Foundation bolt leveling structure and construction method thereof

Abstract

The present application relates to the technical field of mechanical equipment installation, in particular to a foundation bolt leveling structure and a construction method thereof. The foundation bolt leveling structure comprises a foundation bolt arranged in a concrete foundation, a base plate supporting assembly for supporting an equipment bottom plate and being threadedly matched with the foundation bolt, and a tensioning adjusting mechanism on the base plate supporting assembly for adjusting the pre-tightening force of the thread matching between the base plate supporting assembly and the foundation bolt. The base plate supporting assembly comprises a base plate supporting sleeve and a tensioning ring as the tensioning adjusting mechanism. The present application also discloses a construction method of the foundation bolt leveling structure. The foundation bolt leveling structure and the construction method thereof do not need to set a base iron group for leveling, so that the "no load" leveling can be realized and the related data of the base iron group does not need to be calculated, so as to ensure the safety of the leveling construction, improve the equipment leveling efficiency and save the leveling cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment installation, in particular to a foundation bolt leveling structure and a construction method thereof. BACKGROUND

[0002] When installing large equipment and general equipment, the equipment needs to be installed on an ideal plane, which is also the method currently specified in the national installation specification, so the equipment needs to be leveled.

[0003] There are various methods for leveling equipment, among which the pad iron group leveling method is the most commonly used. For example, the Chinese patent with the publication number CN207334109U discloses an "adjustment pad iron and foundation bolt combination module", which adopts the pad iron group leveling method. The module includes an upper end foundation bolt, a radial adjustment flat pad iron, an upper end adjustment inclined iron, a middle adjustment inclined iron, an internal four-way connecting piece, a lower end adjustment inclined iron, and a lower end foundation bolt. The top surface of the radial adjustment flat pad iron is in contact with the bottom surface of the equipment base, the bottom surface of the radial adjustment flat pad iron is in contact with the top surface of the upper end adjustment inclined iron, the bottom inclined surface of the upper end adjustment inclined iron is in contact with the top inclined surface of the middle adjustment inclined iron, the bottom inclined surface of the middle adjustment inclined iron is in contact with the top inclined surface of the lower end adjustment inclined iron, and the bottom of the lower end adjustment inclined iron is poured with grouting material.

[0004] The adjustment pad iron and foundation bolt combination module in the above-mentioned existing scheme is also a foundation bolt leveling structure, which includes a foundation bolt arranged in (pre-buried in) a concrete foundation, a pad iron group arranged on the concrete foundation, and a pad plate arranged on the pad iron group. The existing foundation bolt leveling structure needs to calculate the number of pad iron groups, the area of a single pad iron group, and the safety factor and load of each pad iron group before installing the equipment, and then lay the pad iron group and the pad plate so that the pad plate reaches the preset elevation. Then, the equipment base plate is placed on the pad plate, the height of the pad iron group is adjusted to level the equipment, the equipment is fixed by fasteners after leveling, the leveling of the equipment is completed, the pad iron group is fixed by spot welding between the pad iron layers, and grouting material is poured again in the gap between the equipment base plate and the concrete foundation surface.

[0005] The anchor bolt leveling structure and the construction method thereof in the prior art can meet the corresponding requirements of equipment leveling and installation, and can also achieve the purpose of equipment leveling. However, the applicant found in actual work and research that the anchor bolt leveling structure in the prior art needs to support the equipment by a group of pad irons and transmit the pressure applied by the equipment to the concrete foundation, and the presence of the group of pad irons causes the following problems of the anchor bolt leveling structure: 1) During leveling construction, the equipment needs to be placed on the pad before adjusting the height of the group of pad irons, that is, the “load leveling” mode exists the problems of low efficiency, high work intensity and long time (for equipment with large weight and volume), which leads to poor effect of equipment leveling and installation; 2) Before the equipment leveling, the number of pad irons, the area of each group of pad irons, the safety factor and load of each group of pad irons and other data need to be calculated, and the parameters of these data are complex and the calculation process is tedious, which leads to long time consumption of equipment leveling and low efficiency of equipment leveling, which also leads to poor effect of equipment leveling and installation; 3) A large number of groups of pad irons (ten kilograms of pad irons are consumed for one ton of equipment) are needed during equipment leveling, and the groups of pad irons will be buried in the concrete during secondary grouting, which leads to high cost of equipment leveling and also leads to poor effect of equipment leveling and installation.

