Quick disassembling and assembling tool for spring set and overhauling method

Abstract

The invention discloses a quick dismounting and mounting tool for a spring set and an overhauling method, and belongs to the technical field of steel ladle sliding nozzle mechanism overhauling. The quick dismounting and mounting tool comprises a fixed base, a static clamping block and a movable clamping block are arranged on the fixed base, and the transverse distance between the movable clamping block and the static clamping block can be adjusted; the limiting frame is provided with a containing cavity with an opening in the top, the transverse size of the containing cavity is larger than the radial size of the small-diameter section of the spring set and smaller than the radial size of the large-diameter section of the spring set, and the two transverse ends of the limiting frame are provided with limiting grooves which are communicated with the containing cavity and can be in stopping fit with the large-diameter section of the spring set; the axial pressing plate is arranged in the containing cavity, and the axial pressing plate can apply axial pressure to the spring set. An auxiliary limiting mode is adopted, the limiting groove and the spring box are in stop fit to achieve axial positioning of the spring set, axial pressure is applied to a base of the spring box through the axial pressing plate, rapid disassembly and assembly of the spring set are achieved, and the overhauling efficiency of the spring set can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of ladle sliding nozzle mechanism maintenance, and in particular to a spring group quick disassembly and assembly tool and a maintenance method. Background Art

[0002] The sliding gate mechanism is located at the bottom of the ladle. It is an important device for controlling the flow of molten steel in the ladle and one of the key functional equipment in steelmaking production. The function of the sliding gate mechanism is to control the switch of molten steel from the ladle to the continuous casting tundish. It can accurately adjust the water flow from the ladle to the continuous casting tundish so that the inflow and outflow of molten steel are balanced, making the continuous casting operation easier to control, and playing the role of a "valve" to control the flow of molten steel. Among them, the sliding gate mechanism consists of a base, a bracket, a slider, a spring group and a drive component.

[0003] As an important component of the sliding gate mechanism, the spring group is used to ensure the closure of the upper and lower slide frames of the sliding gate, and to provide additional elastic pressure when the upper and lower slide frames are closed to ensure that the upper and lower slide frames remain tightly closed, thereby enhancing the sealing stability of the slide mechanism, avoiding leakage of molten steel, and improving production safety. Figure 5 , Figure 6 As shown, the spring assembly 200 is composed of a spring box 210, a spring box base 220, a stress pressure plate 250 and a stress spring 230, wherein the stress spring 230 is sleeved on the column 222 of the spring box base 220, and one end of the stress spring 230 abuts against the end surface of the small diameter section 212 of the spring box 210, and the other end of the stress spring 230 abuts against the seat body 221 of the spring box base 220; A mounting groove is provided, in which a small elastic baffle 270 is installed, and a washer 260 is provided between the small elastic baffle 270 and the end surface of the spring box 210; a stress pressure plate 260 and a large elastic retaining ring 250 are provided between the seat body 221 of the spring box base 220 and the other end of the spring box 210, and the large elastic retaining ring 250 is installed in the mounting groove on the inner wall of the spring box 210, and the radial dimension of the stress pressure plate 260 is greater than the inner diameter dimension of the large elastic retaining ring 250.

[0004] In daily production activities, the spring assembly is subject to wear or deformation due to high temperature, and requires regular maintenance, cleaning and replacement of stress springs. However, when disassembling the spring assembly, not only is the disassembly unchanged, but it is also easy to cause damage to the spring assembly, thereby increasing the difficulty of repairing the spring assembly.

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

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

[0007] The technical solution adopted by the present invention is: a spring assembly quick disassembly and assembly tool, the disassembly and assembly tool comprising:

[0008] A fixed base, wherein a static clamping block is provided on the fixed base;

[0009] A dynamic clamping block, the dynamic clamping block is movably and fixedly connected to the fixed base, so that the lateral spacing between the dynamic clamping block and the static clamping block can be adjusted;

[0010] A limit frame, wherein the limit frame is provided with a receiving cavity with a top opening, one end of the receiving cavity extends longitudinally and passes through the limit frame, the transverse dimension of the receiving 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 both transverse ends of the limit frame are provided with a limiting groove which is communicated with the receiving cavity and can form a stopper with the large diameter section of the spring group;

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

[0012] An axial pressing plate, which is disposed in the accommodating cavity and is fixedly connected to one end of the longitudinal screw;

[0013] A first crank handle, which is disposed on one longitudinal side of the limiting frame and is fixedly connected to the other end of the longitudinal screw rod;

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

[0015] Preferably, a transverse slide groove and a mounting block are provided on the fixed base, and the bottom of the dynamic clamping block is slidably connected in the transverse slide groove; the dynamic clamping block is arranged between the mounting block and the static clamping block, and a transverse screw is threadedly connected to the mounting block, one end of the transverse screw is rotatably connected to the dynamic clamping block, and the other end of the transverse screw is fixedly connected to the second rocker.

