Novel grease pumping device of grease gun

Abstract

The utility model belongs to the technical field of grease guns, and particularly relates to a novel grease pumping device of a grease gun, which comprises a mounting cover capable of being directly or indirectly connected with a grease gun barrel, a grease pumping mechanism arranged on the mounting cover and a piston, the oil pumping mechanism comprises a rope winding wheel erected on the mounting cover, a pull rope arranged between the rope winding wheel and the piston and a driving device for controlling the rope winding wheel to rotate, the two ends of the pull rope are connected with the rope winding wheel and the piston respectively, and the rope winding wheel can be driven to rotate by driving the driving device. The rope winding wheel rotates to drive the pull rope to move backwards and wind the pull rope on the rope winding wheel, the pull rope moves backwards to drive the piston to move backwards, so that the grease is pumped into the grease gun barrel, the production cost can be reduced, when the grease pumping device is installed in the grease gun barrel, the whole grease gun barrel can be lighter and more convenient to use, and the service life of the grease pumping device is prolonged. And when the grease gun barrel is filled with grease, the pull rope cannot be exposed out of the grease gun barrel, and the situation that an operator uses the grease gun due to the fact that the pull rope hits the arm of the operator is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of butter gun, especially a novel butter gun's oil pumping device. BACKGROUND

[0002] Butter gun is a hardware equipment, and is a commonly used tool for maintaining and repairing machines. It is used to pump butter or other lubricating oil into the butter gun barrel, and then the oil is evenly applied to the lubricated parts through the extrusion of the extrusion device and the oil nozzle. Because it is light and durable, it has been widely used. The oil pumping device in the butter gun barrel on the market is basically composed of a piston, a chain connected to the piston, and a pulling member connected to the chain. For example, Chinese patent CN221402648U is composed of a barrel, a piston arranged in the barrel, a zipper connected to the piston, and an operating part. When the operator pumps butter, the operating part needs to be pulled to drive the zipper to move upwards. At this time, the zipper drives the piston to move synchronously during the upward movement, thereby pumping the butter into the barrel. However, after the barrel finishes pumping oil, most of the zipper is exposed outside the barrel, and the operator needs to install the barrel on the butter gun head before working. The exposed zipper will swing randomly, and even hit the operator's arm, thereby affecting the operator's use of the butter gun. In order to ensure the service life of the zipper, the zipper uses a common iron chain on the market, which has a high cost. In addition, the weight of the iron chain itself is heavy, thereby increasing the overall weight of the barrel and making it less portable. SUMMARY

[0003] The utility model aims to provide a simple structure, which can reduce production cost, and when the oil pumping device is installed in the butter gun barrel, the overall butter gun barrel is more portable. When the butter in the butter gun barrel is full, the pull rope will not be exposed outside the butter gun barrel, and the operator will not be affected by the pull rope hitting the arm.

[0004] The utility model is achieved as follows:

[0005] A novel butter gun's oil pumping device, comprising a mounting cover directly or indirectly connected with a butter gun barrel, an oil pumping mechanism arranged on the mounting cover, and a piston connected with the oil pumping mechanism, wherein the oil pumping mechanism can drive the piston to move backward along the inner wall of the butter gun barrel. The oil pumping mechanism comprises a rope winding wheel arranged on the mounting cover, a pull rope arranged between the rope winding wheel and the piston, and a driving device for controlling the rotation of the rope winding wheel. The two ends of the pull rope are connected with the rope winding wheel and the piston respectively. The driving device can drive the rotation of the rope winding wheel. The rotation of the rope winding wheel can drive the pull rope to move backward and wind the pull rope on the rope winding wheel. The backward movement of the pull rope can drive the piston to move backward, thereby pumping the butter into the butter gun barrel.

[0006] Further, one side of the rope collecting wheel is provided with a gear part, the driving device comprises a driving gear and a driving part connected with the driving gear, the driving gear is engaged with the gear part, and the top end of the driving part is exposed outside the mounting cover.

[0007] Further, a push oil spring is arranged between the mounting cover and the piston, two ends of the push oil spring are respectively abutted with the lower surface of the mounting cover and the piston, a ratchet ring is arranged on the mounting cover, an inclined ring of the driving part is provided with a clamping table, the ratchet ring is sleeved on the driving part, the ratchet ring is provided with a clamping part, the clamping part is clamped with the clamping table, so that the driving part can only rotate in one direction.

[0008] Further, a connecting cavity is formed in the driving gear, the inner wall of the connecting cavity is provided with a clamping tooth part, the driving part is movably arranged in the connecting cavity, the driving part is provided with a connecting gear engaged with the clamping tooth part, the top end of the driving part is rotatably provided with a driving handle, a rotating groove is formed in the front end of the driving handle, the shape of the rotating groove is "N" shape, the top end of the driving part is rotatably connected with the driving handle in the rotating groove, after the driving handle is controlled to rotate, the front end of the driving handle is abutted with the upper surface of the mounting cover, so as to pull the driving part to move upward, at this time, the connecting gear is separated from the clamping tooth part, and the connecting gear and the driving gear are in a clutching state.

