CN206429359U - A kind of hydraulic pump - Google Patents
A kind of hydraulic pump Download PDFInfo
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- CN206429359U CN206429359U CN201720090881.XU CN201720090881U CN206429359U CN 206429359 U CN206429359 U CN 206429359U CN 201720090881 U CN201720090881 U CN 201720090881U CN 206429359 U CN206429359 U CN 206429359U
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- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
本实用新型公开了一种液压泵，包括直流电机，直流电机的电枢铁芯与电机转轴通过平键联接，在电枢铁芯上设有一个以上液压泵柱塞腔，各液压泵柱塞腔以电机转轴为中心环形排列，在液压泵柱塞腔前端设有与直流电机前端盖相固定的斜盘，与液压泵柱塞腔滑动连接的柱塞通过其前端部的滑靴与斜盘上的环形滑靴轨道滑动连接，在液压泵柱塞腔后端设有与直流电机后端盖相固定的配流盘，设有液压泵柱塞腔的电枢铁芯与配流盘之间设有压紧密封连接结构：在靠近电枢铁芯前端的电机转轴上设有弹簧止挡，在弹簧止挡与电枢铁芯之间设有弹性部件以使油压泵柱塞腔右端的通油口与配流盘的两个腰形配流窗紧密配合。它具有结构紧凑、体积小，零部件配置少特点。
The utility model discloses a hydraulic pump, which comprises a DC motor. The armature iron core of the DC motor is connected with the motor shaft through a flat key. More than one hydraulic pump plunger cavity is arranged on the armature iron core. Each hydraulic pump plunger The cavity is arranged circularly around the motor shaft. At the front end of the hydraulic pump plunger cavity, there is a swash plate fixed to the front end cover of the DC motor. The ring-shaped sliding shoe track on the hydraulic pump is slidingly connected. At the rear end of the hydraulic pump plunger chamber, a distribution plate fixed to the rear end cover of the DC motor is provided. Compression and sealing connection structure: a spring stopper is provided on the motor shaft near the front end of the armature core, and an elastic member is provided between the spring stopper and the armature core to allow oil to flow through the right end of the plunger chamber of the hydraulic pump. The port is closely matched with the two waist-shaped distribution windows of the distribution plate. It has the characteristics of compact structure, small volume and few parts configuration.
Description
技术领域technical field
本实用新型涉及液压技术领域。The utility model relates to the technical field of hydraulic pressure.
背景技术Background technique
目前所使用的液压泵都是由电动机驱动，由于泵和电动机是两个单独的元件，所以体积大，质量重。随着社会的发展，已不能满足智能机械、国防军工等一些特殊行业的需求，因此最大限度的减少质量和体积是一种趋势。Currently used hydraulic pumps are all driven by electric motors. Since the pump and the electric motor are two separate components, they are bulky and heavy. With the development of society, it can no longer meet the needs of some special industries such as intelligent machinery and national defense industry. Therefore, it is a trend to minimize the quality and volume.
发明内容Contents of the invention
本实用新型要解决的技术问题是提供一种液压泵，它具有结构紧凑、体积小、零部件配置少等特点。The technical problem to be solved by the utility model is to provide a hydraulic pump, which has the characteristics of compact structure, small volume, and few components.
