CN213839955U - Self-positioning device for mounting flange nut - Google Patents

Abstract

An object of the utility model is to provide a self-positioning device of mounting flange nut, including setting up the anti-flange on prefabricated tube seat, there is the nut locating plate through welding or sticky on the anti-flange, has seted up a plurality of hole grooves on the nut locating plate. The utility model discloses avoided relevant operation to need carry out the puzzlement that the spanner was operated in the past, back both sides. Meanwhile, the problem that the nut cannot be replaced due to failure in the long-term use process is solved, the recycling of relevant devices is realized, and the service life of the device is greatly prolonged. The utility model discloses not only can accomplish operations such as preparation, installation, use, maintenance in practical application the efficient, when guaranteeing the equipment fixing quality, also simplified the operation flow of prefabricated tube socket mounting means, ensured the security of relevant personnel's operation. The utility model relates to a rationally, the structure is ingenious, safe and reliable, and the practicality is strong, high-efficient environmental protection.

Description

Self-positioning device for mounting flange nut

Technical Field

The utility model belongs to the technical field of mechanical design and processing, concretely relates to equipment fixing annex and design method thereof, concretely relates to self-positioning device of mounting flange's nut.

Background

In most industrial production lines, there are various types of medium transporting piping systems, and the fluid in the piping is an essential element constituting the production system. With the rapid development of industrial technologies, more and more production processes need to perform accurate monitoring and control of the fluid elements in a full flow and a full working condition, which puts higher requirements on the use and installation of various measurement and control devices. In order to solve the problems that the conventional measurement and control equipment can be easily installed at the critical position of a fluid, the measurement and control equipment can be ensured to be smoothly maintained regularly or overhauled irregularly, and various medium conveying pipelines such as circular pipelines, rectangular pipelines and even special-shaped pipelines become one of the key problems concerned by various industrial systems from the beginning of design.

In order to solve the above problems, the method of prefabricating an installation accessory on a main pipeline of a fluid medium is often adopted at present, and the installation accessory is usually a prefabricated flange pipe base device type. After the overall dimension, the fixing requirement and the installation position of the measurement and control equipment are comprehensively considered, a proper basic type of the prefabricated flange pipe seat, such as a circular or rectangular short pipe, is determined, and then a corresponding installation reverse flange is matched. The prefabricated flange pipe seat is permanently welded and connected with the main process medium pipeline, and the measurement and control equipment is connected with the reverse flange of the pipe seat through bolts, so that the measurement and control equipment is installed. Through this kind of installation annex, measurement and control equipment can be convenient carry out effective connection with the trunk line system. When necessary, the measurement and control equipment can be conveniently removed, and the main pipeline system is closed by using the matched flange cover plate. Therefore, the prefabricated flange pipe seat is the preferred solution for solving the problems due to the characteristics of convenient and reliable use.

In the in-service use process, after the measuring and control equipment is installed in the prefabricated pipe seat, the fastening operation of installing the bolt needs to be completed, so that the equipment is stably connected, and the flowing medium in the main pipeline is sealed. The tightening of the bolts requires the operator to use two wrenches to position and tighten the nuts on the back side of the mounting counter flange and the screws on the outer side of the equipment flange. Because the installation anti-flange is generally all very little with the outer heat preservation backplate of trunk line interval, operating personnel is when screwing the screw, and the activity space surplus of carrying out the location operation to dorsal nut is very little. Especially, when the connecting bolt has a large size and the required wrench has a large size, the operation of fastening or loosening the bolt is more inconvenient. When special conditions are met, the heat-insulating outer protective plate of the main pipeline and the installation reverse flange are flush and even exceed the plane of the reverse flange, namely the reverse flange sinks into the heat-insulating layer, the operation of fastening or loosening the installation bolt becomes very difficult, the heat-insulating layer near the pipe seat is usually required to be disassembled and assembled again, and therefore the heat-insulating effect of the main pipeline nearby is not convenient and is influenced. In addition, some measurement and control equipment are located the trunk line eminence, and when dismouting equipment need carry out "high altitude construction", the degree of difficulty of this kind of operation will increase at double again, brings various potential safety hazards.

Some projects adopt a method of welding nuts on the back of the reverse flange to solve the difficulties. Namely, the screw only needs to be rotated from the front side during operation, and the back nut does not need to be positioned by a spanner. However, after long-term use, the phenomena of nut corrosion and thread slipping still occur, and the tightness of equipment installation is affected. Once this occurs, the counter-flange needs to be replaced completely. In addition, the method has high requirements on the welding positioning precision of the nut on site and needs careful operation. Therefore, how to guarantee to be located the effectual location of the dorsal nut of the reverse flange of equipment fixing, make the bolt can be fast screwed or loosen, and can make the convenient regular renewal that carries on of nut, become the key that improves prefabricated flange tube socket mounting form availability factor, guarantee relevant convenient operation nature and security.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mounting flange's nut is from positioner can fix a position the fastening nut who is located the mounting flange dorsal part, and convenient carry out screwing and the operation of loosening of screw. In addition, the nut can be conveniently replaced, so that the normal and complete installation function of the prefabricated flange pipe seat is ensured, and the equipment installation efficiency and the operation safety are improved.

