A support energy absorption structure

Abstract

This invention relates to the field of support and stabilization equipment, and in particular to a support energy-absorbing structure, comprising energy-absorbing rods spaced apart and support arms connected to the energy-absorbing rods. The projections of two adjacent support arms along the axial direction of the energy-absorbing rods are arranged to intersect, and the support arms form a support side on the same side of the energy-absorbing rods. When the energy-absorbing rods are compressed on the support sides of the two adjacent support arms, they generate opposite torques and undergo plastic deformation to provide a force to stop the support arms from moving in the direction of compression. When the energy-absorbing rods of this invention undergo plastic torsional deformation under the influence of a rotational torque, the ends of the support arms move towards the center with the torsion of the energy-absorbing rods to maintain follow-up support. This allows the energy-absorbing rods to adapt to the relatively large approach and movement of the top and bottom plates with a small deformation range, maintaining support and absorbing the pressure of the top and bottom plates during their movement, effectively solving the problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of support and maintenance equipment, and in particular to a support energy-absorbing structure. Background Technology

[0002] In some working conditions involving yielding support, the support equipment needs to provide stable and continuous support during the yielding process. Examples include roof support in mining tunnels and temporary roof support in goaf areas. This type of support often uses timber stacks. For instance, when the roof above a hydraulic support collapses, creating a dead face, timber stacks are required for support. In these situations, the roof and floor often have a certain allowable displacement. During this displacement, the support structure needs to continuously provide support to the roof. Using methods like timber stack support can easily lead to the timber stacks being crushed during compression. Summary of the Invention:

[0003] This invention provides a support structure for energy absorption. When the energy-absorbing rod undergoes plastic torsional deformation under a rotational torque, the end of the support arm moves towards the center along with the torsion of the energy-absorbing rod, maintaining dynamic support. Moreover, within a certain range of plastic deformation and torsion of the energy-absorbing rod, the end of the support arm can rotate relatively significantly around the energy-absorbing rod. This allows the energy-absorbing rod to adapt to relatively large movements of the top and bottom plates with small deformation amplitudes, maintaining support and absorbing the pressure of the top and bottom plates during their movement, effectively solving the problems existing in the prior art.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a support energy-absorbing structure, including energy-absorbing rods connected at intervals to support arms of the energy-absorbing rods. The projections of two adjacent support arms along the axial direction of the energy-absorbing rods are arranged to cross each other, and the support arms form support sides on the same side of the energy-absorbing rods. When the support sides of the two adjacent support arms are compressed, the energy-absorbing rods generate opposite torques and undergo plastic deformation to provide a force to stop the support arms from moving along the compression direction.

[0005] Furthermore, the two energy-absorbing rods are assembled into an energy-absorbing unit, wherein one of the energy-absorbing rods is configured as a core rod, and the other energy-absorbing rod is configured as a sleeve outside the core rod; the support arm at the end of the core rod and the support arm at the corresponding position of the sleeve are arranged to intersect in the projection of the core rod along the axial direction.

[0006] Furthermore, the energy-absorbing rod is configured as an energy-absorbing rod, and at least two energy-absorbing rod segments are spaced apart along its axial direction. The two ends of each energy-absorbing rod segment are respectively provided with the support arm, and the projections of the support arms at both ends of the energy-absorbing rod segment in the axial direction of the energy-absorbing rod are staggered.

[0007] Furthermore, the support arm is fixedly connected to the energy-absorbing rod.

[0008] Furthermore, the support arm has a fixing hole with a non-circular cross-section, and the energy-absorbing rod is inserted into the fixing hole.

[0009] Furthermore, a support plate is provided on one side of the energy-absorbing structure. The support plate is provided with a hinge seat and a sliding seat at intervals. The hinge seat and the sliding seat are respectively located on both sides of the projection of the energy-absorbing rod near the support plate. The end of the support arm near the support plate is hinged to the hinge seat at the corresponding position and slidably connected to the sliding seat at the corresponding position.

