Foundation bolt protection device

Abstract

The utility model discloses a foundation bolt protection device which comprises a foundation bolt, one end of the foundation bolt penetrates through a foundation ring and then is embedded into a screw hole in the bottom of a seat ring, the foundation bolt and the screw hole are in threaded fit, a lower protection device is embedded in the foundation ring, and the foundation bolt penetrates through the lower protection device. One end of the lower protection device penetrates out of the bottom of the foundation ring and is detachably provided with a plugging cover, and the other end of the lower protection device penetrates out of the top of the foundation ring and is detachably provided with an upper protection device. The upper protection device comprises two half protection devices which are symmetrically arranged, the half protection devices are spliced and matched to form the complete upper protection device, and the top of the upper protection device is sleeved with a volute sleeve; the volute sleeve comprises the two half sleeves which are oppositely arranged, the half sleeves are spliced and matched to form the complete volute sleeve, the volute sleeve and the upper protection device are in detachable limiting fit, the volute sleeve and the seat ring are in detachable fixed fit, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower seat ring volute installation engineering, in particular to an anchor bolt protection device. Background Art

[0002] As an important part of the turbine, the seat ring volute bears the huge water pressure of power generation and pumping. During installation, the seat ring volute is required to fit tightly with the concrete without any gap to avoid vibration during the operation of the unit, thereby ensuring the safety of the unit operation.

[0003] In order to ensure the installation quality of the seat ring and volute, the lower anchor bolts are generally designed to be stretched and fixed twice, before and after pouring concrete. To ensure the safety and quality of the anchor bolt stretching, it must be isolated from the concrete to prevent the concrete from damaging the anchor bolt body.

[0004] For example: After the seat ring and volute of the pumped storage unit are hoisted to the foundation pit, support bases are respectively provided at the bottom of the seat ring and the volute, and the whole circle is evenly arranged. After the roundness and flatness of the upper and lower flanges of the seat ring and the verticality and elevation of the outlet flange are adjusted, the lower part needs to pass through the foundation ring to insert the anchor bolts to fix the entire seat ring and volute. Before pouring concrete, the seat ring and volute need to be pre-stretched. After pouring concrete, in order to reduce the vibration of the seat ring and volute and fit more tightly with the concrete, a secondary stretching is required.

[0005] The following problems exist in the protective device for anchor bolts:

[0006] 1. Lack of anchor bolt protection device to isolate concrete;

[0007] 2. The protective device commonly used on site is usually a two-stage design, that is, the lower cylinder that comes with the factory and the upper cylinder that is subsequently welded. Because a welded volute sleeve will be set on the seat ring, the excess upper cylinder needs to be cut a second time during installation so that its length is just enough to fit between the volute sleeve and the lower cylinder, and the upper and lower ends of the upper cylinder are welded. Since the upper cylinder is composed of two semicircular tiles, it is also necessary to weld the butt joints to complete the sealing of the entire anchor bolt. This method requires secondary cutting on the one hand and a large amount of welding work on the other, which results in high installation difficulty and low installation efficiency. Utility Model Content

[0008] The utility model provides an anchor bolt protection device, aiming to solve the above-mentioned problems of lack of protection devices for anchor bolts against concrete isolation, high difficulty in installation and low efficiency caused by secondary cutting and a large number of welding processes in existing protection devices.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0010] A foundation bolt protection device, comprising an anchor bolt, one end of the anchor bolt passes through a base ring and is embedded in a screw hole at the bottom of a seat ring, and the anchor bolt and the screw hole form a threaded fit, a lower protection device is embedded in the base ring, and the anchor bolt passes through the lower protection device, one end of the lower protection device passes through the bottom of the base ring and is detachably provided with a blocking cover, and the other end of the lower protection device passes through the top of the base ring and is detachably provided with an upper protection device;

[0011] The upper protection device comprises two symmetrically arranged half protection devices, the half protection devices are assembled and matched to form a complete upper protection device, the anchor bolts pass through the upper protection device, and the top of the upper protection device is sleeved with a volute sleeve;

[0012] The volute sleeve comprises two half sleeves arranged in a pair, the half sleeves are assembled and matched to form a complete volute sleeve, and the volute sleeve forms a detachable limiting fit with the upper protection device, and the volute sleeve forms a detachable fixed fit with the seat ring.

