Anti-falling pull rope optical switch

Abstract

The utility model relates to an anti-falling pull rope optical switch. The anti-falling pull rope optical switch comprises a mounting cavity formed by enclosing; the reset assembly is rotationally arranged in the mounting cavity and comprises a reset rod assembly and a cam arranged on the reset rod assembly; the pull rod assembly is rotationally arranged in the mounting cavity, the pull rod assembly comprises a pull rod assembly and a plugging seat arranged on the pull rod assembly, and shifting rods of the shifting forks are inserted into the corresponding water drop holes respectively; when the steel wire rope is subjected to external force, the pull rod assembly is driven, then the cam is driven by the shifting fork to swing so as to jack up the plunger of the light attenuation switch, changing light information is given to the light attenuation switch, and after the external force disappears, the light attenuation switch is restored to the initial state under the action of the spring of the reset rod assembly. The electric shock risk is reduced, the equipment safety is improved, a worker can manually give an alarm or automatically give an alarm when the steel wire rope is impacted, and the equipment better meets the actual use requirement.

Description

Technical Field

[0001] The present application relates to the technical field of belt conveyor conveying, and in particular to an anti-fall pull rope optical switch. Background Art

[0002] The pull-cord switch type alarm device is an emergency alarm device, which is usually used on belt conveyors for transporting materials in places such as mines, factories, warehouses, and logistics centers. It is used to trigger an alarm in an emergency, attract the attention of managers, and take corresponding measures to avoid danger and reduce the risk of possible personal injury or machine damage and production accidents. At present, the existing pull-cord switch type alarm device is usually composed of a pull cord, a sensor, a control circuit, and an alarm. When an emergency occurs, people can quickly pull the pull cord to trigger the sensor, and the control circuit will immediately start the alarm to sound an alarm after receiving the signal. The environment in which the pull-cord switch is used is generally poor, especially in the wild environment. Most of the existing pull-cord switches are traditional electric switches. However, traditional electric switches usually use electrical components, such as electrical contacts, relays, etc., which are easily damaged or generate induced electricity in a humid environment, which brings danger to the operators. Especially in an emergency, people pulling the pull cord may cause the risk of electric shock. Utility Model Content

[0003] The embodiment of the present application provides an anti-fall pull-wire optical switch to solve the problem that most existing pull-wire switches in the related art are traditional electrical switches and have a certain risk of electric shock.

[0004] In a first aspect, a fall prevention pull rope optical switch is provided, comprising:

[0005] A switch body, which includes an enclosed mounting chamber;

[0006] A reset assembly, the reset assembly comprising a reset rod assembly rotatably disposed inside the mounting chamber, and a cam disposed on the reset rod assembly, wherein a group of water drop holes are symmetrically opened on the cam;

[0007] A tie rod assembly, the tie rod assembly comprising a tie rod assembly rotatably disposed in the installation chamber, and a set of forks disposed on the tie rod assembly, wherein the levers of the forks are respectively inserted into the corresponding water drop holes;

[0008] A switch assembly, the switch assembly comprising the light attenuation switch disposed in the mounting chamber and located above the cam, a duplex optical flange connected to the light attenuation switch, a movable plunger disposed on the light attenuation switch, and the plunger connected to the cam;

[0009] A steel wire rope is arranged on the pull rod assembly.

[0010] In some embodiments, the installation chamber is formed by an upper cover assembly and a lower cover assembly connected by bolts, and also includes an anti-fall rope with two ends respectively connected to the upper cover assembly and the lower cover assembly.

[0011] In some embodiments, the reset rod assembly includes a reset rod, an end cover, a spacer sleeve, an O-ring, a fixing pin, and a rotating shaft, wherein the rotating shaft is rotatably arranged inside the lower cover assembly, the O-ring is sleeved on the rotating shaft, the cam is sleeved on the rotating shaft, and the cam is located inside the mounting chamber, one end of the fixing pin passes through the cam and extends to the inside of the rotating shaft, one end of the rotating shaft passes through the lower cover assembly and is connected to the reset rod, the end cover 1 and the spacer sleeve are both sleeved on the rotating shaft, and the end cover 1 is arranged inside the lower cover assembly.

