Variable-diameter multi-spacing penstock ring rib externally-hung positioning device

Abstract

The utility model discloses a variable-diameter multi-interval penstock ring rib externally-hung positioning device, and belongs to the technical field of water conservancy and hydropower. Comprising a vertically-arranged frame body, and attaching assemblies matched with the pressure steel pipe are arranged at the upper end and the lower end of the inner side of the frame body; a ring rib tray with the adjustable position is detachably installed on the inner side of the frame body. According to the utility model, the integral assembly of the pressure steel pipe ring ribs with variable diameters, various wall thicknesses and different intervals is realized; a plurality of ring rib trays are arranged, and a plurality of ring ribs of a single section of pressure steel pipe can be assembled at a time, so that the working efficiency is improved; a replaceable arc-shaped base plate is additionally arranged on the working surface of the electromagnetic chuck, so that the electromagnetic adsorption force when the outer diameters of different pressure steel pipes are attached is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower, in particular to a variable-diameter and multi-spacing pressure steel pipe ring rib external hanging positioning device. Background Technique

[0002] The pumped-storage power station utilizes the height difference between the upper reservoir and the lower reservoir to store energy and generate electricity; among them, the water diversion system and the tail water system are provided with long-distance high-strength pressure steel pipes. The diameter of the pressure steel pipe is large at the top and small at the bottom, the wall thickness is thin at the top and thick at the bottom, and the material strength is small at the top and large at the bottom, with the characteristics of variable diameter, multiple wall thicknesses, and different material strengths. In order to enhance the stiffness of the pressure steel pipe and the stability of the flow-through state, stiffening rings, water-blocking rings, thrust rings, etc. are provided on the outer wall of the large-scale pressure steel pipe, all of which are a kind of annular reinforcing plate (commonly known as ring ribs).

[0003] The prior art is as follows:

[0004] ① Cut the steel plate into a ring by a numerical control cutting machine, or bend the straight strip plate into a ring by a plate bending machine;

[0005] ② Pre-assemble the segmented ring-shaped rib plates on the platform into a complete circle that conforms to the outer diameter of the pipe wall;

[0006] ③ According to the installation dimensions and spacing, draw the installation position lines of the ring ribs on the outer wall of the pressure steel pipe, hoist the ring rib segments to the outer wall of the pressure steel pipe, align them according to the position lines, and use a square to detect the perpendicularity with the pipe wall. After passing the inspection, fix them by spot welding with an electric welding machine;

[0007] ④ Move a suitable distance radially, align the position and perpendicularity again, and fix the unassembled ring ribs by spot welding again;

[0008] ⑤ When the gap between the inner circle of the ring rib and the outer diameter of the steel pipe is too large, a small gantry structure can be welded on the outer wall of the steel pipe, and a jack is used to press the ring rib tightly against the outer wall of the pressure steel pipe to eliminate the gap;

[0009] ⑥ Operate in sequence until the entire circle of ring ribs is assembled and fixed on the outer wall of the steel pipe to form a complete annular strengthening ring, and complete the assembly and spot welding of each ring rib on the pressure steel pipe. This is the so-called ring rib assembly process;

[0010] ⑦ Then transfer to the welding process, and weld the fillet welds on both sides of the steel pipe outer wall and the ring rib, as well as the butt welds of the ring ribs, etc.

[0011] Penstock can be divided into straight pipes, bend pipes, reduced-diameter pipes, bifurcation pipes, etc. according to their shapes. Straight pipes are used in the middle horizontal section, lower horizontal section and inclined shaft section of the water diversion system; bend pipes are used at the turning corners of the (upper, middle, lower) horizontal sections and the (upper, lower) inclined shaft sections; reduced-diameter pipes are used in the gradually changing section of the penstock diameter; bifurcation pipes are used at the diversion point from the main pipe in the lower horizontal section to the pump-turbine generator set. Among them, the number of straight pipes accounts for more than 95% of the total. The single-section length of a straight pipe is generally 3 meters. The arrangement position of the circumferential stiffeners is perpendicular to the axis of the penstock, and the number of circumferential stiffeners arranged is set according to the force loads during the installation and operation of the pipe section. According to different pipe diameters and the number of circumferential stiffeners set, the straight pipes are further divided into different typical pipe sections. For a single-section length of 3 meters, 2-4 circumferential ribs are arranged, which are composed of steel pipes with the same specification but different wall thicknesses and circumferential ribs.

