Reel special for on-site mixed explosive conveying hose

Abstract

The utility model relates to a special reel for an on-site mixed explosive conveying hose, which comprises a support, a winding drum and a driving device, the winding drum is rotatably connected onto the support, and the rotating axis is collinear with the central axis of the winding drum; the output end of the driving device is connected with the winding drum for driving the winding drum to rotate; the winding drum is provided with a spiral groove used for containing a hose. The support is provided with a plurality of pressing rollers surrounding the winding drum in the circumferential direction, the central axis of any pressing roller is parallel to the central axis of the winding drum, and the multiple pressing rollers are used for limiting hoses to be arranged in a spiral groove of the winding drum in a single-layer mode. Compared with the prior art, during water hole charging and pipe drawing, the conveying hoses are arranged on the outer wall of the winding drum in a single layer mode, the winding diameter of the hoses is not changed, the pipe drawing speed can be controlled to be not changed by controlling the rotating speed of the winding drum, charging is more continuous, and the blasting quality is better.

Description

Technical Field

[0001] The utility model relates to the technical field of on-site blasting construction, and particularly relates to a special reel for a conveying hose of on-site mixed explosives. Background Art

[0002] When loading explosives into water holes during on-site blasting construction, a hose reel is used to send the emulsion matrix conveying hose to the bottom of the water surface in the blast hole. After starting the charging program for a period of time until the explosive liquid level is about 1 meter higher than the explosive outlet of the end mixer, start the automatic tube pulling program, and pull the tube while charging. The tube pulling speed of the hose reel should be basically consistent with the rising speed of the explosive liquid level. If the tube pulling speed is too fast, it is easy to cause discontinuous explosive charging. The water remaining in the explosive reduces the explosive performance and may even cause misfiring; if the tube pulling speed is too slow, it is easy to cause the emulsion matrix conveying hose to be buried too deep in the explosive. When pulling out the hose after charging is completed, it is easy to suck the water above the explosive liquid level into the lower explosive, which also affects the explosive performance. In the prior art, the conveying hoses on the hose reel are arranged in multiple layers. As the length of the hose on the reel increases, the winding diameter of the hose continuously increases. If the reel rotation speed is constant, the hose winding speed will become faster and faster. When charging water holes, it is easy to cause discontinuous charging due to too fast tube pulling speed, affecting the blasting quality and even causing misfiring of the explosive. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a special reel for a conveying hose of on-site mixed explosives, aiming at the problem in the prior art that the conveying hoses on the hose reel are arranged in multiple layers, and the increase in the hose winding diameter leads to an increase in the hose winding speed. When charging water holes, it is easy to cause discontinuous charging due to too fast tube pulling speed, affecting the blasting quality.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A special reel for a conveying hose of on-site mixed explosives includes a bracket, a reel, and a driving device. The reel is rotatably connected to the bracket, and the rotation axis is collinear with the central axis of the reel; the output end of the driving device is connected to the reel for driving the reel to rotate; a spiral groove for accommodating the hose is provided on the reel; several pressing rollers surrounding the circumference of the reel are provided on the bracket, the central axis of any pressing roller is parallel to the central axis of the reel, and the several pressing rollers are used to limit the hose to be arranged in a single layer in the spiral groove of the reel.

[0006] For the present utility model adopting the foregoing technical solution, when pulling out the pipe during underwater hole charging, the driving device drives the reel to rotate, and the hose will be accommodated in the spiral groove and wound around the outer wall of the reel along the track of the spiral groove. Due to the provision of the pressure roller, the limitation of the pressure roller in the radial direction makes it impossible for the hose to form multiple layers of arrangement in the spiral groove, and only a single-layer arrangement can be formed. The single-layer arranged hose closely adheres to the outer wall of the reel, making the winding diameter of the hose consistent. If the rotation speed of the reel is kept unchanged, the pipe pulling speed can be ensured to remain unchanged. Compared with the prior art in which the conveying hose on the hose reel is arranged in multiple layers and the increase in the winding diameter of the hose leads to an accelerated pipe winding speed, during underwater hole charging, it is easy to cause discontinuous charging due to too fast pipe pulling speed, affecting the blasting quality. The present utility model can make the conveying hose arranged in a single layer on the outer wall of the reel during underwater hole charging, the winding diameter of the hose remains unchanged, and by controlling the rotation speed of the reel to remain unchanged, the pipe pulling speed can be controlled to remain unchanged, the charging is more continuous, and the blasting quality is better.

