A method for lengthening and tightening device anchor bolts

Abstract

The application discloses a device foundation bolt lengthening method and a tightening device in the technical field of device installation, the tightening device comprises a handle and a mounting ring mounted on the end of the handle, the tightening device further comprises a sleeve ring rotatably mounted in the mounting ring, a plurality of groups of slotted holes are formed in the outer side wall of the sleeve ring, an insertion block for being inserted into the slotted holes is slidably arranged on the mounting ring, a pressing block is slidably arranged on the handle, and a connecting rope is arranged between the pressing block and the insertion block, in the application, a screw rod with a nut is processed, internal threads are processed on the screw rod, the screw rod with the nut is directly connected with a pre-buried bolt, the length of the pre-buried bolt is increased, normal installation and fixation of the device are ensured, the difficulty of construction is reduced, the construction period is shortened, the work efficiency is improved, the construction progress of the project is ensured, and the engineering cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of equipment installation technology, specifically to a method for extending equipment anchor bolts and a tightening device. Background Technology

[0002] In the installation of petrochemical equipment, a large number of equipment installations require anchor bolts to fix the equipment. For example, tower equipment mostly uses anchor bolts pre-embedded in the concrete foundation. These anchor bolts are pre-embedded in the steel reinforcement of the equipment foundation before the foundation concrete is poured, forming an integral whole with the steel reinforcement in the equipment foundation. This allows them to withstand greater loads and ensure the stability of the equipment during operation.

[0003] Tower equipment installation requires high precision for anchor bolts. The disadvantage of pre-embedded anchor bolts is that errors in the pre-embedding depth are prone to occur during civil foundation construction, or improper protection of the anchor bolts during concrete pouring. These factors can cause the bolts to shift downwards, resulting in insufficient length of the exposed bolts on the foundation, ultimately preventing the equipment from being installed. Summary of the Invention

[0004] The purpose of this invention is to provide a method and tightening device for extending equipment anchor bolts, in order to solve the problem mentioned in the background art that the bolts may shift downwards due to various reasons such as incorrect pre-embedded depth or improper protection of anchor bolts during concrete pouring, resulting in insufficient length of the exposed bolts in the foundation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tightening device for extending equipment anchor bolts, comprising: a handle and a mounting ring installed on the end of the handle, wherein the tightening device further comprises: a collar rotatably installed inside the mounting ring;

[0006] The outer wall of the collar is provided with several sets of slots, and the mounting ring is provided with insert blocks for insertion into the slots;

[0007] A pressure block is slidably provided on the handle, and a connecting rope is provided between the pressure block and the insertion block.

[0008] Preferably, the inner wall of the collar is provided with an elastic block, the elastic block has a groove, the groove has an air bladder, and the air bladder is connected to the groove through a connecting pipe.

[0009] Preferably, the handle is provided with a telescopic support member, and the movable end of the telescopic support member is provided with a ball.

[0010] Preferably, the handle is provided with a support member for supporting the handle, and the support member is provided with a telescopic support rod for supporting the support member.

[0011] Preferably, the mounting ring includes a lower ring body and an upper ring body that is snapped onto the lower ring body; the lower ring body has an annular groove, and the collar is fitted with an annular block located in the annular groove.

[0012] Preferably, the handle includes a connecting rod and a movable block; the connecting rod has a mounting groove on the side away from the mounting ring, and the movable block is slidably inserted into the mounting groove.

[0013] Preferably, the pressure block is located on the connecting rod, and a telescopic pressure plate for pressing the pressure block is slidably provided on the movable block.

[0014] As a preferred embodiment, a method for extending equipment anchor bolts utilizes an anchor bolt tightening device, specifically including the following steps:

[0015] S1: Used after the equipment is in place; directly connect the machined nut to the existing pre-embedded bolt.

[0016] S2: Then, after putting the collar on the outside of the machined nut, hold the handle and press the pressure block so that the connecting rope pulls the insert into the slotted cavity. Then turn the handle to make the mounting ring rotate with the collar and the machined nut.

