A loom motor braking device

Abstract

This invention relates to the field of textile machinery technology, specifically to a loom motor braking device. The device mainly includes a brake drum, a U-shaped frame, a push plate, a brake plate composed of first and second clamping plates, a friction-increasing mechanism, an energy-storing spring, and a positioning mechanism. In the non-braking state, the positioning mechanism locks the position of the U-shaped frame and the push plate to compress the energy-storing spring. When braking is applied or there is an unexpected power outage, the positioning mechanism releases its lock, and the energy-storing spring releases its elastic force to drive the push plate and the U-shaped frame to slide relative to each other, causing the two clamping plates to clamp the brake drum. During clamping, the friction-increasing mechanism converts tangential friction force into radial compression displacement, achieving a self-locking force-increasing effect. This invention triggers braking through pure mechanical potential energy, solving the dependence of traditional devices on a power source and ensuring absolute safety in the event of a power outage. Simultaneously, the energy-storing spring provides elastic buffering, effectively absorbing reverse impact force, avoiding damage to the motor shaft system, and significantly improving braking efficiency and smoothness.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, specifically to a loom motor braking device. Background Technology

[0002] In the field of modern textile machinery technology, energy-saving loom motors are typically used as the power core to reduce production energy consumption. These motors have significant rotational kinetic energy and inertia when operating at high speeds, which requires their matching braking system to have extremely high response speed and braking reliability to prevent fabric damage or equipment safety accidents caused by the motor continuing to rotate due to inertia during emergency stops.

[0003] Currently, existing loom motor braking devices generally have the following shortcomings:

[0004] First, most traditional braking devices rely on an external drive source to actively output clamping force. This "active force application" braking logic poses a significant safety hazard: if the loom experiences an unexpected power outage or a control system malfunction, the external drive source will instantly lose power, causing the braking device to be unable to apply sufficient clamping force and thus failing to meet the emergency braking requirements in sudden situations.

[0005] Secondly, in existing braking systems, the external drive source typically needs to maintain direct power coupling with the braking actuator to maintain clamping pressure during braking. At the moment of high-speed braking, the intense impact force and high-frequency vibration generated at the braking interface produce a reverse load along the power transmission path. This bidirectional force not only causes radial impact on the motor output shaft, leading to uneven wear of the motor bearings or deformation of the shaft system, but also directly feeds back to the precision transmission structure of the external drive source. Over time, the external drive source, subjected to this sudden reverse impact for extended periods, is highly susceptible to mechanical fatigue, seal failure, or precision deviations, resulting in damage to both the motor and the drive system, significantly shortening the overall service life of the device.

[0006] Third, existing braking devices typically use fixed mechanical pressure for clamping, and the locking force is entirely limited by the rated thrust of the external drive source. For energy-efficient motors with high inertia, high-power drive components are often required to achieve rapid braking. Furthermore, existing braking structures are limited in form, and when friction occurs between the braking components and rotating parts, the generated tangential friction force cannot be effectively converted, resulting in low braking energy dissipation efficiency and making it difficult to achieve extremely fast and smooth braking. Summary of the Invention

[0007] Therefore, it is necessary to provide a loom motor braking device to address the existing technical problems.

[0008] To solve the problems of the prior art, the technical solution adopted by the present invention is: a loom motor braking device, comprising:

[0009] The brake drum is coaxially and fixedly connected to the output end of the motor.

[0010] A U-shaped frame is slidably disposed along the radial direction of the brake drum, with the brake drum located within the opening of the U-shaped frame;

[0011] The push plate is slidably connected to one side of the U-shaped frame;

[0012] The brake plate includes a first clamping plate and a second clamping plate located on opposite sides of the brake drum, the first clamping plate being connected to the U-shaped frame and the second clamping plate being connected to the push plate;

[0013] The friction amplification mechanism has two sets, respectively located between the first clamping plate and the U-shaped frame, and between the second clamping plate and the push plate. When the first clamping plate and the second clamping plate are subjected to frictional force along the rotation direction of the brake drum, the mechanism guides the first clamping plate and the second clamping plate to generate radial pressing displacement toward the brake drum.

