Anti-unhooking device for lifting hook of tower crane

Abstract

The utility model discloses a lifting hook anti-unhooking device of a tower crane, which comprises a support plate, a hook is fixedly connected to the bottom end of the support plate, a reinforcing ring is integrally formed on one side of the hook through casting, a rotating rod is inserted on the reinforcing ring, a clamping strip is sleeved on the rotating rod, a positioning hole is formed in the clamping strip, and clamping plates are fixedly connected to two sides of the bottom end of the support plate. One side of the positioning rod is sleeved with a connecting plate, one side of the connecting plate is in contact with a spring, the side, away from the connecting plate, of the positioning rod is fixedly connected with a baffle, the side, close to the hook, of the baffle is evenly and fixedly connected with auxiliary rods, and the auxiliary rods are movably connected with the clamping plate in an inserted mode; one end of the auxiliary rod is fixedly connected with the connecting plate, the connecting plate can be hidden through the arrangement of the hidden groove, the clamping strip is convenient to disassemble, the connecting plate can be conveniently placed through the arrangement of the hidden groove, meanwhile, the connecting plate is more convenient to disassemble, and the rigidity of the clamping strip can be improved through the arrangement of the connecting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of hook anti-dropping, in particular to a hook anti-dropping device for a tower crane. Background Art

[0002] A tower crane is a rotating crane with a boom mounted on the top of a tall tower. It is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. Usually, a tower crane is connected to a storage frame for loading materials through a hook, and a tongue is installed on the hook to increase stability during use. When the diameter of the rope is too large, it will be difficult to remove the rope, and the staff often dismantle it violently.

[0003] According to "A kind of anti-unhooking device for hook of crane" with Chinese patent publication number CN218231533U, it mainly describes that the slot one of the anti-unhooking bracket is driven by a worm to be inserted into the slot two of the hook head, thereby blocking the bayonet of the hook head, and the self-locking structure of the worm and the worm wheel makes the slot one and the slot two stably connected, thereby realizing anti-unhooking. The rubber is better than the traditional inner rotation baffle, and the baffle will not be stuck when hanging thicker and multi-strand steel cables. The ratchet and the pawl cooperate, so that the position of the worm can be locked when the anti-unhooking bracket and the hook head are connected in place, thereby preventing the worm from rotating due to shaking during lifting, and then causing the anti-unhooking bracket to be dislocated, thereby ensuring the stable connection of the anti-unhooking structure. When disassembling the anti-unhooking bracket, it is necessary to adjust the teeth of the worm and the worm wheel to make the anti-unhooking bracket disengage from the slot one and the slot two. In the working environment of the tower crane, rust will occur, making disassembly troublesome.

[0004] Therefore, a hook anti-unhooking device for a tower crane is proposed to solve the problem that rust may occur in the working environment of the tower crane, resulting in troublesome disassembly. Utility Model Content

[0005] The technical problem to be solved by the utility model is that in the working environment of a tower crane, rust may occur, resulting in the problem of troublesome disassembly, so a hook anti-unhooking device for a tower crane is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a hook anti-unhooking device for a tower crane, comprising a support plate, a hook is fixedly connected to the bottom end of the support plate, a reinforcement ring is integrally formed on one side of the hook by casting, a rotating rod is inserted on the reinforcement ring and a clamping strip is sleeved on the rotating rod, a positioning hole is opened on the clamping strip, clamping plates are fixedly connected to both sides of the bottom end of the support plate, a positioning rod is inserted in the clamping plate, the positioning rod is inserted with a clamping hole and the clamping hole is located on the hook, a connecting plate is sleeved on one side of the positioning rod, a spring is contacted on one side of the connecting plate, and a baffle is fixedly connected to the side of the positioning rod away from the connecting plate.

[0007] As a preferred technical solution of the utility model, the baffle is evenly fixedly connected with an auxiliary rod on one side close to the hook. The auxiliary rod is movably inserted into the card plate. One end of the auxiliary rod is fixedly connected to the connecting plate. By setting a hidden groove, the connecting plate can be hidden, which is convenient for removing the card strip.

[0008] As a preferred technical solution of the utility model, hidden grooves are provided on opposite sides of the two card plates, and the hidden grooves correspond to the positions of the connecting plates. By setting the hidden grooves, the connecting plates can be placed easily and the removal of the connecting plates can be more convenient.

[0009] As a preferred technical solution of the utility model, a connecting rod is evenly and fixedly connected between the two clamping strips, and the connecting rod is made of metal material. The rigidity of the clamping strip can be improved by providing the connecting rod.

[0010] As a preferred technical solution of the utility model, an insertion rod is inserted into the clamping strip, one side of the insertion rod contacts a positioning bolt, the positioning bolt is threadedly connected to both sides of the rotating rod, and an arc-shaped depression is formed on the positioning bolt and corresponds to the insertion rod.

