CN103291579B - A kind of driving mechanism of double pump - Google Patents
A kind of driving mechanism of double pump Download PDFInfo
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- CN103291579B CN103291579B CN201310234355.2A CN201310234355A CN103291579B CN 103291579 B CN103291579 B CN 103291579B CN 201310234355 A CN201310234355 A CN 201310234355A CN 103291579 B CN103291579 B CN 103291579B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000243 solution Substances 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
本发明公布了一种双泵的驱动机构，包括托架、电机、电机轴、驱动轴、偏心凸轮，其特征在于：所述电机安装在托架上，所述托架上还设置有两个泵；所述电机的电机轴上设置有两个对置的单向旋转装置，分别带动各自对应的驱动轴，并将动力分别传递给各自对应的偏心凸轮，所述偏心凸轮分别驱动各自对应的泵。本发明的有益效果是：本驱动机构结构紧凑、制造和装配方便、成本低，应用于驱动单独运行的双泵时，能够实现供给液体的流向切换功能。
The invention discloses a double-pump driving mechanism, which includes a bracket, a motor, a motor shaft, a drive shaft, and an eccentric cam, and is characterized in that: the motor is installed on the bracket, and two pump; the motor shaft of the motor is provided with two opposing one-way rotation devices, which respectively drive the corresponding drive shafts and transmit the power to the corresponding eccentric cams respectively, and the eccentric cams drive the corresponding eccentric cams respectively. Pump. The beneficial effect of the invention is that the driving mechanism has compact structure, convenient manufacture and assembly, and low cost, and can realize the flow direction switching function of the supply liquid when it is applied to drive double pumps operating independently.
Description
技术领域 technical field
本发明涉及一种驱动机构，适用于一种单独运行并且需要切换工作的双泵的驱动。 The invention relates to a driving mechanism, which is suitable for the driving of a double pump that operates independently and needs to be switched.
背景技术 Background technique
随着环境问题和能源危机的日益严峻，排放法规日益严格，越来越多的节能减排技术被应用于车辆中，其中SCR（选择性催化还原）技术是一种减少氮氧化合物排放的技术，SCR技术就是将尿素溶液，一种还原剂，喷入排气管内，释放出氨气，氨气在SCR催化转化器中与排气中的氮氧化合物反应生成氮气和水，从而净化掉排气中的氮氧化合物。由于尿素溶液这种还原剂冰点为-11℃，外界环境的温度低于此温度时，尿素溶液就会析出结晶，从而使尿素溶液体积膨胀而损坏喷射供应装置，因此车载喷射供应系统在使用结束后需要进行清空处理。 With the increasingly serious environmental problems and energy crisis, and stricter emission regulations, more and more energy-saving and emission-reduction technologies are applied to vehicles, among which SCR (Selective Catalytic Reduction) technology is a technology to reduce nitrogen oxide emissions , SCR technology is to spray urea solution, a reducing agent, into the exhaust pipe to release ammonia gas, which reacts with nitrogen oxides in the exhaust gas in the SCR catalytic converter to form nitrogen and water, thereby purifying the exhaust gas. nitrogen oxides in the air. Since the freezing point of urea solution, a reducing agent, is -11°C, when the temperature of the external environment is lower than this temperature, the urea solution will precipitate and crystallize, which will cause the volume of the urea solution to expand and damage the injection supply device. need to be cleared afterwards.
现有技术中有采用供给泵提供尿素溶液，在喷射结束后通过清空泵进行清空。而供给泵和清空泵的驱动大多采用一对一的驱动，对于单独运行的双泵系统，若采用两套相同或不同的驱动机构来运行，系统体积较大，结构冗余，成本较高。 In the prior art, a supply pump is used to provide urea solution, which is emptied by an emptying pump after the injection is completed. The drive of the supply pump and the emptying pump mostly adopts one-to-one drive. For a dual-pump system that operates independently, if two sets of the same or different drive mechanisms are used to operate, the system will be large in size, redundant in structure, and high in cost.
发明内容 Contents of the invention
本发明目的在于提供一种体积小、结构紧凑、成本低的双泵驱动机构。 The purpose of the present invention is to provide a double-pump driving mechanism with small volume, compact structure and low cost.
