Anti-falling safety pin for floor elevator

Abstract

The utility model is suitable for the technical field of safety pins, and provides an anti-falling safety pin for a floor elevator. The limiting block, the first supporting plate and the second supporting plate are integrally formed on the outer side wall of the base plate, and the first supporting plate is located between the limiting block and the second supporting plate; the sleeve is fixed on the inner side walls of the first supporting plate and the second supporting plate; the inner rod is embedded into the sleeve; the pin rod is integrally formed at one end of the inner rod; rotation of the pin rod is controlled through meshing transmission so as to achieve the purpose of controlling the angle where the limiting plate is located, then it is guaranteed that the pin rod in the safety pin is in an unlimited state, the pin connection state is relieved or completed by controlling linear movement of the pin rod, manual up-down pulling and inserting are not needed, electric control is achieved, and the safety pin is safe and reliable. The problem that the safety pin can be randomly opened to cause safety accidents is effectively avoided, and the anti-falling capability of the safety pin is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety pins, and particularly relates to an anti-detachment safety pin for a floor hoist. Background Art

[0002] A floor hoist is a large-scale mechanical equipment that transports by changing potential energy, such as a mine hoist, a dam-hoisting machine, etc. A safety pin is used in the floor hoist to realize pin connection between movable structures.

[0003] Most of the existing safety pins on floor hoists adopt conventional separable plug-and-pull safety pins. Such safety pins need to be manually plugged and unplugged up and down, which is very inconvenient. Moreover, the safety pin is in a movable state, and it is easy to cause problems such as safety accidents due to misoperation and easy opening of the safety pin.

[0004] Therefore, an anti-detachment safety pin for a floor hoist is proposed. Content of the Utility Model

[0005] The utility model provides an anti-detachment safety pin for a floor hoist, aiming to solve the above problems.

[0006] The utility model is realized as follows: an anti-detachment safety pin for a floor hoist, comprising: a base plate; a limiting block, a first support plate and a second support plate integrally formed on the outer side wall of the base plate, the first support plate being located between the limiting block and the second support plate; a sleeve fixed to the inner side walls of the first support plate and the second support plate; an inner rod embedded in the sleeve; a pin rod integrally formed at one end of the inner rod; a limiting plate welded to the outer side wall of the pin rod at a position between the limiting block and the first support plate; a gear shaft fixed to the other end of the inner rod by a key; a servo motor fixed to the outer side wall of the second support plate by a bolt; a gear fixed to the output end of the servo motor; an electric push rod fixed to the central position at one end of the sleeve by a bolt; a push-pull plate fixed to the output end of the electric push rod, the push-pull plate being rotatably connected to the gear shaft; a fixing frame fixed to the outer side wall of the base plate near the limiting block by a bolt; a proximity switch fixed to the inner side wall of the fixing frame.

[0007] Preferably, a through hole for the pin rod to penetrate is provided on one outer wall of the limiting block.

[0008] Preferably, a through groove for the gear to be embedded is provided on one outer wall of the sleeve, and the gear and the gear shaft are meshed and connected by gear teeth.

[0009] Preferably, the proximity switch is located directly below the pin rod, and a chamfer is provided at one end of the pin rod.

[0010] Preferably, the cross-sections of the first support plate and the second support plate are both "concave"-shaped structures.

[0011] Preferably, the length of the gear shaft is eight times the length of the gear.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] By controlling the rotation of the pin rod through meshing transmission to achieve the purpose of controlling the angle of the limiting plate, thereby ensuring that the pin rod in the safety pin is in an unlimited state, and by controlling the linear movement of the pin rod to release or complete the pin connection state, not only does it not require manual insertion and extraction, realizing electric control, but also effectively avoids the problem that the safety pin can be easily opened and prone to safety accidents, improves the anti-detachment ability of the safety pin, and uses a proximity switch to detect the movement state of the pin rod, so as to accurately reflect the position and stroke of the pin rod, realize the stroke control of the pin rod, and ensure the effect of releasing or completing the pin connection state of the safety pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the pin rod of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the electric push rod of the present utility model;

[0017] Figure 4 is the present utility model Figure 1 The enlarged view at A in.

