Group bolt installation device and method

Abstract

The invention relates to the technical field of equipment installation, in particular to a group bolt installation device and method.The device comprises a rigid main frame fixed to a concrete cushion layer through adjustable supporting legs and a positioning disc connected with the main frame through an adjustable connecting handle. Bolt positioning holes arranged according to equipment bolt point positions are formed in the positioning disc, and the hole diameter of each bolt positioning hole is larger than the rod diameter of a foundation bolt, so that the single foundation bolt has a three-dimensional fine adjustment function. The overall elevation, the levelness and the plane position of the positioning disc and the foundation bolt set can be accurately controlled by adjusting the supporting legs and the connecting handles respectively. The foundation bolt sets are connected into a whole through the rigid frame, overall calibration is conducted through equipment such as a total station, impact is resisted through the rigidity of the frame in the concrete pouring process, the final forming precision of the foundation bolt sets is effectively guaranteed, and the problems that fixing is not firm and precision is difficult to control in a traditional method are solved.

Description

Technical Field

[0001] This invention relates to the field of equipment installation technology, specifically to a group bolt installation device and method. Background Technology

[0002] In industrial building construction, the installation of large equipment often employs pre-embedded anchor bolts in the foundation. With the increasing scale of equipment, the requirements for the pre-embedding accuracy of anchor bolts, especially groups of anchor bolts, are becoming increasingly stringent. The quality of their installation directly affects the final installation quality and long-term operational stability of the equipment. Taking the foundation construction of dust removal facilities as an example, with increasingly stringent environmental standards, modern industry places extremely high demands on the processing efficiency and structural reliability of dust removal facilities. The dust removal chimney is connected to the anchor bolt group in the foundation via a bottom foot plate, reliably transferring the enormous wind load and self-weight borne by the superstructure to the foundation. Therefore, the pre-embedding accuracy of the anchor bolt group is the primary prerequisite for ensuring the safe installation and long-term stable operation of dust removal facilities.

[0003] Currently, in this type of construction, the positioning and control of anchor bolts generally adopts traditional methods. Specifically, after measuring and laying out the lines on site according to the design drawings, initial fixing is carried out using a combination of steel bar supports and simple fixing frames. Construction workers need to rely on their personal experience and use simple tools such as steel rulers and ropes to correct the position of the anchor bolt group. This method has significant drawbacks: the fixing is very unstable, and the relative position and spacing of the anchor bolt group are difficult to guarantee; during the concrete pouring process, the anchor bolts are extremely susceptible to displacement and deformation due to the huge impact force generated by the falling concrete, resulting in poor final forming accuracy, which cannot meet the installation requirements of high-precision equipment and poses hidden dangers for subsequent equipment installation and long-term safe operation.

[0004] Therefore, there is an urgent need for a group bolt installation technology and device that can achieve precise positioning and secure fixing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a group bolt installation device and method that can achieve precise positioning and secure fixing.

[0006] The technical solution adopted by this invention to solve its technical problem is: A group bolt installation device includes a main frame with multiple adjustable legs at the bottom. Each adjustable leg has a pad at its lower end, which is fixed to a concrete foundation by expansion bolts. A positioning plate is provided in the main frame, and the positioning plate has multiple bolt positioning holes. The positions of the bolt positioning holes are set according to the preset anchor bolt installation points. The positioning plate and the main frame are connected by an adjustable connecting handle. By adjusting the length of the adjustable connecting handle, the position of the positioning plate can be adjusted.

[0007] As a preferred embodiment, a further technical solution of the present invention is: Preferably, the relationship between the diameter D1 of the bolt positioning hole and the diameter D2 of the anchor bolt to be installed is D2+2mm≤D1≤D2+10mm. The anchor bolt passes through the washer and the bolt positioning hole in sequence, and the washer is pressed by tightening the lock nut on the top of the anchor bolt, thereby locking the finely adjusted anchor bolt.

[0008] Preferably, the adjustable outrigger includes two first threaded rods respectively connected to the main frame and the pad. The two first threaded rods are threaded at opposite ends into the same first threaded sleeve. By rotating the first threaded sleeve, the length of the two first threaded rods extending into the first threaded sleeve can be adjusted synchronously, thereby changing the total height of the adjustable outrigger to adjust the level and elevation of the main frame.

