Cable reel braking device and automatic control method

Abstract

The invention discloses a cable reel braking device and an automatic control method, and relates to the technical field of cable laying equipment, and the cable reel braking device comprises a support, a braking assembly, a driving assembly and a stress sensor. The support is provided with a group of opposite mounting positions; each installation position is provided with a brake assembly, the brake assemblies are hinged to the installation positions, the brake assemblies can swing to the brake positions or the release positions around hinge shafts, and the brake assemblies are used for making contact with a cable reel. The driving assembly is arranged between the two mounting positions, the driving assembly is in transmission connection with the two braking assemblies, and the force arm between the driving assembly and the hinged shaft of the braking assembly is larger than the force arm between the part, used for making contact with the cable reel, of the braking assembly and the hinged shaft of the braking assembly; the stress sensor is arranged between the driving assembly and the braking assembly, and the stress sensor is electrically connected with the driving assembly. According to the cable reel braking device and the automatic control method, the cable reel can be braked more safely, and the braking force is large.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying equipment, and in particular to a cable drum braking device and an automatic control method. Background Art

[0002] Cables are wound on cable drums during packaging and transportation. As the voltage level of cables increases, the diameter of the cables gradually increases, and the diameter, volume and weight of the cable drums used for cable winding also increase accordingly.

[0003] During the cable laying process, the cable drum needs to be set up. As the cable is laid and taken, the cable drum rotates to release the wound cable. When the cable is laid to the required length, the cable drum will continue to rotate due to its inertia, causing the cable to be pulled or squeezed, which may damage the cable. Therefore, when the cable is almost laid, workers will take some measures to brake the cable drum, such as using a stick to insert between the cable drum and the support frame to prevent the cable drum from continuing to rotate. This method is both inefficient and dangerous. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cable drum brake device, which can brake the cable drum more safely and with a large braking force.

[0005] The invention also provides an automatic control method for the cable drum brake device.

[0006] A cable drum brake device according to an embodiment of the first aspect of the present invention comprises a support, wherein the support is provided with a set of relative mounting positions; A brake assembly, each of the mounting positions is provided with a brake assembly, and the brake assembly is hinged to the mounting position, the brake assembly can swing around the hinge axis to a braking position or a release position, the distance between the two brake assemblies in the braking position is smaller than the distance between the two brake assemblies in the release position, and the brake assembly is used to contact the cable drum; A driving assembly, the driving assembly is arranged between the two installation positions, the driving assembly is respectively connected to the two brake assemblies in a transmission manner, and the force arm between the driving assembly and the hinge shaft of the brake assembly is greater than the force arm between the portion of the brake assembly for contacting the cable drum and the hinge shaft of the brake assembly; A stress sensor is disposed between the driving component and the braking component. The stress sensor is used to obtain the stress applied by the driving component to the braking component. The stress sensor is electrically connected to the driving component.

[0007] The cable drum brake device according to the embodiment of the present invention has at least the following beneficial effects: the driving component is used to drive the brake component to swing so as to shorten the distance between the two brake components, and the two brake components are close to each other to complete the clamping of the cable drum and perform contact friction braking; the force arm between the driving component and the articulated shaft is greater than the force arm between the contact part of the brake component and the cable drum and the articulated shaft, so that a small driving force can produce a large braking force, thereby improving the braking force of the cable drum brake device; two brake components are provided, and even if the cable drum is not a complete circle, it can be ensured that at least one brake component can contact the cable drum for braking; the stress sensor arranged between the driving component and the brake component can monitor stress, maintain a reliable braking effect, and reduce the risk of braking failure.

[0008] According to some embodiments of the present invention, the driving stroke of the driving assembly is parallel to the direction of the symmetry axis of the braking assembly, and the driving assembly and each of the braking assemblies are respectively connected with a transmission rod, one end of the transmission rod is connected to the hinge shaft of the braking assembly, and the other end of the transmission rod is connected to the driving assembly.

