A magnetic adsorption proximity switch suitable for overhead crane door warehouse

Abstract

The utility model discloses a magnetic adsorption proximity switch suitable for a crane door compartment, and relates to the field of proximity switches. The crane door compartment includes a first fence and a door compartment body which are arranged in sequence, and the magnetic adsorption proximity switch includes a mounting box, a proximity switch, a magnetic block and a stopper; the proximity switch is arranged on the front of the mounting box; the magnetic block is arranged on the front of the mounting box; the stopper is arranged corresponding to the front of the mounting box, the stopper and the magnetic block can be adsorbed and connected, and when the stopper and the magnetic block are adsorbed and connected, the stopper covers the front of the mounting box and is arranged close to the proximity switch; wherein, one of the mounting box and the stopper is installed on the first fence, and the other is installed on the door compartment body. The beneficial effects of the utility model are: during the operation of the crane, even if the crane is not stable and shakes, due to the magnetic adsorption force of the magnetic block on the stopper, the stopper does not separate from the magnetic block, and the stopper is always close to the proximity switch.

Description

Technical Field

[0001] The utility model relates to the field of proximity switches, in particular to a magnetic adsorption proximity switch suitable for a crane door compartment. Background Art

[0002] Inductive proximity switches are a low-cost way to detect metal objects without contact. When a metal object moves toward or away from the proximity switch, the signal will automatically change, thereby achieving the purpose of detection. In order to ensure that the staff operates the overhead crane safely and in accordance with regulations, the overhead crane cannot continue to operate when the staff gets off the overhead crane, that is, when the door compartment is opened, the overhead crane system needs power-off protection. Usually, an inductive proximity switch is installed at the door compartment of the overhead crane to detect the switch signal. That is, the overhead crane includes a fence and a door compartment. Among the fence and the door compartment, a stopper is installed on one of them, and a proximity switch is installed on the other. When the door compartment is closed, the stopper is close to the proximity switch, the proximity switch is turned on, and the overhead crane can operate normally. When the door compartment is opened, the stopper is away from the proximity switch, the proximity switch is disconnected, and the overhead crane system is powered off, and the overhead crane cannot operate normally.

[0003] However, when the overhead crane is in operation, the running route of the overhead crane is sometimes unstable and shakes. At this time, the warehouse door will also shake. In other words, the stop iron will constantly move away from or close to the proximity switch. The frequent disconnection or conduction of the proximity switch will cause the operation of the overhead crane to be interrupted, seriously affecting the working efficiency of the overhead crane. Utility Model Content

[0004] In order to overcome the problem in the prior art that the proximity switch is frequently disconnected and the operation of the overhead crane is interrupted due to the unstable operation of the overhead crane, the utility model provides a magnetic adsorption proximity switch suitable for the overhead crane door warehouse, the overhead crane door warehouse comprises a first fence and a door warehouse body arranged in sequence, and the magnetic adsorption proximity switch comprises:

[0005] Installation box;

[0006] A proximity switch, arranged on the front side of the installation box;

[0007] A magnetic block, arranged on the front side of the installation box;

[0008] A stopper iron is arranged corresponding to the front side of the installation box, and the stopper iron and the magnetic block can be adsorbed and connected. When the stopper iron and the magnetic block are adsorbed and connected, the stopper iron covers the front side of the installation box and is arranged close to the proximity switch;

[0009] Among them, one of the installation box and the stop iron is installed on the first fence, and the other is installed on the door compartment body.

[0010] Closing the door bin body allows the stop iron to be adsorbed and connected to the magnetic block, the stop iron is close to the proximity switch, the proximity switch is turned on, and the overhead crane can operate normally. During the operation of the overhead crane, even if the operation of the overhead crane is unstable or shakes, due to the magnetic adsorption force of the magnetic block on the stop iron, the stop iron is not separated from the magnetic block, and the stop iron is always close to the proximity switch, and the overhead crane will not be powered off during operation. When the door bin body is opened, the stop iron and the magnetic block are disconnected, the stop iron is away from the proximity switch, the proximity switch is disconnected, the overhead crane is powered off and cannot operate.

