Switching device for crown block and corresponding crown block

Abstract

The utility model discloses a switch device for a crown block and the corresponding crown block, and relates to the technical field of crown block equipment, a pull rope switch is arranged on the crown block, and the pull rope switch can be electrically connected with a brake of the crown block, so that the crown block can be controlled to stop by pulling the pull rope switch when an emergency occurs, collision of the crown block is avoided, and the service life of the crown block is prolonged. Meanwhile, a trigger is arranged on the crown block and comprises a base fixed to the crown block and a swing part rotationally installed on the base, the position, close to the base, of the swing part is connected with a pull rope switch through a steel wire rope, and the position, far away from the base, of the swing part is connected with a pull rope. According to the lever principle, the pull rope can be easily pulled downwards to drive the swing piece to rotate, the pull rope switch is driven to act through the steel wire rope, and therefore the brake is controlled to be started to achieve emergency stop.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overhead traveling crane equipment, and in particular to an overhead traveling crane switch device and a corresponding overhead traveling crane. BACKGROUND

[0002] As an integrated and efficient material handling equipment, the multifunctional overhead traveling crane plays an increasingly important role in modern industrial production. It is mainly applied in high-temperature and high-corrosion harsh working environments such as aluminum electrolysis workshops, and undertakes multiple tasks such as material handling, anode replacement, electrolyte addition, and equipment maintenance.

[0003] At present, multiple overhead traveling cranes are usually configured in an aluminum electrolysis workshop to work simultaneously, which significantly improves the operation efficiency of the overhead traveling cranes and the overall production efficiency. However, this layout also brings new problems: the risk of collision between overhead traveling cranes and between overhead traveling cranes and workshop buildings increases, which may cause safety accidents.

[0004] In related technologies, a pull rope switch is usually arranged on the overhead traveling crane, which can enable the operator to manually pull the steel wire rope to trigger the movement of the pull rope switch in an emergency, thereby controlling the overhead traveling crane to stop and avoiding collision. However, in actual operation, the operator often feels difficult to pull the steel wire rope due to the close fit of the steel wire rope with the main beam and end beam of the overhead traveling crane, especially in an emergency, it is difficult to quickly pull the steel wire rope to achieve emergency stop. CONTENT OF THE INVENTION

[0005] The present application provides an overhead traveling crane switch device and a corresponding overhead traveling crane, which can solve the problem that the operator is not convenient to pull the steel wire rope to trigger the pull rope switch to achieve emergency stop of the overhead traveling crane.

[0006] In one aspect, the present application provides an overhead traveling crane switch device, which includes a pull rope switch and a trigger. The pull rope switch is arranged on the overhead traveling crane, and the pull rope switch is electrically connected with a brake of the overhead traveling crane. The trigger includes a base fixed on the overhead traveling crane, and a swing member rotatably installed on the base. The swing member is connected with the pull rope switch through a steel wire rope at a position close to the base, and a pull rope is connected with the swing member at a position far away from the base. The swing member is driven to rotate by pulling down the pull rope, and the pull rope switch is driven to move by the steel wire rope to control the brake to start.

[0007] Optionally, in some embodiments, the base comprises two fixing members fixed on the trolley at intervals, the swinging member comprises a rotating arm and a swinging arm, opposite ends of the rotating arm are rotatably connected with the two fixing members respectively, one end of the swinging arm is connected with the rotating arm, one end of the steel wire rope is connected with the swinging arm at a position close to the rotating arm, and the other end of the swinging arm is connected with the pull rope.

[0008] Optionally, in some embodiments, the base further comprises a bearing, an inner ring of the bearing is rotatable relative to an outer ring of the bearing, the outer ring is fixed on the fixing member, and the inner ring is connected with one end of the rotating arm.

[0009] Optionally, in some embodiments, the trigger further comprises a reset member connected with the swinging member and the base, and the reset member is used to drive the trigger to reset.

[0010] Optionally, in some embodiments, the reset member comprises a torsion spring sleeved on a rotating shaft between the swinging member and the base, and opposite ends of the torsion spring are in abutment with the swinging member and the base respectively; and / or the reset member comprises an elastic rope, one end of the elastic rope is connected with the swinging member, and the other end of the elastic rope is connected with the base.

[0011] Optionally, in some embodiments, the trolley switch device further comprises a guide member arranged on the trolley, and the steel wire rope extends to the swinging member after winding around the guide member.

