Lifting appliance for transferring thermal insulation pipe

Abstract

The invention provides a lifting appliance for transferring a thermal insulation pipe, which comprises an adjusting base used for being connected with a crane; the sliding adjusting mechanism is provided with two adjusting positions which are arranged at an interval and can move on the adjusting base oppositely or oppositely; the number of the clamping mechanisms is two, the two clamping mechanisms are arranged corresponding to the two adjusting positions, and each clamping mechanism is provided with a clamping part; when the two adjusting positions relatively move, each clamping part downwards rotates to a horizontal state in a pitching manner and extends into the to-be-hoisted thermal insulation pipe, so that the inner wall of the to-be-hoisted thermal insulation pipe is clamped; or when moving back to back, the clamping device tilts and upwards rotates to a vertical state so as to release the clamping connection. According to the crane for transferring the thermal insulation pipe, the adjusting base is arranged to be connected with the crane, and the lifting appliance and the crane are used in cooperation; the sliding adjusting mechanism enables the two adjusting positions to move oppositely or oppositely, the clamping part of the clamping mechanism is driven to achieve pitching rotation and stretching and retracting, and therefore clamping and clamping releasing of the inner wall of the heat preservation pipe are achieved, and damage to the outer surface of the heat preservation pipe is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of insulating pipe transfer slings, and particularly relates to a sling for transferring insulating pipes. Background Art

[0002] An insulating pipe is a pipe used for transporting media such as liquids and gases and having an insulating function, and is widely used in fields such as heat supply, refrigeration, chemical industry, and petroleum. The insulating pipe is composed of an inner working pipe (for transporting the medium), an insulating layer (for reducing heat or cold loss), and a protective layer (for protecting the internal structure) from the inside to the outside. The three are closely combined through a special process to form a composite pipe with high-efficiency heat insulation, waterproofing, anti-corrosion, and compressive resistance properties.

[0003] In the prior art, when hoisting an insulating pipe, requirements such as anti-slip, preventing damage to the insulating layer, and load-bearing safety need to be met. When transferring a large-diameter heavy insulating pipe, a relatively high weight needs to be borne and the hoisting stability needs to be maintained. Generally, a combination of a hoisting belt and a steel wire is used and hoisting is carried out by a crane. However, when directly hoisting with a steel wire rope, the rigid extrusion of the steel wire rope may crush the polyurethane foam insulating layer or cut the polyethylene (PE) outer protective layer. If the width of an ordinary nylon hoisting belt is insufficient, it may tighten a part of the pipe, resulting in a depression in the insulating layer or the separation of the insulating layer from the working pipe, with poor adaptability and poor practicability. Summary of the Invention

[0004] An embodiment of the invention provides a sling for transferring insulating pipes, aiming to solve the problem of poor practicability caused by the existing insulating pipe hoisting method that may damage the insulating layer and the outer protective layer.

[0005] To achieve the above object, the technical solution adopted by the invention is: to provide a sling for transferring insulating pipes, including: An adjusting base for connecting with a crane; A sliding adjustment mechanism disposed on the adjusting base, the sliding adjustment mechanism having two adjustment positions spaced apart and capable of moving relative to or away from each other; Two clamping mechanisms are provided, and the two clamping mechanisms are respectively arranged corresponding to the two adjustment positions. Each clamping mechanism has a clamping portion; each clamping portion is configured to rotate downward to a horizontal state and extend into the insulating pipe to be hoisted when the two adjustment positions move relative to each other, so as to clamp the inner wall of the insulating pipe to be hoisted; or rotate upward to a vertical state to release the clamping when moving away from each other.

[0006] In a possible implementation manner, the spacing direction of the two adjustment positions is set as the first direction, and the direction perpendicular to and horizontal to the first direction is set as the second direction; The sliding adjustment mechanism includes: A fixed gear rotatably disposed on the adjusting base, and the rotation axis is arranged along the vertical direction; There are two sliding racks, each of which is slidably arranged on the adjusting base along the first direction, and the two sliding racks are spaced along the second direction. Each sliding rack is meshed with the fixed gear; There are two sliding structures, each of which corresponds to each sliding rack; each sliding structure is arranged on the protruding end of the corresponding sliding rack; A driver for driving the fixed gear to rotate; Wherein, the adjusting base is provided with a first slide rail for each sliding rack to slide.