[0006] Therefore, how to design an anchor bolt leveling structure without setting a group of pad irons so as to realize “load-free” leveling and without calculating the related data of the group of pad irons to ensure the safety of leveling construction, improve the efficiency of equipment leveling and save the cost of leveling is a problem to be solved. SUMMARY

[0007] In view of the above problems of the prior art, the technical problem to be solved by the present application is to provide an anchor bolt leveling structure without setting a group of pad irons, so as to realize “load-free” leveling and without calculating the related data of the group of pad irons to ensure the safety of leveling construction, improve the efficiency of equipment leveling, save the cost of leveling and ensure the stability of equipment leveling and installation.

[0008] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0009] An anchor bolt leveling structure, comprising an anchor bolt arranged in a concrete foundation, further comprising a pad support assembly for supporting an equipment bottom plate and being threadedly matched with the anchor bolt, and the pad support assembly is provided with a tension adjusting mechanism for adjusting the pre-tightening force of the thread cooperation between the pad support assembly and the anchor bolt.

[0010] During the leveling construction, the corresponding number of foundation bolts are set according to the mounting hole positions of the equipment bottom plate; first, the foundation bolts are embedded in the concrete foundation, then the base plate supporting assembly is installed on the foundation bolts, and the base plate supporting assembly is leveled by using the existing leveling means, then the mounting position of the base plate supporting assembly is fastened by using the tensioning adjusting mechanism, and finally the equipment bottom plate is placed on the base plate supporting assembly and locked.

[0011] In the scheme, the height position of the base plate supporting assembly on the foundation bolt can be adjusted by adjusting the thread cooperation pre-tightening force between the tensioning adjusting mechanism and the foundation bolt, and the base plate supporting assembly can be tightly fixed on the foundation bolt by adjusting the thread cooperation pre-tightening force between the tensioning adjusting mechanism and the foundation bolt, and the stress action is directly transmitted to the foundation bolt, that is, the base plate supporting assembly can transmit the pressure (force) applied by the equipment to the foundation bolt, and the pressure is transmitted to the concrete foundation by the foundation bolt. On the one hand, the equipment can be stably installed by supporting the equipment through the foundation bolt and the concrete foundation, on the other hand, the base iron group is no longer needed to support the equipment or transmit the force applied by the equipment in the scheme, so that the amount of base iron can be greatly saved, thereby the cost of equipment leveling can be saved; and the base plate supporting assembly in the scheme can be tightly installed on the foundation bolt, so that the base plate supporting assembly can be leveled directly during equipment leveling, and the equipment does not need to be placed on the base plate supporting assembly, that is, "no load" leveling can be achieved. Such leveling method has the effects of leveling construction safety and speed; at the same time, the position of the base plate supporting assembly can be adjusted by the set elevation in the scheme, without the need to calculate the number of base iron groups, the area of a single base iron group, the safety factor and load of each base iron group and other data (select the corresponding base plate supporting assembly according to the model of the foundation bolt), so that the leveling efficiency of the equipment can be improved. Therefore, the foundation bolt leveling structure in the scheme does not need to set the base iron group for leveling, so that "no load" leveling can be achieved and the related data of the base iron group does not need to be calculated, so as to ensure the safety of leveling construction, improve the equipment leveling efficiency and save the leveling cost, and ensure the stability of the leveling and installation of the equipment.

[0012] Preferably, the base plate supporting assembly comprises a base plate supporting sleeve and a tensioning ring as the tensioning adjusting mechanism; the tensioning ring is sleeved on the foundation bolt through thread cooperation, and the thread cooperation pre-tightening force between the tensioning ring and the foundation bolt can be adjusted; the base plate supporting sleeve is sleeved on the tensioning ring and is in interference fit with the outer circumferential side of the tensioning ring, and the upper end surface of the base plate supporting sleeve serves as a height-adjustable mounting and supporting working surface for placing the equipment bottom plate.

[0013] In the leveling construction process, the corresponding pad supporting assembly is installed on each anchor bolt, then the pre-tightening force of the screw thread cooperation between the tensioning adjusting mechanism and the anchor bolt is kept in a loosened state, the leveling and elevation adjustment of each pad supporting assembly is carried out, the upper end surface of the pad supporting sleeve reaches the set elevation, the pad supporting sleeve is supported by the support, and the pre-tightening force of the screw thread cooperation between the tensioning adjusting mechanism and the anchor bolt is tightened, the pad supporting assembly and the anchor bolt are tightly cooperated, the stress of the pad supporting assembly is directly transmitted to the anchor bolt, and finally the equipment bottom plate is placed on the upper end surface of the pad supporting sleeve, and the equipment bottom plate is tightly installed on the pad supporting sleeve through the fastener.

