Grease gun with double oil push rods

Abstract

The utility model provides a grease gun with double grease pushing rods, and aims to solve the problems that the grease gun in the prior art is only provided with one grease pushing rod, the grease outlet efficiency is low when the grease gun is used, and the grease gun cannot be adjusted according to requirements. A grease gun with double grease pushing rods comprises a grease storage gun provided with a cavity; a first oil rod cavity and a second oil rod cavity are formed in the gun cover in parallel; a first transmission assembly is arranged between the rocking handle and the first oil pushing rod, and a second transmission assembly is arranged between the rocking handle and the second oil pushing rod; when the first transmission assembly is in an unlocking state, the rocking handle is rotated to drive the second oil pushing rod to slide back and forth along the second oil rod cavity; when the first transmission assembly is in the locked state, the rocking handle is rotated to drive the second oil pushing rod to slide in a reciprocating mode along the second oil rod cavity, and the first oil pushing rod synchronously slides in a reciprocating mode along the first oil rod cavity. The oil pump is adjustable in oil outlet quantity.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating oil filling tools, and in particular relates to a grease gun with double oil push rods. Background Art

[0002] A grease gun is a tool for adding grease to mechanical equipment. First, add the grease into the oil reservoir of the grease gun in advance. When filling the mechanical equipment, the handle needs to be opened and closed repeatedly to squeeze the grease in the oil reservoir from the oil outlet valve. Existing grease guns generally include an oil reservoir, a gun cover, and a crank handle. An oil push rod is provided on the gun cover. A transmission assembly is provided between the oil push rod and the crank handle. When the crank handle is turned, the transmission assembly drives the oil push rod to slide back and forth to complete the action of squeezing out the lubricating oil. However, the grease gun in the prior art is only provided with one oil push rod, and the oil discharge efficiency is low during use, and it cannot be adjusted according to demand. Utility Model Content

[0003] The utility model provides a grease gun with double oil pushing rods, aiming to solve the problems that the grease gun in the prior art is only provided with one oil pushing rod, the oil discharge efficiency is low during use, and the grease gun cannot be adjusted according to demand.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A grease gun with double oil push rods, comprising:

[0006] An oil storage gun is provided with a cavity;

[0007] A gun cover is arranged on the oil storage gun, wherein a first oil rod cavity and a second oil rod cavity are arranged in parallel in the gun cover, and an oil inlet and an oil outlet are arranged on the gun cover, wherein the first oil rod cavity and the second oil rod cavity are both connected to the cavity body through the oil inlet, and the first oil rod cavity and the second oil rod cavity are both connected to the outside through the oil outlet; and,

[0008] a first oil push rod and a second oil push rod, wherein the first oil push rod is slidably disposed in the first oil rod cavity, and the second oil push rod is slidably disposed in the second oil rod cavity;

[0009] A crank handle is rotatably connected to the gun cover, and a first transmission assembly is provided between the crank handle and the first oil push rod, and a second transmission assembly is provided between the crank handle and the second oil push rod; the first transmission assembly includes a locked state and an unlocked state relative to the crank handle; when the first transmission assembly is in the unlocked state, the second oil push rod can be driven to slide reciprocally along the second oil rod cavity by rotating the crank handle, and the first oil push rod cannot be driven to slide reciprocally along the first oil rod cavity; when the first transmission assembly is in the locked state, the second oil push rod can be driven to slide reciprocally along the second oil rod cavity by rotating the crank handle, and the first oil push rod can be synchronously driven to slide reciprocally along the first oil rod cavity.

[0010] A further solution: the first oil rod chamber and the second oil rod chamber are arranged vertically and side by side, and a first channel is provided between the first oil rod chamber and the oil inlet, and a second channel is provided between the second oil rod chamber and the oil inlet.