[0016] Preferably, the width of the transverse sliding groove is larger than the end size of the spring box base and smaller than the column size of the spring box base.

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

[0018] Preferably, a pressure cover is provided on the limiting frame, and plug plates for inserting into the limiting groove are provided at both lateral ends of the pressure cover, and the lateral spacing between the two plug plates is greater than the radial dimension of the large diameter section of the spring group.

[0019] The second object of the present invention is to provide a method for rapid maintenance of a spring assembly, wherein the method uses the above-mentioned rapid disassembly and assembly tool for the spring assembly, and the method comprises the following steps:

[0020] S10: placing the spring assembly longitudinally in the accommodating cavity of the disassembly and assembly tool, and making the large diameter section of the spring assembly face the limiting groove;

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

[0022] S30: firstly taking out the spring assembly from the limiting frame, then removing the large elastic retaining ring and the stress pressure plate of the large diameter section of the spring assembly by using retaining ring pliers, and then placing the spring assembly in the accommodating cavity again;

[0023] S40: longitudinally pressing the seat body of the spring box base through the axial pressure plate;

[0024] S50: after the spring box base is axially moved, the small elastic retaining ring and the washer of the small diameter section of the spring group are removed by using retaining ring pliers;

[0025] S60: first inserting the end of the spring box base into the transverse slide groove of the fixed base, and making the dynamic clamping block and the static clamping block clamp the column body of the fixed spring box base, and then tightening the preload bolts on the seat body of the spring box base;

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

[0027] S80: Reinstall the large circlip and stress plate on the large diameter section of the spring assembly.

[0028] Beneficial effects of the present invention:

[0029] The present invention adopts an auxiliary limiting method, and provides limiting grooves on both lateral sides of the limiting frame accommodating the spring group. The limiting grooves form a stopper cooperation with the shoulder surface between the large diameter section and the small diameter section of the spring box, so as to realize the axial positioning of the spring group, and apply axial pressure to the spring box base through the axial pressure plate on the longitudinal side of the limiting frame, so as to create conditions for the removal of the small elastic retaining ring and the gasket of the spring group, thereby realizing the rapid disassembly and assembly of the spring group, and can effectively improve the maintenance efficiency of the spring group. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the quick disassembly and assembly tool of the spring assembly of the present invention;

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

[0032] Figure 3 This is a reference diagram of the use state of the spring assembly quick disassembly and assembly tool of the present invention;

[0033] Figure 4 The second reference figure is a usage state of the spring assembly quick disassembly and assembly tool of the present invention.

[0034] Figure 5 It is the structural schematic diagram of the spring group;

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

[0036] Description of reference numerals in the figures:

[0037] 100. Disassembly and assembly tools;

[0038] 110, fixed base; 111, static clamping block; 112, transverse slide groove; 113, mounting block; 114, transverse screw rod; 115, second crank handle; 116, connecting ear plate;

[0039] 120, moving clamp;

[0040] 130, limiting frame; 131, accommodating cavity; 132, limiting groove;

[0041] 140, longitudinal screw;

[0042] 150, axial pressure plate;

[0043] 160, first crank;

[0044] 170, splint;

[0045] 180, gland; 181, plug plate; 182, handle;

[0046] 200, spring set;

[0047] 210, spring box; 211, large diameter section; 212, small diameter section;

[0048] 220, spring box base; 221, seat body; 222, column body; 223, end;

[0049] 230, stress spring;

[0050] 240, large elastic retaining ring;

[0051] 250, stress plate;

[0052] 260, gasket;

[0053] 270, small elastic retaining ring;

[0054] 280. Preload bolts. DETAILED DESCRIPTION

[0055] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0056] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0059] Examples, such as Figure 1-Figure 6 As shown, a spring assembly quick disassembly and assembly tool 100 includes:

[0060] The fixed base 110 is horizontally arranged, and a static clamping block 111 is fixedly connected to one lateral end of the fixed base 110 .

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

[0062] The limit frame 130 is arranged along the longitudinal direction, and a receiving cavity 131 with a top opening is provided on the limit frame 130. One end of the receiving cavity 131 extends longitudinally and passes through the limit frame 130, and the lateral dimension of the receiving cavity 131 is larger than the radial dimension of the small diameter section 212 of the spring group 200 and smaller than the radial dimension of the large diameter section 211 of the spring group 200. Both lateral ends of the limit frame 130 are provided with a limiting groove 132 that is connected to the receiving cavity 131 and can form a stopper with the large diameter section 211 of the spring group 200.

[0063] The longitudinal screw rod 140 is arranged along the longitudinal direction, and the longitudinal screw rod 140 is threadedly connected to a threaded hole at one longitudinal end of the limiting frame 130 .

