CN210103278U - Special lifting appliance for conventional large liquid rocket engine test - Google Patents
Special lifting appliance for conventional large liquid rocket engine test Download PDFInfo
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- CN210103278U CN210103278U CN201920468768.XU CN201920468768U CN210103278U CN 210103278 U CN210103278 U CN 210103278U CN 201920468768 U CN201920468768 U CN 201920468768U CN 210103278 U CN210103278 U CN 210103278U
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Abstract
The utility model relates to a rocket engine frock, concretely relates to experimental special lifting device of conventional large-scale liquid rocket engine for solve the hoisting point of national standard series U type ring and engine and mismatch, and national standard series U type ring complex operation, round pin axle easily fall and accidentally injure the engine scheduling problem. The lifting appliance comprises a first buckle, a steel wire rope, a second buckle, a U-shaped ring and a pin shaft; the two sections of steel wire ropes are fixed by a first buckle after the steel wire ropes are folded at set positions; the ends of the two sections of steel wire ropes respectively penetrate through a U-shaped ring lifting lug and are fixed by a second buckle; a wear-resistant ring is arranged at a steel wire rope closed loop formed by the first buckle and the second buckle; one end of the pin shaft is provided with a movable limiting separation blade, the other end of the pin shaft is provided with a through hole, and one vertex angle of the movable limiting separation blade is a fillet; the side of the U-shaped lifting lug is welded with a circular ring. The utility model discloses a but the experimental special lifting device of large-scale liquid rocket engine of conventionality wide application in liquid rocket engine technical field trade.
Description
Technical Field
The utility model relates to a liquid rocket engine frock, concretely relates to experimental special lifting device of large-scale liquid rocket engine of conventionality.
Background
The engine is hoisted as an important link in the test preparation stage of the liquid rocket engine, and the sling is a key force-bearing part for connecting the crane and the engine in the hoisting process. The lifting appliance is used in the processes of butt joint, installation and the like of the engine loading and unloading vehicle and the test frame, and the performance of the lifting appliance is directly related to the safety of the engine in the lifting process.
A steel wire rope hanger used for hoisting a conventional large-scale liquid rocket engine is in a structural form that a steel wire rope is connected with a U-shaped ring. Annular link is equipped with at the engine top, and the link symmetric distribution is four hoisting points, and because of the particularity of hoisting point structure and size, national standard series U type ring does not match with the hoisting point of this engine, and national standard series U type ring is the spiral drift nail model mostly, and its complex operation increases operating personnel's work load easily, and the round pin axle will follow the hand and drop slightly carelessly simultaneously, and then the accidental injury engine.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the lifting point of the national standard series U-shaped ring that above-mentioned prior art exists and engine is unmatched, and the problem that the national standard series U-shaped ring complex operation, the easy work load that increases operating personnel, round pin axle easily fall the accidental injury engine provides the experimental special lifting device of the large-scale liquid rocket engine of conventionality.
In order to achieve the above object, the technical solution of the present invention is:
a special lifting appliance for a conventional large liquid rocket engine test is characterized in that: the device comprises a first buckle, a steel wire rope, a second buckle and a U-shaped ring;
the steel wire ropes are folded in half at set positions and then the two steel wire ropes are fixed by a first buckle, and a formed closed loop is a hanging ring of the hanger;
the ends of the two sections of steel wire ropes respectively penetrate through the lifting lugs of the U-shaped ring, the ends of the two sections of steel wire ropes are fixed with the steel wire ropes through the second buckles, and the formed closed rings are respectively a first hanging ring and a second hanging ring of the lifting appliance;
the outer rings of the steel wire ropes of the hanging rings, the first hanging rings and the second hanging rings are respectively provided with a hanging ring wear-resistant ring, a first hanging ring wear-resistant ring and a second hanging ring wear-resistant ring;
the U-shaped ring comprises a pin shaft, a movable limiting baffle, a pin and a circular ring;
the movable limiting blocking piece is connected with the pin shaft through a pin;
the pin shaft penetrates through the ring body of the U-shaped ring and is fixed by the movable limiting blocking piece;
one end of the long hole on the movable limiting separation blade and the vertex angle close to the U-shaped ring are rounded corners;
a through hole is formed in the non-detachable end of the pin shaft; and a circular ring is welded on the side surface of the U-shaped ring lifting lug.
Furthermore, the lengths of the two sections of the steel wire ropes folded from the set positions in half are 2150-2200 mm and 2200-2250 mm respectively.
Further, the lengths of the two steel wire ropes in the steel wire rope are 2175mm and 2220m respectively.
