Mounting tool for positioning a damper

Abstract

The application provides an assembly tool for positioning and mounting a shock absorber, two corners of the inner wall of a length-adjustable tightening frame assembly are connected to two straight edges through a circular arc with the same diameter as the large-diameter section of the shock absorber, a convex rib is arranged on the upper edge of the inner wall of the length-adjustable tightening frame assembly, the corner circular arc of the inner wall of the length-adjustable tightening frame assembly is matched with the outer wall of the large-diameter section of the shock absorber at the corresponding position, the convex rib is located on the upper end surface of the large-diameter section of the shock absorber, and the corresponding ends of the two length-adjustable tightening frame assemblies are fixedly connected with the adjustable distance, then the length of the length-adjustable tightening frame assembly and the relative position are adjusted, the four shock absorbers are inwardly extruded to the coaxial state of the central hole of the shock absorber and the shaft center of the corresponding strut, and finally the locking nut on the strut is tightened to fix the shock absorber. The application solves the problems of inaccurate assembly positioning, high installation difficulty, low efficiency, and insecurity caused by manual extrusion assembly, improves the assembly quality and efficiency, guarantees the production safety, and has high innovation and effective and convenient use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of installation of a navigation and attitude product, and particularly relates to an assembly tool for positioning and installing a shock absorber. BACKGROUND

[0002] A MEMS navigation and attitude assembly mainly comprises inertial devices (one MEMS gyroscope and three accelerometers), senses angular velocity and acceleration signals of a carrier, and completes navigation and attitude calculation and outputs a navigation and attitude signal. The output signals of the gyroscope and the accelerometers directly affect the navigation and attitude precision of the product. When the gyroscope and the accelerometers are installed, a shock absorber needs to be installed. The internal shock absorbing structure of the navigation and attitude assembly is shown in Figure 1 , which comprises a base 1, four support columns 2, four shock absorbers 3, a bottom plate 4 and four locking nuts 5. The base 1, the support columns 2 and the bottom plate 4 are all made of metal materials and have high hardness, while the shock absorbers 3 are made of rubber materials and have certain elastic deformation under extrusion. The base 1 is provided with the four support columns 2 at four corners, and the four support columns 2 are connected to the bottom plate 4 through the four shock absorbers 3. The bottom plate 4 is provided with inertial devices and electronic components. When the base 1 is subjected to vibration and impact, the vibration and impact on the bottom plate 4 and the inertial devices and electronic components thereon can be weakened after being damped by the shock absorbers 3.

[0003] The assembly sequence of the internal shock absorbing structure of the navigation and attitude assembly is as follows: the inertial devices and electronic components are mounted on the bottom plate 4, the semicircular edges at four corners of the bottom plate 4 are respectively clamped in the middle grooves of the four shock absorbers 3, the center holes of the four shock absorbers 3 are aligned with the four support columns 2, and then the four shock absorbers 3 and the bottom plate are installed on the four support columns 2 and are fastened by the four locking nuts 5. When the shock absorbers 3 are installed between the bottom plate 4 and the four support columns 2, two steps are adopted. The first step is to clamp the semicircular edges at four corners of the bottom plate 4 in the middle grooves of the four shock absorbers 3, so that the bottom plate 4 is tightly close to the groove bottom surface of the shock absorbers 3, as shown in Figure 2 The second step is to extrude the semicircular edges at four corners of the bottom plate 4 into the recessed grooves of the shock absorbers 3 by using force FN to make the groove bottom surface recessed, as shown in Figure 3 .

[0004] The semicircular edges at four corners of the bottom plate 4 are extruded into the recessed grooves of the shock absorbers 3, and only manual operation is adopted, so that the assembly and positioning are not accurate, the shock absorbers are subjected to uneven force, the assembly quality is poor, consistency is difficult to guarantee, and the navigation and attitude precision of the gyroscope and the accelerometers during flight is affected. Moreover, the assembly is difficult and low in efficiency, and sometimes two persons need to cooperate to complete the assembly, which is not safe and easy to hurt hands and to make the bottom plate 4 jump and hurt the inertial devices and electronic components. Therefore, a set of assembly tool needs to be designed to accurately, simply, quickly and safely install the shock absorbers in place, to guarantee accurate positioning and uniform force of the four shock absorbers, to improve the assembly quality and efficiency of the navigation and attitude assembly, and to guarantee safe production. SUMMARY

[0005] The technical problem solved by the present application is to provide an assembly tool for positioning and installing shock absorbers, which adopts a length-adjustable tightening frame assembly distance-adjustable connecting structure with notches arranged opposite to each other and distributed on both sides of a bottom plate, realizes inward extrusion of the two length-adjustable tightening frame assemblies along the length and width directions of the bottom plate to the four shock absorbers, and after the center holes of the shock absorbers and the corresponding shaft centers of the struts are coaxial, the locking nuts on the struts are tightened to fix the shock absorbers, thereby solving the problems of inaccurate assembly positioning, great installation difficulty, low efficiency and insecurity caused by manual extrusion assembly, improving the assembly quality and efficiency, and guaranteeing production safety.

