CN217980783U - Force bearing tool for static test shear wall of solid rocket engine structure - Google Patents
Force bearing tool for static test shear wall of solid rocket engine structure Download PDFInfo
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- CN217980783U CN217980783U CN202221976282.5U CN202221976282U CN217980783U CN 217980783 U CN217980783 U CN 217980783U CN 202221976282 U CN202221976282 U CN 202221976282U CN 217980783 U CN217980783 U CN 217980783U
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Abstract
The utility model provides a load frock for solid rocket engine structure static test shear force wall has solved the less shortcoming of shear force pull rod and axial force pull rod interference, maximum loading power in the present single-point load frock. The force bearing tool comprises a tool bottom plate, two force bearing sleeves and two fasteners; two mounting through holes are symmetrically formed on the vertical central line of the tool bottom plate about the horizontal central line; the center distance of the two mounting through holes is 380-420mm; two sleeve connecting counter bores are symmetrically formed in the horizontal center line of the tool bottom plate about the vertical center line; the center distance of the two sleeve connecting counter bores is determined according to the center distance of the connecting holes of the engine shear tool to be tested; the two fasteners are used for installing the tool bottom plate on the shear wall through the two installation through holes respectively; the two bearing sleeves are boss-shaped cylindrical threaded sleeves and are respectively installed in the two sleeve connecting counter bores for connecting the shear actuator.
Description
Technical Field
The utility model belongs to the technical field of solid rocket engine structure static test, concretely relates to load frock for solid rocket engine structure static test shear force wall, this frock is fixed in and implements the shear force loading on the shear force wall.
Background
The static test of the solid rocket engine is an important component of a structural strength test of the solid rocket engine, and is used for simulating the actual load borne by the solid rocket engine in a working state.
At present, when a solid rocket engine works actually, the working mechanical environment is more complex, and the same quadrant of the engine often has the working condition that various axial forces and shearing forces coexist, so that more actuators are needed to simulate the load born by the engine in the actual work during static test. In order to realize the installation of the shear actuator for the static test of the solid rocket engine structure, a single-point bearing plate is usually installed on a shear wall, the shear loading is realized in a single-point loading mode, in the static test, when the axial force and the shear force exist in the same quadrant of the engine at the same time, the single-point bearing plate is used for installing the actuator to apply the shear force, the axial force action pull rod is used for avoiding the shear action pull rod, a penetrating rod plate is installed in an axial force action pull rod system (in order to not influence the axial force test, the penetrating rod plate is large, heavy and not easy to install integrally), so that the shear action pull rod penetrates through the penetrating rod plate to be connected with the shear loading part of the skirt end face of the engine shell, or portal frames are built on two sides of the quadrant, and the axial actuator is installed above the engine shell so as to avoid the interference of the axial force pull rod and the shear action pull rod. When the length of the engine shell is too high, the installation and building difficulty of the rod penetrating plate and the portal frame is high, the number of working procedures is large, and the test efficiency is seriously influenced. Meanwhile, the single-point bearing plate has limited connection strength and small maximum loading force, and when the shear load is overlarge, the single-point connection has the damage risk caused by stress concentration.
In view of this, it is necessary to design a novel bearing tool for a shear wall in a static test of a solid rocket engine structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve shear force pull rod and axial force pull rod interference, the less weak point of maximum loading power in the present single-point load frock, and provide a load frock that is used for solid rocket engine structure static test shear force wall.
