When the drive gear 603 drives the driven gears 705 to rotate, when the support column where the driven gear 705 is located is in the supported state, it will drive the rotary drive assembly to rotate around the central axis of the support column in the supported state; when the support column where the driven gear 705 is located is in the retracted state, it will drive the entire support column to rotate relative to the rotary drive assembly. At this time, when the first rotary drive assembly 600 and the second rotary drive assembly 800 are driven synchronously, the first telescopic beam 500 and the second telescopic beam 900 can move parallel to each other in the horizontal plane, moving closer or further apart.

[0085] In other alternative embodiments, the rotary drive assembly may be configured to be axially fixed relative to the support column and circumferentially rotatable relative to it.

[0086] As an example, the support shield device includes positioning transmission components 700, which are correspondingly sleeved on the outside of the support column and axially fixed to each other, thereby fixing the axial position of the positioning transmission components 700. The positioning transmission components 700 are axially fixed to the rotary drive components, thereby fixing the axial position of the rotary drive components, and the bottom end of the rotary drive components is always located above the bottom end of the support column in the supported state.

[0087] The positioning transmission assembly 700 is sleeved on and connected to the support column. The two are fixed to each other in the circumferential direction and slidably connected in the axial direction. The rotary drive assembly is located outside the positioning transmission assembly 700, and a bearing 703 is fitted between them, enabling them to be fixed to each other in the axial direction and to rotate relative to each other in the circumferential direction. Throughout the stepping process, a certain gap is maintained between the bottom end of the rotary drive assembly and the base plate 902, and the rotary drive assembly bears the weight of the support column and telescopic beam in the retracted state when rotating.

[0088] The rotation movement method can be flexibly selected according to different working conditions. There are two methods: linear stepping movement support and cover method and turning stepping movement support and cover method. In essence, both of these methods are the usage methods of the aforementioned stepping movement support and cover device.

[0089] like Figures 12 to 14 As shown, the linear stepping movement support cover method specifically includes the following steps:

[0090] Step Z1: Place the support and cover device between the top plate 901 and the bottom plate 902 of the object under force. The telescopic drive mechanism 13 of the first support column 100 and the third support column 300 extends to put the first support column 100 and the third support column 300 in a supported state. The telescopic drive mechanism 13 of the second support column 200 and the fourth support column 400 retracts to put the second support column 200 and the fourth support column 400 in a retracted state. The first support column 100 and the third support column 300 are supported between the top plate 901 and the bottom plate 902. Under the action of the sleeve limiting block 702 and the sleeve limiting groove 151 of the first support column 100 and the third support column 300, the first rotary drive assembly 600, the second rotary drive assembly 800, the second support column 200, and the fourth support column 400 are all spaced apart from the top plate 901 and the bottom plate 902.

[0091] Step Z2: The rotary motor 602 of the first rotary drive assembly 600 operates, and the driving gear 603 rotates around the driven gear 705 of the first support column 100. The rotary motor 602 of the second rotary drive assembly 800 operates, and the driving gear 603 rotates around the driven gear 705 of the third support column 300. These actions drive the first rotary drive assembly 600 and the second rotary drive assembly 800 to rotate in opposite directions, thereby causing the second support column 200 to rotate 180° counterclockwise around the first support column 100, and the fourth support column 400 to rotate 180° clockwise around the third support column 300. Simultaneously, the driving gear 603 drives the driven gear 705 of the second support column 200 to rotate. The rotating gear 705 causes the second support column 200 to rotate in the opposite direction relative to the first support column 100. The driving gear 603 drives the driven gear 705 of the fourth support column 400 to rotate, causing the fourth support column 400 to rotate in the opposite direction relative to the third support column 300. At this time, the sliders 502 at both ends of the second telescopic beam 900 slide into the crossbeam 501 and the top seat 101 respectively, so that the second telescopic beam 900 is shortened or lengthened as a whole, and the second telescopic beam 900 is parallel to the first telescopic beam 500 in the horizontal direction, so that the second telescopic beam 900, the second support column 200, and the fourth support column 400 pass together under the first telescopic beam 500.

[0092] Step Z3: The telescopic drive mechanism 13 of the second support column 200 and the fourth support column 400 extends to put the second support column 200 and the fourth support column 400 into a supported state.

[0093] This completes the first step of movement.