[0012] Taking a certain pumped-storage power station in China as an example, the specific parameters of the typical pipe section, that is, the straight pipe section, are as follows in the table.

[0013]

[0014] It can be seen from the above table that the number of penstocks in the pumped-storage power station is huge, and high-strength steel materials are used for the penstocks and stiffening rings. High-strength steel materials have thermal sensitivity, and need to be preheated before welding and heat-insulated after welding. The existing assembly method is to lift the rib plates with a crane, and use manual assistance for alignment, positioning, inspection, and electric welding fixation, etc. For such a large number of circumferential stiffener installations, if the existing technology is used for construction, it will not only occupy a large amount of labor and cause construction delays; there are also problems such as not allowing random welding of seam pressing tools during the assembly process, which will cause unexpected difficulties or even be impossible to achieve; it is imperative to develop new assembly processes and methods. Content of the Utility Model

[0015] The purpose of the present utility model is to solve the problems of inconvenient operation and low efficiency in the construction of the circumferential stiffeners of penstocks in the prior art, and to propose an external hanging positioning device for circumferential stiffeners of penstocks with variable diameters and multiple spacings.

[0016] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0017] An external hanging positioning device for circumferential stiffeners of penstocks with variable diameters and multiple spacings, including a vertically arranged frame body, and attachment components adapted to the penstock are arranged at the upper and lower ends inside the frame body;

[0018] A circumferential stiffener tray with adjustable position is detachably installed inside the frame body.

[0019] In some embodiments, the frame body is composed of two parallel vertical beams and several connecting plates connecting the two vertical beams.

[0020] In some embodiments, the attachment component includes: an electromagnetic chuck, and an arc-shaped attachment plate detachably arranged at the front end of the electromagnetic chuck.

[0021] In some embodiments, the attachment assembly is installed by a pressing assembly;

[0022] The pressing assembly includes: a substrate fixed to the rear end of the frame body, an internally threaded drive cylinder rotatably fitted with the substrate, a lead screw fitted with the internally threaded drive cylinder, and a U-shaped joint connected to the inner end of the lead screw;

[0023] An opening ear plate is fixedly arranged at the rear end of the attachment assembly and is hinged to the U-shaped joint.

[0024] In some embodiments, it further includes: a positioning frame located at the front end of the frame body and corresponding to the upper and lower sides of the attachment assembly.

[0025] In some embodiments, the ring rib tray is installed through a plurality of positioning holes formed in the frame body.

[0026] In some embodiments, the ring rib tray includes: a rear end plate provided with positioning holes, and a support block fixed to the inner end of the rear end plate.

[0027] In some embodiments, the support block is a short plate, and one is provided on each side of the inner end of the rear end plate;

[0028] Or, the support block is a long plate, and one is provided at the inner end of the rear end plate.

[0029] In some embodiments, an arc-shaped pressing strip is arranged at the rear upper position above the support block.

[0030] In some embodiments, an upper pressing block is arranged at the middle position on the inner side of the rear end plate;

[0031] There is a height difference between the upper pressing block and the support block, forming a clamping space.

[0032] Compared with the prior art, the present utility model provides a variable-diameter and multi-spacing pressure steel pipe ring rib external hanging positioning device, which has the following beneficial effects.

[0033] 1. The present utility model realizes the integrated assembly of variable-diameter, various wall thicknesses, and different-spacing pressure steel pipe ring ribs.

[0034] 2. The present utility model is provided with a plurality of ring rib trays, and multiple ring ribs of a single-section pressure steel pipe can be assembled at one time, improving the operation efficiency; the working surface of the electromagnetic chuck is increased with replaceable arc-shaped pads, ensuring the electromagnetic adsorption force when fitting different outer diameters of pressure steel pipes.

