Rapid charging device for blasting construction of hard rock super-large section tunnel

Abstract

The utility model belongs to the technical field of tunnel blasting, and particularly relates to a hard rock super-large section tunnel blasting construction rapid charging device which comprises a charging pipe, a cartridge fixing frame for fixing cartridges is arranged in the charging pipe, the charging pipe and the cartridge fixing frame are detachable, and the cartridge fixing frame comprises a positioning rod and a plurality of restraining rubber rings. The explosive cartridge is fixed through the explosive cartridge fixing frame, the locating rods are symmetrically arranged on the outer side of the explosive cartridge, the restraining rubber ring is arranged on the outer sides of the locating rods in a sleeving mode and wraps the explosive cartridge, and a spring piece tightly attached to the inner wall of the explosive charging pipe is arranged on the outer side of the restraining rubber ring. The explosive cartridge fixing frame is arranged in the explosive charging pipe in a sleeved mode, after hole cleaning is finished, the explosive charging pipe filled with the explosive cartridge is placed in the hole, the explosive charging pipe is pulled out before blasting, and the blasting efficiency can be improved, the operation time can be shortened, and the risk can be reduced through the quick filling function of the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel blasting, and in particular relates to a fast charging device for blasting construction of a hard rock super-large cross-section tunnel. Background Art

[0002] Tunnel drilling and blasting is a commonly used hard rock tunnel construction method. It uses explosives to blast the rock strata on the excavation surface to achieve tunnel excavation and construction. This construction method is usually suitable for large-section tunnels, mine tunnels and other engineering fields. It can effectively speed up the construction progress and reduce construction costs. Tunnel drilling and blasting construction (large-section tunnels, mine tunnels and other fields) requires the use of explosives to blast the rock strata on the excavation surface. Therefore, the speed and quality of charging determine the quality and efficiency of construction.

[0003] When blasting with the prior art, it is necessary to first drill and clean the rock stratum on the excavation surface, and then push the explosives into the hole one by one after the hole is cleaned. When blasting deep holes, due to the large depth of the drilled holes and the large number of charge rolls, it is necessary to push the charge rolls repeatedly, which inevitably results in a low overall charging efficiency. At the same time, some holes are deep, and the staff cannot extend the explosives into the bottom of the blasthole during the charging process. Moreover, when delivering the explosives, the position of the charge roll is also difficult to determine, which can easily affect the blasting effect and may even affect the safety of on-site construction in severe cases. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a rapid charging device for blasting construction of hard rock super-large cross-section tunnels.

[0005] A fast charging device for blasting construction of a hard rock super-large section tunnel comprises a charging tube, a medicine roll fixing frame for fixing a medicine roll is arranged inside the charging tube, the charging tube and the medicine roll fixing frame are detachable, the medicine roll fixing frame comprises a positioning rod and a plurality of restraining rubber rings, the positioning rod is symmetrically arranged on the outside of the medicine roll, the restraining rubber ring is sleeved on the outside of the positioning rod and wraps the medicine roll, and a spring sheet is arranged on the outside of the restraining rubber ring and is closely attached to the inner wall of the charging tube.

[0006] The charge tube is provided with a slide groove along the length direction of the tube, and a sliding latch close to the rock wall is provided on the slide groove. The sliding latch is located on the upper side of the topmost medicine roll and can slide along the slide groove.

[0007] The medicine-filled tube is a transparent plastic tube or transparent glass.

[0008] Scales are arranged on the charge tube bodies at both sides of the charge tube slideway.

[0009] The top of the charge tube is symmetrically provided with a handle.

[0010] The positioning rod is a thin iron wire.

[0011] The positioning rods can be replaced by wall protection sheets.

[0012] The spring piece is in an eight-shaped shape and is made of stainless steel.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model is suitable for various blasting operations that require efficient and accurate charging. The utility model can charge externally while drilling and cleaning the rock layer. The charge roll is fixed by a charge roll fixing frame, and then the charge roll fixing frame is set in the charge tube. After the hole is cleaned, the charge tube loaded with the charge roll is placed in the hole, and the charge tube is pulled out before blasting. The rapid loading function of the utility model device can improve the efficiency of blasting, reduce operation time, and reduce risks.

