阅读说明：本技术 一种组合式自润滑泵 (Combined self-lubricating pump ) 是由 袁亚东 华长浩 梁吉玲 吴索团 于 2021-01-12 设计创作，主要内容包括：本发明涉及一种组合式自润滑泵,主要解决现有自润滑泵使用寿命短、齿轮更换后调整较为繁琐、修复成本较高等技术问题,本发明的技术方案为：一种组合式自润滑泵,包括外齿圈组件、外壳体组件和小齿轮组件,外齿圈组件可旋转地安装在外壳体组件内部；外壳体装有防转卡；小齿轮组件通过小齿轮压盖A和小齿轮压盖B固定在外齿圈上并与外齿圈相互啮合。本发明适用于传动系统自润滑泵油装置。(The invention relates to a combined self-lubricating pump, which mainly solves the technical problems of short service life, complex adjustment after gear replacement, high repair cost and the like of the conventional self-lubricating pump, and adopts the technical scheme that: a combined self-lubricating pump comprises an outer gear ring component, an outer shell component and a pinion component, wherein the outer gear ring component is rotatably arranged inside the outer shell component; the outer shell is provided with an anti-rotation clamp; the pinion assembly is fixed on the external gear ring through a pinion gland A and a pinion gland B and is meshed with the external gear ring. The invention is suitable for the self-lubricating oil pumping device of the transmission system.)

1. The utility model provides a modular self-lubricating pump, characterized by: the gear type gearbox comprises an outer gear ring component, an outer shell component and a pinion component, wherein the outer gear ring component is rotatably arranged inside the outer shell component; the outer shell is provided with an anti-rotation clamp; the pinion assembly is fixed on the external gear ring through a pinion gland A and a pinion gland B and is meshed with the external gear ring.

2. A modular self-lubricating pump according to claim 1, characterised in that: the outer gear ring component comprises a split outer gear ring A, an outer gear ring B, a split gear, a one-way valve, a plunger assembly, a spacer ring, a rectangular seal and a support ring; the outer gear ring A and the outer gear ring B are connected with the fastening block through bolts, the inner ring forms a shaft hole, a plurality of gears are uniformly distributed on the outer gear ring A and the outer gear ring B, and each 2 integral gears and 2 notch gears form a pump oil outlet; or every 2 integral gears and 2 notch gears and 2 integral gears form a pump oil outlet; each oil outlet of the outer gear ring A and each oil outlet of the outer gear ring B are provided with three horizontal oil ducts, inclined oil ducts and vertical oil ducts which are communicated with each other, each oil duct is provided with a thread, a one-way valve is installed in each inclined oil duct, a plunger assembly is installed in each vertical oil duct, and the split type gear is connected with the outer gear ring A through bolts.

3. A modular self-lubricating pump according to claim 1, characterised in that: the shell body subassembly is including shells A, shells B, pinion gland A, pinion gland B, prevent changeing card and wear-resisting welt, and pinion gland A, pinion gland B all are equipped with the oilhole, and shells A and shells B symmetry are installed 4 and are prevented changeing card and 4 leading wheels of group, and every leading wheel of group comprises a pivot and two bearings, and wear-resisting welt is installed in shells A and shells B's cavity both sides.

4. A modular self-lubricating pump according to claim 1, characterised in that: the pinion assembly comprises a pinion, a bearing, a rotating shaft, shaft sleeves, a transition sleeve and a pin shaft, the pinion is arranged on the rotating shaft through the bearing, each gear of the pinion is provided with two shaft sleeves, a transition sleeve and a pin shaft, and the shaft sleeves can freely rotate around the pin shafts; the transition sleeve is vertically fixed on the pinion through a pin shaft of the transition sleeve.

5. The modular self-lubricating pump of claim 4, wherein: the excircle of the shaft sleeve is axially inscribed with the addendum circle of the pinion and is radially smaller than the thickness of the tooth surface.

