Small automatic oiling machine

Abstract

The utility model discloses a small-sized automatic oiling machine, which comprises an outer shell, the reduction gearbox structure is mounted on the outer shell; the protective shell is mounted above the reduction gearbox structure; the general assembly structure comprises a general assembly plate and a battery compartment, and the general assembly plate is arranged above the protective shell; the grease bag is mounted above the general assembly structure; the oil pumping assembly is mounted between the general assembly structure and the reduction gearbox structure and is in transmission connection with the reduction gearbox structure; the battery bin surrounds the periphery of the oil pumping assembly; the top of the oil pumping assembly extends to the final assembly structure and is connected with the grease bag, and the bottom of the oil pumping assembly penetrates through the reduction gearbox to be connected with the oil outlet bolt. The oil pumping assembly is used for pumping out grease in the grease bag through the oil outlet bolt; and the grease cup assembly is connected with the top of the outer shell and is used for extruding grease in the grease bag. The small automatic oiling machine is provided with a power supply, and is small in size, compact in structure and wide in application scene.

Description

Technical Field

[0001] The utility model relates to the technical field of oiling machines, in particular to a small automatic oiling machine. Background Art

[0002] As equipment production gradually moves towards intelligence, automation and unmanned operation, corresponding automatic oiling machines are needed to lubricate mechanical equipment that needs to operate for a long time or is difficult for humans to access. At present, most peripheral automatic oiling machines still rely on external power supply, and oiling machines with their own power supply have the problem of being large in size. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a small automatic oiling machine with its own power supply, small size, compact structure and wide application scenarios.

[0004] The small automatic oil filling machine according to the embodiment of the utility model comprises:

[0005] The outer shell has a first accommodating cavity, and a first supporting column is provided at the bottom of the first accommodating cavity; the top of the outer shell is open, and the bottom is provided with an oil outlet bolt penetrating the outer shell;

[0006] A reduction box structure, installed in the first accommodating cavity, the reduction box structure is connected to an output gear;

[0007] A protective shell is installed above the reduction box structure and connected to the reduction box structure;

[0008] An assembly structure, comprising an assembly plate and a battery compartment, wherein the assembly plate is disposed above the protective shell and connected to the protective shell, the battery compartment is used to install a power source, and the battery compartment extends downward to abut against the first support column;

[0009] A grease bag is installed above the general assembly structure and connected to the general assembly plate;

[0010] The oil pump assembly is installed between the general assembly structure and the reduction gear box structure and is connected to the output gear transmission; the battery compartment is arranged around the outer periphery of the oil pump assembly; the top of the oil pump assembly extends to the general assembly structure and is connected to the grease bag, and the bottom of the oil pump assembly passes through the reduction gear box to be connected to the oil outlet bolt; the oil pump assembly is used to pump out the grease in the grease bag through the oil outlet bolt;

[0011] A grease cup assembly is connected to the top of the outer shell and is arranged on the periphery of the grease bag; the grease cup assembly is used to squeeze out the grease in the grease bag.

[0012] The small automatic oil filling machine according to the embodiment of the utility model has at least the following beneficial effects:

[0013] By arranging a battery compartment in the general assembly structure, a power source can be installed in the battery compartment, so that the small automatic oil filling machine of this embodiment does not need to rely on external power supply for use; the battery compartment of the general assembly structure extends downward and is arranged around the outer periphery of the oil pump assembly, which can not only protect the oil pump assembly, but also make full use of the internal space of the outer shell; the oil pump assembly passes through the general assembly structure and the reduction gear box structure, and makes full use of the general assembly structure and the reduction gear box structure to limit the oil pump assembly, while not affecting the implementation of the oil pump assembly function, thereby facilitating the miniaturization of the automatic oil filling machine.

[0014] According to some embodiments of the utility model, the oil pump assembly includes an oil pump pipe, an intermediate gear and an oil pump screw, the oil pump pipe is clamped between the general assembly structure and the protective shell, and the intermediate gear is clamped between the protective shell and the reduction box structure; the top of the oil pump screw is slidably penetrated in the oil pump pipe, the intermediate gear is sleeved on the outer periphery of the oil pump screw, and is transmission-connected with the oil pump screw;

[0015] The intermediate gear rotates around its own axis to drive the oil pumping screw to slide relative to the oil pumping pipe; the top of the oil pumping pipe is connected to the grease bag, and the oil pumping screw passes through the reduction box structure to be connected to the oil outlet bolt.

[0016] According to some embodiments of the utility model, a first center hole is provided in the center of the general assembly plate, the grease bag is provided with an oil outlet pipe, the oil outlet pipe is passed through the first center hole and threadedly connected to the first center hole; the oil pump pipe is passed through the first center hole, the top of the oil pump pipe is inserted into the oil outlet pipe, the upper part of the oil pump pipe is sealedly connected to the oil outlet pipe, and the middle part of the oil pump pipe is sealedly connected to the first center hole.

[0017] According to some embodiments of the utility model, the protective shell has a second center hole, the reduction box structure has a third center hole, and the first center hole, the second center hole, and the third center hole are coaxially arranged;

[0018] The lower part of the oil pumping pipe is passed through the second center hole, and an oil collecting groove is provided on the outer periphery of the second center hole; an oil delivery pipe is installed in the third center hole, and the lower part of the oil pumping screw is passed through the oil delivery pipe, and the oil delivery pipe is used to limit the rotation of the oil pumping screw around its own axis.

[0019] According to some embodiments of the utility model, a battery box is installed in the battery compartment, and the battery box is detachably connected to the battery compartment; an elastic structure is installed at the bottom of the battery compartment, the elastic structure is against the battery box, and the first support column is against the elastic structure.

[0020] According to some embodiments of the utility model, the bottom of the battery compartment is provided with a bottom hole passing through the battery compartment, the side wall of the bottom hole is provided with a first limiting structure extending toward the center, the battery compartment is provided with a second limiting structure extending toward the center of the bottom hole, the elastic structure includes a circular plate and a conical spring, the circular plate is clamped between the first limiting structure and the second limiting structure, the first end of the conical spring is connected to the circular plate, and the second end of the conical spring is against the battery box; the first support column is against the bottom of the circular plate.

[0021] According to some embodiments of the utility model, the battery compartment is arc-shaped, and is provided with two bottom holes, which are spaced apart around the circumference, and the elastic structure is installed in the two bottom holes; the reduction gear box structure is provided with a second support column, and the first support column and the second support column are respectively against the circular plates of the two elastic structures.

