A economizer hoisting device and hoisting method

Abstract

The present invention discloses a economizer hoisting device, comprising: a crane, the crane including a body, a boom, an electric hoist and a hook, the boom being connected to the body, an electric hoist being provided at the upper end of the boom, and the hook being connected to the electric hoist through a steel wire rope; a support frame, the length of the support frame being greater than the length when more than two economizers are welded together up and down, at least three pairs of hooks being detachably connected to the support frame, the hooks being evenly distributed along the length direction of the support frame, each pair of hooks being symmetrically distributed left and right, and the opening direction of the hooks facing upward; a lifting rope, the two ends of the lifting rope being fixedly connected to the left and right sides of the support frame, the two ends of the lifting rope being symmetrically distributed left and right, and the connection points of the lifting rope and the support frame being located between the upper end and the midpoint of the support frame, and the middle of the lifting rope being hung on the hook; a control rope, the control rope including two ropes, the upper ends of the two control ropes being respectively symmetrically fixedly connected to the support frames on the left and right sides. To solve the problem of low efficiency in installing economizers in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of economizer installation, and particularly relates to an economizer hoisting device and a hoisting method. Background Art

[0002] The installation of an economizer is an essential link in the construction of a thermal power station. During the installation process, the economizer needs to be hoisted to a high position on the boiler frame for welding. When welding, first, the economizer pipes need to be aligned. After alignment, the relative positions of the two pipe ports to be welded also need to be fixed before welding operations can be carried out. And because it is high-altitude operation, the operators also need to be suspended in mid-air with lifting ropes during the operation, and the operation is very complicated and the work efficiency is extremely low, which is a bottleneck link in the construction of a thermal power station. Summary of the Invention

[0003] In order to solve the above-mentioned shortcomings and deficiencies of the prior art, the purpose of the present invention is to provide an economizer hoisting device and a hoisting method.

[0004] The technical solution of the present invention is: An economizer hoisting device, comprising:

[0005] A crane, the crane includes a body, a boom, an electric hoist, and a hook. The boom is connected to the body, an electric hoist is provided at the upper end of the boom, and the hook is connected to the electric hoist through a steel wire rope;

[0006] A support frame, the length of the support frame is greater than the length when more than 2 economizers are welded together up and down. At least 3 pairs of hooks are detachably connected to the support frame. The hooks are evenly distributed along the length direction of the support frame. Each pair of hooks is symmetrically distributed left and right, and the opening direction of the hook faces upward;

[0007] Lifting ropes, both ends of the lifting ropes are fixedly connected to the left and right sides of the support frame. Both ends of the lifting ropes are symmetrically distributed left and right. The connection points of the lifting ropes and the support frame are located between the upper end and the midpoint of the support frame. The middle part of the lifting ropes is hung on the hook;

[0008] Control ropes, including 2 control ropes. The upper ends of the 2 control ropes are respectively symmetrically fixedly connected to the left and right sides of the support frame.

[0009] Further, the support frame includes:

[0010] Main frame bodies, the number of the main frame bodies is 2, and the main frame bodies are symmetrically distributed left and right;

[0011] Connecting rods, including more than 5 pairs. Each pair of connecting rods 202 is symmetrically distributed in the front-back direction. The connecting rods are evenly distributed along the length direction of the main frame body. Both ends of the connecting rods are respectively fixedly connected to the main frame bodies on the left and right sides. The length direction of the connecting rods is perpendicular to the length direction of the main frame body.

[0012] Further, the main frame body includes:

[0013] Main rods, including two main rods, which are symmetrically distributed up and down.

[0014] Fixing rods, including more than 3 fixing rods. The two ends of the fixing rods are respectively fixedly connected to the upper and lower main rods, and the fixing rods are evenly distributed along the length direction of the main rods.

[0015] Further, the connecting rods are L-shaped steels, and the connecting rods in each pair of connecting rods are respectively fixedly connected to the upper and lower main rods.