[0013] Preferably, the lower protection device includes a lower protection tube, and the anchor bolt is concentric and coaxial with the lower protection tube, one end of the lower protection tube close to the seat ring passes through the base ring and is provided with a lower docking flange, and the other end of the lower protection tube away from the seat ring passes through the base ring and is detachably sealed with the sealing cover.

[0014] As a more preferred embodiment, the lower protective tube and the lower docking flange are integrally formed.

[0015] Furthermore, the outer wall of the lower protective tube is welded and fixedly matched with the base ring.

[0016] Furthermore, the sealing cover includes a sealing disk that is concentric and coaxial with the lower protective tube. A boss is concentric and coaxially provided on one side of the sealing disk close to the lower protective tube. The boss is embedded in the bottom opening of the lower protective tube to form a sealing fit, and the sealing disk is tightly attached to the lower protective tube.

[0017] Specifically, the sealing disk is coaxially penetrated by the anchor bolt, and the end thread of the anchor bolt is matched with a fastening nut, and the fastening nut and the lower protective tube form a press fit on the sealing disk.

[0018] Preferably, the semi-protective device comprises a semi-protective cylinder and a semi-upper docking flange. The semi-protective cylinder and the semi-upper docking flange are concentric and coaxial and integrally formed. The semi-protective cylinder is assembled to form a complete upper protective cylinder, and the semi-upper docking flange is assembled to form a complete upper docking flange.

[0019] As a more preferred option, a sealing gasket is clamped between the complete upper docking flange formed by assembling the half upper docking flanges and the lower docking flange of the lower protective device, and the complete upper docking flange and the lower docking flange are fixedly matched to form a detachable flange by fastening bolts.

[0020] Furthermore, a socket is provided at one end of the tube wall of the half protective tube, and a plug is provided at the other end of the tube wall of the half protective tube, and the socket corresponds to the plug. When the half protective tubes are assembled and matched to form a complete upper protective tube, the plug of one half protective tube is tightly embedded in the socket of the other half protective tube.

[0021] Beneficial effects of the utility model:

[0022] 1. The utility model forms a relatively sealed complete cylinder through the volute sleeve, the upper protection device, the lower protection device and the blocking cover, which can effectively isolate the concrete and greatly reduce the impact of the concrete on the anchor bolts;

[0023] 2. The utility model designs the upper protection device as an assembled structure, and the volute sleeve is also an assembled structure, which is convenient for installation and avoids secondary cutting. The excess part of the upper protection device can be directly embedded in the volute sleeve after assembly;

[0024] 3. The upper protection device of the utility model is connected to the lower protection device through a flange, and the upper protection device is assembled with a socket and a plug, and the bottom of the lower protection device is also provided with a compressed sealing cover, which greatly reduces the required welding work. The welding process is mainly concentrated on the assembly and fixation of the volute sleeve, which improves work efficiency and reduces installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the utility model from a top perspective;

[0026] Figure 2 This is a schematic diagram of the bottom perspective structure of the utility model;

[0027] Figure 3 This is a schematic diagram of disassembling the volute sleeve of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the top of the upper protection device of the utility model;

[0029] Figure 5 This is a disassembly diagram of the upper protection device of the utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the flange end after the upper protection device of the utility model is disassembled;

[0031] Figure 7 This is a schematic diagram of disassembling the blocking cover of the utility model;

[0032] Figure 8 This is a schematic diagram of the use and installation of the utility model;

[0033] In the figure: 1, lower protection device; 101, lower protection tube; 102, lower docking flange;

