Brake

Abstract

The utility model discloses a brake, which belongs to the technical field of elevator equipment, and comprises a brake assembly and a guide mechanism, the brake assembly comprises an iron core, a brake part and a pushing part, the iron core is sleeved outside the guide mechanism and is in sliding fit with the guide mechanism, and the end part of the guide mechanism abuts against the first end of the iron core; the first end of the braking part is installed at the second end of the iron core, the second end of the braking part is installed on the pushing part, the guiding mechanism is sleeved with the pushing part, the pushing part is in sliding fit with the guiding mechanism, and the pushing part is used for being matched with the braking wheel; in the first direction, the pushing piece is provided with a first moving position and a second moving position, at the first moving position, the pushing piece abuts against the brake wheel, and the iron core abuts against the end of the guide mechanism. The moving distance of the pushing piece is reduced in a disguised mode, the moving distance of the pushing piece is shortened, and the acceleration of the braking piece acting on the pushing piece is reduced, so that the impact force of the pushing piece on the braking wheel is reduced, and noise of the brake during operation is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator equipment, and in particular relates to a brake. Background Art

[0002] The brake is one of the most important safety components of the elevator. In the current plate brake, the iron core is fixedly connected to the machine base and the pedestal, that is, the position of the iron core is fixed; the pusher is located between the iron core and the brake wheel. When the iron core is energized, a magnetic field is generated to attract the pusher to move away from the brake wheel to achieve the release operation; when the iron core is de-energized, the brake spring on the iron core drives the pusher to move toward the brake wheel to achieve the braking operation.

[0003] In the existing plate brake, since the iron core is in a fixed state, the pushing member has a long running distance relative to the iron core. When the pushing member is driven by the elastic force of the brake spring, a large impact force is generated on the brake wheel at the moment the pushing member contacts the brake wheel, causing the brake to make a large noise during operation. Summary of the invention

[0004] The utility model aims to provide a brake, which realizes that the iron core has a certain moving path on the guide mechanism, reduces the moving distance of the pusher, thereby reducing the impact force of the pusher on the brake wheel and reducing the noise of the brake during operation.

[0005] The technical solution is as follows:

[0006] A brake comprises a brake assembly and a guide mechanism, wherein the brake assembly comprises an iron core, a brake member and a push member, wherein the iron core is sleeved outside the guide mechanism and slidably cooperates with the guide mechanism, and an end of the guide mechanism abuts against a first end of the iron core; the first end of the brake member is mounted on a second end of the iron core, and the second end of the brake member is mounted on the push member, the push member is arranged opposite to the iron core, and the push member is used to cooperate with a brake wheel;

[0007] In the first direction, the pushing member has a first moving position and a second moving position. In the first moving position, the pushing member abuts against the brake wheel, and the iron core abuts against the end of the guide mechanism; in the second moving position, the pushing member is separated from the brake wheel, and the iron core is separated from the end of the guide mechanism.

[0008] In one embodiment, the brake assembly further comprises a reset member, a first end of the reset member is mounted on the push member, a second end of the reset member is mounted on the guide mechanism, and the braking direction of the brake member and the action direction of the reset member are both in the first direction.

[0009] In one embodiment, the return member includes a first return spring and a second return spring, the first end of the first return spring is installed on the top of the pushing member, the first end of the second return spring is installed on the bottom of the pushing member, and the second ends of the first return spring and the second return spring are both installed on the guide mechanism.

[0010] In one embodiment, the braking member is sleeved outside the guide mechanism and extends along the first direction, and both the iron core and the pushing member have a mounting groove for accommodating at least a portion of the braking member.

[0011] In one embodiment, the brake member includes a first brake spring and a second brake spring, wherein the first brake spring is disposed at the top of the iron core, and the second brake spring is disposed at the bottom of the iron core.

[0012] In one embodiment, a coil is provided in the iron core, and the coil is used to connect to a power source, and the magnetic field generated by the coil is directed toward the pushing member.