本发明为实现上述目的，采用如下技术方案： In order to achieve the above object, the present invention adopts the following technical solutions:
一种双泵的驱动机构，包括托架、电机、电机轴、驱动轴、偏心凸轮，其特征在于：所述电机安装在托架上，所述托架上还设置有两个泵；所述电机的电机轴上设置有两个对置的单向旋转装置，分别带动各自对应的驱动轴，并将动力传递给各自对应的偏心凸轮，所述偏心凸轮分别驱动各自对应的泵。 A double-pump driving mechanism, including a bracket, a motor, a motor shaft, a drive shaft, and an eccentric cam, is characterized in that: the motor is installed on the bracket, and two pumps are also arranged on the bracket; The motor shaft of the motor is provided with two opposing one-way rotating devices, which respectively drive their corresponding drive shafts and transmit power to their corresponding eccentric cams, and the eccentric cams respectively drive their corresponding pumps.
一种形式：所述电机轴单端输出动力；电机安装在两个泵的一侧。 One form: the motor shaft outputs power at one end; the motor is installed on one side of the two pumps.
所述托架上设置有支撑轴承，用于支撑驱动轴，电机近端驱动轴采用单端支撑，电机远端驱动轴采用双端支撑。 The bracket is provided with a supporting bearing for supporting the drive shaft. The drive shaft at the proximal end of the motor adopts single-end support, and the drive shaft at the far end of the motor adopts double-end support.
另一种形式：所述电机轴双端输出动力；电机安装在两泵之间。 Another form: the two ends of the motor shaft output power; the motor is installed between the two pumps.
所述托架上设置有支撑轴承，用于支撑驱动轴，电机两端驱动轴采用双端支撑。 The bracket is provided with support bearings for supporting the drive shaft, and the drive shafts at both ends of the motor are supported at both ends.
上述两种形式中，所述单向旋转装置的外圈分别与各自的驱动轴中心内孔同轴紧配安装。 In the above two forms, the outer rings of the one-way rotating device are tightly fitted coaxially with the central inner holes of the respective drive shafts.
所述偏心凸轮的外圆紧配安装在凸轮轴承的内圈，凸轮轴承的外圈与泵的连杆的内圈紧配连接，连杆的一侧外圆平面分别通过螺钉与所述泵连接。 The outer circle of the eccentric cam is tightly fitted on the inner ring of the cam bearing, and the outer ring of the cam bearing is tightly connected to the inner ring of the connecting rod of the pump, and the outer circle plane on one side of the connecting rod is respectively connected to the pump by screws. .
本发明的有益效果是：本驱动机构结构紧凑、制造和装配方便、成本低，应用于驱动单独运行的双泵时，能实现供给液体的流向切换功能。 The beneficial effect of the invention is that the driving mechanism has compact structure, convenient manufacture and assembly, and low cost, and can realize the flow direction switching function of the supply liquid when it is applied to drive double pumps operating independently.
附图说明 Description of drawings
图 1 为本发明双泵在电机一侧结构示意图。 Figure 1 is a schematic diagram of the structure of the dual pumps on the motor side of the present invention.
图 2 为图1中的托架结构示意图。 Figure 2 is a schematic diagram of the bracket structure in Figure 1.
图 3 为本发明双泵在电机两侧结构示意图。 Figure 3 is a schematic diagram of the structure of the dual pumps on both sides of the motor of the present invention.
图 4 为图3中的托架结构示意图。 Figure 4 is a schematic diagram of the bracket structure in Figure 3.
具体实施方式 Detailed ways
如图1所示，本发明主要由电机1、电机轴2、托架3、驱动轴Ⅰ4、驱动轴Ⅱ10、单向旋转装置Ⅰ5和单向旋转装置Ⅱ9、偏心凸轮Ⅰ6、偏心凸轮Ⅱ11、连杆7、凸轮轴承8、支撑轴承13组成一套双泵的驱动机构。 As shown in Fig. 1, the present invention mainly consists of motor 1, motor shaft 2, bracket 3, drive shaft I4, drive shaft II10, one-way rotation device I5 and one-way rotation device II9, eccentric cam I6, eccentric cam II11, connecting Rod 7, cam bearing 8, support bearing 13 form the drive mechanism of a set of double pumps.