[0034] 2. Upper protection device; 201. Half protection device; 2011. Half protection cylinder; 2012. Half upper docking flange; 203. Fixing hole; 204. Socket; 205. Socket;

[0035] 3. Sealing gasket; 4. Fastening bolts;

[0036] 5. Volute sleeve; 501. Half sleeve;

[0037] 6. Sealing cover; 601. Sealing plate; 602. Boss;

[0038] 7. Anchor bolt; 8. Fastening nut; 9. Seat ring; 10. Foundation ring; 11. Screw hole. DETAILED DESCRIPTION

[0039] As follows, embodiments are further described with reference to the accompanying drawings.

[0040] like Figure 1 to Figure 8 As shown, as a preferred embodiment 1, a foundation bolt protection device comprises an anchor bolt 7, one end of the anchor bolt 7 penetrates through a base ring 10 and is embedded in a screw hole 11 at the bottom of a seat ring 9, and the anchor bolt 7 and the screw hole 11 form a threaded fit, characterized in that a lower protection device 1 is embedded in the base ring 10, and the anchor bolt 7 penetrates through the lower protection device 1, one end of the lower protection device 1 penetrates through the bottom of the base ring 10 and is detachably provided with a blocking cover 6, and the other end of the lower protection device 1 penetrates through the top of the base ring 10 and is detachably provided with an upper protection device 2;

[0041] The upper protection device 2 comprises two symmetrically arranged half protection devices 201, the half protection devices 201 are assembled and matched to form a complete upper protection device 2, the anchor bolts 7 pass through the upper protection device 2, and the top of the upper protection device 2 is sleeved with a volute sleeve 5;

[0042] The volute sleeve 5 includes two half sleeves 501 arranged in a pair, and the half sleeves 501 are assembled and matched to form a complete volute sleeve 5, and the volute sleeve 5 forms a detachable limiting fit with the upper protection device 2, and the volute sleeve 5 forms a detachable fixed fit with the seat ring 9.

[0043] Embodiment 1 provides an anchor bolt protection device, wherein a lower protection device 1 and an upper protection device 2 cooperate to form a cylindrical shell, surrounding an anchor bolt 7, the top of the cylindrical shell is closed and limited by a volute sleeve 5, and forms a detachable fixed fit with a seat ring 9, and the bottom of the cylindrical shell is blocked by a blocking cover 6, so that the cylindrical shell is in a relatively closed state, preventing the anchor bolt 7 from directly contacting the cement, and protecting the anchor bolt 7;

[0044] Secondly, the lower protection device 1 is used for foundation positioning, which is generally the first fixed part. The lower protection device 1 is passed through the foundation ring 10 and fixed on the foundation ring 10, and then the anchor bolt 7 is installed, so that the anchor bolt 7 passes through the lower protection device 1 and forms a threaded match with the screw hole 11 at the bottom of the seat ring 9. The upper protection device 2 is an assembled structure. The anchor bolt 7 is sandwiched in the middle by the relatively arranged half protection devices 201, so that the half protection device 201 forms a complete upper protection device 2. The bottom of the complete upper protection device 2 and the top of the upper protection device 1 are connected by a flange. The top of the complete upper protection device 2 is provided with a volute sleeve 5, and the volute sleeve 5 is also an assembled structure. The top of the upper protection device 2 is clamped in the middle by the relatively arranged half sleeves 501, so that the half sleeves 501 form a complete volute sleeve 5, and the top of the upper protection device 2 is clamped and limited. The volute sleeve 5 forms a detachable fixed fit with the seat ring 9, which reduces the proportion of the welding process as much as possible. At the same time, there is no need to perform secondary cutting because the sleeve of the upper protection device 2 is too long, which is convenient for on-site operation and improves the efficiency of on-site installation.

