Work platform and method for preventing falling objects from damaging the platform

Abstract

The application discloses a safe operation platform and a platform operation method for preventing falling objects from hurting people, and belongs to the technical field of safe operation platforms.The safe operation platform comprises a supporting frame, a work platform arranged at the lower part of the supporting frame, a protective shed arranged above the work platform, and a connection between the protective shed and the upper part of the supporting frame.The work platform is in a "convex" shape, the convex work platform is surrounded by the supporting frame body on three sides to form a protection cabin, and the protection cabin can accommodate and protect workers.The platform operation method comprises the following operation steps: device installation, safety rope installation, and triggering protection, etc.The application has the advantages of simple operation, height lifting, three-side opening, favorable operation, strong protection, and effective prevention of falling objects from hurting people, and provides protection for workers.

Description

Technical Field

[0001] This invention belongs to the field of construction equipment technology, specifically relating to a working platform and a platform operation method for preventing injury from falling objects. Background Technology

[0002] Roof and rockfalls are sudden rockfalls caused by the gradual cracking of surrounding rock in mine tunnels due to wind and water erosion and blasting vibrations. They are highly random, concealed, and extremely dangerous, posing a significant risk of injury. They are a common safety accident during underground mine tunneling, excavation, and chamber construction, accounting for approximately 34% of all underground mine safety accidents. Underground workers face a high risk of roof and rockfalls and falling objects from heights during tasks such as prying, loading explosives, and various auxiliary operations. Common personal protective equipment (PPE) is heavy, offers limited protection, and restricts workers' movements. Existing protective platforms against falling objects offer stronger protection, but they are generally box-like structures with fixed pillars or railings on all four sides, limiting the working space and hindering operation.

[0003] Therefore, researching and developing a work platform that is simple to operate, highly protective, ensures the safety of workers, provides a large working space, and does not interfere with operations while preventing injury from falling objects is the key to solving the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a safe working platform and platform operation method that is simple to operate, has strong protection, adjustable height, is open on three sides, can provide maximum working space for workers, can effectively prevent injury from falling objects (such as falling rocks), and protect workers' safety from falling object injuries.

[0005] The first objective of this invention is achieved as follows: a safe working platform to prevent injury from falling objects, comprising a support frame, a working platform disposed at the lower part of the support frame, a protective canopy disposed above the working platform, the protective canopy being connected to the upper part of the support frame, the working platform being convex in shape, the protruding part of the convex working platform being surrounded on three sides by the support frame to form a protective chamber, the protective chamber being able to accommodate and protect the workers.

[0006] The second objective of this invention is achieved by providing a platform operation method for a safe working platform to prevent injury from falling objects, comprising the following steps:

[0007] A. Installation: The device, after its upper support frame is lowered, is transported to the predetermined working position in the mine shaft, tunnel, chamber, etc. by a telescopic boom forklift. The lifting compression steel rope with compression return spring is set up. The hydraulic cylinder rises and pulls the steel rope to compress the spring. After being lifted into place, the locking bolt is inserted into the locking bolt hole of the sliding sleeve support to fix the upper and lower support frames. At the same time, the protective canopy is raised, the trigger mechanism is set in place, and the forces of the elastic rotating baffle, connecting rod, and traction rope on the swing arm are kept balanced.

[0008] B. Install safety ropes. After the device is installed in place, the operator enters the work platform and ties the two safety ropes on the left and right sides of the operator's waist. Alternatively, the operator can first put on a work safety belt and connect the two safety ropes to the work safety belt. Then, wear cushioning foam on the buttocks, elbows, and other parts. After putting on the safety belt, the operator can carry out the work operation on the work platform.

[0009] C. Trigger protection: When a sudden rockfall or other event occurs, the protective canopy above the work platform will be impacted by falling rocks or other objects. If the impact force reaches a certain limit, the trigger mechanism will break the balance. That is, when the backward thrust of the free end of the boom exceeds the bearing capacity of the elastic rotating baffle, the balance is broken. The free end of the boom pushes open the elastic rotating baffle and swings backward and upward. At the same time, the compression spring resets and pulls the boom backward faster through the traction rope. The free end of the boom drives the safety rope to quickly pull the workers on the work platform into the protective chamber, protecting the safety of the workers.

