Self-locking multifunctional valve cover drilling positioning device

Abstract

The invention discloses a self-locking multifunctional valve cover drilling positioning device, relates to the technical field of valve machining, and is used for solving the problems that an existing valve cover drilling positioning device is inaccurate in positioning and lacks stability in the actual machining process. The device comprises a horizontal flange drilling positioning plate and a bridge type drilling positioning plate arranged on the upper end face of the horizontal flange drilling positioning plate, a plurality of through holes are formed in the horizontal flange drilling positioning plate, the lower portion of the middle through hole of the horizontal flange drilling positioning plate is connected with an expansion cone, and a handle penetrates through the middle through hole to fix the device to a valve deck to be machined. According to the device, the device can be locked on the processed valve cover by operating the handle, so that the operation difficulty of the device can be reduced; and moreover, the processing of the flange and ear part holes on the valve cover can be realized through one-time clamping, so that the clamping times can be shortened, and the universality of the device is improved.

Description

Technical Field

[0001] This invention belongs to the field of valve processing technology, specifically relating to a self-locking multifunctional valve cover drilling and positioning device. Background Technology

[0002] As one of the important pressure boundary components of a valve, the valve cover, located at the top of the valve, serves functions such as connecting supports and installing packing. At the same time, it provides bolt holes distributed in different directions to meet the requirements for fastening connections.

[0003] Because the bolt holes are distributed in different directions and there is no corresponding drilling positioning reference, the bolt holes, especially in the "ear" part, are tilted and have inconsistent heights on both sides during the actual processing. This leads to the valve stem being damaged due to the offset of the pressure plate parts during valve operation, which seriously affects the valve's service life and the occurrence of potential external leakage. Summary of the Invention

[0004] The purpose of this invention is to provide a self-locking multifunctional valve cover drilling and positioning device, which solves the problems of inaccurate positioning and lack of stability of existing valve cover drilling and positioning devices in actual processing.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a self-locking multi-functional valve cover drilling and positioning device, wherein the device includes: a horizontal flange drilling and positioning plate and a bridge-type drilling and positioning plate disposed on its upper end face, the horizontal flange drilling and positioning plate is provided with a plurality of through holes, the lower part of the middle through hole is connected to an expansion cone, and the handle passes through the middle through hole to fix the device on the valve cover to be processed.

[0006] The above-mentioned self-locking multi-functional valve cover drilling and positioning device includes a lower outer circle at the lower part of the middle through hole of the horizontal flange drilling and positioning plate, which is capable of inserting the inner hole of the valve cover to be processed, and an elastic groove is provided on the inner side of the lower outer circle for connecting with the expansion cone.

[0007] The above-mentioned self-locking multi-functional valve cover drilling and positioning device includes a horizontal flange drilling and positioning plate reference hole on the upper end face of the horizontal flange drilling and positioning plate, which has the same position and number of holes as the upper flange end face of the valve cover to be processed.

[0008] The aforementioned self-locking multi-functional valve cover drilling and positioning device has a handle with a "T"-shaped structure, consisting of a control lever, a limiting shoulder, and an external thread from top to bottom.

[0009] The aforementioned self-locking multi-functional valve cover drilling and positioning device includes a positioning inner shoulder on the lower end face of the horizontal flange drilling and positioning plate, the shape of which matches the flange end boss on the valve cover to be processed, and the two cooperate to position the horizontal flange drilling and positioning plate.

[0010] The self-locking multifunctional valve cover drilling positioning device, wherein the bridge type drilling positioning plate is horizontally arranged on the upper end surface of the horizontal flange drilling positioning plate and is fixedly connected to the upper end surface of the horizontal flange drilling positioning plate through the internal hexagonal screw on the upper portion of the bridge type drilling positioning plate.

[0011] The self-locking multifunctional valve cover drilling positioning device, wherein the upper end surface of the horizontal flange drilling positioning plate is provided with a guide key, the bridge type drilling positioning plate is positioned through the guide key, and the guide key is fixed in the key groove of the bridge type drilling positioning plate through the guide piece fixing screw.

[0012] Compared with the prior art, the self-locking multifunctional valve cover drilling positioning device has the beneficial effects that: on one hand, the device can be locked on the valve cover to be machined through the operation handle, thereby reducing the operation difficulty of the device; on the other hand, the flange and ear hole of the valve cover can be machined through one-time clamping, thereby shortening the clamping times and improving the versatility of the device. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The self-locking multifunctional valve cover drilling positioning device is shown in the structure schematic view.

[0014] Figure 2 The self-locking multifunctional valve cover drilling positioning device is shown in the top view.

[0015] Figure 3 The self-locking multifunctional valve cover drilling positioning device is shown in the right view.

[0016] Figure 4 The self-locking multifunctional valve cover drilling positioning device is shown in the clamping schematic view.

[0017] Figure 5 The self-locking multifunctional valve cover drilling positioning device is shown in the clamping top view.

[0018] Figure 6 The self-locking multifunctional valve cover drilling positioning device is shown in the horizontal flange drilling positioning plate structure schematic view.

