Sealed launching tube with guide rib structure

Abstract

The utility model belongs to the technical field of firework launching devices, and discloses a sealed launching tube with a guide rib structure, which comprises a cylindrical launching tube, at least one lead groove is arranged at the bottom of the launching tube, a grain is inserted into an inner cavity of the launching tube, and the diameter of the grain is smaller than the inner diameter of the launching tube. The position, located below the grain, of an inner cavity of the launching tube is filled with enough propellant powder, a lead of the grain extends into the propellant powder, and propellant powder leads with the number equal to that of the lead grooves are inserted into the propellant powder. According to the utility model, the two groups of ribs are adopted to clamp the grain, so that the grain is prevented from moving in the launching tube, no matter what angle the launching tube is located, the guide ribs I and the guide ribs II can clamp the guide ribs II with corresponding diameters, and paper does not need to be used for blocking the grain, so that the grain is prevented from being blocked by the guide ribs I and the guide ribs II. And the grain can also prevent the propellant powder from leaking out, no paper is used, and meanwhile the safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fireworks launching device technical field, more specifically, relate to the sealed launching tube with guide rib structure. BACKGROUND

[0002] Traditional fireworks cannon launching tube, often set up by straight cylinder, the launching tube of this structure has the defect, cannot directly seal and fix the propellant in the inner tube, therefore, need to install the paper sheet with hole or the netted plastic sheet on the propellant to fix the propellant, after filling the inner tube or the propellant column of high altitude explosion, to prevent the inner tube from falling out due to reverse placement during carrying and setting off, still need to add the paper sheet on the inner tube or the propellant column to block, with the progress of technology, the launching tube can adopt single taper die forming, due to the taper design of the launching tube inner cavity, can realize the automatic sealing and fixing of the propellant in the inner tube, need not install a paper sheet on the propellant again to fix.

[0003] But still exist the following problems: due to the taper design of the launching tube inner cavity, the propellant column can fall out due to the reverse placement of the launching tube during carrying and setting off, therefore, still need to increase the paper sheet on the propellant column to block, in view of this, we propose the sealed launching tube with guide rib structure. UTILITY MODEL CONTENT

[0004] 1. Technical problem to be solved

[0005] The utility model aims at providing the sealed launching tube with guide rib structure to solve the problem of still needing to increase the paper sheet on the propellant column to block in the background art.

[0006] 2. Technical scheme

[0007] The sealed launching tube with guide rib structure includes:

[0008] The launching tube is in the shape of a cylinder, an overall approximately cylindrical cavity is formed in the inside, at least one lead slot is formed in the bottom, a propellant column with a diameter smaller than the inner diameter of the launching tube is inserted into the inner cavity of the launching tube, enough propellant is filled in the position below the propellant column in the inner cavity of the launching tube, the lead of the propellant column extends into the propellant, propellant leads equal in number to the lead slots are inserted into the propellant, the propellant leads pass through the lead slots and extend to the outside of the launching tube;

[0009] At least one set of guiding ribs one and at least one set of guiding ribs two, each set of guiding ribs one comprises several guiding ribs one distributed equidistantly along the circumference of the inner wall of the launching tube, each set of guiding ribs two comprises several guiding ribs two distributed equidistantly along the circumference of the inner wall of the launching tube, meanwhile, the guiding ribs two and the guiding ribs one are distributed equidistantly, the length of the guiding ribs two is smaller than the length of the guiding ribs one, the thickness of the guiding ribs two is larger than the thickness of the guiding ribs one, the area surrounded by several guiding ribs one is used to hold the propellant grain with larger diameter, the area surrounded by several guiding ribs two is used to hold the propellant grain with smaller diameter.

[0010] Preferably, the launching tube is a member made of plastic, or a member made by traditional gypsum mould pressing, or a member made by paper pulp mould pressing.

[0011] Preferably, the guiding ribs one are arranged in one set, the number of the guiding ribs one in one set is four, and the four guiding ribs one are distributed along the circumference of the inner wall of the launching tube.