[0009] Further, an installation hole is formed in the top end of the driving part, a rotating shaft is arranged in the installation hole, rotating holes are formed in the inner walls on both sides of the rotating groove, and two ends of the rotating shaft are respectively located in the rotating holes on both sides of the rotating groove.

[0010] Further, a reset spring is arranged in the connecting cavity, the bottom end of the reset spring is abutted with the connecting gear, and the driving part is driven to move upward, so as to drive the connecting gear to move upward synchronously, at this time, the connecting gear compresses the reset spring.

[0011] Further, the mounting cover comprises a fixed cover and a connecting cover, a rotating rod is transversely arranged at the bottom of the fixed cover, the rope collecting wheel is sleeved on the rotating rod, an abutment table is formed in the inner wall of the fixed cover, the push oil spring is located between the abutment table and the piston, two ends of the push oil spring are respectively abutted with the abutment table and the piston, and the top of the push oil spring can be attached to the inner wall of the fixed cover, the connecting cover is sleeved on the fixed cover, and the inner wall of the connecting cover is provided with an internal thread.

[0012] Further, a protection frame is movably arranged at the bottom of the fixed cover, the protection frame is located above the piston, the distance between the bottom end of the protection frame and the piston is shorter than the distance between the rope collecting wheel and the piston, a top column is arranged at the top end of the protection frame, a top groove is arranged at the bottom end of the driving part, and the top column is located below the top groove.

[0013] Further, the protection frame comprises symmetrically shaped vertical plates and a horizontal plate arranged between the two vertical plates, the top column is arranged on the upper surface of the horizontal plate, the rope collecting wheel is located between the symmetrically shaped vertical plates and below the horizontal plate, and the horizontal plate is attached to the rope collecting wheel, the horizontal plate is provided with a slot, one side of the rope collecting wheel is exposed outside the slot, a backrest is vertically arranged between the symmetrically shaped vertical plates, the backrest is attached to one side of the rope collecting wheel, the backrest is provided with a waist-shaped hole, and the rotating rod passes through the waist-shaped hole.

[0014] Further, the fixing cover is provided with a bearing hole, the driving gear is located in the bearing hole, a rotating bearing is arranged in the bearing hole, the rotating bearing is sleeved on the driving gear, the inner wall of the bearing hole is provided with a limiting table, the driving gear is provided with a mounting table, the two ends of the rotating bearing are respectively in abutment with the limiting table and the mounting table, the middle part of the upper surface of the piston is provided with a connecting part, the connecting part is provided with a connecting hole, and one end of the pull rope is arranged in the connecting hole and fixedly connected with the connecting part.

[0015] The utility model discloses compared with prior art has the beneficial technical effects of being prominent:

[0016] The utility model belongs to the grease gun technical field, especially point to a kind of new grease gun's oil pumping device, including installation cover, set on the oil pumping mechanism of installation cover and the piston being connected with oil pumping mechanism, and installation cover can be directly or indirectly connected with grease gun barrel, so that oil pumping device can be smoothly installed to the inside of grease gun barrel, when oil pumping device is installed to the inside of grease gun barrel, piston is adhered to the inner wall of grease gun barrel at this time, so that when oil pumping mechanism drives piston to move backward along the inner wall of grease gun barrel, ensure that piston can smoothly suck grease into the inside of grease gun barrel, and oil pumping mechanism includes the reel of erection on installation cover, the pull rope between reel and piston and the driving device of control reel rotation, since the both ends of pull rope are connected with reel and piston respectively, when operator controls reel to rotate in situ by driving device, reel will wind pull rope on reel at this time, the bottom end of pull rope moves backward, when the bottom end of pull rope moves backward, piston is driven to move backward along the inner wall of grease gun barrel, so as to suck grease into the inside of grease gun barrel, compared with the oil pumping device in the inside of grease gun barrel on the market, basically all by piston, iron chain connected with piston and pulling member connected with iron chain, operator needs to pull pulling member to drive iron chain to move towards the outside of grease gun barrel, finally, iron chain moves outward to drive piston to move backward, and grease is extracted into the inside of grease gun barrel, but finally, when the oil pumping of grease gun barrel is completed, most of iron chain is exposed outside grease gun pipe at this time, operator installs grease gun barrel to grease gun head after work, and iron chain exposed outside grease gun pipe will swing randomly, even it can hit the arm of operator, so as to affect operator to use grease gun, and the cost of this kind of iron chain is higher, increase the manufacturing cost of oil pumping device, at the same time, since the weight of iron chain is heavy, when oil pumping device is installed to the inside of grease gun barrel, it can cause the overall weight of grease gun barrel to increase, not light enough, and the utility model drives reel to rotate in situ by driving device, so as to wind pull rope on reel at the same time, and pull rope moves backward, finally, pull rope drives piston to move backward to complete the oil pumping of grease gun barrel, when the grease in the inside of grease gun barrel is full, pull rope is finally only wound on reel, and pull rope is not exposed outside grease gun barrel, operator installs grease gun barrel to grease gun head after work at this time, it will not affect operator to use grease gun because pull rope hits the arm of operator, and the cost of reel is greatly reduced compared with the cost of iron chain, so as to reduce the overall production cost of oil pumping device, and the weight of pull rope itself is light, when oil pumping device is installed to the inside of grease gun barrel, it can make the overall of grease gun barrel more portable, so as to facilitate operator to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective drawing of the utility model.