[0009] Preferably, the adjustable connecting handle includes two second threaded rods respectively connected to the main frame and the positioning plate. The two second threaded rods are threaded to the same second threaded sleeve at opposite ends. By rotating the second threaded sleeve, the length of the two second threaded rods extending into the second threaded sleeve can be adjusted synchronously, thereby changing the effective length of the adjustable connecting handle to adjust the position of the positioning plate in the plane.

[0010] Preferably, the second threaded rod is detachably connected to the main frame and the positioning plate.

[0011] Preferably, the positioning plate is also provided with a measurement reference point for precision measurement.

[0012] The present invention also discloses a method for installing annular group bolts in an annular group bolt installation device, comprising the following steps: S1: Perform measurement, positioning, and layout on the concrete cushion layer, and fix the ring-shaped group bolt installation device; S2: Insert the upper end of the anchor bolt assembly through and initially fix it in the bolt positioning hole of the positioning plate; S3: By adjusting the adjustable outriggers, the level and elevation of the main frame and positioning plate can be precisely adjusted; S4: Fine-tune the planar position of the positioning plate and anchor bolt assembly by adjusting the adjustable connecting handle; S5: Independently fine-tune and lock the planar position, top elevation, and verticality of a single anchor bolt; S6: Using a total station or GPS, the ring-shaped bolt installation device and anchor bolt group are precisely calibrated as a whole through the measurement reference points on the positioning plate. After calibration, concrete is poured.

[0013] Preferably, fixing the annular group bolt installation device in step S1 specifically includes: anchoring the pad at the bottom of the adjustable leg to the concrete pad layer using expansion bolts.

[0014] Preferably, in step S5, the single anchor bolt is fine-tuned. Specifically, the planar position and verticality are adjusted by the movable gap formed by the diameter D1 of the bolt positioning hole being greater than the diameter D2 of the anchor bolt rod, and the locking is achieved by tightening the locking nut and pressing the washer.

[0015] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art: This invention connects the anchor bolt assembly into a stable whole through a rigid main frame and incorporates a multi-level precision adjustment system (adjustable legs, adjustable connecting handles, and individual bolt micro-adjustment holes). This allows for independent and precise micro-adjustment and locking of the entire bolt assembly and individual bolts in three-dimensional space (planar position, elevation, and verticality), fundamentally ensuring the final forming accuracy of the anchor bolt assembly. Simultaneously, the device is highly modular; after installation and fixation, it can be calibrated using measuring reference points and equipment such as a total station, simplifying the process, reducing over-reliance on the experience of construction personnel, and improving construction efficiency and quality control. Utilizing the device's rigid structure, it effectively resists impacts and disturbances during concrete pouring, avoiding displacement and deformation that are prone to occur with traditional simple fixing methods, thus ensuring construction quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the group bolt mounting device in an embodiment of the present invention; Figure 2 The diagram shows the structure of the group bolt installation device in this embodiment of the invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. Adjustable support leg; 201. First threaded rod; 202. First threaded sleeve; 3. Pad plate; 4. Concrete pad; 5. Positioning plate; 6. Adjustable connecting handle; 601. Second threaded rod; 602. Second threaded sleeve; 7. Anchor bolt; 8. Casting formwork. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0019] like Figure 1 , Figure 2As shown in the figure, this embodiment provides a group bolt installation device, including a main frame 1, which is a rigid frame structure welded from structural steel (such as channel steel and angle steel); multiple adjustable legs 2 are provided at the bottom of the main frame 1, and a pad 3 is provided at the lower end of the adjustable legs 2. The pad 3 is fixed to the concrete pad 4 by expansion bolts; a positioning plate 5 is provided in the main frame 1, and the positioning plate 5 has multiple bolt positioning holes; the positioning plate 5 and the main frame 1 are connected by an adjustable connecting handle 6. By adjusting the length of the adjustable connecting handle 6, the position of the positioning plate 5 can be adjusted. The relationship between the diameter D1 of the bolt positioning hole and the diameter D2 of the anchor bolt 7 to be installed is D2+2mm≤D1≤D2+10mm. The anchor bolt 7 passes through the washer and the bolt positioning hole in sequence, and the washer is pressed by tightening the lock nut on the top of the anchor bolt 7, thereby locking the finely adjusted anchor bolt 7. The position of the bolt positioning hole is set according to the preset installation point of the anchor bolt 7. For example, when the equipment to be installed is a dust removal chimney, the positioning plate 5 is designed to be a circular ring that matches the shape of the bottom ring foot plate of the dust removal chimney, and the bolt positioning holes on it are evenly distributed in a circle according to the bolt hole positions on the foot plate.