[0012] Preferably, the guiding ribs two are arranged in one set, the number of the guiding ribs two in one set is four, and the four guiding ribs two are distributed along the circumference of the inner wall of the launching tube.

[0013] Preferably, the launching tube comprises a launching part, a fixing part and an ignition part arranged in sequence from top to bottom and integrally formed, the launching part is a straight hollow cylindrical pipeline, the area of the fixing part is surrounded by several guiding ribs one distributed along the circumference, and the ignition part is located below the propellant grain.

[0014] Preferably, the lower part of the ignition part is surrounded by several guiding ribs two.

[0015] Preferably, the ignition part is composed of a cylinder wall and a cylinder wall, the cylinder wall contains propellant, and the cylinder wall is arranged obliquely at the position where the cylinder wall is connected to the fixing part upward and expands upward to form a limiting ring edge.

[0016] Preferably, the cylinder wall is thickened, and the thickness of the cylinder wall is larger than the thickness of the fixing part.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the utility model are that:

[0019] 1. The utility model discloses a guiding rib one and guiding rib two are set up two groups of ribs, under the premise of playing the strengthening support effect to the launching tube, compared with the mode that the paper sheet is set up on the column above to block the column of the traditional straight tube or single taper die forming cannon tube, adopts two groups of ribs to can clamp the column, avoids the movement of the column in the launching tube, no matter launching tube is in any angle, guiding rib one and guiding rib two can hold the guiding rib two of corresponding diameter, need not use the paper sheet to block the column, and the column also can block the leakage of propellant, do not use the paper sheet, improve security simultaneously.

[0020] 2. The utility model discloses guiding rib one and guiding rib two of different length and thickness, the guiding rib one of length longer, thickness thinner can hold the column of large diameter, the guiding rib two of length shorter, thickness bigger can hold the column of small diameter, simultaneously, the guiding rib two of length shorter is installed in the lower part of guiding rib one of length longer, to make guiding rib one and guiding rib two can hold in layers, hold the column of large diameter in the upper, but hold the column of small diameter in the lower, guiding rib one and guiding rib two do not hinder each other, to improve the applicability of whole structure to different diameter columns. DRAWINGS

[0021] Figure 1 It is whole structure schematic diagram of the utility model;

[0022] Figure 2 It is whole structure vertical section structure schematic diagram of the utility model;

[0023] Figure 3 It is part structure schematic diagram of the utility model vertical section;

[0024] Figure 4 It is the utility model Figure 3 It is structure enlarged schematic diagram of A place in the utility model;

[0025] Figure 5 It is structure schematic diagram when containing the column of small diameter of the utility model;

[0026] Figure 6 It is structure schematic diagram when containing the column of large diameter of the utility model;

[0027] Mark number explanation in drawing: 1, launching tube;2, column;3, guiding rib one;4, guiding rib two;5, lead groove;6, propellant lead;

[0028] 11, launching part;12, fixed part;13, ignition part;

[0029] 131, cylinder wall;132, limit ring edge. DETAILED DESCRIPTION

[0030] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited.

[0032] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] Please refer to Figures 1-6 The utility model provides a technical scheme:

[0034] The sealed launching tube with guide rib structure comprises:

[0035] The launching tube 1 is cylindrical, and a cavity with a cylindrical shape is formed in the inside, two lead grooves 5 are formed in the bottom, a propellant column 2 with a smaller diameter than the inner diameter of the launching tube 1 is inserted into the inner cavity of the launching tube 1, enough launching powder is filled in the position below the propellant column 2 in the inner cavity of the launching tube 1, the lead of the propellant column 2 extends into the launching powder, meanwhile, the same number of launching powder leads 6 as the number of the lead grooves 5 is inserted into the launching powder, the launching powder leads 6 pass through the lead grooves 5 and extend to the outside of the launching tube 1, the user ignites the launching powder leads 6, the launching powder leads 6 ignite the launching powder in the inside to generate thrust so as to push the propellant column 2 out along the inner cavity of the launching tube 1, and in this process, the launching powder ignites the lead at the same time, so that the launched propellant column 2 blooms;