6. The modular self-lubricating pump of claim 4, wherein: the diameter of the central connecting line circle of all the pin shafts is more than or equal to the sum of the radius of the reference circle and the radius of the addendum circle.

7. The modular self-lubricating pump of claim 4, wherein: the central connecting line included angle of two adjacent teeth of the pinion is 360/15=24 degrees.

8. The modular self-lubricating pump of claim 4, wherein: the bearing is in rotational contact with the spacer ring.

Technical Field

The invention relates to a combined self-lubricating pump, belongs to the technical field of hot continuous rolling transmission lubrication, and is suitable for a self-lubricating oil pumping device of a transmission system.

Background

The slide block type universal drive shaft roller side slide block of the hot rolling roughing mill generally adopts a self-lubricating pump to deliver oil for lubrication, and the working principle is that the rotating force of a main drive shaft drives gear mechanisms inside the pump to be meshed with each other, so that lubricating oil is pressurized and pumped to a lubricating position corresponding to a bearing. The self-lubricating pump is characterized in that the inner ring rotates and the outer ring is fixed in a working state, the input oil port is connected to the outer ring which is fixed relatively, and the output oil pipe rotates at a high speed along with the inner ring.

Chinese patents CN201120518963.2 "grease lubrication device for slider type universal spindle", CN201110000161.7 "lubrication device for slider type universal spindle slider", etc. all have gear pumps as working principles, and mainly have the following disadvantages: 1. the service life is short, the phenomenon that the oil cannot be pumped due to the fact that gear meshing surfaces are abraded after the pump is used for a period of time can occur, and the average service life cannot be reached within one year. 2. The meshing precision of the pump is ensured by the position of the eccentric sleeve on the rotating shaft of the pinion, and the adjustment is complicated after the gear is replaced. 3. Once the tooth surface of the gear is worn and festered, the gear can only be off-line repaired, and the repairing cost is high. 4. Because the main shaft is mostly in an inclined state during working, the eccentric wear phenomenon is easily caused at the contact ring position of the inner ring and the outer ring, which is also the key reason for causing the short service life of the lubricating pump.

Disclosure of Invention

The invention aims at the problems in the prior art, and provides a combined self-lubricating pump which is optimized according to the working characteristics of the pump and the defects of the original gear pump, so that each technical performance of the pump meets the field operation requirement, the service life is greatly prolonged, and key oil pumping components are modularized, so that the pump can be quickly replaced even if various abnormal phenomena incapable of pumping oil occur.

In order to achieve the purpose, the technical scheme of the invention is that the combined self-lubricating pump comprises an outer gear ring component, an outer shell component and a pinion component, wherein the outer gear ring component is rotatably arranged in the outer shell component; the outer shell is provided with an anti-rotation clamp; the pinion assembly is fixed on the external gear ring through a pinion gland A and a pinion gland B and is meshed with the external gear ring.

The outer gear ring component comprises a split outer gear ring A, an outer gear ring B, a split gear, a one-way valve, a plunger assembly, a spacer ring, a rectangular seal and a support ring; the outer gear ring A and the outer gear ring B are connected with the fastening block through bolts, the inner ring forms a shaft hole, a plurality of gears are uniformly distributed on the outer gear ring A and the outer gear ring B, and each 2 integral gears and 2 notch gears form a pump oil outlet; or every 2 integral gears and 2 notch gears and 2 integral gears form a pump oil outlet. Each oil outlet of the outer gear ring A and each oil outlet of the outer gear ring B are provided with three horizontal oil ducts, inclined oil ducts and vertical oil ducts which are communicated with each other, each oil duct is provided with a thread, a one-way valve is installed in each inclined oil duct, a plunger assembly is installed in each vertical oil duct, and the split type gear is connected with the outer gear ring A through bolts.

