CN216012671U - Safety net shock resistance test device - Google Patents

Abstract

The utility model relates to a safety device test device's field especially relates to a safety net shock resistance test device, and it includes the support body, is provided with on the support body to be used for doing shock resistance test's test heavy object to the safety net, is located the test frame that test heavy object bottom slope set up to and be located the buffer gear of test frame bottom, buffer gear includes the first case and the second case that lock of each other and relative slip set up, first case peg graft set up in second roof portion, first incasement is provided with the buffer board, first case with vertically between the buffer board is provided with a plurality of first elastic components, the buffer board with vertically between the second incasement diapire is provided with a plurality of buffer unit. The safety net has the advantages that the phenomenon that a test heavy object penetrates through the safety net to drop to the ground is reduced, and the test heavy object is protected.

Description

Safety net shock resistance test device

Technical Field

The application relates to the field of safety facility testing devices, in particular to a safety net impact resistance testing device.

Background

According to national standard of the people's republic of China (GB 5725-2009), safety nets are used for preventing people and objects from falling or preventing and reducing falling and object damage, and are woven by using chemical fibers as main materials. The safety net has extensive usage, if in construction high altitude construction position, its below must hang the safety net to prevent the emergence of the high altitude construction hidden danger that falls, need the stress strength of net must withstand the human body and carry article such as instrument and fall the vertical pulling force and the impact strength that weight and impact distance produced, therefore the product quality of safety net must be through shock resistance test detection and qualified rear usable, the safety net shock resistance test step as follows:

1. intercepting a safety net with the length and the width of (1 multiplied by 1) m, wherein one side of the safety net is a complete net edge;

2. the safety net is clamped in a testing frame which forms an included angle of 30 degrees with the ground in a natural state, and the length and the width of the testing frame are (1 multiplied by 1) m. And releasing the test weight at the position 1 meter away from the center of the safety net. The specification of the test weight was: the diameter is 50 mm, the mass (5 cm 0.2) kg, the end face is the minimum section of the test weight, and the corners are sharp;

3. visually, if the test weight penetrates the mesh body or a tear hole occurs through which the test weight can penetrate, the test is deemed to have failed.

When the safety net product quality is not good, the test heavy object can pass through the net body, and the current test device lacks the protection device of test heavy object for directly pound after passing through the net body and fall to ground, and then cause the damage of test heavy object and ground.

SUMMERY OF THE UTILITY MODEL

In order to reduce the phenomenon of safety net slippage on test frame, be convenient for this application provide a safety net shock resistance test device.

The application provides a safety net shock resistance test device adopts following technical scheme:

a safety net impact resistance test device comprises a frame body, wherein a test heavy object used for performing impact resistance test on a safety net, a test frame obliquely arranged at the bottom of the test heavy object and a buffer mechanism arranged at the bottom of the test frame are arranged on the frame body;

buffer gear is including the first case and the second case that lock and relative slip set up of each other, first case peg graft set up in second roof portion, be provided with the buffer board in the first case, first case with vertically between the buffer board be provided with a plurality of first elastic component, the buffer board with vertically between the second incasement diapire be provided with a plurality of buffering subassemblies.

Through adopting above-mentioned technical scheme, release the test heavy object, carry out the shock resistance test of safety net, after the test heavy object passes the safety net, fall to first case top surface, first case slides downwards and supports and presses buffer assembly, buffer assembly plays the deceleration effect to the test heavy object this moment, the descending speed of test heavy object obtains reduction by a wide margin, and simultaneously, deformation takes place for first spring, reduce the elastic potential energy that the test heavy object upwards bounced, make the test heavy object detain at first case top surface, as above set up, accomplish the buffering to the test heavy object, it drops to ground and then the condition of damage takes place to reduce the test heavy object.

Preferably, the buffer assembly comprises a sleeve and a sliding rod with the bottom end inserted into the sleeve, the bottom end of the sleeve is fixedly connected with the bottom wall of the lower half box, the top end of the sliding rod is fixedly connected with the bottom surface of the buffer plate, a first connecting ring is sleeved on one end, close to the buffer plate, of the sliding rod, a second connecting ring is sleeved on the sleeve, and a second elastic piece is fixed between the first connecting ring and the second connecting ring.

By adopting the technical scheme, when the upper half box slides downwards, the buffer plate drives the sliding rod to slide downwards and extrude the second elastic piece downwards, the second connecting ring provides certain reaction force for the second elastic piece to buffer the test heavy object, the phenomenon that the test heavy object is damaged is reduced, and after the test heavy object is moved away, the second elastic piece is restored to enable the upper half box to reset to wait for finishing the buffering of the follow-up test.

Preferably, the second attachment ring is secured to the sleeve top end.

