CN110654970A - Drop test equipment and lifting device thereof - Google Patents
Drop test equipment and lifting device thereof Download PDFInfo
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- CN110654970A CN110654970A CN201911080732.5A CN201911080732A CN110654970A CN 110654970 A CN110654970 A CN 110654970A CN 201911080732 A CN201911080732 A CN 201911080732A CN 110654970 A CN110654970 A CN 110654970A
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- unlocking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a drop test device and a lifting device thereof, belonging to the technical field of drop detection, wherein a transfer hanging strip is adopted; one end of the unlocking drag hook is connected with one end of the switching hanging strip; one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is suspended; one end of the lifting sling is connected with one end of the unlocking hook, which is far away from the unlocking rope, and the other end of the lifting sling is connected with an object to be tested through a connecting piece; the rope is recovered, one end of the rope is recovered with the hoisting sling is connected with one end of the switching sling, so that the technical effects of pure mechanical unlocking, low cost, convenience in operation, high flexibility, integration of hoisting, unlocking and recovery functions, reliable structural connection and high test efficiency are achieved.
Description
Technical Field
The invention relates to the technical field of drop detection, in particular to drop test equipment and a lifting device thereof.
Background
Drop tests are commonly used to simulate the free fall that a product may experience during handling, investigating the ability of the product to resist accidental impacts. The drop height is usually based on the product weight and the probability of a possible drop, and the drop surface should be a smooth, hard, rigid surface made of concrete or steel.
At present, a cabin drop test is an important means for researching the impact environment of ships and warships and the impact resistance of ship-borne equipment. However, when a drop test is performed on the cabin section, the traditional drop test equipment is complex in structure, and a simple device capable of realizing the drop and recovery test of the cabin section is lacked.
Disclosure of Invention
The invention provides a drop test device and a lifting device thereof, solves the technical problems that the traditional drop test device has a complex structure and poor universality and lacks a simple device capable of realizing drop and recovery tests of a cabin section in the prior art when a drop test is carried out on the cabin section, and achieves the technical effects of pure mechanical unlocking, low cost, convenient operation, high flexibility, integration of lifting, unlocking and recovery functions, reliable structural connection and high test efficiency.
In a first aspect, the present invention provides a lifting device for a drop test, comprising: switching the hanging strip; one end of the unlocking drag hook is connected with one end of the switching hanging strip; one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is suspended; one end of the lifting sling is connected with one end of the unlocking hook, which is far away from the unlocking rope, and the other end of the lifting sling is connected with an object to be tested through a connecting piece; and one end of the recovery rope is connected with the lifting sling.
Preferably, the unlocking hook comprises: a drawbar; a drawbar hook handle located at a distal end of the drawbar; the draw hook comprises a draw hook claw, the draw hook claw is located at one end, far away from the draw hook handle, of the draw hook rod, wherein the draw hook claw, the draw hook handle and the draw hook rod are integrally processed and formed.
Preferably, one end of the draw hook rod is provided with a first through hole, and one end of the draw hook rod close to the draw hook handle is provided with a second through hole; the pull hook handle is of an arc-shaped closed structure, and a third through hole is formed in the center of the pull hook handle.
Preferably, the diameter of the first through hole is larger than that of the second through hole, and the diameter of the third through hole is larger than that of the first through hole.
Preferably, the hook pulling claw is provided with a hook pulling groove, and the hook pulling groove is bent at a preset angle.
Preferably, the lifting sling is hung on the draw hook groove through a ring eye and is connected with the unlocking draw hook through the draw hook groove.
Preferably, the method further comprises the following steps: and one end of the elastic rope is connected with the unlocking hook through the second through hole, and the other end of the elastic rope is connected with the switching hanging strip.
Preferably, the method further comprises the following steps: and the shackle is connected with one end of the switching hanging strip at one end and connected with the unlocking drag hook at the other end through the third through hole.
