Linear motor power-off brake mechanism using a cylinder

Abstract

The utility model relates to linear motor technical field especially utilizes linear motor power failure to hold brake mechanism of cylinder, and it includes stator track, linear motor and hold brake mechanism, hold brake mechanism includes structure board, and the structure board upside fixed mounting has cylinder, and cylinder output end slides through to structure board bottom and cylinder output end fixed mounting has valve plate on, and the valve plate downside screw joint installation has flat brake piece, and the structure board downside symmetry fixed connection has the lower extension board, and the lower extension board rotates and installs the pivot on, and the pivot outer wall is equipped with torsion return spring, and the pivot fixed mounting has the bent rod seat on, and the bent rod seat bottom side face screw joint installation has side brake piece, and the valve plate both sides symmetry fixed mounting has the push board, the utility model discloses through setting hold brake mechanism, and the whole hold brake mechanism can lock linear motor after power failure instantaneously, and the locking is stable, and further has the stable positioning effect of helping linear motor in daily use, improves linear motor's use security.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, and in particular to a linear motor power failure brake mechanism utilizing a cylinder. Background Technology

[0002] The core difference between linear motors and rotary motors is that the former does not have mechanical transmission components such as lead screws and gears. While this design brings transmission advantages, it also makes it lack self-locking function.

[0003] When the system loses power, the motor's mover and stator immediately lose their magnetic constraint. If the load is in motion at this time, it will continue to move due to inertia. If the equipment is installed vertically, the load will also fall due to gravity. Both of these situations may directly lead to equipment damage and scrapped products, and in severe cases, may even cause personal safety accidents.

[0004] To address the aforementioned issues, we propose a linear motor power failure brake mechanism utilizing a cylinder. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a linear motor power failure brake mechanism utilizing a cylinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A linear motor power failure brake mechanism utilizing a cylinder includes a stator rail, a linear motor, and a brake mechanism. The brake mechanism includes a structural plate, on the upper side of which a cylinder is fixedly mounted. The output end of the cylinder slides through to the bottom of the structural plate, and a valve plate is fixedly mounted on the output end of the cylinder. A flat brake pad is screwed onto the lower side of the valve plate. A lower extension plate is symmetrically fixedly connected to the lower side of the structural plate. A rotating shaft is rotatably mounted on the lower extension plate. A torque return spring is sleeved on the outer wall of the rotating shaft. A bent rod seat is fixedly mounted on the rotating shaft. A side brake pad is screwed onto the bottom side of the bent rod seat. Push plates are symmetrically fixedly mounted on both sides of the valve plate, and the upper side of the bent rod seat abuts against the bottom of the push plate.

[0008] Furthermore, indicator lights and an acceleration sensor are fixedly mounted on the structural plate.

[0009] Furthermore, a controller is fixedly installed on the upper side of the linear motor, and the structural plate is screwed onto the side wall of the linear motor.

[0010] Furthermore, both the flat brake pads and the side brake pads are made of ceramic material, and both the flat brake pads and the side brake pads have concave threaded holes on their surfaces.

[0011] Furthermore, the torsion return spring is made of durable stainless steel.

[0012] Furthermore, a T-shaped linear track is symmetrically fixedly installed on the upper side of the stator track, and a permanent magnet drive track is fixedly installed at the center line position on the upper side of the stator track.

[0013] Furthermore, friction textures are evenly distributed on the inner wall of the T-shaped linear track.

[0014] Furthermore, the linear motor is slidably engaged on the upper side of the T-shaped linear track.

[0015] Compared with related technologies, the linear motor power failure brake mechanism using a cylinder proposed in this utility model has the following advantages:

[0016] In this utility model, a linear motor power failure braking mechanism utilizing a cylinder is described. When the linear motor loses power, the cylinder in the braking mechanism immediately activates, pushing the valve plate downwards rapidly. This causes the push plate to press the flat brake pads against the upper side of the T-shaped linear track, creating a braking effect. Simultaneously, the push plates on both sides press down, causing the bent rod seats to rotate and overcome the return torque of the torque return spring. This, in turn, synchronously drives the side brake pads on the inner side of the bent rod seats to press against the inner side of the T-shaped linear track. The friction texture between the pads and the inner side of the T-shaped linear track enhances the braking effect. This combined pressure braking and side-braking braking method allows the entire braking mechanism to instantly lock the linear motor after power failure, ensuring stable locking. This also contributes to the stable positioning of the linear motor during daily use, improving its safety. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a linear motor power failure brake mechanism utilizing a cylinder, as proposed in this utility model. Figure 1 ;

[0018] Figure 2 A three-dimensional structural diagram of a linear motor power failure brake mechanism utilizing a cylinder, as proposed in this utility model. Figure 2 ;

[0019] Figure 3 A three-dimensional structural diagram of the brake mechanism. Figure 1 ;

[0020] Figure 4 A three-dimensional structural diagram of the brake mechanism. Figure 2 ;

[0021] Figure 5 A three-dimensional structural diagram of the brake mechanism. Figure 3 .

