A new type of adjustable jig frame tool for efficient construction of ship curved surface segments

Abstract

The present application relates to the technical field of ship sectional manufacturing, and discloses a novel adjustable jig frame tool for efficient construction of ship curved surface sections, which comprises a base pipe, a support pipe assembly is inserted and connected to the inner side of the base pipe, and an extension pipe assembly is sleeved and connected to the outer side of the top end of the support pipe assembly. The novel adjustable jig frame tool for efficient construction of ship curved surface sections adopts a two-stage telescopic structure composed of the base pipe, the support pipe and the extension pipe, and realizes coarse and fine adjustment in combination with the top end adjusting screw, so that the support height covers a wide range and can adapt to the construction requirements of curved surface sections of different specifications. The top end of the screw is hemispherical, can be self-adapted to the curved surface, guarantees the positioning accuracy, the trapezoidal thread has high bearing capacity and self-locking property, the constant force buffer assemblies on both sides of the base pipe offset part of the dead weight, the guide rails and guide strips ensure stable lifting without deflection and jamming, the two-stage limiting assemblies limit the maximum stroke of the support pipe and the extension pipe respectively, prevent the components from falling out, and the overall design is reasonable and practical.

Description

Technical Field

[0001] This invention relates to the field of ship section manufacturing technology, specifically a novel flexible jig tooling for the efficient construction of curved sections of ships. Background Technology

[0002] The jig is an indispensable specialized process equipment in the hull section construction phase. It is custom-made strictly according to the theoretical lines and structural characteristics of the corresponding hull sections. It is mainly used to support the outer plating and internal components of the hull sections, constraining the shape of the sections throughout the assembly and welding process. It ensures that the outline, smoothness of the lines, and geometric dimensions of the sections meet the design accuracy requirements. Its design benchmark comes from the hull line drawing and the three-dimensional digital model of the section. The curved shape of the working surface is completely matched with the theoretical line of the outer plating of the corresponding section. For sections with complex curvature such as the bow, stern, and side curved surfaces, multiple sets of templates are arranged at set intervals to fit a precise spatial curved surface. For sections with flat decks and bulkheads, a plane benchmark is used to provide stable support. The design process also takes into account the weight distribution of the sections, the trend of welding deformation, the operating space of the workers, and the hoisting requirements. The structural form is optimized while ensuring structural rigidity, and the reliability of support and the convenience of construction are taken into account. According to the construction posture of the sections, they can be divided into three categories: forward construction, reverse construction, and side construction, which are adapted to hull sections with different characteristics and construction requirements.

[0003] Currently, there are generally two types of commonly used jigs. One type is a fixed jig constructed using angle steel, which is dedicated to one section. This type has problems such as high material consumption, long erection period, and high labor intensity. Moreover, once the height is determined, it cannot be adjusted. The other type is a conventional flexible jig, which can be reused by adjusting the height according to the section line shape. However, the adjustment process often requires multiple people to cooperate, which is difficult to adjust, inefficient, has a small adjustable range, and is inconvenient to repair and maintain. Therefore, we propose a new type of flexible jig tooling for the efficient construction of curved sections of ships. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a novel flexible jig tooling for the efficient construction of curved sections of ships, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted in this invention is: a novel flexible jig tooling for efficient construction of curved sections of ships, including a base tube, a support tube assembly inserted into the inner side of the base tube, an extension tube assembly sleeved on the outer side of the top of the support tube assembly, a lower locking pin between the base tube and the support tube assembly, an upper locking pin between the support tube assembly and the extension tube assembly, a support tube limiting assembly between the base tube and the support tube assembly, an extension tube limiting assembly between the extension tube assembly and the support tube assembly, constant force buffer assemblies symmetrically installed on both sides of the base tube, a base elbow plate welded in a "+" shape on the outer side of the lower part of the base tube, and multiple base tube pin holes arranged at equal intervals on the outer side of the base tube; The support tube assembly includes a support tube body, a support tube top plate welded to the top of the support tube body, a support tube nut welded to the top of the support tube top plate, and a support tube adjusting screw threaded to the outer side of the top of the support tube nut. The extension tube assembly includes an extension tube body, an extension tube top plate welded to the top of the extension tube body, an extension tube nut welded to the top of the extension tube top plate, and an extension tube adjusting screw threaded onto the outer side of the top of the extension tube nut.

[0006] Preferably, the outer side of the support tube body is provided with support tube pin holes arranged at equal intervals, and the bottom of the support tube body is provided with hook plate locking grooves on both sides.