Preferably, the connecting piece is a lifting ring screw, the threaded part of the lifting ring screw is connected with the object to be tested, and the eye part of the lifting ring screw is connected with the lifting sling.
In a second aspect, an embodiment of the present invention provides a drop test apparatus, including the aforementioned lifting device for a drop test.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a drop test device and a lifting device thereof, comprising: the device comprises a switching sling, an unlocking drag hook, an unlocking rope, a lifting sling and a recovery rope, wherein one end of the switching sling is connected with a truss hook, the other end of the switching sling is connected with one end of the unlocking drag hook, one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is used for being held by an operator; one end of the lifting sling is connected with one end of the unlocking drag hook far away from the unlocking rope, the other end of the lifting sling is connected with an object to be tested through a connecting piece, one end of the recovery rope is connected with the truss lifting hook, and the other end of the recovery rope is connected with the lifting sling. In actual use, firstly, the annular eye on the unlocking hook is hung on a truss lifting hook of a traditional crane, then the recovery rope and the switching hanging strip are firstly installed on the truss lifting hook, then the recovery rope and the lifting hanging strip are installed on an object to be tested, the unlocking rope is installed on the unlocking hook, the lifting hanging strip is hung on the unlocking hook, and the rest of the devices are installed in place according to requirements, and the truss lifting is started to lift the whole device. In the process, the rope is recovered and collected by an operator all the time according to the position of the object to be tested; after the object to be tested is hung to a target position, a rope recovery operator rapidly applies external force, the unlocking rope is pulled manually to generate a rotating moment, so that the unlocking drag hook generates rotating motion, and when a certain rotating angle is reached, the product immediately falls, namely the object to be tested is unlocked and falls; after the object to be tested falls, the truss crane continues to be lifted, the object to be tested is lifted to a recovery point through a recovery rope, the technical problems that the traditional drop test equipment is complex in structure and poor in universality when a drop test is carried out on a cabin section in the prior art are solved, the falling of the cabin section and the simple device for the recovery test are lacked, the pure mechanical unlocking is achieved, the cost is low, the operation is convenient, the flexibility is large, the lifting, the unlocking and the recovery functions are integrated, the structural connection is reliable, and the technical effect of high test efficiency is achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic structural diagram of a lifting device for a drop test according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the unlocking hook in fig. 1.
Description of reference numerals: the device comprises a recovery rope 1, a switching hanging strip 2, a shackle 3, an unlocking draw hook 4, a draw hook rod 41, a draw hook handle 42, a draw hook claw 43, a first through hole 44, a second through hole 45, a third through hole 46, an elastic rope 5, an unlocking rope 6, a lifting hanging strip 7, a lifting bolt 8, a truss lifting hook 9 and an object to be tested 10.
Detailed Description
The embodiment of the invention provides a drop test device and a lifting device thereof, which are used for solving the technical problems that in the prior art, when a drop test is carried out on a cabin section, the traditional drop test device is complex in structure and poor in universality, and a simple device capable of realizing the drop and recovery test of the cabin section is lacked.
The technical scheme in the embodiment of the invention has the following general idea:
according to the drop test equipment and the lifting device thereof provided by the embodiment of the invention, the through-connection hanging strip is adopted; one end of the unlocking drag hook is connected with one end of the switching hanging strip; one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is suspended; one end of the lifting sling is connected with one end of the unlocking hook, which is far away from the unlocking rope, and the other end of the lifting sling is connected with an object to be tested through a connecting piece; retrieve the rope, retrieve the rope one end with lift by crane the suspender connect with the one end of switching suspender is connected, and then has reached pure mechanical type unblock, with low costs, convenient operation, flexibility big, collect and lift by crane, unblock, retrieve function in an organic whole, structural connection is reliable, the high technological effect of test efficiency.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a lifting device for a drop test in an embodiment of the present invention, as shown in fig. 1:
the lifting device for drop test comprises: the sling 2 is switched.
