Crane slewing lock device and crane

Abstract

The utility model relates to the technical field of hoist, disclose a hoist slewing locking device and hoist. Hoist slewing locking device includes locking seat and locking piece, locking seat sets up in the rotating platform of hoist, locking piece sets up in the top surface of the chassis of hoist and from the inside of chassis close rotating platform extends to the outside edge of chassis away from rotating platform, locking piece can move along its extension direction to switch between the locking position of locking in locking seat and the unlocking position of unlocking from locking seat. The operation position of locking piece is moved to the outside edge of chassis, the mode that the traditional operator needs to climb to the chassis to carry out the locking or unlocking of rotating platform is optimized, the operator of the utility model only needs to stand in the position close to the outside of chassis to realize the locking or unlocking of rotating platform, so that the operator is easy to access locking piece and the locking or unlocking operation of locking piece and locking seat is simple, can avoid the injury of operator and influence other equipment on the chassis.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a crane slewing locking device and a crane. Background Technology

[0002] Cranes are devices used for lifting, lowering, and moving heavy objects, and are widely used in transportation, oil fields, mines, ports, steel, hydropower, military industry, and various engineering construction projects. A crane consists of a base frame, a turntable, and a working mechanism. The turntable is rotatably mounted on the base frame, while the working mechanism is fixedly mounted on the turntable. Rotation of the turntable drives the working mechanism to rotate. To ensure crane safety, the turntable must be locked when the crane is not in operation to prevent it from rotating the boom and other working mechanisms, which could cause property damage and loss of life.

[0003] Traditional rotary locking devices include a pin, a pin seat, and a socket provided on the turntable. The pin is arranged on the side wall of the turntable, and the pin seat is fixed to the base frame. On-site operators remove the pin on the side wall of the turntable and insert it into the socket on the turntable and the pin seat on the base frame in sequence to lock the turntable in rotation.

[0004] However, the pins of the aforementioned turntable locking device are placed on the side wall of the turntable, and the pin seats of the base frame are vertically fixed on the base frame and close to the turntable. It is difficult for on-site operators to access the pins and pin seats, making it difficult to pick up and put down the pins and inconvenient to operate. In addition, a large number of devices are placed on the base frame and fixed legs. When operators pick up and put down the pins and insert the pins into the pin seats, they need to step on the flat surface of the base frame, which can easily cause injury to the operators and affect other devices on the base frame. Utility Model Content

[0005] The purpose of this utility model is to overcome the problems of existing technology where on-site operators have difficulty accessing the pins and pin seats, resulting in difficulties in picking up and placing the pins, inconvenient operation, and the need for operators to step on the plane of the base frame to operate, which can easily lead to operator injury and affect other equipment on the base frame. The present invention provides a crane slewing locking device and crane, which makes it easy for operators to access the locking parts and the locking or disengaging operation of the locking parts and the locking seat is simple, and can avoid operator injury and affect other equipment on the base frame.

[0006] To achieve the above objectives, this utility model provides a crane slewing locking device, comprising: a locking seat disposed on the turntable of the crane; and a locking member disposed on the top surface of the crane's underframe and extending from the inner side of the underframe near the turntable to the outer edge of the underframe away from the turntable, the locking member being movable along its extending direction to switch between a locked position locked to the locking seat and an unlocked position unlocked from the locking seat.

[0007] In some embodiments, the locking member is used to engage with the locking seat to lock the locking seat.

[0008] In some embodiments, the locking seat is provided with a locking hole, and the locking member includes a locking rod, which is configured to extend from the inner side of the base frame near the turntable to the outer edge of the base frame away from the turntable, and is configured to be reciprocating along its extension direction to engage or disengage with the locking hole.

[0009] In some embodiments, the crane slewing locking device further includes a first support base disposed on the inner side of the base frame near the turntable, the first support base having a first through hole through which the locking rod movably passes; and / or the locking rod includes a first rod portion and a second rod portion connected together, the first rod portion being closer to the turntable relative to the second rod portion, and the outer diameter of the first rod portion being larger than the outer diameter of the second rod portion.

[0010] In some embodiments, the crane slewing locking device further includes a second support base disposed on the outer edge of the base frame away from the turntable, and the second support base has a second through hole through which the locking rod can be movably inserted.

