CN107448762B - Automatic lubrication pump for hydraulic equipment - Google Patents
Automatic lubrication pump for hydraulic equipment Download PDFInfo
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- CN107448762B CN107448762B CN201710906715.7A CN201710906715A CN107448762B CN 107448762 B CN107448762 B CN 107448762B CN 201710906715 A CN201710906715 A CN 201710906715A CN 107448762 B CN107448762 B CN 107448762B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
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Abstract
The invention discloses an automatic lubrication pump for hydraulic equipment; belongs to the technical field of lubricating pumps; the technical key point of the hydraulic pump comprises a pump body, wherein one end face of the pump body is provided with a first mounting groove, a working cavity is arranged at the inner bottom of the first mounting groove, and a cylinder body is arranged in the first mounting groove; a second mounting groove opposite to the first mounting groove is formed in the other end face of the pump body opposite to the first mounting groove, a pressure adjusting mechanism is arranged in the second mounting groove, a pressure transmission mechanism connected with the pressure adjusting mechanism is arranged in the cylinder body, and an external pressure oil inlet communicated with the pressure transmission mechanism is formed in the outer end face of the cylinder body; an oil inlet channel and an oil outlet channel are respectively arranged on the side wall of the working cavity, the oil inlet channel is connected with an automatic oil inlet valve, and the oil outlet channel is connected with an automatic oil outlet valve; the invention aims to provide the automatic lubrication pump for the hydraulic equipment, which has the advantages of compact structure, small volume, automatic adaptation to the load condition and good effect; the lubricating device is used for lubricating the moving parts of the hydraulic equipment.
Description
Technical Field
The present invention relates to hydraulic equipment accessories, and more particularly to an automatic lubrication pump for hydraulic equipment.
Background
The chain saw chain lubricating mechanism of the traditional large hydraulic or mechanical felling machine has the defects of large size, complex transmission mechanism, high manufacturing cost, difficult adjustment of lubricating oil quantity, incapability of adapting to automatic adaptive adjustment of working load and poor lubricating oil waste or lubricating effect. Or because of arranging difficulty, influence such as cost height does not set up saw chain lubricating arrangement, above-mentioned reason causes saw chain and baffle life to be short, and saw chain and baffle need frequent change, saw cutting resistance also can increase and influence work efficiency and increase the oil consumption owing to lubrication condition is poor simultaneously.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the automatic lubrication pump for the hydraulic equipment, which has the advantages of compact structure, small volume, automatic adaptation to the load condition, automatic real-time adjustment and good effect.
The technical scheme of the invention is realized as follows: an automatic lubrication pump for hydraulic equipment comprises a pump body, wherein one end surface of the pump body is provided with a first mounting groove, a working cavity is arranged at the bottom in the first mounting groove, and a cylinder body is arranged in the first mounting groove; a second mounting groove opposite to the first mounting groove is formed in the other end face of the pump body opposite to the first mounting groove, a pressure adjusting mechanism is arranged in the second mounting groove, a pressure transmission mechanism connected with the pressure adjusting mechanism is arranged in the cylinder body, and an external pressure oil inlet communicated with the pressure transmission mechanism is formed in the outer end face of the cylinder body; the side wall of the working cavity is respectively provided with an oil inlet channel connected with external lubricating oil and an oil outlet channel connected with an external part to be wetted, the oil inlet channel is connected with an automatic oil inlet valve, the oil outlet channel is connected with an automatic oil outlet valve, the external pressure oil drives the pressure transmission mechanism to reciprocate along the working cavity so as to control the opening and closing of the automatic oil inlet valve and the automatic oil outlet valve, when the automatic oil inlet valve is opened, the automatic oil outlet valve is closed, and when the automatic oil outlet valve is opened, the automatic oil inlet valve is closed.
In the automatic lubrication pump for hydraulic equipment, the cylinder body consists of the positioning part and the mounting part integrally formed in the middle of one side surface of the positioning part, a plurality of step holes are formed in the edge of the positioning part along the circumferential direction, the pump body corresponding to the step holes is provided with the internal thread holes, and the locking screw penetrates through the step holes to be in threaded connection with the corresponding internal thread holes; a first sealing ring is arranged between the outer wall of the contact part between the positioning part and the mounting part and the pump body; the pressure transmission mechanism is arranged in the mounting part.