[0006] The technical scheme adopted by the present application is that the assembly tool for positioning and installing shock absorbers comprises length-adjustable tightening frame assemblies with notches arranged opposite to each other and distributed on both sides of a bottom plate, the inner wall of the length-adjustable tightening frame assembly is in a groove-shaped structure, two corners of the inner wall of the length-adjustable tightening frame assembly are connected to the two straight edges on the sides through arcs with the same diameter as the large-diameter section of the shock absorber, a convex rib is arranged at the upper edge of the inner wall of the length-adjustable tightening frame assembly, the arc corners of the inner walls of the two length-adjustable tightening frame assemblies are fitted to the outer wall of the large-diameter section of the shock absorber on the strut at the corresponding positions, and the convex rib is located on the upper end surface of the large-diameter section of the shock absorber, the lengths of the length-adjustable tightening frame assemblies are adjusted while the corresponding ends of the two length-adjustable tightening frame assemblies are fixed at a distance, and after the four shock absorbers are extruded inward to the center holes of the shock absorbers and the corresponding shaft centers of the struts under the action of the two length-adjustable tightening frame assemblies, the locking nuts on the struts are tightened to fix the shock absorbers.

[0007] The length-adjustable tightening frame assembly comprises a tightening frame one and a tightening frame two, the tightening frame one and the tightening frame two are straight elbow-shaped frame bodies with the same shape and symmetrically arranged, convex ribs are arranged on the upper edges of the inner walls of the tightening frame one and the tightening frame two, the frame body is formed by transition connection of a long rectangle on one side and an L-shaped block on the other side through arcs with the same diameter as the large-diameter section of the shock absorber, a sliding rail hole is arranged on one side of the outer wall of the long rectangle and penetrates to the other side of the outer wall, a U-shaped groove with its notch facing outward is arranged on one side of the outer wall of the L-shaped block, a pin hole penetrating the U-shaped groove is arranged on the upper end surface of the L-shaped block of the tightening frame one, and the L-shaped blocks of the tightening frame one and the tightening frame two are arranged opposite to each other and fixed at a distance to form a whole.

[0008] Further, the lifting ring end of the lifting ring screw is located in the U-shaped groove of the first tightening frame, and the bolt end extends out of the U-shaped groove of the second tightening frame, the lifting ring ring hole of the lifting ring screw corresponds to the pin hole on the first tightening frame, and the pin shaft matched with the lifting ring ring hole and the pin hole of the lifting ring screw positions the lifting ring screw on the first tightening frame, the other end of the lifting ring screw is connected with the small nut sleeve on the outer side of the second tightening frame, and after adjusting the distance between the first tightening frame and the second tightening frame by rotating the small nut sleeve, the two shock absorbers in the length direction of the bottom plate are inwardly pressed.

[0009] Further, the lifting ring screw adopts a one-piece structure with a flat circular ring head at one end, a flat rod in the middle and a threaded rod at the other end.

[0010] Further, the slide rail holes of the two groups of length-adjustable tightening frame assembly end portions are concentrically arranged, and a large nut sleeve is matched on the slide rail bolt passing through the slide rail holes of the two groups of length-adjustable tightening frame assembly end portions, and the distance between the two groups of length-adjustable tightening frame assemblies is adjusted by rotating the large nut sleeve, so as to inwardly press the two shock absorbers in the width direction of the bottom plate.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] 1. The length-adjustable tightening frame assembly distance-adjustable connecting structure with the notches oppositely arranged and distributed on both sides of the bottom plate is adopted, so that the two groups of length-adjustable tightening frame assemblies are inwardly pressed along the length and width directions of the bottom plate to the center holes of the four shock absorbers coaxial with the corresponding support shafts, and then the locking nuts on the supports are tightened to fix the shock absorbers, thereby solving the problems of inaccurate assembly positioning, high installation difficulty, low efficiency and insecurity caused by manual pressing assembly, improving the assembly quality and efficiency and ensuring the production safety.

