WO2021244320A1 - 一种开口液压扳手 - Google Patents

一种开口液压扳手 Download PDF

Info

Publication number
WO2021244320A1
WO2021244320A1 PCT/CN2021/095093 CN2021095093W WO2021244320A1 WO 2021244320 A1 WO2021244320 A1 WO 2021244320A1 CN 2021095093 W CN2021095093 W CN 2021095093W WO 2021244320 A1 WO2021244320 A1 WO 2021244320A1
Authority
WO
WIPO (PCT)
Prior art keywords
open
pawl
hydraulic
hydraulic cylinder
motor
Prior art date
Application number
PCT/CN2021/095093
Other languages
English (en)
French (fr)
Inventor
李侃
刘昇
李骏
王保国
黄伟
陈俊远
郭登飞
曹克丰
刘训茂
童章顺
Original Assignee
江苏金陵智造研究院有限公司
南京晨光集团有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏金陵智造研究院有限公司, 南京晨光集团有限责任公司 filed Critical 江苏金陵智造研究院有限公司
Publication of WO2021244320A1 publication Critical patent/WO2021244320A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers

Definitions

  • the invention relates to a hydraulic wrench, in particular to an open hydraulic wrench suitable for threaded connection.
  • Threaded connection is widely used in modern industry, construction and other industries because of its reliability, convenience and detachability.
  • the shape and length of various threaded workpieces are different, and the environmental conditions for use are also more complicated.
  • the existing hydraulic wrench is in a closed form, is suitable for regular edge shapes, and has a slow tightening speed, so its use scenarios are greatly restricted.
  • the screw tightening can be divided into two processes, the make-up process with a small torque but a long rotation stroke and the tightening process with a large torque but a short rotation stroke.
  • the purpose of the present invention is to provide an open-ended hydraulic wrench with a wide range of usage scenarios.
  • an open hydraulic wrench for realizing threaded connection including a motor-open gear set mechanism, a hydraulic cylinder-ratchet pawl mechanism, a clamping mechanism, a reset mechanism and an in-position mechanism;
  • the motor-open gear set mechanism includes a motor and an open gear set.
  • the open gear set is composed of a driving wheel, two idlers and an open gear, and is used to complete the buckling process;
  • the hydraulic cylinder-ratchet and pawl mechanism is driven by the hydraulic cylinder, and the open ratchet is driven to rotate intermittently through the ratchet and pawl mechanism to complete the tightening process with a predetermined torque;
  • the motor-open gear set mechanism, hydraulic cylinder-ratchet and pawl mechanism are integrated in the housing and the cover plate;
  • the clamping mechanism is used to achieve clamping of the target
  • the reset mechanism is used to align the open gear and the open ratchet with the opening position of the housing when the wrench is reversed and reset;
  • the positioning mechanism is used to control the maximum extension stroke of the hydraulic cylinder.
  • the hydraulic cylinder-ratchet pawl mechanism includes a hydraulic cylinder, a pawl, a support block and an open ratchet, the pawl is connected with the front end of the piston rod of the hydraulic cylinder through a pin, and the support block is fixed inside the housing , To support and guide the pawl, and transmit the radial reaction force of the pawl to the housing.
  • the clamping mechanism is located between the split gear and the split ratchet, and is connected with the two through a stepped pin to form an actuator; the actuator is driven by the split gear set or the pawl to drive the clamped workpiece to achieve rotation and tightening .
  • the upper side of the open ratchet wheel and the lower side of the open gear each have a stepped surface, and the upper and lower stepped surfaces are matched with the open right-angle annular oil-free bearing to realize the axial and radial positioning of the actuator.
  • the actuator is installed at the corresponding front opening of the hydraulic wrench, and the hydraulic cylinder and the motor are installed at the rear of the hydraulic wrench.
  • the positioning mechanism is a position detection sensor, which controls the maximum extension stroke of the hydraulic cylinder by detecting the position of the pawl pin.
  • the reset mechanism is composed of a wedge block, a spring and a limit screw.
  • the upper end of the wedge block is provided with a spring installation hole, the side surface has a limit screw groove, and the bottom surface is slope-shaped, and is installed to slide at the center line of the housing opening.
  • the spring is installed between the housing and the wedge block mounting hole to provide pre-tightening force for the wedge block; the limit screw restricts the up and down sliding stroke of the wedge block through the screw groove.
  • the middle part of the upper surface of the open ratchet is provided with a chute corresponding to the position of the wedge block.
  • the driving wheel is connected to a motor shaft through a key shaft, and the motor is a hydraulic motor or a geared motor.
  • the left rear part and the right rear part of the housing are respectively provided with a left handle and a right handle, and a control button is arranged on the right handle; A fixed knob is arranged on the mounting hole.
  • the overall structure adopts an open form, which is convenient for the workpiece to be clamped in and out, and has a wide range of applications;
  • the screw threading is completed by a hydraulic motor-open gear set mechanism In the process, a hydraulic cylinder-ratchet and pawl mechanism is used to complete the screw fastening process, which can not only complete the fastening process quickly, but also meet the torque requirements of the fastening process;
