CN211775648U

CN211775648U - Anti-falling device

Info

Publication number: CN211775648U
Application number: CN201922178140.9U
Authority: CN
Inventors: 陈立剑
Original assignee: Guangdong Jiqian Construction Engineering Co ltd
Current assignee: Guangdong Jiqian Construction Engineering Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-27
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses an anti-falling device, include: the guide seat is provided with an accommodating cavity, a through mounting hole is formed in the side wall of the guide seat, and a first opening is formed in the front end of the guide seat; the anti-falling stop block is arranged in the accommodating cavity, the top surface of the anti-falling stop block is abutted against the inner wall of the top of the accommodating cavity, and a first horizontal sliding groove is formed in the side surface of the anti-falling stop block; the cross rod is arranged in the mounting hole, penetrates through the side wall of the guide seat and is inserted into the first horizontal sliding groove, so that the anti-falling stop block horizontally slides in the accommodating cavity and can slidably extend out of the first opening; and the triggering device is used for driving the anti-falling stop block to horizontally slide. The utility model discloses a safety device simple structure, the assembly accuracy requires lowly, low in manufacturing cost. The utility model discloses can be applied to in building scaffold's the subassembly.

Description

Anti-falling device

Technical Field

The utility model relates to a construction scaffolding's subassembly field, in particular to anti-falling device.

Background

In the field of buildings, particularly middle and high-rise buildings, an attached lifting scaffold is widely used in construction, and the attached lifting scaffold is required to be provided with an anti-falling safety mechanism in the using, lifting and descending processes. At present, most of the attached lifting scaffolds are provided with a falling-preventing device on a guide seat. The existing anti-falling device has the disadvantages of complex structure, high assembly precision requirement and higher manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a falling preventing device to solve one or more technical problems that exist among the prior art, provide a profitable selection or create the condition at least.

The technical scheme adopted for solving the technical problems is as follows:

a fall arrest device, comprising:

the guide seat is provided with an accommodating cavity, a through mounting hole is formed in the side wall of the guide seat, and a first opening is formed in the front end of the guide seat;

the anti-falling stop block is arranged in the accommodating cavity, the top surface of the anti-falling stop block is abutted against the inner wall of the top of the accommodating cavity, and a first horizontal sliding groove is formed in the side surface of the anti-falling stop block;

the cross rod is arranged in the mounting hole, penetrates through the side wall of the guide seat and is inserted into the first horizontal sliding groove, so that the anti-falling stop block horizontally slides in the accommodating cavity and can slidably extend out of the first opening;

and the triggering device is used for driving the anti-falling stop block to horizontally slide.

The utility model has the advantages that: when the attached lifting scaffold falls downwards, the guide rail cross rod of the attached lifting scaffold starts the trigger device, the trigger device drives the anti-falling stop block to slide towards the first opening direction and stretch out of the guide seat, the other guide rail cross rod of the attached lifting scaffold is pressed on the extending part of the anti-falling stop block, the trigger device can not drive the anti-falling stop block to be recovered into the guide seat, the anti-falling stop block stops the other guide rail cross rod of the attached lifting scaffold to fall downwards, and the attached lifting scaffold stops falling. The utility model discloses an anti-falling device simple structure prevents weighing down the simple structure of dog and horizontal pole, and the connected mode of horizontal pole and guide is simple reliable, and each part is liable to change maintains the maintenance, prevents weighing down the assembly required precision of dog, horizontal pole and guide and hangs down for anti-falling device simple structure, assembly required precision reduces, reduces manufacturing cost.

As a further improvement of the above technical solution, the triggering device includes:

the trigger piece is rotatably connected in the accommodating cavity, the rotating axis of the trigger piece is parallel to the cross rod, the trigger piece is arranged below the anti-falling stop block and is L-shaped, the trigger piece comprises a first trigger end and a second trigger end, the first trigger end extends out of the first opening, and the second trigger end is in contact with the rear end of the anti-falling stop block;

and one end of the reset spring is connected with the inner wall of the rear end of the accommodating cavity, and the other end of the reset spring is connected with the rear end of the anti-falling check block.