[0013] 2. The convex ribs are arranged on the inner walls of the two groups of first and second tightening frames, so that when the two groups of first and second tightening frames inwardly press the shock absorbers along the length and width directions of the bottom plate, the convex ribs can ensure that the upper end faces of the four shock absorbers are on the same plane, and the shock absorbers and the bottom plate are balanced in force, thereby avoiding the bottom plate from jumping and injuring the inertial devices and components, and improving the safety and reliability during installation.

[0014] 3. The four shock absorbers are distributed in the rectangular formed by the two groups of length-adjustable tightening frame assemblies, and the four circular arc corners of the rectangle are matched with the four shock absorbers, respectively, so that the friction between the large-diameter outer wall of the shock absorber and the length-adjustable tightening frame assembly is increased under the surface contact, the relative position of the shock absorber during installation is ensured, and the shock absorber is accurately, simply, quickly and safely installed in place during the adjustment of the length and width of the rectangle, the four shock absorbers are accurately positioned and uniformly stressed, the assembly quality and efficiency of the attitude and position assembly are improved, and the safety production is ensured.

[0015] 4、 The technical scheme has simple tool structure, novel structure, strong innovation, effective and convenient use, and great practical value. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Assembling diagram for internal damping structure of the attitude and position assembly;

[0017] Figure 2 Assembling diagram for the bottom plate and the damper;

[0018] Figure 3 Assembling diagram for the damper under pressure;

[0019] Figure 4 Assembling diagram for the damper under pressure;

[0020] Figure 5 Assembling diagram for the damper under pressure;

[0021] Figure 6 Assembling diagram for the damper under pressure;

[0022] Figure 7 Assembling diagram for the damper under pressure;

[0023] Figure 8 Assembling diagram for the damper under pressure; DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the present application will be described below in conjunction with the drawings. Figures 3-8 The technical scheme in the embodiments of the present application will be described below in conjunction with the drawings.

[0025] It should be noted that, in this document, the terms "comprising" and "including" or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article, or device that includes the element.

[0026] The damping device positioning and installing assembling tool is like Figures 4-5As shown, including the length adjustable tightening frame assembly 6 which is arranged with notches facing each other and distributed on both sides of the bottom plate 4, the inner wall of the length adjustable tightening frame assembly 6 is in a groove structure, two corners of the inner wall of the length adjustable tightening frame assembly 6 are connected to the two straight sides through a circular arc with the same diameter as the large diameter section of the shock absorber 3, a convex rib 6-8 is made at the upper edge of the inner wall of the length adjustable tightening frame assembly 6, the inner wall corner arc of the two groups of length adjustable tightening frame assemblies 6 is sleeved on the outer wall of the large diameter section of the shock absorber 3 on the support column 2 at the corresponding position, and the convex rib 6-8 is located on the upper end face of the large diameter section of the shock absorber 3, while the corresponding ends of the two groups of length adjustable tightening frame assemblies 6 are adjustably fixed, the length of the length adjustable tightening frame assembly 6 is adjusted, and under the action of the two groups of length adjustable tightening frame assemblies 6, the four shock absorbers 3 are inwardly extruded to the coaxial state of the central hole of the shock absorber 3 and the corresponding support column 2 axis, and then the locking nut 5 on the support column 2 is tightened to fix the shock absorber 3; in the above structure, the length adjustable tightening frame assembly 6 arranged with notches facing each other and distributed on both sides of the bottom plate 4 is used to realize the distance adjustable connection structure, so that after the two groups of length adjustable tightening frame assemblies 6 extrude the four shock absorbers 3 inward along the length and width directions of the bottom plate 4 to the coaxial state of the central hole of the shock absorber 3 and the corresponding support column 2 axis, the locking nut 5 on the support column 2 is tightened to fix the shock absorber 3, the problems of inaccurate assembly positioning, high installation difficulty, low efficiency and insecurity caused by manual extrusion assembly are solved, the assembly quality and efficiency are improved, and the production safety is ensured;

