CN112875462A

CN112875462A - Cable protection device

Info

Publication number: CN112875462A
Application number: CN202110325764.8A
Authority: CN
Inventors: 汤应程; 许勇胜; 方明; 吴超; 文朝辉; 李湘民; 黄保忠
Original assignee: JOINHAND CONSTRUCTION MACHINERY CO Ltd
Current assignee: JOINHAND CONSTRUCTION MACHINERY CO Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-06-01

Abstract

The invention discloses a cable protection device, which comprises a main frame, a pull rod, a limiting device, a spring and a proximity switch, wherein the main frame comprises a vertical rod, an upper mounting plate, a lower mounting plate and a proximity switch mounting plate, the upper mounting plate and the lower mounting plate are vertically arranged and connected to the vertical rod, the proximity switch mounting plate is connected to the vertical rod, the pull rod penetrates through the lower mounting plate and then is connected with the limiting device, a compression spring is sleeved outside the pull rod between the limiting device and the lower mounting plate, the upper end of the pull rod is connected with an extension spring, the other end of the extension spring is connected to the upper mounting plate, and the proximity switch is mounted on the proximity switch mounting plate. The condition that the cable is hung on the foreign matter can be detected in real time, the suspension cage is controlled to stop in time, and the problems of cable breakage, cable protection frame damage, abnormal power failure of the suspension cage and the like are solved.

Description

Cable protection device

Technical Field

The invention belongs to the field of matching equipment of construction elevators, and particularly relates to a cable protection device.

Background

The construction elevator is generally used in building construction and is responsible for vertical transportation of people and goods. The existing construction elevator generally adopts a cable for power supply, and the cable for power supply has two modes of a cable drum and a cable pulley. One end of the power supply cable is fixed on the suspension cage through a cable arm and moves up and down along with the suspension cage; the other end is placed in a ground cable drum or runs along with a cable pulley; the middle cable is freely suspended in the air and protected by a cable guard. The condition that the cable runs smoothly in the middle of the operation of the elevator, a cable protection frame, a building scaffold and the like are hung, a driver can hardly find problems in the cage in time, and the continuous operation of the suspension cage causes accidents such as cable breaking, cable protection frame damage, abnormal power failure of the suspension cage and the like.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the cable protection device which can detect the condition that a cable catches a foreign body in real time, timely control the suspension cage to stop and solve the problems of cable breakage, cable protection frame damage, abnormal power failure of the suspension cage and the like.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a cable protection device, includes body frame, pull rod, stop device, spring and proximity switch, the body frame includes pole setting, last mounting panel, lower mounting panel and proximity switch mounting panel, and the aforesaid is gone up the mounting panel and is the connection of arranging about the mounting panel is in the pole setting down, and the proximity switch mounting panel is connected in the pole setting, the pull rod passes down behind the mounting panel to be connected with stop device to establish compression spring at stop device and the pull rod overcoat between the mounting panel down, the upper end of the aforesaid pull rod is connected with extension spring, and this extension spring's the other end is connected to the mounting panel, proximity switch installs on the proximity switch mounting panel.

In the above technical scheme, stop device includes mounting panel, locating plate and limiting plate, the limiting plate includes last limiting plate and lower limiting plate, goes up limiting plate and lower limiting plate and connects on the mounting panel to adjustable position, the locating plate is connected on the mounting panel, is equipped with the hole site that is used for being connected with the pull rod on the locating plate to be equipped with the protrusion piece on the locating plate, be equipped with in the pole setting with protrusion piece complex waist round hole.

In the technical scheme, the mounting plate is provided with two waist-round holes which are arranged up and down, and the upper limiting plate and the lower limiting plate are connected with the mounting plate through the waist-round holes, bolts and nuts.

In the technical scheme, an adjusting rod is arranged between the extension spring and the upper mounting plate, one end of the adjusting rod is connected with the extension spring, the other end of the adjusting rod penetrates through the upper mounting plate, threads are arranged at the joint of the adjusting rod and the upper mounting plate, and the position of the adjusting rod is fixed through nuts.

