Spring set quick dismounting tool and overhauling method

Abstract

The application discloses a spring group quick dismounting tool and a maintenance method, belonging to the technical field of ladle slide nozzle mechanism maintenance, which comprises a fixed base, static clamping blocks and dynamic clamping blocks are arranged on the fixed base, and the horizontal distance between the dynamic clamping blocks and the static clamping blocks can be adjusted; a limiting frame is provided with a containing cavity with an open top, the horizontal dimension of the containing cavity is larger than the radial dimension of the small diameter section of the spring group and smaller than the radial dimension of the large diameter section of the spring group, and the horizontal ends of the limiting frame are provided with limiting grooves in communication with the containing cavity and capable of forming a stop cooperation with the large diameter section of the spring group; an axial pressing plate is arranged in the containing cavity, and the axial pressing plate can exert an axial pressure on the spring group. The application adopts an auxiliary limiting mode, the limiting grooves and the spring box form a stop cooperation to realize the axial positioning of the spring group, and the axial pressing plate exerts an axial pressure on the spring box base, so that the quick dismounting of the spring group is realized, and the maintenance efficiency of the spring group can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of maintenance technology for the sliding gate mechanism of steel ladles, specifically to a quick disassembly and assembly tooling and maintenance method for spring assemblies. Background Technology

[0002] The sliding gate nozzle, located at the bottom of the ladle, is a crucial device for controlling the flow of molten steel in the ladle and is one of the key functional pieces of equipment in steelmaking production. Its function is to control the flow of molten steel from the ladle to the continuous casting tundish, precisely regulating the water flow from the ladle to the tundish to balance the inflow and outflow of molten steel. This makes continuous casting operations easier to control, acting as a "valve" for controlling the flow of molten steel. The sliding gate nozzle mechanism consists of a base, support, slider, spring assembly, and drive components.

[0003] As a crucial component of the sliding gate mechanism, the spring assembly ensures the closure of the upper and lower sliding gate frames. During closure, it provides additional elastic pressure to maintain a tight seal, enhancing the sealing stability of the sliding gate mechanism, preventing molten steel leakage, and improving production safety. Figure 5 , Figure 6 As shown, the spring assembly 200 consists of a spring box 210, a spring box base 220, a stress plate 250, and a stress spring 230. The stress spring 230 is sleeved on the column 222 of the spring box base 220, with one end of the stress spring 230 abutting against the end face of the small-diameter section 212 of the spring box 210, and the other end abutting against the seat 221 of the spring box base 220. The spring box base 220 extends beyond the column 222 of the spring box 210. A mounting groove is provided, in which a small elastic baffle 270 is installed, and a washer 260 is provided between the end faces of the small elastic baffle 270 and the spring box 210; a stress plate 260 and a large elastic baffle 250 are provided between the seat 221 of the spring box base 220 and the other end of the spring box 210. The large elastic baffle 250 is installed in the mounting groove on the inner wall of the spring box 210, and the radial dimension of the stress plate 260 is larger than the inner diameter of the large elastic baffle 250.

[0004] In daily production activities, spring assemblies are subject to wear or deformation due to high temperatures, requiring regular maintenance, cleaning, and replacement of stress springs. However, disassembling the spring assembly not only makes disassembly difficult but also easily damages the spring assembly, thus increasing the difficulty of repairing the spring assembly.

[0005] Therefore, how to achieve convenient and quick assembly and disassembly of spring assemblies has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a quick assembly and disassembly tool for spring assemblies to solve the technical problem of inconvenient assembly and disassembly of existing spring assemblies.

[0007] The technical solution adopted in this invention is: a quick-release and assembly tooling for spring assemblies, the tooling comprising:

[0008] A fixed base, on which a stationary clamping block is provided;

[0009] A movable clamping block is movably and fixedly connected to a fixed base so that the lateral distance between the movable clamping block and the stationary clamping block can be adjusted.

[0010] The limiting frame has a receiving cavity with a top opening. One end of the receiving cavity extends longitudinally and penetrates the limiting frame. The lateral dimension of the receiving cavity is larger than the radial dimension of the small diameter section of the spring assembly and smaller than the radial dimension of the large diameter section of the spring assembly. The two lateral ends of the limiting frame are provided with limiting grooves that communicate with the receiving cavity and can form a stop fit with the large diameter section of the spring assembly.

[0011] A longitudinal screw, which is threadedly connected to a threaded hole at one longitudinal end of the limiting frame;

[0012] An axial pressure plate is disposed in the accommodating cavity and is fixedly connected to one end of a longitudinal screw.