[0011] Based on the above technical solution: the first oil rod chamber is connected to the cavity through the first channel, and the second oil rod chamber is connected to the cavity through the second channel, so that when the first transmission assembly is in an unlocked state, the first oil push rod always blocks the first channel, which is convenient for adjusting the oil output; and the first oil rod chamber and the second oil rod chamber are arranged side by side up and down, which is convenient for separately assembling the first transmission assembly and the second transmission assembly, making the overall structure more optimized.

[0012] A further solution: a row of meshing teeth is provided on the first oil push rod, and the first transmission assembly includes a first sector gear located at the lower side of the first oil push rod, the lower part of the first sector gear is connected to the gun cover through a first pin shaft, and the upper part of the first sector gear is connected to the crank handle through a latch; when the first transmission assembly is in a locked state, the latch is locked with the first sector gear, and the first sector gear can be driven to rotate by turning the crank handle, and the first sector gear drives the first oil push rod to slide along the first oil rod cavity by engaging with the meshing teeth; when the first transmission assembly is in an unlocked state, the latch is unlocked from the first sector gear, and the first sector gear is not driven to rotate by turning the crank handle.

[0013] Based on the above technical solution: the first sector gear engages with the meshing teeth on the first oil push rod to drive the first oil push rod to slide; the upper part of the first sector gear is connected to the crank handle through a latch, so that when the latch is locked with the first sector gear, turning the crank handle can drive the first sector gear to rotate, thereby driving the first oil push rod to slide; when the latch is unlocked with the first sector gear, turning the crank handle cannot drive the first sector gear to rotate, thereby unable to drive the first oil push rod to slide; locking and unlocking are achieved by the latch, the structure is simpler and the installation is more convenient.

[0014] A further solution: the latch slides through the crank handle, the gun cover and the first sector gear, and the latch includes a thin section and a thick section; the first sector gear is provided with an arc hole, and the arc hole is provided with a positioning hole that matches the thick section of the latch; when the thick section of the latch is located in the positioning hole, the latch is locked with the first sector gear; when the thin section of the latch is located in the arc hole, the latch is unlocked from the first sector gear, and when the crank handle is turned, the thin section of the latch slides along the arc hole.

[0015] Based on the above technical solution: by setting the latch to include a thin section and a thick section, when the thick section is located in the positioning hole, the latch is locked with the first sector gear, and at this time, turning the crank can synchronously drive the first sector gear to rotate through the latch; when the thin section is located in the arc hole, the latch and the first sector gear are unlocked, the latch can no longer drive the first sector gear to rotate, and the thin section of the latch can slide along the arc hole when the crank is turned.

[0016] A further solution: a clamping portion is provided at one end of the thick section of the latch, a spring is provided between one end of the thin section and the crank, and a first clamping groove and a second clamping groove are provided on the crank to match the clamping portion; when the clamping portion is located in the first clamping groove, the thick section of the latch is disengaged from the positioning hole and the thin section is located in the arc hole, the spring is compressed, and the latch and the first sector gear are unlocked; when the clamping portion is located in the second clamping groove and the thick section of the latch is located in the positioning hole, the spring is reset and the latch and the first sector gear are locked.

[0017] Based on the above technical solution: the above arrangement enables the latch to be locked in the first slot or the second slot by pulling the latch, thereby locking or unlocking the latch and the first sector gear, and the operation is very simple and convenient.

[0018] A further solution is that a boss is provided at the end of the thin section of the latch, a gasket sleeved on the latch is provided on one side of the crank handle close to the boss, and the spring is located between the boss and the gasket.

[0019] A further solution: a clamping portion is provided at one end of the thin section of the latch, a spring is provided between one end of the thick section and the crank, and a first clamping groove and a second clamping groove are provided on the crank to match the clamping portion; when the clamping portion is located in the first clamping groove and the thick section of the latch is located in the positioning hole, the spring is compressed, and the latch is locked with the first sector gear; when the clamping portion is located in the second clamping groove, under the action of the spring, the thick section of the latch is disengaged from the positioning hole and the thin section is located in the arc hole, and the latch is unlocked from the first sector gear.