[0014] In the scheme, the equipment bottom plate transmits the pressure to the pad supporting sleeve, the pad supporting sleeve transmits the pressure to the anchor bolt through the tensioning ring, the anchor bolt transmits the pressure applied by the equipment to the concrete foundation, on one hand, the concrete foundation and the anchor bolt can support the equipment, and the stability of the equipment installation can be improved, on the other hand, the pad iron group is not needed in the scheme to support the equipment or transmit the force applied by the equipment, so that the use amount of the pad iron can be greatly saved, and the cost of equipment leveling can be saved; and in the scheme, the pad supporting assembly can be directly leveled during equipment leveling, and the equipment does not need to be placed on the pad supporting assembly, that is, the 'no load' leveling can be realized, and the leveling construction safety effect is achieved; meanwhile, in the scheme, the number of pad iron groups, the area of a single pad iron group, the safety factor and load of each pad iron group and other data (the corresponding tensioning ring and pad supporting sleeve are selected according to the model of the anchor bolt) do not need to be calculated, so that the efficiency of equipment leveling can be improved.

[0015] Preferably, the outer peripheral side wall of the tensioning ring is a cylindrical friction surface extending in parallel to the central axis of the anchor bolt; and the inner side wall of the pad supporting sleeve is a cylindrical friction surface capable of closely abutting the outer peripheral side wall of the tensioning ring.

[0016] In the leveling construction process, the pad supporting sleeve and the tensioning ring are in the tight interference fit through the cylindrical friction surfaces, so that the cooperation stability between the pad supporting sleeve and the tensioning ring can be ensured, on one hand, the equipment can be stably installed, and on the other hand, the pad iron group is not needed to support the equipment or transmit the force applied by the equipment, so that the use amount of the pad iron can be greatly saved, and the cost of equipment leveling can be saved; in addition, the pad supporting sleeve and the tensioning ring with the cylindrical friction surface structure are convenient to process, and are beneficial to saving the cost of equipment leveling.

[0017] Preferably, the upper end surface of the pad supporting sleeve is higher than or equal to the upper end surface of the tensioning ring.

[0018] In the leveling construction process, the pad supporting sleeve is used for supporting the equipment bottom plate, and the tension ring is used for transmitting the pressure applied by the pad supporting sleeve to the anchor bolt. In the scheme, the upper end surface of the pad supporting sleeve is higher than or equal to the upper end surface of the tension ring, which is beneficial to better support the equipment by the pad supporting sleeve, and is also beneficial to better transmit the force borne by the pad supporting sleeve by the tension ring, so that the stability of the equipment installation and the cost of the equipment leveling can be better improved.

[0019] Preferably, the upper end surface of the pad supporting sleeve is higher than the upper end surface of the tension ring, and the upper end of the tension ring is provided with a shock-absorbing ring sleeved on the anchor bolt, which is helpful for equipment damping and directly transmits vibration to the anchor bolt; the inner diameter of the shock-absorbing ring corresponds to the outer diameter of the anchor bolt, the outer diameter of the shock-absorbing ring corresponds to the outer diameter of the upper end surface of the tension ring, and the thickness of the shock-absorbing ring corresponds to the difference between the upper end surfaces of the pad supporting sleeve and the tension ring.

[0020] In the leveling construction process, the upper surface of the shock-absorbing ring is flush with the upper end surface of the pad supporting sleeve, and can directly transmit vibration to the anchor bolt, so that the equipment damping can be realized during equipment operation, thereby better assisting equipment operation and also assisting to improve the effect of equipment leveling and installation; and the shock-absorbing ring is installed between the pad supporting sleeve and the tension ring (buried in the concrete after secondary grouting), so that the shock-absorbing ring is more stable and less likely to fall off, thereby better ensuring the stability of equipment leveling and installation.

