Rotary full-section temporary supporting device

Abstract

The invention provides a rotary type full-section temporary supporting device. The rotary type full-section temporary supporting device comprises a first rotary driving part arranged above a heading machine, a telescopic mechanism connected to the power output end of the first rotary driving part, a pivoting assembly connected to the end of the telescopic mechanism and a supporting unit connected to the pivoting assembly in a pivoted mode. The first rotary driving part drives the telescopic mechanism to circumferentially rotate around the horizontal direction of the heading machine. The pivoting assembly comprises a first driving assembly, a second driving assembly and a first driving part, the first driving assembly and the second driving assembly are connected in a pivoting mode, the first driving part is connected between the first driving assembly and the second driving assembly, the first driving assembly is connected with the telescopic mechanism and used for driving the supporting unit to rotate in the first direction, and the second driving assembly is connected with the supporting unit. The supporting unit is driven to rotate in the second direction. The supporting unit is in a working state when located in the front of the heading machine and is in a folded state when located over the tail of the heading machine. The supporting units capable of being adjusted at multiple angles are arranged, and multi-angle and multi-position adjustment can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of temporary support device, in particular to a rotary full-section temporary support device. BACKGROUND

[0002] In the underground engineering such as coal mine and tunnel, the machine-mounted temporary support of the tunneling machine is the key equipment to ensure the construction safety, and its core function is to timely support the top surrounding rock of the working face after the cutting operation is completed, so as to prevent the roof collapse accident. At present, the mainstream machine-mounted temporary support device of the tunneling machine generally adopts fixed installation, that is, the whole support structure is integrated in the cutting part of the tunneling machine, the oil cylinder pushes the roof support to extend forward and overturn downward to the specified position, so as to form the support of the working top and realize the temporary support function.

[0003] Most of the existing temporary support devices are arranged on the upper part of the cutting head. Before cutting, the actuator drives the temporary support to be placed on the coal wall upward. Since the cutting arm itself is located in the front of the overall structure of the tunneling machine, the cutting operation space needs to be reserved around it, which leads to the extremely limited installation space of the temporary support device, directly causing the small effective support area of the roof support, and it is difficult to completely cover the dangerous area of the working face top.

[0004] On the other hand, due to the limitation of installation position and structure size, the existing support device can only support the roof directly above the working face, and cannot extend to the front area of the tunneling direction and the left and right sides of the working face, forming a support blind area. These uncovered areas still have the safety hazards of surrounding rock falling and collapsing during the tunneling operation, which threatens the safety of the construction personnel and equipment. SUMMARY

[0005] Therefore, the present application aims to provide a rotary full-section temporary support device, which can increase the support range and form a complete load ring, and ensure that the support device can be flexibly stored in the non-working state while increasing the roof support area.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows: A rotary full-section temporary support device, comprising a first rotary driving part arranged above the tunneling machine, a telescopic mechanism connected to the power output end of the first rotary driving part, a pivot assembly connected to the end of the telescopic mechanism, and a support unit pivotally connected to the pivot assembly. The first rotary driving part drives the telescopic mechanism to rotate around the horizontal direction of the tunneling machine. The pivot assembly comprises a first driving assembly and a second driving assembly pivotally connected, and a first driving part connected between the first driving assembly and the second driving assembly. The first driving assembly is connected with the telescopic mechanism, and is used for driving the support unit to rotate in a first direction. The second driving assembly is connected with the support unit, and is used for driving the support unit to rotate in a second direction. The support unit is in a working state when being located at the front part of the tunneling machine, and is in a folding state when being located directly above the tail part of the tunneling machine.

[0007] Further, a rotating seat is connected with the power output end of the first rotating driving part, the telescopic mechanism is pivotally connected on the rotating seat, a second driving part is further arranged on the rotating seat, and the power output end of the second driving part is connected with the telescopic mechanism. The second driving part is used for adjusting the angle between the telescopic mechanism and the ground.

[0008] Further, a first support is further arranged on the rotating seat, the telescopic mechanism comprises a fixed part and a plurality of movable parts. The fixed part is pivotally connected on the first support. A third driving part is arranged in the fixed part, and the tail end of the movable part is connected with the power output end of the third driving part.

[0009] Further, the first driving assembly comprises a first driving motor and a second support connected with the power output end of the first driving motor, and the second driving assembly comprises a second driving motor and a third support connected with the power output end of the second driving motor. The second support and the third support are pivotally connected, and the first driving part drives the third support to pivotally move relative to the second support.