Through adopting above-mentioned technical scheme, when the safety net quality is relatively poor, make the test heavy object fall the impact force on first case top surface great, excessively compress the second elastic component, sleeve top bottom is impressed in second elastic component top this moment, make the direct butt in second incasement diapire of slide bar bottom and can't play good buffering effect, set up the second go-between on the sleeve top, make the second elastic component be located the compression of slide bar outer wall, and then make at the unable direct butt of slide bar in second incasement diapire, then make the test heavy object receive better cushioning effect.

Preferably, the two opposite inner side walls of the lower half box are vertically provided with sliding grooves, the sliding grooves are internally provided with limiting blocks in a sliding manner, and the limiting blocks are fixedly connected with the outer side walls of the upper half box.

Through adopting above-mentioned technical scheme, when the test heavy object falls to first half case top surface, first half case slides downwards for have flexible function between first half case and the second half case, the cooperation buffering subassembly is accomplished the buffering to the test heavy object, and when first half case upwards resets, the stopper reduces the condition emergence of first half case slippage.

Preferably, the test frame comprises a first frame and a second frame which are used in cooperation with each other, and a plurality of fixing pieces are arranged between the first frame and the second frame.

Through adopting above-mentioned technical scheme, when fixed safety net, lift the second frame, place the safety net on first frame and lock second frame, the mounting plays the fixed action to first frame and second frame, and a plurality of mountings carry out even and inseparable fixed all around to the test frame, reduce the condition appearance of safety net slippage from the test frame.

Preferably, the first frame includes four frames that the cross-section is L shape, the frame includes diaphragm and riser, diaphragm and riser form a step, the second frame includes four sideboard, the sideboard bottom surface is fixed with a plurality of locating levers, a plurality of locating holes that supply the locating lever male have been seted up to the diaphragm top surface.

Through adopting above-mentioned technical scheme, lift the second frame, with the safety net tiled on first frame, make safety net edge cover on the locating hole of first frame, put down the second frame, the locating lever that is located the second frame bottom surface inserts in the safety hole after contacting the safety net, closely fixes the safety net between first frame and second frame, reduces the slip phenomenon of safety net.

Preferably, the rack body is provided with a support positioned at the top of the test frame, a release part for releasing the test heavy object is fixed at the top of the support, and the test heavy object is detachably connected with the support.

Through adopting above-mentioned technical scheme, manual operation hardly keeps static state release test heavy object for the test heavy object has certain initial velocity whereabouts, leads to test result not accurate, through utilizing releaser mechanical operation release test heavy object, improves test result's precision.

Preferably, the release member is an electro-permanent magnet, the test weight is a magnet, the bracket is provided with a through hole, a magnetic steel is vertically fixed in the through hole, the electro-permanent magnet is positioned at the top end of the magnetic steel, and the test weight is inserted in the magnetic steel.

By adopting the technical scheme, the electro-permanent magnet is closed, the test heavy object moves in a free falling body from the bottom of the magnetic conduction steel, and the test heavy object falls on the safety net by smashing, so that the device is simple, and the effect of mechanically releasing the test heavy object can be achieved.

Preferably, a plurality of universal wheels for moving the frame body are fixed at the bottom of the frame body.

Through adopting above-mentioned technical scheme, the staff of being convenient for of universal wheel removes test device, and the universal wheel contains the brake piece, and it is stable to lock the holding frame body after removing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first elastic piece and the second elastic piece are arranged, so that the test heavy object is decelerated, the falling speed of the test heavy object is reduced, the test heavy object is buffered, and the test heavy object is protected after passing through the safety device;

2. the upper half box and the lower half box have a telescopic function by arranging the sliding chute and the limiting block, so that the buffer mechanism bears the test heavy object and buffers the test heavy object;

3. through utilizing the release piece to release the test heavy object, reduce the manual release of staff and exert the phenomenon of initial velocity to the test heavy object, improve the precision of test result.

Drawings

FIG. 1 is a schematic overall structure diagram of a safety net impact resistance test device in an embodiment of the present application;

FIG. 2 is a schematic view of the buffer mechanism according to the embodiment of the present application;

FIG. 3 is a schematic cross-sectional view taken along line A-A of a test frame in an embodiment of the present application.

Reference numerals: 1. a frame body; 2. a test frame; 21. a first frame; 211. a transverse plate; 212. a vertical plate; 22. a second frame; 3. testing a heavy object; 4. a buffer mechanism; 41. an upper half box; 42. a lower half box; 5. a buffer plate; 6. a first elastic member; 7. a buffer assembly; 71. a sleeve; 72. a slide bar; 73. a first connecting ring; 74. a second connection ring; 75. a second elastic member; 8. a chute; 9. a limiting block; 10. a fixing member; 11. positioning a rod; 12. positioning holes; 13. a release member; 14. a support; 15. magnetic conductive steel; 16. a universal wheel.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The distribution of the internal magnetic circuits of the electric permanent magnet is controlled and converted by an electric control system, so that the permanent magnetic field is self-balanced in the system and is externally represented as a demagnetizing and relaxing state (namely a non-material-absorbing state); or released to the working magnetic pole surface, and is characterized as a magnetizing clamping state (namely a material sucking state) outwards. Under the condition of power-on, the magnetic object is adsorbed, and after the power-off, the magnetic object is released and falls under the action of self gravity.