为解决上述技术问题，本实用新型所采取的技术方案是：In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:
一种液压泵，包括直流电机，直流电机的电枢铁芯与电机转轴通过平键联接，在电枢铁芯上设有一个以上的液压泵柱塞腔，各液压泵柱塞腔与电机转轴的轴心平行，且以电机转轴为中心环形排列，在液压泵柱塞腔前端设有与直流电机前端盖相固定的斜盘，与液压泵柱塞腔滑动连接的柱塞通过其前端部的滑靴与斜盘上的环形滑靴轨道滑动连接，滑靴轨道位于与转轴的轴心为中心，以各液压泵柱塞腔的半径为半径的圆柱形曲面上，在液压泵柱塞腔后端设有与直流电机后端盖相固定的配流盘，设有液压泵柱塞腔的电枢铁芯与配流盘之间设有压紧密封连接结构：在靠近电枢铁芯前端的电机转轴上设有弹簧止挡，在弹簧止挡与电枢铁芯之间设有弹性部件以使油压泵柱塞腔右端的通油口与配流盘的两个腰形配流窗紧密配合。A hydraulic pump, comprising a DC motor, the armature iron core of the DC motor is connected with the motor shaft through a flat key, more than one hydraulic pump plunger chamber is arranged on the armature iron core, each hydraulic pump plunger chamber is connected to the motor shaft The shafts are parallel and arranged circularly around the motor shaft. A swash plate fixed to the front end cover of the DC motor is provided at the front end of the hydraulic pump plunger chamber. The plunger slidingly connected with the hydraulic pump plunger chamber passes through the front end The sliding shoe is slidingly connected with the annular sliding shoe track on the swash plate, and the sliding shoe track is located on the axis of the rotating shaft as the center, on a cylindrical surface with the radius of each hydraulic pump plunger chamber as the radius, behind the hydraulic pump plunger chamber There is a distribution plate fixed to the rear end cover of the DC motor at the end, and a compression sealing connection structure is provided between the armature core with the plunger chamber of the hydraulic pump and the distribution plate: the motor shaft near the front end of the armature core A spring stopper is arranged on the top, and an elastic member is arranged between the spring stopper and the armature iron core so that the oil port at the right end of the plunger cavity of the hydraulic pump is closely matched with the two waist-shaped flow distribution windows of the flow distribution plate.
本实用新型进一步改进在于：The utility model is further improved in that:
它还包括测速传感器，测速传感器为安装于直流电机后端盖内的测速发电机。It also includes a speed sensor, which is a speed generator installed in the rear end cover of the DC motor.
液压泵柱塞腔为镶嵌于电枢铁芯预留孔内的铜衬套的内腔。The plunger cavity of the hydraulic pump is the inner cavity of the copper bush embedded in the reserved hole of the armature iron core.
斜盘和配流盘均采用陶瓷材料制成。Both the swash plate and the valve plate are made of ceramic material.
直流电机前端盖与斜盘的固定连接结构为：斜盘及滑靴卡盘依次套接在固定套上，并通过螺纹锁紧环轴向固定在一起形成环形滑靴轨道，在螺纹锁紧环上设有锁紧螺母，在斜盘前端通过圆柱销与直流电机前端盖进行周向固定。The fixed connection structure between the front end cover of the DC motor and the swash plate is as follows: the swash plate and the shoe chuck are sequentially sleeved on the fixed sleeve, and are axially fixed together by a threaded locking ring to form a ring-shaped sliding shoe track. There is a lock nut on the top, and the front end of the swash plate is fixed circumferentially by a cylindrical pin and the front end cover of the DC motor.
配流盘通过圆柱销与直流电机后端盖进行周向固定。The distribution plate is circumferentially fixed with the rear end cover of the DC motor through cylindrical pins.
压紧密封连接结构中的弹簧止挡为第一环形挡片，第一环形挡片位于设置在电机转轴上的轴用钢丝挡圈的后端，所述弹性部件为限位在钢丝挡圈后端的碟簧，所述碟簧通过第二环形挡片紧压在电枢铁芯前端面。The spring stopper in the compression sealing connection structure is the first annular stopper, and the first annular stopper is located at the rear end of the shaft steel wire retaining ring arranged on the motor shaft, and the elastic part is limited behind the steel wire retaining ring The disc spring at the end is tightly pressed against the front end of the armature core through the second annular stopper.