[0007] Further, 4-8 of the pressure rollers are provided circumferentially around the reel, and the pressure rollers are arranged at equal intervals in the circumferential direction; 4-8 pressure rollers are provided and evenly distributed around the reel in the circumferential direction, which can effectively limit the hose to a single-layer arrangement in the spiral groove in the entire circumferential direction of the reel.

[0008] Further, the pressure roller includes a roller shaft and a roller barrel. Both ends of the roller shaft are fixed on the bracket, and the roller barrel is rotatably sleeved on the roller shaft; during the pipe pulling operation, the hose is continuously wound around the reel. By setting the roller barrel to be rotatable, the friction between the hose and the roller barrel is greatly reduced, thereby reducing the rotation resistance of the reel.

[0009] Further, the driving device is a hydraulic motor, a hydraulic motor with a speed reducer or an electric motor with a speed reducer.

[0010] Further, a rotary joint and a main shaft are respectively provided at both ends of the reel, and the central axes of the reel, the rotary joint and the main shaft are collinear; the rotary joint includes a fixed part and a rotating part that can rotate relative to each other, and the two are respectively fixedly connected to the bracket and the reel; an explosive inlet is provided on the fixed part, and an explosive outlet is provided on the rotating part, and the explosive outlet is communicated with the hose; one end of the main shaft is fixedly connected to the reel, and the other end is rotatably inserted into the bracket; with such a setting, the reel can be rotatably connected to the bracket, and the above structure is simple and convenient for manufacturing.

[0011] Further, a rotary encoder is provided on the bracket; a first transmission wheel is mounted on the main shaft, a second transmission wheel is mounted on the shaft of the rotary encoder, and the first transmission wheel and the second transmission wheel are in transmission connection; when the reel rotates, it can drive the main shaft, the first transmission wheel, the second transmission wheel and the shaft of the rotary encoder to rotate in sequence. The rotary encoder accurately measures the rotation speed of the reel, and further accurately measures the pipe pulling speed of the reel; in cooperation with the hydraulic proportional valve and the control system on the on-site bulk explosive loading truck, PID closed-loop regulation is performed on the pipe pulling speed of the reel, and accurate control of the pipe pulling speed of the reel can be achieved.

[0012] Further, the first transmission wheel and the second transmission wheel are in transmission connection through a belt or a chain; the transmission connection between the first transmission wheel and the second transmission wheel can be made stable and reliable through the belt or the chain.

[0013] Further, a first additive delivery pipe and a second additive delivery pipe are laid inside the hose; the rotary joint is a three-way rotary joint. The explosive inlet includes a semi-finished explosive inlet, a first additive inlet and a second additive inlet, and the explosive outlet includes a semi-finished explosive outlet, a first additive outlet and a second additive outlet. The semi-finished explosive outlet is communicated with the hose, the first additive outlet is communicated with the first additive delivery pipe, and the second additive outlet is communicated with the second additive delivery pipe; with such a setting, the first additive, the second additive and the semi-finished explosive can be respectively delivered to the end for mixing through their respective delivery pipes. The ratio and density of the three are easy to accurately control, and the mixture forms an explosive after entering the blast hole for a period of time.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: when charging and pulling out the pipe in a water hole, the conveying hose can be arranged in a single layer on the outer wall of the reel, the winding diameter of the hose remains unchanged, and by controlling the constant rotation speed of the reel, the constant pipe pulling speed can be controlled, the charging is more continuous, and the blasting quality is better; the rotary encoder accurately measures the rotation speed of the reel, and further accurately measures the pipe pulling speed of the reel. In cooperation with the hydraulic proportional valve and the control system on the on-site bulk explosive loading truck, PID closed-loop regulation is performed on the pipe pulling speed of the reel, and accurate control of the pipe pulling speed of the reel can be achieved; a three-way rotary joint is provided, and the first additive, the second additive and the semi-finished explosive can be respectively delivered to the end for mixing through their respective delivery pipes. The ratio and density of the three are easy to accurately control, and the mixture forms an explosive after entering the blast hole for a period of time. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of the interfaces of the three-way rotary joint.

[0017] Markings in the figure: 1 - Rotary joint, 2 - Bracket, 3 - Reel, 4 - Press roller, 5 - Driving device, 6 - First transmission wheel, 7 - Rotary encoder, 8 - Second transmission wheel, 9 - Spindle, 11 - Fixed part, 12 - Rotating part, 01 - Hose, 02 - First additive delivery pipe, 03 - Second additive delivery pipe, 1a - Semi-finished explosive inlet, 1b - First additive inlet, 1c - Second additive inlet, 1d - Semi-finished explosive outlet, 1e - First additive outlet, 1f - Second additive outlet. Detailed implementation mode

[0018] The following combines with the attached drawings to make a detailed description of the present utility model.