[0017] S3: After turning the handle until it can no longer be turned, release the pressure block, allowing the insert block to move out of the slot. Then, turn the handle back to the initial position, press the pressure block again, and turn the handle to tighten the machining nut, connecting the machining nut to the original pre-embedded bolt, thus fixing the installation equipment.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: In this application, by processing a screw rod with a nut and machining an internal thread on the screw rod, the screw rod with the nut is directly connected to the pre-embedded bolt, which increases the length of the pre-embedded bolt, ensures the normal installation and fixation of the equipment, reduces the difficulty of construction, shortens the construction period, improves work efficiency, ensures the construction progress of the project, and reduces the project cost. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is an enlarged schematic diagram of the structure at point A in this invention;

[0021] Figure 3 This is a schematic diagram of the connection structure between the connecting rod and the mounting ring of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the annular block and the annular groove of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the machined nut and the pre-embedded bolt of the present invention.

[0024] In the diagram: 1. Handle; 101. Connecting rod; 102. Movable block; 2. Mounting ring; 21. Lower ring body; 211. Annular groove; 22. Upper ring body; 3. Collar; 31. Elastic block; 311. Annular block; 312. Slot; 4. Support component; 5. Telescopic support rod; 6. Telescopic pressure plate; 7. Pressure block; 8. Telescopic support component; 9. Ball bearing; 10. Machining nut; 11. Embedded bolt; 12. Concrete foundation. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1:

[0027] Please see Figure 1 , Figure 2 and Figure 4An extended tightening device for equipment anchor bolts includes: a handle 1, an installation ring 2 mounted on the end of the handle 1, and a collar 3 rotatably mounted inside the installation ring 2; the shape inside the collar 3 is the same as the shape of the nut (e.g., hexagonal, quadrilateral, etc.), and several sets of slots 312 are formed on the outer wall of the collar 3; an insert block is slidably mounted on the installation ring 2, and a spring is installed between the insert block and the installation ring 2; an installation groove is formed on the outside of the handle 1, and a pressure block 7 is slidably mounted inside the installation groove; a return spring is installed between the pressure block 7 and the installation groove; and a connecting rope is installed between the pressure block 7 and the insert block; pressing the pressure block 7 causes the connecting rope to pull the insert block to move, inserting the insert block into the slot 312 (the number of insert blocks is one; pressing the pressure block 7 will cause the connecting rope to pull the insert block to move), thus fixing the installation ring 2 and the collar 3 together; rotating the handle 1 causes the installation ring 2 to rotate, which in turn rotates the collar 3 to tighten the nut; when the collar 3 does not need to be rotated, it is released. Pressing block 7 removes the insert from slot 312, disconnecting the fixed connection between mounting ring 2 and collar 3. This prevents collar 3 from rotating with the mounting ring 2 when handle 1 is turned (in the process of tightening nuts using wrenches, the wrench cannot rotate a full turn due to obstruction from the installation equipment. When the wrench stops rotating, it needs to be removed from the nut, its position adjusted, and then put back on before continuing to tighten. This process is cumbersome). Pressing block 7 resets handle 1. Then, pressing block 7 connects collar 3 to mounting ring 2, causing collar 3 to rotate with mounting ring 2. This eliminates the need to remove collar 3 from the nut during tightening, simplifying the tightening process.

[0028] In this embodiment, as a preferred solution, please refer to... Figure 1 and Figure 4 The inner wall of the collar 3 is provided with a rubber elastic block 31. The elastic block 31 has a groove, and the groove 312 has an air bladder. The air bladder is connected to the groove through a connecting pipe. When the pressing block 7 is pressed and the insert is inserted into the groove 312, the insert will squeeze the air bladder, which will squeeze the air inside the air bladder into the groove, causing the elastic block 31 to inflate and expand. This is used to fix the nut inside the collar 3, so that when the handle 1 is moved, the nut can be moved together, making it easy to align the nut with the pre-embedded screw.

[0029] In this embodiment, as a preferred solution, please refer to... Figure 1 , Figure 3 and Figure 4The mounting ring 2 includes a lower ring body 21 and an upper ring body 22, which are snapped together. The lower ring body 21 has an annular groove 211, and the collar 3 is fitted with an annular block 311, which is located in the annular groove 211 and can rotate within the annular groove 211. The mounting ring 2 is disassembled into the upper ring body 22 and the lower ring body 21, and the annular block 311 is removed from the annular groove 211, so that the collar 3 can be removed from the mounting ring 2 for replacement. This allows different collars 3 to be replaced according to the tightening requirements of the nut.