[0018] Figure 2 It is the sectional view of the utility model.

[0019] Figure 3 Is the explosion drawing of the driving handle, rotating shaft and driving part of the utility model.

[0020] Figure 4 Is the explosion drawing of the connecting cover and the fixed cover of the utility model.

[0021] Figure 5 Is the perspective view of the connecting cover of the utility model.

[0022] Figure 6 Is the explosion drawing of the fixed cover, piston and pull rope of the utility model.

[0023] Figure 7 Is the structure schematic view of the rope collecting wheel and the fixed cover of the utility model.

[0024] Figure 8 Is the explosion drawing of the fixed cover, oil pumping mechanism and protection frame of the utility model.

[0025] Figure 9 Is the perspective view of the fixed cover and rotating rod of the utility model.

[0026] Figure 10 Is the explosion drawing of the protection frame and rope collecting wheel of the utility model.

[0027] Figure 11 Is the perspective view of the protection frame of the utility model.

[0028] Figure 12 Is the explosion drawing of the rope collecting wheel and driving device of the utility model.

[0029] Figure 13 Is the structure schematic view of the clamping tooth and linkage gear of the utility model.

[0030] Figure 14 Is the structure schematic view of the driving gear and driving part of the utility model.

[0031] Figure 15 Is the explosion drawing of the driving gear and rotating bearing of the utility model.

[0032] Figure 16 Is the structure schematic view of the ratchet ring and driving part of the utility model.

[0033] Figure 17 Is the explosion drawing of the ratchet ring and driving part of the utility model.

[0034] Figure 18 Is the perspective view of the driving part of the utility model.

[0035] Figure 19 Is the structure schematic view of the utility model.

[0036] Figure 20is the sectional view of the utility model.

[0037] Figure 21 is the state reference drawing of the utility model drive handle standing on the installation cover.

[0038] Figure 22 is the sectional view of the utility model drive part and drive gear in the clutch state.

[0039] The meaning represented by the reference numeral in the drawing:

[0040] 1-installation cover;2-piston;3-rope collecting wheel;4-pulling rope;5-driving device;6-gear part;

[0041] 7-drive part;8-oil pushing spring;9-ratchet ring;10-clamping table;11-clamping part;

[0042] 12-linkage cavity;13-clamping tooth part;14-linkage gear;15-drive handle;16-rotation groove;

[0043] 17-installation hole;18-rotation shaft;19-rotation hole;20-return spring;21-fixing cover;

[0044] 22-connection cover;23-rotation rod;24-abutment table;25-inner thread;26-protection frame;

[0045] 27-top column;28-top groove;29-cross plate;30-vertical plate;31-giving way groove;32-lean plate;

[0046] 33-waist-shaped hole;34-bearing hole;35-rotation bearing;36-limit table;

[0047] 37-installation table;38-connection part;39-connection hole;40-drive gear. DETAILED DESCRIPTION

[0048] The utility model will be further described in connection with specific embodiment:

[0049] The utility model belongs to butter gun technical field, especially point to a kind of new butter gun's oil pumping device, including installation cover 1, setting on installation cover 1 and the piston 2 of oil pumping mechanism and being connected with oil pumping mechanism, and installation cover 1 can be directly or indirectly connected with butter gun barrel, so that oil pumping device can be smoothly installed to butter gun barrel, when oil pumping device is installed to butter gun barrel, piston 2 is adhered to the inner wall of butter gun barrel at this time, so when oil pumping mechanism drives piston 2 to move back along the inner wall of butter gun barrel, ensure that piston 2 can smoothly pump butter into butter gun barrel, and oil pumping mechanism includes the rope winding wheel 3 of erecting on installation cover 1, the pull rope 4 between setting rope winding wheel 3 and piston 2 and the driving device 5 of control rope winding wheel 3 rotation, since the both ends of pull rope 4 are connected with rope winding wheel 3 and piston 2 respectively, when operator controls rope winding wheel 3 to rotate in situ by driving device 5, at this time, rope winding wheel 3 will be wound to pull rope 4 on rope winding wheel 3, so that the bottom end of pull rope 4 moves back, when the bottom end of pull rope 4 moves back, it will drive piston 2 to move back along the inner wall of butter gun barrel, so as to pump butter into butter gun barrel, compared with the oil pumping device in the butter gun barrel on the market, basically all by piston 2, iron chain connected with piston 2 and pulling piece connected with iron chain, operator needs to pull pulling piece to drive iron chain to move towards butter gun barrel, finally, iron chain moves outward to drive piston 2 to move back, and butter is pumped into butter gun barrel, but finally, when butter gun barrel pumping is completed, most of iron chain is exposed outside butter gun tube at this time, operator installs butter gun barrel to butter gun head after work, and iron chain exposed outside butter gun tube will swing randomly, even it will hit the arm of operator, so as to affect operator to use butter gun, and the cost of this kind of iron chain is higher, increases the manufacturing cost of oil pumping device, at the same time, since the weight of iron chain is heavy, when oil pumping device is installed to butter gun barrel, it will cause the overall weight of butter gun barrel to increase, not light enough, and the utility model drives rope winding wheel 3 to rotate in situ by driving device 5, so that pull rope 4 is wound to rope winding wheel 3 at the same time, and pull rope 4 moves back, finally, pull rope 4 drives piston 2 to move back to complete the oil pumping work of butter gun barrel, when butter in butter gun barrel is full, pull rope 4 will finally be wound to rope winding wheel 3, and pull rope 4 will not be exposed outside butter gun barrel, at this time, operator installs butter gun barrel to butter gun head after work, and it will not affect operator to use butter gun because pull rope 4 hits the arm of operator, and the cost of rope winding wheel 3 is greatly reduced compared with the cost of iron chain, so that the overall production cost of oil pumping device is reduced, and the weight of pull rope 4 itself is light, when oil pumping device is installed to butter gun barrel, it can make the overall of butter gun barrel more portable, so as to facilitate operator to use.

[0050] Preferably, one side of the rope winding wheel 3 is provided with a gear part 6, the driving device 5 comprises a driving gear 40 and a driving part 7 connected with the driving gear 40, the driving gear 40 is engaged with the gear part 6, and the top end of the driving part 7 is exposed outside the mounting cover 1; the driving device 5 is composed of the driving gear 40 and the driving part 7, and the driving gear 40 is engaged with the gear part 6 on one side of the rope winding wheel 3; since the top end of the driving part 7 is exposed outside the mounting cover 1, the operator can more conveniently control the rotation of the driving part 7; when the operator controls the rotation of the driving part 7, the driving part 7 will drive the driving gear 40 to rotate since the driving part 7 is connected with the driving gear 40; the driving gear 40 will drive the gear part 6 to rotate; the gear part 6 will drive the rope winding wheel 3 to rotate at the same time; thus the pull rope 4 can be smoothly wound by the rope winding wheel 3; finally the piston 2 can be smoothly moved backward; the structure of the mutual engagement of the gears can make the operator save labor when rotating the rope winding wheel 3; thus the operator can easily draw the butter into the butter gun barrel.

[0051] Preferably, the mounting cover 1 and the piston 2 are provided with a butter pushing spring 8, both ends of the butter pushing spring 8 are respectively abutted with the lower surface of the mounting cover 1 and the piston 2, the mounting cover 1 is provided with a ratchet ring 9, the driving part 7 is provided with a clamping table 10, the ratchet ring 9 is sleeved on the driving part 7, and the ratchet ring 9 is provided with a clamping part 11, the clamping part 11 is clamped with the clamping table 10, so that the driving part 7 can only rotate in one direction; since the ratchet ring 9, the clamping part 11 and the clamping table 10 form the common ratchet mechanism in the market, which is a kind of one-way intermittent motion mechanism, can be used for one-way driving and preventing reverse rotation, and is commonly used in the indexing of various machine tools or rotary worktables; when the operator controls the driving part 7 to rotate clockwise, the driving part 7 can normally rotate; the driving part 7 will drive the piston 2 to move backward after rotating; the piston 2 will exert pressure on the butter pushing spring 8, so that the butter pushing spring 8 is in a compressed state; when the operator finishes drawing the butter, the compressed reset spring 20 will exert a pushing force on the piston 2; however, since the clamping part 11 on the ratchet ring 9 is clamped with the clamping table 10 which is obliquely arranged on the driving part 7, the driving part 7 cannot normally rotate counterclockwise; the driving gear 40 connected with the driving part 7 cannot rotate; the rope winding wheel 3 engaged with the driving gear 40 through the gear part 6 cannot rotate; finally, the rope winding wheel 3 cannot rotate, so the pull rope 4 cannot move forward; the compressed reset spring 20 cannot push the piston 2 to move outward; the situation that the butter in the butter gun barrel is directly pushed out of the butter gun barrel by the piston 2 during the process of installing the butter gun barrel to the butter gun head can be avoided; the waste of butter can be avoided; and the operator can smoothly install the butter gun barrel to the butter gun head.

