CN104057420A - Valve rod lock nut adjustable installation tool - Google Patents

Valve rod lock nut adjustable installation tool Download PDF

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Publication number
CN104057420A
CN104057420A CN 201410254813 CN201410254813A CN104057420A CN 104057420 A CN104057420 A CN 104057420A CN 201410254813 CN201410254813 CN 201410254813 CN 201410254813 A CN201410254813 A CN 201410254813A CN 104057420 A CN104057420 A CN 104057420A
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CN
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Patent type
Prior art keywords
cylindrical body
guide hole
hole
lock nut
installation tool
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Application number
CN 201410254813
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Chinese (zh)
Inventor
贺昶明
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成都大漠石油机械有限公司
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16NLUBRICATING
    • F16N1/00Constructional modifications of parts of machines or apparatus for the purpose of lubrication

Abstract

The invention discloses a valve rod lock nut adjustable installation tool, which comprises a cylindrical body; two ends of the cylindrical body are respectively provided with an inner hexagonal inserting hole and an outer hexagonal connector; the middle part of the cylindrical body is sequentially provided with a sump, a transfusion hole and a guide hole which are communicated with one another in the axial direction; the sump is positioned at the end part where the outer hexagonal connector is positioned; the section of the sump is of a conical structure; the guide hole is communicated with the inner hexagonal inserting hole; the diameter of the guide hole is greater than the diameter of the transfusion hole; the peripheral surface of the cylindrical body is also provided with an open slot communicated with the guide hole in the axial direction; the guide hole is internally provided with a positioning convex piece; a compression screw radially penetrates through the open slot and is then connected with the positioning convex piece through screw threads; the positioning convex piece can move in the axial direction in the guide hole, and can be compressed and fixed by the compression screw. By adopting the adjustable installation tool disclosed by the invention, the lock nut can be well positioned, labor force and material resources are saved, the adjustable installation tool can be used for installing lock nuts at different positions, and the practicability is high.

Description

阀杆锁紧螺母的可调安装工具 Adjustable stem lock nut installation tool

技术领域 FIELD

[0001] 本发明涉及一种石油设备辅助装配工具,属石油领域,更具体的说是涉及一种阀杆锁紧螺母的可调安装工具。 [0001] The present invention relates to a device for assisting assembly tool oil, oil belongs to the field, more particularly, to an adjustable stem lock nut installation tool.

背景技术 Background technique

[0002] 石油阀门在装配后需要进行压力和密封测试,在测试后石油阀门与电动装置连接后还需要调试阀杆量程,在对阀杆量程进行调试时需要将量程预先设定一个最大量程和最小量程,在设定最大量程时最简便的方法就是在阀杆最大量程处加设一个锁紧螺母,通过锁紧螺母来显著阀杆量程,而在锁紧螺母的安装时,一般都是通过卷尺找准量程位置并人工将锁紧螺母锁紧,在每次设定时都需要如此,不仅给设定带来了不便,工作量较大,设定麻烦,且锁紧螺母锁紧位置存在误差,可能导致阀杆过度升降而卡死、损坏电动装置和阀门的问题。 [0002] Oil valves require a seal pressure test after assembly and after the test oil and the electric valve means connected to the valve stem need debugging range, while the range of the valve stem necessary to debug a predetermined range and the maximum range minimum span, the maximum span is set at the most convenient way is applied at a maximum range in the stem is provided a lock nut, the lock nut by a stem to a significant range, and when the lock nut is mounted, usually by tape measure and identify the range position manually lock nut, every time you need to set this, not only to set the inconvenience, larger workload, set the trouble, and lock nut locking position exists errors, may lead to excessive stem and stuck down, damage to the valve means and the electrical problems. 现有的锁紧螺母安装工具都是与相同型号的阀杆和螺母匹配的,当安装不同定位位置的螺母时,就需要跟换相应型号的工具进行安装,不利于高效安装。 Conventional lock nut installation tool is of the same type of matching stem and the nut, the nut when mounting positions of the different positioning, with the need to change the corresponding type of installation tool, is not conducive to efficient installation.

