An adjustable roadway support device that is easy to extend

Abstract

The utility model relates to roadway support technical field especially is adjustable roadway support device convenient to extend, including frame, be provided with support structure on the frame and be used to support roadway, and support structure includes: main component, set up on the frame and be used to form the support surface to roadway, support component, including the column fixed in the four corners of frame bottom, the outer wall of one end of column is fixed with the shaft seat, the outer wall upper end of shaft seat is hinged with upper support frame, the outer wall lower end of shaft seat is hinged with lower support frame, the outer end of upper support frame is hinged with support leg, and the lower end of support leg is fixed with support foot, the outer wall lower end of shaft seat is hinged with the fourth hydraulic cylinder, and the fourth hydraulic cylinder output end is hinged with support leg upper end, through the support mechanism of retraction and extension cooperation with walking mechanism, realize quick movement and steady support, through the roof and side plate driven by multiple hydraulic cylinders closely adhere to the roadway contour, can adapt to complex roadway condition, improve support efficiency and security.

Description

Technical Field

[0001] This utility model relates to the field of tunnel support technology, specifically an adjustable tunnel support device that is easy to extend. Background Technology

[0002] In mining and tunnel construction, roadway support is a crucial element in ensuring the safe and smooth operation of underground work. With the continuous development of mining and tunneling technologies, higher demands are being placed on the flexibility, adaptability, and efficiency of support equipment.

[0003] According to CN112855231B, a support device for underground coal mine roadways is disclosed. This technology discloses a technical solution including "a support mechanism, with a protective mechanism at the top of the support mechanism; the protective mechanism includes several top beams, with bladders connected between the top beams, forming an arched area between the bladders, a support plate on the inner side of the arched area, the support plate and the bladders being set according to the shape, the support plate and the bladders being in contact and connected, an anchor mesh on the outer side of the arched area, the anchor mesh covering the outer side of the bladders; several grouting holes are opened circumferentially on the support plate, the grouting holes sequentially penetrating the bladders and the anchor mesh, and grouting components are detachably connected inside the grouting holes." This technology has the technical effects of "improving the support performance of underground coal mine roadways, while avoiding the impact of seasonal changes on the support device caused by the surrounding rock, and ensuring the personal safety of workers."

[0004] In existing roadway support operations, due to the generally unevenness of the roadway floor, the support components of traditional support devices often only have local point or line contact with the floor. This insufficient contact results in a limited support area, and when subjected to pressure transmitted from the overhead rock strata, the pressure at the support point is significantly concentrated, which can easily cause the support components to sink into the floor or slip. Furthermore, due to the uneven distribution of support force on the contact surface, the overall stability of the device decreases, and there is a risk of overturning when subjected to eccentric loads or lateral disturbances, which directly affects the safety and reliability of the support. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an easily extendable adjustable roadway support device. Through the cooperation of a retractable support mechanism and a traveling mechanism, it achieves rapid movement and stable support. The top plate and side plates, driven by multiple sets of hydraulic cylinders, closely fit the roadway contour, which can adapt to complex roadway conditions and improve support efficiency and safety.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable roadway support device that is easy to extend, comprising a frame, wherein a support structure is provided on the frame for supporting the roadway, and the support structure includes:

[0007] The main components are set on the frame and used to form the support surface for the tunnel;

[0008] The support assembly includes columns fixed at the four corners of the bottom of the frame. A bearing is fixed to the outer wall of one end of the column. An upper support is pivotally connected to the upper end of the outer wall of the bearing. A lower support is pivotally connected to the lower end of the outer wall of the bearing. A support leg is pivotally connected to the outer end of the upper support. A support foot is fixed to the lower end of the support leg. A fourth hydraulic cylinder is pivotally connected to the lower end of the outer wall of the bearing, and the output end of the fourth hydraulic cylinder is pivotally connected to the upper end of the support leg.

[0009] Preferably, the support assembly further includes a lifting leg that is slidably installed inside the lower end of the column, and a fifth hydraulic cylinder is installed at both ends of the outer wall of the column, with the output end of the fifth hydraulic cylinder connected to the lifting leg.

[0010] Preferably, the support assembly further includes a walking mechanism installed at the lower end of the lifting leg and used to move in conjunction with the track laid on the ground.

