CN113418690B - Static simulation test system and test method for anti-falling device of lifting protection platform - Google Patents
Static simulation test system and test method for anti-falling device of lifting protection platform Download PDFInfo
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- CN113418690B CN113418690B CN202110789150.5A CN202110789150A CN113418690B CN 113418690 B CN113418690 B CN 113418690B CN 202110789150 A CN202110789150 A CN 202110789150A CN 113418690 B CN113418690 B CN 113418690B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The application relates to a static simulation test system and a test method for an anti-falling device of a lifting protection platform, wherein the static simulation test system comprises a support frame, a moving mechanism is arranged on the inner bottom surface of the support frame, a test tool is arranged on the moving mechanism, and the anti-falling device is arranged on the test tool; a lifting oil cylinder is arranged at the top of the upper and lower penetrating support frame, the output end of the lifting oil cylinder faces downwards, a pressure head is arranged at the end part of the lifting oil cylinder, a pressing plate is clamped at the bottom of the pressure head, and the bottom end of the pressing plate is positioned right above the anti-falling device; a pressure sensor is arranged between the pressure head and the output end of the lifting oil cylinder; the pressure head and the pressure plate are driven by the lifting oil cylinder to move downwards and force the anti-falling device on the test tool downwards until the anti-falling device fails, and the bearing capacity is obtained through the pressure sensor, so that the static load simulation test of the anti-falling device is realized, the anti-falling device is suitable for independent test of a single anti-falling device, the test is convenient, the reliability is good, and the test cost are low.
Description
Technical Field
The application relates to the technical field of safety protection platforms for lifting operation, in particular to a static simulation test system and a test method for an anti-falling device of a lifting protection platform.
Background
The attached lifting operation safety protection platform (short for protection platform) for building construction is a steel structure frame assembled on the ground, is connected to a wall-attached support, and is lifted by an electric hoist in a circulating way, so that the safety protection platform is lifted along with the lifting of a building. The protection platform mainly comprises a frame body, a wall-attached support, a lifting mechanism, an anti-falling device and a control system which are used together in a stepping manner, wherein the protection platform surrounds the whole building, the height of the protection platform can reach 5 floors, the span of the protection platform can reach 7 meters at maximum, the width of the protection platform can reach 1.2 meters at maximum, and the whole building can be lifted together by dozens of machine positions during lifting. In order to prevent the protection platform from falling in the lifting process, the anti-falling device is the last anti-falling line for guaranteeing safety, and the reliability of the anti-falling device is particularly important.
Once the protection platform is installed on a building, the protection platform rises along with rising of the building, and surrounds the building for a circle, the protection platform is huge in size and weight, and the protection platform is dangerous and can damage the building, so that in the prior art, the protection platform is used for carrying out the protection test on a sample rack of a manufacturing unit, and the existing test mode is as follows: lifting for 30cm, then descending for 15cm, starting the unhooking device, and carrying out an anti-falling test, wherein the frame body is empty when the anti-falling test is carried out, and all anti-falling devices are tested together. The anti-falling device is divided into a lattice type and a friction type, wherein the lattice type is divided into a swinging block type, a rotating wheel type and a top supporting type.
The existing test method has the following defects:
(1) The test requires a dedicated test stand. Because the test is carried out on the sample rack, at least one test sample rack which is about 3 layers and is tens of meters long is required to be built for the test anti-falling, the cost is hundreds of thousands, the period is long, and the occupied space is occupied.
(2) Each fall arrest device cannot be truly checked. Because the whole frame body descends together to check all the anti-falling devices together, the falling is easy to be asynchronous due to the fact that the frame body is not horizontal, friction of each frame body and the like, the anti-falling devices are stressed unevenly due to inconsistent actions of each unhooking device, different issuing moments of each anti-falling device and the like, and the anti-falling device capability cannot be checked truly.
(3) The limit capacity test of the fall arrest device cannot be performed. The sample overhead load test is adopted, and the test is carried out from a static state, so that the actual anti-falling capability cannot be reflected.
(4) The test is time-consuming and laborious. The sample rack test firstly needs lifting of a rack body, leveling, tripping, hoist guide chains and the like of the rack body, and is time-consuming and labor-consuming.
(5) Damage to the test specimen rack. Each time the sample frame falls, the sample frame is damaged due to the fact that the sample frame is impacted once under an abnormal working condition, and the sample frame is not easy to carry out for many times.
