Derrick mast of auxiliary hoisting tool during maintenance of tower crane

Abstract

The utility model relates to the technical field of auxiliary hoisting tools, in particular to a derrick mast of an auxiliary hoisting tool during maintenance of a tower crane. A lead screw nut is installed in the second square long tube, a lead screw nut is synchronously installed in the first square long tube, a lead screw used for being matched with the lead screw nut to control the first square long tube and the second square long tube to be close to each other is installed at one end of the lead screw nut, and an anti-skid plate is installed at the upper end of the second square long tube. A reinforcing plate for increasing the strength of the derrick mast is mounted at the upper end of the anti-skid plate. When hoisting needs to be carried out, a second cargo boom is clamped into a second U-shaped clamping groove firstly, a lead screw is rotated, a lead screw nut drives a first square tube long pipe and a second square tube long pipe to be away from each other, a first U-shaped clamping groove is clamped into the first cargo boom, limiting of a derrick mast is completed, a first bolt is screwed, and a reinforcing plate is limited by an anti-skid plate; and the second square long tube, the antiskid plate and the reinforcing plate are fixed together, so that goods can be hoisted through a chain block.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary lifting tools, in particular to a lifting rod of an auxiliary lifting tool during the repair and maintenance of a tower crane. Background Art

[0002] Tower cranes are the most widely used lifting equipment in the construction industry, and daily maintenance is essential. When cranes cannot be used to lift on tower cranes, jibs are often used for vertical transportation of high-rise buildings.

[0003] Since the maximum lifting height of a tower crane can only reach the platform on the tower crane frame, the tools and materials used for routine maintenance need to be manually transported to above the tower crane's rotation point, which is time-consuming and labor-intensive.

[0004] Therefore, a lifting tool that is convenient for carrying tools and materials is needed. Utility Model Content

[0005] In order to solve the problem that manual handling of tools and materials is time-consuming and labor-intensive as mentioned in the above background technology, the present invention provides the following technical solutions:

[0006] A lifting rod for assisting lifting tools during tower crane maintenance, comprising a first square full-length tube and a second square full-length tube;

[0007] A first square through short tube is installed at the left end of the first square through long tube, and the first square through long tube cooperates with the two first square through short tubes to form a U-shaped slot 1 opening to the left.

[0008] A second square tube is installed at the left end of the second square tube, and the second square tube cooperates with two second square tubes to form a U-shaped slot 2 opening downward, and a hand winch for lifting goods is installed at the right end of the second square tube.

[0009] A lead screw nut is installed inside the second square full-length tube, and a lead screw nut is installed inside the first square full-length tube synchronously, and a lead screw is installed at one end of the lead screw nut for cooperating with the lead screw nut to control the first square full-length tube and the second square full-length tube to approach each other.

[0010] An anti-skid plate is installed at the upper end of the second square full-length tube, and a reinforcement plate for increasing the strength of the pick rod is installed at the upper end of the anti-skid plate, and the anti-skid plate is used to prevent the reinforcement plate from slipping. A bolt 1 for locking the screw nut, the anti-skid plate and the reinforcement plate is installed at the upper end of the second square full-length tube.

[0011] Furthermore, a threaded hole is provided at the upper end of the lead screw nut for locking the lead screw nut with a bolt.

[0012] Furthermore, a regular hexagonal block is installed in the middle of the screw for cooperating with a wrench to control the rotation of the screw, and limit plates are installed at both ends of the screw for limiting the screw, and bolt 2 for locking the limit plate is installed in the middle of the limit plate.

[0013] Furthermore, a limiting hole is provided in the middle of the anti-slide plate for cooperating with a pair of bolts to limit the anti-slide plate, and a strip-shaped protrusion is installed at the upper end of the limiting hole.

[0014] Furthermore, both ends of the reinforcing plate are provided with limiting grooves for the sliding of bolt 1, and the lower end of the reinforcing plate is provided with strip protrusion 2 for cooperating with strip protrusion 1 to lock the reinforcing plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When lifting is required, first insert the U-shaped slot 2 into the second lifting arm, rotate the screw so that the screw nut drives the first square full-length tube and the second square full-length tube to move away from each other, insert the U-shaped slot 1 into the first lifting arm to limit the pulling rod, tighten the bolt 1 to limit the anti-skid plate to the reinforcement plate, fix the second square full-length tube, the anti-skid plate and the reinforcement plate together, and then the goods can be lifted by the hand winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model pick rod;

[0018] Figure 2 For this utility model Figure 1 A magnified image of point A;

[0019] Figure 3 It is a structural schematic diagram of the screw nut of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the lead screw of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the anti-skid plate of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the reinforcement plate of the utility model.