[0011] Preferably, the overhead crane door warehouse further comprises a second fence, one side of the door warehouse body comprises a first upright pole, and the other side of the door warehouse body is rotatably connected to the second fence via a rotating shaft;

[0012] Wherein, the back side of the installation box is detachably connected to the first vertical pole, and the stop iron is detachably connected to the first fence.

[0013] Preferably, the installation box comprises an installation box body and a fixing plate, the back of the installation box body is detachably connected to the front of the fixing plate by screws, a first clamp is fixed to the back of the fixing plate, and the first clamp is detachably connected to the first vertical pole;

[0014] Wherein, the proximity switch is arranged on the front side of the installation box body, the magnetic block is arranged on the front side of the installation box body, and when the stop iron is adsorbed and connected to the magnetic block, the stop iron covers the front side of the installation box body.

[0015] Preferably, a mounting opening is provided in the middle of the front of the mounting box body, and a plurality of mounting holes symmetrically distributed on both sides of the mounting opening are also provided on the front of the mounting box body, and the plurality of mounting holes on both sides of the mounting opening are evenly spaced and arranged;

[0016] Wherein, the proximity switch is fixed at the mounting opening; and there are a plurality of magnetic blocks which are detachably mounted in the mounting holes in a one-to-one correspondence.

[0017] Preferably, each of the mounting holes is provided with an internal thread;

[0018] The outer circumference of each magnetic block is respectively provided with an external thread, and the external thread of the magnetic block is matched and connected with the internal thread of the corresponding mounting hole.

[0019] Preferably, each of the magnetic blocks comprises a mounting section and a screwing section, the mounting section is provided with the external thread and is located in the corresponding mounting hole, the screwing section extends out of the front face of the mounting box body, and the cross section of the screwing section is configured as a polygon;

[0020] The stop iron can be connected to the outer surface of the screwing section by adsorption.

[0021] Preferably, the first fence includes a second upright pole arranged corresponding to the first upright pole;

[0022] One end of the stop iron is detachably connected to the second vertical rod.

[0023] Preferably, a second clamp is fixed to one end of the stop iron, and the second clamp is detachably connected to the second vertical rod.

[0024] Preferably, a first elastic anti-skid pad wrapped around the outer circumference of the first vertical pole is fixed to the inner ring of the first clamp; and a second elastic anti-skid pad wrapped around the outer circumference of the second vertical pole is fixed to the inner ring of the second clamp.

[0025] Preferably, the stop iron includes a connecting section and a mating section, the second clamp is fixed to one end of the connecting section, the other end of the connecting section is fixed to the mating section, the mating section is bent relative to the connecting section, the mating section extends along the arrangement direction of the first vertical pole and the second vertical pole, and the mating section can be adsorbed and connected to the outer surface of the screwing section.

[0026] Beneficial effects:

[0027] (1) The proximity switch is arranged on the front of the installation box, the magnetic block is arranged on the front of the installation box, the stopper iron is arranged corresponding to the front of the installation box, the stopper iron and the magnetic block can be adsorbed and connected, when the stopper iron and the magnetic block are adsorbed and connected, the stopper iron covers the front of the installation box and is arranged close to the proximity switch, and the proximity switch is turned on; when the stopper iron is not adsorbed and connected to the magnetic block and the stopper iron is far away from the proximity switch, the proximity switch is turned off.

[0028] (2) The installation box and the stop iron, one of which is installed on the first fence, and the other is installed on the door compartment body. The stop iron and the magnetic block can be connected or disconnected by closing or opening the door compartment body. That is, the proximity switch can be connected or disconnected by closing or opening the door compartment body.

[0029] When the utility model is applied to the scene of overhead crane operation, first, the staff enters the overhead crane and closes the door compartment body to make the stop iron and the magnetic block adsorbed and connected. At this time, the stop iron is close to the proximity switch setting, the proximity switch is turned on, and the overhead crane can operate normally. During the operation of the overhead crane, even if the operation of the overhead crane is unstable and shakes, due to the magnetic adsorption force of the magnetic block on the stop iron, the stop iron is not separated from the magnetic block, and the stop iron is always close to the proximity switch setting. The overhead crane will not be powered off in the middle of the operation until the work of the overhead crane is completed. When the staff gets off the overhead crane, they open the door compartment body, the stop iron and the magnetic block are disconnected, the stop iron is away from the proximity switch, the proximity switch is disconnected, the overhead crane is powered off for protection and cannot operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of a magnetic adsorption proximity switch installed on a mid-air vehicle of the utility model;

