GIS in-place hoisting mechanism for narrow space

Abstract

The invention discloses a GIS in-place hoisting mechanism for a narrow space, and relates to the field of hoisting equipment, the GIS in-place hoisting mechanism comprises a crane main body and spider legs, the top of the crane main body is rotatably provided with a rotating disc, the top of the rotating disc is provided with a fixed seat, and a bidirectional screw is arranged in a groove in the top of the fixed seat; and a driving mechanism is mounted at the top of the rotating disc. According to the invention, the hydraulic cylinder is matched with the rotation of the two-way screw rod, so that when the lifting hook of the lifting arm mechanism lifts equipment in a narrow space, the equipment can be transported from the back to the front without exiting from the narrow space, and an inclined lifting arm in the prior art is changed into a vertical lifting arm through the matching of the hydraulic cylinder and the two-way screw rod; the lifting arm in the vertical state plays a larger role in a narrow space, the lifting arm mechanism can still incline through stretching and retracting of the hydraulic cylinder, the function of an original lifting arm is played, and the use range of the lifting mechanism is effectively widened.

Description

Technical Field

[0001] The invention relates to the field of hoisting equipment, in particular to a GIS in-situ hoisting mechanism used in a narrow space. Background Art

[0002] With the development of the economy and society, land resources in urban center areas are becoming increasingly scarce. Integrated and miniaturized equipment has become the first choice for substation construction. Fully enclosed combined electrical appliances (GIS) have the advantages of small footprint, high reliability, and low maintenance workload. They are widely used in indoor power distribution devices. The installation process of GIS auxiliary components covers equipment placement, gas chamber docking, accessory installation, vacuum treatment, gas injection, SF6 gas recovery and other links. Since it integrates multiple electrical components and is relatively large in size, it brings certain difficulties to the overall transportation and installation of the equipment. For indoor GIS auxiliary components, due to the limited working space, conventional cranes cannot directly enter the site for operation.

[0003] At present, the hook installation method is widely used in projects. In the implementation of new projects, construction units usually use the "steel pipe + crowbar" method to complete the installation of the main equipment, and the accessories and busbars are completed with the help of the "hook + manpower" method.

[0004] However, the construction efficiency of this method is too low, so some construction units use indoor cranes for construction and use indoor cranes to transport equipment to the installation location. However, for some narrow alleys, the boom of the indoor crane cannot rotate directly. When lifting the equipment, it is necessary to first exit the alley, hook the equipment, and then turn the boom, which is time-consuming and labor-intensive. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a GIS in-place hoisting mechanism for a narrow space, so as to solve the technical problem that the existing indoor crane needs to exit the alley first, hook the equipment and then turn the boom when hoisting the equipment, which is time-consuming and labor-intensive.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a GIS in-place hoisting mechanism for a narrow space, comprising a crane body and spider legs, a rotating disk rotatably installed on the top of the crane body, a fixed seat installed on the top of the rotating disk, a bidirectional screw rod arranged inside the groove on the top of the fixed seat, a driving mechanism installed on the top of the rotating disk, an output end of the driving mechanism is connected to the bidirectional screw rod, a group of hydraulic cylinders are threadedly connected to the outer wall of the bidirectional screw rod, the output end of each of the hydraulic cylinders is connected to a boom mechanism, and a hook is arranged at one end of the boom mechanism.

[0007] The present invention is further configured such that a rotating seat is rotatably provided on the top of the fixed seat, and a hanging arm mechanism is provided on the top of the rotating seat.

[0008] The present invention is further configured as follows: the boom mechanism includes a first arm, a second arm, a third arm and a mounting block; the first arm is rotatably arranged at the top of a rotating seat; the second arm is rotatably arranged at one end of the first arm; the third arm is rotatably arranged at one end of the second arm; the two sets of boom mechanisms are mirror-imaged at the top of the rotating seat, and one end of the third arm of the two sets of boom mechanisms are connected via a mounting block.

[0009] The present invention is further configured such that a hook is provided on one side of the mounting block, a winding roller is installed on the top of the crane body, a steel cable is connected to the outer wall of the winding roller, and one end of the steel cable is connected to the hook.

[0010] The present invention is further configured such that the first arm, the second arm, the third arm and the outer wall of the mounting block are all provided with guide wheels, and the steel cable is guided by the guide wheels.

[0011] The present invention is further configured such that both the fixed end and the movable end of the hydraulic cylinder are provided with movable seats, a rotating column is rotatably provided inside the first support arm, the movable end of the hydraulic cylinder is rotatably connected to the rotating column via the movable seat, and the fixed end of the hydraulic cylinder is rotatably connected to the bidirectional screw via the movable seat.

[0012] The present invention is further configured such that a positioning block is provided on the outer wall of the second arm, the second arm is limited at ninety degrees to the first arm by the positioning block, and the second arm is fixed to the first arm by a fixing bolt passing through the positioning block.

[0013] The present invention is further configured such that the driving mechanism is a motor, and the output end of the motor is connected to the bidirectional screw.