[0018] In the figure: 1, substrate; 2, limiting block; 3, first support plate; 4, second support plate; 5, sleeve; 6, inner rod; 7, pin rod; 8, limiting plate; 9, gear shaft; 10, servo motor; 11, gear; 12, electric push rod; 13, push-pull disc; 14, fixing bracket; 15, proximity switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects, rather than to describe a specific order.

[0020] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the present utility model provides an anti - detachment safety pin for a floor hoist, as Figures 1-4 shown, which includes a base plate 1. A limiting block 2, a first support plate 3, and a second support plate 4 are integrally formed on one outer wall of the base plate 1. The first support plate 3 is located between the limiting block 2 and the second support plate 4. The cross - sections of the first support plate 3 and the second support plate 4 are both "concave" - shaped structures, which can realize the stable support and fixation of the sleeve 5. A sleeve 5 is fixedly connected to the inner side walls of the first support plate 3 and the second support plate 4. An inner rod 6 is inserted into the sleeve 5. One end of the inner rod 6 is integrally formed with a pin rod 7. A limiting plate 8 is welded on the outer side wall of the pin rod 7 at a position between the limiting block 2 and the first support plate 3. The other end of the inner rod 6 is fixedly connected with a gear shaft 9 by a key. A servo - motor 10 is fixedly connected to one outer wall of the second support plate 4 by bolts. The servo - motor 10 is fixedly connected with a gear 11 through an output end on one side thereof. An electric push - rod 12 is fixedly connected to the central position of one end of the sleeve 5 by bolts. The electric push - rod 12 is fixedly connected with a push - pull plate 13 through an output end on one side thereof. The push - pull plate 13 is rotatably connected with the gear shaft 9. A fixing frame 14 is fixedly connected to one outer wall of the base plate 1 at a position close to the limiting block 2 by bolts. A proximity switch 15 is fixedly connected to the fixing frame 14 by bolts. The proximity switch 15 is located directly below the pin rod 7. One end of the pin rod 7 is provided with a chamfer. The proximity switch 15 can be used to detect the movement of the pin rod 7. Thus, when the pin rod 7 approaches the sensing area of the proximity switch 15, the proximity switch 15 can issue an electrical command without contact, without pressure, and without sparks, accurately reflecting the position and stroke of the pin rod 7, that is, for the stroke control of the pin rod 7.

[0022] It should be noted that most of the safety pins on the existing floor hoists adopt conventional separable plug-in safety pins. Such safety pins need to be manually inserted and removed up and down, which is very inconvenient. Moreover, since the safety pins are in a movable state, it is easy to cause safety accidents due to misoperation and the easy opening of the safety pins. In this embodiment, the rotation of the pin rod 7 is controlled through meshing transmission to achieve the purpose of controlling the angle of the limiting plate 8, thereby ensuring that the pin rod 7 in the safety pin is in an unlimited state, and the pin connection state is released or completed by controlling the linear movement of the pin rod 7. This not only eliminates the need for manual insertion and removal up and down and realizes electric control, but also effectively avoids the problem of safety accidents easily occurring due to the random opening of the safety pin, improves the anti-disengagement ability of the safety pin, and uses the proximity switch 15 to detect the movement state of the pin rod 7, so as to accurately reflect the position and stroke of the pin rod 7 and realize the stroke control of the pin rod 7, ensuring the effect of releasing or completing the pin connection state of the safety pin.

[0023] Specifically, in this embodiment, the solution mainly includes a pin rod 7, a gear shaft 9, a gear 11, and a push-pull disk 13. When inserting and removing the pin rod 7 on the floor hoist, the state of the safety pin in the attached Figure 1 description is the pin-connected state. When the pin connection state needs to be released, the pin rod 7 needs to be pulled to one side. Specifically, the servo motor 10 is controlled to drive the gear 11 to rotate through the output end on one side. Through the meshing connection between the gear 11 and the gear shaft 9, the gear shaft 9 rotates synchronously. The inner rod 6 at one end of the gear shaft 9 and the pin rod 7 rotate synchronously, controlling the pin rod 7 to axially rotate 90 degrees. The limiting plate 8 on the pin rod 7 rotates synchronously. At this time, the limiting plate 8 is misaligned with the first support plate 3. After the limiting plate 8 loses the limitation of the first support plate 3, the electric push rod 12 is controlled to pull the push-pull disk 13 to move linearly through the output end on one side. The inner rod 6 moves inwardly into the sleeve 5, and the pin rod 7 moves linearly and is pulled out to release the pin connection state. The proximity switch 15 detects the movement state of the pin rod 7, so as to accurately reflect the position and stroke of the pin rod 7 and realize the stroke control of the pin rod 7.