[0009] According to some embodiments of the present invention, the driving assembly has a movable end and a fixed end, the movable end is connected to the transmission rod, the fixed end is connected to the support, and the connecting line between the movable end and the fixed end is the driving stroke of the driving assembly.

[0010] According to some embodiments of the present invention, the driving assembly includes a driving member and a plurality of connecting rods, wherein the plurality of connecting rods are connected end to end to form a first connecting rod group and a second connecting rod group, the first connecting rod group and the second connecting rod group are symmetrically distributed, the axes of symmetry of the first connecting rod group and the second connecting rod group are parallel to the axes of symmetry of the two brake assemblies, one end of the first connecting rod group is connected to one end of the second connecting rod group to form the movable end, the other end of the first connecting rod group is connected to the other end of the second connecting rod group to form the fixed end, the driving member is arranged between the first connecting rod group and the second connecting rod group, one end of the driving member is connected to the first connecting rod group, the other end of the driving member is connected to the second connecting rod group, and the driving stroke of the driving member is perpendicular to the driving stroke of the driving assembly.

[0011] According to some embodiments of the present invention, the portion where two adjacent links in the first link group are connected is a link node, the portion where two adjacent links in the second link group are connected is also a link node, one end of the driving member is connected to the link node of the first link group, and the other end of the driving member is connected to the link node of the second link group.

[0012] According to some embodiments of the present invention, the driving member includes a driving cylinder and two piston rods, the driving cylinder has a double chamber, each chamber is provided with the piston rod, the two piston rods are coaxially arranged and face oppositely, the end of one of the piston rods is connected to the first connecting rod group, and the end of the other piston rod is connected to the second connecting rod group.

[0013] According to some embodiments of the present invention, a piezoresistive sensor is provided on the end surface of the piston rod.

[0014] According to some embodiments of the present invention, the brake assembly includes a brake wheel and a rocker arm group, one end of the rocker arm group is fixedly connected to the brake wheel, and the other end of the rocker arm group is hinged to the mounting position.

[0015] According to some embodiments of the present invention, the brake wheel is provided with and fixed with an axle, the axle is connected to the rocker arm group, and in the connection structure between the axle and the rocker arm group, the axle can be disassembled along the axial direction of the axle, and the axle is fixed in the circumferential direction.

[0016] According to the automatic control method of the cable drum brake device of the second embodiment of the present invention, the cable drum is braked by using the above-mentioned cable drum brake device and performing the following steps: Step S1, issuing a command to the driving assembly to drive the two brake assemblies to swing closer to each other, the two brake assemblies swing from the release position to the braking position, and keep at least one brake assembly in contact with the cable drum; Step S2, the stress sensor monitors the stress applied by the driving component to the brake component, and controls the stress applied by the driving component to the brake component to gradually increase to a set threshold; Step S3: The stress sensor continuously monitors the stress applied by the driving component to the braking component and uses it for feedback adjustment to maintain the stress within a set threshold range.

[0017] The automatic control method of the cable drum brake device according to the embodiment of the present invention has at least the following beneficial effects: feedback adjustment of the stress sensor can ensure that the brake assembly brakes the cable drum reliably, reducing the risk of brake failure.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a structural schematic diagram of the cable drum brake device in the release position according to an embodiment of the present invention; Figure 2It is a structural schematic diagram of the cable drum brake device in the braking position according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention; Figure 4 The present invention is a schematic structural diagram of the cable drum brake device and the cable drum in accordance with an embodiment of the present invention.

[0020] Figure Number: The support 100 , the brake assembly 200 , the brake wheel 210 , the rocker arm assembly 220 , the drive assembly 300 , the drive member 310 , the drive cylinder 311 , the piston rod 312 , the first connecting rod assembly 320 , the second connecting rod assembly 330 , the stress sensor 400 , and the transmission rod 500 . DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] Cables are wound on cable drums during packaging and transportation. As the voltage level of cables increases, the diameter of the cables gradually increases, and the diameter, volume and weight of the cable drums on which the cables are wound also increase.

