WO2008037147A1 - Système de lubrification pour piston de pompe à béton - Google Patents

Système de lubrification pour piston de pompe à béton Download PDF

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Publication number
WO2008037147A1
WO2008037147A1 PCT/CN2007/000329 CN2007000329W WO2008037147A1 WO 2008037147 A1 WO2008037147 A1 WO 2008037147A1 CN 2007000329 W CN2007000329 W CN 2007000329W WO 2008037147 A1 WO2008037147 A1 WO 2008037147A1
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WO
WIPO (PCT)
Prior art keywords
piston
chamber
grease
roller
sleeve
Prior art date
Application number
PCT/CN2007/000329
Other languages
English (en)
French (fr)
Inventor
Rulong Tang
Guocheng Peng
Original Assignee
Sany Heavy Industry Co., Ltd.
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 Sany Heavy Industry Co., Ltd. filed Critical Sany Heavy Industry Co., Ltd.
Priority to EP07702224A priority Critical patent/EP1950418A1/en
Publication of WO2008037147A1 publication Critical patent/WO2008037147A1/zh

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/18Lubricating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous

Definitions

  • the invention relates to a concrete pump and a pump truck, in particular to a lubricating device for a helium piston.
  • the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a helium piston lubricating device which has a long service life, saves the amount of lubricating grease, and reduces the waste of lubricating grease.
  • the sputum piston lubricating device of the invention comprises a connecting rod, a grease injection piston and a fatliquoring valve, wherein the connecting rod is provided with a cavity inside, and the grease injection piston is installed in the cavity body, and the cavity is divided into a fat storage cavity and a pressurized body
  • the chamber is connected to the grease storage chamber, and the grease chamber is provided with a grease outlet, wherein the pressure chamber is connected to the pressure increasing mechanism through the first one-way valve.
  • the grease injection piston is provided with a second one-way valve, and the pressure-increasing chamber is provided with a stop rod matched with the second one-way valve, and the grease storage chamber is provided with a cover plate matched with the second one-way valve.
  • the pressurization mechanism comprises a piston rod, a pressure water chamber, a roller and a returning device.
  • the pressure water chamber communicates with the pressure chamber through the first one-way valve, and the water inlet chamber is provided with a water inlet, and one end of the piston rod is installed at the pressure. In the water chamber, the other end is connected to the roller, and the returning device is sleeved on the piston rod.
  • the pressurization mechanism comprises a piston rod, a pressurized water chamber, a roller, a roller arm and a returning device.
  • the pressurized water chamber communicates with the pressurized chamber through the first one-way wide, and the water inlet is provided with a water inlet, and the piston rod is installed at one end. It is arranged in the water pressure chamber, and the other end is slidably disposed in the waist hole provided by the roller arm. One end of the roller arm is connected with the connecting rod, and the other end is connected with the roller, and the returning device is sleeved on the piston rod.
  • a beveled or reversely inclined positioning ring that cooperates with the roller is disposed under the roller.
  • the returning device comprises a sleeve, a return spring and a limiting pin arranged on the piston rod, wherein the sleeve is provided with a guiding groove matched with the limiting pin, the sleeve is sleeved on the piston rod, and the return spring sleeve It is placed on the sleeve and is limited by the limit pin.
  • the advantages of the invention are as follows: 1. Adding a supercharging mechanism to the helium piston, and using the increasing mechanism to reciprocate with the helium piston The characteristics of periodic supercharging during exercise realize the fixed point lubrication of the ⁇ piston, ensure the lubrication effect of the ⁇ piston, and improve the service life of the ⁇ piston. 2.
  • the regenerative mechanism is provided with a returning device to ensure that the boosting amount of the supercharging mechanism is equal each time, and the amount of lubricating grease discharged each time is equal. 3.
  • the fixed-point lubrication of the piston is used to improve the efficiency of lubricating grease, save the amount of lubricating grease, and reduce the waste of lubricating grease.
  • Figure 1 is a schematic view of the working principle of the present invention
  • Figure 2 is a schematic view showing the structure of the water absorption state of the embodiment 1 of the present invention.
  • Figure 3 is a schematic view showing the structure of a water-pressing state according to Embodiment 1 of the present invention.
  • Figure 4 is a schematic view showing the structure of the water absorption state of the embodiment 2 of the present invention.