[0014] An energy storage spring is disposed between the push plate and the U-shaped frame, and is used to drive the push plate and the U-shaped frame to slide relative to each other in the released state, so as to simultaneously drive the first clamping plate and the second clamping plate to clamp the brake drum in opposite directions;

[0015] A positioning mechanism, connected to the U-shaped frame and the push plate, is used to lock the position of the U-shaped frame and the push plate to compress the energy storage spring in a non-braking state, and to release the locking of the U-shaped frame and the push plate in a braking state.

[0016] Furthermore, the two sets of friction amplification mechanisms are centrally symmetrically distributed about the brake drum. Each set of friction amplification mechanisms includes a slider and an inclined guide rail. The inclined guide rail is provided with a guide groove. The two sliders are respectively fixedly connected to the first clamping plate and the second clamping plate. The two inclined guide rails are respectively fixedly connected to the U-shaped frame and the push plate. The guide groove is a dovetail groove. The slider slides in cooperation with the corresponding guide groove. The extension direction of the guide groove is inclined inward relative to the tangential direction of the brake drum.

[0017] Furthermore, each of the guide grooves is fixedly provided with a limiting block and a stop block that are spaced apart along its length. The slider is located between the limiting block and the stop block. A plurality of return springs are provided between the stop block and the slider. The return springs are used to press the slider against the limiting block.

[0018] Furthermore, the push plate is vertically arranged and located between the second clamping plate and the U-shaped frame. The push plate is fixedly provided with a plurality of limiting shafts passing through the U-shaped frame. The push plate is slidably connected to the U-shaped frame through the plurality of limiting shafts, and the sliding direction is parallel to the sliding direction of the U-shaped frame. A plurality of energy storage springs are provided and are respectively sleeved on the plurality of limiting shafts. Both ends of each energy storage spring abut against the push plate and the U-shaped frame respectively.

[0019] Furthermore, a support base for motor installation is provided below the brake drum. A receiving groove is provided in the support base. Two sets of symmetrically arranged guide shafts are fixed in the receiving groove. Sliding sleeves, respectively sleeved on the two sets of guide shafts, are fixed on both sides of the U-shaped frame.

[0020] Furthermore, the positioning mechanism includes a first electrically controlled drive component located beside the U-shaped frame. The first electrically controlled drive component includes a first electric cylinder and a first electromagnetic telescopic pin. The first electric cylinder is fixedly connected to the support base, and the first electromagnetic telescopic pin is fixedly connected to the output end of the first electric cylinder. The output direction of the first electric cylinder is consistent with the sliding direction of the U-shaped frame. One end of each of the plurality of limiting shafts is fixedly provided with a limiting strip plate that is opposite to the push plate. The first electromagnetic telescopic pin abuts against the limiting strip plate and, through the retraction of the output end of the first electric cylinder, drives the push plate to compress the energy storage spring.

[0021] Furthermore, the positioning mechanism also includes a second electrically controlled drive component located below the U-shaped frame. The second electrically controlled drive component includes a second electric cylinder and a second electromagnetic telescopic pin. The second electric cylinder is fixedly connected to the support base, and the second electromagnetic telescopic pin is fixedly connected to the output end of the second electric cylinder. The output direction of the second electric cylinder is consistent with the sliding direction of the U-shaped frame. A baffle is fixedly provided at the bottom of the U-shaped frame. The second electromagnetic telescopic pin abuts against the baffle and drives the U-shaped frame to reset by extending the output end of the second electric cylinder.

[0022] Furthermore, a first sensing and positioning element is provided between the first electronically controlled drive component and the support base. The first sensing and positioning element includes a first laser emitter and a first laser receiver. The first laser emitter is fixedly connected to the output end of the first electric cylinder, and the first laser receiver is fixedly connected to the support base. The first laser receiver is used to receive the light beam emitted by the first laser emitter and generate an electrical signal to control the first electric cylinder to stop running.

[0023] Furthermore, a second sensing and positioning element is provided between the second electronically controlled drive component and the support base. The second sensing and positioning element includes a second laser emitter and a second laser receiver. The second laser emitter is fixedly connected to the output end of the second electric cylinder, and the second laser receiver is fixedly connected to the support base. The second laser receiver is used to receive the light beam emitted by the second laser emitter and generate an electrical signal to control the second electric cylinder to stop running.

