Self-checking and self-locking type mechanical garage safety hook

Abstract

The utility model relates to a self-checking and self-locking type mechanical garage safety hook. An existing safety hook of a mechanical garage is not provided with a detection mechanism for detecting whether the safety hook is reliably opened or not, has no self-locking function and has potential safety hazards. The safety hook comprises a hook base, a safety hook body capable of swinging left and right is arranged on the hook base, and a vehicle carrying plate is arranged on one side of the safety hook body, and is characterized in that the left-right swinging range of the safety hook body is limited, a rotating rod is arranged on the safety hook body and fixed to a ratchet wheel, and the ratchet wheel is arranged on the rotating rod. The safety hook body is further provided with a microswitch and a sliding block, and when the car carrying plate triggers the rotating rod to act, the ratchet wheel changes the position of the sliding block to trigger signal changes of the microswitch. The anti-reversion device can realize automatic locking of the hook in place to prevent reversion, has the advantages of simple structure, reliable action and convenience in maintenance, can automatically detect whether the hook is reliably opened or not, has a self-locking function, and is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of garage safety equipment, in particular to a self-checking and self-locking mechanical garage safety hook. Background Art

[0002] The existing mechanical garages all have safety hooks of an electromagnet structure, which push the safety hooks by the thrust generated by the electromagnets. They do not have a detection mechanism to detect whether the safety hooks have been reliably opened, and have no self-locking function, which poses a safety hazard.

[0003] Application No. 201620723841.X discloses a self-resetting mechanical garage safety hook, which includes a safety hook, a swing piece and a limit pin. The rotating shaft of the swing piece is hinged to the lower part of the safety hook. The limit pin is fixed on the safety hook and located at the upper part of one end of the swing piece. The upper part of the safety hook has a rotating shaft.

[0004] Although the device has a simple structure, when the safety hook is unlocked, the vehicle plate needs to be separated from the safety hook and move downward. The vehicle plate must first be lifted upward by the lifting system. After the safety hook exceeds the limit position of the swing plate, the vehicle plate can be lowered again after the swing plate is reset. The reset of the swing plate only relies on its own weight or spring reset, and the reliability is difficult to guarantee and there is uncertainty. Utility Model Content

[0005] In view of the above problems, the utility model provides a self-checking and self-locking mechanical garage safety hook, which can self-check whether the hook is reliably opened, has a self-locking function, and operates reliably and safely.

[0006] To this end, the utility model adopts the following technical scheme: a self-checking and self-locking mechanical garage safety hook, comprising a hook base, a safety hook body that can swing left and right is arranged on the hook base, a vehicle loading plate is arranged on one side of the safety hook body, and it is characterized in that the left and right swinging range of the safety hook body is limited, a rotating rod is arranged on the safety hook body, the rotating rod is fixed to the ratchet, a micro switch and a slider are also arranged on the safety hook body, and when the vehicle loading plate touches the rotating rod, the ratchet changes the position of the slider to trigger the signal change of the micro switch.

[0007] Preferably, the rotating rod is a cross-shaped rotating rod, the rod member of the rotating rod is in a horizontal state in an initial state, and the vehicle loading plate is located between the safety hook body and the rod member.

[0008] Preferably, a square opening is formed at a corner edge of the upper end of the safety hook body, and a limiting member passes through the opening and is fixed to the safety hook base.

[0009] Preferably, the ratchet wheel is provided with a plurality of tooth grooves evenly distributed thereon, and the slider forms a protrusion at the bottom thereof to match the tooth grooves.

[0010] Preferably, the ratchet has four tooth grooves evenly distributed thereon, each tooth groove is evenly spaced at an angle of 90°, and one side of the tooth groove passes through the center point of the ratchet and is perpendicular to the side intersecting therewith.

[0011] Preferably, a slope and a small plane are formed below the sliding block, and when mated, the small plane completely fits the bottom plane of the tooth groove.

[0012] Preferably, the bottom surface of the safety hook body forms a guiding slope.

[0013] Preferably, the slider and the ratchet are both mounted on the hook body via a pin.

[0014] The utility model can realize automatic locking and anti-reversal when the hook is in place, has the advantages of simple structure, reliable action and convenient maintenance, can self-detect whether the hook is reliably opened, has a self-locking function, is safe and reliable, and has lower cost than the electromagnetic safety hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is an initial state diagram of the utility model.

[0017] Figure 3 It is a rising state diagram of the utility model.

[0018] Figure 4 It is a diagram of the rising middle stage state of the utility model.

[0019] Figure 5 It is a schematic diagram of the matching structure of a ratchet and a slider in the utility model.

[0020] In the figure: 1. hook base 2. hook movable pin 3. anti-overhead member 4. safety hook body 5. rotating rod 6. slider 7. slider pin 8. ratchet pin 9. ratchet 10. micro switch 11. vehicle loading plate 12. small plane 13. bottom plane 14. inclined surface 15. protrusion 16. tooth groove. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments.

[0022] like Figure 1A self-checking and self-locking mechanical garage safety hook shown in the figure includes a hook base 1, on which a safety hook body 4 that can swing left and right is arranged, a vehicle loading plate 11 is arranged on one side of the safety hook body 4, and the left and right swinging range of the safety hook body 4 is limited. A rotating rod 5 is arranged on the safety hook body, and the rotating rod is fixed to the ratchet 9. A micro switch 10 and a slider 6 are also arranged on the safety hook body. When the vehicle loading plate 11 touches the rotating rod, the ratchet 9 changes the position of the slider 6 to trigger the signal of the micro switch 10.

