Tackle platform multistage brake and arresting system
阅读说明：本技术 一种滑车台多级刹车及拦阻系统 (Tackle platform multistage brake and arresting system ) 是由 王彬文 张宇 白春玉 牟让科 郭军 曹乐 于 2020-07-31 设计创作，主要内容包括：本申请属于抗冲击性能测试技术领域,特别涉及一种滑车台多级刹车及拦阻系统,包括：两根水平滑轨；滑车台装置,滑动设置在两根滑轨上；推进装置,设置在两根滑轨的一端端部,为滑车台装置提供推力；刹车装置,包括多级刹车组件,且沿滑轨长度方向均匀间隔分布,用于在滑车台装置滑动到对应位置处时对滑车台装置进行多级刹车减速；拦阻装置,设置在两根滑轨的另一端端部,用于对滑车台装置进行拦阻。本申请的滑车台多级刹车及拦阻系统,通过设计滑车台多级刹车系统和滑车台拦阻系统,保证大吨位高速结构能在拦阻系统末端速度减小为零,有效应用于滑车台高速冲击试验、大吨位高速结构缓冲减速设计等领域。(The application belongs to the technical field of shock resistance test, in particular to tackle multistage brake and arresting system, include: two horizontal sliding rails; the pulley table device is arranged on the two slide rails in a sliding manner; the propelling device is arranged at one end part of each of the two sliding rails and provides thrust for the pulley block device; the brake device comprises a multi-stage brake assembly, is uniformly distributed at intervals along the length direction of the slide rail and is used for carrying out multi-stage brake deceleration on the pulley table device when the pulley table device slides to a corresponding position; and the blocking device is arranged at the end parts of the other ends of the two slide rails and is used for blocking the pulley block device. The tackle platform multistage brake and arresting system guarantees that the speed of a large-tonnage high-speed structure can be reduced to zero at the tail end of the arresting system through designing the tackle platform multistage brake system and the tackle platform arresting system, and is effectively applied to the fields of tackle platform high-speed impact tests, large-tonnage high-speed structure buffering and speed reduction designs and the like.)
1. The utility model provides a coaster platform multistage brake and arresting system which characterized in that includes:
two slide rails (5) which are fixedly arranged along the horizontal direction and are parallel to each other;
the trolley platform device is arranged on the two slide rails (5) and can slide on the two slide rails (5) in a reciprocating manner along the horizontal direction;
the propulsion device (1) is arranged at one end part of the two slide rails (5), and is configured to provide thrust for the trolley table device at one end part position so as to drive the trolley table device to slide;
the brake device comprises multistage brake components with the same structure, the multistage brake components are positioned between the end parts of the two ends of the two slide rails (5) in the length direction and are uniformly distributed at intervals along the length direction, and the multistage brake components are used for carrying out multistage brake deceleration on the sliding platform device when the sliding platform device slides to the corresponding position;
the arresting device is arranged at the end part of one end of each of the two sliding rails (5) far away from the propelling device (1) and used for arresting the sliding platform device after braking and deceleration through the brake device.
2. A tackle multi-stage braking and arresting system according to claim 1, wherein the tackle device comprises a tackle (2) in a frame structure, and a sliding shoe adapted to the two sliding rails (5) is arranged at the bottom of the tackle (2) and is slidably arranged on the two sliding rails (5) through the sliding shoe.
3. The trolley station multistage braking and arresting system of claim 2 wherein the trolley station apparatus further comprises:
two pulley table outer cylinders (3) are symmetrically arranged on the left side and the right side of the pulley table (2) along the length direction of the two slide rails (5);
the two trolley table outer cylinders (3) are matched with the propelling device (1), and the propelling device (1) is a gas propelling device so as to push the two trolley table outer cylinders (3) to drive the whole trolley table device to move.
4. The trolley station multistage braking and arresting system of claim 2 wherein the trolley station apparatus further comprises:
the buffer brake strip (4), the buffer brake strip (4) is fixedly arranged at a preset position on the sliding platform (2);
wherein, buffering brake strip (4) through with brake equipment's multistage brake subassembly friction carries out the brake.