[0011] In some embodiments, the locking element further includes a handle disposed at the end of the locking rod away from the turntable, and the second support base is provided with an opening for the handle to move along the extension direction of the locking rod.

[0012] In some embodiments, the second support base is further provided with a first slot and a second slot communicating with the opening. The first slot is closer to the turntable than the second slot. The handle can engage with the first slot or the second slot respectively to lock the locking member in the locked position or the unlocked position.

[0013] In some embodiments, the crane slewing locking device further includes a fixing member for securing the handle within the first slot.

[0014] In some embodiments, the fastener includes an elastic element sleeved outside the locking rod and located within the second through hole, the elastic element being configured to apply an elastic force to the locking rod in the locked position away from the turntable to press the handle into the first slot.

[0015] The second aspect of this utility model provides a crane, the crane including a base frame, a turntable rotatably disposed on the top surface of the base frame, and a crane rotation locking device as described in any of the above embodiments.

[0016] By using the above technical solution, the locking component is set to extend from the inner side of the base frame near the turntable to the outer edge of the base frame away from the turntable. The operating position of the locking component is moved to the outer edge of the base frame. The operator can operate the locking component near the outer edge of the base frame to control the locking component to move along its extension direction. This allows the locking component to lock onto the locking seat of the crane turntable or unlock from the locking seat, thereby locking the turntable to the base frame to prevent the turntable from rotating, or allowing the turntable to rotate relative to the base frame. The traditional method of requiring the operator to climb onto the base frame to lock or unlock the turntable is optimized so that the operator only needs to stand near the outer edge of the base frame to lock or unlock the turntable. This makes it easy for the operator to access the locking component and the locking or unlocking operation between the locking component and the locking seat is simple, avoiding injury to the operator and affecting other equipment on the base frame. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the crane slewing locking device disclosed in this utility model, which cooperates with the turntable and the base frame;

[0018] Figure 2 This is a schematic diagram of the locking component of the crane rotation locking device disclosed in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the locking member of the crane rotation locking device disclosed in this utility model in the locking position;

[0020] Figure 4 This is a structural schematic diagram of the crane slewing locking device disclosed in this utility model, showing the locking element in the unlocked position; and

[0021] Figure 5 This is a top view of the locking element of the crane slewing locking device disclosed in this utility model in the locking position.

[0022] Explanation of reference numerals in the attached figures

[0023] 1. Locking seat; 11. Locking hole; 2. Turntable; 3. Locking component; 31. Locking rod; 32. Handle; 4. First support seat; 5. Second support seat; 51. Opening; 52. First slot; 53. Second slot; 6. Elastic component; 7. Base frame. Detailed Implementation

[0024] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0025] In this utility model, unless otherwise stated, directional terms such as "inner" and "outer" generally refer to the inner and outer sides relative to the outline of the base frame itself.

[0026] The crane slewing locking device according to the present invention is described below with reference to the accompanying drawings.

[0027] See Figures 1 to 5 The crane slewing locking device includes a locking seat 1 and a locking member 3. The locking seat 1 is disposed on the turntable 2 of the crane, and the locking member 3 is disposed on the top surface of the base frame 7 of the crane and extends from the inner side of the base frame 7 near the turntable 2 to the outer edge of the base frame 7 away from the turntable 2. The locking member 3 can move along its extension direction to switch between a locked position locked to the locking seat 1 and an unlocked position unlocked from the locking seat 1.

[0028] As described above, by setting the locking member 3 to extend from the inner side of the base frame 7 near the turntable 2 to the outer edge of the base frame 7 away from the turntable 2, and moving the operating position of the locking member 3 to the outer edge of the base frame 7, the operator can operate the locking member 3 near the outer side of the base frame 7 to control the locking member 3 to move along its extension direction, so that the locking member 3 can lock onto the locking seat 1 of the crane turntable 2 or unlock from the locking seat 1, thereby locking the turntable 2 on the base frame 7 to prevent the turntable 2 from rotating, or allowing the turntable 2 to rotate relative to the base frame 7. The traditional method of requiring the operator to climb onto the base frame 7 to lock or unlock the turntable 2 is optimized so that the operator only needs to stand near the outer side of the base frame 7 to lock or unlock the turntable 2. This makes it easy for the operator to access the locking member 3 and the locking or unlocking operation of the locking member 3 and the locking seat 1 is simple, which can avoid injury to the operator and affect other equipment on the base frame 7.

