阅读说明：本技术 一种止回装置、防坠锁定机构及防坠方法 (Non-return device, anti-falling locking mechanism and anti-falling method ) 是由 彭鹏 陈居森 黄昌林 于 2020-06-17 设计创作，主要内容包括：本发明涉及水利水电工程,特别是一种止回装置、防坠锁定机构及防坠方法。止回装置包括主梁、第一压紧块和支撑件；主梁的第一端与第一压紧块通过第一转轴铰接；支撑件一端与主梁相连,支撑件另一端与第一压紧块铰接；第一压紧块由主梁的第一端和支撑件端部向外凸出；第一压紧块绕第一转轴正向转动时,第一压紧块凸出于第一端的距离减小；第一压紧块绕第一转轴反向转动时,第一压紧块凸出于第一端的距离增大；支撑件用于对第一压紧块提供推力,以使第一压紧块压紧通道,且支撑件能够随第一压紧块的转动伸出或缩回。防坠锁定机构和防坠方法均基于上述的止回装置。本发明的装置结构简单、可靠性高。(The invention relates to hydraulic and hydroelectric engineering, in particular to a non-return device, an anti-falling locking mechanism and an anti-falling method. The check device comprises a main beam, a first pressing block and a supporting piece; the first end of the main beam is hinged with the first pressing block through a first rotating shaft; one end of the supporting piece is connected with the main beam, and the other end of the supporting piece is hinged with the first pressing block; the first pressing block protrudes outwards from the first end of the main beam and the end part of the support piece; when the first pressing block rotates around the first rotating shaft in the positive direction, the distance of the first pressing block protruding out of the first end is reduced; when the first pressing block rotates reversely around the first rotating shaft, the distance of the first pressing block protruding out of the first end is increased; the supporting piece is used for providing thrust for the first pressing block so that the first pressing block presses the channel, and the supporting piece can extend out or retract along with the rotation of the first pressing block. The anti-falling locking mechanism and the anti-falling method are both based on the non-return device. The device has simple structure and high reliability.)

1. The non-return device is characterized by comprising a main beam (1), a first pressing block (3) and a support piece (2);

the first end of the main beam (1) is hinged with the first pressing block (3) through a first rotating shaft (11);

one end of the supporting piece (2) is connected with the main beam (1), and the other end of the supporting piece (2) is hinged with the first pressing block (3);

the first pressing block (3) protrudes outwards from the first end of the main beam (1) and the end part of the support (2); when the first pressing block (3) rotates around the first rotating shaft (11) in the forward direction, the distance of the first pressing block (3) protruding out of the first end is reduced; when the first pressing block (3) rotates reversely around the first rotating shaft (11), the distance of the first pressing block (3) protruding out of the first end is increased;

the supporting piece (2) is used for providing pushing force for the first pressing block (3) and enabling the first pressing block (3) to press the channel (0), and the supporting piece (2) can extend out or retract along with the rotation of the first pressing block (3).

2. A no-return device according to claim 1, characterised in that the first pressure block (3) has an abutment surface (31) thereon, the point on the abutment surface (31) being at a gradually increasing distance from the first axis of rotation (11) in the direction from the main beam (1) towards the support (2).

3. The no-return device according to claim 2, characterized in that it further comprises a second compression block (4), the second end of the main beam (1) and the end of the support (2) being connected by means of the second compression block (4);

the second pressing block (4) is hinged with the second end of the main beam (1) through a second rotating shaft (12), and one end, far away from the first pressing block (3), of the supporting piece (2) is hinged with the second pressing block (4);

the second compression block (4) protrudes outwards from the second end of the main beam (1) and the end of the support (2); when the second pressing block (4) rotates around the second rotating shaft (12) in the forward direction, the distance of the second pressing block (4) protruding out of the second end is reduced; when the second pressing block (4) rotates reversely around the second rotating shaft (12), the distance of the second pressing block (4) protruding out of the second end is increased.

4. A non-return device according to claim 3, characterised in that the second holding-down piece (4) is arranged in mirror image with the first holding-down piece (3) with respect to the cross section of the middle of the girder (1).

5. A no-return device according to any one of claims 2-4, characterised in that the abutment surface (31) is provided with friction lines.

6. A non-return device according to claim 3, characterized in that the support (2) comprises thrust means (22), the thrust means (22) being intended to be extended or retracted with the rotation of the first presser (3) and being intended to provide thrust to the first presser (3);

the thrust device (22) comprises one or more of a spring, an air spring, a disk-shaped elastic sheet, an air cylinder, a hydraulic oil cylinder and an electromagnetic spring.

7. A no-return device according to claim 6, characterised in that the support (2) further comprises a strut (21), at least one end of the strut (21) being connected to one of the thrust devices (22).

