CN215448390U - Safety protection net performance test frock - Google Patents
Safety protection net performance test frock Download PDFInfo
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- CN215448390U CN215448390U CN202121721483.6U CN202121721483U CN215448390U CN 215448390 U CN215448390 U CN 215448390U CN 202121721483 U CN202121721483 U CN 202121721483U CN 215448390 U CN215448390 U CN 215448390U
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- lead screw
- portal frame
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- protection net
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Abstract
The invention discloses a safety protection net performance testing tool, which solves the problem of how to conveniently test the performance of a net under impact forces at different heights. The device comprises a portal frame (1) and a tested protective net (9), wherein two lead screw driving motors are respectively arranged on the inner sides of the bottom ends of uprights of the portal frame (1), a left lead screw nut (4) is arranged on a left lead screw (3), a right lead screw nut (7) is arranged on a right lead screw (6), a protective net mounting annular frame (8) is arranged between the left lead screw nut (4) and the right lead screw nut (7), and the protective net (9) is mounted on the protective net mounting annular frame (8); a fixed pulley (22) is arranged in the middle of a top end beam of the portal frame (1), a winding drum (20) and a test rope (21) are arranged at the left end of the top end beam of the portal frame (1), and the other end of the test rope (21) is connected with a test ball (23) after passing through the fixed pulley (22); and the device is suitable for various testing requirements.
Description
Technical Field
The invention relates to a test tool, in particular to a safety protection net performance test tool and a test method.
Background
The safety protection net is a labor protection tool for preventing falling injury, has extremely wide application range, and is mostly used for various high-altitude operations; the potential falling danger of high-altitude operation often occurs in shelves, roofs, windows, suspensions, pits, deep grooves and the like, and the degree of falling injury is related to the falling height; the safety protection net can be divided into a flat net and a vertical net in general, wherein the flat net is used for receiving falling people and objects and preventing the falling people from directly falling to the ground to form a hard road to cause casualty accidents; the vertical net mainly has the functions of intercepting personnel and preventing the personnel from falling due to foot loss; both the two nets need to have certain stress strength and must withstand the impact of certain gravity and acceleration; when testing the performance of the safety protection net, how to install and fix the protection net and conveniently test the performance of the net under different heights of impact force becomes a problem to be solved.
Disclosure of Invention
The invention provides a safety protection net performance testing tool and a safety protection net performance testing method, and solves the technical problem of how to conveniently test the net performance under impact forces of different heights.
The invention solves the technical problems by the following technical scheme:
a safety protection net performance testing tool comprises a portal frame and a tested protection net, wherein a left lead screw driving motor and a right lead screw driving motor are respectively arranged on the inner side of the bottom end of a portal frame upright post, a left lead screw is connected to the left lead screw driving motor and vertically arranged along the vertical direction, a top end bearing of the left lead screw is arranged at the left end of a portal frame top beam, a right lead screw is connected to the right lead screw driving motor and vertically arranged along the vertical direction, a top end bearing of the right lead screw is arranged at the right end of the portal frame top beam, a left lead screw nut is arranged on the left lead screw, a right lead screw nut is arranged on the right lead screw, a protection net mounting annular frame is arranged between the left lead screw nut and the right lead screw nut and is arranged along the horizontal direction, and the protection net is mounted on the protection net mounting annular frame; the middle part of a top end beam of the portal frame is provided with a fixed pulley, the left end of the top end beam of the portal frame is provided with a winding drum, a test rope is wound on the winding drum, and the other end of the test rope is connected with a test ball after passing through the fixed pulley.
A pressure ring is arranged on the protective net mounting annular frame, the outer side end of the protective net is arranged between the protective net mounting annular frame and the pressure ring, and a protective net fixing bolt is connected between the protective net mounting annular frame and the pressure ring; an annular guardrail baffle is arranged on the annular frame for installing the protective net outside the compression ring, and a buffer cushion layer is arranged on the inner side surface of the annular guardrail baffle.
The left supporting blocks are arranged on the left side upright post of the portal frame at intervals, the right supporting blocks are arranged on the right side upright post of the portal frame at intervals, a left telescopic clamp plate driving cylinder is arranged on the lower bottom surface of the left end of the protective net mounting annular frame, a left telescopic clamp plate is connected to the output shaft of the left telescopic clamp plate driving cylinder, and the left telescopic clamp plate and the left supporting blocks are movably overlapped together; the right supporting blocks are arranged on the upright column on the right side of the portal frame at intervals, the right telescopic clamping plate driving air cylinder is arranged on the bottom surface of the right end of the protective net mounting annular frame, the right telescopic clamping plate driving air cylinder is connected to an output shaft of the right telescopic clamping plate driving air cylinder, and the right telescopic clamping plate and the right supporting blocks are movably overlapped together.