[0013] The first rocker arm is disposed on the longitudinal side of the limiting frame, and the first rocker arm is fixedly connected to the other end of the longitudinal screw.

[0014] A clamping plate is provided along the longitudinal direction, and the top end of the clamping plate is vertically and fixedly connected to the lower surface of the limiting frame.

[0015] Preferably, the fixed base is provided with a transverse sliding groove and a mounting block, and the bottom of the movable clamping block is slidably connected in the transverse sliding groove; the movable clamping block is disposed between the mounting block and the stationary clamping block, and a transverse screw is threadedly connected to the mounting block, one end of the transverse screw is rotatably connected to the movable clamping block, and the other end of the transverse screw is fixedly connected to the second rocker handle.

[0016] Preferably, the width of the transverse groove is greater than the end dimension of the spring box base and less than the column dimension of the spring box base.

[0017] Preferably, the fixed base has connecting ear plates on both longitudinal sides.

[0018] Preferably, the limiting frame is provided with a pressure cap, and the two transverse ends of the pressure cap are provided with insert plates for inserting into the limiting groove, and the transverse distance between the two insert plates is greater than the radial dimension of the large diameter section of the spring assembly.

[0019] The second objective of this invention is to provide a quick maintenance method for spring assemblies. This method utilizes the aforementioned quick disassembly and assembly fixture for spring assemblies and includes the following steps:

[0020] S10: Place the spring assembly longitudinally in the receiving cavity of the disassembly and assembly fixture, and make the large diameter section of the spring assembly face the limiting groove;

[0021] S20: Check whether the stress spring tension meets the requirements by using the testing instrument on the longitudinal side of the disassembly and assembly tool. If not, proceed to S30.

[0022] S30: First, remove the spring assembly from the limiting frame, then remove the large elastic retaining ring and stress plate of the large diameter section of the spring assembly using retaining ring pliers, and then place the spring assembly back into the receiving cavity;

[0023] S40: The spring box base is longitudinally compressed by an axial pressure plate;

[0024] S50: After the spring box base moves axially, the small elastic retaining ring and washer of the small diameter section of the spring assembly are removed by retaining ring pliers;

[0025] S60: First, insert the end of the spring box base into the transverse sliding groove of the fixed base, and make the moving clamp and the stationary clamp clamp the column body of the fixed spring box base, and then tighten the preload bolts on the seat of the spring box base.

[0026] S70: After replacing the stress spring, place it in the receiving cavity and reinstall the small elastic retaining ring and washer in the small diameter section of the spring assembly;

[0027] S80: Install a large elastic retaining ring and stress plate on the large diameter section of the spring assembly.

[0028] The beneficial effects of this invention are:

[0029] This invention employs an auxiliary limiting method, with limiting grooves opened on both sides of the limiting frame accommodating the spring assembly. The limiting grooves form a stop fit with the shoulder surfaces between the large-diameter and small-diameter sections of the spring box, thereby achieving axial positioning of the spring assembly. Furthermore, the axial pressure plate on the longitudinal side of the limiting frame applies axial pressure to the base of the spring box, creating conditions for the disassembly of the small elastic retaining ring and washer of the spring assembly. This enables rapid assembly and disassembly of the spring assembly, effectively improving the maintenance efficiency of the spring assembly. Attached Figure Description

[0030] Figure 1 This is one of the structural schematic diagrams of the quick-release and disassembly tooling for the spring assembly of the present invention;

[0031] Figure 2 This is a second structural schematic diagram of the quick-release and disassembly tooling for the spring assembly of the present invention;

[0032] Figure 3 This is one of the reference diagrams showing the usage state of the quick-release and disassembly tooling for the spring assembly of the present invention;

[0033] Figure 4 The second reference figure shows the usage state of the quick-release tooling for the spring assembly of the present invention.

[0034] Figure 5 This is a schematic diagram of the spring assembly.

[0035] Figure 6 This is a schematic diagram of the spring box base.