[0022] According to some embodiments of the utility model, the grease cup assembly includes an oil filling cup, a stopper plate and a spring assembly, the oil filling cup has a second accommodating cavity for placing a grease bag, and the side wall of the second accommodating cavity is provided with a strip groove; there are a plurality of the strip grooves, and the plurality of the strip grooves are evenly spaced around the circumference;

[0023] The abutment plate is provided with a radially protruding bayonet, the bayonet is slidably installed in the strip groove, and a plurality of bayonet are provided corresponding to the strip groove; the abutment plate abuts against the top of the grease bag;

[0024] The spring group is installed in the second accommodating cavity, and two ends of the spring group are respectively against the bottom wall of the oil filling cup and the abutment plate.

[0025] According to some embodiments of the utility model, the oil filling cup is provided with a connecting strip and an embedded block, the embedded block is arranged at the head end of the connecting strip; the connecting strip is composed of a plurality of card blocks arranged at intervals, and the volumes of the plurality of card blocks increase in sequence along the direction from the head end to the tail end of the connecting strip; the embedded block is arranged at the head end of the connecting strip;

[0026] The outer shell is provided with a connecting groove and a clamping groove, the clamping groove is arranged at the end of the connecting groove, the connecting strip is installed in the connecting groove, and the embedding block is embedded in the clamping groove;

[0027] Wherein, the thickness of the embedding block is greater than or equal to the thickness of the clamping block, and the depth of the clamping groove is greater than or equal to the depth of the connecting groove.

[0028] According to some embodiments of the present invention, the heights of the plurality of blocks increase sequentially along the direction from the head end to the tail end of the connecting strip; and the width of the connecting groove increases sequentially along the length direction of the connecting groove.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0031] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of the assembly of an embodiment of the utility model;

[0033] Figure 3 for Figure 2 Assembly diagram of the middle grease package, general assembly structure, and pump oil pipe;

[0034] Figure 4 for Figure 2 Assembly diagram of the middle protective shell, oil pump assembly, and reduction gearbox structure;

[0035] Figure 5 It is a schematic diagram of the assembly structure and battery compartment of an embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the structure of the outer shell of an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the assembly of the grease cup assembly according to an embodiment of the utility model.

[0038] Figure Number:

[0039] The outer shell 1000, the first accommodating chamber 1100, the first supporting column 1110, the oil outlet bolt 1120, the through hole 1130, the reinforcing plate 1131, the first connecting column 1140, the mounting hole 1150, the square hole 1160, the mounting plate 1161, the stud 1162, the connecting groove 1200, the clamping groove 1210, the anvil ring 1230, the sealing groove 1240, and the control panel 1300;

[0040] The reduction box structure 2000, the output gear 2100, the third center hole 2200, the oil pipeline 2210, and the second support column 2300;

[0041] Protective shell 3000, second central hole 3100, oil collecting tank 3200;

[0042] Assembly structure 4000, assembly plate 4100, first center hole 4110, battery compartment 4200, bottom hole 4210, first limiting structure 4211, second limiting structure 4212, battery box 4300, elastic structure 4400, circular plate 4410, conical spring 4420;

[0043] Grease bag 5000, oil outlet pipe 5100;

[0044] Oil pump assembly 6000, oil pump pipe 6100, intermediate gear 6200, oil pump screw 6300;

[0045] Grease bag assembly 7000, oil filling cup 7100, connecting strip 7110, block 7111, embedded block 7120, straight plate area 7130, strip groove 7140, opening 7141, second accommodating cavity 7150, abutment plate 7200, latch 7210, protrusion 7220, working hole 7221, spring group 7300, first elastic member 7310, second elastic member 7320. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0050] Reference Figures 1 to 7A small automatic oiling machine according to an embodiment of the utility model comprises an outer shell 1000, a reduction gearbox structure 2000, a protective shell 3000, an assembly structure 4000, a grease bag 5000, an oil pump assembly 6000 and a grease cup assembly. The outer shell 1000 is provided with a first accommodating chamber 1100, and the reduction gearbox structure 2000, the protective shell 3000, the assembly structure 4000 and the oil pump assembly 6000 are installed in the first accommodating chamber 1100; the grease cup assembly comprises an oiling cup 7100, and the oiling cup 7100 has a second accommodating chamber 7150, and the grease bag 5000 is installed in the second accommodating chamber 7150; the grease bag 5000 assembly is installed above the outer shell 1000, and the top of the outer shell 1000 has an opening 7141, and the oiling cup 7100 is detachably connected to the outer shell 1000. Specifically, an oil outlet bolt 1120 penetrating the outer shell 1000 is provided at the bottom of the outer shell 1000, the oil outlet bolt 1120 is communicated with the first accommodating chamber 1100, and the bottom of the oil outlet bolt 1120 is used to connect the oil pipe for injecting oil into the equipment; the reduction gear box structure 2000 is connected to the output gear 2100, and the protective shell 3000 is installed above the reduction gear box structure 2000 and connected to the reduction gear box structure 2000; the general assembly structure 4000 includes a general assembly plate 4100 and a battery compartment 4200, the general assembly plate 4100 is arranged above the protective shell 3000 and connected to the protective shell 3000, the battery compartment 4200 is used to install the power supply, and the battery compartment 4200 extends downward to abut against the first support column 1110; the grease bag 5000 is installed above the general assembly structure 4000 and connected to the general assembly plate 4100 ; The oil pump assembly 6000 is installed between the general assembly structure 4000 and the reduction gear box structure 2000, and is connected to the output gear 2100 in transmission; the battery compartment 4200 is arranged around the outer periphery of the oil pump assembly 6000; the top of the oil pump assembly 6000 extends to the general assembly structure 4000 and is connected to the grease bag 5000, and the bottom of the oil pump assembly 6000 passes through the reduction gear box to be connected to the oil outlet bolt 1120; a power supply is installed in the battery compartment 4200, and the power supply in the battery compartment 4200 can supply power to the reduction gear box structure 2000, and the reduction gear box structure 2000 is used to drive the output gear 2100 to move, thereby driving the oil pump assembly 6000 to move, and the oil pump assembly 6000 is used to pump out the grease in the grease bag 5000 through the oil outlet bolt 1120; the grease cup assembly is used to squeeze out the grease in the grease bag 5000.