[0020] Based on the above technical solution: the above arrangement enables the latch to be locked in the first slot or the second slot by pulling the latch, thereby locking or unlocking the latch and the first sector gear, and the operation is very simple and convenient.

[0021] A further solution: the first card slot and the second card slot are arranged perpendicular to each other.

[0022] Based on the above technical solution: the above arrangement enables the engaging portion to be engaged in the first engaging slot or the second engaging slot by rotating the engaging pin when the engaging pin is pulled, which is convenient for user operation.

[0023] A further solution: the clamping portion is a pull ring.

[0024] Based on the above technical solution: the clamping part is set as a pull ring, which is convenient for the user to pull the latch, thereby facilitating the user's operation.

[0025] A further solution: a row of meshing teeth is provided on the second oil push rod, the second transmission assembly includes a second sector gear located on the upper side of the second oil push rod, the upper end of the second sector gear, the upper end of the crank handle and the gun cover are hinged by a second pin shaft; the lower side of the second sector gear is fixedly connected to the crank handle by a third pin shaft.

[0026] Based on the above technical solution: the above arrangement enables the crank to synchronously drive the second sector gear to rotate when the crank is turned, thereby driving the second oil push rod to work.

[0027] The beneficial effects of the utility model are:

[0028] The utility model arranges a first oil rod chamber and a second oil rod chamber in parallel in the gun cover, and both oil rod chambers are connected to the oil outlet and the oil inlet, the crank handle drives the first oil push rod to slide through the first transmission component, and the crank handle drives the second oil push rod to slide through the second transmission component, and the first transmission component is arranged to include a locked state and an unlocked state, so that when the first transmission component is in the unlocked state, the user drives the second oil push rod to work through the second transmission component during the process of turning the crank handle, while the first oil push rod does not work at this time, and the oil output is small and the efficiency is low at this time; when the first transmission component is in the locked state, the user drives the second oil push rod to work through the second transmission component and synchronously drives the first oil push rod to work at this time, and the oil output is large and the oil output efficiency is high; the above arrangement makes it possible to adjust the oil output and the oil output efficiency by changing the state of the first transmission component, and in actual application, the user can adjust according to specific needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 The utility model is a structural schematic diagram of a grease gun with double oil push rods.

[0031] Figure 2 The utility model is a schematic diagram of the explosion structure of a grease gun with double oil push rods.

[0032] Figure 3 The utility model discloses a cross-sectional structural diagram of a grease gun with double oil push rods.

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the thin section and the thick section of the latch.

[0034] Figure 5 It is a schematic diagram of the structure of the gun cover, the first sector gear and the second sector gear.

[0035] Figure 6 It is a schematic diagram of the structure of the first sector gear.

[0036] Description of the numbers in the figure:

[0037] 1-Oil storage gun; 11-Cavity; 2-Gun cover; 21-Oil inlet; 22-Oil outlet; 23-First oil rod cavity; 24-Second oil rod cavity; 25-First guide hole; 26-Second guide hole; 3-Crank handle; 31-Gasket; 32-First slot; 33-Second slot; 4-First sector gear; 41-First pin shaft; 42-Arc hole; 421-Positioning hole; 5-Second sector gear; 51-Second pin shaft; 52-Third pin shaft; 6-Pin; 61-Thick section; 62-Thin section; 63-Boss; 64-Pull ring; 7-Spring; 8-First oil push rod; 9-Second oil push rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0039] like Figures 1 to 3 As shown, a grease gun with double oil push rods comprises:

[0040] The oil storage gun 1 is provided with a cavity 11;

