Outdoor blasting protection device

Abstract

The utility model relates to an open blasting protection device which comprises a protection plate, two cavities are formed in the protection plate, square rods are rotationally connected to the inner top walls of the cavities through bearing seats, lead screws are vertically and rotationally connected to the positions, located on the two opposite sides of the square rods, in the cavities, and an upper plate is jointly in threaded connection with the peripheral faces of the two lead screws. A threaded fixing rod is rotatably arranged at the top of the upper plate in a penetrating mode, a square groove is formed in the top of the threaded fixing rod, the lower half portion of the square rod is slidably inserted into the square groove, and a driving portion is arranged above the upper plate. The utility model relates to the technical field of blasting protection. The protection plate is placed on the ground, the downward protection plate is pressed, then the motor is started, the motor works to drive the threaded fixing rod to move downwards to be inserted into the ground, meanwhile, the threaded fixing rod rotates, soil can return to the ground along the threaded groove in the peripheral side of the threaded fixing rod, and therefore the resistance of inserting the soil into the ground is smaller, and the depth of inserting the soil into the ground is larger; and more labor is saved, and the fixing effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting protection, in particular to an open-air blasting protection device. Background Art

[0002] Blasting is a technology that uses the compression, loosening, destruction, throwing and killing effects produced by the explosion of explosives in air, water, soil and rock media or objects to achieve the desired purpose. Open-air blasting is often used for mining blasting. During the blasting process, there will be impact fragments mixed with dust and gravel falling. Therefore, protective devices need to be set up at the blasting site for workers to avoid.

[0003] After the current protective device is placed on the ground, it is usually fixed by pressing down hard to press the bottom fixing rod into the ground. However, this method is laborious and the depth of insertion into the ground is limited. Therefore, the fixing effect of the protective device is not good and it is easy to move when hit by gravel. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present utility model is to provide an open-air blasting protection device to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A protective device for open-air blasting comprises a protective plate, wherein two cavities are provided in the protective plate, wherein the top wall of the cavity is rotatably connected to a square rod via a bearing seat, wherein lead screws are vertically rotatably connected to opposite sides of the square rod in the cavity, wherein the outer circumferential surfaces of the two lead screws are commonly threadedly connected to an upper plate, wherein a threaded fixing rod is rotatably penetrated through the top of the upper plate, wherein a square groove is provided on the top of the threaded fixing rod, wherein the lower half of the square rod is slidably inserted into the square groove, wherein a driving part is provided above the upper plate, and a through hole is provided on the bottom wall of the cavity, wherein the lower half of the threaded fixing rod passes through the through hole.

[0007] Furthermore, the inner wall of the through hole fits with the outer surface of the threaded fixing rod.

[0008] Furthermore, the bottom of the threaded fixing rod is in an inverted cone shape.

[0009] Furthermore, the driving part includes a motor fixedly connected to the inner wall of the cavity, the output end of the motor is transmission-connected to a worm, the end of the worm away from the motor is rotationally connected to the inner wall of the cavity, the upper half of the outer surface of the lead screw and the upper half of the outer surface of the square rod are both fixedly sleeved with worm wheels, and the worm is meshed with the corresponding three worm wheels.

[0010] Furthermore, a top plate is hinged on the upper half of one side of the protective plate, the thread rotation direction of the upper half and the lower half of the outer circumference of the screw is opposite, and the corresponding two lower halves of the outer circumference of the screw are commonly threadedly connected to a lower plate, the threaded fixing rod passes through the lower plate, and two vertical holes are provided in the lower half of the inner wall of the cavity, and the side wall of the lower plate is hinged with two connecting rods, the connecting rods pass through the corresponding vertical holes, and the end of the connecting rod away from the lower plate is hinged to the top plate.

[0011] Furthermore, the two motors are electrically connected to a PLC controller, and the PLC controller is connected to a control terminal via a wireless signal.

[0012] In summary, the present invention includes at least one of the following beneficial technical effects:

[0013] 1. This is an open-air blasting protection device. The protection plate is placed on the ground and pressed down. Then the motor is started. The motor drives the threaded fixing rod to move downward and insert into the ground. At the same time, the threaded fixing rod rotates, and the soil can return to the ground along the thread groove on the outer peripheral side of the threaded fixing rod. Therefore, the resistance of inserting into the ground is smaller and the depth is greater, which is not only more labor-saving, but also has a better fixing effect;

[0014] 2. This open-air blasting protection device, when the motor drives the threaded fixing rod to be inserted into the ground, the lower plate moves upward, and the top plate is driven to rotate through the connecting rod, so that the top plate becomes horizontal, which can protect the upper part of the staff behind the protection plate, further improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a three-dimensional diagram of an open-air blasting protection device of the present embodiment;

[0017] Figure 2 is a side sectional view of an open-air blasting protection device of the present embodiment;

[0018] Figure 3 It is a partial front cross-sectional view of an open-air blasting protection device of this embodiment.