The shell body assembly comprises a big shell A, a big shell B, a small gear gland A, a small gear gland B, an anti-rotation clamp and a wear-resistant lining plate, wherein oil holes are formed in the small gear gland A and the small gear gland B, 4 anti-rotation clamps and 4 groups of guide wheels are symmetrically arranged on the big shell A and the big shell B, each group of guide wheels consists of a rotating shaft and two bearings, and the wear-resistant lining plate is arranged on two sides in the cavity of the big shell A and the big shell B.

The pinion assembly comprises a pinion, a bearing, a rotating shaft, shaft sleeves, a transition sleeve and a pin shaft, the pinion is arranged on the rotating shaft through the bearing, each gear of the pinion is provided with two shaft sleeves, a transition sleeve and a pin shaft, the axial direction of the excircle of each shaft sleeve is internally tangent with the addendum circle of the pinion, the radial direction of the excircle of each shaft sleeve is smaller than the thickness of the tooth surface, and the shaft sleeves can freely rotate around the pin shafts; the diameter of the central connecting line circle of all the pin shafts is more than or equal to the sum of the radius of the reference circle and the radius of the addendum circle. The transition sleeve is vertically fixed on the pinion through a pin shaft of the transition sleeve. And the central connecting line included angle of 15 pinion teeth and two adjacent gear teeth is 360/15=24 degrees.

The invention has the beneficial effects that: 1. through the structural improvement of the gear, the gear pump and the plunger pump are ingeniously and organically combined, the service life is greatly prolonged, and even if the phenomenon that the gear meshing surface is abraded occurs, the plunger module can still pump oil. 2. The oil pumping assemblies are designed and installed in a modularized mode, any module can be quickly replaced when damaged, adjustment is not needed, and the repair cost is low. 3. The guide wheel bearing structure added between the inner ring and the outer ring solves the eccentric wear phenomenon at the contact ring of the inner ring and the outer ring caused by the inclined state of the main shaft.

Drawings

FIG. 1 is a front view of a schematic configuration of an external ring gear assembly of the present invention.

FIG. 2 is a left side view of a schematic of the outer ring gear assembly construction of the present invention.

Fig. 3 is an enlarged view of a portion I of fig. 1.

Fig. 4 is an enlarged view of a portion II of fig. 2.

Fig. 5 is a perspective view of the external gear ring assembly of the present invention.

FIG. 6 is a front view of the outer housing assembly of the present invention.

Fig. 7 is a cross-sectional view of fig. 6G-G.

Fig. 8 is an enlarged view of a portion II of fig. 7.

Fig. 9 is a perspective view of the outer housing assembly of the present invention.

FIG. 10 is a front elevational view of the pinion assembly of the present invention in schematic form.

Fig. 11 is a cross-sectional view of fig. 10B-B.

Fig. 12 is an enlarged view of a portion I of fig. 11.

FIG. 13 is a perspective view of the pinion assembly of the present invention.

Fig. 14 is an enlarged view of a portion II of fig. 13.

Fig. 15 is a schematic view of the plunger assembly of the present invention.

Fig. 16 is a cross-sectional view of fig. 15A-a.

FIG. 17 is a schematic front view of the assembly structure of the present invention.

Fig. 18 is an enlarged view of a portion I of fig. 17.

Fig. 19 is an enlarged view of a portion II of fig. 17.

Fig. 20 is a cross-sectional view of fig. 18B-B.

Fig. 21 is a cross-sectional view of fig. 19D-D.

In the figure: 101-outer gear ring A, 102-outer gear ring B, 103-split gear, 104-one-way valve, 105-plunger assembly, 106-space ring, 107-rectangular seal, 108-support ring, 201-pinion gland A, 202-big shell A, 203-big shell B, 204-pinion gland B, 205-anti-rotation clamp, 206-wear-resistant lining plate, 207-rotating shaft and 208-bearing. 301-pinion, 302-bearing, 303-rotating shaft, 304-shaft sleeve, 305-transition sleeve, 306-pin shaft, 401-ball, 402-spring, 403-guide sleeve, 404-seal and 405-column.

