Locking device of secondary torque brake
By designing a locking device for a secondary torque brake, the problem of brake torque drop caused by the adjustment nut spin is solved, and the safety and stability of the equipment are improved.
Patent Information
- Application Number
- CN202421626909.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The primary torque adjustment nut and secondary torque adjustment nut of the existing secondary torque brake are prone to rotate during frequent braking, resulting in a decrease in braking torque and posing a safety hazard.
A locking device is designed to prevent the nut from spinning by setting up a connecting plate, an adjustment sleeve and a fastening bolt, and the adjustment sleeve is used to sleeve outside the adjustment nut and fixed by the fastening nut.
It effectively prevents the adjustment nut from spinning during use, ensures the stability and safety of the braking torque, and improves the safety and stability of the secondary torque brake.
Smart Images
Figure CN222887124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of braking devices, and particularly relates to a locking device for a two-stage torque brake. Background Art
[0002] A brake is a mechanical device that stops or decelerates moving parts in a machine, and is a commonly used braking device in equipment manufacturing industries such as hoisting and conveying machinery, metallurgical equipment, mining equipment, construction engineering machinery, wind power and nuclear power equipment, ships and offshore heavy industry. Among them, a two-stage torque brake is a brake with two groups of braking spring assemblies arranged in parallel. By applying braking torque twice, smooth deceleration braking (the first braking is performed with a smaller braking torque) and reliable parking (anti-wind) braking (that is, the second braking is performed after the machine stops) can be achieved. Common two-stage torque brakes include YPL type electro-hydraulic disc brakes, etc.
[0003] The working principle of the two-stage torque brake is as follows: when the driving motor of the mechanism is powered off and stops driving, the pusher is also powered off simultaneously and loses its thrust. The primary braking spring force acts on the brake disc through the lever and the brake shoe to generate a primary braking torque, and the first step of braking is performed on the mechanism. The secondary braking spring slowly moves down and releases under the resistance of the one-way hydraulic damping cylinder. After the mechanism completely stops, the secondary braking spring is released in place and applies the spring force to the brake disc to generate a secondary braking torque, implementing parking (anti-wind) braking; when the mechanism is powered on and driven, the pusher is powered on and driven simultaneously and quickly generates enough thrust to push up the push rod (at this time, the one-way hydraulic damping cylinder has no damping effect), causing the brake arm to expand outward on both sides, and the braking covering surface of the brake shoe disengages from the brake disc, stopping the braking effect. The brake can be equipped with an emergency braking short-circuit solenoid valve as needed. When encountering sudden strong winds or other emergencies, the solenoid valve is powered on to short-circuit the damping cylinder, realizing the undamped release of the secondary braking spring and performing rapid emergency braking.
[0004] There are two groups of brake torque adjustment nuts (referred to as adjustment nuts) with the same specifications arranged in parallel on the existing two-stage torque brake, namely the primary torque adjustment nut and the secondary brake torque adjustment nut. The brake torque adjustment nut is a hexagonal nut. During use, the primary brake torque is adjusted by adjusting the primary torque adjustment nut, and the secondary brake torque is adjusted by adjusting the secondary brake torque adjustment nut. However, when the machine equipped with the brake is in use, it often needs to be braked frequently. During the frequent braking process, the primary torque adjustment nut and the secondary brake torque adjustment nut are prone to rotate under the action of the braking spring, resulting in a decrease in the primary braking torque and the secondary braking torque, failing to meet the braking requirements, and thus generating a risk of brake failure and potential safety hazards. Content of the Utility Model
[0005] In view of the problem that the primary torque adjusting nut and the secondary torque adjusting nut of the existing secondary torque brake are prone to rotate during use, resulting in a decrease in the primary braking torque and the secondary braking torque, and there are potential safety hazards, the present utility model provides a locking device for a secondary torque brake, which can lock the primary braking torque adjusting nut and the secondary braking torque adjusting nut, and can avoid the rotation of the primary torque adjusting nut and the secondary torque adjusting nut during the use of the secondary torque brake, resulting in a decrease in the primary braking torque and the secondary braking torque and potential safety hazards, and can improve the safety and stability of the secondary torque brake; the device has a simple structure, is convenient for disassembly and assembly, and has strong practicability and convenience.