In the automatic lubrication pump for the hydraulic equipment, the pressure adjusting mechanism is composed of an adjusting support arranged in the second mounting groove, a third mounting groove arranged on the end face opposite to the inner bottom of the second mounting groove, an adjusting screw connected to the adjusting support in the third mounting groove in a threaded mode, a locking nut connected to the adjusting screw located on the outer side of the adjusting support in a threaded mode, an adjusting support plate arranged at the end portion of the adjusting screw located in the third mounting groove, a second sealing ring arranged on the side wall of the adjusting support plate and matched with the third mounting groove, and a first spring arranged on the outer end face of the adjusting support plate, wherein the first spring is clamped between the adjusting support plate and the pressure conducting mechanism.
In the automatic lubrication pump for the hydraulic equipment, a third sealing ring is arranged between the adjusting support and the pump body.
In the automatic lubrication pump for hydraulic equipment, the pressure conduction mechanism comprises a guide cavity arranged on the end face of the cylinder body opposite to the working cavity, a plunger movably arranged in the guide cavity, a fourth sealing ring arranged between the outer wall of the plunger and the cylinder body, a push rod arranged on the end face of the plunger opposite to the working cavity and a force transmission plate arranged in the third mounting groove and fixedly connected with the push rod, and the first spring is clamped between the adjusting support plate and the force transmission plate.
In the automatic lubrication pump for hydraulic equipment, the pump body is provided with the fourth mounting groove communicated with the oil inlet channel, the fourth mounting groove divides the oil inlet channel into the front oil inlet channel and the rear oil inlet channel, the automatic oil inlet valve is arranged in the fourth mounting groove, and the oil inlet and the oil outlet of the automatic oil inlet valve are respectively connected with the front oil inlet channel and the rear oil inlet channel; the automatic oil inlet valve comprises an oil inlet valve body arranged in a fourth mounting groove, an oil inlet counter bore is axially formed in the end face, opposite to the inner bottom of the fourth mounting groove, of the oil inlet valve body, a second spring is arranged in the oil inlet counter bore, an oil inlet limiting ring is arranged at the opening part of the oil inlet counter bore, an inner hole of the oil inlet limiting ring is communicated with a front oil inlet channel, a conical oil inlet sealing plug is clamped between the oil inlet limiting ring and the second spring, the outer diameter of the top end face of the oil inlet sealing plug is smaller than the inner diameter of the oil inlet limiting ring, the outer diameter of the bottom end face of the oil inlet sealing plug is larger than the inner diameter of the oil inlet limiting ring, and the top end face of the oil inlet sealing plug faces the front oil inlet channel; the side wall of the oil inlet counter bore is circumferentially provided with a plurality of oil inlet valve oil outlet holes for conducting the oil inlet counter bore and the rear oil inlet channel, and the inner wall of the fourth mounting groove is provided with a first annular oil guide groove for conducting the oil inlet valve oil outlet holes and the rear oil inlet channel.
In the automatic lubrication pump for hydraulic equipment, the oil inlet valve body is composed of a first cap body and a first column body integrally formed on one end face of the first cap body, and the shape of the fourth mounting groove is adapted to the shape of the oil inlet valve body; an external thread is axially arranged on the outer wall of one end of the first cylinder, which is close to the first cap body, an internal thread matched with the external thread is arranged in the fourth mounting groove, and an inner hexagonal first operation blind hole is arranged on the other end face of the first cap body; a mounting inclined plane is arranged in a fourth mounting groove corresponding to the contact part of the first cap body and the first cylinder, and a fifth sealing ring is arranged between the mounting inclined plane and the oil inlet valve body; an annular groove is arranged on the outer wall of the oil inlet valve body between the advance oil inlet channel and the first annular oil guide groove, and a sixth sealing ring is arranged in the annular groove.
In the automatic lubrication pump for hydraulic equipment, a fifth mounting groove communicated with the oil outlet channel is formed in the pump body, the fifth mounting groove divides the oil outlet channel into a front oil outlet channel and a rear oil outlet channel, the automatic oil outlet valve is arranged in the fifth mounting groove, and an oil inlet and an oil outlet of the automatic oil outlet valve are respectively connected with the front oil outlet channel and the rear oil outlet channel; the automatic oil outlet valve comprises an oil outlet valve body arranged in a fifth mounting groove, an oil outlet counter bore is axially formed in the end face, opposite to the inner bottom of the fifth mounting groove, of the oil outlet valve body, a second spring is arranged in the oil outlet counter bore, an oil outlet limiting ring is arranged at the opening part of the oil outlet counter bore, an inner hole of the oil outlet limiting ring is communicated with a front oil outlet channel, a conical oil outlet sealing plug is clamped between the oil outlet limiting ring and the second spring, the outer diameter of the top end face of the oil outlet sealing plug is smaller than the inner diameter of the oil outlet limiting ring, the outer diameter of the bottom end face of the oil outlet sealing plug is larger than the inner diameter of the oil outlet limiting ring, and the top end face of the oil outlet sealing plug faces the front oil outlet channel; the side wall of the oil outlet counter bore is circumferentially provided with a plurality of oil inlet valve oil outlet holes which are communicated with the oil outlet counter bore and the rear oil outlet channel, and the inner wall of the fifth mounting groove is provided with a second annular oil guide groove which is communicated with the oil inlet valve oil outlet holes and the rear oil outlet channel.