[0015] 2. The utility model is suitable for continuous charging and intermittent charging. The positioning rod and the constraint rubber ring of the utility model can ensure the stability of the medicine roll and the accuracy of the position of the medicine roll. At the same time, the application is provided with a sliding pin. The sliding pin can ensure the smooth sliding out of the charging tube on the one hand, and on the other hand, the sliding pin always presses against the medicine roll during the process of pulling out the outer tube, and assists the positioning rod and the constraint rubber ring to fix the medicine roll and prevent it from sliding.

[0016] 3. The spring sheet on the restraining rubber ring of the utility model can ensure that the charge tube and the charge roll restraining frame are separated smoothly. At the same time, when the charge tube is separated, the spring sheet can be stuck on the rock wall of the blasthole, which can play a role in positioning and anti-slip.

[0017] 4. The charging tube in the present application is a transparent plastic tube or transparent glass, and a scale is provided on the tube body of the charging tube, so that the operator can clearly observe the filling of the explosives to ensure the accuracy and safety of the charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structural diagram of the utility model charging device;

[0019] Figure 2 A schematic diagram of the structure of the charge tube of the utility model;

[0020] Figure 3 A schematic diagram of the structure of the medicine roll fixing rack of the utility model;

[0021] Figure 4 A schematic diagram of the connection between the restraining rubber ring and the spring sheet of the utility model;

[0022] In the attached figure: 1. charge tube; 2. positioning rod; 3. restraining rubber ring; 4. spring sheet; 5. slide groove; 6. sliding latch; 7. wall protection sheet; 8. medicine roll; 9. handle; 10. scale. DETAILED DESCRIPTION

[0023] The utility model will be described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, a fast charging device for blasting construction of a hard rock super-large cross-section tunnel comprises a charging tube 1, a medicine roll fixing frame for fixing a medicine roll 8 is arranged in the charging tube 1, the charging tube 1 and the medicine roll fixing frame are detachable, the medicine roll 8 fixing frame comprises a positioning rod 2 and a plurality of restraining rubber rings 3, the positioning rod 2 is symmetrically arranged on the outside of the medicine roll 8, the restraining rubber ring 3 is sleeved on the outside of the positioning rod 2 and wraps the medicine roll 8, a spring sheet 4 is arranged on the outside of the restraining rubber ring 3 and is close to the inner wall of the charging tube 1, the spring sheet 4 is in an eight-shaped shape, and the spring sheet 4 is made of stainless steel. After the charging tube 1 is pulled out, the spring sheet 4 outside the restraining rubber ring 3 is clamped on the rock wall of the blast hole, and the spring sheet can play a role in increasing friction and positioning, so as to prevent the medicine roll 8 from sliding out along the blast hole after charging.

[0025] The charging tube 1 is provided with a slide groove 5 along the length direction of the tube, and a sliding pin 6 is provided on the slide groove 5, which is close to the rock wall. The sliding pin 6 is located on the upper side of the topmost medicine roll 8 and can slide along the slide groove. During the process of pulling out the outer tube, the sliding pin 6 always presses against the medicine roll 8 to prevent the medicine roll 8 from sliding; the slide groove 5 provides a sliding path for the sliding pin 6; the length of the charging tube 1 is set according to the depth of the blasting hole.

[0026] The charge tube 1 is a transparent plastic tube or transparent glass, so the operator can clearly observe the filling status of the explosives.

[0027] The charging tube 1 body at both sides of the chute 5 of the charging tube 1 is provided with scales 10, so that the depth of the charging can be monitored at all times.

[0028] A handle 9 is symmetrically provided at the top of the charge tube 1 .

[0029] The positioning rod 2 is a thin iron wire, which connects the medicine rolls 8 in the charge tube 1 into a whole, ensuring the coordination of the overall charge.

