Tower crane foundation bolt leveling device and construction method

Abstract

The invention discloses a tower crane foundation bolt leveling device and a construction method, and relates to the technical field of mechanical equipment installation, the tower crane foundation bolt leveling device comprises a U-shaped embedded bolt, and a leveling assembly is arranged at the bottom of the U-shaped embedded bolt; according to the U-shaped embedded bolt leveling device, the groove is formed, the U-shaped embedded bolt is made to be horizontal in the transverse direction, the two first screws on the bottom plate are rotated, the C-shaped plate is leveled through the two adjusting plates and the gradienter, the C-shaped plate levels the U-shaped embedded bolt through the clamping strip and the clamping groove, in other words, the U-shaped embedded bolt is made to be horizontal in the longitudinal direction, and then the U-shaped embedded bolt is leveled conveniently and rapidly; the first screw is fixed through tension formed by the radial ratchets on the opposite sides of the two gaskets, the wedge-shaped effect can be generated on the bolt head portion of the first screw, and therefore the U-shaped embedded bolt is not prone to loosening after leveling; therefore, the U-shaped embedded bolt is not easy to incline due to impact caused by concrete pouring in the subsequent grouting process.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment installation, in particular to a tower crane anchor bolt leveling device and a construction method. Background Art

[0002] The tower crane will bear huge vertical loads during operation. If the anchor bolts are not level, the connection between the tower crane and the foundation will not be vertical, resulting in uneven vertical force. Some bolts may bear too much pressure, while others may not bear enough force, which may easily cause deformation and breakage of the bolts or uneven settlement of the foundation, seriously affecting the stability of the tower crane. The leveled anchor bolts can ensure the stability of the tower crane in the horizontal direction. If the bolts are not level, the tower crane is prone to tilt when it is subjected to horizontal wind force or horizontal force caused by improper operation. The tower crane must remain vertical, which is essential for the normal operation and safe operation of the tower crane. Uneven anchor bolts will cause the tower to tilt, affecting the lifting performance and working range of the tower crane. Uneven anchor bolts will cause additional vibration and stress in the operation of the tower crane, resulting in loose connections between the various parts of the tower crane and accelerated wear and damage of mechanical parts.

[0003] At present, the method of adjustable screw support is often used in the leveling of tower crane anchor bolts. Although this method can achieve the leveling of bolts to a certain extent, it has the following obvious shortcomings:

[0004] 1. Complex installation process: It is necessary to determine the specifications, quantity, U-shaped groove size and depth of the U-shaped embedded bolts, and other parameters, and the preparation work is cumbersome. At the same time, the process of determining the installation position of the screw support in the U-shaped groove and fixing it is relatively complicated, which may involve expansion bolts or welding, which increases the difficulty and time cost of construction.

[0005] 2. Poor stability: The screw support is installed at the bottom of the U-shaped groove, and its stability is easily affected by many factors. For example, the expansion bolt fixation may become loose over time, and the welding fixation may cause the support to be unstable due to welding quality problems in some cases, which is prone to shaking or displacement during the adjustment process, affecting the leveling effect and the subsequent installation stability of the tower crane.

[0006] 3. Subsequent U-bolts are prone to loosening: When the U-bolts reach a horizontal state, the position of the screw is fixed only by tightening the nut. During the subsequent construction process, especially when impacted by external forces such as concrete pouring, they are prone to loosening, affecting the installation quality and safety of the tower crane.

[0007] In view of this, a tower crane anchor bolt leveling device and a construction method are provided to overcome the above problems. Summary of the invention

[0008] The object of the present invention is to provide a tower crane anchor bolt leveling device and a construction method to solve the problems raised in the above background technology.

[0009] In order to solve the above technical problems, the present invention provides a tower crane anchor bolt leveling device, including a U-shaped embedded bolt, a leveling component is arranged at the bottom of the U-shaped embedded bolt, and the leveling component includes a C-shaped plate located on the base plate and fitted with the U-shaped embedded bolt, and a clamping strip installed on the U-shaped embedded bolt and horizontally slidably connected to the C-shaped plate, adjustment plates are installed at both ends of the C-shaped plate, a first screw threadedly connected to the base plate is inserted on the adjustment plate, two symmetrical gaskets are arranged between the first screw and the adjustment plate, and radial ratchet teeth that match each other are opened on opposite sides of the two adjacent gaskets, and the inclination angle of the radial ratchet teeth is greater than the pitch of the threaded end of the first screw.