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

[0065] The first crank 160 is disposed on one longitudinal side of the limiting frame 130 , and the first crank 160 is fixedly connected to the other end of the longitudinal screw rod 140 , so as to drive the longitudinal screw rod 140 to rotate.

[0066] The clamping plate 170 is arranged along the longitudinal direction, and the top end of the clamping plate 170 is vertically fixedly connected to the lower surface of the limit frame 130, so that the clamping plate 170 is clamped and fixed by the dynamic clamping block 120 and the static clamping block 111 to achieve a fixed connection between the limit frame 130 and the fixed base 110.

[0067] The present invention adopts an auxiliary limiting method, and a limiting groove 132 is opened on both lateral sides of the limiting frame 130 that accommodates the spring group 200. The limiting groove 132 forms a stopper with the shoulder surface between the large diameter section 211 and the small diameter section 212 of the spring box 210 to achieve axial limiting of the spring group 200, and an axial pressure is applied to the spring box base 220 through the axial pressure plate 150 on the longitudinal side of the limiting frame 130, thereby creating conditions for disassembly of the small elastic retaining ring 270 and the washer 260 of the spring group 200, thereby achieving rapid disassembly and assembly of the spring group 200, which can effectively improve the maintenance efficiency of the spring group 200.

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

[0069] In a specific embodiment, if Figure 1 , Figure 2As shown, the fixed base 110 is provided with a transverse slide groove 112 and a mounting block 113, the transverse slide groove 112 is arranged in the middle of the fixed base 110 along the transverse direction, and the mounting block 113 is fixedly arranged at the other transverse end of the fixed base 110 along the longitudinal direction; the bottom of the movable clamping block 120 is slidably connected in the transverse slide groove 112, and the movable clamping block 120 is arranged between the mounting block 113 and the static clamping block 111; the mounting block 113 is provided with a transverse threaded hole (not shown in the figure), and 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 the second crank 115, so that the transverse screw 114 is driven to rotate in the transverse threaded hole through the second crank 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 static clamping block 111 clamp or release the clamping plate 170.

[0070] Preferably, Figure 1 , Figure 2 , Figure 4 As shown, the groove width of the transverse groove 112 is larger 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 column 222 of the spring box base 220 is clamped and fixed by the dynamic clamping block 120 and the static clamping block 111, so as to facilitate the use of a wrench to tighten the preload bolt 280.

[0071] In a specific embodiment, if Figure 1 , Figure 2 As shown, connecting ear plates 116 are provided on both longitudinal sides of the fixed base 110. There are four connecting ear plates 116, and 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 workbench.

[0072] In a specific embodiment, if Figure 2 As shown, a pressure cover 180 is provided on the limiting frame 130 , and plug plates 181 are provided at both lateral ends of the pressure cover 180 . The plug plates 181 can be inserted into the limiting groove 132 , and the lateral spacing between the two plug 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 method for quick maintenance of a spring assembly is provided, wherein the method uses the above-mentioned quick disassembly and assembly tool for the spring assembly, and the method comprises the following steps:

[0074] Tension testing, including:

[0075] The spring assembly 200 is longitudinally placed in the accommodating 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 accommodating cavity 131 .

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

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

[0078] First, take out the spring assembly 200 from the accommodating cavity 131 of the limiting frame 130, then remove the large elastic retaining ring 240 and the stress pressure plate 250 of the large diameter section 211 of the spring assembly 200 by using retaining ring pliers, and then place the spring assembly 200 longitudinally in the accommodating cavity 131 of the limiting frame 130.

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

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

[0081] First, insert the end 223 of the spring box base 220 into the horizontal slide groove 112 of the fixed base 110, and clamp the column 222 of the fixed spring box base 220 with the movable clamp block 120 and the static clamp block 111, and then tighten the pre-tightening bolt 280 on the base body 221 of the spring box base 220, so that the tightening requirement of the pre-tightening bolt 280 is 130N. -m .

[0082] After replacing the new stress spring 230 , the spring assembly 200 is placed in the accommodating cavity 131 of the limiting frame 130 again, and then under the action of the axial pressure plate 150 , the small elastic retaining ring 270 and the washer 260 are reinstalled on the small diameter section 212 of the spring assembly 200 .

[0083] The spring assembly 200 is taken out from the limiting frame 130 , and the large elastic retaining ring 240 and the stress pressing plate 250 are reinstalled 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 disassembled, inspected and repaired per month is 46, compared with the previous average of 34 per month, the repair rate is increased by 35%, about 552 spring assemblies are disassembled, inspected and repaired per year, and new products are replaced about 7 to 8 times per month, and the reuse rate of equipment spare parts is effectively improved.

[0086] The disassembly and assembly tool of the present application can effectively improve the quality and cycle of disassembly, inspection and repair of the spring group, reduce the equipment procurement cost, thereby improving the efficiency of disassembly, inspection and repair of the slider mechanism and reducing construction labor costs.