[0024] Furthermore, a friction ring is fixedly provided on the peripheral wall of the brake drum, and both the first clamping plate and the second clamping plate are arc-shaped, and friction plates that cooperate with the friction ring are fixedly provided on the concave surfaces of both.

[0025] The beneficial effects of this invention compared to the prior art are:

[0026] This invention solves the problem of traditional braking relying on an external power source by combining a positioning mechanism with an energy storage spring. It enables braking triggered by pure mechanical potential energy in emergency situations or power outages, ensuring the absolute safety of the energy-saving loom motor. Simultaneously, the energy storage spring releases its elastic force to perform braking, creating an elastic buffer between the braking interface and the positioning mechanism. This effectively absorbs and blocks the reverse impact force generated during braking, preventing mechanical damage to the motor shaft system and external drive source from bidirectional forces, and significantly extending the equipment's service life. Furthermore, the friction amplification mechanism cleverly converts the tangential friction force generated by the motor's rotation into radial clamping displacement, achieving a self-locking effect where braking force increases with inertia, greatly improving the braking efficiency and smoothness of high-inertia motors. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0029] Figure 3 yes Figure 2 A magnified view of the area indicated by A1 in the diagram;

[0030] Figure 4 yes Figure 2 The enlarged view of the area indicated by A2 in the diagram;

[0031] Figure 5 This is a planar schematic diagram of the present invention;

[0032] Figure 6 yes Figure 5 The enlarged view of the area indicated in A3;

[0033] Figure 7 yes Figure 5 The enlarged view shown in section A4;

[0034] Figure 8 This is a planar schematic diagram showing the brake drum clamped together by the first and second clamping plates facing each other.

[0035] Figure 9 This is a planar sectional view of the first clamping plate and the friction amplification mechanism;

[0036] Figure 10 This is a three-dimensional structural diagram of the inclined guide rail;

[0037] Figure 11 This is a three-dimensional structural diagram of the second clamping plate and the slider.

[0038] The following components are labeled in the diagram: 1. Brake drum; 2. U-shaped frame; 3. Push plate; 4. First clamping plate; 5. Second clamping plate; 6. Friction amplification mechanism; 7. Energy storage spring; 8. Slider; 9. Inclined guide rail; 10. Guide groove; 11. Limiting block; 12. Stop block; 13. Return spring; 14. Limiting shaft; 15. Support base; 16. Receiving groove; 17. Guide shaft; 18. Sliding sleeve; 19. First electric control drive component; 20. First electric cylinder; 21. First electromagnetic telescopic pin; 22. Limiting strip; 23. Second electric control drive component; 24. Second electric cylinder; 25. Second electromagnetic telescopic pin; 26. Baffle; 27. First laser emitter; 28. First laser receiver; 29. ​​Second laser emitter; 30. Second laser receiver; 31. Friction ring; 32. Friction plate. Detailed Implementation

[0039] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0040] In the field of modern textile machinery technology, to reduce production energy consumption and improve response speed, an energy-saving loom motor is typically used as the power core. This energy-saving loom motor reduces energy loss through high-efficiency electromagnetic conversion, but its inertial stopping requirements at high speeds place extremely high demands on the reliability of the braking system. To match this energy-saving loom motor, reference... Figures 1 to 11As shown, this embodiment provides a loom motor braking device. Its overall structure is based on the efficient control of the kinetic energy output of the energy-saving loom motor. The device includes a brake drum 1 coaxially fixed to the output of the energy-saving motor. The brake drum 1 serves as a carrier of rotational kinetic energy, and its rotational state directly reflects the motor's operating status. A U-shaped frame 2 is slidably arranged radially outside the brake drum 1, with the brake drum 1 located inside the opening of the U-shaped frame 2. This structural layout ensures that subsequent braking actions can be initiated synchronously from both sides of the brake drum 1. A push plate 3 is slidably connected to one side of the U-shaped frame 2. The push plate 3 serves as a power transmission and transfer component, responsible for guiding the braking pressure to the braking end. The braking core is composed of a brake plate, which includes a first clamping plate 4 and a second clamping plate 5 located on opposite sides of the brake drum 1. The first clamping plate 4 is connected to the U-shaped frame 2, and the second clamping plate 5 is connected to the push plate 3. The relative movement of the first clamping plate 4 and the second clamping plate 5 achieves clamping and braking of the brake drum 1.

