CN222042389U - Variable-frequency speed-regulating tower crane - Google Patents

Abstract

The utility model relates to a variable frequency speed regulating tower crane, which belongs to the field of cranes, and includes a frame, a cable, a connecting platform, a hook and a blocking rod; the cable is slidably arranged on the frame; the connecting platform is arranged on the cable; the hook is slidably arranged at the lower end of the connecting platform in a vertical direction, and a buffer mechanism is arranged on the hook; the buffer mechanism is slidably connected with the connecting platform; an opening is arranged on the hook, and the blocking rod is rotatably arranged on the hook, and the blocking rod is located at the opening, and a clamping mechanism is arranged on the blocking rod; the clamping mechanism is clamped with the hook. The utility model performs transition through the buffer mechanism, so as to protect the cable.

Description

Variable-frequency speed-regulating tower crane

Technical Field

The utility model relates to the field of cranes, in particular to a variable-frequency speed-regulating tower crane.

Background

The tower crane is a rotary crane with a boom mounted on the upper part of a towering tower body. The working range is large, and the material is mainly used for vertical transportation of materials and component installation in multi-layer and high-rise building construction. The device consists of a metal structure, a working mechanism and an electrical system. The metal structure comprises a tower body, a movable arm, a base, an attaching rod and the like. The working mechanism comprises four parts of lifting, amplitude changing, rotation and walking.

Traditional tower crane is through setting up running gear at the swing arm, running gear connects the electric hoist, and the couple through the cable lower extreme is fixed the article, lifts by crane, however does not possess buffer unit on the couple, when lifting by crane the heavy object, because strength directly strikes on the cable, leads to the cable to damage easily.

Disclosure of utility model

The utility model aims to solve the problems in the background art and provides a variable-frequency speed-regulating tower crane which can protect a cable through transition of a buffer mechanism.

The technical scheme of the utility model is as follows: a variable frequency speed regulation tower crane comprises a frame, a cable, a connecting table, a lifting hook and a blocking rod;

The cable is arranged on the frame in a sliding way; the connecting table is arranged on the cable; the lifting hook is arranged at the lower end of the connecting table in a sliding manner along the vertical direction, and a buffer mechanism is arranged on the lifting hook; the buffer mechanism is connected with the connecting table in a sliding way; the lifting hook is provided with an opening, the blocking rod is rotatably arranged on the lifting hook, the blocking rod is positioned at the opening, and the blocking rod is provided with a clamping mechanism; the clamping mechanism is clamped with the lifting hook.

Preferably, the rack comprises a supporting frame, a supporting arm and a variable frequency retractor; the supporting arm is rotatably arranged on the supporting frame; the variable frequency winding device is arranged on the supporting arm; the cable is connected with the variable frequency winding device.

Preferably, the clamping mechanism comprises a limit column and a first elastic piece; the limiting column is arranged in the blocking rod in a sliding manner, the first elastic piece is arranged on the limiting column, and two ends of the first elastic piece are respectively connected with the limiting column and the blocking rod; the lower extreme embedding of spacing post sets up in the lifting hook.

Preferably, the limiting column is provided with a push rod; the blocking rod is provided with a sliding groove, the push rod is arranged in the sliding groove in a sliding mode, the first elastic piece is located in the sliding groove, and one end of the push rod protrudes out of the blocking rod.

Preferably, the buffer mechanism comprises a blocking block, a sliding column and a second elastic piece; the blocking piece sets up the upper end at the slip post, and the slip post sets up on the lifting hook, and the slip post slides and sets up on the connection platform, and the second elastic component sets up in the periphery side of slip post, and the both ends of second elastic component are connected with blocking piece and connection platform respectively.

Preferably, the connection table is provided with an observation groove, and the second elastic piece is located in the observation groove.

Preferably, the lifting hook and the blocking rod are both provided with bevel ports.

