Crankcase structure in piston air compressor

Abstract

The utility model discloses a crankcase structure in a piston air compressor, which relates to the technical field of crankcase, and comprises a box body and a limiting mechanism, one side of the box body is connected with an oil filling port, the other side of the box body is provided with a cover plate, one side of the cover plate is provided with an oil return device, one side of the oil return device is connected with a connecting pipe, and the connecting pipe is connected with the limiting mechanism. And one end of the connecting pipe is connected with the box body. According to the crankcase structure in the piston air compressor, a threaded rod and a rack rod are rotated for threaded transmission, the rack rod is driven to move, the rack rod is engaged with a gear ring on one side when moving, so that the gear ring and a connecting ring are driven to rotate, the connecting ring drives a convex block to break away from extrusion on an extrusion block, and at the moment, a tension spring is reset; and therefore, the extrusion block is pulled to be separated from extrusion on the outer side of the cover plate, the cover plate can be separated from the box body, and the interior of the box body can be maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crankcase, specifically piston air compressor in crankcase structure. BACKGROUND

[0002] The crankcase is an important component of the engine, located in the lower part of the cylinder block, for installing the crankshaft. The main function of the crankcase is to provide support and protection for the crankshaft, and also provide space for the storage and circulation of lubricating oil.

[0003] For example, the publication number CN208718880U piston air compressor in crankcase structure, the oil inlet pipe in the box is increased filter device, the impurity in lubricating oil is filtered, makes the service life of lubricating oil longer, the oil filler of box is installed through flange plate, and the replacement of internal filter screen is convenient.

[0004] When the inside of the crankcase is maintained, a plurality of bolts on the side cover plate of the crankcase need to be rotated by a wrench to make it separate from the connection with the crankcase, and then the cover plate is disassembled. This way of disassembling the crankcase is more cumbersome to operate and is not convenient for disassembling and maintaining the crankcase. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of piston air compressor in crankcase structure to solve the problem of inconvenient disassembly and maintenance of the existing crankcase proposed in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of piston air compressor in crankcase structure, comprising: box and limiting mechanism, the side of the box is connected with oil filler, the other side of the box is provided with cover plate, the side of the cover plate is installed with oil return device, the side of the oil return device is connected with connecting pipe, the one end of the connecting pipe is connected with the box,

[0007] The side of the cover plate is provided with limiting mechanism, the limiting mechanism includes the fixed block fixedly connected with the side of the box, the fixed block is slidably connected with connecting ring in the inside, the inner side of the connecting ring is fixedly connected with multiple protruding blocks, the outer side of the connecting ring is connected with extrusion block, the outer side of the extrusion block is slidably connected with connecting block, one end of the oil filler is provided with plugging mechanism.

[0008] Specifically, connecting ring can pass through the through slot in the inside of extrusion block through multiple protruding blocks in the inside, and extrusion block is extruded, so that it moves and pushes the side cover plate and the box tightly, to complete the closure of the box.

[0009] Preferably, one end of the extrusion block is fixedly connected with a tension spring, one end of the tension spring is fixedly connected with a connecting block, one side of the box body is fixedly provided with a plurality of positioning rods, and the outer side of the positioning rod penetrates the cover plate.

[0010] Specifically, the tension spring can pull the extrusion block to reset.

[0011] Preferably, the outer side of the connecting ring is fixedly connected with a gear ring, and the outer side of the gear ring is engaged with a rack rod.

[0012] Preferably, the inner side of the rack rod is screw-connected with a threaded rod, and both ends of the threaded rod are movably connected with the box body through bearings.

[0013] Specifically, rotating the threaded rod can threadedly drive the rack rod, thereby driving the rack rod to move, the gear ring can engage with the rack rod, thereby driving the rack rod and the connecting ring on the inner side to rotate.

[0014] Preferably, one side of the rack rod abuts against the box body, one end of the extrusion block is wedge-shaped, the outer shape of the protruding block is arc-shaped, and one side of the connecting block is fixedly connected with the box body.

[0015] Preferably, the sealing mechanism comprises a sealing cover threadedly connected with the end of the oil inlet, a limiting rod movably connected with the sealing cover through a rotating shaft, and a spring fixedly connected with one side of the limiting rod.

[0016] Specifically, the spring can push the limiting rod to rotate and reset.

[0017] Preferably, one end of the spring is fixed with the sealing cover, and one end of the sealing cover is provided with a fixing ring.

[0018] Preferably, the inner side of the fixing ring is fixedly connected with the oil inlet, and one side of the fixing ring is provided with a limiting groove matched with the limiting rod.

[0019] Specifically, the limiting rod can be clamped with the limiting groove in the fixing ring, thereby limiting the fixing ring.