[0027] As Figures 5-7As shown, the specific structure of the length-adjustable tightening frame assembly 6 is as follows: the length-adjustable tightening frame assembly 6 includes a tightening frame one 6-1 and a tightening frame two 6-2, both of which are straight elbow-shaped frame bodies with the same shape and symmetrically arranged, and a convex rib 6-8 is arranged on the inner wall of each of the tightening frame one 6-1 and the tightening frame two 6-2; the frame body is formed by connecting a long rectangular block 6-3 on one side and an L-shaped block 6-4 on the other side through a circular arc transition with the same diameter as the large diameter section of the damper 3; a sliding rail hole 6-5 is arranged on one side of the outer wall of the long rectangular block 6-3 and penetrates to the other side of the outer wall; a U-shaped groove 6-6 with its notch facing outward is arranged on one side of the outer wall of the L-shaped block 6-4; a pin hole 6-7 is arranged on the upper end face of the L-shaped block 6-4 of the tightening frame one 6-1 and penetrates the U-shaped groove 6-6; the L-shaped blocks 6-4 of the tightening frame one 6-1 and the tightening frame two 6-2 are arranged opposite to each other and are integrally connected with adjustable distance; specifically, the lifting ring end of the lifting ring screw 7 is located in the U-shaped groove 6-6 of the tightening frame one 6-1, and the bolt end extends out of the U-shaped groove 6-6 of the tightening frame two 6-2; the lifting ring hole of the lifting ring screw 7 corresponds to the position of the pin hole 6-7 on the tightening frame one 6-1, and the pin shaft 8 matched with the lifting ring hole of the lifting ring screw 7 and the pin hole 6-7 positions the lifting ring screw 7 on the tightening frame one 6-1; the other end of the lifting ring screw 7 is connected with the small nut sleeve 9 located outside the tightening frame two 6-2, and after adjusting the distance between the tightening frame one 6-1 and the tightening frame two 6-2 by rotating the small nut sleeve 9, the inward extrusion of the two dampers 3 in the length direction of the bottom plate 4 is realized; specifically, as shown in Figure 8 As shown, the lifting ring screw 7 has an integral structure with the flat circular ring head at one end of the lifting ring end connected with the threaded rod at the other end through the flat rod in the middle; the groove top wall and the groove top wall of the U-shaped groove 6-6 are parallel to the upper end face and the lower end face of the lifting ring screw 7, respectively; the thickness of the lifting ring screw 7 is less than the diameter of the screw rod section; the groove height of the U-shaped groove 6-6 is not less than the thickness of the lifting ring screw 7 but not greater than the diameter of the screw rod section; in the above structure, by arranging the convex rib 6-8 on the inner wall of the two sets of tightening frame one 6-1 and tightening frame two 6-2, when the two sets of tightening frame one 6-1 and tightening frame two 6-2 extrude the dampers 3 in the length direction and the width direction of the bottom plate 4, the convex rib 6-8 can ensure that the upper end faces of the four dampers 3 are on the same plane, and the dampers 3 and the bottom plate 4 are balanced in force, thereby avoiding the bottom plate 4 from bouncing and injuring the inertial devices and components, and improving the safety and reliability during installation;

[0028] As shown in Figures 4-5 The sliding rail holes 6-5 at the ends of the two sets of length-adjustable tightening frame assemblies 6 are concentrically arranged, and a large nut sleeve 11 is matched with the sliding rail bolt 10 that penetrates the sliding rail holes 6-5 at the ends of the two sets of length-adjustable tightening frame assemblies 6, and the distance between the two sets of length-adjustable tightening frame assemblies 6 is adjusted by rotating the large nut sleeve 11, thereby realizing the inward extrusion of the two dampers 3 in the width direction of the bottom plate 4.

[0029] In use, the inertial device and electronic components are mounted on the base plate 4, the semicircular edges of the base plate 4 are respectively clamped in the middle grooves of the four dampers 3, and abut against the groove bottom column surface of the dampers 3; the two large nut sleeves 11 and the two small nut sleeves 9 on the tooling are loosened, the long side and the wide side are slightly larger than the dimensions X and Y, the convex edges 6-8 step surfaces are downward, the two groups of length-adjustable tightening frame assemblies 6 form a rectangle with four rounded corners, the four rounded corners are aligned with the four dampers 3, and the dampers 3 are gently pressed into contact with the convex edges 6-8 step bottom surfaces, the large nut sleeves 11 are tightened to adjust the wide side distance, the small nut sleeves 9 are tightened to adjust the long side distance, and the X' and Y' values are repeatedly adjusted, as shown in the figure, that is, the four dampers 3 are extruded to make the four center holes coaxial with the corresponding four support shafts 2, the extruded base plate 4 and the dampers 3 are combined together with the tooling, and then the tooling is removed after the locking nuts 5 on each support 2 are tightened. Figure 3

[0030] The technical solution utilizes the distribution characteristics of the four dampers 3, the four rounded corners of the rectangle formed by the two groups of length-adjustable tightening frame assemblies 6 are respectively matched with the four dampers 3, and the friction between the large-diameter outer wall of the damper 3 and the length-adjustable tightening frame assembly 6 is increased under surface contact, which ensures the relative position of the damper 3 during installation, thereby accurately, simply, quickly and safely installing the damper 3 in place during the adjustment of the long side and the wide side of the rectangle, and ensuring the accurate positioning and uniform stress of the four dampers 3, improving the assembly quality and efficiency of the attitude and position assembly, and ensuring safe production; the tooling has a simple structure, a novel structure, strong innovation, effective and convenient use, and great practical value.