[0026] During the cable laying process, the cable drum needs to be set up. As the cable is laid and taken, the cable drum rotates to release the wound cable. When the cable is laid to the required length, the cable drum will continue to rotate due to its inertia, causing the cable to be pulled or squeezed, which may damage the cable. Therefore, when the cable is almost laid, workers will take some measures to brake the cable drum, such as using a stick to insert between the cable drum and the support frame to prevent the cable drum from continuing to rotate. This method is both inefficient and dangerous.

[0027] There are also some types of devices that can brake or stop the cable drum, such as the cable drum brake device in publication number CN115504313A, which has a fixed triangle block and a movable triangle block, shortening the distance between the two triangle blocks to achieve the clamping and braking of the cable drum. However, it is still necessary to manually pull the extended plug on the rotating handle to push the movable triangle block close to the cable drum, and the reaction force of the cable drum still needs to be borne and controlled by the workers, which is dangerous. In addition, the fixed triangle block and the movable triangle block are limited to movement on the chassis, so it is necessary to control the support height of the cable drum to ensure that the lowest end of the cable drum is as close to the chassis as possible, so that the fixed triangle block and the movable triangle block can be close to clamp the cable drum.

[0028] Reference Figure 1 and Figure 2 As shown, a cable drum braking device according to an embodiment of the present invention includes a support 100 , a braking assembly 200 , a driving assembly 300 and a stress sensor 400 .

[0029] The support 100 is provided with a group of relative installation positions; each installation position is provided with a brake assembly 200, and the brake assembly 200 is hinged to the installation position, and the brake assembly 200 can swing around the hinge axis to a braking position or a release position. When in the braking position, the distance between the two brake assemblies 200 is smaller than the distance between the two brake assemblies 200 in the release position, and the brake assembly 200 is used to contact the cable drum.

[0030] Specifically, Figure 4 As shown, the cable drum is supported by a support frame, and the surface of the cable drum is parallel to the plane where the two brake assemblies 200 are located. When the brake assemblies 200 move to the braking position, that is, the brake assemblies 200 are close to each other, at least one brake assembly 200 will be in contact with the edge of the cable drum. After the cable drum contacts the brake assembly 200, the rotation speed of the cable drum is gradually reduced by friction, and the cable drum is finally braked. Preferably, the brake assembly 200 is provided with a material with a large friction coefficient such as rubber material to increase friction.

[0031] It should be understood that since the brake assembly 200 only needs to be able to swing, after the brake assembly 200 is hinged to the installation position, a space can be left between the two installation positions to leave space for the placement of the cable drum. For example, the lowest end of the cable drum only needs to be lower than the height of the brake assembly 200. When the brake assembly 200 swings toward the braking position, it will inevitably contact the cable drum. Therefore, when the cable drum is placed on the support frame, the adjustable height range is wider.

[0032] It is also necessary to understand that when the two brake assemblies 200 approach each other toward the braking position, at least one brake assembly 200 will be in contact with the cable drum; when only one brake assembly 200 can be in contact with the cable drum, it means that the outline of the cable drum is not a complete circle, or the support position of the cable drum is not at the central axis of the two brake assemblies 200. At this time, one brake assembly 200 can still brake the cable drum, and the cable drum brake device of the present application has wide adaptability. Of course, under normal circumstances, both brake assemblies 200 can be in contact with the cable drum to achieve a better braking effect.

[0033] The driving assembly 300 is arranged between the two installation positions, and the driving assembly 300 is respectively connected to the two brake assemblies 200 in transmission, and the force arm between the driving assembly 300 and the hinge axis of the brake assembly 200 is greater than the force arm between the part of the brake assembly 200 used to contact the cable drum and the hinge axis of the brake assembly 200.