[0007] In a possible implementation manner, the sliding structure includes: A connecting plate arranged on the protruding end of the corresponding sliding rack, and the connecting plate is arranged along the second direction; There are two sliding tooth plates, the two sliding tooth plates are spaced along the second direction, and are both slidably arranged on the corresponding first slide rail. One end of each sliding tooth plate is fixedly arranged on the connecting plate, and the other end of each sliding tooth plate extends outward along the first direction. Each sliding tooth plate is provided with a serrated section arranged along the first direction, and the sliding tooth plate is the adjusting position.

[0008] In a possible implementation manner, each clamping mechanism includes two clamping structures, the two clamping structures are spaced along the second direction, each clamping structure corresponds to each sliding tooth plate, and each clamping structure includes: There are two sliding seats, the two sliding seats are spaced along the second direction on both sides of the corresponding sliding tooth plate, and each sliding seat is slidably arranged on the adjusting base along the first direction; An articulated cantilever, one end of which is connected to the corresponding two sliding seats, and the articulation axis is spaced along the second direction, and the other end of the articulated cantilever extends outward; A clamping component arranged on the protruding end of the articulated cantilever for clamping the pipe orifice of the heat preservation pipe to be hoisted when the articulated cantilever is in a horizontal state; Wherein, the articulation end of the articulated cantilever is provided with meshing teeth meshed with the serrated section of the sliding tooth plate; Wherein, both ends of the serrated section of the sliding tooth plate along the first direction are provided with limit blocks for driving the sliding seat to slide when the serrated section of the sliding tooth plate drives the articulated cantilever to pitch and move to the limit position; Wherein, the adjusting base is provided with a second slide rail for slidably connecting each sliding seat.

[0009] In a possible implementation, each of the clamping components includes: Adjusting rods, there are two of them. One end of each adjusting rod is slidably connected to the protruding end of the articulated cantilever. The other end of each adjusting rod extends outwards. Each adjusting rod can be slidably arranged in the protruding end of the articulated cantilever in the vertical direction when the articulated cantilever pitches and rotates to the horizontal state; Adjusting bolts, which penetrate through the protruding end of the articulated cantilever and the adjusting rod, and are used to fix the position of the adjusting rod on the protruding end of the articulated cantilever; Abutting rods, which are slidably arranged on the protruding ends of the adjusting rods. One end of the abutting rod can be slidably arranged on the protruding end of the adjusting rod in the second direction when the articulated cantilever pitches and rotates to the horizontal state. The other end of the abutting rod extends outwards; Fixing bolts, which are used to fix the position of the abutting rod on the adjusting rod.

[0010] In a possible implementation, abutting sleeves are provided on the protruding ends of each of the abutting rods, and the abutting sleeves are made of flexible materials.

[0011] In a possible implementation, a plurality of abutting seats are provided on each of the articulated cantilevers. Each of the abutting seats is arranged at intervals in the first direction when the articulated cantilever pitches and rotates to the horizontal state. Each of the abutting seats is used to abut against the outer wall of the heat-insulating pipe to be hoisted when the articulated cantilever pitches and rotates to the horizontal state.

[0012] In a possible implementation, a dust cover is provided on the adjusting base.

[0013] In this implementation, compared with the prior art, by setting the adjusting base to be connected to the crane, the cooperation between the lifting tool and the crane is realized; the sliding adjustment mechanism enables the two adjustment positions to move relatively or away from each other, driving the clamping part of the clamping mechanism to pitch and rotate and extend and retract, so as to realize the clamping and unclamping of the inner wall of the heat-insulating pipe, avoid damage to the outer surface of the heat-insulating pipe, and improve the hoisting safety and integrity of the heat-insulating pipe. Description of the Drawings

