Grease gun

Abstract

The invention relates to a grease gun, and relates to the technical field of grease injection equipment, the grease gun comprises a grease storage barrel and a hand-push pressing rod arranged at the bottom of the grease storage barrel, the upper end of the grease storage barrel is provided with a grease outlet part and a handle, and the grease outlet part of the grease storage barrel is provided with an extension device; the extending device comprises an oil conveying hose in threaded connection to the oil outlet part, threaded connectors used for threaded connection are arranged at the two ends of the oil conveying hose, and the end, away from the oil outlet part, of the oil conveying hose is sequentially connected with a rotating assembly, a connecting part and a clamping piece. The oil injection device has the effects that multi-angle free adjustment can be conducted, the oil injection device can stretch into an oil injection position with a narrow space to be rapidly clamped and connected with an oil nozzle, and practicability and butt joint convenience of the oil injection device and needed oil injection equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of oil injection equipment, and in particular to a grease gun. Background Art

[0002] A grease gun is a tool used for lubrication, usually used to apply butter or grease to the lubrication points of mechanical equipment. Its design usually includes a container for storing grease and a nozzle that can be operated manually or electrically to inject grease into the desired location by pressing a handle or trigger. Provide the necessary lubrication for machine parts to reduce friction and wear and extend the service life of the equipment.

[0003] For example, in the existing Chinese patent with the publication number CN216556418U, a flat nozzle of a grease gun is disclosed, which includes a connecting seat, a flat nozzle body mounted on the connecting seat, and a flat nozzle sleeve sleeved outside the flat nozzle body, the flat nozzle body is hollow and forms a grease channel, a sealing component is matched inside the flat nozzle body, a pressing component is arranged on the connecting seat, and the pressing component includes a handle hinged on the connecting seat, a connecting piece matched on the handle, and a pressing spring. Through the above-mentioned prior art, the pressing handle moves the flat nozzle sleeve axially upward through the connecting piece to expose the flat nozzle body for clamping or loosening the grease nozzle.

[0004] However, the above prior art has the following technical defects: During use of the above-mentioned prior art, the handle is pressed, one end of the handle is pressed down, and the other end is lifted up and the flat nozzle sleeve is moved axially upward through the connecting piece. The movement of the flat nozzle sleeve causes one end of the flat nozzle body to be exposed for clamping the oil nozzle. After clamping, the handle is released, and the flat nozzle sleeve moves down under the action of the restoring force of the pressing spring and re-wraps the flat nozzle body to complete the clamping and retraction. After the above-mentioned device completes the clamping and docking with the oil nozzle, the overall structure composed of the connecting seat, the flat nozzle body, and the flat nozzle sleeve sleeved outside the flat nozzle body is straight-cylindrical, which is difficult to bend and adjust the angle. It is only suitable for places where the oil filling position is in a spacious space and provides a single oil outlet. The positions where different machines and equipment require oil filling are different. When the required oil filling position is in a small space, the above-mentioned device cannot flexibly extend into the oil filling position to dock with the oil nozzle.

[0005] Secondly, although the above device can achieve docking with the oil nozzle at a specific narrow position by bending the oil hose to a certain extent, the long-term bending and twisting of the oil hose can easily cause damage to the oil hose, resulting in a reduction in its service life, an increase in the number of replacements, and an increase in the cost of use.

[0006] Based on this, on the basis of the existing grease gun flat nozzle, in order to overcome the above-mentioned technical defects, there is still room for improvement. Summary of the invention

[0007] In order to enable free adjustment at multiple angles, facilitate insertion into narrow oil filling locations and quick clamping connection with the oil nozzle, thereby improving practicality and convenience of docking with required oil filling equipment, the present application provides a grease gun.

[0008] The present application provides a grease gun, which adopts the following technical solution: A grease gun, comprising an oil storage cylinder and a hand-pushing rod arranged at the bottom of the oil storage cylinder, an oil outlet and a handle are arranged at the upper end of the oil storage cylinder, and an extension device is arranged on the oil outlet of the oil storage cylinder; The extension device comprises an oil delivery hose threadedly connected to the oil outlet, both ends of the oil delivery hose are provided with threaded joints for threaded connection, and one end of the oil delivery hose away from the oil outlet is sequentially connected with a rotating assembly, a connecting part and a clamping piece.