[0014] To sum up, the present invention mainly has the following beneficial effects: the present invention realizes that when the hook of the boom mechanism lifts the equipment in a narrow space, it does not need to withdraw from the narrow space to transport the equipment from the back to the front, through the rotation of the hydraulic cylinder and the bidirectional screw. The inclined boom in the prior art is converted into a vertical boom through the cooperation of the hydraulic cylinder and the bidirectional screw. The boom in the vertical state can play a greater role in a narrow space, and the boom mechanism can still be tilted through the extension and retraction of the hydraulic cylinder, so that the function of the original boom is brought into play, which effectively increases the scope of use of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the boom mechanism of the present invention in a frame-shaped state;

[0016] Figure 2 It is a schematic diagram of the overall structure of the boom mechanism of the present invention in a vertical state;

[0017] Figure 3It is a schematic structural diagram of the frame-type boom mechanism of the present invention from a first viewing angle;

[0018] Figure 4 It is a second perspective structural schematic diagram of the frame-type suspension arm mechanism of the present invention;

[0019] Figure 5 It is a structural schematic diagram of the vertical state boom mechanism of the present invention;

[0020] Figure 6 For the present invention Figure 3 A magnified view of the structure at A.

[0021] In the figure: 1. Crane body; 2. Spider legs; 3. Rotating disk; 4. Fixed seat; 5. First arm; 6. Second arm; 7. Third arm; 8. Mounting block; 9. Hook; 10. Hydraulic cylinder; 11. Bidirectional screw; 12. Motor; 13. Rotating column; 14. Movable seat; 15. Winding roller; 16. Steel cable; 17. Guide wheel; 18. Fixing bolt; 19. Rotating seat. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] A GIS installation and hoisting mechanism for use in a narrow space, such as Figure 1-6 As shown, it includes a crane body 1 and spider legs 2. The crane body 1 moves by means of crawler control. After reaching the lifting position, the spider legs 2 are unfolded to fix the position of the crane body 1. For indoor equipment that is not particularly heavy, a lifting mechanism can be used for lifting. A boom mechanism is installed on the crane body 1. The boom mechanism includes a first arm 5, a second arm 6, a third arm 7 and a mounting block 8. The first arm 5 is rotatably arranged on the top of the rotating seat 19, the second arm 6 is rotatably arranged at one end of the first arm 5, and the third arm 7 is rotatably arranged at one end of the second arm 6. The two sets of boom mechanisms are mirror-imaged on the top of the rotating seat 19, and one end of the third arm 7 of the two sets of boom mechanisms is connected via a mounting block 8.

[0024] A rotating disk 3 is rotatably installed on the top of the crane body 1, a fixed seat 4 is installed on the top of the rotating disk 3, a bidirectional screw 11 is arranged inside the groove on the top of the fixed seat 4, a driving mechanism is installed on the top of the rotating disk 3, the output end of the driving mechanism is connected to the bidirectional screw 11, the driving mechanism is a motor 12, the output end of the motor 12 is connected to the bidirectional screw 11, a group of hydraulic cylinders 10 are threadedly connected to the outer wall of the bidirectional screw 11, the output end of each hydraulic cylinder 10 is connected to a boom mechanism, one end of the boom mechanism is provided with a hook 9, after entering a narrow space, the initial In the initial state, the hydraulic cylinder 10 contracts and is located on both sides of the bidirectional screw 11. At this time, the first arm 5, the second arm 6, and the third arm 7 form a frame structure. The rotating mechanism at the bottom of the rotating disk 3 controls the rotation of the rotating disk 3 to turn the entire boom mechanism to the rear, that is, the hook 9 faces the rear. At this time, the equipment can be hoisted onto the hook 9, and then the rotating mechanism rotates in the opposite direction to control the rotating disk 3 to return to its original position, thereby realizing the action of the boom mechanism hoisting the equipment located behind the crane body 1 to the front in a narrow space, without exiting the narrow space.

[0025] When the equipment behind the crane body 1 is hoisted to the front, it is prepared to lift the equipment completely. At this time, the hydraulic cylinder 10 and the bidirectional screw 11 are started. While the hydraulic cylinder 10 pushes the first arm 5 to flip upward, the two hydraulic cylinders 10 also approach each other, and the second arm 6 is also pushed upward. Moreover, since the third arm 7 is in an upward arched state when it cooperates with the mounting block 8 to form a frame structure, when the first arm 5 and the second arm 6 are pushed upward, the third arm 7 will also be pushed upward, until the first arm 5, the second arm 6, and the third arm 7 are in the same straight line and in a vertical state. At this time, the equipment on the hook 9 also rises.

[0026] Furthermore, after the equipment on the hook 9 rises, the equipment cannot directly approach the installation position. A rotating seat 19 is rotatably provided on the top of the fixed seat 4, and the boom mechanism is arranged on the top of the rotating seat 19. By extending the hydraulic cylinder 10 on one side and contracting the hydraulic cylinder 10 on the other side, the rotating seat 19 can be effectively deflected to one side, forming an inclined boom similar to a traditional crane, thereby realizing corresponding lifting work.

