Crane hook protection device

Abstract

The utility model discloses a crane hook protection device, which relates to the technical field of crane hooks and comprises a hook frame, a sliding groove is arranged on the inner wall of the hook frame, and a protection mechanism is arranged on the inner wall of the sliding groove. The protection mechanism comprises a sliding block arranged on the inner wall of the sliding groove and slidably connected with the sliding block, a connecting plate is fixed to the end, away from the sliding groove, of the sliding block, and a connecting column is fixed to the top end of the connecting plate. Through the protection mechanism, when the cable is hooked, the cable extrudes the connecting block on the surface of the lifting hook, so that oil in the arc-shaped piston cavity extrudes the piston plate to drive the limiting hook to protect the cable and prevent the cable from unhooking; and then a crane is connected with a lifting hook connector, and a lifting hook is contracted to the inner wall of the lifting hook frame by pulling a connecting column, so that the mooring rope is protected again, the situation that goods shake during lifting is avoided, the goods are protected, and the personal safety of public personnel is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of crane hooks, in particular to a crane hook protection device. Background Art

[0002] Cranes often use ropes to lift heavy objects on hooks. Since ropes are flexible components, during the lifting process, the hook or heavy objects are prone to swing due to their own inertia or external factors such as wind, which reduces the positioning accuracy. At the same time, the back and forth swing of the hook increases working time and increases work intensity. At present, many cranes only rely on the operator's operating experience to achieve anti-sway.

[0003] An existing patent (publication number: CN 211545678 U) discloses a crane hook anti-sway protection device, which compresses a spring to give the hook a certain buffer force when the hook or heavy object swings due to its own inertia or external factors such as wind during the hoisting process, so as to avoid excessive shaking and increase the risk factor; when lubricating oil is applied to the ball hinge, excess lubricating oil will drip into the barrel and will not drip onto the hoisted objects; when the lubricating oil in the barrel is stored to a certain amount, the induction probe transmits the information to the sensor, and the warning light on the sensor transmits the information to the staff.

[0004] However, the above technical solution still has certain defects. Since the hook of the crane hook anti-sway protection device is a U-shaped structure when in use, if the cargo shakes during lifting, the cargo will fall and cause damage to the cargo body, and it will cause safety hazards to the staff. Therefore, a crane hook protection device is proposed. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a crane hook protection device to solve the technical problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical solutions: a crane hook protection device, comprising a hook frame, the inner wall of the hook frame is provided with a sliding groove, the inner wall of the sliding groove is provided with a protection mechanism;

[0007] The protective mechanism includes a sliding block arranged on the inner wall of the sliding groove and slidably connected thereto, a connecting plate is fixed to the end of the sliding block away from the sliding groove, a connecting column is fixed to the top of the connecting plate, a connecting rod is fixed to the end of the connecting column away from the connecting plate, a hook connecting head is fixed to the end of the connecting rod away from the connecting column, a fixing column is fixed to the bottom end of the connecting plate, a hook is fixed to the end of the fixing column away from the connecting plate, an arc-shaped piston cavity is provided inside the hook, a return spring is fixed inside the arc-shaped piston cavity, a connecting block is connected to the top of the return spring, a piston plate is provided on the inner wall of the arc-shaped piston cavity and is slidably connected thereto, and a limiting hook is fixed to one end of the piston plate.

[0008] As a preferred technical solution of a crane hook protection device of the utility model, the sliding groove, the sliding block and the hook are all symmetrically arranged according to the longitudinal center axis of the hook frame.

[0009] As a preferred technical solution of a crane hook protection device of the utility model, a fixing plate is fixed to the inner wall of the hook frame, a circular hole is opened at the center of the fixing plate, and the size of the hole matches the connecting column.

[0010] As a preferred technical solution of a crane hook protection device of the utility model, a buffer spring is fixed to the top end of the connecting plate, and one end of the buffer spring away from the connecting plate is fixed to the bottom end of the fixed plate.

[0011] As a preferred technical solution of a crane hook protection device of the utility model, an auxiliary spring is fixed to the top of the sliding block, and one end of the auxiliary spring away from the sliding block is fixed to the bottom of the sliding groove.

[0012] As a preferred technical solution of a crane hook protection device of the utility model, the size of the bottom end of the hook frame is larger than the size of the hook, and the hook can be displaced inside it.