[0010] Further, the support unit comprises a fixed support and a movable support telescopically connected with the fixed support. The fixed support is provided with a first telescopic driving part, the movable support comprises a second extension frame, two second extension frames are respectively inserted on two sides of the fixed support, and two first telescopic driving parts drive two second extension frames to move close to or away from each other.

[0011] Further, the fixed support comprises a horizontally pivoted support and a first folding support pivotally connected with the horizontally pivoted support. A fourth driving part is arranged between the horizontally pivoted support and the first folding support, the fourth driving part drives the first folding support to be in an unfolded state or a folded state, and in the folded state, the first folding support is arranged in parallel below the horizontally pivoted support.

[0012] Further, the activity support frame further comprises two first extension frames telescopically connected on both sides of the horizontal frame, the first extension frame comprises a telescopic frame inserted on the horizontal frame, and a second folding frame pivotally connected on the telescopic frame, and a fifth driving part is arranged between the telescopic frame and the second folding frame. The fifth driving part is used for driving the telescopic frame to rotate, so that the telescopic frame is arranged in parallel below the second folding frame.

[0013] Further, a second telescopic driving part is arranged on the horizontal frame, and the second telescopic driving part drives the two first extension frames to move close to or away from each other.

[0014] Further, in the folded state, the two second folding frames are folded in parallel below the horizontal frame, and the first folding frame is folded in parallel below the second folding frame.

[0015] Compared with the prior art, the present application has the following advantages: The rotary full-face temporary support can drive the support unit to extend to the front and both sides of the tunneling machine through the horizontal rotation of the telescopic mechanism driven by the first rotary driving part and the telescoping action of the telescopic mechanism. Meanwhile, the first driving assembly in the pivot assembly drives the support unit to rotate in the vertical direction, and the second driving assembly drives the support unit to make a small adjustment in the horizontal direction, so that the support unit can cover the working top surface and can be flexibly extended to the front area to be excavated and the side wall area, thereby breaking through the limitation of the existing structure that can only support the top, expanding the effective coverage range of the temporary support, and eliminating the support blind area. At the same time of increasing the top support area, it is necessary to ensure that the support device can be flexibly stored in the non-working state, avoid occupying the cutting operation space and interfering with the normal cutting action and walking function of the tunneling machine, and ensure the continuity and efficiency of the tunneling operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The rotary full-face temporary support in the working state connected with the tunneling machine from a first perspective; Figure 2 The rotary full-face temporary support in the working state connected with the tunneling machine from a second perspective; Figure 3 The rotary full-face temporary support in the folded state connected with the tunneling machine; Figure 4A stereogram of the working state of the support unit described in the embodiment of the present application; Figure 5 A stereogram of the folded state of the support unit described in the embodiment of the present application.

[0017] Explanation of reference numerals: 1, first rotary driving part; 2, telescopic mechanism; 3, pivoting assembly; 4, support unit; 5, rotating seat; 6, second driving part; 7, first support; 8, heading machine; 9, first connecting seat; 10, second connecting seat; 201, fixed part; 202, multi-stage movable part; 203, third driving part; 301, first driving assembly; 302, second driving assembly; 303, first driving part; 401, fixed support; 402, movable support; 403, first telescopic driving part; 3011, first driving motor; 3012, second support; 3021, second driving motor; 3022, third support; 4021, first extension frame; 4022, second extension frame; 4023, fifth driving part; 40211, telescopic frame; 40212, second folding frame; 4011, horizontal frame; 4012, first folding frame; 4013, fourth driving part. DETAILED DESCRIPTION

[0018] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship 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. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connector" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in conjunction with the specific circumstances.

[0021] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0022] The present embodiment relates to a rotary full-face temporary support, as a whole, as shown in the figure, the temporary support comprises a first rotary driving part 1 arranged above the tunneling machine 8, an extension mechanism 2 connected to the power output end of the first rotary driving part 1, a pivoting assembly 3 connected to the end of the extension mechanism 2, and a support unit 4 pivotally connected to the pivoting assembly 3. The first rotary driving part 1 drives the extension mechanism 2 to rotate horizontally around the tunneling machine 8. Figures 1 to 3

[0023] The pivoting assembly 3 comprises a first driving assembly 301 and a second driving assembly 302 pivotally connected, and a first driving part 303 connected between the first driving assembly 301 and the second driving assembly 302. The first driving assembly 301 is connected to the extension mechanism 2 for driving the support unit 4 to rotate in a first direction, and the second driving assembly 302 is connected to the support unit 4 for driving the support unit 4 to rotate in a second direction. The support unit 4 is in a working state when located in front of the tunneling machine 8, and is in a folded state when located directly above the tail of the tunneling machine 8.