[0011] The utility model has the following advantages: by setting the hidden groove, the connecting plate can be hidden, which is convenient for disassembling the card strip; by setting the hidden groove, the connecting plate can be placed easily and disassembling the connecting plate is more convenient; by setting the connecting rod, the rigidity of the card strip can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side cross-sectional structural schematic diagram of a hook unhooking device for a tower crane according to a preferred embodiment of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of a hook anti-unhooking device for a tower crane according to a preferred embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the enlarged structure of position A of a hook anti-unhooking device for a tower crane in a preferred embodiment of the utility model.

[0015] Explanation of the accompanying reference numerals: 1. Support plate; 2. Hook; 3. Rotating rod; 4. Card strip; 5. Card plate; 6. Positioning rod; 7. Connecting plate; 8. Spring; 9. Baffle; 10. Hidden groove; 11. Auxiliary rod; 12. Positioning hole; 13. Connecting rod; 14. Card hole; 15. Positioning bolt; 16. Arc-shaped depression; 17. Insert rod. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3 The illustrated embodiment is a hook anti-unhooking device for a tower crane, comprising a support plate 1, a hook 2 being fixedly connected to the bottom end of the support plate 1, a reinforcement ring being integrally formed on one side of the hook 2 by casting, a rotating rod 3 being inserted into the reinforcement ring and a clamping strip 4 being sleeved on the rotating rod 3, a positioning hole 12 being provided on the clamping strip 4, clamping plates 5 being fixedly connected to both sides of the bottom end of the support plate 1, a positioning rod 6 being inserted into the clamping plate 5, a clamping hole 14 being inserted into the positioning rod 6 and the clamping hole 14 being located on the hook 2, a connecting plate 7 being sleeved on one side of the positioning rod 6, a spring 8 being in contact with one side of the connecting plate 7, and a baffle 9 being fixedly connected to the side of the positioning rod 6 away from the connecting plate 7.

[0018] Among them, an auxiliary rod 11 is evenly and fixedly connected to one side of the baffle plate 9 close to the hook 2 , the auxiliary rod 11 is movably plugged into the card plate 5 , and one end of the auxiliary rod 11 is fixedly connected to the connecting plate 7 .

[0019] Among them, a hidden groove 10 is opened on the opposite side of the two clamping plates 5, and the hidden groove 10 corresponds to the position of the connecting plate 7.

[0020] A connecting rod 13 is evenly and fixedly connected between the two clamping strips 4 , and the connecting rod 13 is made of metal material.

[0021] Among them, an insertion rod 17 is inserted into the clamping strip 4, and one side of the insertion rod 17 contacts a positioning bolt 15, and the positioning bolt 15 is threadedly connected to both sides of the rotating rod 3. An arc-shaped recess 16 is opened on the positioning bolt 15 and the arc-shaped recess 16 corresponds to the insertion rod 17.

[0022] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0023] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A hook anti-unhooking device for a tower crane, comprising a support plate (1), a hook (2) being fixedly connected to the bottom end of the support plate (1), characterized in that: A reinforcing ring is integrally formed on one side of the hook (2) by casting, a rotating rod (3) is inserted on the reinforcing ring, and a clamping strip (4) is sleeved on the rotating rod (3), a positioning hole (12) is opened on the clamping strip (4), both sides of the bottom end of the support plate (1) are fixedly connected with clamping plates (5), a positioning rod (6) is inserted in the clamping plate (5), the positioning rod (6) is inserted with a clamping hole (14), and the clamping hole (14) is located on the hook (2), a connecting plate (7) is sleeved on one side of the positioning rod (6), a spring (8) is contacted on one side of the connecting plate (7), and a baffle (9) is fixedly connected to the side of the positioning rod (6) away from the connecting plate (7).

2. The anti-unhooking device for the hook of a tower crane according to claim 1, characterized in that: An auxiliary rod (11) is evenly and fixedly connected to one side of the baffle plate (9) close to the hook (2); the auxiliary rod (11) is movably plugged into the card plate (5); and one end of the auxiliary rod (11) is fixedly connected to the connecting plate (7).

3. The anti-unhooking device for the hook of a tower crane according to claim 2, characterized in that: A hidden groove (10) is provided on one opposite side of the two clamping plates (5), and the hidden groove (10) corresponds to the position of the connecting plate (7).

4. The anti-unhooking device for the hook of a tower crane according to claim 1, characterized in that: A connecting rod (13) is evenly and fixedly connected between the two clamping strips (4), and the connecting rod (13) is made of metal material.

5. The anti-unhooking device for the hook of a tower crane according to claim 4, characterized in that: The clamping strip (4) is plugged with an insertion rod (17), one side of the insertion rod (17) contacts a positioning bolt (15), the positioning bolt (15) is threadedly connected to both sides of the rotating rod (3), and an arc-shaped recess (16) is formed on the positioning bolt (15) and the arc-shaped recess (16) corresponds to the insertion rod (17).

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