[0094] Step Z4: Similarly, while the second support column 200 and the fourth support column 400 are in a supporting state, the first support column 100 and the third support column 300 can move to the next step.

[0095] By continuously repeating the above steps, the support and cover device can be moved forward step by step, thus providing cover.

[0096] like Figure 12 , 13 As shown in Figure 15, the turning-stepping movement support cover method specifically includes the following steps:

[0097] Step Z1: Place the support and cover device between the top plate 901 and the bottom plate 902 of the object under force. The telescopic drive mechanism 13 of the first support column 100 and the third support column 300 extends to put the first support column 100 and the third support column 300 in a supported state. The telescopic drive mechanism 13 of the second support column 200 and the fourth support column 400 retracts to put the second support column 200 and the fourth support column 400 in a retracted state. The first support column 100 and the third support column 300 are supported between the top plate 901 and the bottom plate 902. Under the action of the sleeve limiting block 702 and the sleeve limiting groove 151 of the first support column 100 and the third support column 300, the first rotary drive assembly 600, the second rotary drive assembly 800, the second support column 200, and the fourth support column 400 are all spaced apart from the top plate 901 and the bottom plate 902.

[0098] Step Z2: The rotary motor 602 of the first rotary drive assembly 600 operates, and the driving gear 603 rotates around the driven gear 705 of the first support column 100. The rotary motor 602 of the second rotary drive assembly 800 operates, and the driving gear 603 rotates around the driven gear 705 of the third support column 300. This drives the first rotary drive assembly 600 and the second rotary drive assembly 800 to rotate in opposite directions, thereby causing the second support column 200 to rotate counterclockwise by an angle β around the first support column 100, and the fourth support column 400 to rotate clockwise by an angle α around the third support column 300. Simultaneously, the driving gear 603 drives the driven gear of the second support column 200 to rotate clockwise. When wheel 705 rotates, it causes the second support column 200 to rotate in the opposite direction relative to the first support column 100. The driving gear 603 drives the driven gear 705 of the fourth support column 400 to rotate, causing the fourth support column 400 to rotate in the opposite direction relative to the third support column 300. At this time, the sliders 502 at both ends of the second telescopic beam 900 slide into the inside of the crossbeam 501 and the top seat 101, respectively, so that the second telescopic beam 900 is shortened or lengthened as a whole, and the second telescopic beam 900 is parallel to the first telescopic beam 500 in the horizontal direction, so that the second telescopic beam 900, the second support column 200, and the fourth support column 400 pass together under the first telescopic beam 500.

[0099] Step Z3: The telescopic drive mechanism 13 of the second support column 200 and the fourth support column 400 extends to put the second support column 200 and the fourth support column 400 into a supported state.

[0100] This completes the first step of movement.

[0101] Step Z4: Similarly, with the second support column 200 and the fourth support column 400 in a supported state, the first support column 100 and the third support column 300 can then move to the next step. The first support column 100 rotates counterclockwise by an angle δ around the second support column 200, and the third support column 300 rotates clockwise by an angle γ around the fourth support column 400.

[0102] By continuously repeating the above steps, the support and cover device can move forward in a straight line or turn, thus providing cover.

[0103] The beneficial effects of the stepping-moving support cover device and stepping-moving support cover method in this embodiment are as follows:

[0104] 1. In some working conditions that require retreating while working, such as the withdrawal of hydraulic supports in coal mine fully mechanized mining and the advance protection of fully mechanized mining roadways, this support and protection device can automatically alternate protection and move step by step, thereby greatly shortening the suspended distance required for safety and providing non-repeated support for the roof. It effectively avoids the damage caused by repeated support of the roof by ordinary hydraulic supports or existing ordinary protection devices and measures, and greatly improves the safe construction environment of related projects.

[0105] 2. The support and protection device of the present invention has a built-in large-tonnage column cylinder as a driving device. Its supporting force and working resistance are comparable to those of ordinary hydraulic supports. Moreover, it is an active support, which greatly improves the safety of the support and protection.

[0106] 3. The support and cover device of the present invention has a stepping movement function, which can move without the aid of other auxiliary equipment and devices, and the movement and positioning are flexible, which greatly improves the wide applicability of the support and cover, greatly simplifies the related support and cover procedures, reduces the number of workers required in hazardous environments, and greatly improves the safety and construction efficiency of related engineering projects, thus having good economic and social benefits.