A method for testing the performance of a safety protection net by using a safety protection net performance testing tool comprises the following steps:
firstly, mounting a protective net on a protective net mounting annular frame, and connecting and fixing the protective net mounting annular frame and a pressure ring together through a protective net fixing bolt;
secondly, according to the test parameters, the left screw rod nut and the right screw rod nut are lifted to a specified height by controlling the left screw rod driving motor and the right screw rod driving motor to rotate, and the protective net is arranged at the specified height of the test parameters;
thirdly, by controlling the left telescopic clamping plate driving cylinder and the right telescopic clamping plate driving cylinder, the left telescopic clamping plate is lapped on the left supporting block with the corresponding height, and the right telescopic clamping plate is lapped on the right supporting block with the corresponding height, so that the test impact force applied to the protective net mounting annular frame is borne by the portal frame two vertical columns;
selecting a test ball according to the test parameters, suspending the test ball on a fixed pulley through a test rope, and winding and fixing the other end of the test rope on a winding drum;
fifthly, removing a limiting rotating mechanism of the winding drum, enabling the test ball to freely fall and fall on the protective net, after rebounding, intercepting the test ball by the annular guardrail board and the buffer cushion layer, and finally stopping on the protective net;
and sixthly, hoisting the test ball again through the other end of the test rope fixed on the winding drum to prepare for the next test.
The height of the safety net is automatically adjusted by the lifting component of the net rack, the height of the safety net is adjusted and matched with the height of the test ball, various test requirements are met, the labor amount is saved, and the safety net is convenient to assemble and disassemble and convenient to replace.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a safety protection net performance testing tool comprises a portal frame 1 and a tested protection net 9, a left screw rod driving motor 2 and a right screw rod driving motor 5 are respectively arranged on the inner side of the bottom end of a vertical column of the portal frame 1, a left screw rod 3 is connected to the left screw rod driving motor 2, the left screw rod 3 is vertically arranged along the vertical direction, a top end bearing of the left screw rod 3 is arranged at the left end of a top beam of the portal frame 1, a right screw rod 6 is connected to the right screw rod driving motor 5, the right screw rod 6 is vertically arranged along the vertical direction, a top end bearing of the right screw rod 6 is arranged at the right end of the top beam of the portal frame 1, a left screw rod nut 4 is arranged on the left screw rod 3, a right screw rod nut 7 is arranged on the right screw rod 6, a protection net mounting annular frame 8 is arranged between the left screw rod nut 4 and the right screw rod nut 7, the protection net mounting annular frame 8 is arranged along the horizontal direction, a protective net 9 is arranged on the protective net mounting annular frame 8; the middle part of a top end beam of the portal frame 1 is provided with a fixed pulley 22, the left end of the top end beam of the portal frame 1 is provided with a winding drum 20, a test rope 21 is wound on the winding drum 20, and the other end of the test rope 21 is connected with a test ball 23 after passing through the fixed pulley 22.
A pressing ring 10 is arranged on the protective net mounting annular frame 8, the outer side end of the protective net 9 is arranged between the protective net mounting annular frame and the pressing ring 10, and a protective net fixing bolt 11 is connected between the protective net mounting annular frame and the pressing ring 10; an annular guardrail fence 12 is arranged on the protective net mounting annular frame 8 outside the compression ring 10, and a cushion layer 13 is arranged on the inner side surface of the annular guardrail fence 12.
The left supporting blocks 19 are arranged on the left side upright post of the portal frame 1 at intervals, the right supporting blocks 14 are arranged on the right side upright post of the portal frame 1 at intervals, the lower bottom surface of the left end of the protective net mounting annular frame 8 is provided with a left telescopic clamping plate driving cylinder 17, the output shaft of the left telescopic clamping plate driving cylinder 17 is connected with a left telescopic clamping plate 18, and the left telescopic clamping plate 18 and the left supporting blocks 19 are movably overlapped together; right supporting blocks 14 are arranged on right side upright posts of the portal frame 1 at intervals, a right telescopic clamping plate driving cylinder 15 is arranged on the lower bottom surface of the right end of the protective net mounting annular frame 8, a right telescopic clamping plate 16 is connected to an output shaft of the right telescopic clamping plate driving cylinder 15, and the right telescopic clamping plate 16 and the right supporting blocks 14 are movably lapped together; the right supporting block 14 and the left supporting block 19 are correspondingly arranged, and when the two telescopic clamping plates under the protection net installation ring frame 8 are lapped on the correspondingly arranged right supporting block 14 and the left supporting block 19, the protection net installation ring frame 8 is in a horizontal state.