[0023] In one embodiment, the rotating rod is a cross-shaped rotating rod, such as Figure 2 As shown, in the initial state, the rod of the rotating rod is in a horizontal state, and the vehicle loading plate 11 is located between the safety hook body 4 and the rod. In this state, if the vehicle loading plate accidentally falls, the vehicle loading plate can be directly suspended by the safety hook body to ensure safety. The vehicle loading plate has a bent edge at the edge.

[0024] In one embodiment, a square opening is formed at a corner edge of the upper end of the safety hook body 4, and the over-head prevention member 3 passes through the opening and is fixed to the hook base. The over-head prevention member 3 can effectively limit the swing range of both sides of the safety hook body.

[0025] In one embodiment, a plurality of tooth grooves 16 are evenly distributed on the ratchet wheel 9, and a protrusion 15 is formed at the bottom of the slider 6 to engage in the tooth groove. During the rotation of the ratchet wheel, the position of the slider is changed, thereby triggering a micro switch signal.

[0026] like Figure 5 As shown, in one embodiment, the ratchet has four tooth grooves evenly distributed, each tooth groove is evenly spaced at an angle of 90°, and one side of the tooth groove passes through the center point of the ratchet and is perpendicular to the side intersecting with it, so that the slider can slide on the ratchet wheel more easily and the fixed position can be more accurate.

[0027] Specifically, a slope 14 and a small plane 12 are formed below the slider, and when matched, the small plane completely fits the bottom plane 13 of the tooth groove. This structure can reduce the wear of the slider on the ratchet when it falls, facilitates the fit of the vertical edge of the ratchet, and better fixes the ratchet.

[0028] Specifically, the bottom surface of the safety hook body forms a guiding inclined surface, and the vehicle loading plate is guided by the inclined surface before returning to its original position.

[0029] Specifically, the slider is installed on the hook body through the slider pin 7, and the ratchet is installed on the hook body through the ratchet pin 8.

[0030] The working process of this utility model is as follows:

[0031] When the vehicle loading plate is lowered, the vehicle loading plate is first slightly raised to lift the cross rod, which drives the ratchet 9 to rotate together. When it reaches a certain angle, the lifted slider 6 falls freely to fix the ratchet 9. At the same time, the micro switch is disconnected, giving a signal, indicating that the cross rod has been rotated to a fixed angle, forming an inclined plane for the vehicle loading plate to be lowered, and the vehicle loading plate can be lowered. Figure 1 .

[0032] The loading plate starts to descend and hits the inclined surface formed by the rod of the cross rotating rod. The ratchet 9 is fixed by the slider 6 and cannot rotate in the opposite direction together with the cross rotating rod. Therefore, the safety hook body 4 is driven to move outward and away from the loading plate, thereby completing the descent of the loading plate.

[0033] like Figure 3 and Figure 4 As shown in the figure, when the vehicle loading plate rises back to the original position, it first contacts the guide slope under the safety hook, pushes the hook body to move outward, and then hits the cross-rotating rod in the inclined state. The ratchet 9 can rotate unidirectionally in this direction, and the anti-overhead member 3 prevents the safety hook body 4 from moving together, so the slider 6 is lifted up and hits the micro switch again, the cross-rotating rod returns to the horizontal state, and the vehicle loading plate returns to the initial position.

[0034] The utility model has the functions of self-detection and self-locking, and compared with the traditional electromagnetic control hook, it reduces the cost and processing difficulty, and the mechanical structure does not have the failure caused by the influence of the electromagnetic device, thereby improving the overall stability.

[0035] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A self-checking and self-locking mechanical garage safety hook, comprising a hook base (1), a safety hook body (4) capable of swinging left and right is arranged on the hook base (1), a vehicle loading plate (11) is arranged on one side of the safety hook body (4), and the characteristics are as follows: The left-right swing range of the safety hook body (4) is limited. A rotating rod (5) is arranged on the safety hook body. The rotating rod is fixed to a ratchet (9). A micro switch (10) and a slider (6) are also arranged on the safety hook body. When the vehicle loading plate (11) triggers the rotating rod to move, the ratchet (9) changes the position of the slider (6) to trigger the signal change of the micro switch (10).

2. A self-checking and self-locking mechanical garage safety hook according to claim 1, characterized in that The rotating rod is a cross-shaped rotating rod, and in an initial state, the rod member of the rotating rod is in a horizontal state, and the vehicle loading plate (11) is located between the safety hook body (4) and the rod member.

3. A self-checking and self-locking mechanical garage safety hook according to claim 1 or 2, characterized in that A square opening is formed at a corner edge of the upper end of the safety hook body (4), and a limiting member passes through the opening and is fixed to the hook base.

4. A self-checking and self-locking mechanical garage safety hook according to claim 3, characterized in that The ratchet wheel (9) is evenly distributed with a plurality of tooth grooves (16), and the slider (6) is formed with a protrusion (15) at the bottom to match the tooth grooves.

5. A self-checking and self-locking mechanical garage safety hook according to claim 4, characterized in that The ratchet has four tooth grooves evenly distributed thereon, each tooth groove is evenly spaced at an angle of 90°, and one side of the tooth groove passes through the center point of the ratchet and is perpendicular to the side intersecting therewith.

6. A self-checking and self-locking mechanical garage safety hook according to claim 5, characterized in that A slope (14) and a small plane (12) are formed below the slider, and when mated, the small plane completely fits the bottom plane (13) of the tooth groove.

7. A self-checking and self-locking mechanical garage safety hook according to claim 1, characterized in that The bottom surface of the safety hook body forms a guiding inclined surface.

8. The self-checking and self-locking mechanical garage safety hook according to claim 1 is characterized in that The sliding block and the ratchet are both mounted on the hook body via a pin shaft.

Images