  • Integrated reset mechanism and in-position mechanism can be adjusted according to the system pressure Automatically complete the process of threading, tightening and resetting to realize automatic thread tightening;
  • All actuators, especially the oil circuit and shell of the hydraulic system are integrated into the aluminum alloy shell and cover plate, and the overall structure is compact , Light weight and good reliability.
  • Fig. 1 is a schematic diagram of an embodiment of an open-ended hydraulic wrench of the present invention.
  • Fig. 2 is a top view of the internal structure of the embodiment of the open-ended hydraulic wrench of the present invention with the casing hidden.
  • Fig. 3 is a left side view of the internal structure of the embodiment of the open-ended hydraulic wrench of the present invention with the casing hidden.
  • Fig. 4 is a schematic diagram of the reset mechanism of the embodiment of the open-ended hydraulic wrench of the present invention.
  • Fig. 5 is a schematic diagram of a ready state for use of the embodiment of the open-ended hydraulic wrench of the present invention.
  • Fig. 6 is a schematic diagram of the buckling process used in the embodiment of the open-ended hydraulic wrench of the present invention.
  • Fig. 7 is a schematic diagram of the tightening process used in the embodiment of the open-ended hydraulic wrench of the present invention.
  • an open-ended hydraulic wrench 1 includes a motor-opening gear up buckle mechanism, a hydraulic cylinder-ratchet and pawl clamping mechanism, a clamping mechanism 10, a reset mechanism 13, an in-position mechanism 18, and a crescent plate 12, and the housing 2, the cover 23, the left and right handles 3, 4, the reaction rod 5, the support block 17 and other structural parts.
  • the main mechanisms are integrated in the housing 2 and combined with the cover 23 for positioning and installation, so that the hydraulic wrench is integrated and lightweight.
  • the motor-open gear buckle mechanism includes a motor 19 and an open gear set consisting of a driving wheel 21, two idle gears 22 and an open gear 9.
  • the motor 19 is a hydraulic motor or a geared motor.
  • the driving wheel 21 is connected to the motor shaft through the key shaft 20, and the installation positions of the two idle gears 22 are calculated according to the installation conditions of the open gear set.
  • the hydraulic cylinder-ratchet pawl fastening mechanism includes a hydraulic cylinder 14, a pawl 15, a supporting block 17 and an open ratchet 8.
  • the pawl 15 is connected to the front end of the piston rod of the hydraulic cylinder through a pin 16.
  • the supporting block 17 is fixed inside the housing, supports and guides the pawl 17 and transmits the radial reaction force received by the pawl 15 to the housing.
  • the clamping mechanism 10 is located between the split gear 9 and the split ratchet 8 and is connected to the two through a pin to form an actuator.
  • the actuator can be driven by an open gear set or a pawl 15 to drive the clamped workpiece to achieve rotation and tightening.
  • the upper side of the open ratchet 8 and the lower side of the open gear 9 each have a stepped surface, and the open right-angle annular oil-free bearing 11 cooperates with the upper and lower stepped surfaces to realize the axial and radial positioning of the actuator.
  • the crescent plate 12 has an arc shape and is fixed on the inner circular surface corresponding to the opening of the split gear 9 and the split ratchet 8 by screws, and supports the workpiece to be tightened.
  • the reset mechanism includes a wedge block 1302, a spring 1301 and a limit screw 1303.
  • the wedge block 1302 is provided with a spring installation hole at the upper end, a limit screw groove is opened on the side, and the bottom surface is slope-shaped, and the wedge block 1302 is installed in the sliding groove at the center line of the housing opening.
  • the spring 1301 is installed between the housing and the wedge block installation hole to provide pre-tensioning force for the wedge block 1302.
  • the limit screw 1303 limits the up and down stroke of the wedge block 1302 through the screw groove.
  • the in-position mechanism 18 fixes the proximity switch under the above-mentioned support block 17.
  • the hydraulic cylinder 14 is extended, the pawl pin is driven forward. After reaching the maximum stroke, the lower part of the pin triggers the proximity switch, and the hydraulic cylinder 14 begins to retract the stroke. .
  • the front part of the housing is an open cavity of the actuator, and the rear part is provided with a housing cavity and an oil passage of the motor and the hydraulic cylinder, so as to realize the integration and light weight of the hydraulic wrench.
  • the oil inlet and outlet are arranged on the shell panel to facilitate the connection and disassembly of the oil circuit.
  • aluminum alloy is used as the material for the housing 2 and the cover 23, which can reduce the weight of the hydraulic wrench on the basis of ensuring the strength.
  • the left handle 3 is fixed on the left rear side of the housing 2 with four symmetrically arranged screws, and the left handle 3 can be in two states of vertical or horizontal to suit the installation of vertical and horizontal workpieces.
  • the right handle 4 is fixed on the right rear side of the housing 2, and a control button 6 is arranged on it, which is convenient for the operator to hold and manipulate.