[0006] The technical solution of the present utility model is as follows:
[0007] A locking device for a secondary torque brake includes a connecting plate with connecting holes provided at both ends. The screw rod of the fastening bolt sequentially passes through one end of the adjusting sleeve and the connecting hole, and is threadedly connected with the fastening nut; the two adjusting sleeves are located on the same side of the connecting plate. The adjusting sleeve is a hollow structure, and a hexagonal hole is opened at the end of the adjusting sleeve away from the connecting plate. The specification of the hexagonal hole corresponds to the specification of the adjusting nut of the secondary torque brake.
[0008] Wherein, the adjusting sleeve is used to sleeve outside the braking torque adjusting nut, and rotating the adjusting sleeve can drive the braking torque adjusting nut to rotate.
[0009] Further, the connecting plate is a stainless steel plate.
[0010] Further, the material of the adjusting sleeve is stainless steel.
[0011] Further, it further includes a lock washer. The screw rod of each fastening bolt sequentially passes through one end of the adjusting sleeve, the connecting hole, and the lock washer, and then is threadedly connected with the fastening nut. The setting of the lock washer can prevent the relative sliding and loosening between the fastening bolt and the connecting hole after the fastening bolt is tightened, and improve the stability of the locking device.
[0012] Further, a through hole is opened at the end of the adjusting sleeve connected to the connecting plate, and a thread adapted to the screw rod of the fastening bolt is provided in the through hole.
[0013] Further, the head of the fastening bolt is welded and fixed to the inner side of the end of the adjusting sleeve connected to the connecting plate.
[0014] Further, a retaining block with a diameter larger than the screw rod of the fastening bolt is welded to the top of the screw rod of each fastening bolt passing through the connecting hole.
[0015] The beneficial effects of the present utility model are as follows:
[0016] 1. The locking device of the secondary torque brake provided by the utility model is provided with a connecting plate, which cooperates with fastening bolts and fastening nuts to connect two adjusting sleeves. During use, the two adjusting sleeves can be respectively sleeved outside the primary braking torque adjusting nut and the secondary braking torque adjusting nut, and then the fastening nuts are tightened so that the two adjusting sleeves cannot rotate, thereby realizing the locking of the primary braking torque adjusting nut and the secondary braking torque adjusting nut. After the primary braking torque adjusting nut and the secondary braking torque adjusting nut are locked, they cannot rotate by themselves, which can avoid the rotation of the primary torque adjusting nut and the secondary torque adjusting nut during the use of the secondary torque brake, resulting in a decrease in the primary braking torque and the secondary braking torque and potential safety hazards, and can improve the safety and stability of the secondary torque brake.
[0017] 2. The utility model uses two adjusting sleeves to be respectively sleeved outside the primary torque adjusting nut and the secondary torque adjusting nut, and can also form good fixation and locking for the two adjusting nuts when there is a height difference due to different tightness of the two adjusting nuts; the structure of the locking device is simple, easy to disassemble and assemble, and has strong practicability and convenience. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a schematic structural diagram of the locking device of the secondary torque brake in Embodiment 1 from one angle.
[0020] Figure 2 It is a schematic structural diagram of the locking device of the secondary torque brake in Embodiment 1 from another angle.
[0021] In the figure, 1 - connecting plate, 2 - adjusting sleeve, 3 - fastening bolt, 4 - fastening nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0023] Embodiment 1
[0024] AsFigure 1 - Figure 2 As shown in the figure, a locking device for a two-stage torque brake includes a connecting plate 1 with connecting holes provided at both ends. The connecting plate 1 is a stainless steel plate, and the distance between the centers of the two connecting holes is equal to the distance between the axes of the two braking torque adjusting nuts of the brake.