[0036] Explanation of the reference numerals in the figure:

[0037] 100. Disassembly and assembly tools;

[0038] 110. Fixed base; 111. Static clamping block; 112. Horizontal slide groove; 113. Mounting block; 114. Horizontal screw; 115. Second crank handle; 116. Connecting ear plate;

[0039] 120. Moving clamp;

[0040] 130. Limiting bracket; 131. Receiving cavity; 132. Limiting groove;

[0041] 140. Longitudinal screw;

[0042] 150. Axial pressure plate;

[0043] 160. First crank;

[0044] 170. Plywood;

[0045] 180. Cap; 181. Insert plate; 182. Handle;

[0046] 200. Spring assembly;

[0047] 210. Spring box; 211. Large diameter section; 212. Small diameter section;

[0048] 220. Spring box base; 221. Base body; 222. Column body; 223. End;

[0049] 230. Stress spring;

[0050] 240. High elasticity retaining ring;

[0051] 250. Stress plate;

[0052] 260. Washers;

[0053] 270. Small elastic retaining ring;

[0054] 280. Preload bolts. Detailed Implementation

[0055] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0056] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0059] Examples, such as Figures 1-6 As shown, a quick-release tooling for a spring assembly is provided. The tooling 100 includes:

[0060] A fixed base 110 is horizontally positioned, and a static clamping block 111 is fixedly connected to one of the horizontal ends of the fixed base 110.

[0061] The movable clamping block 120 is slidably connected to the fixed base 110 in the lateral direction, and the movable clamping block 120 can be fixedly connected to the fixed base 110 so that the lateral distance between the movable clamping block 120 and the stationary clamping block 111 can be adjusted.

[0062] The limiting frame 130 is arranged in the longitudinal direction. The limiting frame 130 has a receiving cavity 131 with a top opening. One end of the receiving cavity 131 extends longitudinally and passes through the limiting frame 130. The lateral dimension of the receiving cavity 131 is larger than the radial dimension of the small diameter section 212 of the spring assembly 200 and smaller than the radial dimension of the large diameter section 211 of the spring assembly 200. At both lateral ends of the limiting frame 130, there are limiting grooves 132 that communicate with the receiving cavity 131 and can form a stop fit with the large diameter section 211 of the spring assembly 200.

[0063] A longitudinal screw 140 is provided along the longitudinal direction and is threadedly connected to a threaded hole at one longitudinal end of the limit frame 130.

[0064] An axial pressure plate 150 is disposed in the accommodating cavity 131 and is fixedly connected to one end of the longitudinal screw 140, for applying axial pressure to the spring box base 220 of the spring assembly 200 in the accommodating cavity 131.

[0065] A first rocker arm 160 is disposed on the longitudinal side of the limiting frame 130 and is fixedly connected to the other end of the longitudinal screw 140 for driving the longitudinal screw 140 to rotate.

[0066] The clamping plate 170 is arranged in the longitudinal direction, and the top of the clamping plate 170 is vertically and fixedly connected to the lower surface of the limiting frame 130, so as to achieve the fixed connection between the limiting frame 130 and the fixed base 110 by clamping and fixing the clamping plate 170 through the moving clamping block 120 and the stationary clamping block 111.

[0067] This invention employs an auxiliary limiting method. Limiting grooves 132 are provided on both sides of the limiting frame 130 that houses the spring assembly 200. The limiting grooves 132 form a stop fit with the shoulder surfaces of the large-diameter section 211 and the small-diameter section 212 of the spring box 210, thereby achieving axial limiting of the spring assembly 200. Axial pressure is applied to the spring box base 220 by the axial pressure plate 150 on the longitudinal side of the limiting frame 130, which creates conditions for the disassembly of the small elastic retaining ring 270 and the washer 260 of the spring assembly 200, thereby achieving rapid disassembly and assembly of the spring assembly 200 and effectively improving the maintenance efficiency of the spring assembly 200.

[0068] It should be noted that the horizontal direction in this application refers to Figure 1 The direction of the single arrow in the image, the vertical direction refers to... Figure 1 The direction of the double arrow in the image.

[0069] In one specific embodiment, such as Figure 1 , Figure 2As shown, the fixed base 110 is provided with a transverse sliding groove 112 and a mounting block 113. The transverse sliding groove 112 is arranged in the middle of the fixed base 110 in the transverse direction, and the mounting block 113 is fixedly arranged at the other end of the fixed base 110 in the longitudinal direction. The bottom of the movable clamping block 120 is slidably connected in the transverse sliding groove 112, and the movable clamping block 120 is arranged between the mounting block 113 and the stationary clamping block 111. The mounting block 113 is provided with a transverse threaded hole (not shown in the figure). A transverse screw 114 is threadedly connected in the transverse threaded hole. One end of the transverse screw 114 is rotatably connected to the movable clamping block 120 through a bearing, and the other end of the transverse screw 114 is fixedly connected to a second rocker 115 so that the transverse screw 114 is driven to rotate in the transverse threaded hole through the second rocker 115, and then the movable clamping block 120 is driven to move laterally on the fixed base 110 through threaded transmission, so that the movable clamping block 120 and the stationary clamping block 111 clamp or release the clamping plate 170.

