Disclosure of Invention
This patent is based on the above-mentioned demand of prior art and proposes, and the technical problem that this patent will be solved is to provide a rope grab to realize firm rope grab and be convenient for operate through simple structure.
In order to solve the above-mentioned problem, the technical scheme that this patent provided includes:
a rope grab comprises a first fixing plate and a second fixing plate which are arranged in parallel; the front end of the first fixing plate is provided with a first U-shaped bend, the first U-shaped bend extends from the front end of the first fixing plate, and the bent end is opposite to and arranged at intervals with the front end of the second fixing plate; the interval is formed into a first vertical steel wire rope mounting groove; the top end of the second fixed plate is provided with a reinforcing plate, the reinforcing plate is rotatably arranged on the second fixed plate through a rotating shaft, and the front end and the rear end of the reinforcing plate are respectively arranged on two sides of the rotating shaft to form a lever taking the rotating shaft as a fulcrum; the front end of the lever is provided with a second U-shaped bend, the second U-shaped bend extends forwards from the second fixing plate to the front of the front end face of the first U-shaped bend, and the second U-shaped bend is arranged opposite to the first fixing plate after bending; the rear end of the lever is provided with an operation block; the reinforcing plate is further provided with a first elastic biasing element, the first elastic biasing element keeps the operation block at a first position, and the operation block can be operated to place the reinforcing plate at a second position after overcoming the keeping force of the elastic biasing element; when the first U-shaped bend is at the first position, one side of the second U-shaped bend, which is close to the second fixing plate, seals the first steel wire rope mounting groove; in the second position, the lower edge of the lower end of the reinforcing plate is spaced from the upper edge of the U-shaped bend of the first fixing plate in the up-down direction by a distance which forms a second steel wire rope mounting groove which is transversely arranged, and the second steel wire rope mounting groove is communicated with and intersected with the first steel wire rope mounting groove; the middle part of the spanner rod is rotatably arranged between the first fixing plate and the second fixing plate through a pivot; the end part of the rear side of the wrenching rod is connected with a safety anti-falling garment worn by a person, and the front end of the wrenching rod is provided with locking teeth.
Preferably, the first spring bias member is a first torsion spring disposed on the shaft to maintain the reinforcing plate in the first position.
Preferably, a first roller is arranged between two side walls of the first U-shaped bend; a second roller is also arranged between the two side walls of the second U-shaped bend; when the reinforcing plate is in the first position, the first roller is in contact with the front end face of the steel wire rope, and the second roller is in contact with the rear end face of the steel wire rope.
Preferably, a second torsion spring is provided on the pivot shaft of the trigger lever, the second torsion spring maintaining the locking tooth in engagement with the wire rope.
Through above-mentioned scheme, the rope grab of this patent can realize single hand operation to have dual U type curved additional strengthening in the atress position of key, improved convenience and the security of operation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention.
In the description of the present invention, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance between such terms as the objects being modified.
As shown in fig. 1, in this embodiment, a rope grab 1 is provided, which includes two fixing plates disposed parallel to each other, a first fixing plate 2 and a second fixing plate 3, respectively, with a space formed between the two mutually parallel fixing plates, in which other parts of the rope grab can be disposed.
As shown in fig. 1, in this embodiment, the front end of the space is blocked by a first U-shaped bend 4 at the front end of the second fixing plate 2, the first U-shaped bend extends from the front end of the first fixing plate 2, and the bent end is spaced from and opposite to the front end of the second fixing plate, and the space is formed into a vertical first wire rope installation groove 5. Thus, after the steel wire rope enters the space between the two fixing plates from the first steel wire rope mounting groove, the steel wire rope cannot fall out from the front end due to the shielding effect of the U-shaped bend.
Preferably, a first roller 6 is arranged between two side walls of the lower end of the first U-shaped bend; the first roller 6 is used to guide the movement between the rope grab and the wire rope at a first point of the wire rope and to reduce the friction between the two after the wire rope is placed in the space between the two fixing plates.
A plurality of fixing rivets are arranged between the rear ends of the first fixing plate 2 and the second fixing plate 3, one ends of the fixing rivets are connected with the first fixing plate, the other ends of the fixing rivets are connected with the second fixing plate, the fixing rivets are used for fixing the two fixing plates and blocking the steel wire ropes, and other parts can be installed on the rivets.
The top of the second fixing plate is provided with a reinforcing plate 7, as shown in fig. 3, the reinforcing plate 7 is rotatably disposed on the second fixing plate 3 through a pin 8, and the upper end and the lower end of the reinforcing plate are respectively disposed on two sides of the pin 8, thus forming a lever taking the pin as a fulcrum. The front end of the reinforcing plate 7 is provided with a second U-shaped bend 10, the rear end of the reinforcing plate is provided with an operating block 9, the pin 8 is provided with a first torsion spring 11, and the first torsion spring 11 plays a role in keeping the reinforcing plate in a first position. The second U-bend 10 and the operating 9 block each extend from the second fixing plate 3 to the first fixing plate 2.