The invention has the beneficial effects that: when the cable runs abnormally, the tension of the pull rod changes, the limiting device moves upwards or downwards to exceed the design range, the upper limiting plate or the lower limiting plate triggers the proximity switch, and the cage stops running immediately, so that accidents are prevented; the comprehensive rigidity change of the cable is realized by installing two springs with different rigidities, and when the cable bears a large tensile force, the compression spring with large rigidity is mainly used, so that the movement distance of the pull rod is reduced, and the overall length of the device is reduced; when bearing the little pulling force of cable, the stay cord spring that rigidity is little works, improves its job sensitivity.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the main frame in fig. 1.

Fig. 3 is a schematic structural view of the limiting device in fig. 1.

Fig. 4 is a schematic view of the installation of the present invention on an elevator.

Fig. 5 is a schematic view of the installation of the present invention with a cable arm and a cable.

Wherein: 11. the main frame, 12, pull rod, 13, stop device, 14, extension spring, 15, compression spring, 16, regulation pole, 17, proximity switch, 18, cage, 19, cable arm, 20, cable, 21, this device, 111, pole setting, 112, last mounting panel, 113, lower mounting panel, 114, proximity switch mounting panel, 131, mounting panel, 132, locating plate, 133, go up the limiting plate, 134, lower limiting plate.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

As shown in fig. 1 and 2, the cable protection device includes a main frame 11, a pull rod 12, a position limiting device 13, a spring and a proximity switch 17, wherein the main frame 11 includes a vertical rod 111, an upper mounting plate 112, a lower mounting plate 113 and a proximity switch mounting plate 114, the upper mounting plate 112 and the lower mounting plate 113 are connected to the vertical rod 111 in an up-down arrangement, the proximity switch mounting plate 114 is connected to the vertical rod 111, the pull rod 12 passes through the lower mounting plate 113 and then is connected to the position limiting device 13, a compression spring 15 is sleeved on the pull rod between the position limiting device 13 and the lower mounting plate 113, an upper end of the pull rod 12 is connected to a tension spring 14, the other end of the tension spring 14 is connected to the upper mounting plate 112, and the proximity switch 17 is mounted on the proximity switch mounting plate.

In the above technical scheme, stop device 13 includes mounting panel 131, locating plate 132 and limiting plate, the limiting plate includes limiting plate 133 and limiting plate 134 down, goes up the limiting plate and connects on mounting panel 131 with limiting plate down to adjustable position, locating plate 132 is connected on mounting panel 131, is equipped with the hole site that is used for being connected with pull rod 12 on locating plate 132 to be equipped with the protrusion piece on locating plate 132, be equipped with on pole setting 12 with protrusion piece complex waist round hole. During assembly, the protruding block is inserted into the waist circular hole, so that the running track of the limiting device can be limited and the limiting device can not rotate randomly.

In the above technical solution, the mounting plate 131 is provided with two waist-round holes arranged up and down, and the upper limiting plate 133 and the lower limiting plate 134 are connected with the mounting plate 131 through the waist-round holes, bolts and nuts.

In the above technical solution, an adjusting rod 16 is arranged between the extension spring 14 and the upper mounting plate 112, one end of the adjusting rod 16 is connected with the extension spring 14, the other end of the adjusting rod 16 penetrates through the upper mounting plate 112, a connection part of the adjusting rod 16 and the upper mounting plate is provided with a thread, and the position of the adjusting rod 16 is fixed by a nut. The adjustment lever 16 can change the force of the extension spring.

The device is arranged on a cable fixing arm (or a device with the same function) of a lifting cage of the elevator, a main frame at the upper end is fixed with the cable arm, and a pull rod at the lower end is fixed with the cable. The pull rod is pulled downwards by the cable, and the proximity switch is arranged between the upper limiting plate and the lower limiting plate under the normal working condition; when the cable operation abnormal conditions appear, the pull rod atress changes, and stop device moves upward or down and surpasss the design range, and upper or lower limiting plate triggers proximity switch, and the cage stops to move immediately, prevents to cause the accident.