[0007] Through the above technical solution, the support tube pin hole can provide a space for the lower locking pin to be inserted for the height adjustment of the support tube body, and can realize multi-level adjustment of the multi-level support tube assembly and the base tube. The hook plate snap-fit ​​groove can provide snap-fit ​​installation for the spring hook plate. At the same time, when the support tube assembly is adjusted to the lowest position, the spring hook plate will not be damaged by collision, thus ensuring the connection stability between the constant force buffer assembly and the support tube body.

[0008] Preferably, the base tube pin hole and the support tube pin hole have the same diameter, the lower locking pin passes through the base tube pin hole and extends into the support tube pin hole, the lower part of the support tube body is inserted into the base tube, and the outer diameter surface of the support tube body and the inner diameter surface of the base tube do not contact each other.

[0009] Through the above technical solution, the base tube pin hole and the support tube pin hole of the same diameter can ensure that the lower locking pin can be smoothly inserted and completed for positioning and locking, and can achieve rapid adjustment.

[0010] Preferably, a handle is fixedly installed on the outer side of the extension tube body, and extension tube insertion holes are opened on the outer side of the extension tube body at equal intervals.

[0011] Through the above technical solution, the handle can provide the operator with a gripping and force-applying part, making it convenient for the operator to lift or lower the extension tube assembly to complete the height adjustment operation, and the extension tube pin hole can realize the multi-level height adjustment of the extension tube assembly.

[0012] Preferably, the extension tube pin hole and the support tube pin hole have the same diameter, the upper locking pin passes through the extension tube pin hole and extends into the support tube pin hole, the extension tube body is sleeved on the outer side of the top end of the support tube body, and the inner diameter surface of the extension tube body and the outer diameter surface of the support tube body do not contact each other.

[0013] Through the above technical solution, the extension tube pin hole and the support tube pin hole of the same diameter can ensure that the upper locking pin can be smoothly inserted and completed for positioning and locking. The extension tube body and the support tube body adopt a sleeve-type fit in which the inner diameter surface and the outer diameter surface do not contact each other, which can reduce the frictional resistance during the lifting and lowering adjustment of the extension tube assembly. The upper locking pin can fix the relative position of the extension tube assembly and the support tube assembly, and can also realize the height adjustment of the extension tube assembly and the support tube assembly. The ends of the lower locking pin and the upper locking pin are provided with cotter pins with a snap-fit ​​design.

[0014] Preferably, the support tube limiting assembly includes a support tube limiting plate, which is inserted and installed along the edge of the top end of the base tube. The support tube limiting plate and the base tube are detachably connected by an auxiliary mounting bolt. Support tube anti-loosening bolts are threaded on both sides of the bottom end of the support tube body, and the support tube anti-loosening bolts are in contact with the support tube limiting plate. The extension tube limiting assembly includes an extension tube limiting plate, which is inserted and installed along the edge of the bottom end of the extension tube body. The extension tube limiting plate and the extension tube body are detachably connected by auxiliary mounting bolts. Extension tube anti-detachment bolts are threaded on both sides of the top end of the support tube body, and the extension tube anti-detachment bolts are in contact with the extension tube limiting plate.

[0015] Through the above technical solution, the support tube limiting plate in the support tube limiting assembly can form an abutting fit with the support tube anti-loosening bolt, restricting the upward movement of the support tube body and preventing the support tube assembly from coming out of the base tube. The extension tube limiting plate in the extension tube limiting assembly can form an abutting fit with the extension tube anti-loosening bolt, restricting the upward movement of the extension tube body and preventing the extension tube assembly from coming out of the support tube assembly. Furthermore, the support tube limiting plate and the extension tube limiting plate are detachably connected by auxiliary mounting bolt one and auxiliary mounting bolt two, respectively, which facilitates disassembly, assembly, and maintenance.

[0016] Preferably, the cross-sections of the support tube limiting plate and the extension tube limiting plate are both in the shape of an "η" shape. Two identical support tube limiting components and extension tube limiting components are provided, and the two support tube limiting components and extension tube limiting components are symmetrically distributed about the vertical axis of the support tube body.

[0017] Through the above technical solution, the support tube limiting plate and the extension tube limiting plate with the "η" shaped cross section can be stably locked at the top of the base tube and the bottom of the extension tube body, and the longer end can extend into the interior of the base tube and the extension tube body. The two sets of support tube limiting components and extension tube limiting components symmetrically distributed can make the limiting force evenly distributed, avoiding jamming caused by unilateral force.