[0010] The present invention has the following technical effects:

[0011] This invention employs a three-sided open work platform with an adjustable overall height to maximize the working space for operators. A protective compartment is installed at the rear of the work platform, allowing operators to enter and be protected in the event of falling rocks or other impacts. Using a safety rope, triggering mechanism, and linkage system, the system automatically pulls operators into the protective compartment in the event of a falling object, eliminating the need for operator judgment and reaction, reducing time spent on the work platform, and lowering the probability of injury from falling objects. The use of a traction rope and compression return spring further accelerates the speed at which the safety rope pulls the operator into the protective compartment, further reducing the time operators spend outside and lowering the probability of injury. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the device after it is triggered;

[0014] Figure 3 This is a schematic diagram of the trigger mechanism configuration state structure of the device of the present invention;

[0015] Figure 4 This is a schematic diagram of the base and elastic rotating baffle assembly of the device of the present invention;

[0016] Figure 5 This is a schematic diagram of the connection structure between the traction rope mechanism and the swing arm frame of the device of the present invention;

[0017] Figure 6 This is a schematic diagram of the structure when the lifting and compression steel rope of the device of the present invention is installed;

[0018] In the diagram: 1-Support frame, 101-Lower support frame, 102-Upper support frame, 2-Working platform, 3-Protective canopy, 301-Primary protective canopy, 302-Secondary protective canopy, 4-Protective compartment, 5-Connecting rod, 6-Swing boom, 7-Safety rope, 8-Elastic rotating baffle, 9-Traction rope, 10-Hydraulic cylinder, 11-Buffer pad, 12-Compression reset spring steel cylinder, 13-Baffle tension spring, 14-Telescopic boom forklift seat, 15-Safety rope sleeve, 16-Tension spring adjusting rod, 17-Lifting and compression steel rope, 18-Locking bolt insertion hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings, but this is not intended to limit the present invention in any way. Any modifications or substitutions made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0020] As attached Figure 1 As shown in Figure 6, the present invention provides a safety work platform to prevent injury from falling objects, including a support frame 1, a work platform 2 at the lower part of the support frame, a protective canopy 3 above the work platform, the protective canopy 3 being connected to the upper part of the support frame 1, the work platform 2 being convex in shape, and the protruding part of the convex work platform being surrounded on three sides by the support frame to form a protective chamber 4, the protective chamber 4 being able to accommodate and protect the workers.

[0021] The protective canopy 3 is hinged to the upper part of the support frame 1. The front section of the protective canopy 3 is connected to the swing arm 6 on both sides of the support frame via a connecting rod 5. The upper end of the swing arm 6 is rotatably connected to the upper end of the support frame. A safety rope 7 is installed at the free end of the swing arm 6. The safety rope 7 passes through the support frame behind the work platform and its free end can be connected to the worker. Under a certain pressure, the protective canopy 3 can rotate downward and drive the swing arm 6 to swing backward via the connecting rod 5. The free end of the swing arm 6 pulls the safety rope 7 to pull the worker on the work platform into the protective chamber 4.

[0022] The free end of the swing arm 6 is equipped with a differential fall arrester (differential tensioner), and the safety rope 7 is provided by the differential fall arrester.

[0023] The magnitude of the pressure is set by a trigger mechanism.

[0024] The triggering mechanism includes a spring-loaded rotating baffle 8 that blocks the movement of the free end of the swing arm. The spring-loaded rotating baffle 8, the swing arm 6, and the connecting rod 5 constitute a triggering balance. Under the action of gravity, the protective canopy 3 drives the connecting rod 5 to push the free end of the swing arm 6 against the spring-loaded rotating baffle 8, which provides a counterforce to maintain balance. When falling rocks or other objects exert downward pressure on the protective canopy 3, if the backward thrust of the free end of the swing arm 6 exceeds the bearing capacity of the spring-loaded rotating baffle, the balance is broken, and the free end of the swing arm 6 pushes away the spring-loaded rotating baffle 8 and swings backward.

