An auxiliary hoisting tool for installation of an electric single-beam crane

Abstract

The present application relates to the technical field of crane installation, in particular to a kind of auxiliary hoisting tool for electric single-beam crane installation, two the auxiliary hoisting tool is a set, the auxiliary hoisting tool includes square steel, two clamps for being fixed with same track beam, hoist is arranged on each described clamp, the output end of hoist is detachably connected with square steel, connecting structure is fixedly installed on the square steel, the connecting structure includes fixed connection with square steel for the column of main beam heightening, the height of column is greater than the length of hoist itself. By setting column, and the height of column is greater than the length of hoist itself, after main beam is fixed on square steel, it is effectively raised, main beam and end beam can be lifted to installation position once in hoisting process, without temporary support and secondary lifting, eliminate the security risk existing in traditional hoisting mode, while greatly saving manpower and material resources.

Description

Technical Field

[0001] This invention relates to the field of crane installation technology, specifically to an auxiliary lifting tool for the installation of an electric single-girder crane. Background Technology

[0002] An electric single-girder crane mainly consists of a bridge frame, a crane, a traveling mechanism, and an electrical control system. The bridge frame is the load-bearing skeleton of the crane, composed of a main beam and end beams, reliably connected by high-strength bolts or pins. The crane, as the core lifting component, is suspended on the main beam, enabling both vertical lifting and lateral movement along the main beam for precise positioning of the load in a plane. The traveling mechanism includes a trolley traveling mechanism and a crane traveling mechanism. The trolley traveling mechanism drives the entire machine longitudinally along the factory rails via drive wheels, while the crane traveling mechanism drives the crane laterally along the main beam. The electrical system provides centralized control of the entire machine through an electrical control cabinet and is equipped with safety protection devices such as lifting limit switches and trolley travel limit switches to ensure safe and reliable operation of the crane.

[0003] Traditional electric single-girder cranes use manual hoists to tie the main beam before lifting, which is unsafe. Also, due to the length of the manual hoist, it is impossible to lift the main beam and end beam to the installation position in one go. Temporary supports are required before lifting again, which poses a safety hazard and wastes manpower and resources. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an auxiliary lifting tool for the installation of an electric single-girder crane. Two of the auxiliary lifting tools constitute a set. Each auxiliary lifting tool includes a square steel bar and two clamps for fixing to the same track beam. Each clamp is equipped with a hoist, and the output end of the hoist is detachably connected to the square steel bar. A connecting structure is fixedly installed on the square steel bar. The connecting structure includes a column fixedly connected to the square steel for raising the main beam, the height of which is greater than the length of the hoist itself.

[0005] As a preferred technical solution of the present invention: the clamp includes a shaft, a threaded rod, and two clamps rotatably connected to the shaft. The two clamps are arranged opposite to each other to clamp the lower flange of the track beam. A round rod is rotatably connected inside the clamp. The threaded rod is threadedly connected to the two round rods and the threaded connection direction is opposite. A pry bar is movably connected to the threaded rod.

[0006] As a preferred technical solution of the present invention: the clamp includes a shaft, two clamps rotatably connected to the shaft, and a threaded rod penetrating the two round rods. The two clamps are arranged opposite each other to clamp the lower flange of the track beam. The threaded rod is I-shaped to restrict the round rod from detaching. The threaded rod is threadedly connected to one of the round rods and has a pry bar movably connected to one end.

[0007] As a preferred embodiment of the present invention, the hoist is an electric hoist.

[0008] As a preferred embodiment of the present invention: the auxiliary hoisting tool further includes two worm gear screw jacks, the two worm gear screw jacks are rotatably connected to the two clamps respectively, and the two hoists are respectively installed at the output ends of the two worm gear screw jacks.

[0009] As a preferred embodiment of the present invention: the auxiliary lifting tool further includes a connecting bracket rotatably connected to the two clamps respectively, the two worm gear screw jacks are fixedly connected to the two connecting brackets respectively, a guide rod is fixedly installed on the connecting bracket, and a sliding sleeve slidably connected to the guide rod is fixedly installed at the output end of the worm gear screw jack, the guide rod being parallel to the output direction of the worm gear screw jack.

[0010] As a preferred technical solution of the present invention: lifting rings are fixedly installed on both sides of the top of the square steel, and the output ends of the two hoists are detachably connected to the square steel through the lifting rings.

