A traction machine with an encoder mounted on the brake.

Abstract

This utility model discloses a traction machine with an encoder mounted on a brake, comprising a base, a brake, and an encoder. The stator of the encoder is connected and fixed to the coil seat of the brake. The coil seat has a first mounting countersunk hole for mounting a first hollow bolt and a second mounting countersunk hole for mounting a second hollow bolt axially. The base has a first threaded hole and a pin hole with a second threaded hole. The coil seat has a first locking bolt and a second locking bolt. The locking bolt passes through the first hollow bolt and the first threaded hole and is threadedly connected, so that the end face of the first hollow bolt contacts the base. The end face of the second hollow bolt extends into a hollow pin. The second locking bolt passes through the second hollow bolt and the pin hole and is threadedly connected to the second threaded hole, so that the hollow pin is inserted into the pin hole and the end face of the second hollow bolt contacts the base. In this utility model, the hollow pin and the pin hole work together to act as a pin, resisting movement of the brake and preventing excessive movement of the brake from damaging the encoder.

Description

Technical Field

[0001] This utility model relates to the field of traction machine technology, specifically to a traction machine with an encoder mounted on the brake. Background Technology

[0002] Existing brakes typically generate friction by having the end face of a hollow bolt contact the base or end cover, thus balancing the friction force generated by the friction disc during braking. However, for elevator emergency braking, especially 125% emergency stop, the friction force provided between the hollow bolt end face and the base or end cover is insufficient to balance the friction force generated by the brake disc in the aforementioned brake and traction machine mounting structure. As a result, the brake will move irregularly, causing the encoder stator mounted on it to move. Since the encoder rotor is mounted on the traction machine shaft, the encoder stator and rotor will become misaligned, damaging the encoder. Utility Model Content

[0003] The purpose of this invention is to provide a traction machine in which the encoder is mounted on the brake and is not easily damaged.

[0004] The purpose of this utility model is achieved as follows.

[0005] A traction machine with an encoder mounted on a brake includes a brake and an encoder mounted on a base or end cover. The brake includes a coil seat, and the stator of the encoder is connected and fixed to the coil seat. The coil seat has a first mounting countersunk hole in the axial direction. A first hollow bolt is installed in the first mounting countersunk hole near one end of the base or end cover. A first threaded hole is provided on the base or end cover corresponding to the first hollow bolt. The coil seat has a first locking bolt, which passes through the first hollow bolt and the first threaded hole and is threadedly connected, so that the end face of the first hollow bolt contacts the base or end cover. The coil seat has a second mounting countersunk hole in the axial direction. A second hollow bolt is installed in the second mounting countersunk hole near one end of the base or end cover. A hollow pin extends from the end face of the second hollow bolt. A pin hole is provided on the base or end cover corresponding to the second hollow bolt. A second threaded hole is provided in the pin hole. The coil seat has a second locking bolt, which passes through the second hollow bolt and the pin hole and is threadedly connected to the second threaded hole, so that the end face of the second hollow bolt contacts the base or end cover, and the hollow pin is inserted into the pin hole.

[0006] Furthermore, the hollow pin and the pin hole have a clearance fit, facilitating the positioning and installation of the second hollow bolt and pin hole.

[0007] Furthermore, the second hollow bolt and its mating pin hole have two or more connections. The second hollow bolt and pin hole have a clearance fit, but through multiple sets of second hollow bolts and pin holes, the overall movement of the brake is controlled within a very small range, preventing damage to the encoder.

[0008] Furthermore, the pin hole and the second screw hole are coaxially arranged.

[0009] Furthermore, the first and second locking bolts are identical in shape and size, and the first and second mounting countersunk holes are identical in shape and size. This reduces manufacturing processes and the number of parts, thereby lowering production costs.

[0010] Furthermore, a hollow pin extends from the end face of the first hollow bolt to form the second hollow bolt. The second hollow bolt integrates the dual functions of a pin and an adjusting bolt, simplifying the process and reducing production costs.

[0011] The overall structure and process of this utility model are simple. The end face of the first hollow bolt is still in contact with the end cover or the base to adjust the working clearance of the brake. The hollow pin of the second hollow bolt extends into the pin hole machined in the base or end cover, and acts as a pin to resist the movement of the brake. After the brake is locked by screws and engaged by pins, the movement of the brake is completely controlled, avoiding damage to the encoder caused by excessive movement of the brake during emergency stop. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of Example 1.

[0013] Figure 2 for Figure 1 Enlarged view of A in the middle.

[0014] Figure 3 This is a cross-sectional structural diagram of the brake in Embodiment 1. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Example 1, see Figure 1-3 As shown, a traction machine with an encoder mounted on a brake includes a traction machine 1 base 11 and a rotating shaft 12, a brake 2 and an encoder 3.