In the automatic lubrication pump for hydraulic equipment, the oil outlet valve body is composed of a second cap body and a second column body integrally formed on one end face of the second cap body, and the shape of the fifth mounting groove is adapted to the shape of the oil outlet valve body; an external thread is axially arranged on the outer wall of one end, close to the second cap body, of the second column body, an internal thread matched with the external thread is arranged in the fifth mounting groove, and an inner hexagonal second operation blind hole is arranged on the other end face of the second cap body; a mounting inclined plane is arranged in a fifth mounting groove corresponding to the contact part of the second cap body and the second column body, and a seventh sealing ring is arranged between the mounting inclined plane and the oil outlet valve body; an annular groove is arranged on the outer wall of the oil outlet valve body between the front oil outlet channel and the second annular oil guide groove, and an eighth sealing ring is arranged in the annular groove.
After the structure is adopted, the pressure of the pressure oil of the hydraulic system is detected in real time by matching the pressure transmission mechanism and the pressure adjusting mechanism, and the oil supply quantity is adjusted in real time according to the pressure. The pretightening force of the first spring can be conveniently and rapidly adjusted through the adjusting screw according to specific requirements of equipment, so that the stroke and the moving speed of the plunger when being pressed are adjusted, and the oil discharge pressure and the oil discharge quantity of the wetting pump are adjusted.
The automatic lubrication pump has the advantages of small volume, few parts and compact structure, can automatically adjust the displacement of the pump according to the load of equipment, namely the magnitude and the frequency of the pressure change of the pressure oil inlet, and can realize very little pumping due to the structural characteristics of the automatic lubrication pump, which is difficult to realize by other hydraulic pumps. Meanwhile, the design of the automatic lubrication pump is highly integrated, so that the volume of the pump can be very small and even can be integrated on a joint of a hydraulic pipeline, the installation is very convenient and simple, the automatic lubrication pump can be suitable for solving the intermittent lubrication problem of most hydraulic mechanical equipment, and the automatic lubrication pump is suitable for being widely popularized and used.
Drawings
The invention is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the invention in any way.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial schematic view at B in FIG. 1;
fig. 4 is an enlarged partial schematic view at C in fig. 1.
In the figure: the pump body 1, the first installation groove 1a, the working chamber 1b, the second installation groove 1c, the oil inlet channel 1d, the oil outlet channel 1e, the fourth installation groove 1f, the front oil inlet channel 1g, the rear oil inlet channel 1h, the first annular oil guide groove 1i, the fifth installation groove 1j, the front oil outlet channel 1k, the rear oil outlet channel 1l, the second annular oil guide groove 1m, the cylinder body 2, the external pressure oil inlet 2a, the positioning part 2b, the installation part 2c, the step hole 2d, the first sealing ring 2e, the pressure adjusting mechanism 3, the adjusting support 3a, the third installation groove 3b, the adjusting screw 3c, the locking nut 3d, the adjusting support plate 3e, the second sealing ring 3f, the first spring 3g, the third sealing ring 3h the pressure transmission mechanism 4, the plunger 4a, the fourth sealing ring 4b, the ejector rod 4c, the force transmission plate 4d, the automatic oil inlet valve 5, the oil inlet valve body 5a, the oil inlet counter bore 5b, the second spring 5c, the oil inlet limiting ring 5d, the oil inlet sealing plug 5e, the oil inlet valve oil outlet 5f, the first cap body 5g, the first cylinder 5h, the first operation blind hole 5i, the sixth sealing ring 5j, the automatic oil outlet valve 6, the oil outlet valve body 6a, the oil outlet counter bore 6b, the second spring 6c, the oil outlet limiting ring 6d, the oil outlet sealing plug 6e, the oil inlet valve oil outlet 6f, the second cap body 6g, the second cylinder 6h, the second operation blind hole 6i, the eighth sealing ring 6j, the fifth sealing ring 7 and the seventh sealing ring 8.
Detailed Description
Referring to fig. 1 to 4, an automatic lubrication pump for a hydraulic device according to the present invention includes a pump body 1, which is preferably cylindrical or square. A first mounting groove 1a is provided on one end surface of the pump body 1, a working chamber 1b is provided in the inner bottom of the first mounting groove 1a, and a cylinder 2 is provided in the first mounting groove 1 a.