[0012] In some embodiments, a group of springs are disposed between the cam and the lower cover assembly, a protrusion is disposed inside the lower cover assembly, and the bottom end of the spring is connected to one side of the protrusion.

[0013] In some embodiments, the tie rod assembly includes a tie rod, a second O-ring, a second end cap, and a tie rod shaft, the tie rod shaft is rotatably arranged on the lower cover assembly, the rotating shaft and the tie rod shaft are arranged in parallel, the second O-ring is sleeved on the tie rod shaft, one end of the tie rod shaft passes through the lower cover assembly and is vertically connected to the tie rod, the second end cap is sleeved on the tie rod shaft, and the second end cap is arranged inside the lower cover assembly;

[0014] The plug-in seat is arranged on the pull rod shaft and is located inside the installation chamber.

[0015] In some embodiments, the mounting chamber is provided with a support assembly, the support assembly includes a mounting plate and a flange seat, the mounting plate is connected to the inner side wall of the lower cover assembly by bolts, and the flange seat is connected to the inner bottom wall of the lower cover assembly by bolts;

[0016] The duplex optical flange is arranged on the flange seat, the optical attenuation switch is arranged on the mounting plate, the flange seat and the mounting plate are both in an N shape, the cam is located in the middle of the bottom of the flange seat and the mounting plate, and the cam is located directly below the optical attenuation switch.

[0017] The embodiment of the present application provides an anti-fall pull rope optical switch. When the steel wire rope of the present application is subjected to external force, it drives the pull rod assembly, and then drives the cam to swing through the fork to lift the plunger of the optical attenuation switch, giving the optical attenuation switch changing light information. When the external force disappears, it returns to its initial state under the action of the reset rod assembly spring. The utility model uses optical signals to transmit information, reduces the risk of electric shock, and improves the safety of the equipment. The staff can manually alarm, or the steel wire rope can automatically alarm when it is hit, so that the device is more in line with actual use needs and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the pull-cord optical switch provided in the embodiment of the present application Figure 1 ;

[0020] Figure 2 Schematic diagram of the three-dimensional structure of the pull-cord optical switch provided in the embodiment of the present application Figure 2 ;

[0021] Figure 3 A schematic diagram of the assembly of the tie rod assembly provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the assembly of a switch assembly provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the reset assembly provided in an embodiment of the present application;

[0024] Figure 6 A three-dimensional schematic diagram of a lower cover assembly provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the connection between the pull-wire optical switch and the steel wire rope provided in an embodiment of the present application;

[0026] In the figure: 1. switch body; 12. upper cover assembly; 13. lower cover assembly; 2. installation chamber; 4. reset assembly; 41. reset rod assembly; 411. reset rod; 412. end cover one; 413. spacer; 414. O-ring one; 415. fixing pin; 416. rotating shaft; 42. cam; 43. water drop hole; 5. pull rod assembly; 51. pull rod assembly; 511. pull rod; 512. O-ring two; 513. end cover two; 514. pull rod shaft; 52. plug-in seat; 53. pull fork; 6. switch assembly; 61. support assembly; 611. mounting plate; 612. flange seat; 62. optical attenuation switch; 63. duplex optical flange; 7. wire rope; 8. bump; 9. spring; 10. anti-fall rope. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] The embodiment of the present application provides an anti-fall pull-cord optical switch, which can solve the problem that most existing pull-cord switches in the related art are traditional electrical switches and have a certain risk of electric shock.

[0029] See also Figure 1-Figure 3 A fall-proof pull-wire optical switch includes: a switch body 1, a reset assembly 4, a pull rod assembly 5, a switch assembly 6 and a wire rope 7; the switch body 1 includes an installation chamber 2 formed by bolt connection; the reset assembly 4 includes a reset rod assembly 41 rotatably arranged inside the installation chamber 2, a cam 42 arranged on the reset rod assembly 41, and a group of water drop holes 43 are symmetrically opened on the cam 42; the pull rod assembly 5 includes a pull rod assembly 51 rotatably arranged in the installation chamber 2, a plug-in seat 52 arranged on the pull rod assembly 51, and a plug-in seat 52 symmetrically arranged on the plug-in seat A group of forks 53 on 52, the levers of the forks 53 are respectively inserted into the corresponding water drop holes 43, the size of the water drop holes 43 is obviously larger than the size of the levers, so that the levers with different movement axes can move in the water drop holes and drive the cam to swing; the switch assembly 6 includes the light attenuation switch 62 arranged in the installation chamber 2 and located above the cam 42, and the duplex light flange 63 connected to the light attenuation switch 62, the light attenuation switch 62 is provided with a movable plunger, and the plunger is connected to the cam; the wire rope 7 is arranged on the pull rod assembly 51.