Detailed Description

For the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.

A combined self-lubricating pump mainly comprises an outer gear ring assembly, an outer shell assembly and a pinion assembly.

As shown in fig. 1-5, the outer gear ring assembly mainly comprises a split outer gear ring a101, an outer gear ring B102, a split gear 103, a one-way valve 104, a plunger assembly 105, a spacer 106, a rectangular seal 107, a support ring 108, and the like; the plunger assembly 105 is composed of a ball 401, a spring 402, a guide sleeve 403, a cylinder 404 and a seal 405, wherein the ball 401 is embedded in the center of the uppermost end of the cylinder 405 and can rotate at any angle without falling off, as shown in fig. 15 and 16.

The split type outer gear rings A and B are connected through bolts, an axle hole is formed in the inner ring, a plurality of gears are uniformly distributed on the outer ring, and a pump oil outlet can be formed by every 2 integral gears and 2 notch gears according to actual requirements, namely 4 continuous gears; or every 2 integral gears and 2 notch gears and 2 integral gears, namely 6 continuous gears can form a pump oil outlet.

The gear model is designed with a maximum of 19 oil outlet ports in the case of 76 gears, and a maximum of 12 oil outlet ports in the case of 6 gears. For convenience of explanation, 4 gear modes and 10 output points are selected in the scheme. Referring to the enlarged partial views of I and II in FIGS. 3 and 4, each oil outlet on the body of the outer gear ring A101 is provided with three horizontal oil passages, inclined oil passages and vertical oil passages which are communicated with each other, each oil passage is provided with a thread, the inclined oil passages are responsible for conveying oil to the vertical oil passages, and one-way valves 104 are arranged in the inclined oil passages to prevent the oil from reversely flowing back; the plunger assembly 105 is installed in the vertical oil duct, the horizontal oil duct is responsible for outputting oil, and the installed check valve also prevents the oil from reversely flowing back. The split gears 103 are integrated with the outer gear ring A101 through bolts, and a round hole is formed in the middle of the tooth root of each split gear and communicated with the inclined oil duct. 20 tooth surfaces on the 10 split gears 103 are integrated, and gaps are designed in the middles of the other 56 teeth; the highest position of the ball 401 on the plunger assembly 105 under the action of the spring 402 does not exceed the tooth top height of the gear on the external gear ring 101.

As shown in fig. 6-9, the outer shell assembly includes a large outer shell a202, a large outer shell B203, a pinion gland a201, a pinion gland B204, an anti-rotation clip 205 and a wear-resistant lining board 206, the pinion gland a201 and the pinion gland B204 are respectively provided with oil holes for inputting oil, 4 anti-rotation clips 205 and 4 sets of guide wheels are symmetrically installed on the large outer shell a202 and the large outer shell B203, each set of guide wheels is composed of a rotating shaft 207 and two bearings 208, and the wear-resistant lining board 206 is installed on two sides in the cavity of the large outer shell a202 and the large outer shell B203.

As shown in fig. 10 to 14, the pinion assembly comprises a pinion 301, a bearing 302, a rotating shaft 303, shaft sleeves 304, a transition sleeve 305 and a pin 306, the pinion is mounted on the rotating shaft 303 through the bearing 302, each gear of the gear 301 is provided with two shaft sleeves 304, the transition sleeve 305 and the pin 306, the outer circle of each shaft sleeve 304 is internally tangent to the addendum circle of the pinion in the axial direction and is smaller than the tooth surface thickness in the radial direction, and the shaft sleeves 304 can freely rotate around the pin 306; the diameter of the central connecting line circle of all the pin shafts 306 is more than or equal to the sum of the radius of the reference circle and the radius of the addendum circle. The transition sleeve 305 is vertically fixed to the pinion 301 by its own pin. And the central connecting line included angle of 15 pinion teeth and two adjacent gear teeth is 360/15=24 degrees.