In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:

the utility model provides a self-positioning device of mounting flange nut, is including setting up the anti-flange on prefabricated tube seat, has the nut locating plate through welding or gluing on the anti-flange, has seted up a plurality of holes groove on the nut locating plate.

The utility model discloses further improvement lies in that female locating plate and prefabricated tube socket lie in anti-flange with one side.

The utility model discloses further improvement lies in, when the locating plate level was arranged, the hole groove was vertical to be arranged.

The utility model discloses a further improvement lies in, the angle of elevation of hole groove and water flat line is.

The utility model discloses a further improvement lies in, and the hole inslot is provided with the nut.

The utility model discloses a further improvement lies in, is provided with the nut baffle on the locating plate, has seted up nut baffle empty window on the nut baffle.

The utility model discloses a further improvement lies in, sets up the connection shelves card in the outer fringe of locating plate.

The utility model discloses a further improvement lies in, locating plate and anti-flange pass through shelves card structure welded connection.

A self-positioning method for a mounting flange nut is characterized in that the nut is placed into each hole groove, then a screw is inserted and rotated, and the nut is automatically fastened.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model discloses a setting makes the supporting nut of all construction bolts can independently fix a position at the dorsal locating plate of the anti-flange of equipment fixing tube socket to stable "being detained" in location department, and the locating plate design of this kind of structure is simple, and processing is convenient, and the installation is reliable, uses easily. The operation flow of the prefabricated flange tube seat in the equipment installation mode is simplified to a certain extent, the operation safety of operators is guaranteed, the operation efficiency is greatly improved, the problems of positioning of fastening nuts and regular updating of the nuts are solved, and the device has the characteristics of low cost and convenience in use.

Furthermore, the locating plate can be designed and processed conveniently according to the overall dimension of the installation reverse flange and the position of the bolt hole. Meanwhile, simple combination can be carried out according to the distribution and the number of the bolt holes. In engineering practical application, the locating plate can be used with the quick combination of the installation anti-flange.

Furthermore, the hole groove structure on the positioning plate can be accurately matched with the shape and size of a matched nut, and when the screw is screwed or loosened from the front side, the nut can also be reliably locked. The normal operation and the fastening effect of the bolt are not influenced at all. The simple and clear structural design enables operators to easily operate without carrying out excessive use guidance.

Furthermore, the elevation design of the hole groove of the positioning plate can ensure that the nut is stably retained in the hole groove, thereby avoiding the phenomenon that the nut easily slides and falls out. Simultaneously, the nut baffle hollow window structure at locating plate rear portion also can make the nut light take out the change, has made things convenient for the use of device greatly, has promoted the whole body functionality.

Furthermore, the nut positioning plate and the reverse flange are simple in connection form, and rapid installation can be completed by adopting a welding or gluing mode. The edge blocking clamp can not only enable the positioning plate to be positioned quickly, but also can be used as a welding point to facilitate welding operation, the use flexibility of the nut self-positioning device can be greatly improved, and the reliability of the device is also ensured.

Drawings

Fig. 1 is a three-dimensional schematic diagram of the device of the present invention in a combined state.

FIG. 2 is a three-dimensional schematic diagram of the device in a disassembled state

Fig. 3 is an exploded front view of the device of the present invention.

Fig. 4 is an enlarged view of fig. 3 at the circle.

In the figure: the device comprises a prefabricated pipe seat 1, a reverse flange 2, a nut positioning plate 3, a nut 4, a hole groove 5, a nut baffle plate hollow window 6 and a connecting stopper 7.

Detailed Description

The present invention will be described in further detail below with reference to the specific implementation process of the corresponding nut self-positioning device, which is illustrated by way of example in the form of a rectangular prefabricated flange socket, and is not intended to be limited by the present invention.