[0030] It should be noted that the other output port of the duplex optical flange 63 in this embodiment is connected to an external alarm.

[0031] In actual use, when an emergency occurs, the steel wire rope 7 is hit, or the staff manually touches the steel wire rope, the steel wire rope 7 drives the pull rod assembly 51 to rotate clockwise or counterclockwise, thereby driving the plug seat 52 and the pull fork 53 to rotate together. Since the lever of the pull fork 53 extends to the inside of the water drop hole 43, the cam 42 is driven to swing. When the cam 42 rotates and swings, it lifts the plunger of the optical attenuation switch 62, causing the optical path attenuation of the optical attenuation switch 62 to change, and transmits the optical signal emitted by the optical attenuation switch 62 to the controller through the duplex optical flange 63. The controller turns on the alarm according to the preset value, so that the alarm sounds an alarm. Using an optical switch for signal transmission can make the signal transmission effect better. At the same time, the device can realize clockwise and counterclockwise bidirectional swing, allowing the staff to manually alarm, or automatically trigger the alarm when the steel wire rope is hit, so that the device is more in line with actual use needs. At the same time, because it uses optical signals, the risk of electric shock is reduced and the safety of equipment use is improved.

[0032] Specifically, in this embodiment, the installation chamber 2 is formed by an upper cover assembly 12 and a lower cover assembly 13 connected by bolts, and also includes an anti-fall rope 10 with two ends respectively connected to the upper cover assembly 12 and the lower cover assembly 13.

[0033] The upper cover assembly 12 and the lower cover assembly 13 are connected and enclosed to form an installation chamber 2, and various components are installed through the installation chamber 2.

[0034] In addition, generally, the anti-fall pull rope optical switch of the utility model is generally fixedly installed on a fixed column or bracket. When the equipment is inspected and maintained, the upper cover assembly 12 and the lower cover assembly 13 are connected to each other through the anti-fall rope 10 to avoid the upper cover assembly 12 or the lower cover assembly 13 being lost during the maintenance process.

[0035] There are two forks 53 in a group, and the number of the water drop holes 43 corresponds to the number of the forks 53 .

[0036] Specifically, in this embodiment, the pull rod assembly 51 and the reset rod assembly 41 are arranged opposite to each other, and the pull rod assembly 51 and the reset rod assembly 41 are distributed along the length direction of the switch body 1 , and the plug-in seat 52 is a U-shaped plate.

[0037] The pull rod assembly 51 and the reset rod assembly 41 are symmetrically mounted inside the lower cover assembly 13, so that when the pull rod assembly 51 rotates, the reset rod assembly 41 can be driven to swing to a corresponding angle;

[0038] The U-shaped plug-in seat 52 can be used to mount the two pull-out forks 53 on the plug-in seat 52 , and the influence of the plug-in seat 52 on the cam 42 can be reduced.

[0039] Preferably, Figure 2 and Figure 5 As shown, the reset rod assembly 41 in this embodiment includes a reset rod 411, an end cover 412, a spacer 413, an O-ring 414, a fixing pin 415, and a rotating shaft 416. The rotating shaft 416 is rotatably arranged inside the lower cover assembly 13, the O-ring 414 is sleeved on the rotating shaft 416, the cam 42 is sleeved on the rotating shaft 416, and the cam 42 is located inside the installation chamber 2, one end of the fixing pin 415 passes through the cam 42 and extends to the inside of the rotating shaft 416, one end of the rotating shaft 416 passes through the lower cover assembly 13 and is connected to the reset rod 411, the end cover 412 and the spacer 413 are both sleeved on the rotating shaft 416, and the end cover 412 is arranged inside the lower cover assembly 13.