[0041] A gun cover 2 is arranged on the oil storage gun 1, and a first oil rod cavity 23 and a second oil rod cavity 24 are arranged in parallel in the gun cover 2. An oil inlet 21 and an oil outlet 22 are arranged on the gun cover 2. The first oil rod cavity 23 and the second oil rod cavity 24 are both connected to the cavity body 11 through the oil inlet 21, and the first oil rod cavity 23 and the second oil rod cavity 24 are both connected to the outside through the oil outlet 22; and,

[0042] A first oil push rod 8 and a second oil push rod 9, wherein the first oil push rod 8 is slidably disposed in the first oil rod cavity 23, and the second oil push rod 9 is slidably disposed in the second oil rod cavity 24;

[0043] The crank handle 3 is rotatably connected to the gun cover 2, and a first transmission assembly is provided between the crank handle 3 and the first oil push rod 8, and a second transmission assembly is provided between the crank handle 3 and the second oil push rod 9; the first transmission assembly includes a locked state and an unlocked state relative to the crank handle 3; when the first transmission assembly is in the unlocked state, the second oil push rod 9 can be driven to slide back and forth along the second oil rod cavity 24 by rotating the crank handle 3, and the first oil push rod 8 cannot be driven to slide back and forth along the first oil rod cavity 23, that is, the second oil push rod 9 works and the first oil push rod 8 does not move; when the first transmission assembly is in the locked state, the second oil push rod 9 can be driven to slide back and forth along the second oil rod cavity 24 by rotating the crank handle 3, and the first oil push rod 8 can be synchronously driven to slide back and forth along the first oil rod cavity 23, that is, the first oil push rod 8 and the second oil push rod 9 move synchronously.

[0044] In this embodiment, Figure 2 and Figure 3 As shown, the first oil rod chamber 23 and the second oil rod chamber 24 are preferably arranged in parallel up and down, and a first channel is provided between the first oil rod chamber 23 and the oil inlet 21, and a second channel is provided between the second oil rod chamber 24 and the oil inlet 21. The first channel and the second channel can be arranged in the front-to-back direction, so that the cavity 11 is connected to the first oil rod chamber 23 through the first channel, and the cavity 11 is connected to the second oil rod chamber 24 through the second channel, and the first channel and the second channel are independent of each other. When the first transmission assembly is in the unlocked state, the first oil push rod 8 always blocks the first channel, so that the second oil push rod 9 works independently, and the oil output is small.

[0045] In this embodiment, Figures 2 to 6As shown, it is preferred that the first oil push rod 8 is located at the lower side of the second oil push rod 9. As a specific structure of the first transmission component, the first oil push rod 8 is provided with a row of meshing teeth, and the meshing teeth are arranged downward. The first transmission component includes a first sector gear 4 located at the lower side of the first oil push rod 8, the lower part of the first sector gear 4 is connected to the gun cover 2 through a first pin shaft 41, the first sector gear 4 can rotate relative to the gun cover 2 around the first pin shaft 41, thereby driving the first oil push rod 8 to slide, and the upper part of the first sector gear 4 is connected to the crank handle 3 through a latch pin 6; when the first transmission component is in a locked state, the latch pin 6 is locked with the first sector gear 4, and the first sector gear 4 can be driven to rotate by turning the crank handle 3, and the first sector gear 4 drives the first oil push rod 8 to slide along the first oil rod cavity 23 by meshing with the meshing teeth; when the first transmission component is in an unlocked state, the latch pin 6 is unlocked from the first sector gear 4, and the first sector gear 4 is not driven to rotate by turning the crank handle 3. Specifically, the crank 3 is provided with a through hole for inserting the latch 6. When the crank 3 is rotated, the crank 3 synchronously drives the latch 6 to move. When the latch 6 is locked with the first sector gear 4, the crank 3 can drive the first sector gear 4 to rotate through the latch 6. When the latch 6 is unlocked from the first sector gear 4, the crank 3 cannot drive the first sector gear 4 to rotate through the latch 6.

