An automatic filling device for engineering blasting holes

Abstract

This invention discloses an automatic filling device for blast holes in engineering blasting, belonging to the field of engineering blasting. The device is installed on a rock drilling rig or a charging rig as a filling structure. The device includes a shell, a mud tube, baffles, etc. A filling port is provided at the top of the shell, the size of which corresponds to the size of the mud tube. A power mechanism is connected to the transmission rod via a power rod, a power wheel, a transmission bearing assembly, cam I, and cam II, providing rotational power to the transmission rod. The upper end of a pneumatic rod is connected to the shell of the transmission bearing assembly, and the lower end is connected to the shell, providing power for the up-and-down movement of the transmission rod. A front bearing assembly is located near the filling port and nested inside the shell, mounted on the transmission rod via an internal linear bearing. During operation, the advantages of this invention are its simple structure and operation, automation of blast hole filling, saving filling costs and improving charging efficiency.

Description

Technical Field

[0001] This invention relates to an automatic filling device for blasting boreholes in engineering blasting, belonging to the field of engineering blasting. Background Technology

[0002] In my country, blasting operations are involved in numerous industries, and engineering blasting technology is increasingly widely applied in quarries, mines, bridges, tunnels, and demolition. During blasting operations, the boreholes need to be plugged after the explosive charge is loaded, and the quality of this plugging directly affects the blasting effect. If the plugging is too soft, too much explosive energy will dissipate into the air, leading to borehole punching, poor blasting results, and a high rate of large fragments. Furthermore, good borehole plugging quality can, to some extent, reduce explosive consumption per unit volume.

[0003] Currently, in most blasting and tamping operations, workers need to manually or with the aid of some tools to tamp the blast holes. Because the tamping process is labor-intensive and inefficient, it affects the quality of the tamping. This invention discloses a device that can solve the problems of versatility, high efficiency, and economy in automatically tamping blast holes in engineering blasting. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic filling device for blast holes in engineering blasting operations, which can be used in conjunction with a charging trolley or a rock drilling trolley to provide an automated filling device for the blast hole filling process in engineering blasting operations.

[0005] The technical solution adopted by this invention to solve its technical problem is: an automatic filling device for engineering blasting boreholes, including a shell 1, a mud pipe 2, a baffle 3, a pipe housing cover 4, a transmission rod 6, a filling port 7, a front bearing assembly 8, a pneumatic rod 9, a cam I 10, a cam II 11, a power wheel 12, a transmission bearing assembly 13, a power rod 14, a spring 15, a positioning bearing 16, and a vent hole 31; the upper part of the shell 1 is provided with a filling port 7, the size of which corresponds to the mud pipe 2, and the mud pipe 2 is inserted into the shell 1 through the filling port 7; the top of the mud pipe 2 is provided with a baffle 3, the top of which is connected to the transmission rod 6. The moving rod 6 is connected, and the filling port 7 is provided with a tube cover 4; the power mechanism is connected to the transmission rod 6 through the power rod 14, the power wheel 12, the transmission bearing assembly 13, the cam I 10, and the cam II 11, providing rotational power to the transmission rod 6; the upper end of the pneumatic rod 9 is connected to the outer shell of the transmission bearing assembly 13, and the lower end is connected to the outer shell 1, providing the transmission rod 6 with the power for up and down movement; the front bearing assembly 8 is located at one end of the filling port 7 and nested in the tail of the outer shell 1, and is sleeved on the transmission rod through the internal linear bearing 27; the two ends of the spring 15 are fixed to the outer shell of the transmission bearing assembly and the positioning bearing 16, respectively.

[0006] In this embodiment, the diameter of the outer shell 1 is slightly smaller than the diameter of the drill hole, and the head has an annular bayonet.

[0007] In this embodiment, the tube cover 4 is connected to the edge of the filling port 7 via a hinge 5.

[0008] The baffle 3 described in this embodiment has a vent 31 inside.

[0009] In this embodiment, the cam I 10 is fitted onto the transmission rod 6; the locking device includes two screws 17 and two sliders I 18. After the screws 17 are tightened, the gap width between the two sliders I 18 is smaller than the width of the transmission rod 6, which can ensure that the locking device can lock the transmission rod.