[0011] Preferably, the outer end of the lower support frame is pivotally connected to the support leg, and the upper support frame is arranged in parallel with the lower support frame.

[0012] Preferably, the main component includes several connecting frames arranged front and back inside the frame, support frames are fixed at both ends of the top of the frame, a top plate is provided directly above the connecting frames and fixed between the tops of the support frames at both ends, and side plates are pivotally connected to both ends of the top plate.

[0013] Preferably, the main body component further includes a first hydraulic cylinder pivotally connected to the inner walls of both ends of the top plate, and the output end of the first hydraulic cylinder is pivotally connected to the inner wall of the side plate; a second hydraulic cylinder is pivotally connected to the bottom of the connecting frame, and the output end of the second hydraulic cylinder is pivotally connected to the inner wall of the side plate; a third hydraulic cylinder is fixed to the outer wall of the connecting frame, and the output end of the third hydraulic cylinder is pivotally connected to the inner wall of the side plate.

[0014] Beneficial effects

[0015] This invention provides an adjustable roadway support device that is easy to extend. Compared with the prior art, it has the following advantages:

[0016] 1. The output end of the fourth hydraulic cylinder drives the support leg to swing around its connection point with the upper support frame, thereby causing the lower support foot to extend outward and downward or retract inward and upward. During the support phase, the powerful thrust provided by the fourth hydraulic cylinder is converted into a huge downward pressure and lateral support force on the support foot through the linkage mechanism, enabling the device to closely adapt to the uneven roadway floor and form a stable support base, effectively preventing the device from overturning or sinking. During the movement or transfer phase, the mechanism can efficiently retract the support foot, reducing the space occupied by the device and improving mobility.

[0017] 2. The first hydraulic cylinder provides the initial unfolding torque to the upper part of the side plate, controlling its relative angle with the roof. The second and third hydraulic cylinders provide the main unfolding thrust and support stiffness from the lower middle and outer sides of the side plate, respectively. Together, they form a stable multi-angle force application system, ensuring that the side plate can closely fit the roadway sidewalls with different inclination angles and contours. Through the coordinated action of multiple sets of hydraulic cylinders, not only is the side plate support angle flexibly adjustable, allowing it to adapt to diverse roadway cross-sectional shapes, but this structure can also continuously and evenly transmit powerful hydraulic thrust to the roadway sidewalls, forming an active support force for the surrounding rock, effectively suppressing sidewall deformation and slippage, thus forming an adaptive closed support with the roof, improving the stability and safety of the roadway support. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the main components in this utility model;

[0020] Figure 3 This is a partial structural diagram of the main components of this utility model;

[0021] Figure 4 This is a schematic diagram of the support component in this utility model.

[0022] In the diagram: 1. Frame; 2. Support structure; 21. Main component; 211. Support frame; 212. Top plate; 213. Side plate; 214. First hydraulic cylinder; 215. Connecting frame; 216. Second hydraulic cylinder; 217. Third hydraulic cylinder; 22. Support component; 221. Column; 222. Shaft seat; 223. Upper support frame; 224. Lower support frame; 225. Support leg; 226. Support foot; 227. Fourth hydraulic cylinder; 228. Lifting leg; 229. Traveling mechanism; 2210. Fifth hydraulic cylinder. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: an adjustable roadway support device that is easy to extend, including a frame 1, on which a support structure 2 is provided for supporting the roadway, the support structure 2 including:

[0025] The main component 21 is mounted on the frame 1 and is used to form a support surface for the roadway;

[0026] The support assembly 22 includes columns 221 fixed at the four corners of the bottom of the frame 1. A bearing seat 222 is fixed to the outer wall of one end of the column 221. An upper support frame 223 is pivotally connected to the upper end of the outer wall of the bearing seat 222. A lower support frame 224 is pivotally connected to the lower end of the outer wall of the bearing seat 222. A support leg 225 is pivotally connected to the outer end of the upper support frame 223. A support foot 226 is fixed to the lower end of the support leg 225. A fourth hydraulic cylinder 227 is pivotally connected to the lower end of the outer wall of the bearing seat 222, and the output end of the fourth hydraulic cylinder 227 is pivotally connected to the upper end of the support leg 225.

