Improved emergency brake hand wheel

Abstract

The utility model discloses an improved emergency brake hand wheel which comprises a wheel hub arranged on a driven shaft, supporting rods are arranged on the periphery of the wheel hub, the supporting rods are evenly distributed on the periphery of the wheel hub, a hand wheel ring is fixedly arranged at the other ends of the supporting rods, the hand wheel ring and the wheel hub are coaxially arranged, and the improved emergency brake hand wheel further comprises an adjustable lengthened force arm structure which is telescopically adjusted in the radial direction. The improved emergency brake hand wheel is a brake part of marine deck machinery, the structure of an old-fashioned brake hand wheel is improved, the built-in shaft is additionally arranged in the hand wheel, under the condition that normal use of a brake is not affected, brake force is increased, and the improved emergency brake hand wheel is suitable for all manual brakes of the general type. The improved brake hand wheel has the advantages that when an anchor chain cannot be braked, the improved brake hand wheel is used, the brake torque is increased by increasing a force arm, the safety during operation is greatly improved, and meanwhile possible property loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of marine equipment, and particularly relates to an improved emergency brake handwheel. Background Art

[0002] The manual brake equipment on the ship deck is an important safety device, which is used to fix the position of the ship during docking, mooring or cargo handling operations, and prevent displacement or collision due to external forces.

[0003] Marine deck machinery is a series of mechanical equipment installed on the open deck of a ship. These equipment are crucial for ensuring the normal navigation, docking at the dock, loading and unloading of goods, and boarding and alighting of passengers of the ship. Marine deck machinery can be divided into large deck machinery and small deck machinery according to its function and size. Among them, the manual brake equipment belongs to a part of the deck machinery, and mainly realizes the fixation and braking of the ship or goods through manual operation.

[0004] The handwheel form is adopted for the manual brake on the traditional deck machinery. Application No.: CN202023191475.3, a brake handwheel assembly for a marine anchor windlass, discloses a brake handwheel assembly for a marine anchor windlass, including a handwheel assembly device, a connection structure and a force-bearing plate. A handwheel structure is installed on the upper side of the handwheel assembly device, a force-bearing rod is installed on the left side of the handwheel structure, and a retaining ball is arranged at the left end of the force-bearing rod. A left fixing piece is fixedly connected inside the force-bearing plate, the end of the left fixing piece is fixedly connected with a fixing plate, and the end of the fixing plate is fixedly connected with a right fixing piece. A limiting hole is opened inside the retaining ball, and a screwing hole is opened on the right side of the limiting hole. For this brake handwheel assembly of the marine anchor windlass, the settings of the left reinforcing plate and the right reinforcing plate can ensure the connection strength between the working rod and the force-bearing plate, and avoid the fracture at the connection between the working rod and the force-bearing plate. Hold the two groups of relatively arranged working rods with the left hand and the right hand respectively, which is convenient for rotating the handwheel structure, saving time and effort.

[0005] The diameter of the handwheel in its structure is fixed, so the braking torque that can be provided is also limited. The sea conditions are complex and changeable. In the face of some situations that require a large braking force, at this time, the original handwheel diameter is fixed, so its braking torque is not enough to brake the anchor chain or cable. In view of the above, it is necessary to propose an improved emergency brake handwheel to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to overcome the defects existing in the prior art, solve the situation where the braking torque is limited, and thus provide an improved emergency brake handwheel.

[0007] To achieve the above object, the technical solution of the present utility model is as follows: An improved emergency brake handwheel, which includes a hub disposed on a driven shaft. Around the hub, there are support rods evenly distributed around the hub. At the other end of each support rod, a handwheel ring is fixedly provided. The handwheel ring is coaxially arranged with the hub, and further includes an adjustable lengthening force arm structure that can be adjusted in radial expansion and contraction.

[0008] Further, at least one group of the lengthening force arm structures is provided, which is based on the support rod and is adjusted in axial expansion and contraction along the support rod. It includes a sleeve and an inner shaft. The sleeve is a hollow cylinder with an opening at the outer end pointing outwards. One end of the inner shaft is inserted into the sleeve through the opening and is slidably connected thereto.

