Spot welding fixing tool
By designing spot welding fixtures, the problem of unstable welding of insulation plates in the LNG cargo containment system was solved, achieving more efficient and higher quality welding results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, the insulation plates of LNG cargo containment systems are prone to detachment during the welding process, resulting in unstable connections and low production efficiency and quality.
A spot welding fixture was designed, including a bracket, a base, and a clamping mechanism. The base clamps two fixed corner pieces, and the clamping mechanism clamps the fixed corner pieces, thereby improving the stability and speed of welding.
This improved the welding stability and production rate of the two-sided fixed corner pieces, and enhanced the welding quality.
Smart Images
Figure CN224059008U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spot welding technology for two-sided fixed corner pieces of LNG ship cargo containment systems, and more specifically, to a spot welding fixture. Background Technology
[0002] LNG carriers are internationally recognized as "three-high" products: high technology, high difficulty, and high added value. LNG carriers are special vessels that transport liquefied gas at a low temperature of -162℃, and are a kind of "super refrigerated truck at sea".
[0003] The containment system of the LNG carrier's liquid cargo tank is the core technology of the LNG carrier. The main function of the liquid cargo containment system is to store LNG cargo with a liquid temperature of -162℃.
[0004] The liquefied cargo containment system is the isolation barrier and thermal insulation system of the liquefied cargo tank. The cargo tank consists of primary and secondary thermal insulation layers and corresponding protective films. The insulation layers are composed of multiple insulating boxes, and the protective films are made of Invar material, also known as "invariant steel." The primary and secondary insulation layers provide effective thermal insulation to maintain the temperature of the cargo inside the tank during transportation. Ammonia gas is introduced during normal loading to ensure safety. Additionally, there is a liquid bend and a gas bend, used for loading and unloading LNG cargo and for the recovery and reuse of volatile gases, respectively.
[0005] The liquid cargo containment system has two main functions: 1. A completely dense metal film ensures no leakage of LNG; 2. Good thermal insulation capabilities prevent the hull from being cooled and losing strength and toughness.
[0006] Currently, when the insulation panels of the LNG cargo containment system are attached to the inner wall of the LNG cargo containment system, they are prone to falling off, resulting in unstable connections. Therefore, two-sided fixing corner brackets are used to connect and fix the insulation panels. However, there is currently no specific welding fixture for the two-sided fixing corner brackets, which leads to technical problems such as low production efficiency and low welding quality.
[0007] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0008] The purpose of this utility model is to provide a spot welding fixture that improves the stability and welding speed of welding two-sided fixed corner pieces, increases the production speed of two-sided fixed corner pieces, and improves the production quality of two-sided fixed corner pieces.
[0009] This utility model provides a spot welding fixing fixture, including a bracket, a base, and a clamping mechanism; the base is installed on the table of the bracket and is used to clamp two fixed corner pieces; the clamping mechanism is installed on the upper end of the bracket and is located directly above the base, and is used to clamp the two fixed corner pieces.
[0010] Furthermore, the base includes a base plate, a corner piece placement plate, a fixed baffle, a movable baffle, a first electric cylinder, and a support plate; the base plate is connected to the platform of the bracket, the corner piece placement plate is connected to the top of the base plate, the fixed baffle is vertically fixedly connected to the top of the base plate on one side of the corner piece placement plate, the support plate is vertically fixedly connected to the top of the base plate on the other side of the corner piece placement plate, the first electric cylinder is fixedly connected to the side of the support plate near the corner piece placement plate, the output end of the first electric cylinder is connected to the movable baffle, and the movable baffle and the fixed baffle are arranged in parallel.
[0011] Using the above technical solution, when in use, the two fixed corner pieces are placed on the corner piece placement plate, and one end of the two fixed corner pieces abuts against the fixed baffle. When the first electric cylinder extends, it will drive the moving baffle to move forward, thereby clamping the two fixed corner pieces.
[0012] Furthermore, multiple stops are connected at intervals to the upper ends of both the fixed baffle and the movable baffle.
[0013] Furthermore, the base also includes a reinforcing baffle, the front end of which is connected to the side of the fixed baffle away from the corner piece placement plate, and the lower part of which is fixedly connected to the base plate.
