Auxiliary device for crane maintenance

Abstract

The utility model discloses an auxiliary device for crane maintenance, and belongs to the technical field of cranes. The auxiliary device for crane maintenance comprises a rack, a driving mechanism, a lifting rope, a pulley mechanism and a clamping assembly, the rack comprises a base and a portal frame, the driving mechanism is installed at one end of the base, and the portal frame is arranged at the end, away from the driving mechanism, of the rack and can rotate towards the side away from the driving mechanism; the pulley mechanism is installed on the portal frame, after the lifting rope bypasses the pulley mechanism, one end of the lifting rope is connected with the driving mechanism, and the other end of the lifting rope is connected with the clamping assembly; the machine frame has the advantages of being more reasonable in structure and wider in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an auxiliary device for crane maintenance. Background Art

[0002] A crane is a kind of auxiliary lifting equipment widely used in large factories and heavy industry enterprises. Usually, because the crane equipment is used to lift large objects, the equipment in the crane is heavy, but the mutual connection and transmission of its components are relatively precise. Generally, when disassembling and assembling the crane equipment, a lifting tool is usually used to disassemble the parts to be repaired one by one to facilitate maintenance.

[0003] In the utility model with the publication number of CN217264420U, a lifting tool for crane maintenance is disclosed, including: a frame device; a support component is slidably installed at the lower end of the frame device, a connection component is arranged at the top of the frame device, a tightening component is connected to the lower end of the connection component, and an auxiliary component and a clamping component are arranged at the end of the tightening component. First, a support component is added to the overall frame device of the equipment to enhance the auxiliary support effect on the frame device. The lifting part on the frame device is composed of three tightening components arranged in a circumferential array. Each tightening component is connected to the auxiliary component through a parallelogram mechanism, so that the equipment has an effective contraction and clamping effect through the tightening component during lifting, solving the problems that the clamping fixture of the existing lifting equipment is difficult to effectively clamp parts and is also difficult to stably clamp special-shaped parts, resulting in damage to parts during lifting.

[0004] However, the clamping component in the above solution is installed on the vertical lifting frame through a cross arm. This structure is prone to force deformation of the cross arm during lifting, and its stability is average and needs to be improved. The present application proposes an auxiliary device for crane maintenance. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the stability of the lifting structure of the lifting tool for crane maintenance in the prior art needs to be improved, and an auxiliary device for crane maintenance is proposed.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An auxiliary device for crane maintenance includes a frame, a driving mechanism, a lifting rope, a pulley mechanism, and a clamping component. The frame includes a base and a gantry. One end of the base is installed with the driving mechanism. The gantry is rotatably arranged at one end of the frame away from the driving mechanism and can rotate away from the driving mechanism. The pulley mechanism is installed on the gantry. After the lifting rope bypasses the pulley mechanism, one end is connected to the driving mechanism, and the other end is connected to the clamping component.

[0008] Further, the gantry includes vertical beams and a cross beam. The bottom ends of the two vertical beams are rotatably connected to the base, the top ends of the vertical beams are connected to both ends of the cross beam, and the pulley mechanism is installed on the cross beam.

[0009] Further, the driving mechanism includes a winch and a hydraulic cylinder. The winch and the hydraulic cylinder are both installed on the base. The winch is connected to one end of the lifting rope. A hydraulic station for driving the hydraulic cylinder is arranged on one side of the winch. Both ends of the hydraulic cylinder are hinged to the base and the gantry respectively.

[0010] Further, the pulley mechanism includes a main pulley and an anti-deviation pulley. The main pulley and the anti-deviation pulley are both rotatably installed on the frame. The grooves of the main pulley and the anti-deviation pulley are aligned, and the lifting rope passes around the main pulley.

[0011] Further, a hook is arranged between the lifting rope and the clamping assembly. The hook includes a movable pulley arranged at the top and a hook arranged at the bottom. One end of the lifting rope away from the driving mechanism passes around the movable pulley and then is connected to the frame. The clamping assembly is detachably connected to the hook.

[0012] Further, an auxiliary pulley is arranged on one side of the frame away from the driving mechanism. The groove of the auxiliary pulley is aligned with the groove of the main pulley. One end of the lifting rope away from the driving mechanism is fixedly wound on the auxiliary pulley.

[0013] Further, the auxiliary pulley is located at the upper left of the anti-deviation pulley, and the auxiliary pulley is rotatably installed on the cross beam.

[0014] Further, an electric control box is arranged on one side of the winch away from the hydraulic station, and the electric control box is installed on the base.

