CN205067104U - Inside multiple spot of storepipe is multidimension power conversion load mechanism among a small circle - Google Patents

Abstract

The utility model provides a multi-point, small-range and multi-dimensional force conversion loading mechanism inside the rocket shell, including a force conversion mechanism and a force synthesis mechanism; the force conversion mechanism acts on each separated slide block on the I and IV quadrants ( 1) Above; two sets of force synthesis mechanisms are symmetrically arranged, and each set is connected to three sets of force conversion mechanisms on one side. The advantage of this utility model is that most of the components used in the loading mechanism can be found from the existing common loading system components, such as a large number of used pull rods and single and double ears. And other levers that have strict requirements on specific dimensions can also be easily processed, and the complex loading can be realized by recombining these existing parts, which can greatly save the test cost. And this combination method can be applied in other similar experiments through simple adjustment and recombination, and has a relatively wide application range.

Description

Multi-point and small-scale multi-dimensional force conversion loading mechanism inside the rocket shell

technical field

The utility model belongs to the technical field of aerospace and aviation, and in particular relates to a multi-point and small-range multi-dimensional force conversion loading mechanism inside a rocket shell.

Background technique

In static tests, when we examine the strength or stiffness of a structure under static loads, we usually use a loading system to apply tension or compression in a single direction. The loading system includes a fixedly installed loading base, a loading cylinder, The force transmission structure has three parts, and these parts will take up a lot of space, so there needs to be enough space in the direction of the force line of the loading point to arrange the loading system. However, when multi-dimensional forces in multiple directions need to be applied in a small space, traditional methods are powerless.

In the separation slider test condition of the static test of the front shell structure of a certain type of rocket, it is necessary to apply pressure in one or two directions to the separation slider in the front shell. The separation slider is located in the cone section shell with a diameter of about 1600mm. wall, the separation sliders are distributed in three groups with equal intervals in the axial direction of the shell, and each group has four separation sliders, as shown in Figure 1; the separation sliders are symmetrically distributed in the circumferential direction of the cone section shell as shown in Figure 2, where The angle between the separation sliders of the first and second quadrants is 60 degrees, and the same is true for the third and fourth quadrants. It is required that the separation slider group close to the I quadrant applies tangential and radial pressure, and the separation slider group close to the III quadrant only applies tangential pressure, that is, 18 separation sliders are applied at 12 separation slider positions inside the housing with a diameter of 1600mm. Direction of force, as shown in Figure 2.

The traditional method uses a ball-and-socket structure to apply pressure, that is, a loading tool with a ball-and-socket structure is wrapped on the separation slider, and then the ball-and-socket structure is used to apply pressure. However, when applying tangential and radial pressure on the separation slider at the same time, due to the relatively small structural size of the slider, it is difficult to arrange two loading fixtures with ball-and-socket structures at the same time, and the traditional method requires With sufficient space, when the slider exerts a tangential pressure, due to the influence of the inner wall of the housing, it is also impossible to arrange the loading system that exerts this force.

Contents of the invention

The purpose of the utility model is to overcome the defects of the prior art, and to provide a force loading and conversion mechanism suitable for applications with a lot of force and a small space.

In order to achieve the above object, the technical solution of the present invention is a multi-point, small-scale and multi-dimensional force conversion loading mechanism inside the rocket shell, including a force conversion mechanism and a force synthesis mechanism; wherein, there are six sets of force conversion mechanisms, Both are lever structures, which act on each separation slider on the I and IV quadrants respectively; one end of the conversion lever of the force conversion mechanism is matched with the ball socket on the separation slider through the ball head; the other end of the conversion lever is set to apply Force single ear, the upper end of the fulcrum single ear is fixed on the conversion lever as the fulcrum of the force conversion mechanism; the lower end of the fulcrum single ear is connected and fixed with the fulcrum column block through the double ears; the two fulcrum column blocks are axially fixed and arranged in the cone section shell On both sides of the space inside the wall, each fulcrum column block is used to support the three sets of force synthesis mechanisms of the three separated sliders on the side; there are two sets of force synthesis mechanisms symmetrically, and each set is connected to the three sets of force synthesis mechanisms on one side. Transformation mechanism; each set of force synthesis mechanism includes a primary lever and a secondary lever. The ears are respectively connected with the power-applying single ears of the power conversion mechanism of the first two separated sliders on the I quadrant; Three pairs of ears, the third pair of ears is connected with the power-applying single ear of the power conversion mechanism of the last separation slider on the first quadrant; the first-level lever is provided with a synthetic single ear, and the position distance of the synthetic single ear is set to the third The length L32 of the two ears is twice the length L31 of the position where the synthetic single ear is set and the position of the single double ear mechanism connected with the secondary lever; connection; the fixed column block is axially fixedly arranged at the lower position in the middle of the space of the inner wall of the cone section shell.

