Pad iron base slurry construction method after equipment is in place

Abstract

The invention belongs to the technical field of equipment installation foundation construction, and particularly relates to a sizing block base slurry construction method after equipment is in place. A foundation bolt is arranged in the foundation hole, the upper end of the foundation bolt penetrates through a bolt hole of the equipment bottom plate, and after the height of the foundation bolt is adjusted, the foundation bolt and the equipment bottom plate are fixed through a nut; the sizing block group comprises flat sizing blocks, upper tapered iron and lower tapered iron, the lower surface of the lower tapered iron is horizontal, the upper surface of the upper tapered iron is horizontal, and the contact surface of the upper tapered iron and the lower tapered iron is an inclined surface; the upper tapered iron and the lower tapered iron are combined and arranged on the upper side of the flat sizing block, and a fixing device is arranged on the equipment bottom plate to fix the flat sizing block, the lower tapered iron and the upper tapered iron with the equipment bottom plate; and the lower surface of the flat sizing block is filled with bed mortar concrete from a foundation hole. According to the method, the two working procedures of foundation bolt hole grouting and sizing block base grouting are completed at a time, and the construction efficiency is remarkably improved; the foundation bolt and the sizing block are grouted at a time, the construction space is large, a dense grouted pier can be formed, and the construction quality is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment installation foundation construction, and particularly relates to a construction method for grouting under the sole plate after equipment placement. Background Art

[0002] In industrial equipment installation construction, it is common to pre-construct equipment foundations. Equipment foundations are usually concrete foundations. When the equipment is installed and fixed to the concrete foundation, anchor bolts should be reserved on the concrete foundation. The positions of the anchor bolts should be strictly positioned according to the bolt holes on the equipment bottom plate. However, when the anchor bolts are embedded in one go during the pouring of the concrete foundation, displacement is likely to occur and they cannot match the equipment. Therefore, in the prior art, holes for secondary pouring of anchor bolts are usually reserved during the pouring of the concrete foundation. To ensure the installation accuracy (levelness and position accuracy) of the equipment, sole plates should be constructed on the concrete foundation. After the equipment is placed, fine adjustment of the equipment is carried out through the sole plates, and grouting under the sole plates is carried out at the position close to the anchor bolts before the equipment is placed.

[0003] The construction method of the prior art is as follows: Adopt temporary sole plates or other support measures. First, place the equipment in position and roughly adjust the center line position, and then carry out primary grouting of the anchor bolt holes. After the concrete in the anchor bolt holes solidifies, grouting under the sole plates is carried out in the narrow space between the equipment bottom plate and the foundation.

[0004] Defects of the existing construction method: 1) Because there is no operating space for sufficient ramming of the grout, the fine aggregate concrete slurry cannot form a dense grouting pier. Only concrete with low water content and high hardness can be used for piling up the grout to form a pier. The construction efficiency is low, and the quality of the grouting pier is difficult to control; 2) For some equipment bottom plates with special installation requirements of inclined angles, it is difficult to construct the inclined surface positioning of each sole plate during grouting. Currently, there is no solution for adjusting the inclination of the equipment after grouting. Summary of the Invention

[0005] The purpose of the invention aims at the deficiencies in the technology of grouting under the sole plate after the existing equipment is placed. In view of the structural characteristics of the on-site equipment and foundation, a simple and efficient construction plan for grouting under the sole plate is provided.

[0006] The technical solution adopted by the invention to solve the above problems is as follows: A construction method for grouting under the sole plate after equipment placement, The first step: Lift the equipment onto the concrete foundation, and then fix the equipment through a temporary support structure; The second step: Use the temporary support structure to adjust the position and levelness of the equipment bottom plate; The third step: Install the anchor bolts in the reserved holes of the concrete foundation; The third step: Arrange the sole plate group under the equipment bottom plate and fix it; Step 4: Pour concrete. Step 5: When the concrete strength meets the standard, remove the temporary support structure of the equipment and the fixing structure of the grouting pad group. The second step and the third step are carried out synchronously. Specifically: Place the anchor bolts in the foundation holes, with the upper ends passing through the bolt holes of the equipment base plate. After adjusting the height of the anchor bolts, use nuts to fix the anchor bolts to the equipment base plate. The grouting pad group includes a flat grouting pad, a lower inclined iron, and an upper inclined iron. The lower surface of the lower inclined iron is horizontal, the upper surface of the upper inclined iron is horizontal, and the contact surface between the upper inclined iron and the lower inclined iron is an inclined surface. The upper inclined iron and the lower inclined iron are combined and arranged on the upper side of the flat grouting pad. A fixing device is installed on the equipment base plate to fix the flat grouting pad, the lower inclined iron, and the upper inclined iron to the equipment base plate. In the fourth step, the grouting concrete is filled from the foundation hole to the lower surface of the flat grouting pad.

