Shield support and method of shielding thereof

Abstract

The application discloses a shield support and a shield method thereof. The shield support comprises a support column and a connecting structure. The support column comprises a first support column and a second support column arranged vertically. The support column has a supporting state and a retracted state. The connecting structure is connected between the first support column and the second support column and can drive one of the support columns in the retracted state to rotate around the other support column in the supporting state. The first support column and the second support column can support in parallel or separately, provide good support and shield, avoid roof collapse, and ensure the safety of the shielded personnel and equipment. The first support column and the second support column move forward by rotating and stepping, so that the support column in the retracted state can step forward in any direction, can more flexibly and variously meet the support and shield needs of complex working conditions such as mine tunnels, mining working faces and tunnels, and greatly reduces the risk of the support column being buried by roof collapse, and simultaneously provides a stable and safe shield space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of support and shelter for mines, tunnels, mining faces and the like, and in particular to a shelter support and a shelter method for a fully mechanized coal mining face. BACKGROUND

[0002] At present, in the process of withdrawing and supporting the hydraulic support of fully mechanized coal mining, wood piles and roundwood are mostly used for support and shelter, which has poor support effect, consumes a large amount of wood, is time-consuming and laborious, and makes the workers work in a very dangerous environment. In addition, the related art also attempts to use a shelter support similar to a common hydraulic support, or uses a single hydraulic support column combined with a cross beam for support and shelter, but generally has the problems of poor support and shelter effect, dangerous operation, time-consuming and laborious, and the support equipment is easily buried by roof collapse, which makes the withdrawing work efficiency low, and has high risk coefficient and high uncertainty. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, an embodiment of the present application proposes a shelter support. An embodiment of the present application also proposes a shelter method for a shelter support.

[0004] The shelter support of the embodiment of the present application comprises a support column, the support column comprises a first support column and a second support column arranged vertically, the support column comprises a top support part, a bottom support part and a driving mechanism, the driving mechanism is connected between the top support part and the bottom support part for driving the two to approach or move away along the axial direction, the support column has a support state and a contraction state, the support column in the support state plays a supporting role; a connecting structure is connected between the first support column and the second support column, and can drive one of the support columns in the contraction state to rotate around the other support column in the support state, and the connecting structure and the support column in the contraction state are located between the top end and the bottom end of the support column in the support state in the vertical direction when rotating.

[0005] The shelter support provided by the embodiment of the present application comprises a first support column and a second support column, the first support column and the second support column can support side by side or individually, provide good support and shelter, avoid roof collapse, and ensure the safety of the sheltered personnel and equipment.

[0006] The first support column and the second support column can alternately shield and move forward by rotating and stepping, the alternating shielding and rotating and stepping moving mode enables the support column in the retracted state to step forward in any direction, the rotating angle can be adjusted as required, the moving mode is various and flexible in support and shielding mode, the support and shielding needs of complex working conditions such as underground mines can be more flexibly met, the risk of the support column being buried by roof collapse is greatly reduced, and a stable and safe shielding space is provided.

[0007] In addition, compared with the ordinary shielding support, the rotating and stepping mode of the shielding support provided by the embodiment of the application can realize no repeated support of the roof and the floor of the stressed object, reduce the damage to the roof and the floor, and further reduce the risk of roof crushing and collapse.

[0008] In some embodiments, the shielding support comprises a sleeve assembly, the sleeve assembly is sleeved on the support column one by one and fixed with the support column in the circumferential direction, the sleeve assembly is located between the top support part and the bottom support part, and the sleeve assembly and the connecting structure are fixed in the axial direction and relatively rotatable in the circumferential direction.

[0009] In some embodiments, at least one bearing is matched between the connecting structure and the sleeve assembly, the outer ring of the bearing is connected with the connecting structure, and the inner ring of the bearing is connected with the sleeve assembly.

[0010] In some embodiments, the sleeve assembly and the support column are relatively slidably arranged in the axial direction, the shielding support further comprises a plurality of cables, the top of the cable is connected with the top support part, and the bottom of the cable is connected with the connecting structure or the sleeve assembly; when the support column is in the support state, the cable is tensioned, and under the action of the tension of the cable, the bottom end of the connecting structure is located at a distance above the bottom end of the support column. In addition, by adjusting the length of the cable, the support height of the support column and the distance between the bottom end of the connecting structure and the bottom end of the support column can be adjusted within a certain range.

[0011] In some embodiments, the support column comprises an inner cylinder and an outer cylinder sleeved on the inner cylinder, the inner cylinder and the outer cylinder are relatively slidably arranged in the axial direction, the driving mechanism is located inside the inner cylinder, one of the bottom of the top support part and the top of the bottom support part is connected with the inner cylinder, the other of the bottom of the top support part and the top of the bottom support part is connected with the outer cylinder, and the sleeve assembly is sleeved on the outer cylinder and is relatively slidably arranged in the axial direction with the outer cylinder.