  • Figure 5 is a schematic view showing the structure of a pressurized water state in the second embodiment of the present invention.
  • Figure 6 is a schematic view showing the structure of the water pressure state of the embodiment 3 of the present invention.
  • Figure 7 is a schematic view showing the structure of the water absorbing state of the embodiment 3 of the present invention.
  • Figure 8 is a partial enlarged view of the portion I in Figure 2.
  • Embodiment 1 As shown in FIG. 2 and FIG. 3, the helium piston lubricating device of the present invention is disposed in a water tank 1 of a helium transfer pump, and is packaged.
  • the connecting rod 4, the grease injection piston 6 and the fatliquoring valve 15 are connected, one end of the connecting rod 4 is connected to the helium piston 3 provided in the crucible conveying cylinder 2, and the other end is connected to the main cylinder 5 provided in the water tank 1, the main cylinder 5
  • the reciprocating motion is carried out by the connecting rod 4 and the crucible piston 3 in the crucible conveying cylinder 2.
  • the connecting rod 4 is internally provided with a cavity; the grease injection piston 6 is installed in the cavity, and the cavity is divided into a grease storage chamber 8 and a pressurized chamber 9, and one end of the piston 3 is a grease storage chamber 8 near the main cylinder 5.
  • One end is the plenum chamber 9, in this embodiment, the plenum chamber 9 is pressurized water; the grease filling valve 15 is connected with the grease storage chamber 8; the grease outlet 10 is disposed on the cover plate 16 at the end of the grease storage chamber 8;
  • the chamber 9 is connected to the supercharging mechanism 7 via a first unidirectional width 14.
  • the pressurizing mechanism 7 includes a piston rod 71, a pressurized water chamber 13, and a returning device 75.
  • the pressurized water chamber 13 communicates with the pressurized chamber 9 through the first one-way valve 14.
  • the first A check valve 14 is opened, pressurized water enters the pressurizing chamber 9;
  • the pressurized water chamber 13 is provided with a water inlet 72 communicating with the water tank 1;
  • the piston rod 71 is disposed at the end of the pressurized water chamber 13 and the other end is provided with The roller 73 and the roller 73 cooperate with the inclined surface 74 provided in the water tank 1.
  • the returning device 75 is sleeved on the piston rod 71.
  • the returning device 75 includes a sleeve 78, a return spring 751 and a limiting pin 70 disposed on the piston rod 71.
  • the sleeve 78 is provided with the limiting pin 70.
  • the guiding groove 79, the sleeve 78 is sleeved on the piston rod 71, and the return spring 751 is sleeved on the sleeve 78 and located between the connecting rod 4 and the limiting pin 70.
  • the grease injection piston 6 is provided with a second one-way valve 11
  • the plenum chamber 9 is provided with a stop rod 12 that cooperates with the second one-way valve 11
  • the grease storage chamber 8 is provided with the second one-way valve 11 .
  • Cover plate 16 16.
  • the pressure in the plenum chamber 9 is increased, so that the grease piston 6 is pushed out of the grease chamber 8 to lubricate the ⁇ piston 3, and the ⁇ piston lubricating device performs a timing fixed point lubrication for the ⁇ piston 3.
  • the roller 73 is disengaged from the inclined surface 74.
  • the piston rod 71 drives the roller 73 back to the initial position, and the water in the water tank 1 is replenished into the pressurized water chamber through the water inlet 72.
  • the piston lubrication device re-aligns the piston 3 with time.
  • the grease injection piston 6 is also pushed by the pressure water in the pressure chamber 9 to the 10-port end of the grease outlet, at which time the second check valve 11 is opened, and the pressure chamber 9 is opened.
  • the pressure water releases pressure through the grease outlet 10, most of which returns to the water tank 1, and a small amount is mixed with the grease to participate in lubrication; the grease valve 15 is opened, the grease is added to the grease reservoir 8, and the grease pushes the grease piston 6 back.
  • the stopper 12 is tightened against the second check valve 11, the second check valve 11 is closed, and the fatliquoring is completed.