Specifically, the boom hanger 9 is a component attached to a crane or other hoisting equipment, and in actual use, the lifting device can be connected to the boom hanger 9, and further, the boom hanger 9 can perform operations such as hoisting. Further, the top end of the switching hanging strip 2 is connected with a truss hanging hook 9, the model of the switching hanging strip 2 is preferably a standard hanging strip of a common outsourcing part, and the switching hanging strip can be adjusted and designed according to needs during actual use, and the switching hanging strip is not limited in the embodiment. The shape of the switching hanging strip 2 is annular, the rated load is full load, and the switching hanging strip 2 is mainly used for switching between the truss lifting hook 9 and the unlocking drag hook 4, so that the purpose of avoiding mismatching between the truss lifting hook 9 and the interface of the unlocking drag hook 4 is achieved.
The lifting device for drop test further comprises: and one end of the unlocking drag hook 4 is connected with one end of the switching hanging strip 2.
Further, the unlocking hook 4 comprises: a drawbar 41; a drawbar 42, the drawbar 42 being located at an end of the drawbar 41; and the draw hook claw 43 is positioned at one end of the draw hook handle 42, which is far away from the draw hook rod 41, wherein the draw hook claw 43, the draw hook handle 42 and the draw hook rod 41 are integrally formed.
Further, one end of the drawbar 41 is provided with a first through hole 44, and one end of the drawbar 41 close to the drawbar handle 42 is provided with a second through hole 45; the draw hook handle 42 is an arc-shaped closed structure, and a third through hole 46 is formed in the center of the draw hook handle 42.
Further, the diameter of the first through hole 44 is larger than that of the second through hole 45, and the diameter of the third through hole 46 is larger than that of the first through hole 44.
Further, the hook pulling claw 43 has a hook pulling groove, and the hook pulling groove is bent at a predetermined angle.
Specifically, the unlocking hook 4 is connected to the bottom of the adapting hanging strip 2, that is, the end far away from the truss hanging hook 9, in this embodiment, the unlocking hook 4 includes a hook rod 41, a hook handle 42 and a hook claw 43 as an optimum, and in actual use, the shape and composition of the unlocking hook 4 can be adjusted and designed as required, and this embodiment is not particularly limited. Specifically, the method comprises the following steps: the draw hook rod 41 is a vertical rod-shaped structure, the top of the draw hook rod 41 is provided with a first through hole 44, the position of the draw hook rod 41 close to the tail end is provided with a second through hole 45, the diameter of the second through hole 45 is preferably smaller than that of the first through hole 44, and the draw hook rod can be connected with other parts through the first through hole 44 and the second through hole 45; the draw hook handle 42 is an annular closed structure, meanwhile, a third through hole 46 is concentrically formed in the center of the draw hook handle 42, the diameter of the third through hole 46 is larger than that of the first through hole 44, and the outer edge of one side of the draw hook handle 42 is flush with the outer edge of the draw hook rod 41; the draw hook claw 43 is the draw hook head of the unlocking draw hook 4, the other end of the draw hook claw 43 is fixedly connected with the draw hook handle 42, the outer edge of the opposite other side of the draw hook handle 42 is parallel and level with the outer edge of the draw hook claw 43, a draw hook groove is formed in the draw hook claw 43, the draw hook groove has a certain bending angle, and other parts can be hung on the draw hook groove in practical use.
Furthermore, the retractor claw 43, the retractor handle 42 and the retractor rod 41 of the unlocking retractor 4 are integrally machined, i.e., are integrally machined and formed. The unlocking draw hook 4 is a self-made piece, the rated load is a full load, and the unlocking draw hook is used for hoisting, transferring and falling unlocking of an object to be tested such as a test cabin section. The design of the unlocking drag hook 4 makes full use of the lever force application principle, and the specific structure of the unlocking drag hook can be determined through the rated load of the test cabin section and the external force required to be applied in the unlocking process.
The lifting device for drop test further comprises: and one end of the unlocking rope 6 is connected with the unlocking drag hook 4, and the other end of the unlocking rope 6 is suspended.