[0041] In order to achieve a stronger braking effect with a limited initial force, such as Figure 1 and Figure 2 As shown, a set of friction amplification mechanisms 6 is provided between the first clamping plate 4 and the U-shaped frame 2, and between the second clamping plate 5 and the push plate 3, for a total of two sets. These two sets of friction amplification mechanisms 6 are used to guide the first clamping plate 4 and the second clamping plate 5 to generate radial pressing displacement toward the brake drum 1 when the first clamping plate 4 and the second clamping plate 5 are subjected to frictional force along the rotation direction of the brake drum 1, thereby using the rotational tendency of the brake drum 1 itself to further enhance the clamping force; as Figures 9 to 11 As shown, each set of friction amplification mechanisms 6 specifically includes a slider 8 and an inclined guide rail 9. The inclined guide rail 9 has a guide groove 10. The two sliders 8 are fixedly connected to the first clamping plate 4 and the second clamping plate 5, respectively. The two inclined guide rails 9 are fixedly connected to the U-shaped frame 2 and the push plate 3, respectively. The guide groove 10 adopts a dovetail groove structure, and the slider 8 slides in conjunction with the corresponding guide groove 10. This cooperation method ensures the smoothness of sliding and the ability to resist derailment. To make the force amplification effect directionally targeted, the extension direction of the guide groove 10 is inclined inward relative to the tangential direction of the brake drum 1. Furthermore, the two sets of friction amplification mechanisms 6 are centrally symmetrically distributed about the brake drum 1, which allows the brake drum 1 to rotate unidirectionally. During rotation, the frictional force acting on the first clamping plate 4 and the second clamping plate 5 can be converted into radial pressure pointing towards the center of the brake drum 1. It should be noted that when machining the slider 8 and the guide groove 10, the size of the guide groove 10 will be slightly larger than that of the slider 8, and there is a small radial gap between the two. This small gap is used to compensate for the small tangential displacement tendency of the first clamping plate 4 and the second clamping plate 5 that may be generated due to friction when the brake drum 1 rotates at high speed and comes into contact with and holds the first clamping plate 4 and the second clamping plate 5. Furthermore, the oblique displacement distance of the slider 8 along the guide groove 10 is very small, so that the first clamping plate 4 and the second clamping plate 5 will not be misaligned and unable to accurately fit the brake drum 1.

[0042] To ensure that the brake plate can smoothly return to its initial standby state after the loss of friction, such as Figure 9 and Figure 10 As shown, each guide groove 10 is fixedly provided with a limiting block 11 and a stop block 12 distributed at intervals along its length. The slider 8 is limited between the limiting block 11 and the stop block 12. Several return springs 13 are also provided between the stop block 12 and the slider 8. The function of the return spring 13 is to continuously generate a preload force to press the slider 8 against the limiting block 11, ensuring that the brake plate is in the initially set open position in the non-braking state, and avoiding frictional wear caused by accidental contact.

[0043] To meet the stringent requirements for braking timeliness of energy-saving loom motors, such as Figure 2 and Figure 5 As shown, an energy storage spring 7 is provided between the push plate 3 and the U-shaped frame 2. When the energy storage spring 7 is released, it drives the push plate 3 and the U-shaped frame 2 to slide relative to each other. Due to the presence of the reaction force, this relative sliding can simultaneously drive the first clamping plate 4 and the second clamping plate 5 to move towards each other and clamp the brake drum 1. Specifically, the push plate 3 is vertically arranged and located between the second clamping plate 5 and the U-shaped frame 2. Several limiting shafts 14 passing through the U-shaped frame 2 are fixed on the push plate 3. The push plate 3 achieves a stable and axially aligned sliding connection with the U-shaped frame 2 through the several limiting shafts 14, and the sliding direction is parallel to the overall sliding direction of the U-shaped frame 2. In this structure, several energy storage springs 7 are provided and are respectively sleeved on several limiting shafts 14. The two ends of each energy storage spring 7 abut against the push plate 3 and the U-shaped frame 2 respectively, thus forming a powerful elastic potential energy storage unit to provide the necessary power source for instantaneous braking.

