CN111337216B - Safety net impact resistance test device - Google Patents
Safety net impact resistance test device Download PDFInfo
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- CN111337216B CN111337216B CN202010154266.7A CN202010154266A CN111337216B CN 111337216 B CN111337216 B CN 111337216B CN 202010154266 A CN202010154266 A CN 202010154266A CN 111337216 B CN111337216 B CN 111337216B
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- slideway
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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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Abstract
The invention relates to an impact resistance test device for a safety net, which comprises a test frame, wherein the test frame comprises a first slide way and a second slide way; a first guide rail is arranged between one end of the first slide way in the length direction of the first slide way and the ground, a second guide rail is arranged between one end of the second slide way in the length direction of the second slide way and the ground, and the first guide rail and the second guide rail are both positioned on the same side of the corresponding first slide way or second slide way; the test frame comprises a lifting piece and a fixing piece, the lifting piece is used for pulling the safety net between the first slideway and the second slideway through the first guide rail and the second guide rail, the fixing piece is used for fixing the safety net between the first slideway and the second slideway, and the safety net is completely paved between the first slideway and the second slideway; a hanging bracket is arranged on one side of the test frame, and a ball falling part used for hanging and releasing the test ball is arranged on the hanging bracket. The safety net has the effect of improving the safety of workers during installation of the safety net.
Description
Technical Field
The invention relates to the technical field of test devices, in particular to a safety net impact resistance test device.
Background
The safety net is a net which is arranged under or on the side of the safety net and has a protection function when high-altitude building construction equipment is installed or skills are performed, so that accidents caused by falling of people or objects are prevented. The safety net is composed of a net body, a side rope, a tying rope and a reinforcing rope. The net body is formed by knitting net ropes and is provided with a rhombic or square mesh. The safety net is a rectangular net, so that the safety of the safety net in use is ensured, the safety net is necessary to be subjected to an impact resistance test, a safety net testing frame needs to have a certain height according to the regulation of safety net impact resistance testing standards, and the safety net is generally tested by adopting iron test balls with a certain weight when subjected to the impact resistance test.
The prior Chinese patent with the publication number of CN204705459U discloses a safety net impact tester, which comprises a sample fixing frame, wherein a vertical frame is arranged on one side of the sample fixing frame, a lifting system and a displacement measurement system are arranged below the inner part of the vertical frame, the lifting system and the displacement measurement system are provided with control systems, the lifting system comprises a hoisting assembly and a steel wire rope winding device, the steel wire rope winding device is arranged above the hoisting assembly, a reversing device is arranged at the top of the vertical frame, and the lower part of the reversing device is connected with an impact release device and an impact steel ball which can be lifted through a steel wire rope; the bottom and the ground rigid connection of sample fixed frame, when placing the safety net, because sample fixed frame's height is higher, consequently need the staff to climb to sample fixed frame's top through the cat ladder and fix safety net and sample fixed frame.
The above prior art solutions have the following drawbacks: the staff need scramble to sample fixed frame's top and fix the safety net on sample fixed frame, and will fix four angles of safety net at least when fixed with the safety net, therefore the staff need scramble from top to bottom and just can fix whole safety net and finish, and because the climbing number of times is more and sample fixed frame highly higher at the climbing in-process, therefore this process has certain potential safety hazard.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the safety net impact resistance test device which has the advantage of improving the safety of workers during installation of the safety net.
The above object of the present invention is achieved by the following technical solutions:
a safety net impact resistance test device comprises a test frame, wherein the test frame comprises a plurality of first vertical rods and second vertical rods which are arranged along the vertical direction, a first slide way is fixedly connected to each first vertical rod, and a second slide way is fixedly connected to each second vertical rod;
a first guide rail is arranged between one end of the first slide way in the length direction of the first slide way and the ground, a second guide rail is arranged between one end of the second slide way in the length direction of the second slide way and the ground, and the first guide rail and the second guide rail are both positioned on the same side of the corresponding first slide way or second slide way;
the test frame comprises a lifting piece and a fixing piece, the lifting piece is used for pulling the safety net between the first slideway and the second slideway through the first guide rail and the second guide rail, the fixing piece is used for fixing the safety net between the first slideway and the second slideway, and the safety net is completely paved between the first slideway and the second slideway;
And a hanging bracket is arranged on one side of the test frame, and a ball falling part for hoisting and releasing the test ball is arranged on the hanging bracket.