[0015] Further, a counterweight structure is arranged between the base and the winch, the hydraulic station, and the electric control box. The counterweight structure includes a counterweight block fixedly installed on the base. A shock pad is arranged on the top of the counterweight block. The winch, the hydraulic station, and the electric control box are fixedly installed on the shock pad.

[0016] Compared with the prior art, the present utility model provides an auxiliary device for crane maintenance, which has the following beneficial effects:

[0017] The auxiliary device for the maintenance of the crane of the present utility model, when in use, clamps the fitting to be maintained through the clamping assembly, starts the driving mechanism to hoist the lifting rope around the pulley mechanism and then hoists the fitting. The weight of the fitting is mainly transmitted to the gantry through the lifting rope, and then from the gantry to the ground through the base. At the same time, the driving mechanism also serves as a counterweight to improve the stability of the frame, making the force more reasonable and preventing tipping. And when the fitting cannot be directly hoisted inside the gantry, the gantry can also be rotated a certain angle towards the side away from the driving mechanism, so that the gantry approaches the direction where the fitting is located, and then the fitting is hoisted, with a wider range of applicable scenarios.

[0018] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent specification; and to some extent, based on the study of the following text, it will be obvious to those skilled in the art; or, it can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the right front view of the overall structure of the present utility model;

[0020] Figure 2 of the present utility model Figure 1 Enlarged schematic diagram of the structure of part A;

[0021] Figure 3 Schematic diagram of the front view of the overall structure of the present utility model;

[0022] Figure 4 Schematic diagram of the left front top view of the overall structure of the present utility model;

[0023] Figure 5 of the present utility model Figure 4 Enlarged schematic diagram of the structure of part B;

[0024] Figure 6 Schematic diagram of the left front bottom view of the overall structure of the present utility model;

[0025] Figure 7 of the present utility model Figure 6 Enlarged schematic diagram of the structure of part C;

[0026] Figure 8 Schematic diagram of the right side view of the overall structure of the present utility model.

[0027] In the figure:

[0028] 1. Frame; 101. Base; 102. Vertical beam; 103. Cross beam; 104. Counterweight; 105. Shock pad; 2. Driving mechanism; 201. Winch; 202. Hydraulic station; 203. Hydraulic cylinder; 3. Suspension rope; 4. Pulley mechanism; 401. Main pulley; 402. Anti-deviation pulley; 403. Auxiliary pulley; 404. First bracket; 405. Second bracket; 5. Clamping assembly; 6. Electric control box; 7. Hook. Detailed implementation mode

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Refer to Figure 1-8 , the auxiliary device for crane maintenance of the present invention includes a frame 1, a driving mechanism 2, a suspension rope 3, a pulley mechanism 4, and a clamping assembly 5. The frame 1 includes a base 101 and a gantry. The base 101 is a U-shaped frame, and a driving mechanism 2 is installed at one end of the base 101 far away from the opening. The driving mechanism 2 also has a counterweight effect here.

[0031] One end (the opening end) of the frame 1 far away from the driving mechanism 2 is rotatably installed with a gantry. A pulley mechanism 4 is installed on the gantry. After the suspension rope 3 bypasses the pulley mechanism 4, one end is connected to the driving mechanism 2, and the other end is connected to the clamping assembly 5. When in use, the clamping assembly 5 is used to clamp the parts to be repaired, and the driving mechanism 2 lifts the clamping assembly 5 and the parts through the suspension rope.

[0032] When the parts cannot be lifted from below the gantry in the working scenario, the gantry can be rotated a certain angle to the side away from the driving mechanism 2, so that the gantry tilts to the left. At the same time, the clamping assembly 5 is located above the parts, and then the lifting operation is carried out.

[0033] The clamping assembly 5 in this application has the same structure and function as the clamping assembly in the utility model with the publication number CN217264420U, and will not be elaborated here.

[0034] The gantry includes a vertical beam 102 and a cross beam 103. The bottom ends of the two vertical beams 102 are rotatably connected to the base 101. In the initial state, the vertical beam 102 and the base 101 are perpendicular to each other. The top ends of the vertical beams 102 are fixedly connected to both ends of the cross beam 103. The pulley mechanism 4 is rotatably installed at the middle position of the cross beam 103.

[0035] When using this device to lift the parts, the gravity of the parts is mainly transmitted from the suspension rope 3, the pulley mechanism 4, and the gantry to the base 101, and then to the ground. The force is more reasonable, and the overall stability of the frame 1 is higher.