[0019] In the figure, 1, protective plate; 2, cavity; 3, square rod; 4, screw; 5, upper plate; 6, threaded fixing rod; 7, square groove; 8, driving part; 81, motor; 82, worm; 83, worm wheel; 9, through hole; 10, top plate; 11, lower plate; 12, vertical hole; 13, connecting rod. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Example: Refer to Figures 1 to 3 The utility model discloses an open-air blasting protection device, including a protection plate 1, wherein the protection plate 1 has two cavities 2, wherein the top wall of the cavity 2 is rotatably connected to a square rod 3 through a bearing seat, wherein lead screws 4 are vertically rotatably connected to opposite sides of the square rod 3 in the cavity 2, wherein the outer circumferences of the two lead screws 4 are commonly threadedly connected to an upper plate 5, wherein a threaded fixing rod 6 is rotatably penetrated at the top of the upper plate 5, wherein a square groove 7 is provided at the top of the threaded fixing rod 6, wherein the lower half of the square rod 3 is slidably inserted into the square groove 7, wherein a driving part 8 is provided above the upper plate 5, and a through hole 9 is provided at the bottom wall of the cavity 2, wherein the lower half of the threaded fixing rod 6 passes through the through hole 9.

[0022] In this embodiment, the two cavities 2 are mirror-imaged with respect to the central plane of the protective plate 1. The cross section of the square rod 3 is a square. The top end of the lead screw 4 is rotatably connected to the top wall of the cavity 2, and the bottom end of the lead screw 4 is rotatably connected to the bottom wall of the cavity 2. The driving unit 8 is used to drive the two lead screws 4 to rotate synchronously, and at the same time drive the square rod 3 to rotate.

[0023] When the square rod 3 rotates, the outer wall of the square rod 3 fits with the inner wall of the square groove 7, so the square rod 3 drives the threaded fixing rod 6 to rotate synchronously. When the two lead screws 4 rotate synchronously, the upper plate 5 is driven to move downward, and the upper plate 5 drives the threaded fixing rod 6 to move downward, and the part of the square rod 3 exposed from the square groove 7 gradually increases. Therefore, when the driving part 8 is working, it drives the threaded fixing rod 6 to rotate while moving downward, and the threaded fixing rod 6 passes through the through hole 9 to contact the ground and drill into the ground, thereby fixing the protective plate 1 on the ground. After the protective plate 1 is fixed, the square rod 3 is not completely separated from the corresponding square groove 7.

[0024] In a further preferred embodiment of the present invention, Figure 3 As shown, the inner wall of the through hole 9 fits with the outer surface of the threaded fixing rod 6 .

[0025] In this embodiment, the through hole 9 can limit the lower half of the threaded fixing rod 6, and cooperate with the upper plate 5 to limit the upper half of the threaded fixing rod 6 to prevent the threaded fixing rod 6 from tilting and deforming.

[0026] In a further preferred embodiment of the present invention, Figure 3 As shown, the bottom of the threaded fixing rod 6 is in an inverted cone shape.

[0027] In this embodiment, the bottom of the threaded fixing rod 6 is in an inverted cone shape, so the threaded fixing rod 6 has less resistance when drilling into the ground soil, thereby reducing energy consumption.

[0028] In a further preferred embodiment of the present invention, Figure 3 As shown, the driving part 8 includes a motor 81 fixedly connected to the inner wall of the cavity 2, and the output end of the motor 81 is transmission-connected to a worm 82, and one end of the worm 82 away from the motor 81 is rotationally connected to the inner wall of the cavity 2, and the upper half of the outer surface of the lead screw 4 and the upper half of the outer surface of the square rod 3 are fixedly sleeved with worm wheels 83, and the worm 82 is meshed with the corresponding three worm wheels 83.

[0029] In this embodiment, the motor 81 drives the worm 82 to rotate, and the worm 82 drives the three worm wheels 83 to rotate, thereby driving the two lead screws 4 to rotate synchronously and the square rod 3 to rotate.

[0030] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the upper half of one side of the protective plate 1 is hinged with a top plate 10, the thread rotation direction of the upper half and the lower half of the outer circumference of the screw 4 is opposite, and the lower halves of the outer circumference of the two corresponding screws 4 are commonly threadedly connected with a lower plate 11, the threaded fixing rod 6 passes through the lower plate 11, and two vertical holes 12 are provided in the lower half of the inner wall of the cavity 2. The side wall of the lower plate 11 is hinged with two connecting rods 13, the connecting rods 13 pass through the corresponding vertical holes 12, and the end of the connecting rod 13 away from the lower plate 11 is hinged to the top plate 10.

