Spring box of sliding mechanism

Abstract

The utility model discloses a sliding mechanism spring box which comprises a sleeve, a spring guide rod in sliding fit in the sleeve and a spring installed in the sleeve, one end of the spring abuts against the bottom of the sleeve, the other end of the spring is connected with the first end of the spring guide rod, and the second end of the spring guide rod penetrates out of the bottom of the sleeve. The spring guide rod does not rotate circumferentially relative to the sleeve; the sleeve is installed in an installation hole of an upper frame of the sliding mechanism, a gap is formed between the outer wall of the sleeve and the hole wall of the installation hole, a limiting block is arranged on the outer wall of the sleeve, a protruding block is arranged on the hole wall of the installation hole, and the end face of the second end of the limiting block is attached to the end face of the inner side of the protruding block. The limiting blocks are arranged on the periphery of the sleeve, the protruding blocks matched with the limiting blocks are arranged in the installation holes, the spring box is installed in the installation holes and then rotated by a certain angle, the end faces of the limiting blocks and the end faces of the protruding blocks are attached to each other for supporting, the spring box can be detached and installed without detaching the sliding mechanism, the labor amount is effectively reduced, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to molten metal flow control technical field, specifically a sliding mechanism spring box. BACKGROUND

[0002] Molten metal flow control device is widely used in metallurgical industry, and the main structure of the control device is a sliding mechanism. A sliding plate in the sliding mechanism uses a spring box installed in the sliding plate frame to exert pressure, so that the upper and lower sliding plates generate face pressure to achieve sealing.

[0003] The existing spring box is inconvenient to disassemble, replace and maintain. The entire frame needs to be disassembled to perform the above operations on the spring box, which is labor-intensive and time-consuming. In addition, the existing spring box is prone to rotation after installation and requires additional positioning devices. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims to provide a sliding mechanism spring box that improves positioning effect and is convenient to disassemble and assemble.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a sliding mechanism spring box, comprising a sleeve, a spring guide rod slidingly fitted in the sleeve, and a spring installed in the sleeve, one end of the spring abutting against the bottom of the sleeve, the other end of the spring connected with the first end of the spring guide rod, and the second end of the spring guide rod passing out of the bottom of the sleeve.

[0006] The sleeve is installed in the mounting hole of the upper frame of the sliding mechanism, there is a gap between the outer wall of the sleeve and the hole wall of the mounting hole, a limiting block is arranged on the outer wall of the sleeve, a protrusion is arranged on the hole wall of the mounting hole, and the second end face of the limiting block is attached to the inner side end face of the protrusion.

[0007] A limiting structure is arranged between the spring guide rod and the sleeve, and the limiting structure limits the circumferential rotation of the spring guide rod relative to the sleeve.

[0008] A rotation-preventing connector is arranged on the second end of the spring guide rod, and the rotation-preventing connector is connected in the connecting groove of the roller support.

[0009] The above-mentioned sliding mechanism spring box has one limiting block distributed on the sleeve with an angle less than or equal to 180° in the circumferential direction, and one protrusion distributed in the mounting hole with an angle less than or equal to 180° in the circumferential direction. When the sleeve is installed in the mounting hole from the inner side of the upper frame of the sliding mechanism, the limiting block and the protrusion are staggered with each other. After the sleeve is installed in the mounting hole, the limiting block and the protrusion are aligned by rotating the sleeve.

[0010] The sum of the axial length of the limiting block and the axial length of the protrusion is less than or equal to the depth of the mounting hole; the outer side wall surface of the limiting block is in contact with the hole wall of the mounting hole, and the inner side wall surface of the protrusion is in contact with the outer side wall surface of the sleeve.

[0011] The outer side wall surface of the sleeve is provided with more than three limiting blocks at equal intervals, and a first guide groove is formed between adjacent two limiting blocks; the hole wall of the mounting hole is provided with more than three protrusions at equal intervals, and a second guide groove is formed between adjacent two protrusions; the width of the limiting block is less than or equal to the width of the second guide groove, and the width of the protrusion is less than or equal to the width of the first guide groove.

[0012] The limiting block and the protrusion are arranged along the axial direction of the sleeve.

[0013] The limiting structure comprises a positioning hole, the positioning hole is opened on the bottom of the sleeve, the cross-sectional shape of the second end of the spring guide rod matches the outer contour of the positioning hole, and the second end of the spring guide rod passes through the positioning hole.

[0014] At least a part of the hole wall of the positioning hole has a radial distance from the center of the positioning hole smaller than that of the remaining part of the hole wall.

[0015] The anti-rotation connector comprises a sliding block and a fixed head, the sliding block and the fixed head are coaxially and fixedly connected in sequence on the second end of the spring guide rod, the connecting groove on the roller support is a T-shaped groove, the sliding block is slidingly fitted in the slot of the T-shaped groove, the sliding surface of the sliding block is parallel to the groove wall of the T-shaped groove, and the fixed head is installed in the T-shaped groove.