[0036] The driving mechanism 2 includes a winch 201 and a hydraulic cylinder 203. The winch 201 and the hydraulic cylinder 203 are both installed on the base 101. The winch 201 includes a driving motor and a drum. The driving motor drives the drum to rotate. One end of the lifting rope 3 is fixedly connected to the drum. A hydraulic station 202 for driving the hydraulic cylinder 203 is installed on one side of the winch 201. Both ends of the hydraulic cylinder 203 are hinged to the base 101 and the gantry respectively. When the gantry needs to be rotated, the hydraulic cylinder 203 is adjusted to extend, driving the gantry to rotate to the left.

[0037] When the hydraulic cylinder 203 is fully retracted, it is in the initial state, corresponding to the initial state of the gantry, and is used to maintain the stability of the initial state of the gantry.

[0038] The rotation range of the gantry is 0 - 30 degrees. When the hydraulic cylinder 203 extends to the maximum stroke, the gantry rotates to 30 degrees.

[0039] The pulley mechanism 4 includes a main pulley 401 and an anti - deviation pulley 402. The main pulley 401 and the anti - deviation pulley 402 are both rotatably installed on the frame 1. The grooves of the main pulley 401 and the anti - deviation pulley 402 are aligned. The lifting rope 3 bypasses the main pulley 401, and the bottom end of the anti - deviation pulley 402 is in rolling connection with the top end of the main pulley 401. When the lifting rope drives the main pulley 401 to rotate, the anti - deviation pulley 402 slides synchronously with the main pulley 401, preventing the lifting rope 3 from detaching from the groove of the main pulley 401 and further improving the stability.

[0040] A hook 7 is installed between the lifting rope 3 and the clamping assembly 5. The hook 7 includes a movable pulley at the top and a hook at the bottom. One end of the lifting rope 3 away from the driving mechanism 2 bypasses the movable pulley and is connected to the frame 1. The clamping assembly 5 is detachably connected to the hook. As described in the cited document, the clamping assembly 5 includes a connecting cylinder. In this application, a lifting ring is fixedly connected to the top of the connecting cylinder. The clamping assembly 5 is hung inside the hook. According to the situation at the maintenance site, when it is necessary to use the clamping assembly 5 to clamp and lift the fitting, the clamping assembly 5 is hung on the hook 7. When it is necessary to use the hook 7 in cooperation with a sling to lift the fitting, the clamping assembly 5 can be conveniently disassembled, and the hook 7 is used for lifting, improving the practicability.

[0041] An auxiliary pulley 403 is rotatably installed on one side of the frame 1 away from the driving mechanism 2. The groove of the auxiliary pulley 403 is aligned with the groove of the main pulley 401. One end of the lifting rope 3 away from the driving mechanism 2 is fixedly wound around the auxiliary pulley 403. The lifting rope 3, the auxiliary pulley 403, the movable pulley of the hook 7, and the main pulley 401 form a force - saving lever structure, reducing the power requirement for the winch 201.

[0042] The pulley mechanism 4 further includes a first bracket 404 and a second bracket 405. The first bracket 404 is vertically installed at the top of the frame 1. The anti-deviation pulley 402 is rotatably installed between two first brackets 404. The second bracket 405 is obliquely installed on the frame 1. The auxiliary pulley 403 is rotatably installed between two second brackets 405. The included angle between the second bracket 405 and the first bracket 404 is 45 degrees. The auxiliary pulley 403 is located at the upper left of the anti-deviation pulley 402. The auxiliary pulley 403 is rotatably installed on the cross beam 103.

[0043] When the gantry rotates to the left, the hook 7 and the clamping assembly 5 also rotate to the left and are located at the middle position between the auxiliary pulley 403 and the main pulley 401. At the same time, the horizontal left-right distance between the tangent position when the lifting rope 3 winds from the hook 7 to the main pulley 401 and the connection position of the lifting rope 3 and the auxiliary pulley 403 gradually increases, which can effectively prevent the upper parts of the lifting ropes 3 on both sides of the hook 7 from gradually approaching and getting entangled after the gantry tilts, improving safety.

[0044] An electric control box 6 is fixedly installed on the side of the winch 201 away from the hydraulic station 202. The electric control box 6 is installed on the base 101 to distribute power to the winch 201 and the hydraulic station 202, and at the same time, it also has a counterweight effect.

[0045] A counterweight structure is installed between the base 101, the winch 201, the hydraulic station 202, and the electric control box 6. The counterweight structure includes a counterweight block 104 fixedly installed on the base 101. A shock pad 105 is fixedly installed on the top of the counterweight block 104. The winch 201, the hydraulic station 202, and the electric control box 6 are fixedly installed on the shock pad 105. The counterweight block 104 can be selected as a cement-reinforced block, and the shock pad 105 can be selected as a sleeper or a thick rubber pad to reduce the impact of the vibration of the winch 201 during operation on the hydraulic station 202 and the electric control box 6.

