Safety brake

Abstract

The utility model relates to the technical field of emergency braking devices, and provides a safety brake which comprises a shell, the shell is provided with a cavity, a rotating part is rotationally arranged in the cavity and provided with a plurality of containing grooves arranged circumferentially, the inner wall of at least one side of each containing groove is further provided with a clamping groove, a clamping column is placed in each containing groove, a protrusion is formed on the inner wall of the cavity, and the protrusion is arranged on the inner wall of the cavity. The rotating piece is located on one side of the protrusion, and the clamping column rotates along with the rotating piece, passes through the protrusion and moves along the protrusion to be away from the center of the rotating piece. A blocking part is further formed on the inner wall of the cavity, and a falling channel is formed between the blocking part and the protrusion. By means of the technical scheme, the problem that in the prior art, due to the fact that the self weight of a fireproof roller shutter is large, the fireproof roller shutter is damaged and falls down, and public safety is harmed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency brake devices, in particular to a safety brake. Background Art

[0002] Combined fire shutters are used in commercial fire partitions. They are composed of multiple vertical fire shutters and multiple flexible fire shutters. The span of the entire shutter is large. When a fire occurs, the combined shutters will drop as a whole. Single fire shutters are used in fire partitions and garage entrances and exits of underground garages. Due to the heavy weight of the fire shutters themselves, when used in an environment with a large flow of people, there is a risk of the fire shutters falling, causing injuries to personnel and endangering property safety. During the installation and commissioning of the fire shutters, the falling of the fire shutters will also injure the installers. Utility Model Content

[0003] The utility model provides a safety brake, which solves the problem in the related art that the fireproof rolling curtain is damaged and falls down, endangering public safety due to its heavy deadweight.

[0004] The technical solution of the utility model is as follows:

[0005] Safety brake, including:

[0006] a housing having a cavity,

[0007] A rotating member is rotatably disposed in the cavity and has a plurality of circumferentially arranged receiving grooves, and an inner wall of at least one side of the receiving groove also has a clamping groove.

[0008] A clamping column, wherein the clamping column is placed in the receiving groove,

[0009] A protrusion is formed on the inner wall of the cavity, the rotating part is located on one side of the protrusion, the clamping column passes through the protrusion after following the rotation of the rotating part, and moves along the protrusion to move away from the center of the rotating part; a stopper is also formed on the inner wall of the cavity, and a falling channel is formed between the stopper and the protrusion.

[0010] As a further technical solution, the housing includes a first housing and a second housing, wherein the first housing and the second housing are arranged to rotate relative to each other at a certain angle.

[0011] The first shell and the second shell are combined to form the cavity. Both the first shell and the second shell have the protrusions, and the protrusions are respectively located on both sides of the rotating member.

[0012] As a further technical solution, the card slots are arranged in pairs and are respectively located on both sides of the accommodating slot.

[0013] As a further technical solution, the clamping column is configured to be cylindrical, and the curvature of the clamping column is the same as the curvature of the accommodating groove and the clamping groove.

[0014] As a further technical solution, the first housing has a notch portion and further comprises a travel switch, wherein the travel switch is arranged on the second housing, and a trigger end of the travel switch is inserted into the notch portion.

[0015] As a further technical solution, the cavity has a first arc segment and a second arc segment, the radius of the second arc segment is larger than the radius of the first arc segment, the first arc segment and the second arc segment are connected, the blocking portion is located at the transition between the first arc segment and the second arc segment, and the width of the first arc segment is equal to the distance between the second arc segment and the protrusion.

[0016] As a further technical solution, the clamping posts are arranged in a plurality of circles.

[0017] As a further technical solution, the second shell has an arc-shaped hole and also includes a bolt, and the bolt passes through the arc-shaped hole and is threadedly connected to the second shell.

[0018] As a further technical solution, the arc-shaped holes and the bolts are arranged in a plurality of circles.

[0019] As a further technical solution, a smooth transition is provided between the accommodating slot and the card slot.