[0016] Further, more than 3 mounting holes are provided on the main rods. The mounting holes are polygonal holes, which penetrate the main rods, and the mounting holes are evenly distributed along the length direction of the support frame.

[0017] The hook includes:

[0018] An L-shaped rod, the diameter of the L-shaped rod is larger than the diameter of the circumcircle of the mounting hole.

[0019] A mounting rod, which is polygonal and matches the mounting hole. One end of the mounting rod is fixedly connected to the short side of the L-shaped rod. The central axis of the mounting rod coincides with the central axis of the short side of the L-shaped rod, and the length of the mounting rod is less than the length of the mounting hole.

[0020] A screw rod, which is fixedly connected to the end of the mounting rod away from the L-shaped rod. The central axis of the screw rod coincides with the central axis of the mounting rod, and the diameter of the screw rod is less than the diameter of the inscribed circle of the mounting hole.

[0021] Among them, the hook is detachably mounted on the support frame by inserting the mounting rod into the mounting hole and using a bolt to threadedly connect to the screw rod.

[0022] A method for using the device, the method includes the following steps:

[0023] S1. Weld multiple economizers into an economizer group on the ground in advance.

[0024] S2. Place the support frame on the upper surface of the economizer group, and make the support frame centered in the up and down direction and centered in the left and right direction on the economizer group.

[0025] S3. Place the long side of the L-shaped rod of the hook under the pipeline of the economizer group. Insert the mounting rod of the hook into the mounting hole, and use a bolt to threadedly connect to the screw rod to fix the hook symmetrically left and right on the main rod. There are more than 3 pairs of hooks, and the hooks are evenly distributed along the length direction of the main rod.

[0026] S4. Fix the two ends of the lifting rope to the left and right sides of the support frame. The two ends of the lifting rope are symmetrically left and right, and the connection points of the lifting rope and the support frame are located between the upper end and the midpoint of the support frame.

[0027] S5. Hang the middle part of the lifting rope on the hook.

[0028] S6. Fix the upper ends of the two control ropes symmetrically left and right to the support frames on the left and right sides respectively;

[0029] S7. Control the crane to lift, and at the same time apply tensile forces to the two control ropes to control the inclination and orientation of the economizer group, so that the upper end of the economizer group is located at the designated installation point;

[0030] S8. Fix the upper end of the economizer group through a pulley block, and fine-tune the height of the economizer through the pulley block;

[0031] S9. Slowly release the tensile force of the control rope to straighten the economizer group in the vertical direction;

[0032] S10. Weld the economizer group;

[0033] S11. Control the crane to lower the hook, and the support frame slides down under the action of gravity to disengage the hook from the economizer group.

[0034] The beneficial effects of the present invention are: Compared with the prior art,

[0035] 1) When the present invention is used, first weld multiple economizers, and then hang the welded economizer group on the hook of the support frame. The support frame plays a role in reducing the deformation of the economizer group during the hoisting process. Then use a crane to lift the upper part of the support frame through a lifting rope, making the upper part of the crane face upwards. At the same time, control the inclination and orientation of the economizer group through the control rope, so as to achieve the purpose of pre-welding the economizer on the ground and then hoisting it to the boiler frame for installation. The number of high-altitude welding points is significantly reduced, and the work efficiency is improved;

[0036] 2) Through the cooperation of the main frame body and the connecting rod, the main frame body and the connecting rod form multiple I-shaped structures. The I-shaped structure has high structural strength and ensures the overall rigidity of the support frame;

[0037] 3) The main rod and the fixing rod are connected to each other to form the main rod. The main rod and the fixing rod form multiple I-shaped structures. The I-shaped structure has high structural strength and ensures the overall rigidity of the main frame body. At the same time, the rectangular hollow formed between the main rod and the fixing rod in this structure makes the main frame body lighter;

[0038] 4) By setting the connecting rod as an L-shaped steel, the rigidity of the connecting rod is better;

[0039] 5) Through the cooperation of the mounting rod and the mounting hole on the hook, and by using bolts to fix the hook, the present invention enables the support frame to be first placed on the economizer group and then the hook to be installed, so that the economizer group is hung on the hook. This avoids the difficulty of manipulating the extremely heavy support frame to move when directly fixing the hook on the support frame to enable the hook to be hung on the economizer group. At the same time, the cooperation of the polygonal mounting rod and the mounting hole prevents the hook from rotating in the mounting hole, causing the economizer group to disengage from the hook.