[0013] In one embodiment, the pushing member includes an armature and a brake shoe, the armature is sleeved on the outside of the guide mechanism and slidingly cooperates with the guide mechanism; the brake shoe is installed on one side of the guide mechanism through a reset member, and the brake shoe is located between the armature and the brake wheel, and the end of the brake shoe away from the brake wheel is used to resist the armature.

[0014] In one embodiment, the brake shoe is arc-shaped on a side facing the brake wheel, and the inner arc surface of the brake shoe is used to fit with the outer arc surface of the brake wheel.

[0015] In one embodiment, the guide mechanism includes a base and at least two guide members, the two guide members are installed on one side of the base, the iron core is sleeved outside the two guide members, and the two guide members are arranged opposite to each other, and the iron core or the pushing member is slidably matched with the guide members.

[0016] In one embodiment, the guide member has a guide column and a nut, the nut is installed at the end of the guide column, and the inner side of the nut is used to abut against the outer end of the iron core.

[0017] The technical solution provided by the utility model has the following advantages and effects:

[0018] 1. The iron core is sleeved outside the guide mechanism, and the end of the guide mechanism is against the first end of the iron core; when in use, the brake member is used to drive the pusher to move to the first moving position, and the pusher is against the brake wheel, thereby braking the brake wheel, and the brake wheel is squeezed by the pusher and stops working; because the brake member is installed on the iron core, the iron core and the guide mechanism are slidably matched, and when the brake member applies the force of the pusher, it will apply a directional force to the iron core, so that the iron core moves toward the end of the guide mechanism and against the end of the guide mechanism. When the total moving distance of the brake assembly remains unchanged, the brake member drives the iron core and the pusher to move on the guide mechanism respectively, and the sum of the moving distance of the iron core and the moving distance of the pusher is equal to the total moving distance of the brake assembly, thereby reducing the moving distance of the pusher in disguise. The shortening of the moving distance of the pusher will reduce the time for the pusher to move to the brake wheel, reduce the acceleration of the pusher, thereby reducing the impact force of the pusher on the brake wheel, and reduce the noise of the brake during operation.

[0019] 2. By installing the two ends of the reset member on the pushing member and the guide mechanism respectively, and the action direction of the reset member and the braking direction of the brake member are both in the first direction, when the brake member drives the pushing member to move in the first direction, the pushing member squeezes the reset member, and the reset member will apply a reaction force to the pushing member, thereby offsetting part of the driving force of the brake member on the pushing member, but because the action force of the brake member is greater than the reaction force of the reset member, the pushing member will still move to the first moving position, thereby braking the brake wheel; reducing the action force of the pushing member on the brake wheel by the reset member will further reduce the acceleration of the brake member on the pushing member, thereby reducing the impact force of the pushing member on the brake wheel.

[0020] 3. The reset member has a first reset spring and a second reset spring, which are respectively arranged at the top and bottom of the push member, so as to further reduce the impact force of the push member on the brake wheel at two different positions of the push member, reduce the noise of the push member hitting the brake wheel, and improve the stability of the push member on the guide mechanism.

[0021] 4. The brake member is sleeved outside the guide mechanism to improve the stability of the brake member between the iron core and the push member, so that the force of the brake member acts directly on the push member, and the iron core and the push member have mounting grooves for accommodating at least part of the brake member, further improving the stability of the brake member.

[0022] 5. The brake member includes a first brake spring and a second brake spring, and the first brake spring and the second brake spring are respectively arranged at the top and the bottom of the iron core, so that the brake member provides power to the pushing member in multiple directions, thereby increasing the driving force of the pushing member.

[0023] 6. The iron core has a coil. When the coil is conductive, the iron core generates a magnetic field, which will be used to absorb the pushing member. Since the iron core and the pushing member are slidably matched with the guide member, the iron core and the pushing member are close to each other, thereby squeezing the brake member; at this time, the reset member will also apply a reverse force to the pushing member, so that the pushing member moves to the second moving position, thereby separating the pushing member from the brake wheel. After the coil is conductive, the brake is in a released state; the reset member is used to reset the pushing member to avoid contact between the pushing member and the brake wheel, thereby avoiding insufficient release of the brake.

