Direct-current electromagnetic braking device capable of releasing during power failure

Abstract

The direct-current electromagnetic braking device comprises a connecting shaft, a first swing arm, a second swing arm and a sliding assembly, the two ends of the connecting shaft are fixedly connected to a bottom plate in a sleeved mode, the bottom plate is fixedly installed at a preset position, and one end of the first swing arm and one end of the second swing arm are rotationally connected to the periphery of the connecting shaft in a sleeved mode. The other end of the first swing arm is hinged to one end of the sliding assembly, the other end of the sliding assembly is connected to the other end of the second swing arm, the section of the first swing arm and the section of the second swing arm are each of an arc-shaped structure, and the sliding assembly can drive the end of the first swing arm and the end of the second swing arm to move relatively. According to the direct-current electromagnetic braking device capable of being released in the power failure, when the first swing arm and the second swing arm are braked, the first swing arm and the second swing arm can relatively slightly move on the connecting shaft so as to adapt to the relative position of the periphery of the transmission shaft, and it is guaranteed that the pressure of the base plates on the periphery of the transmission shaft is relatively consistent.

Description

Technical Field

[0001] The utility model belongs to the field of brakes, in particular to a DC electromagnetic brake device released during power outages. Background Art

[0002] An electromagnetic brake is a connector that transmits torque from the active side to the passive side. It can be freely engaged, disengaged, or braked as needed. It boasts a compact structure, simple operation, responsiveness, long life, reliability, and ease of remote control. Electromagnetic brakes are an ideal automated actuator in modern industry, primarily serving to transmit power and control motion in mechanical transmission systems. Existing electromagnetic brakes are typically located around the periphery of the drive shaft, applying braking force by gripping the shaft. When multiple brake pads are installed, each pad must be positioned as concentric as possible with the drive shaft to ensure uniform pressure on the shaft, extending the lifespan of the components. However, this installation method is cumbersome and the quality of the installation is unpredictable. Furthermore, existing electromagnetic brakes are normally closed. When powered off, they grip the drive shaft, preventing rotation. Rotating the shaft requires either a power source or complete disassembly, resulting in inconvenient maintenance. Summary of the Invention

[0003] In view of this, the present invention aims to provide a DC electromagnetic brake device with power-off release to solve the problems of complicated installation and uncontrollable installation quality when the electromagnetic brake is installed in conjunction with the drive shaft in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A DC electromagnetic braking device for power failure release includes a connecting shaft, a first swing arm, a second swing arm and a sliding assembly. The two ends of the connecting shaft are fixedly sleeved on a base plate, and the base plate is fixedly installed to a preset position. One end of the first swing arm and one end of the second swing arm are respectively rotatably sleeved on the periphery of the connecting shaft. The other end of the first swing arm is hinged to one end of the sliding assembly, and the other end of the sliding assembly is connected to the other end of the second swing arm. The cross-sections of the first swing arm and the second swing arm are both arc-shaped structures. The sliding assembly can drive the ends of the first swing arm and the second swing arm to move relative to each other.

[0006] Furthermore, the sliding assembly includes a support rod, one end of the support rod is hinged to one end of the first swing arm through a pin shaft, the other end of the support rod is fixedly installed with a fixing plate, and an electromagnet is provided on one side of the fixing plate, the inner ring of the electromagnet is slidably connected to the outer periphery of the support rod, a sliding gap is provided between one end of the electromagnet and the fixing plate, and the other end of the electromagnet can abut against one side of the end of the second swing arm.

[0007] Further, electromagnets and clamping plates are respectively arranged on both sides of the second swing arm. One end of the clamping plate is provided with a sleeve. The sleeve is located outside the support rod. A braking spring is arranged outside the sleeve. Two ends of the braking spring respectively abut against one side of the clamping plate and one side of the sliding plate. The inner ring of the sliding plate is located outside the sleeve. And the end of the sleeve is threadedly connected with a compression nut. One end of the compression nut abuts against the other side of the sliding plate.

[0008] Further, a connecting rod is installed on the electromagnet. The clamping plate and the sliding plate are respectively provided with sliding holes. The outside of the connecting rod is slidably connected into the sliding holes. And an adjusting nut is installed at the end of the connecting rod.

[0009] Further, one end of the support rod is threadedly connected to an adjusting sleeve. And one end of the adjusting sleeve is rotatably sleeved on a floating rod. One end of the floating rod is fixedly connected to the outside of a pin shaft. The support rod is hinged to one end of the first swing arm through the adjusting sleeve, the floating rod and the pin shaft in sequence.

[0010] Further, the outside of the adjusting sleeve is of a polygonal structure.