For the 2 sets of 6 separation sliders in the second and third quadrants, each separation slider is also provided with a force conversion mechanism; the 3 sets of force conversion mechanisms on the same side are combined through a set of force synthesis mechanism; The power conversion mechanism and the synthesis mechanism of the power of the separation slider close to the third quadrant are the same as the structure and arrangement of the power conversion mechanism of the separation slider close to the I quadrant; the difference is that the separation slider close to the third quadrant The synthesizing monaural of the force synthesizing mechanism is connected with the external actuator fixed on the ground.

The advantage of this utility model is that most of the components used in the loading mechanism can be found from the existing common loading system components, such as a large number of used pull rods and single and double ears. And other levers that have strict requirements on specific dimensions can also be easily processed, and the complex loading can be realized by recombining these existing parts, which can greatly save the test cost. And this combination method can be applied in other similar experiments through simple adjustment and recombination, and has a relatively wide application range.

Description of drawings

Figure 1 is a cross-sectional view of the cone section housing and the separation slider.

Figure 2 is a top view of the cone section shell.

Figure 3 is a schematic diagram of the force conversion mechanism.

Fig. 4 is a schematic diagram of a force synthesis mechanism.

Fig. 5 is a schematic diagram of the implementation state of the utility model.

In the figure, 1-separation slider, 2-cone shell inner wall, 3-transformation lever, 4-ball head, 5-fulcrum single ear, 6-force application single ear, 7-two ears, 8-fulcrum column block , 9- fixed column block, 10- internal actuator, 11- external actuator, 12- primary lever, 13- secondary lever, 14- first double ear, 15- second double ear, 16- the first Three pairs of ears, 17-synthetic monaural.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

A multi-point, small-scale and multi-dimensional force conversion loading mechanism inside the rocket shell, including a force conversion mechanism and a force synthesis mechanism; among them, there are six sets of force conversion mechanisms, all of which are lever structures, as shown in Figure 3. On each separation slider 1 on the first and fourth quadrants; one end of the conversion lever 3 of the force conversion mechanism is matched with the ball socket on the separation slider 1 through the ball head 4, and the pressure load F1 is applied to the separation slider 1, The F1 is the resultant force of the radial load and the tangential load of the separation slider 1; the other end of the conversion lever 3 is provided with a single lug 6 for applying force, and a pulling force F2 is applied through the single lug 6 for applying force, and the upper end of the single lug 5 of the fulcrum is fixed on the conversion On the lever 3, as the fulcrum of the force conversion mechanism, the distance between its fixed position and the F1 force application point is L1, and the distance from the F2 force application point is L2. According to the lever principle, the converted pulling force can be obtained The lower end of the fulcrum single ear 5 is connected and fixed with the fulcrum column block 8 through the double ear 7; the two fulcrum column blocks 8 are axially fixed on both sides of the space inside the inner wall 2 of the cone section shell, and each fulcrum column block 8 is used to support the The synthesizing mechanism of the three groups of forces of the three separated sliders 1 on the side is shown in Figure 5; the synthesizing mechanism of the force is symmetrically provided with two sets, as shown in Figure 4, and each set is connected to the conversion mechanism of the three groups of forces on one side, The F21, F22, F23 of the three sets of force conversion mechanisms on one side are synthesized into one F through the force synthesis mechanism; each set of force synthesis mechanism includes a primary lever 12 and a secondary lever 13, and the secondary lever 13 is an equal-arm lever , its two ends are respectively provided with the first two ears 14 and the second two ears 15; Power single ear 6 is connected; The middle part of secondary lever 13 is connected with the left end of primary lever 12 by single double ear structure, and the right end of primary lever 12 is provided with the 3rd double ear 16, and the 3rd double ear 16 is connected with last on the 1st quadrant. The power-applying lug 6 of the conversion mechanism of the power of a separation slider 1 is connected; the first-level lever 12 is provided with a synthetic single lug 17, and the distance between the position of the synthetic single lug 17 and the length L32 of the third double lug is set to the synthetic single lug. The position distance of the ear 17 is set to be used for twice the length L31 of the position of the single and double ear mechanism connected with the secondary lever 13; the synthetic single ear 17 is connected with the internal actuator 10 arranged on the fixed column block 9; the fixed column The block 9 is axially fixedly arranged at the lower position in the middle of the space of the inner wall 2 of the cone section housing.

For the 2 groups of 6 separation sliders 1 in quadrant II and III, each separation slider 1 is also provided with a force conversion mechanism to realize the tangential force on the separation slider 1; 3 sets on the same side The force conversion mechanism is combined by a set of force synthesis mechanism; the force conversion mechanism and force synthesis mechanism of the separation slider 1 close to the third quadrant and the force conversion mechanism structure of the separation slider 1 close to the I quadrant The arrangement is the same; the difference is that the synthesizing lug 17 of the synthesizing mechanism of the force of the separation slider 1 near the third quadrant is connected with the external actuator 11 fixed on the ground.