[0014] Figure 1 is the working structure schematic diagram of the lifting tool for heat-insulating pipe transfer provided by the embodiment of the present invention; Figure 2 is the internal structure schematic diagram of the lifting tool for heat-insulating pipe transfer provided by the embodiment of the present invention Figure 1 ; Figure 3 is the internal structure schematic diagram of the lifting tool for heat-insulating pipe transfer provided by the embodiment of the present invention Figure 2 ; Figure 4 is Figure 3 the enlarged structure schematic diagram at A in Description of the reference numerals in the drawings: 10. Adjusting base; 11. Dust cover; 20. Sliding adjustment mechanism; 21. Fixed gear; 22. Sliding rack; 23. Sliding structure; 231. Connecting plate; 232. Sliding tooth plate; 24. Driver; 30. Clamping mechanism; 31. Clamping structure; 311. Sliding seat; 312. Hinged cantilever; 3121. Abutting seat; 313. Clamping assembly; 3131. Adjusting rod; 3132. Adjusting bolt; 3133. Abutting rod; 31331. Abutting sleeve; 3134. Fixed bolt. Detailed implementation manners

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] It should be noted that the orientation or positional relationship indicated by the terms "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0017] It should also be noted that unless otherwise clearly defined and limited, terms such as "installation", "connection", "fixation", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, the meanings of "multiple" and "several" are two or more, unless otherwise clearly and specifically defined.

[0019] Please refer to Figures 1 to 4, the sling for transferring the heat-insulating pipe provided by the present invention will be described below. The sling for transferring the heat-insulating pipe includes an adjusting base 10, a sliding adjustment mechanism 20, and a clamping mechanism 30. The adjusting base 10 is used to connect with a crane. The sliding adjustment mechanism 20 is arranged on the adjusting base 10. The sliding adjustment mechanism 20 has two adjusting positions which are arranged at intervals and can move relatively or away from each other. The clamping mechanism 30 has two. The two clamping mechanisms 30 are arranged in one-to-one correspondence with the two adjusting positions. Each clamping mechanism 30 has a clamping part. Each clamping part is used to rotate downward to the horizontal state and extend into the heat-insulating pipe to be hoisted when the two adjusting positions move relatively, so as to clamp the inner wall of the heat-insulating pipe to be hoisted. Or rotate upward to the vertical state to release the clamping when moving away from each other.

[0020] Compared with the prior art, the sling for transferring the heat-insulating pipe provided in this embodiment realizes the cooperative use of the sling and the crane by arranging the adjusting base 10 to connect with the crane. The sliding adjustment mechanism 20 enables the two adjusting positions to move relatively or away from each other, driving the clamping part of the clamping mechanism 30 to realize pitching rotation and telescoping, so as to realize the clamping and release of the inner wall of the heat-insulating pipe, avoiding damage to the outer surface of the heat-insulating pipe, and improving the hoisting safety and integrity of the heat-insulating pipe.

[0021] Through simple relative movement and pitching rotation actions, the efficient and stable hoisting of the heat-insulating pipe is realized. The operation is convenient and fast, and the adaptability to the heat-insulating pipe is strong, which can meet the hoisting requirements of heat-insulating pipes of different sizes. In actual production, the adjusting base 10 can be designed as a structure with a standard interface, which is convenient to connect with various models of cranes. The sliding adjustment mechanism 20 can adopt an electric or hydraulic drive mode to realize the precise movement of the adjusting position. The clamping part of the clamping mechanism 30 can adopt different materials and structural designs according to the material and shape of the inner wall of the heat-insulating pipe, such as a clamping part made of rubber material, so as to increase the friction force and improve the stability of the clamping.

[0022] In some embodiments, the above-mentioned sliding adjustment mechanism 20 can adopt the structure as Figures 1 to 3 shown. Refer to Figures 1 to 3 , set the interval direction of the two adjusting positions as the first direction, and the direction perpendicular to the first direction and horizontal as the second direction.

