Mounting structure of large-load cargo elevator traction machine encoder

Abstract

The utility model discloses a mounting structure of a large-load cargo elevator traction machine encoder, which comprises a shell, a main shaft is rotatably arranged in the shell, the main shaft is coaxially connected with a brake disc, an armature corresponding to the brake disc is arranged on one side of the brake disc, an electromagnet is arranged on one side, far away from the brake disc, of the armature, and the electromagnet is connected with the main shaft. An electromagnet is arranged on the main shaft, a spring is arranged between the electromagnet and the armature, an encoder is arranged at one end of the main shaft, a pin shaft of the encoder is coaxially connected with the main shaft, and a support used for fixing the encoder is arranged on the electromagnet. The beneficial effects of the utility model are that when the encoder is subjected to an axial force, the stress generated by the spring piece can counteract the axial force borne by the encoder, thereby reducing the damage of the axial force to the encoder.

Description

Technical Field

[0001] The utility model belongs to the field of traction machines, and in particular relates to a mounting structure of an encoder for a traction machine of a heavy-load freight elevator. Background Art

[0002] The encoder is a component in the motion control system, which is used to feedback signals to the driver for precise speed and position control. The installation requirements of the encoder are very important. Improper installation will cause the elevator to be uneven, the position to be identified is inaccurate, and the traction motor to be very noisy. The uneven fixing method of the encoder can directly affect the life and performance of the encoder. The greater the load of the elevator, the greater the axial force generated by its main shaft. The axial force is transmitted to the encoder, causing the encoder to be non-concentric and out of step. Utility Model Content

[0003] The utility model aims to provide a mounting structure for a heavy-load freight elevator traction machine encoder.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A mounting structure for an encoder of a heavy-duty freight elevator traction machine, comprising a shell, a main shaft rotatably arranged in the shell, the main shaft being coaxially connected to a brake disc, an armature corresponding to the brake disc being arranged on one side of the brake disc, an electromagnet being arranged on the side of the armature away from the brake disc, a spring being arranged between the electromagnet and the armature, an encoder being arranged at one end of the main shaft, the pin shaft of the encoder being coaxially connected to the main shaft, and a bracket for fixing the encoder being arranged on the electromagnet.

[0006] Preferably, the pin shaft is provided with a thread groove along its axial direction, the main shaft is provided with a tapered hole corresponding to the pin shaft, and a thread column corresponding to the thread groove is arranged in the tapered hole.

[0007] Preferably, the encoder and the bracket are connected by expansion bolts.

[0008] Preferably, the bracket is connected to a connecting piece by bolts and the connection is coated with thread glue, and the other end of the connecting piece is connected to the electromagnet by bolts.

[0009] Preferably, the connecting members are spring sheets and are distributed on the bracket in a circular array.

[0010] Preferably, the spring sheet is in an S-shape, and a notch is provided on the spring sheet running through the spring sheet in its thickness direction.

[0011] The beneficial effects of the utility model are as follows: the spring sheet can rebound quickly after being subjected to force, thereby preventing the axial force from being transmitted to the encoder, thereby damaging the encoder bearing or other components; it is easy to install and maintenance-free, and there is no need to calibrate the mounting hole during installation; in order to extend the service life of the encoder, the spring sheet has a large rebound force, and when the encoder is subjected to an axial force, the stress generated by the spring sheet will offset the axial force exerted on the encoder, thereby reducing the damage of the axial force to the encoder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a partial sectional view of the front side of the utility model.

[0013] Figure 2 yes Figure 1 A is an enlarged schematic diagram.

[0014] Figure 3 It is a right side view of the bracket in the utility model.