[0051] According to the small automatic oil filling machine of the embodiment of the utility model, by arranging a battery compartment 4200 in the general assembly structure 4000, a power source can be installed in the battery compartment 4200, so that the small automatic oil filling machine of this embodiment does not need to rely on external power supply for use; the battery compartment 4200 of the general assembly structure 4000 extends downward and is arranged around the outer periphery of the oil pump component 6000, which can not only protect the oil pump component 6000, but also make full use of the internal space of the outer shell 1000; the oil pump component 6000 passes through the general assembly structure 4000 and the reduction box structure 2000, and makes full use of the general assembly structure 4000 and the reduction box structure 2000 to limit the oil pump component 6000, while not affecting the implementation of the function of the oil pump component 6000, thereby facilitating the miniaturization of the small automatic oil filling machine.

[0052] In the embodiments of the present invention, referring to Figure 2 , Figure 6 As shown, the bottom of the first accommodating cavity 1100 is provided with a through hole 1130 penetrating the outer shell 1000, and the oil outlet bolt 1120 is penetrated through the through hole 1130; the outer periphery of the through hole 1130 is provided with a plurality of first connecting columns 1140, and the plurality of first connecting columns 1140 are arranged at intervals around the circumference of the through hole 1130; the top of the first connecting column 1140 is provided with a threaded hole, the first connecting column 1140 is integrally formed with the outer shell 1000, and the outer side wall of the first connecting column 1140 is also provided with a plurality of reinforcing ribs. In this embodiment, three first connecting columns 1140 are provided at the bottom of the first accommodating cavity 1100 of the outer shell 1000, and the reduction box structure 2000 is provided with three through holes corresponding to the first connecting columns 1140, and the fastener is preferably a bolt, which passes through the reduction box structure 2000 and is threadedly connected with the first connecting column 1140, thereby realizing the connection between the reduction box structure 2000 and the outer shell 1000.

[0053] Further, see Figure 2 As shown, the upper surface of the reduction box structure 2000 is provided with a plurality of second connecting columns extending upward, and the protective shell 3000 is connected to the second connecting columns by fasteners; the upper surface of the protective shell 3000 is provided with a plurality of third connecting columns, and the general assembly plate 4100 of the general assembly structure 4000 is connected to the third connecting columns by fasteners. Preferably, the diameters of the first connecting column 1140, the second connecting column, and the third connecting column are successively reduced, and the corresponding bolts corresponding to the first connecting column 1140, the second connecting column, and the third connecting column also have size differences. The outer shell 1000, the reduction box structure 2000, the protective shell 3000, and the general assembly structure 4000 are all connected by fasteners, which is mature and reliable, can effectively reduce production costs, and can be disassembled and assembled without the aid of more tools, thereby reducing maintenance costs.

[0054] In an embodiment of the utility model, the oil pump assembly 6000 includes an oil pump pipe 6100, an intermediate gear 6200 and an oil pump screw 6300; the oil pump pipe 6100 is clamped between the general assembly structure 4000 and the protective shell 3000, and the intermediate gear 6200 is clamped between the protective shell 3000 and the reduction box structure 2000; the top of the oil pump screw 6300 is slidably arranged in the oil pump pipe 6100, and the intermediate gear 6200 is sleeved on the outer periphery of the oil pump screw 6300 and is transmission-connected to the oil pump screw 6300; the rotation of the intermediate gear 6200 around its own axis can drive the oil pump screw 6300 to slide relative to the oil pump pipe 6100; the top of the oil pump pipe 6100 is connected to the grease bag 5000, and the oil pump screw 6300 passes through the reduction box structure 2000 to be connected to the oil outlet bolt 1120. For details, refer to Figure 2 , Figure 4 As shown, the center of the assembly plate 4100 is provided with a first center hole 4110, the grease bag 5000 is provided with an oil outlet pipe 5100, the oil outlet pipe 5100 is arranged below the grease bag 5000, the oil outlet pipe 5100 is passed through the first center hole 4110, and is threadedly connected to the first center hole 4110; the oil pump pipe 6100 is passed through the first center hole 4110, the top of the oil pump pipe 6100 is inserted into the oil outlet pipe 5100, the upper part of the oil pump pipe 6100 is sealed and connected to the oil outlet pipe 5100, and the middle part of the oil pump pipe 6100 is sealed and connected to the first center hole 4110. Figure 4 As shown, a sealing ring is installed on the outer wall of the upper part of the oil pump pipe 6100, and a sealing ring is also installed on the outer wall of the middle part of the oil pump pipe 6100.

[0055] In an embodiment of the utility model, the protective shell 3000 has a second center hole 3100, the reduction gearbox structure 2000 is provided with a third center hole 2200, and the first center hole 4110, the second center hole 3100, and the third center hole 2200 are coaxially arranged to facilitate the installation of the oil pump assembly 6000; the oil pump assembly 6000 plays the role of pumping out the oil in the grease bag 5000 through the oil outlet bolt 1120 in the small automatic oil filling machine of this embodiment. By reasonably arranging the reduction gearbox structure 2000 and the battery compartment 4200, the top and bottom of the oil pump assembly 6000 are equivalent to being directly connected to the grease bag 5000 and the oil outlet bolt 1120, thereby greatly reducing the height of the small automatic oil filling machine, and then reducing the volume of the small automatic oil filling machine.

[0056] In an embodiment of the utility model, the lower portion of the oil pump pipe 6100 is passed through the second center hole 3100, and an oil collecting groove 3200 is provided on the outer periphery of the second center hole 3100; the oil collecting groove 3200 is used to receive the oil leaked from between the inner wall of the oil outlet pipe 5100 and the outer wall of the oil pump pipe 6100. Because after the small automatic oiling machine has been running for a long time, there may be a problem of poor sealing effect, so grease may leak from between the inner wall of the oil outlet pipe 5100 and the outer wall of the oil pump pipe 6100. By setting up the oil collecting groove 3200 to collect the leaked grease, it can effectively prevent the grease from flowing to other structures and causing pollution or damage to other structures.

[0057] In the embodiment of the present utility model, the third central hole 2200 is installed with an oil delivery pipe 2210, and the lower part of the oil pumping screw 6300 is passed through the oil delivery pipe 2210. The oil delivery pipe 2210 is used to limit the rotation of the oil pumping screw 6300 around its own axis. Figure 2 As shown, the bottom of the oil pipe 2210 is connected to the oil outlet bolt 1120, and the lower part of the oil pumping screw 6300 is passed through the oil pipe 2210; since the hole passing through the oil pipe 2210 is not circular, and the oil pumping screw 6300 is also provided with a radially protruding matching structure that is the same as the hole passing through the oil pipe 2210, the oil pipe 2210 can limit the oil pumping screw 6300 from rotating around its own axis and can only slide along its own axis.