[0052] Preferably, the drive gear 40 is hollowly formed with a linkage cavity 12, the inner wall of the linkage cavity 12 is provided with a clamping tooth part 13, the drive part 7 is movably arranged in the linkage cavity 12, the drive part 7 is provided with a linkage gear 14 which is engaged with the clamping tooth part 13, the top end of the drive part 7 is rotatably provided with a drive handle 15, the front end of the drive handle 15 is provided with a rotating groove 16, the shape of the rotating groove 16 is a "N" shape, the top end of the drive part 7 is located in the rotating groove 16 and is rotatably connected with the drive handle 15, after the drive handle 15 is controlled to rotate, the front end of the drive handle 15 abuts against the upper surface of the mounting cover 1, so as to pull the drive part 7 to move upward, at this time, the linkage gear 14 is disengaged from the clamping tooth part 13, and the linkage gear 14 and the drive gear 40 are in a clutching state; when the operator wants to draw butter into the butter gun barrel, at this time, the operator can drive the drive part 7 to rotate by rotating the drive handle 15 at the top end of the drive part 7, the drive handle 15 is arranged to facilitate the operator to control the rotation of the drive part 7, and when the drive part 7 rotates, the linkage gear 14 will rotate, since the linkage gear 14 is engaged with the clamping tooth part 13 on the inner wall of the linkage cavity 12, at this time, the drive gear 40 will rotate synchronously, so that the rope winding wheel 3 can rotate, and since the top end of the drive part 7 is located in the rotating groove 16 at the front end of the drive handle 15 and is rotatably connected with the drive handle 15, the shape of the rotating groove 16 is a "N" shape, after the oil drawing work is completed, at this time, the operator can rotate the drive handle 15 relative to the drive part 7, at this time, one side of the front end of the drive handle 15 will first abut against the upper surface of the mounting cover 1, at this time, after the operator continues to drive the rotating handle to rotate, since the drive part 7 is movably arranged in the linkage cavity 12, the drive handle 15 can smoothly pull the drive part 7 to move upward, finally, the drive handle 15 will stand on the mounting cover 1, when the drive part 7 moves upward, the linkage gear 14 on the drive part 7 will be disengaged from the clamping tooth part 13, so that the drive gear 40 and the linkage gear 14 are in a clutching state, at this time, the drive gear 40 can normally rotate counterclockwise relative to the drive part 7, at this time, the rope winding wheel 3 which is engaged with the drive gear 40 through the gear part 6 can also normally rotate, finally, the compressed reset spring 20 can push the piston 2 to move forward, so that the pull rope 4 wound on the rope winding wheel 3 can be smoothly unfolded, the piston 2 can smoothly push the butter into the butter gun barrel, and the butter gun can be normally used, and the butter gun will not be affected in normal oil output because the oil pushing spring 8 cannot push the piston 2 to move forward.

[0053] Preferably, the top end of the driving part 7 is provided with a mounting hole 17, a rotating shaft 18 is arranged in the mounting hole 17, rotating holes 19 are arranged in the inner walls on the two sides of the rotating groove 16, and the two ends of the rotating shaft 18 are respectively located in the rotating holes 19 on the two sides of the rotating groove 16; the driving handle 15 is rotatably connected with the top end of the driving part 7 through the rotating shaft 18 in the mounting hole 17 and the rotating holes 19, and this connection mode is more stable and firm.

[0054] Preferably, the linkage cavity 12 is provided with a return spring 20, the bottom end of the return spring 20 abuts against the linkage gear 14, driving the driving part 7 to move upward can drive the linkage gear 14 to move upward synchronously, at this time, the linkage gear 14 compresses the return spring 20; because the return spring 20 in the linkage cavity 12 abuts against the linkage gear 14 on the driving part 7, the linkage gear 14 can be in meshing state with the toothed portion 13 of the inner wall of the linkage cavity 12 at any time, thereby ensuring that when the driving part 7 rotates, the driving gear 40 can be smoothly driven to rotate through the linkage gear 14 and the toothed portion 13, so that the oil extracting device can smoothly extract butter into the butter gun barrel, and after the operator controls the driving handle 15 to rotate relative to the driving part 7, the driving part 7 and the linkage gear 14 on the driving part 7 move upward, at this time, the return spring 20 is in a compressed state, and after the driving handle 15 is rotated relative to the driving part 7, the driving handle 15 is vertically erected on the mounting cover 1, and because the compressed return spring 20 exerts a downward pushing force on the linkage gear 14 and the driving part 7, the driving part 7 exerts a downward pressure on the driving handle 15 through the rotating shaft 18, thereby ensuring that the driving handle 15 can be vertically erected on the mounting cover 1 without external force, and when the operator needs to extract butter into the butter gun barrel again, the operator can bend the driving handle 15 to remove the vertical state between the driving handle 15 and the mounting cover 1, and at the same time, the compressed return spring 20 drives the driving part 7 to move downward by pushing the linkage gear 14 to move downward, so that the linkage gear 14 re-enters the meshing state with the toothed portion 13 on the driving gear 40, at this time, the operator can smoothly drive the driving gear 40 to rotate through the driving part 7 and the linkage gear 14 after rotating the driving handle 15, so that the driving gear 40 can smoothly drive the winding reel 3 to rotate.

