Quickly adjustable traction machine brake monitoring switch and traction machine brake

Abstract

The present invention provides a quickly adjustable traction machine brake monitoring switch and traction machine brake, comprising a yoke end base plate, a microswitch, a rotating plate, a rotating shaft, a reset torsion spring, an adjustable bolt, and an armature end base plate. The microswitch is fixed to the yoke end base plate, the tail end of the rotating plate is rotatably mounted on the yoke end base plate via a rotating shaft, the front end of the rotating plate corresponds to the contact arrangement of the microswitch, the rotating shaft is provided with a reset torsion spring that drives the rotating plate to reset, and the yoke end base plate is also provided with double-sided limit baffles for limiting the rotation angle of the rotating plate; the adjustable bolt is mounted on the armature end base plate, the adjusting end of the adjustable bolt is arranged corresponding to the middle outer side of the rotating plate, and the adjusting end of the adjustable bolt is adjustable in length. The main electronic components are mounted on a base plate, and the mounting position is determined at the factory. When installing on the brake, no separate adjustments are required; only the adjustable bolt needs to be fine-tuned to achieve quick adjustment.

Description

Technical Field

[0001] The present invention relates to the technical field of special equipment, in particular to a quickly adjustable traction machine brake monitoring switch and a traction machine brake. Background Art

[0002] The traction machine brake is a critical safety component in the elevator system. When the brake is energized, it is in the open state; upon power failure, it immediately switches to the brake state. To accurately monitor the traction machine's braking status during elevator operation, a monitoring switch is installed on the brake. When the brake is energized, the monitoring switch is immediately triggered, simultaneously sending an open signal to the elevator control system. Upon power failure, the monitoring switch is immediately reset, simultaneously sending a braking signal to the elevator control system. The monitoring switch's signal feedback must be accurate and timely, placing high demands on its installation and adjustment.

[0003] The current monitoring switch is as follows Figure 1 As shown, multiple split parts are fixed to the brake, such as the micro switch 41, the shift block 42, the spring fixing block 43, the push rod 44, etc., which are respectively installed at different positions of the brake armature 9 and the brake yoke 8 by bolts. Then, the positional relationship of each part is adjusted to correspond through precise adjustment until they can be accurately matched. The installation process is cumbersome, and since the machining accuracy of the mounting hole on the brake is not high, the monitoring switch after assembly is not easy to adjust, resulting in feedback signal errors and insufficient feedback, which causes the elevator to fail to operate normally.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and to provide a traction machine brake monitoring switch and a traction machine brake that integrate most of the parts of the monitoring switch on a unified installation platform. The installation platform provides part of the functions of the monitoring switch, so that the monitoring switch does not need to be adjusted separately for each part during installation, and the installation accuracy of the monitoring switch can be ensured.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a quickly adjustable traction machine brake monitoring switch, including a yoke end base plate, a microswitch, a rotating plate, a rotating shaft, a reset torsion spring, an adjustable bolt and an armature end base plate, the microswitch is fixed on the yoke end base plate, the tail end of the rotating plate is rotatably mounted on the yoke end base plate through the rotating shaft, the front end of the rotating plate corresponds to the contact setting of the microswitch, the rotating shaft is provided with a reset torsion spring for driving the rotating plate to reset, and the yoke end base plate is also provided with a double-sided limit baffle for limiting the rotation angle of the rotating plate. In the reset state, the front end of the rotating plate is separated from the microswitch; the adjustable bolt is installed on the armature end base plate, and the adjusting end of the adjustable bolt corresponds to the middle outer side of the rotating plate. The length of the adjusting end of the adjustable bolt is adjustable. In the attracted state, the adjustable bolt pushes the front end of the rotating plate to touch the contact of the microswitch.

[0007] Based on the above, the yoke end bottom plate is an integrated bottom plate, a U-shaped bend is provided on the yoke end bottom plate for the rotating shaft, an opening is provided on the yoke end bottom plate for locking one end of the reset torsion spring, and the other end of the reset torsion spring is clamped on the inner side of the rotating plate.