  • Embodiment 2 As shown in FIG. 4 and FIG. 5, the ⁇ piston lubricating device of the present invention is disposed in the water tank 1 of the ⁇ conveying pump, and includes a connecting rod 4, a grease injection piston 6 and a grease filling valve 15, and one end of the connecting rod 4
  • the crucible piston 3 disposed in the crucible conveying cylinder 2 is connected, and the other end is connected to the main cylinder 5 provided in the water tank 1, and the main cylinder 5 is driven by the connecting rod 4 and the crucible piston 3 is in the crucible conveying cylinder 2 Reciprocating inside.
  • the connecting rod 4 is internally provided with a cavity; the grease injection piston 6 is installed in the cavity, and the cavity is divided into a grease storage chamber 8 and a pressurized chamber 9, and one end of the piston 3 is a grease storage chamber 8 near the main cylinder 5
  • One end of the plenum chamber 9 is pressurized water in the plenum chamber 9 in the embodiment; the grease filling valve 15 is connected to the grease storage chamber 8; the grease outlet 10 is disposed on the cover plate 16 at the end of the grease storage chamber 8;
  • the chamber 9 is connected to the pressurizing mechanism 7 via a first check valve 14.
  • the pressurizing mechanism 7 includes a piston rod 71, a pressurized water chamber 13, a roller 73, a roller arm 76, and a returning device 75.
  • the pressurized water chamber 13 communicates with the pressurized chamber 9 through the first one-way valve 14, when in the pressurized water chamber 13
  • the pressurized water chamber 13 is provided with a water inlet 72 communicating with the water tank 1
  • the piston rod 71 is disposed at the pressurized water chamber 13
  • the other end is slidably disposed in the waist hole 77 provided in the roller arm 76; the roller arm 76 is hinged to the connecting rod 4, and the other end is connected to the roller 73; the roller 73 is engaged with the inclined surface 74 provided on the inner wall of the water tank 1.
  • the returning device 75 is sleeved on the piston rod 71.
  • the returning device 75 includes a sleeve 78, a return spring 751 and a limiting pin 70 disposed on the piston rod 71.
  • the sleeve 78 is provided with a limiting pin 70.
  • the sleeve 78 is sleeved on the piston rod 71, and the return spring 751 is sleeved on the sleeve 78 and located between the connecting rod 4 and the limiting pin 70.
  • the grease injection piston 6 is provided with a second one-way valve 11
  • the plenum chamber 9 is provided with a stop rod 12 that cooperates with the second one-way valve 11
  • the grease storage chamber 8 is provided with the second one-way valve 11 .
  • Cover plate 16 16.
  • the grease injection piston 6 When the grease in the grease storage chamber 8 is used up, the grease injection piston 6 is also pushed by the pressure water in the pressure chamber 9 to the 10-port end of the grease outlet, at which time the second check valve 11 is opened, and the pressure chamber 9 is opened.
  • the pressure water releases the pressure through the grease outlet 10, and most of the water returns to the water tank 1, and a small amount is mixed with the grease to participate in the lubrication; the grease valve 15 is opened, the grease is added to the grease storage chamber 8, and the grease pushes the grease injection piston 6 back.
  • the stopper 12 When the stopper 12 is tightened against the second one-way valve 11, the second one-way valve 11 is closed, and the fatliquoring is completed.
  • Embodiment 3 As shown in FIG. 6 and FIG. 7, the ⁇ piston lubricating device of the present invention is disposed in the water tank 1 of the ⁇ conveying pump, and includes a connecting stalk 4, a grease injection piston 6 and a grease filling valve 15, and one end of the connecting rod 4 is The crucible piston 3 disposed in the crucible conveying cylinder 2 is connected, and the other end is connected to the main cylinder 5 provided in the water tank 1, and the main cylinder 5 is driven by the connecting rod 4 and the crucible piston 3 is in the crucible conveying cylinder 2 Reciprocating inside.
  • the connecting rod 4 is internally provided with a cavity; the grease injection piston 6 is installed in the cavity, and the cavity is divided into a grease storage chamber 8 and a pressurized chamber 9, and one end of the piston 3 is a grease storage chamber 8 near the main cylinder 5
  • One end of the plenum chamber 9 is pressurized water in the plenum chamber 9 in the embodiment; the grease filling valve 15 is connected to the grease storage chamber 8; the grease outlet 10 is disposed on the cover plate 16 at the end of the grease storage chamber 8;
  • the chamber 9 is connected to the pressurizing mechanism 7 via a first check valve 14.