Through adopting above-mentioned technical scheme, can stimulate the safety net to between first slide and the second slide through first guide rail and second guide rail through carrying the pulling piece, can avoid like this that the staff scrambles the top to first slide and second slide and fixes the safety net, just can guarantee the security of staff when the installation safety net.
The present invention in a preferred example may be further configured to: a first sliding part is arranged on the first guide rail in a sliding manner, and a second sliding part is arranged on the second guide rail in a sliding manner; the fixing piece comprises a first fixing piece and a second fixing piece, wherein the first fixing piece is used for fixing one edge of the safety net on the first sliding piece, and the second fixing piece is used for fixing one edge of the safety net away from the first sliding piece on the second sliding piece; the lifting piece comprises a first pull rope and a second pull rope, the first pull rope is used for pulling the first sliding piece to slide to the first slide way through the first guide rail, and the second pull rope is used for pulling the second sliding piece to slide to the second slide way through the second guide rail; the stabilizing member further comprises a limiting member for fixing the first sliding member on the first slideway and the second sliding member on the second slideway.
Through adopting above-mentioned technical scheme, can fix one side of safety net on first slider through first mounting, fix the another side of safety net on second slider through the second mounting, then on first stay cord and second stay cord stimulate first slider and second slider to first slide and second slide, then fix first slider and second slider on first slide and second slide through the locating part and can realize the installation of safety net, the security when the installation safety net has been improved.
The present invention in a preferred example may be further configured to: the first slideway and the second slideway are both in a circular tube shape, the first slideway is provided with a first sliding port along the length direction, the cross section of the first slideway is C-shaped, the second slideway is provided with a second sliding port along the length direction, and the cross section of the second slideway is C-shaped; the two ends of the first slide way along the length direction of the first slide way are opened, and the two ends of the second slide way along the length direction of the second slide way are opened; one end of the first slide way, which is close to the first guide rail, is provided with a first inlet, and one end of the second slide way, which is close to the second guide rail, is provided with a second inlet;
The first sliding parts are a plurality of first steel balls, the width of the first sliding opening is smaller than the diameter of the first steel balls, the second sliding parts are a plurality of second steel balls, and the width of the second sliding opening is smaller than the diameter of the second steel balls; one end of the first pull rope penetrates through a port of the first slide way, which is far away from the first inlet, and is fixedly connected with a first steel ball, which is far away from the first inlet, and one end of the second pull rope penetrates through a port of the second slide way, which is far away from the second inlet, and is fixedly connected with a second steel ball, which is far away from the second inlet; the first steel balls are connected through first connecting pieces to form a chain shape, and the second steel balls are connected through second connecting pieces to form a chain shape.
By adopting the technical scheme, the first steel ball can slide on the first slideway and the first guide rail, the second steel ball can slide on the second slideway and the second guide rail, the surface of the steel ball is smooth, and the sliding resistance is small. The first steel balls are connected through the first connecting piece, the second steel balls are connected through the second connecting piece, the first steel balls can be guaranteed to move integrally in the pulling of the first pull rope, and the second steel balls can be guaranteed to move integrally in the pulling of the second pull rope.
The present invention in a preferred example may be further configured to: the first connecting piece is a first iron chain, and two ends of the first iron chain are fixedly connected with corresponding first steel balls respectively; the second connecting piece is a second iron chain, and two ends of the second iron chain are fixedly connected with the corresponding second steel balls respectively.
Through adopting above-mentioned technical scheme, connect through the iron chain, can make the connection between the steel ball more stable to first steel ball is taken as the example, and first steel ball needs slide to first slide through first guide rail, connects first steel ball through first iron chain and also makes more convenient when the first steel ball of pulling is from first guide rail to first slide.