[0015] Among them: a main shaft 10, a brake disc 12, an armature 14, an electromagnet 16, a spring 18, an encoder 20, a pin 22, a tapered hole 24, a bracket 26, a spring sheet 28, and a notch 30. DETAILED DESCRIPTION

[0016] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0017] like Figures 1 to 3 As shown, the utility model is an installation structure of a large-load freight elevator traction machine encoder, including a shell, a main shaft 10 is rotatably arranged in the shell, the main shaft 10 is coaxially connected to the brake disc 12, an armature 14 corresponding to the brake disc 12 is arranged on one side of the brake disc 12, an electromagnet 16 is arranged on the side of the armature 14 away from the brake disc 12, a spring 18 is arranged between the electromagnet 16 and the armature 14, an encoder 20 is arranged at one end of the main shaft 10, a pin shaft 22 of the encoder 20 is coaxially connected to the main shaft 10, and a bracket 26 for fixing the encoder 20 is arranged on the electromagnet 16; the bracket 26 is arranged on the electromagnet 16 to ensure the stability of the encoder 20, and the pin shaft 22 is coaxially connected to the main shaft 10, which can reduce the encoder 20 to facilitate accurate measurement and feedback signals.

[0018] The pin shaft 22 is provided with a thread groove along its axial direction, the spindle 10 is provided with a tapered hole 24 corresponding to the pin shaft 22, and a threaded column corresponding to the thread groove is arranged in the tapered hole 24; the encoder 20 and the spindle 10 are threadedly connected, so that the encoder 20 will not lose step.

[0019] The encoder 20 and the bracket 26 are connected by expansion bolts; the encoder 20 is fixed to the bracket 26 by the expansion bolts to prevent the encoder 20 body from rotating.

[0020] The bracket 26 is connected to a connector by bolts and a thread sealant is applied at the connection. The other end of the connector is connected to the electromagnet 16 by bolts. The bracket 26 is connected to the electromagnet 16 by the connector to fix the encoder 20. The thread sealant can reduce the impact and vibration of the screws and reduce the possibility of them loosening or going offline.

[0021] The connecting member is a spring sheet 28 and is distributed on the bracket 26 in a circumferential array; the spring sheet 28 can absorb the impact of sudden movement of the motor shaft, which can extend the life of the encoder 20 bearing.

[0022] The spring sheet 28 is in an S-shape, and a slot 30 is provided on the spring sheet 28 in the thickness direction thereof; the spring sheet 28 is bent into an S-shape to have a greater resilience and to offset more axial force, and the slotted spring sheet 28 better fixes the bracket 26 on the electromagnet 16 .

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mounting structure for a heavy-duty freight elevator traction machine encoder, characterized in that: It includes a shell, a main shaft is rotatably arranged in the shell, the main shaft is coaxially connected to a brake disc, an armature corresponding to the brake disc is arranged on one side of the brake disc, an electromagnet is arranged on the side of the armature away from the brake disc, a spring is arranged between the electromagnet and the armature, an encoder is arranged at one end of the main shaft, the pin shaft of the encoder is coaxially connected to the main shaft, and a bracket for fixing the encoder is arranged on the electromagnet.

2. The installation structure of the encoder for the heavy-duty freight elevator traction machine according to claim 1 is characterized in that: The pin shaft is provided with a thread groove along its axial direction, the main shaft is provided with a tapered hole corresponding to the pin shaft, and a thread column corresponding to the thread groove is arranged in the tapered hole.

3. The installation structure of the encoder for the heavy-duty freight elevator traction machine according to claim 1 is characterized in that: The encoder and the bracket are connected via expansion bolts.

4. The installation structure of the encoder for the heavy-duty freight elevator traction machine according to claim 1 is characterized in that: The bracket is connected with a connecting piece by bolts and a thread glue is coated on the connecting part, and the other end of the connecting piece is connected to the electromagnet by bolts.

5. The installation structure of the encoder for the heavy-duty freight elevator traction machine according to claim 4 is characterized in that: The connecting members are spring sheets and are distributed on the bracket in a circumferential array.

6. The installation structure of the encoder for the heavy-duty freight elevator traction machine according to claim 5 is characterized in that: The spring sheet is in an S-shape and is provided with a notch running through the spring sheet in its thickness direction.

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