[0012] Optionally, in some embodiments, the guide member comprises a bracket fixed on the trolley and a guide wheel rotatably installed on the bracket, and the steel wire rope is wound around the guide wheel.

[0013] Optionally, in some embodiments, the pull rope switch has two pull rings, and the trolley switch device comprises two triggers, and the swinging member of each trigger is connected with one pull ring through one steel wire rope.

[0014] Optionally, in some embodiments, the rotating shaft of the swinging member is parallel to a horizontal plane.

[0015] In another aspect, the embodiments of the present application provide a trolley comprising a main beam, an end beam, and a trolley switch device as described above, opposite ends of the main beam are respectively provided with the end beam, a wheel and a brake for controlling the wheel to stop are installed on the end beam, and the trolley switch device is arranged on the main beam and electrically connected with the brake.

[0016] The technical effect of the switch device for the head sheave and the corresponding head sheave provided by the embodiment of the present application is that: the pull rope switch is arranged on the head sheave, and the pull rope switch can be electrically connected with the brake of the head sheave, so that the head sheave can be controlled to stop by pulling the pull rope switch when an emergency occurs, and the collision of the head sheave is avoided, meanwhile, the trigger is arranged on the head sheave, the trigger comprises a base fixed on the head sheave and a swing piece rotatably installed on the base, and the position of the swing piece close to the base is connected with the pull rope switch through the steel wire rope, and the position of the swing piece far away from the base is connected with the pull rope, therefore, the pull rope can be easily pulled down to drive the swing piece to rotate through the lever principle, and the pull rope switch is driven to move through the steel wire rope, so that the brake is started to realize the emergency stop. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, the drawings in the following description can only be some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A three-dimensional structural schematic diagram of the head sheave provided by the embodiment of the present application is provided.

[0019] Figure 2 A structural schematic diagram of the trigger provided by the embodiment of the present application is provided.

[0020] Figure 3 A structural schematic diagram of the guide provided by the embodiment of the present application is provided.

[0021] Figure 4 A structural schematic diagram of the pull rope switch provided by the embodiment of the present application is provided.

[0022] Explanation of the reference signs:

[0023] 1, pull rope switch; 11, pull ring; 2, head sheave; 21, brake; 22, main beam; 23, end beam; 24, wheel; 3, trigger; 31, base; 311, fixing piece; 312, bearing; 32, swing piece; 321, rotating arm; 322, swing arm; 33, reset piece; 331, elastic rope; 4, steel wire rope; 5, pull rope; 6, guide; 61, support; 62, guide wheel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] It should be noted that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts; in the description of the present application, it should be understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent.

[0026] At the same time, it should be noted that the description of "first", "second" and the like in the present utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In addition, in the present utility model, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be broadly understood, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0028] In addition, the technical solutions of the various embodiments of the present utility model can be combined with each other, but must be based on the fact that they can be realized by ordinary skilled persons in the art, when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present utility model.

[0029] On the one hand, please refer to Figure 1 A crown block provided by the embodiment of the present application, the crown block 2 is installed in an aluminum electrolysis workshop, commonly known as an aluminum electrolysis multifunctional crown block or aluminum electrolysis multifunctional unit, responsible for cleaning electrolyte deposits and residues, and performing crown block 2 installation and hoisting work on the upper and lower structures and other parts of the electrolytic cell, etc., the crown block 2 plays a crucial role in aluminum electrolysis production, greatly improves the work efficiency, reduces the labor intensity of the operator, and improves the production capacity of the aluminum plant.

[0030] Specifically, the overhead crane 2 includes a main beam 22, end beams 23, and a switch device for the overhead crane. The main beam 22 is generally arranged horizontally above the aluminum electrolysis cell. As the supporting structure of the overhead crane 2, the main beam 22 mainly bears the weight of the entire overhead crane 2 and transfers it to the column and the ground, thereby ensuring the stability and working efficiency of the overhead crane 2. End beams 23 are respectively provided at opposite ends of the main beam 22.