[0023] The sliding adjustment mechanism 20 includes a fixed gear 21, a sliding rack 22, a sliding structure 23, and a driver 24. The fixed gear 21 is rotatably mounted on the adjustment base 10, with the axis of rotation arranged in the vertical direction. Two sliding racks 22 are provided, each sliding rack 22 is slidably mounted on the adjustment base 10 along a first direction, and the two sliding racks 22 are spaced apart along a second direction, and each sliding rack 22 is meshed with the fixed gear 21. Two sliding structures 23 are provided, each sliding structure 23 is corresponding to a sliding rack 22. Each sliding structure 23 is arranged on the protruding end of the corresponding sliding rack 22. The driver 24 is used to drive the fixed gear 21 to rotate.

[0024] The adjusting base 10 is provided with a first sliding rail for each sliding rack 22 to slide.

[0025] By meshing the fixed gear 21 with the sliding rack 22, the two sliding racks 22 can move synchronously relative to or away from each other, ensuring the consistency and stability of the movement of the two adjustment positions, so that the clamping mechanism 30 can stably clamp and release the insulation pipe. At the same time, the setting of the first slide rail provides a stable sliding guide for the sliding rack 22, reducing friction and shaking during the sliding process. The sliding adjustment mechanism 20 has a simple structure, reliable transmission, and is easy to manufacture and maintain. Through the gear rack transmission, the movement distance of the adjustment position can be precisely controlled, improving the adaptability of the sling to insulation pipes of different specifications. The fixed gear 21 can be made of high-precision steel gears to ensure the accuracy and reliability of the transmission. The sliding rack 22 can be treated with wear-resistant treatment on the surface, such as chrome plating or a wear-resistant coating, to extend its service life. The driver 24 can optionally use a servo motor to precisely control the rotation angle and speed of the fixed gear 21 through the control system, thereby achieving precise control of the movement of the adjustment position.

[0026] The rack portion on each sliding rack 22 is set toward the other sliding rack 22, one end of each sliding rack 22 is engaged with the fixed gear 21, and the other end of each sliding rack 22 extends outward along the first direction. The two sliding racks 22 are used to move relative to or back and forth along the first direction when the fixed gear 21 rotates.

[0027] The driver 24 may be a motor, which is an electromagnetic device that can convert electrical energy into mechanical energy and is widely used in many fields such as modern industry, household appliances, transportation, etc. The motor is a prior art and will not be described in detail here.

[0028] In some embodiments, the sliding structure 23 may be configured as follows: Figures 1 to 3 See the structure shown. Figures 1 to 3, the sliding structure 23 includes a connecting plate 231 and a sliding tooth plate 232. The connecting plate 231 is arranged at the protruding end of the corresponding sliding rack 22, and the connecting plate 231 is arranged along the second direction. There are two sliding tooth plates 232, and the two sliding tooth plates 232 are arranged at intervals along the second direction and are both slidably arranged on the corresponding first slide rail. One end of each sliding tooth plate 232 is fixedly arranged on the connecting plate 231, and the other end of each sliding tooth plate 232 extends outward along the first direction. Each sliding tooth plate 232 is provided with a serrated section arranged along the first direction, and the sliding tooth plate 232 is the adjustment position.

[0029] The arrangement of the connecting plate 231 and the sliding tooth plate 232 in the sliding structure 23 further refines the structure of the adjustment position, enabling the adjustment position to better cooperate with the clamping mechanism 30. The serrated section on the sliding tooth plate 232 cooperates with the meshing teeth on the articulated cantilever 312. When the sliding tooth plate 232 moves, it can drive the articulated cantilever 312 to achieve pitching rotation, thereby realizing the switching of the horizontal and vertical states of the clamping part. The structure is compact and the transmission efficiency is high. This structural design makes the action of the clamping mechanism 30 more smooth and accurate, can quickly respond to the movement of the adjustment position, and improves the efficiency of the hoisting operation. At the same time, the sliding of the sliding tooth plate 232 on the first slide rail ensures the stability and reliability of its movement. The connecting plate 231 can be made of high-strength aluminum alloy material, which reduces the weight while ensuring the strength. The serrated section of the sliding tooth plate 232 can be precisely designed according to the shape and size of the meshing teeth of the articulated cantilever 312 to ensure the tightness and reliability of the meshing. During the installation process, the position of the sliding tooth plate 232 on the first slide rail can be adjusted to ensure the correct cooperation with the clamping mechanism 30.

