Simple manual brake

Abstract

The utility model discloses a simple manual brake, belongs to the technical field of brake devices, and provides a simple manual brake for braking the tail end of a winch, the simple manual brake comprises a mounting seat, a pair of brake bands are connected to the mounting seat, and each brake band is movably connected with the same operating rod through a traction pin shaft; the operating rod comprises a left-handed screw rod and a right-handed screw rod which are integrated, the left-handed screw rod and the right-handed screw rod are coaxial, the traction pin shaft comprises follow-up nuts, the two follow-up nuts are provided with inner screw holes and are in threaded fit with the left-handed screw rod and the right-handed screw rod respectively, and a hand wheel is arranged at the end of one of the left-handed screw rod and the right-handed screw rod. A screw rod structure with half left-handed threads and half right-handed threads is arranged on the operating rod, the brake band can be held tightly or separated at the same time by rotating the hand wheel, and a spiral transmission mode is adopted, so that manual operation is labor-saving, and the brake device is simple in design structure, easy to machine and manufacture, good in structural stability and timely in brake force supply.

Description

Technical Field

[0001] The present application relates to the technical field of brake devices, and in particular to a simple manual brake. Background Art

[0002] Traditional winches are generally equipped with brakes at the output shaft end of the motor. The opening and closing of the brakes are controlled by the shuttle valve inside the valve block. When the winch stops, the brakes are automatically applied. Since the above braking method is applied at the high-speed end of the transmission mechanism, there is a gap between the transmission mechanisms. From the motor end to the drum output end, even after the motor side brake is applied, the drum will rotate slightly under the drive of external force. On offshore working platforms or other occasions with bumps and vibrations, the cable may shake or even damage the gears. Therefore, it is necessary to install a brake mechanism at the output end of the actuator, that is, the drum side.

[0003] The existing winch belt brake generally adopts a relatively complex connecting rod and lever mechanism, which has a complex mechanism and high cost. In addition, due to the lever mechanism, the required operation time is long. Summary of the invention

[0004] The purpose of the present application is to provide a simple manual brake for end braking of a winch.

[0005] To achieve the above objectives, the present application provides a simple manual brake: it includes a mounting seat, a pair of brake bands are connected to the mounting seat, each of the brake bands is movably connected to the same joystick through a traction pin, the joystick includes an integrated left-hand screw and a right-hand screw, the left-hand screw is coaxial with the right-hand screw, the traction pin includes a follower nut, the two follower nuts are both provided with internal threaded holes, which are respectively matched with the left-hand screw and the right-hand screw threads, and a handwheel is provided at the end of one of the left-hand screw or the right-hand screw, so that braking and releasing are achieved manually.

[0006] Preferably, the brake band includes an arc-shaped pressure plate, the inner wall of which is fixedly connected with a friction pad, the outer side surface of the lower end of the pressure plate has a first hinge plate suitable for rotationally connecting with the mounting seat, and the outer side surface of the upper end of the pressure plate has a second hinge plate suitable for connecting with the traction pin shaft to form a hinged structure at the upper end of the brake band.

[0007] Preferably, the mounting base comprises a base plate, an upper surface of which is fixedly connected with an articulated frame, and the articulated frame is rotatably connected to the first articulated plate via a limiting pin shaft, serving as an articulated structure at the lower end of the brake belt.

[0008] Preferably, the outer side surface of the follower nut has an end shaft, which is suitable for being inserted into the second hinge plate to form a rotating pair, thereby ensuring the freedom of movement of the traction pin relative to the brake belt.

[0009] Preferably, a pin hole is provided at the portion where the end shaft passes through the second hinge plate, suitable for a hairpin pin to pass through, and a through structure is also provided at the portion where the limit pin shaft passes through the first hinge plate, so as to ensure the stability of the limit pin shaft.

[0010] As a preferred embodiment, there is an optical axis between the left-handed screw and the right-handed screw, the handwheel is located at the end of the left-handed screw away from the optical axis, and a limit member is provided at the end of the right-handed screw away from the optical axis to prevent the screw and the follower nut from disengaging when disassembly is not required.

[0011] Preferably, the upper surface of the base plate is also fixedly connected to a support frame, a fixing nut is provided at the upper end of the support frame, and a gap adjustment rod is connected to the inner thread of the fixing nut, which is suitable for applying pressure to the outer side surface of the pressure plate, thereby changing the distance between the brake band and the outer side surface of the braked shaft.

[0012] Preferably, the gap adjustment rod includes a screw rod, an end of the screw rod away from the brake band has an end cap, the fixing nut is fixedly connected to the side of the support frame, and the upper end of the support frame is provided with a through hole connected to the interior of the fixing nut, suitable for the screw rod to pass through, so that the gap adjustment mechanism will be more stable.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] (1) By setting a screw structure with half of the threads being left-handed and half being right-handed on the operating rod, the brake belt can be tightened or separated at the same time by rotating the hand wheel, and the screw transmission method is adopted, so manual operation is effortless. Therefore, the design has a simple structure, is easy to manufacture, has good structural stability, and provides timely braking force.