(6) The factory test of the falling protector is inconvenient. The falling protector is used as a product, is produced in batches, needs to be sampled every batch, and is obviously unrealistic to test on a test sample rack.
(7) No limit destructive test can be performed. The no-load test is carried out on the existing sample frame, the test load is smaller and is far smaller than the theoretical design load of the falling protector, the limit breaking capacity is required to be loaded according to the limit value of the theoretical design load, and the no-load test cannot be realized on the sample frame.
Disclosure of Invention
The application provides a static simulation test system and a test method for an anti-falling device of a lifting protection platform, which aim at the defects in the prior art, so that the static load simulation test of the anti-falling device is realized, the static load simulation test system is suitable for independent tests of single anti-falling devices, and the static load simulation test system is convenient to test and has good reliability and practicability.
The technical scheme adopted by the application is as follows:
the static simulation test system for the anti-falling device of the lifting protection platform comprises a supporting frame, wherein a moving mechanism is arranged on the inner bottom surface of the supporting frame, a test tool is arranged on the moving mechanism, and the anti-falling device is arranged on the test tool; a lifting oil cylinder is arranged at the top of the upper and lower penetrating support frame, the output end of the lifting oil cylinder faces downwards, a pressure head is arranged at the end part of the lifting oil cylinder, a pressing plate is clamped at the bottom of the pressure head, and the bottom end of the pressing plate is positioned right above the anti-falling device; and a pressure sensor is arranged between the pressure head and the output end of the lifting oil cylinder.
As a further improvement of the above technical scheme:
the structure of the test fixture is as follows: the vertical beam and the diagonal bracing are arranged on the supporting seat at intervals left and right, a cross beam is commonly arranged between the upper part of the vertical beam and the top of the diagonal bracing, a movable roller is rotatably arranged at the end part of the cross beam, which is close to the diagonal bracing, and the downward bottom end of the pressing plate downwards applies force to the movable roller, so that the movable roller rotates in a vertical plane; a braking block is rotatably arranged on a cross beam beside the movable roller, and the rotating movable roller applies force to the braking block to enable the braking block to swing; and a baffle plate for preventing the brake block from swinging.
The movable roller is of a five-star structure, one side of the movable roller is pressed downwards by the pressing plate, and the other side of the movable roller is applied to the brake block upwards.
The brake block is an eccentric block and is driven by the movable roller to deflect upwards; a baffle is arranged on the cross beam positioned at the oblique upper position of the brake block, and the baffle blocks the deflection of the brake block.
And a guide mechanism is further arranged between the output end of the lifting oil cylinder and the supporting frame, and a lifting limiting mechanism is arranged between the guide mechanism and the top of the supporting frame.
The structure of the supporting frame is as follows: comprises a top plate and a base which are arranged at intervals up and down, wherein upright posts are fixedly arranged at four corners between the top plate and the base;
the guide mechanism has the structure that: the guide rods penetrate through the top plate from top to bottom, and horizontal plates are mounted at the bottom ends of the guide rods together; the output end of the lifting oil cylinder downwards penetrates through the horizontal plate and is fixedly installed, and a lifting limiting mechanism is installed between the horizontal plate and the top plate.
The lifting limiting mechanism has the structure that: the device comprises a displacement guide rod fixedly arranged on a horizontal plate through a fastener, wherein the displacement guide rod extends upwards into a top plate, a proximity switch is arranged on the top plate, an upper limit collision head is arranged on the displacement guide rod above the proximity switch, and a lower limit collision head is arranged on the displacement guide rod below the proximity switch; and the bottom surface of the top plate is also provided with a displacement sensor, and the induction end of the displacement sensor is right opposite to the lower limit collision head.
The structure of the moving mechanism is as follows: the device comprises a bracket fixedly arranged on the rear side surface of the bottom of a supporting frame, wherein a traversing oil cylinder is arranged on the bracket, the output end of the traversing oil cylinder faces forwards, a sliding table is arranged at the end part of the traversing oil cylinder, and T-shaped grooves which are arranged at intervals from front to back are formed in the sliding table; a sliding rail is also arranged between the sliding table and the bottom of the supporting frame; a limit seat is also arranged on the bottom surface of the support frame positioned outside the side surface of the sliding table along the sliding direction of the sliding rail, limit switches are arranged at the front end and the rear end of the limit seat, and rotating wheels are arranged on the inner side surfaces of the limit switches; the sliding table side is provided with a travel collision head, and the travel collision head is positioned between the two limit switches.