[0010] In this embodiment, the cam II 11 is mounted on the transmission rod 6 via an internal hexagonal ball bearing 20, and the entire assembly formed by the two can slide freely on the transmission rod 6.

[0011] The transmission bearing assembly 13 described in this embodiment includes transmission bearing I 22, transmission gear 23, transmission bearing II 24, and hexagonal socket transmission bearing 25. These components are connected to a connecting device 21. Transmission bearing I 22, transmission gear 23, transmission bearing II 24, and hexagonal socket transmission bearing 25 are nested and fixed to the connecting device 21. The inner diameter of the connecting device 21 is larger than that of the transmission rod 6. The diameters of transmission bearing I 22 and transmission bearing II 24 are the same as the inner diameter of the bearing assembly housing, ensuring a proper fit. The hexagonal socket transmission bearing 25 is a one-way hexagonal ball bearing, embedded and fixed to the groove at the tail of the connecting device 21. The entire rear bearing assembly, except for the positioning bearing 16 and the spring 15, is fitted onto the transmission rod 6 via the hexagonal ball bearing 20 and the hexagonal socket transmission bearing 25, allowing free sliding on its upper part. The spring 15 is fixed to the rear bearing assembly housing.

[0012] The positioning bearing 16 described in this embodiment includes a ball bearing II 28, a slider II 29, and a tapered screw 30.

[0013] One end is fixed by spring 15, and the whole is sleeved on the tail of transmission rod 6. The bearing can be fixed to the tail of transmission rod 6 by tightening tapered screw 30 and compressing slider II 29.

[0014] The process of using the device described in this invention is as follows: The entire device is installed on a rock drilling rig or a charging rig, and is used as a filling structure. The diameter of the outer shell 1 is slightly smaller than the borehole diameter. The stemming tube 2 can be connected to the stemming outlet at the stemming machine. After the baffle 3 is installed as shown in the figure, stemming is poured in and transported to the blasting site. The power rod 14 is connected to an external mechanism, such as an electric motor, that can provide rotational torque, and provides rotational power to the transmission rod 6 through the transmission bearing assembly 13. During operation, the stemming tube 2 is inserted into the device through the filling port 7. The air pressure rod 9 retracts, squeezing the baffle 3 through the transmission rod 6 to push the stemming tube to the head, and continues to apply pressure... The clay is squeezed out of the tube opening. At this time, the power rod 14 and the power wheel 12 apply external rotational power to the cam I 10 and cam II 11 through the transmission bearing assembly 13, and together with the spring 15, generate a forward pulse thrust to compact the clay. After that, the pneumatic rod 9 stretches to pull the clay tube 2 to the filling port 7. Before the next filling cycle, the clay tube 2 is taken out and the clay tube 2 filled with clay is inserted again. This device has a simple structure and is easy to operate. It can realize the automation of blast hole filling and save a lot of time and labor costs.

[0015] Beneficial effects of the present invention

[0016] (1) The present invention can significantly improve the quality of the filling of the blasting mud, improve the blasting effect and reduce the consumption of explosives.

[0017] (2) The present invention is simple to operate, which can not only reduce the intensity of workers’ filling work, but also improve filling efficiency.

[0018] (3) The mud tube 2 of the present invention can be recycled and can be connected to the mud filling machine. The mud filling has the characteristics of simple operation and low cost. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention (front view).

[0020] Figure 2 This is a schematic diagram of the structure of the present invention (left view).

[0021] Figure 3 This is a schematic diagram (front view) of the structure of the cam 10 of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the cam 10 of the present invention (left view).

[0023] Figure 5 This is a schematic diagram (top view) of the structure of the cam 10 of the present invention.

[0024] Figure 6 This is a schematic diagram (front view) of the cam 11 of the present invention.

[0025] Figure 7This is a schematic diagram (left view) of the cam 11 of the present invention.

[0026] Figure 8 This is a schematic diagram (top view) of the cam 11 of the present invention.

[0027] Figure 9 This is an enlarged schematic diagram (front view) of the transmission bearing assembly 13.

[0028] Figure 10 This is an enlarged schematic diagram (top view) of the transmission bearing assembly 13.

[0029] Figure 11 This is a schematic diagram of the transmission bearing assembly 13 of the present invention.

[0030] Figure 12 This is a schematic diagram (front view) of the connecting device 21 of the present invention.