[0025] The elastic rotating baffle 8 is an adjustable elastic rotating baffle, which facilitates the setting of trigger sensitivity.

[0026] The boom 6 is equipped with a traction rope 9, the other end of which is connected to a compression return spring 12. When the trigger balance is broken, the tension of the traction rope is lower than the rotation axis of the boom, and the spring returns to its original position, causing the boom to swing backward at an accelerated speed. The free end of the boom pulls the safety rope to quickly pull the workers on the work platform into the protective chamber, greatly reducing the probability of being injured by falling objects.

[0027] The protective shed 3 includes a primary protective shed 301 and a secondary protective shed 302, which are arranged in layers.

[0028] The support frame 1 comprises upper and lower parts. The upper support frame 102 is a liftable support frame, and the vertical support of the upper support frame 102 can slide up and down along the vertical support of the lower support frame 101 and can be locked. After the lifting structure is lowered, the height is reduced and the volume is reduced, which is beneficial for transportation.

[0029] The vertical support of the upper and lower support frames is a sliding sleeve support and is locked and fixed by locking bolts. The upper support frame is raised and lowered by a hydraulic cylinder 10.

[0030] A buffer pad 11 is provided on the side wall of the protective chamber.

[0031] The cushioning pad is cushioning foam.

[0032] The platform operation method for preventing injuries from falling objects includes the following steps:

[0033] A. Device Installation: The device, after its upper support frame is lowered, is transported to the predetermined working position in the mine shaft, tunnel, chamber, etc., using a telescopic boom forklift. A lifting compression steel cable with a compression return spring is installed. The hydraulic cylinder rises, pulling the compression steel cable to compress the return spring. After being lifted into position, the locking bolt is inserted into the locking bolt hole of the sliding sleeve support to fix the upper and lower support frames. Simultaneously, the protective canopy is raised, the trigger mechanism is set in place, and the forces acting on the spring-loaded rotating baffle, connecting rod, and traction rope on the boom are balanced. Figure 1 (as shown in the untriggered state)

[0034] B. Install safety ropes. After the device is installed in place, the operator enters the work platform and ties the two safety ropes on the left and right sides of the operator's waist. Alternatively, the operator can first put on a work safety belt and connect the two safety ropes to the work safety belt. Then, wear cushioning foam in the buttocks, elbows, and other areas. After putting on the safety belt, the operator can carry out the work operation on the work platform. The three-sided open work platform does not affect the operation of prying, loading, etc.

[0035] C. Trigger protection: When a sudden rockfall or other event occurs, the protective canopy above the work platform is struck by falling rocks or other objects. If the impact force reaches a certain limit, the trigger mechanism breaks the balance. That is, when the backward thrust of the free end of the boom exceeds the bearing capacity of the elastic rotating baffle, the balance is broken. The free end of the boom pushes open the elastic rotating baffle and swings backward and upward. At the same time, the spring resets and pulls the boom backward faster via the traction rope. The free end of the boom drives the safety rope to quickly pull the workers on the work platform into the protective chamber, protecting the safety of the workers. Figure 2 The trigger state is shown.

[0036] Working Principle: This invention features a trigger mechanism. Workers are connected to this mechanism via safety belts and ropes. When the protective canopy above the work platform is impacted by falling objects or rocks with a force exceeding a certain limit, the mechanism is triggered, instantly pulling the worker into the safety enclosure and protecting their safety. This device employs a physical mechanical structure, ensuring durability and a long service life. It can be transported using a multi-functional telescopic boom forklift. To prevent accidental injury to workers during the triggering process, workers must wear cushioning foam around their hips and elbows. This invention is suitable for operations in areas with a risk of falling objects, such as underground tunnel construction, traffic tunnel construction, chamber construction, and building demolition.