  • the reaction rod 5 is installed in the installation hole on the housing 2 and fixed by the fixing knob 7, which can be easily disassembled and assembled.
  • the reaction rod 5 in the open hydraulic wrench transmits the reaction force generated by the tightening to the adjacent workpiece by leaning on the adjacent fixed workpiece, thereby reducing the burden on the operator.
  • the embodiment of the present invention provides an open-ended hydraulic wrench whose structure is shown in FIGS. 1 to 3.
  • the open-ended hydraulic wrench 1 provided in the example of the present invention has two left and right handles, and the left handle 3 can be in both vertical and horizontal states.
  • the left end of the right handle 4 is provided with a control button 6.
  • the left and right handles are hollow cylinders to facilitate holding and reduce the overall weight of the hydraulic wrench.
  • the reaction rod 5 is fixed in a mounting hole integrated with the housing 2 by a fixing knob 7.
  • the reaction rod 5 is arranged on the right side of the housing 2 in this embodiment, so that the hydraulic wrench 1 directly uses the adjacent fixed workpiece 26 on the front side of the reaction rod to offset the counterclockwise tightening reaction torque during use.
  • the open-ended hydraulic wrench 1 of the present invention completes the buckling process of the workpiece through a motor-open gear mechanism.
  • the motor 19 provides tightening power, and the motor 19 transmits the power to the driving gear 21 through the key shaft 20.
  • the two idlers 22 drive the split gear 9 to rotate.
  • the installation position of the idler gear 22 should satisfy the condition that the horizontal distance between the two wheels is greater than the opening width of the split gear 9 and the four-wheel drive does not interfere, so as to realize the continuous rotation of the split gear 9. Because the torque required for the buckling process is small and the strength requirements for the four gears are low, the thickness of the four gears can be small, and weight-reducing holes are provided on them.
  • the open-ended hydraulic wrench 1 of the present invention completes the fastening process of the workpiece through the hydraulic cylinder-ratchet pawl mechanism.
  • the hydraulic cylinder 14 is installed on the left side of the housing 2 to provide thrust.
  • the pawl 15 is connected to the piston rod of the hydraulic cylinder 14 through the pin 16 and pushes the split ratchet wheel 8 to rotate clockwise.
  • the hydraulic cylinder 14 drives the pawl 15 to retract, and the repeated movement of the hydraulic cylinder 14 drives the pawl to intermittently push the ratchet wheel to rotate.
  • the hydraulic wrench performs a resetting action
  • the motor reverses through the open gear set mechanism to drive the actuator to reverse, and the resetting mechanism 13 performs positioning.
  • FIG 4 The specific structure of the reset mechanism is shown in Figure 4, in which the wedge block 1302 is installed in the guide groove near the opening of the casing; the spring 1301 is installed between the casing and the guide hole of the wedge block 1302; the limit screw 1303 is fixed on the casing , Its tail is screwed into the limit groove of the wedge block.
  • the limit screw limits the sliding limit position of the wedge block.
  • the spring 1301 provides pre-pressure for the wedge block, and its length should ensure that the spring is still in a compressed state when the wedge block is in the lowest position, and the wedge block is not in a compressed state when the wedge block is in the highest position.
  • FIGs 5 to 7 are schematic diagrams of actual use of the open-ended hydraulic wrench provided by the example of the present invention for tightening a vertical workpiece.
  • Fig. 5 is a schematic diagram of preparation for use of the embodiment of the open-ended hydraulic wrench of the present invention.
  • the left handle 3 of the hydraulic wrench is adjusted to a vertical state, the operator holds the left and right handles of the open-end wrench, and long presses the switch on the right handle 4 to reset the open-end wrench.
  • the open-ended wrench is inserted into the target workpiece 24, so that the clamping mechanism of the open-ended wrench can reliably clamp the workpiece 25, and the reaction rod on the right side is leaned against the adjacent fixed workpiece 26.
  • Fig. 6 is a schematic diagram of the buckling process used in the embodiment of the open-ended hydraulic wrench of the present invention.
  • the motor 19 drives the driving gear 21 to rotate forward through the key shaft 20, and drives the split gear 9 through the two idle gears 22 to achieve continuous rotation.
  • the hydraulic wrench actuator is switched to the buckling process as shown in FIG. 7.
  • the hydraulic cylinder 14 drives the pawl 15 to extend forward and pushes the open ratchet wheel 8 to rotate forward.
  • the proximity switch is triggered, and the hydraulic cylinder 14 drives the pawl 15 to start the retracting stroke. Repeat the appeal process until the tightening torque reaches the preset value to complete the tightening process.
  • the hydraulic wrench performs a reset process to align the open gear 9 and the open ratchet 8 to the opening positions of the housing 2 and the cover 23, and then the operator takes out the open hydraulic wrench 1 to complete the tightening and installation of the target workpiece 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