[0014] Furthermore, the clamping mechanism includes a second electric cylinder, a clamping seat, a clamping head, and a spring; the second electric cylinder is connected to the upper end of the bracket, the clamping seat includes a connecting plate and connecting legs, one side of the connecting plate is connected to the output end of the second electric cylinder, and the connecting legs are vertically connected to the four corners of the other side of the connecting plate, and the clamping head is hinged to the end of the connecting leg; one end of the spring is connected to the connecting leg, and the other end of the spring is connected to the upper end of the clamping head.
[0015] Using the above technical solution, when in use, the second electric cylinder extends, which will drive the pressing seat to move down, thereby driving the pressing head to press the two fixed corner pieces on the corner piece placement plate.
[0016] Furthermore, the spot welding fixture also includes a controller, a first adjusting switch, and a second adjusting switch; the controller is connected to the bracket, and the first adjusting switch and the second adjusting switch are installed on the controller; the first adjusting switch is connected to the first electric cylinder and is used to control the extension, retraction, and stopping of the first electric cylinder; the second adjusting switch is connected to the second electric cylinder and is used to control the extension, retraction, and stopping of the second electric cylinder.
[0017] Furthermore, the bracket includes L-shaped feet, an adjusting plate, and adjusting bolts; two L-shaped feet are spaced apart on one side of the bracket platform, and the base plate is located between the two L-shaped feet. The other side of the L-shaped feet is provided with a slotted hole, and a bolt passes through the slotted hole to connect to the side of the base plate; the adjusting plate is connected to the other end of the bracket platform, and the adjusting plate is provided with a threaded hole. The adjusting bolt is threaded into the threaded hole, and the other end of the adjusting bolt is rotatably connected to the end of the base plate.
[0018] The spot welding fixture of this invention improves the stability and welding speed of welding two-sided fixed corner pieces, thereby increasing the production speed and quality of two-sided fixed corner pieces. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the spot welding fixture provided in an embodiment of the present invention.
[0020] Figure 2 for Figure 1 Another structural schematic diagram of the spot welding fixture.
[0021] Figure 3 for Figure 1 A schematic diagram of the support structure for the spot welding fixture.
[0022] Figure 4 for Figure 1 A schematic diagram of the base of the spot welding fixture.
[0023] Figure 5 for Figure 1 A structural schematic diagram of the base of the spot welding fixture from another perspective.
[0024] Figure 6 for Figure 1 A top view of the base of the spot welding fixture.
[0025] Figure 7 for Figure 1 A schematic diagram of the clamping mechanism of the spot welding fixture.
[0026] The reference numerals and components involved in the accompanying drawings are shown below:
[0027] 100, bracket 110, L-shaped foot 120, adjustment plate
[0028] 130, Adjusting bolt 140, Waist-shaped hole 150, Threaded hole
[0029] 200, base 210, bottom plate 220, corner piece placement plate
[0030] 230, fixed baffle; 240, movable baffle; 250, first electric cylinder
[0031] 260, support plate 270, stop block 280, reinforcing baffle
[0032] 300, clamping mechanism 310, second electric cylinder 320, clamping seat
[0033] 330, clamping head 340, spring 350, connecting plate
[0034] 360°, connecting leg 400, controller 500, first adjustment switch
[0035] 600, Second Adjustment Switch Detailed Implementation
[0036] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0037] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0038] Example 1
[0039] Figure 1 This is a schematic diagram of the structure of the spot welding fixture provided in an embodiment of the present invention. Figure 2 for Figure 1 A structural schematic diagram of the spot welding fixture from another perspective. Please refer to... Figure 1 , Figure 2 The spot welding fixture provided in this embodiment includes a bracket 100, a base 200, and a clamping mechanism 300. The base 200 is installed on the table surface of the bracket 100 and is used to clamp two fixed corner pieces. The clamping mechanism 300 is installed on the upper end of the bracket 100 and is located directly above the base 200. The clamping mechanism 300 is used to clamp the two fixed corner pieces.
[0040] It should be noted that the base 200 is used to clamp the two fixed corner pieces, and the clamping mechanism 300 is used to clamp the two fixed corner pieces; this improves the stability and welding speed of the two fixed corner pieces, thereby increasing the production speed and quality of the two fixed corner pieces.