Still including controlling the platform, control the platform and arrange in the braced frame outside, control the structure of platform and be: the device comprises a support, wherein an operation table is arranged on the support, a display screen is embedded in the middle of the upper part of the operation table, and a plurality of buttons are arranged on the operation table below the display screen and on two sides of the display screen at intervals; the display screen and the buttons are respectively and electrically connected with the control system, the moving mechanism and the lifting oil cylinder, and the corresponding buttons are used for controlling the moving mechanism and the lifting oil cylinder to act.
A test method of a static simulation test system of an anti-falling device of a lifting protection platform comprises the following steps:
according to the test requirement, one or two of a movable roller and a brake block are arranged on a test tool;
the moving mechanism tool drives the test tool to move to the position right below the lifting oil cylinder;
the lifting oil cylinder works to drive the pressure head and the pressure plate to move downwards, so that the bottom end of the pressure plate approaches to and downwards applies force to the movable roller, the movable roller rotates relative to the cross beam, and the movable roller pushes the brake block to swing until the brake block approaches to and clings to the baffle plate;
the lifting oil cylinder continues to work, the pressure head and the pressing plate continue to apply downward force to the movable roller, and the pressure sensor monitors the force transmitted by the pressure head in real time;
until one of the movable roller, the brake block or the baffle fails, the lifting cylinder stops working, so that the maximum force before failure is obtained through the pressure sensor.
The beneficial effects of the application are as follows:
the application has compact and reasonable structure and convenient operation, drives the pressure head and the pressure plate to move downwards and apply force to the anti-falling device on the test tool downwards through the lifting oil cylinder until the anti-falling device fails, and obtains the bearing capacity through the pressure sensor, thereby realizing the static load simulation test of the anti-falling device, being particularly suitable for the independent test of a single anti-falling device, having convenient and reliable test and low test cost and cost, greatly helping the reliable and effective test of the anti-falling device and helping to ensure the safety and reliability of the protection platform;
the application also has the following advantages:
the static simulation test system can be installed in a laboratory or arranged at the tail end of a production line of a production workshop for use, is convenient for static test of anti-falling devices with various forms of requirements, and is convenient and reliable to operate; the static stress intensity test device is particularly suitable for carrying out a static stress intensity test on a certain component in the anti-falling device.
Drawings
Fig. 1 is a schematic structural view of the present application.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a partial enlarged view at B in fig. 1.
Fig. 4 is a partial enlarged view at C in fig. 1.
Fig. 5 is a schematic structural view of the moving mechanism of the present application.
Fig. 6 is a schematic structural view (another view) of the moving mechanism of the present application.
Fig. 7 is a schematic structural diagram of the control platform of the present application.
Wherein: 1. a support frame; 2. a lifting limiting mechanism; 3. a lifting oil cylinder; 4. a guide mechanism; 5. a pressure sensor; 6. a pressure head; 7. a pressing plate; 8. testing a tool; 9. a moving mechanism; 10. a hydraulic station; 20. a control platform;
11. a base; 12. a column; 13. a top plate;
21. a displacement guide rod; 22. an upper limit ram; 23. a proximity switch; 24. a displacement sensor; 25. a lower limit ram; 26. a fastener;
41. a guide rod; 42. a horizontal plate;
61. a through hole; 62. a clamping groove;
81. a support base; 82. an anchor bolt; 83. diagonal bracing; 84. a movable roller; 85. a brake block; 86. a baffle; 87. a cross beam; 88. a vertical beam;
91. a bracket; 92. a traversing oil cylinder; 93. a sliding table; 94. a T-shaped groove; 95. a slide rail; 96. stroke collision; 97. a limit seat; 98. a limit switch; 99. a rotating wheel;
201. a support; 202. an operation table; 203. a button; 204. and a display screen.
Detailed Description
The following describes specific embodiments of the present application with reference to the drawings.
As shown in fig. 1, the static simulation test system of the falling protection device of the lifting protection platform of the embodiment comprises a support frame 1, wherein a moving mechanism 9 is arranged on the inner bottom surface of the support frame 1, a test tool 8 is arranged on the moving mechanism 9, and a falling protection device is arranged on the test tool 8; a lifting oil cylinder 3 is arranged at the top of the upper and lower penetrating support frame 1, the output end of the lifting oil cylinder 3 faces downwards, a pressure head 6 is arranged at the end part of the lifting oil cylinder, a pressure plate 7 is clamped at the bottom of the pressure head 6, and the bottom end of the pressure plate 7 is positioned right above the anti-falling device; a pressure sensor 5 is arranged between the pressure head 6 and the output end of the lifting oil cylinder 3, and the pressure loaded by the pressure head 6 is detected in real time through the pressure sensor 5.
