A kind of oil filling device and oil filling method

Abstract

The embodiment of the present application provides a kind of oil filling device and oil filling method, it is related to manufacturing tool field.The oil filling device includes locking piece, clamping piece, oil injection head and oil guide piece;Wherein, oil injection head is installed in oil groove, oil guide piece is contained in clamping piece and is communicated with oil injection head, clamping piece is used to clamp oil injection head, locking piece is sleeved on clamping piece and is used to lock clamping piece.The oil filling device is communicated with oil guide piece by installing oil injection head, and is used to prevent oil leakage during filling process.The clamping piece is used to clamp the oil injection head, and the locking piece is used to lock the clamping piece, which can ensure the position stability of the oil guide piece during the filling process, avoid shaking due to long filling operation time, and thus improve the convenience of oil filling operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of manufacturing tools, in particular to a grease filling device and a grease filling method. BACKGROUND

[0002] Large mechanical equipment is usually provided with an oil tank at a grease storage site to reserve sufficient space for manual filling of grease by workers, and the oil tank can also collect the grease missed during the filling process to avoid environmental pollution caused by overflow. However, the existing grease filling operation process has the problems of inconvenient operation and easy leakage. SUMMARY

[0003] The present application provides a grease filling device and a grease filling method, which can prevent grease leakage and improve operation convenience.

[0004] Embodiments of the present application can be implemented as follows:

[0005] The embodiments of the present application provide a grease filling device, which comprises:

[0006] a locking member, a clamping member, an oil filling head and an oil guide member;

[0007] The oil filling head is installed in the oil tank, the oil guide member is accommodated in the clamping member and is in communication with the oil filling head, the clamping member is used for clamping the oil filling head, and the locking member is sleeved on the clamping member and is used for locking the clamping member.

[0008] Optionally, the clamping member comprises a sliding plug, a clamping jaw and an elastic member, the sliding plug is slidably accommodated in the clamping member, the two ends of the elastic member are connected with the sliding plug and the clamping jaw respectively, the clamping jaw is hinged to the sliding plug, and the clamping jaw is used to keep a clamping state under the action of the elastic member.

[0009] Optionally, an hinge slot is formed in one end of the sliding plug close to the oil filling head, the hinge slot extends along the axial direction of the sliding plug, at least part of the clamping jaw is accommodated in the hinge slot, a pin hole is formed in the side wall of the hinge slot, and the clamping jaw is hinged to the pin hole through a rotating pin.

[0010] Optionally, the locking member comprises an outer cylinder and a first lock driving block, one end of the outer cylinder close to the oil filling head is open, and the other end is provided with a through hole; the clamping member further comprises a sliding rod, the sliding rod is connected to one end of the sliding plug away from the clamping jaw, the sliding rod is accommodated in the through hole, the first lock driving block is screw-coupled with the sliding rod, the inner end wall of the outer cylinder is used for abutting against the end surface of the sliding plug away from the clamping jaw, and the inner side wall of the outer cylinder is used for abutting against the clamping jaw.

[0011] Optionally, the locking member further comprises a locking block arranged on the inner side wall of the outer cylinder at the end away from the driving locking block, and the locking block is used for abutting against the clamping jaw.

[0012] Optionally, the side wall of the outer cylinder is provided with a first limiting groove extending along the axial direction of the outer cylinder, and the side wall of the sliding plug is provided with a guide block accommodated in the first limiting groove.

[0013] And / or, the side wall of the outer cylinder is provided with a second limiting groove extending along the axial direction of the outer cylinder, and the side wall of the sliding plug is provided with a handle accommodated in the first limiting groove and protruding out of the outer cylinder.

[0014] Optionally, the oil injection head comprises a mounting portion, a positioning portion and a guide portion communicated in sequence, the outer diameter of the positioning portion is smaller than the outer diameters of the mounting portion and the guide portion, the clamping member is used for clamping the positioning portion, and the guide portion is used for guiding the clamping member.