When the attached lifting scaffold ascends, a guide rail cross rod of the attached lifting scaffold pushes a first trigger end upwards, a trigger piece rotates reversely, a second trigger end is far away from an anti-falling stop block, and the anti-falling stop block is static; when the attached lifting scaffold descends normally, a guide rail cross rod of the attached lifting scaffold pushes a first trigger end downwards, a trigger piece rotates forwards, a second trigger end pushes an anti-falling stop block to slide towards a first opening, the anti-falling stop block extends out of a guide seat, the descending speed of the attached lifting scaffold is slow, the other guide rail cross rod of the attached lifting scaffold is not contacted with the anti-falling stop block, a reset spring pulls the anti-falling stop block to be recovered into the guide seat, and the attached lifting scaffold continues to descend normally; when the attached lifting scaffold falls downwards, the falling speed of the attached lifting scaffold is high, a guide rail cross rod of the attached lifting scaffold pushes a first trigger end, a trigger piece rotates in the forward direction, a second trigger end pushes an anti-falling stop block to slide towards a first opening, the anti-falling stop block stretches out of a guide seat, another guide rail cross rod of the attached lifting scaffold is contacted with the anti-falling stop block, a reset spring does not pull the anti-falling stop block to be completely recovered into the guide seat, another guide rail cross rod of the attached lifting scaffold is pressed on the extending part of the anti-falling stop block, the trigger device can not drive the anti-falling stop block to be recovered into the guide seat, the part of the anti-falling stop block extending out of the guide seat blocks another guide rail cross rod of the attached lifting scaffold to fall down, and the attached lifting scaffold. The trigger device is composed of simple mechanical components, has simple and reliable structure and low assembly precision requirement, and is beneficial to reducing the manufacturing cost.

As a further improvement of the technical scheme, a driving block is arranged at the bottom of the anti-falling block and vertically protrudes out of the bottom surface of the anti-falling block, and the second trigger end is in contact with the rear end of the driving block.

Set up the drive block bottom preventing weighing down the dog, the second triggers end and drive block rear end contact, and the second triggers the end and promotes the drive block and make preventing weighing down the dog and slide to first opening, reduces the length of triggering the piece, promotes the shock resistance who triggers the piece, improves anti-falling device's reliability, reduces the manufacturing material that triggers a needs, reduces manufacturing cost.

As a further improvement of the above technical solution, the mounting holes penetrate through both side walls of the guide seat, the cross bar penetrates through the accommodating cavity, both ends of the cross bar are detachably connected in the mounting holes, the first horizontal sliding groove is a long groove hole penetrating through the side surface of the anti-falling stopper, and the cross bar penetrates through the first horizontal sliding groove.

The cross rod is detachably connected with the guide seat, and the guide seat, the cross rod and the anti-falling stop block can be separated by taking out the cross rod, so that the anti-falling device is more convenient and faster to detach, install, replace and maintain; the first horizontal chute is a long slotted hole which runs through the side face of the anti-falling stop block, the cross rod runs through the whole anti-falling stop block, the contact area of the cross rod and the anti-falling stop block is increased, and the two ends of the cross rod are arranged in the mounting holes on the two sides of the guide seat, so that the anti-impact capacity of the anti-falling device is improved, and the reliability of the anti-falling device is improved.

As a further improvement of the above technical scheme, a second horizontal sliding groove is further arranged in the accommodating cavity, the second horizontal sliding groove is parallel to the first horizontal sliding groove, and a sliding block is further arranged on the side surface of the anti-falling stop block and is arranged in the second horizontal sliding groove in a sliding manner.