[0040] The lower cover assembly 13 is provided with a through hole 1, one end of the rotating shaft 416 passes through the threaded hole and extends to the outside of the lower cover assembly 13, one end of the end cover 1 412 is connected to the through hole 1 by interference fit, and the end cover 1 412 has a circular hole inside, and the inner diameter of the end cover 1 412 is adapted to the rotating shaft 416;

[0041] During actual use, the end cover 412 is sleeved on the rotating shaft 416, and the rotating shaft 416 is then inserted into the threaded hole, and then the spacer 413 is sleeved on the rotating shaft 416, and the cam 42 is fixed to the rotating shaft 416 by the fixing pin 415, and then the end cover 412 is pressed into the through hole 1 to limit the reset rod 411 and the rotating shaft 416. When the fork 53 drives the cam 42 to rotate, it can drive the rotating shaft 416 and the reset rod 411 to rotate in the same direction.

[0042] Further, such as Figure 5 As shown, in this embodiment, a group of springs 9 are arranged at the bottom of the cam 42 , a protrusion 8 is arranged inside the lower cover assembly 13 , and the bottom end of the spring 9 abuts against one side of the protrusion 8 .

[0043] During actual use, when the cam 42 rotates together with the reset rod assembly 41, the upper end of the spring 9 is driven to shift in angle, and the bottom end of the spring 9 is squeezed against the protrusion 8. When the staff stops pulling the wire rope 7 or the wire rope is hit, the spring 9 returns to its natural state, driving the cam 42 and the reset rod 411 to swing to a corresponding angle, causing the optical path attenuation of the optical attenuation switch 62 to change.

[0044] Preferably, Figure 2 and Figure 3As shown, the pull rod assembly 51 in this embodiment includes a pull rod 511, an O-ring 512, an end cover 513 and a pull rod shaft 514, the pull rod shaft 514 is rotatably set on the lower cover assembly 13, the rotating shaft 416 and the pull rod shaft 514 are symmetrically distributed, and the rotating shaft 416 and the pull rod shaft 514 are distributed forward and backward along the length of the switch body 1, the O-ring 512 is sleeved on the pull rod shaft 514, one end of the pull rod shaft 514 passes through the lower cover assembly 13 and is connected to the pull rod 511, the end cover 513 is sleeved on the pull rod shaft 514, and the end cover 513 is set inside the lower cover assembly 13; the plug-in seat 52 is set on the pull rod shaft 514 and is located inside the installation chamber 2.

[0045] Among them, a through hole 2 is opened on the lower cover assembly 13, one end of the pull rod shaft 514 passes through the through hole 2 and extends to the outside of the lower cover assembly 13, one end of the end cover 2 513 is connected to the through hole 2 by interference fit, the end cover 2 513 has a circular hole inside, and the inner diameter of the end cover 2 513 is adapted to the pull rod shaft 514;

[0046] According to the same principle, the second end cover 513 is put on the pull rod shaft 514, one end of the pull rod shaft 514 passes through the second through hole and extends to the inside of the lower cover assembly 13, and then the plug-in seat 52 is fixedly installed on the pull rod shaft 514, and then the second end cover is pressed into the inside of the second through hole. Therefore, when the wire rope drives the pull rod 511 to rotate, the pull rod 511 drives the pull rod shaft 514 and the plug-in seat 52 to rotate at the same time, thereby driving the cam to rotate through the fork 53.

[0047] It can be understood that the steel wire rope 7 is wound around the pull rod 511 .

[0048] like Figure 4 As shown, the support assembly 61 in this embodiment includes a mounting plate 611 and a flange seat 612, the mounting plate 611 is connected to the inner side wall of the lower cover assembly 13 by bolts, and the flange seat 612 is connected to the inner bottom wall of the lower cover assembly 13 by bolts;

[0049] The duplex optical flange 63 is arranged on the flange seat 612, and the optical attenuation switch 62 is arranged on the mounting plate 611. The flange seat 612 and the mounting plate 611 are both n-shaped, and the cam 42 is located in the middle of the bottom of the flange seat 612 and the mounting plate 611, and the cam 42 is located directly below the optical attenuation switch 62.

[0050] In actual use, the optical attenuation switch 62 is fixedly installed by the mounting plate 611, and the duplex optical flange 63 is installed by the flange seat 612. At the same time, the flange seat 612 and the mounting plate 611 are both n-shaped, so that the cam 42 can be installed directly below the optical attenuation switch 62. Therefore, when the cam 42 rotates and swings, the optical path attenuation of the optical attenuation switch 62 changes, causing the optical attenuation switch 62 to emit an optical signal.

