Safety protection device for driving working face

Abstract

The utility model discloses a safety protection device for a driving working face, and relates to the technical field of coal mines. The safety protection device for the driving face comprises a movable base, a driving mechanism is installed on the top of the movable base, a supporting structure is installed on the top of the driving mechanism, the supporting structure comprises a lifting table, a supporting top plate and a movable supporting plate, and the lifting table is installed at the movable end of the driving mechanism; two fixing supports are oppositely fixed between the supporting top plate and the lifting table, two movable grooves are oppositely formed in the supporting top plate, the movable supporting plate is movably arranged in the movable grooves, and an adjusting assembly is arranged between the supporting top plate and the movable supporting plate so that the movable supporting plate can be flexibly adjusted to move along the movable grooves. The supporting range of the device is effectively expanded, the purpose of adjusting the supporting width of the top of the device is achieved, the device is suitable for supporting underground roadways of different widths, and the protection effect of the device is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to coal mine technical field, especially, relate to a safety device for heading face. BACKGROUND

[0002] The heading face is also called heading head, which is a roadway first mined when preparing for the mining face. The roadway includes the functions of coal exploration, coal mining, water exploration, gas exploration, etc. Specifically, it is a separate single-end roadway mainly for heading and supplemented by other geological conditions. In order to ensure the safety during the heading process of coal mining, a safety device is needed to avoid collapse and safety accidents.

[0003] Publication No. CN221462348U discloses a safety device for heading face. By setting a driving structure, the driving motor inside the driving box can drive the rotating column to rotate, and the rotation of the rotating column can drive the support frame to adjust the height of the support structure through the lifting frame. The device can work in different height underground roadways, expanding the application range of the device. When the device is idle, the height of the device can be lowered to the minimum, reducing the size of the device and facilitating storage and transportation.

[0004] The above-mentioned prior art still has the following disadvantages in the specific implementation process:

[0005] Only the height of the safety device can be adjusted, the width of the device cannot be adjusted, the use of different width underground roadways is not adapted, the support range is limited, the falling stones on the top of the roadway cannot be effectively shielded and protected, and the protection effect is not good.

[0006] In view of the above problems, we propose a safety device for heading face. Utility model content

[0007] Technical scheme

[0008] In order to solve the above technical problems, the utility model provides a safety device for heading face, which comprises a mobile base, a driving mechanism for adjusting the height of the device is installed on the top of the mobile base, a support structure is installed on the top of the driving mechanism, the support structure comprises a lifting platform, a support top plate and a movable support plate, two fixed supports are fixed between the support top plate and the lifting platform, two movable grooves are formed on the support top plate, the movable support plate is movably arranged in the movable groove, an adjusting assembly and a reset assembly are arranged between the support top plate and the movable support plate, the adjusting assembly comprises:

[0009] Screw rod, two said screw rod is arranged in the support roof downside, the screw rod is screwed with two movable block, the movable block top and movable support plate bottom between through the rotating shaft rotating installation has the connecting arm.

[0010] The inside of the movable support plate is provided with a plurality of limiting grooves, a rectangular groove penetrates through one side of the inner wall of the limiting groove, a T-shaped plate with a T-shaped cross section is movably arranged in the limiting groove, the T-shaped plate is movably matched with the rectangular groove, and the inner side end of the T-shaped plate is fixedly connected with the inner wall of the movable groove.

[0011] The reset assembly comprises a fixed block, a fixed rod, a reset spring and a U-shaped connecting frame, the fixed block is fixed at the bottom of the support roof, two fixed rods are fixed on the two side surfaces of the fixed block, a disc is fixed at the end of the fixed rod away from the fixed block, one end of the U-shaped connecting frame is movably sleeved on the fixed rod, the other end of the U-shaped connecting frame is fixedly connected with the bottom of the movable support plate, the reset spring is sleeved on the outer side of the fixed rod, and the two ends of the reset spring are fixedly connected with the U-shaped connecting frame and the disc respectively.

[0012] The adjusting assembly further comprises a synchronous wheel, a synchronous belt and a servo motor, the screw rod is rotatably arranged between two fixed supports, two support shafts are rotatably arranged on one side of the fixed support, one end of the support shaft is fixedly connected with the screw rod, the other end of the support shaft is connected with the synchronous wheel, and the synchronous belt is drivingly arranged between the two synchronous wheels.

[0013] The servo motor is installed on the bottom side of the support roof through the mounting plate, the output end of the servo motor is connected with the adjacent synchronous wheel, guide rods are arranged on both sides of the screw rod, the two ends of the guide rod are fixedly connected with the two fixed supports respectively, the guide rod penetrates through the movable block, the movable block is slidingly matched with the guide rod, and the threads of the center threaded holes of two adjacent movable blocks are opposite.