[0020] The working principle and beneficial effects of the utility model are:

[0021] The safety brake in the utility model is mainly composed of key components such as a shell, a rotating part and a clamping column. First of all, the shell is a structure with a cavity inside. A cavity for installing and accommodating other components is formed inside the shell, and the cavity is designed to be a space suitable for the rotating part to rotate freely inside it. Secondly, the rotating part is arranged in the cavity and can rotate relative to the shell. There are several receiving grooves evenly arranged along the circumferential direction on the rotating part. These receiving grooves are used to place the clamping column, and the inner wall of at least one side is also specially designed with a clamping groove structure. The clamping column is precisely placed in each receiving groove of the rotating part, and as the rotating part rotates, the clamping column will move with it. Description of the braking mechanism: On the inner wall of the cavity, a protrusion structure is designed. When the rotating part rotates, the clamping column in the receiving groove will pass through this protrusion at a specific position. The clamping column can move along the contour of the protrusion after contacting the protrusion, thereby realizing the movement away from the center of the rotating part. When the rotating speed of the rotating part is low, that is, when the fire shutter door is lifted and opened at a normal speed, the clamping column enters the clamping groove after being pushed away from the center of the rotating part by the protrusion, and then falls back from the falling channel to the receiving groove. In addition, a blocking portion is also provided on the inner wall of the cavity. When the fire shutter door fails and falls quickly, after the clamping column is pushed away from the center of the rotating part by the protrusion, the clamping column will be pushed out of the receiving groove due to the centrifugal force during the sliding process in the falling channel. During the rotation process of the rotating part, the clamping column is stuck by the blocking portion and the clamping groove, preventing the rotating part from further rotating and achieving the braking effect. In summary, the safety brake of this embodiment realizes rapid response and effective braking of the rotating part through the mutual cooperation between the housing, the rotating part and the clamping column, and has the characteristics of compact structure and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the second shell in the utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the first shell in the utility model;

[0027] In the figure: shell 1, cavity 101, protrusion 102, stopper 103, falling channel 104, first shell 105, second shell 106, notch 107, first arc segment 108, second arc segment 109, arc hole 110, rotating part 2, accommodating groove 201, clamping groove 202, clamping column 3, travel switch 4, bolt 5. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0029] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0030] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] Reference Figure 1~Figure 4The embodiment of the utility model proposes a safety brake, including a shell 1, the shell 1 has a cavity 101, the rotating member 2 is rotatably arranged in the cavity 101, and has a plurality of circumferentially arranged receiving grooves 201, the inner wall of at least one side of the receiving groove 201 also has a clamping groove 202, and the clamping column 3 is placed in the receiving groove 201, wherein a protrusion 102 is formed on the inner wall of the cavity 101, the rotating member 2 is located on one side of the protrusion 102, and the clamping column 3 passes through the protrusion 102 after following the rotation of the rotating member 2, and moves along the protrusion 102 to move away from the center of the rotating member 2; a stopper 103 is also formed on the inner wall of the cavity 101, and a falling channel 104 is formed between the stopper 103 and the protrusion 102.

[0033] In this embodiment, the safety brake is installed at the rotating shaft of the rolling door. The safety brake is mainly composed of key components such as a housing 1, a rotating member 2 and a clamping column 3. First, the housing 1 is a structure with a cavity inside. A cavity 101 for installing and accommodating other components is formed inside the housing 1. The cavity 101 is designed to be a space suitable for the rotating member 2 to rotate freely inside it. Secondly, the rotating member 2 is arranged in the cavity 101 and can rotate relative to the housing 1. Several receiving grooves 201 are evenly arranged along the circumferential direction on the rotating member 2. These receiving grooves 201 are used to place the clamping column 3, and the inner wall of at least one side is also specially designed with a clamping groove 202 structure. The clamping column 3 is precisely placed in each receiving groove 201 of the rotating member 2. As the rotating member 2 rotates, the clamping column 3 will move with it. Description of the brake mechanism: On the inner wall of the cavity 101, a protrusion 102 structure is designed. When the rotating member 2 rotates, the clamping column 3 in the receiving groove 201 will pass through this protrusion 102 at a specific position. The clamping column 3 can move along the contour of the protrusion 102 after contacting the protrusion 102, thereby realizing the movement away from the center of the rotating member 2. When the rotating speed of the rotating member 2 is low, that is, when the fire shutter door is opened and closed at a normal speed, the clamping column 3 enters the clamping groove 202 after being pushed away from the center of the rotating member 2 by the protrusion 102, and then falls back from the falling channel 104 to the receiving groove 201. In addition, a stopper 103 is also provided on the inner wall of the cavity 101. When the fire shutter door fails and falls quickly, the clamping column 3 is pushed away from the center of the rotating member 2 by the protrusion 102, and the clamping column 3 is pushed out from the receiving groove 201 during the sliding process in the falling channel 104 by the centrifugal force. During the rotation process of the rotating member 2, the clamping column 3 is stuck by the stopper 103 and the clamping groove 202, preventing the rotating member 2 from further rotating, thereby achieving a braking effect. In summary, the safety brake of this embodiment realizes rapid response and effective braking of the rotating member 2 through the mutual cooperation between the housing 1, the rotating member 2 and the clamping column 3, and has the characteristics of compact structure and reliable operation.

