A propellant charge volume setting device

Abstract

The application discloses a propellant charging constant-volume device, which can realize online adjustment of the volume of a metering cavity, and through two-stage transmission amplification of a circumferential wedge surface and a spiral micrometer head, the adjustment accuracy of 2mm 3 can be achieved; the volume of the constant-volume hole can be adjusted online without replacing a mold and a template, and the propellant charge can be finely adjusted according to the charging result to reach the required charging qualified range. The design of two groups of four constant-volume holes matches with a rotatable angle positioning and control driving system, and the propellant charging of two types of products can be realized through the control of a program software without replacing the constant-volume container, which provides the possibility of flexible production for a production line and reduces the labor quantity of manual replacement and assembly during the production change of the flexible production line; each constant-volume hole can be adaptively adjusted according to the charging environment provided in the actual charging process, so that the charging results of two constant-volume holes in each group are close to each other.

Description

Technical Field

[0001] This invention relates to the field of weapon barrel propellant loading technology, and in particular to a propellant loading and volume control device that can finely adjust the volume of the calibrating orifice without disassembling parts, and achieve time-sharing and co-line production of two different products by simply switching between them through program settings. Background Technology

[0002] Currently, volumetric propellant loading technology is widely used in the mass production of military ammunition, small-caliber artillery shells, and pyrotechnics. After more than a decade of upgrades and improvements, volumetric propellant loading technology can achieve a 95% propellant loading qualification rate. Its modified single-plate multi-metering-hole structure has made an indelible contribution to the improvement of my country's military production by significantly increasing production efficiency. With the automation of my country's military production, the PLA has also placed higher technical requirements on the barrel weapons it uses, demanding precision strikes and efficient damage from ammunition. Controlling the propellant charge plays a crucial role in the precision strike of ammunition. Automatic propellant loading requires greater precision, higher loading efficiency, and the ability to adapt to the co-production of multiple types of ammunition.

[0003] When modifying the metering cavity of a volumetric propellant loading system, the entire metering plate is typically replaced for adjustment. Military production units usually prefabricate several metering plates of varying sizes, arranged in a geometric sequence, based on practical production experience and the properties of each batch of propellant supplied by the magazine. Before formal production begins, production personnel, based on experience, select one metering plate for trial loading. The propellant from the trial load is then poured out and weighed again using an electronic balance to verify and determine if the selected metering plate is suitable for this batch of propellant. If the re-weighing test is unsatisfactory, the production personnel must empty the propellant from the magazine and, based on the re-weighing results, select a suitable metering plate for installation, trial production, and re-weighing. Typically, experienced production personnel can select a suitable metering plate for this batch of propellant within two attempts. However, some technicians have innovatively designed modifications to the metering cavity, such as designing and machining a stepped hole on the metering plate, with the metering cavity designed as a detachable and replaceable part. The external part of the part matches the stepped hole, while the internal part can be machined with metering holes according to production needs. In addition, increasing the number of metering holes on the metering plate can improve the efficiency of drug loading.

[0004] The volumetric loading technology using metering plates typically requires determining the metering orifice volume based on the bulk dry density of the propellant and the desired mass. However, this volumetric loading method results in a random, dense packing of the propellant particles, and the mass of the loaded propellant is affected by the granulation process of the propellant itself, the loading conditions provided by the equipment (fall height, vibration conditions, loading intensity, etc.), and the metering orifice volume. Currently, the practical approach is to keep the loading conditions provided by the equipment constant and configure metering plates with corresponding volumes based on the properties of each batch of propellant. The fabrication of metering plates also has high requirements; prefabricating a large number of metering plates is time-consuming, labor-intensive, and results in significant material waste. Although subsequent improvements to metering orifice components can save some material costs, a large number of spare parts still need to be prefabricated to accommodate different batches of propellant.

[0005] As mentioned earlier, the volumetric propellant loading technology using a metering plate cannot achieve online adjustment of the volume. Each trial production run requires emptying the propellant from the propellant magazine, disassembling the press-fit components, and then replacing the metering plate or metering orifice parts to adjust the size of the metering container. This adjustment method is quite cumbersome for daily production.

