Elevator brake with braking torque sensor

Abstract

The utility model relates to the related technical field of elevator brakes, one embodiment of the utility model provides an elevator brake with a braking torque sensor, the elevator brake comprises a mounting plate and a pair of side frames, the side frames are rotationally connected to the mounting plate through pin shafts, the braking assembly is arranged on the side frames, and the braking torque sensor is arranged on the side frames. The connecting and fixing assembly is arranged at the outer end of the side frame, the braking assembly comprises a pair of movable holes, the movable holes are formed in the two ends of the surface of the side frame, movable rods are connected into the movable holes in an inserted mode, one ends of the movable rods are connected with a braking frame, and a tension and compression sensor is installed between the braking frame and the side frame. By means of the technical scheme, the technical problems that in the prior art, a friction plate on a brake disc is prone to falling off, a pressure sensor cannot sense the failure of a friction interface, the torque is still calculated based on spring pressure, and consequently the detection result seriously deviates from the actual brake torque are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of lifting mechanism brakes, and more specifically, to a lifting mechanism brake with a braking torque sensor. Background Technology

[0002] In the field of safety monitoring of electro-hydraulic boom disc brakes, accurate detection of braking torque is a crucial link in ensuring the safe operation of the equipment. Current mainstream detection devices use a pressure sensor installed inside the brake spring's spring housing to calculate the braking torque by equating the working pressure of the brake spring to the normal pressure exerted by the brake disc on the brake disc, and then combining this with the friction coefficient and the brake disc radius. While this detection logic can quantify torque under normal operating conditions, it reveals significant shortcomings when dealing with complex fault scenarios.

[0003] When the brake arm is mechanically jammed and locked, the elastic deformation of the brake spring does not disappear, and the pressure sensor still reports a normal pressure value. However, at this time, the brake disc has lost actual contact with the brake pads, and the actual braking torque is zero, yet the detection device outputs a misleading result of "normal torque." Similarly, friction pads on the brake disc are prone to detachment, and the pressure sensor cannot detect the failure of the friction interface, still calculating torque based on spring pressure, leading to a significant deviation between the detection result and the actual braking torque. Furthermore, when the friction coefficient on the brake disc surface changes significantly due to oil dripping, water dripping, or overheating, the detection device cannot directly monitor the friction state and still calculates torque based on a constant friction coefficient, failing to identify the risk of actual braking torque attenuation.

[0004] The core issue of the above problems lies in the fact that the indirect measurement principle of existing detection technologies relies solely on normal pressure to calculate frictional force, lacking direct perception of the actual operating state of the friction pair. The core function of braking torque detection devices is to provide real-time early warning of abnormal operating conditions. However, existing solutions, due to their inability to capture key risk points such as brake arm jamming, friction plate failure, and fluctuations in the coefficient of friction, may lead to monitoring blind spots before safety accidents occur, making it difficult to meet the stringent reliability and safety requirements of industrial equipment. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a lifting mechanism brake with a braking torque sensor, which solves the technical problem in the prior art that the friction pads on the brake disc are easy to fall off, the pressure sensor cannot detect the failure of the friction interface, and the torque is still calculated based on the spring pressure, resulting in a serious deviation between the detection result and the actual braking torque.

[0006] According to one aspect, at least one embodiment of this disclosure provides a lifting mechanism brake with a braking torque sensor, comprising:

[0007] The mounting plate and a pair of side frames are rotatably connected to the mounting plate by pins.

[0008] A braking assembly, which is mounted on the side frame;

[0009] A connecting and fixing assembly is disposed at the outer end of the side frame;

[0010] The braking assembly includes a pair of movable holes, which are formed at both ends of the side frame surface. Movable rods are inserted into the movable holes, and one end of the movable rod is connected to a brake frame. A tension / compression sensor is installed between the brake frame and the side frame.

[0011] As a further technical solution, a connecting plate is fitted onto one end of each pair of movable rods, and a first bolt is installed on both ends of the surface of the connecting plate. The first bolt is connected to the movable rod by threaded screwing, and a spring is fitted onto the movable rod.

[0012] As a further technical solution, the side surface of the side frame is provided with a mounting groove, a brake pad is fitted in the mounting groove, and a second bolt is installed at both ends of the brake pad. The second bolt is connected to the mounting groove by screwing.

[0013] As a further technical solution, the connecting and fixing assembly includes a connecting frame, the surface of which is provided with a pair of grooves, each groove containing an inner rod, and a movable block is slidably connected to the inner rod.

[0014] As a further technical solution, one end of the side frame is provided with an insertion hole, one end of the movable block is inserted into the insertion hole, a stud is inserted between the movable block and the side frame, and one end of the stud is connected to a nut by threaded screwing.