[0009] Preferably, the rotating assembly comprises a positioning seat bolt threadedly connected to the end of the oil delivery hose away from the oil outlet, and the end of the positioning seat bolt away from the oil delivery hose is provided with a connecting round ball through a circular kit to limit rotation.

[0010] Preferably, the circular kit has a transfer cavity for limiting the installation of the connecting ball, and the end of the circular kit away from the positioning seat bolt is provided with an external interface that is connected to the transfer cavity but limits the connecting ball from escaping from the transfer cavity, and the positioning seat bolt is provided with an inner circular hole that is connected to the oil delivery hose and the transfer cavity.

[0011] Preferably, a connecting round bead located at the outer interface of the circular sleeve is connected to a connecting rod, and the connecting rod has a threaded adapter at one end away from the circular sleeve. Both the connecting round bead and the connecting rod are penetrated by a circular through hole connected to the inner circular hole.

[0012] Preferably, the connecting portion comprises a hexagonal connecting column threadedly connected to a threaded transition portion of the connecting rod, an end of the hexagonal connecting column away from the connecting rod is threadedly transitioned with a transmission tube, and an end of the transmission tube away from the hexagonal connecting column has a threaded connecting portion.

[0013] Preferably, the clamping part includes an outer rod seat arranged at the end of the threaded connection part of the transmission tube through an inner column core, the inner column core is slid up and down in the inner cavity of the outer rod seat, the outer rod seat is provided with a U-shaped opening for one end of the transmission tube to extend into and be threadedly connected to the inner column core, and the inner column core is threaded with an inner concave threaded hole adapted to the threaded connection part.

[0014] Preferably, a through-hole column connected to the inner concave threaded hole is installed at the lower end of the inner column core, an outer drive rod penetrating the end of the outer rod seat and extending upward is installed at the upper end of the inner column core, and a round rod hole for the outer drive rod to penetrate is opened at the upper end of the outer rod seat.

[0015] Preferably, a driving rod is provided on the outer driving rod located above the outer rod seat through a plug pin, an external connection hole is penetrated through the outer driving rod extension portion for inserting and installing the plug pin, and a reset spring is sleeved on the outer driving rod located in the inner cavity of the outer rod seat.

[0016] Preferably, the bottom end circumference of the inscribed column core is provided with a plurality of petal locking pieces surrounding the through-hole column, and the inner side wall of the outer sleeve rod seat is provided with inclined abutment grooves for the plurality of petal locking pieces to expand.

[0017] Preferably, an equipment oil nozzle is connected to the bottom of the outer sleeve rod seat through a plurality of petal locking pieces for limiting locking.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: The threaded joints at both ends of the oil delivery hose can be easily disassembled and assembled, and the rotating components, connecting parts and clamping parts can be disassembled and assembled, so that after refueling at the oil filling point of the machine equipment, the components can be disassembled to clean the impurities inside, avoiding blockage inside the components due to long-term use. After the components are disassembled, the space occupied during storage can be reduced.

[0019] After the rotating assembly, the connecting part and the clamping part are assembled and connected to one end of the oil delivery hose in sequence, the transmission pipe can be driven to tilt at a certain angle through the action of the connecting ball connection, so that the internal column core in the outer rod seat can be clamped and docked with the oil nozzle of the equipment at different angles.

[0020] By pressing one end of the driving rod downward, the inner column core can be driven by the outer driving rod to move up a certain distance inside the outer rod seat, so that the multiple petal locking pieces move up to the inclined abutment groove, and then the outer rod seat is pressed downward to make the upper end of the equipment oil nozzle enter the outer rod seat, the multiple petal locking pieces expand, and the equipment oil nozzle enters between the multiple petal locking pieces. Then the driving rod is released, and the inner column core and the multiple petal locking pieces are driven downward and reset under the action of the reset spring, so that the multiple petal locking pieces can buckle and lock the upper end of the equipment oil nozzle, thereby achieving the purpose of card connection and docking with the equipment oil nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the extension device of the present invention.

