CN110500179B

CN110500179B - Structure capable of improving gear pump installation accuracy

Info

Publication number: CN110500179B
Application number: CN201910869192.2A
Authority: CN
Inventors: 李文; 许仲秋; 刘光明; 佘笑梅
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2024-03-15
Anticipated expiration: 2039-09-16
Also published as: CN110500179A

Abstract

The utility model provides a structure that can improve gear pump installation accuracy, relate to gear pump assembly technical field, it is including fixed setting up the cylinder body in the pump body left side, first spacing hole and the spacing hole of second on the engine cylinder body, first through-hole has been seted up along the axial to the cylinder body, the cylinder body card is located between first spacing hole and the spacing hole of second, first spacing hole, first through-hole, a spring pin is worn to be equipped with in the spacing hole of second, the pump body can rotate with the axle center of spring pin as the center, the right side fixedly connected with installing support of the pump body, the second through-hole has been seted up on the installing support, the breach that makes its annular pore wall unclosed is seted up along the axial to the second through-hole, the guide pin bushing is worn to be equipped with in the second through-hole, after the fixed guide pin bushing, make the installing support slide along the guide pin bushing, but fine setting pump body's position, and then adjust driven gear and driving gear's meshing clearance. The invention can adjust the meshing clearance between the driving gear of the engine and the driven gear of the gear pump, thereby achieving the purpose of improving the installation precision of the gear pump.

Description

Structure capable of improving gear pump installation accuracy

Technical Field

The invention relates to the technical field of gear pump assembly, in particular to a structure capable of improving gear pump installation accuracy.

Background

The gear pump is one of the oil pumps, the power source of the gear pump is from the power output of the engine, and the gear pump can be powered by installing a driving gear on the output shaft of the engine and installing a driven gear on the input shaft of the gear pump, so that the two gears are meshed to form transmission during assembly.

When the existing gear pump is assembled on an engine cylinder body, the existing gear pump is usually fastened and connected with the engine cylinder body directly through bolts, because the positions of positioning holes for inserting the bolts are preset, the gear pump can only be installed at a fixed dead position and cannot be adjusted at any time, and further, the gear clearance between a driving gear of the engine and a driven gear of the gear pump cannot be adjusted, so that the installation precision of the gear pump is directly affected, and if the clearance precision of the two gears is poor, the following problems are easily caused: 1. inducing vibration to generate transmission noise; 2. increasing the transmission torque and additionally consuming the energy of the engine; 3. the abrasion of the gears is caused, and the service life of the gears is shortened.

Disclosure of Invention

The invention aims to solve the problem of providing a structure capable of improving the installation precision of a gear pump, and the position of the gear pump can be finely adjusted in the process of assembling the gear pump on an engine cylinder body, so that the meshing clearance between a driving gear of the engine and a driven gear of the gear pump can be adjusted, and the aim of improving the installation precision of the gear pump is fulfilled.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a can improve gear pump installation accuracy's structure, including fixed setting up the left cylinder body of gear pump, set up on the engine cylinder body and the first spacing hole and the second spacing hole of axle center alignment, be equipped with the length assorted interval with the cylinder body between first spacing hole and the second spacing hole, first through-hole has been seted up along the axial to the cylinder body, the cylinder body card is located between first spacing hole and the second spacing hole just first through-hole and first spacing hole, the equal alignment of second spacing hole, first through-hole, second spacing hole wear to be equipped with an elastic pin, the pump body can rotate with the axle center of elastic pin as the center, the right side fixedly connected with installing support of the pump body, set up the second through-hole on the installing support, the breach that makes its annular pore wall do not close is seted up along the axial to the second through-hole, the guide pin bushing wears to have a positioning bolt, set up on the engine cylinder body with positioning bolt matched with positioning hole just first through-hole and first spacing hole, the second through-hole all aligns, first spacing hole, second through-hole, the second through-hole can be equipped with the axial center pin is located the axial center of elastic pin on the pump body, can make the installing support and the second through-hole can be tightened, thereby the clearance can be tightened up with the positioning bolt, the clearance can be tightened up with the second through-hole, and the bolt, can make the clearance is tightened up.

Further, a first lug and a second lug which are respectively positioned at two sides of the notch are fixedly arranged on the mounting bracket, and the fastening bolt penetrates through the first lug and can be inserted into the second lug to be in threaded connection with the second lug.

Preferably, the middle part of the guide sleeve is provided with a groove in an annular mode, the width of the groove is larger than the diameter of the rod part of the fastening bolt, and the fastening bolt can pass through the groove when connected with the first lug and the second lug.

More preferably, the elastic pin is a hollow cylinder, and an elongated notch matched with the elastic pin in length is axially formed in the elastic pin.

More preferably, the fastening bolt is a hexagon socket head cap bolt.