[0044] To provide a mounting base for the entire device, such as Figure 5 As shown, a support base 15 for motor mounting is provided below the brake drum 1. A receiving groove 16 is provided in the support base 15. Two sets of symmetrically arranged guide shafts 17 are fixed in the receiving groove 16. By fixing sliding sleeves 18 on the two sets of guide shafts 17 on both sides of the U-shaped frame 2, the U-shaped frame 2 can slide precisely and with low friction in a straight reciprocating motion along the axial direction of the guide shafts 17. This not only ensures that the braking action path is controllable, but also further reduces the frictional resistance during mechanical operation.

[0045] To precisely control the maintenance of the energy storage state and the activation of the braking state, this embodiment incorporates a positioning mechanism, such as... Figures 1 to 3As shown, the positioning mechanism is connected to the U-shaped frame 2 and the push plate 3. Its core function is to lock the position of the U-shaped frame 2 and the push plate 3 in the non-braking state to maintain the extreme compression of the energy storage spring 7, and to release the lock on both instantaneously in the braking state. Specifically, the positioning mechanism includes a first electrically controlled drive component 19 located on the side of the U-shaped frame 2. The first electrically controlled drive component 19 includes a first electric cylinder 20 and a first electromagnetic telescopic pin 21. The first electric cylinder 20 is fixedly connected to the support base 15, and the first electromagnetic telescopic pin 21 is fixedly connected to the output end of the first electric cylinder 20. The output direction of the first electric cylinder 20 is consistent with the sliding direction of the U-shaped frame 2, and a limiting strip 22 is fixedly provided at one end of several limiting shafts 14, which is opposite to the push plate 3. When the first electromagnetic telescopic pin 21 extends and abuts against the limiting strip 22, the push plate 3 can be forcibly driven to compress the energy storage spring 7 by the retraction of the output end of the first electric cylinder 20, converting mechanical energy into spring potential energy for storage.

[0046] Meanwhile, in order to achieve locking and reset control on the other side of the U-shaped frame 2, such as Figure 1 , Figure 2 and Figure 4 As shown, the positioning mechanism also includes a second electrically controlled drive unit 23 located below the U-shaped frame 2. The second electrically controlled drive unit 23 includes a second electric cylinder 24 and a second electromagnetic telescopic pin 25. The second electric cylinder 24 is fixedly connected to the support base 15, and the second electromagnetic telescopic pin 25 is fixedly connected to the output end of the second electric cylinder 24. The output direction of the second electric cylinder 24 is also consistent with the sliding direction of the U-shaped frame 2. A baffle 26 is fixedly provided at the bottom of the U-shaped frame 2. When the second electromagnetic telescopic pin 25 extends and abuts against the baffle 26, the extension of the output end of the second electric cylinder 24 can drive the U-shaped frame 2 to move. In conjunction with the action of the first electric cylinder 20, the first clamping plate 4 and the second clamping plate 5 move away from the brake drum 1 at the same time, thus completing the release of the brake and reset.

[0047] In the pursuit of automated and precise control, to achieve close monitoring of the electric cylinder's stroke, a first sensing and positioning element is provided between the first electronically controlled drive component 19 and the support base 15, such as... Figures 2 to 4 As shown, the first sensing and positioning component includes a first laser emitter 27 and a first laser receiver 28. The first laser emitter 27 is fixedly connected to the output end of the first electric cylinder 20 and moves synchronously, while the first laser receiver 28 is fixedly connected to the support base 15. The first laser receiver 28 locates the position of the electric cylinder by receiving the light beam emitted by the first laser emitter 27 and generates an electrical signal, which is fed back to the central control system to control the first electric cylinder 20 to stop running. Similarly, a second sensing and positioning component with the same structure is also provided between the second electronically controlled drive component 23 and the support base 15, including a second laser emitter 29 that moves with the output end of the second electric cylinder 24 and a second laser receiver 30 fixed on the support base 15. Its function is to control the precise stop of the second electric cylinder 24.

[0048] To further improve the braking performance of the friction interface, such as Figure 8 As shown, a high-friction coefficient friction ring 31 is fixedly provided on the peripheral wall of the brake drum 1. The first clamping plate 4 and the second clamping plate 5 are both adapted arc-shaped structures, and friction plates 32 are fixedly provided on the concave surfaces of the first clamping plate 4 and the second clamping plate 5. The friction plates 32 directly contact the friction ring 31 to generate braking resistance. This arc-shaped contact design not only increases the friction area, but also ensures the uniformity of pressure distribution, making the braking process more stable and efficient.