[0021] The application also discloses a construction method of the anchor bolt leveling structure, which is based on the above-mentioned anchor bolt leveling structure and comprises the following steps during equipment leveling:

[0022] Step one: corresponding pad supporting assemblies are installed on the set anchor bolts;

[0023] Step two: the screw thread pre-tightening force between the tension adjusting mechanism and the anchor bolt is kept in a loosened state, the leveling and elevation adjustment of each pad supporting assembly are performed, so that the upper end surfaces of the pad supporting sleeves reach the set elevation;

[0024] Step three: the pad supporting sleeves are abutted and supported from below by the set supporting pieces; then the screw thread pre-tightening force between the tension adjusting mechanism and the anchor bolt is tightened, the pad supporting assembly and the anchor bolt are tightly matched, and the stress of the pad supporting assembly is directly transmitted to the anchor bolt;

[0025] Step four: the equipment bottom plate is placed on the upper end surfaces of the pad supporting sleeves, and the equipment bottom plate is tightly installed on the pad supporting sleeves by the set fasteners.

[0026] In the scheme, the height position of the pad support assembly on the foundation bolt can be adjusted by adjusting the pre-tightening force of the thread cooperation between the tensioning adjustment mechanism and the foundation bolt, and the pad support assembly can be tightly fixed on the foundation bolt by adjusting the pre-tightening force of the thread cooperation between the tensioning adjustment mechanism and the foundation bolt, and the stress action is directly transmitted to the foundation bolt, which enables the pad support assembly to transmit the pressure (force) applied by the equipment to the foundation bolt, and the pressure is transmitted to the concrete foundation by the foundation bolt. On the one hand, the concrete foundation and the foundation bolt can support the equipment, thereby improving the stability of the equipment installation, on the other hand, the pad iron group is not needed in the scheme to support the equipment or transmit the force applied by the equipment, thereby greatly saving the amount of pad iron, so that the cost of equipment leveling can be saved; and in the scheme, the pad support assembly can be leveled directly during equipment leveling, without the need to place the equipment on the pad support assembly, i.e. "no load" leveling can be achieved, which has the effect of leveling construction safety; at the same time, the number of pad iron groups, the area of a single pad iron group, and the safety factor and load of each group of pad iron (according to the model of the foundation bolt to select the corresponding tensioning ring and pad support sleeve) are not needed to be calculated in the scheme, so that the efficiency of equipment leveling can be improved. Therefore, the construction method of the foundation bolt leveling structure in the scheme can achieve "no load" leveling without calculating the pad iron group related data, so as to ensure the safety of leveling construction, improve the efficiency of equipment leveling and save the cost of leveling.

[0027] Preferably, in step three, when the pad support assembly is tightly fitted with the foundation bolt, the thread tightening friction force between the tensioning adjustment mechanism and the foundation bolt reaches 30% of the pre-warning force set by the foundation bolt, i.e. the force transmission between the pad support assembly and the foundation bolt can be achieved.

[0028] During the leveling construction process, the applicant found that when the thread tightening friction force between the tensioning adjustment mechanism and the foundation bolt reaches 30% of the pre-warning force set by the foundation bolt, the tensioning ring can achieve the required pre-tightening, so that the tensioning adjustment mechanism and the foundation bolt can be tightly fitted, thereby better improving the installation stability of the equipment, saving the cost of equipment leveling and meeting the design requirements of the thread cooperation pre-tightening force of the foundation bolt.

[0029] Preferably, in step three, the support member is a pad iron or a jack, and the support member is removed after the pad support assembly is tightly fitted with the foundation bolt.

[0030] In the leveling construction process, the support pad iron can well support the pad support sleeve, which is beneficial to better fastening between the pad support assembly and the anchor bolt, and thus can better improve the installation stability of the equipment and save the cost of leveling the equipment; and the support member will be removed subsequently, which can also save the cost of leveling the equipment.

[0031] Preferably, in step four, the fastener is a locking nut capable of threadedly cooperating with the anchor bolt.

[0032] In the leveling construction process, the equipment bottom plate is fastened on the anchor bolt by the locking nut, so that the installation stability of the equipment after leveling is better; at the same time, the locking nut has the advantage of low cost, which can save the cost of leveling and installing the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below with reference to the drawings, in which:

[0034] Figure 1 is a front view of the equipment bottom plate during installation in embodiment one;

[0035] Figure 2 is a front view of the anchor bolt leveling structure in embodiment one;

[0036] Figure 3 is a front view of the tightening of the tension ring in embodiment one;

[0037] Figure 4 is a front view of another anchor bolt leveling structure in embodiment two;

[0038] Figure 5 is a logic block diagram of the anchor bolt leveling structure construction method in embodiment three.

