Large-displacement handheld electric grease adding gun and lubricating pump

Abstract

The invention relates to a large-displacement handheld electric greasing gun and a lubricating pump. The technical problems that a traditional handheld greasing gun is slow in lubricating grease filling and low in lubricating efficiency are solved. Comprising a battery, a grease storage barrel, a driving module, a grease pumping module and a converging block, the driving module comprises a gear motor and a transmission mechanism, the transmission mechanism comprises a worm and gear mechanism and at least two sets of slider-crank mechanisms, each slider-crank mechanism comprises a rotating pair, a connecting rod and a slider, and the rotating pair comprises a rotating crankshaft vertically arranged on the side face of a worm gear; one end of the connecting rod is rotationally assembled on the rotating crankshaft through a sleeve, and the other end is hinged with the slider; the grease pumping module comprises plunger pairs arranged in one-to-one correspondence with the slider-crank mechanisms, each plunger pair comprises a valve body, a plunger valve element and a one-way valve, the one-way valves are arranged at the outlet end of a valve cavity, the sliding blocks are fixedly connected with the plunger valve elements, and the converging block is provided with a main oil duct communicated with the grease injection gun head and branch oil ducts connected with the one-way valves in a one-to-one correspondence mode. And each branch oil duct is communicated with the main oil duct.

Description

Technical Field

[0001] The invention relates to a large-displacement handheld electric grease gun and a lubrication pump. Background Art

[0002] In the field of engineering machinery, a centralized lubrication system is generally used to lubricate each friction pair. Taking an excavator as an example, an excavator is generally equipped with a centralized lubrication system. The system mainly includes a lubrication pump, multiple distributors, pipelines and joint accessories. The grease is pressurized and pumped to each distributor through the lubrication pump. After quantitative distribution, each distributor supplies the distributed grease to each friction pair through pipelines.

[0003] However, in actual use, the working part of the excavator - the bucket is in direct contact with the material, and the lubrication pipelines and distributors arranged in its connecting rods, rocker arms, etc. are often easily damaged by the collision and impact of the material, affecting the overall operation of the lubrication system; but the lubrication pipelines and distributors installed at the friction pairs in other parts are not easy to be damaged.

[0004] Therefore, users want to use manual lubrication for parts that are easily damaged by impact, such as connecting rods and rockers, while the rest of the equipment continues to use centralized lubrication. However, the current handheld grease gun is too slow to add grease to the friction pair, and the lubrication efficiency is low, which delays the valuable working time of the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a large-displacement handheld electric grease gun to solve the technical problems of slow grease filling and low lubrication efficiency of traditional handheld grease guns; the purpose of the present invention is also to provide a lubrication pump equipped with the above-mentioned large-displacement handheld electric grease gun.

[0006] The technical solution of the large-displacement handheld electric grease gun of the present invention is as follows: The large-displacement handheld electric grease gun comprises: The housing comprises a hand-held handle and a grease injection gun head; Battery; Fat storage cylinder; The driving module includes a reduction motor and a transmission mechanism, the transmission mechanism includes a worm gear mechanism and at least two sets of crank slider mechanisms, the crank slider mechanism includes a rotating pair, a connecting rod and a slider, the rotating pair includes a rotating crankshaft vertically arranged on the side of the turbine, one end of the connecting rod is rotatably assembled on the rotating crankshaft through a sleeve, and the other end is hinged to the slider; The grease pump module comprises a plunger pair arranged in one-to-one correspondence with the crank slider mechanism, the plunger pair comprises a valve body, a plunger valve core and a one-way valve, the valve body has a valve cavity, the plunger sliding seal is assembled in the valve cavity, the one-way valve is arranged at the outlet end of the valve cavity, and the slider is fixedly connected to the plunger valve core; The manifold block comprises a main oil passage connected with a grease injection gun head and branch oil passages connected with each one-way valve in a one-to-one correspondence, and each branch oil passage is connected with the main oil passage.

[0007] Beneficial effects of this solution: When the large-displacement handheld electric grease gun of this application is working, its reduction motor drives the worm gear mechanism to move, and the turbine can drive at least two sets of crank slider mechanisms at the same time, each set of crank slider mechanisms drives a set of plunger pairs to suck and pump grease, and under the premise of the one-way valve to prevent backflow, the grease of each plunger pair is concentrated and discharged from the grease gun head after converging through the confluence block. It can be seen that since each plunger pair is in alternating action, it is ensured that the grease gun head is continuously discharged, and the confluence of each plunger pair, compared with the traditional structure, its displacement is greatly improved, which can meet the needs of rapid grease filling of the working parts of engineering machinery. It has the advantages of compact structure, large displacement and high grease injection efficiency.