[0011] Further, the support rod includes a clamping rod and a sliding rod which are integrally arranged. And the outside of the clamping rod is slidably connected to the inner ring of the electromagnet. One end of the clamping rod is fixedly connected to one end of a fixing plate. The other end of the clamping rod abuts against one end of the sleeve. And the outer diameter of the clamping rod is larger than the inner ring of the sleeve. One end of the sliding rod is fixedly connected to the clamping rod. The outside of the sliding rod is slidably connected to the inner ring of the sleeve. The other end of the sliding rod is connected to the adjusting sleeve.

[0012] Further, cushion plates are detachably installed on the inner sides of the first swing arm and the second swing arm respectively.

[0013] Further, the outside of the first swing arm can abut against the upper end of the bottom plate.

[0014] Further, a boss is arranged at one end of the first swing arm. A U-shaped groove is arranged at one end of the second swing arm. The boss is installed in the U-shaped groove through a connecting shaft.

[0015] Compared with the prior art, the DC electromagnetic braking device with power-off release of the present utility model has the following beneficial effects: Both the first swing arm and the second swing arm are rotatably connected to the bottom plate through connecting shafts. The bottom plate is fixedly connected to the foundation. The first swing arm and the second swing arm are installed outside the transmission shaft. After the debugging and installation are completed, when the first swing arm and the second swing arm are braked, the first swing arm and the second swing arm can move slightly relative to each other on the connecting shafts so as to adapt to the relative positions outside the transmission shaft, ensure that the pressures of each cushion plate on the outside of the transmission shaft are relatively consistent, improve the service life of the parts and reduce the installation difficulty.

[0016] When the electromagnet is powered on, the electromagnet adsorbs the fixing plate, the fixing plate drives the clamping rod to axially slide, the end of the clamping rod is clamped at the end of the sleeve, the clamping rod drives the clamping plate and the sliding rod to axially slide, the sliding rod drives the first swing arm and the second swing arm to open relatively, the transmission shaft is released, the sliding plate is fixed by the connecting rod and the electromagnet, the axially sliding clamping plate compresses the braking spring. When the electromagnet is powered off, the braking spring drives the clamping plate to axially reset in the reverse direction, and the transmission shaft is braked. In case of power failure during an accident, the staff can release the braking spring by adjusting the compression nut, and the braking spring no longer presses the clamping plate, so that the staff can manually adjust the relative position of the fixing plate for maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings forming a part of this utility model are used to provide a further understanding of this utility model. The schematic embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation to this utility model. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a DC electromagnetic braking device with power-off release according to an embodiment of this utility model;

[0019] Figure 2 is a side view schematic diagram of a DC electromagnetic braking device with power-off release according to an embodiment of this utility model;

[0020] Figure 3 is a sectional view schematic diagram of a DC electromagnetic braking device with power-off release according to an embodiment of this utility model;

[0021] Figure 4 is a schematic structural diagram of the sliding assembly according to an embodiment of this utility model.

[0022] DESCRIPTION OF THE REFERENCE NUMERALS:

[0023] 1 - bottom plate; 2 - connecting shaft; 3 - first swing arm; 31 - boss; 4 - second swing arm; 5 - sliding assembly; 51 - support rod; 501 - clamping rod; 502 - sliding rod; 52 - pin shaft; 53 - fixing plate; 54 - electromagnet; 55 - clamping plate; 56 - sliding plate; 57 - connecting rod; 58 - braking spring; 59 - adjusting sleeve; 510 - floating rod; 511 - compression nut; 512 - adjusting nut; 513 - sleeve; 6 - backing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] It should be noted that, without conflict, the embodiments in this utility model and the features in the embodiments can be combined with each other.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0027] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0028] As Figures 1-4 shown, a DC electromagnetic braking device with power-off release includes a connecting shaft 2, a first swing arm 3, a second swing arm 4, and a sliding assembly 5. Both ends of the connecting shaft 2 are fixedly sleeved on the bottom plate 1, and the bottom plate 1 is fixedly installed at a preset position. One end of the first swing arm 3 and one end of the second swing arm 4 are respectively rotatably sleeved around the connecting shaft 2. The other end of the first swing arm 3 is hinged to one end of the sliding assembly 5, and the other end of the sliding assembly 5 is connected to the other end of the second swing arm 4. The cross-sections of the first swing arm 3 and the second swing arm 4 are both arc-shaped structures. The inner sides of the first swing arm 3 and the second swing arm 4 are respectively detachably installed with backing plates 6. The first swing arm 3 and the second swing arm 4 are both rotatably connected to the bottom plate 1 through the connecting shaft 2. The bottom plate 1 is fixedly connected to the foundation. The first swing arm 3 and the second swing arm 4 are installed around the transmission shaft. After the debugging and installation are completed, when the first swing arm 3 and the second swing arm 4 are braked, the first swing arm 3 and the second swing arm 4 can move slightly relative to each other on the connecting shaft 2 to adapt to the relative position around the transmission shaft, ensuring that the pressure of each backing plate 6 on the periphery of the transmission shaft is relatively consistent, improving the service life of the parts, and reducing the installation difficulty.