[0040] 6) The present invention adopts the method of first forming multiple economizers into an economizer group on the ground and then hoisting the economizer group to a high position on the boiler frame for installation. This significantly reduces the number of welding points at high altitudes and improves work efficiency. During the hoisting process, the welded economizer group is hung on the hook of the support frame, and the support frame plays a role in reducing the deformation of the economizer group during hoisting. Then, a crane is used to lift the upper part of the support frame through a lifting rope, making the upper part of the crane face upward. At the same time, the inclination and orientation of the economizer group are controlled through a control rope, thereby achieving the purpose of pre-welding the economizer on the ground and then hoisting it to the boiler frame for installation. The economizer installation method used in the present invention has fewer high-altitude welding points, higher efficiency, and will not cause bending damage to the economizer during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a perspective view of the present invention;

[0042] Figure 2 is Figure 1 a partial view of part A in

[0043] Figure 3 is Figure 1 a partial view of part B in

[0044] Figure 4 is a perspective view of the support frame of the present invention;

[0045] Figure 5 is a perspective view of the hook of the present invention;

[0046] Figure 6 is a front view of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0047] The invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0048] In the present invention, the description of directions such as "up, down, front, back, left, right" is based on Figure 6 in the specification drawings.

[0049] Example 1: Refer to Figures 1 to 6, a economizer hoisting device in this embodiment includes: a crane 1, the crane 1 includes a body 101, a boom 102, an electric hoist 103 and a hook 104, the boom 102 is connected to the body 101, the electric hoist 103 is arranged at the upper end of the boom 102, and the hook 104 is connected to the electric hoist 103 through a steel wire rope; a support frame 2, the length of the support frame 2 is greater than the length when more than 2 economizers are welded together up and down, at least 3 pairs of hooks 6 are detachably connected to the support frame 2, the hooks 6 are evenly distributed along the length direction of the support frame 2, each pair of hooks 6 is symmetrically distributed left and right, and the opening direction of the hook 6 is upward; a lifting rope 4, both ends of the lifting rope 4 are bolted to the left and right sides of the support frame 2, both ends of the lifting rope 4 are symmetrically distributed left and right, the connection points of the lifting rope 4 and the support frame 2 are located between the upper end and the midpoint of the support frame 2, and the middle part of the lifting rope 4 is hung on the hook 104; a control rope 5, the control rope 5 includes 2 ropes, and the upper ends of the 2 control ropes 5 are respectively symmetrically and fixedly connected to the left and right sides of the support frame 2.

[0050] Further, the support frame 2 includes: a main frame body 201, the number of the main frame bodies 201 is 2, and the main frame bodies 201 are symmetrically distributed left and right; connecting rods 202, the number of the connecting rods 202 is more than 5 pairs, each pair of connecting rods 202 is symmetrically distributed in the front and rear direction, the connecting rods 202 are evenly distributed along the length direction of the main frame body 201, both ends of the connecting rods 202 are respectively welded to the main frame bodies 201 on the left and right sides, and the length direction of the connecting rods 202 is perpendicular to the length direction of the main frame body 201.

[0051] Further, the main frame body 201 includes: main rods 2011, the number of the main rods 2011 is 2, and the two main rods 2011 are symmetrically distributed up and down; fixing rods 2012, the number of the fixing rods 2012 is more than 3, both ends of the fixing rods 2012 are respectively welded to the upper and lower main rods 2011, and the fixing rods 2012 are evenly distributed along the length direction of the main rods 2011.