The slider of preventing weighing down the dog slides and sets up in the horizontal spout of second, and the slider has the bearing and plays the effect of preventing weighing down the dog for prevent weighing down the dog and have fault-tolerant space with the assembly of guide, anti-falling device assembly required precision reduces, reduces manufacturing cost.

As a further improvement of the technical scheme, the cross bar is cylindrical in shape.

The appearance of the cross rod is a cylinder, the contact mode of the cross rod and the first horizontal sliding groove on the anti-falling stop block is line contact, the material consumption of the cross rod is saved, meanwhile, the friction force between the cross rod and the anti-falling stop block is reduced, the anti-falling stop block slides more smoothly, the response speed of the anti-falling device is improved, and the reliability of the anti-falling device is improved.

As a further improvement of the technical scheme, the top of the front end of the anti-falling stop block is provided with a groove.

When the attached lifting scaffold abnormally falls, the groove at the top of the front end of the anti-falling check block is buckled on the guide rail cross rod of the attached lifting scaffold, the anti-falling check block and the guide rail cross rod of the attached lifting scaffold form surface contact, the friction force between the anti-falling check block and the guide rail cross rod of the attached lifting scaffold is increased, the mutual sliding between the anti-falling check block and the guide rail cross rod of the attached lifting scaffold is reduced, and the reliability of the anti-falling device is favorably improved.

As a further improvement of the technical scheme, the anti-falling device further comprises an anti-falling support frame, wherein the anti-falling support frame is rotationally connected to the upper end face of the guide seat, the rotation axis of the anti-falling support frame is parallel to the cross rod, and the anti-falling support frame is provided with a clamping groove seat.

When the attached lifting scaffold needs to normally ascend and descend, the anti-falling support frame is rotated to the rear end, and the anti-falling support frame cannot block the attached lifting scaffold to normally ascend and descend; when the attached lifting scaffold does not need to lift, the anti-falling support frame is rotated to the front end, the clamping groove seat can be buckled on the guide rail cross rod of the attached lifting scaffold, the anti-falling support frame forms a diagonal brace to support the guide rail cross rod of the attached lifting scaffold, so that the anti-falling support frame also has an anti-falling function, the anti-falling support frame can share the pressure of the attached lifting scaffold borne by the anti-falling stop block as a second guarantee of the anti-falling device, and the reliability of the anti-falling device is improved.

Drawings

The present invention will be further explained with reference to the drawings and examples;

FIG. 1 is an isometric view of an embodiment of a fall arrest device provided in the present invention;

FIG. 2 is a front view of an embodiment of the fall arrest device provided by the present invention;

FIG. 3 is a sectional view A-A of FIG. 2;

fig. 4 is a left side view of an embodiment of the fall preventing device provided by the present invention.

100. Guide seat, 101, holding chamber, 102, horizontal pole, 103, first opening, 104, second opening, 105, second horizontal spout, 106, reset spring, 107, mounting hole, 200, prevent weighing down the dog, 201, first horizontal spout, 202, the slider, 203, the drive block, 204, the recess, 300, trigger piece, 301, first trigger end, 302, the second trigger end, 400, prevent weighing down the strut, 401, draw-in groove seat, 500, guide assembly.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the positional descriptions, such as the positional or orientational relationships indicated by the front, rear, left, right, etc., are based on the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, taking the anti-falling device in which the front end of the guide seat 100 is connected to the guide assembly 500 as an example, the anti-falling device of the present invention is made as follows:

the rear end of the guide seat 100 is fixedly connected with a building wall, the front end of the guide seat 100 is connected with a guide assembly 500, and the guide assembly 500 is used for lifting and guiding the attached lifting scaffold guide rail.

The guide seat 100 can be formed by welding and combining plates, the guide seat 100 can also be formed by integral forming, the inside of the guide seat 100 is provided with an accommodating cavity 101, the front end surface of the guide seat 100 is provided with a first opening 103, the bottom surface of the guide seat 100 is provided with a second opening 104, two side surfaces of the guide seat 100 are provided with through mounting holes 107, the mounting holes 107 penetrate through the accommodating cavity 101, the inner wall of the accommodating cavity 101 is provided with a second horizontal sliding groove 105, and the second horizontal sliding groove 105 is arranged along the front and back horizontal directions.