The comprehensive rigidity change is realized by installing two springs with different rigidities. When bearing the large pulling force of the cable, the compression spring with large rigidity is taken as the main part, so that the movement distance of the pull rod is reduced, and the overall length of the device is reduced; when bearing the little pulling force of cable, the stay cord spring that rigidity is little works, improves its job sensitivity.

As shown in fig. 4 and 5, the apparatus 21 of the present invention is generally mounted on the cable arm 19 of the elevator cage 18, the upper main frame 11 being secured to the cable arm 19, and the lower tension rod 12 being secured to the cable 20: when the elevator cage normally operates, the change of the downward tension of the cable 20 on the pull rod 12 is set as a normal working range, and the stress of the extension spring 14 and the compression spring 15 is adjusted; the positions of the upper limiting plate and the lower limiting plate are adjusted to ensure that the proximity switch 17 is not triggered between the upper limiting plate and the lower limiting plate; when the cable 20 is hung on a cable protection frame or other components, the pulling force of the cable 20 on the pull rod 12 exceeds the set normal working range, the limiting device 13 moves upwards or downwards to exceed the set range to trigger the proximity switch 17, and the cage 18 stops running immediately.

The adjusting rod 16 is provided with threads, and the stress of the extension spring 14 can be adjusted through a nut. The change of the comprehensive rigidity of the pull rod 12 is realized by setting the rigidity and the stress state of the extension spring 14 and the compression spring 15. When the cable 20 normally runs, the tension change range of the pull rod 12 is large, and the comprehensive rigidity of the pull rod is fixed, the problems that the rigidity is large and the pull rod is not sensitive or the rigidity is small and the device is too long exist. When bearing the large pulling force of the cable 20, the device takes the compression spring 15 with large rigidity as the main part to reduce the movement length of the pull rod 12; when the cable 20 is subjected to a small tensile force, the pull rope spring 14 with small rigidity works, and the working sensitivity is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention 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 invention are included in the scope of the present invention.

Claims

1. A cable protection device is characterized in that: including body frame, pull rod, stop device, spring and proximity switch, the body frame includes pole setting, last mounting panel, lower mounting panel and proximity switch mounting panel, and the aforesaid is gone up the mounting panel and is the connection of arranging about the mounting panel down in the pole setting, and the proximity switch mounting panel is connected in the pole setting, the pull rod passes down the mounting panel after be connected with stop device to establish compression spring at stop device and the pull rod overcoat between the mounting panel down, the upper end of aforesaid pull rod is connected with extension spring, and this extension spring's the other end is connected to the mounting panel, proximity switch installs on the proximity switch mounting panel.

2. The cable protection device of claim 1, wherein: stop device includes mounting panel, locating plate and limiting plate, the limiting plate includes spacing board and lower limiting plate, goes up the spacing board and connects on the mounting panel with lower limiting plate to adjustable position, the locating plate is connected on the mounting panel, is equipped with the hole site that is used for being connected with the pull rod on the locating plate to be equipped with the bulge piece on the locating plate, be equipped with in the pole setting with bulge piece complex waist round hole.

3. The cable protection device of claim 1, wherein: the mounting plate is provided with two waist round holes which are arranged up and down, and the upper limiting plate and the lower limiting plate are connected with the mounting plate through the waist round holes, bolts and nuts.

4. The cable protection device of claim 1, wherein: the adjusting rod is arranged between the extension spring and the upper mounting plate, one end of the adjusting rod is connected with the extension spring, the other end of the adjusting rod penetrates through the upper mounting plate, threads are arranged at the joint of the adjusting rod and the upper mounting plate, and the position of the adjusting rod is fixed through nuts.