[0020] Compared with the prior art, the piston air compressor has the following advantages:

[0021] 1. The piston air compressor, when the box body is opened for maintenance, the threaded rod is rotated to threadedly drive the rack rod, thereby driving the rack rod to move, the rack rod moves to engage with the gear ring on one side, thereby driving the gear ring and the connecting ring to rotate, the connecting ring drives the protruding block to separate from the extrusion of the extrusion block, at this time the tension spring resets to pull the extrusion block to separate from the extrusion of the outer side of the cover plate, at this time the cover plate and the box body can be separated, at this time the inside of the box body can be maintained, and thus the above operation can facilitate the disassembly and maintenance of the crankcase.

[0022] 2. The crankcase structure in the piston air compressor, after filling the inside of the box with lubricating oil, in order to close the oil filling port, by pressing the limiting rod and then rotating the plugging cover and the oil filling port are screwed, when the plugging cover cannot continue to rotate, the limiting rod on one side of the plugging cover will be aligned with the limiting groove on one side of the fixed ring, at this time the limiting rod can be loosened, the spring will reset and push the limiting rod to rotate, so that one end of the limiting rod is clamped with the limiting groove on one side of the fixed ring, at this time the plugging cover cannot be rotated, which can prevent the plugging cover from being accidentally rotated to open the oil filling port, so that the oil filling port of the crankcase can be closed through the above operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic view of the utility model;

[0024] Figure 2 It is a three-dimensional sectional view of the utility model;

[0025] Figure 3 It is a three-dimensional schematic view of the plugging cover of the utility model;

[0026] Figure 4 It is a three-dimensional sectional view of the plugging cover of the utility model;

[0027] Figure 5 It is an enlarged schematic view of A of the utility model;

[0028] Figure 6 It is an enlarged schematic view of B of the utility model.

[0029] In the drawing: 1, box; 2, oil filling port; 3, cover plate; 4, oil return device; 5, connecting pipe; 6, limiting mechanism; 601, fixed block; 602, connecting ring; 603, protruding block; 604, extrusion block; 605, connecting block; 606, tension spring; 607, positioning rod; 608, threaded rod; 609, rack rod; 610, gear ring; 7, plugging mechanism; 701, plugging cover; 702, limiting rod; 703, spring; 704, fixed ring; 705, limiting groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] Please refer to Figures 1-6The utility model provides a kind of technical scheme: a crankcase structure in piston air compressor, it include: box 1 and limiting mechanism 6, the side of box 1 is connected with oil inlet 2, the other side of box 1 is provided with cover plate 3, the side of cover plate 3 is installed with oil return device 4, the side of oil return device 4 is connected with connecting pipe 5, one end of connecting pipe 5 is connected with box 1,

[0032] The side of cover plate 3 is provided with limiting mechanism 6, limiting mechanism 6 includes with the fixed block 601 of being fixedly connected with the side of box 1, the inside sliding connection of fixed block 601 has connecting ring 602, the inside fixed connection of connecting ring 602 has multiple groups of protruding block 603, extrusion block 604 is connected through the outside of connecting ring 602, the outside sliding connection of extrusion block 604 has connecting block 605, one end of oil inlet 2 is provided with plugging mechanism 7;One end of extrusion block 604 is fixedly connected with tension spring 606, the end of tension spring 606 is fixedly connected with connecting block 605, the side of box 1 is fixed with multiple groups of positioning rod 607, the outside of positioning rod 607 is penetrated with cover plate 3;The outside fixed connection of connecting ring 602 has gear ring 610, gear ring 610 is engaged with rack rod 609 outside;The inside screw thread connection of rack rod 609 has threaded rod 608, the both ends of threaded rod 608 are movably connected with box 1 by bearing;The side of rack rod 609 is abutted with box 1, one end of extrusion block 604 is wedge-shaped, the appearance of protruding block 603 is arc-shaped, the side of connecting block 605 is fixedly connected with box 1, the inside of connecting block 605 is provided with sliding slot matched with extrusion block 604, extrusion block 604 and connecting block 605 form sliding structure, the inside of extrusion block 604 is provided with through slot matched with protruding block 603 and connecting ring 602.

[0033] In the specific implementation, when the box 1 is opened for maintenance, the threaded rod 608 is rotated to drive the rack rod 609 to move through threaded transmission, the rack rod 609 is meshed with the gear ring 610 on one side when moving, thereby driving the gear ring 610 and the connecting ring 602 to rotate, the connecting ring 602 drives the protruding block 603 to separate from the extrusion of the extrusion block 604, at this time the tension spring 606 resets to pull the extrusion block 604 to separate from the extrusion of the outer side of the cover plate 3, at this time the cover plate 3 can be separated from the box 1, and the inside of the box 1 can be maintained at this time, when the box 1 needs to be closed, a plurality of positioning holes in the cover plate 3 are connected with a plurality of positioning rods 607 on one side of the box 1, and then the connecting ring 602 is reversed by rotating the threaded rod 608, the connecting ring 602 extrudes the extrusion block 604 through a plurality of protruding blocks 603 inside when rotating, so that the extrusion block 604 moves, the extrusion block 604 stretches the tension spring 606 on one end when moving, and the wedge surface of the extrusion block 604 contacts the bevel on the outer side of the cover plate 3, thereby pushing the sealing gasket on one side of the cover plate 3 to be close to the box 1, the connection of the cover plate 3 and the box 1 is completed, and the crankcase can be conveniently disassembled and maintained through the above operation.