[0029] The sliding component 5 includes a support rod 51. One end of the support rod 51 is hinged to one end of the first swing arm 3 through a pin shaft 52. The other end of the support rod 51 is fixedly installed with a fixing plate 53. And an electromagnet 54 is arranged on one side of the fixing plate 53. The inner circle of the electromagnet 54 is slidably connected to the periphery of the support rod 51. There is a sliding gap between one end of the electromagnet 54 and the fixing plate 53. The other end of the electromagnet 54 can abut against one side of the end of the second swing arm 4. The sliding gap is the floating space for the relative movement of the fixing plate 53 and the electromagnet 54. When the electromagnet 54 is energized, the electromagnet 54 adsorbs the fixing plate 53 to realize the relative movement of the fixing plate 53 and the electromagnet 54. At this time, the first swing arm 3 and the second swing arm 4 are relatively opened, and the first swing arm 3 and the second swing arm 4 do not hold the transmission shaft tightly.

[0030] Electromagnets 54 and clamping plates 55 are respectively arranged on both sides of the second swing arm 4. One end of the clamping plate 55 is installed with a sleeve 513. The sleeve 513 is located on the periphery of the support rod 51. A brake spring 58 is arranged on the periphery of the sleeve 513. The two ends of the brake spring 58 respectively abut against one side of the clamping plate 55 and one side of the sliding plate 56. The inner circle of the sliding plate 56 is located on the periphery of the sleeve 513. And the end of the sleeve 513 is threadedly connected with a compression nut 511. One end of the compression nut 511 abuts against the other side of the sliding plate 56. The support rod 51 includes a clamping rod 501 and a sliding rod 502 which are integrally arranged. And the periphery of the clamping rod 501 is slidably connected to the inner circle of the electromagnet 54. One end of the clamping rod 501 is fixedly connected to one end of the fixing plate 53. The periphery of the other end of the clamping rod 501 abuts against one end of the sleeve 513. And the outer diameter of the clamping rod 501 is larger than the inner circle of the sleeve 513. One end of the sliding rod 502 is fixedly connected to the clamping rod 501. The periphery of the sliding rod 502 is slidably connected to the inner circle of the sleeve 513. The other end of the sliding rod 502 is connected to an adjusting sleeve 59. A connecting rod 57 is installed on the electromagnet 54. The clamping plate 55 and the sliding plate 56 are respectively provided with sliding holes. The periphery of the connecting rod 57 is slidably connected to the sliding holes. And an adjusting nut 512 is installed at the end of the connecting rod 57. When the electromagnet 54 is energized, the electromagnet 54 adsorbs the fixing plate 53. The fixing plate 53 drives the clamping rod 501 to axially slide. The end of the clamping rod 501 is clamped at the end of the sleeve 513. The clamping rod 501 drives the clamping plate 55 and the sliding rod 502 to axially slide. The sliding rod 502 drives the first swing arm 3 and the second swing arm 4 to relatively open. The transmission shaft is released. The sliding plate 56 is fixed by the connecting rod 57 and the electromagnet 54. The axially sliding clamping plate 55 compresses the brake spring 58. When the electromagnet 54 is powered off, the brake spring 58 drives the clamping plate 55 to axially reverse and reset. The transmission shaft is braked. In case of power failure during an accident, the staff can release the brake spring 58 by adjusting the compression nut 511. The brake spring 58 does not press the clamping plate 55 tightly, so that the staff can manually adjust the relative position of the fixing plate 53 for maintenance and repair.

[0031] One end of the support rod 51 is threadedly connected to the adjusting sleeve 59, and one end of the adjusting sleeve 59 is rotatably sleeved on the floating rod 510. One end of the floating rod 510 is fixedly connected to the periphery of the pin shaft 52. The support rod 51 is hinged to one end of the first swing arm 3 through the adjusting sleeve 59, the floating rod 510 and the pin shaft 52 in sequence. The way that the support rod 51 is threadedly connected to the adjusting sleeve 59 facilitates adjusting the width of the sliding gap so as to be applicable to different working conditions. And in order to facilitate adjusting the adjusting sleeve 59 by a knob, the periphery of the adjusting sleeve 59 in this embodiment is of a polygonal structure.

[0032] When the first swing arm 3 and the second swing arm 4 do not participate in braking, in order to prevent the backing plate 6 from rubbing against the periphery of the transmission shaft, the outer side of the first swing arm 3 can abut against the upper end of the bottom plate 1, thereby fixing the relative positions of the first swing arm 3 and the second swing arm 4. And in this embodiment, a boss 31 is provided at one end of the first swing arm 3, and a U-shaped groove is provided at one end of the second swing arm 4. The boss 31 is installed in the U-shaped groove through the connecting shaft 2.