[0010] Furthermore, the support plate is provided with sliding seats on both sides of the hinge seat; the support plate forms support areas on both sides of the hinge seat, and the energy-absorbing rod and the support arm connected to the energy-absorbing rod are respectively provided in the two support areas.

[0011] Furthermore, the energy-absorbing structures are arranged at intervals along the axial direction of the energy-absorbing rod, wherein, at the support plate position on the same side, the sliding seats and hinge seats of two adjacent energy-absorbing structures are staggered.

[0012] Furthermore, multiple energy-absorbing rods are spaced apart along the compression direction. The energy-absorbing rods are divided into inner energy-absorbing rods and side energy-absorbing rods. The inner energy-absorbing rods are connected to the middle section of the support arm, and the side energy-absorbing rods are connected to the ends of the support arm.

[0013] Furthermore, at least two energy-absorbing structures are provided along the radial direction of the energy-absorbing rod. The support arms of two adjacent energy-absorbing structures are integrally connected when they are collinear in the extension direction, and are connected to one of the side energy-absorbing rods at the integral connection position.

[0014] The beneficial effect of this invention is that when the energy-absorbing rod undergoes plastic torsional deformation under the influence of a rotational torque, the end of the support arm moves towards the center as the energy-absorbing rod twists, maintaining follow-up support. Furthermore, within a certain range of plastic deformation and torsion of the energy-absorbing rod, the end of the support arm can rotate relatively significantly around the energy-absorbing rod. This allows the energy-absorbing rod to adapt to relatively large movements of the top and bottom plates with small deformation amplitudes, maintaining support and absorbing the pressure of the top and bottom plates during their movement, effectively solving the problems existing in the prior art. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of another embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure after the boundary in the embodiment shown;

[0019] Figure 5 This is a schematic diagram of another embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of another embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of another embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of another embodiment of the present invention;

[0023] Figure 9 This is a schematic diagram of a pressure test according to an embodiment of the present invention.

[0024] In the diagram, 1 is the support arm; 2 is the core rod; 3 is the sleeve; 4 is the energy-absorbing rod segment; 5 is the fixing hole; 6 is the support plate; 7 is the sliding seat; 8 is the hinge seat; 9 is the inner energy-absorbing rod; and 10 is the side energy-absorbing rod. Detailed Implementation

[0025] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0026] The embodiments of the present invention are as follows Figure 1-8 As shown, a support energy-absorbing structure includes energy-absorbing rods connected at intervals to support arms 1 of the energy-absorbing rods. The projections of two adjacent support arms 1 along the axial direction of the energy-absorbing rods are arranged to intersect, and the support arms 1 form a support side on the same side of the energy-absorbing rods. When the support ends of the two adjacent support arms 1 are compressed, they generate opposite torques and undergo plastic deformation to provide a force to stop the support arms 1 from moving in the compression direction.

[0027] The application of the energy-absorbing support structure of this invention in mine underground mining support will be described. The energy-absorbing support structure is installed in the area of ​​use, such that the top and bottom plates are supported by the support sides of the energy-absorbing structure. When the top and bottom plates generate a moving force that puts pressure on the support arms, as shown in the figure, two adjacent support arms 1 on the energy-absorbing rod generate opposite rotational torques on the energy-absorbing rod. When the energy-absorbing rod undergoes plastic torsional deformation under the rotational torque, the end of the support arm 1 moves towards the center as the energy-absorbing rod twists, thus maintaining follow-up support as the top and bottom plates move closer. Moreover, within a certain range of plastic deformation and torsion of the energy-absorbing rod, the end of the support arm 1 can rotate relatively significantly around the energy-absorbing rod, meaning that the energy-absorbing rod can adapt to the relatively large moving distance of the top and bottom plates with a small deformation amplitude, maintaining support and absorbing the pressure of the moving top and bottom plates during the movement process. When the top and bottom plates experience small-amplitude impact, the energy-absorbing structure of this application... Figure 9 As can be seen from the stress characteristics shown, under load pressures lower than those shown in the figure, the energy-absorbing structure of this application can support the top and bottom plates and absorb the pressure impacts of the top and bottom plates, thus achieving effective support.