[0034] When the force arm between the driving assembly 300 and the hinge shaft of the brake assembly 200 is greater than the force arm between the part of the brake assembly 200 used to contact the cable drum and the hinge shaft of the brake assembly 200, a larger braking force can be generated by a small driving force, thereby improving the braking force of the cable drum brake device. Therefore, it is also suitable for braking cable drums with larger diameters, volumes and masses.

[0035] The stress sensor 400 is disposed between the driving assembly 300 and the braking assembly 200 . The stress sensor 400 is used to obtain the stress applied by the driving assembly 300 to the braking assembly 200 . The stress sensor 400 is electrically connected to the driving assembly 300 .

[0036] The stress sensor 400 is used to monitor the stress applied by the drive assembly 300 to the brake assembly 200, so that the brake assembly 200 maintains a reliable braking effect and reduces the risk of brake failure. Specifically, the stress sensor 400 can monitor the stress applied by the drive assembly 300 to the brake assembly 200, and control the stress applied by the drive assembly 300 to the brake assembly 200 to gradually rise to a set threshold; then the stress sensor 400 continuously monitors the stress applied by the drive assembly 300 to the brake assembly 200, and is used for feedback adjustment to maintain the stress within the set threshold range. It is safer to brake the cable drum by automatically controlling the brake assembly 200 through the drive assembly 300.

[0037] It can be understood that the driving stroke of the driving component 300 is parallel to the symmetry axis direction of the braking component 200, and the driving component 300 and each braking component 200 are respectively connected to a transmission rod 500, one end of the transmission rod 500 is connected to the hinge shaft of the braking component 200, and the other end of the transmission rod 500 is connected to the driving component 300.

[0038] The brake assembly 200 is distributed left and right, and its axis of symmetry is generally vertical, so when the drive assembly 300 drives one end of the transmission rod 500 to move vertically, the transmission rod 500 will rotate around the hinge axis and drive the brake assembly 200 to start swinging around the hinge axis. The force arm between the drive assembly 300 and the hinge axis is positively correlated with the rod length of the transmission rod 500, so the longer the rod length of the transmission rod 500, the greater the force arm between the drive assembly 300 and the hinge axis, and the smaller the driving force required to provide the same braking force.

[0039] It should be understood that since the driving stroke of the driving component 300 is linear, specifically vertical, but when the transmission rod 500 rotates, there is a vertical displacement and a horizontal displacement, so a bar hole should be opened on the driving component 300, and one end of the transmission rod 500 is set in the bar hole of the driving component 300 to meet the degree of freedom requirements.

[0040] It can be understood that the driving component 300 has a movable end and a fixed end, the movable end is connected to the transmission rod 500 , and the fixed end is connected to the support 100 , and the connecting line between the movable end and the fixed end is the driving stroke of the driving component 300 .

[0041] In a specific way, refer to Figure 3As shown, it can be understood that the driving assembly 300 includes a driving member 310 and multiple connecting rods, and the multiple connecting rods are connected end to end to form a first connecting rod group 320 and a second connecting rod group 330, the first connecting rod group 320 and the second connecting rod group 330 are symmetrically distributed, and the symmetry axes of the first connecting rod group 320 and the second connecting rod group 330 are parallel to the symmetry axes of the two brake assemblies 200, one end of the first connecting rod group 320 is connected to one end of the second connecting rod group 330 to form a movable end, and the other end of the first connecting rod group 320 is connected to the other end of the second connecting rod group 330 to form a fixed end, and the driving member 310 is arranged between the first connecting rod group 320 and the second connecting rod group 330, one end of the driving member 310 is connected to the first connecting rod group 320, and the other end of the driving member is connected to the second connecting rod group 330, and the driving stroke of the driving member 310 is perpendicular to the driving stroke of the driving assembly 300.