[0007] The present invention with the above structure, compared with the prior art, has the following beneficial effects: 1) This method completes the two major processes of anchor bolt hole grouting and grouting pad grouting at one time, significantly improving the construction efficiency; 2) Since the anchor bolt concrete and the grouting pad concrete are grouted at one time, there is a large construction space, and an integrated and dense grouting pier can be formed by tamping the grout, thus ensuring the construction quality.

[0008] Further, it also includes the process of fine adjustment and alignment of the equipment after unloading the equipment onto the grouting pad group: By moving the relative positions of the lower inclined iron and the upper inclined iron, adjust the elevation of this point of the equipment base plate. Fine-tune the center line within the gap between the reserved hole and the anchor bolt. Adjust the overall levelness of the equipment base plate by adjusting the elevations of different groups of grouting pads.

[0009] Optionally, the fixing device includes a channel-shaped frame. The top plate of the channel-shaped frame is arranged on the upper side of the equipment base plate, and the side plates of the channel-shaped frame are arranged on both sides of the equipment base plate. A first jackscrew is arranged on the top plate, and a second jackscrew is arranged on the side plate. The side wall of the flat grouting pad is fixedly connected with an L-shaped angle bracket. The vertical part of the L-shaped angle bracket is connected to the second jackscrew, and the first jackscrew cooperates with the horizontal part of the L-shaped angle bracket to clamp and fix the equipment base plate, the flat grouting pad, the lower inclined iron, and the upper inclined iron.

[0010] Optionally, the fixing device includes a cross bar and a steel wire rope. Installation holes are vertically arranged at both ends of the cross bar. The lower end of the steel wire rope is tied to the lower surface of the flat grouting pad, and both ends pass through the installation holes. Axially arranged stud holes are provided on the side surfaces at both ends of the cross bar. The stud holes communicate with the installation holes, and a second jackscrew is installed in the stud holes. The second jackscrew tightly abuts against the steel wire rope in the installation hole. A first jackscrew is arranged in the middle of the cross bar, and the lower end of the first jackscrew abuts against the upper surface of the equipment base plate.

[0011] The above-mentioned device has a simple structure, easy access to materials, simple production, low cost, improves the efficiency of anchor grouting and soleplate grouting after the equipment is in place, significantly shortens the operation time, and reduces the construction technical difficulty. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the installation structure of the first embodiment of the present invention; Figure 2 Exploded view of the structure of the first embodiment of the present invention; Figure 3 It is a schematic diagram of the installation structure of the second embodiment of the present invention; Figure 4 It is a side view of the second embodiment of the present invention; Figure 5 It is a schematic diagram of the installation fixing device at both ends of the equipment bottom plate of the present invention; Figure 6 It is a schematic diagram of the installation of the fixing device when the equipment bottom plate of the present invention is designed to be inclined.

[0013] Description of the reference numerals: 1. First jackscrew; 2. Top plate; 3. Side plate; 4. Second jackscrew; 5. L-shaped angle bracket; 6. Soleplate group; 61. Lower inclined iron; 62. Upper inclined iron; 7. Flat soleplate; 8. Equipment bottom plate; 9. Anchor bolt; 10. Concrete foundation; 11. Reserved hole; 12. Connecting brace; 13. Cross bar; 14. Steel wire rope. Detailed Description of the Invention

[0014] The present invention will be further described below in conjunction with embodiments, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0015] See Figures 1 to 4 , the present invention is applicable to the equipment installation construction of equipment with a relatively narrow equipment bottom plate, and the length and width of the configured soleplates are relatively small, significantly smaller than the bolt holes reserved on the equipment foundation.

[0016] A construction method for soleplate grouting after the equipment is in place, The first step is to hoist the equipment onto the concrete foundation 10, and then fix the equipment through a temporary support structure; The second step is to adjust the position and levelness of the equipment bottom plate 8 by using the temporary support structure; The third step is to install the anchor bolts 9 into the reserved holes of the concrete foundation 10; The third step is to set the soleplate group 6 under the equipment bottom plate 8 and fix it; The fourth step is to pour concrete; The fifth step is to remove the temporary support structure of the equipment and the fixing structure of the soleplate group 6 when the concrete strength reaches the standard.