[0034] Furthermore, the shell 1 includes a first shell 105 and a second shell 106, and the first shell 105 and the second shell 106 are arranged to rotate relative to each other at a certain angle. The first shell 105 and the second shell 106 are combined to form a cavity 101, and the first shell 105 and the second shell 106 both have a protrusion 102, which is respectively located on both sides of the rotating part 2.

[0035] In this embodiment, the safety brake adopts a split structure in the design of the housing 1, which is composed of a first housing 105 and a second housing 106. The two parts of the housing 1 can be relatively rotated to meet the needs under different working conditions. When the first housing 105 and the second housing 106 are combined, a continuous internal cavity is formed between them, which is a cavity 101 for accommodating the rotating member 2 and its related components. The design of this cavity 101 ensures that the rotating member 2 can rotate stably and freely therein. The protrusion 102 structure is respectively arranged at the corresponding positions of the first housing 105 and the second housing 106, and is located on both sides of the rotating member 2. During the rotation of the rotating member 2, no matter what angle it is at, the clamping column 3 can achieve the movement away from the center of the rotating member 2 when it passes through the protrusion 102 on one side of the housing 1; at the same time, the protrusion 102 on the other side of the housing 1 can also play a role in positioning or guiding the clamping column 3, thereby ensuring the accuracy and reliability of the braking process. Through the double shell 1 structure and the symmetrically distributed protrusions 102 design, the safety brake of this embodiment not only maintains the efficient execution of the original functions, but also enhances the stability and flexibility of the overall structure, and adapts to more diversified application scenarios.

[0036] Furthermore, the card slots 202 are arranged in pairs and are respectively located on two sides of the receiving slot 201 .

[0037] In this embodiment, the safety brake is further refined in the structure of the rotating member 2, wherein the clamping grooves 202 are arranged in pairs on both sides of the receiving groove 201. This means that there are two corresponding clamping grooves 202 structures on both sides of each receiving groove 201. When the clamping column 3 is placed in the receiving groove 201 and rotates with the rotating member 2, no matter where the clamping column 3 is in the receiving groove 201, it can maintain contact or embedding with at least one clamping groove 202. In the braking operation, when the rotating member 2 rotates to a specific position, the clamping groove 202 on one side can guide the clamping column 3 to move along a predetermined trajectory, thereby realizing the movement away from the center of the rotating member 2. The design of the double-sided clamping grooves 202 can perform the same braking method for the rotating member 2 that rotates in both directions. Such a design not only optimizes the functional performance of the brake, but also makes the application range of the device wider.

[0038] Furthermore, the clamping column 3 is configured to be cylindrical, and the curvature of the clamping column 3 is the same as the curvature of the receiving groove 201 and the clamping groove 202 .

[0039] In this embodiment, the clamping column 3 in the safety brake is designed to be cylindrical, and its curvature precisely matches the curvature of the receiving groove 201 and the clamping grooves 202 on both sides. In practical applications, when the cylindrical clamping column 3 is embedded in the receiving groove 201 of the rotating member 2, since the curvatures between them are the same, the clamping column 3 can achieve seamless fit with the receiving groove 201, ensuring that the clamping column 3 slides smoothly and unimpeded inside the receiving groove 201, reducing friction loss, thereby improving the response speed and service life of the brake. At the same time, since the clamping groove 202 also matches the curvature of the clamping column 3, when the movement direction or position is changed through the clamping groove 202, it can move smoothly along the track of the clamping groove 202, effectively avoiding the operation jam or wear problem caused by shape mismatch, thereby further improving the overall performance and reliability of the safety brake.