[0049] In actual operation, this device can be used in the event of a power outage and when emergency braking of the motor is required. These two uses do not conflict; instead, they share the same purely mechanical release logic to ensure the absolute safety of the energy-saving loom motor. Specifically, in the non-braking state, the first electromagnetic telescopic pin 21 abuts against the limiting strip 22, the first electric cylinder 20 retracts to pull the push plate 3, and simultaneously the second electromagnetic telescopic pin 25 abuts against the baffle 26, and the second electric cylinder 24 extends to push the U-shaped frame 2. The combination of these two actions causes the energy storage spring 7 to be in a state of extreme compression, and the first clamping plate 4 and the second clamping plate 5 leave gaps with the brake drum 1, allowing the motor to rotate freely. When emergency braking is required... When an emergency braking operation is performed or a power outage occurs due to an unexpected situation, the first electromagnetic telescopic pin 21 and the second electromagnetic telescopic pin 25 will retract due to receiving a control signal or direct power failure, and will simultaneously release the physical constraints on the limit bar 22 and the baffle 26. At this time, the energy storage spring 7 will release a strong elastic force, driving the push plate 3 and the U-shaped frame 2 to move relative to each other, so that the first clamping plate 4 and the second clamping plate 5 will quickly clamp the brake drum 1. Subsequently, the rotational friction force generated by the residual potential energy of the brake drum 1 will be converted into a radial displacement driving force that drives the first clamping plate 4 and the second clamping plate 5 to press against the brake drum 1 through the cooperation of the slider 8 and the guide groove 10, thereby forming a self-locking force amplification effect until the motor is completely stopped.

[0050] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A loom motor braking device, characterized in that, include: Brake drum (1) is coaxially fixed to the output end of the motor; The U-shaped frame (2) is slidably arranged along the radial direction of the brake drum (1), and the brake drum (1) is located inside the opening of the U-shaped frame (2); The push plate (3) is slidably connected to one side of the U-shaped frame (2); The brake plate includes a first clamping plate (4) and a second clamping plate (5) located on opposite sides of the brake drum (1), the first clamping plate (4) being connected to the U-shaped frame (2), and the second clamping plate (5) being connected to the push plate (3); The friction amplification mechanism (6) has two sets, which are respectively located between the first clamping plate (4) and the U-shaped frame (2) and between the second clamping plate (5) and the push plate (3). When the first clamping plate (4) and the second clamping plate (5) are subjected to frictional force along the rotation direction of the brake drum (1), the first clamping plate (4) and the second clamping plate (5) are guided to generate radial pressing displacement toward the brake drum (1). An energy storage spring (7) is provided between the push plate (3) and the U-shaped frame (2) to drive the push plate (3) and the U-shaped frame (2) to slide relative to each other in the released state, so as to simultaneously drive the first clamping plate (4) and the second clamping plate (5) to clamp the brake drum (1) in opposite directions. The positioning mechanism is connected to the U-shaped frame (2) and the push plate (3) to lock the position of the U-shaped frame (2) and the push plate (3) in the non-braking state to compress the energy storage spring (7), and to release the locking of the U-shaped frame (2) and the push plate (3) in the braking state.

2. The loom motor braking device according to claim 1, characterized in that, The two sets of friction amplification mechanisms (6) are centrally symmetrical about the brake drum (1). Each set of friction amplification mechanisms (6) includes a slider (8) and an inclined guide rail (9). The inclined guide rail (9) is provided with a guide groove (10). The two sliders (8) are fixedly connected to the first clamping plate (4) and the second clamping plate (5) respectively. The two inclined guide rails (9) are fixedly connected to the U-shaped frame (2) and the push plate (3) respectively. The guide groove (10) is a dovetail groove. The slider (8) slides in cooperation with the corresponding guide groove (10). The extension direction of the guide groove (10) is inclined inward relative to the tangential direction of the brake drum (1).

