Adjustable pneumatic lubricating pump of locomotive

Abstract

The utility model relates to an adjustable pneumatic lubrication pump of locomotive, including pump core subassembly, pump body support, piston and pump body rear cover, the pump core subassembly is provided in the body, its one end is installed in the pump body support through bolt, the pump core subassembly includes one-way plunger, plunger sleeve and limit seat, and the one-way plunger is installed in the pump body support through bolt. The plunger sleeve is locked in the limiting seat through a set screw, an adjusting threaded sleeve is arranged in the front end of the plunger sleeve, a plug is arranged at the end of the adjusting threaded sleeve, the one-way plunger is arranged in the plunger sleeve, one end of the one-way plunger is connected with a first spring, the two ends of the first spring abut against the one-way plunger and the plug respectively, and the other end of the one-way plunger is connected with a second spring. The other end of the one-way plunger is connected with a piston, the piston is installed in a piston cavity formed in the pump body support, one end of the piston is connected with the one-way plunger through a piston base, and the other end of the piston abuts against a pump body rear cover arranged on one side of the pump body support. The single discharge capacity of the pneumatic pump can be increased or reduced, and the whole module can be quickly replaced from the bottom when the plunger is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic lubrication pumps, in particular to an adjustable pneumatic lubrication pump for locomotives. Background Art

[0002] The existing locomotive adjustable displacement pneumatic lubrication pump has a displacement range of 0.1ml / cyc~0.25ml / cyc, which can mainly provide oil and gas lubrication for the locomotive wheel rim. The existing one has the disadvantages of complex system configuration and inconvenient flow regulation, and the plunger is damaged and it is troublesome to replace. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides an adjustable pneumatic lubrication pump for a locomotive.

[0004] The utility model solves the above technical problems with a technical solution that provides a locomotive adjustable pneumatic lubrication pump, including a pump core assembly, a pump body bracket, a piston and a pump body rear cover. The pump core assembly is arranged between the body, and one end of the pump core assembly is installed in the pump body bracket by bolts. The pump core assembly includes a one-way plunger, a plunger sleeve and a limit seat. The plunger sleeve is locked in the limit seat by a set screw. An adjusting threaded sleeve is arranged inside the front end of the plunger sleeve, and a plug is arranged at the rear end of the plunger sleeve. The one-way plunger is arranged in the plunger sleeve. One end of the one-way plunger is connected to a spring, and both ends of the spring are respectively abutted against the one-way plunger and the plug. The other end of the one-way plunger is connected to a piston, which is installed in a piston cavity arranged inside the pump body bracket. One end of the piston is connected to the one-way plunger through a piston base, and the other end is abutted against the pump body rear cover arranged on one side of the body bracket.

[0005] The technical solution further defined in the utility model is:

[0006] Preferably, the upper and lower ends of the pump body bracket are respectively provided with a compressed gas groove and an oil-gas mixing groove, the two are connected through a connecting cavity, and the compressed gas groove and the oil-gas mixing groove are both provided with plastic threaded plugs.

[0007] Preferably, one side of the compressed gas groove is connected to an air inlet cavity, and is communicated with a piston cavity arranged inside the pump body bracket through the air inlet cavity.

[0008] Preferably, the one-way plunger includes plunger one and plunger two, plunger one and plunger two are clearance-matched, a metering chamber is arranged at the tail of plunger one, and a grease suction port is arranged at the bottom of the piston sleeve in the gap between plunger one and plunger two.

[0009] Preferably, a grease outlet is provided at the upper end of the plunger sleeve, and the grease outlet is communicated with the connecting cavity.

[0010] Preferably, a second spring is sleeved on the outer side of the second plunger, one end of the second spring abuts against the piston base, and the other end abuts against a spring seat arranged on the outer side of the plunger sleeve.

[0011] Preferably, an annular limiting protrusion is provided on the tail of the plunger sleeve.

[0012] Preferably, an O-ring and an elastic gasket for a hole are provided between the connection between the pump body rear cover and the piston cavity inside the rear end of the pump body bracket.

[0013] The beneficial effects of the utility model are as follows: the utility model has a simple structure, and the single displacement of the pneumatic pump can be increased or decreased by rotating the adjusting screw sleeve to the left or right, and it can be adjusted on site without replacing parts. A one-way plunger is arranged inside the pump core assembly, and the seal is reliable to ensure that the gas will not return to the pump body and then to the inside of the oil tank. At the same time, if the plunger is damaged, the entire module can be quickly replaced from the bottom. The annular limiting protrusions left on the plunger sleeve ensure that the plunger sleeve will not fall off when the pump core assembly is replaced. The limiting seat and the plunger sleeve adopt a split structure, which is easy to assemble and improves the processing technology of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the pump core assembly of the utility model. DETAILED DESCRIPTION Example

[0016] This embodiment provides a locomotive adjustable pneumatic lubrication pump, such as Figure 1-2 , including a pump core assembly 1, a pump body bracket 2, a piston 3 and a pump body rear cover 4, the pump core assembly is arranged between the body, one end of which is installed in the pump body bracket by bolts, the pump core assembly includes a one-way plunger 5, a plunger sleeve 6 and a limit seat 7, the plunger sleeve 6 is locked in the limit seat 7 by a set screw 27, an adjusting threaded sleeve 8 is arranged inside the front end of the plunger sleeve, and a plug 9 is arranged at the rear end of the plunger sleeve, and the one-way plunger 5 is arranged in the plunger sleeve;