Claims

1. A safety work platform to prevent injury from falling objects, comprising a support frame (1), characterized in that: A working platform (2) is set at the lower part of the support frame, and a protective shed (3) is set above the working platform. The protective shed (3) is connected to the upper part of the support frame (1). The working platform (2) is convex. The protruding part of the convex working platform is surrounded on three sides by the support frame to form a protective chamber (4). The protective chamber (4) can accommodate and protect the workers. The protective shed (3) is hinged to the upper part of the support frame (1). The front part of the protective shed (3) is connected to the swing arm frame (6) set on both sides of the support frame through a connecting rod (5). The upper end of the swing arm frame (6) is rotatably connected to the upper end of the support frame. A safety rope differential tensioner is set at the free end of the swing arm frame (6). The safety rope (7) passes through the support frame on the back of the work platform and its free end can be connected to the worker. The protective canopy (3) can rotate downward under a certain pressure and drive the swing arm (6) to swing backward through the connecting rod (5). The free end of the swing arm (6) pulls the safety rope (7) to pull the worker on the work platform into the protective chamber (4). The magnitude of the certain pressure is set by the triggering mechanism. The triggering mechanism includes an elastic rotating baffle (8) that blocks the movement of the free end of the swing arm. The elastic rotating baffle (8), the swing arm (6), and the connecting rod (5) constitute the triggering balance. A traction rope (9) is set on the swing arm (6). The other end of the traction rope (9) is connected to the compression return spring (12).

2. The safety work platform for preventing injury from falling objects according to claim 1, characterized in that: The protective shed (3) includes a primary protective shed (301) and a secondary protective shed (302), with the primary and secondary protective sheds arranged in layers.

3. The safety work platform for preventing injury from falling objects according to claim 1, characterized in that: The support frame (1) includes upper and lower parts. The upper support frame (102) is a liftable support frame. The vertical support of the upper support frame (102) can slide up and down along the vertical support of the lower support frame (101) and can be locked.

4. The safety work platform for preventing injury from falling objects according to claim 3, characterized in that: The vertical support of the upper and lower support frames is a sliding sleeve support and is locked and fixed by locking bolts. The upper support frame is raised and lowered by a hydraulic cylinder (10).

5. The safety work platform for preventing injury from falling objects according to claim 1, characterized in that: A buffer pad (11) is provided on the side wall of the protective chamber.

6. A platform operation method using the safety operating platform for preventing injury from falling objects as described in any one of claims 1-5, characterized in that, The process includes the following steps: A. Device installation: Using a telescopic boom forklift, the device, after its upper support frame has been lowered, is transported to the designated working position in the mine shaft, tunnel, or chamber. A lifting compression steel cable for the compression return spring is installed. The hydraulic cylinder rises, pulling the compression steel cable to compress the return spring. Locking bolts are inserted into the locking bolt holes of the sliding sleeve support to fix the upper and lower support frames. Simultaneously, the protective canopy is raised, the trigger mechanism is set in place, and the forces acting on the elastic rotating baffle, connecting rod, and traction rope on the boom are balanced. B. Safety rope installation: After the device is installed, the operator enters the working platform and attaches the two safety ropes to both sides of the operator's waist. Alternatively, a work safety belt can be worn first, and the two safety ropes can be connected to the work platform. Wear a safety harness, and then wear cushioning foam around the hips and elbows. After wearing these, perform operations on the work platform. The open work platform on three sides does not significantly affect the prying and loading operations in underground mine tunnels. C. Trigger protection: When a sudden rockfall occurs, the protective canopy above the work platform will be impacted by falling rocks. If the impact force reaches a certain limit, the trigger mechanism will break the balance. That is, when the backward thrust of the free end of the boom exceeds the bearing capacity of the elastic rotating baffle, the balance is broken. The free end of the boom pushes open the elastic rotating baffle and swings backward and upward. At the same time, the spring resets and pulls the boom backward through the traction rope. The free end of the boom drives the safety rope to quickly pull the workers on the work platform into the protective chamber, protecting the safety of the workers.

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