[0006] Generally speaking, a metering plate volumetric loading device is driven by a double-acting cylinder, and the metering plate can only be stopped at two positions. Therefore, without replacing the metering plate, it is impossible to complete the production of a different type of drug.

[0007] Due to the structural requirements of the metering plate itself, during the propellant loading and volume setting station, the metering hole is connected to the propellant chamber. Then, the plate moves to shear the propellant through the metering hole and the propellant chamber. During this movement, the metering through hole within the metering plate forms a sealed loading space with the upper and lower parts' surfaces until the discharge station, where the metering hole connects to the discharge hole of the lower part. This structure places high processing requirements on both the upper and lower mating surfaces of the metering plate. Furthermore, as production progresses and the surfaces of the metering plate and the upper and lower parts wear down, the gap between the two mating surfaces gradually increases, causing the propellant to become stuck in the mating surfaces and reducing loading accuracy.

[0008] While adding metering holes to the same metering plate can significantly improve loading efficiency, the external loading environment (fall height, vibration conditions, loading intensity, etc.) provided by the equipment for the same metering plate is consistent. However, different metering holes on the same metering plate will result in differences in loading due to variations in processing, assembly, and location. Furthermore, these metering holes cannot be independently adjusted to adapt to differences in external conditions, leading to loading deviations even between different metering holes from the same metering plate.

[0009] Therefore, how to provide a container that allows for fine adjustment of the volume of the calibrated orifice without disassembling the components is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0010] In view of the above problems, the present invention provides a propellant loading and volume control device for overcoming or at least partially solving the above problems. It allows for fine adjustment of the volume control orifice volume without disassembling components, achieving an adjustment accuracy of up to 2mm. 3 The volume of the fixed-volume orifice can be adjusted online without replacing the mold or template. The amount of propellant loaded can be finely adjusted according to the loading result to achieve the required loading range.

[0011] This invention provides the following solution:

[0012] A propellant loading and volume control device, comprising:

[0013] A fixed container column is provided with a fixed volume hole on the side circumference of the fixed container column, the axis of which extends perpendicular to its axial direction. The fixed container column is also provided with an adjustment through hole extending along its axial direction, and the adjustment through hole communicates with the interior of the fixed volume hole.

[0014] A volume-fixing cavity bottom slider is disposed within the volume-fixing hole and connected to the bottom of the volume-fixing hole via a first return spring; the volume-fixing cavity bottom slider is provided with a slider through hole opposite to the adjustment through hole;

[0015] An adjusting slider is freely disposed within the through hole of the slider. One end of the adjusting slider is provided with a second return spring, and the other end of the adjusting slider is connected to a micrometer screw.

[0016] The slider through hole and the adjusting slider both have a circumferential wedge-shaped surface structure. The micrometer screw is used to control the adjusting slider to move inward or outward so as to drive the bottom slider of the fixed volume cavity to move in the depth direction of the fixed volume hole to adjust the volume of the fixed volume hole.

[0017] Preferably, the device further includes a front mounting panel and a rear mounting panel, the front mounting panel and the rear mounting panel being connected to the two end faces of the fixed container column respectively, the second reset spring being connected to the rear mounting panel, and the micrometer screw extending to the outside of the front mounting panel.

[0018] Preferably, the front mounting panel and the rear mounting panel are connected by a plurality of drive pins.

[0019] Preferably, the front mounting panel is provided with a handle.

[0020] Preferably, one end face of the transmission pin is provided with an inwardly stepped structure, and the transmission pin passes through the inwardly stepped hole on the rear mounting panel to install the rear mounting panel into the positioning recess on one end face of the fixed container column; the other end face of the transmission pin is provided with a threaded hole, which is used to connect with an external mounting screw that passes through the threaded mounting through hole on the handle and the front mounting panel.

[0021] Preferably, a spring mounting seat is provided on the inner side of the fixed container column, which is coaxially arranged with the fixed container column, and the first reset spring is connected to the spring mounting seat.

