A toothed drive grease gun

Abstract

The application discloses a tooth transmission type grease gun and relates to the technical field of grease guns. The grease gun comprises a cylinder body, an outlet cap is arranged on the liquid outlet side of the cylinder body, a positioning sleeve is fixed to the other side of the cylinder body, a static pressure handle is fixed to the bottom end of the positioning sleeve, and side plates are fixed to the two sides of the positioning sleeve. When the grease is extruded, the dynamic pressure handle is pressed, the dynamic pressure handle rotates clockwise around the second pin shaft, the first pressure head is extruded with the gear assembly teeth, the gear assembly is driven to rotate clockwise, the dynamic pressure gear assembly and the piston head are driven to move to the oil outlet pipe direction, the grease is extruded, when the oil is sucked, the outlet cap of the cylinder body is removed, the dynamic pressure gear assembly is pulled backward, the cylinder body sucks the grease, the engagement transmission of the gear and the rack makes the movement of the piston head in the cylinder body more stable and uniform, and the problem of intermittent oil supply caused by the gap of the traditional grease gun is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of grease gun technology, specifically a gear-driven grease gun. Background Technology

[0002] In oil production sites, the maintenance of equipment such as pumping units, screw pumps, and centrifugal pumps, as well as the routine maintenance of valve bearings, lead screws, and other parts, requires the application of grease for lubrication.

[0003] During the grease filling process of a traditional grease gun, air bubbles are present in the grease, and these bubbles continuously accumulate inside the grease gun barrel, forming gaps. When using a grease gun to add grease, the push and pull levers are pushed and pulled many times, and the existence of gaps causes the grease gun to supply grease intermittently, resulting in a long grease filling time, low labor efficiency, and high labor intensity. Summary of the Invention

[0004] The purpose of this invention is to provide a gear-driven grease gun to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gear-driven grease gun, comprising a cylinder, an outlet cap provided on the liquid outlet side of the cylinder, a positioning sleeve fixed on the other side of the cylinder, a static pressure handle fixed at the bottom end of the positioning sleeve, side plates fixed on both sides of the positioning sleeve, a second pin movably connected between the two side plates, and a gear assembly fixed on the shaft of the second pin.

[0006] An extension plate is fixed to the bottom of the positioning sleeve, and a dynamic pressure tooth assembly is movably connected to the top of the extension plate through a connecting part. A piston head is fixed to the end face of the dynamic pressure tooth assembly located inside the cylinder.

[0007] A dynamic pressure handle is provided on the side of the static pressure handle. A U-shaped plate is formed on the top of the dynamic pressure handle. One side of the U-shaped plate is movably connected to the second pin shaft, and a pusher is provided on the other side of the U-shaped plate.

[0008] Preferably, the outlet cap is movably screwed to the pipe on the liquid outlet side of the cylinder.

[0009] Preferably, an oil outlet pipe is fixedly connected to one side of the outlet cap.

[0010] Preferably, the dynamic pressure gear assembly includes a base plate, with two racks fixed to the top of the base plate, and the gear assembly includes two gears, with the racks and gears meshing with each other.

[0011] Preferably, the connecting part includes a shaped groove fixedly formed on the top of the extension plate and a shaped block fixed on the bottom of the base plate, wherein the shaped groove and the shaped block are adapted to each other.

[0012] Preferably, the pushing member includes a first pin that is movably connected to the plate body on the other side of the U-shaped plate. A positive and negative paddle is fixed on the shaft of the first pin, and a first pressing head is formed on the side of the positive and negative paddle facing the gear assembly.

