Valve body cover center distance detection jig

Abstract

The utility model relates to the technical field of valve body processing, in particular to a tool for detecting the center distance of a valve body cover. Comprising a main plate, six outer detection holes are formed in the position, close to the edge, of the main plate, bolt hole thread detection rods are arranged in the outer detection holes in a sliding mode, detection rod threads are formed in the position, close to one end, of each bolt hole thread detection rod, and a center detection hole is formed in the center of the main plate; a center detection rod is slidably arranged in the center detection hole. According to the utility model, a worker inserts the six bolt hole thread detection rods into the corresponding threaded holes or bolt holes respectively, so that the center distance of the threaded holes in a plurality of valve bodies of the same model and the center distance of the bolt holes in an upper cover can be detected, thereby reducing the number of jigs used for detecting the middle distance between the valve bodies and the upper cover. The problems that an existing center distance detection jig is complex and inconvenient to use and store are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body processing technical field, specifically, relate to a center distance detection fixture of valve body cover. BACKGROUND

[0002] Valve body and valve cover are two important components in valve, valve body and valve cover play different roles in valve, valve body is the core part of valve, is responsible for controlling and adjusting medium, and valve cover mainly plays the role of protection and sealing.

[0003] In prior art, when processing a valve body 6 and an upper cover 7 matched with the valve body 6, the center distance detection of the threaded hole 62 for fixing on the valve body 6 and the bolt hole 71 on the upper cover 7 is needed, the valve body 6 is used in cooperation with the upper cover 7, so the center distance of the threaded hole 62 on the valve body 6 and the bolt hole 71 on the upper cover 7 of the same type is the same, so that the worker can assemble the valve body 6 and the upper cover 7 into a valve by the way of screwing the bolt through the bolt hole 71 into the corresponding threaded hole 62, the center distance of the threaded hole 62 and the bolt hole 71 on the small valve can be directly measured, the center distance of the threaded hole 62 and the bolt hole 71 on the large valve cannot be directly measured by using the detection equipment, and the corresponding center distance detection fixture needs to be made, different fixtures are needed for detecting the center distance of the threaded hole 62 on the valve body 6 and the bolt hole 71 on the upper cover 7 in prior art, the fixtures are numerous, and the storage of the fixtures is inconvenient. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a center distance detection fixture of valve body cover to solve the problems in the background art.

[0005] To achieve the above object, one of the purposes of the utility model is to provide a center distance detection fixture of valve body cover, which comprises a main plate, six outer detection holes are formed on the main plate near the edge, bolt thread detection rods are slidably arranged in the outer detection holes, detection rod threads are formed on the bolt thread detection rods near one end, a center detection hole is formed on the center of the main plate, a center detection rod is slidably arranged in the center detection hole, when the main plate contacts the valve body, the center detection hole corresponds to the center hole, the positions of the six bolt thread detection rods correspond to the positions of the six threaded holes one by one, and when the main plate contacts the upper cover, the positions of the six bolt thread detection rods correspond to the positions of the six bolt holes one by one.

[0006] As a further improvement of the technical solution, six guide sleeves are fixedly arranged on the main plate, the positions of the six guide sleeves correspond to the positions of the six outer detection holes one by one, an extension rod is slidably arranged on the guide sleeve, the line connecting the centers of the outer detection hole and the center detection hole is parallel to the axis of the extension rod, an arc-shaped plate is fixedly connected to the end of the extension rod away from the center detection hole, the positions of the six arc-shaped plates correspond to the positions of the six bolt hole threaded detection rods one by one, and an expansion mechanism is arranged on the main plate, which is used to drive the six arc-shaped plates to synchronously approach or move away from the corresponding bolt hole threaded detection rods.

[0007] As a further improvement of the technical solution, the expansion mechanism comprises a center gear rotatably arranged at the center position of the main plate, six transmission gears are meshingly connected to the outer side of the center gear, the transmission gears are rotatably arranged on the main plate, a rack is fixedly connected to the end of the extension rod away from the arc-shaped plate, the rack is in sliding contact with the side of the center gear away from the main plate, and the six racks are respectively meshed with the six transmission gears, one of the guide sleeves is provided with a displacement assembly, and the displacement assembly is used to drive one of the racks to approach or move away from the center detection hole.

[0008] As a further improvement of the technical solution, the displacement assembly comprises a positioning plate fixedly connected to the upper surface of the guide sleeve, a threaded rod is threadedly connected to the positioning plate, and the end of the threaded rod close to the center detection hole is rotatably connected with the rack.