[0030] In some embodiments, the above clamping mechanism 30 can adopt the structure as Figures 1 to 4 shown. Refer to Figures 1 to 4 , each clamping mechanism 30 includes two clamping structures 31, and the two clamping structures 31 are arranged at intervals along the second direction. Each clamping structure 31 is correspondingly arranged with each sliding tooth plate 232. Each clamping structure 31 includes: a sliding seat 311, an articulated cantilever 312, and a clamping component 313. There are two sliding seats 311, and the two sliding seats 311 are arranged at intervals along the second direction on both sides of the corresponding sliding tooth plate 232. Each sliding seat 311 is slidably arranged on the adjustment base 10 along the first direction. One end of the articulated cantilever 312 is connected to the corresponding two sliding seats 311, and the articulated axes are arranged at intervals along the second direction. The other end of the articulated cantilever 312 extends outward. The clamping component 313 is arranged at the protruding end of the articulated cantilever 312 and is used to clamp the pipe orifice of the heat preservation pipe to be hoisted when the articulated cantilever 312 is in a horizontal state.

[0031] Among them, the articulated end of the articulated cantilever 312 is provided with meshing teeth that mesh with the serrated section of the sliding tooth plate 232.

[0032] Wherein, limiting blocks are provided at both ends of the serrated section of the sliding tooth plate 232 along the first direction, and are used to drive the sliding seat 311 to slide when the serrated section of the teeth of the sliding tooth plate 232 drives the articulated cantilever 312 to pitch and move to the limit position.

[0033] Wherein, a second slide rail for slidably connecting each sliding seat 311 is provided on the adjusting base 10.

[0034] The arrangement of the sliding seat 311, the articulated cantilever 312 and the clamping structure 31 in the clamping mechanism 30 enables the clamping mechanism 30 to stably clamp the heat preservation pipe. The sliding of the sliding seat 311 on the second slide rail provides stable support and guidance for the pitching rotation of the articulated cantilever 312. The meshing transmission between the articulated cantilever 312 and the sliding tooth plate 232 realizes the switching between the horizontal and vertical states of the clamping structure 31. The setting of the limiting blocks prevents the articulated cantilever 312 from rotating excessively, ensuring the safety and reliability of the clamping mechanism 30. The clamping mechanism 30 has a reasonable structure, and the cooperation between its components is close, and it can effectively clamp and hoist the heat preservation pipe. Through the cooperation of the sliding seat 311 and the second slide rail, the stability of the rotation of the articulated cantilever 312 is improved, the shaking is reduced, and thus the accuracy and safety of the hoisting are improved. The sliding seat 311 can adopt a structure with rollers to reduce the frictional resistance when sliding on the second slide rail. The articulated cantilever 312 can be made of high-strength alloy steel to ensure its strength and rigidity. During the installation process, the position of the limiting blocks can be adjusted to meet the hoisting requirements of heat preservation pipes of different specifications.

[0035] In some embodiments, the above clamping assembly 313 can adopt the structure as Figures 1 to 4 shown. Refer to Figures 1 to 4 , each clamping assembly 313 includes an adjusting rod 3131, an adjusting bolt 3132, a butting rod 3133 and a fixing bolt 3134. There are two adjusting rods 3131. One end of each adjusting rod 3131 is slidably connected to the protruding end of the articulated cantilever 312, and the other end of each adjusting rod 3131 extends outwards. Each adjusting rod 3131 can be slidably arranged on the protruding end of the articulated cantilever 312 along the vertical direction when the articulated cantilever 312 pitches and rotates to the horizontal state. The adjusting bolt 3132 penetrates through the protruding end of the articulated cantilever 312 and the adjusting rod 3131, and is used to fix the position of the adjusting rod 3131 on the protruding end of the articulated cantilever 312. The butting rod 3133 is slidably arranged on the protruding end of each adjusting rod 3131. One end of the butting rod 3133 can be slidably arranged on the protruding end of the adjusting rod 3131 along the second direction when the articulated cantilever 312 pitches and rotates to the horizontal state, and the other end of the butting rod 3133 extends outwards. The fixing bolt 3134 is used to fix the position of the butting rod 3133 on the adjusting rod 3131.