[0023] Figure 3 The rotating assembly of the present invention explodes Figure 1 .

[0024] Figure 4 The rotating assembly of the present invention explodes Figure 2 .

[0025] Figure 5 It is a schematic diagram of the connecting rod of the present invention.

[0026] Figure 6 The explosion of the connection part of the present invention Figure 1 .

[0027] Figure 7 The explosion of the connection part of the present invention Figure 2 .

[0028] Figure 8 The present invention is a cross-sectional explosion Figure 1 .

[0029] Fig. 9 The present invention is a cross-sectional explosion Figure 2 .

[0030] Fig.10 It is a schematic diagram of the regulating component of the present invention.

[0031] Fig.11 It is an exploded cross-sectional view of the regulating assembly of the present invention.

[0032] Fig.12 It is a schematic diagram of the control component of the present invention.

[0033] Fig.13 It is an exploded view of some components of the control panel of the present invention.

[0034] Fig.14 It is a cross-sectional exploded view of the angle adjuster of the present invention (viewed from bottom to top).

[0035] Explanation of the reference numerals: 1. Oil storage cylinder; 11. Hand-pushed pressure rod; 12. Oil outlet; 13. Handle; 2. Extension device; 21. Oil delivery hose; 22. Threaded joint; 3. Rotating assembly; 4. Connecting part; 5. Snap-on part; 31. Positioning seat bolt; 32. Round kit; 33. Connecting ball; 321. Adapter cavity; 322. External interface; 311. Internal round hole; 34. Connecting rod; 341. Threaded adapter; 331. Round through hole; 41. Hexagonal connecting column; 42. Transmission pipe; 421. Threaded connecting part; 51. Internal column core; 52. Outer rod seat; 521. U-shaped mouth; 511. Inner concave threaded hole; 53. Through-hole column; 54. External drive rod; 522. Round rod hole; 55. Connecting pin ; 56. driving rod; 541. external hole; 57. reset spring; 58. flap lock piece; 523. inclined abutment groove; 59. equipment nozzle; 6. adjustment assembly; 61. convex pipe fitting; 62. adjustment ball; 512. access groove; 611. docking hole; 63. locking ring; 7. adjustment control; 71. base sleeve; 711. middle groove; 72. adjustment ring; 73. control lock block; 712. rectangular embedded groove; 74. upper abutment spring; 75. locking block; 721. locking hole; 8. angle adjuster; 81. connecting block; 82. rectangular sleeve rod; 83. transmission ring; 84. control rod; 85. cross lock block; 841. cross groove; 86. push-out spring; 821. positioning slot. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-Figure 14 This application is described in further detail.

[0037] The embodiment of the present application discloses a grease gun, which can be freely adjusted at multiple angles, is convenient for reaching into a narrow oiling position and quickly clamping and connecting with an oil nozzle, thereby improving practicality and convenience of docking with required oiling equipment.

[0038] Reference Figure 1 and Figure 2 As shown, the present application provides a grease gun, including an oil storage barrel 1 and a hand-pushing lever 11 arranged at the bottom of the oil storage barrel 1. An oil outlet 12 and a handle 13 are arranged at the upper end of the oil storage barrel 1. Before use, butter or grease for lubrication is first injected into the oil storage barrel 1, and the butter or grease in the oil storage barrel 1 can be discharged outward through the oil outlet 12 by pushing the hand-pushing lever 11 and pressing the handle 13. An extension device 2 is arranged on the oil outlet 12 of the oil storage barrel 1; it is used to accurately inject the butter or grease discharged through the oil outlet 12 into the lubrication point of the mechanical equipment.

[0039] The extension device 2 includes an oil delivery hose 21 threadedly connected to the oil outlet 12, and both ends of the oil delivery hose 21 have threaded joints 22 for threaded connection. The end of the oil delivery hose 21 away from the oil outlet 12 is connected with a rotating component 3, a connecting part 4 and a clamping part 5 in sequence. When assembling in use, one end of the oil delivery hose 21 is threadedly connected to the oil outlet 12, and the other end of the oil delivery hose 21 is assembled and connected with the rotating component 3, the connecting part 4 and the clamping part 5 in sequence, wherein the clamping part 5 can be clamped and connected with the oil nozzle installed on the oil filling point of the mechanical equipment, so that the butter or grease in the oil storage cylinder 1 is transported to the oil delivery hose 21 through the oil outlet 12, and then injected into the lubrication point of the mechanical equipment through the rotating component 3, the connecting part 4 and the clamping part 5 in sequence.