A second mounting groove 1c opposite to the first mounting groove 1a is arranged on the other end surface of the pump body 1 opposite to the first mounting groove 1a, a pressure regulating mechanism 3 is arranged in the second mounting groove 1c, a pressure transmission mechanism 4 connected with the pressure regulating mechanism 3 is arranged in the cylinder body 2, and an external pressure oil inlet 2a communicated with the pressure transmission mechanism 4 is arranged on the outer end surface of the cylinder body 2;
the side wall of the working cavity 1b is respectively provided with an oil inlet channel 1d connected with external lubricating oil and an oil outlet channel 1e connected with an external part to be wetted, the oil inlet channel 1d is connected with an automatic oil inlet valve 5, the oil outlet channel 1e is connected with an automatic oil outlet valve 6, and external pressure oil drives a pressure transmission mechanism 4 to reciprocate along the working cavity 1b so as to control the opening and closing of the automatic oil inlet valve 5 and the automatic oil outlet valve 6, when the automatic oil inlet valve 5 is opened, the automatic oil outlet valve 6 is closed, and when the automatic oil outlet valve 6 is opened, the automatic oil inlet valve 5 is closed.
Specifically, the cylinder body 2 is composed of a positioning part 2b and a mounting part 2c integrally formed in the middle of one side surface of the positioning part 2b, a plurality of step holes 2d are formed in the edge of the positioning part 2b along the circumferential direction, an internal threaded hole is formed in the pump body 1 corresponding to the step holes 2d, and a locking screw penetrates through the step holes 2d to be in threaded connection with the corresponding internal threaded hole; a first sealing ring 2e is arranged between the outer wall of the contact part between the positioning part 2b and the mounting part 2c and the pump body 1; the pressure transmission mechanism 4 is provided in the mounting portion 2 c.
The pressure adjusting mechanism 3 is composed of an adjusting support 3a arranged in the second mounting groove 1c, a third mounting groove 3b arranged on the end surface of the adjusting support 3a opposite to the inner bottom of the second mounting groove 1c, an adjusting screw 3c in threaded connection on the adjusting support 3a corresponding to the inner bottom of the third mounting groove 3b, a locking nut 3d in threaded connection on the adjusting screw 3c positioned on the outer side of the adjusting support 3a, an adjusting support plate 3e arranged at the end part of the adjusting screw 3c positioned in the third mounting groove 3b, a second sealing ring 3f arranged on the side wall of the adjusting support plate 3e and matched with the third mounting groove 3b, and a first spring 3g arranged on the outer end surface of the adjusting support plate 3e, wherein the first spring 3g is clamped between the adjusting support plate 3e and the pressure conducting mechanism 4. Meanwhile, a third sealing ring 3h is arranged between the adjusting support 3a and the pump body 1.
Correspondingly, the pressure conduction mechanism 4 comprises a guide cavity arranged on the end surface of the cylinder body 2 opposite to the working cavity 1b, a plunger 4a movably arranged in the guide cavity, a fourth sealing ring 4b arranged between the outer wall of the plunger 4a and the cylinder body 2, a push rod 4c arranged on the end surface of the plunger 4a opposite to the working cavity 1b, and a force transmission plate 4d arranged in the third mounting groove 3b and fixedly connected with the push rod 4c, wherein the first spring 3g is clamped between the adjusting support plate 3e and the force transmission plate 4 d.
Preferably, a fourth mounting groove 1f communicated with the oil inlet channel 1d is arranged on the pump body 1, the fourth mounting groove 1f divides the oil inlet channel 1d into a front oil inlet channel 1g and a rear oil inlet channel 1h, the automatic oil inlet valve 5 is arranged in the fourth mounting groove 1f, and an oil inlet and an oil outlet of the automatic oil inlet valve 5 are respectively connected with the front oil inlet channel 1g and the rear oil inlet channel 1h; the automatic oil inlet valve 5 comprises an oil inlet valve body 5a arranged in a fourth mounting groove 1f, an oil inlet counter bore 5b is axially arranged on the end surface of the oil inlet valve body 5a opposite to the inner bottom of the fourth mounting groove 1f, a second spring 5c is arranged in the oil inlet counter bore 5b, an oil inlet limiting ring 5d is arranged at the opening part of the oil inlet counter bore 5b, an inner hole of the oil inlet limiting ring 5d is communicated with the forward oil inlet channel 1g, a conical-frustum-shaped oil inlet sealing plug 5e is clamped between the oil inlet limiting ring 5d and the second spring 5c, the outer diameter of the top end surface of the oil inlet sealing plug 5e is smaller than the inner diameter of the oil inlet limiting ring 5d, the outer diameter of the bottom end surface of the oil inlet sealing plug 5e is larger than the inner diameter of the oil inlet limiting ring 5d, and the top end surface of the oil inlet sealing plug 5e faces the forward oil inlet channel 1g; the side wall of the oil inlet counter bore 5b is provided with a plurality of oil inlet valve oil outlet holes 5f which are communicated with the oil inlet counter bore 5b and the rear oil inlet channel 1h along the circumferential direction, and the inner wall of the fourth mounting groove 1f is provided with a first annular oil guide groove 1i which is communicated with the oil inlet valve oil outlet holes 5f and the rear oil inlet channel 1 h.