[0009] As a further improvement of the technical solution, the arc-shaped plate is fixedly connected with a rubber pad on the side close to the bolt hole threaded detection rod, and when the arc-shaped plate approaches the bolt hole threaded detection rod, the rubber pad is in contact with the side wall of the bolt hole threaded detection rod.

[0010] Compared with the prior art, the valve body cover center distance detection jig has the following beneficial effects:

[0011] 1. The valve body cover center distance detection jig can detect the center distance of the threaded holes on several valve bodies and the center distance of the bolt holes on the upper cover of the same type, thereby reducing the number of jigs used for detecting the distance between the valve body and the upper cover, and solving the problems of the existing center distance detection jig, such as being complicated, inconvenient to use and store.

[0012] 2. When the worker continuously detects the center distance of the bolt holes on several upper covers, the rubber pad on the arc-shaped plate is in close contact with the side wall of the corresponding bolt hole threaded detection rod through the expansion mechanism, so that the relative movement between the bolt hole threaded detection rod and the main plate is limited, the outer detection hole of the bolt hole threaded detection rod is prevented from sliding out, and the risk of accidental loss of the bolt hole threaded detection rod is eliminated. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic view of the utility model;

[0014] Figure 2 It is the structure schematic view of the mainboard of the utility model;

[0015] Figure 3 It is the structure schematic view of the center detection rod and the bolt hole thread detection rod of the utility model;

[0016] Figure 4 It is the structure schematic view of the displacement assembly of the utility model;

[0017] Figure 5 It is the structure schematic view of the valve body of the utility model;

[0018] Figure 6 It is the structure schematic view of the upper cover of the utility model;

[0019] Figure 7 It is the structure schematic view of the valve body and the mainboard combination of the utility model;

[0020] Figure 8 It is the structure schematic view of the upper cover and the mainboard combination of the utility model.

[0021] The meaning of each mark in the figure is:

[0022] 1, mainboard;11, guide sleeve;12, center detection hole;13, outer detection hole;

[0023] 2, center detection rod;

[0024] 3, bolt hole thread detection rod;31, detection rod thread;

[0025] 4, extension rod;41, arc plate;411, rubber pad;

[0026] 5, expansion mechanism;51, center gear;52, transmission gear;53, rack;54, displacement assembly;541, positioning plate;542, threaded rod;

[0027] 6, valve body;61, center hole;62, threaded hole;

[0028] 7, upper cover;71, bolt hole. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] Embodiment 1

[0031] Please refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , one of the purposes of the present embodiment is to provide a valve body cover center distance detection jig, which comprises a main plate 1, six outer detection holes 13 are opened on the main plate 1 near the edge position, a bolt hole threaded detection rod 3 is slidably arranged inside the outer detection hole 13, a detection rod thread 31 is opened on the bolt hole threaded detection rod 3 near one end, a center detection hole 12 is opened on the center position of the main plate 1, a center detection rod 2 is slidably arranged inside the center detection hole 12, and the center detection rod 2 is provided with a center detection rod thread 21 on one end, and the center detection rod thread 21 is matched with the detection rod thread 31. Figure 7 When the worker needs to detect the center distance of the center hole 61 and the six threaded holes 62 on the valve body 6, the worker contacts the main plate 1 with the valve body 6, adjusts the position of the main plate 1, so that the center detection hole 12 corresponds to the position of the center hole 61, and the positions of the six bolt hole threaded detection rods 3 correspond to the positions of the six threaded holes 62 one by one, and then the worker turns the six bolt hole threaded detection rods 3 in turn, and screws the six detection rod threads 31 into the six threaded holes 62 respectively, if the six detection rod threads 31 can be screwed into the corresponding threaded holes 62, it is judged that the center distance of the threaded holes 62 on the valve body 6 is qualified, if the detection rod thread 31 cannot be screwed into the corresponding threaded hole 62, it is judged that the center distance of the threaded hole 62 on the valve body 6 is unqualified, and then the worker pushes the center detection rod 2 close to the center hole 61 on the valve body 6, if one end of the center detection rod 2 can be inserted into the center hole 61, it is judged that the center distance of the center hole 61 is qualified, if one end of the center detection rod 2 cannot be inserted into the center hole 61, it is judged that the center distance of the center hole 61 is unqualified.