  • the pressurizing mechanism 7 includes a piston rod 71, a pressurized water chamber 13, and a returning device 75.
  • the pressurized water chamber 13 communicates with the pressurized chamber 9 through the first one-way valve 14.
  • the first A check valve 14 is opened, pressurized water enters the pressurizing chamber 9;
  • the pressurized water chamber 13 is provided with a water inlet 72 communicating with the water tank 1;
  • the piston rod 71 is disposed at the end of the pressurized water chamber 13 and the other end is provided with
  • the roller 73 and the roller 73 cooperate with the reverse bevel positioning ring 80 provided in the water tank 1.
  • the returning device 75 is sleeved on the piston rod 71.
  • the returning device 75 includes a sleeve 78, a return spring 751 and a limiting pin 70 disposed on the piston rod 71.
  • the sleeve 78 is provided with the limiting pin 70.
  • the guiding groove 79, the sleeve 78 is sleeved on the piston rod 71, and the return spring 751 is sleeved on the sleeve 78 and located between the connecting rod 4 and the limiting pin 70.
  • the second grease check valve 6 is provided with a second check valve 11
  • the pressurizing chamber 9 is provided with a stop rod 12 matched with the second check valve 11
  • the grease storage chamber 8 is provided with the second check valve 11 .
  • the pressure in the plenum chamber 9 is increased, so that the grease piston 6 is pushed out of the grease chamber 8 to lubricate the ⁇ piston 3, and the ⁇ piston lubricating device completes a timing fixed point lubrication for the ⁇ piston 3.
  • the piston rod 71 drives the roller 73 back to the initial position, and the water in the water tank 1 is replenished into the pressurized water chamber through the water inlet 72.
  • the piston lubrication device re-aligns the piston 3 with time.