[0025] The screw rod of the fastening bolt 3 sequentially passes through one end of the adjusting sleeve 2, the connecting hole, and the lock washer, and then is threadedly connected to the fastening nut 4. The adjusting sleeve 2 is made of stainless steel. The two adjusting sleeves 2 are located on the same side of the connecting plate 1. The adjusting sleeve 2 is a hollow structure. One end of the adjusting sleeve 2 away from the connecting plate 1 is provided with a hexagonal hole, and the specification of the hexagonal hole corresponds to the specification of the adjusting nut of the two-stage torque brake.
[0026] The application principle of Embodiment 1 is as follows:
[0027] (1) During use, loosen the two fastening nuts 4 so that the two adjusting sleeves 2 can rotate freely, and then respectively put the two adjusting sleeves 2 on the primary braking torque adjusting nut and the secondary braking torque adjusting nut of the two-stage torque brake.
[0028] (2) Rotate the two adjusting sleeves 2 to drive the primary braking torque adjusting nut and the secondary braking torque adjusting nut to rotate respectively until the primary braking torque and the secondary braking torque are adjusted to the required parameters.
[0029] (3) Tighten the two fastening nuts 4 so that the two adjusting sleeves 2 cannot rotate, and complete the locking of the primary braking torque adjusting nut and the secondary braking torque adjusting nut.
[0030] Embodiment 2
[0031] A locking device for a two-stage torque brake. On the basis of Embodiment 1, a through hole is provided at one end of the adjusting sleeve 2 connected to the connecting plate 1, and a thread adapted to the screw rod of the fastening bolt 3 is provided in the through hole.
[0032] Embodiment 3
[0033] A locking device for a two-stage torque brake. On the basis of Embodiment 1, the head of the fastening bolt 3 is welded and fixed to the inner side of one end of the adjusting sleeve connected to the connecting plate, and a locking block with a diameter larger than the screw rod of the fastening bolt 3 is welded to the top of the screw rod of each fastening bolt 3 passing through the connecting hole.
[0034] Although the present utility model has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present utility model is not limited thereto. Without departing from the spirit and essence of the present utility model, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present utility model, and all such modifications or substitutions should fall within the scope of the present utility model / Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all should be covered within the protection scope of the present utility model.
Claims
1. A locking device for a secondary torque brake, comprising a connecting plate with connecting holes at both ends, characterized in that: The screw of the fastening bolt passes through one end of the adjusting sleeve and the connecting hole in turn, and is threadedly connected to the fastening nut; the two adjusting sleeves are located on the same side of the connecting plate, the adjusting sleeve is a hollow structure, and a hexagonal hole is opened at the end of the adjusting sleeve away from the connecting plate. The specifications of the hexagonal hole correspond to the specifications of the adjusting nut of the secondary torque brake.
2. The locking device according to claim 1, characterized in that: The connecting plate is made of stainless steel.
3. The locking device according to claim 1, characterized in that: The adjusting sleeve is made of stainless steel.
4. The locking device according to claim 1, characterized in that: It also includes an anti-loosening washer. The screw rod of each fastening bolt passes through one end of the adjusting sleeve, the connecting hole, and the anti-loosening washer in sequence, and then is threadedly connected with the fastening nut.
5. The locking device according to claim 1, characterized in that: A through hole is provided on one end of the adjusting sleeve connected to the connecting plate, and a thread matching the screw rod of the fastening bolt is arranged in the through hole.
6. The locking device according to claim 1, characterized in that: The head of the fastening bolt is welded and fixed to the inner side of one end of the adjusting sleeve connected with the connecting plate.
7. The locking device according to claim 1, characterized in that: An anti-dropping block with a diameter larger than that of the screw rod of each fastening bolt is welded on the top end of the screw rod of each fastening bolt passing through the connecting hole.