发明内容 SUMMARY

[0003] 本发明提供了一种阀杆锁紧螺母的可调安装工具,解决了以往的安装工具只能用于同一定位位置的锁紧螺母安装,不能用于不同定位位置的锁紧螺母安装的问题。 [0003] The present invention provides an adjustable stem lock nut installation tool, to solve the conventional installation tool can only be used for mounting the lock nut positioned in the same position, for locking the nut can not be positioned in different positions of installation The problem.

[0004] 为解决上述的技术问题,本发明采用以下技术方案:阀杆锁紧螺母的可调安装工具,包括圆柱主体,圆柱主体两端分别设置内六角插孔和外六角接头,所述圆柱主体中部沿轴向依次设置连通的集液槽、输液孔及导向孔,所述集液槽位于外六角接头所在端的端部, 且所述集液槽截面呈锥形结构,所述导向孔与内六角插孔连通,所述导向孔的直径大于输液孔的直径,所述圆柱主体圆周面沿轴向方向还设置有与导向孔连通的开口槽,所述导向孔内部设置有定位顶块,压紧螺钉径向穿过开口槽后与定位顶块螺纹连接,所述定位顶块可在导向孔内轴向移动且可通过压紧螺钉压紧固定。 [0004] In order to solve the above technical problem, the present invention employs the following technical solution: an adjustable stem lock nut installation tool comprising a cylindrical body, the cylindrical body are respectively provided at both ends of the inner and outer hexagon hexagon socket joint, said cylindrical the central body in the axial direction are sequentially disposed sump communication, the infusion hole and the guide hole, and the collection tank located at the ends of the joint where the ends of the outer hexagon and the conical sump sectional structure, and a guide hole hexagon socket communication within the guide hole is larger than a diameter of the infusion hole, the circumferential surface of the cylindrical body in the axial direction is also provided with a slot opening communicating with the guide hole, the guide hole is provided with a positioning inner top block, after radial compression screw connector slot through the opening and the positioning screw top block, said top block is positioned in the guide hole axially movable and can be pressed and fixed by a pressing screw.

[0005] 所述圆柱主体位于输液孔的外侧圆周面径向设置有两个对称设置的盲孔。 The [0005] outside circumferential surface of the cylindrical body positioned radially infusion hole is provided with a blind bore two symmetrically arranged.

[0006] 所述圆柱主体位于输液孔的外侧圆周面还径向设置有两个对称设置的螺纹孔。 The [0006] outside circumferential surface of the cylindrical body infusion hole positioned radially further provided with two symmetrically arranged threaded holes.

[0007] 所述圆柱主体外圆周面还设置有网纹滚花。 The [0007] peripheral surface of the outer cylindrical body is also provided with a knurled texture.

[0008] 所述圆柱主体采用铬锰合金钢制成。 [0008] The cylindrical body is made of chrome-manganese steel.

[0009] 与现有技术相比,本发明的有益效果是:本发明设计的这种阀杆锁紧螺母的可调安装工具,不仅结构简单,装卸方便,且可很好的定位锁紧螺母的位置,节约了人力和物力, 可用于不同定位位置的锁紧螺母安装,实用性强。 [0009] Compared with the prior art, the beneficial effects of the present invention are: the present invention is designed such adjustable stem lock nut installation tool, not only simple in structure, easy handling, and may be well-positioned to lock nut position, saving manpower and material resources, for locking the nut can be positioned in different positions of installation, practical.

附图说明 BRIEF DESCRIPTION

[0010] 下面结合附图和具体实施方式对本发明作进一步详细说明。 [0010] Hereinafter, the present invention is described in further detail in conjunction with accompanying drawings and specific embodiments.

[0011] 图1为本发明的剖视图。 Cross-sectional view of the present invention [0011] FIG.

[0012] 图2为本发明图1的俯视图。 [0012] FIG. 2 is a plan view of the present invention, FIG.