[0035] Other advantages, objectives, and features of the present utility model will, to some extent, be elaborated in the subsequent description; and to some extent, will be obvious to those skilled in the art based on the examination and research of the following text; or, can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a front-side structural schematic diagram of the present utility model.

[0037] Figure 2 It is a rear-side structural schematic diagram of the present utility model.

[0038] Figure 3 It is a front-view structural schematic diagram of the present utility model.

[0039] Figure 4 It is a structural schematic diagram of the frame body.

[0040] Figure 5 It is a state schematic diagram of being matched with the vertical connecting plate.

[0041] Figure 6 It is a structural schematic diagram of the positioning frame.

[0042] Figure 7 It is an installation state schematic diagram of the attaching component.

[0043] Figure 8 It is a structural schematic diagram of the attaching component.

[0044] Figure 9 It is a top-view structural schematic diagram of the attaching component.

[0045] Figure 10 It is an exploded state schematic diagram of the attaching component.

[0046] Figure 11 It is an exploded state schematic diagram of the attaching component.

[0047] Figure 12 It is a structural schematic diagram of the internal-thread drive cylinder.

[0048] Figure 13 It is a structural schematic diagram of the ring-rib tray.

[0049] Figure 14 It is a bottom-side structural schematic diagram of the ring-rib tray.

[0050] Figure 15 It is a second structural schematic diagram of the ring-rib tray.

[0051] Figure 16 It is a usage state schematic diagram of the present utility model.

[0052] Figure 17This is a schematic structural diagram of the usage state of the present utility model.

[0053] In the figure:

[0054] 1. Frame body;

[0055] 11. Vertical beam; 12. Connecting plate;

[0056] 2. Attachment assembly;

[0057] 21. Electromagnetic chuck; 22. Arc-shaped attachment plate;

[0058] 3. Ring rib tray;

[0059] 31. Rear end plate; 32. Support block; 33. Arc-shaped pressing strip; 34. Upper pressing block;

[0060] 4. Pressing assembly;

[0061] 41. Substrate; 42. Inner-threaded drive cylinder; 43. Lead screw; 44. U-shaped joint; 45. Handwheel;

[0062] 5. Vertical connecting plate;

[0063] 6. Positioning frame. Detailed implementation manners

[0064] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0065] Referring to Figures 1-17 , a variable-diameter and multi-spacing pressure steel pipe ring rib external hanging positioning device includes a vertically arranged frame body 1, and attachment assemblies 2 adapted to the pressure steel pipe are arranged at the upper and lower ends inside the frame body 1; meanwhile, a ring rib tray 3 with adjustable position is detachably installed inside the frame body 1.

[0066] Correspondingly, the attachment assembly 2 provides an attachment pressure to fix the whole on the external force of the pressure steel pipe and forms a pressing pressure towards the ring rib; the ring rib tray 3 provides functions such as positioning, lifting, and internal pressure.

[0067] Among them, one attachment assembly 2 is arranged at each of the upper and lower ends inside the frame body 1 to ensure the balance and effectiveness of the force application; one or more ring rib trays 3 are detachably installed inside the frame body 1, and are specifically arranged according to the number and spacing of the required ring ribs.

[0068] Correspondingly, the ring rib tray 3 is installed through multiple groups of positioning holes opened in the frame body 1; multiple groups of positioning holes are preset to respectively adapt to different ring rib spacings.

[0069] Among them, the frame body 1 is composed of two parallel vertical beams 11 and several connecting plates 12 connecting the two vertical beams 11; preferably, the vertical beam 11 is a channel steel with an opening facing outward.

[0070] During processing and manufacturing, the main structure is composed of two 20# channel steels (vertical beams 11) back to back and connected by several rectangular steel plates (connecting plates 12) in the middle; several groups of ring bar tray 3 installation holes are arranged on the front limb surface of the channel steel (the corresponding surface to the outer wall of the penstock) for adjusting the spacing of the penstock ring bars.

[0071] In some embodiments, the attaching assembly 2 includes: an electromagnetic chuck 21 and an arc-shaped attaching plate 22 detachably arranged at the front end of the electromagnetic chuck 21.