[0052] Further, the connecting rod 202 is an L-shaped steel, and the connecting rods 202 in each pair of connecting rods 202 are respectively welded to the upper and lower main rods 2011.

[0053] Further, more than 3 mounting holes 2013 are formed in the main rod 2011. The mounting holes 2013 are polygonal holes that penetrate the main rod 2011 and are evenly distributed along the length direction of the support frame 2. The hook 6 includes: an L-shaped rod 601, the diameter of the L-shaped rod 601 is greater than the diameter of the circumcircle of the mounting hole 2013; a mounting rod 602, the mounting rod 602 is a polygon matching the mounting hole 2013. One end of the mounting rod 602 is welded to the short side of the L-shaped rod 601, and the central axis of the mounting rod 602 coincides with the central axis of the short side of the L-shaped rod 601. The length of the mounting rod 602 is less than the length of the mounting hole 2013; a screw rod 603, the screw rod 603 is welded to the end of the mounting rod 602 away from the L-shaped rod 601, the central axis of the screw rod 603 coincides with the central axis of the mounting rod 602, and the diameter of the screw rod 603 is less than the diameter of the inscribed circle of the mounting hole 2013.

[0054] Among them, the hook 6 is detachably mounted on the support frame 2 by inserting the mounting rod 602 into the mounting hole 2013 and using a bolt to threadedly connect to the screw rod 603.

[0055] A method for using the device, the method includes the following steps:

[0056] S1. Weld multiple economizers into an economizer group 3 on the ground in advance;

[0057] S2. Place the support frame 2 on the upper surface of the economizer group 3 and make the support frame 2 centered in the up-down direction and centered in the left-right direction on the economizer group 3;

[0058] S3. Place the long side of the L-shaped rod 601 of the hook 6 under the pipeline of the economizer group 3, insert the mounting rod 602 of the hook 6 into the mounting hole 2013, and use a bolt to threadedly connect to the screw rod 603 to fix the hook 6 symmetrically left and right on the main rod 2011. There are more than 3 pairs of hooks 6, and the hooks 6 are evenly distributed along the length direction of the main rod 2011;

[0059] S4. Bolt the two ends of the lifting rope 4 to the left and right sides of the support frame 2 symmetrically left and right. The two ends of the lifting rope 4 are symmetrically left and right, and the connection points of the lifting rope 4 and the support frame 2 are located between the upper end and the midpoint of the support frame 2;

[0060] S5. Hang the middle part of the lifting rope 4 on the hook 104;

[0061] S6. Bolt the upper ends of the two control ropes 5 to the left and right sides of the support frame 2 symmetrically left and right respectively;

[0062] S7. Control the crane 1 to lift, and at the same time apply a pulling force to the two control ropes 5 to control the inclination and orientation of the economizer group 3, so that the upper end of the economizer group 3 is located at the specified installation point;

[0063] S8. Fix the upper end of the economizer group 3 through a pulley block and fine-tune the height of the economizer through the pulley block;

[0064] S9. Slowly release the tension of the control rope 5 to align the economizer group 3 vertically;

[0065] S10. Weld the economizer group 3;

[0066] S11. Control the crane 1 to lower the hook 104, and the support frame 2 slides downward under the action of gravity to disengage the hook 6 from the economizer group 3.

[0067] The advantages of the present invention are as follows:

[0068] 1) When the present invention is used, first weld multiple economizers, and then hang the welded economizer group 3 on the hook 6 of the support frame 2. The support frame 2 plays a role in reducing the deformation of the economizer group 3 during the hoisting process. Then use the crane 1 to lift the upper part of the support frame 2 through the lifting rope 4, making the upper part of the crane 1 face upward. At the same time, control the inclination and orientation of the economizer group 3 through the control rope 5, so as to achieve the purpose of pre-welding the economizer on the ground and then hoisting it to the boiler frame for installation. The number of high-altitude welding points is significantly reduced, and the work efficiency is improved;