[0016] The spring guide rod is coaxially installed in the spring, a blocking seat is fixedly connected to the first end of the spring guide rod, and one end of the spring abuts against the blocking seat; a clamping spring groove is formed in the side wall of the sleeve portion, an axle blocking ring is installed in the clamping spring groove, and a limiting ring is arranged between the axle blocking ring and the bottom of the sleeve.

[0017] A sealing cover is installed in the barrel mouth of the sleeve, a step is arranged on one side of the inner wall of the sleeve, the sealing cover is in contact with the step, and a hole blocking ring is installed on the other side of the inner wall of the sleeve.

[0018] The technical scheme of the utility model discloses has achieved the following beneficial technical effects:

[0019] By setting the limiting block around the sleeve, setting the convex block matched with the limiting block in the mounting hole, rotating a certain angle after the spring box is installed in the mounting hole, the end faces of the limiting block and the convex block are mutually adhered and supported, the spring box can be disassembled and installed without removing the sliding mechanism, quick maintenance and replacement are realized, the labor amount is greatly reduced and the operation efficiency is improved.

[0020] By setting the limiting structure and the anti-rotation connector, after the spring box is installed in the mounting hole and the spring guide rod is assembled and connected with the roller support, the anti-rotation connector is matched with the T-shaped groove on the roller support, the spring guide rod is prevented from rotating, the sleeve is prevented from rotating relative to the spring guide rod by the limiting structure, the sleeve cannot rotate in the mounting hole, after the whole structure is assembled, axial and circumferential locking are realized synchronously, the connecting stability and safety of the limiting block and the convex block are improved, and no additional anti-rotation structure is needed, and the structure design has great advantages in the aspects of dismounting efficiency, maintenance convenience and connecting stability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The utility model discloses a three -dimensional structure schematic diagram of sliding mechanism spring box;

[0022] Figure 2 The utility model discloses a cross section structure schematic diagram of sliding mechanism spring box;

[0023] Figure 3 The utility model discloses an explosion drawing of sliding mechanism spring box;

[0024] Figure 4 The utility model discloses a three -dimensional drawing of spring guide rod;

[0025] Figure 5 The utility model discloses a schematic diagram of sliding mechanism spring box and sliding mechanism upper frame assembly;

[0026] Figure 6 The utility model discloses a cross section schematic diagram of mounting hole.

[0027] The figure mark is shown as follows: 1 - sleeve;2 - spring guide rod;3 - spring;4 - stop seat;5 - sliding block;6 - fixed head;7 - limiting ring;8 - axle stop ring;9 - sealing cover;10 - hole stop ring;11 - positioning hole;12 - limiting block;13 - second guide groove;14 - section;15 - sliding mechanism upper frame;16 - roller support;17 - mounting hole;18 - convex block;19 - first guide groove. DETAILED DESCRIPTION

[0028] A kind of sliding mechanism spring box in the embodiment, as Figures 1-2As shown in the figure, it comprises a sleeve 1, a spring guide rod 2 slidingly fitted in the sleeve 1 and a spring 3 installed in the sleeve 1, the spring guide rod 2 is coaxially installed in the spring 3, a stop seat 4 is fixedly connected to the first end of the spring guide rod 2, one end of the spring 3 abuts against the stop seat 4, the other end of the spring 3 abuts against the bottom of the sleeve 1, and the second end of the spring guide rod 2 penetrates out of the bottom of the sleeve 1. Figure 5 As shown in the figure, the sleeve 1 is installed in the mounting hole 17 of the sliding mechanism upper frame 15, there is a gap between the outer wall of the sleeve 1 and the hole wall of the mounting hole 17, a limiting block 12 is arranged on the outer wall of the sleeve 1, a protrusion 18 is arranged on the hole wall of the mounting hole 17, and the second end face of the limiting block 12 abuts against the inner side end face of the protrusion 18; a limiting structure is arranged between the spring guide rod 2 and the sleeve 1, which limits the circumferential rotation of the spring guide rod 2 relative to the sleeve 1; a rotation prevention connector is arranged on the end of the second end of the spring guide rod 2, and the rotation prevention connector is connected in the connecting groove of the roller support 16.

[0029] As shown in the figure, Figure 2 and Figure 4 the spring guide rod 2 is provided with a clamping spring groove on the side wall of the part extending out of the sleeve 1, an axle stop ring 8 is installed in the clamping spring groove, and a limiting ring 7 is arranged between the axle stop ring 8 and the bottom of the sleeve 1. By arranging the axle stop ring 8 and the limiting ring 7, the pre-tightening pressure of the spring is ensured.