[0014] A plurality of universal wheels are installed at the bottom of the moving base, the universal wheel is provided with a self-locking structure, and the bottom of the lifting platform is fixedly connected with the movable end of the driving mechanism.

[0015] Compared with the prior art, the beneficial effects of the utility model lie in:

[0016] The utility model discloses a synchronous wheel and synchronous belt's mutual cooperation under the cooperation of two screw rods, under the thread cooperation of movable block and screw rod, conveniently adjust the mutual approach of two adjacent movable blocks, combine the rotation axis of connecting arm two ends, and the activity cooperation of movable support plate and movable slot, and then push the corresponding movable support plate to the outside of movable slot, effectively expand the support range of device top, reach the purpose of adjusting device support width, adapt to the support use of different width underground roadway, effectively improve the protection effect of device, solve the height of adjusting safety protection device of prior art only has the function, cannot adjust the width of device, adapt to the use of different width underground roadway, and the support range is more limited, cannot effectively shield the gravel etc. of roadway top drop and protect, and the drawback of poor protection effect is solved.

[0017] Among them, under the elastic action of reset spring, combine the sliding cooperation of U-shaped connecting frame and fixed rod, conveniently drive movable support plate to move to the inside of movable slot in the process that two adjacent movable blocks are away from each other after use, realize the purpose of driving movable support plate to restore to initial position, and facilitate the subsequent folding and unfolding of device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the structure schematic diagram of the utility model use state;

[0020] Figure 3 It is Figure 2 The structure schematic diagram of support structure;

[0021] Figure 4 It is Figure 3 The plan view;

[0022] Figure 5 It is Figure 4 The structure schematic diagram of section A-A;

[0023] Figure 6 It is Figure 5 The enlarged structure schematic diagram of B;

[0024] Figure 7 It is Figure 6 The enlarged structure schematic diagram of C;

[0025] Figure 8 It is Figure 3 The structure schematic diagram of another view;

[0026] Figure 9 It is Figure 8 The enlarged structure schematic diagram of D.

[0027] The labels in the attached diagram are as follows: 1. Movable base; 2. Drive mechanism; 3. Lifting platform; 4. Support top plate; 5. Movable support plate; 6. Movable groove; 7. Fixed bracket; 8. Lead screw; 9. Movable block; 10. Connecting arm; 11. T-shaped plate; 12. Limiting groove; 13. Fixed block; 14. Fixed rod; 15. Return spring; 16. U-shaped connecting frame; 17. Synchronous pulley; 18. Synchronous belt; 19. Servo motor; 20. Guide rod. Detailed Implementation

[0028] This specific embodiment is a safety protection device for tunneling faces, such as... Figures 1-9 As shown, the safety protection device for the tunneling face includes a movable base 1. A drive mechanism 2 for adjusting the device height is installed on the top of the movable base 1. A support structure is installed on the top of the drive mechanism 2. The support structure includes a lifting platform 3, a support top plate 4, and a movable support plate 5. Two fixed supports 7 are fixed relative to the support top plate 4 and the lifting platform 3. Two movable slots 6 are opened opposite each other on the support top plate 4. The movable support plate 5 is movably disposed within the movable slots 6. An adjustment assembly and a reset assembly are provided between the support top plate 4 and the movable support plate 5. The adjustment assembly includes:

[0029] Two lead screws 8 are arranged opposite each other on the underside of the support top plate 4. Two movable blocks 9 are threaded on the lead screws 8. A connecting arm 10 is rotatably installed between the top of the movable block 9 and the bottom of the movable support plate 5 via a rotating shaft.

[0030] The threaded engagement between the movable block 9 and the lead screw 8 facilitates the adjustment of the proximity of two adjacent movable blocks 9. Combined with the rotating shafts at both ends of the connecting arm 10 and the movable engagement between the movable support plate 5 and the movable groove 6, the corresponding movable support plate 5 is pushed outward into the movable groove 6, effectively expanding the support range at the top of the device and achieving the purpose of adjusting the support width of the device. This adapts to the support use of underground roadways of different widths and effectively improves the protective effect of the device.

[0031] The movable support plate 5 has several limiting grooves 12 inside. A rectangular groove runs through one side of the inner wall of the limiting groove 12. A T-shaped plate 11 with a T-shaped cross-section is movably installed inside the limiting groove 12. The T-shaped plate 11 is movably fitted with the rectangular groove. The inner end of the T-shaped plate 11 is fixedly connected to the inner wall of the movable groove 6. Through the mutual cooperation between the T-shaped plate 11 and the limiting groove 12, the movable support plate 5 is effectively limited, thereby limiting the movement distance of the movable block 9 and the U-shaped connecting frame 16, ensuring the stability of the device during adjustment and use.