  • the grease injection piston 6 When the grease in the grease storage chamber 8 is used up, the grease injection piston 6 is also pushed by the pressure water in the pressure chamber 9 to the 10-port end of the grease outlet, at which time the second check valve 11 is opened, and the pressure chamber 9 is opened.
  • the pressure water releases the pressure through the grease outlet 10, and most of the water returns to the water tank 1, and a small amount is mixed with the grease to participate in the lubrication; the grease valve 15 is opened, the grease is added to the grease storage chamber 8, and the grease pushes the grease injection piston 6 back.
  • the stopper 12 When the stopper 12 is tightened against the second check valve 11, the second check valve 11 is closed, and the fatliquoring is completed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Description

砼活塞润滑装置
技术领域
本发明涉及混凝土输送泵及泵车, 尤其涉及砼活塞的润滑装置。
背景技术
目前, 砼活塞的润滑方式有两种,一种是在砼输送缸上开设径向小孔, 引入液压系 统油或专用润滑油路直接润滑。其缺陷是,润滑油孔的孔口对砼活塞会产生一定的损伤, 导致 活塞局部磨损速度加快, 砼活塞出现早期报废。另一种是在砼活塞的连接杆上设 置贮脂腔, 在贮脂腔内设有弹簧和活塞, 利用弹簧的弹力推动活塞内的润滑脂进入 输 送缸进行润滑。其缺陷是, 润滑脂的排出量和排出时间得不到控制, 在弹簧弹力的作用 下润滑脂不断从贮脂腔排出,在不需要润滑的地方也有润滑脂排出,造成润滑脂的浪费。 发明内容
本发明要解决的技术问题是克服现有技术的不足, 提供使用寿命长, 节约润滑油脂 用量, 减少润滑油脂浪费的砼活塞润滑装置。
本发明的砼活塞润滑装置, 包括连接杆、 注脂活塞、 加脂阀, 所述连接杆内部设有 腔体, 注脂活塞装设于腔体内, 将腔体分隔为贮脂腔和增压腔, 加脂阀与贮脂腔连通, 贮脂腔设有出脂口, 其特征在于所述增压腔通过第一单向阀与增压机构相连。
所述注脂活塞上设有第二单向阀, 增压腔内设有与第二单向阀配合的止动杆, 贮脂 腔设有与第二单向阀相配合的盖板。
所述增压机构包括活塞杆、 压水腔、 滚轮、 回位装置, 压水腔通过第一单向阀与增 压腔连通, 压水腔上设有入水口, 活塞杆一端装设于压水腔内, 另一端与滚轮相连, 回 位装置套设于活塞杆上。
所述增压机构包括活塞杆、 压水腔、 滚轮、 滚轮臂、 回位装置, 压水腔通过第一单 向阔与增压腔连通, 压水腔上设有入水口, 活塞杆一端装设于压水腔内, 另一端滑设于 滚轮臂所设腰型孔内, 滚轮臂一端与连接杆相连, 另一端与滚轮相连, 回位装置套设于 活塞杆上。
所述滚轮下方设有与滚轮配合的斜面或反斜面定位环。
所述回位装置包括套筒、 回位弹簧和设于活塞杆上的限位销, 套筒上设有与限位销 配合的导向槽, 套筒套设于活塞杆上, 回位弹簧套设于套筒上并通过限位销限位。
本发明的优点在于: 1、 在砼活塞上增设增压机构, 并利用增机机构随砼活塞往复 运动时周期性增压的特性, 实现对砼活塞定时定点润滑, 保证砼活塞的润滑效果, 提高 砼活塞使用寿命。 2、 增压机构上设有回位装置, 保证增压机构每次的增压量相等, 控 制每次排出的润滑油脂量相等。 3、 通过设置滚轮臂, 可减小增压机构受到的冲击, 提 髙增压机构的安全性和使用寿命。 4、 砼活塞的定时定点润滑, 提高了润滑油脂的使用 效率, 节约润滑油脂用量, 减少润滑油脂的浪费。 . 附图说明
图 1是本发明的工作原理示意图;
图 2是本发明实施例 1吸水状态的结构示意图