[0069] 2) Through the cooperation of the main frame body 201 and the connecting rod 202, the main frame body 201 and the connecting rod 202 form multiple I-shaped structures. The I-shaped structure has high structural strength, ensuring the overall rigidity of the support frame 2;

[0070] 3) By connecting the main rod 2011 and the fixing rod 2012 to form the main rod 2011, the main rod 2011 and the fixing rod 2012 form multiple I-shaped structures. The I-shaped structure has high structural strength, ensuring the overall rigidity of the main frame body 201. At the same time, the rectangular hollow formed between the main rod 2011 and the fixing rod 2012 in this structure makes the main frame body 201 lighter;

[0071] 4) By setting the connecting rod 202 as an L-shaped steel, the rigidity of the connecting rod 202 is better;

[0072] 5) Through the cooperation of the mounting rod 602 on the hook 6 and the mounting hole 2013, and using bolts to fix the hook 6 at the same time, the support frame 2 can be placed on the economizer group 3 first, and then the hook 6 is installed, so that the economizer group 3 is hung on the hook 6. This avoids the difficulty of manipulating the heavy support frame 2 to move when the hook 6 is directly fixed on the support frame 2 to make the hook 6 hang on the economizer group 3. At the same time, the cooperation of the polygonal mounting rod 602 and the mounting hole 2013 makes the hook 6 not rotate in the mounting hole 2013, resulting in the economizer group 3 disengaging from the hook 6;

[0073] 6) In the present invention, multiple economizers are first assembled into an economizer group 3 on the ground, and then the economizer group 3 is hoisted to a high position on the boiler frame for installation. This method significantly reduces the number of high-altitude welding points and improves work efficiency. During the hoisting process, the welded economizer group 3 is hung on the hook 6 of the support frame 2. The support frame 2 plays a role in reducing the deformation of the economizer group 3 during hoisting. Then, a crane 1 hoists the upper part of the support frame 2 through a lifting rope 4, making the upper part of the crane 1 face upward. At the same time, the inclination and orientation of the economizer group 3 are controlled through a control rope 5, so as to achieve the purpose of pre-welding the economizer on the ground and then hoisting it to the boiler frame for installation. The economizer installation method used in the present invention has fewer high-altitude welding points, higher efficiency, and will not cause bending damage to the economizer during the hoisting process.