[0020] The adjustable outrigger 2 includes two first threaded rods 201 connected to the main frame 1 and the pad 3 respectively. The two first threaded rods 201 are threaded at opposite ends into the same first threaded sleeve 202. By rotating the first threaded sleeve 202, the length of the two first threaded rods 201 extending into the first threaded sleeve 202 can be adjusted synchronously, thereby changing the total height of the adjustable outrigger 2 to adjust the level and elevation of the main frame 1.

[0021] The adjustable connecting handle 6 includes two second threaded rods 601 respectively connected to the main frame 1 and the positioning disk 5. The two second threaded rods 601 are threaded to the same second threaded sleeve 602 at opposite ends. By rotating the second threaded sleeve 602, the length of the two second threaded rods 601 extending into the second threaded sleeve 602 can be adjusted synchronously, thereby changing the effective length of the adjustable connecting handle 6 to adjust the position of the positioning disk 5 in the plane.

[0022] The outer surfaces of the first threaded sleeve 202 and the second threaded sleeve 602 may be provided with anti-slip textures or welded wrench handles to facilitate manual rotation and adjustment.

[0023] The second threaded rod 601 can be fixed to the main frame 1 and the positioning plate 5 by welding, or it can be a detachable connection structure. The detachable connection structure can be: Option 1, the main frame 1 and the positioning plate 5 are provided with threaded holes, the end of the second threaded rod 601 is provided with external threads, and the connection is achieved by screwing into the threaded holes, and it can be fixed by the matching lock nut; Option 2, the main frame 1 and the positioning plate 5 are welded with a first connecting ear plate, the end of the second threaded rod 601 is provided with a second connecting ear plate, and the first connecting ear plate and the second connecting ear plate are fixed by bolts.

[0024] The positioning plate 5 also features measurement reference points for precision measurements. These reference points typically employ one of the following structures: a precision-machined center hole or crosshair; a small hole or crosshair precisely machined into the positioning plate 5 to serve as an alignment target for measuring equipment such as a total station; a pre-embedded metal marker; a group bolt mounting device that embeds or welds a raised metal marker made of stainless steel or similar material with a precision centering point on its top onto the positioning plate 5; or a standard forced centering base, which has extremely high concentricity and can be directly and quickly connected to the centering rod of a total station or GPS receiver.

[0025] The present invention also discloses a method for installing annular group bolts in an annular group bolt installation device, comprising the following steps: S1: Measure and mark the positions on the concrete base 4, and fix the ring-shaped bolt installation device. Specifically, this includes anchoring the pad 3 at the bottom of the adjustable support leg 2 to the concrete base 4 using expansion bolts. Then, tie the foundation reinforcement and erect the casting formwork 8 around the foundation reinforcement.

[0026] S2: Insert the upper end of the anchor bolt group 7 and initially fix it in the bolt positioning hole of the positioning plate 5.

[0027] S3: By adjusting the adjustable support leg 2, the level and elevation of the main frame 1 and the positioning plate 5 can be precisely adjusted.

[0028] S4: Fine-tune the planar position of the positioning plate 5 and the anchor bolt 7 group by adjusting the adjustable connecting handle 6.

[0029] S5: Independently fine-tune and lock the planar position, top elevation, and verticality of a single anchor bolt 7. Specifically, adjust its planar position and verticality by creating a play through the hole diameter D1 of the bolt positioning hole being larger than the bolt diameter D2 of the anchor bolt 7, and lock it by tightening the locking nut and pressing the washer.

[0030] S6: Using a total station or GPS, perform overall precise calibration of the ring-shaped bolt installation device and the 7 sets of anchor bolts through the measurement reference points on the positioning plate 5. After calibration, pour concrete.

