Anti-falling mechanism of elevator

Abstract

The utility model relates to an elevator anti-falling mechanism which comprises a lifting frame, a lifting platform, a driving assembly and a locking assembly, the lifting platform is movably installed on the lifting frame, the driving assembly and the locking assembly are both installed on the lifting platform, and the driving assembly comprises a driving motor and a driving gear. When the anti-falling mechanism of the elevator is used, the driving motor drives the driving gear to rotate and is matched with the lifting rack to enable the lifting platform to move up and down on the lifting frame, and the speed measuring gear is matched with the speed measuring motor to measure speed in the up-down moving process of the lifting platform, so that the speed measuring motor and the driving motor synchronously run; when the driving motor loses power and falls, the speed measuring motor detects that the speed of the lifting platform is too high through the speed measuring gear and transmits a signal to the locking motor, so that the locking motor locks the locking gear, the locking gear is clamped on the lifting rack to form locking, the lifting platform stops falling, and timely locking is achieved to prevent goods from falling.

Description

Technical Field

[0001] The utility model belongs to the technical field of transportation, and in particular relates to an anti-falling mechanism for a hoist. Background Art

[0002] An elevator is a device used in industrial production to transport materials from low places to high places or from high places to low places. For example, an elevator can transport fertilizers from the ground to trucks, and can also transport fertilizers from trucks to the ground. The use of elevators can not only reduce the manpower burden of users, but also shorten the working hours of users. Therefore, they are widely used in industrial production.

[0003] The working principle of the elevator is: the material is placed on the elevator hopper, and the hopper slides from bottom to top or from top to bottom along the lifting track under the action of the chain sprocket to realize the transportation of the material. If the elevator loses power, the goods will fall rapidly under the action of gravity, which is very likely to cause equipment damage or even casualties. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a hoist anti-falling mechanism, which can be locked in time to prevent the cargo from falling.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a hoist anti-fall mechanism, including a lifting frame, a lifting platform, a driving assembly and a locking assembly, the lifting platform is movably installed on the lifting frame, the driving assembly and the locking assembly are both installed on the lifting platform, the driving assembly includes a driving motor and a driving gear, the driving gear is rotatably installed on the lifting platform and is transmission-connected with the driving motor, the lifting frame is installed with a lifting rack along its own height, the driving gear is meshed with the lifting rack, the locking assembly includes a locking motor, a locking gear, a speed measuring motor and a speed measuring gear, the locking motor and the speed measuring motor are both installed on the lifting platform, the speed measuring motor is connected to the locking motor for signal control transmission, the locking gear is coaxially connected to the locking motor and meshed with the lifting rack, the speed measuring gear is coaxially connected to the speed measuring motor and meshed with the lifting rack.

[0006] A driving ring is sleeved on the rotating shaft of the locking motor, and the driving ring is signal-controlledly connected to a locking cylinder. The locking cylinder is installed on a lifting platform, and the output end is arranged toward the lifting rack. A locking component is installed at the output end of the locking cylinder.

[0007] The locking assembly includes a connecting plate and a clamping plate, wherein the connecting plate is mounted on the output end of the locking cylinder, the clamping plate is slidably mounted on the connecting plate, and a locking tooth is provided on the side of the clamping plate facing the lifting rack, and the locking tooth is meshed with the lifting rack.

[0008] The connecting plate is provided with a buffer spring, and the buffer spring is arranged to abut against the top of the clamping plate.

[0009] The locking teeth are wrapped with buffer rubber.

[0010] The lifting frame is located below the lifting platform and is provided with a buffer block.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model discloses an anti-falling mechanism for a hoist. When in use, a driving motor drives a driving gear to rotate, and cooperates with a lifting rack to make the lifting platform move up and down on the lifting frame. The speed measuring gear cooperates with the speed measuring motor to measure the speed during the up and down movement of the lifting platform, so that the speed measuring motor and the driving motor operate synchronously. When the driving motor loses power and falls, the speed measuring motor detects that the speed of the lifting platform is too fast through the speed measuring gear and transmits a signal to the locking motor, so that the locking motor locks the locking gear, so that the locking gear is stuck on the lifting rack to form a lock, so that the lifting platform stops falling, and timely locking is achieved to prevent the goods from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the anti-falling mechanism of the utility model;

[0014] Figure 2 This is a schematic diagram of the back structure of the anti-fall mechanism of the utility model;

[0015] Figure 3 It is an enlarged structural schematic diagram of the locking assembly of the utility model.

[0016] Markings in the figure: 1. lifting frame; 2. lifting platform; 3. driving motor; 4. driving gear; 5. lifting rack; 6. locking motor; 7. locking gear; 8. speed measuring motor; 9. speed measuring gear; 10. driving ring; 11. locking cylinder; 12. connecting plate; 13. clamping plate; 14. locking teeth; 15. buffer spring; 16. buffer rubber; 17. buffer block. DETAILED DESCRIPTION