[0024] 7. The pusher includes an armature and a brake shoe. The armature is used to cooperate with the iron core magnetically, and the brake shoe is used to cooperate with the brake wheel. The brake shoe is generally more wear-resistant, and the armature needs to cooperate with the iron core magnetically. Its material is different from that of the brake shoe. By assembling the armature and the brake shoe separately, the assembly and production process of the pusher are simplified.

[0025] 8. The brake shoe is arc-shaped on the side facing the brake wheel, and the inner arc surface of the brake shoe is used to fit with the outer arc surface of the brake wheel, thereby increasing the contact area between the brake shoe and the brake wheel and further improving the braking efficiency of the brake shoe.

[0026] 9. By setting two guide members, the stability of the sliding fit between the iron core or the pusher and the guide mechanism is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the brake in one embodiment of the utility model. Figure 1 .

[0028] Figure 2 This is a schematic diagram of the structure of the brake in one embodiment of the utility model. Figure 2 .

[0029] Figure 3 This is the brake power-off braking state in one embodiment of the utility model. Figure 1 .

[0030] Figure 4 This is the brake power-off braking state in one embodiment of the utility model. Figure 2 .

[0031] Figure 5 The brake is powered on and released in one embodiment of the utility model. Figure 1 .

[0032] Figure 6 The brake is powered on and released in one embodiment of the utility model. Figure 2 .

[0033] Figure 7 The brake is powered on and released in one embodiment of the utility model. Figure 3 .

[0034] Description of reference numerals:

[0035] 100. Brake; 1. Brake assembly; 11. Iron core; 12. Brake member; 121. First brake spring; 122. Second brake spring; 13. Pusher; 131. Armature; 132. Brake shoe; 2. Reset member; 21. First reset spring; 22. Second reset spring; 3. Brake wheel; 4. Guide mechanism; 41. Guide member; 42. Base; 43. Nut. DETAILED DESCRIPTION

[0036] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0037] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0038] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0040] like Figures 1 to 7As shown, a brake 100 includes a brake assembly 1 and a guide mechanism 4. The brake assembly 1 includes an iron core 11, a brake member 12 and a push member 13. The iron core 11 is sleeved on the outside of the guide mechanism 4 and slidably cooperates with the guide mechanism 4. The end of the guide mechanism 4 abuts against the first end of the iron core 11; the first end of the brake member 12 is installed on the second end of the iron core 11, and the second end of the brake member 12 is installed on the push member 13. The push member 13 is arranged opposite to the iron core 11, and the push member 13 is used to cooperate with the brake wheel 3; in the first direction, the push member 13 has a first moving position and a second moving position. In the first moving position, the push member 13 abuts against the brake wheel 3, and the iron core 11 abuts against the end of the guide mechanism 4; in the second moving position, the push member 13 is separated from the brake wheel 3, and the iron core 11 is separated from the end of the guide mechanism 4. By sleeve-fitting the iron core 11 onto the outside of the guide mechanism 4, the end of the guide mechanism 4 abuts against the first end of the iron core 11; when in use, the brake member 12 is used to drive the push member 13 to move to the first moving position, the push member 13 abuts against the brake wheel 3, thereby braking the brake wheel 3, and the brake wheel 3 stops working due to the squeezing of the push member 13; since the brake member 12 is installed on the iron core 11, the iron core 11 and the guide mechanism 4 are slidably matched, when the brake member 12 applies the force of the push member 13, a directional force will be applied to the iron core 11, so that the iron core 11 moves toward the end of the guide mechanism 4 and abuts against the end of the guide mechanism 4.