[0018] Preferably, the constant force buffer assembly includes a spring box, which is fixedly installed on both sides of the base tube. The connection between the base tube and the spring box is designed with an opening. A cover plate is provided on the outside of the spring box. The spring box and the cover plate are detachably connected by a cover plate locking bolt. A spring positioning bolt is provided on the inside of the spring box. A constant force spring is provided inside the spring box outside the spring positioning bolt. A spring hook plate is provided on the outside of the constant force spring. The spring hook plate is hooked into the inside of the hook plate locking groove. A hook plate locking bolt and a hook plate locking nut are provided between the spring hook plate and the support tube body. The hook plate locking bolt passes through the support tube body and the spring hook plate. The hook plate locking nut and the spring hook plate are in abutting connection.

[0019] Through the above technical solution, the constant force spring can provide a constant buffer tension to offset part of the self-weight of the support tube assembly, reduce the operating force when the operator adjusts the height of the support tube assembly, improve the efficiency of height adjustment, and realize convenient multi-level adjustment in the height direction. The cover plate is detachably connected to the spring box through the cover plate locking bolt, which facilitates the inspection and replacement of the constant force spring inside the spring box. The spring positioning bolt can limit the position of the constant force spring and prevent the constant force spring from shifting position during operation.

[0020] Preferably, two identical constant force buffer components are provided, symmetrically distributed on both sides of the base tube, and the constant force spring and spring hook plate are symmetrically distributed on both sides of the support tube. Through the above technical solution, the two symmetrically distributed constant force buffer components can apply symmetrical buffering force to the support tube body, so that the support tube components are subjected to balanced force during the lifting process, avoiding tilting and jamming caused by unilateral force, and improving the stability and smoothness of the height adjustment process.

[0021] Preferably, guide rails are fixedly installed on both sides inside the base tube, and guide bars are fixedly installed on both sides outside the support tube body, with the guide bars and guide rails being slidably connected.

[0022] Through the above technical solution, the sliding fit structure of the guide rail and guide bar can provide guidance for the lifting and lowering movement of the support tube assembly, and limit the circumferential rotation and radial offset of the support tube body.

[0023] Preferably, the vertical axes of the base tube, the support tube, and the extension tube are located on the same vertical line. The top ends of the support tube adjusting screw and the extension tube adjusting screw adopt a hemispherical structure. The threads of the support tube adjusting screw and the extension tube adjusting screw adopt trapezoidal threads. Drainage grooves are provided at the bottom ends of the base tube and the base elbow plate. The bottom end of the base tube adopts an open design.

[0024] Through the above technical solutions, the vertical axes of the base tube, support tube, and extension tube are collinear, which ensures that the load of the overall support structure is transmitted in the vertical direction, avoiding structural deformation caused by eccentric loading. The hemispherical adjustment screws of the support tube and extension tube can better fit the curved surface of the ship's curved sections, improving the support fit. The trapezoidal thread can improve the load-bearing capacity and self-locking performance of the adjustment screws. The drainage grooves at the bottom of the base tube and the base elbow plate, combined with the bottom opening design of the base tube, can drain the rainwater and debris accumulated in the tube, preventing water accumulation and corrosion of parts. It also facilitates cleaning of the debris inside the base tube and extends the overall service life of the tooling.