[0087] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A spring assembly quick disassembly and assembly tool, characterized in that: The disassembly and assembly tool (100) comprises: A fixed base (110), wherein a static clamping block (111) is provided on the fixed base (110); A movable clamping block (120), wherein the movable clamping block (120) is movably and fixedly connected to the fixed base (110), so that the lateral spacing between the movable clamping block (120) and the static clamping block (111) can be adjusted; A limiting frame (130), the limiting frame (130) being provided with a receiving cavity (131) with a top opening, one end of the receiving cavity (131) extending longitudinally and penetrating the limiting frame (130), the transverse dimension of the receiving cavity (131) being larger than the radial dimension of the small diameter section (212) of the spring group (200) and smaller than the radial dimension of the large diameter section (211) of the spring group (200), and both transverse ends of the limiting frame (130) being provided with limiting grooves (132) communicating with the receiving cavity (131) and capable of forming a stopper with the large diameter section (211) of the spring group (200); A longitudinal screw rod (140), wherein the longitudinal screw rod (140) is threadedly connected to a threaded hole at one longitudinal end of the limiting frame (130); An axial pressing plate (150), wherein the axial pressing plate (150) is disposed in the accommodating cavity (131), and the axial pressing plate (150) is fixedly connected to one end of the longitudinal screw rod (140); A first crank handle (160), the first crank handle (160) being arranged on one longitudinal side of the limiting frame (130), and the first crank handle (160) being fixedly connected to the other end of the longitudinal screw rod (140); A clamping plate (170), wherein the clamping plate (170) is arranged along the longitudinal direction, and the top end of the clamping plate (170) is vertically fixedly connected to the lower surface of the limiting frame (130).

2. A spring assembly quick disassembly and assembly tool according to claim 1, characterized in that: The fixed base (110) is provided with a transverse sliding groove (112) and a mounting block (113), and the bottom of the movable clamping block (120) is slidably connected in the transverse sliding groove (112); the movable clamping block (120) is arranged between the mounting block (113) and the static clamping block (111), and a transverse screw rod (114) is threadedly connected to the mounting block (113), one end of the transverse screw rod (114) is rotatably connected to the movable clamping block (120), and the other end of the transverse screw rod (114) is fixedly connected to the second crank handle (115).

3. A spring assembly quick disassembly and assembly tool according to claim 2, characterized in that: The groove width of the transverse sliding groove (112) is larger than the end size of the spring box base (220) and smaller than the column size of the spring box base (220).

4. A spring assembly quick disassembly and assembly tool according to claim 2, characterized in that: The fixed base (110) is provided with connecting ear plates (116) on both longitudinal sides.

5. The spring assembly quick disassembly and assembly tool according to claim 1, characterized in that: A pressure cover (180) is provided on the limiting frame (130), and plug plates (181) for inserting into the limiting groove (132) are provided at both lateral ends of the pressure cover (180), and the lateral spacing between the two plug plates (181) is greater than the radial dimension of the large diameter section (211) of the spring assembly (200).

6. A method for rapid maintenance of a spring assembly, the method using the rapid disassembly and assembly tool for a spring assembly according to any one of claims 1 to 6, characterized in that: The maintenance method comprises the following steps: S10: longitudinally placing the spring assembly (200) in the accommodating cavity (131) of the limiting frame (130), and making the large diameter section (211) of the spring assembly (200) face the limiting groove (132); S20: using a detection instrument on a longitudinal side of the limit frame (130) to detect whether the tension of the stress spring (230) meets the requirement; if not, executing S30; S30: firstly taking out the spring assembly (200) from the limiting frame (130), then removing the large elastic retaining ring (240) and the stress pressure plate (250) of the large diameter section (211) of the spring assembly (200) by using retaining ring pliers, and then placing the spring assembly (200) in the accommodating cavity (131) again; S40: longitudinally pressing the seat body (221) of the spring box base (220) through the axial pressure plate (150); S50: after the spring box base (220) is axially moved, the small elastic retaining ring (270) and the washer (260) of the small diameter section (212) of the spring assembly (200) are removed by using retaining ring pliers; S60: first inserting the end (223) of the spring box base (220) into the transverse slide groove (112) of the fixed base (110), and making the movable clamping block (120) and the static clamping block (111) clamp the column (222) of the fixed spring box base (220), and then tightening the pre-tightening bolt (280) on the base body (221) of the spring box base (220); S70: Replace the new stress spring (230), and under the action of the axial pressure plate (150), reinstall the small elastic retaining ring (270) and the washer (260) on the small diameter section (212) of the spring assembly (200); S80: Reinstall the large elastic retaining ring (240) and the stress pressure plate (250) on the large diameter section (211) of the spring assembly (200).

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