图 3是本发明实施例 1压水状态的结构示意图
图 4是本发明实施例 2吸水状态的结构示意图
图 5是本发明实施例 2压水状态的结构示意图
图 6是本发明实施例 3压水状态的结构示意图
图 7是本发明实施例 3吸水状态的结构示意图
图 8是图 2中 I处的局部放大图。
图中各标号表示:
I、 水箱 2、 砼输送缸
3、 砼活塞 4、 连接杆
5、 主油缸 6、 注脂活塞
7、 增压机构 8、 贮脂腔
9、 增压腔 10、 出脂口
II、 第二单向阀 12、 止动杆
13、 压水腔 14、 第一单向阀
15、 加脂阀 16、 盖板
71、 活塞杆 72、 入水口
73、 滚轮 74、 斜面
75、 回位装置 751、 回位弹簧
76、 滚轮臂 77、 腰型孔
78、 套筒 79、 导向槽
70、 限位销 80、 反斜面定位环
具体实施方式
实施例 1 : 如图 2、 图 3所示, 本发明的砼活塞润滑装置设于砼输送泵的水箱 1内, 包 括连接杆 4、 注脂活塞 6和加脂阀 15, 连接杆 4一端与设于砼输送缸 2内的砼活塞 3相连, 另一端与设于水箱 1内的主油缸 5相连,主油缸 5通过连接杆 4带动和砼活塞 3在砼输送缸 2 内做往复运动。连接杆 4内部设有腔体; 注脂活塞 6装设于腔体内, 将腔体分隔为贮脂腔 8和增压腔 9, 靠近 活塞 3的一端为贮脂腔 8, 靠近主油缸 5的一端为增压腔 9, 本实施例 · 中增压腔 9内为压力水; 加脂阀 15与贮脂腔 8连通; 出脂口 10设于贮脂腔 8端的盖板 16上; 增压腔 9通过第一单向阔 14与增压机构 7相连。 增压机构 7包括活塞杆 71、 压水腔 13、 回 位装置 75, 压水腔 13通过第一单向阀 14与增压腔 9连通, 当压水腔 13中水压增大时, 第 一单向阀 14开启, 压力水进入增压腔 9; 压水腔 13上设有与水箱 1相通的入水口 72; 活塞 杆 71—端装设于压水腔 13内, 另一端装设有滚轮 73, 滚轮 73与水箱 1内所设的斜面 74配 合。 回位装置 75套设于活塞杆 71上, 回位装置 75包括套筒 78、 回位弹簧 751和设于活塞 杆 71上的限位销 70, 套筒 78上设有与限位销 70配合的导向槽 79, 套筒 78套设于活塞杆 71 上, 回位弹簧 751套设于套筒 78上, 并位于连接杆 4和限位销 70之间。 注脂活塞 6上设有 第二单向阀 11, 增压腔 9内设有与第二单向阀 11配合的止动杆 12, 贮脂腔 8设有与第二单 向阀 11相配合的盖板 16。
工作原理: 如图 1、 图 2、 图 3所示, 砼活塞 3、 连接杆 4在主油缸 5的作用下, 在砼输 送缸 2内做往复运动, 增压机构 7也随连接杆 4做同步运动。 当砼活塞 3前进时, 滚轮 73在 水箱 1上所设的斜面 74作用下推动活塞杆 71压缩压水腔 13内的水, 压力水打开第一单向 阀 14并进入增压腔 9。 此时, 增压腔 9内压力增大, 使油脂活塞 6推出贮脂腔 8中油脂对砼 活塞 3进行润滑, 砼活塞润滑装置对砼活塞 3完成一次定时定点的润滑。 当砼活塞 3后退 时,滚轮 73与斜面 74脱离,在回位装置 75的作用下,活塞杆 71带动滚轮 73回到初始位置, 水箱 1中的水通过进水口 72补充进压水腔。 当砼活塞 3再次前进时, 进入下一轮循环, 砼 活塞润滑装置对砼活塞 3再次定时定点润滑。 当贮脂腔 8内的油脂用完, 注脂活塞 6也被 增压腔 9内的压力水推至出脂口 10—端, 此时第二单向阀 11被打开, 增压腔 9内的压力水 通过出脂口 10释放压力, 其中大部分水回到水箱 1, 少量与油脂混合参与润滑; 再打开 加脂阀 15, 将油脂加入贮脂腔 8, 油脂推动注脂活塞 6退回, 当止动件 12顶紧第二单向阀 11时, 第二单向阀 11关闭, 加脂完成。
实施例 2: 如图 4、 图 5所示, 本发明的砼活塞润滑装置设于砼输送泵的水箱 1内, 包 括连接杆 4、 注脂活塞 6和加脂阀 15, 连接杆 4一端与设于砼输送缸 2内的砼活塞 3相连, 另一端与设于水箱 1内的主油缸 5相连,主油缸 5通过连接杆 4带动和砼活塞 3在砼输送缸 2 内做往复运动。连接杆 4内部设有腔体; 注脂活塞 6装设于腔体内, 将腔体分隔为贮脂腔 8和增压腔 9, 靠近砼活塞 3的一端为贮脂腔 8, 靠近主油缸 5的一端为增压腔 9, 本实施例 中增压腔 9内为压力水; 加脂阀 15与贮脂腔 8连通; 出脂口 10设于贮脂腔 8端的盖板 16上; 增压腔 9通过第一单向阀 14与增压机构 7相连。 