As shown in fig. 1-4, the utility model discloses a self-positioning device of mounting flange nut mainly comprises with prefabricated tube socket 1 and the supporting combination of anti-flange 2 and be located the dorsal nut locating plate 3 of anti-flange. The counter flange is designed and machined according to a mounting flange on equipment, and the equipment is fixed and sealed against fluid media. The nut positioning plate is designed and processed according to key parameters such as the overall dimension of the mounting counter flange, the position of a bolt hole and the like. And then, connecting the two parts of components in a welding or gluing mode and the like to form the prefabricated flange-mounting pipe seat with the nut self-positioning function. Specifically, the nut positioning plate 3 is generally composed of two parts which are respectively arranged on two sides of the back side of the reverse flange 2 and have mirror symmetry structures. Therefore, the positioning plate can be connected with the flange more conveniently, and even the built prefabricated flange seat device can be upgraded and reformed. Specifically, when the mounting counter flange is rectangular, two or more strip-shaped straight plates with mirror images and symmetrical structures can be used as the base material of the positioning plate. When the mounting reverse flange is circular, two annular plates with mutually mirror-imaged structures can be used as the base materials of the positioning plate.

The arrangement form and the screw hole center of the nut positioning plate 3 are determined according to the distribution form and the number of the bolt holes on the reverse flange 2, the vertical installation mode should be selected for the nut positioning plate 3, and 4 nut positioning hole grooves 5 should be reserved on each nut positioning plate 3. The hole groove 5 is provided with a nut 4. And determining the axial positions of the holes and the grooves on the nut positioning plate 3 according to the positions of the fastening bolt holes on the reverse flange, namely the axial line of the bolt holes of the reverse flange is coincided with the axial line of the nut hole grooves 5 of the nut positioning plate 3. Therefore, the fastening bolt can be normally screwed in and out, and the equipment installation effect is ensured. The nut hole grooves 5 can ensure that all the nuts 4 can be autonomously positioned at the positions when the bolts are fastened. The nut positioning plates 3 are respectively arranged on the back of the reverse flange 2 from two sides or the back part forwards. The specific mounting direction is shown in fig. 2 and 3. The width dimension A of the nut positioning plate 3 is smaller than the exposed width of the outer edge of the reverse flange 2, so that the influence of the prefabricated tube seat 1 on the installation of the nut positioning plate 3 is avoided.

The combined state, i.e. longitudinal or transverse arrangement, of the nut positioning plate 3 and the counter flange 2 depends on the arrangement of the bolt holes on the counter flange 2. If all bolt holes are arranged longitudinally, the positioning plate should also be arranged longitudinally. When the bolt holes are distributed transversely, the positioning plate is arranged transversely. And the quantity of the fixing nuts on one positioning plate can be freely combined according to the distribution condition of the bolt holes.

The nut positioning plate 3 is provided with a nut baffle. When the nut positioning plate 3 is designed, the following factors should be considered. The length of the nut positioning plate 3 is required to ensure the stable positioning of all the nuts 4. Meanwhile, the thickness of the nut positioning plate 3 is determined according to the maximum standard thickness of the matched nut 4, the size of at least 2mm is increased after the thickness allowance is reserved, and the nut baffle plate is kept to be certain thickness while the nut 4 is ensured to be smoothly placed.

After the number and the positions of the holes on the positioning plate are determined, the standard overall dimension of the matched nut needs to be determined according to the specification of the fastening bolt. And (5) processing a hole groove 5 by taking the axis of the bolt hole as the center of a circle and taking the standard maximum value of the opposite edge distance of the nut as the width. The depth of the bore recess 5 is the standard maximum value for the nut thickness. And then, processing an arc at the end part of the hole groove 5 by taking the standard maximum value of the diagonal distance of the nut as the diameter. The above size should be determined by national standard, and should reserve at least 0.5mm margin. It can be seen that the hole groove 5 processed in this way can be used for conveniently placing a nut to be positioned and accurately positioning the nut at the bolt hole. Meanwhile, when the screw is rotated, the nut is locked by the hole groove 5 and cannot rotate along with the screw. Thus, the function purpose of self-positioning of the nut is achieved.

The slot 5 should be at an angle of elevation to the horizontal. The nut can slide to the positioning position from the position when being put in, and the nut can not easily fall out after the screw is taken out. Of course, if the positioning plate is horizontally placed, the hole slot 5 is vertically upward.

After the hole groove 5 on the positioning plate is processed, a nut baffle at the rear part of the hole groove 5 needs to be processed to form a certain hollow window structure. The size principle of the hollow window is that the nut baffle plate can ensure that the nut can be safely retained in the hole groove 5. The function of the hollow window is to avoid the phenomenon that the nut cannot be conveniently taken out from the hole groove 5 because the hole groove 5 is too deep. Thus, the functional requirement that the device can rapidly update the nut is also guaranteed.

When the nut positioning plate 3 is processed, the circle center of a screw hole on the nut positioning plate 3 is determined according to the axis of a bolt hole on the reverse flange 2. And determining the width B of the hole slot 5 according to the maximum standard edge distance of the matched nut 4, and simultaneously ensuring a certain margin. The smooth sliding in and out of the nut 4 can be ensured, and the screw can be automatically tightened when being screwed in and out. It should be noted that, the allowance of the dimension B should not be too large, so that when the screw rotates, the rotation angle of the nut 4 is too large, and the stress of the nut 4 is concentrated on the hexagonal edge to damage the related structure.