[0072] During use, an adsorption force is generated through the electromagnetic chuck 21, and it is positioned on the outer wall of the penstock in cooperation with the arc-shaped attaching plate 22 to position and fix the whole, and apply an inward pressure to the ring bars.

[0073] Among them, a counterbore is opened on the inner end surface of the arc-shaped attaching plate 22 and is assembled and connected to the inner end surface of the electromagnetic chuck 21 through bolts; the arc-shaped attaching plate 22 is a rectangular thin plate with an arc-shaped surface in the front, and it has various specifications, and the arc radius is equal to the outer diameter of the corresponding penstock to respectively adapt to and fit the outer surfaces of penstocks with different diameters; during production, the corresponding arc-shaped attaching plates 22 are made respectively for the different outer diameters of various penstocks and are replaced and used during the operation process.

[0074] It should be noted that in order to ensure the adsorption force (not less than two tons) for ring bar seam pressing, it is best to be able to have arc contact; the preferred state is to make arc-shaped pads for standby according to different outer diameters of the penstock; there are relatively many specifications of the required arc-shaped attaching plates. It is determined through experiments that even when there is a gap between the arc surface and the outer wall of the penstock, it can still meet the ring bar seam pressing; thus, arc-shaped pads with the corresponding arc of the minimum wall thickness outer diameter can be made for penstocks with inner diameters of 3.4 meters, 4.8 meters, 5.6 meters, and 6.4 meters; the small arc is stuck on the surface of the large arc to ensure at least two lines of contact.

[0075] The electromagnetic chuck 21 is an externally purchased part, which generates magnetism by being powered on or off to adsorb or disengage from the outer wall of the penstock; to ensure effectiveness, the adsorption force generated by it is not less than two tons; the front end face of the electromagnetic chuck 21 is a cuboid, and threaded holes are correspondingly arranged on the installation surface of the arc-shaped attaching plate 22 for bolt fixation.

[0076] In some embodiments, the rear end of the attaching assembly 2 is connected to the front end of the pressing assembly 4, and the attaching assembly 2 is installed through the pressing assembly 4.

[0077] Specifically, the pressing assembly 4 includes:

[0078] The base plate 41 fixed to the rear end of the frame 1, the internally threaded drive cylinder 42 rotatably fitted with the base plate 41, the lead screw 43 fitted with the internally threaded drive cylinder 42, and the U-shaped joint 44 connected to the inner end of the lead screw 43.

[0079] Meanwhile, an opening ear plate is fixedly arranged at the rear end of the attaching assembly 2 and is hinged to the U-shaped joint 44 through a pin shaft; in addition, thrust bearings are respectively arranged at the inner and outer ends of the internally threaded drive cylinder 42 on the base plate 41, and a nut threadedly fitted with the internally threaded drive cylinder 42 is arranged at the front end of the inner thrust bearing.

[0080] Meanwhile, a hand wheel 45 is integrally arranged at the outer end of the internally threaded drive cylinder 42 for easy operation.

[0081] Among them, the lead screw 43 is a machined part, one end is connected to the U-shaped joint 44 by a fine thread and is fixed by passing through a pin shaft; the other end has a cube-shaped opening on the cylindrical surface, and the middle part has a trapezoidal thread for installing the internally threaded drive cylinder 42.

[0082] Meanwhile, the internally threaded drive cylinder 42 and the hand wheel 45 are integrally machined parts; the internally threaded drive cylinder 42 is a hollow stepped shaft with a small outer diameter at the inner end and a large outer diameter at the outer end, and the inner hole is a trapezoidal threaded hole consistent with the lead screw 43; the large end cylindrical surface is evenly distributed with cross-shaped small cylinders of appropriate length, and the small cylinders are connected by a circular ring to form the hand wheel 45 for manual rotation; the inner end of the internally threaded drive cylinder 42 is provided with a thread at the small head, and thrust bearings are arranged on both sides of the base plate 41 to realize the rotation adjustment and internal pressure of the hand wheel 45.