增压机构 7包括活塞杆 71、 压水腔 13、 滚 轮 73、 滚轮臂 76、 回位装置 75, 压水腔 13通过第一单向阀 14与增压腔 9连通, 当压水腔 13中水压增大时, 第一单向阀 14开启, 压力水进入增压腔 9; 压水腔 13上设有与水箱 1相 通的入水口 72; 活塞杆 71—端装设于压水腔 13内, 另一端滑设于滚轮臂 76所设腰型孔 77 内; 滚轮臂 76—端铰接于连接杆 4上, 另一端与滚轮 73相连; 滚轮 73与水箱 1内壁所设的 斜面 74配合。 回位装置 75套设于活塞杆 71上, 回位装置 75包括套筒 78、 回位弹簧 751和 设于活塞杆 71上的限位销 70,' 套筒 78上设有与限位销 70配合的导向槽 79,套筒 78套设于 活塞杆 71上, 回位弹簧 751套设于套筒 78上, 并位于连接杆 4和限位销 70之间。注脂活塞 6上设有第二单向阀 11, 增压腔 9内设有与第二单向阀 11配合的止动杆 12, 贮脂腔 8设有 与第二单向阀 11相配合的盖板 16。
工作原理: 如图 1、 图 4、 图 5所示, 砼活塞 3、 连接杆 4在主油缸 5的作用下, 在砼输 送缸 2内做往复运动, 增压机构 7也随连接杆 4做同步运动。 当砼活塞 3前进时, 滚轮 73在 水箱 1上所设的斜面 74作用下带动滚轮臂 76转动, 并由滚轮臂 76推动活塞杆 71压縮压水 腔 13内的水, 压力水打开第一单向阀 14并进入增压腔 9。 此时, 增压腔 9内压力增大, 使 油脂活塞 6推出贮脂腔 8中油脂对 活塞 3进行润滑,砼活塞润滑装置对砼活塞 3完成一次 定时定点的润滑。 当砼活塞 3后退时, 滚轮 73与斜面 74脱离, 在回位装置 75的作用下, 活塞杆 71推动滚轮臂 76, 滚轮臂 76带动滚轮 73回到初始位置, 水箱 1中的水通过进水口 72补充进压水腔。 当砼活塞 3再次前进时, 进入下一轮循环, 砼活塞润滑装置对砼活塞 3 再次定时定点润滑。 当贮脂腔 8内的油脂用完, 注脂活塞 6也被增压腔 9内的压力水推至 出脂口 10—端, 此时第二单向阀 11被打开, 增压腔 9内的压力水通过出脂口 10释放压力, 其中大部分水回到水箱 1, 少量与油脂混合参与润滑; 再打开加脂阀 15, 将油脂加入贮 脂腔 8,油脂推动注脂活塞 6退回,当止动件 12顶紧第二单向阀 11时,第二单向阀 11关闭, 加脂完成。
实施例 3 : 如图 6、 图 7所示, 本发明的砼活塞润滑装置设于砼输送泵的水箱 1内, 包 括连接秆 4、 注脂活塞 6和加脂阀 15, 连接杆 4一端与设于砼输送缸 2内的砼活塞 3相连, 另一端与设于水箱 1内的主油缸 5相连,主油缸 5通过连接杆 4带动和砼活塞 3在砼输送缸 2 内做往复运动。连接杆 4内部设有腔体; 注脂活塞 6装设于腔体内, 将腔体分隔为贮脂腔 8和增压腔 9, 靠近砼活塞 3的一端为贮脂腔 8, 靠近主油缸 5的一端为增压腔 9, 本实施例 中增压腔 9内为压力水; 加脂阀 15与贮脂腔 8连通; 出脂口 10设于贮脂腔 8端的盖板 16上; 增压腔 9通过第一单向阀 14与增压机构 7相连。 增压机构 7包括活塞杆 71、 压水腔 13、 回 位装置 75, 压水腔 13通过第一单向阀 14与增压腔 9连通, 当压水腔 13中水压增大时, 第 一单向阀 14开启, 压力水进入增压腔 9; 压水腔 13上设有与水箱 1相通的入水口 72; 活塞 杆 71—端装设于压水腔 13内, 另一端装设有滚轮 73, 滚轮 73与水箱 1内所设反斜面定位 环 80配合。 回位装置 75套设于活塞杆 71上, 回位装置 75包括套筒 78、 回位弹簧 751和设 于活塞杆 71上的限位销 70, 套筒 78上设有与限位销 70配合的导向槽 79, 套筒 78套设于活 塞杆 71上, 回位弹簧 751套设于套筒 78上, 并位于连接杆 4和限位销 70之间。 注脂活塞 6 上设有第二单向阀 11, 增压腔 9内设有与第二单向阀 11配合的止动杆 12, 贮脂腔 8设有与 第二单向阀 11相配合的盖板 16。