Particularly, in this embodiment, the unlocking rope 6 is a standard circular cable of a common outsourcing component as an optimal selection, and two ends of the unlocking rope 6 are of a loop-free type, in actual work, one end of the unlocking rope 6 is manually tied to a hole at the upper end of the unlocking hook 4, the specific position is that one end of the unlocking rope 6 is tied to the first through hole 44, the other end of the unlocking rope 6 is held by an operator, and the lever principle is adopted, so that the unlocking hook 4 is rotated through telescopic transmission force, therefore, the unlocking rope 6 and the unlocking hook 4 are matched with each other, a purely mechanical manual unlocking mode is realized, hoisting, unlocking and recycling functions are integrated, the structural connection is reliable, the operation is convenient, further, torque is applied by adopting the lever principle, and the technical effect that the unlocking force value is controllable is realized.
The lifting device for drop test further comprises: and one end of the lifting sling 7 is connected with one end, far away from the unlocking rope 6, of the unlocking hook 4, and the other end of the lifting sling 7 is connected with the object to be tested 10 through a connecting piece.
Furthermore, the lifting sling 7 is hung on the draw hook groove through a ring eye and is connected with the unlocking draw hook 4 through the draw hook groove.
Furthermore, the connecting piece is a lifting ring screw 8, the threaded part of the lifting ring screw 8 is connected with the object to be tested 10, and the eye part of the lifting ring screw 8 is connected with the lifting sling 7.
Specifically, in the embodiment, the lifting sling 7 is preferably a standard circular cable as a common outsourcing article, one end of the lifting sling 7 is an annular eye, the other end of the lifting sling 7 is not provided with the annular eye, the rated load is a full load, and the lifting sling 7 is mainly used for connecting the unlocking draw hook 4 with an object to be tested 10, such as a test cabin section. Specifically, the method comprises the following steps: the upper end of the lifting sling 7 is arranged at the drag hook groove connecting part of the unlocking drag hook 4, and the lower end is arranged on the corresponding product interface by using a connecting piece according to the posture of the object to be tested 10. Furthermore, in the embodiment, a connection piece is preferably used as the lifting bolt 8, wherein the lifting bolt 8 is a standard piece, the selection type of the lifting bolt 8 is matched with a threaded hole on the object to be tested 10, the threaded part of the lifting bolt 8 is connected with the object to be tested 10, the eye part of the lifting bolt 8 is connected with the lifting sling 7, and meanwhile, the installation number of the lifting bolts 8 can also be selected according to actual needs.
The lifting device for drop test further comprises: and one end of the recovery rope 1 is connected with the lifting sling 7.
Specifically, in the embodiment, the recovery rope 1 is preferably a standard round cable as a common outsourcing article, the recovery rope 1 is provided with eyelets at two end positions, the rated load is selected as a full load, and the recovery rope 1 is mainly used for hoisting an object to be tested 10 to be recovered singly. The upper end of the recovery rope 1 is arranged on a truss lifting hook 9, and the lower end of the recovery rope 1 is arranged on a lifting bolt 8. Further, the length of the retrieval rope 1 needs to be calculated according to the height requirement in the actual test process.
Further, the method also comprises the following steps: and one end of the elastic rope 5 is connected with the unlocking draw hook 4 through the second through hole 45, and the other end of the elastic rope 5 is connected with the switching hanging strip 2.
Specifically, the elastic rope 5 mainly uses the elastic force to maintain the phase relationship of the unlocking hook 4 in the no-load state, that is, to stabilize the phase relationship of the unlocking hook 4 in the no-load state, thereby preventing the phenomenon of unhooking and the like caused by rotation due to center-of-gravity deviation. One end of the elastic rope 5 is connected with the unlocking drag hook 4, the other end penetrates into the switching hanging strip 2, and the elastic rope 5 is in a free state. In this embodiment, the elastic cord 5 is preferably used as a rubber band, the elastic force is moderate, and other types of elastic members can be selected according to actual needs in actual work, which is not particularly limited in this embodiment.