[0025] Compared with the prior art, the present invention provides a novel flexible jig tooling for the efficient construction of curved sections of ships, which has the following beneficial effects: 1. This novel flexible jig tooling for the efficient construction of curved sections of ships utilizes a design that integrates base tubes and support tubes, as well as support tubes and extension tubes. The base tubes and support tubes are connected in an insert-fitting configuration to form a primary telescopic structure, while the support tubes and extension tubes are fitted together to form a secondary telescopic structure. This allows for height adjustment of the jig tooling according to actual conditions, and the length of the extension tubes can also be customized. The adjusting screws at the top of both the support tubes and extension tubes allow for fine-tuning, combining coarse and fine-tuning adjustments. It can cover a wider range of support heights and adapt to the construction needs of curved sections of ships of different specifications. The top of the support tube adjusting screw and the extension tube adjusting screw adopts a hemispherical structure, which can adaptively fit the curved shape of the ship's curved section, improve the fit of the support point, and ensure the construction positioning accuracy of the ship's curved section. The threads of the support tube adjusting screw and the extension tube adjusting screw are both trapezoidal threads. The trapezoidal thread structure has both high load-bearing capacity and good self-locking performance, which can prevent the adjusting screw from rotating and displacing on its own when the tooling is under load, and ensure the stability of the support height. 2. This new type of flexible jig tooling for efficient construction of curved sections of ships features constant force buffer components symmetrically installed on both sides of the base tube. Constant force is provided by constant force springs inside the spring box. The elastic force is transmitted to the support tube body through the spring hook plate, applying an upward auxiliary force to the support tube assembly to offset part of its own weight. This effectively reduces the operating effort required by the operator when adjusting the height of the support tube assembly and improves the efficiency of height adjustment. The guide rails fixedly installed on both sides inside the base tube form a sliding fit with the guide bars fixedly installed on both sides outside the support tube body, ensuring that the support tube assembly always rises and falls smoothly in the vertical direction, avoiding problems such as skewness and jamming during the adjustment process. 3. This new type of flexible jig tooling for efficient construction of curved sections of ships features a support pipe limiting assembly with a support pipe limiting plate fixedly installed at the top of the base pipe. When the support pipe assembly rises to its maximum stroke, the support pipe limiting plate abuts against the support pipe anti-detachment bolt at the bottom of the support pipe body, preventing the support pipe assembly from moving further upward and thus preventing it from detaching from the base pipe. Similarly, the extension pipe limiting assembly with an extension pipe limiting plate fixedly installed at the bottom of the extension pipe body, also abuts against the extension pipe anti-detachment bolt at the top of the support pipe body when the extension pipe assembly rises to its maximum stroke, preventing it from moving further upward and thus preventing it from detaching from the support pipe assembly. The overall design is reasonable and easy to use. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the installation structure of the base tube and support tube assembly of the present invention; Figure 3 This is a schematic diagram of the half-section structure of the present invention; Figure 4 This is a schematic diagram of the vertical cross-sectional structure of the base tube of the present invention; Figure 5 This is a schematic diagram of the installation structure of the constant force buffer assembly of the present invention; Figure 6 This is a schematic diagram of the constant force spring mounting structure of the present invention; Figure 7 This is a schematic diagram of the installation structure of the support tube assembly and the constant force buffer assembly of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the installation structure of the support tube limiting component of the present invention; Figure 9 This is a schematic diagram of the installation structure of the support tube assembly and the constant force buffer assembly of the present invention. Figure 2 .

[0027] The components include: 1. Base tube; 2. Support tube assembly; 201. Support tube body; 202. Support tube top plate; 203. Support tube nut; 204. Support tube adjusting screw; 205. Support tube pin hole; 206. Hook plate locking groove; 3. Extension tube assembly; 301. Extension tube body; 302. Extension tube top plate; 303. Extension tube nut; 304. Extension tube adjusting screw; 305. Handle; 306. Extension tube pin hole; 4. Base tube pin hole; 5. Lower locking pin; 6. Upper locking pin; 7. Base elbow plate; 8. Support tube limiting assembly; 8 01. Support tube limiting plate; 802. Auxiliary installation bolt one; 803. Support tube anti-detachment bolt; 9. Extension tube limiting assembly; 901. Extension tube limiting plate; 902. Auxiliary installation bolt two; 903. Extension tube anti-detachment bolt; 10. Constant force buffer assembly; 1001. Spring box; 1002. Cover plate; 1003. Cover plate locking bolt; 1004. Spring positioning bolt; 1005. Constant force spring; 1006. Spring hook plate; 1007. Hook plate locking bolt; 1008. Hook plate locking nut; 11. Guide bar; 12. Guide rail; 13. Drainage groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: As Figure 1 - Figure 9 As shown, the present invention provides a novel flexible jig tooling for efficient construction of curved sections of ships, including a base tube 1, a support tube assembly 2 inserted into the inner side of the base tube 1, an extension tube assembly 3 sleeved on the outer side of the top of the support tube assembly 2, a lower locking pin 5 between the base tube 1 and the support tube assembly 2, an upper locking pin 6 between the support tube assembly 2 and the extension tube assembly 3, a support tube limiting assembly 8 between the base tube 1 and the support tube assembly 2, an extension tube limiting assembly 9 between the extension tube assembly 3 and the support tube assembly 2, constant force buffer assemblies 10 symmetrically installed on both sides of the base tube 1, a base elbow plate 7 welded in a "+" shape on the outer side of the lower part of the base tube 1, and multiple base tube pin holes 4 arranged at equal intervals on the outer side of the base tube 1. The support pipe assembly 2 includes a support pipe body 201, a support pipe top plate 202 welded to the top of the support pipe body 201, a support pipe nut 203 welded to the top of the support pipe top plate 202, and a support pipe adjusting screw 204 threaded on the outer side of the top of the support pipe nut 203. The extension tube assembly 3 includes an extension tube body 301, an extension tube top plate 302 is welded and installed at the top end of the extension tube body 301, an extension tube nut 303 is welded and installed at the top end of the extension tube top plate 302, and an extension tube adjusting screw 304 is installed on the outer thread of the top end of the extension tube nut 303.

[0030] Example 2: like Figure 2 - Figure 9 As shown, this is an improvement on the previous embodiment.