To achieve the above object, the present invention provides a technical solution:
a bearing frock for a shear wall of a static test of a solid rocket engine structure is characterized in that: the tool comprises a tool bottom plate, two bearing sleeves and two fasteners;
two mounting through holes are symmetrically formed on the vertical central line of the tool bottom plate about the horizontal central line; the center distance of the two mounting through holes is 380-420mm;
two sleeve connecting counter bores are symmetrically formed in the horizontal center line of the tool bottom plate about the vertical center line; the center distance of the two sleeve connecting counter bores is determined according to the center distance of the connecting holes of the engine shear tool to be tested;
the two fasteners are used for installing the tool bottom plate on the shear wall through the two installation through holes respectively;
the two bearing sleeves are boss-shaped cylindrical threaded sleeves and are respectively installed in the two sleeve connecting counter bores (namely, the sleeve connecting counter bores are stepped holes, and the bearing sleeves are connected with the tool bottom plate in a pin hole connecting mode) and are used for connecting the shear actuator.
Further, the center distance between the two sleeve connecting counterbores is 250mm.
Further, for the convenience of processing and making the bearing frock satisfy the test strength demand, the centre-to-centre spacing of two installation through-holes is 400mm.
Further, the fastener is an M42 foundation bolt and a nut which are matched for use; the head of the M42 anchor bolt is matched with the T-shaped rail of the shear wall.
Furthermore, in order to match with the existing common shear actuator and facilitate installation, the inner wall of the bearing sleeve adopts M45 multiplied by 3 threads.
Furthermore, in order to improve the strength of the whole bearing tool, the bearing sleeve and the fastener of the bearing tool are made of 30CrMnSiA, and the bottom plate of the tool is made of Q235.
Further, the thickness and the size of the tooling bottom plate are determined according to the maximum applied load of the two shear actuators, and the tooling bottom plate can be modified on the premise of ensuring safety.
The utility model has the advantages that:
1. the utility model relates to an ingenious, simple structure adopts two point type load frock, carries out the shear force loading simultaneously through two shear force actuators of two load sleeve installations, so, decomposes into two component simultaneous loading with a shear force, under the same experimental shear force, compares in single-point load mode, can reduce the load that every load point bore, improves load board safety margin, improves and allows the maximum load.
2. The utility model discloses a two point load modes divide into two actuators load simultaneously with the shear force, and the translation has all been taken place to the outside for current shear force actuator position to two shear force actuator mounted positions, can reserve the mounted position for the axial force pull rod, avoids interfering with the axial force pull rod, compares in the mode of installing the portal frame and wearing the pole board, and the degree of difficulty greatly reduced is installed and built to whole, and the mounting process is more simple and convenient.
3. The utility model discloses load sleeve and fastener adopt 30CrMnSiA, and the frock bottom plate adopts Q235, and intensity is higher when making whole load frock processing cost minimum, also can further promote experimental security.
Drawings
Fig. 1 is a structural schematic diagram of the force-bearing tool of the utility model;
fig. 2 is a structural section view of the force-bearing tool of the utility model;
fig. 3 is a working schematic diagram of the force-bearing tool of the present invention;
1-M42 anchor bolts; 2-bearing sleeve; 3-a shear wall; 4-tooling bottom plate; 5-a shear actuator; 6-axial force pull rod, 7-nut.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1-2, a force-bearing tool for a shear wall in a static test of a solid rocket engine structure comprises a tool bottom plate, two force-bearing sleeves and two fasteners.
The tool bottom plate is provided with a vertical center line and a horizontal center line, wherein the vertical center line of the tool bottom plate is symmetrically provided with two mounting through holes around the horizontal center line; the center distance of the two mounting through holes is 380-420mm (in the embodiment, for convenience of processing, the force-bearing tool can meet the requirement of test strength, and the center distance of the two mounting through holes is 400 mm); two sleeve connecting counter bores are symmetrically formed in the horizontal center line of the tool bottom plate about the vertical center line; the center distance of the two sleeve connecting counter bores is determined according to the center distance of the connecting holes of the shear tool of the engine to be tested, and 250mm can be selected. The thickness and size of the tooling bottom plate are determined according to the maximum applied load of the two shear actuators (the skilled person knows how to determine the thickness and size of the tooling bottom plate according to the maximum applied load), and the thickness and size of the tooling bottom plate can be modified appropriately on the premise of ensuring safety.