工作原理: 如图 1、 图 6、 图 7所示, 砼活塞 3、连接杆 4在主油缸 5的作用下, 在 砼输送缸 2内做往复运动, 增压机构 7也随连接杆 4做同步运动。 当砼活塞 3后退时, 滚轮 73在水箱 1内所设的反斜面定位环 80作用下推动活塞杆 71压缩压水腔 13内的水, 压力水打开第一单向阀 14并进入增压腔 9。此时, 增压腔 9内压力增大, 使油脂活塞 6 推出贮脂腔 8中油脂对砼活塞 3进行润滑,砼活塞润滑装置对砼活塞 3完成一次定时定 点的润滑。 当砼活塞 3前进时, 在回位装置 75的作用下, 活塞杆 71带动滚轮 73回到 初始位置, 水箱 1中的水通过进水口 72补充进压水腔。 当砼活塞 3再次后退时, 进入 下一轮循环,砼活塞润滑装置对 活塞 3再次定时定点润滑。当贮脂腔 8内的油脂用完, 注脂活塞 6也被增压腔 9内的压力水推至出脂口 10—端, 此时第二单向阀 11被打开, 增压腔 9内的压力水通过出脂口 10释放压力,其中大部分水回到水箱 1,少量与油脂混 合参与润滑; 再打开加脂阀 15, 将油脂加入贮脂腔 8, 油脂推动注脂活塞 6退回, 当止 动件 12顶紧第二单向阀 11时, 第二单向阀 11关闭, 加脂完成。

Claims

权 利 要 求
1、 一种砼活塞润滑装置, 包括连接杆(4)、 注脂活塞 (6)和加脂阀 (15), 所述 连接杆(4) 内部设有腔体, 注脂活塞(6)装设于腔体内, 将腔体分隔为贮脂腔(8) 和增压腔(9), 加脂阀 (15)与贮脂腔(8)连通, 贮脂腔(8) 设有出脂口 (10), 其 特征在于所述增压腔(9)通过第一单向阀 (14) 与增压机构 (7)相连。
2、 根据权利要求 1所述 活塞润滑装置, 其特征在于所述注脂活塞 (6)上设有第 二单向阀 (11), 增压腔 (9) 内设有与第二单向阀 (11)配合的止动杆 (12), 贮脂腔
(8)设有与第二单向阀 (11)相配合的盖板 (16)。
3、根据权利要求 1或 2所述 活塞润滑装置, 其特征在于所述增压机构(7)包括活 塞秆(71)、 压水腔(13)、 滚轮(73)、 回位装置(75), 压水腔(13)通过第一单向阀
(14)与增压腔(9)连通, 压水腔(13)上设有入水口 (72), 活塞杆(71)—端装设 于压水腔(13) 内, 另一端与滚轮(73)相连, 回位装置(75)套设于活塞杆(71)上。
4、根据权利要求 3所述 活塞润滑装置, 其特征在于所述滚轮 (73)下方设有与滚 轮(73)配合的斜面 (74)或反斜面定位环(80)。
5、根据权利要求 4所述砼活塞润滑装置, 其特征在于所述回位装置(75)包括套筒
(78)、 回位弹簧(751)和设于活塞杆(71)上的限位销 (70), 套筒 (78)上设有与 限位销(70)配合的导向槽(79), 套筒(78)套设于活塞杆(71)上, 回位弹簧(751) 套设于套筒(78)上并通过限位销 (70) 限位。
6、 根据权利要求 1或 2所述砼活塞润滑装置, 其特征在于所述增压机构(7)包括活 塞杆 (71)、 压水腔(13)、 滚轮(73)、 滚轮臂 (76)、 回位装置 (75), 压水腔(13) 通过第一单向阀 (14)与增压腔(9)连通, 压水腔(13)上设有入水口 (72), 活塞杆 (71)一端装设于压水腔(13) 内, 另一端滑设于滚轮臂 (76) 所设腰型孔(77) 内, 滚轮臂 (76)—端与连接杆 (4)相连, 另一端与滚轮(73)相连, 回位装置 (75) 套 设于活塞杆 (71)上。
7、 根据权利要求 6所述 活塞润滑装置, 其特征在于所述滚轮(73)下方设有与滚 轮(73)配合的斜面 (74) 或反斜面定位环 (80)。
8、 根据权利要求 7所述 活塞润滑装置, 其特征在于所述回位装置(75)包括套 筒(78)、 回位弹簧(751)和设于活塞杆(71)上的限位销 (70), 套筒 (78)上设有 与限位销(70)配合的导向槽(79),套筒(78)套设于活塞杆(71)上,,回位弹簧(751) 套设于套筒 (78) 上并通过限位销 (70) 限位。
PCT/CN2007/000329 2006-09-25 2007-01-29 Système de lubrification pour piston de pompe à béton WO2008037147A1 (fr)

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CN103161710A (zh) * 2011-12-16 2013-06-19 北汽福田汽车股份有限公司 管道输送装置
CN104265622B (zh) * 2014-09-28 2016-08-17 山推楚天工程机械有限公司 一种用于混凝土泵电控式砼活塞内润滑系统

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