[0009] Further, the end of the inner shaft connected to the hub is the center end. The inner wall of the sleeve at the center end is provided with an inner ring groove. The inner ring groove is provided with a side wall track along the axial direction towards the opening end. The inserted end of the inner shaft is provided with a sliding key, and the sliding key is placed in the inner ring groove or the side wall track to limit the rotation or axial extension length of the inner shaft.

[0010] Further, an insertion track is provided along the axial direction between the center end and the opening end. The sliding key slides into the inner ring groove from the insertion track for the installation of the inner shaft.

[0011] Further, a positioning ear portion is provided at the outer end of the inner shaft. The handwheel ring is provided with a step groove that cooperates with the positioning ear portion. The positioning ear portion is provided with a first pin hole, and the step groove is provided with a second pin hole corresponding to the position of the first pin hole. A stop pin is inserted into the two pin holes.

[0012] Further, a positioning side groove is connected to the side of the side wall track. An elastic pin is provided on the side wall of the sleeve. A clamping groove that cooperates with the elastic pin is provided on the inner shaft. When the inner shaft moves into the positioning side groove, the clamping groove is buckled with the elastic pin for positioning.

[0013] Further, the lengthening force arm structures are arranged on each of the support rods and move outwards or contract simultaneously in the radial direction.

[0014] Further, each of the support rods is a sleeve structure. An inner shaft is slidably arranged inside the sleeve. A long strip-shaped through hole is provided on one side of the sleeve. An articulated ear portion that extends out from the through hole is provided at the end of the inner shaft. A collar portion is slidably arranged on the driven shaft. A connecting rod is connected between the outer wall of the collar portion and each articulated ear portion. Both ends of the connecting rod are articulated with the collar portion and the articulated ear portion respectively. A spring is wound around the driven shaft, and the spring is located between the hub and the collar portion.

[0015] Further, a positioning groove is provided on the inner wall of the collar portion, and an elastic clamping member cooperating with the positioning groove is provided on the drive shaft. The elastic clamping member has a right-angled triangular clamping end, and the clamping end cooperates with the positioning groove to position the collar portion. An unlocking portion is also provided on the drive shaft. The unlocking portion is connected to the elastic clamping member and pulls it to contract, so that the clamping end contracts and disengages from the positioning groove, unlocking the collar portion.

[0016] Further, an automatic centrifugal unlocking device is further included, which includes a weight, a traction wire, and a guide rail. The guide rail is arranged along the radial direction of the handwheel rim. The weight is slidably arranged on the guide rail. The weight and the elastic clamping member are connected by the traction wire. Magnets attracting each other are respectively provided on the weight and the guide rail, and the magnets position the weight at the starting position.

[0017] The advantages and beneficial effects of the present utility model are as follows: The improved emergency brake handwheel of the present utility model is the braking part of marine deck machinery. By improving the structure of the old-fashioned brake handwheel and adding a built-in shaft inside the handwheel, without affecting the normal use of the brake, the braking force is increased, and it is applicable to general types of manual brakes. Its advantage is that when the anchor chain cannot be braked, the improved brake handwheel is used to increase the braking torque by increasing the force arm, greatly increasing the safety during operation and avoiding possible property losses at the same time. Description of the Drawings

[0018] Figure 1 is the axonometric view of an improved emergency brake handwheel of the present utility model;

[0019] Figure 2 is the exploded view of an improved emergency brake handwheel of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the lengthened force arm structure in the present utility model;

[0021] Figure 4 is the cross-sectional view of the lengthened force arm structure in the present utility model;

[0022] Figure 5 is the axonometric Figure 1 ;

[0023] Figure 6 is the axonometric Figure 2 ;

[0024] Figure 7 is the structural schematic diagram of the automatic centrifugal unlocking device in the present utility model;