[0028] In this application, energy-absorbing rods are used as the main components of the plastic deformation energy-absorbing support. When the support arm 1 is subjected to vertical force and the torque of the energy-absorbing rods is converted, it is less likely that the energy-absorbing rods will generate shear moments. Compared with existing rod support methods, which are prone to generating large shear moments when the rod axis deviates significantly from the pressure direction, affecting the support effect, this application is more stable. Moreover, the energy-absorbing structure of this application has at least two support ends on the same side of an energy-absorbing rod, and the support area of ​​the energy-absorbing structure is larger than that of a single column support, which can reduce the amount of support structure required.

[0029] In a preferred embodiment, one way to configure the energy-absorbing structure is as follows: Figure 3 and Figure 4 As shown, the two energy-absorbing rods are assembled into an energy-absorbing unit, one of which is set as a core rod 2, and the other is set as a sleeve 3 on the outside of the core rod 2; the support arm 1 at the end of the core rod 2 and the support arm 1 at the corresponding position of the sleeve 3 are arranged to intersect in the axial direction of the core rod 2.

[0030] like Figure 3 and Figure 4As shown, a single energy-absorbing unit forms two support arms 1 at each end of the energy-absorbing rod, resulting in four support ends on the same support side. This makes the force on the single energy-absorbing unit more balanced and stable during support. Two energy-absorbing rods, a sleeve 3 and a core rod 2, can also be provided in the energy-absorbing unit area for energy absorption support, which can improve the energy absorption support capacity at the location of a single energy-absorbing rod. Furthermore, the sleeve 3 and the core rod 2 are interlocked. In some embodiments, the sleeve 3 and the core rod 2 can contact each other to restrict bending deformation, thereby reducing the bending deformation of the core rod 2 or the sleeve 3 when subjected to bending force, and maintaining the stability of the energy absorption during torsional plastic deformation of the core rod 2 and the sleeve 3.

[0031] In another preferred embodiment of the energy-absorbing structure, one way to configure the supporting structure is as follows: Figure 7 and Figure 8 As shown, the energy-absorbing rod is configured as an energy-absorbing rod, and at least two energy-absorbing rod segments 4 are spaced apart along its axial direction. The two ends of the energy-absorbing rod segment 4 are respectively provided with the support arm 1, and the projections of the support arms 1 at both ends of the energy-absorbing rod segment 4 in the axial direction of the energy-absorbing rod are staggered.

[0032] like Figure 7 and Figure 8 As shown, a single energy-absorbing rod forms a segment 4 of torsional plastic deformation between two adjacent support arms 1. This allows the support ends of the support arms 1 on one side of the single energy-absorbing rod to be staggered on both sides of the energy-absorbing rod, resulting in a relatively balanced distribution of support points and stable support. At the same time, when multiple energy-absorbing rod segments 4 are simultaneously torsional under pressure on the energy-absorbing structure, there are at least three connecting force application points on the energy-absorbing rod. When the force direction of the support arm 1 changes, causing the force application points to generate bending moments on the energy-absorbing rod, the force application point in the middle and the force application points at both ends can generate opposite bending moment components, thereby balancing the bending moment of the energy-absorbing rod.

[0033] Regarding the preferred arrangement of the support arm 1 on the energy-absorbing rod section 4, such as... Figure 7 As shown, support arms 1 are spaced apart on the energy-absorbing rod, with adjacent support arms 1 staggered in the projection direction of the energy-absorbing rod axis. Alternatively, as... Figure 8 As shown, each energy-absorbing rod segment 4 has a support arm 1 at both ends, and the support arms 1 of adjacent energy-absorbing rod segments 4 are set independently.