[0011] As a preferred embodiment of the present invention, the connection structure further includes a mounting base fixedly installed on the top of the column, the mounting base being used to clamp the lower flange of the main beam.

[0012] As a preferred embodiment of the present invention, the connection structure further includes two tie rods located on both sides of the column, one end of each tie rod being fixedly connected to a square steel bar, and the other end of each tie rod being fixedly connected to the same end beam.

[0013] The present invention has the following beneficial effects: 1. By setting up columns with a height greater than the length of the hoist itself, the main beam is effectively raised after being fixed on the square steel. During the lifting process, the main beam and end beam can be raised to the installation position in one go without temporary support or secondary lifting, eliminating the safety hazards of traditional hoisting methods and saving manpower and material resources.

[0014] 2. Two auxiliary hoisting tools are used as a set. Each auxiliary hoisting tool includes two clamps fixed to the same track beam. Each clamp is equipped with a hoist. The output ends of the two hoists are detachably connected to the square steel, which makes the lifting process uniform, stable and reliable, and ensures that the two ends of the main beam rise synchronously, thus improving the hoisting stability.

[0015] 3. The hoist is a manual hoist with a self-locking function, which can stop and lock at any position, avoiding the risk of accidental slippage during lifting and further enhancing construction safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure provided by the present invention.

[0017] Figure 2 This is a structural schematic diagram of a single auxiliary hoisting tool provided by the present invention.

[0018] Figure 3 This is a schematic diagram of the fixture provided by the present invention.

[0019] Appendix Figure 1-3 The structures represented by each label are listed below: 1. Track beam; 2. Fixtures; 21. Shaft; 22. Clamp; 23. Round rod; 24. Threaded rod; 25. Pry bar; 26. Reinforcing post; 3. Hoist; 4. Square steel; 41. Hanging rings; 5. Connection structure; 51. Tie rod; 52. Column; 53. Mounting base; 54. Washer; 6. End beams; 61. Walking mechanism; 7. Main beam; 8. Connecting bracket; 81. Guide rod; 82. Sliding sleeve; 9. Worm gear screw jack; 91. Handwheel; 92. Output screw; 93. Connecting seat. Detailed Implementation

[0020] The principles and features of the present invention are described below. The embodiments given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] It should be noted that when a part or component is considered to be "connected to," "located on," or "assembled" to another part or component, it can be directly mounted on the other part or component, or it may be located in an intermediate part or component. The terms "left," "right," "upper," "lower," and similar expressions used in this document are for illustrative purposes only.

[0022] After careful research and analysis, the applicant discovered that existing electric single-girder cranes in the background technology always require a temporary support frame when using hoist 3 for lifting. This frame is used to support the main beam and end beams when the output end of hoist 3 reaches its maximum height. Then, hoist 3 is removed, and the main beam and end beams are raised manually or with jacks to compensate for the final height difference. The entire lifting process is time-consuming and cumbersome.

[0023] like Figure 1-3 As shown, based on the above concept, this application designs an auxiliary lifting tool for the installation of an electric single-girder crane. Two auxiliary lifting tools form a set, each corresponding to one of the two track beams 1. The two auxiliary lifting tools operate synchronously to lift both ends of the main beam 7. The auxiliary lifting tool includes a square steel bar 4 and two clamps 2 for fixing to the same track beam 1. Each clamp 2 is equipped with a hoist 3. The output end of the hoist 3 is detachably connected to the square steel bar 4. A connecting structure 5 is fixedly installed on the square steel bar 4, and the length direction of the square steel bar 4 is parallel to the length direction of the track beam 1. The clamps 2 are detachably connected to the track beam 1. The distance between the two clamps 2 when connected to the track beam 1 and the distance between the two connection points of the two clamps 2 and the square steel bar 4 should be as equal as possible, so that the steel cable connected to the output end of the hoist 3 runs at a near-vertical angle during lifting. The output end of the hoist 3 is a hook.

[0024] The connecting structure 5 includes a column 52 fixedly connected to the square steel 4 for raising the main beam 7. The height of the column 52 is greater than the length of the hoist 3, so that when the main beam 7 is fixed to the column 52, the distance between the main beam 7 and the square steel 4 is greater than the length of the hoist 3. The column 52 is located in the middle of the square steel 4, and the two hoists 3 are equidistant from the column 52. The two hoists 3 are located on both sides of the column 52, so that the two hoists 3 are evenly stressed when lifting the square steel 4.

[0025] The hoist 3 is a manual hoist with a self-locking function.