[0023] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0024] 100-first square long tube, 110-first square short tube, 111-first reinforcing rib;

[0025] 200-second square long tube, 210-second square short tube, 211-second reinforcing rib, 220-hand chain hoist, 230-bolt 1, 231-gasket;

[0026] 300-screw nut, 310-threaded hole;

[0027] 400-screw, 410-hexagonal block, 420-limiting plate, 421-bolt 2;

[0028] 500-anti-skid plate, 510-limiting hole, 520-strip protrusion one;

[0029] 600 - reinforcement plate, 610 - limiting groove, 620 - strip-shaped protrusion 2. DETAILED DESCRIPTION

[0030] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0031] See also Figure 1-Figure 6 The utility model provides a lifting rod for auxiliary lifting tools during tower crane maintenance, including a first square full-length tube 100, a second square full-length tube 200, a screw nut 300, a screw 400, an anti-slip plate 500 and a reinforcing plate 600. The screw 400 cooperates with the screw nut 300 to control the first square full-length tube 100 and the second square full-length tube 200 to approach each other or move away from each other, so as to facilitate adjustment according to the distance between the two lifting arms, so that the first U-shaped slot is inserted into the first lifting arm, and the second U-shaped slot is inserted into the second lifting arm. The connection strength of the first square full-length tube 100 and the second square full-length tube 200 is increased by setting the reinforcing plate 600, and the anti-slip plate 500 is used to prevent the reinforcing plate 600 from slipping.

[0032] According to the attached drawings of the specification Figure 1 It can be known that two first square through tubes 110 are fixedly installed on the left end of the first square through tube 100, one of the first square through tubes 110 is vertically arranged, and its upper end is fixedly welded to the first square through tube 100, and triangular first reinforcing ribs 111 are fixedly welded on both sides of the connection between the first square through tube 110 and the first square through tube 100, the second first square through tube 110 is horizontally arranged, and its right end is fixedly welded to the lower end of the first first square through tube 110, and the two first square through tubes 110 are reinforced by the first reinforcing ribs 111, and the first square through tube 100 cooperates with the two first square through tubes 110 to form a U-shaped groove opening to the left, which is convenient for engaging with the first lifting arm.

[0033] The left end of the second square through tube 200 is fixedly welded with a second square through tube 210. Figure 1It can be known that the two second square tubes 210 are arranged vertically, and the second reinforcing ribs 211 for reinforcing the second square tubes 200 and the second square tubes 210 are welded at the connection between the second square tubes 210 and the second square tubes 200. The second square tubes 200 cooperate with the two second square tubes 210 to form a U-shaped slot 2 with an opening downward, which is convenient for engaging with the second lifting arm. The right end of the second square tube 200 is fixedly installed with a hand chain hoist 220 for lifting goods. After the installation of the pull rod is completed, the goods can be lifted and transported by the hand chain hoist 220. The upper end of the second square tube 200 is installed with a bolt 230 for locking the screw nut 300, the anti-slip plate 500 and the reinforcement plate 600. The upper end of the bolt 230 is sleeved with a gasket 231, and the gasket 231 is at the upper end of the reinforcement plate 600.

[0034] A lead screw nut 300 is placed inside the second square through-length tube 200, and a lead screw nut 300 is installed inside the first square through-length tube 100 simultaneously, so that the lead screw nuts 300 are distributed at both ends of the lead screw 400, and a threaded hole 310 is opened at the upper end of the lead screw nut 300 for locking the lead screw nut 300 with the bolt 230, and there are four threaded holes 310, and two are respectively set at the left and right ends of the lead screw nut 300. When the lead screw nut 300 is inserted into the inner cavity of the second square through-length tube 200, the threaded hole 310 and the hole opened on the second square through-length tube 200 are locked. The first square tube 100 and the second square tube 200 are aligned with each other, and the bolt 230 is rotated into the groove of the threaded hole 310. The bolt 230 at the right end of the screw nut 300 is tightened first, and the screw nut 300 is tightened so that the screw nut 300 is not easy to shake. The bolt 230 at the left end of the screw nut 300 is not allowed to be tightened, so that when the spacing between the first square tube 100 and the second square tube 200 is adjusted, the bolt 230 can slide in the groove of the limit groove 610. After the final adjustment is completed, the bolt 230 is tightened to lock the reinforcement plate 600. When installing the screw nut 300 inside the first square tube 100, the bolt 230 away from the regular hexagonal block 410 is tightened first. After the final adjustment is completed, the bolt 230 close to the regular hexagonal block 410 is tightened.