[0046] In this embodiment, Figures 2 to 5As shown, in order to facilitate user operation, the latch 6 is slidably passed through the crank handle 3, the gun cover 2 and the first sector gear 4, and the latch 6 includes a thin section 62 and a thick section 61, which are divided according to the diameter of the latch 6; the first sector gear 4 is provided with an arc hole 42, and a positioning hole 421 is provided in the arc hole 42 to match the thick section 61 of the latch 6. When the thick section 61 is located in the positioning hole 421, the latch 6 is locked with the first sector gear 4; when the thick section 61 of the latch 6 is located in the positioning hole 421, the latch 6 is locked with the first sector gear 4; when the thin section 62 of the latch 6 is located in the arc hole 42, the latch 6 is unlocked from the first sector gear 4, and when the crank handle 3 is rotated, the thin section 62 of the latch 6 slides along the arc hole 42. Specifically, the positioning hole 421 can be set on the side close to the oil storage gun 1, the diameter of the positioning hole 421 is larger than the diameter of the arc hole 42, and the diameter of the thin section 62 of the latch 6 is smaller than the diameter of the arc hole 42, so that when the thin section 62 of the latch 6 is located in the positioning hole 421 or the arc hole 42, the latch 6 cannot be locked with the first sector gear 4 and can only slide along the arc hole 42. In order to facilitate the rotation of the first sector gear 4 relative to the gun cover 2, the present embodiment is provided with an arc-shaped first guide hole 25 on the gun cover 2, and the diameter of the first guide hole 25 is set larger than the diameter of the thick section 61 of the latch 6, so that when the handle 3 is turned, the latch 6 can slide along the first guide hole 25. By pulling the latch 6, the thick section 61 of the latch 6 can slide into the positioning hole 421, or the thin section 62 of the latch 6 can slide into the arc hole 42.

[0047] In this embodiment, as a specific structure of the latch 6, a clamping portion is provided at one end of the thick section 61 of the latch 6, a spring 7 is provided between one end of the thin section 62 and the crank 3, and a first clamping groove 32 and a second clamping groove 33 matching the clamping portion are provided on the crank 3; when the clamping portion is located in the first clamping groove 32, the thick section 61 of the latch 6 is disengaged from the positioning hole 421 and the thin section 62 is located in the arc hole 42, the spring 7 is compressed, and the latch 6 is unlocked from the first sector gear 4. At this time When the crank 3 is turned, the crank 3 cannot drive the first sector gear 4 to rotate through the latch 6, so that the first oil push rod 8 does not work; when the clamping portion is located in the second clamping groove 33 and the thick section 61 of the latch 6 is located in the positioning hole 421, the spring 7 is reset and the latch 6 is locked with the first sector gear 4. At this time, when the crank 3 is turned, the crank 3 can drive the first sector gear 4 to rotate through the latch 6, and the first sector gear 4 drives the first oil push rod 8 to slide back and forth along the first oil rod cavity 23, thereby increasing the oil output. In this scheme, in order to facilitate the installation of the spring 7, this embodiment is provided with a boss 63 at the end of the thin section 62 of the latch 6, and a gasket 31 sleeved on the latch 6 is provided on the side of the crank 3 close to the boss 63, and the spring 7 is located between the boss 63 and the gasket 31.

[0048] In this embodiment, as another specific structure of the latch 6, a clamping portion is provided at one end of the thin segment 62 of the latch 6, a spring 7 is provided between one end of the thick segment 61 and the crank 3, and a first clamping groove 32 and a second clamping groove 33 matching the clamping portion are provided on the crank 3; when the clamping portion is located in the first clamping groove 32 and the thick segment 61 of the latch 6 is located in the positioning hole 421, the spring 7 is compressed, and the latch 6 is locked with the first sector gear 4; when the clamping portion is located in the second clamping groove 33, under the action of the spring 7, the thick segment 61 of the latch 6 is disengaged from the positioning hole 421 and the thin segment 62 is located in the arc hole 42, and the latch 6 is unlocked from the first sector gear 4.

