Retractable flexible reducing device for explosive outlet of mixed loading truck

Abstract

The utility model relates to the field of open blasting, and discloses a mixed loading truck explosive outlet retractable flexible reducing device which comprises a mixed loading truck, the tail portion of the mixed loading truck is fixedly connected with an explosive conveying pipe, the lower end of the explosive conveying pipe is connected with a hose in a clamped mode, and the end, away from the explosive conveying pipe, of the hose is provided with a diameter adjusting device. A sealing device is arranged at the lower end of the medicine conveying pipe, the diameter adjusting device comprises a sleeve rod, and a limiting block is fixedly connected to the left side of the sleeve rod. According to the utility model, the sleeve rod, the limiting block, the limiting rod, the thorn gear, the adjusting blade and the inner rod are arranged, so that the diameter of the hose at the lower end can be adjusted according to the diameter of a blast hole in an actual open blasting area; the phenomenon that explosives extrude the hose to expand and come out of a blast hole in the material injection process can be avoided, and meanwhile manpower and material resources consumed by manual material carrying can be saved through the hose.

Description

Technical Field

[0001] The utility model relates to the field of open-air blasting, in particular to a retractable flexible diameter-changing device for a charge outlet of a mixing vehicle. Background Art

[0002] Open-pit blasting is a blasting operation carried out on the surface or below the surface, commonly used in fields including mining, excavation, construction and civil engineering. It is a method of placing explosives underground and detonating them to destroy surface or underground rocks, soil or other materials to achieve specific engineering goals.

[0003] In the prior art, some open-pit mines have small rock strata or the steps are designed to be low steps due to process mining requirements, and small-diameter drill holes need to be used to match the low steps.

[0004] However, in actual use, small-diameter drilling makes it impossible for traditional mixing vehicles to be used due to the large diameter of the discharge port. At the same time, manual transportation of explosives and filling of blast holes often require more operators, making the high-risk area of ​​the blasting site a labor-intensive place, and there is a risk of mass deaths and injuries caused by a single accident. Therefore, a retractable and flexible diameter-changing device for the discharge port of a mixing vehicle is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a retractable flexible diameter-changing device for the discharge port of a mixing vehicle, aiming to improve the problem in the prior art that the existing small-diameter drilling and blasting pipeline is not compatible with the discharge port diameter of the mixing vehicle.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a retractable flexible diameter-changing device for a drug outlet of a mixing vehicle, comprising a mixing vehicle, a drug delivery tube is fixedly connected to the rear of the mixing vehicle, a hose is clamped at the lower end of the drug delivery tube, a diameter adjustment device is arranged at one end of the hose away from the drug delivery tube, and a sealing device is arranged at the lower end of the drug delivery tube;

[0007] The diameter adjustment device includes a sleeve rod, the left side of the sleeve rod is fixedly connected to a limit block, the left side of the sleeve rod is rotatably connected to a limit rod, the left side of the sleeve rod is rotatably connected to a thorn gear, the inner arc surface of the thorn gear is rotatably connected to an inner rod, and the outer arc surface of the inner rod is connected to an adjusting blade by a piston.

[0008] As a further description of the above technical solution:

[0009] The sealing device comprises a shielding block, an inner piston of the shielding block is connected to a movable shaft, a sealing plate is fixedly connected to the outer arc surface of the movable shaft, and a blocking block is fixedly connected to the inner arc surface of the shielding block.

[0010] As a further description of the above technical solution:

[0011] The mixing vehicle is provided with a through hole near the drug delivery tube, a feed pump is arranged inside the mixing vehicle, the upper end diameter of the hose is larger than the lower end diameter, and a through hole is provided at the center of the inner surface of the sleeve rod.

[0012] As a further description of the above technical solution:

[0013] The inner arc surface of the sleeve rod is fixedly connected to the hose, the limit block is arranged as a semicircular arc as a whole, the inner surface of the limit rod is elastically connected to the sleeve rod through a volute spring, and the left side surface of the sleeve rod is provided with multiple groups of cylindrical protrusions extending into the interior of the limit rod.