And then, according to the maximum standard diagonal distance of the matched nut 4, determining the arc size R1 of the end part of the hole slot 5, and reserving allowance, so that the nut 4 can be accurately positioned conveniently, and the nut 4 can be stably retained at an accurate position when automatically sliding into the hole slot 5. Similarly, the margin of the dimension R1 should not be too large, so as to avoid too large a deviation of the central axis of the nut 4 from the actual fastened axis.

Preferably, the depth of the hole groove 5 of the nut on the nut positioning plate 3 is determined according to the maximum standard thickness of the matched nut 4, and allowance is reserved at the time, so that the nut 4 can conveniently enter and exit. Meanwhile, the hole groove 5 of the nut keeps an elevation angle of 30 degrees with the horizontal line, so that the nut 4 can be stably retained in the hole groove 5 no matter whether in a fastening state or not after being placed in, and cannot fall out due to accidental factors. And when the nut positioning plate 3 is horizontally arranged, the nut hole groove 5 can be vertically arranged, and the nut 4 can be stably reserved in the nut hole groove 5.

Preferably, a nut baffle is arranged at the back of each nut hole groove 5 on the nut positioning plate 3, a nut baffle hollow window 6 is formed in the nut baffle, and the size C of the nut baffle hollow window 6 is selected appropriately according to actual conditions. When guaranteeing that nut 4 is stable "detained" in hole groove 5, make things convenient for nut 4 just to take out from hole groove 5 through simple operation, realize the change to nut 4, realize the used cyclically of device.

Preferably, the outer edge of the nut positioning plate 3 can be provided with a connecting stop 7 according to the edge size of the mounting counter flange 2. The connecting stopper 7 is designed as long as the nut positioning plate 3 and the reverse flange 2 can be accurately positioned. In actual connection, the nut positioning plate 3 and the reverse flange 2 can be welded by using the connecting stopper 7 as a welding point.

When the device is used, an operator only needs to put the nut 4 matched with the fastening bolt into each hole groove 5, and the nut 4 can be accurately and automatically positioned at the correct position. The screw is then inserted from the front of the equipment mounting flange and rotated, and the nut 4 is self-tightening. Therefore, the screwing and unscrewing operation of the screw can be performed only from the front side without applying a force to the rear side.

Preferably, when the matched nut 4 needs to be replaced, the nut baffle plate hollow window 6 at the back of the nut positioning plate 3 is utilized, so that an operator can take out the nut by using a simple tool, the cyclic utilization of the device is realized, and the integral reliability of the device is improved.

The utility model discloses the utilization is installed in the dorsal nut locating plate of anti-flange, through ingenious structural design, has solved fastening nut's self-align and have decided the problem certainly, has avoided relevant operation to need carry out the puzzlement that the spanner was operated in the past, back both sides. Meanwhile, the problem that the nut cannot be replaced due to failure in the long-term use process is solved, the recycling of relevant devices is realized, and the service life of the device is greatly prolonged. In addition, the nut self-positioning device and the nut self-positioning method can efficiently complete the operations of manufacturing, installation, use, maintenance and the like in practical application, ensure the installation quality of equipment, simplify the operation flow of the installation mode of the prefabricated pipe seat and ensure the operation safety of related personnel. The utility model relates to a rationally, the structure is ingenious, safe and reliable, and the practicality is strong, high-efficient environmental protection.

Claims (7)

1. The utility model provides a self-positioning device of mounting flange nut which characterized in that, is including setting up anti-flange (2) on prefabricated tube seat (1), has nut locating plate (3) through welding or gluing on anti-flange (2), has seted up a plurality of holes groove (5) on nut locating plate (3).

2. A mounting flange nut self-locating device according to claim 1, characterised in that the nut locating plate (3) and the pre-fabricated socket (1) are located on the same side of the counter-flange (2).

3. A mounting flange nut self-locating arrangement according to claim 2, characterised in that the hole slots (5) are arranged vertically when the nut locating plate (3) is arranged horizontally.

4. A mounting flange nut self-locating arrangement according to claim 2, characterised in that the elevation of the hole groove (5) from the horizontal is 30 °.

5. A mounting flange nut self-locating arrangement according to claim 2, characterised in that the nut (4) is disposed within the bore hole (5).

6. The mounting flange nut self-positioning device according to claim 1, characterized in that the nut positioning plate (3) is provided with a nut baffle, and the nut baffle is provided with a nut baffle hollow window (6).

7. A mounting flange nut self-locating device according to claim 1, characterised in that the outer edge of the nut locating plate (3) is provided with a connecting stop (7).

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