[0049] In this embodiment, Figure 5 As shown, the first slot 32 and the second slot 33 are preferably arranged perpendicular to each other. The clamping portion is preferably a pull ring 64. The pull ring 64 is convenient for the user to pull the latch 6. The depth of the first slot 32 is set to be smaller than the depth of the second slot 33. When the pull ring 64 is pulled, the latch 6 is rotated to make the pull ring 64 stuck in the first slot 32 or the second slot 33. When the pull ring 64 is stuck in the first slot 32, it abuts against the bottom wall of the first slot 32 under the action of the spring 7. When the pull ring 64 is stuck in the second slot 33, it abuts against the bottom wall of the second slot 33 under the action of the spring 7.

[0050] In this embodiment, Figure 2 and Figure 3 As shown, as a specific embodiment of the second transmission assembly, the second oil push rod 9 is provided with a row of meshing teeth, which are arranged upward, and the second transmission assembly includes a second sector gear 5 located on the upper side of the second oil push rod 9, and the upper end of the second sector gear 5, the upper end of the crank 3 and the gun cover 2 are hinged through a second pin 51; the lower side of the second sector gear 5 is fixedly connected to the crank 3 through a third pin 52. In order to facilitate the rotation of the third pin 52, the gun cover 2 is provided with an arc-shaped second guide hole 26 that cooperates with the third pin 52. When the crank 3 drives the second sector gear 5 to rotate through the third pin 52, the latch 6 slides along the second guide hole 26.

[0051] Working principle description:

[0052] When the thin segment 62 of the latch 6 is located in the arc hole 42, since the diameter of the thin segment 62 is smaller than the diameter of the arc hole 42, the latch 6 cannot be locked with the first sector gear 4, and the crank 3 cannot drive the first sector gear 4 to rotate through the latch 6. The crank 3 can only drive the second oil push rod 9 to slide back and forth through the second sector gear 5, and the lubricating oil entered into the second oil rod cavity 24 is squeezed out through the oil outlet 22. At this time, the oil output is small.

[0053] When the thick section 61 of the latch 6 is located in the positioning hole 421, the latch 6 will lock the crank handle 3 and the first sector gear 4. When the crank handle 3 is turned, the crank handle 3 can drive the first sector gear 4 to rotate through the latch 6. The rotation of the first sector gear 4 drives the first oil push rod 8 to slide back and forth in the first oil rod cavity 23, thereby squeezing the lubricating oil entering the first oil rod cavity 23 through the oil outlet 22. At the same time, the crank handle 3 drives the second oil rod cavity 24 to work through the second sector gear 5, thereby increasing the oil output.

[0054] The present utility model is not limited to the above optional implementation modes. Under the premise of not conflicting with each other, the various schemes can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present utility model. However, no matter what changes are made in their shapes or structures, all technical schemes that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A grease gun with double push rods, characterized in that: include: An oil storage gun is provided with a cavity; A gun cover is arranged on the oil storage gun, wherein a first oil rod cavity and a second oil rod cavity are arranged in parallel in the gun cover, and an oil inlet and an oil outlet are arranged on the gun cover, wherein the first oil rod cavity and the second oil rod cavity are both connected to the cavity body through the oil inlet, and the first oil rod cavity and the second oil rod cavity are both connected to the outside through the oil outlet; and, a first oil push rod and a second oil push rod, wherein the first oil push rod is slidably disposed in the first oil rod cavity, and the second oil push rod is slidably disposed in the second oil rod cavity; A crank handle is rotatably connected to the gun cover, and a first transmission assembly is provided between the crank handle and the first oil push rod, and a second transmission assembly is provided between the crank handle and the second oil push rod; the first transmission assembly includes a locked state and an unlocked state relative to the crank handle; when the first transmission assembly is in the unlocked state, the second oil push rod can be driven to slide reciprocally along the second oil rod cavity by rotating the crank handle, and the first oil push rod cannot be driven to slide reciprocally along the first oil rod cavity; when the first transmission assembly is in the locked state, the second oil push rod can be driven to slide reciprocally along the second oil rod cavity by rotating the crank handle, and the first oil push rod can be synchronously driven to slide reciprocally along the first oil rod cavity.