[0008] Based on the above, the middle portion of the rotating plate is configured as a U-shaped groove, and a pair of connecting ears are provided at the tail end of the rotating plate, and the pair of connecting ears are rotatably matched with the rotating shaft.

[0009] Based on the above, a locally raised abutting point is provided on the outer side of the rotating plate corresponding to the adjustable bolt.

[0010] Based on the above, the front end of the rotating plate is a flat plate structure.

[0011] Based on the above, a first limiting plate and a second limiting plate are respectively provided on the front and rear sides of the yoke end bottom plate corresponding to the rotating plate, and the first limiting plate and the second limiting plate are offset in the transverse direction.

[0012] Based on the above, threaded holes for installation and positioning are provided on the bottom plate of the yoke end.

[0013] Based on the above, the yoke end bottom plate has a multi-bend structure, the threaded hole is arranged at the bottom of the bend, and the micro switch and the rotating plate are installed at the top of the bend.

[0014] A traction machine brake comprises a brake yoke, a brake armature and a quickly adjustable traction machine brake monitoring switch, wherein the yoke end base is fixed to the top end of the brake yoke, the armature end base is fixed to the top end of the brake armature, and the adjusting end of the adjustable bolt is arranged corresponding to the middle outer side of the rotating plate; when the brake is energized, the yoke and the armature are attracted, and the adjustable bolt drives the rotating plate to rotate and touch the contacts of the micro switch; when the brake is de-energized, the yoke and the armature are disconnected, the adjustable bolt leaves the rotating plate, the rotating plate is reset, and the micro switch is reset.

[0015] Based on the above, the yoke end base plate is fixed to the brake yoke by bolts, and the armature end base plate is fixed to the brake armature by bolts.

[0016] The present invention has substantial features and advancements over the prior art. Specifically, the present invention has the following advantages:

[0017] 1. This solution overcomes the cumbersome problem of separate installation of the traditional monitoring switch on the brake, which requires adjusting the installation position separately. The components are integrated on two base plates. The micro switch and the rotating plate are integrated on the base plate at the yoke end, and the adjustable bolt is integrated on the base plate at the armature end. Since the base plate is an integrated structure, it can be manufactured by punching and stamping on machine tools during the factory process, and the precision is guaranteed. This enables the monitoring switch to achieve high matching precision when it leaves the factory. The two base plates are then installed on the armature and yoke of the brake respectively. The entire adjustment process is completed by simply fine-tuning the extended length of the adjustable bolt, which is very quick. In after-sales service, only all parts including the base plate need to be replaced as a whole, without the need for cumbersome secondary adjustments.

[0018] 2. Since the base plate is used as the carrier, the connection between the base plate and the brake only requires a small number of holes, reducing the processing workload of the brake and monitoring switch;

[0019] 3. Since the workload of adjustments is greatly reduced, the working time of installers is greatly shortened, and the installation efficiency is improved;

[0020] 4. Since the separate installation method will cause stability problems after long-term use, this solution overcomes this problem and extends the service life of the monitoring switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a traction machine brake monitoring switch in the background technology of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the quickly adjustable traction machine brake monitoring switch in the present invention.

[0023] Figure 3It is a schematic diagram of the three-dimensional structure of the quickly adjustable traction machine brake monitoring switch in the present invention.

[0024] Figure 4 It is a schematic diagram of the installation structure of parts on the yoke end base plate in the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional installation structure of the components on the yoke end base plate of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the yoke end bottom plate in the bent state in the present invention.

[0027] Figure 7 It is a structural schematic diagram of the transfer plate of the present invention.

[0028] Figure: 1. Yoke end plate; 2. Micro switch; 3. Rotary plate; 4. Rotary shaft; 5. Return torsion spring; 6. Adjustable bolt; 7. Armature end plate; 8. Brake yoke; 9. Brake armature; 10. Bolt;

[0029] 11. U-shaped bend; 12. Opening; 13. First limiting plate; 14. Second limiting plate; 15. Threaded hole;

[0030] 21. Contact;

[0031] 31. Middle part of the rotating plate; 32. Connecting ear; 33. Flat plate structure; 34. Abutment point. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0033] like Figure 2 and Figure 3 As shown, a quickly adjustable traction machine brake monitoring switch includes a yoke end base plate 1, a micro switch 2, a rotating plate 3, a rotating shaft 4, a reset torsion spring 5, an adjustable bolt 6 and an armature end base plate 7.