[0032] Please refer to Figure 8 When the worker needs to detect the center distance of the bolt hole 71 on the upper cover 7, the worker contacts the inverted main plate 1 with the upper cover 7, adjusts the position of the main plate 1, so that the positions of the six bolt hole threaded detection rods 3 correspond to the positions of the six bolt holes 71 one by one, and then the worker pushes the six bolt hole threaded detection rods 3 close to the upper cover 7 in turn, if one end of the six bolt hole threaded detection rods 3 away from the detection rod thread 31 can be inserted into the corresponding bolt hole 71, it is judged that the center distance of the bolt hole 71 on the upper cover 7 is qualified, if the bolt hole threaded detection rod 3 cannot be inserted into the corresponding bolt hole 71, it is judged that the center distance of the bolt hole 71 on the upper cover 7 is unqualified, and the worker can use the jig to detect the center distance of several valve bodies 6 and upper covers 7 of the same type, thereby reducing the number of jigs, and solving the problems of complicated existing center distance detection jigs and inconvenient use and storage.

[0033] After the worker detects the center distance of the bolt hole 71 on the upper cover 7, it is necessary to move the main plate 1 away from the upper cover 7. Since the bolt hole thread detection rod 3 can freely slide in the outer detection hole 13, it is difficult for the worker to move the main plate 1 to drive the six bolt hole thread detection rods 3 to move synchronously. The bolt hole thread detection rod 3 is easy to slide out of the outer detection hole 13, and there is a risk of accidental loss of the bolt hole thread detection rod 3. If the worker first withdraws the six bolt hole thread detection rods 3 from the corresponding outer detection hole 13 for storage, the worker still needs to insert the bolt hole thread detection rod 3 into the outer detection hole 13 when detecting the center distance of the bolt hole 71 later, which reduces the efficiency of the worker detecting the center distance of the bolt hole 71.

[0034] To solve the above problems, refer to Figures 1-8 Six guide sleeves 11 are fixedly arranged on the main plate 1, and the positions of the six guide sleeves 11 correspond one by one to the positions of the six outer detection holes 13. The extension rod 4 is slidably arranged on the guide sleeve 11. The line connecting the centers of the outer detection hole 13 and the center detection hole 12 is parallel to the axis of the extension rod 4. The arc-shaped plate 41 is fixedly connected to the end of the extension rod 4 away from the center detection hole 12. The positions of the six arc-shaped plates 41 correspond one by one to the positions of the six bolt hole thread detection rods 3. The rubber pad 411 is fixedly connected to the side of the arc-shaped plate 41 close to the bolt hole thread detection rod 3. The expansion mechanism 5 is arranged on the main plate 1. The expansion mechanism 5 is used to drive the six arc-shaped plates 41 to move synchronously close to or away from the corresponding bolt hole thread detection rod 3. After the worker inserts the end of the six bolt hole thread detection rods 3 away from the detection rod thread 31 into the corresponding bolt hole 71, the worker drives the six arc-shaped plates 41 to move synchronously in the direction close to the corresponding bolt hole thread detection rod 3 through the expansion mechanism 5 until the rubber pad 411 on the arc-shaped plate 41 is in close contact with the side wall of the corresponding bolt hole thread detection rod 3. At this time, the axes of the arc-shaped plate 41, the rubber pad 411 and the bolt hole thread detection rod 3 are located on the same straight line, so as to increase the contact area of the rubber pad 411 and the bolt hole thread detection rod 3. The friction between the rubber pad 411 and the bolt hole thread detection rod 3 is used to limit the relative movement between the bolt hole thread detection rod 3 and the main plate 1. When the worker moves the main plate 1 away from the upper cover 7, the six bolt hole thread detection rods 3 are synchronously withdrawn from the corresponding bolt hole 71. When the worker detects the center distance of the bolt hole 71 on the next upper cover 7, the worker inserts the six bolt hole thread detection rods 3 fixed on the main plate 1 into the corresponding bolt hole 71 on the upper cover 7 at the same time, so as to quickly detect the center distance of the bolt hole 71 and eliminate the risk of accidental loss of the bolt hole thread detection rod 3.