[0040] Furthermore, the first housing 105 has a notch 107 and further includes a travel switch 4 . The travel switch 4 is disposed on the second housing 106 , and a trigger end of the travel switch 4 is inserted into the notch 107 .

[0041] In this embodiment, a notch 107 is provided on the first housing 105. At the same time, the safety brake also includes a travel switch 4, which is mounted on the second housing 106, and its trigger end is embedded in the notch 107 of the first housing 105. The safety brake is in an emergency braking state. After the clamping column 3 is stuck between the stopper 103 and the clamping groove 202, the first housing 105 and the second housing 106 rotate relative to each other. At this time, the trigger end of the travel switch 4 moves accordingly with the relative rotation of the housing 1. The trigger end of the travel switch 4 will slide out of the notch 107, and the travel switch 4 will be triggered and respond, sending a signal to the control system to realize the stop operation of the brake. Such a design not only ensures the accuracy and reliability of the safety brake, but also enables the entire device to be intelligently monitored and controlled at different working stages, thereby improving the safety performance and service life of the equipment.

[0042] Furthermore, the cavity 101 has a first arc segment 108 and a second arc segment 109, the radius of the second arc segment 109 is greater than the radius of the first arc segment 108, the first arc segment 108 and the second arc segment 109 are connected, the stopper 103 is located at the transition between the first arc segment 108 and the second arc segment 109, and the width of the first arc segment 108 is equal to the distance between the second arc segment 109 and the protrusion 102.

[0043] In this embodiment, the cavity 101 of the safety brake includes a first arc segment 108 and a second arc segment 109 with a larger radius, and the two arc segments are connected to each other to form a continuous spatial structure. Specifically, the radius of the second arc segment 109 is larger than that of the first arc segment 108. The purpose of this design is to create a gradually expanding transition area in the cavity 101 so that the clamping column 3 can be smoothly moved and positioned when passing through the protrusion 102. In this structure, the stopper 103 is arranged at the intersection of the first arc segment 108 and the second arc segment 109, which plays a role in limiting the movement range of the clamping column 3 and preventing it from deviating from the predetermined track, and achieving the effect of clamping and braking after deviating. In addition, it is particularly worth mentioning that the width of the first arc segment 108 is carefully designed to be equal to the distance between the second arc segment 109 and the protrusion 102. This feature ensures that when the clamping column 3 passes through the stopper 103 from the first arc segment 108 into the second arc segment 109 and contacts the protrusion 102, its moving trajectory is always kept within a precise range, thereby effectively ensuring the accuracy and stability of the brake action. This unique cavity 101 structural design greatly optimizes the performance and efficiency of the safety brake.

[0044] Furthermore, the clamping posts 3 are arranged in a plurality of circles.

[0045] In this embodiment, a clamping column 3 is provided at each receiving groove 201, so as to realize the smooth operation of the rolling door in normal working state, and the smooth and rapid response speed and stability of the safety brake after the rolling door is damaged.

[0046] Furthermore, the second housing 106 has an arc-shaped hole 110 and also includes a bolt 5 , which passes through the arc-shaped hole 110 and is threadedly connected to the second housing 106 .

[0047] In this embodiment, the design of the arc hole 110 and the bolt 5 allows the first shell 105 and the second shell 106 to rotate at an angle within a certain fixed range. When the blocking portion 103, the clamping column 3 and the rotating member 2 cooperate to achieve clamping braking, the first shell 105 and the second shell 106 will rotate relative to each other as the rolling shutter door continues to fall. The design of the arc portion and the bolt 5 avoids uncontrolled large-scale mutual rotation between the first shell 105 and the second shell 106, which would cause a braking failure of the safety brake.

[0048] Furthermore, the arc-shaped holes 110 and the bolts 5 are arranged in a plurality of circles.