[0031] Specifically, guide rails 12 are fixedly installed on both sides inside the base tube 1, and guide bars 11 are fixedly installed on both sides outside the support tube body 201. The guide bars 11 and the guide rails 12 are slidably connected. The advantage is that the sliding fit structure between the guide rails 12 and the guide bars 11 can provide guidance for the lifting and lowering movement of the support tube assembly 2, and limit the circumferential rotation and radial offset of the support tube body 201.

[0032] Specifically, the outer side of the support tube body 201 is provided with support tube pin holes 205 arranged at equal intervals, and the bottom of the support tube body 201 is provided with hook plate locking grooves 206 on both sides. The advantage is that the support tube pin holes 205 can provide space for the insertion of the lower locking pin 5 for the height adjustment of the support tube body 201, and can realize multi-level adjustment of the multi-level support tube assembly 2 and the base tube 1. The hook plate locking grooves 206 can provide locking installation for the spring hook plate 1006. At the same time, when the support tube assembly 2 is adjusted to the lowest position, the spring hook plate 1006 will not be damaged by collision, ensuring the connection stability between the constant force buffer assembly 10 and the support tube body 201.

[0033] Specifically, the base tube pin hole 4 and the support tube pin hole 205 have the same diameter. The lower locking pin 5 passes through the base tube pin hole 4 and extends into the support tube pin hole 205. The lower part of the support tube body 201 is inserted into the base tube 1, and the outer diameter surface of the support tube body 201 does not contact the inner diameter surface of the base tube 1. The advantage is that the base tube pin hole 4 and the support tube pin hole 205 with the same diameter can ensure that the lower locking pin 5 can be smoothly inserted and positioned and locked, and can achieve rapid adjustment.

[0034] Specifically, a handle 305 is fixedly installed on the outer side of the extension tube body 301, and extension tube pin holes 306 arranged at equal intervals are opened on the outer side of the extension tube body 301. The advantage is that the handle 305 provides the operator with a gripping point for applying force, making it convenient for the operator to lift or lower the extension tube assembly 3 to complete the height adjustment operation, and the extension tube pin holes 306 can realize multi-level height adjustment of the extension tube assembly 3.

[0035] Specifically, the extension tube pin hole 306 and the support tube pin hole 205 have the same diameter. The upper locking pin 6 passes through the extension tube pin hole 306 and extends into the support tube pin hole 205. The extension tube body 301 is sleeved on the outer side of the top end of the support tube body 201, and the inner diameter surface of the extension tube body 301 does not contact the outer diameter surface of the support tube body 201. The advantages are that the identical diameter of the extension tube pin hole 306 and the support tube pin hole 205 ensures that the upper locking pin 6 can smoothly penetrate and complete the positioning and locking. The sleeved fit between the extension tube body 301 and the support tube body 201, with the inner and outer diameter surfaces not contacting each other, reduces frictional resistance during the lifting and lowering adjustment of the extension tube assembly 3. The upper locking pin 6 can fix the relative position of the extension tube assembly 3 and the support tube assembly 2, and also realize the height adjustment of the extension tube assembly 3 and the support tube assembly 2.

[0036] Specifically, the vertical axes of the base tube 1, the support tube body 201, and the extension tube body 301 are located on the same vertical line. The tops of the support tube adjusting screw 204 and the extension tube adjusting screw 304 adopt a hemispherical structure. The threads of the support tube adjusting screw 204 and the extension tube adjusting screw 304 adopt a trapezoidal thread. Drainage grooves 13 are provided at the bottom ends of the base tube 1 and the base elbow plate 7. The bottom end of the base tube 1 adopts an open design. The advantages are that the vertical axes of the base tube 1, the support tube body 201, and the extension tube body 301 are collinear, which can ensure that the load of the overall support structure is transmitted in the vertical direction and avoid structural deformation caused by eccentric loading. The hemispherical support tube adjusting screw 204 and the extension tube adjusting screw 304 can better fit the curved surface of the ship's curved surface segment, improving the support fit. The trapezoidal thread setting can improve the load-bearing capacity and self-locking performance of the adjusting screw. The drainage groove 13 at the bottom of the base tube 1 and the base elbow plate 7, together with the bottom opening design of the base tube 1, can drain the rainwater and debris accumulated in the pipe, prevent water accumulation in the pipe from corroding the parts, and also facilitate the cleaning of the garbage inside the base tube 1, which can also extend the overall service life of the tooling.

[0037] Example 3: like Figure 2 - Figure 9 As shown, this is an improvement on the previous embodiment.