[0012] In some embodiments, the sleeve assembly is provided with a limiting groove, and the outer cylinder is provided with a limiting protrusion, or the outer cylinder is provided with a limiting groove, and the sleeve assembly is provided with a limiting protrusion; the limiting groove extends in the axial direction, and the limiting protrusion is fitted in the limiting groove and is slidably arranged along the limiting groove.

[0013] In some embodiments, two sleeves are included, which are respectively sleeved on the two support columns and are located between the top end and the bottom end of the support column in the support state in the vertical direction; the driving mechanism is located inside the corresponding sleeve and has independently-acting first and second driving ends, the first driving end is connected with the top support part, and the second driving end is connected with the first support part.

[0014] The sleeve and the corresponding support column are fixed in the circumferential and axial directions, and the sleeve and the connecting structure are fixed in the axial direction and are relatively rotatably arranged in the circumferential direction.

[0015] Alternatively, the sleeve and the corresponding support column are fixed in the axial direction and are relatively rotatably arranged in the circumferential direction, and the sleeve and the connecting structure are fixed in the circumferential and axial directions.

[0016] In some embodiments, the connecting structure includes first and second driving gears, the first support column includes a first driven gear meshing with the first driving gear, and the second support column includes a second driven gear meshing with the second driving gear; driving the first driving gear to rotate around the first driven gear to drive the second support column to rotate around the central axis of the first support column, and driving the second driving gear to rotate around the second driven gear to drive the first support column to rotate around the central axis of the second support column.

[0017] In some embodiments, the connecting structure includes a connecting box body, the connecting box body is sleeved on each of the first and second support columns, the top support part and the bottom support part respectively extend from two ends of the connecting box body, and the first and second driving gears are located in the connecting box body; the connecting structure further includes first and second rotating motors located in the connecting box body, the first rotating motor is used to drive the first driving gear, and the second rotating motor is used to drive the second driving gear.

[0018] The shielding method of the shielding support provided by the embodiments of the present application includes the following steps:

[0019] The shielding support is placed between the top plate and the bottom plate of the stressed object.

[0020] The driving mechanism acts, so that the first support column is in a supporting state, the second support column is in a retracted state, the first support column is supported between the top plate and the bottom plate, and the connecting structure and the second support column are both spaced apart from the top plate and the bottom plate;

[0021] The connecting structure drives the second support column to rotate around the first support column by an angle α;

[0022] The driving mechanism acts, so that the second support column is in a supporting state, the first support column is in a retracted state, the second support column is supported between the top plate and the bottom plate, and the connecting structure and the first support column are both spaced apart from the top plate and the bottom plate;

[0023] The connecting structure drives the first support column to rotate around the second support column by an angle β;

[0024] The above steps are repeated to step the shield support. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a shield support provided by an embodiment of the present application.

[0026] Figure 2 is a partial schematic diagram of a shield support provided by an embodiment of the present application.

[0027] Figure 3 is a cross-sectional view of a shield support provided by an embodiment of the present application.

[0028] Figure 4 is an A-A cross-sectional view of a shield support provided by an embodiment of the present application.

[0029] Figure 5 is an application diagram of a shield support provided by an embodiment of the present application.

[0030] Figure 6 is a schematic diagram of a shielding method provided by an embodiment one of the present application.

[0031] Figure 7 is a schematic diagram of a shielding method provided by an embodiment two of the present application.

[0032] Figure 8 is a schematic diagram of a shielding method provided by an embodiment three of the present application.

[0033] REFERENCE NUMERALS:

[0034] The shield support 600, the first support column 601a, the second support column 601b, the top support part 611, the bottom support part 612, the driving mechanism 613, the inner cylinder 614, the outer cylinder 615, the limiting protrusion 616, the first driven gear 617, the second driven gear 618, the connecting structure 602, the first driving gear 621, the second driving gear 622, the connecting box 623, the box cover 6231, the first rotary motor 624, the second rotary motor 625, the cable 603, the sleeve assembly 604, the first sleeve assembly 604a, the second sleeve assembly 604b, the upper flange 641, the sleeve 642, the lower flange 643, the limiting groove 644, the first bearing 651, the second bearing 652, the top plate 661, the bottom plate 662, and the electric control assembly 607. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] Below, the basic structure of the shield support 600 provided by the embodiments of the present application is described according to Figures 1-4 The shield support 600 includes a support column and a connecting structure 602, the support column includes a first support column 601a and a second support column 601b arranged vertically. The first support column 601a and the second support column 601b each include a top support part 611, a bottom support part 612, and a driving mechanism 613 connected between the corresponding top support part 611 and bottom support part 612. The driving mechanism 613 is used to drive the top support part 611 and the bottom support part 612 connected thereto to move along the axial direction (i.e., the vertical direction) to approach or move away from each other. The support column has a support state and a contraction state. In the support state, the support column plays a supporting role.

