Broken surrounding rock supporting device

Abstract

The utility model relates to a broken surrounding rock supporting device which comprises a base and a supporting plate arranged above the base, and a height adjusting mechanism and two supporting mechanisms are arranged between the base and the supporting plate. The height adjusting mechanism is located in the middle of the base and the middle of the supporting plate and used for adjusting the distance between the supporting plate and the base. The two supporting mechanisms are symmetrically arranged on the left side and the right side of the height adjusting mechanism, the upper ends and the lower ends of the supporting mechanisms are rotationally connected with the lower portion of the supporting plate and the upper portion of the base correspondingly, and the supporting mechanisms are telescopic. A triangular supporting structure is formed among the supporting mechanism, the height adjusting mechanism, the supporting plate and the base. The height adjusting mechanism is used for adjusting the distance between the supporting plate and the base, the height of the supporting plate can be adjusted for supporting according to the actual situation of a roadway, the supporting effect is good, and adaptability is high; the supporting mechanism is arranged to share force borne by the supporting plate during supporting, and device damage caused by the fact that only the height adjusting mechanism is stressed is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel support technology, and in particular relates to a support device for fractured surrounding rock. Background Technology

[0002] In the process of coal mining, goaf remining is one of the important ways to improve the coal resource recovery rate. Goaf is a "cavity" created below the surface by human excavation or natural geological movement. Goaf mining requires support devices to support the roadway to prevent broken surrounding rock from falling and threatening the safety of personnel and machinery.

[0003] Patent application CN220059595U discloses a support device for tunneling in broken surrounding rock in a goaf. By rotating a threaded seat connected to a screw thread, the upper movable sleeve moves, adjusting the height of the support seat to support the tunnel. However, this structure has the following drawbacks: First, because it uses a screw thread structure to adjust the height of the support seat, it can only effectively support the tunnel when the support seat is at the top of the screw thread. Second, during support, the force on the support seat is concentrated at the threaded seat and the screw thread connected to it, leading to stress concentration and making the device prone to fatigue damage. Utility Model Content

[0004] The purpose of this utility model is to provide a support device for fractured surrounding rock to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A support device for fractured surrounding rock includes: a base and a support plate disposed above the base, wherein a height adjustment mechanism and two support mechanisms are provided between the base and the support plate;

[0007] The height adjustment mechanism is located in the middle of the base and the support plate, and is used to adjust the distance between the support plate and the base; two support mechanisms are symmetrically arranged on the left and right sides of the height adjustment mechanism, with their upper and lower ends rotatably connected to the lower part of the support plate and the upper part of the base, respectively, and the support mechanisms are telescopic.

[0008] The support mechanism, the height adjustment mechanism, the support plate, and the base form a triangular support structure.

[0009] As a further improvement of this utility model, the height adjustment mechanism includes a cylinder, which is located in the cavity inside the base, and its output axis passes through the base and connects to the lower part of the support plate.

[0010] As a further improvement of this utility model, the upper part of the base and the lower part of the support plate are respectively provided with two sets of first ear plates and two sets of second ear plates. Each set of first ear plates and second ear plates is rotatably connected to the lower end and upper end of the support mechanism respectively by a pin. The pin extends horizontally back and forth.

[0011] As a further improvement of this utility model, each group of first ear plates includes two first ear plates, and each group of second ear plates includes two second ear plates; the support mechanism is provided between the two first ear plates and the two second ear plates.

[0012] As a further improvement of this utility model, the support mechanism includes a sleeve, a support rod, and a fixing component; the lower end of the sleeve is rotatably connected to the upper part of the base, and the upper part is slidably connected to the support rod; the upper end of the support rod is rotatably connected to the lower part of the support plate; the fixing component is connected to the sleeve and the support rod and is used to fix the relative position of the sleeve and the support rod.

[0013] As a further improvement of this utility model, the fixing component includes at least one screw hole provided on the upper part of the sleeve side wall, and a set screw passing through the screw hole and pressing against the support rod.

[0014] As a further improvement of this utility model, the support rod is provided with a groove extending along its axial direction, the width of the groove being equal to the diameter of the screw hole; the groove abuts against the set screw.

[0015] As a further improvement of this utility model, the bottom of the support rod is provided with an expansion rod, the diameter of which is larger than the diameter of the support rod; the upper part of the sleeve is provided with an annular baffle, the inner diameter of which is equal to the diameter of the support rod.

[0016] As a further improvement of this utility model, both the left and right ends of the support plate extend downward and away from the center to form an inclined surface.