[0051] It should be noted that if Figure 1 As shown, an interface for cable connection is relatively arranged on the lower cover assembly 13 in this embodiment.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A fall-proof pull-rope optical switch, characterized in that: include: A switch body (1) comprising an enclosed mounting chamber (2); A reset assembly (4), the reset assembly (4) comprising a reset rod assembly (41) rotatably disposed inside the installation chamber (2), and a cam (42) disposed on the reset rod assembly (41), wherein a group of water drop holes (43) are symmetrically formed on the cam (42); A pull rod assembly (5), the pull rod assembly (5) comprising a pull rod assembly (51) rotatably disposed in the installation chamber (2), and a group of shift forks (53) disposed on the pull rod assembly (51), wherein shift rods of the shift forks (53) are respectively inserted into corresponding water drop holes (43); A switch assembly (6), the switch assembly (6) comprising a light attenuation switch (62) arranged in the installation chamber (2) and located above the cam (42), and a duplex optical flange (63) connected to the light attenuation switch (62), wherein a movable plunger is arranged on the light attenuation switch (62), and the plunger is connected to the cam; A steel wire rope (7) is arranged on the pull rod assembly (51).

2. The anti-fall pull rope optical switch according to claim 1, characterized in that: The installation chamber (2) is formed by enclosing an upper cover assembly (12) and a lower cover assembly (13) by bolt connection, and further comprises an anti-fall rope (10) with two ends respectively connected to the upper cover assembly (12) and the lower cover assembly (13).

3. The anti-fall pull rope optical switch according to claim 2, characterized in that: The reset rod assembly (41) comprises a reset rod (411), an end cover (412), a spacer (413), an O-ring (414), a fixing pin (415), and a rotating shaft (416); the rotating shaft (416) is rotatably arranged inside the lower cover assembly (13); the O-ring (414) is sleeved on the rotating shaft (416); the cam (42) is sleeved on the rotating shaft (416), and the cam (42) is located inside the installation chamber (2); one end of the fixing pin (415) passes through the cam (42) and extends to the inside of the rotating shaft (416); one end of the rotating shaft (416) passes through the lower cover assembly (13) and is connected to the reset rod (411); the end cover (412) and the spacer (413) are both sleeved on the rotating shaft (416), and the end cover (412) is arranged inside the lower cover assembly (13).

4. The anti-fall pull rope optical switch according to claim 2, characterized in that: A group of springs (9) are arranged between the cam (42) and the lower cover assembly (13), a protrusion (8) is arranged inside the lower cover assembly (13), and the bottom end of the spring (9) is connected to one side of the protrusion (8).

5. The anti-fall pull rope optical switch according to claim 3, characterized in that: The tie rod assembly (51) comprises a tie rod (511), a second O-ring (512), a second end cover (513) and a tie rod shaft (514); the tie rod shaft (514) is rotatably arranged on the lower cover assembly (13); the rotating shaft (416) and the tie rod shaft (514) are arranged in parallel; the second O-ring (512) is sleeved on the tie rod shaft (514); one end of the tie rod shaft (514) passes through the lower cover assembly (13) and is vertically connected to the tie rod (511); the second end cover (513) is sleeved on the tie rod shaft (514), and the second end cover (513) is arranged inside the lower cover assembly (13); The plug-in socket (52) is arranged on the pull rod shaft (514) and is located inside the installation chamber (2).

6. The anti-fall pull rope optical switch according to claim 5, characterized in that: The mounting chamber (2) is provided with a support assembly (61), the support assembly (61) comprising a mounting plate (611) and a flange seat (612), the mounting plate (611) being connected to an inner side wall of the lower cover assembly (13) via bolts, and the flange seat (612) being connected to an inner bottom wall of the lower cover assembly (13) via bolts; The duplex optical flange (63) is arranged on a flange seat (612), the optical attenuation switch (62) is arranged on a mounting plate (611), the flange seat (612) and the mounting plate (611) are both n-shaped, the cam (42) is located in the middle of the bottom of the flange seat (612) and the mounting plate (611), and the cam (42) is located directly below the optical attenuation switch (62).

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