Gas spacer capable of being universally used

Abstract

The utility model relates to a gas spacer capable of being universally used. The gas spacer comprises a spacer body, a guide sleeve arranged at the upper end of the spacer body in a sleeving mode and a supporting frame body connected to the lower end of the spacer body in a clamped mode. The supporting frame body comprises a circular pipe section on the upper portion, a bottom plate arranged at the lower end of the circular pipe section and a connector arranged at the lower end of the bottom plate, and a notch extending downwards is formed in the upper end of the circular pipe section; the spacer body comprises an air bag, an opening rope and an aerosol can arranged in the air bag. An opening rod is arranged on the aerosol can, and the opening rope is connected with the opening rod. The device has the advantages of being convenient to install, capable of preventing clamping, stable in supporting, high in opening success rate and the like, is suitable for various engineering fields such as underground mining and tunnel construction, and improves installation efficiency and operation reliability.

Description

Technical Field

[0001] This utility model relates to a gas spacer, specifically a gas spacer that can be used in all directions. Background Technology

[0002] Drilling and blasting are essential steps in underground mining, highway foundation excavation, and tunnel excavation. To reduce the amount of explosives used, the vibration, and improve explosive utilization during blasting, gas spacers are usually placed in the blast holes. Different applications require different placement orientations for the gas spacers. In open-pit mines, spacers are typically placed downwards; while in underground mines and tunnel construction, upward placement is more common.

[0003] There are two existing methods for opening gas spacers: one is to open them outside the borehole and then place them in position, and the other is to place them in position first and then open them. The first type, opening them outside the borehole, is suitable for larger boreholes because the greater the difference between the spacer's diameter and the borehole diameter, and the slower the spacer's expansion speed, the more time is available for placement. However, in underground and tunnel construction, because boreholes are often smaller in diameter, they can easily become stuck before reaching the intended position. In such cases, the gas spacer stuck in the blast hole needs to be dismantled. Furthermore, when installing gas spacers in small-diameter boreholes, auxiliary jacks are needed for simultaneous installation. During the expansion process, the gas spacer can easily rub against the borehole wall, causing leakage and reducing overall efficiency and material loss. Therefore, this type of opening spacer is not very suitable for underground and tunnel construction. Another type of gas spacer is one that is placed in a predetermined position before being opened. This type of gas spacer is used in downward-facing blast holes and is opened by the pulling force generated by the sudden stop of gravity. However, in underground and tunnel construction, blast holes extend upwards, making it impossible to use this type of gravity-opening gas spacer. Utility Model Content

[0004] The purpose of this invention is to provide a gas spacer that can be used in all directions, in order to solve the technical problems of existing gas spacers being easily jammed or inconvenient to install with the borehole facing upwards when the borehole diameter is small in underground and tunnel construction.

[0005] This utility model is implemented as follows: a gas spacer that can be used in all directions includes: a spacer body, a guide sleeve sleeved on the upper end of the spacer body, and a support frame that is snapped into the lower end of the spacer body; the support frame includes an upper circular pipe section, a base plate provided at the lower end of the circular pipe section, and a connector provided at the lower end of the base plate, and a downwardly extending notch is provided at the upper end of the circular pipe section.

[0006] The spacer body includes an airbag, an opening rope, and an aerosol can disposed inside the airbag; an opening rod is disposed on the aerosol can, and the opening rope is connected to the opening rod.

[0007] Preferably, the upper part of the guide sleeve is conical, and a circular tube is provided at the lower end of the cone.

[0008] Preferably, the aerosol can is disposed downwards at the lower part of the airbag, and a neck section with a reduced diameter is provided at the lower end of the aerosol can, with the upper end of the support frame engaging with the neck section of the aerosol can.

[0009] Preferably, the length of the notch is greater than the length from the neck section of the aerosol can to the lower end of the opening rod.

[0010] Preferably, a through hole is provided on the base plate for the opening rope to pass through, and the through hole is provided at one end opposite to the notch.

[0011] This invention, by incorporating a guide sleeve and a support frame, allows the gas spacer to be installed in boreholes of different directions. This solves the problem of existing spacers easily getting stuck or being inconvenient to install when the borehole is facing upwards, especially in underground and tunnel construction where the borehole diameter is small. The guide sleeve of this invention has a tapered front end, ensuring that no jamming or bumping occurs during installation, regardless of the roughness of the borehole wall, allowing the product to be smoothly installed in the predetermined position. The support frame facilitates cooperation with the push rod during installation and provides support when the gas spacer is pulled open, ensuring that the spacer does not tilt during opening and facilitating opening. This invention employs a design with an angled pull-opening rod, ensuring smooth opening of the aerosol can, improving the success rate of opening, reducing material loss, and improving overall efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. Spacer body, 2. Guide sleeve, 3. Support frame, 4. Airbag, 5. Aerosol can, 6. Opening rod, 7. Opening rope, 8. Circular pipe section, 9. Base plate, 10. Connector. Detailed Implementation

[0014] As shown in Figure 1, the present invention includes a spacer body 1, a guide sleeve 2 is sleeved on the upper end of the spacer body 1, and a support frame 3 is snapped into the lower end of the spacer body 1.