[0027] In this embodiment, the output end of the fourth hydraulic cylinder 227 drives the support leg 225 to swing around its connection point with the upper support frame 223, thereby causing the lower support foot 226 to extend outward and downward or retract inward and upward. During the support phase, the powerful thrust provided by the fourth hydraulic cylinder 227 is converted into a huge downward pressure and lateral support force on the support foot 226 through the linkage mechanism, enabling the device to closely adapt to the uneven roadway floor and form a stable support base, effectively preventing the device from overturning or sinking. During the movement or transfer phase, the mechanism can efficiently retract the support foot 226, reducing the space occupied by the device and improving mobility.

[0028] Specifically, the support assembly 22 also includes a lifting leg 228 that is slidably installed inside the lower end of the column 221. A fifth hydraulic cylinder 2210 is installed at both ends of the outer wall of the column 221, and the output end of the fifth hydraulic cylinder 2210 is connected to the lifting leg 228.

[0029] In this embodiment, the fifth hydraulic cylinder 2210, which is symmetrically installed on the outer wall of the column 221, has its output end directly connected to the lifting leg 228. Through the synchronous extension and retraction of the hydraulic cylinder, the lifting leg 228 can be precisely driven to vertically lift and lower relative to the column 221. This realizes the stepless adjustment of the overall working height of the support device, enabling it to flexibly adapt to the support needs of different roadway heights and improving the versatility of the device.

[0030] Specifically, the support assembly 22 also includes a walking mechanism 229 installed at the lower end of the lifting leg 228 and used to move in conjunction with the track laid on the ground.

[0031] In this embodiment, the walking mechanism 229 transmits power directly to the wheel axle through the built-in motor and the torque amplification of the reducer, driving the wheel to roll on the preset track, thereby generating traction to move the entire support device.

[0032] Specifically, the outer end of the lower support 224 is pivotally connected to the support leg 225, and the upper support 223 is arranged in parallel with the lower support 224.

[0033] In this embodiment, when the fourth hydraulic cylinder 227 extends or retracts, it drives the support leg 225 to move. Since the upper support 223 and the lower support 224 are of equal length and parallel, according to the motion characteristics of the parallelogram mechanism, the support leg 225 will always maintain a vertical posture during the entire unfolding or retracting process, and will not tilt forward or backward.

[0034] Specifically, the main component 21 includes several connecting frames 215 fixed inside the frame 1 and arranged in front and behind. Support frames 211 are fixed at both the left and right ends of the top of the frame 1. A top plate 212 is provided directly above the connecting frame 215 and fixed between the tops of the support frames 211 at both ends. Side plates 213 are pivotally connected to both the left and right ends of the top plate 212.

[0035] Specifically, the main component 21 also includes a first hydraulic cylinder 214 pivotally connected to the inner walls of both ends of the top plate 212, and the output end of the first hydraulic cylinder 214 is pivotally connected to the inner wall of the side plate 213. A second hydraulic cylinder 216 is pivotally connected to the bottom of the connecting frame 215, and the output end of the second hydraulic cylinder 216 is pivotally connected to the inner wall of the side plate 213. A third hydraulic cylinder 217 is fixed to the outer wall of the connecting frame 215, and the output end of the third hydraulic cylinder 217 is pivotally connected to the inner wall of the side plate 213.

[0036] In this embodiment, the first hydraulic cylinder 214 provides the initial deployment torque to the upper part of the side plate 213, controlling its relative angle with the roof plate 212; the second hydraulic cylinder 216 and the third hydraulic cylinder 217 provide the main deployment thrust and support stiffness from the lower middle and outer sides of the side plate 213, respectively. Together, they form a stable multi-angle force application system, ensuring that the side plate 213 can closely fit the roadway sidewalls with different inclination angles and contours. Through the coordinated action of multiple sets of hydraulic cylinders, not only is the support angle of the side plate 213 flexibly adjusted, enabling it to adapt to diverse roadway cross-sectional shapes, but this structure can also continuously and evenly transmit powerful hydraulic thrust to the roadway sidewalls, forming an active support force for the surrounding rock, effectively suppressing sidewall deformation and slippage, thereby forming an adaptive closed support together with the roof plate 212, improving the stability and safety of the roadway support.

