Valve grinding device

Abstract

The utility model discloses a valve grinding device, which relates to the field of valve grinding technology, including a driving mechanism, a transmission mechanism, a first output shaft and a second output shaft, and a grinding piece can be installed on the first output shaft and the second output shaft; wherein, the first output shaft and the second output shaft are connected by the transmission mechanism, the driving mechanism can drive the first output shaft to rotate, so that the grinding piece installed on the first output shaft grinds the conical grinding surface of the valve, and the driving mechanism can drive the second output shaft to rotate and revolve around the revolution axis, so that the grinding piece installed on the second output shaft grinds the plane grinding surface of the valve. The utility model can realize dual-axis output, grind the plane sealing surface and the conical sealing surface of the valve respectively, and can better meet the grinding requirements of the plane sealing surface and the conical sealing surface.

Description

Technical Field

[0001] The utility model relates to the technical field of valve grinding, in particular to a valve grinding device. Background Art

[0002] In the power, petrochemical and other industries, it is necessary to grind the flat sealing surfaces and conical sealing surfaces of valves during maintenance work. The grinding workload is large and the precision requirements are high. The grinding of flat sealing surfaces requires high flatness, and the grinding of conical sealing surfaces requires high coaxiality. Currently, most valve grinders are portable valve grinders, which are only provided with an output shaft, which is connected to the grinding disc and is used for grinding both flat sealing surfaces and conical sealing surfaces. This grinding method is difficult to meet the grinding requirements of both flat sealing surfaces and conical sealing surfaces at the same time.

[0003] Therefore, it is urgent to provide a valve grinding device to solve the above problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a valve grinding device to solve the problems existing in the above-mentioned prior art, to achieve dual-axis output, to grind the flat sealing surface and the conical sealing surface of the valve respectively, and to better meet the grinding requirements of the flat sealing surface and the conical sealing surface.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a valve grinding device, comprising a driving mechanism, a transmission mechanism, a first output shaft and a second output shaft, wherein a grinding piece can be installed on the first output shaft and the second output shaft; wherein the first output shaft and the second output shaft are connected through the transmission mechanism, the driving mechanism can drive the first output shaft to rotate, so that the grinding piece installed on the first output shaft grinds the conical grinding surface of the valve, and the driving mechanism can drive the second output shaft to rotate and revolve around the revolution axis, so that the grinding piece installed on the second output shaft grinds the flat grinding surface of the valve.

[0007] Preferably, the driving mechanism is a servo motor, and the output shaft of the servo motor can be connected to the first output shaft.

[0008] Preferably, a reducer is also provided on the output shaft of the servo motor.

[0009] Preferably, the first output shaft is coaxially arranged with the output shaft of the driving mechanism, and the second output shaft is parallel to the first output shaft.

[0010] Preferably, the transmission mechanism is a gear transmission mechanism, which is installed in a gear box, the first output shaft and the second output shaft are both rotatably installed in the gear box, and the bottoms of the first output shaft and the second output shaft extend out of the gear box.

[0011] Preferably, the gear transmission mechanism includes a first autorotating gear, a first revolving gear, a second autorotating gear and a second revolving gear, the first autorotating gear and the first revolving gear are sequentially installed on the first output shaft along the axial direction of the first output shaft; the second autorotating gear is rotatably installed on the gear box and meshed with the first autorotating gear, and the second autorotating gear is connected to the top of the second output shaft through a universal joint; the second revolving gear is rotatably installed on the gear box and meshed with the first revolving gear, and the second output shaft is rotatably installed on the second revolving gear and is eccentrically arranged with the second revolving gear.

[0012] Preferably, a first connecting shaft is coaxially mounted on one end of the first output shaft extending out of the gear box, and the first connecting shaft is used to mount the grinding member; wherein the first connecting shaft is mounted in the first output shaft through a limiting mechanism, and the limiting mechanism can limit the relative rotation of the first connecting shaft and the first output shaft, and can enable the first connecting shaft to move along the axial direction of the first output shaft, and an elastic element is arranged between the top of the first connecting shaft and the first output shaft;

[0013] A second connecting shaft is coaxially mounted on one end of the second output shaft extending out of the gear box, and the second connecting shaft is used to mount the grinding member; wherein the second connecting shaft is mounted in the second output shaft via a limiting mechanism, and the limiting mechanism can limit the relative rotation of the second connecting shaft and the second output shaft, and can enable the second connecting shaft to move axially along the second output shaft, and an elastic element is arranged between the top of the second connecting shaft and the second output shaft.