[0013] As a preferred technical solution of a crane hook protection device of the utility model, a usage meter storage frame is fixed to the front end surface of the hook frame, and a nameplate fixed to the front end surface of the hook frame is provided on one side of the usage meter storage frame.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] 1. The utility model can use the protective mechanism to squeeze the connecting block on the hook surface through the cable when the cable is hooked, so that the oil inside the arc-shaped piston cavity squeezes the piston plate to drive the limit hook to protect the cable to prevent it from being unhooked, and then the crane is connected to the hook connector to retract the hook back to the inner wall of the hook frame by pulling the connecting column, so as to protect the cable again and prevent the goods from shaking during hoisting, thereby protecting the goods and protecting the personal safety of public personnel;

[0016] 2. The utility model provides a buffer spring between the connecting plate and the fixing plate to buffer the goods hoisted by the hook, and an auxiliary spring provides auxiliary buffering. The use record of the hook frame can be recorded in the storage frame for staff to check, and the nameplate can be used for display. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the hook frame of the utility model;

[0019] Figure 3 This is a schematic diagram of the protection mechanism structure of the utility model;

[0020] Figure 4 This is an internal cross-sectional view of the hook of the utility model.

[0021] In the figure: 100, hook frame; 200, protection mechanism;

[0022] 110, storage frame for table; 120, nameplate; 130, sliding groove; 140, fixing plate; 141, round hole; 150, buffer spring; 160, auxiliary spring;

[0023] 210, sliding block; 220, connecting plate; 230, connecting column; 240, connecting rod; 250, hook connector; 260, fixing column; 270, hook; 271, arc-shaped piston chamber; 272, connecting block; 273, return spring; 280, piston plate; 281, limit hook. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] A crane hook protection device, such as Figures 1 to 4 As shown, it includes a hook frame 100, the inner wall of the hook frame 100 is provided with a sliding groove 130, and the inner wall of the sliding groove 130 is provided with a protective mechanism 200;

[0027] The protection mechanism 200 includes a sliding block 210 arranged on the inner wall of the sliding groove 130 and slidably connected thereto, a connecting plate 220 is fixed to the end of the sliding block 210 away from the sliding groove 130, a connecting column 230 is fixed to the top of the connecting plate 220, a connecting rod 240 is fixed to the end of the connecting column 230 away from the connecting plate 220, a hook connector 250 is fixed to the end of the connecting rod 240 away from the connecting column 230, a fixing column 260 is fixed to the bottom end of the connecting plate 220, a hook 270 is fixed to the end of the fixing column 260 away from the connecting plate 220, an arc-shaped piston cavity 271 is provided inside the hook 270, a return spring 273 is fixed inside the arc-shaped piston cavity 271, a connecting block 272 is connected to the top of the return spring 273, a piston plate 280 is provided on the inner wall of the arc-shaped piston cavity 271 and is slidably connected thereto, and a limiting hook 281 is fixed to one end of the piston plate 280.

[0028] The protective mechanism 200 can be used to squeeze the connecting block 272 on the surface of the hook 270 through the cable when the cable is hooked, so that the oil inside the arc-shaped piston chamber 271 squeezes the piston plate 280 to drive the limiting hook 281 to protect the cable and prevent it from being unhooked. Then, the crane is connected to the hook connector 250, and the hook 270 is retracted back to the inner wall of the hook frame 100 by pulling the connecting column 230, so as to protect the cable again and avoid shaking of the goods during lifting, thereby protecting the goods and protecting the personal safety of public personnel.

[0029] Please refer to Figures 2 to 3 The sliding groove 130, the sliding block 210 and the hook 270 are symmetrically arranged according to the longitudinal center axis of the hook frame 100. A fixing plate 140 is fixed to the inner wall of the hook frame 100. A circular hole 141 is opened at the center position of the fixing plate 140, and the size of the circular hole 141 matches the size of the connecting column 230. The size of the bottom end of the hook frame 100 is larger than the size of the hook 270, and the hook 270 can be displaced inside it.

[0030] The sliding groove 130, the sliding block 210 and the hook 270 are all symmetrically arranged according to the longitudinal center axis of the hook frame 100 so as to slide. The circular hole 141 is provided for the connection column 230 to move, and the hook 270 can be retracted into the hook frame 100 for protection.