[0034] For the connection between the energy-absorbing rod and the support arm 1, preferably, the support arm 1 is fixedly connected to the energy-absorbing rod. By fixing the support arm 1 to the energy-absorbing rod, the transmission of torque from the support arm 1 to the energy-absorbing rod is more stable, and the support arm 1 and the energy-absorbing rod are less prone to relative movement when the support arm 1 transmits force along the axial direction to the energy-absorbing rod. As a preferred method of fixed connection, such as... Figure 1As shown, the support arm 1 is welded and fixed to the energy-absorbing rod.

[0035] For the connection between the energy-absorbing rod and the support arm 1, as a preferred embodiment, it can also be as follows: Figure 2 As shown, the support arm 1 has a non-circular cross-section fixing hole 5, into which the energy-absorbing rod is inserted. This establishes a connection between the support arm 1 and the energy-absorbing rod, allowing force to be transmitted to the energy-absorbing rod when the support arm 1 is under pressure. In some embodiments, the energy-absorbing rod can be welded to the support arm 1 after it is inserted into the fixing hole 5.

[0036] exist Figure 2 In the illustrated embodiment, the energy-absorbing rod is configured as a polygonal energy-absorbing rod, and the fixing hole 5 is correspondingly configured as a polygon. This is not intended to limit the present invention; for example, in an alternative embodiment, the fixing hole 5 may also be configured as an ellipse.

[0037] In one embodiment of the energy-absorbing structure, to better support the top and bottom plates, preferably, a support plate 6 is provided on one side of the energy-absorbing structure. The support plate 6 is provided with hinge seats 8 and sliding seats 7 spaced apart. The hinge seats 8 and sliding seats 7 are located on opposite sides of the projection of the energy-absorbing rods near the support plate 6. The ends of the support arms 1 near the support plate 6 are hinged to the corresponding hinge seats 8 and slidably connected to the corresponding sliding seats 7. As shown in the figure, by providing sliding seats 7 and hinge seats 8 on the support plate 6, when the energy-absorbing structure is supported between the top and bottom plates, the pressure of the top and bottom plates can be transmitted through the support plate 6, thereby making the direction of force transmission at the end of the support arm 1 more stable. Moreover, during the process of the support plate 6 being pressed closer, the support arm 1 at the hinge position of the hinge seat 8 remains relatively stationary with respect to the support plate 6, while the end of the support arm 1 at the sliding seat 7 slides relative to the support plate 6 when the support plate 6 moves, maintaining support for the support plate 6.

[0038] like Figure 1-6 In the illustrated embodiment, the ends of the support arm 1 are connected to the hinged position and the sliding seat 7 respectively via connecting shafts. These connecting shafts are hinged to the hinged seat 8 and slidably connected to the sliding seat 7, as shown in the figure. The sliding seat 7 is provided with a groove for the connecting shaft to slide. In alternative embodiments, such as... Figure 7 and Figure 8 As shown, the support arm 1 has a connecting shaft at the end of the sliding seat 7, the sliding seat 7 has a T-shaped slider with a T-slot, the connecting shaft is hinged to the T-shaped slider and / or the support arm 1 is hinged to the connecting shaft.

[0039] In one embodiment of the energy-absorbing structure, a further improvement is that the support plate 6 is provided with sliding seats 7 on both sides of the hinge seat 8; the support plate 6 forms support areas on both sides of the hinge seat 8, and the energy-absorbing rod and the support arm 1 connected to the energy-absorbing rod are respectively provided in the two support areas. Figure 6 As shown, by setting sliding seats 7 on both sides of the hinge seat 8, when the support plate 6 is pressed, the end of the support arm 1 located at the sliding seat 7 moves synchronously away from the hinge seat 8, so that the supporting force of the end of the support arm 1 at the sliding seat 7 on both sides of the hinge seat 8 on the support plate 6 is symmetrical, so that the supporting force of the support plate 6 is balanced and stable.