[0058] In an embodiment of the present utility model, a battery box 4300 is installed in the battery compartment 4200, and the battery box 4300 is detachably connected to the battery compartment 4200. Specifically, the battery compartment 4200 and the battery box 4300 in this embodiment are connected by means of an elastic sheet, but the connection method between the battery compartment 4200 and the battery box 4300 is not specifically limited in this application, and the specific detachable connection method can be selected according to actual conditions. The battery box 4300 is used to install batteries, and the batteries in the battery box 4300 can be replaced individually, or the battery box 4300 can be replaced as a whole.

[0059] In the embodiments of the present invention, referring to Figure 2 , Figure 5 As shown, the battery compartment 4200 is arc-shaped, so the battery box 4300 is also arc-shaped, and the arc angle of the battery compartment 4200 is 120 degrees to 180 degrees. Designing the battery compartment 4200 to be arc-shaped can better adapt to the shape of the outer shell 1000, thereby making fuller use of the internal space of the first accommodating cavity 1100.

[0060] In the embodiment of the present invention, an elastic structure 4400 is installed at the bottom of the battery compartment 4200, the elastic structure 4400 is against the battery box 4300, and the first support column 1110 is against the elastic structure 4400. Figure 5 As shown, an elastic structure 4400 is installed at the bottom of the battery compartment 4200, and the elastic structure 4400 is against the battery box 4300. The elastic structure 4400 is used to apply force to the battery box 4300 to make it separate from the battery compartment 4200, so that when the battery box 4300 is replaced, after the battery box 4300 is separated from the battery compartment 4200, the battery box 4300 can pop out a certain distance under the action of the elastic structure 4400 to facilitate the removal of the battery box 4300.

[0061] Reference Figure 5 As shown, in the embodiment of the utility model, the bottom of the battery compartment 4200 is provided with a bottom hole 4210 penetrating the battery compartment 4200, the side wall of the bottom hole 4210 is provided with a first limiting structure 4211 extending toward the center, the battery compartment 4200 is provided with a second limiting structure 4212 extending toward the center direction of the bottom hole 4210, and the elastic structure 4400 includes a circular plate 4410, and the circular plate 4410 is clamped between the first limiting structure 4211 and the second limiting structure 4212. The elastic structure 4400 also includes a conical spring 4420, and the conical spring 4420 includes a large head end and a small head end, and the large head end is connected to the circular plate 4410; the two ends of the conical spring 4420 are respectively against the circular plate 4410 and the battery box 4300. The elastic structure 4400 is arranged in the bottom hole 4210, so that the elastic structure 4400 can exert a force on the battery box 4300, and the battery compartment 4200 can also communicate with the first accommodating cavity 1100 through the bottom hole 4210, thereby reducing the risk of water vapor generated in the battery compartment 4200, and also facilitating heat dissipation in the battery compartment 4200, reducing the damage of high temperature to the battery life. The circular plate 4410 and the conical spring 4420 can be connected by welding or using a plug rod.

[0062] Further, in the embodiments of the present invention, referring to Figure 4 As shown, the first limiting structure 4211 is basically identical to the second limiting structure 4212, and the first limiting structure 4211 and the second limiting structure 4212 are spaced apart in the vertical direction; the first limiting structure 4211 is composed of three spaced apart first limiting blocks, and the three first limiting blocks are evenly spaced around the circumference, and the second limiting structure 4212 is composed of three spaced apart second limiting blocks, and the three second limiting blocks are evenly spaced around the circumference; the three first limiting blocks and the three second limiting blocks are staggered, so as to facilitate the installation of the circular plate 4410.

[0063] In the embodiment of the present invention, the diameter of the circular plate 4410 is substantially consistent with the inner diameter of the bottom hole 4210 , and the inner circle size of the first limiting structure 4211 and the inner circle size of the second limiting structure 4212 are both smaller than the diameter of the circular plate 4410 .

[0064] In the embodiments of the present invention, referring to Figure 5As shown, the battery compartment 4200 is provided with two bottom holes 4210, the two bottom holes 4210 are arranged at intervals around the circumference, and elastic structures 4400 are installed in the two bottom holes 4210; Figure 6 As shown, the bottom of the first accommodating cavity 1100 is provided with a first supporting column 1110, referring to Figure 4 As shown, the reduction box structure 2000 is provided with a second support column 2300, and the first support column 1110 and the second support column 2300 are respectively against the circular plates 4410 of the two elastic structures 4400. Specifically, the structures of the first support column 1110 and the second support column 2300 are basically the same, and the sizes are also basically the same. The diameters of the first support column 1110 and the second support column 2300 are basically the same as the inner circle size of the second limiting structure 4212. The first support column 1110 is arranged on the outer shell 1000, and the second support column 2300 is arranged on the reduction box structure 2000, in order to better arrange the positions of the first support column 1110 structure and the second support column 2300 structure. If the second support column 2300 is also arranged to be connected to the outer shell 1000, the second support column 2300 will interfere with a first connecting column 1140 in the first accommodating cavity 1100, so the second support column 2300 is arranged on the reduction box structure 2000. The provision of the first support column 1110 and the second support column 2300 can also support the circular plate 4410, thereby reducing the risk of deformation of the circular plate 4410; at the same time, since the battery box 4300 itself also has a certain weight, the provision of the first support column 1110 and the second support column 2300 can also indirectly support the battery box 4300, thereby preventing the final assembly structure 4000 from being deformed and damaged under long-term uneven stress.

[0065] In an embodiment of the utility model, the grease cup assembly includes an oil filling cup 7100, a back plate 7200 and a spring group 7300. The oil filling cup 7100 has a second accommodating chamber 7150 for placing the grease bag 5000. The side wall of the second accommodating chamber 7150 is provided with a strip groove 7140; there are multiple strip grooves 7140, and the multiple strip grooves 7140 are evenly spaced around the circumference; the back plate 7200 is provided with a radially protruding bayonet 7210, the bayonet 7210 is slidably installed in the strip groove 7140, and there are multiple bayonet 7210 corresponding to the strip groove 7140; the back plate 7200 is against the top of the grease bag 5000; the spring group 7300 is installed in the second accommodating chamber 7150, and the two ends of the spring group 7300 are respectively against the bottom wall of the oil filling cup 7100 and the back plate 7200, so as to apply a downward force to the back plate 7200 to squeeze out the grease in the grease bag 5000.