[0049] In this embodiment, the layout design of the arc holes 110 and the bolts 5 on the second housing 106 is further described in detail. The arc holes 110 on the second housing 106 are arranged in a plurality of circles, and there are also a plurality of bolts 5 matching the arc holes 110, and these bolts 5 pass through their respective arc holes 110 one by one, and are fastened to the second housing 106 by threaded connection. In this way, the various stresses generated by the brake during emergency braking can be transmitted and dispersed more evenly through the fastening structure of the bolts 5 evenly distributed at multiple points, greatly improving the stability and rigidity of the overall structure of the safety brake. The design of the circular arrangement not only optimizes the mechanical properties of the brake, but also provides convenience during assembly and disassembly. The fastening force can be adjusted or local maintenance can be performed as needed, thereby ensuring the reliability and durability of the safety brake during long-term use.

[0050] Furthermore, a smooth transition is provided between the receiving slot 201 and the locking slot 202 .

[0051] In this embodiment, a smooth transition is set between the accommodating groove 201 and the locking groove 202. The locking column 3 can achieve smooth mutual transfer when sliding between the accommodating groove 201 and the locking groove 202, and can maintain smooth operation when the rolling door is working normally. When the rolling door fails and falls rapidly, it can also achieve accurate and rapid response, thereby providing further stable guarantee for the safety of personnel and property.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Safety brake, characterized in that: include: A housing (1), wherein the housing (1) has a cavity (101), A rotating member (2), the rotating member (2) being rotatably disposed in the cavity (101), having a plurality of circumferentially arranged receiving grooves (201), the inner wall of at least one side of the receiving groove (201) also having a clamping groove (202), A clamping column (3), wherein the clamping column (3) is placed in the receiving groove (201). The inner wall of the cavity (101) is formed with a protrusion (102), the rotating member (2) is located on one side of the protrusion (102), and the clamping column (3) rotates with the rotating member (2) and passes through the protrusion (102), and moves along the protrusion (102) to move away from the center of the rotating member (2); the inner wall of the cavity (101) is also formed with a stopper (103), and a falling channel (104) is formed between the stopper (103) and the protrusion (102).

2. The safety brake according to claim 1, characterized in that: The housing (1) comprises a first housing (105) and a second housing (106), wherein the first housing (105) and the second housing (106) are arranged to rotate relative to each other at a certain angle. The first shell (105) and the second shell (106) are combined to form the cavity (101); the first shell (105) and the second shell (106) both have the protrusion (102); the protrusion (102) is located on both sides of the rotating member (2), respectively.

3. The safety brake according to claim 1, characterized in that: The card slots (202) are arranged in pairs and are respectively located on two sides of the accommodating slot (201).

4. The safety brake according to claim 1, characterized in that: The clamping column (3) is configured as a cylinder, and the curvature of the clamping column (3) is the same as the curvature of the accommodating groove (201) and the clamping groove (202).

5. The safety brake according to claim 2, characterized in that: The first housing (105) has a notch (107) and further comprises a travel switch (4), wherein the travel switch (4) is arranged on the second housing (106), and a trigger end of the travel switch (4) is inserted into the notch (107).

6. The safety brake according to claim 1, characterized in that: The cavity (101) comprises a first circular arc segment (108) and a second circular arc segment (109); the radius of the second circular arc segment (109) is greater than the radius of the first circular arc segment (108); the first circular arc segment (108) and the second circular arc segment (109) are connected; the stopper (103) is located at a transition point between the first circular arc segment (108) and the second circular arc segment (109); and the width of the first circular arc segment (108) is equal to the distance between the second circular arc segment (109) and the protrusion (102).

7. The safety brake according to claim 1, characterized in that: The clamping columns (3) are arranged in a plurality of circles.

8. The safety brake according to claim 2, characterized in that: The second shell (106) has an arc-shaped hole (110) and further comprises a bolt (5), wherein the bolt (5) passes through the arc-shaped hole (110) and is threadedly connected to the second shell (106).

9. The safety brake according to claim 8, characterized in that: The arc-shaped holes (110) and the bolts (5) are arranged in a plurality of circles.

10. The safety brake according to claim 1, characterized in that: A smooth transition is provided between the accommodating groove (201) and the locking groove (202).

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