Further preferably, the oil inlet valve body 5a is composed of a first cap body 5g and a first column body 5h integrally formed on one end surface of the first cap body 5g, and the shape of the fourth mounting groove 1f is adapted to the shape of the oil inlet valve body 5 a; an external thread is axially arranged on the outer wall of one end, close to the first cap body 5g, of the first column body 5h, an internal thread matched with the external thread is arranged in the fourth mounting groove 1f, and an inner hexagonal first operation blind hole 5i is arranged on the other end face of the first cap body 5 g; a mounting inclined plane is arranged in a fourth mounting groove 1f corresponding to the contact part of the first cap body 5g and the first cylinder 5h, and a fifth sealing ring 7 is arranged between the mounting inclined plane and the oil inlet valve body 5 a; an annular groove is arranged on the outer wall of the oil inlet valve body 5a between the advance oil inlet channel 1g and the first annular oil guide groove 1i, and a sixth sealing ring 5j is arranged in the annular groove.
Meanwhile, a fifth mounting groove 1j communicated with the oil outlet channel 1e is formed in the pump body 1, the oil outlet channel 1e is divided into a front oil outlet channel 1k and a rear oil outlet channel 1l by the fifth mounting groove 1j, the automatic oil outlet valve 6 is arranged in the fifth mounting groove 1j, and an oil inlet and an oil outlet of the automatic oil outlet valve 6 are respectively connected with the front oil outlet channel 1k and the rear oil outlet channel 1l; the automatic oil outlet valve 6 comprises an oil outlet valve body 6a arranged in a fifth mounting groove 1j, an oil outlet counter bore 6b is axially arranged on the end surface of the oil outlet valve body 6a opposite to the inner bottom of the fifth mounting groove 1j, a second spring 6c is arranged in the oil outlet counter bore 6b, an oil outlet limiting ring 6d is arranged at the opening part of the oil outlet counter bore 6b, an inner hole of the oil outlet limiting ring 6d is communicated with the front oil outlet channel 1k, a conical frustum-shaped oil outlet sealing plug 6e is clamped between the oil outlet limiting ring 6d and the second spring 6c, the outer diameter of the top end surface of the oil outlet sealing plug 6e is smaller than the inner diameter of the oil outlet limiting ring 6d, the outer diameter of the bottom end surface of the oil outlet sealing plug 6e is larger than the inner diameter of the oil outlet limiting ring 6d, and the top end surface of the oil outlet sealing plug 6e faces the front oil outlet channel 1k; the side wall of the oil outlet counter bore 6b is provided with a plurality of oil inlet valve oil outlet holes 6f which are communicated with the oil outlet counter bore 6b and the rear oil outlet channel 1l along the circumferential direction, and the inner wall of the fifth mounting groove 1j is provided with a second annular oil guide groove 1m which is communicated with the oil inlet valve oil outlet holes 6f and the rear oil outlet channel 1 l.
Preferably, the oil outlet valve body 6a is composed of a second cap body 6g and a second column body 6h integrally formed on one end surface of the second cap body 6g, and the shape of the fifth mounting groove 1j is adapted to the shape of the oil outlet valve body 6 a; an external thread is axially arranged on the outer wall of one end, close to the second cap body 6g, of the second column 6h, an internal thread matched with the external thread is arranged in the fifth mounting groove 1j, and an inner hexagonal second operation blind hole 6i is arranged on the other end face of the second cap body 6 g; an installation inclined plane is arranged in a fifth installation groove 1j corresponding to the contact part of the second cap body 6g and the second cylinder body 6h, and a seventh sealing ring 8 is arranged between the installation inclined plane and the oil outlet valve body 6 a; an annular groove is arranged on the outer wall of the oil outlet valve body 6a between the front oil outlet channel 1k and the second annular oil guide groove 1m, and an eighth sealing ring 6j is arranged in the annular groove.