[0022] In the diagram: 1. Stator track; 2. T-shaped linear track; 3. Friction pattern; 4. Permanent magnet drive track; 5. Linear motor; 6. Controller; 7. Brake mechanism; 71. Structural plate; 72. Indicator light; 73. Acceleration sensor; 74. Cylinder; 75. Valve plate; 76. Push plate; 77. Lower extension plate; 78. Rotary shaft; 79. Torque return spring; 710. Bending rod seat; 711. Flat brake pad; 712. Side brake pad. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1-5 A linear motor power failure brake mechanism utilizing a cylinder includes a stator rail 1, a linear motor 5, and a brake mechanism 7. The brake mechanism 7 includes a structural plate 71, a cylinder 74 fixedly mounted on the upper side of the structural plate 71, the output end of the cylinder 74 sliding through to the bottom of the structural plate 71, and a valve plate 75 fixedly mounted on the output end of the cylinder 74. A flat brake pad 711 is screwed onto the lower side of the valve plate 75. A lower extension plate 77 is symmetrically fixedly connected to the lower side of the structural plate 71. A rotating shaft 78 is rotatably mounted on the lower extension plate 77. A torque return spring 79 is sleeved on the outer wall of the rotating shaft 78. A bent rod seat 710 is fixedly mounted on the rotating shaft 78. A side brake pad 712 is screwed onto the bottom side of the bent rod seat 710. Push plates 76 are symmetrically fixedly mounted on both sides of the valve plate 75. The upper side of the bent rod seat 710 abuts against the bottom of the push plate 76.

[0025] With the above configuration, when the linear motor 5 loses power, the cylinder 74 drives its output end to press down, which in turn pushes the valve plate 75 to press down quickly. This causes the push plate to drive the flat brake pad 711 to press against the upper side of the T-shaped linear track 2, forming a braking effect. At the same time, the push plates 76 on both sides of the valve plate 75 press down and rotate the bent rod seat 710, overcoming the return torque of the torque return spring 79. This, in turn, synchronously drives the side brake pad 712 on the inner side of the bent rod seat 710 to press against the inner side of the T-shaped linear track 2, interacting with the friction texture 3 on the inner side of the T-shaped linear track 2 to improve the braking effect. A combined braking method of pressure braking and side-mounted braking is adopted. The entire brake mechanism 7 can instantly lock the linear motor after power failure, and the locking is stable.

[0026] In this method, a T-shaped linear track 2 is symmetrically fixedly installed on the upper side of the stator track 1, and a permanent magnet drive track 4 is fixedly installed at the center line position on the upper side of the stator track 1. Friction textures 3 are evenly distributed on the inner wall of the T-shaped linear track 2, and the linear motor 5 is slidably engaged on the upper side of the T-shaped linear track 2.

[0027] With the above configuration, the permanent magnet drive track 4 and the electromagnetic coil in the linear motor 5 form a magnetic driving force, which in turn drives the linear motor 5 to slide linearly on the stator track 1. The linear motor 5 is a common electrical component and will not be described in detail here.

[0028] In this configuration, an indicator light 72 and an acceleration sensor 73 are fixedly mounted on the structural plate 71.

[0029] With the above settings, the acceleration sensor 73 can monitor the speed change of the linear motor 5 when it stops in real time. When the stopping time exceeds the control threshold preset in the controller 6, it indicates that the braking lock function has exceeded the limit. At this time, the indicator light 72 will light up, prompting the maintenance of the brake mechanism 7, such as replacing the brake pads or checking the working performance of the cylinder 74.

[0030] In this configuration, a controller 6 is fixedly mounted on the upper side of the linear motor 5, and a structural plate 71 is screwed onto the side wall of the linear motor 5.

[0031] With the above-described configuration, the entire brake mechanism 7 is installed on the side of the linear motor 5 via a screw connection, facilitating subsequent disassembly and maintenance.

[0032] In this method, both the flat brake pad 711 and the side brake pad 712 are made of ceramic material, and both the flat brake pad 711 and the side brake pad 712 have concave screw holes on their surfaces.

[0033] The above-described design, with its recessed threaded hole, facilitates the installation and replacement of the flat brake pad 711 or the side brake pad 712. Simultaneously, it ensures that the threaded connection point of the flat brake pad 711 or the side brake pad 712 is lower than its friction surface, thus not affecting its braking performance.

[0034] In this method, the torsion return spring 79 is made of durable stainless steel.

[0035] The above-described design improves the durability of the torque return spring 79.