[0041] Figure 4 for Figure 1 A schematic diagram of the base of the spot welding fixture. Figure 5 for Figure 1 Another structural schematic diagram of the base of the spot welding fixture. Figure 6 for Figure 1 A top view of the base of the spot welding fixture. Please refer to... Figure 4 , Figure 5 , Figure 6 The base 200 of this utility model includes a base plate 210, a corner piece placement plate 220, a fixed baffle 230, a movable baffle 240, a first electric cylinder 250, and a support plate 260. The base plate 210 is connected to the table surface of the bracket 100. The corner piece placement plate 220 is connected to the top of the base plate 210. The fixed baffle 230 is vertically fixedly connected to one side of the corner piece placement plate 220 on the top of the base plate 210. The support plate 260 is vertically fixedly connected to the other side of the corner piece placement plate 220 on the top of the base plate 210. The first electric cylinder 250 is fixedly connected to the side of the support plate 260 near the corner piece placement plate 220. The output end of the first electric cylinder 250 is connected to the movable baffle 240. The movable baffle 240 and the fixed baffle 230 are arranged in parallel.
[0042] It should be noted that during use, the two fixed corner pieces are placed on the corner piece placement plate 220, and one end of the two fixed corner pieces abuts against the fixed baffle 230. When the first electric cylinder 250 extends, it will drive the moving baffle 240 to move forward, thereby clamping the two fixed corner pieces.
[0043] Furthermore, multiple stops 270 are connected at intervals to the upper ends of both the fixed baffle 230 and the movable baffle 240.
[0044] It should be noted that when the two fixed corner pieces are placed on the corner piece placement plate 220, the two fixed corner pieces are located between the stop block 270 and the corner piece placement plate 220, further preventing the two fixed corner pieces from falling off.
[0045] Further reference Figure 4 , Figure 5 , Figure 6The base 200 of this utility model also includes a reinforcing baffle 280. The front end of the reinforcing baffle 280 is connected to the side of the fixed baffle 230 away from the corner piece placement plate 220, and the bottom of the reinforcing baffle 280 is fixedly connected to the base plate 210.
[0046] It should be noted that the reinforced baffle 280 further improves the stability of the connection of the fixed baffle 230.
[0047] Figure 7 for Figure 1 A schematic diagram of the clamping mechanism of the spot welding fixture. Please refer to... Figure 7 The clamping mechanism 300 of this utility model includes a second electric cylinder 310, a clamping seat 320, a clamping head 330, and a spring 340. The second electric cylinder 310 is connected to the upper end of the bracket 100. The clamping seat 320 includes a connecting plate 350 and a connecting leg 360. One side of the connecting plate 350 is connected to the output end of the second electric cylinder 310, and the connecting leg 360 is vertically connected to the four corners of the other side of the connecting plate 350. The clamping head 330 is hinged to the end of the connecting leg 360. One end of the spring 340 is connected to the connecting leg 360, and the other end of the spring 340 is connected to the upper end of the clamping head 330.
[0048] It should be noted that when in use, the second electric cylinder 310 extends, which will cause the pressing seat 320 to move down, thereby causing the pressing head 330 to press the two fixed corner pieces on the corner piece placement plate 220.
[0049] Further reference Figure 1 The spot welding fixture of this utility model also includes a controller 400, a first adjusting switch 500, and a second adjusting switch 600; the controller 400 is connected to the bracket 100, and the first adjusting switch 500 and the second adjusting switch 600 are installed on the controller 400; the first adjusting switch 500 is connected to the first electric cylinder 250 and is used to control the extension, retraction, and stopping of the first electric cylinder 250; the second adjusting switch 600 is connected to the second electric cylinder 310 and is used to control the extension, retraction, and stopping of the second electric cylinder 310.
[0050] It should be noted that the device for supplying power to the controller 400, the first electric cylinder 250, and the second electric cylinder 310 can be an existing power supply device or an external power source.
[0051] Figure 3 for Figure 1 A schematic diagram of the support structure for the spot welding fixture. Please refer to... Figure 3The bracket 100 of this utility model includes L-shaped feet 110, an adjusting plate 120, and adjusting bolts 130. Two L-shaped feet 110 are connected at intervals on one side of the platform of the bracket 100. The base plate 210 is located between the two L-shaped feet 110. The other side of the L-shaped feet 110 is provided with a waist-shaped hole 140, and a bolt passes through the waist-shaped hole 140 to connect to the side of the base plate 210. The adjusting plate 120 is connected to the other end of the platform of the bracket 100. The adjusting plate 120 is provided with a threaded hole 150, and the adjusting bolt 130 is threadedly connected to the threaded hole 150. The other end of the adjusting bolt 130 is rotatably connected to the end of the base plate 210.