[0014] Preferably, a connecting mechanism is further provided on the gear box, and the connecting mechanism is used to connect with an actuator so that the actuator can drive the valve grinding device to move.

[0015] Preferably, the second self-rotating gear is rotationally connected to the gear box via a cam bearing; wherein the shank of the cam bearing is fixed to the upper cover plate of the gear box, and the outer ring of the cam bearing is installed in the inner hole of the second self-rotating gear.

[0016] Preferably, the second output shaft is rotatably connected to the top of the second revolving gear via a second turntable bearing, and the second turntable bearing and the second revolving gear are eccentrically arranged;

[0017] A gear seat ring is coaxially mounted on the bottom of the second revolving gear, and the gear seat ring is rotatably mounted on the lower cover plate of the gear box through a first turntable bearing.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The utility model is provided with a first output shaft and a second output shaft, and the first output shaft and the second output shaft are connected through a transmission mechanism. The driving mechanism can drive the first output shaft to rotate, so that the grinding piece installed on the first output shaft grinds the conical grinding surface of the valve, and when the first output shaft rotates, it can drive the second output shaft to rotate and revolve around the revolution axis through the transmission mechanism, so that the grinding piece installed on the second output shaft grinds the plane grinding surface of the valve, so that the valve grinding device realizes dual-axis output, grinds the plane sealing surface and the conical sealing surface of the valve respectively, and can better meet the grinding requirements of the plane sealing surface and the conical sealing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of a valve grinding device from a first angle in an embodiment of the utility model;

[0022] Figure 2 A second angle schematic diagram of the valve grinding device in the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the valve grinding device from a third angle in an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the valve grinding device in the embodiment of the utility model after the gear box is removed;

[0025] Figure 5 for Figure 4 Side view of the middle valve grinding device;

[0026] Figure 6 for Figure 5 AA section view;

[0027] Figure 7 It is a schematic diagram of the connection between the universal joint and the second output shaft in the embodiment of the utility model.

[0028] In the figure: 1-servo motor, 2-planetary reducer, 3-transition ring, 401-gearbox housing, 402-upper cover, 403-lower cover, 404-cam bearing, 405-first turntable bearing, 406-first self-rotating gear, 407-second self-rotating gear, 408-first revolving gear, 409-second revolving gear, 410-sleeve, 411-deep groove ball bearing, 412-universal joint, 4121-input flange, 4122-first linear cross roller linear bearing, 4123-intermediate section, 4124-second linear cross roller linear bearing, 413-second turntable bearing, 414-gear seat ring, 5-first output shaft, 6-second output shaft, 7-connecting mechanism, 8-first connecting shaft, 9-second connecting shaft, 10-spring, 11-limit key. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The purpose of the utility model is to provide a valve grinding device to solve the problems existing in the above-mentioned prior art, to achieve dual-axis output, to grind the flat sealing surface and the conical sealing surface of the valve respectively, and to better meet the grinding requirements of the flat sealing surface and the conical sealing surface.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Embodiment 1

[0033] like Figure 1-Figure 7 As shown, a valve grinding device is provided in this embodiment, which mainly includes a driving mechanism, a transmission mechanism, a first output shaft 5 and a second output shaft 6, and a grinding piece can be installed on the first output shaft 5 and the second output shaft 6, wherein the grinding piece usually adopts a grinding disk, which is a mature existing technology in this field and will not be described in detail in this embodiment; in this embodiment, the first output shaft 5 and the second output shaft 6 are connected through the transmission mechanism, and the driving mechanism can drive the first output shaft 5 to rotate so that the grinding piece installed on the first output shaft 5 grinds the conical grinding surface of the valve, and the driving mechanism can drive the second output shaft 6 to rotate and revolve around the revolution axis, so that the grinding piece installed on the second output shaft 6 grinds the flat grinding surface of the valve.

[0034] In this embodiment, a first output shaft 5 and a second output shaft 6 are provided, and the first output shaft 5 and the second output shaft 6 are connected through a transmission mechanism. The driving mechanism can drive the first output shaft 5 to rotate, so that the grinding piece installed on the first output shaft 5 grinds the conical grinding surface of the valve, and when the first output shaft 5 rotates, it can drive the second output shaft 6 to rotate and revolve around the revolution axis through the transmission mechanism, so that the grinding piece installed on the second output shaft 6 grinds the plane grinding surface of the valve, so that the valve grinding device realizes dual-axis output, grinds the plane sealing surface and the conical sealing surface of the valve respectively, and can better meet the grinding requirements of the plane sealing surface and the conical sealing surface.