2. A grease gun with double oil push rods according to claim 1, characterized in that: The first oil rod cavity and the second oil rod cavity are arranged vertically and side by side, and a first passage is provided between the first oil rod cavity and the oil inlet, and a second passage is provided between the second oil rod cavity and the oil inlet.

3. A grease gun with double oil push rods according to claim 2, characterized in that: The first oil push rod is provided with a row of meshing teeth, and the first transmission assembly includes a first sector gear located at the lower side of the first oil push rod, the lower part of the first sector gear is connected to the gun cover through a first pin shaft, and the upper part of the first sector gear is connected to the crank handle through a latch; when the first transmission assembly is in a locked state, the latch is locked with the first sector gear, and the first sector gear can be driven to rotate by turning the crank handle, and the first sector gear drives the first oil push rod to slide along the first oil rod cavity by meshing with the meshing teeth; when the first transmission assembly is in an unlocked state, the latch is unlocked from the first sector gear, and the first sector gear is not driven to rotate by turning the crank handle.

4. A grease gun with double oil push rods according to claim 3, characterized in that: The latch slides through the crank handle, the gun cover and the first sector gear, and the latch includes a thin section and a thick section; the first sector gear is provided with an arc hole, and the arc hole is provided with a positioning hole that matches the thick section of the latch; when the thick section of the latch is located in the positioning hole, the latch is locked with the first sector gear; when the thin section of the latch is located in the arc hole, the latch is unlocked from the first sector gear, and when the crank handle is turned, the thin section of the latch slides along the arc hole.

5. A grease gun with double oil push rods according to claim 4, characterized in that: A clamping portion is provided at one end of the thick section of the latch, a spring is provided between one end of the thin section and the crank, and a first clamping groove and a second clamping groove are provided on the crank to match the clamping portion; when the clamping portion is located in the first clamping groove, the thick section of the latch is disengaged from the positioning hole and the thin section is located in the arc hole, the spring is compressed, and the latch is unlocked from the first sector gear; when the clamping portion is located in the second clamping groove and the thick section of the latch is located in the positioning hole, the spring is reset and the latch is locked with the first sector gear.

6. A grease gun with double oil push rods according to claim 5, characterized in that: A boss is provided at the end of the thin section of the latch, a gasket sleeved on the latch is provided on one side of the crank handle close to the boss, and the spring is located between the boss and the gasket.

7. A grease gun with double oil push rods according to claim 4, characterized in that: A clamping portion is provided at one end of the thin section of the latch, a spring is provided between one end of the thick section and the crank, and a first clamping groove and a second clamping groove matching with the clamping portion are provided on the crank; when the clamping portion is located in the first clamping groove and the thick section of the latch is located in the positioning hole, the spring is compressed, and the latch is locked with the first sector gear; when the clamping portion is located in the second clamping groove, under the action of the spring, the thick section of the latch is disengaged from the positioning hole and the thin section is located in the arc hole, and the latch is unlocked from the first sector gear.

8. A grease gun with double oil push rods according to claim 5 or 7, characterized in that: The first card slot and the second card slot are arranged perpendicular to each other.

9. A grease gun with double oil push rods according to claim 5 or 7, characterized in that: The clamping portion is a pull ring.

10. A grease gun with double oil push rods according to claim 2, characterized in that: The second oil push rod is provided with a row of meshing teeth, and the second transmission assembly includes a second sector gear located on the upper side of the second oil push rod, the upper end of the second sector gear, the upper end of the crank handle and the gun cover are hinged by a second pin shaft; the lower side of the second sector gear is fixedly connected to the crank handle by a third pin shaft.

Images