The present invention in a preferred example may be further configured to: the test frame comprises a first fixing pile and a second fixing pile, one end, far away from the first sliding piece, of the first pull rope is detachably connected with the first fixing pile, and one end, far away from the second sliding piece, of the second pull rope is detachably connected with the second fixing pile.
Through adopting above-mentioned technical scheme, use first stay cord as an example, first stay cord can be dismantled with first spud pile and be connected, can fix first stay cord on first spud pile after spreading out the safety net completely, can guarantee that first steel ball is located first slide completely.
The present invention in a preferred example may be further configured to: the limiting piece comprises two limiting clamping pieces and two limiting clamping blocks, and the two limiting clamping pieces respectively cover the port of the first slide way far away from the first inlet and the port of the second slide way far away from the second inlet; the limiting clamp plate is provided with a hole for the first pull rope or the second pull rope to pass through, and the size of the hole is smaller than that of the corresponding first steel ball or second steel ball; the two limiting fixture blocks are respectively positioned on the first steel ball far away from the first pull rope and the second steel ball far away from the second pull rope, and the limiting fixture blocks are abutted against the first inlet end or the second inlet end.
By adopting the technical scheme, the limiting clamping piece and the limiting clamping block can limit the first steel ball and the second steel ball, and the first steel ball and the second steel ball are ensured to be fixed in the first slideway and the second slideway respectively.
The present invention in a preferred example may be further configured to: the first fixing piece comprises a first hook arranged on the first steel ball, one end of the first hook is fixedly connected with the first steel ball, and the other end of the first hook is detachably connected with the safety net; the second fixing part comprises a second hook arranged on the second steel ball, one end of the second hook is fixedly connected with the second steel ball, and the other end of the second hook is detachably connected with the safety net.
Through adopting above-mentioned technical scheme, can hang the safety net between first couple and second couple, can dismantle and connect convenient and fast.
The present invention in a preferred example may be further configured to: the first pull rope is provided with a first stop block for preventing the first pull rope from completely separating from the first slide way, and the second pull rope is provided with a second stop block for preventing the second pull rope from completely separating from the second slide way.
Through adopting above-mentioned technical scheme, first stopper piece and second stopper piece set up the back, can guarantee when carrying out the installation of safety net on first guide rail and second guide rail that first stay cord and second stay cord are incomplete to break away from first slide and second slide, and it is more convenient when guaranteeing follow-up first stay cord of pulling and second stay cord.
The present invention in a preferred example may be further configured to: and a buffer part is arranged on the ground below the test frame.
By adopting the technical scheme, after the buffer piece is arranged, if the safety net is broken when the test ball falls, a certain buffering function is realized.
The present invention in a preferred example may be further configured to: the ball falling part comprises an electric block and an electromagnetic chuck arranged on the electric block.
By adopting the technical scheme, the electric hoist can be conveniently adjusted to lift, and the electromagnetic chuck can be electrified to more conveniently lift and fall the test ball.
In summary, the invention includes at least one of the following beneficial technical effects:
1. through the arrangement of the first guide rail, the second guide rail, the first slide way, the second slide way, the stable piece and the lifting piece, the safety net can be pulled between the first slide way and the second slide way through the lifting piece, and the operation safety of workers is guaranteed;
2. through the setting of bolster, can guarantee the security behind test ball drop.
Drawings
FIG. 1 is a schematic view of the overall structure of the safety net impact resistance testing device shown in this embodiment when a first steel ball is located in a first chute and a second steel ball is located in a second chute;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
FIG. 4 is a rear view of the impact resistance testing apparatus for the safety net shown in the present embodiment;
FIG. 5 is an enlarged view of portion C of FIG. 4;
FIG. 6 is a schematic view of the overall structure of the safety net impact resistance testing device shown in this embodiment when the first steel ball is located in the first guide rail and the second steel ball is located in the second guide rail;
FIG. 7 is an enlarged view of portion D of FIG. 6;
fig. 8 is an enlarged view of portion E of fig. 6;
fig. 9 is an enlarged view of portion F of fig. 6;
fig. 10 is a schematic view of a part of the structure of the impact resistance test apparatus for the safety net according to the present embodiment.