Abstract

一种开口液压扳手，主要由马达-开口齿轮组机构、液压缸-棘轮棘爪机构、夹紧机构、复位机构、到位机构以及壳体、盖板、把手和反力杆组成，马达-开口齿轮组机构由液压马达或电机驱动，通过开口齿轮组带动开口齿轮连续旋转，完成快速上扣工序；液压缸-棘轮棘爪机构由液压缸驱动，通过棘轮棘爪机构推动开口棘轮间歇旋转，完成预定扭矩的紧扣工序；夹紧机构可对待安装目标进行可靠夹紧，复位机构用于液压扳手反转定位，到位机构控制液压缸最大行程。通过将螺纹连接过程分成上扣和紧扣两部分，并分别通过马达-开口齿轮组机构和液压缸-棘轮棘爪机构实现，在保证所需拧紧力矩的前提下，可以快速完成拧紧。

Description

一种开口液压扳手 技术领域
本发明涉及液压扳手，具体涉及一种适用于螺纹连接的开口液压扳手。
背景技术
螺纹连接因其可靠、便捷和可拆卸被广泛应用于现代工业、建筑等行业中。然而，各种螺纹工件形状、长度各异，使用环境条件也比较复杂。而现有的液压扳手为闭口形式，适用于规则的棱边形状，且拧紧速度慢，因此其使用场景受到很大的限制。螺纹的拧紧可以分成两个过程，需求力矩小但旋转行程长的上扣过程和需求力矩大但旋转行程短的紧扣过程。为解决上述问题，需开发一种体积小重量轻的便携开口液压扳手，且能在满足拧紧力矩的同时尽快完成螺纹拧紧。
发明内容
本发明的目的在于提供一种使用场景广泛的开口液压扳手。
实现本发明目的的技术方案为：一种用于实现螺纹连接的开口液压扳手，包括马达-开口齿轮组机构、液压缸-棘轮棘爪机构、夹紧机构、复位机构和到位机构；
所述马达-开口齿轮组机构包括马达和开口齿轮组，开口齿轮组由主动轮、两个惰轮及开口齿轮组成，用于完成上扣过程；
所述液压缸-棘轮棘爪机构由液压缸驱动，通过棘轮棘爪机构推动开口棘轮间歇旋转，完成预定扭矩的紧扣工序；
所述马达-开口齿轮组机构、液压缸-棘轮棘爪机构集成于壳体和盖板内；
所述夹紧机构用于对目标实现夹紧；
所述复位机构用于在扳手反转复位时将开口齿轮和开口棘轮与壳体开口位置对正；
所述到位机构用于控制液压缸的最大伸出行程。
进一步的，所述液压缸-棘轮棘爪机构包括液压缸、棘爪、支撑块和开口棘轮，所述棘爪与液压缸活塞杆的前端通过销轴连接，所述支撑块固定在壳体内侧，对棘爪进行支撑和导向，并将棘爪所受的径向反力传递到壳体上。
进一步的，所述夹紧机构位于开口齿轮和开口棘轮之间，并与两者通过阶梯销连接组成执行机构；执行机构通过开口齿轮组或棘爪驱动，带动被夹紧的工件，实现旋转拧紧。
进一步的，所述开口棘轮上侧和开口齿轮下侧各有一台阶面，通过开口的直角环形 无油轴承配合上下台阶面，实现执行机构的轴向和径向定位。
进一步的，所述执行机构安装于液压扳手对应的前端开口处，所述液压缸和马达安装于液压扳手后部。
进一步的，所述到位机构为位置检测传感器，通过检测棘爪销轴的位置控制液压缸的最大伸出行程。
进一步的，所述复位机构由楔形块、弹簧和限位螺钉组成，所述楔形块上端开有弹簧安装孔，侧面开有限位螺钉槽，底面为斜坡状，安装在壳体开口中心线位置滑槽中；所述弹簧安装于壳体和楔形块安装孔之间，为楔形块提供预紧力；所述限位螺钉通过螺钉槽对楔形块上下滑动的行程进行限位。
进一步的，所述开口棘轮上表面的中部设置有与楔形块位置相对应的斜槽。
进一步的，所述主动轮通过键轴与马达轴相连，所述马达为液压马达或减速电机。
进一步的，壳体左后部、右后部分别设置有左把手、右把手，右把手布置有控制按钮；反力杆安装于壳体右侧，其安装孔与壳体为一体化结构，且安装孔上设置有固定旋钮。