The anti-falling stopper 200 is arranged in the accommodating cavity 101, a first through horizontal chute 201 is arranged on the side surface of the anti-falling stopper 200, the first horizontal chute 201 is a kidney-shaped through hole, the first horizontal chute 201 is arranged along the front and back horizontal directions, the first horizontal chute 201 is parallel to the second horizontal chute 105, the cross rod 102 is a cylinder, one end of the cross rod 102 is inserted into the mounting hole 107 on the side surface of the accommodating cavity 101, the cross rod 102 passes through the first horizontal chute 201 on the side surface of the anti-falling stopper 200, the other end of the cross rod 102 is inserted into the mounting hole 107 on the other side surface of the accommodating cavity 101, the cross rod 102 is detachably connected with the mounting hole 107, for example, screw rods are connected to the two ends of the cross rod 102, the screw rods at the two ends of the cross rod 102 penetrate through the mounting holes 107 on the two sides, and are locked by bolts matched with the screw threads on, the fall arrest block 200 can extend out of the first opening 103. The shape of the cross bar 102 can be a polygonal column, a cylinder or a rod-shaped object, the mounting hole 107 matched with the cross bar 102 can also be determined according to the shape of the cross bar 102, in this embodiment, the cross bar 102 is taken as a cylinder as an example, the cross bar 102 is matched with the mounting hole 107 on the side surface of the accommodating cavity 101, the cross bar 102 can be directly inserted into the mounting hole 107, or a bearing is mounted on the mounting hole 107, and the cross bar 102 is mounted in the bearing, so that the cross bar 102 can rotate, thereby reducing the relative friction between the cross bar 102 and the anti-falling stopper 200.

The side face of the top end of the anti-falling stopper 200 is provided with a sliding block 202, the sliding block 202 is matched with the second horizontal chute 105, the sliding block 202 is arranged in the second horizontal chute 105 in a sliding manner, the sliding block 202 and the cross rod 102 jointly support the anti-falling stopper 200, the top of the front end of the anti-falling stopper 200 is provided with a groove 204, the groove 204 is matched with the guide rail cross rod of the attached lifting scaffold, the bottom of the anti-falling stopper 200 is provided with a driving block 203, and the driving block 203 vertically protrudes out of the bottom face.

The trigger device can drive the anti-falling block 200 to horizontally slide towards the first opening 103 and make the anti-falling block 200 extend out of the first opening 103, and the trigger device can also drive the anti-falling block 200 to horizontally slide towards the rear end to recover the anti-falling block 200 into the guide seat 100. The triggering device can be electric, for example, an electric lead screw is installed in the accommodating cavity 101, the electric lead screw is connected with the anti-falling stopper 200, a speed sensor is arranged on the guide seat 100, an upper speed limit is arranged in the speed sensor, when the speed sensor senses that the falling speed of the guide rail cross bar of the attached lifting scaffold is greater than the upper speed limit, the speed sensor sends a signal to the motor controller, and the motor controller controls the electric lead screw to push the anti-falling stopper 200 to slide towards the first opening 103 and extend out of the guide seat 100, so as to prevent the attached lifting scaffold from continuously falling; the triggering device may also be mechanical, for example, a return spring 106 and a triggering element 300 are disposed in the accommodating cavity 101, one end of the return spring 106 is connected to the rear end of the anti-falling stopper 200, the other end of the return spring 106 is connected to the inner wall of the rear end of the accommodating cavity 101, the return spring 106 is an extension spring, the return spring 106 can pull the anti-falling stopper 200 to slide towards the rear end, the triggering element 300 is rotatably connected to the bottom of the guide 100, the rotation axis of the triggering element 300 is parallel to the cross bar 102, the triggering element 300 is in an "L" shape, the triggering element 300 is formed by combining and connecting a first triggering end 301 and a second triggering end 302 which are perpendicular to each other, a through hole is disposed on the bottom of the guide 100, a pin hole matched with the through hole on the triggering element 300 is disposed on the bottom of the guide 100, the guide 100 and the triggering element 300 are connected by a pin, the first triggering end 301 is disposed outside the accommodating cavity 101, the first triggering, the second trigger end 302 is disposed inside the accommodating cavity 101, the weight of the first trigger end 301 is greater than that of the second trigger end 302, so that the second trigger end 302 is lifted by the first trigger end 301, the second trigger end 302 contacts with the rear end of the driving block 203 at the bottom of the anti-falling block 200, when the first trigger end 301 is pushed downward, the trigger 300 rotates in the forward direction, the second trigger end 302 pushes the driving block 203 to slide forward, that is, the second trigger end 302 pushes the anti-falling block 200 to slide toward the first opening 103.