[0033] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A DC electromagnetic braking device with power-off release, characterized in that: It includes a connecting shaft (2), a first swing arm (3), a second swing arm (4) and a sliding assembly (5). Both ends of the connecting shaft (2) are fixedly sleeved on the bottom plate (1), and the bottom plate (1) is fixedly installed at a preset position. One end of the first swing arm (3) and one end of the second swing arm (4) are respectively rotatably sleeved on the periphery of the connecting shaft (2). The other end of the first swing arm (3) is hinged to one end of the sliding assembly (5), and the other end of the sliding assembly (5) is connected to the other end of the second swing arm (4). Moreover, the cross-sections of the first swing arm (3) and the second swing arm (4) are both arc-shaped structures, and the sliding assembly (5) can drive the ends of the first swing arm (3) and the second swing arm (4) to move relatively.

2. The DC electromagnetic braking device with power-off release according to claim 1, characterized in that: The sliding assembly (5) includes a support rod (51). One end of the support rod (51) is hinged to one end of the first swing arm (3) through a pin shaft (52). The other end of the support rod (51) is fixedly installed with a fixing plate (53). And an electromagnet (54) is arranged on one side of the fixing plate (53). The inner circle of the electromagnet (54) is slidably connected to the periphery of the support rod (51). There is a sliding gap between one end of the electromagnet (54) and the fixing plate (53). The other end of the electromagnet (54) can abut against one side of the end of the second swing arm (4).

3. The DC electromagnetic braking device with power-off release according to claim 2, characterized in that: Electromagnets (54) and clamping plates (55) are respectively arranged on both sides of the second swing arm (4). One end of the clamping plate (55) is installed with a sleeve (513). The sleeve (513) is located on the periphery of the support rod (51). A braking spring (58) is arranged on the periphery of the sleeve (513). Both ends of the braking spring (58) respectively abut against one side of the clamping plate (55) and one side of a sliding plate (56). The inner circle of the sliding plate (56) is located on the periphery of the sleeve (513). And the end of the sleeve (513) is threadedly connected with a compression nut (511). One end of the compression nut (511) abuts against the other side of the sliding plate (56).

4. A DC electromagnetic braking device with power-off release according to claim 3, characterized in that: A connecting rod (57) is installed on the electromagnet (54). Slide holes are respectively arranged on the clamping plate (55) and the sliding plate (56). The periphery of the connecting rod (57) is slidably connected in the slide holes. And an adjusting nut (512) is installed at the end of the connecting rod (57).

5. A DC electromagnetic braking device with power-off release according to claim 4, characterized in that: One end of the support rod (51) is threadedly connected to an adjusting sleeve (59). And one end of the adjusting sleeve (59) is rotatably sleeved on a floating rod (510). One end of the floating rod (510) is fixedly connected to the periphery of the pin shaft (52). The support rod (51) is hinged to one end of the first swing arm (3) through the adjusting sleeve (59), the floating rod (510) and the pin shaft (52) in sequence.

6. The DC electromagnetic braking device with power-off release according to claim 5, characterized in that: The periphery of the adjusting sleeve (59) is a polygonal structure.

7. The DC electromagnetic braking device with power-off release according to claim 5, characterized in that: The support rod (51) includes a clamping rod (501) and a sliding rod (502) which are integrally provided. The outer periphery of the clamping rod (501) is slidably connected to the inner ring of the electromagnet (54). One end of the clamping rod (501) is fixedly connected to one end of the fixing plate (53). The outer periphery of the other end of the clamping rod (501) abuts against one end of the sleeve (513), and the outer diameter of the clamping rod (501) is larger than the inner ring of the sleeve (513). One end of the sliding rod (502) is fixedly connected to the clamping rod (501), the outer periphery of the sliding rod (502) is slidably connected to the inner ring of the sleeve (513), and the other end of the sliding rod (502) is connected to the adjusting sleeve (59).

8. A DC electromagnetic braking device with power-off release according to claim 1, characterized in that: The inner sides of the first swing arm (3) and the second swing arm (4) are respectively detachably installed with cushion plates (6).

9. A DC electromagnetic braking device with power-off release according to claim 1, characterized in that: The outer side of the first swing arm (3) can abut against the upper end of the bottom plate (1).

10. A DC electromagnetic braking device with power-off release according to claim 1, characterized in that: One end of the first swing arm (3) is provided with a boss (31), one end of the second swing arm (4) is provided with a U-shaped groove, and the boss (31) is installed in the U-shaped groove through a connecting shaft (2).

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