[0017] Brake 2 includes coil seat 21, brake spring 22, armature 23, and friction disc 24. The stator 31 of encoder 3 is fixed in the fixing hole 20 at the center of coil seat 21 by a bracket. The rotor of encoder 3 is connected and fixed to the shaft 12 of traction machine 1. Coil 27 is provided in coil seat 21. Brake 2 is prior art, and its specific working principle will not be described in detail here.

[0018] The coil base 21 has a first mounting countersunk hole 25 in the area axially above the armature 23 and friction disc 24. A first hollow bolt 4 is installed in the first mounting countersunk hole 25 near the upper end of the base 11. A first screw hole 13 is provided on the base 11 or end cover corresponding to the first hollow bolt 4. The coil base 21 is provided with a first locking bolt 5. The locking bolt passes through the first hollow bolt 4 and the first screw hole 13 and is threadedly connected, so that the end face of the first hollow bolt 4 contacts the base 11.

[0019] The coil base 21 has a second mounting countersunk hole 26 in the area axially opposite to the armature 23 and friction disc 24. A second hollow bolt 6 is installed in the second mounting countersunk hole 26 near one end of the base 11 or end cover. A hollow pin 61 extends from the end face of the second hollow bolt 6. A pin hole 14 is provided on the base 11 or end cover corresponding to the second hollow bolt 6. A second threaded hole 15 is provided in the pin hole 14, and the pin hole 14 and the second threaded hole 15 are coaxially arranged. The coil base 21 has a second locking bolt 7, which passes through the second hollow bolt 6 and the pin hole 14 and is threaded into the second threaded hole 15, so that the end face of the second hollow bolt 6 contacts the base 11 or end cover, and the hollow pin 61 is inserted into the pin hole 14. The hollow pin 61 and the pin hole 14 are clearance-fitted. In this embodiment, there are two or more second hollow bolts 6 and mating pin holes 14.

[0020] Preferably, the first locking bolt 5 and the second locking bolt 7 are the same in shape and size, and the first mounting countersunk hole 25 and the second mounting countersunk hole 26 are the same in shape and size. The hollow pin portion 61 extending from the end face of the first hollow bolt 4 constitutes the second hollow bolt 6.

[0021] The structure of this utility model is based on a completely new design concept. Compared with the existing technology, the production process is simple with modifications to the overall structure. The end face of the first hollow bolt 4 still contacts the base 11, retaining the function of adjusting the working clearance of the brake 2. The second hollow bolt 6 also functions as a pin, resisting the frictional force during braking and preventing the brake 2 and the stator 31 of the encoder 3 mounted on it from undergoing large displacement, thereby damaging the encoder 3.

[0022] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0023] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0024] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0025] Terms used in this invention, such as "approximately," "generally," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. A traction machine with an encoder mounted on a brake, comprising a brake and an encoder mounted on a base or end cover, the brake including a coil holder, the stator of the encoder being connected and fixed to the coil holder, the coil holder having a first mounting countersunk hole axially thereon, a first hollow bolt being mounted in the first mounting countersunk hole near one end of the base or end cover, a first threaded hole corresponding to the first hollow bolt on the base or end cover, the coil holder having a first locking bolt, the locking bolt being threaded through the first hollow bolt and the first threaded hole, so that the end face of the first hollow bolt contacts the base or end cover, characterized in that... The coil holder has a second mounting countersunk hole in the axial direction. A second hollow bolt is installed in the second mounting countersunk hole near one end of the base or end cover. A hollow pin extends from the end face of the second hollow bolt. The base or end cover has a pin hole corresponding to the second hollow bolt. A second threaded hole is provided in the pin hole. The coil holder has a second locking bolt. The second locking bolt passes through the second hollow bolt and the pin hole and is threaded into the second threaded hole, so that the end face of the second hollow bolt contacts the base or end cover, and the hollow pin is inserted into the pin hole.

2. The encoder-mounted hoist of claim 1, wherein, The hollow pin and the pin hole are fitted with a clearance.

3. The encoder-mounted hoist of claim 2, wherein, The second hollow bolt and its mating pin holes have two or more.

4. The encoder-mounted hoist of claim 1, wherein, The pin hole and the second screw hole are coaxially arranged.

5. The encoder-mounted hoist of claim 1, wherein, The first and second locking bolts are the same in shape and size, and the first and second mounting countersunk holes are the same in shape and size.

6. The encoder-mounted hoist of claim 5, wherein, The hollow bolt's end face extends into a hollow pin portion, forming the second hollow bolt.

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