[0045] As a preferred embodiment 1, the lower protection device 1 includes a lower protection tube 101, and the anchor bolt 7 is concentric and coaxial with the lower protection tube 101. The end of the lower protection tube 101 close to the seat ring 9 passes through the base ring 10 and is provided with a lower docking flange 102, which is convenient for fixed connection with the upper protection device 2. The other end of the lower protection tube 101 away from the seat ring 9 passes through the base ring 10 and is detachably sealed with the sealing cover 6 to ensure the sealing of the bottom of the protection shell.

[0046] As a preferred embodiment 2, the lower protective tube 101 and the lower docking flange 102 are integrally formed for ease of use.

[0047] As a preferred embodiment 3, the outer wall of the lower protection tube 101 is welded and fixedly matched with the base ring 10 to facilitate alignment.

[0048] Generally speaking, the lower protective tube 101 has been welded to the base ring 10 before installation, that is, it is produced as a whole by the manufacturer and comes with this mechanism when it leaves the factory. No temporary welding is required for on-site installation. It is necessary to ensure that the lower docking flange 102 is higher than the top of the base ring 10.

[0049] As a preferred embodiment 4, the sealing cover 6 includes a sealing disk 601 which is concentric and coaxial with the lower protective tube 101. A boss 602 is concentrically and coaxially provided on one side of the sealing disk 601 close to the lower protective tube 101. The boss 602 is embedded in the bottom opening of the lower protective tube 101 to form a sealing fit, and the sealing disk 601 is tightly attached to the lower protective tube 101.

[0050] As a preferred embodiment 5, the sealing plate 601 is coaxially penetrated by the anchor bolt 7, and the end thread of the anchor bolt 7 is threadedly matched with a fastening nut 8, and the fastening nut 8 and the lower protective tube 101 form a press fit on the sealing plate 601.

[0051] The blocking plate 601 and the boss 602 are both annular structures, and the anchor bolt 7 passes coaxially through the middle opening. When the fastening nut 8 moves upward along the thread of the anchor bolt 7, the blocking plate 601 is gradually tightened, so that the boss 602 is completely embedded in the bottom opening of the lower protective tube 101 to form a blocking fit, and finally the blocking plate 601 is tightened to cover the bottom opening of the lower protective tube 101 to complete the blocking.

[0052] As a preferred embodiment 6, a sealing rubber ring is clamped between the fastening nut 8 and the sealing disk 601, and the sealing rubber ring is sleeved on the anchor bolt 7 to seal the opening of the sealing disk 601 after the fastening nut 8 is tightened, thereby further ensuring the sealing performance.

[0053] As a preferred embodiment 7, the semi-protection device 201 includes a semi-protection tube 2011 and a semi-upper docking flange 2012. The semi-protection tube 2011 and the semi-upper docking flange 2012 are coaxial and integrally formed. The semi-protection tube 2011 is assembled to form a complete upper protection tube, and the semi-upper docking flange 2012 is assembled to form a complete upper docking flange. It is convenient to assemble from both sides of the anchor bolt 7, and after assembly, the upper protection tube surrounds the anchor bolt 7.

[0054] As a preferred embodiment 8, the half protective tube 2011 and the corresponding half upper docking flange 2012 are integrally formed for easy assembly and use, and the cross-section of the half protective tube 2011 corresponds to the cross-section of the half upper docking flange 2012 .

[0055] As a preferred embodiment 9, a sealing gasket 3 is sandwiched between the complete upper docking flange formed by assembling and matching the half upper docking flange 2012 and the lower docking flange 102 of the lower protection device 1, and the complete upper docking flange and the lower docking flange 102 are fixedly matched to form a detachable flange by fastening bolts 4 to ensure a sealed connection.

[0056] As a preferred embodiment 10, the lower docking flange 102 is provided with a plurality of fixing holes 203 at equal intervals around the axis, the sealing gasket 3 is also provided with fixing holes 203 whose number and positions correspond to the number and positions of the fixing holes 203 on the lower docking flange 102, and the complete upper docking flange is provided with fixing holes 203 which correspond to the fixing holes 203 on the lower docking flange 102 one by one. During fixed installation, the fixing holes 203 on the complete upper docking flange, the sealing gasket 3 and the lower docking flange 102 correspond to each other and are connected, and each connected fixing hole 203 is connected by a tightening bolt 4 to form a detachable fixed installation.