[0024] According to the above design idea, the rotary full-face temporary support of the present embodiment can drive the support unit 4 to extend forward and to the left and right sides of the tunneling machine 8 by driving the extension mechanism 2 to rotate horizontally by the first rotary driving part 1, in combination with the extension action of the extension mechanism 2. At the same time, the first driving assembly 301 in the pivoting assembly 3 drives the support unit 4 to rotate vertically, and the second driving assembly 302 drives the support unit 4 to fine-tune the angle in the horizontal direction, which facilitates the support unit 4 to cover the working top surface and also to extend flexibly to the front area to be excavated and the side wall area on both sides, breaking through the limitation of the existing structure that can only support the top, expanding the effective coverage range of the temporary support, and eliminating the support blind area. Moreover, while increasing the top support area, it is necessary to ensure that the support device can be flexibly stored in a non-working state, avoid occupying the cutting operation space and interfering with the normal cutting action and walking function of the tunneling machine 8, and ensure the continuity and efficiency of the tunneling operation.

[0025] Based on the above overall introduction, as a specific implementation manner, as shown in the figure, Figures 1 to 2 ​As shown, the temporary support device is arranged on the heading machine 8, a mounting seat is arranged on the heading machine 8, the first rotary driving part 1 adopts a hydraulic motor, and the support unit 4 and the telescopic mechanism 2 are driven by the hydraulic motor to move to the front of the heading machine 8 to be in a working state, so that complete and stable full-face support of the heading working face can be completed, the roof and the surrounding rock pressure can be effectively resisted, and the safety of the workers and the equipment can be ensured. Meanwhile, the support unit 4 and the telescopic mechanism 2 can also be driven to move to the tail of the heading machine 8 directly above, the occupation of the support unit 4 to the transportation channel or the equipment moving space behind the heading machine 8 can be reduced, the utilization rate of the underground space can be improved, and the smoothness of the overall heading process can be ensured.

[0026] Preferably, the power output end of the first rotary driving part 1 is connected with a rotating seat 5, the telescopic mechanism 2 is pivotally connected to the rotating seat 5, and the rotating seat 5 is further provided with a second driving part 6, the power output end of the second driving part 6 is connected to the telescopic mechanism 2, and the second driving part 6 is used for adjusting the angle of the telescopic mechanism 2 with the ground. The second driving part 6 adopts a hydraulic oil cylinder, and the above arrangement enables the telescopic mechanism 2 not only to realize horizontal rotation with the rotating seat 5, but also to flexibly change the inclination angle of the telescopic mechanism 2 and the support unit 4 with the ground, so as to adapt to heading section working conditions of different slopes and heights, further expand the support application range, and ensure precise support under complex geological conditions.

[0027] As shown in the figure, Figures 1 to 3 The rotating seat 5 is further provided with a first support 7, and the telescopic mechanism 2 includes a fixed part 201 and a multi-stage movable part 202. The fixed part 201 is pivotally connected to the first support 7, the fixed part 201 is provided with a third driving part 203 inside, and the tail end of the multi-stage movable part 202 is connected to the power output end of the third driving part 203. The third driving part 203 adopts a hydraulic oil cylinder, and the multi-stage movable part 202 specifically adopts a two-stage telescopic sleeve-connected rectangular pipe. The fixed part 201 also adopts a rectangular pipe and is arranged outside the multi-stage movable part 202. Such an arrangement can increase the extension distance of the support unit 4, meet the long-distance support requirements of large-section heading, adapt to the compact space of small-section operation, and improve the adaptability of the equipment to different section sizes.

[0028] In addition, as shown in the figure, Figures 4 to 5 The first driving assembly 301 includes a first driving motor 3011 and a second support 3012 connected to the power output end of the first driving motor 3011, and the second driving assembly 302 includes a second driving motor 3021 and a third support 3022 connected to the power output end of the second driving motor 3021. The second support 3012 and the third support 3022 are pivotally connected, and the first driving part 303 drives the third support 3022 to pivot relative to the second support 3012. By arranging two pivotally connected driving motors, the angle of the support unit 4 can be independently adjusted to adapt to complex working conditions, and the area needing support can be quickly and accurately aligned.