Furthermore, in order to avoid excessive bending and abrasion of the steel wire rope, the hanging ring wear-resisting ring, the first hanging ring wear-resisting ring and the second hanging ring wear-resisting ring all adopt steel wire rope rigging lantern rings, the steel wire rope rigging lantern rings are formed by bending steel pipes which are cut along the axial direction, steel wire rope grooves are formed in the outer sides of the steel wire rope rigging lantern rings, and thickened pipe walls are adopted in the bent parts.
Furthermore, the through hole and the circular ring on the pin shaft are arranged on the same side of the U-shaped ring.
Further, the corners of the U-shaped ring are provided with rounding and chamfering.
Further, the U-shaped ring is made of 40Cr materials.
Further, the U-shaped ring is plated with chrome on the surface.
The utility model has the advantages that:
1. the special lifting appliance for the conventional large liquid rocket engine test adopts a specially-made U-shaped ring, so that the structure and the size of an engine lifting point are matched with the lifting appliance, and the safety and the reliability during lifting are ensured;
2. the engine is of an eccentric structure, so that the lengths of two sections of steel wire ropes of the steel wire rope sling are 2175mm and 2220mm respectively, so that the engine can be stably maintained in the hoisting process and cannot incline;
3. the steel wire rope sling lantern rings are additionally arranged at the hanging rings, the first hanging rings and the second hanging rings of the steel wire rope sling, so that the steel wire rope can be effectively protected, the excessive bending and abrasion of the cable can be avoided, and the aging and extrusion deformation of the steel wire rope can be slowed down;
4. the top end of the baffle plate is arranged in a quarter of arc, so that the baffle plate can only rotate towards a fixed direction, and the influence on hoisting caused by random rotation of the baffle plate when the pin shaft is plugged and unplugged is avoided;
5. the through hole at one end of the pin shaft is connected with the ring on the side surface of the U-shaped ring lifting lug through the iron chain, so that the potential safety hazards that the pin shaft accidentally falls off the hand and accidentally injures an engine when a person installs and detaches the pin shaft can be effectively avoided;
6. the U-shaped ring is made of 40Cr material, the tensile strength sigma b of the material is more than or equal to 980MPa, and the yield limit sigma issNot less than 785MPa, high tensile strength and yield limit, and high surface hardness of HRC 32-36 (Rockwell hardness)Hardness in durometer). The material is moderate in price, easy to process and has certain toughness, plasticity and wear resistance after proper heat treatment; the structure and the size of the U-shaped ring are designed according to the lifting point of the engine, so that the U-shaped ring is matched with the lifting point of the engine, and the safety and the reliability in lifting are ensured;
7. the corners of the U-shaped ring are provided with the rounding and the chamfer, so that the possibility of insufficient mechanical strength caused by stress concentration at the corners is reduced;
8. the chromium plating on the surface of the U-shaped ring is beautiful and can meet the requirement of rust prevention;
9. the movable limiting blocking piece rotates around the pin and moves, and the purpose of locking and loosening the U-shaped ring can be conveniently achieved through the pin shaft, so that the U-shaped ring is easy and convenient to operate, and the workload of operators is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a special lifting appliance for a conventional large-scale liquid rocket engine test according to the present invention;
FIG. 2 is a schematic structural view illustrating a locked state of the U-shaped ring in the present embodiment;
FIG. 3 is a schematic structural view illustrating the movable state of the U-shaped ring in the present embodiment;
FIG. 4 is a side view of the U-shaped ring of this embodiment.
The reference numbers are as follows:
1-a first buckle, 2-a steel wire rope, 3-a second buckle, 4-a U-shaped ring, 5-a pin shaft, 6-a movable limit baffle, 7-a circular ring, 8-a lifting ring, 81-a lifting ring wear-resistant ring, 9-a first hanging ring, 91-a first hanging ring wear-resistant ring, 10-a second hanging ring and 101-a second hanging ring wear-resistant ring.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1, a special lifting device for testing a conventional large-scale liquid rocket engine comprises: first buckle 1, wire rope 2, second buckle 3, U type ring 4, round pin axle 5 and portable spacing separation blade 6.
The steel wire rope 2 is folded in half at a set position, and then two sections of steel wire ropes 2 are fixed by a first buckle 1, and a formed closed loop is a hanging ring 8 of the steel wire rope hanger; the lifting ring 8 is connected with a lifting hook of a truss vehicle when the conventional high-thrust liquid rocket engine is lifted.
The ends of the two sections of steel wire ropes 2 respectively penetrate through the lifting lugs of the U-shaped ring 4, the ends of the two sections of steel wire ropes 2 are fixed with the sections of steel wire ropes 2 through the second buckles 3, and the formed closed loops are respectively a first hanging ring 9 and a second hanging ring 10 of the steel wire rope lifting appliance.