[0083] In some embodiments, it further includes: a positioning frame 6 located at the front end of the frame 1 and corresponding to the upper and lower sides of the attaching assembly 2; among them, the positioning frame 6 is composed of multiple channel steels and / or angle steels, which restricts the attaching assembly 2 to prevent it from moving up and down, and improves the overall load-bearing performance and reliability.

[0084] Preferably, each group of positioning frames 6 is composed of two 6.3# channel steels at the bottom and two 40×5mm angle steels at the top, and extends a suitable length towards the outer wall of the pressure steel pipe for load-bearing and limiting after the attaching assembly 2 is installed.

[0085] It should be noted that: it further includes an electrical control system to control the electromagnetic chuck; and a remote control function can be optionally configured to increase the convenience and safety during the operation process.

[0086] In some embodiments, the ring rib tray 3 includes: a rear end plate 31 provided with positioning holes, and a supporting block 32 fixed to the inner end of the rear end plate 31.

[0087] The rear end plate 31 is a rectangular plate and is the installation substrate of the entire ring rib tray 3. It is placed on the front side of the frame body 1 and is connected to the frame body 1 by bolts passing through the positioning holes. Preferably, in order to avoid the supporting block 32, the positioning holes are offset upward.

[0088] Among them, as Figure 13 shown, the supporting block 32 is a short plate, and one is provided on each side of the inner end of the rear end plate 31; or as Figure 15 shown, the supporting block 32 is a long plate, and one is provided at the inner end of the rear end plate 31.

[0089] Furthermore, a stiffening plate is provided below the supporting block 32.

[0090] It should be noted that when the supporting block 32 is set as a long plate, it can be selected that the lower end surface of the supporting block 32 is flush with the lower edge of the rear end plate 31, and no stiffening plate is provided.

[0091] Alternatively, the ring rib tray 3 can be divided into an upper tray and a lower tray; the upper tray adopts the form of two short plate supporting blocks, and the lower tray adopts the form of one long plate supporting block; the lower tray is selected to be installed at the lowest position.

[0092] Preferably, the front end surface of the supporting block 32 is an arc surface; and, the radius of the front arc surface of the supporting block 32 is greater than the outer diameter of the pressure steel pipe to be installed (preferably, the radius of the front arc surface of the supporting block 32 is 10 - 50 mm greater than the inner diameter when the inner diameter of the pressure steel pipe with the same inner diameter has the minimum wall thickness), so that while serving as the ring rib support plate of the pressure steel pipe, it does not contact the outer wall of the pressure steel pipe and does not affect the internal pressure operation.

[0093] At the same time, an arc-shaped pressing strip 33 is provided at the rear end position above the supporting block 32 to fit the ring rib and provide an inward pressure to it; correspondingly, the front end surface of the arc-shaped pressing strip 33 is an arc surface; preferably, its thickness is greater than the thickness of the ring rib, such as slightly larger by 2 - 5 mm.

[0094] It should be noted that the front end surface of the arc-shaped pressing strip 33 does not need to be completely fitted with the ring rib; preferably, the radius of its front arc surface is equal to the minimum outer diameter of the ring rib with the same inner diameter and different wall thicknesses to be installed, so that it can have at least two contact points with the ring rib of this inner diameter and wall thickness, and bear the pressure seam of the pressure steel pipe ring rib.

[0095] In addition, an upper pressing block 34 is provided at the middle position inside the rear end plate 31.

[0096] There is a height difference between the upper pressing block 34 and the supporting block 32, forming an annular clamping space; for the loading and positioning of the ring rib, in order to facilitate the insertion of the ring rib, necessary arc angles are provided at the lower side of the front end of the upper pressing block 34 and other positions.

[0097] It should be noted that the height difference should be greater than the height of the circumferential rib under normal circumstances so that the circumferential rib can enter it; for example, when the height of the circumferential rib is 20 mm, the height difference is set to 22 - 25 mm.

[0098] Furthermore, as Figure 13 、 15 shown; a stiffening plate is arranged above the upper pressing block 34.