Fig. 11 is an enlarged view of portion G of fig. 10;
fig. 12 is an enlarged view of a portion H in fig. 10.
In the figure, 1, test frame; 11. a first vertical rod; 12. a second vertical rod; 13. a first slideway; 131. a first sliding port; 132. a first inlet; 14. a second slideway; 141. a second sliding port; 142. a second inlet; 15. a first guide rail; 151. a first chute; 16. a second guide rail; 161. a second chute; 17. fixing the rod; 18. a hanger; 181. an electric hoist; 182. an electromagnetic chuck; 19. a sand pit; 2. a first steel ball; 21. a first iron chain; 22. a first pull cord; 23. a first spud pile; 24. a first hook; 25. a first stopper; 3. a second steel ball; 31. a second iron chain; 32. a second pull cord; 33. a second spud pile; 34. a second hook; 35. a second stopper; 4. buckling; 41. a limiting card; 42. a limiting clamping block; 43. chamfering; 44. pulling the rope; 45. a snap ring; 5. an inner frame; 6. and (5) an outer frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the impact resistance test device for the safety net disclosed by the invention comprises a test frame 1, wherein the test frame 1 comprises five first vertical rods 11 and five second vertical rods 12 which are arranged along the vertical direction, a first slide way 13 is fixedly connected to the first vertical rods 11, and a second slide way 14 is fixedly connected to the second vertical rods 12. First slide 13 is provided with first guide rail 15 between its self length direction's one end and the ground, and second slide 14 is provided with second guide rail 16 between its self length direction's one end and the ground, and first guide rail 15 all inclines to set up and be located the homonymy of corresponding first slide 13 or second slide 14 with second guide rail 16, and first guide rail 15 all is fixed with ground through the dead lever 17 that sets up along vertical direction with second guide rail 16.
Referring to fig. 3 and 5, the first slideway 13 and the second slideway 14 are both in a circular tube shape, the first slideway 13 is provided with a first sliding port 131 along the length direction thereof, the cross section of the first slideway 13 is C-shaped, the second slideway 14 is provided with a second sliding port 141 along the length direction thereof, and the cross section of the second slideway 14 is C-shaped; the first slide port 131 and the second slide port 141 are disposed opposite to each other. The two ends of the first slideway 13 along the length direction are opened, and the two ends of the second slideway 14 along the length direction are opened; the first slide 13 has a first entrance 132 at an end adjacent to the first rail 15 and the second slide 14 has a second entrance 142 at an end adjacent to the second rail 16.
Referring to fig. 4, a hanging bracket 18 is disposed on one side of the test frame 1, and a ball dropping part for hanging and releasing the test ball is disposed on the hanging bracket 18, specifically, the hanging bracket 18 is disposed on one side of the first slideway 13 far away from the second slideway 14, and the ball dropping part includes an electric block 181 and an electromagnetic chuck 182 disposed on the electric block 181. A buffer member is arranged on the ground below the test frame 1, and specifically, the buffer member is a sand pit 19.
With reference to fig. 4, the test frame 1 comprises a lifting element for pulling the safety net between the first chute 13 and the second chute 14 via the first rail 15 and the second rail 16 and a stabilizing element for fixing the safety net between the first chute 13 and the second chute 14, the safety net lying completely flat between the first chute 13 and the second chute 14.
Referring to fig. 3 and 5, a first slider is slidably disposed on the first rail 15, and a second slider is slidably disposed on the second rail 16. Specifically, the first guide rail 15 and the second guide rail 16 are both in a circular tube shape, the caliber of the first guide rail 15 is equal to the caliber of the first slideway 13, and the caliber of the second guide rail 16 is equal to the caliber of the second slideway 14. The first guide rail 15 is provided with a first sliding chute 151 in a penetrating way along the length direction, and the cross section of the first guide rail 15 is C-shaped; the second guide rail 16 has a second sliding groove 161 formed therethrough along the longitudinal direction thereof, and the cross section of the second guide rail 16 has a C-shape. The first sliding chute 151 and the second sliding chute 161 are oppositely arranged, the width of the first sliding chute 151 is larger than that of the first sliding opening 131, and the lower side wall of the first sliding chute 151 is flush with the lower side wall of the first sliding opening 131; the width of the second slide slot 161 is greater than the width of the second slide opening 141, and the lower side wall of the second slide slot 161 is flush with the lower side wall of the second slide opening 141.
