AGC oil cylinder built-in magnetic grid type displacement sensor device

Abstract

The utility model discloses an AGC oil cylinder built-in magnetic grid type displacement sensor device, which comprises a dismounting threaded seat, a magnetic head gland, a magnetic head mounting seat, a guide device, a locking rod assembly and a baffle plate, the guide device is positioned in a cavity in the middle of an AGC oil cylinder body and a piston rod, the guide device is fixed on the cylinder body, a cavity is arranged in the middle of the guide device, and the locking rod assembly is arranged in the cavity. A threaded hole is formed in the circumferential direction, close to the bottom, of the guide device, one end of the locking rod assembly is connected with the guide device through the threaded hole, the other end of the locking rod assembly is fixed to one side of the outer portion of an AGC oil cylinder body, and the magnetic head installation base is perpendicular to the locking rod assembly. The magnetic head installation support is of a split structure and is divided into the magnetic head installation base and the baffle, the built-in magnetic grid type sensor can be installed and disassembled only by disassembling part of parts, and the problem that the built-in magnetic grid type sensor can be installed and disassembled only by pulling out all AGC oil cylinders from a production line is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinders, and in particular relates to an AGC oil cylinder built-in magnetic grating displacement sensor device. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion).

[0003] The AGC cylinder is the core of the rolling mill. The built-in sensor is used to feedback the displacement signal of the AGC cylinder. However, since the traditional AGC cylinder and its internal sensor are of an integral structure, once a problem occurs with the sensor, the entire AGC cylinder needs to be replaced. The replacement and adjustment require downtime of 2 to 3 days, which makes its maintenance complicated and causes great economic losses, affecting its actual convenience of use. Summary of the Invention

[0004] The present invention aims to solve the problem that the existing technology requires a long time for maintenance and replacement, and proposes the following technical solutions:

[0005] A magnetic grating displacement sensor device with a built-in AGC oil cylinder includes: a disassembly threaded seat, a magnetic head pressure cover, a magnetic head mounting seat, a guide device, a locking rod assembly, and a baffle. The guide device is located in the AGC oil cylinder body and the middle cavity of the piston rod, and the guide device is fixed to the cylinder body. A cavity is provided in the middle of the guide device. The magnetic head mounting seat is located in the middle cavity of the guide device, and the magnetic head mounting seat is located between the magnetic head pressure cover and the bottom surface of the guide device. A cavity is provided in the middle of the magnetic head mounting seat. The magnetic head pressure cover is provided with two groups of different mounting screw holes. The magnetic head pressure cover is connected to the bottom surface of the guide device through a group of the mounting screw holes. The magnetic head of the magnetic grating displacement sensor is fixed, and the head pressure cover is fixed to the magnetic head of the magnetic grating displacement sensor, and the head pressure cover extends into the middle cavity of the head mounting seat, and the head pressure cover is fixed to the top of the head mounting seat through another group of the mounting screw holes and the disassembly threaded seat. The baffle is located on the bottom surface of the guide device, and the guide device is provided with a threaded hole in the circumferential direction near the bottom. One end of the locking rod assembly is connected to the guide device through the threaded hole, and the other end of the locking rod assembly is fixed to the outer side of the AGC cylinder body. The head mounting seat and the locking rod assembly are perpendicular to each other.

[0006] As a preferred embodiment of the above technical solution, the magnetic head mounting support of the magnetic grating displacement sensor is a split structure, which includes the magnetic head mounting support and the baffle.

[0007] As a preferred embodiment of the above technical solution, a conical annular groove is provided in the circumferential direction of the head mounting seat near the bottom, and a plurality of ventilation holes are provided in the central plane of the conical annular groove, and the ventilation holes and the central plane of the locking rod assembly are located in the same horizontal plane.

[0008] As a preferred embodiment of the above technical solution, several positioning frames are installed on the lower end surface of the disassembly and assembly threaded seat, the positioning frame is L-shaped, and the ratio of the length of the vertical part to the length of the horizontal part is 1:1, and the ratio of the height of the vertical part to the height of the horizontal part is 2:1, and the upper end of the head pressure cover is provided with several positioning grooves, the number of the positioning grooves is consistent with the number of the positioning frames, and the positioning frames are plugged into the positioning grooves, the positioning groove is L-shaped, and the length of the plug-in interface at the upper end of the positioning groove is consistent with the length of the lower end surface of the positioning frame, and the ratio of the length of the horizontal part of the lower half of the positioning groove to the length of the horizontal part of the upper half is 3:2, and the overall depth of the positioning groove is consistent with the overall height of the positioning frame.