[0031] It should be apparent to those skilled in the art that the application is not limited to the details of the foregoing illustrative examples, and that the present application can be carried out in other embodiments which do not depart from the spirit or essential characteristics of the application. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No limitation is intended to the effect that any recited claim must include any particular feature or combination of features.

[0032] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.​

Claims

1. An assembly fixture for positioning and installing a vibration damper, characterized in that: The system includes adjustable tensioning frame assemblies (6) with slots facing each other and distributed on both sides of the base plate (4). The inner wall of the adjustable tensioning frame assembly (6) has a groove-shaped structure. The two corners of the inner wall of the adjustable tensioning frame assembly (6) are connected to the straight edges on both sides by arcs with the same diameter as the large diameter section of the shock absorber (3). The upper edge of the inner wall of the adjustable tensioning frame assembly (6) has protruding ribs (6-8). The inner corner arcs of the two sets of adjustable tensioning frame assemblies (6) are fitted onto the support at the corresponding positions. The outer wall of the large diameter section of the shock absorber (3) on the column (2) is adapted, and the protrusion (6-8) is located on the upper end face of the large diameter section of the shock absorber (3). At the same time, the corresponding ends of the two sets of length adjustable tensioning frame assemblies (6) are fixedly connected in an adjustable manner. The length of the length adjustable tensioning frame assembly (6) is adjusted. Under the action of the two sets of length adjustable tensioning frame assemblies (6), the four shock absorbers (3) are squeezed inward until the center hole of the shock absorber (3) is coaxial with the axis of the corresponding column (2). Then, the locking nut (5) on the column (2) is tightened to fix the shock absorber (3). The adjustable length tensioning frame assembly (6) includes a tensioning frame one (6-1) and a tensioning frame two (6-2). Both tensioning frame one (6-1) and tensioning frame two (6-2) are right-angled elbow-shaped frames with the same shape and symmetrical arrangement. The inner walls of tensioning frame one (6-1) and tensioning frame two (6-2) are provided with protruding ribs (6-8). The frame consists of a rectangular block (6-3) on one side and an L-shaped block (6-4) on the other side, which pass through an arc with the same diameter as the large diameter section of the shock absorber (3). The rectangular block (6-3) is formed by connecting the two parts. One side of the outer wall of the rectangular block (6-3) has a slide rail hole (6-5) that extends to the other side of the outer wall. One side of the outer wall of the L-shaped block (6-4) has a U-shaped groove (6-6) with the opening facing outward. The upper end face of the L-shaped block (6-4) on the first tensioning frame (6-1) has a pin hole (6-7) that extends through the U-shaped groove (6-6). The L-shaped blocks (6-4) of the first tensioning frame (6-1) and the second tensioning frame (6-2) are arranged facing each other and fixed together in an adjustable distance.

2. The assembly fixture for positioning and installing the vibration damper according to claim 1, characterized in that: The eye end of the eye screw (7) is located in the U-shaped groove (6-6) of the first tensioning frame (6-1), while the bolt end extends out of the U-shaped groove (6-6) of the second tensioning frame (6-2). The eye hole of the eye screw (7) corresponds to the pin hole (6-7) on the first tensioning frame (6-1), and the pin (8) that matches the eye hole and pin hole (6-7) of the eye screw (7) positions the eye screw (7) on the first tensioning frame (6-1). The other end of the eye screw (7) is matched and connected to the small nut sleeve (9) located outside the second tensioning frame (6-2). After adjusting the distance between the first tensioning frame (6-1) and the second tensioning frame (6-2) by rotating the small nut sleeve (9), the two dampers (3) in the length direction of the base plate (4) are squeezed inward.

3. The assembly fixture for positioning and installing the vibration damper according to claim 2, characterized in that: The eye bolt (7) adopts an integrated structure in which the eye bolt at one end is a flat circular head, and the flat rod in the middle is connected to the threaded rod at the other end.

4. The assembly fixture for positioning and installing the vibration damper according to claim 1, 2, or 3, characterized in that: The slide rail holes (6-5) at the ends of the two sets of adjustable length tensioning frame assemblies (6) are concentrically arranged, and the slide rail bolts (10) that pass through the slide rail holes (6-5) at the ends of the two sets of adjustable length tensioning frame assemblies (6) are fitted with large nut sleeves (11). By rotating the large nut sleeves (11), the distance between the two sets of adjustable length tensioning frame assemblies (6) is adjusted, thereby achieving inward compression of the two dampers (3) in the width direction of the base plate (4).

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