与现有技术相比，本发明的显著优点为：(1)整体结构采用开口形式，方便工件卡入和退出，适用范围广；(2)以液压马达-开口齿轮组机构完成螺纹的上扣工序，以液压缸-棘轮棘爪机构完成螺纹的紧扣工序，既可快速完成上扣过程，也能满足紧扣过程的力矩需求；(3)集成有复位机构和到位机构，可根据系统压力自动完成螺纹的上扣、紧扣以及复位过程，实现螺纹自动化拧紧；(4)将所有执行机构，特别是液压系统的油路和壳体集成于铝合金壳体和盖板中，整体结构紧凑，重量轻，可靠性好。
附图说明
图1是本发明开口液压扳手实施例的外形示意图。
图2是本发明开口液压扳手实施例隐藏壳体后的内部结构俯视图。
图3是本发明开口液压扳手实施例隐藏壳体后的内部结构左视图。
图4是本发明开口液压扳手实施例复位机构示意图。
图5是本发明开口液压扳手实施例使用的准备状态示意图。
图6是本发明开口液压扳手实施例使用的上扣过程示意图。
图7是本发明开口液压扳手实施例使用的紧扣过程示意图。
附图标记说明：1.开口液压扳手，2.壳体，3.左把手，4.右把手，5.反力杆，6.控制 按钮，7.固定旋钮，8.开口棘轮，9.开口齿轮，10.夹紧机构，11.直角开口无油轴承，12.月牙板，13.复位机构，1301.弹簧，1302.楔形块，1303.限位螺钉，14.液压缸，15.棘爪，16.销轴，17.支撑块，18.到位机构，19.马达，20.键轴，21.主动轮，22.惰轮，23.盖板，24.目标工件，25.待安装工件，26.相邻固定工件。
具体实施方式
如图1、图2所示，一种开口液压扳手1，包括马达-开口齿轮上扣机构、液压缸-棘轮棘爪紧扣机构、夹紧机构10、复位机构13、到位机构18、月牙板12，以及壳体2、盖板23，左右把手3、4，反力杆5，支撑块17等结构件。各主要机构集成于壳体2之中，结合盖板23进行定位安装，使得液压扳手集成化，轻量化。
所述马达-开口齿轮上扣机构包括马达19和由主动轮21、两个惰轮22及开口齿轮9组成的开口齿轮组。所述马达19为液压马达或者减速电机。所述开口齿轮组中，主动轮21通过键轴20与马达轴相连，两个惰轮22根据开口齿轮组安装条件计算安装位置。
所述液压缸-棘轮棘爪紧扣机构包括液压缸14，棘爪15，支撑块17和开口棘轮8。所述棘爪15与液压缸活塞杆的前端通过销轴16连接。所述支撑块17固定在壳体内侧，对棘爪17进行支撑和导向，并将棘爪15所受的径向反力传递到壳体上。
所述夹紧机构10位于开口齿轮9和开口棘轮8之间，并与两者通过销连接组成执行机构。执行机构可通过开口齿轮组或棘爪15驱动，带动被夹紧的工件，实现旋转拧紧。
所述开口棘轮8上侧和开口齿轮9下侧各有一台阶面，通过开口的直角环形无油轴承11配合上下台阶面，实现执行机构的轴向和径向定位。
所述月牙板12为圆弧形，通过螺钉固定在开口齿轮9和开口棘轮8开口对应的内圆面上，对待拧紧工件起支撑作用。通过更换不同厚度的月牙板12，再配合上述夹紧机构10，可使开口液压扳手实现对不同直径规格工件的定心夹紧。
所述复位机构包括楔形块1302，弹簧1301和限位螺钉1303。所述楔形块1302上端开有弹簧安装孔，侧面开有限位螺钉槽，底面为斜坡状，将其安装在壳体开口中心线位置滑槽中。所述弹簧1301安装于壳体和楔形块安装孔之间，为楔形块1302提供预紧力。所述限位螺钉1303通过螺钉槽对楔形块1302上下滑动的行程进行限位。当液压扳手1反转到位后，所述楔形块1302在弹簧压力作用下，滑到开口棘轮8表面相应的斜槽处，使开口棘轮8停止反转。当扳手正转通过棘轮表面的斜槽时，所述楔形块1302 可克服弹簧压力顺着斜槽滑动并顺利通过斜槽。
所述到位机构18是将接近开关固定于上述支撑块17下方，液压缸14伸出时带动棘爪销轴前行，至最大行程后，销轴下部触发接近开关，液压缸14开始缩回行程。
所述壳体前部为执行机构的开口型腔，后部设有马达和液压缸的外壳型腔和油路孔道，实现液压扳手的集成化和轻量化。并将进出油口布置于壳体面板上，方便油路连接和拆卸。此外，所述壳体右侧还有一体化的反力杆安装孔。优选地，所述壳体2与盖板23选用铝合金作为材料，可在保证强度的基础上，减轻液压扳手的重量。