8. The no-return device according to claim 7, characterized in that the strut (21) comprises a sleeve (212) and a screw, the sleeve (212) being in threaded connection with the screw.

9. A no-return device according to claim 7, characterised in that one thrust device (22) is connected to each end of the strut (21).

10. A no-return device according to claim 9, characterized in that said struts (21) comprise a first strut (21a) and a second strut (21b), said thrust devices (22) being two in number;

one end of the first support rod (21a) is hinged with the middle part of the main beam (1), and the other end of the first support rod is hinged with the first pressing block (3) through a first thrust device (22);

one end of the second support rod (21b) is hinged with the middle of the main beam (1), and the other end of the second support rod is hinged with the second pressing block (4) through a second thrust device (22).

11. A fall arrest locking mechanism, characterised by comprising a no-return device according to any one of claims 1 to 10, and a connector (5) for connection to a gate slot vehicle, the connector (5) being connected at one end to the no-return device;

the first pressing block (3) is arranged in a gate slot of the gate and is in contact with a gate slot embedded part (6).

12. The anti-falling method is characterized by comprising the following steps:

the anti-falling locking mechanism is arranged in a gate slot of the gate, so that the first pressing block (3) is in contact with a gate slot embedded part (6) in the gate slot on one side, the second pressing block (4) is in contact with a gate slot embedded part (6) in the gate slot on the other side, and the supporting part (2) is positioned below the main beam (1).

Technical Field

The invention relates to hydraulic and hydroelectric engineering, in particular to a non-return device, an anti-falling locking mechanism and an anti-falling method.

Background

The door slot cloud vehicle is mainly divided into two states of locking and climbing in the using process. In a locked state, the door slot cloud vehicle and the door slot are connected with each other, the door slot is reinforced, and concrete pouring and other processes are completed; after the concrete is preliminarily solidified, the gate slot cloud vehicle is separated from the gate slot and climbs, and the climbing is generally divided into two modes of hydraulic jacking and self-climbing of the electric hoist. In the climbing process, the gate slot cloud vehicle is connected with a pre-buried cone in the concrete through the hydraulic jacking device or is connected with a lifting lug on the gate slot through the electric hoist and the steel wire rope, and the safety coefficient in the climbing process is from the safety coefficient of the climbing devices such as the hydraulic jacking device or the electric hoist. Meanwhile, the door slot cloud vehicle rises along with the rising of the door slot in the construction process, and the height above the ground of the door slot cloud vehicle reaches more than 100 meters at the highest time. Therefore, it is necessary to develop an anti-falling locking mechanism to improve the safety factor of the gate slot cloud vehicle.

The inventor of the application finds that the following conditions are required to achieve the anti-falling of the door slot cloud vehicle: the door slot cloud vehicle is allowed to ascend in the door slot, and when the door slot cloud vehicle is accidentally descended, the door slot cloud vehicle is prevented from descending, namely: under the working state of the anti-falling locking mechanism, the door slot cloud vehicle is only allowed to move in one direction. It follows that the fall arrest locking mechanism which can achieve the above described function is in fact a non-return device for preventing the reverse movement of the gate way vehicle in the passage formed by the gate way.

Disclosure of Invention

The invention aims to: aiming at the problem of low safety coefficient of a door slot cloud vehicle in the prior art, a non-return device, an anti-falling locking mechanism and an anti-falling method are provided.

In order to achieve the purpose, the invention adopts the technical scheme that:

a check device comprises a main beam, a first compression block and a support piece; the first end of the main beam is hinged with the first pressing block through a first rotating shaft; one end of the supporting piece is connected with the main beam, and the other end of the supporting piece is hinged with the first pressing block; the first compression block protrudes outwards from the first end of the main beam and the end part of the support piece; when the first pressing block rotates around the first rotating shaft in the positive direction, the distance of the first pressing block protruding out of the first end is reduced; when the first pressing block rotates reversely around the first rotating shaft, the distance of the first pressing block protruding out of the first end is increased; the supporting piece is used for providing thrust for the first pressing block so that the first pressing block presses the channel, and the supporting piece can extend out or retract along with the rotation of the first pressing block.

When the non-return device provided by the invention is used, the non-return device is placed in the channel, under the thrust action of the supporting piece, the first pressing block is contacted with one side of the channel, one side of the non-return device, which is far away from the first pressing block, is contacted with the other side of the channel, when the non-return device moves in the channel, the channel applies a friction force to the non-return device, and the supporting piece ensures that the contact pressure exists between the side wall of the channel and the non-return device, namely: the friction force between the channel side wall and the check device is ensured, so that the first pressing block can be driven to rotate by the friction force given by the channel. In particular, when the non-return device is translated in the forward direction, that is: the frictional force that the passageway given first compact heap makes first compact heap produce around first pivot forward pivoted motion trend, and at this moment, the width of whole non return device has the trend that reduces to have less frictional force, non return device can be smooth forward translation. When the non-return device moves in the reverse direction, namely: the friction force of the channel for the first pressing block enables the first pressing block to generate a movement trend of rotating around the first rotating shaft in the reverse direction, and the thrust of the supporting piece on the effect of the first pressing block is combined, so that the width of the whole check device has an increasing trend, the side wall of the channel can be deformed, the first pressing block can be embedded into the side wall of the channel, and the check device is prevented from moving in the reverse direction.