A method for testing the performance of a safety protection net by using a safety protection net performance testing tool comprises the following steps:
firstly, mounting a protective net 9 on a protective net mounting annular frame 8, and connecting and fixing the protective net mounting annular frame 8 and a pressure ring 10 together through a protective net fixing bolt 11;
secondly, controlling the left screw rod driving motor 2 and the right screw rod driving motor 5 to rotate according to the test parameters, lifting the left screw rod nut 4 and the right screw rod nut 7 to a specified height, and arranging the protective net 9 at the height specified by the test parameters;
thirdly, by controlling a left retractable card plate driving cylinder 17 and a right retractable card plate driving cylinder 15, a left retractable card plate 18 is lapped on a left supporting block 19 with a corresponding height, and a right retractable card plate 16 is lapped on a right supporting block 14 with a corresponding height, so that the test impact force applied to the protective net mounting ring frame 8 is borne by two vertical columns of the portal frame 1;
fourthly, selecting a test ball 23 according to the test parameters, suspending the test ball 23 on a fixed pulley 22 through a test rope 21, and winding the other end of the test rope 21 on a winding drum 20 and fixing;
fifthly, the limiting rotating mechanism of the winding drum 20 is released, the test balls 23 fall freely and fall on the protective net 9, after rebounding, the test balls are intercepted by the annular guardrail boards 12 and the buffer cushion layer 13 and finally stay on the protective net 9;
sixth, the test ball 23 is lifted up again by the other end of the test string 21 fixed to the reel 20, and is ready for the next test.
Claims (3)
1. The utility model provides a safety protection net capability test frock, including portal frame (1) and protection network (9) of being tested, be provided with left lead screw driving motor (2) and right lead screw driving motor (5) respectively in portal frame (1) stand bottom inboard, be connected with left lead screw (3) on left lead screw driving motor (2), left lead screw (3), vertical direction from top to bottom, set up perpendicularly, the top bearing setting of left lead screw (3) is at portal frame (1) back timber left end, be connected with right lead screw (6) on right lead screw driving motor (5), right lead screw (6), vertical direction from top to bottom, set up perpendicularly, the top bearing setting of right lead screw (6) is at portal frame (1) back timber right-hand member, a serial communication port, be provided with left lead screw nut (4) on left lead screw (3), be provided with right lead screw nut (7) on right lead screw (6), be provided with protection network installation ring frame (7) between left lead screw nut (4) and right lead screw nut (7), (it is (a) 8) The protective net mounting annular frame (8) is arranged along the horizontal direction, and a protective net (9) is mounted on the protective net mounting annular frame (8); the middle of a top end beam of the portal frame (1) is provided with a fixed pulley (22), the left end of the top end beam of the portal frame (1) is provided with a winding drum (20), a test rope (21) is wound on the winding drum (20), and the other end of the test rope (21) is connected with a test ball (23) after passing through the fixed pulley (22).
2. The safety protection net performance test tool according to claim 1, characterized in that a press ring (10) is arranged on the protection net mounting annular frame (8), the outer side end of the protection net (9) is arranged between the protection net mounting annular frame and the press ring (10), and a protection net fixing bolt (11) is connected between the protection net mounting annular frame and the press ring (10); an annular guardrail board (12) is arranged on the protective net mounting annular frame (8) at the outer side of the compression ring (10), and a buffer cushion layer (13) is arranged on the inner side surface of the annular guardrail board (12).
3. The safety protection net performance testing tool according to claim 2, characterized in that left supporting blocks (19) are arranged on a left side column of a portal frame (1) at intervals, right supporting blocks (14) are arranged on a right side column of the portal frame (1) at intervals, a left telescopic clamp plate driving cylinder (17) is arranged on the lower bottom surface of the left end of a protection net mounting ring frame (8), a left telescopic clamp plate (18) is connected to an output shaft of the left telescopic clamp plate driving cylinder (17), and the left telescopic clamp plate (18) and the left supporting blocks (19) are movably lapped together; the right supporting blocks (14) are arranged on the upright columns on the right side of the portal frame (1) at intervals, a right telescopic clamping plate driving cylinder (15) is arranged on the lower bottom surface of the right end of the protective net mounting ring-shaped frame (8), a right telescopic clamping plate (16) is connected to the output shaft of the right telescopic clamping plate driving cylinder (15), and the right telescopic clamping plate (16) and the right supporting blocks (14) are movably overlapped together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121721483.6U CN215448390U (en) | 2021-07-27 | 2021-07-27 | Safety protection net performance test frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121721483.6U CN215448390U (en) | 2021-07-27 | 2021-07-27 | Safety protection net performance test frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215448390U true CN215448390U (en) | 2022-01-07 |
Family
ID=79684699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121721483.6U Active CN215448390U (en) | 2021-07-27 | 2021-07-27 | Safety protection net performance test frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215448390U (en) |
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2021
- 2021-07-27 CN CN202121721483.6U patent/CN215448390U/en active Active
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