5. The multi-stage trolley platform braking and arresting system according to claim 4, wherein two buffering brake strips (4) are symmetrically arranged up and down at a position of the trolley platform (2) close to one of the slide rails (5);
two buffer brake strips (4) are symmetrically arranged at the position, close to the other sliding rail (5), of the sliding platform (2) from top to bottom;
and the two buffering brake bars (4) close to one of the slide rails (5) and the two buffering brake bars (4) close to the other slide rail (5) are distributed in bilateral symmetry.
6. The tackle multistage braking and arresting system of claim 5, wherein the braking device further comprises:
the buffer platform (6) is arranged along the direction parallel to the two slide rails (5) and is positioned on the inner sides of the two slide rails (5);
and the multistage brake assemblies are uniformly distributed at intervals along the length directions of the two sliding rails (5) on the buffer platform (6).
7. The tackle multi-stage braking and arresting system according to claim 6, wherein each stage of the brake assembly comprises:
the brake actuating cylinders (7) are arranged in the vertical direction, the brake actuating cylinders (7) are distributed between the two sliding rails (5) in a half-to-half and bilateral symmetry mode and are fixedly arranged on the buffer platform (6) through a brake cylinder upper supporting seat (20), and in addition, each brake actuating cylinder (7) is connected with a brake cylinder piston (16) in a matching mode;
a plurality of rigid brake pads (18), each rigid brake pad (18) being fixedly disposed at the bottom of one of the brake cylinder pistons (16);
the first fixed brake strips (21) are fixedly arranged at the bottom of one rigid brake pressing block (18) along the direction parallel to the length direction of the two sliding rails (5);
the two rigid brake cushion blocks (19) are fixedly arranged on the buffer platform (6) and symmetrically distributed along the left side and the right side of the length direction of the sliding rail (5), and each rigid brake cushion block (19) is arranged at the vertical bottom of the first fixed brake strips (21) on the corresponding side;
the two second fixed brake strips (22), each second fixed brake strip (22) is fixedly arranged at the top of one rigid brake pad block (19) along the direction parallel to the corresponding side of the first fixed brake strip (21), wherein a gap with a preset size is formed between the bottom of the first fixed brake strips (21) and the top of the second fixed brake strips (22) on the same side, so that when the trolley device slides, the trolley device is allowed to pass through the two buffer brake strips (4) at the upper and lower positions of the trolley (2) and the corresponding side, and the first fixed brake strips (21) and the second fixed brake strips (22) can respectively rub the upper and lower buffer brake strips (4);
and the inflation gas tank (13) is connected with a brake actuating cylinder (7) in the brake assembly through an inflation valve (14).
8. A tackle multiple braking and arresting system according to claim 7, wherein the braking assembly in the braking device comprises three stages, a first stage braking assembly (8), a second stage braking assembly (9) and a third stage braking assembly (10), respectively;
the number of the brake actuating cylinder (7), the brake cylinder piston (16), the rigid brake pressing block (18) and the first fixed brake strip (21) in each stage of the brake assembly is 8, wherein 4 of the brake actuating cylinder, the brake cylinder piston, the rigid brake pressing block and the first fixed brake strip form a group and are close to one of the slide rails (5), and the other 4 of the brake actuating cylinder, the brake cylinder piston, the rigid brake pressing block and the first fixed brake strip form a group and are close to the;
gas pitcher (13) are aerifyd to tertiary brake subassembly sharing, aerify gas pitcher (13) and actuate cylinder (7) through 3 pipelines and tertiary brake subassembly's brake respectively and connect, and set up one on the every pipeline gas charging valve (14).
9. The multi-stage trolley braking and arresting system according to claim 7, wherein the gap between the bottom of the first fixed brake strips (21) and the top of the second fixed brake strips (22) on the same side is 2-3 mm smaller than the distance between the upper and lower surfaces of the two buffering brake strips (4) on the upper and lower positions of the corresponding side of the trolley (2).
10. The tackle multistage braking and arresting system of claim 7, wherein the arresting device comprises:
the energy absorption device comprises a blocking energy absorber (11), wherein the blocking energy absorber (11) comprises two energy absorption columns, the two energy absorption columns are arranged at one end part of each of the two slide rails (5) far away from the propelling device (1) and are symmetrically distributed along the left side and the right side of the length direction of the slide rail (5), each energy absorption column is coaxially arranged with the outer cylinder (3) of the trolley platform on the corresponding side, and the blocking energy absorber (11) is used for crushing and absorbing energy for the trolley platform device sliding to the end part;
the forced braking blocking device (12) comprises a blocking net, wherein the blocking net is arranged at one end, far away from the two sliding rails (5), of the blocking energy absorber (11) and used for blocking the sliding trolley platform device after the blocking energy absorber (11) is crushed and absorbs energy.