[0042] After the multiple connecting rods are combined into the first connecting rod group 320 and the second connecting rod group 330, it is only necessary to symmetrically arrange the first connecting rod group 320 and the second connecting rod group 330 and connect the two ends to form a scissor-like structure. At this time, the driving member 310 is arranged between the first connecting rod group 320 and the second connecting rod group 330. When the first connecting rod group 320 and the second connecting rod group 330 are pushed to move outward, the movable end will move downward relative to the fixed end; on the contrary, when the driving member 310 pulls the first connecting rod group 320 and the second connecting rod group 330 to move inward, the movable end will move upward relative to the fixed end.

[0043] exist Figure 1 In the structure shown, when the movable end moves upward, it will drive the brake assembly 200 to swing outward through the transmission rod 500, that is, the brake assembly 200 swings toward the release position; on the contrary, when the movable end moves downward, it will drive the brake assembly 200 to swing inward through the transmission rod 500, that is, the brake assembly 200 swings toward the braking position.

[0044] Through the above-mentioned structure of the first connecting rod group 320 and the second connecting rod group 330, the driving force of the driving member 310 can be further amplified. Specifically, by utilizing the characteristics of a scissors-like structure, the driving member 310 applies a horizontal force to the first connecting rod group 320 and the second connecting rod group 330, which is a vertical force when transmitted to the movable end, and is amplified for the first time. Then, the transmission rod 500 is used to amplify the force for the second time. Under the same driving force, the braking force generated is greater and the braking effect is better.

[0045] It can be understood that the part where two adjacent links in the first link group 320 are connected is a link node, and the part where two adjacent links in the second link group 330 are connected is also a link node. One end of the driving member 310 is connected to the link node of the first link group 320, and the other end of the driving member 310 is connected to the link node of the second link group 330.

[0046] In a preferred embodiment, both ends of the driving member 310 are respectively connected to the connecting rod nodes of the first connecting rod group 320 and the second connecting rod group 330. The nodes where the connecting rods are connected to each other generally have a larger space for the driving member 310 to connect, and the degree of freedom here is higher and more flexible.

[0047] It can be understood that the driving member 310 includes a driving cylinder 311 and two piston rods 312. The driving cylinder 311 has a double chamber, and a piston rod 312 is provided in each chamber. The two piston rods 312 are coaxially arranged and face oppositely. The end of one piston rod 312 is connected to the first connecting rod group 320, and the end of the other piston rod 312 is connected to the second connecting rod group 330.

[0048] The driving cylinder 311 can be a pneumatic cylinder or a hydraulic cylinder. The driving cylinder 311 is configured to drive the two piston rods 312 to extend outward at the same time, or to retract inward at the same time, so as to drive the first connecting rod group 320 and the second connecting rod group 330.

[0049] It can be understood that the end surface of the piston rod 312 is provided with a piezoresistive sensor.

[0050] The piezoresistive sensor is disposed on the end surface of the piston rod 312. When the piston rod 312 applies pressure to the first connecting rod assembly 320 or the second connecting rod assembly 330, the resistivity of the piezoresistive sensor changes, which can be used to convert the stress magnitude into the magnitude of the electrical signal, that is, the piezoresistive sensor is a type of stress sensor 400. It should be understood that the stress sensor 400 is not limited to using a piezoresistive sensor.

[0051] It can be understood that the brake assembly 200 includes a brake wheel 210 and a rocker arm assembly 220, one end of the rocker arm assembly 220 is fixedly connected to the brake wheel 210, and the other end of the rocker arm assembly 220 is hinged to the mounting position.

[0052] The brake wheel 210 is used to contact the cable drum and provide a braking effect. The brake wheel 210 can be made of a material with a high friction coefficient such as rubber, so that a higher friction force can be obtained under the same pressure. It should be understood that the brake wheel 210 is fixedly connected to the swing arm assembly 220, or in other words, the brake wheel 210 is fixed in the circumferential direction to prevent the brake wheel 210 from rotating around its own circumference.

[0053] It can be understood that the brake wheel 210 is provided with and fixed with an axle, and the axle is connected to the rocker arm assembly 220. In the connection structure between the axle and the rocker arm assembly 220, the axle can be disassembled along the axial direction of the axle, and the axle is fixed in the circumferential direction.