[0019] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in combination with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] This embodiment provides a special reel for the on-site mixed loading explosive conveying hose, as Figure 1 - Figure 2 shown, including a bracket 2, a reel 3 and a driving device 5. The reel 3 is rotatably connected to the bracket 2, and the rotation axis is collinear with the central axis of the reel 3; the output end of the driving device 5 is connected to the reel 3 for driving the reel 3 to rotate; a spiral groove for accommodating the hose 01 is provided on the reel 3; several press rollers 4 are provided on the bracket 2 around the circumference of the reel 3. The central axis of any press roller 4 is parallel to the central axis of the reel 3, and the several press rollers 4 are used to limit the hose 01 to be arranged in a single layer in the spiral groove of the reel 3; the net width of the spiral groove is equal to or slightly larger than the diameter of the hose 01, so that the hose 01 can be placed in the spiral groove. During the hose pulling operation, the hose 01 is wound around the outer wall of the reel 3 in a circle along the track of the spiral groove; the net distance between the outer wall of the reel 3 and the press roller 4 is equal to or slightly larger than the diameter of the hose 01, so that the hose 01 can be limited to be arranged in a single layer and fit on the outer wall of the reel 3;

[0021] There are 4 - 8 press rollers 4 arranged around the circumference of the reel 3, and the press rollers 4 are arranged at equal intervals along the circumference;

[0022] The press roller 4 includes a roller shaft and a roller barrel. The two ends of the roller shaft are fixed on the bracket 2, and the roller barrel is rotatably sleeved on the roller shaft;

[0023] The driving device 5 is a hydraulic motor, a hydraulic motor with a reducer or an electric motor with a reducer; its output shaft is connected and collinear with the spindle 9, and its outer shell is fixedly arranged on the bracket 2;

[0024] At both ends of the reel 3, a rotary joint 1 and a main shaft 9 are respectively provided, and the central axes of the reel 3, the rotary joint 1 and the main shaft 9 are collinear; the rotary joint 1 includes a fixed part 11 and a rotating part 12 that can rotate relative to each other, and the two are respectively fixedly connected to the bracket 2 and the reel 3; an explosive inlet is provided on the fixed part 11, and an explosive outlet is provided on the rotating part 12, and the explosive outlet is communicated with the hose 01; one end of the main shaft 9 is fixedly connected to the reel 3, and the other end is rotatably inserted on the bracket 2;

[0025] A rotary encoder 7 is provided on the bracket 2; a first driving wheel 6 is installed on the main shaft 9, a second driving wheel 8 is installed on the shaft of the rotary encoder 7, and the first driving wheel 6 and the second driving wheel 8 are in transmission connection; the first driving wheel 6 and the second driving wheel 8 are in transmission connection through a belt or a chain; the first driving wheel 6 is a large driving wheel, and the second driving wheel 8 is a small driving wheel;

[0026] A first additive delivery pipe 02 and a second additive delivery pipe 03 are laid inside the hose 01; the rotary joint 1 is a three-way rotary joint, the explosive inlet includes a semi-finished explosive inlet 1a, a first additive inlet 1b and a second additive inlet 1c, the explosive outlet includes a semi-finished explosive outlet 1d, a first additive outlet 1e and a second additive outlet 1f, the semi-finished explosive outlet 1d is communicated with the hose 01, the first additive outlet 1e is communicated with the first additive delivery pipe 02, and the second additive outlet 1f is communicated with the second additive delivery pipe 03; the semi-finished explosive is an emulsion matrix, the first additive is a sensitizer, and the second additive is an accelerator. These three materials flow in their respective delivery hoses, and after converging at the end of the emulsion matrix delivery hose 01, they are immediately mixed by a static mixer at the end and then enter the blast hole, and emulsion explosive is formed after a period of time.