[0015] As a further technical solution, the mounting plate has several fixing holes on its surface.

[0016] As a further technical solution, the surface of the brake pad is higher than the outer end face of the brake frame.

[0017] As a further technical solution, both ends of the mounting groove and the brake pad are bent to the side.

[0018] As a further technical solution, it also includes a controller, a battery pack, a solar panel, and a display. The controller, the battery pack, and the solar panel are all mounted on the mounting plate, and the display is linearly connected to the tension / compression sensor.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. The beneficial effects of the braking assembly in this disclosure are that the tension and compression sensor is directly installed between the brake frame and the side frame, which can capture the actual pressure value during braking in real time, avoiding the indirect measurement error of traditional solutions that rely on spring pressure calculation. When the brake pads wear out, fall off, or the friction coefficient of the brake drum changes, the sensor can immediately reflect the pressure abnormality and effectively identify the risk of brake torque attenuation. The cooperation between the movable rod and the spring ensures that the brake frame can move and reset flexibly. The connecting plate and the first bolt can adjust the extension length of the movable rod to adapt to different specifications of brake drums. The independent installation and replacement design of the brake pads facilitates maintenance and ensures stable braking performance. This assembly improves the accuracy of brake torque detection and the reliability of the braking system through direct measurement and structural optimization.

[0021] 2. The beneficial effects of the connecting and fixing components in this disclosure are as follows: the sliding connection structure between the connecting frame and the moving block allows for adjustment of the distance between the two side frames according to installation requirements, enhancing equipment compatibility; the fixing method of the studs and nuts ensures a firm connection, preventing the side frames from shaking and affecting the braking effect; the matching design of the socket and the moving block facilitates quick installation and disassembly, improving maintenance efficiency; this component provides stable mechanical support for the braking component, and through a flexible adjustment mechanism, it adapts to the installation requirements of different lifting platform structures, ensuring that the brake maintains a precise braking position during operation, indirectly improving the stability of braking torque detection and the smoothness of the braking process. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric drawing of the present disclosure;

[0025] Figure 3 This is an isometric drawing from another perspective of this disclosure;

[0026] Figure 4 This is a schematic diagram of the structure of this disclosure;

[0027] In the diagram: 1. Mounting plate; 2. Side frame; 3. Braking assembly; 3-1. Movable hole; 3-2. Movable rod; 3-3. Braking frame; 3-4. Tension / compression sensor; 3-5. Connecting plate; 3-6. First bolt; 3-7. Spring; 3-8. Mounting groove; 3-9. Brake pad; 3-10. Second bolt; 4. Connecting and fixing assembly; 4-1. Connecting frame; 4-2. Groove; 4-3. Inner rod; 4-4. Moving block; 4-5. Insertion hole; 4-6. Stud; 4-7. Nut; 5. Fixing hole; 6. Controller; 7. Battery pack; 8. Solar panel. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, a lifting mechanism brake with a braking torque sensor is illustrated in one embodiment of this disclosure, comprising:

[0035] Mounting plate 1 and a pair of side frames 2, the side frames 2 being rotatably connected to the mounting plate 1 by pins;

[0036] Braking assembly 3, which is mounted on the side frame 2;

[0037] A connecting and fixing component 4 is disposed at the outer end of the side frame 2;

[0038] The braking assembly 3 includes a pair of movable holes 3-1, which are formed at both ends of the surface of the side frame 2. A movable rod 3-2 is inserted into the movable hole 3-1. A brake frame 3-3 is connected to one end of the movable rod 3-2. A tension / compression sensor 3-4 is installed between the brake frame 3-3 and the side frame 2. A connecting plate 3-5 is fitted onto one end of the pair of movable rods 3-2. A first bolt 3-6 is installed at both ends of the surface of the connecting plate 3-5. The first bolt 3-6 is screwed into the movable rod 3-2. A spring 3-7 is fitted onto the movable rod 3-2. A mounting groove 3-8 is formed on the side surface of the side frame 2. A brake pad 3-9 is fitted into the mounting groove 3-8. A second bolt 3-10 is installed at both ends of the brake pad 3-9. The second bolt 3-10 is screwed into the mounting groove 3-8.