The embodiment of the application discloses safety net shock resistance test device. Referring to fig. 1, the safety net impact resistance test device comprises a frame body 1, wherein a test frame 2, a test heavy object 3 and a buffer mechanism 4 are arranged on the frame body 1. The test frame 2 inclines to set up in 1 bottom of support body, and test frame 2 is the square frame of length, width (1 x 1) m, and test frame 2 sets up to height and be 30 contained angles with ground after low before setting up, and the welding of 2 front ends of test frame and 1 front end of support body, 2 rear ends of test frame pass through two bracing pieces and 1 rear end welded fastening of support body. The test heavy object 3 is arranged at the upward height of one meter in the center of the test frame 2, the buffer mechanism 4 is positioned in a cavity between the bottom of the test frame 2 and the ground, and the buffer mechanism 4 is fixedly connected with the frame body 1.

Referring to fig. 2, the buffering mechanism 4 includes an upper half case 41 and a lower half case 42 that are fastened to each other, the upper half case 41 is inserted into the top of the lower half case 42, two opposite inner side walls of the lower half case 42 are vertically provided with sliding grooves 8, the sliding grooves 8 are provided with limiting blocks 9 in a sliding manner, the limiting blocks 9 are fixedly connected with the outer side walls of the upper half case 41, so that the upper half case 41 is connected with the lower half case 42 in a sliding manner, thereby having a telescopic function between the upper half case 41 and the lower half case 42, and receiving the test heavy object 3 for buffering.

Referring to fig. 2, a buffer plate 5 is horizontally disposed in the upper half 41, a plurality of first elastic members 6 are vertically fixed between the top wall of the upper half 41 and the buffer plate 5, a plurality of buffer assemblies 7 are vertically fixed between the buffer plate 5 and the bottom wall of the lower half 42, and each buffer assembly 7 includes a sleeve 71, a sliding rod 72, and a second elastic member 75. The bottom end of the sleeve 71 is fixedly connected with the bottom wall of the lower half box 42, the bottom end of the sliding rod 72 is inserted into the sleeve 71, the top end of the sliding rod 72 is fixedly connected with the bottom surface of the buffer plate 5, a first connecting ring 73 is sleeved on one end, close to the buffer plate 5, of the sliding rod 72, a second connecting ring 74 is fixed on the top surface of the sleeve 71, the second elastic member 75 is sleeved on the sliding rod 72 and located between the first connecting ring 73 and the second connecting ring 74, in this embodiment, the first elastic member 6 and the second elastic member 75 are both springs. Both ends of the second elastic member 75 are fixedly coupled to the bottom surface of the first coupling ring 73 and the top surface of the second coupling ring 74, respectively.

When the test heavy object 3 falls on the top surface of the upper half box 41, the upper half box 41 slides downwards, the first elastic part 6 is extruded, the test heavy object 3 is preliminarily buffered, the buffer plate 5 is extruded simultaneously, the buffer plate 5 drives the slide rod 72 to slide downwards, the first connecting ring 73 and the second connecting ring 74 are close to each other and extrude the second elastic part 75, the second elastic part 75 deforms to buffer the test heavy object 3, the landing speed of the test heavy object 3 is greatly reduced, meanwhile, the elastic potential energy of the test heavy object 3 bouncing upwards is reduced by the first elastic part 6, and as above, the situation that the test heavy object 3 falls on the ground and is damaged is reduced.

Referring to fig. 1 and 3, the test frame 2 includes a first frame 21 welded to the frame body 1, and a second frame 22 detachably coupled to the first frame 21. First frame 21 includes four frames, and every frame all includes diaphragm 211 and riser 212, and diaphragm 211 forms a step with riser 212, and second frame 22 includes four sideboard, and the sideboard bottom surface is fixed with a plurality of locating levers 11, and locating lever 11 is located the sideboard four corners, and diaphragm 211 top surface runs through perpendicularly and sets up a plurality of locating holes 12 that supply locating lever 11 to pass. A plurality of fixing members 10 are provided between the first frame 21 and the second frame 22. The fastener 10 may be selected from a G-clip (G-clip not shown) or a quick-action clamp. In the present embodiment, the fixing member 10 is a quick clamp.