[0040] In one embodiment of the supporting energy-absorbing structure, a further improvement and optimization is that the energy-absorbing structures are arranged at intervals along the axial direction of the energy-absorbing rod, wherein, at the position of the support plate 6 on the same side, the sliding seats 7 and hinge seats 8 of two adjacent energy-absorbing structures are staggered. Figure 5 As shown, this arrangement allows the sliding seats 7 and hinge seats 8 on the support plate 6 to be staggered when supporting the top and bottom plates, making the distribution of the supporting force on the support plate 6 more balanced when the support arm 1 moves on the sliding seat 7.

[0041] In one embodiment of the energy-absorbing support structure, a further improvement and optimization is that multiple energy-absorbing rods are spaced apart along the compression direction. These energy-absorbing rods are divided into inner energy-absorbing rods 9 and side energy-absorbing rods 10. The inner energy-absorbing rods 9 are connected to the middle section of the support arm 1, and the side energy-absorbing rods 10 are connected to the ends of the support arm 1. In the example shown, two inner energy-absorbing rods 9 are arranged from top to bottom, i.e., two layers of support arms 1. The lower end of the upper support arm 1 and the upper end of the lower support arm 1 are connected to the side energy-absorbing rods 10. This allows for torsional energy absorption through multiple levels of energy-absorbing rods, improving the load-bearing capacity of the energy-absorbing support structure. Furthermore, it reduces the length of a single support arm 1 when the support height is set, thus reducing the lever arm length of the support arm 1 and helping to reduce structural instability caused by bending deformation of the support arm 1.

[0042] In one embodiment of the supporting energy-absorbing structure, a further improvement and optimization is that at least two energy-absorbing structures are provided along the radial direction of the energy-absorbing rod, and the support arms 1 of two adjacent energy-absorbing structures are integrally connected when they are collinear in the extending direction, and are connected to one of the side energy-absorbing rods 10 at the integral connection position. Figure 6 As shown, two energy-absorbing structures are arranged side by side, and the two adjacent energy-absorbing structures share a side energy-absorbing rod 10, which can form an integral support structure, making the entire support structure more stable.

[0043] It should be noted that in the illustrated embodiment, a support plate 6 is provided to adapt to the top and bottom plate structure. This is not intended as a limitation of this application. In alternative embodiments, the energy-absorbing support structure may not be provided with a support plate 6, and the end of the support arm 1 may be directly abutted against the object to be supported. Alternatively, according to the structural characteristics of the object to be supported, a new structural design corresponding to the object may be provided, and a support block with a curved surface may be provided at the end of the support arm 1 to adapt to supporting curved objects.

[0044] The energy-absorbing support structure of the present invention will be exemplarily described according to one working condition. Specifically, the application of the support structure of this application in mine underground mining support will be described. It should be understood that this is not intended to limit the application conditions of the technical solution of this application. The energy-absorbing support structure of this application can also be applied in other technical fields, such as in the protection of the side walls of bridge piers, so as to provide continuous and stable support during the collision and approach process of the ship and the pier when a ship collides with the pier.

[0045] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0046] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A support energy absorbing structure, characterized by, The support arm is connected to the energy-absorbing rod member in intervals, the projections of two adjacent support arms along the axis of the energy-absorbing rod member are arranged to intersect, and the support arms form support sides at the same side of the energy-absorbing rod member; when the energy-absorbing rod member generates opposite torques respectively when the support sides of two adjacent support arms are pressed, the energy-absorbing rod member generates plastic deformation to provide force to stop the support arms from moving in the direction of the pressure; Two energy-absorbing rod members are combined to form an energy-absorbing unit, one of the energy-absorbing rod members is arranged as a core rod, and the other energy-absorbing rod member is arranged as a sleeve outside the core rod; the projections of the support arms at the end positions of the core rod and the support arms outside the sleeve along the axis of the core rod are arranged to intersect.