[0031] In this embodiment, since the threads of the upper and lower parts of the outer circumference of the screw 4 are in opposite directions, the upper plate 5 and the lower plate 11 move in opposite directions when the screw 4 rotates. In the initial state, the threaded fixing rod 6 is located in the cavity 2, and the angle between the top plate 10 and the protective plate 1 is small (such as Figure 2 as shown).

[0032] When the motor 81 is working, the threaded fixing rod 6 rotates while moving downward and inserted into the ground to fix the protective plate 1. At the same time, the screw 4 drives the lower plate 11 to move upward, and the lower plate 11 drives the connecting rod 13 to move, and the connecting rod 13 drives the top plate 10 to rotate. When the protective plate 1 is fixed, the top plate 10 is in a horizontal state, and the staff can hide under the top plate 10, further improving the protection effect of the device.

[0033] In a further preferred embodiment of the present invention, Figure 3 As shown, both motors 81 are electrically connected to the PLC controller, and the PLC controller is connected to the control terminal via wireless signals.

[0034] In this embodiment, the control terminal can be handheld by the staff, or it can be installed on the side of the protective plate 1 close to the top plate 10. After placing the protective plate 1 on the ground and pressing the protective plate 1 downward, the staff starts the PLC controller through the control terminal, and the PLC controller controls the two motors 81 to work synchronously.

[0035] The implementation principle of the above embodiment is:

[0036] When blasting protection is required, the protective plate 1 is placed on the ground and pressed downward. At the same time, two motors 81 are started to work synchronously through the control terminal. The motor 81 drives the worm 82 to rotate, and the worm 82 drives the three worm wheels 83 to rotate, thereby driving the two lead screws 4 to rotate synchronously and the square rod 3 to rotate. The lead screw 4 drives the upper plate 5 to move downward, and the upper plate 5 drives the threaded fixing rod 6 to move downward. The threaded fixing rod 6 contacts the ground, and the square rod 3 rotates to drive the threaded fixing rod 6 to rotate. Therefore, the threaded fixing rod 6 rotates while moving downward and drills into the ground, thereby fixing the protective plate 1 on the ground. At the same time, the lead screw 4 rotates to drive the lower plate 11 to move upward, and the lower plate 11 drives the connecting rod 13 to move, and the connecting rod 13 drives the top plate 10 to rotate, and finally the top plate 10 is in a horizontal state. At this time, the staff can hide behind the protective plate 1 and under the top plate 10 to prevent the impact of flying stones.

[0037] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An open-air blasting protection device, comprising a protection plate (1), characterized in that: The protective plate (1) has two cavities (2) formed therein, the top wall of the cavity (2) being rotatably connected to a square rod (3) via a bearing seat, lead screws (4) being vertically rotatably connected to opposite sides of the square rod (3) in the cavity (2), the outer circumferences of the two lead screws (4) being commonly threadedly connected to an upper plate (5), a threaded fixing rod (6) being rotatably penetrated through the top of the upper plate (5), a square groove (7) being formed at the top of the threaded fixing rod (6), the lower half of the square rod (3) being slidably inserted into the square groove (7), a driving part (8) being provided above the upper plate (5), a through hole (9) being formed at the bottom wall of the cavity (2), the lower half of the threaded fixing rod (6) passing through the through hole (9).

2. The open-air blasting protection device according to claim 1, characterized in that: The inner wall of the through hole (9) fits the outer surface of the threaded fixing rod (6).

3. The open-air blasting protection device according to claim 2, characterized in that: The bottom of the threaded fixing rod (6) is in an inverted cone shape.

4. The open-air blasting protection device according to claim 3, characterized in that: The driving part (8) comprises a motor (81) fixedly connected to the inner wall of the cavity (2); the output end of the motor (81) is drivingly connected to a worm (82); one end of the worm (82) away from the motor (81) is rotatably connected to the inner wall of the cavity (2); an upper half of the outer circumferential surface of the lead screw (4) and an upper half of the outer surface of the square rod (3) are fixedly sleeved with worm wheels (83); the worm (82) is meshed with three corresponding worm wheels (83).

5. The open-air blasting protection device according to claim 4, characterized in that: The upper half of one side of the protective plate (1) is hingedly connected to a top plate (10), the upper half of the outer circumference of the lead screw (4) has a thread rotation direction opposite to that of the lower half, and the corresponding lower halves of the outer circumference of the two lead screws (4) are commonly threadedly connected to a lower plate (11), the threaded fixing rod (6) passes through the lower plate (11), the lower half of the inner wall of the cavity (2) is provided with two vertical holes (12), the side wall of the lower plate (11) is hingedly connected to two connecting rods (13), the connecting rods (13) pass through the corresponding vertical holes (12), and the end of the connecting rod (13) away from the lower plate (11) is hingedly connected to the top plate (10).

6. The open-air blasting protection device according to claim 5, characterized in that: The two motors (81) are both electrically connected to a PLC controller, and the PLC controller is connected to a control terminal via a wireless signal.

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