Lifting device

Abstract

The invention relates to a lifting device. The hoisting device comprises a cart, a hoisting rope, a winching mechanism and a hoop mechanism, the hoisting rope is used for being connected with a heavy object to be hoisted, the winching mechanism is arranged on the cart, and the winching mechanism is used for winding or releasing the hoisting rope. The hoop mechanism is connected with the cart and used for being hooped on a stand column in the field. According to the hoisting device, the winching mechanism can be easily conveyed to a suitable site through the cart, carrying labor force is saved, and compared with a traditional large crane, the structure is lighter and more flexible, the occupied space is small, and the hoisting device is more suitable for the narrow environment in a power transformation station. And the hoop mechanism is hooped on the upright post in the field, so that the cart can be stably fixed, the cart is prevented from displacing or toppling over in the hoisting process, and the safety is improved. The hoisting rope is automatically wound or released by utilizing the winching mechanism, so that the physical power of workers is saved, the hoisting efficiency is improved, the bearing capacity is also greatly improved, and the hoisting device is more suitable for hoisting work of various heavy objects in a power transformation station.

Description

Technical Field

[0001] The present application relates to the technical field of electric power construction tools, and in particular to a lifting device. Background Art

[0002] In the daily maintenance of substations, the replacement and maintenance of primary equipment such as lightning arresters, post insulators and voltage transformers are often limited by objective conditions such as small working space and live operation of surrounding equipment. It is often necessary to use lifting devices to lower and lift them.

[0003] At present, the lifting devices of equipment in substations mostly use cranes or hand winches. However, crane operations also require a number of protective measures to avoid safety hazards to surrounding live equipment, which undoubtedly increases the requirements for working space and increases the complexity and risk of operations. Hand winches have low working efficiency and are completely dependent on manual operation. The labor intensity and speed are high during the operation, especially in tasks that require repeated lifting. Workers are more tired. In addition, the load-bearing capacity of hand winches is limited, and it is difficult to meet the lifting needs of large equipment, which makes them incapable of actual use in substations. Summary of the invention

[0004] Based on this, it is necessary to provide a lifting device that is easy to operate, labor-saving, and occupies a small space, so as to solve the problem that traditional lifting devices are not suitable for lifting heavy objects in substations.

[0005] The present application provides a lifting device, comprising:

[0006] Cart;

[0007] A lifting rope, the lifting rope is used to connect the heavy object to be lifted;

[0008] a capstan mechanism, the capstan mechanism being disposed on the cart and being used for winding up or releasing the lifting rope; and

[0009] A clamp mechanism is connected to the cart and is used for clamping the cart on a column in the field.

[0010] The technical solution is further described below:

[0011] In one embodiment, the cart comprises:

[0012] A base, wherein the base is connected with a universal wheel;

[0013] A hand support frame, the hand support frame is connected to the base, and the clamp mechanism is fixed on the hand support frame;

[0014] A support frame is connected to the hand support frame, and the capstan mechanism is arranged on the support frame.

[0015] In one embodiment, the cart further includes a lifting mechanism, wherein the lifting mechanism is connected to the support frame, and the lifting mechanism is used to drive the support frame to rise and fall along the height direction of the handrail.

[0016] In one embodiment, the capstan mechanism comprises:

[0017] a mounting frame, the mounting frame being fixed to the cart;

[0018] A reel, the reel is rotatably disposed on the mounting frame, and the reel is used to reel in or release the lifting rope;

[0019] A driving member, wherein the driving member is arranged on the mounting frame, and an output shaft of the driving member is connected to the reel, and the driving member is used for driving the reel to rotate.

[0020] In one embodiment, the capstan mechanism further includes an overload sensor, which is electrically connected to the drive member, and is used to stop the operation of the drive member when the weight of the heavy object to be hoisted exceeds a preset value; and / or a lifting ring is provided on the mounting frame.

[0021] In one embodiment, the clamp mechanism includes a holding strap, which is a semi-annular structure. Both ends of the holding strap are connected to the cart, and at least one end of the holding strap is detachably connected to the cart. At least one end of the holding strap is connected to a tightener, and the tightener is used to tighten or loosen the holding strap.