[0057] As a preferred embodiment 11, a socket 204 is provided at one end of the wall of the half protection tube 2011, and a plug 205 is provided at the other end of the wall of the half protection tube 2011, and the socket 204 corresponds to the plug 205. When the half protection tubes 2011 are assembled to form a complete upper protection tube, the plug 205 of one half protection tube 2011 is tightly embedded in the socket 204 of the other half protection tube 2011. This facilitates docking and further enhances the sealing after assembly to prevent cement from entering.

[0058] As a preferred embodiment 12, a sealing ring is embedded in the inner wall of the socket 204 to further ensure the sealing of the plug 205 after it is embedded.

[0059] As a preferred embodiment 13, the method of using the protection structure is as follows:

[0060] Step 1: Before leaving the factory, weld the lower protection device 1 to the base ring 10 to complete the fixed installation of the lower protection device 1;

[0061] Step 2: When in use, first insert the anchor bolt 7 from the bottom of the base ring 10 through the lower protection device 1 and then extend it into the screw hole 11 at the bottom of the seat ring 9, and form a threaded fit with the screw hole 11;

[0062] Step 3: Assemble the upper protection device 2 on both sides of the anchor bolt 7 and surround the anchor bolt 7. The bottom of the upper protection device 2 is fixedly matched with the top of the lower protection device 1 by the fastening bolts 4, the flange and the sealing gasket 3;

[0063] Step 4: Assemble the volute sleeve 5 on both sides of the top of the upper protective device 2, so that the volute sleeve 5 surrounds and presses the upper protective device 2, and then weld the assembly position of the volute sleeve 5, and weld the top of the volute sleeve 5 to the bottom of the seat ring 9, and finally weld the bottom of the volute sleeve 5 to the upper protective device 2 to ensure the overall sealing.

[0064] The working principle of this utility model:

[0065] Embodiment 1 provides an anchor bolt protection device, wherein a lower protection device 1 and an upper protection device 2 cooperate to form a cylindrical shell, surrounding an anchor bolt 7, the top of the cylindrical shell is closed and limited by a volute sleeve 5, and forms a detachable fixed fit with a seat ring 9, and the bottom of the cylindrical shell is blocked by a blocking cover 6, so that the cylindrical shell is in a relatively closed state, preventing the anchor bolt 7 from directly contacting the cement, and protecting the anchor bolt 7;

[0066] Secondly, the lower protection device 1 is used for foundation positioning, which is generally the first fixed part. The lower protection device 1 is passed through the foundation ring 10 and fixed on the foundation ring 10, and then the anchor bolt 7 is installed, so that the anchor bolt 7 passes through the lower protection device 1 and forms a threaded match with the screw hole 11 at the bottom of the seat ring 9. The upper protection device 2 is an assembled structure. The anchor bolt 7 is sandwiched in the middle by the relatively arranged half protection devices 201, so that the half protection device 201 forms a complete upper protection device 2. The bottom of the complete upper protection device 2 and the top of the upper protection device 1 are connected by a flange. The top of the complete upper protection device 2 is provided with a volute sleeve 5, and the volute sleeve 5 is also an assembled structure. The top of the upper protection device 2 is clamped in the middle by the relatively arranged half sleeves 501, so that the half sleeves 501 form a complete volute sleeve 5, and the top of the upper protection device 2 is clamped and limited. The volute sleeve 5 forms a detachable fixed fit with the seat ring 9, which reduces the proportion of the welding process as much as possible. At the same time, there is no need to perform secondary cutting because the sleeve of the upper protection device 2 is too long, which is convenient for on-site operation and improves the efficiency of on-site installation.