[0022] Preferably, the inner side of the spring mounting base is provided with a connecting through hole extending along its axial direction, the connecting through hole being used to connect to the drive shaft.

[0023] Preferably, the fixed container column is provided with at least two O-rings extending circumferentially along its side surface.

[0024] Preferably, the volume-fixing holes include two sets, each set containing two volume-fixing holes, and each volume-fixing hole is connected to a volume-fixing cavity bottom slider and an adjustment slider.

[0025] Preferably, the two calibrating holes in the same group are arranged at a 140° angle.

[0026] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0027] This application provides a propellant loading and volume control device that allows for online adjustment of the metering cavity volume. Furthermore, through a two-stage transmission amplification using a circumferential wedge surface and a spiral micrometer head, it can achieve a magnification of 2mm. 3 The adjustment accuracy is high; the volume of the fixed-volume orifice can be adjusted online without replacing the mold or template. The amount of propellant loaded can be finely adjusted according to the loading result to achieve the required loading range.

[0028] In addition, in the preferred embodiment, the design of two sets of four fixed-volume orifices, matched with a drive system that can be rotated for positioning and control, allows for the loading of propellants for two types of products through software control without changing the fixed container. This provides the possibility for flexible production lines and reduces the amount of manual reassembly required when changing products on flexible production lines. Each fixed-volume orifice can be adaptively adjusted according to the loading environment provided during the actual loading process, so that the loading results of each set of two fixed-volume orifices are close.

[0029] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0031] Figure 1 This is a schematic diagram of a propellant loading and volume control device provided in an embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional view of a propellant loading and volume control device provided in an embodiment of the present invention;

[0033] Figure 3 This is another cross-sectional view of a propellant loading and volume control device provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the propellant loading and volume control device in use according to an embodiment of the present invention.

[0035] In the figure: volume control device 100, charging chamber 200, feeding funnel 300, discharging funnel 400, driving mechanism 500;

[0036] 1. Fixed container column, 2. Fixed volume hole, 3. Fixed volume cavity bottom slider, 4. First return spring, 5. Adjusting slider, 6. Second return spring, 7. Micrometer screw, 8. Front mounting panel, 9. Rear mounting panel, 10. Transmission pin, 11. Handle, 12. Spring mounting seat, 13. O-ring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0038] See Figure 1 , Figure 2 This invention provides a propellant loading and volume control device, such as... Figure 1 , Figure 2 As shown, the volume-regulating device 100 may include:

[0039] A fixed container column 1 is provided with a fixed volume hole 2 on the side circumference of the fixed container column 1, the axis of which extends perpendicular to its axial direction. The fixed container column 1 is also provided with an adjustment through hole extending along its axial direction, and the adjustment through hole communicates with the interior of the fixed volume hole 2.

[0040] The volume-fixing cavity bottom slider 3 is disposed inside the volume-fixing hole 2 and connected to the bottom of the volume-fixing hole 2 through a first return spring 4; the volume-fixing cavity bottom slider 3 is provided with a slider through hole opposite to the adjustment through hole;

[0041] Adjusting slider 5, which is freely disposed in the through hole of the slider, is provided with a second return spring 6 at one end of the adjusting slider 5, and the other end of the adjusting slider 5 is connected to the micrometer screw head 7;

[0042] The slider through hole and the adjusting slider 5 both have a circumferential wedge-shaped surface structure. The micrometer screw 7 is used to control the adjusting slider 5 to move inward or outward, so as to drive the bottom slider 3 of the fixed volume cavity to move in the depth direction of the fixed volume hole 2 to adjust the volume of the fixed volume hole 2.