[0017] The one-way plunger includes a plunger 1 5-1 and a plunger 2 5-2, wherein the plunger 1 and the plunger 2 are fitted with a gap, a spring 10 is connected to the front end of the plunger 1, and the two ends of the spring are respectively against the plunger 1 5-1 and the plug 9, a metering chamber 11 is arranged at the tail end thereof, and a grease suction port 12 is arranged at the bottom of the piston sleeve in the gap between the plunger 1 and the plunger 2, a grease outlet 13 is arranged at the upper end of the plunger sleeve, the grease outlet is connected to the connecting chamber 14, and the grease can flow out from the grease outlet only when the plunger 1 reaches the leftmost side, a piston 15 is connected to the tail end of the plunger 2, and the piston is installed in a piston chamber 16 arranged inside the pump body bracket, one end of the piston is connected to the one-way plunger through a piston base 17, and the other end is against the pump body rear cover 4 arranged on one side of the main body bracket, and an O-ring 18 and a hole elastic gasket 19 are arranged between the connection between the pump body rear cover and the piston chamber inside the tail end of the pump body bracket;

[0018] A spring 20 is sleeved outside the plunger 5-2, one end of the spring 2 abuts against the piston base 17, and the other end abuts against a spring seat 26 arranged outside the plunger sleeve, and an annular limiting protrusion 21 is arranged on the tail of the plunger sleeve;

[0019] A compressed gas groove 22 and an oil-gas mixing groove 23 are respectively provided at the upper and lower ends of the pump body bracket, and the two are connected through a connecting cavity 14. At the same time, an air intake cavity 24 is connected to one side of the compressed gas groove, and is connected to a piston cavity 16 provided inside the pump body bracket through the air intake cavity, and both the compressed gas groove and the oil-gas mixing groove are provided with plastic threaded plugs 25.

[0020] In this embodiment, compressed gas is turned on to push the piston to move to the left. At the same time, the piston further pushes plunger 2 in the pump core assembly to move to the left. The grease in the metering chamber is compressed, pushing plunger 1 to move to the left. When the piston runs to a fixed stroke, the grease flows out through the grease outlet on the plunger sleeve and is mixed with another part of the gas to form a ready-made oil-gas mixture and output along the pipe wall.

[0021] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A locomotive adjustable pneumatic lubrication pump, comprising a pump core assembly, a pump body bracket, a piston and a pump body rear cover, characterized in that: The pump core assembly is arranged between the body, and one end of the pump core assembly is installed in the pump body bracket by bolts. The pump core assembly includes a one-way plunger, a plunger sleeve and a limit seat. The plunger sleeve is locked in the limit seat by a set screw. An adjusting threaded sleeve is arranged inside the front end of the plunger sleeve, and a plug is arranged at the rear end of the plunger sleeve. The one-way plunger is arranged in the plunger sleeve. One end of the one-way plunger is connected to a spring, and the two ends of the spring are respectively against the one-way plunger and the plug. The other end of the one-way plunger is connected to a piston, which is installed in a piston cavity arranged inside the pump body bracket. One end of the piston is connected to the one-way plunger through a piston base, and the other end is against the pump body back cover arranged on one side of the body bracket.

2. The adjustable pneumatic lubrication pump for locomotives according to claim 1, characterized in that: The upper and lower ends of the pump body bracket are respectively provided with a compressed gas groove and an oil-gas mixing groove, the two are connected through a connecting cavity, and the compressed gas groove and the oil-gas mixing groove are both provided with plastic thread plugs.

3. The adjustable pneumatic lubrication pump for locomotive according to claim 2, characterized in that: One side of the compressed gas groove is connected with an air inlet cavity, and is communicated with a piston cavity arranged inside the pump body bracket through the air inlet cavity.

4. The adjustable pneumatic lubrication pump for locomotives according to claim 2, characterized in that: The one-way plunger comprises plunger one and plunger two, plunger one and plunger two are clearance matched, a metering cavity is arranged at the tail of plunger one, and a grease suction port is arranged at the bottom of the piston sleeve in the clearance between plunger one and plunger two.

5. The adjustable pneumatic lubrication pump for locomotives according to claim 4, characterized in that: A grease outlet is arranged at the upper end of the plunger sleeve, and the grease outlet is communicated with the connecting cavity.

6. The adjustable pneumatic lubrication pump for locomotives according to claim 4, characterized in that: A spring 2 is sleeved on the outer side of the second plunger, one end of the spring 2 abuts against the piston base, and the other end abuts against a spring seat arranged on the outer side of the plunger sleeve.

7. The adjustable pneumatic lubrication pump for locomotives according to claim 1, characterized in that: An annular limiting protrusion is arranged on the tail of the plunger sleeve.

8. The adjustable pneumatic lubrication pump for locomotives according to claim 1, characterized in that: An O-ring and a hole elastic gasket are arranged between the connection between the pump body rear cover and the piston cavity inside the rear end of the pump body bracket.

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