[0031] The end beam 23 is generally set perpendicular to the main beam 22. The main function of the end beam 23 is to support and fix the overall steel structure of the crane 2, which can ensure that the crane 2 remains stable and smooth during operation and prevent shaking or accidental tilting during operation. The end beam 23 is equipped with wheels 24 and brakes 21 for controlling the wheels 24 to stop. Usually, wheels 24 are installed at opposite ends of the end beam 23. The wheels 24 can ensure the smooth movement of the crane 2 on the track, while the brakes 21 can control the wheels 24 to stop, preventing the crane 2 from accidentally sliding or losing control during operation.

[0032] The overhead crane switch device can be installed on the main beam 22 and can be electrically connected to the brake 21, allowing the operator to manually pull the switch device to stop the overhead crane 2 in an emergency, thus preventing the overhead crane 2 from colliding.

[0033] On the other hand, please see Figure 1 This application provides a crane switch device, which includes a pull rope switch 1 and a trigger 3.

[0034] Specifically, the pull rope switch 1 can be installed on the crane 2, especially fixedly installed on the main beam 22 of the crane 2, and the pull rope switch 1 is located on the side of the main beam 22. The pull rope switch 1 can also be electrically connected to the brake 21 on the crane 2, and the brake 21 can be controlled by the pull rope switch 1.

[0035] When the pull rope switch 1 on the crane 2 is triggered, it sends an electrical signal to the brake 21. After receiving this signal, the brake 21 is activated, causing the wheels 24 of the crane 2 to decelerate and eventually stop. This electrical connection ensures that when it is necessary to stop, the pull rope switch 1 can quickly and accurately stop the crane 2 through the brake 21.

[0036] The trigger 3 may include a base 31 and a swing member 32. The base 31 may be fixedly mounted on the crane 2, particularly on the main beam 22 of the crane 2, and the base 31 is located on the end face of the main beam 22. The swing member 32 may be rotatably mounted on the base 31, so that the swing member 32 can rotate relative to the base 31. The swing member 32 is connected to the pull rope switch 1 by a steel wire rope 4 at a position closer to the base 31, and a pull rope 5 can be connected to the swing member 32 at a position farther from the base 31. The design of the swing member 32 cleverly utilizes the lever principle, so that the operator can easily pull down the pull rope 5 to drive the swing member 32 to rotate, and drive the pull rope switch 1 through the steel wire rope 4, thereby controlling the brake 21 to start and achieve emergency stop.

[0037] More specifically, the swing member 32 has two connection points. The first connection point is farther away from the pivot between the swing member 32 and the base 31, while the second connection point is relatively closer. This design makes the swing member 32 a non-equal arm lever.

[0038] One end of the pull rope 5 is connected to the first connection point, and the other end of the pull rope 5 extends to a position that is easy for the staff to reach. When the staff pulls the pull rope 5 down, the torque generated is large because the first connection point is far from the pivot, which makes the swinging part 32 able to rotate around the pivot relatively easily, thereby reducing the force required for operation and making it easy for the staff to operate.

[0039] Meanwhile, one end of the wire rope 4 is connected to the second connection point, and the other end of the wire rope 4 is connected to the pull rope switch 1. When the swinging member 32 rotates, the pull rope switch 1 can be driven to move through the transmission of the wire rope 4. In this process, due to the connection of the wire rope 4, the rotation of the swinging member 32 is converted into the action of the pull rope switch 1, thereby realizing the control of the brake 21.

[0040] Therefore, through the ingenious application of the lever principle, the entire system allows the operator to easily pull the pull rope 5 to drive the swing component 32 to rotate, and through the transmission of the wire rope 4, to realize the action of the pull rope switch 1, and finally control the brake 21 to start to achieve emergency stop. This design not only improves the convenience of operation, but also enhances the safety of the crane 2 in emergency situations.

[0041] Please see Figure 1 and Figure 2 In some embodiments, the base 31 may include two fasteners 311, which are fixed to the crane 2 in parallel and at intervals, particularly securely mounted on the end face of the crane 2, and each fastener 311 is provided with a rotating hole, which are coaxial.

[0042] The swing component 32 comprises two parts: a rotating arm 321 and a swing arm 322. Both the rotating arm 321 and the swing arm 322 adopt a round rod structure, which is both sturdy and durable. One end of the swing arm 322 is connected to the middle position of the rotating arm 321, making the overall structure of the swing component 32 compact and stable. In a more optimized solution, the swing arm 322 and the rotating arm 321 are integrally molded to form a T-shaped rod, which simplifies the structure and improves strength.