[0009] As a preferred embodiment of the above technical solution, the locking rod assembly includes a ball head, an intermediate tube, and a joint body. The outer circle of the ball head is provided with an external thread, and the ball head is threadedly connected to the guide device through the external thread. The end of the ball head close to the magnetic head mounting seat is a spherical structure, and a cavity is provided in the middle of the spherical surface of the ball head. The joint body is located on the outer side of the AGC cylinder body, and an oil port thread is opened in the joint body. The oil port thread is used to install an external joint. The ball head and the joint body are connected through the intermediate tube, and the ball head, the intermediate tube and the joint body are an integrated structure.

[0010] As a preferred embodiment of the above technical solution, a connected cavity is formed inside the magnetic head mounting seat and in the middle of the locking rod assembly.

[0011] The beneficial effects of the utility model are:

[0012] (1) The magnetic head mounting bracket uses a split structure, which is divided into a magnetic head mounting bracket and a baffle. The built-in magnetic grating sensor can be installed and removed by simply disassembling some parts, avoiding the problem of having to completely pull out the AGC cylinder from the production line before installing and removing the built-in magnetic grating sensor;

[0013] (2) The middle part of the magnetic head mounting seat and the locking rod assembly is raised to form a connected cavity. The gas is connected from the joint body of the locking rod assembly on the outside of the cylinder body and ventilation is maintained at all times. Foreign matter and dirt from the outside cannot enter the magnetic grating displacement sensor, which plays a role in dust and water prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a cross-sectional view of the overall structure;

[0015] Figure 2 Shown is a perspective view of the blowing structure;

[0016] Figure 3 Shown is a cross-sectional view of the blowing connection;

[0017] Figure 4 Shown is a perspective view of the positioning method.

[0018] In the figure: 1. Disassembly and assembly of threaded seat; 2. Head cover; 3. Head mounting seat; 4. Guide device; 5. Locking rod assembly; 51. Ball head; 52. Connector body; 53. Intermediate tube; 6. Baffle; 7. Conical ring groove; 71. Ventilation hole; 8. Mounting screw hole; 9. Positioning frame; 91. Positioning groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Example

[0020] Figure 1 - Figure 4 What is shown is a structural schematic diagram of a specific embodiment of the utility model. Figure 1 In the invention, a magnetic grating displacement sensor device with a built-in AGC oil cylinder comprises: a disassembly threaded seat 1, a magnetic head pressure cover 2, a magnetic head mounting seat 3, a guide device 4, a locking rod assembly 5, and a baffle 6. The guide device 4 is located in the cavity in the middle of the AGC oil cylinder body and the piston rod, and the guide device 4 is fixed to the cylinder body. A cavity is provided in the middle of the guide device 4. The magnetic head mounting seat 3 is located in the cavity in the middle of the guide device 4, and the magnetic head mounting seat 3 is located between the magnetic head pressure cover 2 and the bottom surface of the guide device 4. A cavity is provided in the middle of the magnetic head mounting seat 3. The magnetic head pressure cover 2 is provided with two groups of different mounting screw holes 8. The magnetic head pressure cover 2 is fixed with a group of mounting screw holes. The mounting screw hole 8 is fixed to the magnetic head of the magnetic grating displacement sensor, the magnetic head cover 2 is fixed to the magnetic head of the magnetic grating displacement sensor, and the magnetic head cover 2 extends into the middle cavity of the magnetic head mounting seat 3, and the magnetic head cover 2 is fixed to the top of the magnetic head mounting seat 3 through another set of mounting screw holes 8 and the disassembly threaded seat 1. The baffle 6 is located on the bottom surface of the guide device 4. The guide device 4 is provided with a threaded hole in the circumferential direction near the bottom. One end of the locking rod assembly 5 is connected to the guide device 4 through the threaded hole, and the other end of the locking rod assembly 5 is fixed to the outside side of the AGC cylinder body. The magnetic head mounting seat 3 and the locking rod assembly 5 are perpendicular to each other.

[0021] After the locking rod assembly 5 is unscrewed a certain distance away from the head mounting base 3, the head mounting base 3 is in a free state capable of moving up and down, and with the support of the mounting screw hole 8 on the disassembly threaded base 1, the head mounting base 3, the head pressure cover 2 and the magnetic grating displacement sensor head can be installed and removed from the top of the AGC cylinder through the disassembly threaded base 1 using a disassembly tool, and the supporting baffle 6 is opened. The head mounting base 3, the head pressure cover 2 and the magnetic grating displacement sensor can be installed and removed from the top of the AGC cylinder, thereby using a split structure through the head mounting support, which is divided into the head mounting base 3 and the baffle 6. Only some parts need to be disassembled to complete the installation and disassembly of the built-in magnetic grating sensor, avoiding the problem that the AGC cylinder must be completely pulled out from the production line before the built-in magnetic grating sensor can be installed and disassembled.