[0041] In this embodiment, the adjustment sleeve design in the prior art is eliminated, and the existing adjustment sleeve is threadedly matched with the iron core 11, and the position of the iron core 11 is adjusted by rotating the adjustment sleeve. When the brake member 12 is used, the armature 131 adjusts the stroke through the nut 43 and the brake member 12; when adjusting the stroke, loosen the nut 43, adjust the position of the iron core 11 on the guide member 41, and use the reverse force of the second brake spring 122 in the brake member 12 to make the two ends of the iron core 11 respectively abut against the second brake spring 122 and the nut 43 to achieve the position adjustment of the iron core 11. The position of the iron core 11 on the guide member 41 changes, and the stroke distance of the armature 131 is adjusted. After the stroke is adjusted to the set value, tighten the nut 43 to improve the stroke adjustment efficiency.

[0042] Under the condition that the total moving distance of the brake assembly 1 remains unchanged, the iron core 11 and the pusher 13 are driven to move on the guide mechanism 4 by the brake member 12, and the sum of the moving distance of the iron core 11 and the moving distance of the pusher 13 is equal to the total moving distance of the brake assembly 1, thereby reducing the moving distance of the pusher 13 in disguised form. The shortening of the moving distance of the pusher 13 will reduce the time for the pusher 13 to move to the brake wheel 3, reduce the acceleration of the pusher 13, thereby reducing the impact force of the pusher 13 on the brake wheel 3, and reduce the noise of the brake 100 during operation. In this embodiment, under the condition that the impact force of the pusher 13 on the brake wheel 3 is reduced, the brake wheel 3 is repeatedly subjected to the smaller impact force of the pusher 13, which is not easy to cause cracks in the pusher 13 or the brake wheel 3, thereby improving the service life of the elevator.

[0043] like Figures 3 to 7 As shown, the brake assembly 1 also has a reset member 2, the first end of the reset member 2 is mounted on the push member 13, the second end of the reset member 2 is mounted on the guide mechanism 4, and the braking direction of the brake member 12 and the action direction of the reset member 2 are both in the first direction. By mounting the two ends of the reset member 2 on the push member 13 and the guide mechanism 4 respectively, and the action direction of the reset member 2 and the braking direction of the brake member 12 are both in the first direction, when the brake member 12 drives the push member 13 to move in the first direction, the push member 13 squeezes the reset member 2, and the reset member 2 will apply a reaction force to the push member 13, thereby offsetting part of the driving force of the brake member 12 on the push member 13, but because the action force of the brake member 12 is greater than the reaction force of the reset member 2, the push member 13 will still be moved to the first moving position by the brake member 12, thereby braking the brake wheel 3; the reset member 2 reduces the action force of the push member 13 on the brake wheel 3, which will further reduce the acceleration of the brake member 12 on the push member 13, thereby reducing the impact force of the push member 13 on the brake wheel 3.

[0044] like Figure 4 As shown, the reset member 2 includes a first reset spring 21 and a second reset spring 22, the first end of the first reset spring 21 is mounted on the top of the push member 13, the first end of the second reset spring 22 is mounted on the bottom of the push member 13, and the second ends of the first reset spring 21 and the second reset spring 22 are both mounted on the guide mechanism 4. The first reset spring 21 and the second reset spring 22 are respectively arranged on the top and the bottom of the push member 13, so that the impact force of the push member 13 on the brake wheel 3 is further reduced at two different positions of the push member 13, the noise of the push member 13 hitting the brake wheel 3 is reduced, and the stability of the push member 13 on the guide mechanism 4 is improved.

[0045] like Figure 4As shown, the brake member 12 is sleeved outside the guide mechanism 4 and extends along the first direction, and the iron core 11 and the push member 13 both have a mounting groove (not shown in the figure) for accommodating at least part of the brake member 12. The brake member 12 is sleeved outside the guide mechanism 4 to improve the stability of the brake member 12 between the iron core 11 and the push member 13, so that the force of the brake member 12 directly acts on the push member 13 or the iron core 11, and the iron core 11 and the push member 13 have a mounting groove for accommodating at least part of the brake member 12, further improving the stability of the brake member 12.

