Explosive fixing structure for foundation pit excavation blasting

Abstract

The utility model relates to the technical field of engineering blasting, and discloses an explosive fixing structure for foundation pit excavation blasting, which comprises a fixing pipe, arc-shaped plates are symmetrically and fixedly connected to the side wall of the fixing pipe, T-shaped grooves are formed in the side walls of the arc-shaped plates, T-shaped blocks are symmetrically and fixedly connected to the side wall of the fixing pipe, and a fixing rod is clamped and limited through clamping blocks. One fixing pipe and the other fixing pipe can be stably clamped, so that the fixing pipes can be stacked, or the T-shaped blocks on the fixing pipes and the T-shaped grooves in the other fixing pipe are in sliding sleeve connection, so that the fixing pipes can be fixedly arranged in the transverse direction and the longitudinal direction; through the arc-shaped plate, the fixing rod, the T-shaped groove and the T-shaped block, the fixing pipe is convenient to install and use and more stable and firmer to use, the practicability of the device is improved, explosives can be better protected through the fixing pipe, and the explosives can be effectively protected against friction damage and position deviation when inserted into a blast hole.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering blasting, in particular to an explosive fixing structure for foundation pit excavation blasting. Background Art

[0002] During the foundation pit excavation and blasting process, the fixing structure of explosives is a very critical link, which is directly related to the accuracy and safety of blasting.

[0003] The traditional fixing method is usually to fix the explosives on bamboo strips at intervals and then insert them into the blasting hole. However, when the explosives enter the hole, the wires may be offset due to collision with the rock wall, resulting in increased errors. In addition, the two sides of the explosives lack protection and are easily damaged when entering the hole, affecting the blasting effect. The explosives are connected to wires. The existing process uses cable ties to fix the leads and explosives, which has cumbersome steps and the rolled strips are easy to slip, causing the leads to fall and the explosives to fail to be detonated. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an explosive fixing structure for foundation pit excavation blasting, which has the advantage of convenient installation and solves the problems in the above background technology.

[0005] The utility model provides the following technical scheme: an explosive fixing structure for foundation pit excavation blasting, comprising a fixing tube, an arc plate symmetrically fixedly connected to the side wall of the fixing tube, a T-shaped groove opened on the side wall of the arc plate, a T-shaped block symmetrically fixedly connected to the side wall of the fixing tube, a wire frame symmetrically fixedly connected at equal intervals on the side edge of the fixing tube, a limiting rod movably connected in the inner wall of the wire frame, the outer end of the limiting rod is fixedly connected to the limiting plate, the inner end of the limiting rod is fixedly connected to the extrusion plate, an extrusion spring is fixedly sleeved on the limiting rod, the upper surface of the fixing tube is symmetrically fixedly connected to the fixing rod, and the lower surface of the fixing tube is symmetrically opened with a clamping groove.

[0006] Preferably, a limiting hole is opened on the side wall of the fixing rod, a spring cavity is opened in the inner wall of the clamping groove, the spring cavity is connected with the clamping groove through the cavity opening, a reset spring is fixedly connected to the inner wall of the spring cavity, and the other end of the reset spring is fixedly connected to the clamping block.

[0007] Preferably, the side wall of the clamping block is slidably connected to the inner wall of the cavity opening, the inner end of the clamping block is slidably connected to the inner wall of the spring cavity and abuts against the cavity opening, and the outer end of the clamping block is configured as a round surface.

[0008] Preferably, the T-block can be slidably connected to the inner wall of the T-slot, the fixing rod can be slidably connected to the inner wall of the clamping slot, and the clamping block corresponds to the limiting hole.

[0009] Preferably, two ends of the extrusion spring are respectively connected to the inner wall of the lead frame and the outer wall of the extrusion plate.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The fixing rod is clamped and limited by the clamping block, so that the fixing pipe can be stably clamped with another fixing pipe, so that the fixing pipes can be stacked, or the T-block on the fixing pipe is slidably sleeved with the T-slot on another fixing pipe so that the fixing pipes can be fixedly arranged horizontally and vertically. The arc plate, the fixing rod, the T-slot and the T-block make the fixing pipe easy to install and use, more stable and firm to use, and improve the practicality of the device. The fixing pipe can better protect the explosives, and can effectively protect the explosives from friction damage and position displacement when inserted into the blasting hole.