[0014] As a further description of the above technical solution:

[0015] The inner arc surface of the inner rod is provided with multiple groups of arc-shaped through holes, the inner arc surface of the adjusting blade is fixedly connected to the end of the hose, the adjusting blades are provided with multiple groups, and the multiple groups of adjusting blades are distributed in a circular array with the center of the inner rod as the center of the array.

[0016] As a further description of the above technical solution:

[0017] The outer arc surface of the shielding block is fixedly connected to the medicine delivery tube, and a rectangular groove is provided at the center of the inner surface of the shielding block.

[0018] As a further description of the above technical solution:

[0019] A cylindrical protrusion is arranged at the central groove of the shielding block, and the protrusion penetrates into the interior of the movable shaft, and the inner arc surface of the movable shaft is elastically connected to the shielding block through a volute spring.

[0020] As a further description of the above technical solution:

[0021] One end of the sealing plate away from the movable shaft is arranged as an arc surface, and the blocking block is located at the upper end of the sealing plate.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model can adjust the diameter of the lower end hose according to the diameter of the internal blasthole in the actual open-air blasting area through the sleeve rod, limit block, limit rod, thorn gear, adjustment blade, and inner rod. At the same time, the one-way limiting property of the thorn gear can avoid the phenomenon that the hose is squeezed by explosives during the injection process, causing it to expand and fall out of the blasthole. Similarly, the hose can also save manpower and material resources consumed in manual material handling.

[0024] 2. In the utility model, by providing the shielding block, movable shaft, sealing plate and blocking block, after the discharge of materials is stopped at the drug delivery tube, the elastic force of the volute spring on the movable shaft can drive the sealing plate to move toward the blocking block. At this time, the sealing plate, shielding plate and movable shaft will be able to seal the lower end of the drug delivery tube, thereby preventing the residual material inside the drug delivery tube from falling into the environment, and also preventing dust and impurities in the environment from entering the drug delivery tube and contaminating the explosives. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a retractable flexible diameter-changing device for a medicine discharging port of a mixing vehicle proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of a diameter adjustment device of a retractable flexible diameter-changing device at a medicine outlet of a mixing vehicle proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the end of a limit rod of a retractable flexible diameter-changing device at a medicine outlet of a mixing vehicle proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of a cross-section of a medicine delivery pipe of a retractable flexible diameter-changing device at a medicine outlet of a mixing vehicle proposed by the utility model;

[0029] Figure 5 This is a schematic diagram of the end portion of a movable shaft of a retractable and flexible diameter-changing device at a medicine outlet of a mixing vehicle proposed by the utility model.

[0030] Legend:

[0031] 1. Mixing vehicle; 2. Diameter adjustment device; 3. Sealing device; 4. Drug delivery tube; 5. Hose; 201. Sleeve rod; 202. Limit block; 203. Limit rod; 204. Thorn gear; 205. Adjusting blade; 206. Inner rod; 301. Blocking block; 302. Movable shaft; 303. Sealing plate; 304. Blocking block. DETAILED DESCRIPTION

[0032] 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3The utility model provides an embodiment: a retractable flexible diameter-changing device for a drug outlet of a mixing vehicle, comprising a mixing vehicle 1, a drug delivery tube 4 is fixedly connected to the rear of the mixing vehicle 1, a hose 5 is clamped at the lower end of the drug delivery tube 4, a diameter adjustment device 2 is arranged at one end of the hose 5 away from the drug delivery tube 4, and a sealing device 3 is arranged at the lower end of the drug delivery tube 4

[0034] The diameter adjustment device 2 includes a sleeve rod 201, the left side of the sleeve rod 201 is fixedly connected to a limit block 202, the left side of the sleeve rod 201 is rotatably connected to a limit rod 203, the left side of the sleeve rod 201 is rotatably connected to a thorn gear 204, the inner arc surface of the thorn gear 204 is rotatably connected to an inner rod 206, and the outer arc surface of the inner rod 206 is connected to an adjusting blade 205 by a piston.