[0037] Specifically, the driving mechanism 613 drives the top support part 611 and the bottom support part 612 to move away from each other along the vertical direction until the support column is in the support state. In the support state, the top end and the bottom end of the support column are in contact with the force-bearing object, and the support column plays a supporting role. The driving mechanism 613 drives the top support part 611 and the bottom support part 612 to move close to each other along the vertical direction until the support column reaches the contraction state. In the contraction state, at least one of the top end and the bottom end of the support column is separated from the force-bearing object, and the support column no longer plays a supporting role. The length of the support column in the vertical direction in the support state is greater than the length of the support column in the vertical direction in the contraction state.

[0038] The connecting structure 602 is connected between the first support column 601a and the second support column 601b, and can drive one of the support columns in the retracted state to rotate around the other support column in the supporting state, in other words, the connecting structure 602 can drive one of the support columns in the retracted state to rotate around the center axis of the other support column in the supporting state as the rotation center line. When rotating, the connecting structure 602 and the support column in the retracted state are located between the top end and the bottom end of the support column in the supporting state in the vertical direction.

[0039] Specifically, when the first support column 601a is in the supporting state and the second support column 601b is in the retracted state, the first support column 601a is supported between the top plate 661 and the bottom plate 662 of the force-bearing object, and the top end and the bottom end of the second support column 601b and the connecting mechanism 2 are both located between the top end and the bottom end of the first support column 601a in the vertical direction, that is, between the top plate 661 and the bottom plate 662 of the force-bearing object, and have a certain interval with the top plate and the bottom plate of the force-bearing object, and the connecting structure 602 drives the second support column 601b to rotate around the center axis of the first support column 601a as the rotation center line.

[0040] When the second support column 601b is in the supporting state and the first support column 601a is in the retracted state, the second support column 601b is supported between the top plate 661 and the bottom plate 662 of the force-bearing object, and the top end and the bottom end of the first support column 601a and the connecting mechanism 2 are both located between the top end and the bottom end of the second support column 601b in the vertical direction, that is, between the top plate 661 and the bottom plate 662 of the force-bearing object, and have a certain interval with the top plate and the bottom plate of the force-bearing object, and the connecting structure 602 drives the first support column 601a to rotate around the center axis of the second support column 601b as the rotation center line.

[0041] Of course, the first support column 601a and the second support column 601b can be in the supporting state at the same time, that is, supported between the top plate 661 and the bottom plate 662 of the force-bearing object at the same time.

[0042] The embodiment of the present application also provides a shielding method of the shielding support 600, as shown in the figure, the shielding method comprises the following steps: Figure 5 As shown in the figure, the shielding method comprises the following steps:

[0043] Placing the shielding support 600 between the top plate 661 and the bottom plate 662 of the force-bearing object;

[0044] Driving the mechanism 613 to act, so that the first support column 601a is in the supporting state, the second support column 601b is in the retracted state, the first support column 601a is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the second support column 601b both have a certain interval with the top plate 661 and the bottom plate 662;

[0045] The connecting structure 602 drives the second support column 601b to rotate around the first support column 601a by an angle α;

[0046] The driving mechanism 613 acts, so that the second support column 601b is in a supporting state, the first support column 601a is in a retracted state, the second support column 601b is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the first support column 601a are both spaced apart from the top plate 661 and the bottom plate 662;

[0047] The connecting structure 602 drives the first support column 601a to rotate around the second support column 601b by an angle β;

[0048] The above steps are repeated to step the shield support 600.

[0049] The shield support provided by the embodiment of the present application includes a first support column and a second support column, which can be supported side by side or individually, providing good support and shelter, avoiding roof collapse, and ensuring the safety of personnel and equipment under shelter.

[0050] The first support column and the second support column can alternately shelter and move forward by rotation and stepping. This alternating sheltering and rotating stepping movement allows the support column in the retracted state to step forward in any direction and can adjust the rotation angle as needed. The movement and support sheltering methods are diverse and flexible, and can flexibly meet the support sheltering needs of complex working conditions such as underground mines, greatly reducing the risk of the support column being buried by roof collapse, and providing a stable and safe sheltering space.

[0051] In addition, compared with ordinary shield supports, the rotating stepping method of the shield support provided by the embodiment of the present application can realize non-repeated support of the roof and the floor of the stressed object, reduce damage to the roof and the floor, and further reduce the risk of roof collapse and collapse.