Compared with the prior art, the utility model has the following beneficial technical effects:

When a heavy object is hoisted, the blocking block is pushed to move through the second elastic piece, the blocking block drives the sliding column to move, the sliding column supports the lifting hook, so that a certain buffering effect can be achieved, the cable is prevented from being broken or an object to be hoisted is prevented from being broken due to direct rigid connection, when the object to be hoisted is placed on the lifting hook, the blocking rod is firstly released from being limited through the clamping mechanism, so that the blocking rod can rotate, an opening can be opened, the object to be hoisted is clamped in the lifting hook, then the blocking rod is closed, and the blocking rod is fixed through the clamping mechanism, so that the blocking rod is prevented from rotating.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of an embodiment of the present utility model;

fig. 3 is a schematic view of a partial enlarged structure at a in fig. 2.

Reference numerals: 1. a support frame; 2. a support arm; 3. a variable frequency retractor; 4. a cable; 5. a connection station; 6. a lifting hook; 7. a blocking lever; 8. a clamping mechanism; 801. a limit column; 802. a first elastic member; 803. a push rod; 9. a buffer mechanism; 901. a blocking piece; 902. a sliding column; 903. and a second elastic member.

Detailed Description

Example 1

As shown in fig. 1-3, the variable frequency speed-regulating tower crane provided by the utility model comprises a frame, a cable 4, a connecting table 5, a lifting hook 6 and a blocking rod 7;

The cable 4 is arranged on the frame in a sliding way; the connecting table 5 is arranged on the cable 4; the lifting hook 6 is arranged at the lower end of the connecting table 5 in a sliding manner along the vertical direction, and a buffer mechanism 9 is arranged on the lifting hook 6; the buffer mechanism 9 is in sliding connection with the connecting table 5; the lifting hook 6 is provided with an opening, the blocking rod 7 is rotatably arranged on the lifting hook 6, the blocking rod 7 is positioned at the opening, and the blocking rod 7 is provided with a clamping mechanism 8; the clamping mechanism 8 is clamped with the lifting hook 6. The lifting hook 6 and the blocking rod 7 are respectively provided with a bevel connection, and the bevel connection can be used for conveniently putting in or taking out articles to be lifted. The rack comprises a supporting frame 1, a supporting arm 2 and a variable frequency retractor 3; the support arm 2 is rotatably arranged on the support frame 1; the variable frequency retractor 3 is arranged on the supporting arm 2; the cable 4 is connected with the variable frequency winder 3.

The buffer mechanism 9 includes a blocking piece 901, a slide column 902, and a second elastic piece 903; the blocking piece 901 is provided at the upper end of the sliding column 902, the sliding column 902 is provided on the hook 6, the sliding column 902 is slidably provided on the connection table 5, the second elastic piece 903 is provided at the outer peripheral side of the sliding column 902, and both ends of the second elastic piece 903 are respectively connected with the blocking piece 901 and the connection table 5. The connection table 5 is provided with an observation groove, and the second elastic member 903 is located in the observation groove, and the observation groove can observe the state of the second elastic member 903, so as to determine whether the second elastic member 903 needs to be replaced.

In this embodiment, support frame 1 supports support arm 2, support arm 2 supports variable frequency coiler 3 and cable 4, carry out the rolling operation to cable 4 through variable frequency coiler 3, cable 4 drives connection platform 5 and removes, connection platform 5 can drive lifting hook 6 and remove, when the hoist and mount heavy object, promote the block piece 901 through second elastic component 903 and remove, the block piece 901 drives the slip post 902 and removes, the slip post 902 supports lifting hook 6, thereby can play certain cushioning effect, prevent rigid lug connection, lead to cable 4 fracture or wait to hoist and mount article fracture, when putting into the article of waiting to hoist and mount on hanging hook 6, firstly remove the spacing to blocking lever 7 through joint mechanism 8, thereby make blocking lever 7 can rotate, thereby can open the opening, with waiting to hoist and mount article card income lifting hook 6 in, again with blocking lever 7 close, fix through joint mechanism 8, prevent blocking lever 7 rotation.