[0030] In this embodiment, as a preferred solution, please refer to... Figure 1 and Figure 3 The handle 1 includes a connecting rod 101 and a movable block 102. A mounting groove is provided on the side of the connecting rod 101 away from the mounting ring 2. The movable block 102 is slidably inserted into the mounting groove. A fixing bolt is screwed onto the connecting rod 101. The tightening end of the fixing bolt extends into the mounting groove and fits against the outer wall of the movable block 102 to fix the movable block 102. Loosening the fixing bolt and moving the movable block 102 increases the overall length of the handle 1, making it more convenient and less strenuous to tighten the nut.

[0031] In this embodiment, as a preferred solution, please refer to... Figure 1 and Figure 2 The pressure block 7 is located on the connecting rod 101, and a telescopic pressure plate 6 is slidably provided on the movable block 102 (the telescopic pressure plate 6 is composed of two parts, one set of plates is slidably installed on the other set of plates, and the length of the telescopic pressure plate 6 is adjusted by sliding the plates). The telescopic pressure plate 6 is used to press the pressure block 7; when the length of the handle 1 is increased by extending the telescopic pressure plate 6, the telescopic pressure plate 6 can also press the pressure block 7.

[0032] Example 2:

[0033] For a preferred option, please refer to Figure 1 and Figure 3 The handle 1 is equipped with a telescopic support 8 (the telescopic support 8 includes a telescopic main rod and a telescopic secondary rod that slides inside the telescopic main rod. The telescopic secondary rod slides inside the telescopic main rod to adjust the length of the telescopic support 8. Bolts are screwed onto the outer wall of the telescopic main rod to fix the telescopic secondary rod). The moving end of the telescopic support 8 is equipped with a ball bearing 9. During the rotation of the handle 1, the ball bearing 9 contacts the installation area and supports the handle 1, the installation ring 2 and the collar 3, making it easier to tighten the nut.

[0034] In this embodiment, as a preferred solution, please refer to... Figure 1Below the handle 1 is a support member 4, and below the support member 4 is a telescopic support rod 5 (the telescopic support rod 5 has the same structure as the telescopic support member 8); it also supports the handle 1, the mounting ring 2 and the collar 3, so that the handle 1 does not need to be raised all the time during the tightening of the nut; and the support member 4 is in close contact with the handle 1.

[0035] A method for extending equipment anchor bolts, utilizing a tightening device for extending equipment anchor bolts, specifically includes the following steps:

[0036] like Figure 5 As shown, S1: using The round steel bar is machined into a nut shape at one end. The round steel bar is made of Q235B, the same material as the pre-embedded bolt 11. An internal thread with a depth of 90mm is machined at the other end of the round steel bar, with an inner diameter of [missing information]. The threads of the thread must match the threads of the anchor bolt's external thread, and the outer diameter of the screw is... The manufactured screw with a nut is machined nut 10.

[0037] S2: After the equipment is in place, the machined screw with nut (machined nut 10) is directly connected to the original pre-embedded bolt 11.

[0038] S2: Then, after the collar 3 is put on the outside of the machining nut 10, the worker holds the handle 1 and presses the pressure block 7, so that the connecting rope pulls the insert block into the inner cavity of the slot 312. Then, the handle 1 is turned so that the mounting ring 2 rotates with the collar 3 and the machining nut 10.

[0039] S3: After a certain distance, release the pressure block 7, so that the insert block moves out of the slot 312. Then, rotate the handle 1 in the opposite direction to the initial position, and then press the pressure block 7 again to insert the insert block into the slot 312. Then, rotate the handle 1 in the opposite direction to make the mounting ring 2 rotate with the collar 3 and the machining nut 10. Repeat the operation to tighten the machining nut 10, so that the machining nut 10 is connected to the original pre-embedded bolt 11 and the installation equipment is fixed.

[0040] Among them, the stress calculation of the pre-embedded bolt 11.

[0041] Flexural section modulus of the foundation ring plate:

[0042] Zb=π*(D4ob-D4ib) / 32Dob=5.9156×108mm3.