[0052] The connecting structure 602 of the shield support 600 provided by the embodiment of the present application can rotate around each of the first support column 601a and the second support column 601b. When one support column is in a supporting state, in order to facilitate rotation, the other support column is retracted and its bottom end is lifted to be separated from the bottom plate 662, and its top end is retracted to be separated from the top plate 661, the support column is supported by the connecting structure 602 until it reaches a retracted state. At this time, the connecting structure 602 needs to bear the entire weight of the support column in the retracted state, and the connecting structure 602 itself should also have a space between the top plate 661 and the bottom plate 662.

[0053] In some embodiments, as Figures 1-3As shown, the shield support 600 comprises a sleeve assembly 604, which is sleeved on the support column one by one and fixed with the support column in the circumferential direction, that is, the sleeve assembly 604 cannot rotate relative to the support column on which it is sleeved. The sleeve assembly 604 is located between the top support part 611 and the bottom support part 612, and the sleeve assembly 604 is axially fixed with the connecting structure 602 and circumferentially rotatable relative to the connecting structure 602.

[0054] In order to realize the axial fixation and circumferential rotation of the sleeve assembly 604 and the connecting structure 602, in some embodiments, as shown in the left part of FIG. 6, the sleeve assembly 604 is provided with a plurality of annular grooves 605, and the connecting structure 602 is provided with a plurality of annular protrusions 606, which are matched with the annular grooves 605. Figure 3 As shown, at least one bearing can be matched between the connecting structure 602 and the sleeve assembly 604. The outer ring of the bearing is connected with the connecting structure 602, and the inner ring of the bearing is connected with the sleeve assembly 604.

[0055] In other alternative embodiments, the axial fixation and circumferential rotation between the connecting structure 602 and the sleeve assembly 604 can be realized through the cooperation of the annular clamping groove and the sliding block. For example, the connecting structure 602 is provided with a sliding block, the outer circumferential surface of the sleeve assembly 604 is provided with an annular clamping groove, the sliding block is matched in the annular clamping groove and can slide along the clamping groove, and the sliding block is limited in the axial direction by abutting against the wall surface of the annular clamping groove.

[0056] Further, in some embodiments, the sleeve assembly 604 and the support column are axially slidably arranged. In order to lift the connecting structure 602 to a certain height when the connecting structure 602 rotates, the shield support 600 comprises a plurality of cables 603. As shown in FIG. 6, the top of the cable 603 is connected with the top support part 611, and the bottom of the cable 603 is connected with the sleeve assembly 604. Figure 2 As shown, a part of the plurality of cables 603 is arranged on the first support column 601a, and another part is arranged on the second support column 601b. As shown in FIG. 6, the plurality of cables 603 surrounds the first support column 601a, and the plurality of cables 603 surrounds the second support column 601b. Figure 2 As shown, a part of the plurality of cables 603 is arranged on the first support column 601a, and another part is arranged on the second support column 601b. As shown in FIG. 6, the plurality of cables 603 surrounds the first support column 601a, and the plurality of cables 603 surrounds the second support column 601b. Figure 3As shown, when the support column is in the supporting state, the cable 603 connected to the support column is tensioned, and under the action of the cable 603, the bottom end of the connecting structure 602 is located above the bottom end of the support column in the supporting state. That is, the tension of the cable 603 on the support column in the supporting state lifts the connecting structure 602 to a certain height, so that the bottom end of the connecting structure 602 has a certain interval in front of the bottom plate 662, so as to rotate the connecting structure 602. The first support column 601a and the second support column 601b are alternately contracted and elongated, and the cable 603 of the first support column 601a and the cable 603 of the second support column 601b alternately lift the connecting structure 602, so that the bottom end of the connecting structure 602 always has a certain interval in front of the bottom plate 662.

[0057] In addition, by adjusting the length of the cable 603, the supporting height of the support column and the height distance between the bottom end of the connecting structure 602 and the bottom end of the support column can also be adjusted within a certain range, that is, in the above embodiment, the supporting height of the support column and the height distance between the bottom end of the connecting structure 602 and the bottom end of the support column are related to the length of the cable 603.

[0058] Further, as shown in Figure 2 and Figure 3 The support column includes an inner cylinder 614 and an outer cylinder 615 sleeved with the inner cylinder 614, and the inner cylinder 614 and the outer cylinder 615 are arranged to be relatively slidable in the axial direction. The driving mechanism 613 is located inside the inner cylinder 614, and the sleeve assembly 604 is sleeved with the outer cylinder 615 and arranged to be relatively slidable in the axial direction with the outer cylinder 615.