[0039] The reference signs in the drawings of the specification include: concrete foundation 1, anchor bolt 2, pad support sleeve 3, tension ring 4, equipment bottom plate 5, fastener 6, support member 7, shock absorbing ring 8. DETAILED DESCRIPTION

[0040] The following will be further described in detail through specific embodiments:

[0041] Embodiment one:

[0042] Applicant has studied the device leveling (leveling) method, the source and calculation of the gusset area formula, and the use of the safety factor in the existing standard GB50231-2009 "General Specification for Construction and Acceptance of Mechanical Equipment Installation Engineering", then analyzed the stress state of the gusset from the stress state of the foundation of the equipment installation, and gave the calculation method and derivation process of the gusset area and the scope of use. The research results are published in Metallurgical Equipment, No. 2, April 2020, pp. 45-48.

[0043] On the basis of this research, the applicant further puts forward a foundation bolt leveling structure.

[0044] As shown in Figure 1 : A foundation bolt 2 leveling structure, comprising a foundation bolt 2 arranged in a concrete foundation 1, further comprising a gusset plate supporting assembly for supporting a device bottom plate 5 and being threadedly matched with the foundation bolt 2, and the gusset plate supporting assembly has a tensioning adjusting mechanism for adjusting the pre-tightening force of the thread cooperation between the gusset plate supporting assembly and the foundation bolt 2.

[0045] In the leveling construction process, according to the installation hole position of the device bottom plate 5, a corresponding number of foundation bolts 2 are arranged; first, the foundation bolt 2 is embedded in the concrete foundation 1, then the gusset plate supporting assembly is installed on the foundation bolt 2, and the existing leveling means is used to level the gusset plate supporting assembly, then the tensioning adjusting mechanism is used to tighten the installation position of the gusset plate supporting assembly, finally the device bottom plate 5 is placed on the gusset plate supporting assembly and the device bottom plate 5 is locked.

[0046] In the embodiment, the height position of the pad support assembly on the foundation bolt 2 can be adjusted by adjusting the pre-tightening force of the screw thread cooperation between the tensioning adjustment mechanism and the foundation bolt 2, and the pad support assembly can be fastened on the foundation bolt 2 and the stress is directly transmitted to the foundation bolt 2 by adjusting the pre-tightening force of the screw thread cooperation between the tensioning adjustment mechanism and the foundation bolt 2, that is, the pad support assembly can transmit the pressure (force) applied by the equipment to the foundation bolt 2, and the foundation bolt 2 can correspondingly transmit the pressure to the concrete foundation 1. On the one hand, the equipment can be supported by the foundation bolt 2 and the concrete foundation 1, so that the equipment can be stably installed. On the other hand, the pad iron group is no longer needed to support the equipment or transmit the force applied by the equipment in the embodiment, so that the amount of pad iron can be greatly saved, and the cost of equipment leveling can be saved. In addition, the pad support assembly in the embodiment can be tightly installed on the foundation bolt 2, so that the pad support assembly can be directly leveled during equipment leveling, and the equipment does not need to be placed on the pad support assembly, that is, the "no load" leveling can be realized. Such leveling method has the effects of leveling construction safety and speed. At the same time, the position of the pad support assembly can be adjusted by the set elevation in the embodiment, and the data such as the number of pad iron groups, the area of a single pad iron group, the safety factor and load of each pad iron group (the corresponding pad support assembly is selected according to the model of the foundation bolt 2) need not be calculated, so that the leveling efficiency of the equipment can be improved. Therefore, the foundation bolt 2 leveling structure in the embodiment does not need to set the pad iron group for leveling, so that the "no load" leveling can be realized and the related data of the pad iron group need not be calculated, so that the safety of leveling construction can be ensured, the equipment leveling efficiency can be improved, and the leveling cost can be saved.

[0047] In the specific implementation process, the pad support assembly includes a pad support sleeve 3 and a tensioning ring 4 as a tensioning adjustment mechanism. Figure 2 and Figure 3 As shown in the drawings, the pad support sleeve 3 is sleeved on the tensioning ring 4 and is in interference fit with the outer circumferential side of the tensioning ring 4, and the upper end surface of the pad support sleeve 3 serves as a height-adjustable mounting and supporting working surface for placing the equipment bottom plate 5.