[0031] Please refer to Figures 2 to 3 A buffer spring 150 is fixed to the top of the connecting plate 220, and one end of the buffer spring 150 away from the connecting plate 220 is fixed to the bottom of the fixed plate 140. An auxiliary spring 160 is fixed to the top of the sliding block 210, and one end of the auxiliary spring 160 away from the sliding block 210 is fixed to the bottom of the sliding groove 130. A usage meter storage frame 110 is fixed to the front end surface of the hook frame 100, and a nameplate 120 fixed to the front end surface of the hook frame 100 is provided on one side of the usage meter storage frame 110.

[0032] The buffer spring 150 is arranged between the connecting plate 220 and the fixing plate 140 to buffer the cargo hoisted by the hook 270, and the auxiliary spring 160 provides auxiliary buffering. The usage record of the hook frame 100 can be recorded by the usage table storage frame 110 for the staff to check, and the nameplate 120 can be displayed.

[0033] When in use, the protective mechanism 200 can be used to squeeze the connecting block 272 on the surface of the hook 270 through the cable when the cable is hooked, so that the oil inside the arc-shaped piston chamber 271 squeezes the piston plate 280 to drive the limit hook 281 to protect the cable and prevent it from being unhooked. Subsequently, the crane is connected to the hook connector 250 and the hook 270 is retracted back to the inner wall of the hook frame 100 by pulling the connecting column 230, so that the cable is protected again to prevent the goods from shaking during lifting, thereby protecting the goods and protecting the personal safety of public personnel; the buffer spring 150 is arranged between the connecting plate 220 and the fixing plate 140, so as to buffer the goods hoisted by the hook 270, and the auxiliary spring 160 assists in buffering it, and the use table storage frame 110 can record the use record of the hook frame 100 for the staff to check, and the nameplate 120 can be used for display. The parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0034] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A crane hook protection device, comprising a hook frame (100), characterized in that: The inner wall of the hook frame (100) is provided with a sliding groove (130), and the inner wall of the sliding groove (130) is provided with a protective mechanism (200); The protection mechanism (200) comprises a sliding block (210) arranged on the inner wall of the sliding groove (130) and slidably connected thereto, a connecting plate (220) is fixed to one end of the sliding block (210) away from the sliding groove (130), a connecting column (230) is fixed to the top of the connecting plate (220), a connecting rod (240) is fixed to one end of the connecting column (230) away from the connecting plate (220), a hook connector (250) is fixed to one end of the connecting rod (240) away from the connecting column (230), and the connecting plate (22 0) is fixed at the bottom end thereof, a hook (270) is fixed at one end of the fixing column (260) away from the connecting plate (220), an arc-shaped piston cavity (271) is provided inside the hook (270), a return spring (273) is fixed inside the arc-shaped piston cavity (271), a connecting block (272) is connected to the top end of the return spring (273), a piston plate (280) is provided on the inner wall of the arc-shaped piston cavity (271) and is slidably connected thereto, and a limiting hook (281) is fixed at one end of the piston plate (280).

2. A crane hook protection device according to claim 1, characterized in that: The sliding groove (130), the sliding block (210) and the hook (270) are all symmetrically arranged according to the longitudinal center axis of the hook frame (100).

3. A crane hook protection device according to claim 1, characterized in that: A fixing plate (140) is fixed to the inner wall of the hook frame (100), and a circular hole (141) is provided at the center of the fixing plate (140), and the size of the circular hole (141) matches that of the connecting column (230).

4. A crane hook protection device according to claim 1, characterized in that: A buffer spring (150) is fixed to the top end of the connecting plate (220), and one end of the buffer spring (150) away from the connecting plate (220) is fixed to the bottom end of the fixing plate (140).

5. A crane hook protection device according to claim 1, characterized in that: An auxiliary spring (160) is fixed to the top of the sliding block (210), and one end of the auxiliary spring (160) away from the sliding block (210) is fixed to the bottom of the sliding groove (130).

6. A crane hook protection device according to claim 1, characterized in that: The size of the bottom end of the hook frame (100) is larger than the size of the hook (270), and the hook (270) can be displaced inside the hook frame (100).

7. A crane hook protection device according to claim 1, characterized in that: A usage meter storage frame (110) is fixed to the front end surface of the hook frame (100), and a nameplate (120) fixed to the front end surface of the hook frame (100) is provided on one side of the usage meter storage frame (110).

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