Blasting spacer with multi-layer protection bag structure

Abstract

The utility model belongs to the technical field of blasting spacers, and particularly relates to a blasting spacer with a multi-layer protection bag structure, which comprises a mounting frame, a two-way screw penetrates through the inner wall of the mounting frame, the top end of the two-way screw is in threaded connection with a chassis, and the top end of the chassis is fixedly connected with an outer sealing ring. By arranging the outer protection bag and the inner protection bag, when the two-way screw rotates, the bottom disc and the top disc are driven to relatively slide along the inner wall of the mounting frame, the bottom disc slides to drive the outer sealing ring to be attached to the edge of the outer wall of the outer protection bag, and therefore the outer protection bag is driven to be tightly attached to the outer wall of the mounting frame; the top disc slides to drive the inner sealing ring to be attached to the edge of the outer wall of the inner protection bag, so that the inner protection bag is driven to be tightly attached to the outer wall of the installation frame, installation of the outer protection bag and the inner protection bag is achieved, deformation of the protection bags during inflation is avoided, and the stability of the air inflation bag is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of blasting spacers, specifically a blasting spacer with a multi-layer protective bag structure. Background Technology

[0002] Air-spaced spacers for blasting can reduce explosive consumption, provide shock absorption and waterproofing, and reduce foundation damage; they can also reduce the blast pressure inside the borehole, reduce or even avoid rock and ore impact and crushing caused by coupled charges, expand the fracture zone, and improve the effective utilization rate of explosive blasting energy, thereby reducing explosive consumption. In addition, due to the increased charge position, the blast pressure distribution along the borehole axis is more uniform, which can effectively overcome foundation damage and reduce the rate of large blasting fragments, creating favorable conditions for subsequent processes such as shoveling. This is a new type of device suitable for air-spaced charging at any position in deep-hole blasting holes in open-pit mines.

[0003] However, when the aforementioned spacers are in use, the protective bags are prone to deformation when inflated, making it impossible to effectively space the blast holes. Summary of the Invention

[0004] The purpose of this invention is to provide a blasting spacer with a multi-layer protective bag structure to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a blasting spacer with a multi-layer protective bag structure, including a mounting frame, a bidirectional screw penetrating the inner wall of the mounting frame, a base plate threaded to the top of the bidirectional screw, an outer sealing ring fixedly connected to the top of the base plate, an outer protective bag tightly pressed between the outer sealing ring and the mounting frame, an anti-slip washer provided on the outer wall of the outer protective bag, a top plate threaded to the bottom of the bidirectional screw, an inner sealing ring fixedly connected to the bottom of the top plate, an inner protective bag tightly pressed between the inner sealing ring and the mounting frame, an air vent provided at the bottom of the inner protective bag, an air cylinder fixedly connected to the bottom of the mounting frame, an air inlet fixedly connected to the bottom of the air cylinder, a positioning frame fixedly connected to the bottom of the outer protective bag, and a counterweight fixedly connected to the bottom of the positioning frame.

[0006] Based on the above structure, when the bidirectional screw rotates, it causes the base and top plate to slide relative to each other along the inner wall of the mounting frame. The sliding of the base causes the outer sealing ring to fit against the outer edge of the outer protective bag, thereby causing the outer protective bag to fit tightly against the outer wall of the mounting frame. At the same time, the sliding of the top plate causes the inner sealing ring to fit against the outer edge of the inner protective bag, thereby causing the inner protective bag to fit tightly against the outer wall of the mounting frame. This realizes the installation of the outer and inner protective bags, avoids the deformation of the protective bag during inflation, and improves the stability of this utility model.

[0007] Preferably, the cross-section of the mounting frame is I-shaped, and the central axes of the chassis and the top plate coincide. In this embodiment, when the bidirectional screw rotates, it drives the chassis and the top plate to slide relative to each other along the inner wall of the mounting frame, thereby realizing the control operation of the relative sliding of the chassis and the top plate.

[0008] Preferably, the outer protective bag forms a sealing structure with the mounting frame through the outer sealing ring, and the anti-slip gaskets are distributed equidistantly along the outer wall of the outer protective bag. In this embodiment, the sliding of the chassis causes the outer sealing ring to fit against the edge of the outer wall of the outer protective bag, thereby causing the outer protective bag to fit tightly against the outer wall of the mounting frame. In this embodiment, the sliding of the top plate causes the inner sealing ring to fit against the edge of the outer wall of the inner protective bag, thereby causing the inner protective bag to fit tightly against the outer wall of the mounting frame.