Referring to fig. 10, the first sliding member is a plurality of first steel balls 2, and referring to fig. 3, the width of the first sliding groove 151 is smaller than the diameter of the first steel balls 2, and the second sliding member is a plurality of second steel balls 3, and referring to fig. 5, the width of the second sliding groove 161 is smaller than the diameter of the second steel balls 3. The first steel balls 2 are connected through first connecting pieces to form a chain shape, and the second steel balls 3 are connected through second connecting pieces to form a chain shape. Specifically, the first connecting piece is a first iron chain 21, and two ends of the first iron chain 21 are respectively welded with the corresponding first steel balls 2; the second connecting piece is a second iron chain 31, and two ends of the second iron chain 31 are respectively welded with the corresponding second steel balls 3; the number of the first iron chains 21 is one less than that of the first steel balls 2, and the number of the second iron chains 31 is one less than that of the second steel balls 3.
Referring to fig. 10 and 11, the pulling member includes a first pulling rope 22 and a second pulling rope 32, and referring to fig. 6, the first pulling rope 22 is used to pull the first steel ball 2 to slide on the first slideway 13 through the first guide rail 15, and the second pulling rope 32 is used to pull the second steel ball 3 to slide on the second slideway 14 through the second guide rail 16. Specifically, referring to fig. 3, one end of the first pull rope 22 passes through the port of the first slideway 13 far away from the first inlet 132 and is fixedly connected with the first steel ball 2 far away from the first inlet 132 through the buckle 4; referring to fig. 5, one end of the second pulling rope 32 passes through the port of the second slideway 14 far from the second inlet 142 and is fixedly connected with the second steel ball 3 far from the second inlet 142 through a buckle 4, and the first pulling rope 22 and the second pulling rope 32 are respectively fastened on the corresponding buckles 4. With reference to fig. 2, the test frame 1 includes a first fixing pile 23 and a second fixing pile 33, and when the safety net is pulled between the first slide way 13 and the second slide way 14 and is tiled and fixed, one end of the first pull rope 22 far away from the first steel ball 2 is tightly tied on the first fixing pile 23, and one end of the second pull rope 32 far away from the second steel ball 3 is tightly tied on the second fixing pile 33.
Referring to fig. 8 and 10, the stabilizing member includes a first fixing member for fixing one side of the safety net to the first steel ball 2 and a second fixing member for fixing one side of the safety net away from the first steel ball 2 to the second steel ball 3. Specifically, the first fixing piece comprises a first hook 24 arranged on the first steel ball 2, one end of the first hook 24 is welded with the corresponding first steel ball 2, and the other end of the first hook 24 is in a hook shape and is detachably connected with the safety net; referring to fig. 5, the second fixing member includes a second hook 34 disposed on the second steel ball 3, one end of the second hook 34 is welded to the corresponding second steel ball 3, the other end of the second hook 34 is hook-shaped and detachably connected to the safety net, and two sides of the safety net can be hung on the corresponding first hook 24 and the second hook 34. With reference to fig. 3, one end of the first hook 24 connected to the safety net penetrates out of the first guide rail 15 through the first sliding groove 151 and penetrates out of the first slideway 13 through the first sliding port 131; referring to fig. 5, one end of the second hook 34 connected to the safety net penetrates out of the second rail 16 through the second sliding slot 161 and penetrates out of the second chute 14 through the second sliding port 141.