[0034] Please refer to Figures 1-4 The plugging mechanism 7 comprises a plugging cover 701 threadedly connected with the end of the oil injection port 2, a limiting rod 702 movably connected with the plugging cover 701 through a rotating shaft, and a spring 703 fixedly connected with one side of the limiting rod 702. One end of the spring 703 is fixed with the plugging cover 701, one end of the plugging cover 701 is provided with a fixed ring 704, the inner side of the fixed ring 704 is fixedly connected with the oil injection port 2, one side of the fixed ring 704 is provided with a limiting groove 705 matched with the limiting rod 702, and the plugging cover 701 and the limiting rod 702 constitute a rotating mechanism through the rotating shaft.

[0035] In the specific implementation, after the lubricating oil is injected into the inside of the box 1, in order to close the oil injection port 2, the limiting rod 702 is pressed and then the plugging cover 701 is threadedly transmitted with the oil injection port 2, when the plugging cover 701 cannot continue to rotate, the limiting rod 702 on one side of the plugging cover 701 is aligned with the limiting groove 705 on one side of the fixed ring 704, at this time the limiting rod 702 can be loosened, the spring 703 resets to drive the limiting rod 702 to rotate, thereby making one end of the limiting rod 702 clamped with the limiting groove 705 on one side of the fixed ring 704, at this time the plugging cover 701 cannot be rotated, and the plugging cover 701 cannot be accidentally rotated to open the oil injection port 2, so that the oil injection port 2 of the crankcase can be conveniently closed through the above operation.

[0036] In summary: in the piston air compressor using the crankcase structure, first the inside of the box 1 can be injected through the oil port 2 lubricating oil, thereby lubricating the internal crankshaft, the contents of this description not described in detail belong to the prior art known to those skilled in the art.

[0037] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crankcase structure in a piston air compressor, comprising: The utility model relates to a kind of oiling device, including box (1) and limiting mechanism (6), one side of the box (1) is connected with oil inlet (2), the other side of the box (1) is provided with cover plate (3), one side of the cover plate (3) is installed with oil return device (4), one side of the oil return device (4) is connected with connecting pipe (5), one end of the connecting pipe (5) is connected with box (1), characterized by, One side of the cover plate (3) is provided with limiting mechanism (6), the limiting mechanism (6) includes fixed block (601) with one side of box (1) fixedly connected, the inside of the fixed block (601) is slidably connected with connecting ring (602), the inner side of the connecting ring (602) is fixedly connected with multiple groups of protruding blocks (603), the outer side of the connecting ring (602) is connected with extrusion block (604) in penetration, the outer side of the extrusion block (604) is slidably connected with connecting block (605), one end of the oil inlet (2) is provided with plugging mechanism (7).

2. A crankcase structure in a piston air compressor according to claim 1, characterized by: One end of the extrusion block (604) is fixedly connected with tension spring (606), one end of the tension spring (606) is fixedly connected with connecting block (605), one side of the box (1) is fixed with multiple groups of positioning rods (607), the outer side of the positioning rod (607) is penetrated with cover plate (3).

3. A crankcase structure in a piston air compressor according to claim 1, characterized by: The outer side of the connecting ring (602) is fixedly connected with gear ring (610), the outer side of the gear ring (610) is meshingly connected with rack rod (609).

4. A crankcase structure in a piston air compressor according to claim 3, characterized by: The inside of the rack rod (609) is threadedly connected with threaded rod (608), both ends of the threaded rod (608) are movably connected with box (1) by bearing.

5. A crankcase structure in a piston air compressor according to claim 3, characterized by: One side of the rack rod (609) is abutted with box (1), one end of the extrusion block (604) is wedge-shaped, the outer shape of the protruding block (603) is arc-shaped, one side of the connecting block (605) is fixedly connected with box (1).

6. A crankcase structure in a piston air compressor according to claim 1, characterized by: The plugging mechanism (7) includes plugging cover (701) threadedly connected with the end of oil inlet (2), the inside of the plugging cover (701) is movably connected with limiting rod (702) by pivot, one side of the limiting rod (702) is fixedly connected with spring (703).

7. A crankcase structure in a piston air compressor according to claim 6, characterized in that: One end of the spring (703) is fixed with plugging cover (701), one end of the plugging cover (701) is provided with fixed ring (704).

8. A crankcase structure in a piston air compressor according to claim 7, characterized by: The inner side of the fixed ring (704) is fixedly connected with oil inlet (2), one side of the fixed ring (704) is provided with limiting groove (705) matched with limiting rod (702).

Images