[0032] Figure 2 It is a top view of the magnetic adsorption proximity switch in the utility model;

[0033] Figure 3 It is a front view of the middle stopper of the utility model;

[0034] Figure 4 This is a front view of a mounting box in the utility model with a magnetic block and a proximity switch installed;

[0035] Figure 5 For this utility model Figure 4 Middle AA section view;

[0036] In the figure:

[0037] 1-first fence, 101-second upright pole, 2-door compartment body, 201-first upright pole, 3-installation box body, 3a-front of installation box body, 3b-back of installation box body, 301-installation port, 302-installation hole, 4-fixing plate, 4a-front of fixing plate, 4b-back of fixing plate, 401-first clamp, 402-first elastic anti-skid pad, 5-proximity switch, 6-magnetic block, 601-installation section, 602-screwing section, 7-stop iron, 701-second clamp, 702-second elastic anti-skid pad, 703-connecting section, 704-matching section, 8-second fence. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] Please refer to Figures 1 to 5 , the present embodiment provides a magnetic adsorption proximity switch suitable for a crane door warehouse, the crane comprises a first fence 1 and a door warehouse body 2 which are arranged in sequence, the magnetic adsorption proximity switch 5 comprises a mounting box, a proximity switch 5, a magnetic block 6 and a stop iron 7; the proximity switch 5 is arranged on the front of the mounting box, the magnetic block 6 is arranged on the front of the mounting box, the magnetic block 6 is made of a magnet, the stop iron 7 is arranged corresponding to the front of the mounting box, the stop iron 7 and the magnetic block 6 can be adsorbed and connected, and when the stop iron 7 and the magnetic block 6 are adsorbed and connected, the stop iron 7 covers the front of the mounting box and is arranged close to the proximity switch 5, the proximity switch 5 is turned on, the stop iron 7 is not adsorbed and connected to the magnetic block 6 and the stop iron 7 is far away from the proximity switch 5, the proximity switch 5 is turned off; wherein, one of the mounting box and the stop iron 7 is installed on the first fence 1, and the other is installed on the door warehouse body 2, and the stop iron 7 can be connected by closing or opening the door warehouse body 2. The iron stop 7 and the magnetic block 6 are connected or disconnected, that is, the proximity switch 5 can be connected or disconnected by closing or opening the door compartment body 2; when the utility model is applied to the scene of the overhead crane working, first, the staff enters the overhead crane, closes the door compartment body 2 to make the iron stop 7 and the magnetic block 6 adsorbed and connected. At this time, the iron stop 7 is set close to the proximity switch 5, the proximity switch 5 is turned on, and the overhead crane can operate normally. During the operation of the overhead crane, even if the operation of the overhead crane is unstable and shaking, due to the magnetic adsorption force of the magnetic block 6 on the iron stop 7, the iron stop 7 is not separated from the magnetic block 6, and the iron stop 7 is always set close to the proximity switch 5. The overhead crane will not be powered off in the middle of its work until the work of the overhead crane is completed. When the staff gets off the overhead crane, they open the door compartment body 2, the iron stop 7 and the magnetic block 6 are disconnected, the iron stop 7 is away from the proximity switch 5, the proximity switch 5 is disconnected, and the power-off protection of the overhead crane cannot operate.

[0040] As a preferred embodiment, the overhead crane also includes a second fence 8, one side of the door bin body 2 includes a first vertical pole 201, and the other side of the door bin body 2 is rotatably connected to the second fence 8 via a rotating shaft; wherein, the back side of the mounting box is detachably connected to the first vertical pole 201, the stop iron 7 is detachably connected to the first fence 1, and the door bin body 2 rotates relative to the second fence 8 via the rotating shaft so that the first vertical pole 201 approaches or moves away from the second vertical pole 101, when the first vertical pole 201 approaches the second vertical pole 101, the stop iron 7 is adsorbed and connected to the magnetic block 6, the stop iron 7 is set close to the proximity switch 5, and the proximity switch 5 is turned on, when the first vertical pole 201 moves away from the second vertical pole 101, the stop iron 7 is disconnected from the magnetic block 6, the stop iron 7 is set away from the proximity switch 5, and the proximity switch 5 is disconnected.