[0066] In the embodiments of the present invention, referring to Figure 7As shown, the side wall of the second accommodating cavity 7150 is provided with a strip groove 7140; there are multiple strip grooves 7140, and the multiple strip grooves 7140 are evenly spaced around the circumference; the abutment plate 7200 is provided with a radially protruding latch 7210, and the latch 7210 is slidably installed in the strip groove 7140; there are multiple latches 7210 corresponding to the strip groove 7140. Specifically, the provision of multiple strip grooves 7140 and latches 7210 can ensure that the abutment plate 7200 can always slide stably along the length extension direction of the oil filling cup 7100, and the abutment plate 7200 is not easy to deflect; the number of strip grooves 7140 is preferably three or more, and the specific number can be determined according to the size of the oil filling cup 7100. As the diameter of the oil filling cup 7100 increases, the number of strip grooves 7140 can be increased accordingly. The size of the strip groove 7140 matches the size of the bayonet 7210, the groove wall of the strip groove 7140 extends toward the center direction of the second accommodating cavity 7150, and the bayonet 7210 is arranged on the outer peripheral wall of the abutment plate 7200 and extends in the radial direction of the abutment plate 7200. By arranging the strip groove 7140 on the side wall of the oil filling cup 7100, arranging the bayonet 7210 protruding radially on the abutment plate 7200 to be slidably installed in the strip groove 7140, and then arranging the spring assembly 7300 to abut against the oil filling cup 7100 and the abutment plate 7200 respectively, the structure is simple and the manufacturing cost is low; by limiting the bayonet 7210 through the strip groove 7140, the abutment plate 7200 can be prevented from being separated from the oil filling cup 7100, thereby ensuring the stability of the grease cup assembly.

[0067] In the embodiments of the present invention, referring to Figure 1 , Figure 2 , Figure 7 As shown, the side wall of the second accommodating cavity 7150 is provided with a straight plate area 7130, and the strip groove 7140 is provided in the straight plate area 7130. Specifically, the oil filling cup 7100 is cylindrical, so the side wall of the oil filling cup 7100 is a curved surface, and the surface of the straight plate area 7130 is a plane. By providing the straight plate area 7130 on the side wall of the oil filling cup 7100, and then providing the strip groove 7140 in the straight plate area 7130, the difficulty of providing the strip groove 7140 can be effectively reduced, and the consistency of multiple strip grooves 7140 can be improved. In addition, since the surface of the straight plate area 7130 is a plane, its outer surface is equivalent to being recessed compared to the curved surfaces on both sides. Therefore, during transportation or installation, the straight plate area 7130 is less likely to be collided, thereby reducing the risk of deformation of the straight plate area 7130, and ensuring that the abutment plate 7200 can slide smoothly along the strip groove 7140.

[0068] In one embodiment of the grease cup assembly of the utility model, the side wall of the strip groove 7140 is not provided with an opening 7141. Specifically, the abutment plate 7200 is a circular plate, and the latch 7210 extends outwardly along the radial direction of the abutment plate 7200. As can be seen from the above, the groove wall of the strip groove 7140 extends toward the center of the second accommodating cavity 7150, so the circular area of ​​the abutment plate 7200 is smaller than the inner diameter of the oil filling cup 7100. Therefore, even if the side wall of the strip groove 7140 is not provided with an opening 7141, the abutment plate 7200 can be installed in the strip groove 7140. During installation, it is only necessary to tilt the support plate 7200 into the second accommodating cavity 7150 first, and then the latch 7210 can be aligned with the strip groove 7140 and inserted into the strip groove 7140. In this installation method, since the side wall of the strip groove 7140 is not provided with an opening 7141, it is difficult for the support plate 7200 to detach from the strip groove 7140, that is, the connection between the support plate 7200 and the oil filling cup 7100 is more stable.

[0069] In another embodiment of the grease cup assembly of the present invention, the groove wall of the strip groove 7140 is provided with an opening 7141, and the opening 7141 is provided at one end of the strip groove 7140 away from the bottom wall of the second accommodating cavity 7150. Figure 7 As shown, the groove wall of the strip groove 7140 is provided with an opening 7141 , and the size of the opening 7141 should be slightly larger than the size of the latch 7210 . Such a design can effectively improve the installation efficiency of the abutment plate 7200 and reduce the installation difficulty of the abutment plate 7200 .

[0070] In the embodiment of the present invention, the spring assembly 7300 includes a first elastic member 7310 and a second elastic member 7320, and the first elastic member 7310 is sleeved on the outer periphery of the second elastic member 7320. Figure 7 As shown, the first elastic member 7310 and the second elastic member 7320 are preferably springs, which have a simple structure, low manufacturing cost, and long service life. The spring assembly 7300 includes the first elastic member 7310 and the second elastic member 7320, which can serve as backup for each other and can simultaneously extend the service life of the first elastic member 7310 and the second elastic member 7320; in addition, the size of the first elastic member 7310 is larger than the size of the second elastic member 7320, that is, the first elastic member 7310 and the second elastic member 7320 have different action positions on the abutment plate 7200, so the deformation of the abutment plate 7200 can also be reduced.

[0071] In the embodiment of the utility model, the bottom wall of the second accommodating cavity 7150 is provided with a first retaining ring and a second retaining ring, the first retaining ring and the second retaining ring are arranged concentrically, the first elastic member 7310 is sleeved on the outer periphery of the first retaining ring, and the second elastic member 7320 is sleeved on the outer periphery of the second retaining ring; the first retaining ring is used to limit the first elastic member 7310, and the second retaining ring is used to limit the second elastic member 7320. The first retaining ring can be designed as a plurality of arc segments or a circular whole, and the second retaining ring can also be set as a circular whole or a plurality of arc segments. The first retaining ring is set to limit the first elastic member 7310, and the second retaining ring is set to limit the second elastic member 7320, which can ensure the stability of the positions of the first elastic member 7310 and the second elastic member 7320, thereby improving the structural stability of the grease cup assembly.

[0072] Furthermore, in an embodiment of the utility model, the stop plate 7200 is provided with a third stop ring and a fourth stop ring, the third stop ring corresponds to the first stop ring, and the diameters of the third stop ring and the first stop ring are substantially equal; the fourth stop ring corresponds to the second stop ring, and the diameter of the fourth stop ring is substantially equal to the diameter of the second stop ring; that is, the third stop ring is also used to limit the first elastic member 7310, and the fourth stop ring is also used to limit the second elastic member 7320, the first stop ring cooperates with the third stop ring, and is respectively used to limit the two ends of the first elastic member 7310, and the second stop ring cooperates with the fourth stop ring, and is respectively used to limit the two ends of the second elastic member 7320, and through the first stop ring, the second stop ring, the third stop ring and the fourth stop ring can effectively ensure that the first elastic member 7310 and the second elastic member 7320 can only be vertically extended and retracted, and are not prone to bending and other problems.