[0022] Figure 1 In the figure, the magnetic head mounting support of the magnetic grating displacement sensor is a split structure, which includes a magnetic head mounting base 3 and a baffle 6.

[0023] By opening the supporting baffle 6, the head mounting base 3, the head pressure cover 2 and the magnetic grating displacement sensor can be installed and disassembled from the bottom of the AGC cylinder. The head mounting support adopts a split structure, which is divided into the head mounting base 3 and the baffle 6, which is more conducive to the disassembly and adjustment of parts.

[0024] Figure 1 and Figure 3 In the embodiment, a conical annular groove 7 is provided in the circumferential direction near the bottom of the head mounting base 3 , and a plurality of ventilation holes 71 are provided in the central plane of the conical annular groove 7 , and the ventilation holes 71 and the central plane of the locking rod assembly 5 are located in the same horizontal plane.

[0025] The locking rod assembly 5 includes a ball head 51, an intermediate tube 53, and a joint body 52. ​​The outer circle of the ball head 51 is provided with an external thread, and the ball head 51 is threadedly connected to the guide device 4 through the external thread. The end of the ball head 51 close to the head mounting seat 3 is a spherical structure, and a cavity is provided in the middle of the spherical surface of the ball head 51. The joint body 52 is located on the outer side of the AGC cylinder body, and an oil port thread is provided in the joint body 52. ​​The oil port thread is used to install an external joint. The ball head 51 and the joint body 52 are connected through the intermediate tube 53, and the ball head 51, the intermediate tube 53 and the joint body 52 are an integrated structure.

[0026] The interior of the magnetic head mounting base 3 and the middle portion of the locking rod assembly 5 form a connected cavity.

[0027] The gas enters from the oil port of the joint body 52, passes through the central cavity of the intermediate tube 53, the central cavity of the ball head 51, and several ventilation holes 71 on the central plane of the conical ring groove 7 of the head mounting seat 3, and finally enters the central cavity of the head mounting seat 3, continuously blowing air to the magnetic grating displacement sensor, so that external foreign matter and dirt cannot enter.

[0028] At the same time, the locking rod assembly 5 is adjusted to its position through the outer circular thread of the ball head 51. Screwing into the thread will move toward the direction of the head mounting seat 3, that is, the inside of the cylinder. After the locking rod assembly 5 is screwed into the thread in the direction of the head mounting seat 3 for a certain distance, it contacts the conical ring groove 7 of the head mounting seat 3. The spherical surface of the ball head 51 will exert a downward force on the cone 7 surface of the conical ring groove of the head mounting seat 3, thereby pressing the head mounting seat 3. Specifically, the head mounting seat 3 requires the guide device 4, the locking rod assembly 5 and the baffle 6 to be completely fixed. The magnetic grating of the magnetic grating displacement sensor is fixed to the piston rod through the connecting rod. When the AGC cylinder is working, the piston rod reciprocates in the axial direction, driving the magnetic grating to move, and the magnetic head is fixed to the head mounting seat 3, thereby realizing displacement detection of the magnetic grating displacement sensor.

[0029] Furthermore, the locking rod assembly 5 is adjusted in position through the external thread of the ball head 51. Unscrewing the thread will move in the direction away from the head mounting seat 3, that is, in the direction of the outside of the cylinder. After the locking rod assembly 5 is unscrewed a certain distance away from the head mounting seat 3, the head mounting seat 3 is in a free state capable of reciprocating in the axial direction. The disassembly threaded seat 1 is provided with a threaded hole for lifting. The head mounting seat 3, the head gland 2 and the magnetic grating displacement sensor can be installed and disassembled from the top of the AGC cylinder through the disassembly threaded seat 1 using a disassembly tool.

[0030] Figure 4 In the figure, several positioning frames 9 are installed on the lower end surface of the disassembly and assembly threaded seat 1, and the positioning frames 9 are L-shaped. The length of the vertical part and the length of the horizontal part are in the ratio of 1:1, and the height of the vertical part and the height of the horizontal part are in the ratio of 2:1. The upper end of the head cover 2 is provided with several positioning grooves 91. The number of the positioning grooves 91 is the same as that of the positioning frames 9, and the positioning frames 9 are plugged into the positioning grooves 91. The positioning grooves 91 are L-shaped, and the length of the upper end plug-in interface of the positioning grooves 91 is consistent with the length of the lower end surface of the positioning frame 9, and the ratio of the length of the lower half horizontal part of the positioning groove 91 to the length of the upper half horizontal part is 3:2, and the overall depth of the positioning groove 91 is consistent with the overall height of the positioning frame 9.