[0037] The working principle and usage process of this utility model: When the device enters the predetermined support position in the roadway, the fourth hydraulic cylinder 227 of the support component 22 is activated first, driving the parallelogram linkage mechanism composed of the upper support frame 223, the lower support frame 224 and the support leg 225 to unfold, so that the support foot 226 presses the floor outward and downward to form a rigid base to prevent overturning.

[0038] Then, the fifth hydraulic cylinder 2210 actuates, driving the lifting leg 228 to descend vertically within the column 221 until its lower traveling mechanism 229 is off the ground, lifting the entire device and stabilizing it at the predetermined support height, completing the initial positioning and support. Immediately afterwards, the support mechanism of the main operating component 21 is activated: the top plate 212 is tightly attached to the top plate under the support of the support frame 211 and the connecting frame 215. At the same time, the first hydraulic cylinder 214, the second hydraulic cylinder 216, and the third hydraulic cylinder 217 work together to push the side plate 213 from multiple angles from the top, middle, and outside, respectively, so that it closely fits the contour of the roadway sidewall, forming active and fully enclosed support for the top plate and sidewall.

[0039] When movement is required, all hydraulic cylinders are retracted, causing the top plate 212 and side plate 213 to detach from the surrounding rock, and the support legs 226 are retracted; then, through the built-in motor of the walking mechanism 229, the drive device moves along the ground track to the next work station.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easily extendable adjustable roadway support device, comprising a frame (1), characterized in that: The frame (1) is provided with a support structure (2) for supporting the roadway. The support structure (2) includes: The main component (21) is set on the frame (1) and is used to form a support surface for the roadway; The support assembly (22) includes columns (221) fixed at the four corners of the bottom of the frame (1). A bearing seat (222) is fixed on the outer wall of one end of the column (221). An upper support frame (223) is pivotally connected to the upper end of the outer wall of the bearing seat (222). A lower support frame (224) is pivotally connected to the lower end of the outer wall of the bearing seat (222). A support leg (225) is pivotally connected to the outer end of the upper support frame (223). A support foot (226) is fixed to the lower end of the support leg (225). A fourth hydraulic cylinder (227) is pivotally connected to the lower end of the outer wall of the bearing seat (222). The output end of the fourth hydraulic cylinder (227) is pivotally connected to the upper end of the support leg (225).

2. The easily extendable adjustable roadway support device according to claim 1, characterized in that: The support assembly (22) also includes a lifting leg (228) that is slidably installed inside the lower end of the column (221). A fifth hydraulic cylinder (2210) is installed at both ends of the outer wall of the column (221), and the output end of the fifth hydraulic cylinder (2210) is connected to the lifting leg (228).

3. The easily extendable adjustable roadway support device according to claim 2, characterized in that: The support assembly (22) also includes a walking mechanism (229) installed at the lower end of the lifting leg (228) and used to move in conjunction with the track laid on the ground.

4. The easily extendable adjustable roadway support device according to claim 1, characterized in that: The outer end of the lower support (224) is pivotally connected to the support leg (225), and the upper support (223) is arranged in parallel with the lower support (224).

5. The easily extendable adjustable roadway support device according to claim 1, characterized in that: The main component (21) includes several connecting frames (215) arranged in front and behind inside the frame (1). Support frames (211) are fixed at both ends of the top of the frame (1). A top plate (212) is set directly above the connecting frame (215) and fixed between the tops of the support frames (211) at both ends. Side plates (213) are pivotally connected to both ends of the top plate (212).

6. The easily extendable adjustable roadway support device according to claim 5, characterized in that: The main component (21) further includes a first hydraulic cylinder (214) pivotally connected to the inner walls of both ends of the top plate (212), and the output end of the first hydraulic cylinder (214) is pivotally connected to the inner wall of the side plate (213). A second hydraulic cylinder (216) is pivotally connected to the bottom of the connecting frame (215), and the output end of the second hydraulic cylinder (216) is pivotally connected to the inner wall of the side plate (213). A third hydraulic cylinder (217) is fixed to the outer wall of the connecting frame (215), and the output end of the third hydraulic cylinder (217) is pivotally connected to the inner wall of the side plate (213).

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