[0043] During assembly, the two opposite ends of the rotating arm 321 are inserted into the two rotating holes on the base 31, so that the swing arm 322 can rotate flexibly on the base 31 through the rotating arm 321. This makes the rotating arm 321 actually become the pivot between the swinging part 32 and the base 31, ensuring the flexibility and stability of the rotation.

[0044] One end of the wire rope 4 is connected to the swing arm 322 at a position closer to the rotating arm 321, while the other end of the swing arm 322, at a position farther from the rotating arm 321, is connected to the pull rope 5. This layout not only makes the overall structure simpler, but also allows the operator to easily drive the swing component 32 to rotate relative to the base 31 by pulling the pull rope 5.

[0045] Please see Figure 2 In some embodiments, the base 31 may also include a bearing 312, which includes an inner ring and an outer ring. The inner ring can rotate relative to the outer ring, while the outer ring can be fixed to the fixing member 311. The inner ring can be connected to one end of the rotating arm 321, so that the rotating arm 321 can be rotatably connected to the fixing member 311 through the bearing 312, making the rotation of the rotating arm 321 smoother. When the operator pulls the rope 5, they can feel a significant effort-saving effect because the rotational friction of the bearing 312 is small, reducing energy loss.

[0046] Please see Figure 2 In some embodiments, the trigger 3 may also include a reset member 33, which may be connected to the swing member 32 and the base 31. When the worker pulls the pull rope 5 downwards to drive the swing member 32 to rotate and drives the pull rope switch 1 to operate through the wire rope 4, the reset member 33 can drive the trigger 3 to reset when the worker releases the pull rope 5, so that the swing member 32 returns to its original initial position, making it convenient to pull the pull rope 5 again to drive the pull rope switch 1 to operate.

[0047] Please see Figure 2In some embodiments, the reset member 33 may include an elastic rope 331. One end of the elastic rope 331 may be connected to the swing member 32, and the other end of the elastic rope 331 may be connected to the base 31. Similarly, when the pull rope 5 drives the swing member 32 to rotate relative to the base 31, the swing member 32 will stretch the elastic rope 331. After the pull rope 5 is released, the elastic rope 331 will drive the swing member 32 back to its original position.

[0048] In some other embodiments, the reset member 33 may also include a torsion spring, which can be sleeved on the pivot between the swing member 32 and the base 31. Specifically, the rotating arm 321 of the swing member 32 is equivalent to the pivot between the swing member 32 and the base 31. The opposite ends of the rotating arm 321 can be respectively sleeved with torsion springs, and the opposite ends of each torsion spring abut against the swing member 32 and the base 31 respectively. Thus, when the pull rope 5 drives the swing member 32 to rotate relative to the base 31, the swing member 32 and the base 31 will compress the torsion spring. After the pull rope 5 is released, the torsion spring will drive the swing member 32 back to the initial position. Of course, the reset member 33 may also include both the elastic rope 331 and the torsion spring.

[0049] Please see Figure 1 and Figure 3 In some embodiments, the crane switching device may further include a guide 6, which may be disposed on the crane 2, particularly on the main beam 22 of the crane 2, and the guide 6 is located on the side of the main beam 22 and on the path through which the wire rope 4 passes, so that the wire rope 4 can be wound around the guide 6, and the wire rope 4 can extend toward the swing member 32 after passing around the guide 6. By setting the guide 6, the wire rope 4 can be kept out of contact with the main beam 22, which can reduce the friction force on the wire rope 4, so that the swing member 32 can drive the wire rope 4 more easily.

[0050] Please see Figure 3 In some embodiments, the guide member 6 may include a bracket 61 and a guide wheel 62. The bracket 61 may be fixed to the overhead crane 2. Preferably, the bracket 61 is fixed to the main beam 22 of the overhead crane 2. The guide wheel 62 may be rotatably mounted on the bracket 61, so that the guide wheel 62 can rotate relative to the bracket 61. The wire rope 4 may be wound around the guide wheel 62, so that when the wire rope 4 moves, it can drive the guide wheel 62 to rotate, making it easier to drive the wire rope 4 and further facilitating the driving of the wire rope 4.

[0051] Please see Figure 1 and Figure 4 In some embodiments, the pull rope switch 1 may have two pull rings 11, and pulling either pull ring 11 can trigger the pull rope switch 1. The overhead crane switch device may include two triggers 3, which are respectively disposed on opposite sides of the pull rope switch 1.