[0035] In this embodiment, the driving mechanism is preferably a servo motor 1, and a reducer is further provided on the output shaft of the servo motor 1, and the reducer is connected to the first output shaft 5, so that the servo motor 1 can drive the first output shaft 5 to rotate; wherein, the first output shaft 5 is coaxially arranged with the output shaft of the driving mechanism, and the second output shaft 6 is located on one side of the first output shaft 5 and is parallel to the first output shaft 5. In this embodiment, the reducer is preferably a planetary reducer 2, and a top flange is provided on the top of the first output shaft 5, and the top flange is coaxially connected with the output flange of the planetary reducer 2.

[0036] In this embodiment, the transmission mechanism is preferably a gear transmission mechanism, which is installed in a gear box, wherein the gear box mainly includes a gear box housing 401, and the top of the gear box housing 401 is provided with an upper cover plate 402, and the bottom is provided with a lower cover plate 403; the first output shaft 5 and the second output shaft 6 are both rotatably installed in the gear box, and the bottoms of the first output shaft 5 and the second output shaft 6 extend out of the gear box, and the output end of the housing of the planetary reducer 2 is bolted to the upper cover plate 402 through a transition ring 3.

[0037] It should be further explained that other transmission mechanisms, such as synchronous belt transmission mechanisms, can also be selected according to work needs.

[0038] As a preferred implementation, in this embodiment, the gear transmission mechanism mainly includes a first self-rotating gear 406, a first revolving gear 408, a second self-rotating gear 407 and a second revolving gear 409; wherein, the first self-rotating gear 406 and the first revolving gear 408 are sequentially installed on the first output shaft 5 along the axial direction of the first output shaft 5 through a key, and a sleeve 410 is sleeved on the first output shaft 5, and the sleeve 410 is located between the first self-rotating gear 406 and the first revolving gear 408, and is used for axial positioning of the two, and the first output shaft 5 is also rotatably connected to the lower cover plate 403 of the gear box through a deep groove ball bearing 411. The second self-rotating gear 407 is rotatably mounted on the gear box and meshed with the first self-rotating gear 406. The second self-rotating gear 407 is connected to the top of the second output shaft 6 through a universal joint 412. The second revolving gear 409 is rotatably mounted on the gear box and meshed with the first revolving gear 408. The second output shaft 6 is rotatably mounted on the second revolving gear 409 and is eccentrically arranged with the second revolving gear 409.

[0039] It should be noted that the axis of the second revolving gear 409 is the revolving axis of the second output shaft 6, and the second self-rotating gear 407 is connected to the second output shaft 6 through a universal joint 412, in order to facilitate the revolving of the second output shaft 6; wherein the universal joint 412 mainly includes an input flange 4121, a first linear cross roller linear bearing 4122, an intermediate section 4123 and a second linear cross roller linear bearing 4124, the upper part of the input flange 4121 is connected to the second self-rotating gear 407 by bolts, and the lower part is connected to the second self-rotating gear 407 by bolts. The first linear cross roller linear bearing 4122 and the upper and lower grooves of the middle section 4123 are respectively fixed with bolts to the first linear cross roller linear bearing 4122 and the second linear cross roller linear bearing 4124. The second linear cross roller linear bearing 4124 is perpendicular to the first linear cross roller linear bearing 4122, and the bottom is fixed with bolts to the top flange of the second output shaft 6. The above-mentioned universal joint 412 is a mature existing technology in this field, and other universal joints 412 can also be selected according to work needs, so they will not be repeated in this embodiment.

[0040] In this embodiment, the second self-rotating gear 407 is rotationally connected to the gear box through a cam bearing 404; wherein the shank of the cam bearing 404 is fixed on the upper cover plate 402 of the gear box, and the outer ring of the cam bearing 404 is installed in the inner hole of the second self-rotating gear 407.

[0041] In this embodiment, the second output shaft 6 is rotatably connected to the top of the second revolving gear 409 through the second slewing bearing 413. The second slewing bearing 413 is eccentrically arranged with the second revolving gear 409, and the eccentricity is the radius of the revolution of the second output shaft 6; specifically, a positioning hole is arranged on the upper end face of the second revolving gear 409, and the positioning hole is eccentrically arranged with the second revolving gear 409, and the eccentricity is the radius of the revolution of the second output shaft 6. The inner ring of the second slewing bearing 413 cooperates with the second output shaft 6 and is connected to the lower part of the universal joint 412 by bolts. The outer ring of the second slewing bearing 413 is installed in the positioning hole on the upper end face of the second revolving gear 409B.