The pressure head 6 and the pressure plate 7 are driven to move downwards through the lifting oil cylinder 3 and force is applied to the anti-falling device on the test tool 8 downwards until the anti-falling device fails, and the bearing capacity is obtained through the pressure sensor 5, so that the static load simulation test of the anti-falling device is realized, and the anti-falling device is particularly suitable for independent tests of single anti-falling devices.
As shown in fig. 2, the structure of the test fixture 8 is: the device comprises a supporting seat 81, wherein vertical beams 88 and inclined struts 83 are arranged on the supporting seat 81 at left and right intervals, a cross beam 87 is arranged between the upper parts of the vertical beams 88 and the top of the inclined struts 83, a movable roller 84 is rotatably arranged at the end part of the cross beam 87, which is close to the inclined struts 83, and the downward bottom end of a pressing plate 7 downwards applies force to the movable roller 84, so that the movable roller 84 rotates in a vertical plane; a braking block 85 is rotatably arranged on a cross beam 87 beside the movable roller 84, and the movable roller 84 which rotates applies force to the braking block 85 to swing; a shutter 86 is also included to prevent the brake pad 85 from rocking.
The supporting seat 81, the cross beam 87 and the inclined strut 83 can be of rectangular pipe structures, the inclined strut 83 is inclined outwards towards the direction deviating from the vertical beam 88, and the inclined strut 83 is used for supporting and stabilizing the test fixture 8, in particular the stabilizing function of the system in the test.
The movable roller 84 and the brake block 85 are respectively rotatably mounted on the side surface of the cross beam 87 through pin shafts.
The movable roller 84 has a five-star structure, one side of the movable roller 84 is pressed downwards by the pressing plate 7, and the other side is applied upwards to the brake block 85.
The brake block 85 is an eccentric block, and the brake block 85 is driven by the movable roller 84 to deflect upwards; a stopper 86 is mounted on a cross member 87 positioned obliquely above the stopper 85, and the stopper 86 blocks the deflection of the stopper 85.
The support base 81 is mounted on the moving mechanism 9 by anchor bolts 82.
A guide mechanism 4 is also arranged between the output end of the lifting oil cylinder 3 and the supporting frame 1, and a lifting limiting mechanism 2 is arranged between the guide mechanism 4 and the top of the supporting frame 1.
The structure of the support frame 1 is as follows: the device comprises a top plate 13 and a base 11 which are arranged at intervals up and down, wherein upright posts 12 are fixedly arranged at four corners between the top plate 13 and the base 11;
the guide mechanism 4 has the structure that: the guide rods 41 penetrate through the top plate 13 up and down, and horizontal plates 42 are commonly arranged at the bottom ends of the guide rods 41; the output end of the lifting oil cylinder 3 downwards penetrates through the horizontal plate 42 and is fixedly installed, and the lifting limiting mechanism 2 is installed between the horizontal plate 42 and the top plate 13.
The guide bar 41 may be a hollow cylindrical long bar that plays a guiding role in the process that the horizontal plate 42 moves up and down with the output end of the lift cylinder 3, and the hollow interior of the guide bar 41 may also be used for routing.
As shown in fig. 3, the lifting and lowering limiting mechanism 2 has the following structure: the device comprises a displacement guide rod 21 fixedly arranged on a horizontal plate 42 through a fastener 26, wherein the displacement guide rod 21 extends upwards into a top plate 13, a proximity switch 23 is arranged on the top plate 13, an upper limit ram 22 is arranged on the displacement guide rod 21 above the proximity switch 23, and a lower limit ram 25 is arranged on the displacement guide rod 21 below the proximity switch 23; the bottom surface of the top plate 13 is also provided with a displacement sensor 24, and the sensing end of the displacement sensor 24 is opposite to the lower limit ram 25.