[0073] It should be noted that the height of the first retaining ring, the second retaining ring, the third retaining ring and the fourth retaining ring cannot be too high, as this will affect the volume of the grease bag 5000 that can be loaded into the second accommodating cavity 7150; at the same time, the height of the first retaining ring, the second retaining ring, the third retaining ring and the fourth retaining ring cannot be too low, and should at least play a role in limiting the first elastic member 7310 and the second elastic member 7320.

[0074] In the embodiments of the present invention, referring to Figure 7As shown, the center of the plate 7200 is recessed toward the bottom wall to form a protrusion 7220, the fourth retaining ring is arranged on the protrusion 7220, and the second elastic member 7320 is against the protrusion 7220. Specifically, the protrusion 7220 is arranged and the second elastic member 7320 is against the protrusion 7220, which can effectively reduce the concave deformation of the center of the plate 7200. Under the long-term action of the second elastic member 7320, the center position of the plate 7200 is easily deformed in a concave direction away from the bottom wall, and the protrusion 7220 is arranged in advance toward the bottom wall, and the protrusion 7220 is formed by the plate 7200 being recessed toward the bottom wall, which is equivalent to giving the center position of the plate 7200 an advance amount of deformation. Even if the protrusion 7220 is partially deformed, the deformed part of the protrusion 7220 will not contact the grease bag 5000, and thus will not affect the grease bag 5000 in contact with the plate 7200. In addition, compared with a flat abutment plate 7200 , the protrusion 7220 has a stronger ability to resist deformation, that is, the abutment plate 7200 is less likely to deform.

[0075] In the embodiment of the utility model, a working hole 7221 is provided at the center of the abutment plate 7200, which penetrates the abutment plate 7200. Specifically, the working hole 7221 is provided to facilitate adjustment of the abutment plate 7200. When the abutment plate 7200 deflects, a force is applied to the abutment plate 7200 through the working hole 7221, so that the abutment plate 7200 can be restored to a flat state.

[0076] In an embodiment of the utility model, the oil filling cup 7100 is provided with a connecting strip 7110 and an embedded block 7120, and the embedded block 7120 is arranged at the head end of the connecting strip 7110; the connecting strip 7110 is composed of a plurality of spaced-apart blocks 7111, and the volumes of the plurality of blocks 7111 increase successively along the direction from the head end to the tail end of the connecting strip 7110; the embedded block 7120 is arranged at the head end of the connecting strip 7110; the outer shell 1000 is provided with a connecting groove 1200 and a card groove 1210, and the card groove 1210 is arranged at the end of the connecting groove 1200, and the connecting strip 7110 installed in the connecting groove 1200, and the embedded block 7120 is embedded in the card groove 1210; wherein, the thickness of the embedded block 7120 is greater than or equal to the thickness of the card block 7111, and the depth of the card groove 1210 is greater than or equal to the depth of the connecting groove 1200. The oil filling cup 7100 and the outer shell 1000 are connected by a connecting strip 7110 and a connecting groove 1200, which has a simple structure and low manufacturing cost. The oil filling cup 7100 is also provided with an embedding block 7120, and the outer shell 1000 is provided with a slot 1210. The embedding block 7120 is embedded in the slot 1210 to improve the stability of the connection between the oil filling cup 7100 and the outer shell 1000. The connecting strip 7110 is composed of a plurality of spaced-apart blocks 7111. Such a design can reduce the deformation of the connecting strip 7110, reduce the manufacturing difficulty, and thus reduce the production cost.

[0077] In the embodiments of the present invention, referring to Figure 6 , Figure 7 As shown, there are multiple connecting strips 7110, and the multiple connecting strips 7110 are evenly spaced around the circumference, and the ends of the multiple connecting strips 7110 are all provided with embedded blocks 7120; there are multiple connecting grooves 1200 corresponding to the connecting strips 7110, and the multiple connecting grooves 1200 correspond to the multiple connecting strips 7110 one by one; and the ends of the multiple connecting grooves 1200 are all provided with clamping grooves 1210. Specifically, multiple means two or more, and in actual situation, it is preferably more than two, that is, at least three; in the drawings of this embodiment, the oil filling cup 7100 is provided with three connecting strips 7110, and the corresponding outer shell 1000 is provided with three connecting grooves 1200. Compared with two connecting strips 7110 and connecting grooves 1200, the connection effect of the three connecting strips 7110 and connecting grooves 1200 is more stable, and the length of the connecting strips 7110 and connecting grooves 1200 can also be appropriately shortened, thereby reducing the production difficulty and manufacturing cost.

[0078] Furthermore, the specific lengths of the connecting strips 7110 and the connecting grooves 1200 are not specifically limited in the present embodiment and can be selected according to actual circumstances. For example, if the oil filling cup 7100 is provided with three connecting strips 7110, then compared with the oil filling cup 7100 provided with four connecting strips 7110, the length of the former connecting strip 7110 will generally be greater than the length of the latter connecting strip 7110. However, since the sizes of the oil filling cups 7100 of automatic oilers of different sizes are different, the lengths of the connecting strips 7110 will also be different. Therefore, in the present embodiment, the specific lengths of the connecting strips 7110 and the connecting grooves 1200 are not limited.

[0079] In the embodiment of the utility model, along the direction from the head end to the tail end of the connecting strip 7110, the volume of the plurality of blocks 7111 increases successively. The volume of the plurality of blocks 7111 increases successively from multiple aspects, such as the height of the plurality of blocks 7111 increases successively, the width of the plurality of blocks 7111 increases successively, or the thickness of the plurality of blocks 7111 increases successively, etc. Therefore, the volume of the plurality of blocks 7111 increases successively can be the height, width, thickness of the block 7111 or one or more parameters increase successively. In this embodiment, the block 7111 at least selects the parameter of the height of the block 7111. Accordingly, the height of the block 7111 corresponds to the width of the connecting groove 1200. The height of the plurality of blocks 7111 increases successively, which also means that the width of the connecting groove 1200 increases successively along the length direction of the connecting groove 1200. Such a design can make it easier for the connecting strip 7110 to be transferred into the connecting groove 1200, thereby improving the convenience of connecting the oil filling cup 7100 and the outer shell 1000.