[0022] In one of the embodiments, an anti-slip member is provided on the inner side of the holding strap.

[0023] In one of the embodiments, the lifting device also includes a fixed pulley and a movable pulley, the fixed pulley is used to be fixed on a column in the field, the movable pulley is provided with a first hook for connecting the heavy object to be lifted, and the lifting rope is wound around the fixed pulley and the movable pulley.

[0024] In one of the embodiments, the lifting device further includes a fixing member, which is used to be detachably mounted on the column in the field, and the fixed pulley is provided with a second hook, which is hooked and connected to the fixing member.

[0025] In one embodiment, the lifting rope is an insulating rope.

[0026] The above-mentioned lifting device sets the capstan mechanism on a cart, so that the capstan mechanism can be easily transported to a suitable site by using the cart, saving the labor of transportation. Compared with the traditional large crane, the structure of the lifting device of the present application installing the capstan mechanism on the cart is more lightweight and flexible, occupies less space, and is more suitable for the narrow environment in the substation. At the same time, by setting a clamping mechanism on the cart, the clamping mechanism is clamped on the column in the field, so that the cart can be stably fixed, and the displacement or tipping of the cart during the lifting process is avoided, thereby improving safety. Compared with the traditional lifting device that needs to be fixed by a temporary anchor, the lifting device of the present application is clamped on the column in the field by the clamping mechanism, eliminating the tedious operation of the temporary anchor, and the installation is more convenient and labor-saving and does not damage the site. In addition, compared with the traditional manual hoist, the lifting device of the present application uses the capstan mechanism to automatically reel or release the lifting rope, saving the physical strength of the workers, accelerating the lifting efficiency, and greatly improving the load-bearing capacity, which is more suitable for the lifting of various heavy objects in the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0030] FIG. 1 is a schematic structural diagram of a lifting device according to an embodiment.

[0031] FIG. 2 is a schematic diagram of the structure of the lifting device shown in FIG. 1 after the fixed pulley and the movable pulley are hidden.

[0032] FIG. 3 is a side view of the lifting device shown in FIG. 2 .

[0033] FIG. 4 is a rear view of the lifting device shown in FIG. 2 .

[0034] Description of reference numerals:

[0035] 10. Trolley; 11. Base; 12. Universal wheel; 13. Handrail; 131. Vertical pole; 132. Handle; 133. Cross plate; 14. Support frame; 20. Capstan mechanism; 21. Driving member; 22. Reel; 23. Mounting frame; 24. Lifting ring; 25. Lifting mechanism; 30. Hoop mechanism; 31. Holding belt; 32. Take-up device; 40. Lifting rope; 51. Fixed pulley; 52. Second hook; 61. Movable pulley; 62. First hook; 70. Fixing member. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0042] An embodiment of the present application provides a lifting device suitable for lifting primary equipment such as lightning arresters, post insulators and voltage transformers in a substation. It is understandable that the lifting device can also be used to lift other heavy objects in other scenarios, which is not limited here.

[0043] Specifically, referring to FIG1 , a lifting device of an embodiment includes a trolley 10, a lifting rope 40, a capstan mechanism 20, and a clamp mechanism 30, wherein the lifting rope 40 is used to connect the heavy object to be lifted, the capstan mechanism 20 is arranged on the trolley 10, and the capstan mechanism 20 is used to reel in or release the lifting rope 40. The clamp mechanism 30 is connected to the trolley 10, and the clamp mechanism 30 is used to clamp on the column in the field. The column in the field refers to the column located at the work site, such as the steel pipe column or cement column in the substation.

[0044] For example, in one embodiment, when it is necessary to hoist equipment in a substation, the capstan mechanism 20 is first transported to a suitable column in the work site by a trolley 10, and then the clamp mechanism 30 is clamped on the column to fix the trolley 10 and the capstan mechanism 20, and then the lifting rope 40 is passed around the pulley block or the beam and connected to the equipment to be hoisted, and finally the equipment to be hoisted can be lifted or lowered by winding or releasing the lifting rope 40 by the capstan mechanism 20.