In the invention, the forward rotation and the reverse rotation of the first pressing block are defined by taking the movement direction of the check device as a reference. Namely: in the channel, the rotation direction of the non-return device capable of moving smoothly is the forward rotation of the first pressing block; the rotation direction in which the movement of the check device is prevented is the reverse rotation of the first pressing block.

The non-return device is simple in structure, adopts a pure mechanical structure to realize non-return, and is high in working reliability. Connect this non return device on door slot cloud car to make non return device's first compact heap and door slot bury the piece and form pressure contact, can realize that door slot cloud car goes upward smoothly, and realize the non return when door slot cloud car produces the motion trend that descends, thereby help improving the security of door slot cloud car.

As an optional aspect of the present invention, the first pressing block has an abutting surface, and a distance between a point on the abutting surface and the first rotating shaft gradually increases in a direction from the main beam to the support.

Through foretell structure, first compact heap is the cam structure, and when first compact heap rotated along the forward, the less part of distance with first pivot on the butt face rotated to non return device tip to make the holistic width of non return device have the trend of reducing, with the frictional force that reduces non return device and passageway lateral wall. When the first pressing block rotates along the reverse direction, the part, with the larger distance from the first rotating shaft, of the abutting surface rotates towards the end part of the check device, so that the whole width of the check device tends to be increased, the side wall of the channel deforms under the pressure action of the first pressing block, and the first pressing block is embedded into the side wall of the channel to prevent the check device from continuously moving in the direction.

In the structure, the closer the point on the abutting surface to the support piece, the larger the distance between the point and the first rotating shaft, so that the thrust applied to the first pressing block by the support piece always enables the first pressing block to have the trend of reverse rotation, and further the first pressing block is ensured to be capable of constantly keeping pressure contact with the channel. When the non-return device moves forward, the friction force drives the first pressing block to rotate along the forward direction, so that the friction force is reduced, the force for driving the first pressing block to rotate in the forward direction can overcome the thrust of the support piece on the first pressing block, and the non-return device moves normally along the forward direction. When the non-return device moves reversely, the thrust of the supporting piece enables the first pressing block to rapidly start to rotate reversely, so that the first pressing block is abutted against the side wall of the channel and is embedded into the side wall of the channel.

The abutting surface is a part of curved surface which can abut against the side wall of the channel on the first pressing block so as to realize the non-return function of the non-return device. The arc range of the circumference covered by the abutting surface is less than 360 degrees.

As an optional scheme of the invention, the main beam further comprises a second compression block, and the second end of the main beam is connected with the end part of the support member through the second compression block; the second pressing block is hinged with the second end of the main beam through a second rotating shaft, and one end, far away from the first pressing block, of the supporting piece is hinged with the second pressing block; the second compression block protrudes outwards from the second end of the main beam and the end of the support piece; when the second pressing block rotates around the second rotating shaft in the forward direction, the distance of the second pressing block protruding out of the second end is reduced; when the second pressing block rotates reversely around the second rotating shaft, the distance of the second pressing block protruding out of the second end is increased.

In the structure, the second pressing block is arranged at the second end of the main beam, so that the two ends of the non-return device can participate in non-return simultaneously, and the device runs stably.

The definition of the forward rotation and the reverse rotation of the second holding-down piece is also based on the movement direction of the non-return device. Namely: in the channel, the rotation direction of the non-return device capable of moving smoothly is the forward rotation of the second compression block; the rotation direction in which the movement of the check device is prevented is the reverse rotation of the second pressing block.

As an optional scheme of the present invention, the second compression block and the first compression block are arranged in a mirror image manner with respect to a cross section of the middle portion of the main beam. In the structure, the force for playing the check action born by the first pressing block and the second pressing block is basically the same.

As an optional aspect of the present invention, the abutting surface is provided with friction grains. Through setting up friction line, when first compact heap second compact heap reversal, thereby more be favorable to imbedding in the passageway lateral wall and improve the reliability of non return.

As an alternative of the present invention, the supporting member includes a thrust device, the thrust device is used for extending out or retracting with the rotation of the first pressing block and is used for providing thrust for the first pressing block; the thrust device comprises one or more of a spring, an air spring, a butterfly elastic pad, an air cylinder, a hydraulic oil cylinder and an electromagnetic spring.