采用上述技术方案所产生的有益效果在于：The beneficial effects produced by adopting the above-mentioned technical scheme are:
本实用新型根据直流电动机及液压泵的结构特点，巧妙地将二者融合为一体，结构紧凑，体积小，通过测速传感器的转速反馈信号直接调节直流电动机的转速，实现流量调节变化，可以减少液压系统中流量调节阀的设置。斜盘和配流盘均采用陶瓷材料制成，和现有液压泵斜盘采用GCr15材料比，具有隔磁性能，由于电动泵本身电磁驱动，内部有磁场，对其内部零部件具有磁屏蔽作用，而且陶瓷材料硬度高、耐磨性好；液压泵柱塞腔为镶嵌于电枢铁芯预留孔内的铜衬套的内腔，便于加工制作，且铜具有延展性和抗腐蚀性不易被磁化；配流盘通过圆柱销与直流电机后端盖进行周向固定，固定方式简单可靠；因此，它具有结构紧凑、体积小，零部件配置少等特点。According to the structural characteristics of the DC motor and the hydraulic pump, the utility model skillfully integrates the two into one, has a compact structure and a small volume, directly adjusts the speed of the DC motor through the speed feedback signal of the speed sensor, realizes flow adjustment and changes, and can reduce hydraulic pressure. The setting of the flow regulating valve in the system. Both the swash plate and the distribution plate are made of ceramic materials, compared with the GCr15 material used for the swash plate of the existing hydraulic pump, it has magnetic isolation performance. Since the electric pump itself is driven electromagnetically, there is a magnetic field inside, which has a magnetic shielding effect on its internal components. Moreover, the ceramic material has high hardness and good wear resistance; the hydraulic pump plunger cavity is the inner cavity of a copper bush embedded in the reserved hole of the armature core, which is convenient for processing and production, and copper has ductility and corrosion resistance and is not easy to be damaged. Magnetization; the distribution plate is fixed circumferentially with the rear end cover of the DC motor through cylindrical pins, and the fixing method is simple and reliable; therefore, it has the characteristics of compact structure, small volume, and few parts configuration.
附图说明Description of drawings
图1是本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.
在附图中：1、电枢铁芯；2、电机转轴；3、平键；4、液压泵柱塞腔；4-1、油压泵柱塞腔右端的通油口；5、直流电机前端盖；6、斜盘；7、柱塞；7-1、柱塞前端部的滑靴；8、直流电机后端盖；9、配流盘；9-1、配流盘腰形配流窗；9-2、液压泵排油口；9-3、液压泵吸油口；10、测速发电机；11、铜衬套；12、固定套；13、锁紧螺母；14、滑靴卡盘；15、锁紧螺母；16、圆柱销；17、轴用钢丝挡圈；18、第一环形挡片；19、碟簧；20、第二环形挡片。In the attached drawings: 1. Armature iron core; 2. Motor shaft; 3. Flat key; 4. Hydraulic pump plunger chamber; 4-1. Oil port at the right end of the hydraulic pump plunger chamber; 5. DC motor Front end cover; 6. Swash plate; 7. Plunger; 7-1. Sliding shoe at front end of plunger; 8. Back end cover of DC motor; 9. Distribution plate; 9-1. Waist-shaped distribution window of distribution plate; 9 -2, hydraulic pump oil discharge port; 9-3, hydraulic pump oil suction port; 10, tachometer generator; 11, copper bushing; 12, fixed sleeve; 13, lock nut; 14, slipper chuck; 15, Lock nut; 16. Cylindrical pin; 17. Steel wire retaining ring for shaft; 18. First annular retainer; 19. Disc spring; 20. Second annular retainer.