[0036] At least one set of guide ribs one 3 and at least one set of guide ribs two 4, each set of guide ribs one 3 includes several guide ribs one 3 distributed equidistantly along the circumference of the side wall of the inner cavity of the launching tube 1, each set of guide ribs two 4 includes several guide ribs two 4 distributed equidistantly along the circumference of the side wall of the inner cavity of the launching tube 1, at the same time, the guide ribs two 4 and the guide ribs one 3 are distributed alternately, the length of the guide ribs two 4 is less than the length of the guide ribs one 3, the thickness of the guide ribs two 4 is greater than the thickness of the guide ribs one 3, the area surrounded by the several guide ribs one 3 is used to hold the larger diameter propellant 2, the area surrounded by the several guide ribs two 4 is used to hold the smaller diameter propellant 2, so that the launching tube 1 can be filled with propellants 2 of different diameters, of course, each launching tube 1 is still filled with only one propellant 2;

[0037] When the larger diameter propellant 2 is filled into the inner cavity of the launching tube 1, please refer to Figure 6 When the propellant 2 enters the area surrounded by the several guide ribs one 3, the guide ribs one 3 support the propellant 2, thereby limiting the propellant 2 at this position, it is worth mentioning that the outer part of the propellant 2 is generally made of yellow board paper, kraft paper, moisture-proof paper, firework paper and other materials, which has a certain deformation ability, therefore, when the bottom end of the propellant enters the top end of the area surrounded by the several guide ribs one 3, it can still move downward under the action of gravity or external force applied from above until the entire propellant 2 is clamped by the guide ribs one 3;

[0038] Since the thickness of the guide ribs one 3 is less than that of the guide ribs two 4, the smaller diameter propellant 2 will not be limited when passing through the area surrounded by the guide ribs one 3, and will be clamped when entering the area surrounded by the guide ribs two 4, please refer to the attached drawings Figure 5 , so that the launching tube 1 can accommodate launching tubes 1 of different diameters, at the same time, the design of the guide ribs one 3 and the guide ribs two 4 plays the role of reinforcing ribs, improves the stability of the overall structure of the launching tube 1 and improves the stability of the launching tube 1 during use.

[0039] Please refer to the attached drawings Figure 2The structure of the launching tube 1 in the embodiment is specifically described as follows: the launching tube 1 comprises a launching portion 11, a fixing portion 12 and an ignition portion 13 which are sequentially arranged from top to bottom and integrally formed, the inner cavities of the three portions are communicated, the launching portion 11 is a straight hollow cylindrical pipeline through which the propellant column 2 is launched, the top end of the launching portion 11 is provided with a sealing paper seal, the fixing portion 12 is surrounded by a plurality of circumferential arrays of guiding ribs 3, the upper part of the fixing portion 12 is used for clamping the propellant column 2 with a larger diameter, the lower part of the fixing portion 12 is surrounded by the circumferential arrays of guiding ribs 4 and is used for limiting the propellant column 2 with a smaller diameter, and the ignition portion 13 is located below the propellant column 2 and is mainly used for filling the launching charge, and the length of the ignition portion 13 is designed according to the amount of the launching charge of the propellant column 2.