[0030] When the limiting block 12 and the protrusion 18 are one, the distribution angle of the limiting block 12 and the protrusion 18 in the circumferential direction is less than or equal to 180°, which ensures that when the sleeve 1 is loaded into the mounting hole 17 from the inside of the sliding mechanism upper frame 15, the limiting block 12 and the protrusion 18 can be staggered without interference, and when the sleeve 1 is loaded into the mounting hole 17, that is, the end faces of the limiting block 12 and the protrusion 18 are flush, rotating the sleeve 1 to align the limiting block 12 and the protrusion 18 to achieve axial support.

[0031] As shown in the figure, Figure 1 and Figure 6 the sum of the axial length of the limiting block 12 and the axial length of the protrusion 18 is less than or equal to the depth of the mounting hole 17, which ensures that the spring box can be completely loaded into the mounting hole 17; the outer side wall surface of the limiting block 12 abuts against the hole wall of the mounting hole 17, and the inner side wall surface of the protrusion 18 abuts against the outer side wall surface of the sleeve 1.

[0032] In this embodiment, the outer side wall surface of the sleeve 1 is provided with three or more than three limiting blocks 12 at equal intervals, and a first guide groove 19 is formed between two adjacent limiting blocks 12. The hole wall of the mounting hole 17 is provided with three or more than three protrusions 18 at equal intervals, and a second guide groove 13 is formed between two adjacent protrusions 18. The limiting block 12 and the protrusion 18 are arranged along the axis direction of the sleeve 1. The width of the limiting block 12 is less than or equal to the width of the second guide groove 13, and the width of the protrusion 18 is less than or equal to the width of the first guide groove 19. When the sleeve 1 is installed in the mounting hole 17, the limiting block 12 enters the second guide groove 13, and the protrusion 18 enters the first guide groove 19, until the limiting block 12 passes through the second guide groove 13, and then the sleeve 1 is rotated by a certain angle, so that the end surface of the limiting block 12 is aligned and fitted with the end surface of the protrusion 18, thereby achieving axial fixation.

[0033] As shown in Figures 2-3 The limiting structure includes a positioning hole 11, which is formed on the bottom of the sleeve 1. The cross-sectional shape of the second end of the spring guide rod 2 matches the outer contour of the positioning hole 11. The second end of the spring guide rod 2 passes through the positioning hole 11. At least a part of the hole wall of the positioning hole 11 has a radial distance from the center of the positioning hole 11 that is less than the radial distance of the remaining part of the hole wall from the center of the positioning hole 11. Specifically, the positioning hole 11 adopts a non-circular shape, such as a rectangle, a polygonal ellipse, etc., so that the spring guide rod 2 cannot rotate alone relative to the positioning hole 11. In this embodiment, the shape of the positioning hole 11 is a square concentrically arranged with the sleeve 1. The four corners of the square are rounded, and the radius of the round corner is equal to the radius of the spring guide rod 2. A cutting surface 14 is formed on the side wall of the spring guide rod 2 from the end of the second end to the middle. Four cutting surfaces 14 are arranged at equal intervals around the spring guide rod 2. The opposite cutting surfaces 14 are parallel to each other, so as to match the hole wall of the positioning hole 11. The spring guide rod 2 can be stretched and contracted in the positioning hole 11, but cannot rotate alone.

[0034] As shown in Figure 1 and Figure 4 The anti-rotation connector includes a sliding block 5 and a fixed head 6, which are coaxially and sequentially fixedly connected to the second end of the spring guide rod 2. The connecting groove on the roller support 16 is a T-shaped groove. The sliding block 5 is slidingly fitted in the slot of the T-shaped groove. The sliding surface of the sliding block 5 is parallel to the groove wall of the T-shaped groove. The fixed head 6 is installed inside the T-shaped groove. The anti-rotation connector can be integrally formed. That is, two planar cutting grooves are cut on the two side walls of the spring guide rod 2 near the second end, forming a T-shaped head matching the T-shaped groove. In actual use, the width of the T-shaped head is 1mm smaller than the T-shaped groove, which ensures smooth sliding while avoiding rotation.

[0035] like Figure 2 As shown, a sealing cap 9 is installed inside the opening of the sleeve 1. A step is provided on one side of the sealing cap 9 on the inner wall of the sleeve 1. The sealing cap 9 is attached to the step. A retaining ring 10 for holes is installed on the other side of the sealing cap 9 on the inner wall of the sleeve 1. The sealing cap 9 is used to ensure that the internal structure of the sleeve 1 is not affected by the external environment and to maintain cleanliness.