[0080] In an embodiment of the utility model, along the direction from the head end to the tail end of the connecting strip 7110, the thickness of the multiple blocks 7111 also increases successively. Correspondingly, the thickness of the blocks 7111 corresponds to the depth of the connecting groove 1200. Therefore, the sequential increase in the thickness of the multiple blocks 7111 also means that along the length direction of the connecting groove 1200, the depth of the connecting groove 1200 also increases successively. Such a design can form a step at the connection between the slot 1210 and the connecting groove 1200. When the embedded block 7120 is embedded in the slot 1210, the step at the connection between the slot 1210 and the connecting groove 1200 can hinder the embedded block 7120, reduce the possibility of the connecting strip 7110 sliding along the connecting groove 1200, and thus improve the stability of the connection between the oil filling cup 7100 and the outer shell 1000.

[0081] In the embodiment of the present invention, it can be seen from the above that the thickness of the embedded block 7120 is greater than or equal to the thickness of the card block 7111, and the thickness of the multiple card blocks 7111 constituting a single connecting strip 7110 is uneven, so the thickness of the embedded block 7120 is greater than the thickness of some card blocks 7111, and at the same time equal to the thickness of some card blocks 7111. For example, the thickness of the card block 7111 at the head end of the connecting strip 7110 is less than the thickness of the embedded block 7120, while the thickness of the card block 7111 at the tail end of the connecting strip 7110 is equal to the thickness of the embedded block 7120. Therefore, the thickness of the embedded block 7120 is greater than or equal to the thickness of the card block 7111. Accordingly, referring to Figure 3 As shown, the depth of the card slot 1210 is greater than or equal to the depth of the connecting slot 1200, which means that the depth of the connecting slot 1200 at one end close to the card slot 1210 is less than the depth of the card slot 1210, and the depth of the connecting slot 1200 at one end away from the card slot 1210 is equal to the depth of the card slot 1210, so a step is formed at the connection between the card slot 1210 and the connecting slot 1200.

[0082] Further, in the embodiments of the present invention, referring to Figure 6 As shown, the connection between the card slot 1210 and the connecting slot 1200 is provided with a circular chamfer, that is, the step at the connection between the card slot 1210 and the connecting slot 1200 is an arc shape. Figure 7 As shown, the cross section of the embedded block 7120 is triangular, and its end is also provided with a circular chamfer. Such a design can not only reduce the sliding effect of the connecting strip 7110 along the connecting groove 1200, but also avoid the problem of difficulty in separating the oil filling cup 7100 and the outer shell 1000.

[0083] In the embodiment of the utility model, the widths of the plurality of blocks 7111 are equal, and the spacings between adjacent blocks 7111 are also equal. In actual production, the connecting strip 7110 may be first processed into a whole, and then the whole connecting strip 7110 may be processed into a plurality of spaced blocks 7111 at a set spacing, so that the equal widths of the blocks 7111 can reduce the production difficulty, thereby reducing the manufacturing cost.

[0084] In the embodiment of the present invention, the distance between the embedded block 7120 and the connecting strip 7110 is greater than the distance between adjacent card blocks 7111. Figure 7 As shown, the spacing between the embedded block 7120 and the connecting strip 7110 is designed to be larger than the spacing between the adjacent blocks 7111, which can make it easier for the embedded block 7120 to be embedded in the card slot 1210. At the same time, because the thickness of the card block 7111 close to the embedded block 7120 is relatively small, the spacing between the embedded block 7120 and the connecting strip 7110 is designed to be slightly larger, which can also reduce the difficulty of production, so that the connecting strip 7110 does not need to manufacture a card block 7111 with too small thickness. Further, the depth of the connecting groove 1200 corresponds to the thickness of the connecting strip 7110, and the card slot 1210 is set at one end of the connecting groove 1200. Therefore, the spacing between the embedded block 7120 and the connecting strip 7110 is designed to be slightly larger, which will make the step at the connection between the card slot 1210 and the connecting groove 1200 more obvious, thereby improving the stability of the connection between the oil filling cup 7100 and the outer shell 1000.

[0085] In the embodiment of the present utility model, the outer shell 1000 is provided with a radially protruding ring 1230, and when the embedding block 7120 is embedded in the slot 1210, the end of the oil filling cup 7100 contacts the ring 1230. Figure 6 As shown, the annular ring 1230 is arranged below the connecting groove 1200, and a sealing groove 1240 is arranged between the annular ring 1230 and the groove wall of the connecting groove 1200, and a sealing ring is installed in the sealing groove 1240. The annular ring 1230 is arranged to contact the oil filling cup 7100, and the sealing groove 1240 is formed for installing the sealing ring, which can effectively prevent dust, water vapor, etc. from entering the interior of the small automatic oil filling machine to damage the equipment inside the small automatic oil filling machine.

[0086] In the embodiment of the present utility model, the bottom of the outer shell 1000 is provided with a mounting hole 1150 penetrating the outer shell 1000, and a waterproof and breathable structure is provided in the mounting hole 1150. Figure 6As shown, the waterproof and breathable structure can be a structure such as a waterproof and breathable membrane. The specific waterproof and breathable membrane can be purchased from existing technologies currently on the market. By installing the waterproof and breathable structure in the mounting hole 1150, it can prevent water vapor from entering the small automatic oil filling machine and causing condensation inside the small automatic oil filling machine. At the same time, it can enable the gas inside the small automatic oil filling machine to be exchanged with the outside world, thereby avoiding high temperature, high pressure and other problems inside the small automatic oil filling machine that affect the service life of the small automatic oil filling machine.

[0087] In the embodiments of the present invention, referring to Figure 6 As shown, the outer peripheral wall of the outer shell 1000 is also provided with a square hole 1160 penetrating the outer shell 1000, and the side wall of the square hole 1160 is provided with a mounting plate 1161 extending toward the center of the square hole 1160, and the mounting plate 1161 is provided with a stud 1162, and the stud 1162 is provided with a threaded hole; the square hole 1160 is used to install the control panel 1300, and the control panel 1300 is connected to the stud 1162 on the mounting plate 1161 by bolts.