The upper end face of the guide seat 100 is hinged with an anti-falling support frame 400, the rotation axis of the anti-falling support frame 400 is parallel to the cross rod 102, the top of the anti-falling support frame 400 is provided with a clamping groove seat 401, the clamping groove seat 401 is provided with an arc groove matched with the guide rail cross rod of the attached lifting scaffold, and the arc groove of the clamping groove seat 401 is opened upwards. When the attached lifting scaffold does not need to be lifted, the anti-falling support frame 400 rotates forwards, the arc groove of the clamping groove seat 401 is clamped on the guide rail cross rod of the attached lifting scaffold, the anti-falling support frame 400 also has an anti-falling function at the moment, and the anti-falling support frame 400 is used as a second guarantee of the anti-falling device.

Before the attached lifting scaffold needs to normally lift, the anti-falling support frame 400 is reversely rotated, the arc groove of the clamping groove seat 401 leaves the guide rail cross rod of the attached lifting scaffold, and the anti-falling support frame 400 cannot hinder the normal lifting action of the attached lifting scaffold. When the attached lifting scaffold normally rises, the guide rail cross rod of the attached lifting scaffold pushes the first triggering end 301 upwards, the triggering piece 300 reversely rotates, the second triggering end 302 is far away from the driving block 203 of the anti-falling stop 200, the anti-falling stop 200 is static and motionless, and the attached lifting scaffold continues to normally rise. When the attached lifting scaffold needs to normally descend, the guide rail cross rod of the attached lifting scaffold pushes the first trigger end 301 downwards, the trigger piece 300 rotates forwards, the second trigger end 302 pushes the driving block 203 forwards, the driving block 203 drives the anti-falling block 200 to slide towards the first opening 103, the anti-falling block 200 extends out of the guide seat 100, because the descending speed of the attached lifting scaffold is slow, the anti-falling block 200 is pulled by the reset spring 106 to slide backwards, the descending speed of the attached lifting scaffold is smaller than the sliding speed of the anti-falling block 200 pulled by the reset spring 106, when another guide rail cross rod of the attached lifting scaffold descends above the anti-falling block 200, the anti-falling block 200 is already recovered inside the guide seat 100, and the attached lifting scaffold continues to normally descend.