[0040] The oil delivery hose 21, the rotating assembly 3, the connecting part 4 and the clamping part 5 can be quickly disassembled and assembled. After the oil filling is completed, the components can be quickly disassembled to facilitate cleaning inside the components to prevent blockage after long-term use and prevent butter or grease from flowing smoothly. When not in use, the components can be disassembled to reduce the space occupied by storage.

[0041] Reference Figure 3 and Figure 4 As shown, specifically, the rotating assembly 3 includes a positioning seat bolt 31 threadedly connected to the end of the oil delivery hose 21 away from the oil outlet 12, and the end of the positioning seat bolt 31 away from the oil delivery hose 21 is limited and rotated by a circular sleeve 32 and is provided with a connecting ball 33. The circular sleeve 32 and the positioning seat bolt 31 are fixedly connected.

[0042] The circular sleeve 32 has a transfer cavity 321 for the limited installation of the connecting ball 33, and an external interface 322 is provided at one end of the circular sleeve 32 away from the positioning seat bolt 31, which is connected to the transfer cavity 321 but limits the connecting ball 33 from being separated from the transfer cavity 321. When the connecting ball 33 is subjected to force, it can be limitedly rotated in the transfer cavity 321, and under the action of the external interface 322, the external parts can be connected to the connecting ball 33 through the external interface 322; because the aperture of the external interface 322 is smaller than the diameter of the connecting ball 33, the connecting ball 33 cannot be separated from the circular sleeve 32 through the external interface 322. The positioning seat bolt 31 has an inner circular hole 311 connected to the oil delivery hose 21 and the transfer cavity 321, so that when the handle 13 is pressed, the butter or grease in the oil storage cylinder 1 enters the transfer cavity 321 through the oil delivery hose 21 and the inner circular hole 311.

[0043] Reference Figure 5As shown, the connecting ball 33 located at the outer interface 322 of the circular sleeve 32 is connected to the connecting rod 34, and the end of the connecting rod 34 away from the circular sleeve 32 has a threaded adapter 341, and the connecting ball 33 and the connecting rod 34 are penetrated with a round hole 331 connected to the inner hole 311. It should be noted that the connecting rod 34 and the connecting ball 33 are fixedly connected. Due to the arrangement of the connecting ball 33 and the outer interface 322, the connecting rod 34 can drive the connecting ball 33 to synchronously rotate at a certain angle when subjected to force. The butter or grease entering the adapter cavity 321 can enter the connecting rod 34 through the round hole 331.

[0044] Reference Figure 6 As shown, in order to enable the rotating assembly 3 to communicate with the clamping member 5 and to adjust the tilt at a certain angle, the connecting portion 4 includes a hexagonal connecting column 41 that is threadedly connected to the threaded transition portion 341 of the connecting rod 34, and the end of the hexagonal connecting column 41 away from the connecting rod 34 is threadedly transitioned with a transmission tube 42, and the end of the transmission tube 42 away from the hexagonal connecting column 41 has a threaded connection portion 421. The inner cavities of the connecting rod 34, the hexagonal connecting column 41 and the transmission tube 42 are in a connected state, and the butter or grease entering the connecting rod 34 can flow into the inner cavities of the hexagonal connecting column 41 and the transmission tube 42 in sequence.

[0045] At this time, the connecting ball 33, the connecting rod 34, the hexagonal connecting column 41 and the transmission tube 42 are connected as a whole, and under the action of the connecting ball 33, a driving force is applied to the transmission tube 42, so that the transmission tube 42 can be rotated at a certain angle.