In order to avoid the steel wire rope sling being easily extruded and deformed and accelerated to age after being used for a long time, the outer rings of the steel wire ropes of the hanging ring 8, the first hanging ring 9 and the second hanging ring 10 are respectively provided with a hanging ring wear-resisting ring 81, a first hanging ring wear-resisting ring 91 and a second hanging ring wear-resisting ring 101; the hanging ring wear-resistant ring 81, the first hanging ring wear-resistant ring 91 and the second hanging ring wear-resistant ring 101 are steel wire rope rigging lantern rings, the steel wire rope rigging lantern rings are formed by bending steel pipes cut along the axial direction, the bent parts adopt thickened pipe walls, the steel wire rope rigging lantern rings are provided with rope grooves, the tail ends of ropes are convenient to surround and tie, the steel wire rope rigging lantern rings can effectively protect steel wire ropes, excessive bending and abrasion of the ropes are avoided, and aging and extrusion deformation of the steel wire ropes are slowed down, as shown in fig. 1.
The engine of the model is of an eccentric structure, the gravity center is deviated to one side of the turbopump, and in order to ensure that the engine is kept stable and avoid inclination in the hoisting process, two sections of steel wire ropes 2 in a steel wire rope sling need to have certain length difference; the lengths of the two sections of the wire rope 2 of the wire rope sling are set to be 2175mm and 2220mm respectively according to the gravity center position of the engine and the ductility of the wire rope 2.
The weight of the engine is about 1.5 tons, and 4 times of safety factor is taken to ensure the safety and reliability of hoisting, so the design bearing capacity of the steel wire rope sling is 6 tons in total. The top of the engine is provided with an annular connecting frame, four hoisting points are symmetrically distributed on the connecting frame, so that two groups of steel wire rope hoists are used during hoisting, a single steel wire rope hoist is designed to bear 3 tons, the steel wire rope hoist is folded in half and in half, and a steel wire rope 2 with the effective bearing of 1.5 tons is selected.
The design bearing capacity of the single steel wire rope hanger is 3 tons, two steel wire ropes in the single steel wire rope hanger correspond to the two U-shaped rings 4, and therefore the single U-shaped ring 4 is designed to bear 1.5 tons. The U-shaped ring 4 is mainly under the action of tensile stress, and meanwhile, the pin shaft 5 can also generate friction with the ring body in the plugging process, so that the U-shaped ring needs to have better tensile strength, toughness and certain surface hardness. Therefore, the U-shaped ring 4 is made of 40Cr materials, the tensile strength of the materials is more than or equal to 980MPa, the yield limit of the materials is more than or equal to 785MPa, the materials have higher tensile strength and yield limit, and the surface hardness can reach HRC 32-36 (Rockwell hardness) after quenching and tempering. The material has moderate price, is easy to process, and has certain toughness, plasticity and wear resistance after proper heat treatment.
According to the engine lifting point structure, the size and the tensile stress born by the single U-shaped ring 4, the U-shaped ring 4 is designed, as shown in fig. 2 and fig. 4, wherein the total height of the U-shaped ring 4 is 136mm, the height in the ring body is 71mm, the inner width is 80mm, the outer width is 100mm, the width of the side surface of the ring body is 50mm, the inner diameter of a lifting lug is 25mm, the outer diameter of the lifting lug is 27.5mm, the thickness of the lifting lug is 20mm, and the hole of a pin shaft 5 is 25 mm.
In order to reduce the possibility of insufficient mechanical strength at the corners of the U-shaped ring 4 caused by stress concentration, the corners of the U-shaped ring 4 are provided with a rounding and a chamfer, the rounding R is 6mm, and the chamfer is 3mm multiplied by 45 degrees.
The detachable one end of round pin axle 5 is equipped with portable spacing separation blade 6 on U type ring 4, and the purpose that round pin axle 5 locking and relaxed can be realized conveniently to portable spacing separation blade 6 around the pin removal and rotatory setting, and round pin axle 5 locking, the relaxed state is as shown in fig. 2, fig. 3.
Rectangular hole end just is close to the apex angle of U type ring 4 for the fillet on portable spacing separation blade 6 for portable spacing separation blade 6 can only rotate towards fixed direction, has avoided the separation blade to rotate at will when plug round pin axle 5 and has influenced the operation.
A through hole with the diameter of 5mm is formed in the other end of the pin shaft 5, and a circular ring 7 is welded on the side face of a lifting lug of the U-shaped ring 4; when the U-shaped ring 4 is used, the pin shaft 5 is connected with the ring body through the iron chain with a certain length, and the potential safety hazard that the pin shaft 5 accidentally falls off the hand and further accidentally injures an engine when the person operates the engine is effectively avoided.
The surface of the U-shaped ring 4 is subjected to chrome plating treatment for rust prevention and beauty.