[0039] In some examples, a braking assembly 3 is designed to effectively brake the brake drum and monitor the braking torque in real time during the braking process of the elevator. This assembly is based on movable holes 3-1 at both ends of the side frame 2. A movable rod 3-2 inserted into the movable holes 3-1 can move the brake frame 3-3. A tension / compression sensor 3-4 installed between the brake frame 3-3 and the side frame 2 can detect pressure changes during braking in real time and convert the pressure signal into an electrical signal output, facilitating the control system's monitoring of whether the braking torque meets requirements. A connecting plate 3-5 fitted at one end of the movable rod 3-2 is fixedly connected to the movable rod 3-2 by a first bolt 3-6, allowing adjustment of the extension length of the movable rod 3-2 to accommodate different brake drum sizes. A spring 3-7 fitted on the movable rod 3-2 provides a return force to the brake frame 3-3. When braking ends, the spring 3-7 pushes the brake frame 3-3 back to its original position, releasing the braking state. Brake pads 3-9 fitted in the mounting grooves 3-8 on the side surface of the side frame 2 are fixed by bolts at both ends and can be replaced promptly according to wear conditions to ensure braking effectiveness.

[0040] Through the coordinated operation of components such as movable hole 3-1, movable rod 3-2, brake frame 3-3, tension / compression sensor 3-4, connecting plate 3-5, first bolt 3-6, spring 3-7, mounting groove 3-8, and brake pad 3-9, the braking assembly 3 achieves effective braking of the brake drum and real-time detection of braking torque.

[0041] like Figures 1-4 As shown in the figure, the connecting and fixing assembly 4 in this embodiment includes a connecting frame 4-1. A pair of grooves 4-2 are provided on the surface of the connecting frame 4-1. An inner rod 4-3 is provided in each groove 4-2. A movable block 4-4 is slidably connected to the inner rod 4-3. A insertion hole 4-5 is provided at one end of the side frame 2. One end of the movable block 4-4 is inserted into the insertion hole 4-5. A stud 4-6 is inserted between the movable block 4-4 and the side frame 2. A nut 4-7 is screwed to one end of the stud 4-6.

[0042] In some examples, a connecting and fixing assembly 4 is designed to stably connect and fix the two side frames 2 to the lifting structure. This assembly is supported by a pair of grooves 4-2 on the surface of the connecting frame 4-1, with an inner rod 4-3 within the grooves 4-2 providing a sliding track for the movable block 4-4. One end of the movable block 4-4 can be inserted into a socket 4-5 at one end of the side frame 2. By inserting a stud 4-6 and tightening a nut 4-7, the movable block 4-4 is fixedly connected to the side frame 2, thus achieving a secure connection between the two side frames 2 and the connecting frame 4-1. This structural design not only facilitates the installation and disassembly of the side frames 2 but also allows for adjustments to the position of the movable block 4-4 within the grooves 4-2 to accommodate installation requirements with different spacing.

[0043] Through the coordinated work of components such as connecting frame 4-1, groove 4-2, inner rod 4-3, moving block 4-4, insertion hole 4-5, stud 4-6 and nut 4-7, the connecting and fixing assembly 4 realizes the function of connecting the two side frames 2 together and effectively fixing them, providing a stable mechanical support structure for the lifting mechanism brake.

[0044] For example, such as Figure 1 As shown, the mounting plate 1 has several fixing holes 5 on its surface.

[0045] In some examples, the mounting plate 1 is connected to the device by having several fixing holes 5 through which fasteners can pass.

[0046] For example, such as Figure 2 As shown, the surface of the brake pad 3-9 is higher than the outer end face of the brake frame 3-3.

[0047] In some examples, it is ensured that the brake pad 3-9 is higher than the outer end face of the brake frame 3-3 and directly contacts the brake drum to achieve effective braking.

[0048] For example, such as Figure 2 As shown, both ends of the mounting groove 3-8 and the brake pad 3-9 are bent to the side.

[0049] In some examples, by bending both ends inward, the distance between the brake pad 3-9 and the mounting groove 3-8 can be increased.

[0050] For example, such as Figure 1 as well as Figure 4 As shown, it also includes a controller 6, a battery pack 7, a solar panel 8, and a display 9. The controller 6, the battery pack 7, and the solar panel 8 are all mounted on the mounting plate 1, and the display 9 is linearly connected to the tension and compression sensors 3-4.

[0051] In some examples, power can be provided by the solar panel 8, which is similar to the solar panels used in commercial calculators, through the controller 6, battery pack 7, solar panel, and display 8. The tension and compression sensors can display the data on the display 9 for easy viewing.

[0052] In practical use: The brake is securely installed onto the frame of the elevator using high-strength bolts through the evenly distributed fixing holes 5 on the surface of the mounting plate 1. The side frame 2 forms a rotating pair with the mounting plate 1 through a high-precision pin, ensuring that the side frame can swing flexibly during braking. The connecting bracket 4-1 of the connecting and fixing assembly 4 is arranged laterally, and the inner rod 4-3 passes through the groove 4-2 on its surface. The moving block 4-4 is slidably connected to the inner rod 4-3 through a linear bearing and can move freely along the inner rod 4-3. When it is necessary to adjust the distance between the two side frames 2, first loosen the nut 4-7 of the stud 4-6, push the moving block 4-4 to slide in the groove 4-2 to the appropriate position, and then tighten the nut 4-7 to fix the moving block 4-4 in the insertion hole 4-5 of the side frame 2. This design can quickly adapt to the installation requirements of brake drums with different wheelbases.