[0038] Specifically, the support tube limiting assembly 8 includes a support tube limiting plate 801, which is inserted and installed on the edge of the top end of the base tube 1. The support tube limiting plate 801 and the base tube 1 are detachably connected by an auxiliary mounting bolt 802. Support tube anti-loosening bolts 803 are threaded on both sides of the bottom end of the support tube body 201, and the support tube anti-loosening bolts 803 and the support tube limiting plate 801 are in abutting connection. The extension tube limiting assembly 9 includes an extension tube limiting plate 901, which is inserted and installed along the edge of the bottom end of the extension tube body 301. The extension tube limiting plate 901 and the extension tube body 301 are detachably connected by auxiliary mounting bolts 902. Extension tube anti-detachment bolts 903 are threaded on both sides of the top end of the support tube body 201, and the extension tube anti-detachment bolts 903 and the extension tube limiting plate 901 are in abutting connection. The advantages are that the support tube limiting plate 801 in the support tube limiting assembly 8 can form an abutting engagement with the support tube anti-loosening bolt 803, limiting the upward movement of the support tube body 201 and preventing the support tube assembly 2 from coming out of the base tube 1. The extension tube limiting plate 901 in the extension tube limiting assembly 9 can form an abutting engagement with the extension tube anti-loosening bolt 903, limiting the upward movement of the extension tube body 301 and preventing the extension tube assembly 3 from coming out of the support tube assembly 2. Furthermore, the support tube limiting plate 801 and the extension tube limiting plate 901 are detachably connected by auxiliary mounting bolt 1 802 and auxiliary mounting bolt 2 902, respectively, which facilitates disassembly, assembly, and maintenance.

[0039] Specifically, both the support tube limiting plate 801 and the extension tube limiting plate 901 have an "η"-shaped cross-section. Two identical support tube limiting components 8 and 9 are provided, symmetrically distributed about the vertical axis of the support tube body 201. The advantage is that the "η"-shaped support tube limiting plate 801 and extension tube limiting plate 901 can be stably engaged at the top of the base tube 1 and the bottom of the extension tube body 301, with the longer end extending into the base tube 1 and extension tube body 301. The symmetrically distributed two sets of support tube limiting components 8 and 9 ensure even distribution of the limiting force, preventing jamming caused by unilateral force.

[0040] Example 4: like Figure 2 - Figure 9 As shown, this is an improvement on the previous embodiment.

[0041] Specifically, the constant force buffer assembly 10 includes a spring box 1001, which is fixedly installed on both sides of the base tube 1. The connection between the base tube 1 and the spring box 1001 adopts an open design. A cover plate 1002 is provided on the outside of the spring box 1001. The spring box 1001 and the cover plate 1002 are detachably connected by a cover plate locking bolt 1003. A spring positioning bolt 1004 is provided on the inside of the spring box 1001. The inside of the spring box 1001 is located outside the spring positioning bolt 1004. A constant force spring 1005 is provided on the side, and a spring hook plate 1006 is provided on the outer side of the constant force spring 1005. The spring hook plate 1006 is hooked into the inner side of the hook plate locking groove 206. A hook plate locking bolt 1007 and a hook plate locking nut 1008 are provided between the spring hook plate 1006 and the support pipe body 201. The hook plate locking bolt 1007 passes through the support pipe body 201 and the spring hook plate 1006, and the hook plate locking nut 1008 is in abutting connection with the spring hook plate 1006. The advantages are that the constant force spring 1005 can provide a constant buffering force to offset part of the self-weight of the support tube assembly 2, reduce the operating force when the operator adjusts the height of the support tube assembly 2, improve the efficiency of height adjustment, and realize convenient multi-level adjustment in the height direction. The cover plate 1002 is detachably connected to the spring box 1001 through the cover plate locking bolt 1003, which facilitates the inspection and replacement of the constant force spring 1005 inside the spring box 1001. The spring positioning bolt 1004 can limit the position of the constant force spring 1005 to prevent the constant force spring 1005 from shifting during operation.

[0042] Specifically, two identical constant force buffer components 10 are provided, symmetrically distributed on both sides of the base tube 1. The constant force spring 1005 and spring hook plate 1006 are also symmetrically distributed on both sides of the support tube body 201. The advantage is that the two symmetrically distributed sets of constant force buffer components 10 can apply symmetrical buffering forces to the support tube body 201, ensuring balanced force on the support tube assembly 2 during lifting and lowering, avoiding tilting and jamming problems caused by unilateral force, and improving the stability and smoothness of the height adjustment process.