[0034] The yoke end bottom plate 1 is fixed to the top of the brake yoke 8 by means of bolts 10 , and the armature end bottom plate 7 is fixed to the top of the brake armature 9 by means of bolts.

[0035] The yoke end bottom plate 1 is an integrated bottom plate, and the micro switch 2 is fixed on the yoke end bottom plate 1 .

[0036] like Figure 4 、 Figure 5 and Figure 7As shown, a U-shaped bend 11 is provided on the bottom plate of the yoke end for the rotating shaft 4, the middle part 31 of the rotating plate is provided in a U-shaped groove shape, and a pair of connecting ears 32 are provided at the tail end of the rotating plate 3. The pair of connecting ears 32 are rotatably matched with the rotating shaft 4, and the U-shaped groove structure is intended to prevent the rotating plate 3 from deforming.

[0037] The front end of the rotating plate 3 is a flat plate structure 33 , and the front end of the rotating plate 3 is arranged corresponding to the contact 21 of the micro switch 2 .

[0038] The rotating shaft 4 is provided with a reset torsion spring 5 for driving the rotating plate 3 to reset. The yoke end bottom plate 1 is provided with an opening 12 for locking one end of the reset torsion spring 5 , and the other end of the reset torsion spring 5 is clamped on the inner side of the rotating plate 3 .

[0039] A partially raised abutment contact point 34 is provided on the outer side of the rotating plate 3 corresponding to the adjustable bolt 6 .

[0040] The yoke end bottom plate 1 is also provided with double-sided limit baffles for limiting the rotation angle of the rotating plate 3. The double-sided limit baffles are a first limit plate 13 and a second limit plate 14 respectively provided on the front and rear sides of the rotating plate 3. The first limit plate 13 and the second limit plate 14 are offset in the lateral direction. In the reset state, the front end of the rotating plate 3 is separated from the contacts of the micro switch 2, wherein the first limit plate 13 is used as a constraint in the reset state of the rotating plate, and the second limit plate 14 is used to prevent the adjustable bolt 6 from pushing the rotating plate 3 out of the limit range, thereby increasing the compression of the micro switch, damaging the micro switch or reducing the service life of the micro switch.

[0041] like Figure 6 As shown, the yoke end bottom plate 1 is provided with threaded holes 15 for installation and positioning. The yoke end bottom plate 1 has a multi-bend structure, and the threaded holes 15 are provided at the bottom of the bend. The micro switch 2 and the rotating plate 3 are installed at the top of the bend. In this state, the bottom plate structure is more stable and not easy to deform, which will not cause the parts integrated thereon to have matching deviations, and the positioning process of the mounting bolts is easier.

[0042] The adjustable bolt 6 is installed on the armature end bottom plate 7, and the adjusting end of the adjustable bolt 6 is arranged corresponding to the abutment contact point 34 on the outer side of the middle part of the rotating plate 3. The length of the adjusting end of the adjustable bolt 6 is adjustable. In the attracted state, the adjustable bolt 6 pushes the front end of the rotating plate 3 to touch the contact 21 of the micro switch 2.

[0043] Working principle:

[0044] Use bolts 10 to fix the yoke end base plate 1 and the armature end base plate 7 to the surfaces of the brake yoke 8 and the brake armature 9 respectively, adjust the adjustable bolt 6 so that the adjustment end of the bolt contacts the abutment point 34 on the rotating plate 3, and then tighten the adjustable bolt to complete the installation and adjustment.