In the process that the output end of the lifting oil cylinder 3 drives the pressure head 6 to move up and down, the displacement guide rod 21 and the horizontal plate 42 move up and down along with the displacement guide rod, the upper limit collision head 22 or the lower limit collision head 25 are close to the proximity switch 23, and the proximity switch 23 senses the displacement guide rod or the lower limit collision head and feeds back the displacement guide rod or the lower limit collision head to the control system in time so that the lifting oil cylinder 3 stops further continuous action to play a role in protecting the whole system; in addition, in the moving process of the displacement guide rod 21, the displacement sensor 24 acquires the displacement in real time and converts the displacement into the displacement of the pressure head 6 through the control system, so that the real-time monitoring of the moving displacement of the pressure head 6 in the test process is realized, and the actual position of the pressure head is acquired.
The upper limit ram 22 and the lower limit ram 25 are both roller structures, avoiding hard collisions with the proximity switch 23.
The top of the pressure head 6 is in threaded connection with the pressure sensor 5, as shown in fig. 4, a clamping groove 62 is formed in the middle of the bottom end of the pressure head 6, an axial horizontal through hole 61 is formed in the bottom end of the pressure head 6, and the through hole 61 is communicated with the clamping groove 62; the top end of the pressing plate 7 extends upwards into the clamping groove 62, and an external bolt horizontally penetrates through the through hole 61 and the pressing plate 7, so that the pressing head 6 and the pressing plate 7 are fastened; and the connection mode of the clamping groove 62 and the bolt also ensures that the pressing plate 7 below the pressing head 6 is convenient to replace and maintain and is convenient to operate.
As shown in fig. 5 and 6, the moving mechanism 9 has a structure in which: the device comprises a bracket 91 fixedly arranged on the rear side surface of the bottom of a supporting frame 1, wherein the bracket 91 is of a triangle welding structure, a traversing oil cylinder 92 is arranged on the bracket 91, the output end of the traversing oil cylinder 92 faces forward, a sliding table 93 is arranged at the end part of the traversing oil cylinder, and T-shaped grooves 94 which are arranged at intervals from front to back are formed in the sliding table 93; a sliding rail 95 is also arranged between the sliding table 93 and the base 11 at the bottom of the supporting frame 1; a limit seat 97 is also arranged on the bottom surface of the support frame 1 positioned outside the side surface of the sliding table 93 along the sliding direction of the sliding rail 95, limit switches 98 are arranged at the front end and the rear end of the limit seat 97, and rotating wheels 99 are arranged on the inner side surfaces of the limit switches 98; the sliding table 93 is provided with a travel ram 96 on the side face, and the travel ram 96 is positioned between two limit switches 98.
T type groove 94 is for seting up the T type deep groove on slip table 93, is convenient for install the supporting seat 81 of experimental frock 8 through rag bolt 82 to realize the fixed mounting of experimental frock 8 on the slip table 93.
When the travel ram 96 contacts the wheel 99 of either of the two limit switches 98, information is fed back to the control system by the limit switch 98 so that the slide table 93 stops further continuous movement.
A backing plate is also arranged between the slide rail 95 and the base 11, and is a rectangular thin plate, so that the transition connection effect is realized.
Still including controlling the platform 20, control the platform 20 and arrange in the braced frame 1 outside, as shown in fig. 7, control the structure of platform 20 and be: the device comprises a support 201, wherein an operation table 202 is arranged on the support 201, a display screen 204 is embedded in the middle of the upper part of the operation table 202, and a plurality of buttons 203 are arranged on the operation table 202 below the display screen 204 and on two sides at intervals; the display screen 204 and the button 203 are respectively and electrically connected with the control system, the moving mechanism 9 and the lifting oil cylinder 3, the corresponding button 203 is used for controlling the moving mechanism 9 and the lifting oil cylinder 3 to act, and the button 203 is used for controlling the whole simulation test system to be started, stopped, suddenly stopped, alarmed and the like.
A hydraulic station 10 for providing hydraulic oil for the lifting cylinder 3 and the traversing cylinder 92 is also arranged, and the hydraulic station 10 is electrically connected with the control system.