[0099] The usage method of this device is as follows.

[0100] 1. Preparation work.

[0101] After the longitudinal seam welding of the penstock is completed, it is hoisted and placed on the assembly platform, and the axis of the steel pipe is placed vertically; by using the roundness support frame arranged inside the steel pipe, the diameter difference in the crosshair direction of the detected pipe diameter and the roundness at both ends are adjusted to meet the specification requirements, and the perpendicularity of the outer wall of the steel pipe is detected in the crosshair direction by a total station or a level and a theodolite to meet the specification requirements; the preheating device is arranged inside the steel pipe, and the preheating temperature for the tack welding of 600 Mpa high-strength steel is generally 80 ± 10 °C; the preheating temperature for the tack welding of 800 Mpa high-strength steel is 120 ± 10 °C, and the specific value is provided by the material supplier and determined through tests, and no welding cracks are allowed to occur.

[0102] 2. Install and adjust the components of this device according to the corresponding specifications.

[0103] Align the positioning holes of the circumferential rib tray 3 with the hole positions at the corresponding intervals on the front foot surface of the double-channel steel of the hanging bracket, and install the circumferential rib tray 3 with bolts, washers and nuts; install or replace the front surface of the electromagnetic chuck 21 with an arc-shaped attaching plate 22 with the corresponding radius, and fasten it with countersunk head screws without allowing any gaps; move the whole to a suitable position outside the penstock through forms such as setting a top suspension component above or a moving support component below.

[0104] 3. Circumferential rib assembly operation.

[0105] ① Rotate the upper handwheel to move the arc-shaped attaching plate to fit the outer wall of the steel pipe;

[0106] ② Check the distance from the upper circumferential rib tray to the pipe wall to ensure it is within the range of 20 - 50 mm, and adjust with gaskets if necessary;

[0107] ③ Then rotate the lower handwheel to move the arc-shaped attaching plate to fit the outer wall of the steel pipe, and lock the position when the distance from the lower circumferential rib tray to the pipe wall is equal to the distance from the upper circumferential rib tray to the pipe wall;

[0108] ④ Operate the electrical control system, turn on the switch of the electromagnetic chuck, and adsorb the attaching component on the outer wall of the penstock to ensure it is firm and correct;

[0109] ⑤ First, hoist the lowest ring reinforcement segment; manually assist in inserting it into the clamping space above the tray, and successively hoist the upper-layer ring reinforcement segments from bottom to top, and also insert them into the clamping space above the tray;

[0110] ⑥ Two operators cooperate to simultaneously and in the same direction rotate the upper and lower handwheels to synchronously move the ring reinforcement tray towards the pipe wall side; stop when the handwheels feel resistance; check the distance from the hanging channel steel to the outer wall of the steel pipe to make the upper and lower end spacings consistent; check the clearance between the inner diameter of the ring reinforcement and the outer wall of the steel pipe. When the clearance is greater than 3 mm, operate the handwheels simultaneously again to press tightly until the requirements are met;

[0111] ⑦ The position and spacing of the ring reinforcement have been set; after the preheating temperature of the welding part is qualified by the infrared thermometer, the welder cooperates to spot-weld and fix the upper and lower surfaces of one end of the positioned ring reinforcement to the outer wall of the steel pipe;

[0112] ⑧ After completion, synchronously operate the upper and lower handwheels to move the upper pressing block of the ring reinforcement tray 10 - 20 mm away from the top surface of the ring reinforcement; operate the electrical control system to release the magnetic force of the electromagnetic chuck; move the ring reinforcement assembly device forward 500 - 1000 mm through forms such as the top suspension assembly set above or the mobile support assembly set below, and then perform the ring reinforcement seam pressing at this point;

[0113] ⑨ Operate the content of step ⑥ for ring reinforcement seam pressing. After completion, repeat the content of step ⑦ for ring reinforcement spot welding. After completion, repeat step ⑧ to disengage the ring reinforcement assembly device, move forward 500 - 1000 mm again, and successively cycle through the steps of "⑥ + ⑦ + ⑧" to complete the assembly, spot welding, and positioning of the ring reinforcement for this section;

[0114] ⑩ Move the ring reinforcement assembly device to the joint of the ring reinforcement of the penstock, insert another ring reinforcement segment again, and repeat the above steps until the assembly and fixation of the ring reinforcement for the entire section of the penstock are completed, and then transfer to the ring reinforcement welding process for welding operations.