[0045] When the brake is energized, the yoke and armature are attracted to each other, and the air gap (0.3-0.5mm) between them disappears. The adjustable bolt 6 pushes up the rotating plate 3, and the rotating plate 3 rotates around the rotating shaft 4, overcoming the elastic force of the return torsion spring 5, and touches the contact 21 of the micro switch 2, causing the micro switch 2 to trigger and feedback the signal that the brake is in the open state;

[0046] When the brake loses power, an air gap (0.3-0.5mm) appears between the yoke and the armature, and the force between the adjustable bolt 6 and the rotating plate 3 disappears. The rotating plate 3 rotates to the first limit plate 13 under the elastic force of the reset torsion spring 5, and the contact 21 of the micro switch 2 is reset, feeding back a signal that the brake is in the braking state.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for protection of the present invention.

Claims

1. A quickly adjustable traction machine brake monitoring switch, characterized by: The invention comprises a yoke end bottom plate, a micro switch, a rotating plate, a rotating shaft, a reset torsion spring, an adjustable bolt and an armature end bottom plate, wherein the micro switch is fixed on the yoke end bottom plate, the tail end of the rotating plate is rotatably mounted on the yoke end bottom plate through the rotating shaft, the front end of the rotating plate corresponds to the contact setting of the micro switch, the rotating shaft is provided with a reset torsion spring for driving the rotating plate to reset, and the yoke end bottom plate is also provided with a double-sided limit baffle for limiting the rotation angle of the rotating plate. In the reset state, the front end of the rotating plate is aligned with the micro switch Separation; the adjustable bolt is installed on the armature end bottom plate, and the adjusting end of the adjustable bolt is arranged corresponding to the middle outer side of the rotating plate. The adjusting end of the adjustable bolt is adjustable in length. In the attracted state, the adjustable bolt pushes the front end of the rotating plate to touch the contact of the micro switch; the yoke end bottom plate is an integrated bottom plate, and a U-shaped bend is provided on the yoke end bottom plate for the rotating shaft, and an opening is provided on the yoke end bottom plate for locking one end of the reset torsion spring, and the other end of the reset torsion spring is stuck on the inner side of the rotating plate.

2. The rapidly adjustable traction machine brake monitoring switch according to claim 1, characterized in that: The middle portion of the rotating plate is configured as a U-shaped groove, and a pair of connecting ears is provided at the tail end of the rotating plate, and the pair of connecting ears are rotatably matched with the rotating shaft.

3. The rapidly adjustable traction machine brake monitoring switch according to claim 2, characterized in that: A locally raised abutting point is provided on the outer side of the rotating plate corresponding to the adjustable bolt.

4. The rapidly adjustable traction machine brake monitoring switch according to claim 3, characterized in that: The front end of the rotating plate is a flat plate structure.

5. The rapidly adjustable traction machine brake monitoring switch according to any one of claims 1 to 4, characterized in that: A first limiting plate and a second limiting plate are respectively provided on the front and rear sides of the yoke end bottom plate corresponding to the rotating plate, and the first limiting plate and the second limiting plate are offset in the transverse direction.

6. The rapidly adjustable traction machine brake monitoring switch according to claim 5, characterized in that: The yoke end bottom plate is provided with threaded holes for installation and positioning.

7. The rapidly adjustable traction machine brake monitoring switch according to claim 6, characterized in that: The yoke end bottom plate is a multi-bend structure, the threaded hole is arranged at the bottom of the bend, and the micro switch and the rotating plate are installed at the top of the bend.

8. A traction machine brake, characterized in that: It includes a brake yoke, a brake armature and a quickly adjustable traction machine brake monitoring switch as described in any one of claims 1 to 7, the yoke end base plate is fixed to the top of the brake yoke, the armature end base plate is fixed to the top of the brake armature, and the adjusting end of the adjustable bolt is arranged corresponding to the middle outer side of the turn plate; when the brake is energized, the yoke and the armature are attracted, and the adjustable bolt drives the turn plate to rotate and touches the contacts of the micro switch; when the brake is de-energized, the yoke and the armature are disconnected, the adjustable bolt leaves the turn plate, the turn plate is reset, and the micro switch is reset.

9. The traction machine brake according to claim 8, characterized in that: The yoke end bottom plate is fixed to the brake yoke by means of bolts, and the armature end bottom plate is fixed to the brake armature by means of bolts.

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