[0046] Reference Figure 7 As shown, since it is necessary to be connected with the mechanical oil injection point by a clamping connection, and the butter or grease delivered to the transmission pipe 42 can be continuously input to the lubrication point of the mechanical equipment, the clamping member 5 includes an outer rod seat 52 arranged at the end of the threaded connection part 421 of the transmission pipe 42 through an inner column core 51, and the inner column core 51 and the transmission pipe 42 are threadedly connected; the inner column core 51 is slidably arranged in the inner cavity of the outer rod seat 52, and a U-shaped opening 521 for one end of the transmission pipe 42 to extend into and threadedly connect with the inner column core 51 is provided on the outer rod seat 52, and a concave threaded hole 511 adapted to the threaded connection part 421 is threadedly provided on the inner column core 51. The inner column core 51 is located in the inner cavity of the outer rod seat 52, and when connected, the end of the threaded connection part 421 of the transmission pipe 42 is extended into the U-shaped opening 521, and can be threadedly connected with the inner column core 51 in cooperation with the concave threaded hole 511, so that the outer rod seat 52 is installed at one end of the transmission pipe 42.

[0047] Reference Figure 8As shown, considering the need to connect and dock with the mechanical oil nozzle, a through-hole column 53 connected to the inner concave threaded hole 511 is installed at the lower end of the internal column core 51, and an outer drive rod 54 penetrating the end of the outer rod seat 52 and extending upward is installed at the upper end of the internal column core 51. The through-hole column 53, the internal column core 51 and the outer drive rod 54 are fixedly connected; and due to the threaded connection between the internal column core 51 and the transmission tube 42, the butter or grease in the transmission tube 42 can continue to flow into the through-hole column 53. A round rod hole 522 is provided at the upper end of the outer rod seat 52 for the outer drive rod 54 to penetrate. When the outer drive rod 54 is subjected to force, it can drive the internal column core 51 to slide up and down a certain distance in the inner cavity of the outer rod seat 52.

[0048] Continue to refer to Figure 8 As shown, in order to drive the inner column core 51, a driving rod 56 is connected to the outer driving rod 54 located above the outer rod seat 52 through a plug pin 55, and an outer hole 541 for the plug pin 55 to be inserted and installed is provided through the extended part of the outer driving rod 54, and a reset spring 57 is sleeved on the outer driving rod 54 located in the inner cavity of the outer rod seat 52. One end of the reset spring 57 abuts against the inner top wall of the outer rod seat 52, and the other end abuts against the upper end of the inner column core 51. The reset spring 57 always has a driving force to push the inner column core 51 downward; by pressing one end of the driving rod 56 downward, the outer driving rod 54 can drive the inner column core 51 to move upward a certain distance under the drive of the plug pin 55, and the reset spring 57 is compressed. When the driving rod 56 is released, the outer driving rod 54 and the inner column core 51 are reset downward under the drive of the reset spring 57.

[0049] Reference Fig. 9 As shown, since it is necessary to lock the through-hole column 53 with the mechanical oil nozzle to inject butter or grease into the lubrication point of the mechanical equipment, in this embodiment, the bottom circumference of the inscribed column core 51 is preferably provided with four petal locking pieces 58 surrounding the through-hole column 53, and the inner wall of the outer rod seat 52 is provided with an inclined abutment groove 523 for the four petal locking pieces 58 to expand.

[0050] The bottom of the outer sleeve rod seat 52 is locked and connected with a device oil nozzle 59 through four flap lock pieces 58. The device oil nozzle 59 is also a nozzle installed at the lubrication point of the mechanical equipment for docking. Butter or grease can be injected into the mechanical equipment where lubrication is required through the oil nozzle.

[0051] When docking with the equipment nozzle 59 on the machine, first press one end of the driving rod 56 downward to drive the inner column core 51 to move up and drive the four petal lock pieces 58 to move up to the inclined groove 523, then press the outer rod seat 52 to make the upper end of the equipment nozzle 59 enter the outer rod seat 52, and under the resistance of the inclined surface of the upper end of the equipment nozzle 59, the four petal lock pieces 58 can be driven to expand, and the upper end of the equipment nozzle 59 enters between the four petal lock pieces 58, and finally release the driving rod 56. Driven by the reset spring 57, the inner column core 51 and the four petal lock pieces 58 move down and reset, and the four petal lock pieces 58 return to the lower end opening of the outer rod seat 52. The four petal lock pieces 58 will gather and embrace the end of the equipment nozzle 59, thereby achieving the purpose of locking and docking with the mechanical equipment nozzle 59. Pressing the handle 13 can continuously add butter or grease to the lubrication part of the mechanical equipment.