[0013] 图中的标号分别表示为:1、外六角接头;2、盲孔;3、螺纹孔;4、圆柱主体;5、开口槽;6、压紧螺钉;7、内六角插孔;8、集液槽;9、输液孔;10、导向孔;11、定位顶块。 [0013] FIG numerals are indicated as: 1, hex joint; 2, blind hole; 3, threaded holes; 4, the cylindrical body; 5, opening groove; 6, the compression screw; 7, hexagon socket; 8, sump; 9, the infusion holes; 10, guide holes; 11, locating the top block.

具体实施方式 detailed description

[0014] 下面结合附图对本发明作进一步的说明。 [0014] The following drawings further illustrate the present invention in combination.

[0015] 实施例1 如图1、图2所示的阀杆锁紧螺母的可调安装工具,包括圆柱主体4,圆柱主体4两端分别设置内六角插孔7和外六角接头1,所述圆柱主体4中部沿轴向依次设置连通的集液槽8、输液孔9及导向孔10,所述集液槽8位于外六角接头1所在端的端部,且所述集液槽8截面呈锥形结构,所述导向孔10与内六角插孔7连通,所述导向孔10的直径大于输液孔9的直径,所述圆柱主体4圆周面沿轴向方向还设置有与导向孔10连通的开口槽5,所述导向孔10内部设置有定位顶块11,压紧螺钉6径向穿过开口槽5后与定位顶块11螺纹连接,所述定位顶块11可在导向孔10内轴向移动且可通过压紧螺钉6压紧固定。 Stem adjustable lock nut installation tool shown in FIG. 1, 2 [0015] Example Figure 1, includes a cylindrical body 4, both ends of the inner cylinder main body 4 and 7 are respectively provided hex hex socket connector 1, the said central cylindrical body 4 in the axial direction are sequentially disposed in the sump in communication 8, the infusion holes 10 and the guide hole 9, the sump 8 located at the end portion where the hex end fitting 1, and set the cross-sectional form of tank 8 tapered structure, the guide hole 10 communicating with the hexagon socket 7, the diameter of the guide hole 10 is greater than the diameter 9 of the infusion, the circumferential surface of the cylindrical body 4 in the axial direction is also provided with a guide hole 10 communicating with the guide hole 11 may be 10 within the opening groove 5, the guide hole 10 is provided inside the top of the positioning block 11, radially through the compression screw 6 is connected to the top of the positioning screw 11 blocks the opening groove 5, the positioning block top 6 may be axially moved and are pressed and fixed by a pressing screw.

[0016] 本实施例使用时,将锁紧螺母预先旋入部分到阀杆上,然后通过内六角插孔7与锁紧螺母配合,手持圆柱主体4转动圆柱主体4,通过圆柱主体4转动带动锁紧螺母转动, 从而将锁紧螺母旋进,导向孔10用于引导阀杆,在旋进时阀杆上端通过定位顶块11卡紧限位,从而达到锁紧螺母的定位位置,当定位螺母定位好后将工具取出即可;在取出定位螺母时也可采用本工具;本实施例在旋进螺母时可在外六角接头1上套接手轮,工作人员可手握手轮转动圆柱主体4,省时省力,且手轮可随意取下,不占空间;在旋进锁紧螺母时如出现旋进困难、卡塞等情况,可在集液槽8内加入润滑液,润滑液通过输液孔9和导向孔10流入阀杆和锁紧螺母接触面,起到润滑作用,减少螺母旋进难度。 When using the embodiment embodiment, the lock nut is screwed into the previously [0016] This section to the valve stem, and a hexagonal nut engaging with the locking jack 7, the cylindrical body 4 held rotatable cylindrical body 4, driven by the rotation of the cylindrical body 4 through the inner lock nut is rotated, so that the lock nut is screwed into the guide hole 10 for guiding the stem, the upper end of stem 11 by locating the top block when the clamping screw into the stopper, so as to achieve localization position of the lock nut, when the positioning Orienting the nut can be removed after the tool; positioning nut upon removal tools may also be present; in this embodiment, when the nut is screwed into the outer sleeve to take over the joint 1 hex wheel staff can shaking hands wheel rotatable cylindrical body 4, saving time and effort, and the hand wheel can easily be removed, not the space; precession as difficulties when screwed into the lock nut, jam situation, etc., may be added to the lubricating fluid in the sump 8, the lubricating fluid through the infusion holes 9 and 10 flows into the stem guide hole and locknut contact surface, lubricate, reduce difficulty into the nut.