[0017] In order to make the above features and advantages of the present invention more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0018] like Figure 1-Figure 3As shown, this embodiment provides an anti-fall mechanism for a hoist, comprising a lifting frame 1, a lifting platform 2, a driving assembly and a locking assembly. The lifting platform 2 is movably installed on the lifting frame 1, and the driving assembly and the locking assembly are both installed on the lifting platform 2. The driving assembly comprises a driving motor 3 and a driving gear 4. The driving gear 4 is rotatably installed on the lifting platform 2 and is transmission-connected with the driving motor 3. The lifting frame 1 is provided with a lifting rack 5 along its own height, and the driving gear 4 is meshed with the lifting rack 5. The locking assembly comprises a locking motor 6, a locking gear 7, a speed measuring motor 8 and a speed measuring gear 9. The locking motor 6 and the speed measuring motor 8 are both installed on the lifting platform 2. The speed measuring motor 8 is connected to the locking motor 6 for signal control transmission. The locking gear 7 is coaxially connected to the locking motor 6 and meshed with the lifting rack 5. The speed measuring gear 9 is coaxially connected to the speed measuring motor 8 and meshed with the lifting rack 5. When in use, the driving motor 3 drives the driving gear 4 to rotate, and cooperates with the lifting rack 5 to make the lifting platform 2 move up and down on the lifting frame 1, and the speed measuring gear 9 cooperates with the speed measuring motor 8 to measure the speed during the up and down movement of the lifting platform 2, so that the speed measuring motor 8 and the driving motor 3 operate synchronously. When the driving motor 3 loses power and falls, the speed measuring motor 8 detects that the speed of the lifting platform 2 is too fast through the speed measuring gear 9 and transmits a signal to the locking motor 6, so that the locking motor 6 locks the locking gear 7, so that the locking gear 7 is stuck on the lifting rack 5 to form a lock, so that the lifting platform 2 stops falling, and timely locking is achieved to prevent the goods from falling.

[0019] Furthermore, a drive ring 10 is sleeved on the rotating shaft of the locking motor 6, and the drive ring 10 is connected to the locking motor 6 by signal control. The drive ring 10 is connected to the locking cylinder 11 by signal control. The locking cylinder 11 is installed on the lifting platform 2, and the output end is arranged toward the lifting rack 5. The output end of the locking cylinder 11 is installed with a locking assembly. Specifically, the locking assembly includes a connecting plate 12 and a clamping plate 13. The connecting plate 12 is installed on the output end of the locking cylinder 11, and the clamping plate 13 is slidably installed on the connecting plate 12. The clamping plate 13 is provided with a locking tooth 14 on the side facing the lifting rack 5, and the locking tooth 14 is meshed with the lifting rack 5. The connecting plate 12 is provided with a buffer spring 15, and the buffer spring 15 is arranged to abut against the top of the clamping plate 13. The locking tooth 14 is wrapped with a buffer rubber 16. When the locking motor 6 is started, the signal is transmitted to the driving ring 10, and then the driving ring 10 drives the locking cylinder 11 to push the connecting plate 12 to drive the clamping plate 13 to move toward the lifting rack 5, so that the locking teeth 14 on the clamping plate 13 are clamped on the lifting rack 5 to form a secondary lock, and after the secondary locking, the buffer spring 15 plays a buffering role to prevent the locking teeth 14 from breaking due to excessive impact after locking.

[0020] Furthermore, a buffer block 17 is installed on the lifting frame 1 below the lifting platform 2 to provide a buffer force when the lifting platform 2 descends.

[0021] The above shows and describes the basic principles and main features of the invention and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the invention, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A hoist anti-fall mechanism, characterized in that: It includes a lifting frame, a lifting platform, a driving assembly and a locking assembly. The lifting platform is movably installed on the lifting frame, and the driving assembly and the locking assembly are both installed on the lifting platform. The driving assembly includes a driving motor and a driving gear. The driving gear is rotatably installed on the lifting platform and is transmission-connected with the driving motor. The lifting frame is installed with a lifting rack along its own height, and the driving gear is meshed with the lifting rack. The locking assembly includes a locking motor, a locking gear, a speed measuring motor and a speed measuring gear. The locking motor and the speed measuring motor are both installed on the lifting platform. The speed measuring motor is connected to the locking motor for signal control transmission. The locking gear is coaxially connected to the locking motor and meshed with the lifting rack. The speed measuring gear is coaxially connected to the speed measuring motor and meshed with the lifting rack.

2. The anti-falling mechanism for a hoist according to claim 1, characterized in that: A driving ring is sleeved on the rotating shaft of the locking motor, and the driving ring is signal-controlledly connected to a locking cylinder. The locking cylinder is installed on a lifting platform, and the output end is arranged toward the lifting rack. A locking component is installed at the output end of the locking cylinder.

3. The anti-falling mechanism for a hoist according to claim 2, characterized in that: The locking assembly includes a connecting plate and a clamping plate, wherein the connecting plate is mounted on the output end of the locking cylinder, the clamping plate is slidably mounted on the connecting plate, and a locking tooth is provided on the side of the clamping plate facing the lifting rack, and the locking tooth is meshed with the lifting rack.

4. The anti-falling mechanism for a hoist according to claim 3, characterized in that: The connecting plate is provided with a buffer spring, and the buffer spring is arranged to abut against the top of the clamping plate.

5. The anti-falling mechanism for a hoist according to claim 3, characterized in that: The locking teeth are wrapped with buffer rubber.

6. The anti-falling mechanism for a hoist according to claim 1, characterized in that: The lifting frame is located below the lifting platform and is provided with a buffer block.

Images