[0032] The reset assembly comprises a fixed block 13, fixed rods 14, a reset spring 15 and a U-shaped connecting frame 16, the fixed block 13 is fixed at the bottom of the support top plate 4, two fixed rods 14 are oppositely fixed at the two side surfaces of the fixed block 13, the end of the fixed rod 14 away from the fixed block 13 is fixed with a disc, the U-shaped connecting frame 16 is movably sleeved on the fixed rod 14 at one end, the other end of the U-shaped connecting frame 16 is fixedly connected with the bottom of the movable support plate 5, the reset spring 15 is sleeved outside the fixed rod 14, and the two ends of the reset spring 15 are fixedly connected with the U-shaped connecting frame 16 and the disc respectively.

[0033] The adjusting assembly further comprises synchronous wheels 17, a synchronous belt 18 and a servo motor 19, the lead screw 8 is rotationally arranged between the two fixed supports 7, two support shafts are rotationally arranged on one side of the fixed support 7, one end of the support shaft is fixedly connected with the lead screw 8, the other end of the support shaft is connected with the synchronous wheel 17, and the synchronous belt 18 is transmissionally arranged between the two synchronous wheels 17.

[0034] The servo motor 19 is installed on one side of the bottom of the support top plate 4 through the mounting plate, the output end of the servo motor 19 is connected with the adjacent synchronous wheel 17, the lead screw 8 is provided with a guide rod 20 on each side, the two ends of the guide rod 20 are fixedly connected with the two fixed supports 7 respectively, the guide rod 20 penetrates through the movable block 9, the movable block 9 is in sliding fit with the guide rod 20, and the threads of the center threaded holes of the adjacent two movable blocks 9 are opposite in direction.

[0035] A plurality of universal wheels are installed at the bottom of the moving base 1, the universal wheels are provided with self-locking structures, the universal wheels facilitate the overall movement of the device, and the bottom of the lifting platform 3 is fixedly connected with the movable end of the driving mechanism 2.

[0036] Embodiment:

[0037] In use, first, under the action of the moving base 1, the device is moved to a suitable position as a whole, the height of the device is adjusted through the driving mechanism 2 until the top of the support top plate 4 is in contact with the vault of the underground roadway;

[0038] When the width of the underground roadway is wide, the width of the device needs to be adjusted, the servo motor 19 is started, the synchronous wheel 17 connected with the servo motor 19 is driven to rotate by the servo motor 19, under the action of the synchronous belt 18 and the supporting shaft, the two lead screws 8 are driven to rotate synchronously, under the thread cooperation of the movable block 9 and the lead screw 8, combined with the opposite thread directions of the thread holes in the adjacent two movable blocks 9, and the sliding cooperation of the movable block 9 and the guide rod 20, the adjacent two movable blocks 9 are driven to stably approach each other, under the action of the rotating shafts at the two ends of the connecting arm 10, combined with the sliding cooperation of the U-shaped connecting frame 16 and the fixed rod 14, the movable supporting plate 5 is pushed to the outside of the movable groove 6 through the connecting arm 10, the supporting range of the top of the device is effectively expanded, the purpose of adjusting the width of the device is achieved, the supporting use of the device in the underground roadway with different widths is adapted, the protection effect of the device is effectively improved, the defects that the existing technology only has the function of adjusting the height of the safety protection device, cannot adjust the width of the device, cannot adapt to the use of the underground roadway with different widths, the supporting range is relatively limited, and the falling stones and the like on the top of the roadway cannot be effectively shielded and protected, and the protection effect is poor are solved;

[0039] In the process that the movable supporting plate 5 is pushed outwards, under the sliding cooperation of the U-shaped connecting frame 16 and the fixed rod 14, the U-shaped connecting frame 16 is driven to move synchronously, and the reset spring 15 is compressed along with the movement of the U-shaped connecting frame 16;

[0040] After use, the servo motor 19 is driven to rotate reversely, the adjacent two movable blocks 9 are adjusted to move away from each other, under the elastic action of the compressed reset spring 15, the U-shaped connecting frame 16 is extruded to the direction of approaching the fixed block 13, and then the movable supporting plate 5 is driven to move to the inside of the movable groove 6, until the adjacent two movable blocks 9 move to the most distant position, at this time, under the cooperation of the reset spring 15 and the U-shaped connecting frame 16, the movable supporting plate 5 is driven to be completely stored in the inside of the movable groove 6, and returns to the initial state, and meanwhile, the adjusting device is adjusted to the lowest position by the driving mechanism 2, so that the space occupation area of the device is reduced, and the device is convenient to store and move.