[0046] In this application, rollers and hydraulic legs can also be installed at the bottom of the base 101. The hydraulic legs are driven by the hydraulic station 202. The device is moved by the rollers. After moving to the predetermined position, the hydraulic legs are controlled to extend downward to support the base 101 to keep it stable.

[0047] Working principle: During use, the device is moved to the maintenance area. The clamping assembly 5 is used to clamp the parts to be repaired, or the hook 7 is used to lift the sling tied to the parts. The winch 201 is controlled to wind up the lifting rope 3. The lifting rope 3 bypasses the main pulley 401 to drive the hook 7 to rise, further driving the parts to rise. Then, the hydraulic cylinder 203 is controlled to extend to drive the parts to move to other areas for maintenance;

[0048] When the gantry needs to be rotated, control the hydraulic cylinder 203 to extend, driving the gantry to rotate to the left, so that the hook 7 is located directly above the fitting. Then use the clamping assembly 5 or the hook 7 to lift the fitting, and then control the hydraulic cylinder 203 to retract, driving the fitting to move to the area near the lower part of the gantry for maintenance.

[0049] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0050] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An auxiliary device for crane maintenance, comprising a frame (1), a driving mechanism (2), a lifting rope (3), a pulley mechanism (4), and a clamping assembly (5), characterized in that, The frame (1) includes a base (101) and a gantry. One end of the base (101) is installed with the driving mechanism (2). The gantry is rotatably arranged at one end of the frame (1) far from the driving mechanism (2) and can rotate away from the driving mechanism (2). The pulley mechanism (4) is installed on the gantry. After the lifting rope (3) bypasses the pulley mechanism (4), one end is connected to the driving mechanism (2), and the other end is connected to the clamping assembly (5).

2. The auxiliary device for crane maintenance according to claim 1, characterized in that, The gantry includes vertical beams (102) and a cross beam (103). The bottom ends of the two vertical beams (102) are rotatably connected to the base (101). The top ends of the vertical beams (102) are connected to both ends of the cross beam (103). The pulley mechanism (4) is installed on the cross beam (103).

3. The auxiliary device for crane maintenance according to claim 1, characterized in that, The driving mechanism (2) includes a winch (201) and a hydraulic cylinder (203). The winch (201) and the hydraulic cylinder (203) are both installed on the base (101). The winch (201) is connected to one end of the lifting rope (3). A hydraulic station (202) for driving the hydraulic cylinder (203) is arranged on one side of the winch (201). Both ends of the hydraulic cylinder (203) are hinged to the base (101) and the gantry respectively.

4. The auxiliary device for crane maintenance according to claim 1, characterized in that, The pulley mechanism (4) includes a main pulley (401) and an anti-deviation pulley (402). The main pulley (401) and the anti-deviation pulley (402) are both rotatably installed on the frame (1). The grooves of the main pulley (401) and the anti-deviation pulley (402) are aligned. The lifting rope (3) bypasses the main pulley (401).

5. The auxiliary device for crane maintenance according to claim 4, wherein, A hook (7) is arranged between the lifting rope (3) and the clamping assembly (5). The hook (7) includes a movable pulley arranged at the top and a hook arranged at the bottom. One end of the lifting rope (3) far from the driving mechanism (2) bypasses the movable pulley and is connected to the frame (1). The clamping assembly (5) is detachably connected to the hook.

6. The auxiliary device for crane maintenance according to claim 5, wherein, An auxiliary pulley (403) is arranged on one side of the frame (1) far from the driving mechanism (2). The groove of the auxiliary pulley (403) is aligned with the groove of the main pulley (401). One end of the lifting rope (3) far from the driving mechanism (2) is fixedly wound on the auxiliary pulley (403).

7. The auxiliary device for crane maintenance according to claim 6, characterized in that, The auxiliary pulley (403) is located at the upper left of the anti-deviation pulley (402). The auxiliary pulley (403) is rotatably installed on the cross beam (103).

8. The auxiliary device for crane maintenance according to claim 3, characterized in that, An electric control box (6) is arranged on one side of the winch (201) far from the hydraulic station (202). The electric control box (6) is installed on the base (101).

9. The auxiliary device for crane maintenance according to claim 8, characterized in that A counterweight structure is arranged between the base (101) and the winch (201), the hydraulic station (202), and the electric control box (6). The counterweight structure includes a counterweight block (104) fixedly installed on the base (101). A shock pad (105) is arranged on the top of the counterweight block (104). The winch (201), the hydraulic station (202), and the electric control box (6) are fixedly installed on the shock pad (105).

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