When the hydraulic system is used, the pressure oil of the hydraulic system is connected to an external pressure oil inlet of the lubricating pump, when the connected pressure rises, the hydraulic acting force acting on the plunger is greater than the preset elastic force of the first spring, the plunger moves to the right to enter the working cavity, the volume of the working cavity is reduced, the pressure in the cavity rises, the oil inlet sealing plug on the automatic oil inlet valve is closed, the oil outlet sealing plug on the automatic oil outlet valve is opened, and the oil in the working cavity is extruded by the plunger and discharged from the oil outlet channel through the automatic oil outlet valve, so that the oil discharge of the pump is completed. When the pressure of the external pressure oil inlet is reduced, the hydraulic acting force acting on the plunger is reduced, the plunger is pushed to move leftwards by the first spring under the action of the elasticity of the compressed first spring through the cooperation of the ejector rod and the force transmission plate, the volume of the working cavity is increased, the pressure in the cavity is reduced, the automatic oil outlet valve is closed, the automatic oil inlet valve is opened, and oil outside the oil inlet channel is sucked into the working cavity through the automatic oil inlet valve, so that the oil suction process of the pump is completed.
The automatic lubrication pump adopts a single-acting oil way design, and is free from being connected with a hydraulic circuit, so that the connection is simple. The return stroke of the plunger is realized by the elastic force of the first spring through pushing the ejector rod. The faster the pressure of the external pressure oil inlet rises, the higher the rise the greater the rightward speed and stroke of the plunger, the higher the pressure of the oil outlet passage and the greater the oil amount. The travel and the movement speed of the plunger can be adjusted by adjusting the pretightening force of the first spring in the pressure adjusting mechanism through the adjusting screw, so that the adjustment of the oil discharging pressure and the oil discharging quantity of the pump is realized. The automatic lubrication pump has small volume, few parts and compact structure, can automatically adjust the displacement of the pump according to the load of equipment, namely the magnitude and the frequency of the pressure change of an external pressure oil inlet, and can realize very little pumping due to the original structural characteristics of the automatic lubrication pump, which is difficult to realize by other hydraulic pumps. The design of the automatic lubrication pump is highly integrated, so that the volume of the pump can be very small and even can be integrated on a joint of a hydraulic pipeline, the installation is very convenient and simple, the automatic lubrication pump can be suitable for solving the intermittent lubrication problem of most hydraulic mechanical equipment, is suitable for being widely popularized and used, and has very remarkable beneficial effects.
The above examples are provided for convenience of description of the present invention and are not to be construed as limiting the invention in any way, and any person skilled in the art will make partial changes or modifications to the invention by using the disclosed technical content without departing from the technical features of the invention.
Claims (6)
1. An automatic lubrication pump for hydraulic equipment comprises a pump body (1), and is characterized in that one end surface of the pump body (1) is provided with a first mounting groove (1 a), a working cavity (1 b) is arranged at the inner bottom of the first mounting groove (1 a), and a cylinder body (2) is arranged in the first mounting groove (1 a); a second mounting groove (1 c) opposite to the first mounting groove (1 a) is arranged on the other end face of the pump body (1) opposite to the first mounting groove (1 a), a pressure regulating mechanism (3) is arranged in the second mounting groove (1 c), a pressure conducting mechanism (4) connected with the pressure regulating mechanism (3) is arranged in the cylinder body (2), and an external pressure oil inlet (2 a) communicated with the pressure conducting mechanism (4) is arranged on the outer end face of the cylinder body (2);
an oil inlet channel (1 d) connected with external lubricating oil and an oil outlet channel (1 e) connected with an external part to be wetted are respectively arranged on the side wall of the working cavity (1 b), the oil inlet channel (1 d) is connected with an automatic oil inlet valve (5), the oil outlet channel (1 e) is connected with an automatic oil outlet valve (6), the external pressure oil drives the pressure transmission mechanism (4) to reciprocate along the working cavity (1 b) so as to control the opening and closing of the automatic oil inlet valve (5) and the automatic oil outlet valve (6), when the automatic oil inlet valve (5) is opened, the automatic oil outlet valve (6) is closed, and when the automatic oil outlet valve (6) is opened, the automatic oil inlet valve (5) is closed;