[0012] 2. Pull the limit plate to pass the lead through the wire frame, loosen the limit plate, compress the extrusion spring to generate elastic force, and the extrusion spring squeezes the extrusion plate, so that the extrusion plate fixes the lead. The extrusion spring generates elastic force on the extrusion plate to fix the lead, so as to prevent the explosives and the lead from falling due to collision when inserted into the blasting hole, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from top view;

[0014] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 4 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0017] Figure 5 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0018] Figure 6 This is a schematic diagram of the horizontal stacking assembly structure of the utility model;

[0019] Figure 7 It is a schematic diagram of the longitudinal stacking assembly structure of the utility model.

[0020] In the figure: 1. fixing tube; 2. reset spring; 3. arc plate; 4. fixing rod; 5. T-slot; 6. T-block; 7. wire frame; 8. limiting rod; 9. extrusion spring; 10. limiting plate; 11. extrusion plate; 12. clamping groove; 13. spring cavity; 14. clamping block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 2 , an explosive fixing structure for foundation pit excavation blasting, comprising a fixing tube 1, an arc plate 3 is symmetrically fixedly connected to the side wall of the fixing tube 1, a T-shaped slot 5 is provided on the side wall of the fixing tube 1, a T-shaped block 6 is symmetrically fixedly connected to the side wall of the fixing tube 1, a wire frame 7 is symmetrically fixedly connected to the side edge of the fixing tube 1 at equal intervals, a limiting rod 8 is movably connected in the inner wall of the wire frame 7, the outer end of the limiting rod 8 is fixedly connected to the limiting plate 10, the inner end of the limiting rod 8 is fixedly connected to the extrusion plate 11, an extrusion spring 9 is fixedly sleeved on the limiting rod 8, a fixing rod 4 is symmetrically fixedly connected to the upper surface of the fixing tube 1, and a clamping groove 12 is symmetrically provided on the lower surface of the fixing tube 1, the fixing tube 1 is convenient to install and use through the arc plate 3, the fixing rod 4, the T-shaped slot 5 and the T-shaped block 6, the fixing tube 1 is convenient to install and use, more stable and firm to use, and the practicability of the device is improved, and the fixing tube 1 can better protect the explosive, and can effectively protect the explosive from friction damage and position displacement when inserted into the blasting hole;

[0023] See also Figure 3-Figure 4 A limiting hole is provided on the side wall of the fixing rod 4, a spring cavity 13 is provided in the inner wall of the clamping groove 12, the spring cavity 13 is connected with the clamping groove 12 through the cavity opening, a reset spring 2 is fixedly connected to the inner wall of the spring cavity 13, and the other end of the reset spring 2 is fixedly connected to the clamping block 14, the limiting plate 10 is pulled to pass the lead through the wire frame 7, the limiting plate 10 is released, the squeezing spring 9 is compressed to generate elastic force, the squeezing spring 9 squeezes the squeezing plate 11, so that the squeezing plate 11 fixes the lead, and the squeezing spring 9 generates elastic force to fix the lead on the squeezing plate 11 to prevent the explosive and the lead from falling due to collision when inserted into the blasting hole, thereby improving the stability of the device;

[0024] The side wall of the clamping block 14 is slidably connected to the inner wall of the cavity opening, the inner end of the clamping block 14 is slidably connected to the inner wall of the spring cavity 13 and abuts against the cavity opening, and the outer end of the clamping block 14 is set as a round surface. The outer end of the clamping block 14 is set as a round surface so that the fixing rod 4 can smoothly squeeze the clamping block 14 and facilitate disassembly;

[0025] See also Figure 5-Figure 7The T-block 6 can be slidably connected to the inner wall of the T-slot 5, the fixing rod 4 can be slidably connected to the inner wall of the clamping groove 12, the clamping block 14 corresponds to the limiting hole, and when the clamping block 14 abuts against the inner wall of the upper end of the clamping groove 12, the clamping block 14 corresponds to the limiting hole, and the reset spring 2 squeezes the clamping block 14 to reset the clamping block 14, so that the fixing rod 4 abuts against the limiting hole, so that the two fixing pipes 1 are smoothly clamped;

[0026] The two ends of the squeezing spring 9 are respectively connected to the inner wall of the lead frame 7 and the outer wall of the squeezing plate 11. The lead wire is passed through the lead frame 7. At this time, the squeezing spring 9 is in a contracted state. The squeezing spring 9 is compressed to generate elastic force. The squeezing spring 9 squeezes the squeezing plate 11, so that the squeezing plate 11 fixes the lead wire.