[0036] The settings of the adjusting rod 3131, adjusting bolt 3132, abutting rod 3133, and fixing bolt 3134 in the clamping component 313 enable the clamping component 313 to be adjusted according to different specifications of the insulation pipe. The sliding and fixing of the adjusting rod 3131 on the articulated cantilever 312, and the sliding and fixing of the abutting rod 3133 on the adjusting rod 3131 can adjust the position and size of the clamping component 313, so as to adapt to insulation pipes with different inner diameters and wall thicknesses, improving the versatility of the lifting tool. This design of the adjustable clamping component 313 enables the lifting tool to meet the lifting requirements of insulation pipes of various specifications, reducing the types and quantities of lifting tools and lowering the production cost. At the same time, by precisely adjusting the clamping component 313, the stability and safety of lifting can be improved. The adjusting rod 3131 and the abutting rod 3133 can adopt a structure with scales, which is convenient for operators to visually adjust the position. The adjusting bolt 3132 and the fixing bolt 3134 can adopt high-strength bolts to ensure the firmness of the connection. In actual use, the operator can adjust the positions of the adjusting rod 3131 and the abutting rod 3133 through the adjusting bolt 3132 and the fixing bolt 3134 according to the specifications of the insulation pipe, so that the clamping component 313 fits tightly against the inner wall of the insulation pipe.

[0037] In some embodiments, the above-mentioned abutting rod 3133 can adopt a structure as Figures 1 to 4 shown. Refer to Figures 1 to 4 , and abutting sleeves 31331 are provided on the protruding ends of each abutting rod 3133, and the abutting sleeves 31331 are made of flexible materials.

[0038] The abutting sleeves 31331 on the protruding ends of the abutting rods 3133 are made of flexible materials. When clamping the insulation pipe, they can effectively protect the inner wall of the insulation pipe and prevent the abutting rods 3133 from damaging the inner wall of the insulation pipe. At the same time, the flexible abutting sleeves 31331 can increase the friction with the inner wall of the insulation pipe, improving the stability of clamping. This design is simple and practical. By adding the abutting sleeves 31331 to the abutting rods 3133, it not only protects the insulation pipe but also improves the stability of lifting. The cost increase is small, but it can bring a significant improvement in effect. The abutting sleeves 31331 can be made of flexible materials such as rubber and silica gel, and the abutting sleeves 31331 with appropriate hardness and size can be selected according to the material and size of the inner wall of the insulation pipe. When installing the abutting sleeves 31331, interference fit or bonding can be used to ensure that they are firmly installed on the abutting rods 3133.

[0039] In some embodiments, the above-mentioned articulated cantilever 312 can adopt a structure as Figures 1 to 4 shown. Refer to Figures 1 to 4Each hinged cantilever 312 is provided with a plurality of abutment seats 3121, and each abutment seat 3121 is arranged at intervals along the first direction when the hinged cantilever 312 pitches and rotates to a horizontal state. Each abutment seat 3121 is used to abut against the outer wall of the insulated pipe to be hoisted when the hinged cantilever 312 pitches and rotates to a horizontal state.

[0040] The multiple abutment seats 3121 provided on the articulated cantilever 312 can abut against the outer wall of the insulation pipe when the articulated cantilever 312 is in a horizontal state, thereby increasing the contact points between the sling and the insulation pipe and improving the stability of the lifting. At the same time, the provision of the abutment seats 3121 can disperse the forces acting during the lifting process, preventing the insulation pipe from being damaged by excessive local forces. This structural design can effectively improve the stability and reliability of the sling and protect the integrity of the insulation pipe during the lifting process. The provision of multiple abutment seats 3121 enables the sling to better adapt to insulation pipes of different shapes and specifications, thereby improving the versatility of the sling. The abutment seats 3121 can adopt a structure with elastic gaskets to increase the contact area and friction with the outer wall of the insulation pipe. When installing the abutment seats 3121, the position and angle of the abutment seats 3121 can be adjusted according to the outer diameter and shape of the insulation pipe to ensure that it can fit tightly against the outer wall of the insulation pipe.