[0013] A mounting cap is fixed to the side of the U-shaped plate, a spring is fixed inside the mounting cap, and a push block is fixed to the end of the spring. A second pressing head is formed on the side of the forward and reverse paddles facing away from the gear assembly, and the second pressing head abuts against the push block.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This gear-driven grease gun, when dispensing grease, requires pressing the dynamic pressure handle, which rotates clockwise around the second pin. The first pressure head presses against the gear assembly, causing the gear assembly to rotate clockwise, thus driving the dynamic pressure gear assembly and piston head towards the oil outlet to dispense grease. When suctioning grease, the cylinder outlet cap is removed, and the dynamic pressure gear assembly is pulled back, drawing grease into the cylinder. Through the meshing of the gears and rack, the piston head moves more smoothly and evenly within the cylinder, effectively reducing the intermittent grease supply problem caused by gaps in traditional grease guns. It also reduces the number of times the pressure lever needs to be pushed and pulled, shortens the grease filling time, improves labor efficiency, and reduces the workload of operators. During grease filling, this high-flow-rate grease suction method reduces the amount of air bubbles in the cylinder, ensuring the continuity and stability of the grease gun's supply. Attached Figure Description

[0016] Figure 1 This is a half-sectional view of the present invention;

[0017] Figure 2 This is an axial view of the present invention.

[0018] In the diagram: 1. Static pressure handle; 2. Dynamic pressure handle; 3. Gear assembly; 4. Positioning sleeve; 5. Dynamic pressure gear assembly; 6. Positive and negative levers; 601. First pressure head; 7. Spring; 8. Mounting cap; 9. First pin; 10. Second pin; 11. Cylinder; 12. Outlet cap; 13. Oil outlet pipe; 14. Piston head. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-2As shown, it includes a cylinder 11 made of high-strength engineering plastic. The cylinder 11 is designed with a transparent material to facilitate real-time observation of the remaining amount and flow status of the grease inside. An outlet cap 12 is movably installed on the outlet side of the cylinder 11 by means of a threaded connection. The outlet cap 12 is integrally formed by brass forging process, and its internal flow channel is precision polished to effectively reduce the flow resistance of the grease.

[0021] A stainless steel oil outlet pipe 13 is fixed to the left side of the outlet cap 12. The end of the oil outlet pipe 13 is equipped with a quick connector, which is compatible with mainstream grease nipples on the market. A positioning sleeve 4 is fixed to the right side of the cylinder 11 by an internal hex bolt. The bottom end of the positioning sleeve 4 is fixed to the hydrostatic handle 1. A side plate with a thickness of 3-5mm is symmetrically fixed to the side of the positioning sleeve 4. A shaft hole is opened on the side plate. A second pin 10 is movably installed in the shaft hole. A gear assembly 3 is fixed on the shaft of the second pin 10. The gear assembly 3 consists of two gears.

[0022] The bottom of the positioning sleeve 4 is integrally formed with an extension plate. The top of the extension plate has a T-shaped or dovetail-shaped groove. The top of the extension plate is movably connected to the dynamic pressure gear assembly 5 through a connecting part. The bottom plate of the dynamic pressure gear assembly 5 is made of aluminum alloy extrusion molding. Two racks are set parallel to each other at the top. The racks and the gears of the gear assembly 3 form a precision meshing transmission pair. The transmission gap is controlled within 0.1mm. A special-shaped block is formed on the bottom plate of the dynamic pressure gear assembly 5. The special-shaped groove and the special-shaped block at the bottom of the dynamic pressure gear assembly 5 form a sliding fit. Corresponding to the special-shaped groove, the special-shaped block is T-shaped or dovetail-shaped. In this way, when the dynamic pressure gear assembly 5 performs linear reciprocating motion, the special-shaped block can slide stably along the special-shaped groove, effectively preventing the dynamic pressure gear assembly 5 from shifting laterally during the movement, thereby ensuring the meshing accuracy of the rack and gear.

[0023] The front end of the dynamic pressure gear assembly 5 located inside the cylinder 11 is fixed with a piston head 14 made of polyurethane material. The outer circle of the piston head 14 is provided with two sealing rings to ensure the sealing performance with the inner wall of the cylinder.