Technical Field
The application belongs to the technical field of shock resistance testing, and particularly relates to a tackle platform multistage brake and arresting system.
Background
For an aviation aircraft structure, before test flight, physical simulation tests of landing, sliding, obstacle crossing and blocking need to be carried out, whether the strength and rigidity of the aircraft structure meet the design requirements in the processes of landing and the like is checked, and the impact resistance of airborne equipment in the process is checked.
Aiming at the landing buffering performance test of an aviation aircraft, a high-speed impact platform is required to simulate the relative speed between the aircraft and the ground. At present, the rotation of the tire of the landing gear is generally simulated by the wheel rotating device in the test, the impact platform is fixed, the non-rotation of the tire of the landing gear and the high-speed movement process of the impact platform in the processes of real landing and the like cannot be simulated, and the consistency of the test working condition and the real working condition is greatly influenced. At present, one of the technical difficulties of a large-tonnage high-speed moving pulley platform is how to brake and block, and the smooth speed reduction and buffering of the pulley platform are realized.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present application provides a tackle multi-stage braking and arresting system.
The application discloses tackle platform multistage brake and arresting system includes:
two slide rails which are fixedly arranged along the horizontal direction and are parallel to each other;
the trolley platform device is arranged on the two slide rails and can slide on the two slide rails in a reciprocating manner along the horizontal direction;
the propulsion device is arranged at one end part of the two slide rails and is configured to provide thrust for the trolley platform device at one end part position so as to drive the trolley platform device to slide;
the brake device comprises multistage brake components with the same structure, the multistage brake components are positioned at the position between the end parts of the two ends of the two slide rails in the length direction, are uniformly distributed at intervals along the length direction, and are used for performing multistage brake deceleration on the sliding table device when the sliding table device slides to the corresponding position;
the blocking device is arranged at the end part, far away from the propelling device, of one end of each of the two sliding rails and used for blocking the sliding platform device after the sliding platform device is braked and decelerated by the brake device.
According to at least one embodiment of this application, coaster platform device is including the coaster platform that is frame construction, coaster platform bottom be provided with the skid shoe of two slide rail looks adaptations, and through the skid shoe slip sets up on two slide rails.
According to at least one embodiment of the present application, the carriage apparatus further comprises:
two pulley table outer cylinders are symmetrically arranged on the left side and the right side of the pulley table along the length direction of the two slide rails;
the two outer cylinders of the trolley platform are matched with the propulsion device, and the propulsion device is a gas propulsion device so as to push the two outer cylinders of the trolley platform to drive the whole trolley platform device to move.
According to at least one embodiment of the present application, the carriage apparatus further comprises:
the buffer brake strip is fixedly arranged at a preset position on the sliding platform;
wherein, the buffering brake strip brakes through the multistage brake subassembly friction with brake equipment.
According to at least one embodiment of the application, two buffer brake strips are symmetrically arranged at the position, close to one sliding rail, of the sliding table up and down;
two buffer brake strips are symmetrically arranged at the position, close to the other slide rail, of the slide carriage;
and the two buffering brake bars close to one of the slide rails and the two buffering brake bars close to the other slide rail are distributed in bilateral symmetry.
According to at least one embodiment of the present application, the brake apparatus further includes:
the buffer platform is arranged along the direction parallel to the two slide rails and is positioned on the inner sides of the two slide rails;
and on the buffering platform, the multistage brake assemblies are uniformly distributed at intervals along the length directions of the two slide rails.