[0059] In the embodiment shown in Figure 2 and Figure 3 The inner cylinder 614 is connected with the bottom of the top support part 611 and extends downward, and the outer cylinder 615 is connected with the bottom of the bottom support part 612 and extends upward. The outer circumferential surface of the inner cylinder 614 is in contact with and arranged to be relatively slidable with the inner circumferential surface of the outer cylinder 615. The inner circumferential surface of the sleeve assembly 604 is in contact with and arranged to be relatively slidable with the outer circumferential surface of the outer cylinder 614.

[0060] In other alternative embodiments, the inner cylinder 614 is connected with the bottom of the bottom support part 612 and extends upward, and the outer cylinder 615 is connected with the bottom of the top support part 611 and extends downward.

[0061] The driving mechanism 613 is a large-tonnage column oil cylinder, which is vertically arranged in the inner cylinder 614. The driving mechanism 613 has a first hinge point and a second hinge point. The top support part 611 is connected with the first hinge point, and the bottom support part 612 is connected with the second hinge point. The column oil cylinder drive can drive the top support part 611 and the bottom support part 612 to move up and down. The large-tonnage column oil cylinder can provide a supporting force far exceeding that of a general wood pile and a single hydraulic support column, and the supporting force can even exceed that of a general hydraulic support.

[0062] As shown in Figure 2 and Figure 3 , when the driving mechanism 613 drives the second support column 601b to transform from the supporting state to the retracted state, the top support part 611 of the support column moves downward, and a limit is generated when the top support part 611 reaches the top end of the upper flange 641. The bottom support part 612 moves upward under the pulling of the driving mechanism 613, the inner cylinder 614 and the outer cylinder 615 slide towards each other, that is, the inner cylinder 614 moves vertically downward, the outer cylinder 615 moves vertically upward, and the position of the sleeve assembly 604 in the vertical direction is relatively fixed under the pulling force of the cable 603 of the first support column 601a, and the outer cylinder 615 slides upward relative to the sleeve assembly 604.

[0063] In order to realize the mutual fixation in the circumferential direction between the sleeve assembly 604 and the outer cylinder 615, and avoid the sleeve assembly 604 from being driven to rotate by the connecting structure 602 when the connecting structure 602 rotates. Further, as shown in Figure 3 , the sleeve assembly 604 is provided with a limiting groove 644, and the outer cylinder 615 is provided with a limiting protrusion 616. The limiting groove 644 extends along the axial direction of the support column, and the limiting protrusion 616 is fitted in the limiting groove 644 and is slidably arranged along the limiting groove 644. Alternatively, the limiting groove 644 can also be arranged on the outer cylinder 14, and the limiting protrusion 616 is arranged on the sleeve assembly 604.

[0064] Specifically, as shown in Figure 2 and Figure 3 , the sleeve assembly 604 includes a first sleeve assembly 604a and a second sleeve assembly 604b. The first sleeve assembly 604a is sleeved with the first support column 601a, and the second sleeve assembly 604b is sleeved with the second support column 601b. Each sleeve assembly 604 includes an upper flange 641, a sleeve 642 and a lower flange 643 connected in sequence from top to bottom. The first bearing 651 is fitted between the upper flange 641 and the connecting structure 602, and the second bearing 652 is fitted between the lower flange 643 and the connecting structure 602, so that the connecting structure 602 can rotate around each of the first sleeve assembly 604a and the second sleeve assembly 604b, and is axially fixed with both. The limiting groove 644 is arranged on the lower flange 643, and the limiting protrusion 616 is arranged on the outer circumferential surface of the outer cylinder 615. The lower end of the cable 603 is connected to the connecting lug on the outer circumferential surface of the upper flange 641. When the support column is in the retracted state, the top support part 611 abuts against the top end of the upper flange 641, and a limit is generated.

[0065] In some embodiments, as shown in Figure 2 and Figure 4As shown, the connecting structure 602 comprises a first driving gear 621 and a second driving gear 622, the first support column 601a comprises a first driven gear 617, the first driven gear 617 is sleeved with the sleeve 642 of the first support column 601a and connected therewith, and the first driven gear 617 is engaged with the first driving gear 621. The second support column 601b comprises a second driven gear 618, the second driven gear 618 is sleeved with the sleeve 642 of the second support column 601b and connected therewith, and the second driven gear 618 is engaged with the second driving gear 622.

[0066] The connecting structure 602 comprises a driving device, such as Figure 2 As shown, the driving device comprises a first rotary motor 624 for driving the first driving gear 621 to rotate, and a second rotary motor 625 for driving the second driving gear 622 to rotate. The first rotary motor 624 drives the first driving gear 621 to rotate around the first driven gear 617, so as to realize that the connecting structure 602 drives the second support column 601b to rotate around the central axis of the first support column 601a, and the second rotary motor 625 drives the second driving gear 622 to rotate around the second driven gear 618, so as to realize that the connecting structure 602 drives the first support column 601a to rotate around the central axis of the second support column 601b.