[0008] Furthermore, the reduction motor is a speed-regulating motor, and the speed of the reduction motor can be adjusted by a switch to control the grease output speed of the grease pump module. The reduction motor of the driving module is set as a speed-regulating motor, such as a variable frequency motor, and the speed of the turbine is changed by adjusting the speed of the motor, thereby changing the suction grease pump speed of the plunger pair, so that the displacement of the grease gun can be flexibly adjusted. When fast grease injection is required, a high speed and a large displacement are used, and when there is no fast grease injection requirement, a low speed and a small displacement are used, so as to minimize the wear speed of the grease gun and increase the life of the grease gun.

[0009] Furthermore, the connection points of each rotating crankshaft and the turbine are located on the same circle of the turbine, the structural dimensions of each crank slider mechanism are the same, and the structural dimensions of each plunger pair are the same. The purpose of this arrangement is to make the crank slider mechanism and the plunger pair into a standard module, reducing the manufacturing and assembly costs.

[0010] Furthermore, the end of each rotating crankshaft away from the turbine is rotatably matched with the mounting sleeve arranged on the housing. Such a setting ensures that both ends of the rotating crankshaft have support points, avoiding cantilevering at one end, thereby improving the matching accuracy of the components and increasing the service life of the components.

[0011] Furthermore, the crank slider mechanism and the plunger pair are respectively provided with two sets, the two rotating crankshafts are coaxially arranged, and the two mounting sleeves are coaxially arranged. This arrangement is more compact in structure and more convenient in processing and assembly.

[0012] Furthermore, there are at least three sets of crank slider mechanisms and plunger pairs respectively, and the rotating crankshafts are evenly distributed along the circumference of the turbine.

[0013] Furthermore, the grease injection gun head is a multi-section telescopic tube structure, ensuring that the grease injection gun head can be telescopically extended to lubrication points in different areas, avoiding the situation where lubrication points in some narrow areas cannot be reached.

[0014] Furthermore, an oil pressure sensor is connected to the main oil channel. The provision of the oil pressure sensor ensures the system safety during grease injection and can protect the safety of the grease gun and the lubrication point when there is a blockage at the lubrication point.

[0015] The technical solution of the lubrication pump of the present invention is as follows: The lubrication pump comprises: Pump head assembly; tank; It also includes a large-displacement handheld electric grease gun that can be detachably connected to the outside of the fuel tank. The large-displacement handheld electric grease gun includes: The housing comprises a hand-held handle and a grease injection gun head; Battery; Fat storage cylinder; The driving module includes a reduction motor and a transmission mechanism, the transmission mechanism includes a worm gear mechanism and at least two sets of crank slider mechanisms, the crank slider mechanism includes a rotating pair, a connecting rod and a slider, the rotating pair includes a rotating crankshaft vertically arranged on the side of the turbine, one end of the connecting rod is rotatably assembled on the rotating crankshaft through a sleeve, and the other end is hinged to the slider; The grease pump module comprises a plunger pair arranged in one-to-one correspondence with the crank slider mechanism, the plunger pair comprises a valve body, a plunger valve core and a one-way valve, the valve body has a valve cavity, the plunger sliding seal is assembled in the valve cavity, the one-way valve is arranged at the outlet end of the valve cavity, and the slider is fixedly connected to the plunger valve core; The manifold block comprises a main oil passage connected with a grease injection gun head and branch oil passages connected with each one-way valve in a one-to-one correspondence, and each branch oil passage is connected with the main oil passage.

[0016] Beneficial effects of this solution: When the large-displacement handheld electric grease gun of this application is working, its reduction motor drives the worm gear mechanism to move, and the turbine can drive at least two sets of crank slider mechanisms at the same time, each set of crank slider mechanisms drives a set of plunger pairs to suck and pump grease, and under the premise of the one-way valve to prevent backflow, the grease of each plunger pair is concentrated and discharged from the grease gun head after converging through the confluence block. It can be seen that since each plunger pair is in alternating action, it is ensured that the grease gun head is continuously discharged, and the confluence of each plunger pair, compared with the traditional structure, its displacement is greatly improved, which can meet the needs of rapid grease filling of the working parts of engineering machinery. It has the advantages of compact structure, large displacement and high grease injection efficiency.