[0041] As a preferred embodiment, the installation box includes an installation box body 3 and a fixing plate 4, the back side 3b of the installation box body is detachably connected to the front side 4a of the fixing plate by screws, the back side 4b of the fixing plate is fixed with a first clamp 401, and the first clamp 401 and the first vertical pole 201 are detachably connected, so as to facilitate the installation and disassembly of the installation box body 3 and the fixing plate 4; wherein, the proximity switch 5 is arranged on the front side 3a of the installation box body, the magnetic block 6 is arranged on the front side 3a of the installation box body, and when the stop iron 7 is adsorbed and connected to the magnetic block 6, the stop iron 7 covers the front side 3a of the installation box body. A mounting opening 301 is provided in the middle of the front side 3a of the mounting box body, and a plurality of mounting holes 302 are symmetrically distributed on both sides of the mounting opening 301 are also provided on the front side 3a of the mounting box body, and the plurality of mounting holes 302 on both sides of the mounting opening 301 are evenly spaced apart; wherein, the proximity switch 5 is fixed at the mounting opening 301; a plurality of magnetic blocks 6 are detachably mounted at the mounting holes 302 in a one-to-one correspondence, so that the plurality of magnetic blocks 6 are symmetrically distributed on both sides of the proximity switch 5, so that the magnetic adsorption force of the magnetic blocks 6 on the stop iron 7 is evenly distributed, thereby preventing the magnetic blocks 6 and the stop iron 7 from separating when the overhead crane shakes.

[0042] As a preferred embodiment, each mounting hole 302 is respectively provided with an internal thread; the outer periphery of each magnetic block 6 is respectively provided with an external thread, and the external thread of the magnetic block 6 is matched and connected with the internal thread of the corresponding mounting hole 302, so as to facilitate the removal of the magnetic block 6. According to the degree of shaking of the overhead crane, a suitable number of magnetic blocks 6 can be selected and placed in the mounting hole 302, so as to ensure that the magnetic blocks 6 and the stop irons 7 are not separated when the overhead crane shakes, and to ensure that when the staff get off the overhead crane, it can open the door bin body 2 without too much effort.

[0043] As a preferred embodiment, each magnetic block 6 includes a mounting section 601 and a screwing section 602. The mounting section 601 is provided with an external thread and is located in the corresponding mounting hole 302. The screwing section 602 extends out of the front side 3a of the mounting box body. The cross section of the screwing section 602 is constructed as a polygon. The screwing section 602 can be rotated by a wrench to install the magnetic block 6 in the mounting hole 302 or remove the magnetic block 6 from the mounting hole 302, and disassembly is convenient. The stop iron 7 can be adsorbed and connected to the outer surface of the screwing section 602.

[0044] As a preferred embodiment, the first fence 1 includes a second vertical pole 101 arranged corresponding to the first vertical pole 201; one end of the stop iron 7 is detachably connected to the second vertical pole 101. A second clamp 701 is fixed to one end of the stop iron 7, and the second clamp 701 is detachably connected to the second vertical pole 101, which is easy to install. The inner ring of the first clamp 401 is fixed with a first elastic anti-skid pad 402 wrapped around the outer periphery of the first vertical pole 201; the inner ring of the second clamp 701 is fixed with a second elastic anti-skid pad 702 wrapped around the outer periphery of the second vertical pole 101, so as to prevent the stop iron 7 or the installation box from moving, so that the stop iron 7 is always arranged corresponding to the magnetic block 6 and the proximity switch 5.