The invention has the beneficial effects that: through set up cylindricality body and installing support respectively in the both sides of the pump body, when installing to the engine cylinder body, can make the pump body rotate with cylindricality body center, after the meshing clearance of the driving gear of adjusting the engine and the driven gear of gear pump like this, alright make the installing support lock on the guide pin bushing, and the guide pin bushing is through the locking of locating bolt on the engine cylinder body, consequently also just can make pump body fastening connection accomplish the assembly on the engine cylinder body, this structure makes the meshing clearance of driving gear of engine and driven gear of gear pump fine setting in order to reach ideal within range, thereby improve the installation accuracy of gear pump, and then vibration and the transmission noise that produces in the course of the work have been reduced to a great extent, and avoid the transmission moment of torsion too big, prevent that the engine energy from being consumed by the transition, simultaneously also reduced the wearing and tearing of gear, the life of gear has been improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 3 is a schematic top view of FIG. 1 (with the spring pin in an incompletely inserted state);

FIG. 4 is a schematic diagram of the results of the pump body rotation process in the embodiment;

FIG. 5 is a schematic view of the position structure of the guide sleeve and the fastening bolt in the embodiment;

fig. 6 is a schematic structural view of an elastic pin in the embodiment.

The reference numerals are:

1-pump body 2-cylindrical body 3-engine cylinder body

3 a-first limit hole 3 b-second limit hole 4-elastic pin

4 a-strip-shaped notch 5-mounting bracket 5 a-notch

5 b-first bump 5 c-second bump 6-guide sleeve

6 a-groove 7-positioning bolt 8-positioning hole

9-fastening bolt 10-driven gear 11-driving gear.

Detailed Description

The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention.

It should be noted in advance that, in the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

As shown in fig. 1-4, a structure capable of improving gear pump installation accuracy comprises a cylindrical body 2 fixedly arranged on the left side of a pump body 1 of a gear pump, a first limiting hole 3a and a second limiting hole 3b which are arranged on an engine cylinder body 3 and are axially aligned, a gap 5a which is matched with the length of the cylindrical body 2 is arranged between the first limiting hole 3a and the second limiting hole 3b and is not closed is formed in the cylindrical body 2 along the axial direction, a movable guide sleeve 6 is arranged between the first limiting hole 3a and the second limiting hole 3b in a clamped mode, the first limiting hole 3a and the second limiting hole 3b are aligned, an elastic pin 4 is arranged in the first limiting hole 3a, the first limiting hole and the second limiting hole 3b in a penetrating mode, the pump body 1 can rotate by taking the axis of the elastic pin 4 as the center, a mounting bracket 5 is fixedly connected on the right side of the pump body 1, a second through hole is formed in the mounting bracket 5, a notch 5a which enables the annular hole wall of the cylindrical body 2 to be not closed is formed along the axial direction, a movable guide sleeve 6 is arranged in a penetrating mode, a positioning bolt 7 is arranged in the guide sleeve 6 in a penetrating mode, the positioning bolt 7 is arranged in the first through hole 3a position 6 and can be vertically matched with the first through hole 7 a positioning bolt 8, and the second through hole 7 is formed in a position 5, and can be screwed in a position 9 can be meshed with the driving bolt 9, and can be screwed in the positioning bolt 5 through the positioning bolt 5, and the positioning bolt can be screwed in the positioning bolt 5 through the positioning hole is arranged 5a position 5, and the positioning bolt can be screwed 3a position can be screwed in the position 5a position has a position can and can be used as well.

According to the structure capable of improving the installation accuracy of the gear pump, the cylindrical body 2 and the installation support 5 are respectively arranged on the two sides of the pump body 1, when the structure is installed on the engine cylinder body 3, the pump body 1 can rotate around the center of the cylindrical body 2, so that after the meshing gap between the driving gear 11 of the engine and the driven gear 10 of the gear pump is adjusted, the installation support 5 can be locked on the guide sleeve 6, and the guide sleeve 6 is locked on the engine cylinder body 3 through the positioning bolt 7, therefore, the pump body 1 can be tightly connected on the engine cylinder body 3 to complete the assembly.

Further, as shown in fig. 2, a first bump 5b and a second bump 5c are fixedly disposed on the mounting bracket 5 and are respectively located at two sides of the notch 5a, and the fastening bolt 9 passes through the first bump 5b and can be inserted into the second bump 5c to be in threaded connection with the second bump 5 c.

On the basis of the above, as shown in fig. 5, a groove 6a may be formed in the middle of the guide sleeve 6 in an annular manner, and the width of the groove 6a is larger than the diameter of the rod portion of the fastening bolt 9, so that the fastening bolt 9 can pass through the groove 6a when connecting the first protrusion 5b with the second protrusion 5c, and the side end of the rod portion of the fastening bolt 9 can abut against the bottom of the groove 6a, so that when the gear pump is used for a long time or fails due to external factors, even if the fastening bolt 9 is loosened to a certain extent, when the locking effect of the second through hole on the guide sleeve 6 is reduced, the gear pump is prevented from slipping greatly due to the limiting effect of the groove 6a on the fastening bolt 9, thereby playing the role of anti-falling insurance.