[0025] In the figure: 1, drive shaft; 2, hub; 3, support rod; 4, handwheel rim; 5, extendable force arm structure; 6, sleeve; 7, inner shaft; 8, opening; 9, inner ring groove; 10, side wall track; 11, sliding key; 12, insertion track; 13, positioning ear; 14, step groove; 15, first pin hole; 16, second pin hole; 17, stop pin; 18, positioning side groove; 19, elastic pin; 20, card slot; 21, through hole; 22, hinged ear; 23, collar part; 24, connecting rod; 25, spring; 26, positioning groove; 27, elastic clamping member; 28, clamping end; 30, flyweight; 31, traction line; 32, guide rail; 33, magnet; 34, radial chamber; 35, accommodation chamber; 36, channel. Detailed implementation manners

[0026] The following combines the accompanying drawings and embodiments to further describe the detailed implementation manners of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model. Embodiment 1:

[0027] An improved emergency brake handwheel, as Figure 1 , 4 shown, includes a hub 2 provided on a driven shaft 1. The hub 2 is located at the center of the handwheel and is fixedly installed on the drive shaft 1 through the hub 2. During use, the drive shaft 1 is rotated by turning the handwheel, which is similar to the existing handwheel structure. Around the hub 2, there are support rods 3. The support rods 3 are evenly distributed around the hub 2. The other end of the support rod 3 is fixedly provided with a handwheel rim 4. The handwheel rim 4 is coaxially arranged with the hub 2. As an improvement, as Figure 1 , 2 shown, it also includes an adjustable extendable force arm structure 5 that adjusts in the radial direction. During actual use, when it is necessary to increase the torque, the extendable force arm structure 5 can be adjusted.

[0028] Specifically, at least one group of the extendable force arm structures 5 is provided. It can be understood that multiple extendable force arm structures 5 can be provided. In this embodiment, one group is taken as an example. As Figure 2 shown, it is based on the support rod 3 and adjusts axially along the support rod 3, and includes a sleeve 6 and an inner shaft 7. The sleeve 6 is a hollow cylinder, and the end pointing to the outside is an opening 8. One end of the inner shaft 7 is inserted into the sleeve 6 through the opening 8 and is slidably connected thereto. At the position where the extendable force arm structure 5 is provided, the support rod 3 is replaced with a sleeve 6. The end of the sleeve 6 has an opening 8, so that the inner shaft 7 can be inserted and its position can be slidably adjusted; during use, the inner shaft 7 is pulled out to extend the force arm and thus increase the torque. When it is necessary to increase the braking force of the equipment on the deck, when using the extendable force arm structure 5, it can save the operator's effort.

[0029] Further, one end of the built-in shaft 7 connected to the hub 2 is the center end. The inner wall of the sleeve 6 at the center end is provided with an inner ring groove 9. Further, an insertion track 12 is axially provided between the center end and the opening 8 end. The sliding key 11 is slid into the inner ring groove 9 from the insertion track 12 for the installation of the built-in shaft 7. The insertion end of the built-in shaft 7 is provided with a sliding key 11. As Figure 2 , 3 shown, during installation, from the opening 8 end, align the sliding key 11 with the port of the insertion track 12 and insert it into the inside of the sleeve 6, and finally enter the inner ring groove 9. The width of the inner ring groove 9 is adapted to the sliding key 11, so that the built-in shaft 7 can rotate within the sleeve 6, and the inner ring groove 9 limits its position. As Figure 3 shown, a side wall track 10 is axially provided in the inner ring groove 9 towards the opening 8 end. One end of the side wall track 10 facing the opening 8 is a blind end, so that it can cooperate with the sliding key 11 to limit the pulling length of the built-in shaft 7. During use, rotate a certain angle so that the sliding key 11 can slide into the side wall track 10, and then the end of the built-in shaft 7 can be pulled and pulled out to achieve the effect of increasing the force arm. Therefore, through the cooperation of the inner ring groove 9 or the side wall track 10 and the sliding key 11, the rotation or axial extension length of the built-in shaft 7 can be limited.