[0017] Furthermore, the reduction motor is a speed-regulating motor, and the speed of the reduction motor can be adjusted by a switch to control the grease output speed of the grease pump module. The reduction motor of the driving module is set as a speed-regulating motor, such as a variable frequency motor, and the speed of the turbine is changed by adjusting the speed of the motor, thereby changing the suction grease pump speed of the plunger pair, so that the displacement of the grease gun can be flexibly adjusted. When fast grease injection is required, a high speed and a large displacement are used, and when there is no fast grease injection requirement, a low speed and a small displacement are used, so as to minimize the wear speed of the grease gun and increase the life of the grease gun.

[0018] Furthermore, the connection points of each rotating crankshaft and the turbine are located on the same circle of the turbine, the structural dimensions of each crank slider mechanism are the same, and the structural dimensions of each plunger pair are the same. The purpose of this arrangement is to make the crank slider mechanism and the plunger pair into a standard module, reducing the manufacturing and assembly costs.

[0019] Furthermore, the end of each rotating crankshaft away from the turbine is rotatably matched with the mounting sleeve arranged on the housing. Such a setting ensures that both ends of the rotating crankshaft have support points, avoiding cantilevering at one end, thereby improving the matching accuracy of the components and increasing the service life of the components.

[0020] Furthermore, the crank slider mechanism and the plunger pair are respectively provided with two sets, the two rotating crankshafts are coaxially arranged, and the two mounting sleeves are coaxially arranged. This arrangement is more compact in structure and more convenient in processing and assembly.

[0021] Furthermore, there are at least three sets of crank slider mechanisms and plunger pairs respectively, and the rotating crankshafts are evenly distributed along the circumference of the turbine.

[0022] Furthermore, the grease injection gun head is a multi-section telescopic tube structure, ensuring that the grease injection gun head can be telescopically extended to lubrication points in different areas, avoiding the situation where lubrication points in some narrow areas cannot be reached.

[0023] Furthermore, an oil pressure sensor is connected to the main oil channel. The provision of the oil pressure sensor ensures the system safety during grease injection and can protect the safety of the grease gun and the lubrication point when there is a blockage at the lubrication point.

[0024] Furthermore, a positioning locking assembly for placing, positioning and fixing the large-displacement handheld electric grease gun is provided on the oil tank.

[0025] Furthermore, the positioning and locking assembly includes a metal hook for positioning and hanging the handheld electric grease gun and a clamp assembly for fixing the handheld electric grease gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the appearance structure of a specific embodiment of a large-displacement handheld electric grease gun of the present invention; Figure 2for Figure 1 Schematic diagram of working principle; Figure 3 for Figure 1 Schematic diagram of the working principle of the transmission mechanism and the grease pump module; Figure 4 It is a structural schematic diagram of the lubrication pump of the present invention; In the figure: 1-lubrication pump, 11-pump head assembly, 12-oil tank, 121-metal hook, 2-large displacement handheld electric grease gun, 21-battery, 22-grease storage cylinder, 23-drive module, 231-reduction motor, 232-turbine, 233-worm, 234-rotating crankshaft, 235-mounting sleeve, 236-connecting rod, 237-slider, 24-grease pump module, 241-valve body, 242-plunger valve core, 243-check valve, 25-manifold, 251-main oil channel, 252-branch oil channel, 26-oil pressure sensor, 27-grease gun head, 28-switch. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0031] A specific embodiment of a large-displacement handheld electric grease gun of the present invention: Figure 1-3 As shown, the large-displacement handheld electric grease gun 2 includes a housing, a battery 21 , a grease storage cylinder 22 , a drive module 23 , a grease pump module 24 , and a manifold block 25 .

[0032] Among them, Figure 1 As shown, the housing includes a hand-held handle and a grease gun head 27, and the grease gun head 27 is a multi-section telescopic tube structure. Ensure that the grease gun head 27 can be telescopically extended to lubrication points in different areas to avoid the situation where lubrication points in some narrow areas cannot be reached. The battery 21 is a rechargeable battery 21, which is detachably connected to the housing. The grease storage cylinder 22 is used to store grease, and is detachably connected to the housing. The grease storage cylinder 22 has a grease inlet and outlet.