[0035] A through hole is provided near the drug delivery tube 4 in the mixing vehicle 1, so that it can be connected with the drug delivery tube 4. A feed pump is provided inside the mixing vehicle 1, and the feed pump is a transfer device in the prior art, so that the explosive material in the mixing vehicle 1 can be transported to the inside of the drug delivery tube 4. The diameter of the upper end of the hose 5 is larger than the diameter of the lower end, so that the upper end of the hose 5 can be connected and communicated with the bulk explosive outlet with a diameter of 310 mm in the prior art. A through hole is provided at the center of the inner surface of the sleeve rod 201, so that the hose 5 can pass through. The inner arc surface of the sleeve rod 201 is fixedly connected to the hose 5. The limit block 202 is set as a semicircular arc as a whole, so that the rotatable angle of the limit rod 203 can be limited. The inner surface of the limit rod 203 is connected to the sleeve rod 201 through a volute spring. The elastic connection enables it to quickly reset and maintain the one-way limit of the thorn gear 204 after being squeezed and rotated by the thorn gear 204. The left surface of the sleeve rod 201 is provided with multiple groups of cylindrical protrusions extending into the interior of the limit rod 203, so that it can form an elastic connection with the spiral spring inside the limit rod 203. The inner arc surface of the inner rod 206 is provided with multiple groups of arc-shaped through holes, so that it can accommodate the adjustment blade 205 and connect it to its piston. The inner arc surface of the adjustment blade 205 is fixedly connected to the end of the hose 5, so when the adjustment blade 205 rotates, it can synchronously drive the inner end of the hose 5 to open or shrink. There are multiple groups of adjustment blades 205, and the multiple groups of adjustment blades 205 are distributed in a circular array with the center of the inner rod 206 as the center of the array.

[0036] Reference Figure 4-Figure 5 The sealing device 3 includes a shielding block 301 , an inner piston of the shielding block 301 is connected to a movable shaft 302 , a sealing plate 303 is fixedly connected to the outer arc surface of the movable shaft 302 , and a blocking block 304 is fixedly connected to the inner arc surface of the shielding block 301 .

[0037] The outer arc surface of the blocking block 301 is fixedly connected to the drug delivery tube 4, and a rectangular groove is provided at the center of the inner surface of the blocking block 301, so that the movable shaft 302 and the sealing plate 303 can be accommodated therein. A cylindrical protrusion is provided at the central groove of the blocking block 301, so that it can form a rotational connection with the movable shaft 302, and the protrusion penetrates into the movable shaft 302. The inner arc surface of the movable shaft 302 is elastically connected to the blocking block 301 through a volute spring, so that when the sealing plate 303 is squeezed by the explosive, the volute spring can drive the sealing plate 303 to move toward the blocking block 304 through its own elastic force. The end of the sealing plate 303 away from the movable shaft 302 is set as an arc surface, so that it is not easy to produce motion interference with the drug delivery tube 4 during rotation. The blocking block 304 is located at the upper end of the sealing plate 303, so it can prevent the sealing plate 303 from being driven by the volute spring to rotate upward.

[0038] Working principle: When the device is used, it is necessary to start the mixing vehicle 1 and move it to the place where the explosives are waiting to be filled, and connect the upper end of the hose 5 to the drug delivery pipe 4. At this time, the explosives can be continuously transported to the inside of the hose 5 through the drug delivery pump arranged inside the mixing vehicle. At this time, due to the discharge pressure provided by the drug delivery pump, the sealing plate 303 can rotate downward due to being squeezed, and the explosives will be able to smoothly enter the inside of the hose 5. At the same time, after the feeding is completed, the drug delivery pump needs to be closed immediately. At this time, due to the loss of the discharge power provided by the drug delivery pump, the volute spring inside the movable shaft 302 will be able to drive the sealing plate 303 to move toward the blocking block 304 through its own elastic force, and finally fit to the blocking block 304 to form a seal on the lower end of the drug delivery pipe 4, thereby reducing the probability of dust and impurities in the external environment contaminating the drug delivery pipe 4, and at the same time, it can prevent the residual explosives in the drug delivery pipe 4 from falling into the environment.