[0042] Furthermore, a gear seat ring 414 is coaxially installed at the bottom of the second revolving gear 409, and the gear seat ring 414 is rotatably installed on the lower cover plate 403 of the gear box through the first slewing bearing 405; specifically, a positioning hole is provided on the lower end surface of the second revolving gear 409, and the positioning hole is coaxially arranged with the second revolving gear 409, and the gear seat ring 414 is installed in the positioning hole, and the lower part of the gear seat ring 414 is coaxially matched with the inner ring of the first slewing bearing 405, and the outer ring of the first slewing bearing 405 is installed in the positioning hole provided on the lower cover plate 403 of the gear box.

[0043] In this embodiment, the first output shaft 5 is coaxially mounted with a first connecting shaft 8 at one end extending out of the gearbox, and the first connecting shaft 8 is used to mount the grinding member; wherein, the first connecting shaft 8 is mounted in the first output shaft 5 through a limiting mechanism, and the limiting mechanism can limit the relative rotation of the first connecting shaft 8 and the first output shaft 5, and can make the first connecting shaft 8 move along the axial direction of the first output shaft 5, and an elastic element is arranged between the top of the first connecting shaft 8 and the first output shaft 5; the gearbox is driven to move toward the sealing surface by the actuator, the elastic element is compressed, and grinding pressure is applied, and when the grinding is completed, the elastic element drives the first output shaft 5 to reset. wherein, the elastic element is preferably a spring 10, and the limiting mechanism preferably includes a limiting key 11 and a limiting groove, the limiting key 11 is arranged on the first connecting shaft 8, and extends along the axial direction of the first connecting shaft 8, and the limiting groove is correspondingly arranged on the first output shaft 5, and the limiting is achieved by the cooperation of the limiting key 11 and the limiting groove; or, other limiting mechanisms can also be selected according to work needs.

[0044] The structure of the second output shaft 6 is similar. A second connecting shaft 9 is coaxially mounted on one end of the second output shaft 6 extending out of the gear box. The second connecting shaft 9 is used to mount the grinding member. The second connecting shaft 9 is mounted in the second output shaft 6 through a limiting mechanism. The limiting mechanism can limit the relative rotation between the second connecting shaft 9 and the second output shaft 6, and can enable the second connecting shaft 9 to move axially along the second output shaft 6, and an elastic element is arranged between the top of the second connecting shaft 9 and the second output shaft 6.

[0045] In this embodiment, a connecting mechanism 7 is also provided on the gear box, and the connecting mechanism 7 is used to connect with the actuator so that the actuator can drive the valve grinding device to move; wherein, the connecting mechanism 7 is preferably a connecting key, and the actuator is provided with a connecting hole that cooperates with the connecting key to realize the connection between the gear box and the actuator.

[0046] Furthermore, it needs to be explained that the above-mentioned actuators are mature existing technologies in this field and can be selected according to specific work needs, such as selecting a robotic arm, etc., and will not be described in detail in this embodiment.

[0047] The method of using the valve grinding device in this embodiment is as follows:

[0048] 1. Conical sealing surface grinding

[0049] The servo motor 1 runs after the command is applied, and the power is decelerated after passing through the planetary reducer 2; the planetary reducer 2 transmits the power to the first output shaft 5 through the output flange, and the first output shaft 5 transmits the power to the first connecting shaft 8 through the limit mechanism, and the first connecting shaft 8 drives the corresponding grinding disc to rotate;

[0050] The actuator drives the gear box to move toward the conical sealing surface, and the spring 10 is compressed to apply grinding pressure, thereby achieving coaxial grinding of the conical sealing surface.