[0015] Optionally, the oil injection head further comprises a sealing ball used for sealing the opening of the guide portion at the end away from the positioning portion, and the oil guide member is used for abutting against the sealing ball and communicating with the positioning portion.

[0016] Optionally, the oil guide member comprises an abutting portion and a transmission portion communicated with each other, the abutting portion is sleeved on the oil injection head and communicates with the oil injection head, the clamping member further comprises a second driving locking block, and the transmission portion is accommodated in the clamping member and is screw-coupled with the second driving locking block.

[0017] Embodiments of the present application further provide an oil filling method applied to the oil filling device, and the oil filling method comprises the following steps:

[0018] Controlling the oil injection head to be mounted in the oil tank.

[0019] Controlling the clamping member to clamp the oil injection head.

[0020] Controlling the locking member to lock the clamping member.

[0021] Controlling the oil guide member to communicate with the oil injection head to perform the filling operation.

[0022] The oil filling device and the oil filling method of the embodiments of the present application have the following advantages, for example:

[0023] The oil filling device comprises a locking member, a clamping member, an oil filling head and an oil guide member; the oil filling head is installed on an oil tank, the oil guide member is accommodated in the clamping member and is in communication with the oil filling head, the clamping member is used for clamping the oil filling head, and the locking member is sleeved on the clamping member and is used for locking the clamping member. The oil filling device is provided with the oil filling head and the oil guide member in communication, which is used for preventing oil leakage during filling. The clamping member is used for clamping the oil filling head, and the locking member is used for locking the clamping member, so that the position stability of the oil guide member during filling can be ensured, and shaking due to long filling operation time can be avoided, thereby improving the convenience of oil filling operation. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 The structure diagram of the oil filling device provided in the embodiments of the present application is shown.

[0026] Figure 2 The structure diagram of one end of the sliding plug connecting clamping jaw provided in the embodiments of the present application is shown.

[0027] Figure 3 The end structure diagram of the abutting part provided in the embodiments of the present application is shown.

[0028] Figure: 100-oil filling device; 110-clamping member; 111-sliding plug; 1111-hinge groove; 1112-pin hole; 1113-guide block; 1114-handle; 112-clamping jaw; 113-elastic member; 114-second driving lock block; 115-sliding rod; 120-locking member; 121-outer cylinder; 1211-first limiting groove; 1212-second limiting groove; 122-first driving lock block; 123-locking block; 130-oil filling head; 131-mounting part; 132-positioning part; 133-guiding part; 134-sealing ball; 140-oil guide member; 141-abutting part; 1411-outer boss; 1412-inner boss; 1413-oil outlet hole; 1414-sealing ring; 1415-center needle; 142-transmission part. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0032] In the description of the present application, it should be noted that, if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] The terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article or device comprising the element.

[0035] Unless otherwise defined, the terms of "arrangement", "connection" and the like are to be construed in a broad sense and for example, "connection" can be fixed connection, detachable connection or integral connection; can be mechanical connection, electrical connection; can be direct connection or indirect connection through intermediate medium; can be internal connection of two elements. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0036] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0037] Please refer to Figures 1-3 The oil filling device 100 and the oil filling method provided in the embodiments of the present application can solve the above problems, which will be described in detail as follows.

[0038] The oil filling device 100 comprises a locking member 120, a clamping member 110, an oil filling head 130 and an oil guide member 140; wherein the oil filling head 130 is installed on an oil tank, the oil guide member 140 is accommodated in the clamping member 110 and communicates with the oil filling head 130, the clamping member 110 is used for clamping the oil filling head 130, and the locking member 120 is sleeved on the clamping member 110 and is used for locking the clamping member 110.

[0039] The oil filling device 100 is used for preventing oil leakage during filling by installing the oil filling head 130 and communicating with the oil guide member 140. The clamping member is used for clamping the oil filling head 130, and the locking member 120 is used for locking the clamping member, so as to ensure the position stability of the oil guide member 140 during filling, avoid shaking due to too long filling operation time, and thus improve the convenience of oil filling operation.