The fasteners are M42 anchor bolts and nuts which are matched with each other, and the two fasteners are used for installing the tool bottom plate on the shear wall through the two installation through holes respectively.
The sleeve connecting counter bore is a step hole, and the bearing sleeve is a boss-shaped cylindrical threaded sleeve which is matched with the bearing sleeve. The two bearing sleeves are respectively installed in the two sleeve connecting counter bores and connected with the tool bottom plate in the pin hole connecting mode, M45 multiplied by 3 threads are adopted on the inner walls of the bearing sleeves and used for being connected with the shear actuator in a threaded mode when in use, and only the connecting part of the shear actuator is shown in figure 2.
In order to improve the strength of the whole bearing tool, the bearing sleeve, the foundation bolt and the nut are all made of 30CrMnSiA, and in order to reduce the processing cost of the vertical tool, the bearing bottom plate is made of Q235.
The utility model discloses a use method:
firstly, mounting two M42 foundation bolts on a T-shaped track of a shear wall, and mounting a bearing sleeve into a sleeve connecting counter bore on a tool bottom plate; then connecting the tool bottom plate with two foundation bolts, adjusting the height to enable the horizontal axis of the bearing sleeve to be horizontally aligned with the shear loading axis of the engine shell, and fixing the tool bottom plate on a shear wall by using nuts; and finally, connecting the two shear actuators through the threads of the bearing sleeve to realize shear loading.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention.
Claims (6)
1. The utility model provides a load frock for solid rocket engine structure static test shear force wall which characterized in that: the tool comprises a tool bottom plate, two bearing sleeves and two fasteners;
two mounting through holes are symmetrically formed on the vertical central line of the tool bottom plate about the horizontal central line; the center distance of the two mounting through holes is 380-420mm;
two sleeve connecting counter bores are symmetrically formed in the horizontal center line of the tool bottom plate about the vertical center line; the center distance of the two sleeve connecting counter bores is determined according to the center distance of the connecting holes of the engine shear tool to be tested;
the two fasteners are used for installing the tool bottom plate on the shear wall through the two installation through holes respectively;
the two bearing sleeves are boss-shaped cylindrical threaded sleeves and are respectively installed in the two sleeve connecting counter bores for connecting the shear actuator.
2. The bearing tool for the shear wall for the static test of the solid rocket engine structure as claimed in claim 1, wherein the bearing tool comprises:
the center distance between the two sleeve connecting counterbores is 250mm.
3. The bearing tool for the shear wall for the static test of the solid rocket engine structure according to claim 1 or 2, which is characterized in that:
the center distance of the two mounting through holes is 400mm.
4. The force bearing tool for the shear wall for the static test of the solid rocket engine structure as claimed in claim 3, wherein:
the fastener is M42 anchor bolt and nut which are matched for use.
5. The bearing tool for the shear wall for the static test of the solid rocket engine structure as claimed in claim 4, wherein the bearing tool comprises:
the inner wall of the bearing sleeve adopts M45 multiplied by 3 threads.
6. The force bearing tool for the shear wall for the static test of the solid rocket engine structure as claimed in claim 5, wherein:
the bearing sleeve and the fastener of the bearing tool are made of 30CrMnSiA, and the tool baseplate is made of Q235.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976282.5U CN217980783U (en) | 2022-07-29 | 2022-07-29 | Force bearing tool for static test shear wall of solid rocket engine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221976282.5U CN217980783U (en) | 2022-07-29 | 2022-07-29 | Force bearing tool for static test shear wall of solid rocket engine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217980783U true CN217980783U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221976282.5U Active CN217980783U (en) | 2022-07-29 | 2022-07-29 | Force bearing tool for static test shear wall of solid rocket engine structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217980783U (en) |
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2022
- 2022-07-29 CN CN202221976282.5U patent/CN217980783U/en active Active
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