[0051] 2. Grinding of flat sealing surface

[0052] The servo motor 1 starts to operate after the command is applied, and the power is decelerated after passing through the planetary reducer 2. The power of the planetary reducer 2 is transmitted to the first output shaft 5, and the first output shaft 5 drives the first self-rotating gear 406 and the first revolving gear 408 to rotate through the key; the first self-rotating gear 406 transmits the power to the second self-rotating gear 407, and the second self-rotating gear 407 transmits the power to the universal joint 412, and the universal joint 412 drives the second output shaft 6 to rotate to achieve self-rotation; the first revolving gear 408 drives the second revolving gear 409 to rotate, and the second revolving gear 409 drives the second output shaft 6 to rotate to achieve revolving; the second output shaft 6 transmits the power to the second connecting shaft 9 through the limiting mechanism, and the second connecting shaft 9 drives the corresponding grinding disc to rotate.

[0053] The actuator drives the gear box to move toward the flat sealing surface, the spring 10 is compressed, and grinding pressure is applied to realize the grinding disc to move in a revolution and rotation mode to grind the flat sealing surface.

[0054] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A valve grinding device, characterized in that: It includes a driving mechanism, a transmission mechanism, a first output shaft and a second output shaft, and a grinding piece can be installed on the first output shaft and the second output shaft; wherein, the first output shaft and the second output shaft are connected through the transmission mechanism, and the driving mechanism can drive the first output shaft to rotate so that the grinding piece installed on the first output shaft grinds the conical grinding surface of the valve, and the driving mechanism can drive the second output shaft to rotate and revolve around the revolution axis so that the grinding piece installed on the second output shaft grinds the flat grinding surface of the valve.

2. The valve grinding device according to claim 1, characterized in that: The driving mechanism is a servo motor, and the output shaft of the servo motor can be connected to the first output shaft.

3. The valve grinding device according to claim 2, characterized in that: A reducer is also arranged on the output shaft of the servo motor.

4. The valve grinding device according to claim 2 or 3, characterized in that: The first output shaft is coaxially arranged with the output shaft of the driving mechanism, and the second output shaft is parallel to the first output shaft.

5. The valve grinding device according to claim 4, characterized in that: The transmission mechanism is a gear transmission mechanism, which is installed in a gear box. The first output shaft and the second output shaft are both rotatably installed in the gear box, and the bottoms of the first output shaft and the second output shaft extend out of the gear box.

6. The valve grinding device according to claim 5, characterized in that: The gear transmission mechanism includes a first self-rotating gear, a first revolving gear, a second self-rotating gear and a second revolving gear, the first self-rotating gear and the first revolving gear are sequentially installed on the first output shaft along the axial direction of the first output shaft; the second self-rotating gear is rotatably installed on the gear box and meshed with the first self-rotating gear, and the second self-rotating gear is connected to the top of the second output shaft through a universal joint; the second revolving gear is rotatably installed on the gear box and meshed with the first revolving gear, and the second output shaft is rotatably installed on the second revolving gear and is eccentrically arranged with the second revolving gear.

7. The valve grinding device according to claim 5 or 6, characterized in that: A first connecting shaft is coaxially mounted on one end of the first output shaft extending out of the gear box, and the first connecting shaft is used to mount the grinding member; wherein the first connecting shaft is mounted in the first output shaft through a limiting mechanism, and the limiting mechanism can limit the relative rotation of the first connecting shaft and the first output shaft, and can enable the first connecting shaft to move along the axial direction of the first output shaft, and an elastic element is arranged between the top of the first connecting shaft and the first output shaft; A second connecting shaft is coaxially mounted on one end of the second output shaft extending out of the gear box, and the second connecting shaft is used to mount the grinding member; wherein the second connecting shaft is mounted in the second output shaft via a limiting mechanism, and the limiting mechanism can limit the relative rotation of the second connecting shaft and the second output shaft, and can enable the second connecting shaft to move axially along the second output shaft, and an elastic element is arranged between the top of the second connecting shaft and the second output shaft.

8. The valve grinding device according to claim 7, characterized in that: The gear box is also provided with a connecting mechanism, which is used to connect with an actuator so that the actuator can drive the valve grinding device to move.

9. The valve grinding device according to claim 6, characterized in that: The second self-rotating gear is rotationally connected to the gear box through a cam bearing; wherein the shank of the cam bearing is fixed to the upper cover plate of the gear box, and the outer ring of the cam bearing is installed in the inner hole of the second self-rotating gear.

10. The valve grinding device according to claim 6, characterized in that: The second output shaft is rotatably connected to the top of the second revolving gear via a second slewing bearing, and the second slewing bearing is eccentrically arranged to the second revolving gear; A gear seat ring is coaxially mounted on the bottom of the second revolving gear, and the gear seat ring is rotatably mounted on the lower cover plate of the gear box through a first turntable bearing.

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