3. The loom motor braking device according to claim 2, characterized in that, Each guide groove (10) is fixedly provided with a limiting block (11) and a stop block (12) distributed at intervals along its length. The slider (8) is located between the limiting block (11) and the stop block (12). A plurality of return springs (13) are provided between the stop block (12) and the slider (8). The return springs (13) are used to press the slider (8) against the limiting block (11).

4. The loom motor braking device according to claim 1, characterized in that, The push plate (3) is vertically arranged and located between the second clamping plate (5) and the U-shaped frame (2). The push plate (3) is fixedly provided with a number of limiting shafts (14) passing through the U-shaped frame (2). The push plate (3) is slidably connected to the U-shaped frame (2) through the number of limiting shafts (14), and the sliding direction is parallel to the sliding direction of the U-shaped frame (2). There are a number of energy storage springs (7), which are respectively sleeved on the number of limiting shafts (14). The two ends of each energy storage spring (7) abut against the push plate (3) and the U-shaped frame (2) respectively.

5. A loom motor braking device according to claim 4, characterized in that, The brake drum (1) is provided with a support base (15) for motor installation below it. The support base (15) has a receiving groove (16) inside it. Two sets of symmetrically arranged guide shafts (17) are fixed in the receiving groove (16). Sliding sleeves (18) respectively sleeved on the two sets of guide shafts (17) are fixed on both sides of the U-shaped frame (2).

6. A loom motor braking device according to claim 5, characterized in that, The positioning mechanism includes a first electrically controlled drive unit (19) located beside the U-shaped frame (2). The first electrically controlled drive unit (19) includes a first electric cylinder (20) and a first electromagnetic telescopic pin (21). The first electric cylinder (20) is fixedly connected to the support base (15), and the first electromagnetic telescopic pin (21) is fixedly connected to the output end of the first electric cylinder (20). The output direction of the first electric cylinder (20) is consistent with the sliding direction of the U-shaped frame (2). One end of a plurality of limiting shafts (14) is fixedly provided with a limiting strip (22) that is opposite to the push plate (3). The first electromagnetic telescopic pin (21) abuts against the limiting strip (22) and drives the push plate (3) to compress the energy storage spring (7) by the retraction of the output end of the first electric cylinder (20).

7. A loom motor braking device according to claim 6, characterized in that, The positioning mechanism also includes a second electrically controlled drive component (23) located below the U-shaped frame (2). The second electrically controlled drive component (23) includes a second electric cylinder (24) and a second electromagnetic telescopic pin (25). The second electric cylinder (24) is fixedly connected to the support base (15), and the second electromagnetic telescopic pin (25) is fixedly connected to the output end of the second electric cylinder (24). The output direction of the second electric cylinder (24) is consistent with the sliding direction of the U-shaped frame (2). A baffle (26) is fixedly provided at the bottom of the U-shaped frame (2). The second electromagnetic telescopic pin (25) abuts against the baffle (26) and drives the U-shaped frame (2) to reset by extending the output end of the second electric cylinder (24).

8. A loom motor braking device according to claim 6, characterized in that, A first sensing and positioning component is provided between the first electronically controlled drive component (19) and the support base (15). The first sensing and positioning component includes a first laser emitter (27) and a first laser receiver (28). The first laser emitter (27) is fixedly connected to the output end of the first electric cylinder (20), and the first laser receiver (28) is fixedly connected to the support base (15). The first laser receiver (28) is used to receive the light beam emitted by the first laser emitter (27) and generate an electrical signal to control the first electric cylinder (20) to stop running.

9. A loom motor braking device according to claim 7, characterized in that, A second sensing and positioning component is provided between the second electronically controlled drive component (23) and the support base (15). The second sensing and positioning component includes a second laser emitter (29) and a second laser receiver (30). The second laser emitter (29) is fixedly connected to the output end of the second electric cylinder (24), and the second laser receiver (30) is fixedly connected to the support base (15). The second laser receiver (30) is used to receive the light beam emitted by the second laser emitter (29) and generate an electrical signal to control the second electric cylinder (24) to stop running.

10. A loom motor braking device according to claim 1, characterized in that, A friction ring (31) is fixedly provided on the peripheral wall of the brake drum (1). The first clamping plate (4) and the second clamping plate (5) are both arc-shaped, and the concave surfaces of both are fixedly provided with friction plates (32) that cooperate with the friction ring (31).

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