[0070] Preferred, such as Figure 1 , Figure 2 , Figure 4 As shown, the width of the transverse groove 112 is greater than the end size of the spring box base 220 and smaller than the column size of the spring box base 220, so that the end 223 of the spring box base 220 can be inserted into the transverse groove 112 on the fixed base 110, and the spring box base 220 is fixed by the clamping and fixing action of the movable clamping block 120 and the stationary clamping block 111 on the column 222 of the spring box base 220, so as to facilitate the use of a wrench to tighten the preload bolt 280.

[0071] In one specific embodiment, such as Figure 1 , Figure 2 As shown, there are four connecting ear plates 116 on both longitudinal sides of the fixed base 110. The four connecting ear plates 116 are fixedly arranged on both longitudinal sides of the fixed base 110. The connecting ear plates 116 are used to fix the fixed base 110 on the worktable.

[0072] In one specific embodiment, such as Figure 2 As shown, a pressure cover 180 is provided on the limiting frame 130. Both ends of the pressure cover 180 are provided with insert plates 181. The insert plates 181 can be inserted into the limiting groove 132, and the lateral distance between the two insert plates 181 is greater than the radial dimension of the large diameter section 211 of the spring assembly 200.

[0073] Examples, such as Figure 3 , Figure 4 As shown, a quick maintenance method for spring assemblies is provided. This method uses the aforementioned quick disassembly and assembly tooling for spring assemblies and includes the following steps:

[0074] Tension testing, specifically including:

[0075] The spring assembly 200 is placed longitudinally in the receiving cavity 131 of the limiting frame 130, and the large diameter section 211 of the spring assembly 200 is aligned with the limiting groove 132, that is, the spring assembly 200 is axially fixed, and one end of the spring assembly 200 extends out of the receiving cavity 131.

[0076] The tension of the stress spring 230 is checked by the detection instrument on the longitudinal side of the limit frame 130. If the tension is greater than 17.5KN, the stress spring 230 can continue to be used without replacement. If not, the stress spring 230 should be replaced.

[0077] The disassembly and assembly of spring assembly 200 specifically includes:

[0078] First, remove the spring assembly 200 from the receiving cavity 131 of the limiting frame 130. Then, remove the large elastic retaining ring 240 and stress plate 250 of the large diameter section 211 of the spring assembly 200 using retaining ring pliers. Finally, place the spring assembly 200 longitudinally into the receiving cavity 131 of the limiting frame 130.

[0079] The longitudinal screw 140 is rotated by the first rocker 160 so that the axial pressure plate 150 longitudinally presses the seat 221 of the spring box base 220.

[0080] After the spring box base 220 is moved axially, the small elastic retaining ring 270 and washer 260 of the small diameter section 212 of the spring assembly 200 are removed by retaining ring pliers.

[0081] First, insert the end 223 of the spring box base 220 into the transverse sliding groove 112 of the fixed base 110, and clamp the column body 222 of the fixed spring box base 220 with the moving clamp 120 and the stationary clamp 111. Then, tighten the preload bolt 280 on the seat body 221 of the spring box base 220 to a tightening requirement of 130N. -m .

[0082] After replacing the stress spring 230, the spring assembly 200 is placed back into the receiving cavity 131 of the limit frame 130. Then, under the action of the axial pressure plate 150, the small elastic retaining ring 270 and washer 260 are reinstalled in the small diameter section 212 of the spring assembly 200.

[0083] Remove the spring assembly 200 from the limit frame 130, and reinstall the large elastic retaining ring 240 and stress plate 250 on the large diameter section 211 of the spring assembly 200.

[0084] Compared with the prior art, this application has at least the following beneficial technical effects:

[0085] After using the disassembly and assembly tooling in this application, the average number of spring assemblies to be disassembled, inspected and repaired per month is 46, compared to the previous average of 34 per month, the repair rate has increased by 35%, and about 552 springs can be disassembled, inspected and repaired per year, with about 7 to 8 new parts replaced per month, effectively improving the reuse rate of equipment spare parts.