Example two

As shown in fig. 1-3, in the variable frequency speed-regulating tower crane according to the present utility model, compared with the first embodiment, the clamping mechanism 8 in the present embodiment includes a limiting post 801 and a first elastic member 802; the limiting column 801 is slidably arranged in the blocking rod 7, the first elastic piece 802 is arranged on the limiting column 801, and two ends of the first elastic piece 802 are respectively connected with the limiting column 801 and the blocking rod 7; the lower end of the limiting column 801 is embedded and arranged in the lifting hook 6. A push rod 803 is arranged on the limit column 801; the blocking rod 7 is provided with a sliding groove, the push rod 803 is slidably arranged in the sliding groove, the first elastic piece 802 is positioned in the sliding groove, and one end of the push rod 803 protrudes out of the blocking rod 7.

In this embodiment, when blocking lever 7 closes to lifting hook 6 on, push rod 803 promotes spacing post 801 and removes, make spacing post 801 insert in lifting hook 6, thereby avoid blocking lever 7 removal, thereby can carry out spacingly to blocking lever 7, prevent blocking lever 7 rotation, when blocking lever 7 needs to be opened, then lift up push rod 803, push rod 803 drives spacing post 801 and remove, make spacing post 801 shift out in from lifting hook 6, thereby make blocking lever 7 can remove, thereby can carry out the couple operation, blocking lever 7 can rotate to lifting hook 6 in or outside, thereby can freely select according to specific use needs, prevent because the diameter of the article of waiting to couple is too big, lead to being difficult to the couple, and the maximum diameter of the article that can couple is less than the opening of lifting hook 6.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims (7)

1. A variable frequency speed regulating tower crane, characterized in that it comprises a frame, a cable (4), a connecting platform (5), a hook (6) and a blocking rod (7); The cable (4) is slidably arranged on the frame; the connecting platform (5) is arranged on the cable (4); the hook (6) is slidably arranged at the lower end of the connecting platform (5) in the vertical direction, and a buffer mechanism (9) is arranged on the hook (6); the buffer mechanism (9) is slidably connected with the connecting platform (5); an opening is arranged on the hook (6), a blocking rod (7) is rotatably arranged on the hook (6), and the blocking rod (7) is located at the opening, and a clamping mechanism (8) is arranged on the blocking rod (7); the clamping mechanism (8) is clamped with the hook (6). 2. A variable frequency speed regulating tower crane according to claim 1, characterized in that the frame comprises a support frame (1), a support arm (2) and a variable frequency retractor (3); the support arm (2) is rotatably arranged on the support frame (1); the variable frequency retractor (3) is arranged on the support arm (2); and the cable (4) is connected to the variable frequency retractor (3). 3. A variable frequency speed regulating tower crane according to claim 1, characterized in that the clamping mechanism (8) includes a limiting column (801) and a first elastic member (802); the limiting column (801) is slidably arranged in the blocking rod (7), the first elastic member (802) is arranged on the limiting column (801), and the two ends of the first elastic member (802) are respectively connected to the limiting column (801) and the blocking rod (7); the lower end of the limiting column (801) is embedded in the hook (6). 4. A variable frequency speed regulating tower crane according to claim 3, characterized in that a push rod (803) is arranged on the limit column (801); a sliding groove is arranged on the blocking rod (7), the push rod (803) is slidably arranged in the sliding groove, the first elastic member (802) is located in the sliding groove, and one end of the push rod (803) protrudes from the blocking rod (7). 5. A variable frequency speed regulating tower crane according to claim 1, characterized in that the buffer mechanism (9) comprises a blocking block (901), a sliding column (902) and a second elastic member (903); the blocking block (901) is arranged at the upper end of the sliding column (902), the sliding column (902) is arranged on the hook (6), the sliding column (902) is slidably arranged on the connecting platform (5), the second elastic member (903) is arranged on the outer peripheral side of the sliding column (902), and the two ends of the second elastic member (903) are respectively connected to the blocking block (901) and the connecting platform (5). 6. A variable frequency speed regulating tower crane according to claim 5, characterized in that an observation slot is provided on the connecting platform (5), and the second elastic member (903) is located in the observation slot. 7. A variable frequency speed regulating tower crane according to claim 1, characterized in that both the hook (6) and the blocking rod (7) are provided with beveled openings.