The test method of the static simulation test system of the anti-falling device of the lifting protection platform comprises the following steps:
according to the test requirement, one or two of a movable roller 84 and a brake block 85 are arranged on the test tool 8;
the moving mechanism 9 drives the test tool 8 to move to the position right below the lifting cylinder 3, so that the bottom end of the pressing plate 7 faces the outer side of the movable roller 84;
the lifting oil cylinder 3 works to drive the pressure head 6 and the pressure plate 7 to move downwards, so that the bottom end of the pressure plate 7 approaches and downwards applies force to the movable roller 84, the movable roller 84 rotates relative to the cross beam 87, and the movable roller 84 pushes the brake block 85 to swing upwards until the brake block 85 approaches and clings to the baffle 86;
the lifting oil cylinder 3 continues to work, the pressure head 6 and the pressure plate 7 continue to downwards apply force to the movable roller 84, the movable roller 84 transmits force to the brake block 85, the brake block 85 transmits force to the baffle 86, and the pressure sensor 5 monitors the force transmitted by the pressure head 6 in real time;
until one of the movable roller 84, the brake block 85 or the shutter 86 fails, the lift cylinder 3 stops working, so that the maximum force before failure is obtained by the pressure sensor 5.
The static simulation test system can be installed in a laboratory or arranged at the tail end of a production line of a production workshop for use, is convenient for static test of anti-falling devices with various forms of requirements, and is convenient and reliable to operate; the static stress intensity test device is particularly suitable for carrying out a static stress intensity test on a certain component in the anti-falling device.
Embodiment one:
the movable roller 84 is a rotating wheel in the rotating wheel type anti-falling device; in the static simulation test, a brake block 85 and a baffle plate 86 are selected, and the static bearing capacity of the movable roller 84 is obtained through the pressure sensor 5 when the lifting oil cylinder 3 drives the pressure head 6 to move downwards and downwards to apply force to the movable roller 84 through the pressure plate 7.
Embodiment two:
the movable roller 84 and the brake block 85 are components in the anti-falling device; in the static simulation test, the baffle 86 is selected, and the static bearing capacity of the baffle is obtained through the pressure sensor 5 by the failure of the movable roller 84 or the brake block 85 in the process that the lifting oil cylinder 3 drives the pressure head 6 to move downwards and downwards applies force to the movable roller 84 through the pressure plate 7.
Failure in this embodiment includes the occurrence of deformation, cracking, breaking, etc. of the force or force transmitting member.
The application has the advantages of convenient and reliable test and low cost and expense, greatly assists in the reliable and effective test of the anti-falling device, and helps in ensuring the safety and reliability of the protection platform.
The above description is intended to illustrate the application and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the application.
Claims (7)
1. A static simulation test system of an anti-falling device of a lifting protection platform is characterized in that: the anti-falling device comprises a supporting frame (1), wherein a moving mechanism (9) is arranged on the inner bottom surface of the supporting frame (1), a test tool (8) is arranged on the moving mechanism (9), and an anti-falling device is arranged on the test tool (8); a lifting oil cylinder (3) is arranged at the top of the upper and lower penetrating support frame (1), the output end of the lifting oil cylinder (3) faces downwards, a pressure head (6) is arranged at the end part of the lifting oil cylinder, a pressing plate (7) is clamped at the bottom of the pressure head (6), and the bottom end of the pressing plate (7) is positioned right above the anti-falling device; a pressure sensor (5) is arranged between the pressure head (6) and the output end of the lifting oil cylinder (3);
the structure of the test tool (8) is as follows: the vertical beam type hydraulic lifting device comprises a supporting seat (81), wherein vertical beams (88) and inclined struts (83) are arranged on the supporting seat (81) at left and right intervals, a cross beam (87) is jointly arranged between the upper parts of the vertical beams (88) and the tops of the inclined struts (83), a movable roller (84) is rotatably arranged at the end part, close to the inclined struts (83), of the cross beam (87), and the downward bottom end of a pressing plate (7) downwards applies force to the movable roller (84) so that the movable roller (84) rotates in a vertical plane; a braking block (85) is rotatably arranged on a cross beam (87) beside the movable roller (84), and the rotating movable roller (84) applies force to the braking block (85) to swing; the device also comprises a baffle plate (86) for preventing the brake block (85) from swinging;
the movable roller (84) is of a five-star structure, one side of the movable roller (84) is pressed downwards by the pressing plate (7), and the other side of the movable roller is applied upwards to the brake block (85);
the brake block (85) is an eccentric block, and the brake block (85) is driven by the movable roller (84) to deflect upwards; a baffle plate (86) is arranged on a cross beam (87) positioned at the obliquely upper position of the brake block (85), and the baffle plate (86) blocks the deflection of the brake block (85).
2. The lift protection platform fall arrest device static simulation test system of claim 1, wherein: a guide mechanism (4) is further arranged between the output end of the lifting oil cylinder (3) and the supporting frame (1), and a lifting limiting mechanism (2) is arranged between the guide mechanism (4) and the top of the supporting frame (1).