[0027] Working principle: When the device is used, the explosive is clamped into the fixed tube 1, and the fixed rod 4 at the upper end of the fixed tube 1 can be sleeved into the clamping groove 12 at the lower end of the other fixed rod 4, and the fixed rod 4 squeezes the clamping block 14, and the clamping block 14 is compressed. When the clamping block 14 is against the inner wall of the upper end of the clamping groove 12, the clamping block 14 corresponds to the limiting hole, and the reset spring 2 squeezes the clamping block 14 to reset the clamping block 14, so that the fixed rod 4 is against the limiting hole, and the fixed rod 4 is clamped and limited by the clamping block 14, so that the fixed tube 1 and the other fixed tube 1 can be stably connected. The fixed tubes 1 can be stacked with each other, or the T-block 6 on the fixed tube 1 can be slidably connected with the T-slot 5 on another fixed tube 1 so that the fixed tubes 1 can be fixedly arranged horizontally and vertically. The fixed tubes 1 are easy to install and use through the arc plate 3, the fixing rod 4, the T-slot 5 and the T-block 6, and are more stable and firm to use, thereby improving the practicality of the device. The fixed tubes 1 can better protect the explosives, and can effectively protect the explosives from friction damage and position displacement when inserted into the blasting hole;

[0028] Pull the limit plate 10 to pass the lead through the wire frame 7, loosen the limit plate 10, compress the extrusion spring 9 to generate elastic force, and the extrusion spring 9 squeezes the extrusion plate 11, so that the extrusion plate 11 fixes the lead. The extrusion spring 9 generates elastic force on the extrusion plate 11 to fix the lead, so as to prevent the explosive and the lead from falling due to collision when inserted into the blasting hole, thereby improving the stability of the device.

Claims

1. An explosive fixing structure for foundation pit excavation blasting, comprising a fixing pipe (1), characterized in that: The side wall of the fixed tube (1) is symmetrically fixedly connected with an arc plate (3), the side wall of the arc plate (3) is provided with a T-shaped groove (5), the side wall of the fixed tube (1) is symmetrically fixedly connected with a T-shaped block (6), the side edge of the fixed tube (1) is symmetrically fixedly connected with a wire frame (7) at equal intervals, the inner wall of the wire frame (7) is movably connected with a limit rod (8), the outer end of the limit rod (8) is fixedly connected with a limit plate (10), the inner end of the limit rod (8) is fixedly connected with an extrusion plate (11), the limit rod (8) is fixedly sleeved with an extrusion spring (9), the upper surface of the fixed tube (1) is symmetrically fixedly connected with a fixed rod (4), and the lower surface of the fixed tube (1) is symmetrically provided with a clamping groove (12).

2. The explosive fixing structure for foundation pit excavation blasting according to claim 1, characterized in that: A limiting hole is provided on the side wall of the fixing rod (4); a spring cavity (13) is provided in the inner wall of the clamping groove (12); the spring cavity (13) is connected to the clamping groove (12) through a cavity opening; a reset spring (2) is fixedly connected to the inner wall of the spring cavity (13); and a clamping block (14) is fixedly connected to the other end of the reset spring (2).

3. The explosive fixing structure for foundation pit excavation blasting according to claim 2, characterized in that: The side wall of the clamping block (14) is slidably connected to the inner wall of the cavity opening, the inner end of the clamping block (14) is slidably connected to the inner wall of the spring cavity (13) and abuts against the cavity opening, and the outer end of the clamping block (14) is arranged as a round surface.

4. The explosive fixing structure for foundation pit excavation blasting according to claim 3, characterized in that: The T-shaped block (6) can be slidably connected to the inner wall of the T-shaped slot (5), the fixing rod (4) can be slidably connected to the inner wall of the clamping slot (12), and the clamping block (14) corresponds to the limiting hole.

5. The explosive fixing structure for foundation pit excavation blasting according to claim 1, characterized in that: The two ends of the extrusion spring (9) are respectively connected to the inner wall of the lead frame (7) and the outer wall of the extrusion plate (11).

Images