[0029] Specifically, when it is necessary to lock the turntable 2 to the base frame 7, the operator operates the locking member 3 to move along the direction close to the locking seat 1 and lock it with the locking seat 1, thereby locking the turntable 2 to the base frame 7; when it is necessary to rotate the turntable 2 relative to the base frame 7, the operator operates the locking member 3 to move along the direction away from the locking seat 1 and separate it from the locking seat 1, thereby unlocking the locking member 3 from the locking seat 1; by controlling the reciprocating movement of the locking member 3 along its extension direction, the operator can switch between the locking position and the unlocking position, thereby enabling the turntable 2 to change under different operating conditions.

[0030] It should be noted that the locking seat 1 can be installed on the protruding connecting seat on the top of the turntable 2, or it can be installed on the side wall of the turntable 2. This utility model is not limited to the above-mentioned installation methods, as long as the locking seat 1 is installed at the corresponding position of the turntable 2 that can cooperate with the locking member 3.

[0031] It should be noted that the locking element 3 and the locking seat 1 can be locked together by a threaded connection. For example, the locking element 3 has an external thread at the end near the locking seat 1, and the locking seat 1 has an internal threaded hole that mates with the external thread. By screwing the threaded end of the locking element 3 into the internal threaded hole, the locking element 3 and the locking seat 1 can be locked together; by screwing the threaded end of the locking element 3 out of the internal threaded hole, the locking element 3 and the locking seat 1 can be unlocked.

[0032] See Figure 1 , Figures 3 to 5 In some embodiments, the locking member 3 is used to engage with the locking seat 1 to lock the locking seat 1. The engagement between the locking member 3 and the locking seat 1 enables the locking of the locking seat 1, and the engagement between the locking member 3 and the locking seat 1 makes the locking and unlocking operations simple and efficient.

[0033] In the above description, the locking seat 1 is provided with a locking hole 11, and the locking member 3 includes a locking rod 31. The locking rod 31 is configured to extend from the inner side of the base frame 7 near the turntable 2 to the outer edge of the base frame 7 away from the turntable 2, and is configured to be able to reciprocate along its extension direction to engage or disengage with the locking hole 11. The locking member 3 includes a locking rod 31, and the locking seat 1 is provided with a locking hole 11. Moving the locking rod 31 toward the locking hole 11 and inserting it into the locking hole 11 can lock the locking rod 31 with the locking seat 1; moving the locking rod 31 away from the locking hole 11 can unlock the locking rod 31 with the locking seat 1; and reciprocating the locking rod 31 along the direction toward or away from the locking hole 11 can lock or unlock the turntable 2.

[0034] See Figures 1 to 5 In some embodiments, the crane slewing locking device further includes a first support base 4, which is disposed on the inner side of the base frame 7 near the turntable 2. The first support base 4 has a first through hole through which the locking rod 31 can be movably inserted. The first support base 4 can effectively support the locking rod 31 and limit the stable movement of the locking rod 31 along its extension direction. Since the first support base 4 is disposed on the inner side of the base frame 7 near the turntable 2, it prevents the locking rod 31 from shaking during the insertion into the locking hole 11, thereby improving the accuracy of the locking rod 31's insertion into the locking hole 11. Furthermore, the first support base 4 can withstand the rotational force of the turntable 2 transmitted from the locking seat 1 to the locking rod 31, fixing the turntable 2 in the locked position and preventing the turntable 2 from rotating.

[0035] In some embodiments, the first support 4 is detachably mounted on the top surface of the base frame 7.

[0036] Among them, for example Figures 3 to 5As shown, the locking rod 31 includes a first rod portion and a second rod portion connected together. The first rod portion is closer to the turntable 2 than the second rod portion, and the outer diameter of the first rod portion is larger than the outer diameter of the second rod portion. The first rod portion can be inserted into the locking hole 11 of the locking seat 1. The larger outer diameter of the first rod portion can enhance the strength and stability of the insertion and engagement between the locking rod 31 and the locking seat 1; while the smaller outer diameter of the second rod portion can improve material utilization and reduce costs while ensuring the locking and unlocking functions of the locking rod 31.