[0039] At the same time, when the hose 5 is connected to the blast hole, it is necessary to rotate the thorn gear 204 according to the actual diameter of the blast hole. At this time, the thorn gear 204 will drive the cylindrical protrusion on its outer surface to squeeze the adjusting blade 205. At the same time, due to the obstruction of the limit rod 203 and the limit block 202, the thorn gear 204 cannot rotate. At the same time, as the adjusting blade 205 moves, the adjusting blade 205 will also drive the hose 5 inside it to shrink, and finally enable it to be compressed to a shape similar to the diameter of the blast hole. At this time, the end of the hose 5 can be inserted into the blast hole, and the stable connection between the inner rod 206 and the blast hole is maintained by the connecting piece, so that the device can inject explosives into blast holes of different diameters.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A retractable flexible diameter-changing device for a medicine discharging port of a mixing vehicle, comprising a mixing vehicle (1), characterized in that: The rear end of the mixing vehicle (1) is fixedly connected to a drug delivery tube (4), the lower end of the drug delivery tube (4) is clamped with a hose (5), the end of the hose (5) away from the drug delivery tube (4) is provided with a diameter adjustment device (2), and the lower end of the drug delivery tube (4) is provided with a sealing device (3); The diameter adjustment device (2) comprises a sleeve rod (201), the left side of the sleeve rod (201) is fixedly connected to a limit block (202), the left side of the sleeve rod (201) is rotatably connected to a limit rod (203), the left side of the sleeve rod (201) is rotatably connected to a thorn gear (204), the inner arc surface of the thorn gear (204) is rotatably connected to an inner rod (206), and the outer arc surface of the inner rod (206) is connected to an adjustment blade (205) by a piston.

2. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 1 is characterized in that: The sealing device (3) comprises a shielding block (301), the inner piston of the shielding block (301) is connected to a movable shaft (302), the outer arc surface of the movable shaft (302) is fixedly connected to a sealing plate (303), and the inner arc surface of the shielding block (301) is fixedly connected to a blocking block (304).

3. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 1 is characterized in that: The mixing vehicle (1) is provided with a through hole near the drug delivery tube (4), a feed pump is arranged inside the mixing vehicle (1), the upper end diameter of the hose (5) is larger than the lower end diameter, and a through hole is provided at the center of the inner surface of the sleeve rod (201).

4. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 1 is characterized in that: The inner arc surface of the sleeve rod (201) is fixedly connected to the hose (5); the limit block (202) is arranged as a semicircular arc shape as a whole; the inner surface of the limit rod (203) is elastically connected to the sleeve rod (201) via a spiral spring; and the left side surface of the sleeve rod (201) is provided with a plurality of groups of cylindrical protrusions extending into the interior of the limit rod (203).

5. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 1 is characterized in that: The inner arc surface of the inner rod (206) is provided with a plurality of groups of arc-shaped through holes, the inner arc surface of the regulating blade (205) is fixedly connected to the end of the hose (5), the regulating blade (205) is provided with a plurality of groups, and the plurality of groups of regulating blades (205) are arranged in a circular array with the center of the inner rod (206) as the center of the array.

6. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 2, characterized in that: The outer arc surface of the shielding block (301) is fixedly connected to the medicine delivery tube (4), and a rectangular groove is provided at the center of the inner surface of the shielding block (301).

7. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 6 is characterized in that: A cylindrical protrusion is provided at the central groove of the shielding block (301), and the protrusion penetrates into the interior of the movable shaft (302); the inner arc surface of the movable shaft (302) is elastically connected to the shielding block (301) via a spiral spring.

8. The retractable flexible diameter-changing device for the medicine discharging port of a mixing vehicle according to claim 2 is characterized in that: One end of the sealing plate (303) away from the movable shaft (302) is configured as a curved surface, and the blocking block (304) is located at the upper end of the sealing plate (303).

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