[0043] Working principle: When only the base tube 1 and support tube assembly 2 are used, the operator first pulls out the lower locking pin 5 to release the lock. Two sets of symmetrically arranged constant force buffer assemblies 10 simultaneously provide auxiliary pulling force. The constant force spring 1005 in the spring box 1001 applies a constant upward pulling force to the support tube body 201 through the spring hook plate 1006 hooked to the hook plate locking groove 206 to offset part of its own weight and reduce the operating force. The spring positioning bolt 1004 limits the position of the constant force spring 1005. The spring hook plate 1006 is locked and fixed by the hook plate locking bolt 1007 and the hook plate locking nut 1008. During the lifting and lowering process, the guide bar 11 on the outside of the support tube body 201 and the guide rail 12 on the inside of the base tube 1 slide to restrict circumferential rotation and radial offset, and the tube walls of the two do not contact each other to reduce the pressure on the support tube body 201. Low frictional resistance ensures the vertical and stable lifting and lowering of the support tube assembly 2. After adjusting to the target height, the lower locking pin 5 is inserted through the corresponding base tube pin hole 4 and into the support tube pin hole 205 to complete the locking and positioning. After coarse adjustment, the support tube adjusting screw 204 is rotated, and the support height is finely adjusted through its trapezoidal thread engagement with the support tube nut 203. The hemispherical structure at the top of the support tube adjusting screw 204 can adaptively conform to the curved surface segment shape of the ship. The trapezoidal thread has both high load-bearing capacity and self-locking performance. When the support tube assembly 2 is raised and lowered, it is fixed to the support tube limiting plate 801 at the top of the base tube 1 by the auxiliary mounting bolt 802. When the support tube assembly 2 is raised to the maximum stroke, it abuts against the support tube anti-disengagement bolt 803 at the bottom of the support tube body 201, preventing the support tube assembly 2 from continuing to move upward and disengage. When a greater support height is required and the base tube 1, support tube assembly 2, and extension tube assembly 3 are used simultaneously, after the operator completes the adjustment and locking of the support tube assembly 2, the upper locking pin 6 is pulled out to release the locking of the support tube assembly 2 and the extension tube assembly 3. The operator holds the handle 305 on the outside of the extension tube body 301 and moves the extension tube assembly 3 vertically along the support tube body 201. The two tube walls do not contact each other to reduce lifting friction. After adjusting to the target height, the upper locking pin 6 is passed through the corresponding extension tube pin hole 306 and inserted into the support tube pin hole 205 to complete the locking and positioning of the two. Then, the extension tube adjusting screw 304 is rotated, and the height of the extension side is finely adjusted by its trapezoidal thread cooperation with the extension tube nut 303. Its top hemispherical structure can also adaptively fit the curved surface shape. When the extension tube assembly 3 is raised or lowered, the extension tube limiting assembly 9 plays a role in preventing detachment: the extension tube limiting plate 901, which is fixed to the bottom of the extension tube body 301 by the auxiliary installation bolt 2 902, abuts against the extension tube anti-detachment bolt 903 at the top of the support tube body 201 when the extension tube assembly 3 is raised to the maximum stroke, preventing the extension tube assembly 3 from continuing to move upward and detach. When the tooling is under load, the axes of the base tube 1, the support tube body 201 and the extension tube body 301 are collinear. The load is transmitted step by step in the vertical direction and transmitted to the reference plane through the base elbow plate 7, avoiding structural deformation caused by eccentric load and ensuring the overall support is stable and reliable.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel flexible jig tooling for efficient construction of curved sections of ships, comprising a base tube (1), characterized in that: A support tube assembly (2) is inserted into the inner side of the base tube (1), and an extension tube assembly (3) is sleeved on the outer side of the top end of the support tube assembly (2). A lower locking pin (5) is provided between the base tube (1) and the support tube assembly (2), and an upper locking pin (6) is provided between the support tube assembly (2) and the extension tube assembly (3). A support tube limiting assembly (8) is provided between the base tube (1) and the support tube assembly (2), and an extension tube limiting assembly (9) is provided between the extension tube assembly (3) and the support tube assembly (2). Constant force buffer assemblies (10) are symmetrically installed on both sides of the base tube (1). A base elbow plate (7) is welded in a "+" shape on the outer side of the lower part of the base tube (1). Multiple base tube pin holes (4) are opened on the outer side of the base tube (1) in an equally spaced manner. The support tube assembly (2) includes a support tube body (201), a support tube top plate (202) is welded to the top of the support tube body (201), a support tube nut (203) is welded to the top of the support tube top plate (202), and a support tube adjusting screw (204) is threaded on the outer side of the top of the support tube nut (203). The extension tube assembly (3) includes an extension tube body (301), an extension tube top plate (302) is welded to the top of the extension tube body (301), an extension tube nut (303) is welded to the top of the extension tube top plate (302), and an extension tube adjusting screw (304) is threaded on the outer side of the top of the extension tube nut (303).