[0037] It should be noted that the outer diameter of the second rod is 35%-60% of the outer diameter of the first rod to improve the locking rod 31.

[0038] In some implementations, for example Figure 1 As shown, the crane slewing locking device also includes a second support base 5, which is located on the outer edge of the base frame 7 away from the turntable 2. The second support base 5 has a second through hole through which the locking rod 31 can be movably inserted. The second support base 5 can effectively support the locking rod 31, limiting the stable movement of the locking rod 31 along its extension direction and preventing the locking rod 31 from deviating.

[0039] This ensures that the locking rod 31 can move stably along its extension direction; and since the first support base 4 is located on the inner side of the base frame 7 near the turntable 2, it prevents the locking rod 31 from shaking during the insertion into the locking hole 11, thereby improving the accuracy of the insertion of the locking rod 31 into the locking hole 11; furthermore, the first support base 4 can withstand the rotational force of the turntable 2 transmitted from the locking seat 1 to the locking rod 31, fixing the turntable 2 in the locked position and preventing the turntable 2 from rotating.

[0040] In some embodiments, the second support 5 is detachably mounted on the top surface of the base frame 7.

[0041] In this utility model, for example Figures 1 to 5 As shown, the first support base 4 and the second support base 5 are disposed at both ends of the locking rod 31 along its extension direction. The cooperation between the two can effectively improve the stability of the movement of the locking rod 31.

[0042] Among them, for example Figure 2 and Figure 5 As shown, the locking component 3 also includes a handle 32 located at the end of the locking rod 31 away from the turntable 2. The second support base 5 has an opening 51 for the handle 32 to move along the extension direction of the locking rod 31. The operator can effectively grip the locking component 3 using the handle 32, thereby effectively controlling the movement of the locking rod 31 along its extension direction. The opening 51 of the second support base 5 allows the handle 32 to move, effectively preventing the locking rod 31 from colliding with the second support base 5 during movement, and effectively limiting the movement position of the handle 32.

[0043] In the above, for example Figure 2 and Figure 5 As shown, the second support base 5 is also provided with a first slot 52 and a second slot 53 that communicate with the opening 51. The first slot 52 is closer to the turntable 2 than the second slot 53. The handle 32 can be engaged with the first slot 52 or the second slot 53 respectively to lock the locking member 3 in the locked position or the unlocked position. When it is necessary to lock the locking seat 1, the locking rod 31 is moved along the direction close to the locking seat 1 by the handle 32 to insert the locking rod 31 into the locking hole 11 of the locking seat 1, thereby locking the locking rod 31 and the locking seat 1. The handle 32 is then engaged in the first slot 52 close to the turntable 2, so that the locking member 3 can be locked in the locked position, preventing the locking member 3 from disengaging from the locking hole 11. When it is necessary to unlock the locking rod 31 from the locking seat 1, the locking rod 31 is moved along the direction away from the locking seat 1 by the handle 32 to disengage the locking rod 31 from the locking hole 11 of the locking seat 1, thereby unlocking the locking rod 31 and the locking seat 1. The handle 32 is then engaged in the second slot 53 away from the turntable 2, so that the locking member 3 can be locked in the unlocked position.

[0044] In some embodiments, the crane slewing locking device further includes a fixing member for securing the handle 32 within the first slot 52. To prevent the handle 32 from disengaging from the first slot 52 after being engaged, the crane slewing locking device is also provided with a fixing member for securing the handle 32 within the first slot 52. The fixing member ensures that the locking member 3 is stably fixed in the locking position and will not be disengaged from the locking position by external forces.

[0045] Among them, for example Figure 3 and Figure 4 As shown, the fixing component includes an elastic element 6 sleeved on the locking rod 31 and located in the second through hole. The elastic element 6 is configured to apply an elastic force to the locking rod 31 in the locked position away from the turntable 2 to press the handle 32 into the first slot 52. When it is necessary to lock the locking rod 31 in the locking seat 1, the locking rod 31 is moved along its extension direction and inserted into the locking hole 11, and the handle 32 is engaged into the first slot 52. The elastic element 6 sleeved on the locking rod 31 is compressed against the inner side wall of the second support seat 5 near the turntable 2. The compressed elastic element 6 can apply an elastic force to the locking rod 31 away from the turntable 2 to press the handle 32 into the first slot 52, preventing the handle 32 from dislodging from the first slot 52 due to external force and ensuring the effectiveness of locking.