[0048] In the leveling construction process, the corresponding pad support assembly is installed on each anchor bolt 2, then the pre-tightening force between the tensioning adjusting mechanism and the anchor bolt 2 is kept in a loosened state, the leveling and elevation adjustment of each pad support assembly is performed, the upper end surface of the pad support sleeve 3 reaches the set elevation, the pad support sleeve 3 is supported by the support 7, and the pre-tightening force between the tensioning adjusting mechanism and the anchor bolt 2 is tightened, so that the pad support assembly is tightly matched with the anchor bolt 2, the stress of the pad support assembly is directly transmitted to the anchor bolt 2, and finally the equipment bottom plate 5 is placed on the upper end surface of the pad support sleeve 3, and the equipment bottom plate 5 is tightly installed on the pad support sleeve 3 through the fastener 6.

[0049] In the embodiment, the equipment bottom plate 5 transmits the pressure to the pad support sleeve 3, the pad support sleeve 3 transmits the pressure to the anchor bolt 2 through the tensioning ring 4, the anchor bolt 2 transmits the pressure applied by the equipment to the concrete foundation 1, on the one hand, the concrete foundation 1 and the anchor bolt 2 can support the equipment, thereby improving the stability of the equipment installation, on the other hand, in the embodiment, the equipment does not need to be supported by the group of shims or transmit the force applied by the equipment, thereby greatly saving the amount of shims, saving the cost of equipment leveling, and directly leveling the pad support assembly during equipment leveling, that is, the "no load" leveling can be realized, which has the effect of leveling construction safety, and the number of groups of shims, the area of each group of shims, the safety factor and load of each group of shims and other data do not need to be calculated (the corresponding tensioning ring 4 and pad support sleeve 3 are selected according to the model of the anchor bolt 2), thereby improving the efficiency of equipment leveling.

[0050] In the specific implementation process, the outer peripheral wall of the tensioning ring 4 is a cylindrical friction surface extending parallel to the central axis of the anchor bolt 2, and the inner wall of the pad support sleeve 3 is a cylindrical friction surface capable of closely fitting the outer peripheral wall of the tensioning ring 4.

[0051] In the leveling construction process, the pad support sleeve 3 and the tensioning ring 4 are in a tight interference fit through the cylindrical friction surfaces, which can ensure the stability of the cooperation between the pad support sleeve 3 and the tensioning ring 4, on the one hand, the equipment can be stably installed, on the other hand, the group of shims is not needed to support the equipment or transmit the force applied by the equipment, thereby greatly saving the amount of shims and saving the cost of equipment leveling, in addition, the pad support sleeve 3 and the tensioning ring 4 with the cylindrical friction surface structure are easy to process, which is conducive to saving the cost of equipment leveling.

[0052] In the specific implementation process, the upper end surface of the pad support sleeve 3 is higher than or equal to the upper end surface of the tensioning ring 4.

[0053] In the process of leveling construction, the pad supporting sleeve 3 is used to support the equipment bottom plate 5, and the tension ring 4 is used to transmit the pressure applied by the equipment to the foundation bolt 2. In this embodiment, the upper end surface of the pad supporting sleeve 3 is higher than or equal to the upper end surface of the tension ring 4, which is conducive to better supporting the equipment by the pad supporting sleeve 3, and also conducive to better transmitting the force borne by the pad supporting sleeve 3 by the tension ring 4, so that the stability of the equipment installation can be better improved and the cost of equipment leveling can be saved.

[0054] Embodiment two:

[0055] The difference between this embodiment and embodiment one is that this embodiment further includes a shock-absorbing ring 8.

[0056] As shown in Figure 4 : In this embodiment, the upper end surface of the pad supporting sleeve 3 is higher than the upper end surface of the tension ring 4, and the upper end of the tension ring 4 is provided with a shock-absorbing ring 8 sleeved on the foundation bolt 2, which helps to reduce the vibration of the equipment and directly transmits the vibration to the foundation bolt 2; the inner diameter of the shock-absorbing ring 8 corresponds to the outer diameter of the foundation bolt 2, the outer diameter of the shock-absorbing ring 8 corresponds to the outer diameter of the upper end surface of the tension ring 4, and the thickness of the shock-absorbing ring 8 corresponds to the difference between the upper end surface of the pad supporting sleeve 3 and the upper end surface of the tension ring 4.