[0045] The above-mentioned lifting device sets the capstan mechanism 20 on the cart 10, so that the capstan mechanism 20 can be easily transported to a suitable site by using the cart 10, saving the labor of transportation. Compared with the traditional large crane, the structure of the lifting device of the present application to install the capstan mechanism 20 on the cart 10 is more lightweight and flexible, occupies less space, and is more suitable for the narrow environment in the substation. At the same time, by setting a clamping mechanism 30 on the cart 10, the clamping mechanism is clamped on the column in the field, so that the cart 10 can be stably fixed, and the displacement or tipping of the cart 10 during the lifting process can be avoided, thereby improving safety. Compared with the traditional lifting device that needs to be fixed with a temporary anchor, the lifting device of the present application is clamped on the column in the field by the clamping mechanism, eliminating the tedious operation of the temporary anchor, and the installation is more convenient and labor-saving and does not damage the site. In addition, compared with traditional manual hoists, the lifting device of the present application uses a capstan mechanism 20 to automatically reel in or release the lifting rope 40, saving workers' physical strength, speeding up lifting efficiency, and greatly improving the load-bearing capacity, making it more suitable for lifting work of various equipment in substations.

[0046] Referring to Fig. 2, in one embodiment, the cart 10 includes a base 11, a hand frame 13 and a support frame 14, the base 11 is connected with a universal wheel 12, the hand frame 13 is connected to the base 11, the clamp mechanism 30 is fixed on the hand frame 13, the support frame 14 is connected to the hand frame 13, and the winch mechanism 20 is arranged on the support frame 14. Specifically, by arranging the universal wheel 12 on the base 11, it is ensured that the cart 10 can move in any direction, which is convenient for the cart 10 to shuttle in the substation with complex terrain. The hand frame 13 makes it convenient for workers to move the cart 10 by hand. Understandably, in other embodiments, the cart 10 can also be an AGV cart, so that the cart 10 can automatically cruise to the required position, further saving manpower.

[0047] In conjunction with FIG3 , optionally, in one embodiment, the cart 10 further includes a lifting mechanism 25, which is connected to the support frame 14 and is used to drive the support frame 14 to rise and fall along the height direction of the handrail 13. The lifting mechanism 25 is used to drive the support frame 14 to rise and fall, thereby driving the capstan mechanism 20 to rise and fall. On the one hand, the center of gravity of the lifting device can be flexibly adjusted according to the weight of the equipment to be hoisted to prevent the lifting device from tipping over. On the other hand, the lifting work of the heavy object to be hoisted can be accelerated. For example, when the weight of the heavy object to be hoisted is less than the dead weight of the lifting device, the lifting mechanism 25 can be used to drive the support frame 14 to descend to lower the center of gravity of the lifting device, thereby quickly completing the lifting of the equipment.

[0048] Specifically, referring to FIG. 4 , the handrail 13 includes a vertical pole 131 and a handle 132. The vertical pole 131 extends in the vertical direction, one end of the vertical pole 131 is connected to the base 11, and the other end is connected to the handle 132. The support frame 14 is movably mounted on the vertical pole 131, thereby improving the stability of the lifting movement of the support frame 14. Further, there are two vertical poles 131, and the two vertical poles 131 are arranged at intervals. The two ends of the support frame 14 are respectively connected to the two vertical poles 131. The handrail 13 also includes a horizontal plate 133, which is connected between the two vertical poles 131. The lifting mechanism 25 is arranged on the horizontal plate 133. Exemplarily, the lifting mechanism 25 can be a hydraulic cylinder or a pneumatic cylinder.

[0049] Referring to Figure 2, in one embodiment, the capstan mechanism 20 includes a mounting frame 23, a reel 22 and a driving member 21, wherein the mounting frame 23 is fixed on the cart 10, the reel 22 is rotatably disposed on the mounting frame 23, the reel 22 is used to reel in or release the lifting rope 40, the driving member 21 is disposed on the mounting frame 23, and the output shaft of the driving member 21 is connected to the reel 22, the driving member 21 is used to drive the reel 22 to rotate so that the reel 22 reels in or releases the lifting rope 40.