具体实施方式detailed description
下面将结合附图和具体实施例对本实用新型进行进一步详细说明。The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
由图1所示的实施例可知，本实施例包括直流电机（24V供电），直流电机的电枢铁芯1与电机转轴2通过平键3联接，在电枢铁芯1上设有一个以上的液压泵柱塞腔4，各液压泵柱塞腔4与电机转轴2的轴心平行，且以电机转轴2为中心环形排列，在液压泵柱塞腔4前端设有与直流电机前端盖5相固定的斜盘6，与液压泵柱塞腔4滑动连接的柱塞7通过其前端部的滑靴7-1与斜盘6上的环形滑靴轨道滑动连接，滑靴轨道位于与转轴2的轴心为中心，以各液压泵柱塞腔4的半径为半径的圆柱形曲面上，在液压泵柱塞腔4后端设有与直流电机后端盖8相固定的配流盘9，设有液压泵柱塞腔4的电枢铁芯1与配流盘9之间设有压紧密封连接结构：在靠近电枢铁芯1前端的电机转轴2上设有弹簧止挡，在弹簧止挡与电枢铁芯1之间设有弹性部件以使油压泵柱塞腔4右端的通油口4-1与配流盘9的两个腰形配流窗9-1紧密配合。It can be seen from the embodiment shown in Figure 1 that this embodiment includes a DC motor (24V power supply), the armature core 1 of the DC motor is connected with the motor shaft 2 through a flat key 3, and more than one The hydraulic pump plunger cavity 4, each hydraulic pump plunger cavity 4 is parallel to the axis of the motor shaft 2, and is arranged circularly around the motor shaft 2, and the front end of the hydraulic pump plunger cavity 4 is provided with a DC motor front end cover 5 The swash plate 6 is fixed, and the plunger 7 slidably connected with the hydraulic pump plunger cavity 4 is slidably connected with the annular sliding shoe track on the swash plate 6 through the sliding shoe 7-1 at the front end. The sliding shoe track is located on the shaft 2 Centered on the axis of each hydraulic pump plunger cavity 4, on a cylindrical curved surface with a radius of each hydraulic pump plunger cavity 4, a flow distribution plate 9 fixed to the rear end cover 8 of the DC motor is provided at the rear end of the hydraulic pump plunger cavity 4. There is a compression sealing connection structure between the armature core 1 with the hydraulic pump plunger chamber 4 and the distribution plate 9: a spring stopper is provided on the motor shaft 2 close to the front end of the armature core 1, and a spring stopper is provided on the spring stopper An elastic member is provided between the armature core 1 so that the oil port 4-1 at the right end of the plunger cavity 4 of the hydraulic pump is closely matched with the two waist-shaped flow distribution windows 9-1 of the flow distribution plate 9.
它还包括测速传感器，测速传感器为安装于直流电机后端盖8内的测速发电机10。It also includes a speed sensor, which is a speed generator 10 installed in the rear end cover 8 of the DC motor.
液压泵柱塞腔4为镶嵌于电枢铁芯1预留孔内的铜衬套11的内腔。The hydraulic pump plunger cavity 4 is the inner cavity of the copper bushing 11 embedded in the reserved hole of the armature core 1 .
斜盘6和配流盘9均采用陶瓷材料制成。Both the swash plate 6 and the distribution plate 9 are made of ceramic materials.
直流电机前端盖5与斜盘6的固定连接结构为：斜盘6及滑靴卡盘14依次套接在固定套12上，并通过螺纹锁紧环13轴向固定在一起形成环形滑靴轨道，在螺纹锁紧环13上设有锁紧螺母15，在斜盘6前端通过圆柱销16与直流电机前端盖5进行周向固定。The fixed connection structure between the front end cover 5 of the DC motor and the swash plate 6 is as follows: the swash plate 6 and the shoe chuck 14 are sequentially sleeved on the fixed sleeve 12, and are axially fixed together by a threaded locking ring 13 to form an annular shoe track A lock nut 15 is provided on the threaded locking ring 13, and the front end of the swash plate 6 is fixed circumferentially with the front end cover 5 of the DC motor through a cylindrical pin 16.
配流盘9通过圆柱销16与直流电机后端盖8进行周向固定。The distribution plate 9 is circumferentially fixed to the rear end cover 8 of the DC motor through a cylindrical pin 16 .
压紧密封连接结构中的弹簧止挡为第一环形挡片18，第一环形挡片18位于设置在电机转轴2上的轴用钢丝挡圈17的后端，所述弹性部件为限位在钢丝挡圈17后端的碟簧19，所述碟簧19通过第二环形挡片20紧压在电枢铁芯1前端面。The spring stopper in the compression sealing connection structure is the first annular blocking piece 18, and the first annular blocking piece 18 is located at the rear end of the shaft steel wire retaining ring 17 arranged on the motor shaft 2. The disc spring 19 at the rear end of the steel wire retaining ring 17 is tightly pressed against the front end of the armature core 1 through the second annular blocking piece 20 .