[0057] In the process of leveling construction, the upper surface of the shock-absorbing ring 8 is flush with the upper end surface of the pad supporting sleeve 3, and can directly transmit the vibration to the foundation bolt 2, so that the shock-absorbing of the equipment can be realized when the equipment is working, thereby better assisting the equipment working, and also assisting to improve the effect of equipment leveling and installation; and installing the shock-absorbing ring 8 between the pad supporting sleeve 3 and the tension ring 4 (buried in the concrete after secondary grouting), so that the shock-absorbing ring 8 is more stable and less likely to fall off, thereby better ensuring the stability of equipment leveling and installation.

[0058] Embodiment three:

[0059] This embodiment discloses a construction method of the foundation bolt leveling structure based on the foundation bolt leveling structure in embodiment one. As shown in Figure 5 : In the process of equipment leveling, this embodiment includes the following steps:

[0060] Step one: installing the pad supporting assembly on each foundation bolt correspondingly;

[0061] Step two: keeping the pre-tightening force of the thread cooperation between the tension adjusting mechanism and the foundation bolt in a loosening state, leveling and adjusting the elevation of each pad supporting assembly, so that the upper end surface of the pad supporting sleeve reaches the set elevation;

[0062] Step three: abut and support the pad support sleeve from below by using the set support; then adjust the pre-tightening force of the screw thread cooperation between the tension adjusting mechanism and the anchor bolt to realize the tight cooperation between the pad support assembly and the anchor bolt, so that the stress of the pad support assembly is directly transmitted to the anchor bolt;

[0063] Step four: place the equipment base plate on the upper end face of the pad support sleeve, and fasten the equipment base plate on the pad support sleeve by the set fastener.

[0064] In this embodiment, the pad support assembly can be adjusted in height on the anchor bolt by adjusting the pre-tightening force of the screw thread cooperation between the tension adjusting mechanism and the anchor bolt, and the pad support assembly can be tightly fixed on the anchor bolt and the stress is directly transmitted to the anchor bolt by adjusting the pre-tightening force of the screw thread cooperation between the tension adjusting mechanism and the anchor bolt, which enables the pad support assembly to transmit the pressure (force) exerted by the equipment to the anchor bolt, and the anchor bolt transmits the pressure to the concrete foundation. On the one hand, the concrete foundation and the anchor bolt can support the equipment, thereby improving the stability of the equipment installation. On the other hand, in this embodiment, the equipment does not need to be supported by the pad iron group or the force exerted by the equipment does not need to be transmitted by the pad iron group, thereby greatly saving the amount of pad iron, enabling the cost of equipment leveling to be saved; and in this embodiment, the pad support assembly can be leveled directly during equipment leveling, without the need to place the equipment on the pad support assembly, i.e. "no load" leveling can be achieved, which has the effect of leveling construction safety; at the same time, in this embodiment, the number of pad iron groups, the area of a single pad iron group, the safety factor and load of each pad iron group, and other data (the corresponding tension ring and pad support sleeve are selected according to the model of the anchor bolt) do not need to be calculated, which enables the efficiency of equipment leveling to be improved. Therefore, the construction method of the anchor bolt leveling structure in this embodiment can achieve "no load" leveling without the need to calculate the pad iron group related data, so as to ensure the safety of leveling construction, improve the efficiency of equipment leveling, save the cost of leveling, and ensure the stability of equipment leveling and installation.

[0065] In the specific implementation process, in step three, when the pad support assembly is tightly cooperated with the anchor bolt, the screw thread fastening friction force between the tension adjusting mechanism and the anchor bolt reaches 30% of the warning force set by the anchor bolt, i.e. the stress transmission between the pad support assembly and the anchor bolt is realized.

[0066] In the leveling construction process, the applicant finds that when the thread fastening friction force between the tensioning adjusting mechanism and the foundation bolt reaches 30% of the early warning force set by the foundation bolt, the tensioning ring can achieve the pre-tightening required by the design, so that the tensioning adjusting mechanism and the foundation bolt can be well fastened and matched, thereby better improving the installation stability of the equipment and saving the cost of equipment leveling and meeting the design requirement of the foundation bolt thread matching pre-tightening force.

[0067] In the specific implementation process, in step three, the support is a pad iron or a jack, and the support is removed after the pad support assembly is fastened and matched with the foundation bolt.

[0068] In the leveling construction process, the pad iron can well support the pad support sleeve, which is conducive to better fastening between the pad support assembly and the foundation bolt, thereby better improving the installation stability of the equipment and saving the cost of equipment leveling; and the support will be removed subsequently, which also saves the cost of equipment leveling.