The special lifting appliance for the conventional large liquid rocket engine test is subjected to a test lifting test before being put into use, the weight piece weighs about 1.5 tons, static load tests and dynamic load tests are respectively carried out, and the time duration is 30 minutes in total. In the test process, the strength of the steel wire rope 2 is enough, the U-shaped rings 4 are firmly connected, the whole state of the steel wire rope sling is good, and the hoisting process is stable and has no inclination. After the test is finished, the steel wire rope lifting appliance is checked, no abnormal condition is found, and the performance of the steel wire rope lifting appliance is reliable. After the practical examination of the hoisting work of a plurality of test runs, the steel wire rope sling has reliable performance, firm connection and convenient use, and can better meet the use requirement of the hoisting work.
The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a experimental special lifting device of large-scale liquid rocket engine of conventionality which characterized in that: comprises a first buckle (1), a steel wire rope (2), a second buckle (3) and a U-shaped ring (4);
the steel wire rope (2) is folded at a set position and then two sections of the steel wire rope (2) are fixed by a first buckle (1), and a formed closed loop is a lifting ring (8) of the lifting appliance;
the ends of the two sections of steel wire ropes (2) respectively penetrate through the lifting lugs of the U-shaped ring (4), the ends of the two sections of steel wire ropes (2) are fixed with the sections of steel wire ropes (2) through the second buckles (3), and formed closed loops are a first hanging ring (9) and a second hanging ring (10) of the lifting appliance respectively;
the inner ring surfaces of the steel wire ropes of the hoisting ring (8), the first hanging ring (9) and the second hanging ring (10) are respectively provided with a hoisting ring wear-resistant ring (81), a first hanging ring wear-resistant ring (91) and a second hanging ring wear-resistant ring (101);
the U-shaped ring (4) comprises a pin shaft (5), a movable limiting blocking piece (6), a pin and a circular ring (7);
the movable limiting blocking piece (6) is connected with the pin shaft (5) through a pin;
the pin shaft (5) penetrates through the ring body of the U-shaped ring (4) and is fixed by a movable limiting baffle (6);
one end of the long hole on the movable limiting blocking piece (6) and the vertex angle close to the U-shaped ring (4) are rounded corners;
a through hole is formed in the non-detachable end of the pin shaft (5); and a circular ring (7) is welded on the side surface of the lifting lug of the U-shaped ring (4).
2. The special test sling for a conventional large-scale liquid rocket engine according to claim 1, wherein: the lengths of the two sections of the steel wire ropes (2) folded from the set positions are 2150-2200 mm and 2200-2250 mm respectively.
3. The special test sling for a conventional large-scale liquid rocket engine according to claim 2, wherein: the lengths of the two sections of the steel wire ropes (2) folded from the set positions are 2175mm and 2220mm respectively.
4. The special test sling for a conventional large-scale liquid rocket engine according to claim 1, wherein: the hanging ring wear-resistant ring (81), the first hanging ring wear-resistant ring (91) and the second hanging ring wear-resistant ring (101) are all steel wire rope rigging lantern rings, each steel wire rope rigging lantern ring is formed by bending a steel pipe which is cut along the axial direction, a steel wire rope groove is formed in the outer side of each steel wire rope rigging lantern ring, and the bent parts are thickened pipe walls.
5. The special test sling for a conventional large-scale liquid rocket engine according to claim 1, wherein: the through hole on the pin shaft (5) and the circular ring (7) are arranged on the same side of the U-shaped ring (4).
6. The special test sling for a conventional large-scale liquid rocket engine according to claim 5, wherein: and the corners of the U-shaped ring (4) are provided with rounding and chamfers.
7. The special test sling for a conventional large-scale liquid rocket engine according to claim 6, wherein: the U-shaped ring (4) is made of 40Cr materials.
8. The special test sling for a conventional large-scale liquid rocket engine according to claim 7, wherein: the surface of the U-shaped ring (4) is plated with chrome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920468768.XU CN210103278U (en) | 2019-04-09 | 2019-04-09 | Special lifting appliance for conventional large liquid rocket engine test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920468768.XU CN210103278U (en) | 2019-04-09 | 2019-04-09 | Special lifting appliance for conventional large liquid rocket engine test |
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| Publication Number | Publication Date |
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| CN210103278U true CN210103278U (en) | 2020-02-21 |
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| CN201920468768.XU Active CN210103278U (en) | 2019-04-09 | 2019-04-09 | Special lifting appliance for conventional large liquid rocket engine test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233312A (en) * | 2020-12-10 | 2021-08-10 | 山东南山铝业股份有限公司 | Special anode guide rod breaking lifting appliance for electrolysis |
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2019
- 2019-04-09 CN CN201920468768.XU patent/CN210103278U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233312A (en) * | 2020-12-10 | 2021-08-10 | 山东南山铝业股份有限公司 | Special anode guide rod breaking lifting appliance for electrolysis |
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