[0107] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A stepping, mobile support and cover device, characterized in that, include: Four vertically arranged bidirectional retractable support columns, two in each of the left and right columns, with the front left and front right support columns forming one group and the rear left and rear right support columns forming another group. Two horizontally arranged telescopic beams are set up in correspondence with the two sets of support columns, and the two ends of the telescopic beams are connected to the top of the two support columns in the same set to form a gantry frame structure. Four positioning transmission components are provided, corresponding one-to-one with the four support columns. The positioning transmission components are sleeved on the outer side of the middle section of the support column. The positioning transmission components can slide along the limited length of the support column but cannot rotate relative to it. Two rotary drive components are provided corresponding to the two columns of support columns. The two ends of the rotary drive components are sleeved on the outside of the two positioning transmission components of the two columns of support columns in the same column and are connected to the two positioning transmission components for transmission. This is used to make the support column in the retracted state rotate around the support column in the supported state in the same column. During the rotation, the support column in the retracted state carries the corresponding telescopic beam through the gantry frame structure composed of the support column in the supported state and the corresponding telescopic beam. The support column includes a base, a lower support cylinder, a top seat, an upper support cylinder, and a telescopic drive mechanism. The lower support cylinder is vertically fixed on the base, and the upper support cylinder is vertically fixed under the top seat. The upper and lower support cylinders are slidably sleeved together to form the column body of the support column. The inner part of the upper and lower support cylinders is the inner cylinder, and the outer part is the outer cylinder. The telescopic drive mechanism is set inside the inner cylinder, with its upper end connected to the top seat or the upper support cylinder and its lower end connected to the base or the lower support cylinder. The telescopic beam includes a crossbeam and sliders that are slidably inserted at both ends of the crossbeam with a limited length. The other end of the slider is slidably inserted into the top seat with a limited length.

2. The stepping-moving support and cover device according to claim 1, characterized in that, The positioning transmission assembly includes an upper flange on the sleeve, a sleeve limiting block, and a sleeve. The upper flange on the sleeve is fixed to the upper end of the sleeve, and both are sleeved on the outside of the column. A vertical sleeve limiting groove is provided on the outside of the column. The sleeve limiting block is set on the upper flange on the sleeve, and the inner end of the sleeve limiting block extends into the sleeve limiting groove.

3. The stepping-moving support and cover device according to claim 2, characterized in that, Several sleeve limiting grooves of equal height form a circle, and multiple circles of sleeve limiting grooves are provided on the column; several sleeve limiting blocks are arranged in a circle around the flange of the sleeve, and several sleeve limiting blocks in one circle correspond one-to-one with several sleeve limiting grooves in one circle.

4. The stepping-moving support and cover device according to claim 2, characterized in that, The rotary drive assembly includes a connecting housing and a rotary motor. The connecting housing is rotatably connected to two sleeves of two positioning transmission assemblies outside two support columns in the same row, and a bearing is provided at the connection point. The rotary motor is located inside the connecting housing, and a driven gear is provided outside the sleeve. The rotary motor is driven by meshing with the driven gear through the driving gear.

5. A method for providing support and cover while stepping forward, characterized in that, Includes the following steps: Step S1: Place the stepping mobile support cover device according to any one of claims 1-4 between the top plate and the bottom plate of the support area; Step S2: A set of support columns extends into a supporting state, supporting between the top plate and the bottom plate, and the telescopic beam at the top of the column supports the underside of the top plate between the support columns. In step S3, another set of support columns retracts into a retracted state. Under the action of the positioning transmission component, the top of this set of support columns and the telescopic beam are lower than the top of the support columns and the telescopic beam of the support state group by a certain height, and the bottom of this set of support columns is separated from the base plate by a certain height. Step S4: The rotary drive component operates, causing the retracted support column to rotate around the support column in the same row. At the same time, the two support columns and telescopic beams of the retracted group pass through the interior of the gantry frame structure formed by the two support columns and telescopic beams of the support group. During the rotation, the two telescopic beams remain parallel, and the telescopic beams in the lateral movement automatically extend and retract according to the distance between the two rotating support columns to adjust their length. Step S5: After the retracted support column rotates to a certain angle and stops rotating, it extends and supports the top and bottom plates. The telescopic beam at its top supports the underside of the top plate between the support columns, completing one step-movement support. S6. Repeat steps S3-S5 to complete multiple steps of movement support.

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