[0017] The beneficial effects of adopting the above technical solution are as follows:

[0018] This utility model is equipped with a height adjustment mechanism to adjust the distance between the support plate and the base. The height can be adjusted according to the actual conditions of the roadway for support, adapting to different roadways, with good support effect and strong adaptability. A support mechanism is set up to share the force on the support plate during support, avoiding damage to the device caused by only the height adjustment mechanism bearing the force. The support mechanism is rotatably connected to the support plate and the base and is telescopic, which can change with the height between the support plate and the base. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle;

[0021] Figure 3 This is a cross-sectional view of the support mechanism of this utility model;

[0022] The markings in the diagram are as follows: 1. Base, 2. Support plate, 3. Height adjustment mechanism, 4. Support mechanism, 4-1. Sleeve, 4-2. Support rod, 4-3. Screw hole, 4-4. Groove, 4-5. Expansion rod, 4-6. Baffle, 5. First ear plate, 6. Second ear plate, 7. Pin, 8. Gas sensor, 9. Control panel. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, a clear and complete description of this utility model will be provided below in conjunction with the accompanying drawings.

[0024] like Figures 1-3 The illustrated rock support device includes a base 1 and a support plate 2 disposed above the base 1. A height adjustment mechanism 3 and two support mechanisms 4 are provided between the base 1 and the support plate 2. The support plate 2 is used to support the roadway. The height adjustment mechanism 3 is used to adjust the distance between the support plate 2 and the base 1 to adapt to different roadways. The support mechanisms 4 share the force received by the support plate 2 during support, preventing damage to the device caused by only the height adjustment mechanism 3 bearing the force. In this embodiment, both ends of the support plate 2 extend downwards and away from its center, forming an inclined surface. Rock fragments falling onto the support plate 2 in the roadway fall to the ground along the inclined surface.

[0025] The height adjustment mechanism 3 is located in the middle of the base 1 and the support plate 2. Specifically, the height adjustment mechanism 3 includes a cylinder, which is located in the cavity inside the base 1 and is mounted via a cylinder seat. The output shaft of the cylinder passes upward through the base 1 and connects to the lower part of the support plate 2. The output shaft of the cylinder is welded to the support plate 2 or fixedly connected by bolts. The support plate 2 can be adjusted in height according to the actual conditions of the roadway for support, providing good support effect and strong adaptability.

[0026] Two support mechanisms 4 are symmetrically arranged on the left and right sides of the height adjustment mechanism 3, forming a triangular support structure between the support mechanism 4, the height adjustment mechanism 3, the support plate 2, and the base 1, resulting in more stable support. The upper and lower ends of the support mechanism 4 are rotatably connected to the lower part of the support plate 2 and the upper part of the base 1, respectively, and the support mechanism 4 is telescopic; the support mechanism 4 changes angle and length as the height between the support plate 2 and the base 1 changes.

[0027] In this embodiment, the upper part of the base 1 and the lower part of the support plate 2 are respectively provided with two sets of first ear plates 5 and two sets of second ear plates 6. Each set of first ear plates 5 includes two first ear plates 5, and each set of second ear plates 6 includes two second ear plates 6. The ear plates are welded to the base 1 or the support plate 2, and each ear plate has a through hole in the middle. Each set of first ear plates 5 and second ear plates 6 is rotatably connected to the lower end and upper end of a support mechanism 4 respectively via a pin 7, which extends horizontally back and forth. Specifically, the support mechanism 4 is provided between the two first ear plates 5 and the two second ear plates 6.

[0028] In this embodiment, the support mechanism 4 includes a sleeve 4-1, a support rod 4-2, and a fixing assembly. The lower end of the sleeve 4-1 is rotatably connected to the upper part of the base 1, that is, the lower end of the sleeve 4-1 is rotatably connected to the first ear plate 5 via a pin 7, and the upper part is slidably connected to the support rod 4-2. The upper end of the support rod 4-2 is rotatably connected to the lower part of the support plate 2, that is, the upper end of the support rod 4-2 is rotatably connected to the second ear plate 6 via a pin 7. Further, the bottom of the support rod 4-2 is provided with an expansion rod 4-5, the diameter of which is larger than the diameter of the support rod 4-2. The upper part of the sleeve 4-1 is provided with an annular baffle 4-6, the inner diameter of which is equal to the diameter of the support rod 4-2. The expansion rod 4-5 and the baffle 4-6 cooperate to limit the maximum extension and retraction of the support mechanism 4. When the extension and retraction is at its maximum, the top of the expansion rod 4-5 contacts the bottom of the baffle 4-6.