[0055] Preferably, the installation cover 1 comprises a fixed cover 21 and a connecting cover 22, the bottom of the fixed cover 21 is transversely provided with a rotating rod 23, the rope collecting wheel 3 is sleeved on the rotating rod 23, the inner wall of the fixed cover 21 is formed with an abutting table 24, the oil pushing spring 8 is located between the abutting table 24 and the piston 2, both ends of the oil pushing spring 8 are respectively abutted with the abutting table 24 and the piston 2, and the top of the oil pushing spring 8 can be fitted with the inner wall of the fixed cover 21, the connecting cover 22 is sleeved on the fixed cover 21, and the inner wall of the connecting cover 22 is provided with an internal thread 25; the connecting cover 22 is connected with the fixed cover 21 by being sleeved on the fixed cover 21, the connecting cover 22 is a gun cover at the rear end of the grease gun barrel on the market, the internal thread 25 of the inner wall of the connecting cover 22 matches the external thread of the rear end of the grease gun barrel, when the oil pumping device is installed, the operator first places the fixed cover 21 into the rear end of the grease gun barrel, then the connecting cover 22 is threadedly connected with the rear end of the grease gun barrel, so that the oil pumping device is smoothly installed into the grease gun barrel, the top end of the oil pushing spring 8 is abutted with the abutting table 24 formed on the inner wall of the fixed cover 21, and the top of the oil pushing spring 8 can be fitted with the inner wall of the fixed cover 21, so as to effectively limit the top end of the oil pushing spring 8 from being separated from the abutting table 24, and the rope collecting wheel 3 is sleeved on the rotating rod 23 at the bottom of the fixed cover 21, so that the rope collecting wheel 3 is arranged at the bottom of the fixed cover 21, and the rope collecting wheel 3 will not suddenly fall during winding the pulling rope 4.

[0056] The bottom of the fixed cover 21 is movably provided with a protection frame 26, the protection frame 26 is located above the piston 2, the distance between the bottom of the protection frame 26 and the piston 2 is shorter than the distance between the rope collecting wheel 3 and the piston 2, the top end of the protection frame 26 is provided with a top column 27, the bottom end of the driving part 7 is provided with a top groove 28, and the top column 27 is located below the top groove 28; since the distance between the bottom of the protection frame 26 and the piston 2 is shorter than the distance between the rope collecting wheel 3 and the piston 2, and the protection frame 26 is located above the piston 2, when the piston 2 moves backward to compress the oil pushing spring 8 to the limit length, the piston 2 will first contact the bottom of the protection frame 26, so as to drive the protection frame 26 to move backward, since the top column 27 at the top end of the protection frame 26 is located below the top groove 28 at the bottom end of the driving part 7, when the protection frame 26 moves backward, the top column 27 at the top end of the protection frame 26 will first enter the top groove 28, at this time, the piston 2 continues to move backward to drive the protection frame 26 to continue to move backward, when the piston 2 compresses the oil pushing spring 8 to the limit length, at this time, the top column 27 will drive the driving part 7 to move upward, so that the connecting gear 14 on the driving part 7 is disengaged from the clamping tooth part 13 on the driving gear 40, and the driving part 7 is in the clutch state with the driving gear 40, at this time, even if the operator continues to rotate the driving handle 15, the piston 2 will not continue to move backward, so as to avoid the situation that the piston 2 continues to move backward to cause damage to the oil pushing spring 8 after the piston 2 compresses the oil pushing spring 8 to the limit length, and when the oil pushing spring is compressed to the limit length, at this time, it is difficult for the piston 2 to continue to move backward, if the clamping tooth part 13 and the connecting gear 14 are still in the meshing state, the operator continues to control the driving part 7 to rotate, which is easy to cause damage to the clamping tooth part 13 and the connecting gear 14, so as to reduce the service life of the oil pumping device, and the setting of the protection frame 26 of the utility model can avoid the situation that the piston 2 continues to move backward after the oil pushing spring is compressed to the limit length, so as to avoid the damage of the oil pushing spring 8 and the damage of the clamping tooth part 13 and the connecting gear 14.