所述左把手3以四颗对称布置的螺钉固定在壳体2的左后侧，所述左把手3可为竖直或水平两种状态，以适应竖直和水平工件的安装。所述右把手4固定于壳体2右后侧，其上布置有控制按钮6，便于操作人员把持和操控。
所述反力杆5安装于壳体2上的安装孔中，并通过固定旋钮7固定，可方便的拆装。反力杆5在开口液压扳手中通过搭靠在相邻固定工件上将拧紧产生的反力传递到相邻工件上，减轻操作员的负担。
以下，参照附图对实施例进行说明。下面所示的实施例不对权利要求所记载的发明内容起任何限定作用。此外，下面实施例所表示的构成的全部内容不限于作为权利要求所记载的发明的解决方案所必须的。
实施例
本发明实施例提供一种开口液压扳手，其结构参考图1至图3所示，本发明实例提供的开口液压扳手1具有左右两个把手，其中左把手3可在竖直和水平两种状态之间更换，右把手4的左端部设置有控制按钮6。优选的，左右把手为中空圆柱体，便于握持并降低液压扳手整体重量。反力杆5通过固定旋钮7固定在与壳体2一体的安装孔中。优选的，反力杆5在本实施例中设置在壳体2右侧，方便液压扳手1在使用过程中直接借助反力杆前侧的相邻固定工件26抵消逆时针方向的拧紧反力矩。本发明的开口液压扳手1通过马达-开口齿轮机构完成工件的上扣过程。其中，马达19提供拧紧动力，马达19通过键轴20将动力传递到主动齿轮21中。然后通过两个惰轮22，带动开口齿轮9旋转。惰轮22安装位置应满足两轮之间的水平距离大于开口齿轮9开口宽度，且四轮传动不干涉的条件，以实现开口齿轮9的连续旋转。由于上扣过程所需力矩较小，对四个齿轮的强度要求较低，因此四个齿轮厚度可以较小，并在其上设置减重孔。本发明的开口液压扳手1通过液压缸-棘轮棘爪机构完成工件的紧扣过程。其中，液压缸14安装 于壳体2左侧，提供推力。棘爪15通过销轴16与液压缸14的活塞杆相连，并推动开口棘轮8顺时针旋转。当销轴前行触发接近开关后，液压缸14带动棘爪15缩回，通过液压缸14的反复运动带动棘爪间歇地推动棘轮旋转。当液压扳手进行复位动作时，马达反转通过开口齿轮组机构带动执行机构反转，并由复位机构13进行定位。
复位机构具体结构如图4所示，其中楔形块1302安装于壳体开口附近的导向槽中；弹簧1301安装于壳体和楔形块1302的导向孔之间；限位螺钉1303固定在壳体上，其尾部拧入楔形块的限位槽中。限位螺钉限制楔形块滑动极限位置。弹簧1301为楔形块提供预压力，其长度应保证弹簧在楔形块最低位置时仍处于压紧状态，且楔形块在最高位置时未到压并状态。
图5到图7为本发明实例提供的开口液压扳手用于竖向工件拧紧的实际使用示意图。如图5所示为本发明开口液压扳手实施例使用的准备示意图。液压扳手左把手3调整为竖直状态，操作员手持开口扳手的左右把手，并长按右把手4上的开关将开口扳手复位。随后，将开口扳手套入所述目标工件24中，使得开口扳手的夹紧机构可靠的夹紧工件25，并将右侧的反力杆靠在所述相邻固定工件26上。准备工作完成后，操作员点按右把手上的控制按钮6，开始拧紧过程。如图6所示为本发明开口液压扳手实施例使用的上扣过程示意图。马达19通过键轴20带动主动齿轮21正转，经由两个惰轮22带动开口齿轮9实现连续旋转。当马达19堵转时，上扣过程完成，液压扳手执行机构切换到如图7所示的紧扣过程。紧扣过程中，液压缸14带动棘爪15向前伸出，并推动开口棘轮8正向旋转。当液压缸14伸出行程达到最大时，接近开关被触发，液压缸14带动棘爪15开始缩回行程。重复上诉过程直到拧紧力矩达到预设值，完成紧扣过程。拧紧完成后，液压扳手进行复位过程，将开口齿轮9和开口棘轮8对正壳体2和盖板23的开口位置，随后操作员将开口液压扳手1取出，完成目标工件24的拧紧安装。