3. The lift protection platform fall arrest device static simulation test system of claim 2, wherein: the structure of the supporting frame (1) is as follows: comprises a top plate (13) and a base (11) which are arranged at intervals up and down, wherein upright posts (12) are fixedly arranged at four corners between the top plate (13) and the base (11);
the guide mechanism (4) has the structure that: the device comprises a plurality of guide rods (41) penetrating through a top plate (13) from top to bottom, and horizontal plates (42) are commonly arranged at the bottom ends of the guide rods (41); the output end of the lifting oil cylinder (3) downwards penetrates through the horizontal plate (42) and is fixedly installed, and a lifting limiting mechanism (2) is installed between the horizontal plate (42) and the top plate (13).
4. The lift protection platform fall arrest device static simulation test system according to claim 3, wherein: the lifting limiting mechanism (2) has the structure that: the device comprises a displacement guide rod (21) fixedly arranged on a horizontal plate (42) through a fastener (26), wherein the displacement guide rod (21) extends upwards into a top plate (13), a proximity switch (23) is arranged on the top plate (13), an upper limit collision head (22) is arranged on the displacement guide rod (21) above the proximity switch (23), and a lower limit collision head (25) is arranged on the displacement guide rod (21) below the proximity switch (23); the bottom surface of the top plate (13) is also provided with a displacement sensor (24), and the induction end of the displacement sensor (24) is opposite to the lower limit collision head (25).
5. The lift protection platform fall arrest device static simulation test system of claim 1, wherein: the structure of the moving mechanism (9) is as follows: the device comprises a bracket (91) fixedly arranged on the rear side surface of the bottom of a supporting frame (1), wherein a transverse moving oil cylinder (92) is arranged on the bracket (91), the output end of the transverse moving oil cylinder (92) faces forward, a sliding table (93) is arranged at the end part of the transverse moving oil cylinder, and T-shaped grooves (94) which are arranged at intervals from front to back are formed in the sliding table (93); a sliding rail (95) is also arranged between the sliding table (93) and the bottom of the supporting frame (1); a limit seat (97) is also arranged on the bottom surface of the support frame (1) positioned outside the side surface of the sliding table (93) along the sliding direction of the sliding rail (95), limit switches (98) are respectively arranged at the front end and the rear end of the limit seat (97), and rotating wheels (99) are respectively arranged on the inner side surfaces of the limit switches (98); the sliding table (93) is provided with a travel ram (96) on the side face, and the travel ram (96) is positioned between two limit switches (98).
6. The lift protection platform fall arrest device static simulation test system of claim 1, wherein: still including controlling platform (20), control platform (20) and arrange in braced frame (1) outside, control the structure of platform (20) and be: the device comprises a support (201), wherein an operation table (202) is arranged on the support (201), a display screen (204) is embedded in the middle of the upper part of the operation table (202), and a plurality of buttons (203) are arranged on the operation table (202) below the display screen (204) and on two sides at intervals; the display screen (204) and the buttons (203) are respectively and electrically connected with the control system, the moving mechanism (9) and the lifting oil cylinder (3), and the corresponding buttons (203) control the moving mechanism (9) and the lifting oil cylinder (3) to act.
7. A test method of a static simulation test system of a falling protection device of a lifting protection platform, which is characterized by comprising the following steps: the method comprises the following steps:
according to the test requirement, one or two of a movable roller (84) and a brake block (85) are arranged on a test tool (8);
the moving mechanism (9) is used for driving the test tool (8) to move to the position right below the lifting oil cylinder (3);
the lifting oil cylinder (3) works to drive the pressure head (6) and the pressure plate (7) to move downwards, so that the bottom end of the pressure plate (7) approaches and downwards applies force to the movable roller (84), the movable roller (84) rotates relative to the cross beam (87), and the movable roller (84) pushes the brake block (85) to swing until the brake block (85) approaches and clings to the baffle (86);
the lifting oil cylinder (3) continues to work, the pressure head (6) and the pressing plate (7) continue to downwards apply force to the movable roller (84), and the pressure sensor (5) monitors the force transmitted by the pressure head (6) in real time;
until one of the movable roller (84), the brake block (85) or the baffle plate (86) fails, the lifting cylinder (3) stops working, so that the maximum force before failure is obtained through the pressure sensor (5).
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