[0010] Furthermore, a groove is provided on the top of the base plate, an inner wall of the groove fits with the U-shaped end of the U-shaped embedded bolt, and a second screw is threadedly connected to the inner wall of the groove.

[0011] Furthermore, a slot is provided on the inner wall of the C-shaped plate, the inner wall of the slot is slidably connected to the outer wall of the clamping strip, and the clamping strip and the slot are respectively located at the center of the U-shaped embedded bolt and the C-shaped plate.

[0012] Furthermore, a through slot is formed through the top of the adjustment plate, the inner diameter of the through slot is larger than the outer diameter of the threaded end of the first screw, and the first screw is plugged into the adjustment plate through the through slot.

[0013] Furthermore, radial teeth are formed on opposite sides of two adjacent gaskets.

[0014] The construction method of the tower crane anchor bolt leveling device comprises the following steps:

[0015] Rotate the two first screws on the bottom plate, use the two adjustment plates and the level to level the C-type plate, and use the clamping strip and the clamping slot to level the U-shaped embedded bolts;

[0016] Tightening the first screw causes the radial ratchet teeth on opposite sides of two adjacent washers to form tension, thereby generating a wedge effect on the bolt head of the first screw.

[0017] Furthermore, before leveling, the U-shaped end of the U-shaped embedded bolt is placed in the groove on the bottom plate.

[0018] Furthermore, there is a gap between the adjustment plate and the bottom plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By setting the grooves, the U-shaped embedded bolts placed on the base plate are limited so that they cannot rotate horizontally, ensuring accurate docking during the later installation of the tower crane; and the horizontal base plate makes the U-shaped embedded bolts horizontal along the direction of the grooves, that is, the U-shaped embedded bolts are horizontal.

[0021] Rotate the two first screws on the base plate, level the C-type plate through the two adjustment plates and with a spirit level, and the C-type plate levels the U-shaped embedded bolts through the clamping strips and slots, that is, make the U-shaped embedded bolts horizontal longitudinally, thereby facilitating and quickly leveling the U-shaped embedded bolts.

[0022] During the leveling process, the tension formed by the radial ratchets on the opposite sides of the two washers is used to fix the first screw. Since the inclination angle of the washers is greater than the pitch of the threaded end of the first screw, a wedge effect is generated on the bolt head of the first screw, thereby making it difficult for the U-shaped embedded bolt to loosen after leveling. Therefore, the U-shaped embedded bolt is not easy to be tilted due to the impact caused by the pouring of concrete during the subsequent grouting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the tower crane anchor bolt leveling device of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the clamping strip in the tower crane anchor bolt leveling device of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a C-type plate in a tower crane anchor bolt leveling device of the present invention;

[0026] Figure 4 for Figure 2 A magnified view of the structure at center.

[0027] 1. U-shaped embedded bolts;

[0028] 2. Leveling assembly; 201. Bottom plate; 202. Groove; 203. C-shaped plate; 204. Clip strip; 205. Clip groove; 206. Adjustment plate; 207. First screw; 208. Through groove; 209. Washer; 210. Radial ratchet; 211. Radial teeth;

[0029] 3. The second screw. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 4 , the present invention provides a technical solution:

[0032] See also Figure 1-Figure 4 As shown, the tower crane anchor bolt leveling device includes a U-shaped embedded bolt 1, a leveling component 2 is arranged at the bottom of the U-shaped embedded bolt 1, and the leveling component 2 includes a C-shaped plate 203 located on the bottom plate 201 and fitted with the U-shaped embedded bolt 1 and a clamping strip 204 welded on the U-shaped embedded bolt 1 and horizontally slidably connected to the C-shaped plate 203, a clamping groove 205 is opened on the inner wall of the C-shaped plate 203, and the inner wall of the clamping groove 205 is slidably connected with the outer wall of the clamping strip 204, the clamping strip 204 and the clamping groove 205 are respectively located at the center of the U-shaped embedded bolt 1 and the C-shaped plate 203, the C-shaped plate 203 is clamped with the U-shaped embedded bolt 1 through the clamping strip 204 and the clamping groove 205, and both ends of the C-shaped plate 203 are installed An adjusting plate 206 is installed, and a first screw 207 threadedly connected to the bottom plate 201 is plugged into the adjusting plate 206. A through slot 208 is provided on the top of the adjusting plate 206. The inner diameter of the through slot 208 is larger than the outer diameter of the threaded end of the first screw 207. The first screw 207 is plugged into the adjusting plate 206 through the through slot 208. By providing the through slot 208, it is convenient for the threaded end of the first screw 207 to pass through the adjusting plate 206. Two symmetrical gaskets 209 are provided between the first screw 207 and the adjusting plate 206. The opposite sides of the two adjacent gaskets 209 are provided with radial ratchet teeth 210 that match each other. The inclination angle of the radial ratchet teeth 210 is larger than the thread angle of the first screw 207. The top of the bottom plate 201 is provided with a groove 202, and the inner wall of the groove 202 fits with the U-shaped end of the U-shaped embedded bolt 1. The inner wall of the groove 202 is threadedly connected with a second screw 3, and the second screw 3 is rotated to horizontally level the bottom plate 201; by setting the groove 202, the U-shaped embedded bolt 1 placed on the bottom plate 201 is limited so that it cannot rotate horizontally, ensuring accurate docking during the later installation of the tower crane; and the horizontal bottom plate 201 makes the U-shaped embedded bolt 1 horizontal along the direction of the groove 202, that is, the U-shaped embedded bolt 1 is horizontally horizontal, and the two first screws 207 on the bottom plate 201 are rotated through the two adjustment plates 206 and cooperate with the water The C-shaped plate 203 is leveled by a leveler, and the C-shaped plate 203 levels the U-shaped embedded bolt 1 through the clamping strip 204 and the clamping groove 205, that is, the U-shaped embedded bolt 1 is made horizontal in the longitudinal direction, so as to facilitate and quickly level the U-shaped embedded bolt 1. During the process, the tension formed by the radial ratchet teeth 210 on the opposite side of the two gaskets 209 is used to fix the first screw 207. Because the inclination angle of the gasket 209 is greater than the pitch of the threaded end of the first screw 207, a wedge effect is generated on the bolt head of the first screw 207, so that the U-shaped embedded bolt 1 is not easy to loosen after leveling, so that the U-shaped embedded bolt 1 is not easy to be tilted due to the impact of concrete pouring during the subsequent grouting process.

[0033] Furthermore, radial teeth 211 are provided on the opposite sides of the two adjacent gaskets 209. By providing the radial teeth 211, the friction between the two adjacent gaskets 209 and the bolt head of the first screw 207 and the adjustment plate 206 is increased, so that the first screw 207 is not easy to loosen, thereby ensuring that the U-shaped embedded bolt 1 after leveling is even less likely to loosen.

[0034] The construction method of the tower crane anchor bolt leveling device comprises the following steps:

[0035] Before leveling, place the U-shaped end of the U-shaped embedded bolt 1 in the groove 202 on the horizontal bottom plate 201. The bottom plate 201 can be horizontally leveled in advance by rotating the second screw 3.

[0036] Rotate the two first screws 207 on the bottom plate 201, and use the two adjustment plates 206 and the level meter to level the C-shaped plate 203. The C-shaped plate 203 uses the clamping strip 204 and the clamping slot 205 to level the U-shaped embedded bolts 1.