[0027] At the same time, the fixed end and the movable end of the hydraulic cylinder 10 are both provided with a movable seat 14, and the internal rotation of the first arm 5 is provided with a rotating column 13. The movable end of the hydraulic cylinder 10 is rotatably connected to the rotating column 13 through the movable seat 14, and the fixed end of the hydraulic cylinder 10 is rotatably connected to the bidirectional screw 11 through the movable seat 14. The movable seat 14 and the rotating column 13 can effectively ensure that the hydraulic cylinder 10 will not be stuck during extension and retraction, and cooperate with the rotation of the bidirectional screw 11 to effectively realize the action of the hydraulic cylinder 10 extending and retracting while moving laterally.

[0028] A hook 9 is provided on one side of the mounting block 8, and a winding roller 15 is installed on the top of the crane body 1. The outer wall of the winding roller 15 is connected with a steel cable 16, and one end of the steel cable 16 is connected to the hook 9. The first arm 5, the second arm 6, the third arm 7 and the outer wall of the mounting block 8 are all provided with guide wheels 17, and the steel cable 16 is guided by the guide wheels 17. The control mechanism controls the winding and unwinding of the winding roller 15, and can control the extension and retraction of the steel cable 16, thereby realizing the lifting and lowering of the equipment.

[0029] Furthermore, a positioning block is provided on the outer wall of the second arm 6, and the second arm 6 limits the second arm 6 and the first arm 5 at ninety degrees through the positioning block, and the second arm 6 is fixed to the first arm 5 through the positioning block by the fixing bolt 18. When the boom mechanism is a frame-type structure, the positioning block plays a role of limiting the position at ninety degrees, and the entire boom is fixed by the fixing bolt 18. When the boom mechanism is ready to be deformed, the fixing bolt 18 is first removed, and then the subsequent deformation work is carried out. After the deformation is completed, the fixing bolt 18 fixes the second arm 6 and the first arm 5 again, so that the two remain in a vertical state, which is convenient for subsequent lifting work.

[0030] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. 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 present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A GIS installation hoisting mechanism for a narrow space, comprising a hoist body (1) and spider legs (2), characterized in that: A rotating disk (3) is rotatably mounted on the top of the crane body (1), a fixed seat (4) is mounted on the top of the rotating disk (3), a bidirectional screw (11) is arranged inside the groove at the top of the fixed seat (4), a driving mechanism is mounted on the top of the rotating disk (3), an output end of the driving mechanism is connected to the bidirectional screw (11), a group of hydraulic cylinders (10) are threadedly connected to the outer wall of the bidirectional screw (11), the output end of each of the hydraulic cylinders (10) is connected to a boom mechanism, and a hook (9) is arranged at one end of the boom mechanism.

2. The GIS installation and hoisting mechanism for a narrow space according to claim 1 is characterized in that: A rotating seat (19) is rotatably provided on the top of the fixed seat (4), and a hanging arm mechanism is provided on the top of the rotating seat (19).

3. The GIS installation and hoisting mechanism for a narrow space according to claim 2 is characterized in that: The boom mechanism comprises a first arm (5), a second arm (6), a third arm (7) and a mounting block (8); the first arm (5) is rotatably arranged at the top of a rotating seat (19); the second arm (6) is rotatably arranged at one end of the first arm (5); the third arm (7) is rotatably arranged at one end of the second arm (6); the two sets of boom mechanisms are mirror-imaged at the top of the rotating seat (19), and one end of the third arm (7) of the two sets of boom mechanisms is connected via the mounting block (8).

4. The GIS installation and hoisting mechanism for a narrow space according to claim 3 is characterized by: A hook (9) is provided on one side of the mounting block (8), a winding roller (15) is installed on the top of the crane body (1), the outer wall of the winding roller (15) is connected to a steel cable (16), and one end of the steel cable (16) is connected to the hook (9).

5. The GIS installation and hoisting mechanism for a narrow space according to claim 4 is characterized in that: The outer walls of the first arm (5), the second arm (6), the third arm (7) and the mounting block (8) are all provided with guide wheels (17), and the steel cable (16) is guided by the guide wheels (17).

6. The GIS installation and hoisting mechanism for a narrow space according to claim 3 is characterized by: Both the fixed end and the movable end of the hydraulic cylinder (10) are provided with a movable seat (14); a rotating column (13) is rotatably provided inside the first support arm (5); the movable end of the hydraulic cylinder (10) is rotatably connected to the rotating column (13) via the movable seat (14); and the fixed end of the hydraulic cylinder (10) is rotatably connected to the bidirectional screw (11) via the movable seat (14).

7. The GIS installation and hoisting mechanism for a narrow space according to claim 3 is characterized by: The outer wall of the second support arm (6) is provided with a positioning block, and the second support arm (6) is limited by the positioning block to be 90 degrees with the first support arm (5), and the second support arm (6) is fixed to the first support arm (5) by a fixing bolt (18) passing through the positioning block.

8. The GIS installation and hoisting mechanism for a narrow space according to claim 1 is characterized in that: The driving mechanism is a motor (12), and the output end of the motor (12) is connected to the bidirectional screw (11).

Images