[0009] Preferably, the inner protective bag forms a sealing structure with the mounting frame through the inner sealing ring. In this embodiment, when the connecting ring moves, it drives the support plate to rotate against the elastic force of the positioning spring. When the positioning post at one end of the support plate is in contact with the inner wall of the blast hole, the positioning spring drives the support plate to be positioned by its own elastic force, thereby positioning the positioning frame and preventing the present invention from slipping.

[0010] Preferably, a positioning spring is screwed onto the inner wall of the positioning frame, and a connecting block is fixedly connected to one end of the positioning spring. A support plate that is screwed onto the outer wall of the connecting block and screwed onto the inner wall of the positioning frame is screwed onto the outer wall of the support plate. A connecting ring is fixedly connected to the outer wall of the support plate, and a positioning post is fixedly connected to one end of the support plate. In this embodiment, when the connecting ring moves, it drives the support plate to rotate against the elastic force of the positioning spring. When the positioning post at one end of the support plate is in contact with the inner wall of the borehole, the positioning spring drives the support plate to be positioned by its own elastic force, thereby positioning the positioning frame and preventing the present invention from slipping.

[0011] Preferably, the positioning frame is provided in four sets, and the four sets of positioning frames are distributed in a circle at equal angles about the central axis of the outer protective bag. In this embodiment, by providing four sets of positioning frames, it is beneficial to stably position the present invention.

[0012] Preferably, the support plate is inclined. In this embodiment, it is convenient for the staff to place the blasting spacer in the blast hole smoothly by using the counterweight. When the connecting ring moves, it drives the support plate to rotate against the elastic force of the positioning spring. When the positioning post at one end of the support plate is in contact with the inner wall of the blast hole, the positioning spring drives the support plate to be positioned by its own elastic force.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting an outer protective bag and an inner protective bag, allows the base plate and top plate to slide relative to each other along the inner wall of the mounting frame when the bidirectional screw rotates. The sliding of the base plate causes the outer sealing ring to fit against the outer edge of the outer protective bag, thereby causing the outer protective bag to fit tightly against the outer wall of the mounting frame. At the same time, the sliding of the top plate causes the inner sealing ring to fit against the outer edge of the inner protective bag, thereby causing the inner protective bag to fit tightly against the outer wall of the mounting frame. This achieves the installation of the outer and inner protective bags, prevents the protective bags from deforming during inflation, and improves the stability of this utility model.

[0015] 2. By setting a positioning post, when the connecting ring moves, it drives the support plate to rotate against the elastic force of the positioning spring. When the positioning post at one end of the support plate is in contact with the inner wall of the blast hole, the positioning spring drives the support plate to be positioned by its own elastic force, thereby positioning the positioning frame and preventing the present invention from slipping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the outer protective bag and the inner protective bag of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure of the support plate of this utility model.

[0020] In the diagram: 1. Mounting frame; 2. Double-acting screw; 3. Chassis; 4. Outer sealing ring; 5. Outer protective bag; 6. Anti-slip washer; 7. Top plate; 8. Inner sealing ring; 9. Inner protective bag; 10. Vent; 11. Air cylinder; 12. Air inlet; 13. Positioning frame; 14. Counterweight; 15. Positioning spring; 16. Connecting block; 17. Support plate; 18. Connecting ring; 19. Positioning post. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Figure 4 The present invention will be described in further detail below.

[0022] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] This utility model discloses a blasting spacer with a multi-layer protective bag structure, including a mounting frame 1. A bidirectional screw 2 runs through the inner wall of the mounting frame 1. A base plate 3 is threaded to the top of the bidirectional screw 2. An outer sealing ring 4 is fixedly connected to the top of the base plate 3. An outer protective bag 5 is tightly pressed between the outer sealing ring 4 and the mounting frame 1. An anti-slip washer 6 is provided on the outer wall of the outer protective bag 5. A top plate 7 is threaded to the bottom of the bidirectional screw 2. An inner sealing ring 8 is fixedly connected to the bottom of the top plate 7. An inner protective bag 9 is tightly pressed between the inner sealing ring 8 and the mounting frame 1. A vent 10 is provided at the bottom of the inner protective bag 9. An air cylinder 11 is fixedly connected to the bottom of the mounting frame 1. An air inlet 12 is fixedly connected to the bottom of the air cylinder 11. A positioning frame 13 is fixedly connected to the bottom of the outer protective bag 5. A counterweight 14 is fixedly connected to the bottom of the positioning frame 13.