[0037] Tightening the first screw 207 causes the radial ratchet teeth 210 on the opposite side of the two adjacent gaskets 209 to form tension, and a wedge effect is generated on the bolt head of the first screw 207, thereby preventing the U-shaped embedded bolt 1 from loosening easily after leveling. During the grouting process, the bottom plate 201 is located in the inner template to be grouted, and the inner template is located on the base. When the height of the concrete does not exceed the bottom plate 201, it is poured slowly and is not enough to affect the overall efficiency, so as to avoid the horizontal bottom plate 201 from tilting laterally. After the height of the concrete exceeds the bottom plate 201, grouting can be performed quickly, so that the U-shaped embedded bolt 1 is not easily tilted due to the impact of concrete pouring during the subsequent grouting process. At the same time, due to the existence of the bottom plate 201, after the concrete is poured and formed, the U-shaped embedded bolt 1 is fixed on the bottom plate 201, ensuring that the U-shaped embedded bolt 1 is more stable. Therefore, compared with the existing construction method of the U-shaped embedded bolt 1, the stability of the tower crane is further improved.

[0038] Furthermore, there is a gap between the adjustment plate 206 and the base plate 201 , and the gap is used to conveniently control the distance between the adjustment plate 206 and the base plate 201 by rotating the first screw 207 , thereby facilitating leveling the C-shaped plate 203 and then leveling the U-shaped embedded bolts 1 .

Claims

1. A tower crane anchor bolt leveling device, comprising a U-shaped embedded bolt (1), characterized in that: A leveling assembly (2) is provided at the bottom of the U-shaped embedded bolt (1), and the leveling assembly (2) comprises a C-shaped plate (203) located on the bottom plate (201) and in contact with the U-shaped embedded bolt (1), and a clamping strip (204) installed on the U-shaped embedded bolt (1) and horizontally slidably connected to the C-shaped plate (203). Adjustment plates (206) are installed at both ends of the C-shaped plate (203), and a first screw (207) threadedly connected to the bottom plate (201) is inserted on the adjustment plate (206). Two symmetrical gaskets (209) are provided between the first screw (207) and the adjustment plate (206), and mutually matching radial ratchet teeth (210) are provided on opposite sides of two adjacent gaskets (209), and the inclination angle of the radial ratchet teeth (210) is greater than the pitch of the thread end of the first screw (207).

2. The tower crane anchor bolt leveling device according to claim 1, characterized in that: A groove (202) is provided on the top of the bottom plate (201), the inner wall of the groove (202) is fitted with the U-shaped end of the U-shaped embedded bolt (1), and a second screw (3) is threadedly connected to the inner wall of the groove (202).

3. The tower crane anchor bolt leveling device according to claim 1, characterized in that: The inner wall of the C-shaped plate (203) is provided with a clamping groove (205), the inner wall of the clamping groove (205) is slidably connected to the outer wall of the clamping strip (204), and the clamping strip (204) and the clamping groove (205) are respectively located at the center of the U-shaped embedded bolt (1) and the C-shaped plate (203).

4. The tower crane anchor bolt leveling device according to claim 1, characterized in that: A through slot (208) is formed through the top of the adjustment plate (206), the inner diameter of the through slot (208) being larger than the outer diameter of the threaded end of the first screw (207), and the first screw (207) is plugged into the adjustment plate (206) through the through slot (208).

5. The construction method of the tower crane anchor bolt leveling device according to claim 1, characterized in that: Two adjacent gaskets (209) are each provided with radial teeth (211) on the opposite sides thereof.

6. The construction method of the tower crane anchor bolt leveling device is characterized in that: The following steps are involved: The two first screws (207) on the bottom plate (201) are rotated to level the C-shaped plate (203) through the two adjustment plates (206) and in conjunction with a leveler, and the C-shaped plate (203) is leveled with the U-shaped embedded bolts (1) through the clamping strip (204) and the clamping slot (205); Tightening the first screw (207) causes the radial ratchet teeth (210) on the opposite sides of two adjacent washers (209) to form tension, thereby generating a wedge effect on the bolt head of the first screw (207).

7. The construction method of the tower crane anchor bolt leveling device according to claim 6, characterized in that: Before leveling, the U-shaped end of the U-shaped embedded bolt (1) is placed in the groove (202) on the bottom plate (201).

8. The construction method of the tower crane anchor bolt leveling device according to claim 6, characterized in that: There is a gap between the adjustment plate (206) and the bottom plate (201).

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