[0030] During smooth wall blasting, the positioning rod 2 can be replaced by a wall plate 7, which is a positioning device for the drug roll 8. It can achieve precise positioning of the drug roll 8 and realize various design goals such as spaced charging, non-spaced charging and wall blasting.

[0031] When the utility model is in use, while drilling and cleaning the rock layer, the charging device simultaneously installs the medicine roll 8. The process of installing the medicine roll 8 is as follows: the medicine roll 8 is installed on the inner side of the positioning rod 2 and fixed into a whole by using the constraint rubber ring 3, the spring sheet 4 is installed on the outer side of the constraint rubber ring 3, and then the constrained medicine roll fixing frame and the medicine roll 8 are placed in the charging tube 1. During the installation process, the charging tube 1 enters from the bottom to the top. During the entry process of the charging tube 1, the spring sheet 4 is in a compressed state, and the top of the medicine roll 8 is fixed by the sliding latch 6; at this time, the charging tube 1 is inserted into the blast hole, and then the handle 9 is used to pull out the plastic tube. At this time, the spring sheet 4 is tightly fitted with the inner wall of the blast hole, so as to achieve the purpose of anti-slip and positioning, and realize the rapid filling of explosives.

[0032] Among them, when loading medicine, the medicine roll 8 is installed in the positioning rod 2, and a restraining rubber ring 3 is provided on the top and bottom of the medicine roll 8 to fix it. When loading medicine continuously, the medicine roll 8 in the middle position can be provided with an appropriate restraining rubber ring 3 according to the number of medicine rolls 8; when loading medicine at intervals, a restraining rubber ring 3 is provided on each interval of the medicine roll 8 in the middle position to ensure the firmness of the medicine roll 8.

[0033] When smooth wall protection blasting is required, the positioning rod 2 is replaced with a wall protection sheet 7, which is installed on the side where wall protection is required. The wall protection sheet 7 positions the medicine roll 8, and the restraining rubber ring 3 is used to fix the medicine roll 8.

[0034] The wall of the charge tube 1 is provided with a scale 10, so that the depth and quantity of charge can be monitored at all times, thereby ensuring the accuracy and safety of charge.

Claims

1. A fast charging device for blasting construction of hard rock super-large cross-section tunnels, characterized in that: It includes a charging tube, a medicine roll fixing frame for fixing the medicine roll is arranged inside the charging tube, the charging tube and the medicine roll fixing frame are detachable, the medicine roll fixing frame includes a positioning rod and a plurality of restraining rubber rings, the positioning rod is symmetrically arranged on the outside of the medicine roll, the restraining rubber ring is sleeved on the outside of the positioning rod and wraps the medicine roll, and a spring sheet is arranged on the outside of the restraining rubber ring and is close to the inner wall of the charging tube.

2. The rapid charging device for blasting construction of hard rock super-large cross-section tunnels according to claim 1 is characterized in that: The charge tube is provided with a slide groove along the length direction of the tube, and a sliding latch close to the rock wall is provided on the slide groove. The sliding latch is located on the upper side of the topmost medicine roll and can slide along the slide groove.

3. The rapid charging device for blasting construction of hard rock super-large cross-section tunnel according to claim 1 is characterized in that: The medicine-filled tube is a transparent plastic tube or transparent glass.

4. The rapid charging device for blasting construction of hard rock super-large cross-section tunnel according to claim 1 is characterized in that: Scales are arranged on the charge tube bodies at both sides of the charge tube slideway.

5. The rapid charging device for blasting construction of hard rock super-large cross-section tunnels according to claim 1 is characterized in that: The top of the charge tube is symmetrically provided with a handle.

6. The rapid charging device for blasting construction of hard rock super-large cross-section tunnels according to claim 1 is characterized in that: The positioning rod is a thin iron wire.

7. The rapid charging device for blasting construction of hard rock super-large cross-section tunnels according to claim 1 is characterized in that: The spring piece is in an eight-shaped shape and is made of stainless steel.

8. The rapid charging device for blasting construction of hard rock super-large cross-section tunnels according to claim 1 is characterized in that: The positioning rods can be replaced by wall protection sheets.

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