[0046] In addition, the brake member 12 includes a first brake spring 121 and a second brake spring 122, the first brake spring 121 is arranged at the top of the iron core 11, and the second brake spring 122 is arranged at the bottom of the iron core 11; thereby, the brake member 12 provides power to the pushing member 13 in multiple directions, thereby increasing the driving force of the pushing member 13.

[0047] In addition, the iron core 11 has a coil (not shown in the figure), which is used to connect the power supply, and the magnetic field generated by the coil is directed toward the pusher 13. When the coil is conductive, the iron core 11 generates a magnetic field, which will be used to adsorb the pusher 13. Since the iron core 11 and the pusher 13 are both slidably matched with the guide member 41, the iron core 11 and the pusher 13 are close to each other, thereby squeezing the brake member 12; at this time, the reset member 2 will also apply a reverse force to the pusher 13, so that the pusher 13 moves to the second moving position, so that the pusher 13 is separated from the brake wheel 3. After the coil is conductive, the brake 100 is in a released state; the reset member 2 is used to reset the pusher 13 to prevent the pusher 13 from contacting the brake wheel 3, so as to prevent the brake 100 from being released incompletely.

[0048] like Figure 3 As shown, the pusher 13 includes an armature 131 and a brake shoe 132. The armature 131 is sleeved outside the guide mechanism 4 and slidably cooperates with the guide mechanism 4. The brake shoe 132 is installed on one side of the guide mechanism 4 through the reset member 2, and the brake shoe 132 is located between the armature 131 and the brake wheel 3. The end of the brake shoe 132 away from the brake wheel 3 is used to abut against the armature 131. The armature 131 is used to magnetically cooperate with the iron core 11, and the brake shoe 132 is used to cooperate with the brake wheel 3. The brake shoe 132 is generally more wear-resistant, while the armature 131 needs to magnetically cooperate with the iron core 11. In this embodiment, at least part of the armature 131 is made of magnetic material, and the material of the armature 131 is different from that of the brake shoe 132. In this way, the armature 131 and the brake shoe 132 are assembled separately, simplifying the assembly and production process of the pusher 13.

[0049] like Figure 4As shown, the brake shoe 132 is arc-shaped on one side facing the brake wheel 3, and the inner arc surface of the brake shoe 132 is used to fit with the outer arc surface of the brake wheel 3. Thereby increasing the contact area between the brake shoe 132 and the brake wheel 3, further improving the braking efficiency of the brake shoe 132.

[0050] like Figure 4 As shown, the guide mechanism 4 includes a base 42 and at least two guide members 41, the two guide members 41 are installed on one side of the base 42, the iron core 11 is sleeved outside the two guide members 41, and the two guide members 41 are arranged opposite to each other, and the iron core 11 or the pushing member 13 is slidably matched with the guide members 41; by setting two guide members 41, the stability of the sliding fit between the iron core 11 or the pushing member 13 and the guide mechanism 4 is improved.

[0051] like Figure 4 As shown, the guide member 41 has a guide column and a nut 43, the nut 43 is installed at the end of the guide column, and the inner side of the nut 43 is used to abut against the outer end of the iron core 11. During installation, the armature 131 and the iron core 11 are first sleeved on the outside of the guide column in sequence; secondly, the nut 43 is installed at the end of the guide column, so that the iron core 11 abuts against the nut 43 when the power is off, so that the brake member 12 pushes the brake shoe 132 to move toward the brake wheel 3 and brake, and the nut 43 and the guide column can be used to simplify the assembly process of the iron core 11 and the armature 131.