[0041] In some embodiments, the adjustment base 10 may be configured as follows: Figure 1 The structure shown. Figure 1 A dust cover 11 is provided on the adjustment base 10 .

[0042] The dust cover 11 provided on the adjustment base 10 can effectively prevent dust, debris, etc. from entering the interior of the sling, and prevent dust from causing wear on the transmission components inside the sling, thereby affecting the normal operation and service life of the sling. The dust cover 11 has a simple structure and low cost, but can significantly improve the reliability and service life of the sling, and reduce the maintenance cost and frequency of the sling. The dust cover 11 can adopt a detachable structural design to facilitate cleaning and maintenance of the interior of the sling. The material of the dust cover 11 can be plastic or metal, and the selection is made according to the actual use environment and needs.

[0043] The adjustment base 10 is connected to the crane's hook via a standard interface. When the insulated pipe needs to be hoisted, the driver 24 is activated, which drives the fixed gear 21 to rotate. The fixed gear 21 engages with the two sliding racks 22, causing the two sliding racks 22 to move relative to each other in a first direction. The movement of the sliding racks 22 drives the connecting plate 231 and the sliding rack 232 to move. The serrated segments on the sliding rack 232 engage with the meshing teeth on the articulated cantilever 312, driving the articulated cantilever 312 to pitch downward to a horizontal position. At this point, the clamping portion of the clamping assembly 313 extends into the insulated pipe to be hoisted. According to the specifications of the thermal insulation pipe, adjust the position of the adjusting rod 3131 on the protruding end of the articulated cantilever 312 by adjusting the bolt 3132 to make the protruding length of the adjusting rod 3131 appropriate. Then adjust the position of the abutting rod 3133 on the adjusting rod 3131 by the fixing bolt 3134 so that the position of the abutting rod 3133 can be closely attached to the inner wall of the thermal insulation pipe. The abutting sleeve 31331 on the protruding end of the abutting rod 3133 contacts the inner wall of the thermal insulation pipe, increasing the friction force and protecting the inner wall of the thermal insulation pipe at the same time. A plurality of abutting seats 3121 on the articulated cantilever 312 abut against the outer wall of the thermal insulation pipe in the horizontal state, further improving the stability of the hoisting. When it is necessary to release the clamping after the hoisting is completed, start the driver 24 to make the fixed gear 21 rotate in the reverse direction. The two sliding racks 22 move away from each other, driving the sliding tooth plate 232 to move. The articulated cantilever 312 rotates upward in a pitching motion under the drive of the sliding tooth plate 232 to the vertical state, and the clamping part withdraws from the thermal insulation pipe, completing the operation of releasing the clamping. During the whole use process, the dust cover 11 can effectively prevent dust from entering the interior of the hoist and protect the normal operation of the hoist.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Lifting tool for transferring heat-insulating pipes, characterized in that include: Adjustable base for connection with crane; A sliding adjustment mechanism is provided on the adjustment base, wherein the sliding adjustment mechanism has two adjustment positions that are spaced apart and can move relative to or opposite to each other; There are two clamping mechanisms, and the two clamping mechanisms are arranged in a one-to-one correspondence with the two adjustment positions. Each clamping mechanism has a clamping part; each clamping part is used to rotate downward to a horizontal state when the two adjustment positions move relative to each other, and extend into the insulated pipe to be hoisted to clamp the inner wall of the insulated pipe to be hoisted; or rotate upward to a vertical state when moving away from each other to release the clamping.