[0015] The outer side of the gas spacer body 1 is an air bladder 4, inside which is an aerosol can 5. An opening rod 6 is mounted on the aerosol can 5, and an opening rope 7 is tied to the opening rod 6. After the gas spacer 1 is placed in the predetermined position, pulling the opening rope 7 opens the aerosol can 5 by pulling the opening rod 6. The end of the aerosol can 5 with the opening rod 6 is positioned downwards at the lower part of the air bladder 4. To avoid leakage due to openings in the air bladder 4, the opening rod 6 is also located inside the air bladder 4. The opening rope 7 is tied to the outside of the air bladder 4 along with the air bladder portion wrapped around the opening rod 6. To facilitate tying and pulling the opening rod 6, it is positioned horizontally, with its outer end protruding from the can body.

[0016] The guide sleeve 2 includes a lower part of a circular tube and a conical upper part with the upper end of the circular tube. Before inflation, the airbag 4 is rolled up / folded, forming multiple layers of airbag walls at its upper and lower ends. In this embodiment, only one layer is shown in the accompanying drawings for ease of observation. Because the rolled-up, multi-layered upper end of the airbag 4 is prone to colliding with the rough borehole wall, the upper end of the airbag 4 is rolled up and inserted into the guide sleeve 2. This conical upper part of the guide sleeve 2 allows the spacer body to move more easily within the borehole, preventing the upper end of the airbag from colliding with the rough borehole wall.

[0017] The upper part of the support frame 3 is a circular tube section 8, with a base plate 9 at the lower end and a connector 10 at the lower end of the base plate. A downward-extending notch is formed at the upper end of the circular tube section 8, allowing the opening rod 6 to pass through. A narrowed neck section 11 is located near the opening rod 6 on the body of the aerosol can 5. The upper end of the circular tube section 8 of the support frame 3 engages with the neck section 11 of the aerosol can. In use, the lower end of the airbag 4 is rolled up and inserted from the upper end of the support frame 3. The opening rod 6 passes through the notch and stops when the upper end of the support frame 3 engages with the neck section of the aerosol can 5. The length of the notch is greater than the length from the neck section of the aerosol can to the lower end of the opening rod. This means that when the upper end of the support frame 3 engages with the neck section of the aerosol can 5, there is still space between the lower end of the opening rod 6 and the lower end of the notch to pull the opening rod 6, ensuring that the aerosol can 5 can be opened normally. Because the circular tube section 8 of the support frame 3 is used to engage the neck section of the aerosol can 5, and the upper end of the spacer body 1 only has the rolled / folded air bladder 4, the guide sleeve 2 is made with a suitable circular tube diameter to ensure that the guide sleeve 2 can fit more tightly onto the upper end of the gas spacer 1. The connector 10 is used to cooperate with the push rod and bear the push force of the push rod. In this embodiment, the connector is a small-diameter circular tube with the opening facing downwards.

[0018] A through hole is provided on the base plate 9 for the opening rope 7 to pass through. The through hole is located at the end opposite to the circular tube section 8, so that when the opening rope 7 is pulled, the opening rope 7 pulls the opening rod 6 diagonally downward. Compared with pulling the opening rod vertically, the diagonal pull of the opening rod 6 in this embodiment is larger, ensuring that the aerosol can 5 can be opened smoothly.

Claims

1. A gas spacer that can be used in all directions, characterized in that, include: The spacer body, the guide sleeve fitted on the upper end of the spacer body, and the support frame snapped into the lower end of the spacer body; the support frame includes an upper circular pipe section, a base plate at the lower end of the circular pipe section, and a connector at the lower end of the base plate, and a downwardly extending notch is provided at the upper end of the circular pipe section. The spacer body includes an airbag, an opening rope, and an aerosol can disposed inside the airbag; an opening rod is disposed on the aerosol can, and the opening rope is connected to the opening rod.

2. The universally usable gas spacer according to claim 1, characterized in that, The upper part of the guide sleeve is conical, and a circular tube is provided at the lower end of the cone.

3. The universally usable gas spacer according to claim 1, characterized in that, The aerosol can is positioned downwards at the lower part of the airbag, and a neck section with a reduced diameter is provided at the lower end of the aerosol can. The upper end of the support frame is engaged with the neck section of the aerosol can.

4. The universally usable gas spacer according to claim 1, characterized in that, The length of the notch is greater than the length from the neck section of the aerosol can to the lower end of the opening lever.

5. The universally usable gas spacer according to claim 1, characterized in that, A through hole is provided on the base plate for the opening rope to pass through, and the through hole is provided at one end opposite to the notch.

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