[0050] Specifically, the weight of a conventional capstan device is generally around 120 kg, which is difficult to carry and cannot meet the requirements of portability and flexibility in a substation. In addition, such capstan device equipment needs to be temporarily anchored during use. The capstan mechanism 20 of the present application has a simple structure, and the drive member 21 and the reel 22 are installed on the cart 10 through the mounting frame 23, which is easy to move and can meet the requirements of portability and flexibility in a substation. The capstan mechanism 20 can be fixed to a steel pipe column or a concrete column in the substation through a clamp mechanism 30, eliminating the need for temporary anchors.

[0051] Optionally, in one embodiment, the capstan mechanism 20 further includes an overload sensor, which is electrically connected to the driver 21. The overload sensor is used to stop the operation of the driver 21 when the weight to be hoisted exceeds a preset value, thereby preventing the driver 21 from being overloaded and damaged. Exemplarily, the driver 21 can be a motor. The overload sensor is disposed in the driver 21. When the overload sensor detects that the hoisting weight of the driver 21 exceeds the rated load capacity of the driver 21, the overload sensor can trigger a protection mechanism to stop the operation of the driver 21 to avoid damage or safety accidents.

[0052] Referring to the figure, a lifting ring 24 is provided on the mounting frame 23, and the lifting ring 24 is used for workers to grasp or for a shoulder pole to pass through in order to carry the lifting device. Specifically, on flat ground, the lifting device can be moved by the universal wheel 12. When encountering obstacles or uneven roads, the lifting device can be carried by the lifting ring 24 when it is difficult to move the cart 10.

[0053] Continuing to refer to FIG. 4 , optionally, in one embodiment, the clamp mechanism 30 includes a clamp belt 31, which is a semi-ring structure, both ends of the clamp belt 31 are connected to the cart 10, and at least one end of the clamp belt 31 is detachably connected to the cart 10. Exemplarily, the two ends of the clamp belt 31 are detachably connected to the two upright poles 131 of the handrail 13 of the cart 10. In this way, after the cart 10 is moved to the vicinity of the column in the field, one end of the clamp belt 31 is removed from the cart 10, passed around the column, and then reconnected to the cart 10, so that the clamp belt 31 hugs the column tightly, and the lifting device can be fixed on the column.

[0054] Furthermore, at least one end of the holding belt 31 is connected to a tightener 32, and the tightener 32 is used to tighten or loosen the holding belt 31. For example, in this embodiment, a tightener 32 is provided at each end of the tightener 32, so that the holding belt 31 can be tightened or loosened by the tightener 32, and the diameter range of the holding belt 31 can be adjusted, so that the holding belt 31 can be firmly fixed on columns of different diameters and materials, thereby improving the versatility of the lifting device. Exemplarily, the tightener 32 can be a tightener commonly used on the market, such as a ratchet tightener, etc., which is not limited here.

[0055] Optionally, in one embodiment, an anti-slip member (not shown) is provided on the inner side of the holding belt 31. The inner side of the holding belt 31 refers to the side of the holding belt 31 facing the cart 10. The anti-slip member includes but is not limited to a rubber cushion layer or a composite anti-slip material layer with a high friction coefficient, so as to increase the friction between the holding belt 31 and the column, and prevent the holding belt 31 from sliding or shifting during the lifting process. For columns with smoother surfaces, the fixing effect can be further enhanced by adding an anti-slip clamp or a positioning pin to the holding belt 31.

[0056] Furthermore, the clamp mechanism 30 and the support frame 14 are respectively connected to opposite sides of the handrail 13, so as to prevent the support frame 14 from interfering with the clamp mechanism 30 when performing lifting movement.

[0057] Referring to FIG1 , the lifting device further includes a fixed pulley 51 and a movable pulley 61. The fixed pulley 51 is used to be fixed on a column in the field. The movable pulley 61 is provided with a first hook 62 for connecting a heavy object to be hoisted. The lifting rope 40 is wound around the fixed pulley 51 and the movable pulley 61. Specifically, the fixed pulley 51 can change the force direction of the lifting rope 40, and the movable pulley 61 can save effort. The combination of the fixed pulley 51 and the movable pulley 61 can effectively improve the lifting efficiency of the lifting device. It can be understood that the winding method of the lifting rope 40 on the fixed pulley 51 and the movable pulley 61 can refer to the winding method of the existing pulley block, and is not limited here.

