Temporary guiding and positioning pin for installation of instrument in limited space

Abstract

The utility model provides a temporary guiding positioning pin for installation of an instrument in a limited space, and relates to the technical field of temporary guiding. In a limited space instrument installation scene, two screw holes at the diagonal positions of an installation position are randomly selected, screw rods of two positioning pins are screwed into the selected two screw holes, an instrument is lifted to enable the installation holes at the corresponding positions to be sleeved on a supporting rod through an end head and a guide neck, and at the moment, other installation holes are accurately aligned with the screw holes, so that the installation is completed. The installation holes and the screw holes are fixed through bolts, then the positioning pins are disassembled one by one through a wrench, the bolts are installed, instrument installation can be conveniently and efficiently completed in the limited space, and the risks of instrument collision and falling are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of temporary guide, specifically relates to a limited space instrument installation temporary guide positioning pin. BACKGROUND

[0002] The current certain instrument in a certain rocket cabin is installed on a ring plate through a plurality of bolts, and the installation method is as follows: one operator holds the instrument with hands to enter the cabin through a hatch, another operator enters the cabin from another hatch, the two operators assist each other, and install the bolts in turns, during which the two operators need to hold the instrument all the time, one holds with both hands, one holds with one hand, and the other hand installs the bolt, the installation hole of the instrument and the screw hole of the ring plate are difficult to align during the alignment of the instrument and the ring plate, the bolt cannot be quickly screwed in, the operation efficiency is low, and at least two bolts need to be installed before the operator can slightly release the hand, the lifting time is long, which easily leads to fatigue of the operator, and there are risks of knocking and falling of the instrument.

[0003] On the other hand, the inner diameter of the installation hole of the general instrument is often designed to be larger than the outer diameter of the bolt, so that the bolt can be inserted, but due to the gap between the installation hole and the bolt, once the instrument is stopped from being held after two bolts are installed, the relative position of the installation hole and the screw hole without the bolt will deviate under the action of the weight of the instrument, the instrument needs to be adjusted in posture to successfully install the remaining bolt, which affects the installation efficiency. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the utility model provides a limited space instrument installation temporary guide positioning pin, which solves the problems of low installation efficiency, knocking and falling risk of the limited space instrument.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme:

[0006] A limited space instrument installation temporary guide positioning pin, the positioning pin sequentially comprises a screw rod, a supporting rod, a guide neck and an end head from the tail end to the head end;

[0007] The screw rod, the supporting rod, the guide neck and the end head are coaxially arranged;

[0008] The screw rod is used for screwing into the screw hole of the installation position;

[0009] The outer diameter of the supporting rod matches the hole diameter of the installation hole of the instrument, so that the installation hole can be exactly fitted on the supporting rod;

[0010] The head end diameter of the guide neck is smaller than the tail end diameter;

[0011] The end head provides a force point for the rotating positioning pin.

[0012] Preferably, the outer diameter of the support rod is greater than the outer diameter of the screw rod.

[0013] Preferably, the outer diameter of the support rod is greater than the outer diameter of the end head.

[0014] Preferably, the guide neck is provided in a circular truncated cone shape.

[0015] Preferably, the end head is provided in a hexagonal prism shape.

[0016] The utility model provides a kind of limited space instrument installation temporary guide positioning pin.Compared with prior art, it has the following beneficial effects:

[0017] In the limited space instrument installation scene in the utility model, two screw holes of diagonal position of installation are randomly selected, the screw rod of two positioning pins is screwed into the selected two screw holes, the instrument is lifted to allow the mounting hole of corresponding position to be sleeved on the support rod after the end head and guide neck, at this time, other mounting holes are accurately aligned with screw holes, these mounting holes and screw holes are fixed using bolt, then positioning pin installation bolt is removed one by one using wrench, instrument installation in limited space can be conveniently and efficiently completed, the risk of instrument bumping, falling is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a structure schematic view of positioning pin in the embodiment of the utility model.

[0020] Figure 2 It is another angle structure schematic view of positioning pin in the embodiment of the utility model.