[0115] It should be noted that: the positions of the joints of the two ring reinforcements and the longitudinal seam of the penstock need to be staggered by a specified distance, and the relevant specifications should be followed.

[0116] This device is used under the condition of the local preheating temperature of the ring reinforcement position of the penstock; it can meet the assembly of ring reinforcements with different diameters and different spacings after simple adjustment; it realizes the assembly of the entire circle of ring reinforcement segments through movement; it has the function of automatically aligning the ring reinforcement assembly position and does not require the process of scribing and alignment; it has the ability of automatic seam pressing and can effectively eliminate the clearance when there is a clearance between the ring reinforcement and the outer diameter of the pipe wall; its structure is simple, the operation is convenient, it improves the product quality and saves the process time, and it has high efficiency and safety.

[0117] This device realizes the integrated assembly of penstocks with variable diameters, multiple wall thicknesses, and different-spacing ring stiffeners, and has at least the following uses and effects: The simultaneous assembly of multiple ring stiffeners improves efficiency; the device is provided with multiple ring-stiffener trays, and multiple ring stiffeners of a single-section penstock can be assembled at one time, improving the operation efficiency; the same electromagnetic chuck meets the adsorption force requirements for different penstock outer diameters; by adding replaceable arc-shaped pads to the working surface of the cuboid electromagnetic chuck, the electromagnetic adsorption force when fitting different penstock outer diameters is ensured.

[0118] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

[0119] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0120] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present invention.

Claims

1. A variable diameter and multi-spacing pressure steel pipe ring reinforcement external positioning device, characterized in that: It comprises a vertically arranged frame (1), wherein the upper and lower ends of the inner side of the frame (1) are provided with attachment components (2) adapted to the pressure steel pipe; A ring-rib tray (3) with adjustable position is detachably mounted on the inner side of the frame (1).

2. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: The frame (1) is composed of two vertical beams (11) arranged in parallel, and a plurality of connecting plates (12) connecting the two vertical beams (11).

3. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: The attachment assembly (2) comprises an electromagnetic suction cup (21) and a curved attachment plate (22) detachably arranged at the front end of the electromagnetic suction cup (21).

4. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: The attachment component (2) is installed via a pressing component (4); The clamping assembly (4) comprises: a base plate (41) fixed to the rear end of the frame (1), an internally threaded driving cylinder (42) rotatably matched with the base plate (41), a screw rod (43) matched with the internally threaded driving cylinder (42), and a U-shaped joint (44) connected to the inner end of the screw rod (43); A perforated ear plate is fixedly provided at the rear end of the attachment component (2) and is hingedly connected to a U-shaped joint (44).

5. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: Also includes: A positioning frame (6) is located at the front end of the frame (1) and corresponds to the upper and lower parts of the attachment component (2).

6. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: The ring-ribbed tray (3) is installed via a plurality of groups of positioning holes provided on the frame (1).

7. The variable diameter and multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 1 is characterized in that: The ring-rib tray (3) comprises: a rear end plate (31) provided with a positioning hole, and a support block (32) fixed to the inner end of the rear end plate (31).

8. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 7 is characterized in that: The support block (32) is a short plate, one of which is disposed on each side of the inner end of the rear end plate (31); Alternatively, the support block (32) is a long plate, and one support block is provided at the inner end of the rear end plate (31).

9. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 7 is characterized in that: An arc-shaped pressure strip (33) is provided at the upper rear end of the support block (32).

10. The variable diameter multi-spacing pressure steel pipe ring reinforcement external hanging positioning device according to claim 7, characterized in that: An upper pressing block (34) is provided at the middle position of the inner side of the rear end plate (31); There is a height difference between the upper pressing block (34) and the supporting block (32), forming a clamping space.

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