Referring to fig. 6 and 10, the steady further comprises a stop for fixing the first steel ball 2 on the first slide 13 and the second steel ball 3 on the second slide 14. Referring to fig. 7, the position limiter includes a position limiting clip 41 and a position limiting latch 42. Specifically, two retaining tabs 41 are provided, and in conjunction with fig. 3 and 5, the two retaining tabs 41 cover the port of the first slide channel 13 away from the first inlet 132 and the port of the second slide channel 14 away from the second inlet 142, respectively. The limiting card 41 is provided with a hole (not shown in the figure) for the first pulling rope 22 or the second pulling rope 32 to pass through, and the size of the hole is smaller than that of the corresponding first steel ball 2 or second steel ball 3. Two limiting clamping blocks 42 are arranged, the two limiting clamping blocks 42 are respectively positioned on the first steel ball 2 far away from the first pull rope 22 and the second steel ball 3 far away from the second pull rope 32, and the limiting clamping blocks 42 are abutted against the end of the first inlet 132 or the end of the second inlet 142. Specifically, the limiting fixture block 42 extends out of the first guide rail 15 through the corresponding first sliding groove 151 or extends out of the second guide rail 16 through the corresponding second sliding groove 161 and slides in the corresponding first sliding groove 151 or second sliding groove 161, and the size of the limiting fixture block 42 is larger than that of the corresponding first sliding opening 131 or second sliding opening 141; referring to fig. 9, chamfers 43 are disposed at the first inlet 132 and the second inlet 142, and after the chamfers 43 are disposed, the corresponding first hook 24 slides into the first sliding opening 131 or the second hook 34 slides into the second sliding opening 141.
Referring to fig. 6 and 7, the first rope 22 is provided with a first stopper 25 for preventing the first rope 22 from completely separating from the first slideway 13, and the second rope 32 is provided with a second stopper 35 for preventing the second rope 32 from completely separating from the second slideway 14. Specifically, the size of the first blocking block 25 and the size of the second blocking block 35 are larger than the size of the corresponding hole, with reference to fig. 10, the distance between the first blocking block 25 and the first steel ball 2 close to the first pull rope 22 is larger than the length of the side of the safety net connected with the first steel ball 2, the distance between the second blocking block 35 and the second steel ball 3 close to the second pull rope 32 is larger than the length of the side of the safety net connected with the second steel ball 3, with reference to fig. 5 and 8, that is, when the safety net needs to be installed between the first hook 24 and the second hook 34, the first steel ball 2 is located at the end of the first guide rail 15 close to the ground, the second steel ball 3 is located at the end of the second guide rail 16 close to the ground, and a worker can install the safety net between the first hook 24 and the second hook 34 without climbing. First stay cord 22 and second stay cord 32 all have certain length, and when first steel ball 2 all was located first guide rail 15 and second steel ball 3 all was located second guide rail 16, the one end that first steel ball 2 was kept away from to first stay cord 22 and the one end contact ground that second steel ball 3 was kept away from to second stay cord 32, guarantee that the staff conveniently stimulates first stay cord 22 and second stay cord 32 promptly.
Referring to fig. 10 and 12, a pulling rope 44 is detachably connected to each of the first steel ball 2 far away from the first pull rope 22 and the second steel ball 3 far away from the second pull rope 32 through a snap ring 45, and the pulling ropes 44 are respectively fastened to the corresponding snap rings 45. Referring to fig. 6, when the safety net is pulled between the first chute 13 and the second chute 14, an end of the pull string 44 away from the snap ring 45 is exposed out of the corresponding first rail 15 or second rail 16. After the test is completed, the first steel ball 2 can be recovered into the first guide rail 15 and the second steel ball 3 can be recovered into the second guide rail 16 by pulling the rope 44, so as to prepare for the next test.
Referring to fig. 6 and 8, the distance between the first hook 24 near the first pull cord 22 and the first hook 24 far from the first pull cord 22 is equal to 6 meters, and in connection with fig. 5, the distance between the second hook 34 near the second pull cord 32 and the second hook 34 far from the second pull cord 32 is equal to 6 meters. The number of the test frames 1 is two, the two test frames 1 are respectively an outer frame 6 and an inner frame 5, and a first vertical rod 11 and a second vertical rod 12 of the outer frame 6 are both higher than the first vertical rod 11 and the second vertical rod 12 of the inner frame 5. The distance between the first slide 13 and the second slide 14 of the inner frame 5 is equal to 1.8 metres and the distance between the first slide 13 and the second slide 14 of the outer frame 6 is equal to 3 metres.