[0040] Reference Figure 1 The clamping member 110 comprises a sliding plug 111, a clamping jaw 112 and an elastic member 113. The sliding plug 111 is slidably accommodated in the clamping member 110. The two ends of the elastic member 113 are respectively connected with the sliding plug 111 and the clamping jaw 112. The clamping jaw 112 is hinged to the sliding plug 111, and the clamping jaw 112 is used to keep the clamping state under the action of the elastic member 113.

[0041] After the oil filling head 130 is installed, the sliding plug 111 is moved to drive the clamping jaw 112 to move towards the oil filling head 130. The oil filling head 130 can play a guiding role in the process of contacting the clamping jaw 112, and compress the elastic member 113. The clamping jaw 112 can be held at a suitable position on the oil filling head 130 under the elastic tension of the elastic member 113, thereby realizing coarse positioning.

[0042] It is worth noting that the number of clamping jaws 112 is at least two, thereby facilitating clamping on the oil injection head 130. In the embodiment, the number of clamping jaws 112 is three, and the three clamping jaws 112 are symmetrically arranged about the center of the sliding plug 111, which helps to ensure clamping stability.

[0043] Referring to Figure 1 and Figure 2 , the sliding plug 111 is provided with a hinge groove 1111 at one end close to the oil injection head 130, the hinge groove 1111 extends along the axial direction of the sliding plug 111, at least part of the clamping jaw 112 is accommodated in the hinge groove 1111, and the side wall of the hinge groove 1111 is provided with a pin hole 1112, which is hinged with the clamping jaw 112 through a rotating pin.

[0044] Specifically, the hinge groove 1111 is in a long strip shape, so that the clamping jaw 112 also moves in the hinge groove 1111 during rotation, thereby preventing the clamping jaw 112 from being deflected due to excessive clamping force or external force. In addition, the number of hinge grooves 1111 is consistent with the number of clamping jaws 112, thereby ensuring that each clamping jaw 112 is prevented from being deflected and limited.

[0045] Referring to Figure 1 , the locking member 120 includes an outer cylinder 121 and a first drive locking block 122, the outer cylinder 121 is open at one end close to the oil injection head 130, and the other end is provided with a through hole; the clamping member 110 further includes a sliding rod 115, the sliding rod 115 is connected to one end of the sliding plug 111 away from the clamping jaw 112, the sliding rod 115 is accommodated in the through hole, the first drive locking block 122 is screw-connected with the sliding rod 115, the inner end wall of the outer cylinder 121 is used to abut against the end surface of the sliding plug 111 away from the clamping jaw 112, and the inner side wall of the outer cylinder 121 is used to abut against the clamping jaw 112.

[0046] During use, the outer cylinder 121 is arranged outside the sliding plug 111, which is used to guide the sliding of the sliding plug 111. Before the clamping jaw 112 is clamped on the oil injection head 130, the outer cylinder 121 is first made close to the oil injection head 130, then the outer cylinder 121 is fixed, and then the first drive locking block 122 is screwed, so that the rotary motion is converted into linear motion through screw connection, thereby driving the sliding plug 111 and the clamping jaw 112 to approach the oil injection head 130 until the clamping jaw 112 is clamped on the oil injection head 130. When it is needed to separate the clamping jaw 112 and the oil injection head 130, the first drive locking block 122 is screwed in the opposite direction, thereby driving the sliding plug 111 and the clamping jaw 112 away from the oil injection head 130. The inner end wall of the outer cylinder 121 close to the first drive locking block 122 can abut against the sliding plug 111, thereby preventing the sliding plug 111 from sliding out.

[0047] It should be noted that the first drive lock block 122 can be screwed first, so that the clamping jaw 112 extends out of the outer cylinder 121, and then the outer cylinder 121 is moved synchronously to hold the clamping jaw 112 on the oil filling head 130; then the first drive lock block 122 is screwed again under the condition that the sliding plug 111 is fixed, so that the outer cylinder 121 moves towards the oil filling head 130 and is sleeved outside the clamping jaw 112 to lock the clamping jaw 112, improve the clamping stability, and further ensure the reliability of the filling operation.