[0054] Specifically, one end of the axle may be cylindrical, and the other end may also be cylindrical, but is provided with a connecting key. In the rocker arm assembly 220, a circular hole is provided at a portion for connecting one end of the axle, and a circular hole and a keyway are provided at the other end. The length of the brake wheel 210 is smaller than the length of the axle, and both ends of the axle are reserved with sufficiently long exposed portions. When installing the axle, the end of the axle without the connecting key is inserted into the circular hole, and then the end with the connecting key is inserted into the circular hole with the keyway, and the axial position of the axle is adjusted so that the axle is centered. Finally, a positioning pin is inserted into one end of the axle with the connecting key to limit the axial movement of the axle.

[0055] In another embodiment, both ends of the axle are cylindrical, and the rocker arm group 220 is correspondingly provided with two circular holes. After the axle is inserted into the circular holes, a fixing cap with a positioning piece is used to be mounted on one end of the axle, and the fixing cap is connected to the end face of the axle by bolts. The positioning piece on the fixing cap can match the positioning groove on the rocker arm group 220. When the fixing cap cannot rotate circumferentially, the axle cannot rotate circumferentially either.

[0056] An automatic control method for a cable drum brake device according to an embodiment of the present invention uses the above-mentioned cable drum brake device and brakes the cable drum through the following steps: Step S1, issuing a command to the driving assembly to drive the two brake assemblies to swing closer to each other, the two brake assemblies swing from the release position to the braking position, and keep at least one brake assembly in contact with the cable drum; Step S2, the stress sensor monitors the stress applied by the driving component to the brake component, and controls the stress applied by the driving component to the brake component to gradually increase to a set threshold; Step S3: The stress sensor continuously monitors the stress applied by the driving component to the braking component and uses it for feedback adjustment to maintain the stress within a set threshold range.

[0057] The cable drum is supported by a support frame, and the surface of the cable drum is parallel to the plane where the two brake assemblies are located. When the brake assemblies move to the braking position, that is, the brake assemblies are close to each other, at least one brake assembly will contact the edge of the cable drum. After the cable drum contacts the brake assembly, the rotation speed of the cable drum is gradually reduced by friction, and the cable drum is finally braked.

[0058] The stress sensor is used to monitor the stress applied by the drive assembly to the brake assembly, so that the brake assembly maintains a reliable braking effect and reduces the risk of brake failure. Specifically, the stress sensor can monitor the stress applied by the drive assembly to the brake assembly and control the stress applied by the drive assembly to gradually rise to the set threshold; then the stress sensor continuously monitors the stress applied by the drive assembly to the brake assembly and uses feedback adjustment to maintain the stress within the set threshold range. It is safer to brake the cable drum by automatically controlling the brake assembly through the drive assembly.

[0059] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cable drum brake device, characterized in that: include: A support (100), wherein the support (100) is provided with a set of relative mounting positions; A brake assembly (200), each of the mounting positions being provided with a brake assembly (200), and the brake assembly (200) being hinged to the mounting position, the brake assembly (200) being able to swing around a hinge axis to a brake position or a release position, the distance between the two brake assemblies (200) being smaller than the distance between the two brake assemblies (200) being in the release position, and the brake assembly (200) being used to contact the cable drum; A driving assembly (300), the driving assembly (300) being arranged between the two installation positions, the driving assembly (300) being respectively connected to the two brake assemblies (200) in transmission connection, and the force arm between the driving assembly (300) and the hinge shaft of the brake assembly (200) being greater than the force arm between the portion of the brake assembly (200) for contacting the cable drum and the hinge shaft of the brake assembly (200); A stress sensor (400), the stress sensor (400) being arranged between the driving component (300) and the braking component (200), the stress sensor (400) being used to obtain the stress applied by the driving component (300) to the braking component (200), and the stress sensor (400) being electrically connected to the driving component (300).