[0029] As a preferred implementation, as shown in Figures 4 to 5 The support unit 4 includes a fixed support 401 and a movable support 402 telescopically connected to the fixed support 401. The fixed support 401 is provided with a first telescopic driving part 403, and the movable support 402 includes two second extension frames 4022 telescopically connected to the two sides of the fixed support 401, and the two first telescopic driving parts 403 drive the two second extension frames to move closer to or away from each other. The first telescopic driving part 403 is a hydraulic oil cylinder, and the two hydraulic oil cylinders in the embodiment are oppositely arranged to realize synchronous or asynchronous adjustment of the movable support 402, quickly expand the support range, accurately support the local narrow gap area, and improve the support flexibility.

[0030] Further, as shown in Figures 4 to 5 The fixed support 401 includes a horizontally pivoted frame 4011 and a first folding frame 4012 pivoted to the horizontally pivoted frame 4011. A fourth driving part 4013 is arranged between the horizontally pivoted frame 4011 and the first folding frame 4012, and the fourth driving part 4013 drives the first folding frame 4012 to an unfolded state or a folded state. In the folded state, the first folding frame 4012 is arranged in parallel below the horizontally pivoted frame 4011. As shown in Figure 4 and Figure 5 The horizontally pivoted frame 4011 is a rectangular frame provided with a first connecting seat 9, and the first folding frame 4012 is composed of two rectangular frames provided with a connecting plate and a first telescopic driving part 403. The fourth driving part 4013 is a telescopic oil cylinder, and the fourth driving part 4013 drives the first folding frame 4012 to rotate relative to the horizontally pivoted frame 4011. In the folded state, the folding space of the fixed support 401 can be greatly reduced, especially when the support unit 4 is in the folded state at the tail of the heading machine 8, the overall occupied space can be further compressed to avoid occupying the underground space.

[0031] In addition, as shown in Figures 4 to 5 The movable support 402 includes two first extension frames 4021 telescopically connected to the two sides of the horizontally pivoted frame 4011, and the first extension frame 4021 includes a telescopic frame 40211 telescopically connected to the horizontally pivoted frame 4011 and a second folding frame 40212 pivoted to the telescopic frame 40211, and a fifth driving part 4023 is arranged between the telescopic frame 40211 and the second folding frame 40212. The fifth driving part 4023 drives the telescopic frame 40211 to rotate so that the telescopic frame 40211 is arranged in parallel below the second folding frame 40212.

[0032] Specifically, as shown in Figures 4 to 5As shown, the fifth driving part 4023 adopts a hydraulic cylinder, and the fifth driving part 4023 is arranged on the two first extension frames 4021, and is used to drive the two second folding frames 40212 to rotate to realize the unfolded and folded states. The telescopic frame 40211 is hingedly connected with a second connecting seat 10, the second connecting seat 10 is fixed on the second folding frame 40212, and the first extension frame 4021 is formed by the telescopic frame 40211 inserted into the horizontal frame 4011 and the second folding frame 40212 pivotally connected, and the support range of the horizontal frame 4011 is bidirectionally expanded to two sides, so that the support flexibility is increased.

[0033] In addition, as Figures 4 to 5 shown, the horizontal frame 4011 is provided with a second telescopic driving part, and the second telescopic driving part drives the two first extension frames 4021 to move close to or away from each other. The second telescopic driving part adopts a telescopic hydraulic cylinder, and specifically, the second telescopic driving part is arranged in a rectangular tube of the horizontal frame 4011, so as to reduce the occupation of external space.

[0034] Secondly, as Figure 3 shown, in the folded state, the two second folding frames 40212 are folded in parallel below the horizontal frame 4011, and the first folding frame 4012 is folded below the second folding frame 40212. The support unit 4 has a three-layer ordered stacking structure in the folded state, that is, the components are closely attached in the same direction, and the overall storage volume is greatly compressed, so that the support unit 4 can be adapted to a narrow tunnel and has a width equal to that of the tunneling machine 8, and the equipment in the tunnel can be moved smoothly. In addition, the two second folding frames 40212 symmetrically distributed and the first folding frame 4012 below form balanced layered support, so that the overall stress is uniform after folding, and the transportation shaking is reduced.

[0035] In addition, as Figures 1 to 2 shown, in the fully unfolded state of the support unit 4 of the embodiment, the first folding frame 4012 and the second folding frame 40212 are perpendicular to the horizontal frame 4011, so that the protection of the top and the side can be realized, and the safety during tunneling of the tunneling machine 8 is improved. The execution components of the support unit 4 transmit the signal detection signals such as displacement sensors and pressure sensors to the PLC controller, so as to realize the switching of the support unit 4 between the working state and the folded state.