[0019] Figure 7 The self-locking multifunctional valve cover drilling positioning device is shown in the horizontal flange drilling positioning plate top view.

[0020] Figure 8It is shown that the expansion cone structure schematic diagram of the self-locking multifunctional valve cover drilling positioning device;

[0021] Figure 9 It is shown that the handle structure schematic diagram of the self-locking multifunctional valve cover drilling positioning device;

[0022] Figure 10 It is shown that the bridge type drilling positioning plate structure schematic diagram of the self-locking multifunctional valve cover drilling positioning device; Figure 11 It is shown that the bridge type drilling positioning plate structure schematic diagram of the self-locking multifunctional valve cover drilling positioning device;

[0023] Explanation of reference numerals: 1. Horizontal flange drilling positioning plate; 101. Upper end face; 102. Observation hole; 103. Lower outer circle; 104. Elastic groove; 105. Middle through hole; 106. Guide groove; 107. Positioning inner shoulder; 108. Horizontal flange drilling positioning plate reference hole; 109. Screw hole; 2. Expansion cone; 201. Internal thread; 3. Handle; 301. Operating rod; 302. Limiting shoulder; 303. External thread; 4. Bridge type drilling positioning plate; 401. Swing arm; 402. Waist type hole; 403. Key groove; 404. Internal thread; 405. Bridge type drilling positioning plate reference hole; 5. Internal hexagonal screw; 6. Guide key fixing screw; 7. Guide key; 8. Valve cover to be processed; 801. Upper flange end face hole; 802. Upper flange end boss; 803. Inner hole; 804. Ear hole. DETAILED DESCRIPTION

[0024] In order to solve the problem of inaccurate positioning and lack of stability of the existing valve cover drilling positioning device in actual processing, the embodiment of the present application provides a self-locking multifunctional valve cover drilling positioning device. As shown in the accompanying drawings, Figures 1-10 The device comprises a horizontal flange drilling positioning plate 1 as a device base body and a bridge type drilling positioning plate 4 arranged on the upper end face 101 thereof, the horizontal flange drilling positioning plate 1 is provided with a plurality of through holes, and the lower part of the middle through hole 105 is connected with an expansion cone 2. The device is fixed on the valve cover 8 to be processed by the handle 3 passing through the middle through hole 105.

[0025] The lower part of the middle through hole 105 of the horizontal flange drilling positioning plate 1 is provided with a lower outer circle 103 capable of being inserted into the lower part of the inner hole 803 of the valve cover 8 to be processed, and the inner side of the lower outer circle 103 is provided with an elastic groove 104 for connecting with the expansion cone 2, so as to realize the automatic locking of the horizontal flange drilling positioning plate 1 and the valve cover 8 to be processed under the action of the expansion cone 2, thereby realizing the quick clamping. The expansion cone 2 is a conical angle structure, which is matched with the inclined angle design of the lower opening of the lower outer circle 103, and the two are connected through the handle 3. The upper end surface 101 of the horizontal flange drilling positioning plate 1 is also provided with horizontal flange drilling positioning plate reference holes 108 which are the same in position and number as the upper flange end surface hole 801 of the valve cover 8 to be processed. The lower end surface of the horizontal flange drilling positioning plate 1 is provided with a positioning inner shoulder 107, which is matched with the flange end boss 802 on the valve cover 8 to be processed, so as to ensure that the positioning reference of the horizontal flange drilling positioning plate 1 is consistent.

[0026] The handle 3 is a "T" shaped structure, which is sequentially provided with a control rod 301, a limiting shoulder 302 and an outer thread 303 from top to bottom. The outer thread 303 on the handle 3 passes through the middle through hole 105 on the horizontal flange drilling positioning plate 1 and is screwed into the inner thread 202 at the top of the expansion cone 2. The limiting shoulder 302 at the middle position of the handle 3 interacts with the upper end surface 101 of the horizontal flange drilling positioning plate 1, so that the horizontal flange drilling positioning plate 1 and the expansion cone 2 form an integral whole in the initial state.

[0027] In order to realize the machining and positioning of the holes in multiple parts of the valve cover 8 to be processed, the bridge type drilling positioning plate 4 is horizontally arranged on the upper end surface 101 of the horizontal flange drilling positioning plate 1 and is fixedly connected to the upper end surface 101 of the horizontal flange drilling positioning plate 1 through the inner hexagonal screw 5 on the upper part of the bridge type drilling positioning plate 4. In order to ensure the connection between the horizontal flange drilling positioning plate 1 and the bridge type drilling positioning plate 4, the inner hexagonal screw 5 is screwed into the screw hole 109 on the upper end surface 101 after passing through the waist type hole 402 on both sides of the bridge type drilling positioning plate 4, thereby being effectively fixed.

[0028] The bridge type drilling positioning plate 4 is provided with swing arms 401 on both sides, which are respectively connected and fixed with the ear holes 804 on the valve cover 8 to be processed. The bridge type drilling positioning plate 4 is provided with bridge type drilling positioning plate reference holes 405 on both sides of the swing arms 401, which are the same in position and number as the ear holes 804 on the valve cover 8 to be processed, so as to realize the positioning of the ear holes 804 which are perpendicular to be drilled.