the pressure adjusting mechanism (3) is composed of an adjusting support (3 a) arranged in a second mounting groove (1 c), a third mounting groove (3 b) arranged on the end surface of the adjusting support (3 a) opposite to the inner bottom of the second mounting groove (1 c), an adjusting screw (3 c) connected with the adjusting support (3 a) corresponding to the inner bottom of the third mounting groove (3 b) in a threaded manner, a locking nut (3 d) connected with the adjusting screw (3 c) arranged on the outer side of the adjusting support (3 a), an adjusting support plate (3 e) arranged at the end part of the adjusting screw (3 c) in the third mounting groove (3 b), a second sealing ring (3 f) arranged on the side wall of the adjusting support plate (3 e) and matched with the third mounting groove (3 b) and a first spring (3 g) arranged on the outer end surface of the adjusting support plate (3 e), and the first spring (3 g) is clamped between the adjusting support plate (3 e) and the pressure conducting mechanism (4);
the pressure conduction mechanism (4) comprises a guide cavity, a plunger (4 a), a fourth sealing ring (4 b), a push rod (4 c) and a force transmission plate (4 d), wherein the guide cavity is arranged on the end surface of the cylinder body (2) opposite to the working cavity (1 b), the plunger (4 a) is movably arranged in the guide cavity, the fourth sealing ring (4 b) is arranged between the outer wall of the plunger (4 a) and the cylinder body (2), the push rod (4 c) is arranged on the end surface of the plunger (4 a) opposite to the working cavity (1 b), the force transmission plate (4 d) is arranged in the third mounting groove (3 b) and is fixedly connected with the push rod (4 c), and the first spring (3 g) is clamped between the adjusting support plate (3 e) and the force transmission plate (4 d);
a fourth mounting groove (1 f) communicated with the oil inlet channel (1 d) is formed in the pump body (1), the fourth mounting groove (1 f) divides the oil inlet channel (1 d) into a front oil inlet channel (1 g) and a rear oil inlet channel (1 h), the automatic oil inlet valve (5) is arranged in the fourth mounting groove (1 f), and an oil inlet and an oil outlet of the automatic oil inlet valve (5) are respectively connected with the front oil inlet channel and the rear oil inlet channel (1 g and 1 h); the automatic oil inlet valve (5) comprises an oil inlet valve body (5 a) arranged in a fourth mounting groove (1 f), an oil inlet counter bore (5 b) is axially formed in the end face, opposite to the inner bottom surface of the fourth mounting groove (1 f), of the oil inlet valve body (5 a), a second spring (5 c) is arranged in the oil inlet counter bore (5 b), an oil inlet limiting ring (5 d) is arranged at the opening part of the oil inlet counter bore (5 b), an inner hole of the oil inlet limiting ring (5 d) is communicated with a front oil inlet channel (1 g), a conical oil inlet sealing plug (5 e) is clamped between the oil inlet limiting ring (5 d) and the second spring (5 c), the outer diameter of the top end face of the oil inlet sealing plug (5 e) is smaller than the inner diameter of the oil inlet limiting ring (5 d) and the outer diameter of the bottom end face is larger than the inner diameter of the oil inlet limiting ring (5 d), and the top end face of the oil inlet sealing plug (5 e) faces the front oil inlet channel (1 g); the side wall of the oil inlet counter bore (5 b) is circumferentially provided with a plurality of oil inlet valve oil outlet holes (5 f) which are communicated with the oil inlet counter bore (5 b) and the rear oil inlet channel (1 h), and the inner wall of the fourth mounting groove (1 f) is provided with a first annular oil guide groove (1 i) which is communicated with the oil inlet valve oil outlet holes (5 f) and the rear oil inlet channel (1 h).
2. The automatic lubrication pump for the hydraulic equipment according to claim 1, wherein the cylinder body (2) is composed of a positioning part (2 b) and a mounting part (2 c) integrally formed in the middle of one side surface of the positioning part (2 b), a plurality of step holes (2 d) are formed in the edge of the positioning part (2 b) along the circumferential direction, an internal threaded hole is formed in the pump body (1) corresponding to the step holes (2 d), and a locking screw penetrates through the step holes (2 d) to be in threaded connection with the corresponding internal threaded hole; a first sealing ring (2 e) is arranged between the outer wall of the contact part between the positioning part (2 b) and the mounting part (2 c) and the pump body (1); the pressure conduction mechanism (4) is arranged in the mounting part (2 c).
3. An automatic lubrication pump for hydraulic equipment according to claim 1, characterized in that a third sealing ring (3 h) is arranged between the adjusting support (3 a) and the pump body (1).