[0024] In a further preferred embodiment of the present invention, as Figure 1 shown, a through hole through which the pin rod 7 can pass is provided on the outer wall of one side of the limiting block 2.

[0025] In this embodiment, the movement of the pin rod 7 can be limited through the setting of the through hole, thereby ensuring that the pin rod 7 moves along a preset trajectory.

[0026] In a further preferred embodiment of the present invention, as Figure 1 and Figure 4 shown, a through groove into which the gear 11 can be embedded is provided on the outer wall of one side of the sleeve 5. The gear 11 and the gear shaft 9 are connected through tooth meshing.

[0027] In this embodiment, through the setting of the through groove, a part of the gear 11 can be located inside the sleeve 5, and by using the meshing connection, the gear 11 and the gear shaft 9 can be driven, so that the gear shaft 9, as well as the inner rod 6 and the pin rod 7, can rotate.

[0028] In a further preferred embodiment of the present utility model, as Figures 1-2 shown, the length of the gear shaft 9 is eight times the length of the gear 11.

[0029] In this embodiment, by using the difference in the eight-fold length, the separation between the gear shaft 9 and the gear 11 can be avoided, thus ensuring the stable control of the safety pin.

[0030] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0031] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0032] The units described as separate components above may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present invention according to the circumstances or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A safety pin for preventing disengagement of a floor hoist, characterized in that, Including: Substrate (1); A limiting block (2), a first support plate (3) and a second support plate (4) integrally formed on the outer side wall of the substrate (1), and the first support plate (3) is located between the limiting block (2) and the second support plate (4); A sleeve (5) fixed to the inner side walls of the first support plate (3) and the second support plate (4); An inner rod (6) embedded inside the sleeve (5); A pin rod (7) integrally formed at one end of the inner rod (6); A limiting plate (8) welded to the outer side wall of the pin rod (7) at a position between the limiting block (2) and the first support plate (3); A gear shaft (9) fixed to the other end of the inner rod (6) by a key; A servo motor (10) fixed to the outer side wall of the second support plate (4) by bolts; A gear (11) fixed to the output end of the servo motor (10); An electric push rod (12) fixed to the central position at one end of the sleeve (5) by bolts; A push-pull plate (13) fixed to the output end of the electric push rod (12), and the push-pull plate (13) is rotatably connected to the gear shaft (9); A fixing bracket (14) fixed to the outer side wall of the substrate (1) at a position close to the limiting block (2); A proximity switch (15) fixed to the inner side wall of the fixing bracket (14).

2. The anti - detachment safety pin for a floor hoist according to claim 1, characterized in that, A through hole through which the pin rod (7) can penetrate is formed on one outer side wall of the limiting block (2).

3. The anti - detachment safety pin for a floor hoist according to claim 1, characterized in that, A through groove into which the gear (11) can be embedded is formed on one outer side wall of the sleeve (5), and the gear (11) is meshed with the gear shaft (9) through gear teeth.

4. The anti-detachment safety pin for a floor hoist according to claim 1, characterized in that, The proximity switch (15) is located directly below the pin rod (7), and a chamfer is provided at one end of the pin rod (7).

5. The anti - detachment safety pin for a floor hoist according to claim 1, characterized in that, The cross sections of the first support plate (3) and the second support plate (4) are both "concave"-shaped structures.

6. The anti - detachment safety pin for a floor hoist according to claim 1, characterized in that, The length of the gear shaft (9) is eight times the length of the gear (11).

Images