[0029] A guide key 7 is provided on the upper end face 101 of the horizontal flange drilling positioning plate 1. The guide key 7 is positioned with the bridge drilling positioning plate 4, and the two are connected by a guide fixing screw 6, which fixes the guide key 7 in the keyway 403 of the bridge drilling positioning plate 4. The guide fixing screw 6 is screwed into the internal thread 404 of the bridge drilling positioning plate 4. A guide groove 106 is also provided between the horizontal flange drilling positioning plate 1 and the bridge drilling positioning plate 4. By inserting the guide key 7 into the guide groove 106 on the horizontal flange drilling positioning plate 1, the error caused by the inconsistent thickness of the blank at the ear part can be automatically adjusted by sliding.

[0030] After the lower outer circle 103 of the horizontal flange drilling positioning plate 1 of this device is inserted into the inner hole 803 of the valve cover 8 to be processed, the inner shoulder 107 on its back side cooperates with the flange end boss 802 on the valve cover 8 to be processed, so that the device is in a suitable position. By rotating the operating lever 301 on the handle 3, the expansion cone 2 moves upward toward the middle through hole 105 of the horizontal flange drilling positioning plate 1, so that the lower outer circle 103 expands and fits tightly with the inner hole 803 of the valve cover 8 to be processed, thereby achieving the purpose of self-locking and fixing the horizontal flange drilling positioning plate 1. During this process, the locking condition can be observed through the observation hole 102. This device can also take into account the thickness error of the "ear" shape of the valve cover 8 to be processed, that is, by finely adjusting the position of the guide key 7 on the sliding bridge drilling positioning plate 4 in the guide groove 106 on the horizontal flange drilling positioning plate 1. After locking the hex socket screw 5, the upper flange hole 801 and the ear hole 804 can be machined. After the machining is completed, the lower outer circle 103 of the horizontal flange drilling positioning plate 1 is retracted by rotating the control lever 301 on the handle 3 in the opposite direction. After it is disengaged from the inner hole 803 of the valve cover 8 to be machined, the device can be taken out.

[0031] It should be noted that the combination of the technical features in the embodiments of the present invention is not limited to the combination methods described in the embodiments of the present invention or the combination methods described in the specific embodiments. All technical features described in the present invention can be freely combined or combined in any way, unless there is a contradiction between them.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-locking multifunctional valve cover drilling positioning device, characterized in that, The device comprises a horizontal flange drilling positioning plate (1) and a bridge drilling positioning plate (4) arranged on the upper end face (101) of the horizontal flange drilling positioning plate (1), the horizontal flange drilling positioning plate (1) is provided with a plurality of through holes, and the lower part of the middle through hole (105) is connected with an expansion cone (2), and a handle (3) passes through the middle through hole (105) to fix the device on a valve cover (8) to be machined.

2. A self-locking multifunctional valve cover drilling positioning device according to claim 1, characterized in that, The lower part of the middle through hole (105) of the horizontal flange drilling positioning plate (1) is provided with a lower outer circle (103) capable of being inserted into the lower part of the inner hole (803) of the valve cover (8) to be machined, and the inner side of the lower outer circle (103) is provided with an elastic groove (104) for connecting with the expansion cone (2).

3. A self-locking multifunctional valve cover drilling positioning device according to claim 1, characterized in that, The upper end face (101) of the horizontal flange drilling positioning plate (1) is provided with horizontal flange drilling positioning plate reference holes (108) which are the same in position and number as the upper flange end face holes (801) of the valve cover (8) to be machined.

4. A self-locking multifunctional valve cover drilling positioning device according to claim 1, characterized in that, The handle (3) is a "T" shaped structure, and from top to bottom, it is provided with a control rod (301), a limiting shoulder (302) and an external thread (303) in sequence.

5. A self-locking multifunctional valve cover drilling positioning device according to claim 1, characterized in that, The lower end face of the horizontal flange drilling positioning plate (1) is provided with a positioning inner shoulder (107) which is matched with the flange end boss (802) on the valve cover (8) to be machined, and the two are matched to position the horizontal flange drilling positioning plate (1).

6. A self-clamping multi-functional valve cover drilling positioning device according to claim 1, characterized in that, The bridge drilling positioning plate (4) is arranged on the upper end face (101) of the horizontal flange drilling positioning plate (1), and the bridge drilling positioning plate (4) is fixedly connected to the upper end face (101) of the horizontal flange drilling positioning plate (1) through the inner hexagonal screw (5) on the upper part of the bridge drilling positioning plate (4); the two sides of the bridge drilling positioning plate (4) are provided with swing arms (401), and the swing arms (401) are respectively connected and fixed with the ear holes (804) on the valve cover (8) to be machined.

7. A self-locking multifunctional valve cover drilling positioning device according to claim 1 or 6, characterized in that, The upper end face (101) of the horizontal flange drilling positioning plate (1) is provided with a guide key (7), and the guide key (7) is positioned with the bridge drilling positioning plate (4), and the guide key (7) is fixed in the key groove (403) of the bridge drilling positioning plate (4) through the guide key fixing screw (6).

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