[0088] In the embodiment of the utility model, the top of the outer shell 1000 is connected to the oil filling cup 7100, and the bottom of the outer shell 1000 is conical; the through hole 1130 is set at the center of the bottom of the outer shell 1000, and the hole wall of the through hole 1130 is provided with a reinforcing plate 1131. Specifically, the bottom of the outer shell 1000 is set in a conical shape, which can effectively improve its structural strength; the hole wall of the through hole 1130 extends downward from the lower surface of the outer shell 1000, and the reinforcing plate 1131 is set at the periphery of the through hole 1130. The reinforcing plate 1131 is fixedly connected to the hole wall of the through hole 1130 and the lower surface of the outer shell 1000, such as welding or integral molding; the reinforcing plate 1131 can also improve the structural strength of the small automatic oiling machine.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0090] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A small automatic oil filling machine, characterized in that: include: The outer shell has a first accommodating cavity, and a first supporting column is provided at the bottom of the first accommodating cavity; the top of the outer shell is open, and the bottom is provided with an oil outlet bolt penetrating the outer shell; A reduction box structure, installed in the first accommodating cavity, the reduction box structure is connected to an output gear; A protective shell is installed above the reduction box structure and connected to the reduction box structure; An assembly structure, comprising an assembly plate and a battery compartment, wherein the assembly plate is disposed above the protective shell and connected to the protective shell, the battery compartment is used to install a power source, and the battery compartment extends downward to abut against the first support column; A grease bag is installed above the general assembly structure and connected to the general assembly plate; The oil pump assembly is installed between the general assembly structure and the reduction gear box structure and is connected to the output gear transmission; the battery compartment is arranged around the outer periphery of the oil pump assembly; the top of the oil pump assembly extends to the general assembly structure and is connected to the grease bag, and the bottom of the oil pump assembly passes through the reduction gear box to be connected to the oil outlet bolt; the oil pump assembly is used to pump out the grease in the grease bag through the oil outlet bolt; A grease cup assembly is connected to the top of the outer shell and is arranged on the periphery of the grease bag; the grease cup assembly is used to squeeze out the grease in the grease bag.

2. The small automatic oil filling machine according to claim 1 is characterized in that: The oil pump assembly includes an oil pump pipe, an intermediate gear and an oil pump screw. The oil pump pipe is clamped between the general assembly structure and the protective shell, and the intermediate gear is clamped between the protective shell and the reduction box structure. The top of the oil pump screw is slidably penetrated through the oil pump pipe, and the intermediate gear is sleeved on the outer periphery of the oil pump screw and is transmission-connected with the oil pump screw. The intermediate gear rotates around its own axis to drive the oil pumping screw to slide relative to the oil pumping pipe; the top of the oil pumping pipe is connected to the grease bag, and the oil pumping screw passes through the reduction box structure to be connected to the oil outlet bolt.

3. The small automatic oil filling machine according to claim 2 is characterized in that: A first center hole is provided at the center of the general assembly plate, and an oil outlet pipe is provided in the grease bag. The oil outlet pipe is passed through the first center hole and is threadedly connected to the first center hole; the oil pump pipe is passed through the first center hole, and the top of the oil pump pipe is inserted into the oil outlet pipe, the upper part of the oil pump pipe is sealed and connected to the oil outlet pipe, and the middle part of the oil pump pipe is sealed and connected to the first center hole.

4. The small automatic oil filling machine according to claim 3 is characterized in that: The protective shell has a second center hole, the reduction box structure is provided with a third center hole, and the first center hole, the second center hole, and the third center hole are coaxially arranged; The lower part of the oil pumping pipe is passed through the second center hole, and an oil collecting groove is provided on the outer periphery of the second center hole; an oil delivery pipe is installed in the third center hole, and the lower part of the oil pumping screw is passed through the oil delivery pipe, and the oil delivery pipe is used to limit the rotation of the oil pumping screw around its own axis.

5. The small automatic oil filling machine according to claim 1 is characterized in that: A battery box is installed in the battery compartment, and the battery box is detachably connected to the battery compartment; an elastic structure is installed at the bottom of the battery compartment, and the elastic structure is against the battery box, and the first support column is against the elastic structure.

6. The small automatic oil filling machine according to claim 5 is characterized in that: The bottom of the battery compartment is provided with a bottom hole that passes through the battery compartment, the side wall of the bottom hole is provided with a first limiting structure extending toward the center, and the battery compartment is provided with a second limiting structure extending toward the center of the bottom hole. The elastic structure includes a circular plate and a conical spring, the circular plate is clamped between the first limiting structure and the second limiting structure, the first end of the conical spring is connected to the circular plate, and the second end of the conical spring is against the battery box; the first support column is against the bottom of the circular plate.

7. The small automatic oil filling machine according to claim 6 is characterized in that: The battery compartment is arc-shaped and is provided with two bottom holes, which are spaced apart around the circumference, and the elastic structure is installed in the two bottom holes; the reduction gear box structure is provided with a second support column, and the first support column and the second support column are respectively against the circular plates of the two elastic structures.

8. The small automatic oil filling machine according to claim 1 is characterized in that: The grease cup assembly comprises an oil filling cup, a stopper plate and a spring assembly, wherein the oil filling cup has a second accommodating cavity for placing the grease bag, and a side wall of the second accommodating cavity is provided with a strip groove; a plurality of the strip grooves are provided, and the plurality of the strip grooves are evenly spaced around the circumference; The abutment plate is provided with a radially protruding bayonet, the bayonet is slidably installed in the strip groove, and a plurality of bayonet are provided corresponding to the strip groove; the abutment plate abuts against the top of the grease bag; The spring group is installed in the second accommodating cavity, and two ends of the spring group are respectively against the bottom wall of the oil filling cup and the abutment plate.

9. The small automatic oil filling machine according to claim 8, characterized in that: The oil filling cup is provided with a connecting strip and an embedded block, wherein the embedded block is arranged at the head end of the connecting strip; the connecting strip is composed of a plurality of card blocks arranged at intervals, and the volumes of the plurality of card blocks increase in sequence along the direction from the head end to the tail end of the connecting strip; the embedded block is arranged at the head end of the connecting strip; The outer shell is provided with a connecting groove and a clamping groove, the clamping groove is arranged at the end of the connecting groove, the connecting strip is installed in the connecting groove, and the embedding block is embedded in the clamping groove; Wherein, the thickness of the embedding block is greater than or equal to the thickness of the clamping block, and the depth of the clamping groove is greater than or equal to the depth of the connecting groove.

10. The small automatic oil filling machine according to claim 9, characterized in that: Along the direction from the head end to the tail end of the connecting strip, the heights of the plurality of clamping blocks increase sequentially; along the length direction of the connecting groove, the width of the connecting groove increases sequentially.

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