[0036] The working principle of the linear motor power failure brake mechanism using a cylinder provided by this utility model is as follows:

[0037] When the linear motor 5 loses power, the controller 6 receives a signal and triggers the brake mechanism 7 to start. At this time, the output end of the cylinder 74 extends downward, pushing the valve plate 75 fixed thereto to move downward in sync. The flat brake pad 711, which is installed on the lower side of the valve plate 75 through the concave screw hole, presses down and directly contacts the upper side of the T-shaped linear track 2 on the stator track 1, initially forming axial braking. At the same time, the push plates 76 fixed on both sides of the valve plate 75 move downward with the valve plate 75, generating downward pressure on the upper side of the bent rod seat 710, which is installed on the lower extension plate 77 through the rotating shaft 78. This forces the bent rod seat 710 to rotate around the rotating shaft 78 and overcome the return force of the torque return spring 79. The side brake, which is installed on the bottom side of the bent rod seat 710 through the concave screw hole, is then activated. The plate 712 then moves closer to the inside of the T-shaped linear track 2, eventually making close contact with the friction texture 3 on the inner wall of the T-shaped linear track 2, forming a radial clamping brake. Through the combined action of the flat brake plate 711 and the side brake plate 712, the linear motor 5 is instantly locked on the T-shaped linear track 2, preventing it from moving due to inertia or gravity. During the braking process, the acceleration sensor 73 on the structural plate 71 monitors the speed change of the linear motor 5 in real time. If the braking rate exceeds the limit, the indicator light 72 will light up to indicate the fault, ensuring the safety of the mechanism operation.

[0038] When the linear motor 5 is powered on again, the controller 6 sends a reset signal, the output end of the cylinder 74 retracts upward, driving the valve plate 75 and the push plate 76 to move upward synchronously, and the pressure of the push plate 76 on the bending rod seat 710 disappears. At this time, the torque reset spring 79 releases its rebound force, driving the bending rod seat 710 to rotate in the opposite direction around the rotating shaft 78 to reset, and the side brake pad 712 separates from the friction texture 3 on the inner wall of the T-shaped linear track 2; at the same time, the valve plate 75 moves upward, causing the flat brake pad 711 to disengage from the upper side of the T-shaped linear track 2, the brake mechanism 7 returns to its initial state, and the linear motor 5 can slide normally along the T-shaped linear track 2 under the magnetic drive of the permanent magnet drive track 4.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A linear motor power failure brake mechanism utilizing a cylinder, characterized in that, It includes a stator track (1), a linear motor (5), and a brake mechanism (7); The brake mechanism (7) includes a structural plate (71), on which a cylinder (74) is fixedly installed. The output end of the cylinder (74) slides through to the bottom of the structural plate (71), and a valve plate (75) is fixedly installed on the output end of the cylinder (74). A flat brake pad (711) is screwed onto the lower side of the valve plate (75). A lower extension plate (77) is symmetrically fixedly connected to the lower side of the structural plate (71). A rotating shaft (78) is rotatably installed on the lower extension plate (77). A torque return spring (79) is sleeved on the outer wall of the rotating shaft (78). A bent rod seat (710) is fixedly installed on the rotating shaft (78). A side brake pad (712) is screwed onto the bottom side of the bent rod seat (710). Push plates (76) are symmetrically fixedly installed on both sides of the valve plate (75). The upper side of the bent rod seat (710) abuts against the bottom of the push plate (76).

2. The linear motor power failure brake mechanism utilizing a cylinder according to claim 1, characterized in that, An indicator light (72) and an acceleration sensor (73) are fixedly installed on the structural plate (71).

3. The linear motor power failure brake mechanism utilizing a cylinder according to claim 1, characterized in that, A controller (6) is fixedly installed on the upper side of the linear motor (5), and the structural plate (71) is screwed onto the side wall of the linear motor (5).

4. A linear motor power failure braking mechanism utilizing a cylinder according to claim 1, characterized in that, Both the flat brake pad (711) and the side brake pad (712) are made of ceramic material, and both the flat brake pad (711) and the side brake pad (712) have concave screw holes on their surfaces.

5. A linear motor power failure braking mechanism utilizing a cylinder according to claim 1, characterized in that, The torsion return spring (79) is made of durable stainless steel.

6. A linear motor power failure brake mechanism utilizing a cylinder according to claim 1, characterized in that, A T-shaped linear track (2) is symmetrically fixedly installed on the upper side of the stator track (1), and a permanent magnet drive track (4) is fixedly installed at the center line position on the upper side of the stator track (1).

7. A linear motor power failure brake mechanism utilizing a cylinder according to claim 6, characterized in that, Friction patterns (3) are evenly distributed on the inner wall of the T-shaped linear track (2).

8. A linear motor power failure brake mechanism utilizing a cylinder according to claim 1, characterized in that, The linear motor (5) is slidably engaged on the upper side of the T-shaped linear track (2).

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