[0030] The above method can increase the length of the force arm, but the pulling-out length of the built-in shaft 7 is not fixed, so it is easy to slide back during use. As an improvement, it is necessary to fix the position of the pulled-out built-in shaft 7. Specifically, as Figure 3 , 4 shown, a positioning side groove 18 is connected to the side of the side wall track 10. In Figure 3 , the positioning side groove 18 is located on one side of the end of the side wall track 10, so that when the sliding key 11 slides to this position, the built-in shaft 7 can be rotated to make the sliding key 11 rotate into the positioning side groove 18 to realize the position positioning of the built-in shaft 7. To prevent the built-in shaft 7 from rotating during use and the sliding key 11 from sliding out of the positioning side groove 18, in this embodiment, an elastic pin 19 is provided on the side wall of the sleeve 6. As Figure 4 shown, the built-in shaft 7 is provided with a card slot 20 that cooperates with the elastic pin 19. The side wall of the sleeve 6 is provided with a radial chamber 34, so that the elastic pin 19 can slide radially within the radial chamber 34, and a spring 25 is provided in the radial chamber 34. The spring 25 provides elasticity for the elastic pin 19 to control its pin end to enter the card slot 20. It can be understood that when the built-in shaft 7 moves into the positioning side groove 18, the card slot 20 is engaged and positioned with the elastic pin 19. The other end of the elastic pin 19 extends out of the radial chamber 34, and the elastic pin 19 can be pulled away from the card slot 20 through this end for manual unlocking.

[0031] As Figures 1-3As shown, a positioning ear 13 is provided at the outer end of the built-in shaft 7, and a step groove 14 matching the positioning ear 13 is provided on the handwheel ring 4. When the built-in shaft 7 rotates, the positioning ear 13 can be snapped into the step groove 14 to form a storage state. And, as Figure 2 shown, the positioning ear 13 is provided with a first pin hole 15, and the step groove 14 is provided with a second pin hole 16 corresponding to the position of the first pin hole 15. A stop pin 17 is inserted into the two pin holes. When the built-in shaft 7 is not in use, the stop pin 17 is inserted into the two pin holes to fix the built-in shaft 7, and the stop pin 17 can be pulled out before use. Embodiment Two:

[0032] In Embodiment One, each lengthened force arm structure 5 is controlled separately. When multiple people operate the handwheel simultaneously, multiple lengthened force arm structures 5 need to be opened one by one, debugged and positioned before use, which is rather cumbersome and has low efficiency. As an improvement, in this embodiment, the lengthened force arm structures 5 are provided on each of the support rods 3 and simultaneously extend or contract radially. By providing a built-in shaft 7 on each support rod 3, it is convenient for multiple people to operate, and the simultaneous control of extension or contraction can effectively improve the operation efficiency.

[0033] As Figures 5-7 shown, specifically, each support rod 3 is of a sleeve 6 structure, and the built-in shaft 7 is slidably arranged inside the sleeve 6. One side of the sleeve 6 is provided with a long strip-shaped through hole 21, and the end of the built-in shaft 7 is provided with a hinge ear 22 extending out from the through hole 21. On the one hand, the hinge ear 22 serves as a driving end for driving the movement of the built-in shaft 7, and on the other hand, it is used for limiting the stroke of the built-in shaft 7. Further, a collar part 23 is slidably arranged on the driving shaft 1, and a connecting rod 24 is connected between the outer wall of the collar part 23 and each hinge ear 22. Both ends of the connecting rod 24 are hinged to the collar part 23 and the hinge ear 22 respectively; it can be understood that when the collar part moves along the driving shaft 1, the plurality of surrounding connecting rods 24 simultaneously drive the corresponding built-in shafts 7 to extend outwards. As Figure 5 shown, the operation efficiency is relatively high.