The edge of the safety net is covered on the positioning hole 12 of the first frame 21, and when the second frame 22 is buckled, the positioning rod 11 positioned on the bottom surface of the second frame 22 is contacted with the safety net and is inserted into the positioning hole 12, so that the safety net is tightly fixed between the first frame 21 and the second frame 22, and the sliding phenomenon of the safety net is reduced.

Referring to fig. 1 and 2, a support 14 is arranged at the top of the testing frame 2, the bottom end of the support 14 is welded and fixed with the bottom end of the frame body 1, a through hole is formed in the support 14, a magnetic steel 15 is vertically fixed in the through hole, and a release piece 13 is fixed at the top of the magnetic steel 15. In the embodiment of the application, the release 13 is an electro-permanent magnet and the test weight 3 is a magnet. The test weight 3 is sleeved on the periphery of the bottom end of the magnetic steel 15.

Referring to fig. 1, a plurality of universal wheels 16 are fixed at the bottom of the frame body 1, and the universal wheels 16 comprise rolling wheels and braking pieces, so that the test device can be conveniently moved and fixed by workers.

The implementation principle of the safety net impact resistance test device in the embodiment of the application is as follows: the release 13 releases test heavy object 3, and test heavy object 3 pound and fall to the safety net and carry out the detection of safety net product quality, after test heavy object 3 passes the safety net, descend to first 41 top faces of case, and first 41 of case is downward for first elastic component 6, second elastic component 75 produce deformation, and cushion test heavy object 3, reduce test heavy object 3 and directly pound and fall to ground and then cause the phenomenon of damage.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A safety net impact resistance test device is characterized by comprising a frame body (1), wherein a test heavy object (3) used for performing an impact resistance test on a safety net, a test frame (2) obliquely arranged at the bottom of the test heavy object (3) and a buffer mechanism (4) arranged at the bottom of the test frame (2) are arranged on the frame body (1);

buffer gear (4) including first case (41) and second case (42) that lock each other and relative slip set up, first case (41) peg graft set up in second case (42) top, be provided with buffer board (5) in first case (41), first case (41) with vertically be provided with a plurality of first elastic component (6) between buffer board (5), buffer board (5) with vertically be provided with a plurality of buffer unit (7) between the bottom wall in second case (42).

2. The safety net impact test device according to claim 1, wherein the buffer assembly (7) comprises a sleeve (71) and a sliding rod (72) with the bottom end inserted into the sleeve (71), the bottom end of the sleeve (71) is fixedly connected with the inner bottom wall of the lower half box (42), the top end of the sliding rod (72) is fixedly connected with the bottom surface of the buffer plate (5), a first connecting ring (73) is sleeved on one end, close to the buffer plate (5), of the sliding rod (72), a second connecting ring (74) is sleeved on the sleeve (71), and a second elastic member (75) is fixed between the first connecting ring (73) and the second connecting ring (74).

3. The safety net impact testing apparatus of claim 2, wherein the second connecting ring (74) is located at the top end of the sleeve (71).

4. The safety net impact resistance test device according to claim 1, characterized in that sliding grooves (8) are vertically formed in two opposite inner side walls of the lower half box (42), a limiting block (9) is slidably arranged in each sliding groove (8), and the limiting block (9) is fixedly connected with the outer side wall of the upper half box (41).

5. The safety net impact resistance test device according to claim 1, characterized in that the test frame (2) comprises a first frame (21) and a second frame (22) which are used in cooperation with each other, and a plurality of fixing members (10) are arranged between the first frame (21) and the second frame (22).

6. The safety net impact resistance test device of claim 5, characterized in that, the first frame (21) includes four frames with L-shaped cross sections, the frames include horizontal plates (211) and vertical plates (212), the horizontal plates (211) and the vertical plates (212) form a step, the second frame (22) includes four side plates, a plurality of locating rods (11) are fixed on the bottom surfaces of the side plates, and a plurality of locating holes (12) for the locating rods (11) to be inserted are opened on the top surfaces of the horizontal plates (211).

7. The safety net impact resistance test device according to claim 1, characterized in that a bracket (14) is arranged on the frame body (1) and positioned at the top of the test frame (2), a release piece (13) for releasing the test weight (3) is fixed at the top of the bracket (14), and the test weight (3) is detachably connected with the bracket (14).

8. The safety net impact resistance test device according to claim 7, wherein the release member (13) is an electro-permanent magnet, the test weight (3) is a magnet, the bracket (14) is provided with a through hole, a magnetic conductive steel (15) is vertically fixed in the through hole, the electro-permanent magnet is positioned at the top end of the magnetic conductive steel (15), and the test weight (3) is inserted in the magnetic conductive steel (15).

9. The safety net impact resistance test device according to claim 1, characterized in that a plurality of universal wheels (16) for moving the frame body (1) are fixed at the bottom of the frame body (1).

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