[0040] Please refer to the drawings in the description Figures 3-4 The structure of the ignition portion 13 in the embodiment is further described as follows: the ignition portion 13 is composed of a cylinder wall 131 and the cylinder wall 131, the cylinder wall 131 is provided with a thickened cylinder wall and has a thickness greater than that of the fixing portion 12, the position where the cylinder wall 131 is connected to the fixing portion 12 is obliquely arranged and upwardly expanded to form a limiting ring edge 132, the limiting ring edge 132 can also limit the propellant column 2, the cylinder wall 131 is used for containing the launching charge, the thicker wall thickness can withstand the shock wave formed by the ignition of the launching charge, has stronger anti-explosion property, effectively reduces the risk of a burst chamber, and specifically, the inner diameter of the cylinder wall 131 is smaller than the diameter of the region surrounded by the plurality of guiding ribs 4, when the propellant column 2 with a smaller diameter passes through the region surrounded by the guiding ribs 4, the propellant column 2 does not contact the guiding ribs 4, therefore, the guiding ribs 4 do not clamp the propellant column 2, but the bottom end of the propellant column 2 abuts against the limiting ring edge 132, at this time, the limiting ring edge 132 supports and limits the propellant column 2 with a smaller diameter, and the propellant column 2 is launched by the launching charge filled in the cylinder wall 131.

[0041] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A sealed launching tube with a guide rib structure, characterized in that, include: The launch tube (1) is cylindrical, with an overall approximately cylindrical cavity inside. At least one lead groove (5) is opened at the bottom. A propellant column (2) with a diameter smaller than the inner diameter of the launch tube (1) is inserted into the cavity of the launch tube (1). Sufficient propellant is filled in the cavity of the launch tube (1) below the propellant column (2). The lead of the propellant column (2) extends into the propellant. The number of propellant leads (6) is equal to the number of lead grooves (5) inserted into the propellant. The propellant leads (6) pass through the lead grooves (5) and extend to the outside of the launch tube (1). At least one set of guide ribs one (3) and at least one set of guide ribs two (4). Each set of guide ribs one (3) includes several guide ribs one (3) distributed equidistantly along the circumference of the inner wall of the firing tube (1). Each set of guide ribs two (4) includes several guide ribs two (4) distributed equidistantly along the circumference of the inner wall of the firing tube (1). At the same time, the guide ribs two (4) and the guide ribs one (3) are distributed at intervals. The length of the guide ribs two (4) is less than the length of the guide ribs one (3). The thickness of the guide ribs two (4) is greater than the thickness of the guide ribs one (3). The area formed by the surrounding of several guide ribs one (3) is used to clamp the larger diameter propellant column (2). The area formed by the surrounding of several guide ribs two (4) is used to clamp the smaller diameter propellant column (2).

2. The sealed launching tube with guide rib structure according to claim 1, characterized in that: The launching tube (1) is a component made of plastic, or a component made of traditional plaster molding, or a component made of pulp molding.

3. The sealed launching tube with guide rib structure according to claim 1, characterized in that: The guide ribs (3) are arranged in a set of four, and the four guide ribs (3) are distributed in a circumferential array along the inner wall of the transmitter tube (1).

4. The sealed launching tube with guide rib structure according to claim 1, characterized in that: The guide ribs (4) are arranged in a set of four, and the four guide ribs (4) are arranged in a circumferential array along the inner wall of the transmitter tube (1).

5. The sealed launching tube with guide rib structure according to claim 1, characterized in that: The launching tube (1) includes a launching part (11), a fixing part (12) and an ignition part (13) arranged sequentially from top to bottom and integrally formed. The launching part (11) is a straight hollow cylindrical pipe. The area of ​​the fixing part (12) is formed by a circular array of several guide ribs (3). The ignition part (13) is located below the propellant column (2).

6. The sealed launching tube with guide rib structure according to claim 5, characterized in that: The lower part of the ignition part (13) is an area formed by several guide ribs (4).

7. The sealed launching tube with guide rib structure according to claim 5, characterized in that: The ignition part (13) is composed of a cylinder wall (131) and a cylinder wall (132). The cylinder wall (131) contains the propellant. The cylinder wall (131) is inclined at the position where it is connected to the fixing part (12) and expands upward to form a limiting ring edge (132).

8. The sealed launching tube with guide rib structure according to claim 7, characterized in that: The cylinder wall (131) is thickened, and its thickness is greater than that of the fixing part (12).

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