Further, the method also comprises the following steps: and one end of the shackle 3 is connected with one end of the switching hanging strip 2, and the other end of the shackle 3 is connected with the unlocking draw hook 4 through the third through hole 46.
Specifically, in the embodiment, the shackle 3 is preferably an ordinary outsourcing standard S6-grade bow shackle, the rated load is a full load, and the shackle 3 is mainly used for connecting the switching hanging strip 2 and the unlocking hook 4, so that the upper end of the shackle 3 is connected with the switching hanging strip 2, and the lower end of the shackle 3 is connected with the unlocking hook 4 through the third through hole 46.
Further, when the object to be tested 10 is a test cabin section, and a cabin section drop test is performed, the specific working process is as follows: firstly, hanging a ring eye on an unlocking drag hook 4 on a truss lifting hook 9 of a traditional crane, ensuring that the unlocking drag hook 4 cannot be unhooked in the process of lifting a pod section by a truss under the action of elastic force of an elastic rope 5 by the unlocking drag hook 4, further firstly installing a recovery rope 1 and a switching hanging strip 2 on the truss lifting hook 9, then installing the recovery rope 1 and a lifting hanging strip 7 on a test cabin section, installing an unlocking rope 6 on the unlocking drag hook 4, hanging the lifting hanging strip 7 on a drag hook groove of the unlocking drag hook 4, installing the rest in place according to requirements, and starting the truss lifting to lift the whole device. In the process, the recovery rope 1 is always wound and unwound by an operator according to the position of the test cabin section; after the test cabin section is hung to a specified height, namely a target position, an operator operates the recovery rope 1 to rapidly apply external force, the unlocking rope 6 is manually pulled to generate a rotating moment, so that the unlocking drag hook 4 generates rotating motion, and after a certain rotating angle is reached, a product immediately falls, namely the test cabin section is unlocked and falls; after the test cabin section falls, the truss crane continues to be lifted, and the test cabin section is hoisted to a recovery point through the recovery rope 1.
Therefore, the lifting device in the embodiment can simultaneously realize hoisting, falling and recovery of the test cabin section, the falling trigger mechanism adopts a pure mechanical mode to unlock and fall, the lever principle is adopted to apply torque, controllable unlocking is realized, and meanwhile, the recovery cable rope is arranged, so that the recovery cabin section can be realized when a horizontal falling test is carried out. Meanwhile, most parts are purchased finished parts, so the structure is simple, the replacement is convenient, and the technical effects of low drop test cost, high flexibility, low requirement on the field and high test efficiency are further achieved.
Example two
The embodiment of the invention also provides a drop test device which comprises the lifting device for the drop test.