[0031] When positioning and fastening the head cover 2 and the disassembly threaded seat 1, first insert the positioning frame 9 into the positioning groove 91, then rotate the head cover 2 to make the positioning frame 9 and the positioning groove 91 rotate relative to each other. When the positioning frame 9 is completely rotated into the positioning groove 91, the mounting screw holes 8 on both sides are connected, and then the outer bolts are used for fastening. Therefore, the lateral fastening of the outer bolts is combined with the lateral fastening of the positioning frame 9 and the positioning groove 91 to further improve the stability and accuracy of the connection between the disassembly threaded seat 1 and the head cover 2.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. An AGC oil cylinder built-in magnetic grating displacement sensor device, characterized in that: include: The threaded seat (1), the magnetic head cover (2), the magnetic head mounting seat (3), the guide device (4), the locking rod assembly (5), and the baffle (6) are disassembled and assembled. The guide device (4) is located in the middle cavity of the AGC cylinder body and the piston rod, and the guide device (4) is fixed on the cylinder body. A cavity is provided in the middle of the guide device (4). The magnetic head mounting seat (3) is located in the middle cavity of the guide device (4), and the magnetic head mounting seat (3) is located between the magnetic head cover (2) and the bottom surface of the guide device (4). A cavity is provided in the middle of the magnetic head mounting seat (3). The magnetic head cover (2) is provided with two groups of different mounting screw holes (8). The magnetic head cover (2) is connected to the magnetic grating displacement sensor through a group of the mounting screw holes (8). The magnetic head of the sensor is fixed, the magnetic head cover (2) is fixed to the magnetic head of the magnetic grating displacement sensor, and the magnetic head cover (2) extends into the middle cavity of the magnetic head mounting seat (3), and the magnetic head cover (2) is fixed to the top of the magnetic head mounting seat (3) through another group of the mounting screw holes (8) and the disassembly threaded seat (1), the baffle (6) is located on the bottom surface of the guide device (4), and the guide device (4) is provided with a threaded hole in the circumferential direction near the bottom, one end of the locking rod assembly (5) is connected to the guide device (4) through the threaded hole, and the other end of the locking rod assembly (5) is fixed to the outside side of the AGC cylinder body, and the magnetic head mounting seat (3) and the locking rod assembly (5) are perpendicular to each other.

2. The AGC oil cylinder built-in magnetic grating displacement sensor device according to claim 1, characterized in that: The magnetic head mounting support of the magnetic grating displacement sensor is a split structure, which comprises the magnetic head mounting support (3) and the baffle (6).

3. The AGC oil cylinder built-in magnetic grating displacement sensor device according to claim 1, characterized in that: The magnetic head mounting seat (3) is provided with a conical annular groove (7) in the circumferential direction near the bottom, and a plurality of ventilation holes (71) are provided on the central plane of the conical annular groove (7), and the ventilation holes (71) and the central plane of the locking rod assembly (5) are located in the same horizontal plane.

4. The AGC oil cylinder built-in magnetic grating displacement sensor device according to claim 1, characterized in that: A plurality of positioning frames (9) are installed on the lower end surface of the disassembly threaded seat (1), and the positioning frame (9) is L-shaped, and the ratio of the length of the vertical part to the length of the horizontal part is 1:1, and the ratio of the height of the vertical part to the height of the horizontal part is 2:

1. The upper end of the magnetic head cover (2) is provided with a plurality of positioning grooves (91), and the number of the positioning grooves (91) is consistent with that of the positioning frames (9), and the positioning frames (9) are plugged into the positioning grooves (91). The positioning grooves (91) are L-shaped, and the length of the upper end plug-in interface of the positioning grooves (91) is consistent with the length of the lower end surface of the positioning frame (9), and the ratio of the length of the lower half horizontal part of the positioning groove (91) to the length of the upper half horizontal part is 3:2, and the overall depth of the positioning groove (91) is consistent with the overall height of the positioning frame (9).

5. The AGC oil cylinder built-in magnetic grating displacement sensor device according to claim 1, characterized in that: The locking rod assembly (5) includes a ball head (51), an intermediate tube (53), and a joint body (52). The outer circle of the ball head (51) is provided with an external thread, and the ball head (51) is threadedly connected to the guide device (4) through the external thread. The end of the ball head (51) close to the magnetic head mounting seat (3) is a spherical structure, and a cavity is provided in the middle of the spherical surface of the ball head (51). The joint body (52) is located on the outer side of the AGC cylinder body, and an oil port thread is provided in the joint body (52). The oil port thread is used to install an external joint. The ball head (51) and the joint body (52) are connected through the intermediate tube (53), and the ball head (51), the intermediate tube (53) and the joint body (52) are an integrated structure.

6. The AGC oil cylinder built-in magnetic grating displacement sensor device according to claim 1, characterized in that: The interior of the magnetic head mounting seat (3) and the middle of the locking rod assembly (5) form a connected cavity.

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