[0031] Figure 13 This is a schematic diagram (left view) of the connecting device 21 of the present invention.

[0032] Figure 14 This is a schematic diagram (front view) of the positioning bearing 16 of the present invention.

[0033] Figure 15 This is a schematic diagram of the longitudinal section of the internal slider II 29 of the positioning bearing 16 of the present invention along the central axis of the tapered screw 30.

[0034] Figure 16 This is a schematic diagram (front view) of the front bearing assembly 8 of the present invention.

[0035] Figure 17 This is a schematic diagram (left view) of the front bearing assembly 8 of the present invention.

[0036] Figure 18 This is a schematic diagram (top view) of the front bearing assembly 8 of the present invention.

[0037] Figure 19 This is a schematic diagram of the baffle 3 structure of the present invention.

[0038] Figure 20 This is a schematic diagram of the structure of the mud tube 2 of the present invention.

[0039] Figure 21 This is a schematic diagram of the working process of the mud tube 2 of the present invention.

[0040] Figure 22 This is a schematic diagram of the working function of the baffle 3 of the present invention.

[0041] In the diagram: 1-Outer shell; 2-Mud tube; 3-Baffle; 4-Tube housing cover; 5-Hinge; 6-Drive rod; 7-Filling port; 8-Front bearing assembly; 9-Pneumatic rod; 10-Cam I; 11-Cam II; 12-Drive wheel; 13-Drive bearing assembly; 14-Drive rod; 15-Spring; 16-Positioning bearing; 17-Screw I; 18-Slider I; 19-Screw II; 20-Hexagon socket ball bearing; 21-Connecting device; 22-Drive bearing I; 23-Drive gear; 24-Drive bearing II; 25-Hexagon socket drive bearing; 26-Ball bearing I; 27-Linear bearing; 28-Ball bearing II; 29-Slider II; 30-Tapered screw; 31-Ventilation hole. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described. Example 1

[0043] An automatic filling device for blasting boreholes includes a housing 1, a mud pipe 2, a baffle 3, a casing cover 4, a transmission rod 6, a filling port 7, a front bearing assembly 8, a pneumatic rod 9, a cam I 10, a cam II 11, a drive wheel 12, a transmission bearing assembly 13, a drive rod 14, a spring 15, a positioning bearing 16, and a vent 31. The housing 1 has a filling port 7 at its upper part, the size of which corresponds to the mud pipe 2. The mud pipe 2 is inserted into the housing 1 through the filling port 7. The top of the mud pipe 2 is equipped with a baffle 3, the top of which is connected to the transmission rod 6. A casing cover is located at the filling port 7. 4; The power mechanism is connected to the transmission rod 6 via the power rod 14, power wheel 12, transmission bearing assembly 13, cam I 10, and cam II 11, providing rotational power to the transmission rod 6; the upper end of the pneumatic rod 9 is connected to the outer shell of the transmission bearing assembly 13, and the lower end is connected to the outer shell 1, providing power for the up-and-down movement of the transmission rod 6; the front bearing assembly 8 is located at one end of the filling port 7, is integrally embedded and fixed to the tail of the outer shell 1, and is nested on the transmission rod 6 through the internal linear bearing 27; the two ends of the spring 15 are fixed to the outer shell of the transmission bearing assembly and the positioning bearing 16, respectively. The diameter of the outer shell 1 is slightly smaller than the drilling diameter, and the head has an annular snap; the tube cover 4 is connected to the edge of the filling port 7 via a hinge 5; the baffle 3 has a vent 31 inside.

[0044] In this embodiment, the cam I 10 is fitted onto the transmission rod 6. The locking device includes two screws 17 and two sliders I 18. After the screws 17 are tightened, the gap width between the two sliders I 18 is smaller than the width of the transmission rod 6, ensuring that the locking device can lock the transmission rod in place. Figure 3 As shown.

[0045] The cam II 1 is mounted on the transmission rod 6 via an internal hexagonal ball bearing 20, and the entire assembly can slide freely on the transmission rod 6. Its tail is fixed to one end of the connecting device 21 by a screw II 19. Figure 4 As shown.