[0024] Based on the above structure, when the bidirectional screw 2 rotates, it drives the base plate 3 and the top plate 7 to slide relative to each other along the inner wall of the mounting frame 1. The sliding of the base plate 3 causes the outer sealing ring 4 to fit against the outer edge of the outer protective bag 5, thereby causing the outer protective bag 5 to fit tightly against the outer wall of the mounting frame 1. At the same time, the sliding of the top plate 7 causes the inner sealing ring 8 to fit against the outer edge of the inner protective bag 9, thereby causing the inner protective bag 9 to fit tightly against the outer wall of the mounting frame 1. This realizes the installation of the outer protective bag 5 and the inner protective bag 9, avoids the protective bag from deforming when inflated, and improves the stability of this utility model.

[0025] In one embodiment, the cross-section of the mounting frame 1 is I-shaped, and the central axes of the chassis 3 and the top plate 7 coincide.

[0026] In this embodiment, when the bidirectional screw 2 rotates, it drives the chassis 3 and the top plate 7 to slide relative to each other along the inner wall of the mounting frame 1, thereby realizing the control operation of the relative sliding of the chassis 3 and the top plate 7.

[0027] In one embodiment, the outer protective bag 5 forms a sealing structure with the mounting frame 1 through the outer sealing ring 4, and the anti-slip gaskets 6 are distributed at equal intervals along the outer wall of the outer protective bag 5.

[0028] In this embodiment, the chassis 3 slides to cause the outer sealing ring 4 to fit against the outer edge of the outer protective bag 5, thereby causing the outer protective bag 5 to fit tightly against the outer wall of the mounting frame 1.

[0029] In one embodiment, the inner protective bag 9 forms a sealing structure with the mounting frame 1 through the inner sealing ring 8.

[0030] In this embodiment, the top plate 7 slides to cause the inner sealing ring 8 to fit against the outer edge of the inner protective bag 9, thereby causing the inner protective bag 9 to fit tightly against the outer wall of the mounting frame 1.

[0031] In one embodiment, a positioning spring 15 is screwed onto the inner wall of the positioning frame 13, and a connecting block 16 is fixedly connected to one end of the positioning spring 15. A support plate 17 that is screwed onto the outer wall of the connecting block 16 is screwed onto the inner wall of the positioning frame 13. A connecting ring 18 is fixedly connected to the outer wall of the support plate 17, and a positioning post 19 is fixedly connected to one end of the support plate 17.

[0032] In this embodiment, when the connecting ring 18 moves, it drives the support plate 17 to rotate against the elastic force of the positioning spring 15. When the positioning post 19 at one end of the support plate 17 is in contact with the inner wall of the borehole, the positioning spring 15 drives the support plate 17 to be positioned by its own elastic force, thereby positioning the positioning frame 13 and preventing the present invention from slipping.

[0033] In one embodiment, the positioning frame 13 is provided in four sets, and the four sets of positioning frames 13 are distributed in an equal-angled circular pattern about the central axis of the outer protective bag 5.

[0034] In this embodiment, by setting four sets of positioning frames 13, it is beneficial to achieve stable positioning of this utility model.

[0035] In one embodiment, the support plate 17 is inclined.

[0036] In this embodiment, it is convenient for workers to place the blasting spacer smoothly into the blast hole using the counterweight 14. When the connecting ring 18 moves, it drives the support plate 17 to rotate against the elastic force of the positioning spring 15. When the positioning post 19 at one end of the support plate 17 is in contact with the inner wall of the blast hole, the positioning spring 15 drives the support plate 17 to be positioned by its own elastic force.