Claims (10)

  1. 一种用于实现螺纹连接的开口液压扳手，其特征在于，包括马达-开口齿轮组机构、液压缸-棘轮棘爪机构、夹紧机构(10)、复位机构(13)和到位机构(18)；
    所述马达-开口齿轮组机构包括马达(19)和开口齿轮组，开口齿轮组由主动轮(21)、两个惰轮(22)及开口齿轮(9)组成，用于完成上扣过程；所述液压缸-棘轮棘爪机构由液压缸(14)驱动，通过棘轮棘爪机构推动开口棘轮(8)间歇旋转，完成预定扭矩的紧扣工序；所述马达-开口齿轮组机构、液压缸-棘轮棘爪机构集成于壳体(2)和盖板(23)内；所述夹紧机构(10)用于对目标实现夹紧；所述复位机构(13)用于在扳手反转复位时将开口齿轮(9)和开口棘轮(8)与壳体(2)开口位置对正；所述到位机构(18)用于控制液压缸(14)的最大伸出行程。
  2. 根据权利要求1所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述液压缸-棘轮棘爪机构包括液压缸(14)、棘爪(15)、支撑块(17)和开口棘轮(8)，所述棘爪(15)与液压缸活塞杆的前端通过销轴(16)连接，所述支撑块(17)固定在壳体(1)内侧，对棘爪(15)进行支撑和导向，并将棘爪(15)所受的径向反力传递到壳体上。
  3. 根据权利要求2所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述夹紧机构(10)位于开口齿轮(9)和开口棘轮(8)之间，并与两者通过阶梯销连接组成执行机构；执行机构通过开口齿轮组或棘爪(15)驱动，带动被夹紧的工件，实现旋转拧紧。
  4. 根据权利要求3所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述开口棘轮(8)上侧和开口齿轮(9)下侧各有一台阶面，通过开口的直角环形无油轴承(11)配合上下台阶面，实现执行机构的轴向和径向定位。
  5. 根据权利要求4所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述执行机构安装于液压扳手对应的前端开口处，所述液压缸(14)和马达(19)安装于液压扳手后部。
  6. 根据权利要求2所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述到位机构(18)为位置检测传感器，通过检测棘爪销轴的位置控制液压缸(14)的最大伸出行程。
  7. 根据权利要求1所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述复位机构(13)由楔形块(1302)、弹簧(1301)和限位螺钉(1303)组成，所述楔形 块(1302)上端开有弹簧安装孔，侧面开有限位螺钉槽，底面为斜坡状，安装在壳体开口中心线位置滑槽中；所述弹簧(1301)安装于壳体和楔形块安装孔之间，为楔形块(1302)提供预紧力；所述限位螺钉(1303)通过螺钉槽对楔形块上下滑动的行程进行限位。
  8. 根据权利要求7所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述开口棘轮(8)上表面的中部设置有与楔形块位置相对应的斜槽。
  9. 根据权利要求1所述的用于实现螺纹连接的开口液压扳手，其特征在于，所述主动轮(21)通过键轴(20)与马达轴相连，所述马达(19)为液压马达或减速电机。
  10. 根据权利要求1所述的用于实现螺纹连接的开口液压扳手，其特征在于，壳体(2)左后部、右后部分别设置有左把手(3)、右把手(4)，右把手布置有控制按钮(6)；反力杆(5)安装于壳体(2)右侧，其安装孔与壳体(2)为一体化结构，且安装孔上设置有固定旋钮(7)。
PCT/CN2021/095093 2020-05-31 2021-05-21 一种开口液压扳手 WO2021244320A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010481241.8 2020-05-31
CN202010481241.8A CN111546278A (zh) 2020-05-31 2020-05-31 一种开口液压扳手

Publications (1)

Publication Number Publication Date
WO2021244320A1 true WO2021244320A1 (zh) 2021-12-09

Family

ID=72005153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/095093 WO2021244320A1 (zh) 2020-05-31 2021-05-21 一种开口液压扳手

Country Status (2)

Country Link
CN (1) CN111546278A (zh)
WO (1) WO2021244320A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109560674A (zh) * 2018-12-06 2019-04-02 海宁弘德机械有限公司 一种马达壳体加工找平定位夹具

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111546278A (zh) * 2020-05-31 2020-08-18 江苏金陵智造研究院有限公司 一种开口液压扳手
CN112123228A (zh) * 2020-08-31 2020-12-25 江苏金陵智造研究院有限公司 一种用于螺纹连接的快速螺纹连接设备