[0029] The fixing component is connected to the sleeve 4-1 and the support rod 4-2 to fix the relative positions of the sleeve 4-1 and the support rod 4-2. Further, the fixing component includes at least one screw hole 4-3 located on the upper part of the side wall of the sleeve 4-1, and a set screw (not shown in the figure) passing through the screw hole 4-3 and engaging with the support rod 4-2. In this embodiment, two screw holes 4-3 and a set screw are provided. To prevent the support rod 4-2 from sliding relative to each other circumferentially during the engagement of the set screw and the support rod 4-2, the support rod 4-2 is provided with a groove 4-4 extending axially. The width of the groove 4-4 is equal to the diameter of the screw hole 4-3, that is, the width of the groove 4-4 is equal to the diameter of the set screw. The groove 4-4 abuts against the set screw, thereby fixing the support rod 4-2 and the sleeve 4-1 relatively.

[0030] Furthermore, to facilitate control of the cylinder's extension and retraction, the base 1 is equipped with a control panel 9 electrically connected to the controller. The controller is electrically connected to the cylinder, and operating the control panel 9 controls the extension and retraction of the cylinder, thereby controlling the raising and lowering of the support plate 2. The base 1 is also equipped with a gas sensor 8 to detect the gas concentration in the tunnel, ensuring personnel safety.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A broken ground support device, characterized by: It includes: A base (1) and a support plate (2) disposed above the base (1), wherein a height adjustment mechanism (3) and two support mechanisms (4) are provided between the base (1) and the support plate (2); The height adjustment mechanism (3) is located in the middle of the base (1) and the support plate (2) and is used to adjust the distance between the support plate (2) and the base (1); the two support mechanisms (4) are symmetrically arranged on the left and right sides of the height adjustment mechanism (3), and the upper and lower ends are rotatably connected to the lower part of the support plate (2) and the upper part of the base (1) respectively, and the support mechanism (4) is telescopic; A triangular support structure is formed between the support mechanism (4), the height adjustment mechanism (3), the support plate (2), and the base (1).

2. A broken ground support device according to claim 1, characterised in that: The height adjustment mechanism (3) includes a cylinder located in the cavity inside the base (1), and its output axis passes through the base (1) and connects to the lower part of the support plate (2).

3. A broken ground support device according to claim 1, characterised in that: The upper part of the base (1) and the lower part of the support plate (2) are respectively provided with two sets of first ear plates (5) and two sets of second ear plates (6). Each set of first ear plates (5) and second ear plates (6) is rotatably connected to the lower end and upper end of a support mechanism (4) through a pin (7); the pin (7) extends horizontally back and forth.

4. A broken ground support device according to claim 3, characterised in that: Each set of first ear plates (5) includes two first ear plates (5), and each set of second ear plates (6) includes two second ear plates (6); the support mechanism (4) is provided between the two first ear plates (5) and the two second ear plates (6).

5. A broken ground support device according to claim 1, characterised in that: The support mechanism (4) includes a sleeve (4-1), a support rod (4-2), and a fixing component; the lower end of the sleeve (4-1) is rotatably connected to the upper part of the base (1), and the upper part is slidably connected to the support rod (4-2); the upper end of the support rod (4-2) is rotatably connected to the lower part of the support plate (2); the fixing component is connected to the sleeve (4-1) and the support rod (4-2) to fix the relative position of the sleeve (4-1) and the support rod (4-2).

6. A broken ground support device according to claim 5, characterised in that: The fixing assembly includes at least one screw hole (4-3) disposed on the upper side wall of the sleeve (4-1), and a set screw passing through the screw hole (4-3) and engaging with the support rod (4-2).

7. A broken ground support device according to claim 6, characterised in that: The support rod (4-2) is provided with a groove (4-4) extending along its axial direction, the width of the groove (4-4) being equal to the diameter of the screw hole (4-3); the groove (4-4) abuts against the set screw.

8. A broken ground support device according to claim 5, characterised in that: The support rod (4-2) has an expansion rod (4-5) at its bottom, and the diameter of the expansion rod (4-5) is larger than the diameter of the support rod (4-2); the upper part of the sleeve (4-1) has an annular baffle (4-6), and the inner diameter of the baffle (4-6) is equal to the diameter of the support rod (4-2).

9. A broken ground support device according to claim 1, characterised in that: The left and right ends of the support plate (2) extend downwards and away from the center to form an inclined surface.

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