[0015] (2) By providing a gap adjustment mechanism outside the brake band, when the brake band is obviously worn out after long-term use, the excess gap can be compensated by squeezing the pressure plate to deform it, thereby reducing the change in the rotation angle of the joystick during braking and releasing, so that the hand feel of the manual brake remains roughly the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the general assembly structure plan of the simple manual brake;

[0017] Figure 2 A front view of the brake band of the simple manual brake;

[0018] Figure 3 A plan view of the operating lever of the simple manual brake;

[0019] Figure 4It is a side view of the traction pin shaft of the simple manual brake;

[0020] Figure 5 It is a front view of the mounting base of the simple manual brake.

[0021] In the figure: 1. joystick; 101. left-hand screw; 102. right-hand screw; 103. handwheel; 104. limiter; 105. optical axis; 2. brake belt; 201. pressure plate; 202. friction pad; 203. first hinge plate; 204. second hinge plate; 3. traction pin; 301. follower nut; 302. inner screw hole; 303. end shaft; 304. pin hole; 4. clearance adjustment rod; 401. screw; 403. end cap; 5. mounting seat; 501. base plate; 502. articulated frame; 503. support frame; 504. through hole; 505. fixing nut; 6. limiter pin. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] like Figure 1-5The simple manual brake shown in the figure comprises a fixed mounting seat 5, a pair of brake bands 2 are connected to the mounting seat 5, the two brake bands 2 are symmetrical in structure and are mirror images of each other in the same plane, and the specific structure of the brake bands 2 comprises an arc-shaped pressure plate 201, which is easier to fit with the outer side of the braked shaft, and the pressure plate 201 is generally made of an alloy material with good toughness, which can not only maintain its own shape, but also deform within a certain range, and the inner wall of the pressure plate 201 is fixedly connected with a friction pad 202, and the friction pad 202 is made of a wear-resistant material with a high surface friction coefficient, which belongs to the brake pad material. The content in the technical field is mature existing technology, and examples are not elaborated here. The outer side surface of the lower end of the pressure plate 201 has a first hinge plate 203, which is used to be rotatably connected to the mounting seat 5. The specific structure of the mounting seat 5 includes a base plate 501, and the upper surface of the base plate 501 is fixedly connected to a hinge frame 502. The hinge frame 502 is rotatably connected to the first hinge plate 203 through a limit pin 6. The portion where the limit pin 6 passes through the first hinge plate 203 is also provided with a through structure for a hairpin pin to pass through. The hairpin pin can effectively suppress the movement of the limit pin 6 along the axis, thereby ensuring the connection stability of the rotating structure, or the hinge structure.

[0027] Each brake belt 2 is movably connected to the same operating lever 1 through a traction pin 3. The outer side surface of the upper end of the pressure plate 201 has a second hinge plate 204 for connecting with the traction pin 3. The specific structure of the traction pin 3 includes a follower nut 301. The outer side surface of the follower nut 301 has an end shaft 303. It is the end shaft 303 and the second hinge plate 204 that are inserted into each other to form a rotating pair. The part where the end shaft 303 passes through the second hinge plate 204 is provided with a pin hole 304, which is also used for the hairpin pin to pass through, thereby limiting the end shaft 303 and preventing it from moving.

[0028] The joystick 1 includes an integrated left-handed screw rod 101 and a right-handed screw rod 102. The outer side surface of the left-handed screw rod 101 has a left-handed thread, and the outer side surface of the right-handed screw rod 102 has a right-handed thread. There is an optical axis 105 between the left-handed screw rod 101 and the right-handed screw rod 102, which is a transition portion between the left-handed screw rod 101 and the right-handed screw rod 102, which can avoid the left-handed thread and the right-handed thread being too close to the ground and inconvenient to process. The axes of the left-handed screw rod 101 and the right-handed screw rod 102 are both colinear with the axis of the optical axis 105, that is, the three are coaxial. Two follower nuts 301 are both provided with internal threaded holes 302, which are respectively threadedly matched with the left-handed screw rod 101 and the right-handed screw rod 102. The internal threaded hole 302 opened by the follower nut 301 matched with the left-handed screw rod 101 is naturally left-handed, and the internal threaded hole 302 opened by the follower nut 301 matched with the right-handed screw rod 102 is naturally right-handed.

[0029] A handwheel 103 is provided at one of the ends of the left-handed screw rod 101 or the right-handed screw rod 102. In the present embodiment, the handwheel 103 is located at the end of the left-handed screw rod 101 away from the optical axis 105, and a limiting member 104 is also provided at the end of the right-handed screw rod 102 away from the optical axis 105. The limiting member 104 is generally also a detachable nut structure, which is used to prevent the screw rod from being detached from the follower nut 301. Similarly, the larger handwheel 103 also has a limiting function to prevent it from being detached.