[0046] The transmission bearing assembly 13 includes transmission bearing I 22, transmission gear 23, transmission bearing II 24, and hexagonal socket transmission bearing 25, along with a connecting device 21. Transmission bearing I 22, transmission gear 23, transmission bearing II 24, and hexagonal socket transmission bearing 25 are nested and fixed to the connecting device 21. The inner diameter of the connecting device 21 is larger than that of the transmission rod 6. The diameters of transmission bearing I 22 and transmission bearing II 24 are the same as the inner diameter of the bearing assembly housing, ensuring a proper fit. The hexagonal socket transmission bearing 25 is a one-way hexagonal ball bearing, embedded and fixed to the groove at the tail of the connecting device 21. The entire rear bearing assembly, except for the positioning bearing 16 and spring 15, is fitted onto the transmission rod 6 via the hexagonal ball bearing 20 and the hexagonal socket transmission bearing 25, allowing free sliding on its upper part. The spring 15 is fixed to the rear bearing assembly housing. Figure 7 As shown.

[0047] The positioning bearing 16 includes a ball bearing II 28, a slider II 29, and a tapered screw 30. One end of the screw is fixed by a spring 15, and the entire bearing is fitted onto the tail of the transmission rod 6. Tightening the tapered screw 30 compresses the slider II 29, thereby fixing the bearing to the tail of the transmission rod 6. The structure is as follows. Figure 8 As shown.

[0048] The front bearing assembly 8 comprises a ball bearing I 26 and a linear bearing 27. The ball bearing I 26 is a one-way bearing, and its rotation is opposite to that of the internal hexagonal ball bearing 20 and the internal hexagonal drive bearing 25. That is, if the ball bearing I 26 can only rotate clockwise, then the internal hexagonal ball bearing 20 and the internal hexagonal drive bearing 25 can only rotate counterclockwise. If the ball bearing I 26 rotates clockwise, then the internal hexagonal ball bearing 20 and the internal hexagonal drive bearing 25 will not rotate, transmitting power to the transmission rod 6. The structure of the front bearing assembly 8 is as follows: Figure 9 As shown.

[0049] The diameter of the central hole of the transmission device 21 is larger than that of the transmission rod 6, so no friction will be generated during the relative movement with the transmission rod; the bearings included in this device will not slide with the directly contacting parts except for the contact surface with the transmission rod 6.

[0050] The process of using the device described in this invention:

[0051] After the borehole is filled with propellant, the clay tube 2, filled with clay, is installed inside the device through the filling port 7 and pushed to the head of the device. Screw 17 is tightened to lock cam I 10 and transmission rod 6, and tapered screw 30 is tightened to lock the transmission rod 6 in place by the positioning bearing 16. The device head is then aligned with the borehole and inserted to the deepest point required for filling. At this point, the switch of the pneumatic rod 9 is turned on, extending the pneumatic rod to push the clay into the borehole. The external power unit is then turned on, transmitting rotational power to cam II 11 via the transmission bearing assembly 13. The rotation direction is opposite to that of ball bearing I 26. The transmission rod is locked and cannot rotate, cam I 10 cannot rotate, and cam II... 11. Rotate the surface of friction cam I 10. The two interact with each other and, together with spring 15 and positioning bearing 16, generate pulse thrust to compact the clay. At this point, the first tube of clay is filled. Then, the external power device generates the opposite rotational force, which acts on cam II 11 through transmission bearing assembly 13. Since the rotation direction is opposite to the rotation direction of internal hexagonal ball bearing 20 and internal hexagonal transmission bearing 25, the bearing transmits the rotational force to transmission rod 6. Ball bearing I 26 will then rotate freely, and the power will be transmitted to baffle 3, causing baffle 3 to detach from the viscous clay. At this time, open the air pressure rod 9 to retract the air pressure rod. Since positioning bearing 16 is stuck on transmission rod 6, baffle 3 and empty clay tube 2 will be pulled out at the same time. Pull them to the filling port 7, take out the empty clay tube 2 and insert a new clay tube 2 filled with clay. Finally, pull the device outward by the length of a clay tube. Repeat the above operation until filling is complete.