[0067] As shown in Figure 1 and Figure 3 The connecting structure 602 comprises a connecting box 623, the connecting box 623 is sleeved with each of the first support column 601a and the second support column 601b, and the top support part 611 and the bottom support part 612 of the first support column 601a and the second support column 601b respectively extend from the upper and lower ends of the connecting box 623, and the first driving gear 621 and the second driving gear 622, the first rotary motor 624 and the second rotary motor 625 are all located in the connecting box 623. The connecting box 623 further comprises two box covers 6231, the two box covers 6231 are respectively sleeved with the two support columns, and the first bearing 651 is matched between the upper flange 641 and the box cover 6231.

[0068] As shown in Figure 2 The connecting structure 602 further comprises an electric control assembly 607, the electric control assembly 607 is used for controlling the first rotary motor 624 and the second rotary motor 625 to operate, thereby driving the first driving gear 621 and the second driving gear 622 to rotate.

[0069] In other alternative embodiments, the connecting structure 602 can be fixed relative to the support columns in the axial direction so that the support columns themselves support the connecting structure 602 so that the bottom of the connecting structure 602 is always at a distance from the bottom plate 662, i.e. above the bottom end of the support column in the support state, and the connecting structure 602 is arranged to be rotatable relative to the two support columns in the circumferential direction.

[0070] As an example, the shield support 600 includes two sleeves, each sleeve corresponding to a support column and axially fixed to it, thereby fixing the axial position of the sleeves. Furthermore, the sleeves are axially fixed to the connecting structure 602, thus fixing the axial position of the connecting structure 602. This ensures that the bottom end of the connecting structure 602 and the bottom end of the sleeve are always above the bottom end of the support column in its supported state, without affecting the stepping action.

[0071] Furthermore, in some alternative embodiments, the sleeve is fitted onto and connected to the support column, with both fixed to each other axially and circumferentially. A drive mechanism 613 is disposed inside the sleeve and has an independently operable first drive end and a second drive end. The first drive end is connected to the top support portion 611, and the second drive end is connected to the bottom support portion 612. For example, if a support plate is fixedly disposed inside the sleeve, the drive mechanism 613 includes two telescopic cylinders. One telescopic cylinder is located above the support plate, with its bottom connected to the support plate, and its telescopic top end (first drive end) connected to the top support portion 611. The other telescopic cylinder is located below the support plate, with its top connected to the support plate, and its telescopic end (second drive end) connected to the bottom support portion 612.

[0072] The connecting structure 602 is located on the outside of the sleeve. To ensure that the two are fixed to each other axially and can rotate relative to each other circumferentially, a bearing is fitted between them. Throughout the stepping process, the bottom end of the connecting structure 602 maintains a certain gap with the base plate 662, and the connecting structure 602 bears the weight of the support column in the retracted state when rotating.

[0073] In some alternative embodiments, the sleeve is fitted onto the support column, and a bearing is fitted between the sleeve and the support column. The sleeve is axially fixed to the support column but can rotate relative to it. The connecting structure 602 is located outside the sleeve and connected to it. Both are fixed to each other axially and circumferentially, and can also achieve stepping. During stepping, the connecting structure 602 drives the retracted support column to rotate around the supported support column. The sleeve and the corresponding support column rotate relative to each other under the action of the bearing. Furthermore, due to the axial supporting force, the bottoms of both the connecting structure 602 and the sleeve are at a certain distance from the base plate 662, which does not affect the rotation.

[0074] The following is based on Figures 1-4 Taking the shield bracket 600 shown as an example, according to Figures 5-8 Several specific embodiments of the protection method of the cover support 600 are described, and the rotation movement mode can be flexibly selected according to different working conditions.

[0075] Example 1:

[0076] like Figure 5 and Figure 6As shown, the shielding method of the shielding support 600 provided by the embodiment specifically includes the following steps:

[0077] Step 1: as shown, the shielding support 600 is placed between the top plate 661 and the bottom plate 662 of the stressed object, the driving mechanism 613 of the first support column 601a operates to elongate so that the first support column 601a is in a supporting state, the driving mechanism 613 of the second support column 601b operates to contract so that the second support column 601b is in a contracted state, the first support column 601a is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the second support column 601b are both spaced apart from the top plate 661 and the bottom plate 662 under the action of the cable 603 of the first support column 601a; Figure 5

[0078] Step 2: as shown, the first rotating motor 624 of the connecting structure 602 operates, the first driving gear 621 rotates around the first driven gear 617, the connecting structure 602 drives the second support column 601b to rotate counterclockwise around the first support column 601a by 180°; Figure 6