[0048] That is, in actual operation, the outer cylinder 121 can be moved together with the sliding plug 111 (it is necessary to ensure that the clamping jaw 112 is located outside the outer cylinder 121), so that the clamping jaw 112 clamps the oil filling head 130, and then the outer cylinder 121 is moved to lock the clamping jaw 112; or the sliding plug 111 can be moved alone (before moving, the clamping jaw 112 can be located inside the outer cylinder 121), so that the clamping jaw 112 extends out of the outer cylinder 121 and then clamps the oil filling head 130, and then the outer cylinder 121 is moved to lock the clamping jaw 112.

[0049] Reference Figure 1 In order to further improve the locking effect of the clamping jaw 112, the locking piece 120 can further include a locking block 123, which is arranged on the inner side wall of the outer cylinder 121 away from the drive lock block. The locking block 123 is used to abut against the clamping jaw 112.

[0050] Reference Figure 1 The side wall of the outer cylinder 121 is provided with a first limiting groove 1211 extending along the axial direction of the outer cylinder 121, and the side wall of the sliding plug 111 is provided with a guide block 1113 accommodated in the first limiting groove 1211. Through the cooperation of the guide block 1113 and the first limiting groove 1211, on the one hand, the movement of the sliding plug 111 can be guided, and on the other hand, the sliding plug 111 can be limited to avoid easy relative rotation of the sliding plug 111 relative to the outer cylinder 121.

[0051] In addition, the side wall of the outer cylinder 121 is provided with a second limiting groove 1212 extending along the axial direction of the outer cylinder 121, and the side wall of the sliding plug 111 is provided with a handle 1114 accommodated in the first limiting groove 1211 and protruding out of the outer cylinder 121. Through the cooperation of the handle 1114 and the second limiting groove 1212, the functions of guiding and circumferential limiting can also be achieved, and it is also convenient to directly apply force through the handle 1114 to achieve the effect of power assistance.

[0052] Reference Figure 1The oiling head 130 comprises a mounting portion 131, a positioning portion 132 and a guiding portion 133 connected in sequence, the outer diameter of the positioning portion 132 is smaller than the outer diameter of the mounting portion 131 and the outer diameter of the guiding portion 133, the clamping member 110 is used for clamping the positioning portion 132, and the guiding portion 133 is used for guiding the clamping member 110.

[0053] Specifically, the mounting portion 131 is used for mounting the oil groove, and can be customized according to the size of the oil groove. The positioning portion 132 is used for cooperating with the clamping jaw 112 in the clamping member 110, and the guiding portion 133 is used for guiding the clamping jaw 112. The clamping jaw 112 will first contact the guiding portion 133 in the process of approaching the oiling head 130.

[0054] In the embodiment, the guiding portion 133 has a structure of thick in the middle and thin at both ends, and the side wall from the end of the guiding portion 133 to the middle position is designed to be inclined, which facilitates the separation of the clamping jaw 112 so that the clamping jaw 112 enters the positioning portion 132 for clamping operation, or moves away from the positioning portion 132 for taking out after the operation is completed.

[0055] Reference Figure 1 The oiling head 130 further comprises a sealing ball 134, which is used for sealing the opening of the end of the guiding portion 133 away from the positioning portion 132, and the oil guiding member 140 is used for abutting against the sealing ball 134 and communicating with the positioning portion 132.

[0056] Before the grease is filled, the sealing ball 134 can seal and block the end opening of the guiding portion 133, so as to prevent impurities from mixing in. When the grease is filled, the oil guiding member 140 pushes open the sealing ball 134 to communicate with the inner cavity of the guiding portion 133.

[0057] Meanwhile, in order to ensure that the pushed open sealing ball 134 can be reset after the grease filling operation, a spring can be connected between the sealing ball 134 and the guiding portion 133.