[0036] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary full-face temporary support device, characterized in that: a first rotary driving part (1) is arranged above a tunneling machine (8); an extension mechanism (2) is connected to a power output end of the first rotary driving part (1); a pivot assembly (3) is connected to an end of the extension mechanism (2); and a support unit (4) is pivotally connected to the pivot assembly (3); the first rotary driving part (1) drives the extension mechanism (2) to rotate horizontally around the tunneling machine (8); the pivot assembly (3) comprises a first driving assembly (301) and a second driving assembly (302) which are pivotally connected, and a first driving part (303) which is connected between the first driving assembly (301) and the second driving assembly (302); the first driving assembly (301) is connected to the extension mechanism (2) and drives the support unit (4) to rotate in a first direction; the second driving assembly (302) is connected to the support unit (4) and drives the support unit (4) to rotate in a second direction; the support unit (4) is in a working state when located in front of the tunneling machine (8), and is in a folded state when located directly above the tunneling machine (8). 2.The rotary full-face temporary support device according to claim 1, characterized in that: a rotating seat (5) is connected to the power output end of the first rotary driving part (1); the extension mechanism (2) is pivotally connected to the rotating seat (5); a second driving part (6) is further arranged on the rotating seat (5); and a power output end of the second driving part (6) is connected to the extension mechanism (2); the second driving part (6) is used to adjust the angle between the extension mechanism (2) and the ground. 3.The rotary full-face temporary support device according to claim 2, characterized in that: a first support (7) is further arranged on the rotating seat (5); the extension mechanism (2) comprises a fixed part (201) and a plurality of movable parts (202); the fixed part (201) is pivotally connected to the first support (7); and a third driving part (203) is arranged in the fixed part (201); and a tail end of the plurality of movable parts (202) is connected to a power output end of the third driving part (203). 4.The rotary full-face temporary support device according to claim 1, characterized in that: the first driving assembly (301) comprises a first driving motor (3011) and a second support (3012) connected to a power output end of the first driving motor (3011); and the second driving assembly (302) comprises a second driving motor (3021) and a third support (3022) connected to a power output end of the second driving motor (3021); the second support (3012) and the third support (3022) are pivotally connected; and the first driving part (303) drives the third support (3022) to pivot relative to the second support (3012). 5.The rotary full-face temporary support device according to claim 4, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The supporting unit (4) comprises a fixed support (401) and a movable support (402) telescopically connected to the fixed support (401); The fixed support (401) is provided with a first telescopic driving part (403), and the movable support (402) comprises a second extension frame (4022), two second extension frames (4022) are respectively inserted on both sides of the fixed support (401), and two first telescopic driving parts (403) drive two second extension frames (4022) to approach or move away from each other.

6. The rotary full-face temporary support device according to claim 5, characterized in that: The fixed support (401) comprises a horizontally pivoted frame (4011) and a first folding frame (4012) pivoted to the horizontally pivoted frame (4011); The horizontally pivoted frame (4011) and the first folding frame (4012) are provided with a fourth driving part (4013), the fourth driving part (4013) drives the first folding frame (4012) to be in an unfolded state or a folded state, and in the folded state, the first folding frame (4012) is arranged in parallel below the horizontally pivoted frame (4011).

7. The rotary full-face temporary support device according to claim 6, characterized in that: The movable support (402) further comprises two first extension frames (4021) telescopically connected to both sides of the horizontally pivoted frame (4011), the first extension frame (4021) comprises a telescopic frame (40211) inserted on the horizontally pivoted frame (4011) and a second folding frame (40212) pivoted to the telescopic frame (40211), and the telescopic frame (40211) and the second folding frame (40212) are provided with a fifth driving part (4023); The fifth driving part (4023) is used for driving the telescopic frame (40211) to rotate, so that the telescopic frame (40211) is arranged in parallel below the second folding frame (40212).

8. The rotary full-face temporary support device according to claim 7, characterized in that: The horizontally pivoted frame (4011) is provided with a second telescopic driving part, and the second telescopic driving part drives two first extension frames (4021) to approach or move away from each other.

9. The rotary full-face temporary support device according to claim 7, characterized in that: In the folded state, two second folding frames (40212) are folded in parallel below the horizontally pivoted frame (4011), and the first folding frame (4012) is folded in parallel below the second folding frame (40212).

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