[0079] Step 3: the driving mechanism 613 of the second support column 601b operates to elongate so that the second support column 601b is in a supporting state, the driving mechanism 613 of the first support column 601a operates to contract so that the first support column 601a is in a contracted state, the second support column 601b is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the first support column 601a are both spaced apart from the top plate 661 and the bottom plate 662 under the action of the cable 603 of the second support column 601b;

[0080] Step 4: the second rotating motor 625 of the connecting structure 602 operates, the second driving gear 622 rotates around the second driven gear 618, the connecting structure drives the first support column 601a to rotate counterclockwise around the second support column 601b by 180°;

[0081] Step 5: repeat steps 1-4 to make the shielding support 600 step forward in the forward direction, thereby playing a shielding role.

[0082] Embodiment two:

[0083] As shown in Figure 5 and Figure 7 , the shielding method of the shielding support 600 provided by the embodiment specifically includes the following steps:

[0084] Step 1: as shown, Figure 5 ​​As shown, the shield support 600 is placed between the top plate 661 and the bottom plate 662 of the stressed object, the driving mechanism 613 of the first support column 601a operates to extend so that the first support column 601a is in a supporting state, the driving mechanism 613 of the second support column 601b operates to contract so that the second support column 601b is in a contracted state, and the first support column 601a is supported between the top plate 661 and the bottom plate 662. Under the action of the cable 603 of the first support column 601a, the connecting structure 602 and the second support column 601b are both spaced apart from the top plate 661 and the bottom plate 662;

[0085] Step 2: as shown in Figure 7 , the first rotary motor 624 of the connecting structure 602 operates, the first driving gear 621 rotates around the first driven gear 617, the connecting structure 602 drives the second support column 601b to rotate counterclockwise around the first support column 601a by 90°;

[0086] Step 3: the driving mechanism 613 of the second support column 601b operates to extend so that the second support column 601b is in a supporting state, the driving mechanism 613 of the first support column 601a operates to contract so that the first support column 601a is in a contracted state, and the second support column 601b is supported between the top plate 661 and the bottom plate 662. Under the action of the cable 603 of the second support column 601b, the connecting structure 602 and the first support column 601a are both spaced apart from the top plate 661 and the bottom plate 662;

[0087] Step 4: as shown in Figure 7 , the second rotary motor 625 of the connecting structure 602 operates, the second driving gear 622 rotates around the second driven gear 618, and the connecting structure drives the first support column 601a to rotate counterclockwise around the second support column 601b by 90°;

[0088] Step 5: repeat steps 1-4 to make the shield support 600 step in the forward direction continuously, thereby playing a shielding role.

[0089] Example Three

[0090] As shown in Figure 5 and Figure 8 , the shielding method of the shield support 600 provided in the embodiment specifically includes the following steps:

[0091] Step 1: as shown in Figure 5As shown, the shield support 600 is placed between the top plate 661 and the bottom plate 662 of the stressed object, the driving mechanism 613 of the first support column 601a operates to extend so that the first support column 601a is in a supporting state, the driving mechanism 613 of the second support column 601b operates to contract so that the second support column 601b is in a contracted state, the first support column 601a is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the second support column 601b are both spaced apart from the top plate 661 and the bottom plate 662 under the action of the cable 603 of the first support column 601a;

[0092] Step 2: as shown in Figure 8 , the first rotating motor 624 of the connecting structure 602 operates, the first driving gear 621 rotates around the first driven gear 617, the connecting structure 602 drives the second support column 601b to rotate counterclockwise around the first support column 601a by 45°;

[0093] Step 3: the driving mechanism 613 of the second support column 601b operates to extend so that the second support column 601b is in a supporting state, the driving mechanism 613 of the first support column 601a operates to contract so that the first support column 601a is in a contracted state, the second support column 601b is supported between the top plate 661 and the bottom plate 662, and the connecting structure 602 and the first support column 601a are both spaced apart from the top plate 661 and the bottom plate 662 under the action of the cable 603 of the second support column 601b;

[0094] Step 4: as shown in Figure 8 , the second rotating motor 625 of the connecting structure 602 operates, the second driving gear 622 rotates around the second driven gear 618, the connecting structure drives the first support column 601a to rotate counterclockwise around the second support column 601b by 90°;

[0095] Step 5: repeat steps 1-4 to make the shield support 600 step in the forward direction continuously, thereby playing a shielding role.

[0096] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0097] In addition, the terms "first", "second", etc. are used only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0098] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0099] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0100] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples, without contradiction.