电机1安装在托架3上，单向旋转装置Ⅰ5和单向旋转装置Ⅱ9，优选对应的单向轴承Ⅰ和单向轴承Ⅱ，以相对方向分别紧配安装在驱动轴Ⅰ4和驱动轴Ⅱ10一侧的中心孔内，电机轴2与单向轴承Ⅰ和单向轴承Ⅱ同轴连接。泵Ⅱ12为压力供给泵，泵Ⅰ14为非压力供给泵，视为清空泵，此种方式，可以通过分别装在托架3上的轴承座圈3a、3b、3c内的三个支撑轴承13实现供给泵和清空泵的支撑，如图2所示。驱动轴Ⅰ4和驱动轴Ⅱ10的外圆分别紧配安装在偏心凸轮Ⅰ6和偏心凸轮Ⅱ11的内圈，偏心凸轮Ⅰ6和偏心凸轮Ⅱ11的外圆紧配安装在凸轮轴承8的内圈，且至少有一侧与支撑轴承13的内圈端面接触，起定位作用。凸轮轴承8的外圈与连杆7的内圈紧配连接，连杆7的一侧外圆平面分别通过螺钉连接泵Ⅰ14和泵Ⅱ12。 The motor 1 is installed on the bracket 3, the one-way rotating device I5 and the one-way rotating device II9, preferably the corresponding one-way bearing I and the one-way bearing II, are mounted on the drive shaft I4 and the drive shaft II10 in opposite directions, respectively. In the central hole on the side, the motor shaft 2 is coaxially connected with the one-way bearing I and the one-way bearing II. Pump II12 is a pressure supply pump, and pump I14 is a non-pressure supply pump, which is regarded as an emptying pump. This method can be realized by three support bearings 13 respectively installed in the bearing races 3a, 3b, and 3c on the bracket 3. The support for the supply and emptying pumps is shown in Figure 2. The outer circles of the drive shaft I4 and the drive shaft II10 are tightly fitted on the inner rings of the eccentric cam I6 and the eccentric cam II11 respectively, and the outer circles of the eccentric cam I6 and the eccentric cam II11 are tightly fitted on the inner ring of the cam bearing 8, and at least one The side is in contact with the end face of the inner ring of the supporting bearing 13 to play a positioning role. The outer ring of the cam bearing 8 is tightly connected to the inner ring of the connecting rod 7, and the outer circular plane of one side of the connecting rod 7 is respectively connected to the pump I14 and the pump II12 by screws.
当电机1单方向旋转时，只带动驱动轴Ⅰ4和驱动轴Ⅱ10的其中之一运转。具体如下：当电机1正向旋转，驱动轴Ⅱ10内的单向轴承Ⅱ被带动，由此传递动力给驱动轴Ⅱ10上的偏心凸轮Ⅱ11，泵Ⅱ12工作，而驱动轴Ⅰ4内的单向轴承Ⅰ不动，泵Ⅰ14不工作，由此实现双泵的单独运行。反之，电机1反向旋转，驱动轴Ⅱ10内的单向轴承Ⅱ不动，不传递动力给驱动轴Ⅱ10上的偏心凸轮Ⅱ11，泵Ⅱ12不工作，而驱动轴Ⅰ4内的单向轴承Ⅰ被带动，输出动力给驱动轴Ⅰ4上的偏心凸轮Ⅰ6，泵Ⅰ14工作，由此实现双泵的工作状态切换。 When the motor 1 rotates in one direction, only one of the drive shaft I4 and the drive shaft II10 is driven to rotate. The details are as follows: When the motor 1 rotates in the forward direction, the one-way bearing II in the drive shaft II10 is driven, thereby transmitting power to the eccentric cam II11 on the drive shaft II10, the pump II12 works, and the one-way bearing I in the drive shaft I4 If it does not move, the pump I14 does not work, thereby realizing the independent operation of the double pumps. On the contrary, the motor 1 rotates in the opposite direction, the one-way bearing II in the drive shaft II10 does not move, does not transmit power to the eccentric cam II11 on the drive shaft II10, the pump II12 does not work, and the one-way bearing I in the drive shaft I4 is driven , the output power is given to the eccentric cam I6 on the drive shaft I4, and the pump I14 works, thereby realizing the switching of the working state of the two pumps.