As shown in fig. 17-21, in a combined self-lubricating pump, an outer gear ring component can be positively and negatively rotated and is arranged inside an outer shell component; the outer shell remains stationary under the action of the anti-rotation clips 205; the pinion assembly is fixed on the external gear ring through a pinion gland A201 and a pinion gland B204 and is in a mutually meshed and rotating state with the external gear ring.

A combined self-lubricating pump mainly comprises the following action steps (oil is filled in a pump cavity):

the plunger oil absorption process: assuming that the position is zero, the pin 306 of the pinion component vertical to the lowest gear is in contact with the ball 401 of the plunger assembly 105, the cylinder 404 is at the lowest position, the spring 402 is compressed, and the cavity Q formed by the cylinder 404 and the guide sleeve 403 is the smallest; the outer gear ring rotates clockwise, the pinion rotates anticlockwise, the pin shaft 306 is gradually separated from the ball 401, meanwhile, the ball 401 is contacted with the transition sleeve 305, and the large upper end surface of the cylinder 404 is contacted with the outer circular surfaces of the two shaft sleeves 304; the pinion rotates 24 degrees, the large upper end face of the cylinder 404 is in contact with the outer circular faces of the two shaft sleeves 304, meanwhile, the cylinder 404 is lifted up under the action of the spring 402 to form a cavity with the guide sleeve 403 to be gradually enlarged to form back pressure, the one-way valve 104 is opened, and grease between the outer gear ring and the shell is sucked into the cavity Q. The plunger assembly 105 rotates continuously for 12 degrees, the large upper end surface of the cylinder 404 is separated from the outer circular surfaces of the two shaft sleeves 304, meanwhile, the highest position of the ball 401 on the plunger assembly 105 does not exceed the tooth top height of the gear on the outer gear ring 101 under the action of the spring 402, the plunger assembly 105 stably enters the shell after the plunger assembly 105 rotates continuously for 12 degrees, and the volume of the cavity Q is maximum at the moment.

The gear oil pumping process: after the oil suction process in the step 1 rotates for 36 degrees, the pinion rotates for 60 degrees in the anticlockwise direction (namely, the pinion rotates for 4 teeth in the position shown in fig. 18), and in the process, because the tooth surface of the outer gear ring has gaps, the gear meshing only plays a role in transmitting torque. And the rotation is continued for 24 degrees, the pinion and the split type gear 103 are meshed with each other, the process of primary gear oil pumping is completed, the pumped oil jacks the one-way valve 104, enters the lower part of the plunger assembly 105 and is output from the oil outlet.

Plunger pump oil process: continuing to rotate for 24 degrees, and separating the pinion from the split type gear 103 (the cavity of the gear pump is enlarged and starts to absorb oil); continuing to rotate 24 degrees (i.e. 7 teeth in the position of fig. 18), the pin 306 contacts the ball 401, the cylinder 404 is compressed from the highest position to the lowest position at the lowest position, the volume of the cavity Q changes from the maximum to the minimum, and the grease in the cavity is pumped out and discharged from the oil outlet.

According to the steps, in the embodiment 4, grease is output twice from each oil outlet when the outer gear ring rotates for a circle in the gear mode, and when the gear is worn, the oil pumping task is completed by the plunger pump; when the plunger is in a problem, the gear pump realizes the oil pumping function; when both have problems, the pinion gland a201 or the pinion gland B204 is removed, and the corresponding pinion assembly, the plunger assembly 105, the split gear 103, and the like are replaced.

Similarly, when the selected 6-gear mode outer gear ring rotates for a circle, each oil outlet can output grease for 3 times.

In the rotating process, the outer ring of the bearing 208 on the guide wheel is contacted with the spacer ring 106 and rotates, so that the eccentric wear phenomenon at the contact ring of the inner ring and the outer ring caused by the inclined state of the main shaft is avoided.

It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.