Reasonable combination and arrangement of these two mechanisms can transform the multi-directional pressure in a narrow space into a small amount of pulling force in an open area, which makes the loading of force more convenient and feasible. The detailed implementation process is:

1. Combination of forces on the individual separating slides 1 .

Combining the radial force and tangential force on the separating slide block 1 with both radial pressure and tangential pressure into one pressure, the magnitude and direction of the resultant force are obtained through calculation. In this way, the pressure in 18 directions that originally needs to be applied on the 12 separation sliders 1 becomes the pressure in 12 directions.

2. Transformation of force.

The conversion of power requires a fixed fulcrum for the fixed fulcrum of the force conversion mechanism lever fulcrum (single and double ear structure) to be arranged inside the cone section housing inner wall 2 . Arrange two fulcrum columns 8 with a cross-sectional size of 300mmx300mm and a height of 1500mm inside the shell structure of the second and third stages, and adjust the position of the fulcrum columns 8 so that the position of the force conversion mechanism is enough to be placed inside the second and third stage front shells , the position after arrangement is shown in Figure 5. In this way, the pressure in 12 directions that needs to be applied is converted into pulling force in 12 directions.

3. Force synthesis.

Since the three separation sliders 1 at the same angle and different heights (direction of the front view) are subjected to the same force, the converted pulling force on the three separation sliders 1 at the same angle and different heights can be synthesized into one by using a force synthesis mechanism. pull. In this way, the pulling forces in 12 directions that need to be applied are simplified into pulling forces in 4 directions. After converting and synthesizing these multiple sets of forces into 4 tensions, the traditional loading device can be used to load in a small range, and the two tensions close to the I quadrant can be loaded in the shell structure through the force synthesis mechanism. The two pulling forces close to the III quadrant are loaded through the opening on the inner wall 2 of the cone section shell, as shown in Fig. 5 .

The above embodiments of the present utility model have been described in detail. The above-mentioned implementation is only the optimal embodiment of the present utility model, but the present utility model is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, Various changes can also be made without departing from the purpose of the utility model.

Claims (2)

1. A multi-point, small-scale and multi-dimensional force conversion loading mechanism inside a rocket shell is characterized in that it includes a power conversion mechanism and a force synthesis mechanism; wherein, the power conversion mechanism has six sets, all of which are lever structures, and act on respectively On the I, IV quadrant, on each separation slide block (1); one end of the conversion lever (3) of the conversion mechanism of force is matched by the ball socket on the ball joint (4) and the separation slide block (1); conversion lever ( The other end of 3) is provided with a single ear (6) for applying force, and the upper end of the fulcrum single ear (5) is fixed on the conversion lever (3) as the fulcrum of the conversion mechanism of the force; the lower end of the fulcrum single ear (5) passes through the double ear (7) ) is connected and fixed with the fulcrum column block (8); two fulcrum column blocks (8) are axially fixed on both sides of the space inside the inner wall (2) of the cone section shell, and each fulcrum column block (8) is used to support the There are three groups of force synthesis mechanisms of the three separated sliders (1) on the side; two sets of force synthesis mechanisms are symmetrically arranged, and each set is connected to the three groups of force conversion mechanisms on one side; each force synthesis mechanism includes a first-level lever (12) and secondary lever (13), secondary lever (13) is an equiarm lever, and its two ends are respectively provided with first double ear (14) and second double ear (15); First double ear (14) ) and the second two ears (15) are respectively connected with the power application single ear (6) of the conversion mechanism of the power of the first 2 separate slide blocks (1) on the I quadrant; Structure is connected with the left end of one-level lever (12), and the right-hand side of one-level lever (12) is provided with the 3rd double ear (16), and the 3rd double ear (16) is separated slide block (1 at last) on the 1st quadrant. ) is connected with the single lug (6) of the force conversion mechanism of the power; the first-level lever (12) is provided with a synthetic single lug (17), and the position distance of the synthetic single lug (17) is set and the length of the third double lug is set. The position distance of compound single ear (17) is set to be used for twice the length of the position of the single double ear mechanism that is connected with secondary lever (13); The internal actuator (10) is connected; the fixed column block (9) is axially fixedly arranged at the lower position in the middle of the space of the inner wall (2) of the cone section housing. 2. The multi-point, small-scale and multi-dimensional force conversion loading mechanism inside a rocket shell as claimed in claim 1, characterized in that, for 2 groups of quadrants II and III, there are 6 separate sliders (1) in total, and each separate The slider (1) is also provided with a force conversion mechanism; the three sets of force conversion mechanisms on the same side are combined by a force synthesis mechanism; the force conversion mechanism of the separation slider (1) close to the third quadrant The structure and arrangement of the synthetic mechanism and the power conversion mechanism of the separating slide block (1) close to the I quadrant are the same; Ear (17) is connected with the external actuator (11) that is fixed on the ground.