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056332A (zh) * 1990-05-08 1991-11-20 机械电子工业部兰州石油机械研究所 开口动力大钳
CN104889919A (zh) * 2015-06-17 2015-09-09 河北科技大学 一种钢筋与连接套螺纹连接使用的电动管钳
CN106141970A (zh) * 2015-04-08 2016-11-23 哈尼·A·阿布纳梅赫 开口棘轮扳手
US20170113333A1 (en) * 2015-10-23 2017-04-27 Joe Mascarenas Automated Pipe Wrench Assembly
CN107457736A (zh) * 2016-06-03 2017-12-12 德州德劲液压动力有限公司 一种优化型液压扭矩扳手
CN111185873A (zh) * 2020-03-17 2020-05-22 北渤智能科技秦皇岛有限公司 一种用于连接钢筋和套筒的开口式电动扳手
CN111546278A (zh) * 2020-05-31 2020-08-18 江苏金陵智造研究院有限公司 一种开口液压扳手
CN213054563U (zh) * 2020-05-31 2021-04-27 江苏金陵智造研究院有限公司 一种开口液压扳手
CN112720324A (zh) * 2020-12-31 2021-04-30 江苏金陵智造研究院有限公司 一种电液混动开口扳手

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2046155B (en) * 1979-04-11 1983-01-26 Sumitomo Metal Ind Method and apparatus for tightening nuts
CN203141398U (zh) * 2012-12-29 2013-08-21 南京德朔实业有限公司 电动扳手
CN110103011A (zh) * 2019-06-18 2019-08-09 史洪才 一种钢筋套筒拧紧机
CN110524468B (zh) * 2019-10-09 2024-04-30 长江大学 一种棘轮式液压扭矩扳手

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1056332A (zh) * 1990-05-08 1991-11-20 机械电子工业部兰州石油机械研究所 开口动力大钳
CN106141970A (zh) * 2015-04-08 2016-11-23 哈尼·A·阿布纳梅赫 开口棘轮扳手
CN104889919A (zh) * 2015-06-17 2015-09-09 河北科技大学 一种钢筋与连接套螺纹连接使用的电动管钳
US20170113333A1 (en) * 2015-10-23 2017-04-27 Joe Mascarenas Automated Pipe Wrench Assembly
CN107457736A (zh) * 2016-06-03 2017-12-12 德州德劲液压动力有限公司 一种优化型液压扭矩扳手
CN111185873A (zh) * 2020-03-17 2020-05-22 北渤智能科技秦皇岛有限公司 一种用于连接钢筋和套筒的开口式电动扳手
CN111546278A (zh) * 2020-05-31 2020-08-18 江苏金陵智造研究院有限公司 一种开口液压扳手
CN213054563U (zh) * 2020-05-31 2021-04-27 江苏金陵智造研究院有限公司 一种开口液压扳手
CN112720324A (zh) * 2020-12-31 2021-04-30 江苏金陵智造研究院有限公司 一种电液混动开口扳手

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109560674A (zh) * 2018-12-06 2019-04-02 海宁弘德机械有限公司 一种马达壳体加工找平定位夹具
CN109560674B (zh) * 2018-12-06 2023-12-29 海宁弘德机械有限公司 一种马达壳体加工找平定位夹具

Also Published As

Publication number Publication date
CN111546278A (zh) 2020-08-18

Similar Documents

Publication Publication Date Title
WO2021244320A1 (zh) 一种开口液压扳手
WO2020119660A1 (zh) 一种轮胎快速定心夹具
EP3590625B1 (en) Riveting tool chuck and riveting tool
CN107186155B (zh) 连钻连铆式拉铆枪
WO2021017548A1 (zh) 具有扭力监测的双伺服拉铆装置
CN110977569B (zh) 一种用于数控加工的快速换刀机构
CN213054563U (zh) 一种开口液压扳手
CN212287480U (zh) 一种卡齿轮的简易工装
US20170204914A1 (en) Handwheel clutch for use in machinery
CN111409041A (zh) 一种卡齿轮的简易工装及使用方法
CN101462262A (zh) 一种省力拆装螺栓的手动拆装器
CN104209912A (zh) 电动辅助扳手
CN215967186U (zh) 翻转焊接工装
US4834355A (en) Mechanical program-controlled fast range-adjusting device
CN109702677B (zh) 蘑菇状高扭力棘轮扳手
CN208451452U (zh) 单推力双面夹持机构
CN110952938A (zh) 一种自动化液压动力组合钳
CN213813168U (zh) 一种精密钣金检测装置
CN2217485Y (zh) 自攻螺丝连发器
CN220007600U (zh) 一种便于调节的扭矩扳手开口头
US20050011313A1 (en) Compact hydraulic torque wrench reaction arm
CN219617177U (zh) 一种用于旋紧结合的夹具工装
CN220312580U (zh) 一种轴承法兰面粗加工工装
CN217512800U (zh) 一种可拆卸两用拉铆枪
CN219521938U (zh) 一种便于在狭窄空间拆装的扳手

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21818259

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21818259

Country of ref document: EP

Kind code of ref document: A1