工作原理：working principle:
直流电动机通电时，转子的受磁场作用开始旋转，其内部的电枢铁芯1同时旋转，液压泵柱塞腔4一起旋转，与液压泵柱塞腔4滑动连接的柱塞7跟随液压泵柱塞腔4旋转，柱塞7前端部的滑靴7-1沿斜盘6上的环形滑靴轨道旋转，使柱塞7在跟随液压泵柱塞腔4旋转同时做轴向直线运动，在柱塞7由直流电机最后端移向最前端过程中，油压泵柱塞腔4右端的通油口4-1与配流盘9的与液压泵吸油口9-3连通的腰形配流窗9-1相连通，液压泵柱塞腔4进行吸油；在柱塞7由直流电机最前端移向最后端过程中，油压泵柱塞腔4右端的通油口4-1与配流盘9的与液压泵排油口9-2连通的腰形配流窗9-1相连通，液压泵柱塞腔4进行排油，从而完成液压泵的工作循环，通过测速传感器的转速反馈信号直接调节直流电动机的转速，从而实现对液压泵的排量控制，为液压系统提供具有压力和流量的流体。When the DC motor is energized, the rotor starts to rotate under the action of the magnetic field, the armature core 1 inside it rotates at the same time, the hydraulic pump plunger chamber 4 rotates together, and the plunger 7 that is slidingly connected with the hydraulic pump plunger chamber 4 follows the hydraulic pump column When the plug chamber 4 rotates, the sliding shoe 7-1 at the front end of the plunger 7 rotates along the annular sliding shoe track on the swash plate 6, so that the plunger 7 makes an axial linear motion while following the rotation of the hydraulic pump plunger chamber 4. During the process of the plug 7 moving from the rear end of the DC motor to the front end, the oil port 4-1 at the right end of the plunger cavity 4 of the hydraulic pump communicates with the waist-shaped flow distribution window 9-3 of the distribution plate 9 and the oil suction port 9-3 of the hydraulic pump. 1 is connected, the plunger chamber 4 of the hydraulic pump sucks oil; when the plunger 7 moves from the front end of the DC motor to the rear end, the oil port 4-1 at the right end of the plunger chamber 4 of the hydraulic pump and the valve plate 9 are in contact with each other. The waist-shaped flow distribution window 9-1 connected to the oil discharge port 9-2 of the hydraulic pump is connected to each other, and the plunger chamber 4 of the hydraulic pump discharges oil, thereby completing the working cycle of the hydraulic pump, and directly adjusting the speed of the DC motor through the speed feedback signal of the speed sensor. Speed, so as to realize the displacement control of the hydraulic pump, and provide fluid with pressure and flow for the hydraulic system.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090881.XU CN206429359U (en) | 2017-01-22 | 2017-01-22 | A kind of hydraulic pump |
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| CN201720090881.XU CN206429359U (en) | 2017-01-22 | 2017-01-22 | A kind of hydraulic pump |
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| CN206429359U true CN206429359U (en) | 2017-08-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678011A (en) * | 2017-01-22 | 2017-05-17 | 石家庄市液压有限责任公司 | Hydraulic pump |
| CN113417908A (en) * | 2021-06-08 | 2021-09-21 | 北京航空航天大学 | Permanent magnet servo axial plunger pump integrated electro-hydraulic energy system |
-
2017
- 2017-01-22 CN CN201720090881.XU patent/CN206429359U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678011A (en) * | 2017-01-22 | 2017-05-17 | 石家庄市液压有限责任公司 | Hydraulic pump |
| CN113417908A (en) * | 2021-06-08 | 2021-09-21 | 北京航空航天大学 | Permanent magnet servo axial plunger pump integrated electro-hydraulic energy system |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170822 |