[0058] Specifically, the oil guiding member 140 comprises an abutting portion 141 and a transmission portion 142 connected in sequence, the abutting portion 141 is sleeved on the oiling head 130 and communicates with the oiling head 130, the clamping member 110 further comprises a second driving block 114, and the transmission portion 142 is accommodated in the clamping member 110 and screw-coupled with the second driving block 114, so that the motion conversion between the rotary motion and the linear motion can be realized through the screw coupling.

[0059] Reference Figure 3The resisting part 141 is in a " " annular structure, the upper end of the " " is used for communication with the transmission part 142, and the annular edge of the lower end of the " " is provided with an outer boss 1411, which is convenient for being sleeved on the outer side of the guide part 133, and the annular middle position of the lower end of the " " is provided with an inner boss 1412, the center of the inner boss 1412 is provided with a center thimble 1415 for opening the sealing ball 134, and the outer boss 1411 is provided with an oil outlet hole 1413 around the center thimble 1415 on the inner boss 1412, which is used for realizing communication with the guide part 133 and supplying oil.

[0060] The resisting part 141 is limited by the outer shape structure, and the relative position stability of the two is higher when communicating with the guide part 133, and the reliability of the oil filling operation is further ensured.

[0061] The embodiment of the application also provides an oil filling method applied to the oil filling device 100, and the oil filling method comprises the following steps:

[0062] Step S100: control the oil injection head 130 to be installed on the oil tank; specifically, the installation part 131 is connected and fixed with the oil tank.

[0063] Step S200: control the clamping part 110 to clamp the oil injection head 130; specifically, the sliding plug 111 can drive the clamping jaw 112 to clamp the positioning part 132 in the oil injection head 130.

[0064] Step S300: control the locking part 120 to lock the clamping part 110; specifically, the relative movement of the outer cylinder 121 and the sliding plug 111 can make the locking block 123 abut against the outer side of the clamping jaw 112.

[0065] Step S400: control the oil part to communicate with the oil injection head 130 to perform the filling operation; specifically, the oil guide part 140 is controlled to be close to the oil injection head 130, the sealing ball 134 is opened at the same time when the resisting part 141 is sleeved on the guide part 133, the communication between the resisting part 141 and the guide part 133 is realized, and then the oil filling operation is performed.

[0066] As described above, the oil filling device and the oil filling method provided by the embodiment of the application at least have the following advantages:

[0067] (1) The oil leakage during the filling process can be avoided by the setting of the oil injection head 130, and the position stability during the filling process is ensured by the clamping part and the locking part 120, the shaking is avoided, and the convenience of the filling operation is improved;

[0068] (2), the guide part 133 can be sealed by sealing the ball 134, to prevent the presence of impurities mixed before clamping and locking affect the purity of the grease;

[0069] (3), the guide part 133 can be sealed by sealing the ball 134, to prevent the presence of impurities mixed before clamping and locking affect the purity of the grease;

[0070] (4), by the first drive lock block 122 and the screw cooperation of the sliding rod 115, and the screw cooperation of the second drive lock block 114 and the transmission part 142, on the basis of as far as possible to reduce the shaking, realize the conversion of rotary motion and linear motion, help to ensure the reliability of the whole filling device;

[0071] (5), the grease filling method can be through the specific operation steps in the basis of ensuring the reliability and stability of the operation, reduce the labor intensity and labor time, as far as possible to improve the efficiency of filling.

[0072] The above, only for the specific embodiments of the present application, but the scope of protection of the present application is not limited to this, any skilled in the art of the technical personnel in the technical range of the present application disclosed, can easily think of changes or replacement, should be covered in the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the protection scope of the claims.