[0033] like Figure 2-3 As shown, the driving module 23 includes a reduction motor 231 and a transmission mechanism, wherein the reduction motor 231 is a speed regulating motor, and the speed of the reduction motor 231 can be adjusted by the switch 28 to control the grease output speed of the grease pump module 24. The reduction motor 231 of the driving module 23 is set as a speed regulating motor, such as a variable frequency motor, and the speed of the turbine 232 is changed by adjusting the speed of the motor, thereby changing the suction pump grease speed of the plunger pair, so that the displacement of the grease gun can be flexibly adjusted, and a high speed and large displacement are used when fast grease injection is required, and a low speed and small displacement are used when there is no fast grease injection requirement, so as to minimize the wear speed of the grease gun and improve the life of the grease gun. The transmission mechanism includes a worm gear 233 mechanism and at least two sets of crank slider mechanisms, and the crank slider mechanism includes a rotating pair, a connecting rod 236 and a slider 237, and the rotating pair includes a rotating crankshaft 234 vertically arranged on the side of the turbine 232, one end of the connecting rod 236 is rotatably assembled on the rotating crankshaft 234 through a sleeve, and the other end is hinged to the slider 237. The grease pump module 24 includes a plunger pair corresponding to the crank slider mechanism, and the plunger pair includes a valve body 241, a plunger valve core 242 and a one-way valve 243. The valve body 241 has a valve cavity, and the plunger sliding seal is assembled in the valve cavity. The one-way valve 243 is arranged at the outlet end of the valve cavity, and the slider 237 is fixedly connected to the plunger valve core 242. The manifold block 25 has a main oil channel connected to the grease gun head 27 and a branch oil channel connected to each one-way valve 243 in a one-to-one correspondence, and each branch oil channel is connected to the main oil channel. The main oil channel 251 is connected to an oil pressure sensor 26. The setting of the oil pressure sensor 26 ensures the system safety during grease injection, and can protect the safety of the grease gun and the lubrication point when there is a blockage at the lubrication point.

[0034] In this embodiment, the slider crank mechanism and the plunger pair have two sets respectively, the two rotating crankshafts 234 are coaxially arranged, and the two mounting sleeves 235 are coaxially arranged. This arrangement has a more compact structure and is more convenient for processing and assembly. In other embodiments, the connection points of each rotating crankshaft 234 and the turbine 232 are located on the same circle of the turbine 232, the structural dimensions of each slider crank mechanism are the same, and the structural dimensions of each plunger pair are the same. The purpose of such an arrangement is to make the slider crank mechanism and the plunger pair both standard modules, reducing the manufacturing and assembly costs. One end of each rotating crankshaft 234 away from the turbine 232 is rotatably matched with the mounting sleeve 235 arranged on the housing. Such an arrangement ensures that both ends of the rotating crankshaft 234 have support points, avoiding cantilevering at one end, thereby improving the matching accuracy of the components and improving the service life of the components. In other embodiments, the slider crank mechanism and the plunger pair have at least three sets respectively, and each rotating crankshaft 234 is evenly distributed along the circumference of the turbine 232.

[0035] When the large-displacement handheld electric grease gun 2 of the present application is working, its reduction motor 231 drives the worm gear 233 mechanism to move, and the turbine 232 can drive at least two sets of crank slider mechanisms at the same time, each set of crank slider mechanisms drives a set of plunger pairs to suck and pump grease, and under the premise of the anti-backflow of the one-way valve 243, the grease of each plunger pair is concentrated and discharged from the grease gun head 27 after converging through the confluence block 25. It can be seen that since each plunger pair is in alternating action, it is ensured that the grease gun head 27 is continuously discharged, and the confluence of each plunger pair, compared with the traditional structure, its displacement is greatly improved, which can meet the needs of rapid grease filling of the working parts of the engineering machinery. It has the advantages of compact structure, large displacement and high grease injection efficiency.