The implementation principle of the above embodiment is as follows:
in an initial state, the plurality of first steel balls 2 are all positioned at one end, close to the ground, in the first guide rail 15, and the plurality of second steel balls 3 are all positioned at one end, close to the ground, in the second guide rail 16.
When the test is needed, one side of the safety net is uniformly and fixedly connected with each first hook 24, and the other side of the safety net is uniformly and fixedly connected with each second hook 34. And then pulling the first pull rope 22 and the second pull rope 32, pulling the first steel ball 2 into the first slideway 13, pulling the second steel ball 3 into the second slideway 14 until the limiting clamping block 42 is clamped at the corresponding first inlet 132 end or the second inlet 142 end, tightly tying the first pull rope 22 to the first fixing pile 23, and tightly tying the second pull rope 32 to the second fixing pile 33. At this time, the safety net is in a completely flat state, and finally, the test ball is released for testing.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a safety net shock-resistant test device which characterized in that: the test device comprises a test frame (1), wherein the test frame (1) comprises a plurality of first vertical rods (11) and second vertical rods (12) which are arranged along the vertical direction, a first slideway (13) is fixedly connected to the first vertical rods (11), and a second slideway (14) is fixedly connected to the second vertical rods (12);
A first guide rail (15) is arranged between one end of the first slide way (13) in the length direction of the first slide way and the ground, a second guide rail (16) is arranged between one end of the second slide way (14) in the length direction of the second slide way and the ground, and the first guide rail (15) and the second guide rail (16) are both positioned on the same side of the corresponding first slide way (13) or second slide way (14);
the test frame (1) comprises a lifting piece for pulling a safety net between the first slideway (13) and the second slideway (14) through the first guide rail (15) and the second guide rail (16) and a stabilizing piece for fixing a safety net between the first slideway (13) and the second slideway (14), wherein the safety net is completely paved between the first slideway (13) and the second slideway (14);
a hanging bracket (18) is arranged on one side of the test frame (1), and a ball falling part for hanging and releasing the test ball is arranged on the hanging bracket (18);
a first sliding part is arranged on the first guide rail (15) in a sliding manner, and a second sliding part is arranged on the second guide rail (16) in a sliding manner; the fixing piece comprises a first fixing piece and a second fixing piece, wherein the first fixing piece is used for fixing one edge of the safety net on the first sliding piece, and the second fixing piece is used for fixing one edge of the safety net away from the first sliding piece on the second sliding piece; the lifting piece comprises a first pulling rope (22) and a second pulling rope (32), the first pulling rope (22) is used for pulling the first sliding piece to slide onto the first slideway (13) through the first guide rail (15), and the second pulling rope (32) is used for pulling the second sliding piece to slide onto the second slideway (14) through the second guide rail (16); the steady piece further comprises a limiting piece for fixing the first sliding piece on the first slideway (13) and the second sliding piece on the second slideway (14);
The first slide way (13) and the second slide way (14) are both in a circular tube shape, a first sliding opening (131) is formed in the first slide way (13) along the length direction of the first slide way, the cross section of the first slide way (13) is C-shaped, a second sliding opening (141) is formed in the second slide way (14) along the length direction of the second slide way, and the cross section of the second slide way (14) is C-shaped; the two ends of the first slideway (13) in the length direction are open, and the two ends of the second slideway (14) in the length direction are open; a first inlet (132) is formed at one end, close to the first guide rail (15), of the first slide way (13), and a second inlet (142) is formed at one end, close to the second guide rail (16), of the second slide way (14);
the first sliding parts are a plurality of first steel balls (2), the width of the first sliding opening (131) is smaller than the diameter of the first steel balls (2), the second sliding parts are a plurality of second steel balls (3), and the width of the second sliding opening (141) is smaller than the diameter of the second steel balls (3); one end of the first pull rope (22) penetrates through a port of the first slide way (13) far away from the first inlet (132) and is fixedly connected with the first steel ball (2) far away from the first inlet (132), and one end of the second pull rope (32) penetrates through a port of the second slide way (14) far away from the second inlet (142) and is fixedly connected with the second steel ball (3) far away from the second inlet (142); the first steel balls (2) are connected in a chain shape through first connecting pieces, and the second steel balls (3) are connected in a chain shape through second connecting pieces;
The first fixing piece comprises a first hook (24) arranged on the first steel ball (2), one end of the first hook (24) is fixedly connected with the first steel ball (2), and the other end of the first hook (24) is detachably connected with the safety net; the second fixing piece comprises a second hook (34) arranged on the second steel ball (3), one end of the second hook (34) is fixedly connected with the second steel ball (3), and the other end of the second hook (34) is detachably connected with the safety net.