[0026] In operation, two auxiliary lifting tools are placed below the two track beams 1, and two square steel bars 4 are positioned parallel to the track beams 1, with the column 52 pointing vertically upwards. The two ends of the main beam 7 are fixed to the column 52, ensuring the main beam 7 is perpendicular to the square steel bars 4, thus raising the height of the main beam 7. Two clamps 2 from one of the auxiliary lifting tools are fixed to the same track beam 1, and the output ends of the two hoists 3 are extended to connect to both sides of the square steel bars 4. Four people simultaneously pull the input end of the hoists 3, causing the square steel bars 4 to rise synchronously. Due to the height difference between the main beam 7 and the square steel bars 4, the movable travel range of the main beam 7 is moved upwards, allowing the end beam 6 to move to the position connecting with the track beam 1. After the end beam 6 is moved into place, a traveling mechanism 61 is installed on the end beam 6. The traveling mechanism 61 clamps the lower flange of the track beam 1 to achieve connection with the track beam 1. The traveling mechanism 61 can drive the end beam 6 and the main beam 7 to move along the length direction of the track beam 1.

[0027] The auxiliary hoisting tools also include two levels, which are detachably connected to the bottom of the end beam 6 or the main beam 7. The two levels are perpendicular to each other, meaning they are parallel to the end beam 6 and the main beam 7, respectively. This allows the angles of the end beam 6 and the main beam 7 to be observed during the lifting process, preventing excessive angles from causing danger.

[0028] Example 1 like Figure 3 As shown, the auxiliary hoisting tool for installing an electric single-girder crane in this embodiment has a basic structure that is basically the same as the auxiliary hoisting tool for installing an electric single-girder crane in this application, the difference being the specific structure of the clamp 2.

[0029] The clamp 2 includes a shaft 21, a threaded rod 24, and two clamps 22 rotatably connected to the shaft 21. The two clamps 22 are positioned opposite each other to clamp the lower flange of the track beam 1. The clamps 22 are in a "7" shape, with the upper part of each clamp positioned above the lower flange of the track beam 1 to hook onto it. The clamps 22 are perpendicular to the shaft 21. A round rod 23 is rotatably connected inside each clamp 22. The round rod 23 is parallel to the shaft 21, and both round rods 23 are at the same height. The threaded rod 24 is threadedly connected to the two round rods 23 in opposite directions, meaning that when the threaded rod 24 rotates, it drives the two round rods 23 to move closer or further apart simultaneously. A pry bar 25 is movably connected to the threaded rod 24. Specifically, the threaded rod 24 has a through hole, through which the pry bar 25 slides. The two ends of the pry bar 25 are spherical, with a diameter larger than the diameter of the through hole, preventing the pry bar 25 from detaching from the threaded rod 24. The pry bar 25 is perpendicular to the threaded rod 24, making it easier to rotate the threaded rod 24 by prying the pry bar 25.

[0030] Example 2 For fixture 2, this embodiment adopts a different design scheme than embodiment one. The difference between this embodiment and embodiment one is as follows: The clamp 2 includes a shaft 21, two clamps 22 rotatably connected to the shaft 21, and a threaded rod 24 passing through two round rods 23. The two clamps 22 are arranged opposite each other to clamp the lower flange of the track beam 1. The threaded rod 24 is I-shaped to prevent the round rods 23 from disengaging. The threaded rod 24 is threadedly connected to one of the round rods 23, and a pry bar 25 is movably connected to one end. That is, the threaded rod 24 is only threadedly connected to one of the round rods 23. When the threaded rod 24 is rotated by the pry bar 25, one clamp 22 is moved closer to or away from the other clamp 22, thus achieving the clamping function.

[0031] Example 3 like Figure 1-3 As shown, the auxiliary hoisting tool for installing an electric single-girder crane in this embodiment has a basic structure that is basically the same as the auxiliary hoisting tool for installing an electric single-girder crane in this application. The difference lies in the selection of the hoist 3 and the different schemes adopted for different types of hoists 3.

[0032] The lifting hoist 3 is an electric hoist. While this makes operation more labor-saving, its controllable precision is lower than that of a manual hoist. Therefore, in the final fine-tuning stage—that is, adjusting the height of the end beam 6 to align the traveling mechanism 61 with the track beam 1—it is difficult to achieve the required precision using only an electric hoist, often requiring multiple adjustments up and down. Therefore, further improvements are needed to address the issue of the electric hoist 3.