[0058] Continuing to refer to FIG. 1 , optionally, in one embodiment, the lifting device further includes a fixing member 70, which is used to be detachably mounted on a column in the field, wherein the column on which the fixing member 70 is mounted is another column different from the column clamped by the clamp mechanism 30. Further, the fixed pulley 51 is provided with a second hook 52, and the second hook 52 is connected to the fixing member 70. Specifically, the fixing member 70 includes a crossbeam and a clamp connected to the crossbeam, the crossbeam is fixed at a high position of the column through the clamp, and the fixed pulley 51 is connected to the crossbeam through the second hook 52, thereby realizing the rapid installation of the fixed pulley 51.

[0059] Furthermore, a first self-locking baffle is provided at the opening of the first hook 62 to prevent the heavy object to be hoisted from being separated from the first hook 62. Similarly, a second self-locking baffle is provided at the opening of the second hook 52 to prevent the second hook 52 from being separated from the fixing member 70. This avoids safety accidents and improves safety.

[0060] Optionally, in one embodiment, the lifting rope 40 is an insulating rope, that is, the lifting rope 40 is made of insulating material. Specifically, there are many live devices in the substation, and the lifting rope 40 made of insulating material can prevent safety accidents caused by accidentally touching the live devices during the lifting process, further improving the safety of the lifting device.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A lifting device, characterized in that: include: Cart; A lifting rope, the lifting rope is used to connect the heavy object to be lifted; A capstan mechanism, the capstan mechanism being arranged on the trolley and being used for winding up or releasing the lifting rope; as well as A clamp mechanism is connected to the cart and is used for clamping the cart on a column in the field.

2. The lifting device according to claim 1, characterized in that: The cart comprises: A base, wherein the base is connected with a universal wheel; A hand support frame, the hand support frame is connected to the base, and the clamp mechanism is fixed on the hand support frame; A support frame is connected to the hand support frame, and the capstan mechanism is arranged on the support frame.

3. The lifting device according to claim 2, characterized in that: The cart further comprises a lifting mechanism, which is connected to the support frame and is used to drive the support frame to rise and fall along the height direction of the handrail.

4. The lifting device according to claim 1, characterized in that: The capstan mechanism comprises: a mounting frame, the mounting frame being fixed to the cart; A reel, the reel is rotatably disposed on the mounting frame, and the reel is used to reel in or release the lifting rope; A driving member, wherein the driving member is arranged on the mounting frame, and an output shaft of the driving member is connected to the reel, and the driving member is used for driving the reel to rotate.

5. The lifting device according to claim 4, characterized in that: The capstan mechanism further includes an overload sensor, which is electrically connected to the drive member and is used to stop the operation of the drive member when the weight of the heavy object to be hoisted exceeds a preset value; and / or a lifting ring is provided on the mounting frame.

6. The lifting device according to claim 5, characterized in that: The holding hoop mechanism includes a holding belt, which is a semi-annular structure. Both ends of the holding belt are connected to the cart, and at least one end of the holding belt is detachably connected to the cart. At least one end of the holding belt is connected to a tightener, and the tightener is used to tighten or loosen the holding belt.

7. The lifting device according to claim 6, characterized in that: An anti-slip piece is arranged on the inner side of the holding belt.

8. The lifting device according to claim 1, characterized in that: The lifting device also includes a fixed pulley and a movable pulley. The fixed pulley is used to be fixed on a column in the field. The movable pulley is provided with a first hook for connecting the heavy object to be lifted. The lifting rope is wound around the fixed pulley and the movable pulley.

9. The lifting device according to claim 8, characterized in that: The lifting device also includes a fixing member, which is used to be detachably mounted on the column in the field. The fixed pulley is provided with a second hook, and the second hook is hung and connected to the fixing member.

10. The lifting device according to any one of claims 1 to 9, characterized in that: The lifting rope is an insulating rope.

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