[0046] The second aspect of this utility model provides a crane, which includes a base frame 7, a turntable 2 rotatably disposed on the top surface of the base frame 7, and a crane rotation locking device. The turntable 2 is locked to the base frame 7 by the crane rotation locking device, preventing the turntable 2 from rotating the working mechanism above it, thus avoiding loss of property and life. When the working mechanism on the turntable 2 needs to perform its work, the crane rotation locking device is unlocked, allowing the turntable 2 to rotate relative to the base frame 7.

[0047] The aforementioned crane is mounted on a crane transport vehicle. The crane's slewing locking device can effectively lock the turntable 2, preventing the turntable 2 from rotating the operating mechanism and causing property damage or loss of life when the crane transport vehicle is in motion or in other non-working conditions.

[0048] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0049] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0050] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A crane slewing locking device, characterized in that, include: Locking seat (1), said locking seat (1) is disposed on the turntable (2) of the crane; and A locking member (3) is disposed on the top surface of the base frame (7) of the crane and extends from the inner side of the base frame (7) near the turntable (2) to the outer edge of the base frame (7) away from the turntable (2). The locking member (3) is movable along its extension direction to switch between a locked position locked to the locking seat (1) and an unlocked position unlocked from the locking seat (1).

2. The crane slewing locking device according to claim 1, characterized in that, The locking member (3) is used to engage with the locking seat (1) to lock the locking seat (1).

3. The crane slewing locking device according to claim 2, characterized in that, The locking seat (1) is provided with a locking hole (11), and the locking member (3) includes a locking rod (31). The locking rod (31) is configured to extend from the inner side of the base frame (7) near the turntable (2) to the outer edge of the base frame (7) away from the turntable (2), and is configured to be able to reciprocate along its extension direction to engage or disengage with the locking hole (11).

4. The crane slewing locking device according to claim 3, characterized in that, The crane slewing locking device further includes a first support base (4), which is located on the inner side of the base frame (7) near the turntable (2). The first support base (4) has a first through hole through which the locking rod (31) can be movably inserted; and / or The locking rod (31) includes a first rod portion and a second rod portion connected together. The first rod portion is closer to the turntable (2) than the second rod portion, and the outer diameter of the first rod portion is larger than the outer diameter of the second rod portion.

5. The crane slewing locking device according to claim 3, characterized in that, The crane slewing locking device also includes a second support base (5), which is located on the outer edge of the base frame (7) away from the turntable (2). The second support base (5) has a second through hole through which the locking rod (31) can be movably inserted.

6. The crane slewing locking device according to claim 5, characterized in that, The locking member (3) also includes a handle (32) disposed at the end of the locking rod (31) away from the turntable (2), and the second support base (5) is provided with an opening (51) for the handle (32) to move along the extension direction of the locking rod (31).

7. The crane slewing locking device according to claim 6, characterized in that, The second support base (5) is also provided with a first slot (52) and a second slot (53) communicating with the opening (51). The first slot (52) is closer to the turntable (2) relative to the second slot (53). The handle (32) can be engaged with the first slot (52) or the second slot (53) respectively to lock the locking member (3) in the locked position or the unlocked position.

8. The crane slewing locking device according to claim 7, characterized in that, The crane slewing locking device also includes a fixing member, which is used to fix the handle (32) in the first slot (52).

9. The crane slewing locking device according to claim 8, characterized in that, The fastener includes an elastic element (6) sleeved outside the locking rod (31) and located in the second through hole. The elastic element (6) is configured to apply an elastic force to the locking rod (31) located in the locked position in a direction away from the turntable (2) to press the handle (32) into the first slot (52).

10. A crane, characterized in that, The crane includes a base frame (7), a turntable (2) rotatably mounted on the top surface of the base frame (7), and a crane rotation locking device as described in any one of claims 1-9.

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