[0045] As a preferred embodiment, the stop iron 7 includes a connecting section 703 and a mating section 704, one end of the connecting section 703 is fixed with a second clamp 701, the other end of the connecting section 703 is fixed to the mating section 704, the mating section 704 is bent relative to the connecting section 703, and the mating section 704 extends along the arrangement direction of the first vertical pole 201 and the second vertical pole 101, so that the mating section 704 is arranged corresponding to the outer surface of the screwing section 602 and can be adsorbed and connected.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic adsorption proximity switch suitable for a crane door compartment, the crane comprising a first fence and a door compartment body arranged in sequence, characterized in that: The magnetic adsorption proximity switch comprises: Installation box; A proximity switch, arranged on the front side of the installation box; A magnetic block, arranged on the front side of the installation box; A stopper iron is arranged corresponding to the front side of the installation box, and the stopper iron and the magnetic block can be adsorbed and connected. When the stopper iron and the magnetic block are adsorbed and connected, the stopper iron covers the front side of the installation box and is arranged close to the proximity switch; Among them, one of the installation box and the stop iron is installed on the first fence, and the other is installed on the door compartment body.

2. A magnetic adsorption proximity switch suitable for overhead crane door compartment according to claim 1, characterized in that: The overhead crane door warehouse further includes a second fence, one side of the door warehouse body includes a first vertical pole, and the other side of the door warehouse body is rotatably connected to the second fence; Wherein, the back side of the installation box is detachably connected to the first vertical pole, and the stop iron is detachably connected to the first fence.

3. A magnetic adsorption proximity switch suitable for overhead crane door compartment as claimed in claim 2, characterized in that: The installation box comprises an installation box body and a fixing plate, the back of the installation box body is detachably connected to the front of the fixing plate, a first clamp is fixed to the back of the fixing plate, and the first clamp is detachably connected to the first vertical rod; Wherein, the proximity switch is arranged on the front side of the installation box body, the magnetic block is arranged on the front side of the installation box body, and when the stop iron is adsorbed and connected to the magnetic block, the stop iron covers the front side of the installation box body.

4. A magnetic adsorption proximity switch suitable for overhead crane door compartment as claimed in claim 3, characterized in that: A mounting opening is provided in the middle of the front of the mounting box body, and a plurality of mounting holes are also provided on the front of the mounting box body and are symmetrically distributed on both sides of the mounting opening, and the plurality of mounting holes on both sides of the mounting opening are evenly spaced and arranged; Wherein, the proximity switch is fixed at the mounting opening; and there are a plurality of magnetic blocks which are detachably mounted in the mounting holes in a one-to-one correspondence.

5. A magnetic adsorption proximity switch suitable for overhead crane door compartment as claimed in claim 4, characterized in that: Each of the mounting holes is provided with an internal thread; The outer circumference of each magnetic block is respectively provided with an external thread, and the external thread of the magnetic block is matched and connected with the internal thread of the corresponding mounting hole.

6. A magnetic adsorption proximity switch suitable for overhead crane door compartment as claimed in claim 5, characterized in that: Each of the magnetic blocks comprises a mounting section and a screwing section, wherein the mounting section is provided with the external thread and is located in the corresponding mounting hole, the screwing section extends out of the front side of the mounting box body, and the cross section of the screwing section is configured as a polygon; The stop iron can be connected to the outer surface of the screwing section by adsorption.

7. A magnetic adsorption proximity switch suitable for overhead crane door compartment according to claim 6, characterized in that: The first fence includes a second upright pole arranged corresponding to the first upright pole; One end of the stop iron is detachably connected to the second vertical rod.

8. The magnetic adsorption proximity switch suitable for overhead crane door compartment according to claim 7, characterized in that: A second clamp is fixed to one end of the stop iron, and the second clamp is detachably connected to the second vertical rod.

9. A magnetic adsorption proximity switch suitable for overhead crane door compartment according to claim 8, characterized in that: A first elastic anti-skid pad wrapped around the outer periphery of the first vertical pole is fixed to the inner ring of the first clamp; a second elastic anti-skid pad wrapped around the outer periphery of the second vertical pole is fixed to the inner ring of the second clamp.

10. A magnetic adsorption proximity switch suitable for overhead crane door compartment according to claim 9, characterized in that: The stop iron includes a connecting section and a matching section, one end of the connecting section is fixed with the second clamp, the other end of the connecting section is fixed to the matching section, the matching section is bent relative to the connecting section, the matching section extends along the arrangement direction of the first vertical pole and the second vertical pole, and the matching section can be adsorbed and connected to the outer surface of the screwing section.

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