[0043] The propellant loading and volume control device provided in this embodiment has a volume control hole 2 with a volume control bottom slider inside. A micrometer screw head 7 drives an adjusting slider 5 to move left and right. Because the contact area between the adjusting slider 5 and the volume control bottom slider has a circumferential wedge-shaped surface structure, the adjusting slider 5 can provide force to the volume control bottom slider along the axial direction of the volume control cylinder 1 and perpendicular to the volume control cylinder 1. Under the limiting action of the inner wall of the volume control hole 2, the volume control bottom slider can only move along the direction perpendicular to the axial direction of the volume control cylinder 2 (the depth direction of the volume control hole 2), ultimately achieving adjustment of the internal volume of the volume control hole 2. That is, the volume of the volume control hole 2 is adjusted by the micro-displacement of the volume control bottom slider 3, and the adjustment is transmitted through the micrometer screw head and the circumferential wedge-shaped surface. Since the micrometer screw head 7 is located outside the main body, the volume of the volume control hole 2 can be finely adjusted without disassembling the components, and the adjustment accuracy of the volume control hole volume can reach 2mm. 3 .

[0044] To facilitate the installation of various components, this application embodiment may also provide a front mounting panel 8 and a rear mounting panel 9, which are respectively connected to the two end faces of the fixed container column. The second reset spring 6 is connected to the rear mounting panel 9, and the micrometer screw 7 extends to the outside of the front mounting panel 8.

[0045] To facilitate the connection between the front mounting panel 8 and the rear mounting panel 9, and to ensure that the connector does not affect the setting of other components, this embodiment of the application may also provide that the front mounting panel 8 and the rear mounting panel 9 are connected by a plurality of transmission pins 10.

[0046] To facilitate gripping, installation, and disassembly of the device, this embodiment of the application may also provide a handle 11 on the front mounting panel 8. Specifically, one end face of the transmission pin 10 is provided with an inwardly recessed step structure, and the transmission pin 10 passes through the inwardly recessed hole on the rear mounting panel 9 to install the rear mounting panel 9 into the positioning recess on one end face of the fixed container column 1; the other end face of the transmission pin 10 is provided with a threaded hole, which is used to connect with an external mounting screw that passes through the handle 11 and the threaded mounting through hole on the front mounting panel 8.

[0047] To facilitate the installation of the first return spring 4, this embodiment of the application may also provide a spring mounting seat 12 arranged coaxially with the fixed container column 1 on the inner side of the fixed container column, and the first return spring 4 is connected to the spring mounting seat 12.

[0048] The rotation of the fixed container column 1 allows the fixed volume orifice 2 to move between the feeding mechanism and the discharging mechanism. After the feeding mechanism fills the propellant into the fixed volume orifice 2, the rotation of the fixed container column 1 transfers the propellant to the discharging mechanism, ultimately filling the weapon barrel with a measured amount of propellant. For ease of connection to the drive mechanism, this embodiment also provides a connecting through hole extending axially on the inner side of the spring mounting base 12, which is used to connect to the drive shaft.

[0049] To prevent leakage of propellant when the device is connected to the propellant chamber during use, this embodiment of the application may also provide that the fixed container column 1 is provided with at least two O-rings 13 extending circumferentially along its side.

[0050] To enable the device provided in this application embodiment to meet the needs of two different product loading requirements, this application embodiment can provide that the volume-fixing holes 2 include two sets, each set containing two volume-fixing holes 2, and each volume-fixing hole 2 is connected to a volume-fixing cavity bottom slider 3 and an adjusting slider 5. Specifically, the two volume-fixing holes 2 in the same set are arranged at a 140° angle.

[0051] The volume-fixing device provided in this application embodiment can be designed with two groups of four volume-fixing holes, with each group of two volume-fixing holes spaced 140° apart. It can complete the conversion of two types of weapon ammunition charges without replacing any parts. Each volume-fixing hole is equipped with an independent micro-adjustment mechanism, which can be adaptively adjusted according to the charging environment provided during the actual charging process, so that the charging results of each group of two volume-fixing holes are close.

[0052] As can be seen, the propellant loading and volume control device provided in this application embodiment allows the volume of the volume control hole 2 to be adjusted by the up-and-down micro-displacement of the slider 3 at the bottom of the volume control cavity. The adjustment is transmitted through the spiral micro-head and the circumferential wedge surface. The volume of the volume control cavity can be adjusted online, and the two sets of four volume control holes 2 can be adjusted independently. The design of the two sets of four volume control holes 2 not only solves the problem of changing the mold when switching between two products, but also solves the manufacturing difficulty in the subtractive processing.