[0036] In some other embodiments, the limiting structure can also be set in other locations, such as between the stop 4 and the inner wall of the sleeve 1. Specifically, the inner wall of the sleeve 1 is shaped to limit rotation, and the stop 4 is shaped to match the inner wall of the sleeve 1, which can also limit the rotation of the spring guide rod 2. However, the processing difficulty will be increased to some extent.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A slide mechanism spring box, characterized by, The spring guide rod (2) is slidably fitted in the sleeve (1), and the spring (3) is installed in the sleeve (1), one end of the spring (3) abuts against the bottom of the sleeve (1), and the other end of the spring (3) is connected with the first end of the spring guide rod (2), and the second end of the spring guide rod (2) penetrates out of the bottom of the sleeve (1); The sleeve (1) is installed in the mounting hole (17) of the sliding mechanism upper frame (15), there is a gap between the outer wall of the sleeve (1) and the hole wall of the mounting hole (17), a limiting block (12) is arranged on the outer wall of the sleeve (1), and a protruding block (18) is arranged on the hole wall of the mounting hole (17), the second end face of the limiting block (12) is abutted on the inner side end face of the protruding block (18); A limiting structure is arranged between the spring guide rod (2) and the sleeve (1), and the limiting structure limits the circumferential rotation of the spring guide rod (2) relative to the sleeve (1); A rotation prevention connector is arranged on the second end of the spring guide rod (2), and the rotation prevention connector is connected in the connecting groove of the roller support (16).

2. A slide mechanism spring box according to claim 1, wherein One of the limiting blocks (12) is circumferentially distributed on the sleeve (1) at an angle less than or equal to 180°, and one of the protruding blocks (18) is circumferentially distributed in the mounting hole (17) at an angle less than or equal to 180°; when the sleeve (1) is installed in the mounting hole (17) from the inner side of the sliding mechanism upper frame (15), the limiting block (12) and the protruding block (18) are staggered with each other; after the sleeve (1) is installed in the mounting hole (17), the sleeve (1) is rotated to align the limiting block (12) and the protruding block (18) with each other.

3. A slide mechanism spring box according to claim 1, wherein The sum of the axial length of the limiting block (12) and the axial length of the protruding block (18) is less than or equal to the depth of the mounting hole (17); the outer side wall surface of the limiting block (12) is abutted on the hole wall of the mounting hole (17), and the inner side wall surface of the protruding block (18) is abutted on the outer side wall surface of the sleeve (1).

4. A slide mechanism spring box according to any one of claims 1 to 3, characterized in that More than three limiting blocks (12) are equidistantly arranged on the outer side wall surface of the sleeve (1), a first guide groove (19) is formed between two adjacent limiting blocks (12), more than three protruding blocks (18) are equidistantly arranged on the hole wall of the mounting hole (17), a second guide groove (13) is formed between two adjacent protruding blocks (18); the width of the limiting block (12) is less than or equal to the width of the second guide groove (13), and the width of the protruding block (18) is less than or equal to the width of the first guide groove (19).

5. A slide mechanism spring box according to claim 4, wherein The limiting block (12) and the protruding block (18) are arranged along the axis direction of the sleeve (1).

6. A slide mechanism spring box according to claim 1, wherein The limiting structure comprises a positioning hole (11) which is arranged on the bottom of the sleeve (1), the cross-sectional shape of the second end of the spring guide rod (2) matches the outer contour of the positioning hole (11), and the second end of the spring guide rod (2) penetrates through the positioning hole (11).

7. A slide mechanism spring box according to claim 6, wherein The positioning hole (11) has at least one part of the hole wall with a radial distance from the center of the positioning hole (11) smaller than the radial distance of the remaining part of the hole wall from the center of the positioning hole (11).

8. The slide mechanism spring box of claim 1, wherein The anti-rotation connector comprises a sliding block (5) and a fixed head (6), which are coaxially and fixedly connected in sequence on the second end of the spring guide rod (2), the connecting groove on the roller support (16) is a T-shaped groove, the sliding block (5) is slidingly fitted in the notch of the T-shaped groove, the sliding surface of the sliding block (5) is parallel to the groove wall of the T-shaped groove, and the fixed head (6) is installed inside the T-shaped groove.

9. The slide mechanism spring box of claim 1, wherein The spring guide rod (2) is coaxially installed in the spring (3), a stop seat (4) is fixedly connected to the first end of the spring guide rod (2), and one end of the spring (3) abuts against the stop seat (4); a clamping spring groove is formed in the side wall of the part of the sleeve (1) that protrudes out, an axle stop ring (8) is installed in the clamping spring groove, and a limiting ring (7) is arranged between the axle stop ring (8) and the bottom of the sleeve (1).

10. The slide mechanism spring box of claim 1, wherein A sealing cover (9) is installed in the barrel opening of the sleeve (1), a step is arranged on one side of the inner wall of the sleeve (1) and located on the sealing cover (9), the sealing cover (9) is attached to the step, and a hole stop ring (10) is installed on the other side of the inner wall of the sleeve (1) and located on the sealing cover (9).

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