[0017] 本实施例当对不同型号的锁紧螺母进行安装时,由于锁紧螺母的定位位置不同, 则阀杆上端伸出的长度也有差异,为了使得工具能用于多种定位位置的螺母安装,本实施例中可通过调整定位顶块11在导向孔10内的位置,从而限制阀杆上端的顶部位置,从而可以满足不同定位位置的螺母安装,实用性强。 [0017] Examples of the present embodiment, when installed in different types of lock nuts, due to the different lengths of the lock nut positioning position, the upper end of the stem extends also varies, so that the tool can be used for various positioning nut position mounting, this embodiment may be positioned by adjusting the position of the top block 11 in the present embodiment the guide hole 10, thereby limiting the top position of the upper end of the stem, so that the nut to meet different installation position location, practical.

[0018] 本实施例通过上述结构,可很方便的进行锁紧螺母的装卸,且通过导向孔10可定位锁紧螺母的定位位置,锁紧螺母装配误差较小,且在旋转圆柱主体4时可在外六角接头1内套入手轮,减少旋进时间和难度,且还可加入润滑液对阀杆和锁紧螺母进行润滑,减少了旋进阻力,不仅保护了阀杆螺纹,且可提高螺母旋进速度,安全、高效,实用性强。 [0018] In this embodiment, the above-described configuration, can be easily attached to and detached the lock nut, and the guide hole 10 may be positioned by positioning the position of the lock nut, the lock nut assembly error is small, and the rotary cylindrical body 4:00 1 may be the outer joint hexagonal inner sleeve to the handwheel, reduce precession time and difficulty, and lubricant may be added to the stem and lock nut lubrication, reduces precession resistance, not only to protect the stem threads, and the nut can be improved The precession speed, safe, efficient and practical.

[0019] 实施例2 实施例在实施例1的基础上增加了以下结构,具体为:所述圆柱主体4位于输液孔9的外侧圆周面径向设置有两个对称设置的盲孔2。 Example 2 [0019] Example Example 1 based on the increase of the structure, specifically: said cylindrical outer circumferential surface of the body 4 is located radially infusion hole 9 is provided with two symmetrically arranged blind hole 2.

[0020] 本实施例盲孔2内可插入带螺纹的直杆,在用手轮旋进力矩较大而旋进较慢或螺母阻力较大时,工作人员可手握两个盲孔2内的直杆,通过直杆来转动圆柱主体4,可减少定位难度,节约人力。 [0020] Straight 2 embodiment can be inserted into a threaded blind hole of the present embodiment, the handwheel is screwed into a larger torque nut screwed into slow or greater resistance, the staff can grip two blind holes 2 straight bar, by rotation of the cylindrical body 4 straight bars, reduces the difficulty of positioning, saving manpower.

[0021] 实施例3 本实施例在实施例1或实施例2的基础上做了如下优化:所述圆柱主体4位于输液孔9的外侧圆周面还径向设置有两个对称设置的螺纹孔3。 [0021] Example 3 This example makes the following optimization based on Example 1 or Example 2 of the embodiment: said cylindrical outer circumferential surface of the body 4 is located further radially infusion holes 9 provided with two symmetrically arranged threaded holes 3.

[0022] 本实施例考虑到工具旋进锁紧螺母时存在一定阻力,为方便旋紧,一般安装人人员为施加一个向下的压力,安装人人员在长久安装后耗力较大,双手极易疲劳,因此,为减少安装人员的工作强度,使安装更加省力,可在螺纹孔3螺纹连接具有一定重量的加重块, 用于加强工具向下的重量,减少安装人员的工作强度,提高了安装效率和质量,实用性强。 [0022] The present embodiment considers the presence of the tool into a lock nut screwed into some resistance, to facilitate the tightening, the art generally installer to apply a downward pressure, the installation personnel who install long after consuming a large, very hands fatigue, therefore, to reduce the intensity of work installation personnel to make more effort to install, can be connected to a certain block having heavier weight at the thread of the threaded hole 3, for reinforcing the downward weight of the tool, reduce the intensity of work for installation personnel, to improve the installation efficiency and quality, practical.