[0021] In the drawing, reference numerals are set as: screw rod 1, support rod 2, guide neck 3, end head 4. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are 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 those skilled in the art without creative labor are within the protection scope of the utility model.

[0023] This application provides a temporary guide and positioning pin for installing instruments in confined spaces, which solves the problems of low installation efficiency and risks of bumps and falls.

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] Example:

[0026] like Figure 1 , Figure 2 As shown, this utility model provides a temporary guide positioning pin for instrument installation in confined space. The positioning pin includes, from the tail end to the head end, the following components in sequence: screw 1, support rod 2, guide neck 3, and end head 4.

[0027] The screw 1, support rod 2, guide neck 3, and end 4 are coaxially arranged;

[0028] The screw 1 is used to temporarily screw into the screw hole at the installation location;

[0029] The outer diameter of the support rod 2 matches the diameter of the mounting hole of the instrument, so that the mounting hole can fit perfectly onto the support rod 2, greatly reducing the gap between the mounting hole and the support rod 2.

[0030] The diameter of the head end of the guide neck 3 is smaller than the diameter of the tail end, and it is used to guide the support rod 2 onto the mounting hole.

[0031] The end 4 provides a point of force for the rotating positioning pin, facilitating the installation and removal of the positioning pin.

[0032] like Figure 1 , Figure 2 As shown, the outer diameter of the support rod 2 is larger than the outer diameter of the screw 1.

[0033] like Figure 1 , Figure 2 As shown, the outer diameter of the support rod 2 is larger than the outer diameter of the end 4.

[0034] like Figure 1 , Figure 2 As shown, the guide neck 3 is configured as a frustum shape, which is beneficial for guiding the support rod 2 onto the mounting hole.

[0035] like Figure 1 , Figure 2 As shown, the end 4 is configured as a hexagonal prism, and the positioning pin can be driven to rotate by a hexagonal socket wrench placed on the end 4.

[0036] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0037] The utility model discloses an embodiment, in the limited space instrument installation scene, randomly select the two screw holes of installation diagonal position, and the screw rod 1 of two positioning pin is screwed into the selected two screw holes, and the instrument is lifted to make the installation hole of corresponding position pass through the end 4 and the guiding neck 3 and is sleeved on the support rod 2, at this moment, other installation holes are accurately aligned with the screw hole, and these installation holes and screw holes are fixed using the bolt, and then the positioning pin installation bolt is taken down one by one using the wrench, and instrument installation can be conveniently and efficiently completed in the limited space, and the risk of instrument knock, drop is greatly reduced.

[0038] It is to be noted that, in this document, the terms such as first and second, etc. are merely used to distinguish one entity or operation from another, and do not necessarily require or imply there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0039] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A confined space instrument installation temporary guide positioning dowel, characterized by, The positioning pin comprises, from tail end to head end, a screw rod (1), a supporting rod (2), a guide neck (3) and a head (4); The screw rod (1), the supporting rod (2), the guide neck (3) and the head (4) are coaxially arranged; The screw rod (1) is used for being screwed into a screw hole of a mounting position; An outer diameter of the supporting rod (2) matches with a hole diameter of a mounting hole of an instrument, so that the mounting hole can be just sleeved on the supporting rod (2); A head end diameter of the guide neck (3) is smaller than a tail end diameter; The head (4) provides a force point for the rotating positioning pin.

2. The confined space instrument installation temporary guide positioning dowel pin of claim 1, wherein, The outer diameter of the supporting rod (2) is greater than the outer diameter of the screw rod (1).

3. The confined space instrument installation temporary guide positioning dowel pin of claim 1, wherein, The outer diameter of the supporting rod (2) is greater than the outer diameter of the head (4).

4. The confined space instrument installation temporary guide positioning dowel pin of claim 1, wherein, The guide neck (3) is arranged in a circular truncated cone type.

5. The confined space instrument installation temporary guide positioning dowel pin of claim 1 wherein, The head (4) is arranged in a hexagonal prism type.

Images