[0069] In the specific implementation process, in step four, the fastener is a locking nut that can be matched with the corresponding thread of the foundation bolt.

[0070] In the leveling construction process, the equipment bottom plate is fastened on the foundation bolt by the locking nut, so that the installation stability of the equipment after leveling is better; at the same time, the locking nut has the advantage of low cost, which can save the cost of equipment leveling and installation.

[0071] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail, and the ordinary technical personnel in the art know all the ordinary technical knowledge in the art before the application date or the priority date, can know all the prior art in the field, and have the ability to apply conventional experimental means before that date, and the ordinary technical personnel in the art can improve and implement the scheme under the guidance of the present application, some typical known structures or known methods should not be an obstacle for the ordinary technical personnel in the art to implement the present application. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The scope of protection claimed in this application should be subject to the content of its claims, and the specific implementation mode in the specification can be used to explain the content of the claims.

Claims

1. A foundation bolt levelling structure comprising a foundation bolt disposed within a concrete foundation, characterised in that: The application also discloses a base plate supporting assembly for supporting the equipment base plate and being threadedly matched with the anchor bolt, and the base plate supporting assembly is provided with a tension adjusting mechanism for adjusting the pre-tightening force of the thread matching between the base plate supporting assembly and the anchor bolt. The base plate supporting assembly comprises a base plate supporting sleeve and a tension ring as the tension adjusting mechanism; the tension ring is threadedly matched with the anchor bolt and can adjust the pre-tightening force of the thread matching between the tension ring and the anchor bolt; the base plate supporting sleeve is matched with the outer periphery of the tension ring and the upper end surface of the base plate supporting sleeve is used as a height-adjustable installation supporting working surface for placing the equipment base plate. The upper end surface of the base plate supporting sleeve is higher than the upper end surface of the tension ring, and the upper end of the tension ring is provided with a shock-absorbing ring which is sleeved on the anchor bolt; the inner diameter of the shock-absorbing ring corresponds to the outer diameter of the anchor bolt, the outer diameter of the shock-absorbing ring corresponds to the outer diameter of the upper end surface of the tension ring, and the thickness of the shock-absorbing ring corresponds to the difference between the base plate supporting sleeve and the upper end surface of the tension ring. The outer periphery wall of the tension ring is a cylindrical friction surface which is parallel to the central axis of the anchor bolt; the inner wall of the base plate supporting sleeve is a cylindrical friction surface which can be closely matched with the outer periphery wall of the tension ring; the base plate supporting sleeve and the tension ring are in a tight interference fit through the cylindrical friction surfaces. The upper surface of the shock-absorbing ring is flush with the upper end surface of the base plate supporting sleeve, and can directly transmit the vibration to the anchor bolt. The shock-absorbing ring is installed between the base plate supporting sleeve and the tension ring and is embedded in the concrete after secondary grouting.

2. A method of constructing a foundation bolt levelling structure, characterised by, Based on the anchor bolt leveling structure in claim 1, the equipment leveling construction comprises the following steps during the construction: Step one: installing the base plate supporting assembly on each anchor bolt; Step two: keeping the pre-tightening force of the thread matching between the tension adjusting mechanism and the anchor bolt in a loosened state, adjusting the leveling and elevation of each base plate supporting assembly, so that the upper end surface of the base plate supporting sleeve reaches the set elevation; Step three: supporting the base plate supporting sleeve from below by using the supporting member, then adjusting the pre-tightening force of the thread matching between the tension adjusting mechanism and the anchor bolt, realizing the fastening matching between the base plate supporting assembly and the anchor bolt, so that the stress of the base plate supporting assembly is directly transmitted to the anchor bolt; Step four: placing the equipment base plate on the upper end surface of the base plate supporting sleeve, and fastening the equipment base plate on the base plate supporting sleeve by using the fastening member.

3. The method of claim 2, wherein: In step three, when the base plate supporting assembly is fastened with the anchor bolt, the thread fastening friction force between the tension adjusting mechanism and the anchor bolt reaches 30% of the pre-warning force of the anchor bolt, so that the stress transmission between the base plate supporting assembly and the anchor bolt is realized.

4. The method of claim 3, wherein: In step three, the supporting member is a shim or a jack, and the supporting member is removed after the fastening matching between the base plate supporting assembly and the anchor bolt.

5. The method of claim 3, wherein: In step four, the fastening member is a locking nut which can be threadedly matched with the anchor bolt.

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