[0035] A lead screw 400 is installed at one end of the lead screw nut 300 for cooperating with the lead screw nut 300 to control the first square through-length tube 100 and the second square through-length tube 200 to approach each other. A regular hexagonal block 410 is fixedly installed in the middle of the lead screw 400 for cooperating with a wrench to control the rotation of the lead screw 400. Limit plates 420 for limiting the lead screw 400 are installed at both ends of the lead screw 400. A bolt 2 421 for locking the limit plate 420 is installed in the middle of the limit plate 420. Threaded holes are provided at both ends of the lead screw 400. When the limit plate 420 is locked, the bolt 2 421 passes through the middle hole of the limit plate 420 and is inserted into the threaded hole at one end of the lead screw 400 to lock the limit plate 420. When the hexagonal block 410 is rotated using a wrench, the lead screw 400 is synchronously driven to rotate, so that the lead screw nuts 300 at both ends of the lead screw 400 are moved closer to or away from each other, and the first square full-length tube 100 and the second square full-length tube 200 are synchronously driven to move closer to or away from each other. During specific installation, the U-shaped slot 2 is first inserted into the second lifting arm, and the lead screw 400 is rotated, so that the lead screw nut 300 drives the first square full-length tube 100 and the second square full-length tube 200 to move away from each other, and the U-shaped slot 1 is inserted into the first lifting arm to complete the limiting of the lifting rod.

[0036] An anti-skid plate 500 is installed at the upper end of the second square full-length tube 200, and a limiting hole 510 is opened in the middle of the anti-skid plate 500 for cooperating with a bolt 230 to limit the anti-skid plate 500. A strip protrusion 520 is fixedly installed at the upper end of the limiting hole 510. Anti-skid plate 500 and reinforcement plate 600 are installed at both the upper and lower ends of the second square full-length tube 200, and the anti-skid plate 500 is synchronously installed at the lower end of the first square full-length tube 100.

[0037] A reinforcing plate 600 for increasing the strength of the pick rod is installed at the upper end of the anti-slip plate 500, and the anti-slip plate 500 is used to prevent the reinforcing plate 600 from slipping. Limiting grooves 610 for the sliding of bolts 230 are provided at both ends of the reinforcing plate 600, so as to facilitate the distance adjustment between the first square through-length tube 100 and the second square through-length tube 200. A strip protrusion 2 620 for cooperating with the strip protrusion 1 520 to lock the reinforcing plate 600 is installed at the lower end of the reinforcing plate 600. When the bolt 230 close to one end of the regular hexagonal block 410 is rotated, the reinforcing plate 600 is moved closer to the anti-slip plate 500, and the strip protrusion 2 620 and the strip protrusion 1 520 are engaged, so that the reinforcing plate 600 is not easy to shift.

[0038] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A lifting rod for auxiliary lifting tools during tower crane maintenance, comprising a first square full-length tube (100) and a second square full-length tube (200), characterized in that: A first square through tube (110) is installed at the left end of the first square through tube (100), and the first square through tube (100) cooperates with the two first square through tubes (110) to form a U-shaped slot 1 opening to the left; A second square tube (210) is installed at the left end of the second square tube (200), and the second square tube (200) cooperates with two second square tubes (210) to form a second U-shaped slot opening downward, and a hand chain hoist (220) for lifting goods is installed at the right end of the second square tube (200); A lead screw nut (300) is installed inside the second square full-length tube (200), and a lead screw nut (300) is synchronously installed inside the first square full-length tube (100), and a lead screw (400) is installed at one end of the lead screw nut (300) for cooperating with the lead screw nut (300) to control the first square full-length tube (100) and the second square full-length tube (200) to approach each other; The upper end of the second square full-length tube (200) is installed with an anti-skid plate (500), and the upper end of the anti-skid plate (500) is installed with a reinforcing plate (600) for increasing the strength of the pick rod, and the anti-skid plate (500) is used to prevent the reinforcing plate (600) from slipping. The upper end of the second square full-length tube (200) is installed with a bolt (230) for locking the screw nut (300), the anti-skid plate (500) and the reinforcing plate (600).

2. The lifting rod of the auxiliary lifting tool during tower crane maintenance according to claim 1 is characterized by: The upper end of the lead screw nut (300) is provided with a threaded hole (310) for cooperating with a bolt 1 (230) to lock the lead screw nut (300).

3. The lifting rod of the auxiliary lifting tool during tower crane maintenance according to claim 1 is characterized by: A regular hexagonal block (410) is installed in the middle of the lead screw (400) for cooperating with a wrench to control the lead screw (400) to rotate, and a limit plate (420) is installed at both ends of the lead screw (400) for limiting the lead screw (400), and a bolt 2 (421) is installed in the middle of the limit plate (420) for locking the limit plate (420).

4. The lifting rod of the auxiliary lifting tool during tower crane maintenance according to claim 1 is characterized by: A limiting hole (510) is provided in the middle of the anti-slip plate (500) for cooperating with a bolt (230) to limit the anti-slip plate (500), and a strip-shaped protrusion (520) is installed at the upper end of the limiting hole (510).

5. The lifting rod of the auxiliary lifting tool during tower crane maintenance according to claim 4 is characterized by: The two ends of the reinforcing plate (600) are provided with limiting grooves (610) for the bolt 1 (230) to slide, and the lower end of the reinforcing plate (600) is provided with a strip protrusion 2 (620) for cooperating with the strip protrusion 1 (520) to lock the reinforcing plate (600).

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