[0017] In the construction of the present invention, it is designed to synchronize the second step and the third step. The specific operation is as follows: Place the anchor bolt 9 in the foundation hole, and let the upper end pass through the bolt hole of the equipment bottom plate 8. After adjusting the height of the anchor bolt 9, use nuts to fix the anchor bolt 9 to the equipment bottom plate 8.

[0018] The shim group 6 of the present invention includes a flat shim 7, an upper wedge 62 and a lower wedge 61. The lower surface of the lower wedge 61 is horizontal, the upper surface of the upper wedge 62 is horizontal, and the contact surface between the upper wedge 62 and the lower wedge 61 is an inclined surface; the upper wedge 62 and the lower wedge 61 are combined and arranged on the upper side of the flat shim 7. A fixing device is installed on the equipment bottom plate 8 to fix the flat shim 7, the lower wedge 61 and the upper wedge 62 to the equipment bottom plate 8.

[0019] At the same time, the fourth step of the present invention is to fill the grouting concrete from the foundation hole to the lower surface of the flat shim 7.

[0020] Referring to the attached drawings, shim groups 6 are respectively arranged at both ends of the equipment bottom plate 8 of the present invention. Before the shims are cast, the equipment is subjected to the first positioning adjustment. The equipment bottom plate 8 basically meets the equipment installation requirements. The shim groups 6 are grouted and cast while being fixed to the equipment bottom plate 8, and the shim groups 6 also meet the positioning requirements of the equipment. Therefore, after the concrete reaches the standard, the flat shims 7 are fixed and can ensure cooperation with the equipment; after removing the temporary support structure of the equipment, the load of the equipment completely falls on the shim groups 6, and at this time the shim groups 6 have been fixed by the concrete, so there is no need to adjust the position of the flat shims 7 anymore; the upper wedge 62 and the lower wedge 61 can perform secondary fine adjustment of the equipment after the flat shims 7 are buried.

[0021] After the equipment of the present invention is unloaded onto the shim groups 6, the process of adjusting the fixed plane of the equipment: Move the relative positions of the lower wedge 61 and the upper wedge 62 to adjust the elevation of this point of the equipment bottom plate 8. Fine-tune the center line within the gap between the reserved hole 11 and the anchor bolt 9, and adjust the overall levelness of the equipment bottom plate 8 by adjusting the elevations of different groups of shims.

[0022] Example 1 of the fixing device of the present invention: Refer to Figure 1 , the fixing device includes a channel-shaped frame. The top plate 2 of the channel-shaped frame is arranged on the upper side of the equipment bottom plate 8, and the side plates 3 of the channel-shaped frame are arranged on both sides of the equipment bottom plate 8; a first jackscrew 1 is arranged on the top plate 2, and a second jackscrew 4 is arranged on the side plate 3; an L-shaped angle bracket 5 is fixedly connected to the side wall of the flat shim 7, and the vertical part of the L-shaped angle bracket 5 is connected to the second jackscrew 4, and the first jackscrew 1 cooperates with the horizontal part of the L-shaped angle bracket 5 to clamp and fix the equipment bottom plate 8, the flat shim 7, the lower wedge 61 and the upper wedge 62.

[0023] Two trough-shaped frames are made of solid web square steel. Vertical holes are drilled in the top surface of each trough-shaped frame for installing the first set screw 1, and horizontal holes are drilled in the two side walls of the trough-shaped frame for installing the second set screw 4; fix two connecting braces 12 to the side surface of the top plate 2 of the two trough-shaped frames, and connect the two trough-shaped frames into a whole through the two connecting braces 12, so as to widen the structure, thereby making the support width of the shim larger and more stable; buckle the trough-shaped frame onto the equipment bottom plate 8, the top plate 2 of the trough-shaped frame is placed on the upper surface of the equipment bottom plate 8, and the side plate 3 hangs on the lower side of the equipment bottom plate 8.

[0024] Prepare a shim group 6, which consists of a flat shim 7, a lower inclined shim 61 and an upper inclined shim 62. Two L-shaped angle brackets 5 are welded to both sides of the flat shim 7 in the length direction, and threaded holes are drilled between the vertical parts of the L-shaped angle brackets 5.

[0025] Pass the second set screw 4 through the side plate 3 of the trough-shaped frame, and then pass the end through the vertical part of the L-shaped angle bracket 5, so that the second set screw 4 is connected to the flat shim 7.