2. The safety net impact resistance test device of claim 1, characterized in that: the first connecting piece is a first iron chain (21), and two ends of the first iron chain (21) are respectively fixedly connected with the corresponding first steel balls (2); the second connecting piece is a second iron chain (31), and two ends of the second iron chain (31) are fixedly connected with the corresponding second steel balls (3) respectively.
3. The safety net impact resistance test device of claim 1, characterized in that: the test frame (1) comprises a first fixing pile (23) and a second fixing pile (33), one end, far away from the first sliding piece, of the first pull rope (22) is detachably connected with the first fixing pile (23), and one end, far away from the second sliding piece, of the second pull rope (32) is detachably connected with the second fixing pile (33).
4. The safety net impact resistance test device of claim 1, characterized in that: the limiting piece comprises two limiting clamping pieces (41) and two limiting clamping blocks (42), and the two limiting clamping pieces (41) respectively cover the port of the first slide way (13) far away from the first inlet (132) and the port of the second slide way (14) far away from the second inlet (142); the limiting clamping piece (41) is provided with a hole for the first pull rope (22) or the second pull rope (32) to pass through, and the size of the hole is smaller than that of the corresponding first steel ball (2) or second steel ball (3); the number of the limiting clamping blocks (42) is two, the two limiting clamping blocks (42) are respectively positioned on the first steel ball (2) far away from the first pull rope (22) and the second steel ball (3) far away from the second pull rope (32), and the limiting clamping blocks (42) are abutted to the end of the first inlet (132) or the end of the second inlet (142).
5. The safety net impact resistance test device of claim 1, characterized in that: the first pull rope (22) is provided with a first stop block (25) used for preventing the first pull rope (22) from completely separating from the first slideway (13), and the second pull rope (32) is provided with a second stop block (35) used for preventing the second pull rope (32) from completely separating from the second slideway (14).
6. The safety net impact resistance test device of claim 1, characterized in that: and a buffer part is arranged on the ground below the test frame (1).
7. The safety net impact resistance test device of claim 1, characterized in that: the ball falling part comprises an electric block (181) and an electromagnetic chuck (182) arranged on the electric block (181).
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| CN113138060B (en) * | 2021-04-30 | 2023-03-28 | 安徽省三方新材料科技有限公司 | Detection device and detection method for impact force of wear-resistant ball for mine |
| CN113607577A (en) * | 2021-08-06 | 2021-11-05 | 广州增城正源建设工程检测中心有限公司 | Safety net impact resistance testing machine |
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| CN201921833U (en) * | 2011-01-20 | 2011-08-10 | 河北普丰建设机械有限公司 | Sand charging device of sand screening machine |
| CN102390388B (en) * | 2011-09-06 | 2013-12-11 | 唐仲彬 | Complete equipment for safe elevation of ore bucket |
| CN203475861U (en) * | 2013-07-22 | 2014-03-12 | 中建钢构有限公司 | Sliding type safety net |
| CN203392688U (en) * | 2013-08-12 | 2014-01-15 | 山东德嘉石油装备有限公司 | Inclined passenger and freight elevator |
| CN203513013U (en) * | 2013-11-04 | 2014-04-02 | 安徽古井贡酒股份有限公司 | Safety device of hydraulic lifting platform |
| CN104966455B (en) * | 2015-06-04 | 2018-02-02 | 河南理工大学 | A kind of prevention of sliding-down in inclined well teaching, training device |
| CN206223577U (en) * | 2016-11-17 | 2017-06-06 | 广东煜祺检测股份有限公司 | A kind of closely-knitted safety net impact property testing machine |
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