[0024] A dynamic pressure handle 2 is provided on the right side of the static pressure handle 1. The top of the dynamic pressure handle 2 forms a U-shaped plate structure. The left side of the U-shaped plate is movably connected to the second pin 10. An installation hole is provided on the right side of the plate. The first pin 9 is movably installed in the installation hole. A positive and negative paddle 6 is fixed on the shaft of the first pin 9. The front end of the positive and negative paddle 6 forms a first abutment head 601, which contacts the gear tooth surface of the gear assembly 3. An installation cap 8 is fixed on the right side of the U-shaped plate. A spring 7 is pre-installed inside the installation cap 8. A push block is fixed to the end of the spring 7. The push block abuts against the second abutment head at the rear end of the positive and negative paddle 6. The pre-tightening force of the spring 7 ensures that the positive and negative paddle 6 always maintains contact with the gear.

[0025] When extruding grease, press the dynamic pressure handle 2. The dynamic pressure handle 2 rotates clockwise around the second pin 10. At this time, the spring 7 is compressed. The first pressure head 601 presses against the teeth of the gear assembly 3, causing the gear assembly 3 to rotate clockwise. This drives the dynamic pressure gear assembly 5 and the piston head 14 to move towards the oil outlet pipe 13, extruding grease. After a single extrusion is completed, pull the dynamic pressure handle 2 backward to reset the forward and reverse paddles 6. When sucking grease, remove the outlet cap 12 and pull the dynamic pressure gear assembly 5 backward, and the cylinder 11 sucks in grease.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A gear-driven grease gun, comprising a barrel (11), characterized in that: An outlet cap (12) is provided on the liquid outlet side of the cylinder (11), and a positioning sleeve (4) is fixed on the other side of the cylinder (11). A static pressure handle (1) is fixed at the bottom end of the positioning sleeve (4). Side plates are fixed on both sides of the positioning sleeve (4), and a second pin (10) is movably connected between the two side plates. A gear assembly (3) is fixed on the shaft of the second pin (10). An extension plate is fixed to the bottom of the positioning sleeve (4), and a dynamic pressure tooth assembly (5) is movably connected to the top of the extension plate through a connecting part. A piston head (14) is fixed to the end face of the dynamic pressure tooth assembly (5) located inside the cylinder (11). A dynamic pressure handle (2) is provided on the side of the static pressure handle (1). A U-shaped plate is formed on the top of the dynamic pressure handle (2). One side of the U-shaped plate is movably connected to the second pin (10). A pusher is provided on the other side of the U-shaped plate.

2. The gear-driven grease gun according to claim 1, characterized in that: The outlet cap (12) is movably screwed to the liquid outlet side of the cylinder (11).

3. The gear-driven grease gun according to claim 1, characterized in that: The outlet cap (12) is fixedly connected to an oil outlet pipe (13) on one side.

4. A gear-driven grease gun according to claim 1, characterized in that: The dynamic pressure gear assembly (5) includes a base plate with two racks fixed at the top of the base plate. The gear assembly (3) includes two gears, and the racks and gears mesh with each other.

5. A gear-driven grease gun according to claim 4, characterized in that: The connecting part includes a shaped groove fixedly formed on the top of the extension plate and a shaped block fixed on the bottom of the base plate, with the shaped groove and the shaped block being adapted to each other.

6. A gear-driven grease gun according to claim 4, characterized in that: The pusher includes a first pin (9) that is movably connected to the plate body on the other side of the U-shaped plate. A positive and negative paddle (6) is fixed on the shaft of the first pin (9). A first pressing head (601) is formed on the side of the positive and negative paddle (6) facing the gear assembly (3). A mounting cap (8) is fixed to the side of the U-shaped plate. A spring (7) is fixed inside the mounting cap (8). A push block is fixed to the end of the spring (7). A second pressing head is formed on the side of the positive and negative paddle (6) facing away from the gear assembly (3). The second pressing head abuts against the push block.

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