2. The cable drum brake device according to claim 1, characterized in that: The driving stroke of the driving assembly (300) is parallel to the symmetry axis direction of the braking assembly (200); the driving assembly (300) and each of the braking assemblies (200) are respectively connected to a transmission rod (500); one end of the transmission rod (500) is connected to the hinge shaft of the braking assembly (200), and the other end of the transmission rod (500) is connected to the driving assembly (300).

3. The cable drum brake device according to claim 2, characterized in that: The driving assembly (300) has a movable end and a fixed end, the movable end is connected to the transmission rod (500), the fixed end is connected to the support (100), and the connecting line between the movable end and the fixed end is the driving stroke of the driving assembly (300).

4. The cable drum brake device according to claim 3, characterized in that: The driving assembly (300) comprises a driving member (310) and a plurality of connecting rods, wherein the plurality of connecting rods are connected end to end to form a first connecting rod group (320) and a second connecting rod group (330), wherein the first connecting rod group (320) and the second connecting rod group (330) are symmetrically distributed, wherein the symmetry axes of the first connecting rod group (320) and the second connecting rod group (330) are parallel to the symmetry axes of the two brake assemblies (200), and one end of the first connecting rod group (320) is connected to one end of the second connecting rod group (330) to form the The movable end, the other end of the first connecting rod group (320) is connected to the other end of the second connecting rod group (330) to form the fixed end, the driving member (310) is arranged between the first connecting rod group (320) and the second connecting rod group (330), one end of the driving member (310) is connected to the first connecting rod group (320), the other end of the driving member is connected to the second connecting rod group (330), and the driving stroke of the driving member (310) is perpendicular to the driving stroke of the driving assembly (300).

5. The cable drum brake device according to claim 4, characterized in that: The portion where two adjacent connecting rods in the first connecting rod group (320) are connected is a connecting rod node, and the portion where two adjacent connecting rods in the second connecting rod group (330) are connected is also a connecting rod node. One end of the driving member (310) is connected to the connecting rod node of the first connecting rod group (320), and the other end of the driving member (310) is connected to the connecting rod node of the second connecting rod group (330).

6. The cable drum brake device according to claim 4, characterized in that: The driving member (310) comprises a driving cylinder (311) and two piston rods (312); the driving cylinder (311) has a double chamber, each chamber is provided with the piston rod (312), the two piston rods (312) are coaxially arranged and face opposite directions, the end of one of the piston rods (312) is connected to the first connecting rod group (320), and the end of the other piston rod (312) is connected to the second connecting rod group (330).

7. The cable drum brake device according to claim 6, characterized in that: A piezoresistive sensor is provided on the end surface of the piston rod (312).

8. The cable drum brake device according to claim 1, characterized in that: The brake assembly (200) comprises a brake wheel (210) and a rocker arm group (220), one end of the rocker arm group (220) being fixedly connected to the brake wheel (210), and the other end of the rocker arm group (220) being hinged to the installation position.

9. The cable drum brake device according to claim 8, characterized in that: The brake wheel (210) is provided with a wheel axle and fixed thereon, the wheel axle is connected to the swing arm assembly (220), and in the connection structure between the wheel axle and the swing arm assembly (220), the wheel axle can be disassembled along the axial direction of the wheel axle, and the wheel axle is fixed in the circumferential direction.

10. An automatic control method for a cable drum brake device, characterized in that: The cable drum is braked by using the cable drum brake device according to any one of claims 1 to 9 by the following steps: Step S1, issuing a command to the driving assembly to drive the two brake assemblies to swing closer to each other, the two brake assemblies swing from the release position to the braking position, and keep at least one brake assembly in contact with the cable drum; Step S2, the stress sensor monitors the stress applied by the driving component to the brake component, and controls the stress applied by the driving component to the brake component to gradually increase to a set threshold; Step S3: The stress sensor continuously monitors the stress applied by the driving component to the braking component and uses it for feedback adjustment to maintain the stress within a set threshold range.

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