[0026] Install the first set screw 1 into the top plate 2 of the trough-shaped frame. By rotating the first set screw 1, the trough-shaped frame is lifted. The upward movement of the trough-shaped frame drives the L-shaped angle bracket 5 to move upward. The upward movement of the L-shaped angle bracket 5 drives the lower inclined shim 61 and the upper inclined shim 62 to move upward, so that there is no gap between the top surface of the upper inclined shim 62 and the lower surface of the equipment bottom plate 8, and all contact surfaces between each shim and the equipment bottom plate 8 are tightly attached.

[0027] The anchor bolt 9 is pre-fixed to the equipment bottom plate 8: Place the lower end of the anchor bolt 9 in the reserved hole 11, and the upper end passes through the equipment bottom plate 8, and double nuts and a washer are provided on the exposed part.

[0028] The trough-shaped frame has high structural strength, is easy to manufacture, and can stably fix the shim group 6 with large volume and weight.

[0029] Embodiment 2 of the fixing device of the present invention: It is applicable to the installation of equipment with a small weight. See Figure 2 , the fixing device includes a cross bar 13 and a steel wire rope 14. Radially arranged mounting holes are provided at both ends of the cross bar 13. The lower end of the steel wire rope 14 is tied to the lower surface of the flat shim 7, and both ends are passed through the mounting holes; Axially arranged stud holes are provided on the side surfaces at both ends of the cross bar 13. The stud holes communicate with the mounting holes. A second set screw 4 is installed in the stud holes. The second set screw 4 abuts tightly against the steel wire rope 14 in the mounting holes. A first set screw 1 is provided in the middle of the cross bar 13, and the lower end of the first set screw 1 abuts against the upper surface of the equipment bottom plate 8.

[0030] Two cross bars 13 are made of solid web square steel. Vertically penetrating holes are made at both ends of the cross bar 13 for installing the steel wire rope 14, and holes are made from the end face for installing the second set screw 4 for tightening the steel wire rope 14. Connecting braces 12 are welded to the adjacent side surfaces of the two cross bars 13; The wire rope 14 should be made of a rope material with sufficient strength, and the two ends should be pre-passed through the installation holes; Then, the cross bar 13 and the wire rope 14 are combined into a set and sleeved on the equipment bottom plate 8; Prepare the shim group 6, insert it between the wire rope 14 and the equipment bottom plate 8 in sequence, and then tighten from the end of the wire rope 14 to bind the wire rope 14 to the lower surface of the flat shim 7; Set the anchor bolts 9, place the rod of the anchor bolt 9 in the hole of the anchor bolt 9, the upper part passes through the equipment bottom plate 8, and double nuts and a washer are set on the exposed part.

[0031] In this embodiment, the vertical rods at both ends directly press and fix the shims from both sides of the shims through the jackscrews; or use iron wires to hold the lower surface of the shims, bend them upward from both sides of the shims, tighten them and then press them with the jackscrews of the vertical rods at both ends. Finally, formwork is carried out around the equipment bottom plate 8, and the shims and the holes of the anchor bolts 9 are grouted at one time with grouting material.

[0032] The operations of the above two schemes are equally applicable to the case where the equipment bottom plate 8 has an installation requirement with an inclined angle, such as Figure 6 , in order to ensure the verticality of the anchor bolts 9, we need to replace their flat washers with wedge washers. The flat shims 7 in the shim group 6 and the holes of the anchor bolts 9 are grouted together once, and the grouting height is 5 mm - 10 mm higher than the lower surface of the flat shim 7. The parts of the L-shaped angle brackets 5 in the first embodiment and the wire rope 14 exposed from the grouting layer are removed by gas cutting, and the trough-shaped frames or cross bars 13 are directly removed. Next, the equipment starts to align and finely adjust by adjusting the relative positions of the lower inclined iron 61 and the lower inclined iron 61.

[0033] Compared with the prior art, the beneficial effects of the present invention are: ① The method and device have a simple structure. The most prominent advantage is that it solves the problem of insufficient compactness of the piled grout when grouting after the equipment is in place. At the same time, the shim group is suspended and temporarily fixed, and the grouting method is changed to grouting.

[0034] ② This method completes the two major processes of grouting the anchor bolt holes and grouting the shims at one time, significantly improving the construction efficiency and quality.

[0035] ③ This device is also very suitable for the situation where the equipment bottom plate has an installation requirement with an inclined angle, and solves the problem that it is difficult to control the angle and accuracy of the shim grouting.

[0036] ④ This device is easy to obtain materials, simple to manufacture, low in cost, improves the efficiency of anchor bolt grouting and shim grouting after the equipment is in place, significantly shortens the operation time, and reduces the construction technical difficulty.