According to at least one embodiment of the present application, each stage of the brake assembly includes:
the plurality of brake actuating cylinders are arranged in the vertical direction, are distributed between the two sliding rails in a half-and-half and bilateral symmetry mode, and are fixedly arranged on the buffer platform through a support seat on each brake cylinder respectively, and in addition, each brake actuating cylinder is connected with a brake cylinder piston in a matching mode;
the rigid brake pressing blocks are fixedly arranged at the bottom of one brake cylinder piston;
each first fixed brake strip is fixedly arranged at the bottom of one rigid brake pressing block along the direction parallel to the length direction of the two sliding rails;
the two rigid brake cushion blocks are fixedly arranged on the buffer platform and symmetrically distributed along the left side and the right side of the length direction of the sliding rail, and each rigid brake cushion block is arranged at the vertical bottom of the first fixed brake strips on the corresponding side;
the two second fixed brake strips are fixedly arranged at the top of one rigid brake pad block along the direction parallel to the first fixed brake strip on the corresponding side, wherein a gap with a preset size is formed between the bottom of the first fixed brake strips and the top of the second fixed brake strips on the same side, so that when the pulley block device slides, the pulley block device is allowed to pass through the gap, and the two buffer brake strips on the upper position and the lower position of the pulley block and the corresponding side can be respectively rubbed with the upper buffer brake strip and the lower buffer brake strip through the first fixed brake strips and the second fixed brake strips;
and the inflation gas tank is connected with a brake actuating cylinder in the brake assembly through an inflation valve.
According to at least one embodiment of the application, the brake assembly in the brake device comprises three stages, namely a first stage brake assembly, a second stage brake assembly and a third stage brake assembly;
the number of the brake actuating cylinder, the brake cylinder piston, the rigid brake press block and the first fixed brake strip in each stage of the brake assembly is 8, wherein 4 of the brake actuating cylinder, the brake cylinder piston, the rigid brake press block and the first fixed brake strip form a group and are close to one of the slide rails, and the other 4 of the brake actuating cylinder, the brake cylinder piston, the rigid brake press block and the first fixed brake strip form a group and are close to;
and the three-level brake assembly shares one air inflation tank, the air inflation tank is connected with the brake actuating cylinder of the three-level brake assembly through 3 pipelines respectively, and each pipeline is provided with one air inflation valve.
According to at least one embodiment of this application, with a plurality of one side clearance between first fixed brake strip bottom and the fixed brake strip top of second compares two of the upper and lower position that the coaster platform corresponds the side the little 2~3mm of buffering brake strip upper and lower surface interval.
According to at least one embodiment of the application, the arresting device comprises:
the energy absorption device comprises two energy absorption columns, the two energy absorption columns are arranged at one end parts, far away from the propulsion device, of the two slide rails and are symmetrically distributed along the left side and the right side of the length direction of the slide rails, each energy absorption column is coaxially arranged with the outer cylinder of the trolley platform on the corresponding side, and the energy absorption device is used for crushing and absorbing energy for the trolley platform device sliding to the end parts;
the forced braking blocking device comprises a blocking net, wherein the blocking net is arranged at one end, far away from the two slide rails, of the blocking energy absorber and used for blocking the trolley platform device after the blocking energy absorber crushes and absorbs energy.
The application has at least the following beneficial technical effects:
the tackle platform multistage brake and arresting system guarantees that the speed of a large-tonnage high-speed structure can be reduced to zero at the tail end of the arresting system through designing the tackle platform multistage brake system and the tackle platform arresting system, and is effectively applied to the fields of tackle platform high-speed impact tests, large-tonnage high-speed structure buffering and speed reduction designs and the like.
Drawings
FIG. 1 is a schematic view of the multi-stage braking and arresting system of the subject scooter;
FIG. 2 is a schematic view of the construction of the brake assembly of the subject multi-stage brake and arresting system;
FIG. 3 is a schematic view of the connection of the piston portion of the brake cylinder in the brake assembly of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be understood that some terms of art that may be referred to in the description of the present application, such as "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate orientations and positional relationships that are based on the orientation shown in the drawings and are used merely for convenience in describing the present application and to simplify the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated without thereby limiting the scope of the present application.
The multi-stage braking and arresting system of the subject application is described in further detail below with reference to fig. 1-3.
The application discloses coaster platform multistage brake and arresting system can include slide rail 5, coaster platform device, advancing device 1, brake equipment and arresting gear.
Specifically, as shown in fig. 1, the number of the slide rails 5 is two; wherein, two slide rails 5 are fixed to be set up on test platform or experimental ground along the horizontal direction, and are parallel to each other between two slide rails 5.