Claims

1. A foundation bolt protection device, comprising an anchor bolt (7), one end of the anchor bolt (7) passing through a base ring (10) and then embedded in a screw hole (11) at the bottom of a seat ring (9), and the anchor bolt (7) and the screw hole (11) form a threaded fit, characterized in that: The base ring (10) is embedded with a lower protection device (1), and the anchor bolt (7) passes through the lower protection device (1); one end of the lower protection device (1) passes through the bottom of the base ring (10) and is detachably provided with a blocking cover (6); the other end of the lower protection device (1) passes through the top of the base ring (10) and is detachably provided with an upper protection device (2); The upper protection device (2) comprises two symmetrically arranged half protection devices (201), the half protection devices (201) are assembled to form a complete upper protection device (2), the anchor bolts (7) pass through the upper protection device (2), and the top of the upper protection device (2) is sleeved with a volute sleeve (5); The volute sleeve (5) comprises two half sleeves (501) arranged in a pair, the half sleeves (501) are assembled to form a complete volute sleeve (5), the volute sleeve (5) and the upper protection device (2) form a detachable limiting fit, and the volute sleeve (5) and the seat ring (9) form a detachable fixed fit.

2. The anchor bolt protection device according to claim 1, characterized in that: The lower protection device (1) comprises a lower protection tube (101), and the anchor bolt (7) is coaxial with the lower protection tube (101); one end of the lower protection tube (101) close to the seat ring (9) passes through the base ring (10) and is provided with a lower docking flange (102); the other end of the lower protection tube (101) away from the seat ring (9) passes through the base ring (10) and is detachably sealed with the blocking cover (6).

3. The anchor bolt protection device according to claim 2, characterized in that: The lower protective cylinder (101) and the lower docking flange (102) are integrally formed.

4. The anchor bolt protection device according to claim 3, characterized in that: The outer wall of the lower protective cylinder (101) is welded and fixedly matched with the base ring (10).

5. The anchor bolt protection device according to claim 4, characterized in that: The blocking cover (6) comprises a blocking disk (601) which is coaxial with the lower protective tube (101). A boss (602) is coaxially provided on one side of the blocking disk (601) close to the lower protective tube (101). The boss (602) is embedded in the bottom opening of the lower protective tube (101) to form a blocking fit. The blocking disk (601) is in close contact with the lower protective tube (101).

6. The anchor bolt protection device according to claim 5, characterized in that: The sealing disk (601) is coaxially penetrated by the anchor bolt (7), and the end thread of the anchor bolt (7) is threadedly matched with a fastening nut (8), and the fastening nut (8) and the lower protective tube (101) form a press fit with the sealing disk (601).

7. The anchor bolt protection device according to claim 1, characterized in that: The semi-protective device (201) comprises a semi-protective cylinder (2011) and a semi-upper docking flange (2012); the semi-protective cylinder (2011) and the semi-upper docking flange (2012) are coaxial and integrally formed; the semi-protective cylinder (2011) is assembled to form a complete upper protective cylinder, and the semi-upper docking flange (2012) is assembled to form a complete upper docking flange.

8. The anchor bolt protection device according to claim 7, characterized in that: A sealing gasket (3) is clamped between the complete upper docking flange formed by assembling the half upper docking flange (2012) and the lower docking flange (102) of the lower protection device (1), and the complete upper docking flange and the lower docking flange (102) are fastened by bolts (4) to form a detachable flange fixed fit.

9. The anchor bolt protection device according to claim 8, characterized in that: One end of the cylinder wall of the semi-protective cylinder (2011) is provided with a socket (204), and the other end of the cylinder wall of the semi-protective cylinder (2011) is provided with a plug (205), the socket (204) corresponds to the plug (205), and when the semi-protective cylinders (2011) are assembled to form a complete upper protective cylinder, the plug (205) of one semi-protective cylinder (2011) is tightly embedded in the socket (204) of the other semi-protective cylinder (2011).

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