[0101] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A cover support, characterized in that, include: The support column includes a first support column and a second support column arranged vertically. The support column includes a top support part, a bottom support part and a driving mechanism. The driving mechanism is connected between the top support part and the bottom support part to drive them to move closer or further apart along the axial direction. The support column has a supported state and a retracted state. The support column in the supported state plays a supporting role. A connecting structure is provided between the first support column and the second support column. The connecting structure is used to drive one of the columns in the retracted state to rotate around the other column in the supported state. During rotation, the connecting structure and the support column in the retracted state are located in the vertical direction between the top and bottom ends of the support column in the supported state. The protective support structure also includes: A sleeve assembly, wherein the sleeve assembly is fitted onto the support column in a corresponding manner and is fixed to the support column in the circumferential direction, the sleeve assembly is located between the top support part and the bottom support part, and the sleeve assembly and the connecting structure are fixed to each other in the axial direction and can be rotatably arranged relative to each other in the circumferential direction; The sleeve assembly and the support column are slidably disposed relative to each other in the axial direction. The shield support also includes several cables. The top of the cables is connected to the top support part, and the bottom of the cables is connected to the connecting structure or the sleeve assembly. When the support column is in the supported state, the cables are tensioned. Under the tension of the cables, the connecting structure is located at a certain distance above the bottom end of the support column in the supported state. The support column includes an inner cylinder and an outer cylinder sleeved on the inner cylinder. The inner cylinder and the outer cylinder are slidably disposed relative to each other along the axial direction. The driving mechanism is located inside the inner cylinder. The inner cylinder is connected to one of the bottom of the top support portion and the top of the bottom support portion. The outer cylinder is connected to the other of the bottom of the top support portion and the top of the bottom support portion. The sleeve assembly sleeves the outer cylinder and is slidably disposed relative to the outer cylinder along the axial direction.

2. The cover support according to claim 1, characterized in that, At least one bearing is fitted between the connecting structure and the sleeve assembly, the outer ring of the bearing is connected to the connecting structure, and the inner ring of the bearing is connected to the sleeve assembly.

3. The cover support according to claim 1, characterized in that, The sleeve assembly is provided with a limiting groove, and the outer cylinder is provided with a limiting protrusion; or, the outer cylinder is provided with a limiting groove, and the sleeve assembly is provided with a limiting protrusion. The limiting groove extends axially, and the limiting protrusion is fitted in the limiting groove and slidably disposed along the limiting groove.

4. The cover support according to claim 1, characterized in that, The device includes two sleeves, each corresponding to one of the two support columns, positioned vertically between the top and bottom ends of the support columns in a supported state. A driving mechanism is located inside the corresponding sleeve and has an independently operable first driving end and a second driving end. The first driving end is connected to the top support portion, and the second driving end is connected to the bottom support portion. The sleeve and the corresponding support column are fixed to each other in the circumferential and axial directions. The sleeve and the connecting structure are fixed to each other in the axial direction and can be rotatably arranged relative to each other in the circumferential direction. Alternatively, the sleeve and the corresponding support column are fixed to each other in the axial direction and can be rotated relative to each other in the circumferential direction, and the sleeve and the connecting structure are fixed to each other in the circumferential and axial directions.

5. The cover support according to any one of claims 1-4, characterized in that, The connection structure includes a first driving gear and a second driving gear. The first support column includes a first driven gear meshing with the first driving gear, and the second support column includes a second driven gear meshing with the second driving gear. The first driving gear is driven to rotate around the first driven gear to drive the second support column to rotate around the central axis of the first support column, and the second driving gear is driven to rotate around the second driven gear to drive the first support column to rotate around the central axis of the second support column.

6. The cover support according to claim 5, characterized in that, The connection structure includes a connection box, which is fitted with each of the first support column and the second support column. The top support portion and the bottom support portion extend from both ends of the connection box, and the first drive gear and the second drive gear are located inside the connection box. The connection structure also includes a first rotary motor and a second rotary motor located inside the connection housing. The first rotary motor is used to drive the first drive gear, and the second rotary motor is used to drive the second drive gear.

7. A method for providing cover for a cover support, characterized in that, The protective support is the protective support according to any one of claims 1-6, and the protective method includes the following steps: The protective support is placed between the top and bottom plates of the object under stress; The driving mechanism causes the first support column to be in a supported state and the second support column to be in a retracted state. The first support column is supported between the top plate and the bottom plate. The connecting structure and the second support column are both spaced apart from the top plate and the bottom plate. The connecting structure causes the second support column to rotate around the first support column by an angle α. The driving mechanism causes the second support column to be in a supported state and the first support column to be in a retracted state. The second support column is supported between the top plate and the bottom plate. The connecting structure and the first support column are both spaced apart from the top plate and the bottom plate. The connecting structure causes the first support column to rotate around the second support column by an angle β. Repeat the above steps to advance the protective support.

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