2. The sling for transferring the heat-insulating pipe according to claim 1, wherein, Setting the spacing direction between the two adjustment positions as a first direction, and a direction perpendicular to and horizontal to the first direction as a second direction; The slip adjustment mechanism comprises: A fixed gear is rotatably arranged on the adjustment base, with a rotation axis arranged in a vertical direction; There are two sliding racks, each of which is slidably arranged on the adjustment base along the first direction, and the two sliding racks are spaced apart along the second direction, and each of the sliding racks is engaged with the fixed gear; There are two sliding structures, each of which is arranged corresponding to each of the sliding racks; each of the sliding structures is arranged on the protruding end of the corresponding sliding rack; A driver, configured to drive the fixed gear to rotate; Wherein, the adjustment base is provided with a first sliding rail for each sliding rack to slide.

3. The lifting tool for transferring the heat-insulating pipe according to claim 2, wherein The sliding structure comprises: a connecting plate, arranged on the protruding end of the corresponding sliding rack, and arranged along the second direction; There are two sliding tooth plates, which are spaced apart along the second direction and are slidably arranged on the corresponding first slide rails. One end of each sliding tooth plate is fixed on the connecting plate, and the other end of each sliding tooth plate extends outward along the first direction. Each sliding tooth plate is provided with a serrated section arranged along the first direction, and the sliding tooth plate is the adjustment position.

4. The lifting tool for transferring the heat-insulating pipe according to claim 3, characterized in that, Each of the clamping mechanisms includes two clamping structures, the two clamping structures are spaced apart along the second direction, each of the clamping structures is correspondingly arranged to each of the sliding tooth plates, and each of the clamping structures includes: There are two sliding seats, the two sliding seats are spaced apart along the second direction on both sides of the corresponding sliding tooth plate, and each sliding seat is slidably arranged on the adjustment base along the first direction; a hinged cantilever, one end of which is connected to the corresponding two sliding seats, the hinge axis being spaced apart along the second direction, and the other end of the hinged cantilever extending outward; A clamping assembly is provided on the protruding end of the hinged cantilever and is used to clamp the pipe opening of the thermal insulation pipe to be hoisted when the hinged cantilever is in a horizontal state; Wherein, the junction end of the hinged cantilever is provided with meshing teeth that mesh with the serrated section of the sliding tooth plate; Wherein, both ends of the sawtooth section of the sliding tooth plate along the first direction are provided with limit blocks, which are used to drive the sliding seat to slide when the sawtooth section of the sliding tooth plate drives the articulated cantilever to pitch and move to the extreme position; Wherein, a second slide rail for slidably connecting each of the sliding seats is provided on the adjusting base.

5. The sling for transferring the heat-insulating pipe according to claim 4, wherein Each of the clamping components includes: Adjusting rods, there are two adjusting rods, one end of each adjusting rod is slidably connected to the protruding end of the articulated cantilever, the other end of each adjusting rod extends outwards, and each adjusting rod can be slidably arranged in the vertical direction on the protruding end of the articulated cantilever when the articulated cantilever rotates to the horizontal state in a pitching manner; Adjusting bolts, which penetrate through the protruding end of the articulated cantilever and the adjusting rod, and are used to fix the position of the adjusting rod on the protruding end of the articulated cantilever; Abutted rods, which are slidably arranged on the protruding ends of the adjusting rods, one end of the abutted rod can be slidably arranged in the second direction on the protruding end of the adjusting rod when the articulated cantilever rotates to the horizontal state in a pitching manner, and the other end of the abutted rod extends outwards; Fixing bolts, which are used to fix the position of the abutted rod on the adjusting rod.

6. The lifting tool for transferring the heat-insulating pipe according to claim 5, characterized in that, Abutting sleeves are provided on the protruding ends of the abutted rods, and the abutting sleeves are made of flexible materials.

7. The lifting tool for transferring the heat-insulating pipe according to claim 4, wherein, A plurality of abutting seats are provided on each of the articulated cantilevers, and the abutting seats are arranged at intervals in the first direction when the articulated cantilever rotates to the horizontal state in a pitching manner, and each of the abutting seats is used to abut against the outer wall of the heat-insulating pipe to be hoisted when the articulated cantilever rotates to the horizontal state in a pitching manner.

8. The sling for transferring the heat-insulating pipe according to claim 1, characterized in that, A dust cover is provided on the adjusting base.

Images