[0027] The utility model adopting the foregoing technical solution, when pulling out the pipe with water hole charging, the driving device 5 drives the reel 3 to rotate, and the hose 01 is accommodated in the spiral groove and wound around the outer wall of the reel 3 along the track of the spiral groove. Due to the setting of the pressure roller 4, the limitation of the pressure roller 4 in the radial direction makes it impossible for the hose 01 to form a multi-layer arrangement in the spiral groove, and only a single-layer arrangement can be formed. The single-layer arranged hose 01 closely adheres to the outer wall of the reel 3, so that the winding diameter of the hose 01 remains consistent. If the rotation speed of the reel 3 is kept unchanged, the pipe pulling speed can be ensured to be unchanged; compared with the prior art in which the conveying hose on the hose reel is arranged in multiple layers and the winding diameter of the hose increases, resulting in an accelerated pipe winding speed, when performing water hole charging, it is easy to cause discontinuous charging due to too fast pipe pulling speed, affecting the blasting quality. The utility model can make the conveying hose arranged in a single layer on the outer wall of the reel during water hole charging, the winding diameter of the hose remains unchanged, and controlling the rotation speed of the reel unchanged can control the pipe pulling speed unchanged, the charging is more continuous, and the blasting quality is better; at the same time, the rotary encoder accurately measures the rotation speed of the reel, and then accurately measures the pipe pulling speed of the reel. Cooperating with the hydraulic proportional valve and the control system on the on-site mixed explosive truck, PID closed-loop adjustment is carried out on the pipe pulling speed of the reel, and accurate control of the pipe pulling speed of the reel can be realized; a three-way rotary joint is set, and the first additive, the second additive and the explosive semi-finished product can be respectively conveyed to the end for mixing through their respective conveying pipes. The ratio and density of the three are easy to accurately control, and the mixture forms an explosive after entering the blast hole for a period of time.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A special reel for on-site mixed explosive delivery hoses, characterized in that: It includes a bracket (2), a reel (3) and a driving device (5). The reel (3) is rotatably connected to the bracket (2), and the rotation axis is collinear with the central axis of the reel (3). The output end of the driving device (5) is connected to the reel (3) for driving the reel (3) to rotate. A spiral groove for accommodating a hose (01) is provided on the reel (3). A plurality of pressure rollers (4) surrounding the circumference of the reel (3) are provided on the bracket (2). The central axis of any one of the pressure rollers (4) is parallel to the central axis of the reel (3), and the plurality of pressure rollers (4) are used to limit the hose (01) to be arranged in a single layer in the spiral groove of the reel (3).

2. The special reel for the on-site mixed explosive conveying hose according to claim 1, wherein: 4 - 8 of the pressure rollers (4) are provided around the circumference of the reel (3), and the pressure rollers (4) are arranged at equal intervals in the circumferential direction.

3. The special reel for the on-site mixed explosive conveying hose according to claim 1, wherein: The pressure roller (4) includes a roller shaft and a roller barrel. The two ends of the roller shaft are fixed on the bracket (2), and the roller barrel is rotatably sleeved on the roller shaft.

4. The special reel for the on-site mixed explosive delivery hose according to claim 1, characterized in that: The driving device (5) is a hydraulic motor, a hydraulic motor with a speed reducer or an electric motor with a speed reducer.

5. The special reel for the on-site mixed explosive delivery hose according to claim 1, characterized in that: Rotary joints (1) and a main shaft (9) are respectively provided at both ends of the reel (3). The central axes of the reel (3), the rotary joint (1) and the main shaft (9) are collinear. The rotary joint (1) includes a fixed part (11) and a rotating part (12) that can rotate relative to each other, and the two are respectively fixedly connected to the bracket (2) and the reel (3). An explosive inlet is provided on the fixed part (11), and an explosive outlet is provided on the rotating part (12). The explosive outlet is communicated with the hose (01). One end of the main shaft (9) is fixedly connected to the reel (3), and the other end is rotatably inserted into the bracket (2).

6. The special reel for the on-site mixed explosive delivery hose according to claim 5, characterized in that: A rotary encoder (7) is provided on the bracket (2). A first transmission wheel (6) is installed on the main shaft (9), and a second transmission wheel (8) is installed on the shaft of the rotary encoder (7). The first transmission wheel (6) and the second transmission wheel (8) are in transmission connection.

7. The special reel for the on-site mixed explosive delivery hose according to claim 6, characterized in that: The first transmission wheel (6) and the second transmission wheel (8) are in transmission connection through a belt or a chain.

8. The special reel for the on-site mixed explosive delivery hose according to claim 5, characterized in that: A first additive delivery pipe (02) and a second additive delivery pipe (03) are laid inside the hose (01). The rotary joint (1) is a three-way rotary joint. The explosive inlet includes a semi-finished explosive inlet (1a), a first additive inlet (1b) and a second additive inlet (1c). The explosive outlet includes a semi-finished explosive outlet (1d), a first additive outlet (1e) and a second additive outlet (1f). The semi-finished explosive outlet (1d) is communicated with the hose (01), the first additive outlet (1e) is communicated with the first additive delivery pipe (02), and the second additive outlet (1f) is communicated with the second additive delivery pipe (03).

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