[0034] To facilitate the synchronous automatic retraction of the built-in shaft 7, a spring 25 is wound around the driving shaft 1, and the spring 25 is located between the hub 2 and the collar part 23. When the collar part 23 is not limited, under the action of the spring 25, the collar part 23 is pushed to move away from the handwheel ring 4, and then the built-in shaft 7 is pulled back simultaneously through the connecting rod 24. Specifically, the built-in shaft 7 is positioned through the following structure when it extends out. As Figure 7As shown, a positioning groove 26 is provided on the inner wall of the collar portion 23, and an elastic clamping member 27 cooperating with the positioning groove 26 is provided on the driving shaft 1. Specifically, a receiving chamber 35 is provided in the driving shaft 1, and the elastic clamping member 27 moves in the receiving chamber 35. When it extends, its end can be inserted into the positioning groove 26 on the inner wall of the collar portion 23. Specifically, the extending end of the elastic clamping member 27 has a right-angled triangular inserting end 28, as Figure 7 shown. The inserting end 28 cooperates with the positioning groove 26 to position the collar portion 23. The inclined surface of the inserting end 28 is inclined downward, so that the collar portion slides on the inclined surface and presses the elastic clamping member 27 into the receiving chamber 35. When aligned with the positioning groove 26, the elastic clamping member 27 automatically pops out and is inserted into the positioning groove 26 to form positioning of the collar portion, thereby maintaining the extended length of the built-in shaft 7.

[0035] An unlocking portion is also provided on the driving shaft 1. The unlocking portion is connected to the elastic clamping member 27 and pulls it to contract, so that the inserting end 28 contracts and disengages from the positioning groove 26, unlocking the collar portion 23. Specifically, as Figure 7 shown, a channel 36 communicating with the receiving chamber 35 is provided inside the driving shaft 1. A traction wire 31 is arranged in the channel 36. The traction wire 31 is connected to the elastic clamping member 27. By pulling the traction wire 31, the elastic clamping member 27 contracts to achieve unlocking.

[0036] When the speed of the anchor chain or cable gets out of control, there is a chance that the handwheel will rotate at an accelerated speed through the driving shaft 1. To avoid accidents, in this case, the built-in shaft 7 should be retracted into the sleeve 6 to prevent the extended built-in shaft 7 from injuring the operator; as an improvement, an automatic centrifugal unlocking device is further included, which includes a flyweight 30, a traction wire 31, and a guide rail 32, as Figure 5 、 6 shown. The guide rail 32 is arranged radially along the handwheel rim 4. The flyweight 30 is slidably arranged on the guide rail 32. The flyweight 30 is connected to the elastic clamping member 27 through the traction wire 31. Magnets 33 attracting each other are respectively provided on the flyweight 30 and the guide rail 32. The magnets 33 position the flyweight 30 at the starting position, as Figure 7As shown in the figure, magnets are provided on both the guide rail and the flyweight. The magnet on the guide rail is located near the center of the circle, which is the starting position. Under normal circumstances, the flyweight is attracted to this position. When the rotation speed exceeds the limit, under the action of centrifugal force, the flyweight leaves tangentially along the contact surface of the two magnets, and the magnet positions the flyweight at the starting position. The flyweight 30 is a slider with a certain mass, which can slide freely on the guide rail 32. When the handwheel rotates at an accelerated speed to a certain threshold, the flyweight 30 is thrown out under the action of centrifugal force and moves along the guide rail 32. Then, the elastic clamping member 27 is pulled to contract through the traction wire 31, so that the sleeve replacement part is unlocked, and the built-in shaft 7 is retracted into the sleeve 6 under the action of the spring 25. In this embodiment, the centrifugal force generated at a certain rotation speed is used to unlock the collar part 23 and retract the built-in shaft 7, thereby improving the safety of the use of this device.

[0037] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An improved emergency brake handwheel, characterized in that: The invention comprises a wheel hub (2) arranged on a driven shaft (1), the wheel hub (2) being provided with support rods (3) around the wheel hub (2), the support rods (3) being evenly distributed around the wheel hub (2), the other end of the support rod (3) being fixedly provided with a hand wheel ring (4), the hand wheel ring (4) being coaxially arranged with the wheel hub (2), and also comprising an adjustable extended lever arm structure (5) which is telescopically adjustable in the radial direction; the extended lever arm structure (5) being provided with at least one group, which is based on the support rod (3) and is telescopically adjustable in the axial direction of the support rod (3), and comprising a sleeve (6) and a built-in shaft (7), the sleeve (6) being a hollow cylinder, and having an end pointing outwards being an opening (8), and one end of the built-in shaft (7) being inserted into the sleeve (6) through the opening (8) and being slidably connected thereto.