[0023] 实施例4 本实施例在上述任一实施例的基础上做了如下优化:所述圆柱主体4外圆周面还设置有网纹滚花。 [0023] Example 4 as optimized made based on the embodiment of any of the above embodiments on: the peripheral surface of the cylindrical body 4 is further provided with an outer knurled textured.

[0024] 本实施例考虑到安装人员手部沾有油渍,在用手部旋进螺母时需要使用手套和抹布来旋进,且旋进时摩擦力较小,手部易打滑,影响安装,因此特在圆柱主体4外圆周面还设置有网纹滚花,用于增加手部与圆柱主体4的摩擦力,便于安装。 [0024] The present embodiment considers the installer grease stained hand, when the hand is screwed into the nut portion and the need to use gloves rag precession, the precession time and less friction, slippery hand, affect the installation, Thus Laid cylindrical outer circumferential surface of the main body 4 is also provided with a knurled texture, hand for increasing the friction with the cylinder body 4, easy to install.

[0025] 实施例5 本实施例在上述任一实施例的基础上优化了圆柱主体,具体为:所述圆柱主体4采用铬锰合金钢制成。 [0025] Example 5 Optimization of the cylindrical body based embodiment of the embodiment of the any of the above, specifically: a cylindrical body 4 made of chrome-manganese steel.

[0026] 本实施例中的圆柱主体4的内六角插孔5和外六角接头1长期使用存在磨损,久而久之可能会损坏,且由于工具一般在工厂使用,受环境影响极易受腐,因此,本实施例将圆柱主体4采用铬锰合金钢制成,铬锰合金钢强度高、耐腐蚀和耐磨损,可满足工具长久使用而不会变形,使用寿命大为延长。 [0026] The cylindrical body of the present embodiment example 4 Hexagon Hexagon socket connector 1 and 5 long-term use for wear over time may be damaged, and because the tool is generally used in the factory, highly susceptible to rot affected by the environment, and therefore, the present embodiment uses a cylindrical body 4 made of chromium-manganese steel, high chromium-manganese steel strength, resistance to corrosion and wear resistance to meet the long-term use without deforming tool, service life considerably extended.

[0027] 如上所述即为本发明的实施例。 [0027] As described above is the embodiment of the present invention. 本发明不局限于上述实施方式,任何人应该得知在本发明的启示下做出的结构变化,凡是与本发明具有相同或相近的技术方案,均落入本发明的保护范围之内。 The present invention is not limited to the above embodiments, and any structural changes that should be made in light of the present invention, the present invention all have the same or similar technical solutions, all fall within the scope of the present invention.

Claims (5)