[0053] During braking, the hydraulic or pneumatic system pushes the movable rod 3-2 axially within the movable hole 3-1, causing the brake frame 3-3 to press against the brake drum with a set pressure. The rough-surfaced brake pad 3-9 contacts the brake drum, generating a frictional torque. At this time, the tension / compression sensor 3-4, installed between the brake frame 3-3 and the side frame 2, collects the normal pressure data between the two in real time through strain gauges and converts the mechanical signal into an electrical signal, which is then transmitted to the control system to achieve dynamic monitoring of the braking torque. The spring 3-7 is fitted onto the movable rod 3-2. After braking, it pushes the brake frame 3-3 back to its original position by elastic deformation, preventing the brake pad 3-9 from continuously rubbing against the brake drum. The brake pad 3-9 is fixed in the mounting groove 3-8 by bolts on both sides, with its surface extending 2-3mm beyond the outer end face of the brake frame 3-3 to ensure direct contact with the brake drum. The hook-shaped structure at both ends of the brake pad 3-9 bends inward and forms a mechanical lock with the groove of the mounting groove 3-8, preventing the brake pad from loosening and falling off due to vibration during braking, while also facilitating quick disassembly and replacement of worn parts. The entire system achieves integrated control of braking performance and torque monitoring through precise coordination of mechanical structures and real-time feedback from sensors.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An elevator brake having a brake torque sensor, characterized by Include: The mounting plate (1) and a pair of side frame (2), the side frame (2) is rotatably connected on the mounting plate (1) by pin shaft; Brake assembly (3), the brake assembly (3) is arranged on the side frame (2); The connecting fixed assembly (4) is arranged at the outer end of the side frame (2); The brake assembly (3) includes a pair of movable hole (3-1), the movable hole (3-1) is opened in the surface of the side frame (2) both ends, the movable hole (3-1) is inserted and connected with movable rod (3-2), one end of the movable rod (3-2) is connected with brake frame (3-3), the brake frame (3-3) is installed with tension sensor (3-4) between the side frame (2).

2. An elevator brake with brake torque sensor according to claim 1, characterized in that One end of a pair of the movable rod (3-2) is sleeved with connecting plate (3-5), the surface of the connecting plate (3-5) is both installed with first bolt (3-6), the first bolt (3-6) is connected in the movable rod (3-2) by screw thread, the movable rod (3-2) is sleeved with spring (3-7).

3. An elevator brake with brake torque sensor according to claim 2, characterized in that The side surface of the side frame (2) is provided with mounting groove (3-8), the mounting groove (3-8) is sleeved with brake pad (3-9), the second bolt (3-10) is installed at both ends of the brake pad (3-9), and the second bolt (3-10) is connected with the mounting groove (3-8) by screw thread.

4. An elevator brake with brake torque sensor according to claim 1, characterized in that The connecting fixed assembly (4) includes connecting frame (4-1), a pair of recesses (4-2) are formed in the surface of the connecting frame (4-1), and inner rods (4-3) are arranged in the recesses (4-2). The inner rod (4-3) is slidably sleeved with a moving block (4-4).

5. An elevator brake with brake torque sensor according to claim 4, characterized in that One end of the side frame (2) is provided with a bushing (4-5), one end of the moving block (4-4) is inserted into the bushing (4-5), a stud (4-6) is inserted between the moving block (4-4) and the side frame (2), and one end of the stud (4-6) is connected with a nut (4-7) by screw thread.

6. An elevator brake with brake torque sensor according to claim 1, characterized in that The surface of the mounting plate (1) is provided with a plurality of fixing holes (5).

7. An elevator brake with brake torque sensor according to claim 3, characterized in that The surface of the brake pad (3-9) is higher than the outer end surface of the brake frame (3-3).

8. An elevator brake with brake torque sensor according to claim 3, characterized in that The mounting groove (3-8) and the brake pad (3-9) are both bent to the side.

9. An elevator brake with brake torque sensor according to claim 3, characterized in that It also includes a controller (6), a battery pack (7), a solar panel (8) and a display (9), the controller (6), the battery pack (7) and the solar panel (8) are arranged on the mounting plate (1), and the display (9) is linearly connected with the tension sensor (3-4).

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