[0057] Preferably, the protective frame 26 comprises symmetrically shaped vertical plates 30 and a horizontal plate 29 arranged between the two vertical plates 30, the top column 27 is arranged on the upper surface of the horizontal plate 29, the rope collecting wheel 3 is located between the symmetrically shaped vertical plates 30 and below the horizontal plate 29, and the horizontal plate 29 is attached to the rope collecting wheel 3, the horizontal plate 29 is provided with a clearance groove 31, one side of the rope collecting wheel 3 is exposed outside the clearance groove 31, a back plate 32 is vertically arranged between the symmetrically shaped vertical plates 30, the back plate 32 is attached to one side of the rope collecting wheel 3, the back plate 32 is provided with a waist-shaped hole 33, and the rotating rod 23 passes through the waist-shaped hole 33; the horizontal plate 29 is attached to the rope collecting wheel 3, so that the protective frame 26 can be smoothly installed at the bottom of the fixed cover 21, and one side of the rope collecting wheel 3 is exposed outside the clearance groove 31 on the horizontal plate 29, so that the horizontal plate 29 does not affect the normal rotation of the rope collecting wheel 3, and the protective frame 26 and the rope collecting wheel 3 are not fixedly connected, the rope collecting wheel 3 can normally rotate relative to the protective frame 26, and the back plate 32 vertically arranged between the two vertical plates 30 is attached to one side of the rope collecting wheel 3, so as to effectively limit the movement of the protective frame 26 relative to the rope collecting wheel 3, thereby ensuring that the top column 27 on the horizontal plate 29 can be located below the top groove 28 at any time, and the rotating rod 23 passes through the waist-shaped hole 33 on the back plate 32. The arrangement of the waist-shaped hole 33 enables the protective frame 26 to move upward smoothly.

[0058] Preferably, the fixed cover 21 is provided with a bearing hole 34, the drive gear 40 is located in the bearing hole 34, a rotating bearing 35 is arranged in the bearing hole 34, the rotating bearing 35 is sleeved on the drive gear 40, the inner wall of the bearing hole 34 is provided with a limiting table 36, the drive gear 40 is provided with a mounting table 37, the two ends of the rotating bearing 35 are respectively in abutment with the limiting table 36 and the mounting table 37, the middle part of the upper surface of the piston 2 is provided with a connecting part 38, the connecting part 38 is provided with a connecting hole 39, and one end of the pull rope 4 is arranged in the connecting hole 39 and fixedly connected with the connecting part 38; the bearing hole 34 of the fixed cover 21 has the rotating bearing 35, and the rotating bearing 35 is sleeved on the drive gear 40, which can avoid the direct contact between the drive gear 40 and the inner wall of the bearing hole 34, and the arrangement of the rotating bearing 35 can greatly reduce the friction generated after the rotation of the drive gear 40, thereby reducing the wear of the drive gear 40, increasing the service life of the drive gear 40, and the two ends of the rotating bearing 35 are respectively in abutment with the limiting table 36 on the inner wall of the bearing hole 34 and the mounting table 37 on the drive gear 40, thereby limiting the rotating bearing 35 from being separated from the bearing hole 34, and one end of the pull rope 4 is arranged in the connecting hole 39 of the connecting part 38 and fixedly connected with the connecting part 38, thereby making the connection between the pull rope 4 and the piston 2 more stable and firm.

[0059] The above embodiment is only a preferred embodiment of the utility model, and does not limit the protection scope of the utility model, so that: all equivalent changes made according to the structure, shape, principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A novel grease gun's extraction device, comprising a mounting cover (1) directly or indirectly connected to the grease gun barrel, an extraction mechanism disposed on the mounting cover (1), and a piston (2) connected to the extraction mechanism, wherein the extraction mechanism can drive the piston (2) to move rearward along the inner wall of the grease gun barrel, characterized in that: The pumping oil mechanism includes a rope winding wheel (3) mounted on the mounting cover (1), a pulling rope (4) arranged between the rope winding wheel (3) and the piston (2), and a driving device (5) for controlling the rotation of the rope winding wheel (3). Both ends of the pulling rope (4) are respectively connected to the rope winding wheel (3) and the piston (2). Driving the driving device (5) can drive the rope winding wheel (3) to rotate. The rotation of the rope winding wheel (3) can drive the pulling rope (4) to move backward and wind the pulling rope (4) onto the rope winding wheel (3). The backward movement of the pulling rope (4) can drive the piston (2) to move backward, thereby pumping butter into the butter gun barrel.

2. A novel oil pumping device for butter churn according to claim 1, wherein: A gear part (6) is provided on one side of the rope winding wheel (3). The driving device (5) includes a driving gear (40) and a driving part (7) connected to the driving gear (40). The driving gear (40) meshes with the gear part (6), and the top end of the driving part (7) is exposed outside the mounting cover (1).