Based on the lever formed by the reinforcing plate 7 described above, the reinforcing plate can be rotated from the first position to the second position against the biasing force of the torsion spring when the operating lever is pressed. In the first position, the second U-bend 10 closes the first wire rope installation groove 5 on the side of the second fixing plate, so that when the reinforcing plate is in the first position, the wire rope entering the space between the two fixing plates can not be pulled out of the wire rope installation groove. In the first position, the operation block 9 is located at the top end of the fixing plate, so that an operator can operate the operation block by using one thumb, thereby bringing great convenience. When the rope grab is in the first position, one side of the second U-shaped bend extends forwards from the reinforcing plate and at least partially surrounds the first U-shaped bend outside the front end face of the first U-shaped bend, so that two U-shaped bends are formed to be overlapped, the strength of the contact position of the upper end of the rope grab with the steel wire rope when being stressed is improved, the possibility of deformation and distortion is reduced, and the safety is improved.
Preferably, a second roller 12 is further disposed between two side walls of the second U-shaped bend, when the reinforcing plate is in the first position, the second roller 12 is disposed up and down with the first roller 6, the first roller contacts with the front end surface of the steel wire rope, and the second roller contacts with the rear end surface of the steel wire rope. The second roller is similar to the first roller in guiding movement between the rope grab and the wire rope at a second point of the wire rope and reducing friction therebetween; meanwhile, as shown in fig. 8, the two rollers are arranged in tandem, so that the shaking of the steel wire rope in the rope grab can be avoided.
As shown in fig. 4 and 5, the second roller may be disposed on a roller shaft 13, where the roller shaft extends from the second fixing plate 3 to the first fixing plate 2, and one side of the roller shaft is close to the second fixing plate, and the other side of the roller shaft is locked by a screw and a flat pad, so that the upper end of the reinforcing plate may be made into a structure with only one side having a plate, simplifying the structure, and facilitating the operation of the operator on the operation block.
The operator presses the upper end of the reinforcing plate downwards by pressing the operation block 9, overcomes the elasticity of the first torsion spring, and then lifts the lower end of the reinforcing plate based on the lever action, and at this time, the reinforcing plate 7 is in the second position. When the reinforcing plate 7 is in the second position, as shown in fig. 9, the lower edge of the lower end of the reinforcing plate is spaced from the top end of the U-shaped bend of the first fixing plate by a distance in the up-down direction, and a second wire rope mounting groove 14 is formed in the distance, and the second wire rope mounting groove 14 is communicated with and intersects the first wire rope mounting groove 5. At this time, if the rope grab is to be mounted on the steel wire rope, the steel wire rope is first implanted into the second steel wire rope mounting groove 14, then the rope grab is rotated anticlockwise by 90 degrees, the steel wire rope is immersed into the first steel wire rope mounting groove 5, and then the operation block is released to enable the reinforcing plate 7 to return to the original position, so that the installation with the steel wire rope can be completed. If the rope grab is to be separated from the steel wire rope, pressing an operation block 9 of the reinforcing plate 7 to open the second steel wire rope installation groove; then the rope grab is rotated to enable the steel wire rope to be separated from the groove of the first steel wire rope installation groove and enter the second steel wire rope installation groove; and then horizontally pulling the rope grab to ensure that the steel wire rope is loosened and moved out of the second steel wire rope mounting groove, and thus the separation between the steel wire rope and the rope grab can be completed. These operations can be completed by pressing the operation block with one hand while pressing the operation block with the one hand for rotary flat pulling, that is, one-hand operation is realized, and great operation convenience is achieved.
The rope grab further comprises a spanner 15, the middle part of the spanner 15 is rotatably arranged between the first fixing plate 2 and the second fixing plate 3 through a pivot, one end of the pivot of the spanner 15 is connected with the first fixing plate, the other end of the pivot is connected with the second fixing plate, the spanner is formed into a lever taking the pivot as a fulcrum, the lever extends along the front-back direction, the end part of the rear side of the lever is connected with a safety anti-falling garment worn by a person, and locking teeth are arranged at the front end of the spanner and meshed with a steel wire rope to fix the anti-falling device with the steel wire rope, so that the falling of the person is avoided. A second torsion spring 16 is provided on the pivot of the trigger lever, which second torsion spring maintains the locking tooth in engagement with the wire rope.
In this embodiment, grab rope ware can use with the cooperation of falling prevention 8mm wire rope that accords with the standard, and wire rope is the atress key with grab the upper end that rope ware is connected, plays the effect of hanging the point when the atress, adopts above-mentioned technical scheme to consolidate the top through the curved effect of two superimposed U types and hangs the point. The upper guide wheel and the lower guide wheel are auxiliary elements, so that the upper guide wheel and the lower guide wheel can smoothly slide on the steel wire rope and keep the stability of the steel wire rope. The reinforcing plate is used for reinforcing the fixing plate when a user falls, so that the impact resistance of the fixing plate is improved, and the fixing plate has the function of preventing the fixing plate from being separated from the steel wire rope. The spanner rod is a key point for pressing the steel wire rope to generate locking anti-falling effect when a user falls. The torsion springs at the spanner rod and the reinforcing plate enable the rope grab to be in a locking state at any time.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.