Preferably, the elastic pin 4 is a hollow cylindrical body, and as shown in fig. 6, an elongated notch 4a matched with the length of the elastic pin 4 is axially formed on the elastic pin 4, when the elastic pin 4 is inserted into the first limiting hole 3a, the first through hole and the second limiting hole 3b, the elongated notch 4a can be tightened to a certain extent, so that the elastic pin 4 generates a certain tensioning force (but does not affect the rotation of the pump body 1) to prevent the situation of easy slipping, and of course, in this embodiment, an anti-disengaging cover (not shown in the drawing) can be further installed at one end of the first limiting hole 3a, and is tightly connected to the engine cylinder 3 by a screw so as to limit the elastic pin 4 to disengage, or can be directly screwed to one end of the first limiting hole 3a by a screw plug for limiting, wherein the first limiting hole 3a is in a through hole type structure, the second limiting hole 3b is in a blind hole type structure, and one end of the elastic pin 4 can firstly pass through the first limiting hole 3a, then pass through the second through hole of the cylindrical body 2, and finally be inserted into the bottom of the second limiting hole 3 b.

In addition, in this embodiment, as a preferable option, the fastening bolt 9 is an internal hexagonal countersunk head bolt, so that when the position of the pump body 1 is adjusted in place, the action of screwing the fastening bolt 9 in the process of holding and maintaining the pump body 1 does not need to be large, a spanner is not needed like an external hexagonal bolt, the purpose of locking can be quickly and accurately achieved only by using auxiliary tools such as a small screwdriver, and the condition that the position of the pump body 1 is easy to shake in the locking process is avoided.

The foregoing embodiments are preferred embodiments of the present invention, and in addition, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.

In order to facilitate understanding of the improvements of the present invention over the prior art, some of the figures and descriptions of the present invention have been simplified, and some other elements have been omitted from this document for clarity, as will be appreciated by those of ordinary skill in the art.

Claims

1. Can improve gear pump installation accuracy's structure, its characterized in that: including fixed setting up on the left cylindricality body (2) of the pump body (1) of gear pump, set up on engine cylinder (3) and the first spacing hole (3 a) and the second spacing hole (3 b) that the axle center is aligned, be equipped with between first spacing hole (3 a) and the second spacing hole (3 b) with the length assorted interval of cylindricality body (2), first through-hole has been seted up along the axial to cylindricality body (2), cylindricality body (2) card is located between first spacing hole (3 a) and second spacing hole (3 b) just first through-hole and first spacing hole (3 a), second spacing hole (3 b) all align, first spacing hole (3 a), first through-hole, second spacing hole (3 b) wear to be equipped with an elastic pin (4), pump body (1) can use the axle center of elastic pin (4) to rotate as the center, right side fixedly connected with installing support (5) of pump body (1), set up on installing support (5) second through-hole and first through-hole (3 a), second through-hole and first spacing hole (3 a), second through-hole (3 a) and first through-hole (6) are equipped with, one and the axial bolt (6) that can be equipped with on the cylinder body (6) is worn out, one and the locating bolt (6), can make positioning bolt (7) insert in locating hole (8) and form the cooperation, screw positioning bolt (7), can make guide pin bushing (6) are fixed on engine cylinder block (3), can make at this moment installing support (5) slide along guide pin bushing (6), thereby can fine setting the position of pump body (1), and then adjust driven gear (10) and driving gear (11) meshing clearance, be equipped with one on installing support (5) with second through-hole looks vertically fastening bolt (9), fastening bolt (9) are located on the outer wall of second through-hole and can pass breach (5 a), screw fastening bolt (9), can make breach (5 a) tighten up, thereby make second through-hole locking guide pin bushing (6).

2. The structure for improving the mounting precision of the gear pump according to claim 1, wherein: the mounting bracket (5) is fixedly provided with a first lug (5 b) and a second lug (5 c) which are respectively positioned at two sides of the notch (5 a), and the fastening bolt (9) passes through the first lug (5 b) and can be inserted into the second lug (5 c) to be in threaded connection with the second lug (5 c).

3. The structure for improving the mounting precision of the gear pump according to claim 2, wherein: the middle part annular of guide pin bushing (6) has seted up recess (6 a), the width of recess (6 a) is greater than the diameter of fastening bolt (9) shaft portion, can pass through in recess (6 a) when fastening bolt (9) connect first lug (5 b) and second lug (5 c).

4. The structure for improving the mounting precision of the gear pump according to claim 1, wherein: the elastic pin (4) is a hollow cylindrical body, and a strip-shaped notch (4 a) matched with the elastic pin in length is axially formed in the elastic pin (4).

5. The structure for improving the mounting precision of the gear pump according to claim 1, wherein: the fastening bolt (9) is an inner hexagonal countersunk head bolt.