Claims

1. A grease filling device, characterized by The utility model relates to an oil injection device, including: Clamping part (110), locking part (120), oil injection head (130) and oil guide (140); Wherein, the oil injection head (130) is installed in the oil groove, the oil guide (140) is contained in the clamping part (110) and is communicated with the oil injection head (130), the clamping part (110) is used to clamp the oil injection head (130), the locking part (120) is sleeved on the clamping part (110) and is used to lock the clamping part (110); The clamping part (110) includes sliding plug (111), clamping jaw (112) and elastic part (113), the sliding plug (111) is slidably contained in the clamping part (110), the both ends of the elastic part (113) are connected with the sliding plug (111) and the clamping jaw (112) respectively, the clamping jaw (112) is hinged to the sliding plug (111), and the clamping jaw (112) is used to keep the clamping state under the action of the elastic part (113); The end of the sliding plug (111) close to the oil injection head (130) is provided with a hinge groove (1111), the hinge groove (1111) extends along the axial direction of the sliding plug (111), at least part of the clamping jaw (112) is contained in the hinge groove (1111), the side wall of the hinge groove (1111) is provided with a pin hole (1112), and the pin hole (1112) is hinged to the clamping jaw (112) through a rotating pin; The locking part (120) includes an outer cylinder (121) and a first drive locking block (122), the end of the outer cylinder (121) close to the oil injection head (130) is open, and the other end is provided with a through hole; The clamping part (110) further includes a sliding rod (115), the sliding rod (115) is connected to the end of the sliding plug (111) away from the clamping jaw (112), the sliding rod (115) is contained in the through hole, the first drive locking block (122) is screwed with the sliding rod (115), the inner end wall of the outer cylinder (121) is used to abut against the end face of the sliding plug (111) away from the clamping jaw (112), and the inner side wall of the outer cylinder (121) is used to abut against the clamping jaw (112).

2. The oil filling device according to claim 1, characterized by The locking part (120) further includes a locking block (123), the locking block (123) is arranged on the inner side wall of the end of the outer cylinder (121) away from the drive locking block, and the locking block (123) is used to abut against the clamping jaw (112).

3. The oil filling device according to claim 1, characterized by The side wall of the outer cylinder (121) is provided with a first limiting groove (1211), the first limiting groove (1211) extends along the axial direction of the outer cylinder (121), and the side wall of the sliding plug (111) is provided with a guide block (1113), the guide block (1113) is contained in the first limiting groove (1211). And / or, the side wall of the outer cylinder (121) is provided with a second limiting groove (1212), the second limiting groove (1212) extends along the axial direction of the outer cylinder (121), the side wall of the sliding plug (111) is provided with a handle (1114), the handle (1114) is accommodated in the first limiting groove (1211) and protrudes from the outer cylinder (121).

4. The oil filling device according to any one of claims 1 to 3, characterized in that The oil injection head (130) is sequentially communicated with the mounting portion (131), the positioning portion (132) and the guide portion (133), the outer diameter of the positioning portion (132) is smaller than the outer diameters of the mounting portion (131) and the guide portion (133), the clamping piece (110) is used for clamping the positioning portion (132), and the guide portion (133) is used for guiding the clamping piece (110).

5. The oil filling device according to claim 4, characterized by The oil injection head (130) further comprises a sealing ball (134), the sealing ball (134) is used for sealing an opening at one end of the guide portion (133) away from the positioning portion (132), and the oil guide (140) is used for abutting against the sealing ball (134) and communicating with the positioning portion (132).

6. The oil filling device according to any one of claims 1 to 3, characterized in that The oil guide (140) comprises an abutting portion (141) and a transmission portion (142) in communication, the abutting portion (141) is sleeved on the oil injection head (130) and communicates with the oil injection head (130), the clamping piece (110) further comprises a second driving lock block (114), and the transmission portion (142) is accommodated in the clamping piece (110) and is screw-connected with the second driving lock block (114).

7. A method of oil filling, characterized by The oil injection method is applied to the oil injection device in any one of claims 1-6, and the oil injection method comprises: Controlling the oil injection head (130) to be installed in an oil tank; Controlling the clamping piece (110) to clamp the oil injection head (130); Controlling the locking piece (120) to lock the clamping piece (110); Controlling the oil guide (140) to communicate with the oil injection head (130) to perform an oil injection operation.

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