[0074] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A hoisting method using a economizer hoisting device, the device comprising: A crane (1), the crane (1) includes a body (101), a boom (102), an electric hoist (103) and a hook (104). The boom (102) is connected to the body (101). An electric hoist (103) is provided at the upper end of the boom (102). The hook (104) is connected to the electric hoist (103) through a steel wire rope. A support frame (2), the length of the support frame (2) is greater than the length when more than 2 economizers are welded together up and down. At least 3 pairs of hooks (6) are detachably connected to the support frame (2). The hooks (6) are evenly distributed along the length direction of the support frame (2). Each pair of hooks (6) is symmetrically distributed left and right. The opening direction of the hook (6) faces upward. A lifting rope (4), both ends of the lifting rope (4) are fixedly connected to the left and right sides of the support frame (2). Both ends of the lifting rope (4) are symmetrically distributed left and right. The connection points of the lifting rope (4) and the support frame (2) are located between the upper end and the midpoint of the support frame (2). The middle part of the lifting rope (4) is hung on the hook (104). A control rope (5), the control rope (5) includes 2 ropes. The upper ends of the 2 control ropes (5) are respectively and symmetrically fixedly connected to the support frames (2) on the left and right sides. The support frame (2) includes: Main frame bodies (201), the number of the main frame bodies (201) is 2, and the main frame bodies (201) are symmetrically distributed left and right. The main frame body (201) includes: Main rods (2011), the number of the main rods (2011) is 2, and the two main rods (2011) are symmetrically distributed up and down. More than 3 mounting holes (2013) are formed on the main rod (2011), and the mounting holes (2013) are polygonal holes. The hook (6) includes: An L-shaped rod (601), the diameter of the L-shaped rod (601) is greater than the diameter of the circumcircle of the mounting hole (2013). A mounting rod (602), the mounting rod (602) is a polygon matching the mounting hole (2013). One end of the mounting rod (602) is fixedly connected to the short side of the L-shaped rod (601). The central axis of the mounting rod (602) coincides with the central axis of the short side of the L-shaped rod (601). The length of the mounting rod (602) is less than the length of the mounting hole (2013). A screw rod (603), the screw rod (603) is fixedly connected to the end of the mounting rod (602) away from the L-shaped rod (601). The central axis of the screw rod (603) coincides with the central axis of the mounting rod (602). The diameter of the screw rod (603) is less than the diameter of the inscribed circle of the mounting hole (2013). Among them, the hook (6) is detachably installed on the support frame (2) by inserting the mounting rod (602) into the mounting hole (2013) and using a bolt to threadedly connect to the screw rod (603). It is characterized in that the hoisting method using the device includes the following steps: S1. Weld multiple economizers into an economizer group (3) on the ground in advance. S3. Place the support frame (2) on the upper surface of the economizer group (3), and make the support frame (2) centered in the up and down direction and centered in the left and right direction on the economizer group (3). S3. Place the long side of the L-shaped rod (601) of the hook (6) under the pipeline of the economizer group (3). Insert the mounting rod (602) of the hook (6) into the mounting hole (2013), and symmetrically fix the hook (6) on the main rod (2011) on the left and right using bolts threaded onto the screw rod (603). There are more than 3 pairs of hooks (6), and the hooks (6) are evenly distributed along the length direction of the main rod (2011). S4. Fix both ends of the lifting rope (4) to the left and right sides of the support frame (2). Both ends of the lifting rope (4) are symmetric on the left and right, and the connection points of the lifting rope (4) and the support frame (2) are located between the upper end and the midpoint of the support frame (2). S5. Hang the middle part of the lifting rope (4) on the hook (104). S6. Fix the upper ends of the two control ropes (5) symmetrically on the left and right support frames (2) respectively. S7. Control the crane (1) to lift, and at the same time apply tension to the two control ropes (5) to control the inclination and orientation of the economizer group (3) so that the upper end of the economizer group (3) is located at the specified installation point. S8. Fix the upper end of the economizer group (3) through a pulley block and fine-tune the height of the economizer through the pulley block. S9. Slowly release the tension of the control rope (5) to straighten the economizer group (3) in the vertical direction. S10. Weld the economizer group (3). S11. Control the crane (1) to lower the hook (104), and the support frame (2) slides down under the action of gravity so that the hook (6) disengages from the economizer group (3).

2. The hoisting method using the economizer hoisting device according to claim 1, characterized in that The support frame (2) further includes: Connecting rods (202). There are more than 5 pairs of connecting rods (202). Each pair of connecting rods (202) is symmetrically distributed in the front and rear directions. The connecting rods (202) are evenly distributed along the length direction of the main frame body (201). Both ends of the connecting rods (202) are respectively fixedly connected to the left and right main frame bodies (201). The length direction of the connecting rods (202) is perpendicular to the length direction of the main frame body (201).

3. The hoisting method using the economizer hoisting device according to claim 2, characterized in that The main frame body (201) further includes: Fixed rods (2012). There are more than 3 fixed rods (2012). Both ends of the fixed rods (2012) are respectively fixedly connected to the upper and lower main rods (2011). The fixed rods (2012) are evenly distributed along the length direction of the main rod (2011).

4. The hoisting method using the economizer hoisting device according to claim 3, characterized in that The connecting rod (202) is an L-shaped steel, and the connecting rods (202) in each pair of connecting rods (202) are respectively fixedly connected to the upper and lower main rods (2011).

5. The hoisting method using the economizer hoisting device according to claim 3, characterized in that The mounting hole (2013) penetrates the main rod (2011), and the mounting holes (2013) are evenly distributed along the length direction of the support frame (2).

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