The thrust device can select one or more of above-mentioned structure, and foretell structure can enough lengthen or shorten to allow the compact heap to take place to rotate, can export thrust again, make the compact heap can with the lateral wall in close contact with of passageway.

As an alternative of the invention, the support further comprises a brace bar, at least one end of the brace bar being connected to one of the thrust devices.

As an alternative of the present invention, the stay bar includes a sleeve and a screw, and the sleeve is in threaded connection with the screw. With the above structure, the stay can be extended or shortened and stabilized at a specific length. Thereby can set up the length of vaulting pole to the passageway of different width to increase this non return device's application scope. The size of the pressure between the pressing block and the side wall of the channel can be adjusted in the initial state by adjusting the length of the supporting rod. In addition, when the check device is required to move reversely, the length of the supporting rod can be adjusted, so that the first pressing block and the second pressing block are separated from the channel. When the door slot cloud car is used, if the door slot cloud car is expected to normally descend, the length of the support rod can be shortened, and the pressing block is separated from the door slot.

As an alternative of the present invention, two ends of the stay bar are respectively connected with one thrust device.

By adopting the structure, the two pressing blocks work under the pushing of the two thrust devices respectively, even if one thrust device fails, the other thrust device can work normally, and the working reliability of the check device is improved.

As an alternative scheme of the present invention, the support rod includes a first support rod and a second support rod, and the number of the thrust devices is two; one end of the first support rod is hinged with the middle part of the main beam, and the other end of the first support rod is hinged with the first pressing block through a first thrust device; one end of the second support rod is hinged to the middle of the main beam, and the other end of the second support rod is hinged to the second pressing block through a second thrust device.

By adopting the structure, the two support rods are respectively connected with the two pressing blocks, even if one support rod fails, the other support rod can also normally work, and therefore the working reliability of the check device is improved.

An anti-falling locking mechanism comprises the check device and a connecting piece for connecting a door slot cloud vehicle, wherein one end of the connecting piece is connected with the check device; the first pressing block is arranged in the gate slot of the gate and is contacted with the embedded part of the gate slot.

By adopting the structure, when in use, the gate slot cloud vehicle is connected to the anti-falling locking mechanism, the anti-falling locking mechanism moves along with the movement of the gate slot cloud vehicle, and the gate slot forms a channel for the working of the anti-falling locking mechanism. When the door slot cloud vehicle ascends, the first pressing block has a forward rotation trend under the action of friction force, so that the width of the whole anti-falling locking mechanism has a reduced trend, the friction force is small, and the door slot cloud vehicle is allowed to smoothly ascend; if there is the accident to take place for the gate slot cloud car produces down trend, first compact heap produces the trend of antiport, make whole width of preventing weighing down locking mechanical system have the trend of increase, during first compact heap and second compact heap are embedded into the piece of burying of gate slot both sides, and under the action of gravity of gate slot cloud car self, it takes place to warp to bury the piece under the pressure effect of first compact heap and second compact heap, make first compact heap and second compact heap all with the piece chucking that buries of gate slot, avoid the tenesmus.

An anti-falling method comprises the following steps: the anti-falling locking mechanism is arranged in a gate slot, the first pressing block is in embedded part contact with the gate slot in the gate slot on one side, the second pressing block is in embedded part contact with the gate slot in the gate slot on the other side, and the supporting piece is positioned below the main beam.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the non-return device provided by the invention has a simple structure, realizes non-return by adopting a pure mechanical structure, and has high working reliability.

2. The anti-falling locking mechanism provided by the invention realizes the anti-falling of the gate cloud vehicle by utilizing the non-return device, and has the advantages of simple structure and high working reliability.

Drawings

Fig. 1 is a schematic structural view of a check device provided in embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a check device provided in embodiment 1 of the present invention when the check device moves in a forward direction.

Fig. 3 is a schematic structural view of the check device provided in embodiment 1 of the present invention when the check device moves in the reverse direction.

Fig. 4 is a schematic diagram showing a comparison of distances between different points on the abutting surface of the check device and the first rotating shaft according to embodiment 1 of the present invention.

Fig. 5 is a schematic perspective view of a check device provided in embodiment 1 of the present invention.

Fig. 6 is a schematic structural view of a check device provided in embodiment 2 of the present invention.

FIG. 7 is a schematic structural view of the fall arrest locking mechanism provided in example 3 of the present invention.

FIG. 8 is a schematic view of the fall arrest locking mechanism provided in accordance with example 3 of the present invention in operation.

Icon: 0-channel; 1-a main beam; 11-a first shaft; 12-a second shaft; 13-a mounting seat; 2-a support; 21-a strut; 211-double-ended screw; 212-a sleeve; 21 a-a first brace bar; 21 b-a second brace bar; 22-a thrust device; 3-a first compact; 31-an abutment surface; 4-a second compact; 5-a connector; 6-gate slot embedded parts.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.