2. A support energy absorbing structure, characterized by: The support arm is connected to the energy-absorbing rod member in intervals, the projections of two adjacent support arms along the axis of the energy-absorbing rod member are arranged to intersect, and the support arms form support sides at the same side of the energy-absorbing rod member; when the energy-absorbing rod member generates opposite torques respectively when the support sides of two adjacent support arms are pressed, the energy-absorbing rod member generates plastic deformation to provide force to stop the support arms from moving in the direction of the pressure; The energy-absorbing rod member is arranged as an energy-absorbing rod, at least two energy-absorbing rod segments are arranged in intervals along the axis of the energy-absorbing rod, the two ends of the energy-absorbing rod segment are respectively provided with the support arms, and the projections of the support arms at the two ends of the energy-absorbing rod segment along the axis of the energy-absorbing rod are arranged to intersect.

3. A support energy absorbing structure, characterized by: The support arm is connected to the energy-absorbing rod member in intervals, the projections of two adjacent support arms along the axis of the energy-absorbing rod member are arranged to intersect, and the support arms form support sides at the same side of the energy-absorbing rod member; when the energy-absorbing rod member generates opposite torques respectively when the support sides of two adjacent support arms are pressed, the energy-absorbing rod member generates plastic deformation to provide force to stop the support arms from moving in the direction of the pressure; One side of the support energy-absorbing structure is provided with a support plate, the support plate is provided with a hinge seat and a sliding seat in intervals, the hinge seat and the sliding seat are respectively located on the two sides of the projection of the energy-absorbing rod member on the support plate close to the support plate, and the end part of the support arm close to the support plate is respectively hinged to the hinge seat at the corresponding position and is slidingly connected to the sliding seat at the corresponding position.

4. A support energy absorbing structure according to claim 3, wherein: The support plate is respectively provided with the sliding seat on the two sides of the hinge seat; The support plate forms a support area on the two sides of the hinge seat, and the energy-absorbing rod member and the support arm connected to the energy-absorbing rod member are respectively arranged in the two support areas.

5. A support energy absorbing structural assembly, characterized by: The support energy-absorbing structure includes an energy-absorbing rod member and a support arm connected to the energy-absorbing rod member in intervals, the projections of two adjacent support arms along the axis of the energy-absorbing rod member are arranged to intersect, and the support arms form support sides at the same side of the energy-absorbing rod member; when the energy-absorbing rod member generates opposite torques respectively when the support sides of two adjacent support arms are pressed, the energy-absorbing rod member generates plastic deformation to provide force to stop the support arms from moving in the direction of the pressure; The side of the support energy-absorbing structure is provided with a support plate, the support plate is provided with a hinge seat and a sliding seat at intervals, the hinge seat and the sliding seat are respectively located on the projection of the energy-absorbing rod near the support plate on both sides, and the support arm end near the support plate is respectively hinged with the hinge seat at the corresponding position and slidingly connected with the sliding seat at the corresponding position; Wherein, the sliding seat and the hinge seat of the two adjacent energy-absorbing structures are staggered at the position of the support plate on the same side.

6. A support energy absorbing structure, characterized by: The energy-absorbing rod, the support arm connected to the energy-absorbing rod at intervals, the projections of two adjacent support arms along the axis direction of the energy-absorbing rod are arranged in cross, and the support arms form a support side at the same side of the energy-absorbing rod, the energy-absorbing rod generates plastic deformation when the support arms at the support side of the two adjacent support arms generate opposite moments respectively under pressure, so as to provide the force to stop the movement of the support arm in the direction of pressure; The energy-absorbing rod is arranged at intervals in the direction of pressure, the energy-absorbing rod is divided into an inner energy-absorbing rod and an edge energy-absorbing rod, the inner energy-absorbing rod is connected to the middle segment of the support arm, and the edge energy-absorbing rod is connected to the end of the support arm.

7. A support energy absorbing structure according to claim 6, wherein: The energy-absorbing structure is provided with at least two along the radial direction of the energy-absorbing rod, the support arms of two adjacent energy-absorbing structures are integrally connected when they are collinear in the extension direction, and are connected to one edge energy-absorbing rod at the position of integral connection.

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