[0053] The structure and usage of the propellant loading and volume-fixing device provided in this application embodiment are described in detail below, taking the setting of 2 groups of 4 volume-fixing holes as an example.

[0054] like Figure 1 , Figure 2 , Figure 3 As shown, the device may include a fixed container column 1, a front mounting panel 8, a rear mounting panel 9, two drive pins 10, two O-rings 13, a spring seat, two fixed volume chamber bottom sliders 3a and 3b, two adjusting sliders 5a and 5b, two fixed volume holes 2a and 2b, a second return spring 6, a first return spring 4, a micrometer screw head 7, and a handle 11.

[0055] The connection relationships are as follows:

[0056] The volume-fixing cavity bottom slider 3 and the adjusting slider 5 are divided into two groups of four, namely groups a and b. The volume-fixing cavity bottom slider 3 and the adjusting slider 5 of the same group are installed in adjacent 140° volume-fixing holes 2 of the volume-fixing container column 1. Specifically, the volume-fixing cavity bottom slider 3a and the volume-fixing cavity bottom slider 3a are installed in the volume-fixing holes 2a perpendicular to the arc surface of the volume-fixing container column 1. The bottom of the volume-fixing cavity bottom slider 3a and the volume-fixing cavity bottom slider 3a are equipped with a first return spring 4, which is installed in the spring cavity on the spring seat. The spring seat is coaxially installed with the volume-fixing container column 1. Two drive pins 10 are installed on both sides of the spring seat. One end face of the drive pin 10 is an inward step, which passes through the inward hole on the rear mounting panel 9 and installs the rear mounting panel 9 into the positioning recess on one end face of the volume-fixing container column 1. The other end face of the drive pin 10 is a threaded hole, and the external mounting screw is connected to the drive pin 10 through the handle 11 and the threaded mounting through hole on the front mounting panel 8. The front mounting panel 8 is installed in the positioning recess on the other side of the fixed container. A handle 11 and a micrometer screw head 7 are installed on the outer side. Adjusting sliders 5a and 5b are respectively installed inside the micrometer screw head 7. Adjusting sliders 5a and 5b pass through the bottom sliders 3a and 3b of the fixed volume cavity and are connected to the second return spring 6 on the rear mounting panel 9. The cylindrical surface of the fixed container 1 has two sealing ring grooves, in which O-rings 13 are installed.

[0057] The work process is described as follows:

[0058] Under the pressure of the first return spring 4, the bottom sliders 3a and 3b of the fixed-volume cavity return to their original position in the direction outward from the axis of the fixed-volume cylinder 1. The inner holes of the bottom sliders 3a and 3b are closed by the contact limiting effect of the adjusting sliders 5a and 5b. Under the pressure of the second return spring 6, the adjusting sliders 5a and 5b return to their original position in the direction of the front mounting panel 8, and their other ends contact the micrometer head 7 to form a closed force. Twisting the micrometer head 7 causes its tip to extend inward or outward. In conjunction with the second return spring 6, the adjusting sliders 5a and 5b slide within the fixed-volume cylinder 1, thereby causing the bottom sliders 3a and 3b of the fixed-volume cavity to slide within the fixed-volume hole 2, thus adjusting the depth of the fixed-volume hole 2 and consequently adjusting its volume.

[0059] See Figure 4 In use, the volume-fixing device 100 provided in this application embodiment needs to be rotatably installed in the transverse through hole of the propellant loading cavity 200. After the volume-fixing column 1 is rotated relative to the propellant loading cavity 200 to a first position under the drive mechanism 500, the volume-fixing hole 2 is aligned with and connected to the propellant injection column below the feeding funnel 300, so that the propellant supplied by the injection column enters the volume-fixing hole 2. After the volume-fixing column 1 rotates away from the first position relative to the propellant loading cavity 200, the propellant in the volume-fixing hole 2 is discharged into the weapon barrel through the propellant flow channel and the discharge funnel 400. The two volume-fixing holes 2 in the same group can achieve alternating feeding and discharging, thereby improving the overall working efficiency of the device.