Various changes and specific examples of the lifting device for drop test in the first embodiment are also applicable to the drop test equipment of the present embodiment, and the implementation method of the lifting device for drop test in the present embodiment is clear to those skilled in the art from the foregoing detailed description of the lifting device for drop test, so that the detailed description is omitted here for the sake of brevity.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a drop test device and a lifting device thereof, comprising: the device comprises a switching sling, an unlocking drag hook, an unlocking rope, a lifting sling and a recovery rope, wherein one end of the switching sling is connected with a truss hook, the other end of the switching sling is connected with one end of the unlocking drag hook, one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is used for being held by an operator; one end of the lifting sling is connected with one end of the unlocking drag hook far away from the unlocking rope, the other end of the lifting sling is connected with an object to be tested through a connecting piece, one end of the recovery rope is connected with the truss lifting hook, and the other end of the recovery rope is connected with the lifting sling. In actual use, firstly, the annular eye on the unlocking hook is hung on a truss lifting hook of a traditional crane, then the recovery rope and the switching hanging strip are firstly installed on the truss lifting hook, then the recovery rope and the lifting hanging strip are installed on an object to be tested, the unlocking rope is installed on the unlocking hook, the lifting hanging strip is hung on the unlocking hook, and the rest of the devices are installed in place according to requirements, and the truss lifting is started to lift the whole device. In the process, the rope is recovered and collected by an operator all the time according to the position of the object to be tested; after the object to be tested is hung to a target position, a rope recovery operator rapidly applies external force, the unlocking rope is pulled manually to generate a rotating moment, so that the unlocking drag hook generates rotating motion, and when a certain rotating angle is reached, the product immediately falls, namely the object to be tested is unlocked and falls; after the object to be tested falls, the truss crane continues to be lifted, the object to be tested is lifted to a recovery point through a recovery rope, the technical problems that the traditional drop test equipment is complex in structure and poor in universality when a drop test is carried out on a cabin section in the prior art are solved, the falling of the cabin section and the simple device for the recovery test are lacked, the pure mechanical unlocking is achieved, the cost is low, the operation is convenient, the flexibility is large, the lifting, the unlocking and the recovery functions are integrated, the structural connection is reliable, and the technical effect of high test efficiency is achieved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (10)
1. A lifting device for drop tests, comprising:
switching the hanging strip;
one end of the unlocking drag hook is connected with one end of the switching hanging strip;
one end of the unlocking rope is connected with the unlocking drag hook, and the other end of the unlocking rope is suspended;
one end of the lifting sling is connected with one end of the unlocking hook, which is far away from the unlocking rope, and the other end of the lifting sling is connected with an object to be tested through a connecting piece;
and one end of the recovery rope is connected with the lifting sling.
2. The lifting device for drop tests of claim 1, wherein said unlocking hook comprises:
a drawbar;
a drawbar hook handle located at a distal end of the drawbar;
the draw hook comprises a draw hook claw, the draw hook claw is located at one end, far away from the draw hook handle, of the draw hook rod, wherein the draw hook claw, the draw hook handle and the draw hook rod are integrally processed and formed.
3. The lifting device for drop tests as claimed in claim 2, wherein one end of said drawbar is provided with a first through hole and one end of said drawbar near said drawbar handle is provided with a second through hole;
the pull hook handle is of an arc-shaped closed structure, and a third through hole is formed in the center of the pull hook handle.
4. The lifting device for drop tests of claim 3, wherein the diameter of the first through hole is greater than the diameter of the second through hole, and the diameter of the third through hole is greater than the diameter of the first through hole.
5. The lifting device for drop tests as claimed in claim 2, wherein said hooking jaw has a hooking groove, and said hooking groove is bent at a predetermined angle.
6. The lifting device for drop tests as claimed in claim 5, characterized in that the lifting sling is hung on the draw hook groove through a loop eye and is connected with the unlocking hook through the draw hook groove.
7. A lifting device for drop testing as claimed in claim 3, further comprising:
and one end of the elastic rope is connected with the unlocking hook through the second through hole, and the other end of the elastic rope is connected with the switching hanging strip.
8. A lifting device for drop testing as claimed in claim 3, further comprising:
and the shackle is connected with one end of the switching hanging strip at one end and connected with the unlocking drag hook at the other end through the third through hole.
9. The lifting device for drop tests according to claim 1, wherein said attachment member is an eye screw, and wherein a threaded portion of said eye screw is connected to said object to be tested, and an eye portion of said eye screw is connected to said lifting harness.
10. A drop test apparatus comprising a lifting device for drop tests as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911080732.5A CN110654970A (en) | 2019-11-07 | 2019-11-07 | Drop test equipment and lifting device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911080732.5A CN110654970A (en) | 2019-11-07 | 2019-11-07 | Drop test equipment and lifting device thereof |
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| CN110654970A true CN110654970A (en) | 2020-01-07 |
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Cited By (1)
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| CN111588221A (en) * | 2020-05-29 | 2020-08-28 | 邱林 | Mosquito net frame with pillar and slide lock |
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Application publication date: 20200107 |