[0052] Under the action of the connecting ball 33, the transmission tube 42 can be adjusted to a certain angle, so that the outer sleeve rod seat 52 at the end of the transmission tube 42 can be connected with the equipment oil nozzle 59 at different angles and in narrow spaces.

[0053] Reference Fig.10 and Fig.11 As shown, based on the first embodiment, considering that different machines are limited by space areas, the equipment nozzles 59 are not necessarily installed vertically, and inclined equipment nozzles 59 are often encountered. In order to be able to change the connection method between the inner column core 51 and the transmission pipe 42, the outer sleeve rod seat 52 can be freely adjusted after being connected to the transmission pipe 42 through the inner column core 51, so as to facilitate docking with the inclined equipment nozzle 59, an adjustment component is provided between the transmission pipe 42 and the outer sleeve rod seat 52. 6. The adjustment component 6 includes a convex pipe fitting 61 which is threadedly connected to the end of the threaded connection portion 421 of the transmission tube 42, an adjusting ball 62 is fixedly installed on one end of the convex pipe fitting 61, an access groove 512 which is connected to the through-hole column 53 for the adjusting ball 62 to extend into is provided on the inscribed column core 51, a docking hole 611 which is connected to the transmission tube 42 and the access groove 512 is provided on the convex pipe fitting 61 and the adjusting ball 62, and a locking ring 63 which is fixedly covered at the access groove 512 of the inscribed column core 51 to limit the adjusting ball 62.

[0054] Through the connection between the convex pipe 61 and the adjusting ball 62, the inscribed column core 51 in this embodiment can be freely adjusted at various angles at the end of the transmission tube 42, and the angle offset of the transmission tube 42 can be adjusted in cooperation with the connecting ball 33, so as to further increase the adjustable angle range of the outer rod seat 52. The transmission tube 42 and the outer rod seat 52 are also provided with an adjustment control 7, which is used to adjust the angle of the outer rod seat 52 in multiple directions and then lock it.

[0055] Reference Fig.12and Fig.13 As shown, considering the need to further adjust the angle of the outer rod seat 52 in multiple directions so as to facilitate docking with the equipment oil nozzle 59 at different inclination angles, the adjustment control unit 7 includes a base sleeve 71 fixedly mounted on the transmission pipe 42, the base sleeve 71 has a middle groove 711, an adjustment ring 72 is rotatably mounted at the middle groove 711 of the base sleeve 71, a regulating lock block 73 is embedded and installed at the middle groove 711 of the base sleeve 71, the base sleeve 71 is provided with a rectangular embedding groove 712 which is connected to the middle groove 711 for the installation of the regulating lock block 73, an upper spring sheet 74 is provided in the rectangular embedding groove 712, the upper spring sheet 74 is always in contact with the bottom of the regulating lock block 73, and has a driving force to push the regulating lock block 73 to slide out of the rectangular embedding groove 712.

[0056] A locking block 75 is fixedly mounted on the regulating lock block 73, and a plurality of locking holes 721 adapted to the locking block 75 are provided on the adjusting ring 72. When the regulating lock block 73 is pressed downward, the regulating lock block 73 slides into the rectangular embedded groove 712. When the locking block 75 is disengaged from the locking hole 721 on the adjusting ring 72, the adjusting ring 72 can be driven to rotate. After the regulating lock block 73 is released, the regulating lock block 73 is driven by the upper spring sheet 74 to move upward synchronously with the locking block 75. When the locking block 75 is inserted into the locking hole 721 on the adjusting ring 72, the adjusting ring 72 can be locked, and the adjusting ring 72 cannot rotate at this time. An angle adjuster 8 is provided on the adjusting ring 72 and the outer sleeve rod seat 52, which is used to adjust the inclination angle of the outer sleeve rod seat 52 at multiple angles.