The carriage device is provided on the two slide rails 5 and can slide on the two slide rails 5 in a reciprocating manner in the horizontal direction.
The propulsion device 1 is fixedly arranged on a test platform or test ground, specifically arranged at one end part of two slide rails 5, and configured to provide thrust for the trolley table device at one end part position so as to drive the trolley table device to slide.
The brake device is fixedly arranged on the test platform or the test ground, and specifically comprises multistage brake components with the same structure, wherein the multistage brake components are positioned at positions between the end parts of the two ends of the two slide rails in the length direction of the two slide rails 5 and are distributed at intervals along the length direction for performing multistage brake deceleration on the pulley table device when the pulley table device slides to the corresponding positions.
The arresting device is fixedly arranged on a test platform or test ground, specifically arranged at one end of each of the two slide rails 5 far away from the propulsion device 1, and used for arresting the tackle platform device braked and decelerated by the brake device.
In conclusion, the multi-stage brake and arresting system for the pulley block ensures that the speed of the large-tonnage high-speed structure can be reduced to zero at the tail end of the arresting system by designing the multi-stage brake system for the pulley block and the arresting system for the pulley block, and is effectively applied to the fields of high-speed impact tests for the pulley block, buffering and decelerating designs for the large-tonnage high-speed structure and the like.
Furthermore, in the tackle multi-stage braking and arresting system, the concrete structure of the tackle bracket device can be set in various manners as required; as shown in fig. 1, in a preferred embodiment of the present application, the preferred trolley table device includes a trolley table 2, a trolley table outer cylinder 3, and a buffering brake strip 4.
The trolley platform 2 may be a frame structure composed of a plurality of longitudinal and transverse beams, and in addition, the bottom of the trolley platform 2 is provided with sliding shoes (or sliding grooves) matched with the two sliding rails 5, and the sliding shoes are slidably arranged on the two sliding rails 5. The number of the trolley table outer cylinders 3 is two, and the two trolley table outer cylinders 3 are fixed and symmetrically arranged on the left side and the right side (i.e. the up-down direction in fig. 1) of the trolley table 2 along the length direction of the two slide rails 5.
Further, the buffering brake strip 4 is fixedly arranged at a preset position on the pulley table 2; wherein, the multistage brake subassembly of above-mentioned brake equipment is through carrying out the brake with 4 frictions of buffering brake strip.
Similarly, the specific number and the arrangement position of the buffer brake strips 4 can be selected as required, for example, the upper side, the lower side, the left side and the right side of the pulley table 2; in the above preferred embodiment of the present application, two buffering brake strips 4 are preferably disposed on the trolley platform 2 at positions close to one of the slide rails 5 (see the upper one in fig. 1) in an up-down symmetrical manner; two buffer brake strips 4 are symmetrically arranged at the position, close to the other sliding rail 5 (see the lower part of the figure 1), of the pulley block 2; moreover, two buffering brake bars 4 close to one of the slide rails 5 (see the upper one in fig. 1) and two buffering brake bars 4 close to the other slide rail 5 (see the lower one in fig. 1) are symmetrically distributed along the left and right sides (i.e. the up-down direction in fig. 1) of the length direction of the slide rail 5.
Furthermore, in the tackle multi-stage braking and arresting system, the braking device further comprises a buffering platform 6; the buffering platform 6 is fixedly arranged along a direction parallel to the two slide rails 5 and is located inside the two slide rails 5 (i.e. between the upper and lower slide rails 5 in fig. 1), wherein the multistage brake assemblies are uniformly distributed on the buffering platform 6 at intervals along the length direction of the two slide rails 5.
Similarly, the specific structure of each stage of brake assembly in the multi-stage brake assembly can be properly selected according to the requirement; as shown in fig. 2 and 3, in the above preferred embodiment of the present application, each stage of the brake assembly preferably includes the
Specifically, the number of the
Furthermore, the number of the
The quantity of rigid
The number of the second fixed brake strips 22 is two, and each second fixed
In another preferred embodiment of the present application, the gap between the bottom of the first fixed brake strips 21 and the top of the second fixed
Further, the inflation air tank 13 is connected to the
Furthermore, in the tackle multi-stage braking and arresting system of the present application, the number of stages (i.e. the number) of the brake components included in the braking device and the number of the
In the embodiment, as shown in fig. 1 and 2, the braking assembly in the braking device preferably includes three stages, namely, a first stage braking assembly 8, a second stage braking assembly 9 and a third stage braking assembly 10.