[0031] Using the device and method described in this invention, the final installation accuracy (such as axis deviation, elevation error, and verticality) of the 7 sets of anchor bolts can be controlled within ±2mm, which is much higher than the error level of ±5mm or even higher in traditional construction methods, and the construction efficiency is significantly improved.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. A group bolt mounting device, characterized in that: Includes a main frame (1), with multiple adjustable legs (2) at the bottom of the main frame (1), and pads (3) at the lower end of the adjustable legs (2), which are fixed to the concrete pad (4) by expansion bolts; The main frame (1) is provided with a positioning plate (5), and the positioning plate (5) is provided with multiple bolt positioning holes. The position of the bolt positioning holes is set according to the preset anchor bolt (7) installation point. The positioning disk (5) and the main frame (1) are connected by an adjustable connecting handle (6). The position of the positioning disk (5) can be adjusted by adjusting the length of the adjustable connecting handle (6).

2. The group bolt mounting device according to claim 1, characterized in that: The relationship between the diameter D1 of the bolt positioning hole and the diameter D2 of the anchor bolt (7) to be installed is D2+2mm≤D1≤D2+10mm. The anchor bolt (7) passes through the washer and the bolt positioning hole in sequence, and the washer is pressed by tightening the locking nut on the top of the anchor bolt (7), thereby locking the finely adjusted anchor bolt (7).

3. The group bolt mounting device according to claim 1, characterized in that: The adjustable outrigger (2) includes two first threaded rods (201) connected to the main frame (1) and the pad (3) respectively. The two first threaded rods (201) are threaded at opposite ends into the same first threaded sleeve (202). By rotating the first threaded sleeve (202), the length of the two first threaded rods (201) extending into the first threaded sleeve (202) can be adjusted synchronously, thereby changing the total height of the adjustable outrigger (2) to adjust the level and elevation of the main frame (1).

4. The group bolt mounting device according to claim 1, characterized in that: The adjustable connecting handle (6) includes two second threaded rods (601) respectively connected to the main frame (1) and the positioning plate (5). The two second threaded rods (601) are threaded to the same second threaded sleeve (602) at opposite ends. By rotating the second threaded sleeve (602), the length of the two second threaded rods (601) extending into the second threaded sleeve (602) can be adjusted synchronously, thereby changing the effective length of the adjustable connecting handle (6) to adjust the position of the positioning plate (5) in the plane.

5. The group bolt mounting device according to claim 4, characterized in that: The second threaded rod (601) is detachably connected to the main frame (1) and the positioning plate (5).

6. The group bolt mounting device according to claim 1, characterized in that: The positioning plate (5) is also equipped with a measurement reference point for precision measurement.

7. A method for installing ring-shaped group bolts using the ring-shaped group bolt installation device as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Measure and position the concrete cushion (4) and fix the ring group bolt installation device. S2: Insert the upper end of the anchor bolt (7) group into the bolt positioning hole of the positioning plate (5) and fix it in the initial position; S3: By adjusting the adjustable outriggers (2), the level and elevation of the main frame (1) and the positioning plate (5) can be precisely adjusted; S4: By adjusting the adjustable connecting handle (6), fine-tune the planar position of the positioning plate (5) and the anchor bolt (7) group; S5: Independently fine-tune and lock the planar position, top elevation and verticality of a single anchor bolt (7); S6: Using a total station or GPS, the ring group bolt installation device and the anchor bolt (7) group are precisely calibrated as a whole through the measurement reference point on the positioning plate (5). After calibration, concrete is poured.

8. The group bolt installation method according to claim 7, characterized in that, The step S1 of fixing the ring-shaped group bolt installation device specifically includes: anchoring the pad (3) at the bottom of the adjustable leg (2) to the concrete pad (4) by means of expansion bolts.

9. The group bolt installation method according to claim 7, characterized in that, In step S5, the single anchor bolt (7) is fine-tuned, specifically by adjusting the diameter D1 of the bolt positioning hole. Larger than the diameter D2 of the anchor bolt (7) The resulting gap is adjusted in terms of its planar position and perpendicularity, and then locked by tightening the locking nut and pressing the washer.

Images