[0057] Reference Figure 12 to Figure 14 As shown, in order to lock the angle after the outer rod seat 52 is adjusted, the angle adjuster 8 includes a rectangular sleeve rod 82 fixedly mounted on the adjustment ring 72 through a connecting block 81, a transmission ring 83 is fixedly sleeved on the outer rod seat 52 below the U-shaped opening 521, a control rod 84 is inserted and slidably mounted on the rectangular sleeve rod 82, and one end of the control rod 84 is hingedly arranged with the transmission ring 83, a cross lock block 85 is movably embedded on the control rod 84 located in the rectangular sleeve rod 82, a cross groove 841 is provided on the control rod 84 for the cross lock block 85 to be embedded and installed, an outward push spring 86 connected to the cross lock block 85 is installed in the cross groove 841, and the outward push spring 86 always has a driving force to push the cross lock block 85 to slide outward of the cross groove 841; and a plurality of positioning slots 821 adapted to the cross lock block 85 are equidistantly provided on the rectangular sleeve rod 82. When only the outward push spring 86 acts, the cross lock block 85 is just in the positioning slot 821 at a certain position. At this time, the control rod 84 cannot move.

[0058] When it is necessary to adjust the angle of the outer rod seat 52 in multiple directions, press the cross lock block 85 to make it enter the cross groove 841 and disengage from the positioning slot 821, push the control rod 84 to slide and cooperate with the transmission ring 83, so that the inclination angle of the outer rod seat 52 can be adjusted. Then, release the cross lock block 85, so that it is stuck in the positioning slot 821 under the action of the outward push spring 86, so that the control rod 84 cannot move, thereby achieving the effect of locking the adjusted angle of the outer rod seat 52. The adjusting lock block 73 is pressed to enter the rectangular embedded groove 712, so that the locking block 75 is separated from the locking hole 721 on the adjusting ring 72. At this time, the adjusting ring 72 is rotated to adjust the rotation angle of the outer rod seat 52. After adjusting to a suitable angle, the adjusting lock block 73 is released, and the locking block 75 is inserted into the locking hole 721 on the adjusting ring 72 under the drive of the upper spring sheet 74, thereby locking the rotation of the adjusting ring 72, that is, achieving the purpose of locking the outer rod seat 52 after the rotation adjustment. In conjunction with the adjustment of the offset angle of the transmission tube 42, the outer rod seat 52 can be adjusted in multiple directions, so that it can dock with the mechanical equipment oil nozzle 59 at the best angle.

[0059] The implementation principle of this embodiment is: (1) Assembly and filling: Before use, first thread one end of the oil hose 21 onto the oil outlet 12, and assemble and connect the rotating assembly 3, the connecting part 4 and the clamping part 5 in sequence on the other end of the oil hose 21, and then inject butter or grease for lubrication into the oil storage cylinder 1.

[0060] (2) Angle adjustment: Under the action of the connecting ball 33, the transmission tube 42 can be adjusted to a certain angle. According to the limitations of the actual on-site docking space, a driving force is applied to the transmission tube 42 so that the transmission tube 42 can be offset to a certain angle to adjust the angle of the outer sleeve rod seat 52 when entering the narrow space.

[0061] (3) Oil nozzle docking: When docking, press one end of the driving rod 56 downward to drive the inner column core 51 to move upward and drive the four petal locking pieces 58 to move upward to the inclined groove 523, then press the outer rod seat 52 to make the upper end of the equipment oil nozzle 59 enter the outer rod seat 52, then release the driving rod 56, the inner column core 51 and the four petal locking pieces 58 move downward and reset, and gather together to embrace the end of the equipment oil nozzle 59, so as to achieve locking docking with the mechanical equipment oil nozzle 59.