[0052] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An automatic filling device for engineering blasting boreholes, characterized in that: Includes outer shell (1), mud tube (2), baffle (3), tube cover (4), transmission rod (6), filling port (7), front bearing assembly (8), pneumatic rod (9), cam I (10), cam II (11), drive wheel (12), transmission bearing assembly (13), drive rod (14), spring (15), positioning bearing (16), and vent (31). The outer shell (1) is provided with a filling port (7) at the top. The size of the filling port (7) corresponds to that of the clay tube (2). The clay tube (2) is inserted into the outer shell (1) through the filling port (7). The top of the clay tube (2) is provided with a baffle (3). The top of the baffle (3) is connected to the transmission rod (6). The filling port (7) is provided with a tube compartment cover (4). The power mechanism is connected to the transmission rod (6) through the power rod (14), the power wheel (12), the transmission bearing assembly (13), the cam I (10), and the cam II (11). The transmission rod (6) is provided with rotational power; the upper end of the pneumatic rod (9) is fixed to the outer shell of the transmission bearing assembly (13), and the lower end is fixed to the outer shell (1). The pneumatic rod (9) provides the transmission rod (6) with the power to move up and down; the front bearing assembly (8) is located at one end of the filling port (7), is embedded and fixed to the tail of the outer shell (1), and is nested on the transmission rod (6) through the internal linear bearing (27); the two ends of the spring (15) are fixed to the outer shell of the transmission bearing assembly and the positioning bearing (16) respectively; The transmission bearing assembly (13) includes transmission bearing I (22), transmission gear (23), transmission bearing II (24), internal hexagonal transmission bearing (25), and connecting device (21); wherein transmission bearing I (22), transmission gear (23), and transmission bearing II (24) are all nested and fixed on the connecting device (21), the inner diameter of the connecting device (21) is larger than that of the transmission rod (6), and the diameters of transmission bearing I (22) and transmission bearing II (24) are consistent with the inner diameter of the bearing assembly shell to ensure fitting with the bearing assembly shell; the internal hexagonal transmission bearing (25) is a one-way internal hexagonal ball bearing, which is embedded in the groove at the tail of the connecting device (21) and fixed thereto. Except for the positioning bearing (16) and the spring (15), the entire rear bearing assembly is fitted on the transmission rod (6) through the internal hexagonal ball bearing (20) and the internal hexagonal transmission bearing (25) and can slide freely on its upper part; the spring (15) is fixed to the rear bearing assembly shell; The front bearing assembly (8) includes ball bearing I (26) and linear bearing (27). Ball bearing I (26) is a one-way bearing. The rotation of ball bearing I (26) is opposite to that of internal hexagonal ball bearing (20) and internal hexagonal drive bearing (25). That is, if ball bearing I (26) can only rotate clockwise, then internal hexagonal ball bearing (20) and internal hexagonal drive bearing (25) can only rotate counterclockwise. If ball bearing I (26) rotates clockwise, then internal hexagonal ball bearing (20) and internal hexagonal drive bearing (25) will not rotate and will transmit power to the transmission rod (6).

2. The automatic filling device for blasting boreholes according to claim 1, characterized in that: The diameter of the outer shell (1) is slightly smaller than the diameter of the drill hole, and the head has a ring-shaped mortise.

3. The automatic filling device for engineering blasting boreholes according to claim 1, characterized in that: The tube cover (4) is connected to the edge of the filling port (7) via a hinge (5).

4. The automatic filling device for engineering blasting boreholes according to claim 1, characterized in that: The baffle (3) has a vent (31) inside.

5. The automatic filling device for blasting boreholes according to claim 1, characterized in that: The cam I (10) is fitted onto the transmission rod (6); the locking device includes two screws (17) and two sliders I (18). After the screws (17) are tightened, the gap between the two sliders I (18) is smaller than the width of the transmission rod (6), which can ensure that the locking device can lock the transmission rod.

6. The automatic filling device for blasting boreholes according to claim 1, characterized in that: The cam II (11) is mounted on the transmission rod (6) by a fixed internal hexagonal ball bearing (20), and the whole formed by the two can slide freely on the transmission rod (6).

7. The automatic filling device for blasting boreholes according to claim 1, characterized in that: The positioning bearing (16) includes a ball bearing II (28), a slider II (29), and a tapered screw (30). One end of the screw is fixed by a spring (15), and the whole assembly is fitted onto the tail of the transmission rod (6). By tightening the tapered screw (30), the slider II (29) is compressed, thereby fixing the bearing to the tail of the transmission rod (6).

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