[0086] The disassembly and assembly tooling of this application can effectively improve the quality and cycle of disassembly, inspection and repair of spring assemblies, reduce equipment procurement costs, thereby improving the efficiency of disassembly, inspection and repair of slider mechanisms and reducing construction labor costs.

[0087] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A spring set quick dismounting tool, characterized in that, The disassembling and assembling tool (100) comprises: A fixed base (110) provided with a static clamp block (111); A dynamic clamp block (120) movably fixedly connected with the fixed base (110) so that the lateral spacing of the dynamic clamp block (120) and the static clamp block (111) can be adjusted; A limiting frame (130) provided with a top-open accommodating cavity (131) extending longitudinally at one end and penetrating through the limiting frame (130), the lateral dimension of the accommodating cavity (131) being greater than the radial dimension of the small-diameter section (212) of the spring set (200) and less than the radial dimension of the large-diameter section (211) of the spring set (200), and the lateral ends of the limiting frame (130) being provided with limiting grooves (132) in communication with the accommodating cavity (131) and capable of forming a stop cooperation with the large-diameter section (211) of the spring set (200); A longitudinal screw rod (140) threadedly connected in a threaded hole at one longitudinal end of the limiting frame (130); An axial pressing plate (150) arranged in the accommodating cavity (131) and fixedly connected with one end of the longitudinal screw rod (140); A first handle (160) arranged at one longitudinal side of the limiting frame (130) and fixedly connected with the other end of the longitudinal screw rod (140); A clamping plate (170) arranged in the longitudinal direction and fixedly connected with the lower surface of the limiting frame (130) at the top end.

2. The spring set quick dismounting tool according to claim 1, characterized in that, The fixed base (110) is provided with a lateral sliding groove (112) and a mounting block (113), the bottom of the dynamic clamp block (120) is slidingly connected in the lateral sliding groove (112); the dynamic clamp block (120) is arranged between the mounting block (113) and the static clamp block (111), and the mounting block (113) is threadedly connected with a lateral screw rod (114), one end of the lateral screw rod (114) is rotatably connected with the dynamic clamp block (120), and the other end of the lateral screw rod (114) is fixedly connected with a second handle (115).

3. The spring set quick dismounting tool according to claim 2, characterized in that, The groove width of the lateral sliding groove (112) is greater than the end head dimension of the spring box base (220) and less than the column body dimension of the spring box base (220).

4. The spring set quick dismounting tool according to claim 2, characterized in that, The longitudinal sides of the fixed base (110) are provided with connecting lug plates (116).

5. The spring set quick dismounting tool according to claim 1, characterized in that, The limiting frame (130) is provided with a pressing cover (180), the lateral ends of the pressing cover (180) are provided with plug plates (181) for being inserted into the limiting grooves (132), and the lateral spacing of the two plug plates (181) is greater than the radial dimension of the large-diameter section (211) of the spring set (200).

6. A method for quickly overhauling a spring set using the quick dismounting and mounting tool for a spring set according to any one of claims 1 to 5, characterized in that, The maintenance method comprises the following steps: S10: longitudinally placing the spring set (200) in the accommodating cavity (131) of the limiting frame (130) and making the large-diameter section (211) of the spring set (200) opposite to the limiting grooves (132); S20: whether the tension of the stress spring (230) meets the requirements is detected by the detection instrument on the longitudinal side of the limiting frame (130), if not, S30 is executed; S30: the spring set (200) is taken out from the limiting frame (130) first, then the large elastic retaining ring (240) and the stress pressing plate (250) of the large diameter section (211) of the spring set (200) are removed by the retaining ring clamp, and then the spring set (200) is placed in the accommodating cavity (131) again; S40: the seat body (221) of the spring box base (220) is longitudinally extruded by the axial pressing plate (150); S50: after the axial movement of the spring box base (220), the small elastic retaining ring (270) and the washer (260) of the small diameter section (212) of the spring set (200) are removed by the retaining ring clamp; S60: the end (223) of the spring box base (220) is inserted into the transverse sliding groove (112) of the fixed base (110) first, and the movable clamp block (120) and the static clamp block (111) clamp and fix the column body (222) of the spring box base (220), and then the pre-tightening force bolt (280) on the seat body (221) of the spring box base (220) is tightened; S70: a new stress spring (230) is replaced, and under the action of the axial pressing plate (150), the small elastic retaining ring (270) and the washer (260) are reloaded on the small diameter section (212) of the spring set (200); S80: the large elastic retaining ring (240) and the stress pressing plate (250) are reloaded on the large diameter section (211) of the spring set (200).

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