[0037] In this embodiment, the blasting spacer with a multi-layer protective bag structure is used as follows: First, the outer protective bag 5 and the inner protective bag 9 are installed. The operator rotates the bidirectional screw 2. When the bidirectional screw 2 rotates, it causes the base plate 3 and the top plate 7 to slide relative to each other along the inner wall of the mounting frame 1. The sliding of the base plate 3 causes the outer sealing ring 4 to fit against the outer edge of the outer protective bag 5, thereby causing the outer protective bag 5 to fit tightly against the outer wall of the mounting frame 1. At the same time, the sliding of the top plate 7 causes the inner sealing ring 8 to fit against the outer edge of the inner protective bag 9, thereby causing the inner protective bag 9 to fit tightly against the outer wall of the mounting frame 1. This achieves the installation of the outer protective bag 5 and the inner protective bag 9, avoids deformation of the protective bags during inflation, and improves the stability of this utility model.

[0038] Next, the workers placed the blasting spacer in the blast hole using the counterweight 14. Then, the workers pulled the connecting ring 18 with a pull wire. When the connecting ring 18 moved, it caused the support plate 17 to rotate against the elastic force of the positioning spring 15. When the positioning post 19 at one end of the support plate 17 was in contact with the inner wall of the blast hole, the positioning spring 15 used its own elastic force to drive the support plate 17 to be positioned, thereby positioning the positioning frame 13 and preventing the utility model from slipping.

[0039] Finally, the air cylinder 11 sprays high-pressure gas from the air inlet 12 and inflates the inner protective bag 9 and outer protective bag 5 through the air vent 10. The outer protective bag 5 expands as it inflates, causing the outer wall of the outer protective bag 5 to fit against the inner wall of the borehole, which helps to improve the stability of the fit of the outer protective bag 5.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blasting spacer with a multi-layer protective bag structure, characterized in that, The system includes a mounting frame (1), with a bidirectional screw (2) penetrating its inner wall. A base plate (3) is threaded to the top of the bidirectional screw (2). An outer sealing ring (4) is fixedly connected to the top of the base plate (3). An outer protective bag (5) is tightly pressed between the outer sealing ring (4) and the mounting frame (1). An anti-slip washer (6) is provided on the outer wall of the outer protective bag (5). A top plate (7) is threaded to the bottom of the bidirectional screw (2). The bottom of the top plate (7) is fixedly connected to the base plate. An inner sealing ring (8) is fixedly connected to the mounting frame (1), and an inner protective bag (9) is tightly pressed between the inner sealing ring (8) and the mounting frame (1). A vent (10) is provided at the bottom end of the inner protective bag (9). An air cylinder (11) is fixedly connected to the bottom end of the mounting frame (1), and an air inlet (12) is fixedly connected to the bottom end of the air cylinder (11). A positioning frame (13) is fixedly connected to the bottom end of the outer protective bag (5), and a counterweight (14) is fixedly connected to the bottom end of the positioning frame (13).

2. The blasting spacer with a multi-layer protective bag structure according to claim 1, characterized in that: The cross-section of the mounting frame (1) is I-shaped, and the central axes of the chassis (3) and the top plate (7) coincide.

3. The blasting spacer with a multi-layer protective bag structure according to claim 1, characterized in that: The outer protective bag (5) forms a sealing structure with the mounting frame (1) through the outer sealing ring (4), and the anti-slip gaskets (6) are distributed at equal intervals along the outer wall of the outer protective bag (5).

4. The blasting spacer with a multi-layer protective bag structure according to claim 1, characterized in that: The inner protective bag (9) forms a sealed structure with the mounting frame (1) through the inner sealing ring (8).

5. The blasting spacer with a multi-layer protective bag structure according to claim 1, characterized in that: A positioning spring (15) is screwed onto the inner wall of the positioning frame (13). A connecting block (16) is fixedly connected to one end of the positioning spring (15). A support plate (17) that is screwed onto the outer wall of the connecting block (16) is screwed onto the inner wall of the positioning frame (13). A connecting ring (18) is fixedly connected to the outer wall of the support plate (17). A positioning post (19) is fixedly connected to one end of the support plate (17).

6. The blasting spacer with a multi-layer protective bag structure according to claim 5, characterized in that: The positioning frame (13) is provided in four sets, and the four sets of positioning frames (13) are distributed in a circular shape with equal angles about the central axis of the outer protective bag (5).

7. The blasting spacer with a multi-layer protective bag structure according to claim 5, characterized in that: The support plate (17) is inclined.

Images