[0043] Where: Dob—outer diameter of the foundation ring plate, the drawing data is 2132mm;

[0044] Dib—Inner diameter of the base ring plate, the drawing data is 1672mm.

[0045] Area of ​​the foundation ring plate:

[0046] Ab=π*(D2ob-D2ib) / 4=1.374×106mm2.

[0047] The maximum virtual tensile stress between the foundation ring slab and the foundation surface under seismic load:

[0048] (M0-0E+0.25M0-0W+Me) / Zb-(m0g-F0-0v) / Ab=-0.0474.

[0049] Where: M0-0E—seismic bending moment, according to the design calculation, M0-0E=4.534×107.

[0050] Me—eccentric bending moment; according to the design calculation, Me = 0.

[0051] M0-0W—Wind bending moment, according to the design calculation, M0-0W = 3.183 × 10⁷.

[0052] F0-0v—Vertical seismic force, F0-0v=0.

[0053] m0 = 18974.8 kg.

[0054] The maximum virtual tensile stress between the foundation ring plate and the foundation surface under wind load:

[0055] (M0-0w+Me) / Zb-(mming) / Ab=-0.0371.

[0056] Where: mmin = 12520Kg.

[0057] Based on the above calculations, the maximum tensile stress that the pre-embedded bolt 11 needs to withstand is negative, indicating that the installed equipment can be stabilized on its own. The pre-embedded bolt 11 only serves to fix the equipment. Therefore, the extended nut with screw rod made only needs to fix the equipment.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tightening device for extending the anchor bolts of equipment, comprising: The handle (1) and the mounting ring (2) installed on the end of the handle (1) are characterized in that: the tightening device further includes: a collar (3) installed in the mounting ring (2); The outer wall of the collar (3) is provided with a number of slots (312), and the mounting ring (2) is provided with a plug for inserting into the slot (312); A pressure block (7) is slidably provided on the handle (1), and a connecting rope is provided between the pressure block (7) and the insertion block; The inner wall of the collar (3) is provided with an elastic block (31), the elastic block (31) is provided with a groove, the groove (312) is provided with an airbag, and the airbag is connected to the groove through a connecting pipe.

2. The tightening device for extending equipment anchor bolts according to claim 1, characterized in that: The handle (1) is provided with a telescopic support (8), and the movable end of the telescopic support (8) is provided with a ball (9).

3. The tightening device for extending equipment anchor bolts according to claim 2, characterized in that: The handle (1) is provided with a support member (4) for supporting the handle (1), and the support member (4) is provided with a telescopic support rod (5) for supporting the support member (4).

4. The tightening device for extending equipment anchor bolts according to claim 1, characterized in that: The mounting ring (2) includes a lower ring body (21) and an upper ring body (22) that is snapped onto the lower ring body (21); an annular groove (211) is provided on the lower ring body (21), and an annular block (311) is fitted on the collar (3) within the annular groove (211).

5. The tightening device for extending equipment anchor bolts according to claim 1, characterized in that: The handle (1) includes a connecting rod (101) and a movable block (102); the connecting rod (101) has a mounting groove on the side away from the mounting ring (2), and the movable block (102) is slidably inserted into the mounting groove.

6. The tightening device for extending equipment anchor bolts according to claim 5, characterized in that: The pressure block (7) is located on the connecting rod (101), and the movable block (102) is slidably provided with a telescopic pressure plate (6) for pressing the pressure block (7).

7. A method for extending equipment anchor bolts, utilizing the tightening device for extending equipment anchor bolts as described in any one of claims 1-6, characterized in that: Specifically, the following steps are included: S1: After the equipment is in place, the machined nut (10) is directly connected to the original pre-embedded bolt (11); S2: Then, after putting the collar (3) on the outside of the machining nut (10), hold the handle (1) and press the pressure block (7) so that the connecting rope pulls the insert into the inner cavity of the slot (312). Then turn the handle (1) so that the mounting ring (2) rotates with the collar (3) and the machining nut (10). S3: After the handle (1) is rotated to the point where it cannot be rotated, release the pressure block (7) so that the insert block is removed from the slot (312). Then rotate the handle (1) to the initial position, press the pressure block (7) again, and rotate the handle (1) to tighten the machining nut (10) so that the machining nut (10) is connected to the original pre-embedded bolt (11) to fix the installation equipment.

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