作为本发明的驱动机构的另外一种形式，如图3所示。电机1安装在泵Ⅰ14和泵Ⅱ12之间，电机1两端分别伸出电机轴2a、2b，单向轴承Ⅰ和单向轴承Ⅱ分别以相对方向安装在两个相同的驱动轴Ⅲ15内。四个支撑轴承13安装在托架3上的轴承座圈16a、16b、16c和16d内，如图4所示。其工作原理与图1中的驱动描述类似。 Another form of the driving mechanism of the present invention is shown in FIG. 3 . The motor 1 is installed between the pump I14 and the pump II12, the two ends of the motor 1 protrude from the motor shafts 2a and 2b respectively, and the one-way bearing I and the one-way bearing II are respectively installed in two identical drive shafts III15 in opposite directions. Four support bearings 13 are mounted in bearing races 16a, 16b, 16c and 16d on the bracket 3, as shown in FIG. Its working principle is similar to the drive description in Figure 1.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310234355.2A CN103291579B (en) | 2013-06-13 | 2013-06-13 | A kind of driving mechanism of double pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310234355.2A CN103291579B (en) | 2013-06-13 | 2013-06-13 | A kind of driving mechanism of double pump |
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| CN103291579A CN103291579A (en) | 2013-09-11 |
| CN103291579B true CN103291579B (en) | 2015-09-16 |
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| CN118481943B (en) * | 2024-06-04 | 2024-10-01 | 北京锐滨健新材料科技有限公司 | Power driving device for high-pressure jet water pump |
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| CN201162640Y (en) * | 2008-03-05 | 2008-12-10 | 吴博 | Double-power apparatus of engineering machinery |
| DE102008000932A1 (en) * | 2008-04-02 | 2009-10-08 | Robert Bosch Gmbh | Device for dosing a liquid reducing agent |
| CN101737127A (en) * | 2008-11-25 | 2010-06-16 | 无锡油泵油嘴研究所 | SCP urea injection system for post treatment of diesel engine emissions |
| DE102011002425A1 (en) * | 2011-01-04 | 2012-07-05 | Robert Bosch Gmbh | Conveying device for supplying an exhaust aftertreatment system of an internal combustion engine with a reducing agent and method |
| CN102953787A (en) * | 2012-11-28 | 2013-03-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Dual-pump type reducer jetting and supplying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITCR20030008A1 (en) * | 2003-06-03 | 2004-12-04 | Bertolazzi Marino Pedrazzini | APPLIANCE INCLUDING TWO OPERATING DEVICES, OPERATED SELECTIVELY AND INDEPENDENTLY BY A SINGLE ELECTRIC MOTOR. |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201162640Y (en) * | 2008-03-05 | 2008-12-10 | 吴博 | Double-power apparatus of engineering machinery |
| DE102008000932A1 (en) * | 2008-04-02 | 2009-10-08 | Robert Bosch Gmbh | Device for dosing a liquid reducing agent |
| CN101737127A (en) * | 2008-11-25 | 2010-06-16 | 无锡油泵油嘴研究所 | SCP urea injection system for post treatment of diesel engine emissions |
| DE102011002425A1 (en) * | 2011-01-04 | 2012-07-05 | Robert Bosch Gmbh | Conveying device for supplying an exhaust aftertreatment system of an internal combustion engine with a reducing agent and method |
| CN102953787A (en) * | 2012-11-28 | 2013-03-06 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Dual-pump type reducer jetting and supplying device |
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Effective date of registration: 20170613 Address after: 214063 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee after: China FAW Group Corporation Address before: 214000 Jiangsu province Binhu District of Wuxi City Qian Rong Lu No. 15 Patentee before: Wuxi Oil Pump Nozzle Institute of First Automobile Works |