[0033] The auxiliary lifting tools also include two worm gear screw jacks 9, which are rotatably connected to two clamps 2 respectively. Two hoists 3 are respectively installed at the output ends of the two worm gear screw jacks 9. Each worm gear screw jack 9 includes a handwheel 91 and an output screw 92. The handwheel 91 is the input end of the worm gear screw jack 9, and the output screw 92 is the output end. The worm gear screw jack 9 has a self-locking function. When the handwheel 91 is turned, the output screw 92 is driven to move up and down after being transmitted through the worm gear reduction mechanism inside the worm gear screw jack 9.

[0034] The auxiliary lifting tools also include connecting brackets 8 rotatably connected to the two clamps 2, and two worm gear screw jacks 9 fixedly connected to the two connecting brackets 8 respectively. The bottom of the connecting bracket 8 is open, and the worm gear screw jacks 9 are located inside the connecting bracket 8. The top of the connecting bracket 8 is rotatably connected to both ends of the shaft 21 to keep the connecting bracket 8 balanced. It should be noted that there should be a gap between the top of the worm gear screw jack 9 and the inner top wall of the connecting bracket 8, and the gap should not be less than the lifting range of the output screw 92, so that the output screw 92 will not be blocked by the connecting bracket 8 when it rises. A guide rod 81 is fixedly installed on the connecting bracket 8, and a sliding sleeve 82 that is slidably connected to the guide rod 81 is fixedly installed at the output end of the worm gear screw jack 9. The guide rod 81 is parallel to the output direction of the worm gear screw jack 9. That is, the length direction of the guide rod 81 is parallel to the length direction of the output screw 92, and the sliding sleeve 82 slides along the length direction of the guide rod 81. Specifically, each connecting bracket 8 includes two guide rods 81, which are located on opposite sides of the output screw 92 to help stabilize the output screw 92 and prevent the hoist 3 from causing the output screw 92 to shake during operation.

[0035] Even better, a connecting seat 93 is fixedly mounted on the bottom of the output screw 92. The connecting seat 93 has mounting holes, through which the top hook / handle of the hoist 3 can be detachably connected to the worm gear screw jack 9. This improves both connection stability and ease of assembly / disassembly. Furthermore, the sliding sleeve 82 can be fixedly connected to the output screw 92 by being fixedly connected to the connecting seat 93.

[0036] During the hoisting process, in the final fine-tuning stage, the workers installing the traveling mechanism 61 can rotate the handwheel 91 to raise and lower the hoist 3, square steel 4, end beam 6, and main beam 7 together, so as to fine-tune the height of the end beam 6 and move the traveling mechanism 61 to the position that matches the track beam 1, without having to repeatedly adjust the electric hoist.

[0037] Example 4 like Figure 2 As shown, the auxiliary hoisting tool for installing an electric single-girder crane in this embodiment has a basic structure that is basically the same as the auxiliary hoisting tool for installing an electric single-girder crane in this application, except that the square steel 4 has a specific structure.

[0038] Lifting rings 41 are fixedly installed on both sides of the top of the square steel 4. The output ends of the two hoists 3 are detachably connected to the square steel 4 through the lifting rings 41, making disassembly and assembly more convenient and quick.

[0039] Example 5 like Figure 2As shown, the auxiliary hoisting tool for installing an electric single-girder crane in this embodiment has a basic structure that is basically the same as the auxiliary hoisting tool for installing an electric single-girder crane in this application, the difference being the specific structure of the connection structure 5.

[0040] The connecting structure 5 also includes a mounting base 53 fixedly installed on the top of the column 52. The mounting base 53 is used to clamp the lower flange of the main beam 7. A rubber pad is fixedly installed inside the mounting base 53. The rubber pad contacts the lower flange of the main beam 7 to prevent the mounting base 53 from abrading the main beam 7. The mounting base 53 includes a base plate and two flip plates rotatably connected to both ends of the base plate. The two flip plates flip up to cooperate with the base plate to clamp the lower flanges of the main beam 7 on both sides. The flip plates are fixed to the base plate with bolts and nuts to clamp and fix the main beam 7.