3. A novel oil pumping device for butter churn according to claim 2, wherein: A pushing oil spring (8) is provided between the mounting cover (1) and the piston (2). Both ends of the pushing oil spring (8) are respectively abutted against the lower surface of the mounting cover (1) and the piston (2). A ratchet ring (9) is provided on the mounting cover (1). A clamping table (10) is inclinedly provided on the driving part (7). The ratchet ring (9) is sleeved on the driving part (7), and a clamping part (11) is provided on the ratchet ring (9). The clamping part (11) is clamped with the clamping table (10), so that the driving part (7) can only rotate in one direction.

4. A new oil pumping device for butter churn according to any one of claims 2-3, characterized in that: A linkage cavity (12) is formed hollow in the driving gear (40). A clamping tooth part (13) is provided on the inner wall of the linkage cavity (12). The driving part (7) is movably arranged in the linkage cavity (12). A linkage gear (14) meshing with the clamping tooth part (13) is provided on the driving part (7). A driving handle (15) is rotatably provided at the top end of the driving part (7). A rotating groove (16) is opened at the front end of the driving handle (15). The shape of the rotating groove (16) is "凵" shaped. The top end of the driving part (7) is located in the rotating groove (16) and is rotatably connected to the driving handle (15). After controlling the driving handle (15) to rotate, the front end of the driving handle (15) abuts against the upper surface of the mounting cover (1), thereby pulling the driving part (7) to move upward. At this time, the linkage gear (14) disengages from the clamping tooth part (13), and the linkage gear (14) and the driving gear (40) are in a clutch state.

5. A novel oil pumping device for butter churn according to claim 4, wherein: An installation hole (17) is opened at the top end of the driving part (7). A rotating shaft (18) is provided in the installation hole (17). Rotating holes (19) are opened on the inner walls on both sides of the rotating groove (16). Both ends of the rotating shaft (18) are respectively located in the rotating holes (int19) on both sides of the rotating groove (16).

6. A novel oil pumping device for butter churn according to claim 4, wherein: A return spring (20) is provided in the linkage cavity (12). The bottom end of the return spring (20) abuts against the linkage gear (14). Driving the driving part (7) to move upward can drive the linkage gear (14) to move upward synchronously. At this time, the linkage gear (14) compresses the return spring (20).

7. The oil pumping device of a new type butter gun according to claim 3, characterized in that: The installation cover (1) comprises a fixed cover (21) and a connecting cover (22), the bottom of the fixed cover (21) is provided with a rotating rod (23) in the transverse direction, the rope collecting wheel (3) is sleeved on the rotating rod (23), the inner wall of the fixed cover (21) is formed with an abutting table (24), the oil pushing spring (8) is located between the abutting table (24) and the piston (2), the two ends of the oil pushing spring (8) are respectively abutted with the abutting table (24) and the piston (2), and the top of the oil pushing spring (8) can be attached to the inner wall of the fixed cover (21), the connecting cover (22) is sleeved on the fixed cover (21), and the inner wall of the connecting cover (22) is provided with an internal thread (25).

8. A novel oil pumping device for butter churn according to claim 7, wherein: The bottom of the fixed cover (21) is movably provided with a protection frame (26), the protection frame (26) is located above the piston (2), and the distance between the bottom end of the protection frame (26) and the piston (2) is shorter than the distance between the rope collecting wheel (3) and the piston (2), the top end of the protection frame (26) is provided with a top column (27), the bottom end of the driving part (7) is provided with a top groove (28), and the top column (27) is located below the top groove (28).

9. The novel oil pumping device of a butter gun according to claim 8, characterized in that: The protection frame (26) comprises symmetrically formed vertical plates (30) and a horizontal plate (29) arranged between the two vertical plates (30), the top column (27) is arranged on the upper surface of the horizontal plate (29), the rope collecting wheel (3) is located between the symmetrically formed vertical plates (30) and below the horizontal plate (29), and the horizontal plate (29) is attached to the rope collecting wheel (3), a gap channel (31) is formed in the horizontal plate (29), one side of the rope collecting wheel (3) is exposed outside the gap channel (31), a back plate (32) is vertically arranged between the symmetrically formed vertical plates (30), the back plate (32) is attached to one side of the rope collecting wheel (3), a waist-shaped hole (33) is formed in the back plate (32), and the rotating rod (23) passes through the waist-shaped hole (33).

10. The oil pumping device of a new type of grease gun according to claim 7, characterized in that: A bearing hole (34) is formed in the fixed cover (21), the driving gear (40) is located in the bearing hole (34), a rotating bearing (35) is arranged in the bearing hole (34), the rotating bearing (35) is sleeved on the driving gear (40), the inner wall of the bearing hole (34) is provided with a limiting table (36), the driving gear (40) is provided with a mounting table (37), the two ends of the rotating bearing (35) are respectively abutted with the limiting table (36) and the mounting table (37), a connecting part (38) is arranged on the upper surface of the piston (2), a connecting hole (39) is formed in the connecting part (38), and one end of the pull rope (4) is arranged in the connecting hole (39) and fixedly connected with the connecting part (38).

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