[0037] The above are only the preferred and feasible embodiments of the present invention, and thus do not limit the scope of the rights of the present invention. Any equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of the rights of the present invention.

Claims

1. A method for constructing a slurry pad after the equipment is in place. In the first step, the equipment is hoisted onto the concrete foundation (10) and then fixed by a temporary support structure; The second step is to use a temporary support structure to adjust the position and levelness of the equipment bottom plate (8); Step 3: The anchor bolts (9) are installed in the reserved holes of the concrete foundation (10); The third step is to place the washer group (6) on the lower side of the equipment bottom plate (8) and fix it; Step 4: pouring concrete; Step 5: When the concrete strength reaches the standard, the temporary support structure of the equipment and the fixed structure of the pad iron group (6) are removed; It is characterized in that The second step and the third step are performed simultaneously, specifically: placing the anchor bolt (9) in the foundation hole, passing the upper end through the bolt hole of the equipment bottom plate (8), adjusting the height of the anchor bolt (9), and fixing the anchor bolt (9) to the equipment bottom plate (8) with a nut; The washer group (6) comprises a flat washer (7), an upper inclined iron (62) and an upper inclined iron (62); the lower surface of the lower inclined iron (61) is horizontal, the upper surface of the upper inclined iron (62) is horizontal, and the contact surface between the upper inclined iron (62) and the lower inclined iron (61) is an inclined surface; the upper inclined iron (62) and the lower inclined iron (61) are combined and arranged on the upper side of the flat washer (7); a fixing device is installed on the equipment bottom plate (8) to fix the flat washer (7), the lower inclined iron (61) and the upper inclined iron (62) to the equipment bottom plate (8); The fourth step is to fill the mortar concrete from the foundation opening to the lower surface of the flat washer (7).

2. The method for constructing the iron seat slurry after the equipment is in place according to claim 1 is characterized in that , and also includes a process of fine-tuning and aligning the equipment after unloading it onto the shim group (6): adjusting the elevation of the equipment base plate (8) at that point by moving the relative positions of the lower inclined iron (61) and the upper inclined iron (62), fine-tuning the center line within the gap between the reserved hole (11) and the anchor bolt (9), and adjusting the overall levelness of the equipment base plate (8) by adjusting the elevations of different groups of shims.

3. The method for constructing the iron seat slurry after the equipment is in place according to claim 1, characterized in that: The fixing device comprises a groove frame, wherein a groove frame top plate (2) is arranged on the upper side of a device bottom plate (8), and a groove frame side plate (3) is arranged on both sides of the device bottom plate (8); a first top screw (1) is arranged on the top plate (2), and a second top screw (4) is arranged on the side plate (3); an L-shaped angle bracket (5) is fixedly connected to the side wall of the flat washer (7), a vertical portion of the L-shaped angle bracket (5) is connected to the second top screw (4), and the first top screw (1) and the horizontal portion of the L-shaped angle bracket (5) cooperate to clamp the device bottom plate (8), the flat washer (7), the lower inclined iron (61), and the upper inclined iron (62).

4. The method for constructing the iron seat slurry after the equipment is in place according to claim 1, characterized in that: The fixing device comprises a cross bar (13) and a steel wire rope (14), wherein two ends of the cross bar (13) are provided with vertically arranged mounting holes, the lower end of the steel wire rope (14) is tied to the lower surface of the flat washer (7), and the two ends are inserted into the mounting holes; the side surfaces of the two ends of the cross bar (13) are provided with axially arranged bolt holes, the bolt holes are communicated with the mounting holes, a second top screw (4) is installed in the bolt hole, the second top screw (4) is tightly abutted against the steel wire rope (14) in the mounting hole, and a first top screw (1) is arranged in the middle of the cross bar (13), and the lower end of the first top screw (1) is abutted against the upper surface of the equipment bottom plate (8).

5. The method for constructing the iron seat slurry after the equipment is in place according to claim 3, characterized in that: Two ends of the grooved frame side plate (3) are respectively provided with a second top screw (4), and four L-shaped corner brackets (5) are symmetrically arranged on both sides of the flat washer (7).

6. The method for constructing the iron seat slurry after the equipment is in place according to claim 4, characterized in that: Two cross bars (13) are provided, and the two cross bars (13) are fixedly connected as one body through a connecting support (12). Two steel wire ropes (14) are provided, which are respectively connected to the cross bars (13) and are respectively located at two ends of the flat washer (7).

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