In addition, the number of the
Further, this application still prefers tertiary brake subassembly sharing one and aerifys gas pitcher 13, aerifys gas pitcher 13 and connects through 3 pipelines and tertiary brake subassembly's
Furthermore, in the tackle multi-stage braking and arresting system, in order to enhance the connection stability of each part in each stage of the brake assembly 10, a connecting net may be further included; specifically, a connecting net is arranged between two adjacent rigid brake
Similarly, in the multi-stage braking and arresting system for the trolley platform, the propelling device 1 can be selected from various currently known suitable propellers according to needs, in this embodiment, in order to be matched with the outer cylinder 3 of the trolley platform, preferably, the propelling device 1 is a gas propelling device; the gas propulsion device is provided with two inner cylinders 15, the two inner cylinders 15 are matched with the two pulley table outer cylinders 3, the pulley table outer cylinders 3 are inflated through the inner cylinders 15, the inner cylinders 15 are separated from the pulley table outer cylinders 3, and the two pulley table outer cylinders 3 are pushed to drive the whole pulley table device to move.
Further, in the multi-stage braking and arresting system for a trolley platform of the present application, it is preferable that the arresting device includes an arresting energy absorber 11 and a forcible braking arresting device 12.
Specifically, the arresting energy absorber 11 may include two energy absorbing pillars, and the two energy absorbing pillars are fixed by corresponding supports (not shown in the figure); the two energy absorption columns are arranged at one end (see right end in figure 1) of the two slide rails 5 far away from the propulsion device 1 and are symmetrically distributed along the left side and the right side of the length direction of the slide rails 5, in addition, each energy absorption column is coaxially arranged with the outer cylinder 3 of the pulley table on the corresponding side, wherein the blocking energy absorber 11 is used for crushing and absorbing energy for the pulley table device sliding to the end, and the speed of the pulley table device is further reduced. It should be noted that, the energy-absorbing column can be made of various suitable materials, such as a wood material, according to the requirements of energy absorption.
The forcible braking arresting device 12 may include an arresting net fixedly disposed at one end of the arresting energy absorber 11 away from the two slide rails 5, for arresting the trolley platform device after being crushed and absorbed by the arresting energy absorber 11.
It should be noted that, the stiffness of the arresting energy absorber 11 can be designed according to the requirements, so that buckling instability does not occur while the energy absorber is crushed to absorb energy; the forcible braking arrester 12 is a final arresting device and is used for emergency protection of a test, and after the arresting energy absorber stroke is used up, the pulley block is prevented from rushing out of the slide rail, so that the pulley block device is guaranteed to be completely stopped.
It should be further noted that, in the test process of the tackle multi-stage braking and arresting system of the present application, the multi-stage braking and arresting device works as follows:
1) before the test, the pressure required by the first-stage, second-stage and third-stage impact brake cylinders (namely the brake actuating cylinder 7) can be calculated according to the test speed of the large-tonnage high-speed pulley table, each stage of brake cylinders are pre-inflated based on an inflation gas tank, the rigid brake block is pressed and reduced, and the interval between the first fixed brake strip and the second fixed brake strip is ensured to be 2-3 mm smaller than the interval between the upper and lower buffer brake strips 4 of the pulley table;
2) the large-tonnage high-speed pulley table device enters a brake blocking device, four buffering brake strips interact with the first-stage brake assembly fixed brake strip firstly, and the pulley table device starts to decelerate;
3) the buffer brake strip of the sliding platform device gradually interacts with the fixed brake strips of the second-stage brake assembly and the third-stage brake assembly, and the speed is further reduced;
4) when the pulley table device is not completely stopped after passing through the brake system, the pulley table device collides with a blocking energy absorber of the blocking system, and the blocking energy absorber generates crushing energy absorption to further reduce the speed of the pulley table device;
5) if the pulley block device is not completely stopped, an emergency blocking net mode of forcibly braking the blocking device 12 is adopted to carry out emergency protection on the test, and the pulley block device is prevented from rushing out of the slide rail to cause danger after the stroke of the blocking energy absorber is used up.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.