  1. 1. 阀杆锁紧螺母的可调安装工具,其特征在于:包括圆柱主体(4),圆柱主体(4)两端分别设置内六角插孔(7)和外六角接头(1),所述圆柱主体(4)中部沿轴向依次设置连通的集液槽(8)、输液孔(9)及导向孔(10),所述集液槽(8)位于外六角接头(1)所在端的端部, 且所述集液槽(8)截面呈锥形结构,所述导向孔(10)与内六角插孔(7)连通,所述导向孔(10)的直径大于输液孔(9)的直径,所述圆柱主体(4)圆周面沿轴向方向还设置有与导向孔(10)连通的开口槽(5),所述导向孔(10)内部设置有定位顶块(11),压紧螺钉(6)径向穿过开口槽(5)后与定位顶块(11)螺纹连接,所述定位顶块(11)可在导向孔(10)内轴向移动且可通过压紧螺钉(6)压紧固定。 1. Stem adjustable lock nut installation tool comprising: a cylindrical body (4), the cylindrical body (4) are provided at both ends of the hexagon socket (7) and the hex fitting (1), the the cylindrical body (4) are sequentially disposed axially central collection tank (8) communicating with the infusion hole (9) and the guide hole (10), said sump (8) located at the outer end of the hex fitting (1) where the end section, and the sump (8) is tapered cross-sectional configuration, said guide hole (10) in communication with the hexagon socket (7), said guide hole (10) is greater than the diameter of the infusion holes (9) diameter, said cylindrical body (4) in the axial direction of the circumferential surface is also provided with an internal guide is provided with holes (10) communicating with an open slot (5), said guide hole (10) positioning the ejector block (11), pressure after the screws (6) opening radially through the slot (5) screwed to the top positioning block (11), positioning the top block (11) axially movable within a guide hole (10) and by the pressure screw (6) pressed and fixed.
  2. 2. 根据权利要求1所述的阀杆锁紧螺母的可调安装工具,其特征在于:所述圆柱主体(4)位于输液孔(9)的外侧圆周面径向设置有两个对称设置的盲孔(2)。 The stem of claim 1 adjustable lock nut installation tool as claimed in claim, wherein: said cylindrical body (4) is located radially outside circumferential surface of the infusion holes (9) is provided with two symmetrically arranged a blind hole (2).
  3. 3. 根据权利要求1所述的阀杆锁紧螺母的可调安装工具,其特征在于:所述圆柱主体(4)位于输液孔(9)的外侧圆周面还径向设置有两个对称设置的螺纹孔(3)。 The valve stem according to claim 1 adjustable lock nut installation tool, characterized in that: said cylindrical body (4) located in the infusion hole (9) of the outer circumferential surface is also provided with two radially symmetrically disposed threaded holes (3).
  4. 4. 根据权利要求1所述的阀杆锁紧螺母的可调安装工具,其特征在于:所述圆柱主体(4)外圆周面还设置有网纹滚花。 The stem of claim 1 adjustable lock nut installation tool as claimed in claim, characterized in that: (4) an outer circumferential surface of the cylindrical body is further provided with a knurled texture.
  5. 5. 根据权利要求1所述的阀杆锁紧螺母的可调安装工具,其特征在于:所述圆柱主体(4)采用铬锰合金钢制成。 The stem of claim 1 adjustable lock nut installation tool as claimed in claim, wherein: said cylindrical body (4) manganese-chrome alloy steel.
CN 201410254813 2014-06-10 2014-06-10 Valve rod lock nut adjustable installation tool CN104057420A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN 201410254813 CN104057420A (en) 2014-06-10 2014-06-10 Valve rod lock nut adjustable installation tool

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214987A (en) * 1992-04-14 1993-06-01 Fenton Sr John J Screw fastener and driving tool
US6363596B1 (en) * 1999-02-27 2002-04-02 Robert Bosch Gmbh Mounting/demounting device for mounting and/or demounting a fuel injection valve
CN202174556U (en) * 2011-07-08 2012-03-28 菲利浦·方皓德 Installation Tools
CN202378002U (en) * 2011-12-21 2012-08-15 中国长江三峡集团公司 Device for mounting sensor in counter bore
CN103264373A (en) * 2013-05-31 2013-08-28 徐州徐工挖掘机械有限公司 Device for assembling and disassembling hose connector
CN203371435U (en) * 2013-07-14 2014-01-01 李志群 Socket spanner
CN203863626U (en) * 2014-06-10 2014-10-08 成都大漠石油机械有限公司 Adjustable positioning and installing tool for locking nut of valve rod

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214987A (en) * 1992-04-14 1993-06-01 Fenton Sr John J Screw fastener and driving tool
US6363596B1 (en) * 1999-02-27 2002-04-02 Robert Bosch Gmbh Mounting/demounting device for mounting and/or demounting a fuel injection valve
CN202174556U (en) * 2011-07-08 2012-03-28 菲利浦·方皓德 Installation Tools
CN202378002U (en) * 2011-12-21 2012-08-15 中国长江三峡集团公司 Device for mounting sensor in counter bore
CN103264373A (en) * 2013-05-31 2013-08-28 徐州徐工挖掘机械有限公司 Device for assembling and disassembling hose connector
CN203371435U (en) * 2013-07-14 2014-01-01 李志群 Socket spanner
CN203863626U (en) * 2014-06-10 2014-10-08 成都大漠石油机械有限公司 Adjustable positioning and installing tool for locking nut of valve rod

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