[0062] (4) Press and inject: Finally, press the handle 13 so that the butter or grease in the oil storage cylinder 1 is transported to the oil delivery hose 21 through the oil outlet 12, and then injected into the lubrication point of the mechanical equipment through the rotating component 3, the connecting part 4 and the clamping part 5 in sequence, thereby achieving the effect of continuously adding butter or grease to the lubrication point of the mechanical equipment.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A grease gun, comprising an oil storage cylinder (1) and a hand-pushing rod (11) arranged at the bottom of the oil storage cylinder (1), wherein the upper end of the oil storage cylinder (1) is provided with an oil outlet (12) and a handle (13), characterized in that: An extension device (2) is provided on the oil outlet portion (12) of the oil storage cylinder (1); The extension device (2) comprises an oil delivery hose (21) threadedly connected to the oil outlet portion (12), both ends of the oil delivery hose (21) having threaded joints (22) for threaded connection, and the end of the oil delivery hose (21) away from the oil outlet portion (12) is sequentially connected to a rotating assembly (3), a connecting portion (4) and a clamping member (5).

2. A grease gun according to claim 1, characterized in that: The rotating assembly (3) comprises a positioning seat bolt (31) threadedly connected to an end of the oil delivery hose (21) away from the oil outlet (12); the end of the positioning seat bolt (31) away from the oil delivery hose (21) is limited in rotation by a round sleeve (32) and is provided with a connecting round ball (33).

3. A grease gun according to claim 2, characterized in that: The circular sleeve (32) is provided with a transfer cavity (321) for limiting the installation of the connecting ball (33), and an end of the circular sleeve (32) away from the positioning seat bolt (31) is provided with an external interface (322) which is in communication with the transfer cavity (321) but limits the connecting ball (33) from being separated from the transfer cavity (321), and the positioning seat bolt (31) is provided with an inner circular hole (311) which is in communication with the oil delivery hose (21) and the transfer cavity (321).

4. A grease gun according to claim 3, characterized in that: A connecting ball (33) located at the outer interface (322) of the circular sleeve (32) is connected to a connecting rod (34); an end of the connecting rod (34) away from the circular sleeve (32) has a threaded adapter (341); and a circular through hole (331) communicating with the inner circular hole (311) is formed through the connecting ball (33) and the connecting rod (34).

5. A grease gun according to claim 4, characterized in that: The connecting portion (4) comprises a hexagonal connecting column (41) threadedly connected to a threaded transition portion (341) of the connecting rod (34); one end of the hexagonal connecting column (41) away from the connecting rod (34) is threadedly transitioned to a transmission tube (42); and one end of the transmission tube (42) away from the hexagonal connecting column (41) has a threaded connecting portion (421).

6. A grease gun according to claim 5, characterized in that: The clamping member (5) comprises an outer rod seat (52) which is arranged at the end of the threaded connection part (421) of the transmission tube (42) through an inner column core (51); the inner column core (51) is slidably arranged in the inner cavity of the outer rod seat (52) up and down; the outer rod seat (52) is provided with a U-shaped opening (521) for one end of the transmission tube (42) to extend into and be threadedly connected to the inner column core (51); and the inner column core (51) is threadedly provided with an inner concave threaded hole (511) adapted to the threaded connection part (421).

7. A grease gun according to claim 6, characterized in that: A through-hole column (53) connected to the inner concave threaded hole (511) is installed at the lower end of the inner column core (51), an outer drive rod (54) penetrating the end of the outer rod seat (52) and extending upward is installed at the upper end of the inner column core (51), and a round rod hole (522) for the outer drive rod (54) to penetrate is opened at the upper end of the outer rod seat (52).

8. A grease gun according to claim 7, characterized in that: A driving rod (56) is connected to an outer driving rod (54) located above the outer rod seat (52) via a plug pin (55); an external connection hole (541) is provided through the extended portion of the outer driving rod (54) for the plug pin (55) to be inserted and installed; and a return spring (57) is sleeved on the outer driving rod (54) located in the inner cavity of the outer rod seat (52).

9. A grease gun according to claim 7, characterized in that: The bottom circumference of the inscribed column core (51) is provided with a plurality of petal locking pieces (58) surrounding the through hole column (53), and the inner side wall of the outer sleeve rod seat (52) is provided with an inclined abutment groove (523) for the plurality of petal locking pieces (58) to expand.

10. A grease gun according to claim 9, characterized in that: An equipment oil nozzle (59) is located at the bottom of the outer sleeve rod seat (52) and is locked and connected to the bottom of the outer sleeve rod seat (52) through a plurality of locking pieces (58).

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