[0035] The structure of the expansion mechanism 5 is refined as follows, refer to Figure 4The expansion mechanism 5 comprises a central gear 51 rotatably arranged at the center of the main plate 1, six transmission gears 52 rotatably arranged on the main plate 1 and meshingly connected to the outer side of the central gear 51, a rack 53 fixedly connected to the end of the extension rod 4 away from the arc-shaped plate 41, and a displacement assembly 54 arranged on one of the guide sleeves 11 and used to drive the rack 53 to move close to or away from the central detection hole 12. The displacement assembly 54 comprises a positioning plate 541 fixedly connected to the upper surface of the guide sleeve 11 and a threaded rod 542 threadedly connected to the positioning plate 541 and rotatably connected to the rack 53 at the end close to the central detection hole 12. When the worker rotates the threaded rod 542, the positioning plate 541 drives the rack 53, the extension rod 4 and the arc-shaped plate 41 to move horizontally along the inner wall of the guide sleeve 11, the rack 53 drives the corresponding transmission gear 52 to rotate through the meshing connection between the rack 53 and the transmission gear 52, the central gear 51 rotates through the meshing transmission between the transmission gear 52 and the central gear 51, and the remaining transmission gears 52 rotate synchronously with the central gear 51, so that the six transmission gears 52 drive the six racks 53 and the six extension rods 4 to move horizontally along the inner wall of the corresponding guide sleeve 11. The extension rod 4 drives the arc-shaped plate 41 to move close to the corresponding bolt hole thread detection rod 3, and the rubber pad 411 on the arc-shaped plate 41 is in close contact with the side wall of the corresponding bolt hole thread detection rod 3, so that the relative movement between the bolt hole thread detection rod 3 and the main plate 1 is limited, the bolt hole thread detection rod 3 is prevented from sliding out of the outer detection hole 13, and the risk of accidental loss of the bolt hole thread detection rod 3 is eliminated.

[0036] In use, the worker rotates the threaded rod 542 to pull the rack 53, the rack 53 drives the transmission gear 52 to rotate, the transmission gear 52 drives the central gear 51 to rotate, the central gear 51 drives the remaining transmission gears 52 to rotate, and the other rotating transmission gears 52 drive the racks 53 to move. At this time, the arc-shaped plates 41 drive the bolt hole thread detection rods 3 to move close to each other, so that the arc-shaped plates 41 position the bolt hole thread detection rods 3. In this way, the worker can position a plurality of bolt hole thread detection rods 3 by rotating one transmission gear 52.

[0037] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A center distance detection jig for a valve body cover, comprising a main plate (1), characterized in that: Six outer detection holes (13) are arranged on the main plate (1) near the edge, a bolt hole threaded detection rod (3) is slidably arranged in the outer detection hole (13), a detection rod thread (31) is arranged on one end of the bolt hole threaded detection rod (3), a center detection hole (12) is arranged on the center of the main plate (1), a center detection rod (2) is slidably arranged in the center detection hole (12), when the main plate (1) is in contact with the valve body (6), the center detection hole (12) corresponds to the position of the center hole (61), the positions of the six bolt hole threaded detection rods (3) correspond to the positions of the six threaded holes (62), when the main plate (1) is in contact with the upper cover (7), the positions of the six bolt hole threaded detection rods (3) correspond to the positions of the six bolt holes (71).

2. The valve cover center-to-center distance inspection tool of claim 1, wherein: Six guide sleeves (11) are fixedly arranged on the main plate (1), the positions of the six guide sleeves (11) correspond to the positions of the six outer detection holes (13), an extension rod (4) is slidably arranged on the guide sleeve (11), the line connecting the centers of the outer detection hole (13) and the center detection hole (12) is parallel to the axis of the extension rod (4), an arc-shaped plate (41) is fixedly connected to one end of the extension rod (4) away from the center detection hole (12), the positions of the six arc-shaped plates (41) correspond to the positions of the six bolt hole threaded detection rods (3), an expansion mechanism (5) is arranged on the main plate (1), the expansion mechanism (5) is used for driving the six arc-shaped plates (41) to move synchronously close to or away from the corresponding bolt hole threaded detection rods (3).

3. The valve cover center-to-center distance inspection tool of claim 2, wherein: The expansion mechanism (5) comprises a center gear (51) rotatably arranged on the center of the main plate (1), six transmission gears (52) are rotatably arranged on the outer side of the center gear (51), one end of the extension rod (4) away from the arc-shaped plate (41) is fixedly connected with a rack (53), the rack (53) is in sliding contact with one side of the center gear (51) away from the main plate (1), the six racks (53) are engaged with the six transmission gears (52) respectively, one of the guide sleeves (11) is provided with a displacement assembly (54), the displacement assembly (54) is used for driving one of the racks (53) to move close to or away from the center detection hole (12).

4. The valve cover center-to-center distance inspection tool of claim 3, wherein: The displacement assembly (54) comprises a positioning plate (541) fixedly connected to the upper surface of the guide sleeve (11), a threaded rod (542) is threadedly connected to the positioning plate (541), one end of the threaded rod (542) close to the center detection hole (12) is rotatably connected with the rack (53).

5. The valve cover center-to-center distance inspection tool of claim 2, wherein: The arc-shaped plate (41) is fixedly connected with a rubber pad (411) on the side close to the bolt hole threaded detection rod (3), when the arc-shaped plate (41) moves close to the bolt hole threaded detection rod (3), the rubber pad (411) is in contact with the side wall of the bolt hole threaded detection rod (3).

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