2. The novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: The outer side of the support tube body (201) is provided with support tube pin holes (205) arranged at equal intervals, and the bottom sides of the support tube body (201) are provided with hook plate snap-fit ​​grooves (206).

3. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 2, characterized in that: The base tube pin hole (4) and the support tube pin hole (205) have the same diameter. The lower locking pin (5) passes through the base tube pin hole (4) and extends into the support tube pin hole (205). The lower part of the support tube body (201) is inserted into the base tube (1). The outer diameter surface of the support tube body (201) does not contact the inner diameter surface of the base tube (1).

4. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: A handle (305) is fixedly installed on the outside of the extension tube body (301), and extension tube pin holes (306) are opened on the outside of the extension tube body (301) in an equally spaced manner.

5. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 4, characterized in that: The extension tube pin hole (306) and the support tube pin hole (205) have the same diameter. The upper locking pin (6) passes through the extension tube pin hole (306) and extends into the support tube pin hole (205). The extension tube body (301) is sleeved on the outer side of the top of the support tube body (201). The inner diameter surface of the extension tube body (301) and the outer diameter surface of the support tube body (201) do not contact each other.

6. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: The support tube limiting assembly (8) includes a support tube limiting plate (801), which is inserted and installed on the edge of the top end of the base tube (1). The support tube limiting plate (801) and the base tube (1) are detachably connected by an auxiliary mounting bolt (802). Support tube anti-loosening bolts (803) are threaded on both sides of the bottom end of the support tube body (201). The support tube anti-loosening bolts (803) and the support tube limiting plate (801) are in abutting connection. The extension tube limiting assembly (9) includes an extension tube limiting plate (901), which is inserted and installed on the edge of the bottom end of the extension tube body (301). The extension tube limiting plate (901) and the extension tube body (301) are detachably connected by auxiliary mounting bolts (902). The two sides of the top end of the support tube body (201) are threaded with extension tube anti-detachment bolts (903), and the extension tube anti-detachment bolts (903) and the extension tube limiting plate (901) are in contact connection.

7. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 6, characterized in that: The cross-sections of the support tube limiting plate (801) and the extension tube limiting plate (901) are both in the shape of an "η". The support tube limiting component (8) and the extension tube limiting component (9) are provided in two identical units. The two support tube limiting components (8) and the extension tube limiting components (9) are symmetrically distributed about the vertical axis of the support tube body (201).

8. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: The constant force buffer assembly (10) includes a spring box (1001), which is fixedly installed on both sides of the base tube (1). The connection between the base tube (1) and the spring box (1001) is designed with an opening. A cover plate (1002) is provided on the outside of the spring box (1001). The spring box (1001) and the cover plate (1002) are detachably connected by a cover plate locking bolt (1003). A spring positioning bolt (1004) is provided on the inside of the spring box (1001). The inside of the spring box (1001) is located at the spring positioning bolt (1004). A constant force spring (1005) is provided on the outside, and a spring hook plate (1006) is provided on the outside of the constant force spring (1005). The spring hook plate (1006) is hooked to the inside of the hook plate locking groove (206). A hook plate locking bolt (1007) and a hook plate locking nut (1008) are provided between the spring hook plate (1006) and the support pipe body (201). The hook plate locking bolt (1007) passes through the support pipe body (201) and the spring hook plate (1006). The hook plate locking nut (1008) and the spring hook plate (1006) are in abutting connection.

9. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 8, characterized in that: Two identical constant force buffer components (10) are provided, and the two constant force buffer components (10) are symmetrically distributed on both sides of the base tube (1). The constant force spring (1005) and the spring hook plate (1006) are symmetrically distributed on both sides of the support tube body (201).

10. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: Guide rails (12) are fixedly installed on both sides inside the base tube (1), and guide bars (11) are fixedly installed on both sides outside the support tube body (201). The guide bars (11) and the guide rails (12) are slidably connected.

11. A novel flexible jig tooling for efficient construction of curved sections of ships according to claim 1, characterized in that: The vertical axes of the base tube (1), the support tube body (201), and the extension tube body (301) are located on the same vertical line. The top ends of the support tube adjusting screw (204) and the extension tube adjusting screw (304) adopt a hemispherical structure. The threads of the support tube adjusting screw (204) and the extension tube adjusting screw (304) adopt trapezoidal threads. Drainage grooves (13) are provided at the bottom ends of the base tube (1) and the base elbow plate (7). The bottom end of the base tube (1) adopts an open design.

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