2. An improved emergency brake hand wheel according to claim 1, characterized in that: One end of the built-in shaft (7) connected to the wheel hub (2) is the center end, and the inner wall of the sleeve (6) is provided with an inner ring groove (9) at the center end. The inner ring groove (9) is provided with a side wall track (10) along the axial direction toward the opening (8) end. The insertion end of the built-in shaft (7) is provided with a sliding key (11). The sliding key (11) is placed in the inner ring groove (9) or the side wall track (10) and limits the rotation or axial extension length of the built-in shaft (7).

3. An improved emergency brake hand wheel according to claim 2, characterized in that: An insertion track (12) is provided axially between the center end and the opening (8) end, and the sliding key (11) is slidably inserted into the inner ring groove (9) through the insertion track (12) to install the built-in shaft (7).

4. The improved emergency brake hand wheel according to claim 1, characterized in that: A positioning ear (13) is provided at one end of the outer side of the built-in shaft (7), a step groove (14) matching the positioning ear (13) is provided on the hand wheel ring (4), a first pin hole (15) is provided on the positioning ear (13), a second pin hole (16) corresponding to the position of the first pin hole (15) is provided on the step groove (14), and a stop pin (17) is inserted into the two pin holes.

5. The improved emergency brake hand wheel according to claim 2, characterized in that: The side of the side wall track (10) is connected with a positioning side groove (18), the side wall of the sleeve (6) is provided with an elastic pin (19), and the built-in shaft (7) is provided with a clamping groove (20) that matches the elastic pin (19). When the built-in shaft (7) moves into the positioning side groove (18), the clamping groove (20) and the elastic pin (19) are locked and positioned.

6. The improved emergency brake hand wheel according to claim 1, characterized in that: The extended lever arm structure (5) is arranged on each of the support rods (3) and simultaneously moves in a radially extending or contracting manner.

7. An improved emergency brake hand wheel according to claim 6, characterized in that: Each of the support rods (3) is a sleeve (6) structure, a built-in shaft (7) is slidably arranged inside the sleeve (6), a long strip-shaped through hole (21) is arranged on one side of the sleeve (6), and a hinged ear (22) extending from the through hole (21) is arranged at the end of the built-in shaft (7), and a collar portion (23) is slidably arranged on the drive shaft (1), and the outer wall of the collar portion (23) and each hinged ear (22) are connected via a connecting rod (24), and both ends of the connecting rod (24) are hinged to the collar portion (23) and the hinged ear (22); a spring (25) is wound around the drive shaft (1), and the spring (25) is located between the hub (2) and the collar portion (23).

8. An improved emergency brake hand wheel according to claim 7, characterized in that: The inner wall of the collar portion (23) is provided with a positioning groove (26), and the drive shaft (1) is provided with an elastic clamping piece (27) that matches the positioning groove (26). The elastic clamping piece (27) has a right-angled triangle-shaped snap-in end (28), and the snap-in end (28) matches the positioning groove (26) to position the collar portion (23). The drive shaft (1) is also provided with an unlocking part, which is connected to the elastic clamping piece (27) and pulls it to contract, so that the snap-in end (28) contracts and disengages from the positioning groove (26), thereby unlocking the collar portion (23).

9. An improved emergency brake hand wheel according to claim 8, characterized in that: It also includes an automatic centrifugal unlocking device, which includes a swing block (30), a traction line (31), and a guide rail (32). The guide rail (32) is arranged along the radial direction of the hand wheel ring (4). The swing block (30) is slidably arranged on the guide rail (32). The swing block (30) and the elastic clamping member (27) are connected through the traction line (31). The swing block (30) and the guide rail (32) are respectively provided with magnets (33) that attract each other. The magnet (33) positions the swing block (30) at the starting position.

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