[0036] The specific embodiment of the lubrication pump of the present invention mainly comprises a pump head assembly 11, an oil tank 12 and a large-displacement handheld electric grease gun 2, and the oil tank 12 is provided with a positioning locking assembly for placing and positioning the large-displacement handheld electric grease gun 2. The positioning locking assembly comprises a metal hook 121 for positioning and hanging the handheld electric grease gun and a clamp assembly for fixing the handheld electric grease gun. The structure of the large-displacement handheld electric grease gun 2 is the same as that of the above-mentioned large-displacement handheld electric grease gun 2 in each embodiment, and will not be repeated.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. Large displacement handheld electric grease gun, characterized by: include: The housing comprises a hand-held handle and a grease injection gun head; Battery; Fat storage cylinder; The driving module includes a reduction motor and a transmission mechanism, the transmission mechanism includes a worm gear mechanism and at least two sets of crank slider mechanisms, the crank slider mechanism includes a rotating pair, a connecting rod and a slider, the rotating pair includes a rotating crankshaft vertically arranged on the side of the turbine, one end of the connecting rod is rotatably assembled on the rotating crankshaft through a sleeve, and the other end is hinged to the slider; The grease pump module comprises a plunger pair arranged in one-to-one correspondence with the crank slider mechanism, the plunger pair comprises a valve body, a plunger valve core and a one-way valve, the valve body has a valve cavity, the plunger sliding seal is assembled in the valve cavity, the one-way valve is arranged at the outlet end of the valve cavity, and the slider is fixedly connected to the plunger valve core; The manifold block comprises a main oil passage connected with a grease injection gun head and branch oil passages connected with each one-way valve in a one-to-one correspondence, and each branch oil passage is connected with the main oil passage.

2. The large-displacement handheld electric grease gun according to claim 1 is characterized in that: The reduction motor is a speed-regulating motor, and the rotation speed of the reduction motor can be adjusted by a switch to control the fat output speed of the fat pump module.

3. The large-displacement handheld electric grease gun according to claim 1 is characterized in that: The connection points of each rotating crankshaft and the turbine are located on the same circle of the turbine, the structural dimensions of each crank slider mechanism are the same, and the structural dimensions of each plunger pair are the same.

4. The large-displacement handheld electric grease gun according to claim 3 is characterized in that: One end of each rotating crankshaft away from the turbine is rotationally matched with a mounting sleeve arranged on the shell.

5. The large-displacement handheld electric grease gun according to claim 4 is characterized in that: The crank slider mechanism and the plunger pair are respectively provided with two sets, the two rotating crankshafts are coaxially arranged, and the two mounting sleeves are coaxially arranged.

6. The large-displacement handheld electric grease gun according to claim 4, characterized in that: There are at least three sets of crank slider mechanisms and plunger pairs respectively, and each rotating crankshaft is evenly distributed along the circumference of the turbine.

7. The large-displacement handheld electric grease gun according to claim 1, characterized in that: The grease injection gun head is a multi-section telescopic tube structure.

8. The large-displacement handheld electric grease gun according to claim 1, characterized in that: The main oil channel is connected with an oil pressure sensor.

9. Lubrication pump, including: Pump head assembly; tank; It is characterized in that it also includes a large-displacement handheld electric grease gun detachably connected to the outside of the fuel tank, and the large-displacement handheld electric grease gun includes: The housing comprises a hand-held handle and a grease injection gun head; Battery; Fat storage cylinder; The driving module includes a reduction motor and a transmission mechanism, the transmission mechanism includes a worm gear mechanism and at least two sets of crank slider mechanisms, the crank slider mechanism includes a rotating pair, a connecting rod and a slider, the rotating pair includes a rotating crankshaft vertically arranged on the side of the turbine, one end of the connecting rod is rotatably assembled on the rotating crankshaft through a sleeve, and the other end is hinged to the slider; The grease pump module comprises a plunger pair arranged in one-to-one correspondence with the crank slider mechanism, the plunger pair comprises a valve body, a plunger valve core and a one-way valve, the valve body has a valve cavity, the plunger sliding seal is assembled in the valve cavity, the one-way valve is arranged at the outlet end of the valve cavity, and the slider is fixedly connected to the plunger valve core; The manifold block comprises a main oil passage connected with a grease injection gun head and branch oil passages connected with each one-way valve in a one-to-one correspondence, and each branch oil passage is connected with the main oil passage.

10. The lubrication pump according to claim 9, characterized in that: The reduction motor is a speed-regulating motor, and the rotation speed of the reduction motor can be adjusted by a switch to control the fat output speed of the fat pump module.

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