[0030] The upper surface of the bottom plate 501 is also fixedly connected to a support frame 503, and a fixing nut 505 is provided on the upper end of the support frame 503. The fixing nut 505 is internally threadedly connected to a clearance adjustment rod 4. The clearance adjustment rod 4 can apply pressure to the outer side of the pressure plate 201, thereby changing the distance between the inner wall of the brake band 2 and the outer side of the braked shaft. It is mainly used for compensatory adjustment after the friction pad 202 is worn. The specific structure of the clearance adjustment rod 4 includes a screw 401. The end of the screw 401 away from the brake band 2 has an end cap 403, and the end cap 403 can be matched with a hexagonal wrench. The position of the end of the screw 401 can be adjusted by rotating the end cap 403. Because the technical screw 401 is actually One end of the opposing brake band 2 will contact the pressure plate 201. The position of the end of the screw 401 changes, which can change the stress state of the pressure plate 201, thereby possibly changing the shape of the pressure plate 201. In this embodiment, the fixing nut 505 is fixedly connected to the side of the support frame 503. Therefore, it is necessary to open a through hole 504 connected to the interior of the fixing nut 505 near the upper end of the support frame 503 for the screw 401 to pass through. In this way, the force on the fixing nut 505 will be more balanced, and the end face welding is less likely to fall off than the side face welding. Under normal circumstances, there are two gap adjustment mechanisms formed by the gap adjustment rod 4 and the fixing nut 505, which adjust the two brake bands 2 respectively.

[0031] Working principle: The brake consists of a pair of symmetrical brake bands 2 and a joystick 1. The joystick 1 has a lead screw with a left-handed thread and a lead screw with a right-handed thread. By rotating the handle on the joystick 1, the two brake bands 2 can be moved closer to or away from each other, and the brake bands 2 can be tightened or loosened.

[0032] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A simple manual brake, characterized by: The invention comprises a mounting seat (5), a pair of brake bands (2) are connected to the mounting seat (5), each of the brake bands (2) is movably connected to the same operating lever (1) via a traction pin (3), the operating lever (1) comprises an integral left-hand screw (101) and a right-hand screw (102), the left-hand screw (101) and the right-hand screw (102) are coaxial, the traction pin (3) comprises a follower nut (301), both of the two follower nuts (301) are provided with an inner screw hole (302), which is respectively threadedly matched with the left-hand screw (101) and the right-hand screw (102), and a hand wheel (103) is arranged at the end of one of the left-hand screw (101) or the right-hand screw (102).

2. The simple manual brake according to claim 1, characterized in that: The brake belt (2) includes an arc-shaped pressure plate (201), the inner wall of which is fixedly connected to a friction pad (202), the lower outer side surface of the pressure plate (201) having a first hinge plate (203) suitable for being rotatably connected to the mounting seat (5), and the upper outer side surface of the pressure plate (201) having a second hinge plate (204) suitable for being connected to the traction pin shaft (3).

3. The simple manual brake according to claim 2, characterized in that: The mounting seat (5) comprises a base plate (501), the upper surface of which is fixedly connected with a hinge frame (502), and the hinge frame (502) is rotatably connected to the first hinge plate (203) via a limiting pin shaft (6).

4. The simple manual brake according to claim 3, characterized in that: The outer side surface of the follower nut (301) has an end shaft (303) suitable for being inserted into the second hinge plate (204) to form a rotating pair.

5. The simple manual brake according to claim 4, characterized in that: The portion where the end shaft (303) passes through the second hinge plate (204) is provided with a pin hole (304) suitable for a hairpin pin to pass through, and the portion where the limit pin shaft (6) passes through the first hinge plate (203) is also provided with a through structure for a hairpin pin to pass through.

6. The simple manual brake according to any one of claims 1 to 5, characterized in that: An optical axis (105) is provided between the left-hand screw (101) and the right-hand screw (102); the hand wheel (103) is located at the end of the left-hand screw (101) away from the optical axis (105); and a limiting member (104) is provided at the end of the right-hand screw (102) away from the optical axis (105).

7. The simple manual brake according to any one of claims 3 to 5, characterized in that: The upper surface of the base plate (501) is also fixedly connected to a support frame (503), and the upper end of the support frame (503) is provided with a fixing nut (505). The fixing nut (505) is internally threadedly connected to a gap adjustment rod (4) suitable for applying pressure to the outer side surface of the pressure plate (201).

8. The simple manual brake according to claim 7, characterized in that: The clearance adjustment rod (4) comprises a screw rod (401), the end of the screw rod (401) away from the brake band (2) has an end cap (403), the fixing nut (505) is fixedly connected to the side of the support frame (503), and the upper end of the support frame (503) is provided with a through hole (504) connected to the inside of the fixing nut (505) and suitable for the screw rod (401) to pass through.

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