[0041] The connecting structure 5 also includes two tie rods 51 located on both sides of the column 52. One end of each tie rod 51 is fixedly connected to the square steel 4, and the other end is used to fixally connect to the same end beam 6. The two tie rods 51 are parallel to each other and parallel to the column 52. The end beam 6 itself has a vertically connected gap, and the diameter of the tie rod 51 is smaller than the width of the gap, allowing the tie rod 51 to extend through the gap to the top of the end beam 6. The tie rod 51 passes through the square steel 4, and each tie rod 51 is threaded with four nuts, two of which are used to clamp the square steel 4 for fixation, and the other two nuts are used to clamp the end beam 6 for fixation.

[0042] Specifically, washers are placed between the nut and the square steel 4 and between the nut and the end beam 6. The washers can be fitted with the tie rod 51 to be used in conjunction with the nut.

[0043] In this application, all devices and components whose structures are not described are commercially available devices or components.

[0044] In summary: By setting up column 52, with its height exceeding the length of the hoist 3, the main beam 7 is effectively elevated after being fixed to the square steel 4. During lifting, the main beam 7 and end beam 6 can rise to the installation position in one go, eliminating the need for temporary supports and secondary lifting. This eliminates the safety hazards associated with traditional lifting methods and significantly saves manpower and resources. Two auxiliary lifting tools are used as a set. Each tool includes two clamps 2 fixed to the same track beam 1, with a hoist 3 mounted on each clamp 2. The output ends of the two hoists 3 are detachably connected to the square steel 4, ensuring uniform, stable, and reliable force distribution during lifting. This guarantees synchronous lifting of both ends of the main beam 7, improving lifting stability. The hoist 3 is a manual hoist with a self-locking function, capable of stopping and locking at any position, avoiding the risk of accidental slippage during lifting and further enhancing construction safety.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. An auxiliary hoisting tool for installation of an electric single-beam crane, characterized in that: The two auxiliary hoisting tools are a set. The auxiliary hoisting tools include a square steel (4) and two clamps (2) for fixing to the same track beam (1). Each clamp (2) is equipped with a hoist (3). The output end of the hoist (3) is detachably connected to the square steel (4). A connecting structure (5) is fixedly installed on the square steel (4). The connecting structure (5) includes a column (52) fixedly connected to the square steel (4) for raising the main beam (7), the height of the column (52) being greater than the length of the hoist (3); The auxiliary hoisting tool also includes two worm gear screw jacks (9), which are rotatably connected to two clamps (2) respectively, and two hoists (3) are installed at the output ends of the two worm gear screw jacks (9); The auxiliary hoisting tool also includes a connecting bracket (8) that is rotatably connected to the two clamps (2). The two worm gear screw jacks (9) are fixedly connected to the two connecting brackets (8). A guide rod (81) is fixedly installed on the connecting bracket (8). A sliding sleeve (82) that is slidably connected to the guide rod (81) is fixedly installed at the output end of the worm gear screw jack (9). The guide rod (81) is parallel to the output direction of the worm gear screw jack (9). Lifting rings (41) are fixedly installed on both sides of the top of the square steel (4), and the output ends of the two hoists (3) are detachably connected to the square steel (4) through the lifting rings (41). The connecting structure (5) also includes a mounting base (53) fixedly installed on the top of the column (52), the mounting base (53) being used to clamp the lower flange of the main beam (7); The connection structure (5) also includes two tie rods (51) located on both sides of the column (52). One end of each tie rod (51) is fixedly connected to the square steel (4), and the other end of each tie rod (51) is fixedly connected to the same end beam (6).

2. The auxiliary lifting tool for installing an electric single-girder crane according to claim 1, characterized in that: The clamp (2) includes a shaft (21), a threaded rod (24), and two clamps (22) rotatably connected to the shaft (21). The two clamps (22) are arranged opposite to each other to clamp the lower flange of the track beam (1). A round rod (23) is rotatably connected inside the clamp (22). The threaded rod (24) is threadedly connected to the two round rods (23) in opposite directions. A pry bar (25) is movably connected to the threaded rod (24).

3. The auxiliary lifting tool for installing an electric single-girder crane according to claim 1, characterized in that: The clamp (2) includes a shaft (21), two clamps (22) rotatably connected to the shaft (21), and a threaded rod (24) passing through two round rods (23). The two clamps (22) are arranged opposite to each other to clamp the lower flange of the track beam (1). The threaded rod (24) is I-shaped to restrict the round rods (23) from disengaging. The threaded rod (24) is threaded to one of the round rods (23) and has a pry bar (25) movably connected to one end.

4. The auxiliary lifting tool for installing an electric single-girder crane according to claim 1, characterized in that: The hoist (3) is an electric hoist.

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