[0052] As can be seen from the above description, the advantages of this utility model are:
[0053] The spot welding fixture of this utility model has a base 200 for clamping two fixed corner pieces and a clamping mechanism 300 for clamping the two fixed corner pieces; it improves the stability and welding speed of the two fixed corner pieces, thereby increasing the production speed and quality of the two fixed corner pieces.
[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A spot welding fixture, characterized by, The device comprises a support (100), a base (200) and a pressing mechanism (300); The base (200) is installed on the tabletop of the support (100), and is used for clamping two fixed angle pieces; the pressing mechanism (300) is installed on the upper end of the support (100), is located directly above the base (200), and is used for pressing the two fixed angle pieces.
2. The spot welding fixture of claim 1, wherein, The base (200) comprises a bottom plate (210), an angle piece placing plate (220), a fixed baffle (230), a movable baffle (240), a first electric cylinder (250) and a support plate (260); The bottom plate (210) is connected to the tabletop of the support (100), and the upper surface of the bottom plate (210) is connected with the angle piece placing plate (220); the fixed baffle (230) is vertically and fixedly connected to one side of the upper surface of the bottom plate (210) and located on the side of the angle piece placing plate (220); the support plate (260) is vertically and fixedly connected to the other side of the upper surface of the bottom plate (210) and located on the other side of the angle piece placing plate (220); the first electric cylinder (250) is fixedly connected to one side of the support plate (260) and close to the angle piece placing plate (220); the output end of the first electric cylinder (250) is connected with the movable baffle (240); and the movable baffle (240) and the fixed baffle (230) are arranged in parallel.
3. The spot welding fixture of claim 2, wherein, A plurality of stoppers (270) are connected to the upper ends of the fixed baffle (230) and the movable baffle (240) in a spaced manner.
4. The spot welding fixture of claim 2, wherein, The base (200) further comprises a reinforcing baffle (280), the front end of the reinforcing baffle (280) is connected to one side of the fixed baffle (230) and away from the angle piece placing plate (220), and the lower surface of the reinforcing baffle (280) is fixedly connected to the bottom plate (210).
5. The spot welding fixture of claim 2, wherein, The pressing mechanism (300) comprises a second electric cylinder (310), a pressing seat (320), a pressing head (330) and a spring (340); The second electric cylinder (310) is connected to the upper end of the support (100); the pressing seat (320) comprises a connecting plate (350) and connecting legs (360); one side of the connecting plate (350) is connected to the output end of the second electric cylinder (310); the connecting legs (360) are vertically connected to the four corners of the other side of the connecting plate (350); and the end of the connecting leg (360) is hingedly connected with the pressing head (330). One end of the spring (340) is connected to the connecting leg (360), and the other end of the spring (340) is connected to the upper end of the pressing head (330).
6. The spot welding fixture of claim 5, wherein, The spot welding and fixing tool further comprises a controller (400), a first adjusting switch (500) and a second adjusting switch (600). The controller (400) is connected on the support (100), the first adjusting switch (500) and the second adjusting switch (600) are installed on the controller (400); the first adjusting switch (500) is connected with the first electric cylinder (250), for controlling the first electric cylinder (250) to stretch out and retract and stop; The second adjusting switch (600) is connected with the second electric cylinder (310), for controlling the second electric cylinder (310) to stretch out and retract and stop.
7. The spot welding fixture of claim 2, wherein, The support (100) comprises an L-shaped foot iron (110), an adjusting plate (120) and an adjusting bolt (130); Two L-shaped foot irons (110) are connected on one side of the support (100) in intervals, the bottom plate (210) is located between the two L-shaped foot irons (110), a waist-shaped hole (140) is arranged on the other side of the L-shaped foot iron (110), and the L-shaped foot iron (110) is connected with the side of the bottom plate (210) through the waist-shaped hole (140) and a bolt; The adjusting plate (120) is connected on the other end of the support (100), a threaded hole (150) is arranged on the adjusting plate (120), the adjusting bolt (130) is screw-connected in the threaded hole (150), and the other end of the adjusting bolt (130) is rotatably connected on the end of the bottom plate (210).