4. An automatic lubrication pump for hydraulic equipment according to claim 1, wherein the oil inlet valve body (5 a) is composed of a first cap body (5 g) and a first column body (5 h) integrally formed at one end face of the first cap body (5 g), and the shape of the fourth mounting groove (1 f) is adapted to the shape of the oil inlet valve body (5 a); an external thread is axially arranged on the outer wall of one end, close to the first cap body (5 g), of the first column body (5 h), an internal thread matched with the external thread is arranged in the fourth mounting groove (1 f), and an internal hexagonal first operation blind hole (5 i) is arranged on the other end face of the first cap body (5 g); an installation inclined plane is arranged in a fourth installation groove (1 f) corresponding to the contact part of the first cap body (5 g) and the first cylinder (5 h), and a fifth sealing ring (7) is arranged between the installation inclined plane and the oil inlet valve body (5 a); an annular groove is arranged on the outer wall of the oil inlet valve body (5 a) between the advance oil inlet channel (1 g) and the first annular oil guide groove (1 i), and a sixth sealing ring (5 j) is arranged in the annular groove.
5. An automatic lubrication pump for hydraulic equipment according to claim 1, characterized in that a fifth installation groove (1 j) communicated with the oil outlet channel (1 e) is arranged on the pump body (1), the fifth installation groove (1 j) divides the oil outlet channel (1 e) into a front oil outlet channel (1 k) and a rear oil outlet channel (1 l), the automatic oil outlet valve (6) is arranged in the fifth installation groove (1 j), and an oil inlet and an oil outlet of the automatic oil outlet valve (6) are respectively connected with the front oil outlet channel (1 k) and the rear oil outlet channel (1 l); the automatic oil outlet valve (6) comprises an oil outlet valve body (6 a) arranged in a fifth mounting groove (1 j), an oil outlet counter bore (6 b) is axially formed in the end face, opposite to the inner bottom of the fifth mounting groove (1 j), of the oil outlet valve body (6 a), a second spring (6 c) is arranged in the oil outlet counter bore (6 b), an oil outlet limiting ring (6 d) is arranged at the opening part of the oil outlet counter bore (6 b), an inner hole of the oil outlet limiting ring (6 d) is communicated with a front oil outlet channel (1 k), a conical oil outlet sealing plug (6 e) is clamped between the oil outlet limiting ring (6 d) and the second spring (6 c), the outer diameter of the top end face of the oil outlet sealing plug (6 e) is smaller than the inner diameter of the oil outlet limiting ring (6 d) and the outer diameter of the bottom end face is larger than the inner diameter of the oil outlet limiting ring (6 d), and the top end face of the oil outlet sealing plug (6 e) faces the front oil outlet channel (1 k); the side wall of the oil outlet counter bore (6 b) is circumferentially provided with a plurality of oil inlet valve oil outlet holes (6 f) which are communicated with the oil outlet counter bore (6 b) and the rear oil outlet channel (1 l), and the inner wall of the fifth mounting groove (1 j) is provided with a second annular oil guide groove (1 m) which is communicated with the oil inlet valve oil outlet holes (6 f) and the rear oil outlet channel (1 l).
6. An automatic lubrication pump for hydraulic equipment according to claim 5, wherein the oil outlet valve body (6 a) is composed of a second cap body (6 g) and a second cylinder (6 h) integrally formed at one end face of the second cap body (6 g), and the shape of the fifth mounting groove (1 j) is adapted to the shape of the oil outlet valve body (6 a); an external thread is axially arranged on the outer wall of one end, close to the second cap body (6 g), of the second column (6 h), an internal thread matched with the external thread is arranged in the fifth mounting groove (1 j), and an internal hexagonal second operation blind hole (6 i) is arranged on the other end face of the second cap body (6 g); an installation inclined plane is arranged in a fifth installation groove (1 j) corresponding to the contact part of the second cap body (6 g) and the second cylinder body (6 h), and a seventh sealing ring (8) is arranged between the installation inclined plane and the oil outlet valve body (6 a); an annular groove is arranged on the outer wall of the oil outlet valve body (6 a) between the front oil outlet channel (1 k) and the second annular oil guide groove (1 m), and an eighth sealing ring (6 j) is arranged in the annular groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906715.7A CN107448762B (en) | 2017-09-29 | 2017-09-29 | Automatic lubrication pump for hydraulic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906715.7A CN107448762B (en) | 2017-09-29 | 2017-09-29 | Automatic lubrication pump for hydraulic equipment |
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| CN107448762A CN107448762A (en) | 2017-12-08 |
| CN107448762B true CN107448762B (en) | 2023-08-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268334A (en) * | 2018-11-20 | 2019-01-25 | 台州巨力工具有限公司 | A kind of check valve and hydraulic tool for hydraulic tool |
| CN112289599B (en) * | 2020-10-26 | 2023-11-10 | 国网上海市电力公司 | Control valve, hydraulic operating mechanism and circuit breaker |
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| CN107448762A (en) | 2017-12-08 |
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