[0041] It should be further explained that the mounting structure, connection mode or setting mode of each component in the utility model are common mechanical modes, as long as the beneficial effects can be achieved, and the servo motor 19 in the utility model is purchased on the market, and the person skilled in the art can install and use it according to the requirements;

[0042] The driving mechanism 2 is used for adjusting the height of the device, and is the existing technology disclosed in the cited authorized patent in the background art, and the specific structure, working principle and adjusting method are the existing technology disclosed, and will not be described here;

[0043] The driving mechanism 2 is provided with a battery, so as to provide power for the driving mechanism 2 and the servo motor 19, and the use of the device is facilitated.

[0044] All the technical features in the embodiment can be freely combined according to actual needs.

[0045] The preferred embodiments disclosed above are only used for helping to describe the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments, so as to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A safety protection device for a tunneling face, comprising a mobile base (1), a driving mechanism (2) for adjusting the height of the device is installed on the top of the mobile base (1), a supporting structure is installed on the top of the driving mechanism (2), characterized in that, The supporting structure comprises a lifting platform (3), a supporting roof (4) and a movable supporting plate (5), two fixed supports (7) are relatively fixed between the supporting roof (4) and the lifting platform (3), two movable grooves (6) are relatively formed on the supporting roof (4), the movable supporting plate (5) is movably arranged in the movable groove (6), and an adjusting assembly and a reset assembly are arranged between the supporting roof (4) and the movable supporting plate (5). The screw rods (8) are movably arranged on the bottom side of the supporting roof (4), two movable blocks (9) are threadedly arranged on the screw rods (8), and a connecting arm (10) is rotatably arranged between the top of the movable block (9) and the bottom of the movable supporting plate (5).

2. A safety shield for use at a face according to claim 1, characterised in that, A plurality of limiting grooves (12) are formed in the movable supporting plate (5), a rectangular groove is formed in one side of the inner wall of the limiting groove (12), a T-shaped plate (11) with a T-shaped cross section is movably arranged in the limiting groove (12), the T-shaped plate (11) is movably matched with the rectangular groove, and one end of the T-shaped plate (11) is fixedly connected with the inner wall of the movable groove (6).

3. A safety shield for use at a face according to claim 2, characterised in that, The reset assembly comprises a fixed block (13), a fixed rod (14), a reset spring (15) and a U-shaped connecting frame (16), the fixed block (13) is fixed to the bottom of the supporting roof (4), the two fixed rods (14) are fixed to the two side surfaces of the fixed block (13), a disc is fixed to the end of the fixed rod (14) away from the fixed block (13), one end of the U-shaped connecting frame (16) is movably sleeved on the fixed rod (14), the other end of the U-shaped connecting frame (16) is fixedly connected with the bottom of the movable supporting plate (5), and the reset spring (15) is sleeved on the outer side of the fixed rod (14) and fixedly connected with the U-shaped connecting frame (16) and the disc at two ends.

4. A safety shield for use at a face according to claim 3, characterised in that, The adjusting assembly further comprises a synchronous wheel (17), a synchronous belt (18) and a servo motor (19), the screw rod (8) is rotatably arranged between the two fixed supports (7), two supporting shafts are rotatably arranged on one side of the fixed support (7), one end of the supporting shaft is fixedly connected with the screw rod (8), the other end of the supporting shaft is connected with the synchronous wheel (17), and the synchronous belt (18) is drivingly arranged between the two synchronous wheels (17).

5. A safety shield for use at a face according to claim 4, characterised in that, The servo motor (19) is installed on the bottom side of the supporting roof (4) through the mounting plate, the output end of the servo motor (19) is connected with the adjacent synchronous wheel (17), guide rods (20) are arranged on the two sides of the screw rod (8), the two ends of the guide rod (20) are fixedly connected with the two fixed supports (7), the guide rod (20) penetrates through the movable block (9), the movable block (9) is slidingly matched with the guide rod (20), and the threads of the center threaded holes of the two adjacent movable blocks (9) are oppositely arranged.

6. A safety shield for use at a face according to claim 5, characterised in that, A plurality of universal wheels are installed on the bottom of the moving base (1), the universal wheels are provided with self-locking structures, and the bottom of the lifting platform (3) is fixedly connected with the movable end of the driving mechanism (2).

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