[0052] Specifically, two pull rings 11 are located on opposite sides of the pull rope switch 1, which is installed on the side of the main beam 22, so that the two pull rings 11 face opposite ends of the main beam 22. Two triggers 3 are respectively set on opposite end faces of the main beam 22. The swing element 32 of one trigger 3 can be connected to one pull ring 11 by a steel wire rope 4, and the swing element 32 of the other trigger 3 can also be connected to the other pull ring 11 by a steel wire rope 4, so that the ropes 5 are pulled at opposite ends of the main beam 22. When the crane 2 experiences an emergency, the staff can choose to pull the nearest pull rope 5 to control the crane 2 to stop more promptly.

[0053] Please see Figure 1 and Figure 2 In some embodiments, the rotation axis of the swing member 32 can be parallel to the horizontal plane, that is, the rotating arm 321 of the swing member 32 extends along the horizontal plane, so that the swing member 32 can rotate from top to bottom, so that the staff can easily pull the rope 5 below the swing member 32 to drive the swing member 32 to rotate.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A switching device for a crown block, characterized by comprising: The application relates to a hoist switch device, which comprises the following parts: a pull rope switch (1) arranged on a crown block (2) and electrically connected with a brake (21) of the crown block (2); a trigger (3) comprising a base (31) fixed on the crown block (2) and a swing piece (32) rotatably arranged on the base (31), wherein the swing piece (32) is connected with the pull rope switch (1) through a steel wire rope (4) at a position close to the base (31), and a pull rope (5) is connected with the swing piece (32) at a position far away from the base (31); the swing piece (32) is driven to rotate by pulling the pull rope (5) downward, and the pull rope switch (1) is driven to act through the steel wire rope (4) to control the brake (21) to start.

2. The switch device for a headgear according to claim 1, wherein The base (31) comprises two fixing pieces (311) fixed on the crown block (2) at intervals, the swing piece (32) comprises a rotating arm (321) and a swing arm (322), opposite ends of the rotating arm (321) are rotatably connected with the two fixing pieces (311), one end of the swing arm (322) is connected with the rotating arm (321), one end of the steel wire rope (4) is connected with the swing arm (322) at a position close to the rotating arm (321), and the pull rope (5) is connected with the swing arm (322) at a position far away from the rotating arm (321).

3. The switch device for a head wheel according to claim 2, wherein The base (31) further comprises a bearing (312), an inner ring of the bearing (312) is rotatable relative to an outer ring of the bearing (312), the outer ring is fixed on the fixing piece (311), and one end of the rotating arm (321) is connected with the inner ring.

4. The switch device for a head wheel according to claim 1, wherein The trigger (3) further comprises a reset piece (33) connected with the swing piece (32) and the base (31), and the reset piece (33) is used for driving the trigger (3) to reset.

5. The switch device for a head wheel according to claim 4, wherein The reset piece (33) comprises an elastic rope (331), one end of the elastic rope (331) is connected with the swing piece (32), and the other end of the elastic rope (331) is connected with the base (31).

6. The switch device for a headgear according to claim 1, wherein The application further comprises a guide piece (6) arranged on the crown block (2), and the steel wire rope (4) extends to the swing piece (32) after passing through the guide piece (6).

7. The switch device for a head wheel according to claim 6, wherein The guide piece (6) comprises a support (61) fixed on the crown block (2) and a guide wheel (62) rotatably arranged on the support (61), and the steel wire rope (4) is arranged on the guide wheel (62).

8. The switchgear for overhead line according to claim 1, wherein The pull rope switch (1) has two pull rings (11), the hoist switch device comprises two triggers (3), and the swing piece (32) of each trigger (3) is connected with one pull ring (11) through one steel wire rope (4).

9. The switchgear for overhead line according to claim 1, wherein The rotation axis of the swing piece (32) is parallel to a horizontal plane.

10. A crown block (2) characterized in that, The overhead travelling crane comprises a main beam (22), end beams (23), and a switch device for overhead travelling crane as claimed in any one of claims 1-9, opposite ends of the main beam (22) are respectively provided with the end beams (23), wheels (24) and a brake (21) for controlling the wheels (24) to stop are installed on the end beams (23), and the switch device for overhead travelling crane is arranged on the main beam (22) and electrically connected with the brake (21).

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