[0060] In summary, the propellant loading and volume control device provided in this application can achieve online adjustment of the volume of the metering cavity, and through a two-stage transmission amplification using a circumferential wedge surface and a spiral micrometer head 7, it can achieve a magnification of 2mm. 3 The adjustment accuracy is high; the volume of the fixed volume hole 2 can be adjusted online without replacing the mold or template. The amount of propellant loaded can be finely adjusted according to the loading result to reach the required loading range.

[0061] As a preferred design, the two sets of four fixed-volume holes 2 are matched with a drive system that can be rotated for positioning and control. Without changing the fixed container, the propellant loading of the two types of products can be achieved through the control of the program software. This provides the possibility for flexible production line and reduces the amount of manual replacement and assembly work when changing products on the flexible production line. Each fixed-volume hole 2 can be adaptively adjusted according to the loading environment provided during the actual loading process so that the loading results of each set of two fixed-volume holes 2 are close.

[0062] Preferably, the fixed container column 1, which is assembled with the fixed volume cavity bottom slider 3a, the fixed volume cavity bottom slider 3b and the adjusting slider 5a, the adjusting slider 5b, all have through holes. For traditional subtractive manufacturing methods, this facilitates the realization of processing and manufacturing, and makes it easier to improve processing accuracy and surface roughness.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0065] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and relevant parts can be referred to the descriptions in the method embodiments. The systems and system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A propellant loading and volume control device, characterized in that, include: A fixed container column is provided with a fixed volume hole on the side circumference of the fixed container column, the axis of which extends perpendicular to its axial direction. The fixed container column is also provided with an adjustment through hole extending along its axial direction, and the adjustment through hole communicates with the interior of the fixed volume hole. A volume-fixing cavity bottom slider is disposed within the volume-fixing hole and connected to the bottom of the volume-fixing hole via a first return spring; the volume-fixing cavity bottom slider is provided with a slider through hole opposite to the adjustment through hole; An adjusting slider is freely disposed within the through hole of the slider. One end of the adjusting slider is provided with a second return spring, and the other end of the adjusting slider is connected to a micrometer screw. The slider through-hole and the adjusting slider both have a circumferential wedge-shaped surface structure. The micrometer screw is used to control the adjusting slider to move inward or outward, so as to drive the volume-fixing cavity bottom slider to move in the depth direction of the volume-fixing hole to adjust the volume of the volume-fixing hole. The volume-fixing holes include two groups, each group containing two volume-fixing holes. Each volume-fixing hole is connected to a volume-fixing cavity bottom slider and an adjusting slider. The two volume-fixing holes in the same group are set at a 140° included angle.

2. The propellant loading and volume control device according to claim 1, characterized in that, It also includes a front mounting panel and a rear mounting panel, which are respectively connected to the two end faces of the fixed container column. The second reset spring is connected to the rear mounting panel, and the micrometer screw extends to the outside of the front mounting panel.

3. The propellant loading and volume control device according to claim 2, characterized in that, The front mounting panel and the rear mounting panel are connected by several drive pins.

4. The propellant loading and volume control device according to claim 3, characterized in that, The front mounting panel is equipped with a handle.

5. The propellant loading and volume control device according to claim 4, characterized in that, One end face of the transmission pin is provided with an inward step structure. The transmission pin passes through the inward hole on the rear mounting panel to install the rear mounting panel into the positioning recess on one end face of the fixed container column. The other end face of the transmission pin is provided with a threaded hole, which is used to connect with an external mounting screw that passes through the threaded mounting through hole on the handle and the front mounting panel.

6. The propellant loading and volume control device according to claim 1, characterized in that, A spring mounting seat is provided on the inner side of the fixed container column, and the first reset spring is connected to the spring mounting seat.

7. The propellant loading and volume control device according to claim 6, characterized in that, The inner side of the spring mounting base is provided with a connecting through hole extending along its axial direction, and the connecting through hole is used to connect to the drive shaft.

8. The propellant loading and volume control device according to claim 1, characterized in that, The fixed container column is provided with at least two O-rings extending circumferentially along its side.

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