[0052] like Figures 3 to 7 As shown, the working principle of this brake 100 is: Figure 3 and Figure 4 This is a diagram of the power-off state of the brake 100. At this time, there is no magnetic field between the iron core 11 and the armature 131, and the iron core 11 and the armature 131 have no force to approach each other. The first brake spring 121 and the second brake spring 122 drive the armature 131 and the brake shoe 132 toward the brake wheel 3 due to their own elastic force. The brake shoe 132 contacts the brake wheel 3, so that the brake shoe 132 brakes the brake wheel 3. Figures 5 to 7 This is a diagram of the power-on state of the brake 100. After the iron core 11 is energized, a magnetic field is generated between the iron core 11 and the armature 131, the iron core 11 and the armature 131 attract each other and approach each other, and the iron core 11 and the armature 131 slide on the guide column; when the iron core 11 and the armature 131 are completely adsorbed, the two are temporarily in a static state, at this time, the first return spring 21 and the second return spring 22 apply a reverse force to the brake shoe 132, and then the brake shoe 132 pushes the armature 131 and the iron core 11 toward the nut 43, the iron core 11 and the nut 43 are against each other, and when the power is not cut off, the brake shoe 132 is completely separated from the brake wheel 3.

[0053] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A brake, characterized in that: The invention comprises a brake assembly and a guide mechanism, wherein the brake assembly comprises an iron core, a brake member and a push member, wherein the iron core is sleeved outside the guide mechanism and slidably cooperates with the guide mechanism, and an end of the guide mechanism abuts against a first end of the iron core; the first end of the brake member is mounted on the second end of the iron core, and the second end of the brake member is mounted on the push member, the push member is arranged opposite to the iron core, and the push member is used to cooperate with the brake wheel; In the first direction, the pushing member has a first moving position and a second moving position. In the first moving position, the pushing member abuts against the brake wheel, and the iron core abuts against the end of the guide mechanism; in the second moving position, the pushing member is separated from the brake wheel, and the iron core is separated from the end of the guide mechanism.

2. The brake according to claim 1, characterized in that The brake assembly also has a reset member, a first end of which is mounted on the push member, a second end of which is mounted on the guide mechanism, and a braking direction of the brake member and an action direction of the reset member are both in the first direction.

3. The brake according to claim 2, characterized in that The return member includes a first return spring and a second return spring, the first end of the first return spring is installed on the top of the pushing member, the first end of the second return spring is installed on the bottom of the pushing member, and the second ends of the first return spring and the second return spring are both installed on the guide mechanism.

4. The brake according to claim 1, characterized in that The braking member is sleeved outside the guide mechanism and is extended along the first direction. The iron core and the pushing member both have a mounting groove for accommodating at least part of the braking member.

5. The brake according to claim 4, characterized in that The brake member includes a first brake spring and a second brake spring, wherein the first brake spring is arranged at the top of the iron core, and the second brake spring is arranged at the bottom of the iron core.

6. The brake according to claim 2, characterized in that The iron core has a coil inside, the coil is used to connect to a power source, and the magnetic field generated by the coil is directed toward the pushing member.

7. The brake according to any one of claims 1 to 6, characterized in that The pushing member includes an armature and a brake shoe, the armature is sleeved on the outside of the guide mechanism and slidably cooperates with the guide mechanism; the brake shoe is installed on one side of the guide mechanism through a reset member, and the brake shoe is located between the armature and the brake wheel, and the end of the brake shoe away from the brake wheel is used to resist the armature.

8. The brake according to claim 7, characterized in that The brake shoe is arc-shaped on one side facing the brake wheel, and the inner arc surface of the brake shoe is used to fit with the outer arc surface of the brake wheel.

9. The brake according to any one of claims 1 to 6, characterized in that The guide mechanism includes a base and at least two guide members, the two guide members are installed on one side of the base, the iron core is sleeved outside the two guide members, and the two guide members are arranged opposite to each other, and the iron core or the pushing member is slidably matched with the guide members.

10. The brake according to claim 9, characterized in that The guide member has a guide column and a nut, the nut is installed on the end of the guide column, and the inner side of the nut is used to abut against the outer end of the iron core.

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