When the attached lifting scaffold abnormally drops, the guide rail cross rod of the attached lifting scaffold pushes the first triggering end 301 downwards, the triggering piece 300 rotates forwards, the second triggering end 302 pushes the driving block 203 forwards, the driving block 203 drives the anti-falling block 200 to slide towards the first opening 103, the anti-falling block 200 extends out of the guide seat 100, because the descending speed of the attached lifting scaffold is faster and is greater than the sliding speed of the return spring 106 pulling the anti-falling stop 200, when another guide rail cross rod of the attached lifting scaffold descends above the anti-falling stop 200, the anti-falling stop 200 also extends out of the guide seat 100, the other guide rail cross rod of the attached lifting scaffold is stopped by the anti-falling stop 200, the other guide rail cross rod of the attached lifting scaffold is pressed on the groove 204 on the top surface of the front end of the anti-falling stop 200, and the attached lifting scaffold stops falling. If the arc groove of the slot seat 401 on the anti-falling support frame 400 is still buckled on the rail cross rod of the attached lifting scaffold at the moment, the anti-falling support frame 400 supports and prevents the rail cross rod of the attached lifting scaffold from falling downwards.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a falling-preventing device which characterized in that: the method comprises the following steps:

the guide seat (100) is provided with an accommodating cavity (101), a through mounting hole (107) is formed in the side wall of the guide seat (100), and a first opening (103) is formed in the front end of the guide seat (100);

the anti-falling stopper (200) is arranged in the accommodating cavity (101), the top surface of the anti-falling stopper (200) is abutted against the inner wall of the top of the accommodating cavity (101), and a first horizontal sliding groove (201) is arranged on the side surface of the anti-falling stopper (200);

the cross rod (102) is arranged in the mounting hole (107), the cross rod (102) penetrates through the side wall of the guide seat (100), the cross rod (102) is inserted into the first horizontal sliding groove (201), so that the anti-falling stop block (200) can horizontally slide in the accommodating cavity (101), and the anti-falling stop block (200) can slidably extend out of the first opening (103);

the triggering device is used for driving the anti-falling block (200) to horizontally slide.

2. The fall arrest device according to claim 1, wherein: the triggering device comprises:

the trigger piece (300) is rotatably connected in the accommodating cavity (101), the rotation axis of the trigger piece (300) is parallel to the cross rod (102), the trigger piece (300) is arranged below the anti-falling block (200), the trigger piece (300) is L-shaped, the trigger piece (300) comprises a first trigger end (301) and a second trigger end (302), the first trigger end (301) extends out of the first opening (103), and the second trigger end (302) is contacted with the rear end of the anti-falling block (200);

one end of the reset spring (106) is connected with the inner wall of the rear end of the accommodating cavity (101), and the other end of the reset spring (106) is connected with the rear end of the anti-falling stopper (200).

3. The fall arrest device according to claim 2, wherein: the bottom of the anti-falling block (200) is provided with a driving block (203), the driving block (203) vertically protrudes out of the bottom surface of the anti-falling block (200), and the second trigger end (302) is in contact with the rear end of the driving block (203).

4. The fall arrest device according to claim 1, wherein: the mounting hole (107) penetrates through two side walls of the guide seat (100), the cross rod (102) penetrates through the accommodating cavity (101), two ends of the cross rod (102) are detachably connected to the mounting hole (107), the first horizontal sliding groove (201) is a long groove hole penetrating through the side face of the anti-falling stop block (200), and the cross rod (102) penetrates through the first horizontal sliding groove (201).

5. The fall arrest device according to claim 1, wherein: the anti-falling device is characterized in that a second horizontal sliding groove (105) is further formed in the accommodating cavity (101), the second horizontal sliding groove (105) is parallel to the first horizontal sliding groove (201), a sliding block (202) is further arranged on the side face of the anti-falling stop block (200), and the sliding block (202) is slidably arranged in the second horizontal sliding groove (105).

6. The fall arrest device according to claim 1, wherein: the cross bar (102) is cylindrical in shape.

7. The fall arrest device according to claim 1, wherein: a groove (204) is arranged at the top of the front end of the anti-falling stop block (200).

8. The fall arrest device according to any one of claims 1 to 7, wherein: still including preventing weighing down strut (400), prevent weighing down strut (400) rotate connect in the up end of guide (100), prevent weighing down strut (400) axis of rotation with horizontal pole (102) are parallel, prevent weighing down strut (400) and be provided with draw-in groove seat (401).