Oil injector taking-out device and using method thereof

Abstract

The invention discloses an oil injector taking-out device and a using method thereof.The oil injector taking-out device comprises a connecting column, an elastic piece and an inserting piece used for being matched with an oil hole in an inserted mode, the connecting column comprises a first connecting section used for being inserted into a shell, and the inserting piece is slidably connected with the first connecting section; the sliding direction of the plug connector relative to the first connecting section intersects with the length direction of the connecting column, and the elastic piece is used for applying elastic force to the plug connector so that the plug connector tends to slide in the direction away from the first connecting section. According to the fuel injector taking-out device, stable connection between the connecting column and the fuel injector can be achieved through the fuel hole in the fuel injector shell, so that the fuel injector can be taken out without disassembling accessories such as a rocker arm chamber and a rocker arm, maintenance and calibration of the fuel injector are achieved, the maintenance cost is reduced, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fuel injector disassembly tools, and in particular to a fuel injector removal device and a use method thereof. Background Art

[0002] The SD32 bulldozer is equipped with a Cummins engine. After the engine has been working for a period of time, the injector needs to be removed for inspection and calibration. When removing the injector, the rocker chamber, rocker arm and other accessories need to be removed before the injector can be taken out. There are many parts to be removed, the workload is large, it is time-consuming and labor-intensive, and the maintenance efficiency is low. After the rocker chamber is removed, its upper and lower seals need to be replaced, which increases the maintenance cost and is prone to leakage. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes an injector removal device, which utilizes the oil hole on the injector housing to achieve a stable connection between the connecting column and the injector, so that the injector can be removed without disassembling accessories such as the rocker arm chamber and the rocker arm, so as to achieve maintenance and calibration of the injector, reduce maintenance costs, and improve maintenance efficiency.

[0005] The injector removal device of the embodiment of the present invention comprises a connecting column, an elastic member and a connector for plugging and cooperating with the oil hole, wherein the connecting column comprises a first connecting section for inserting into the housing, the connector is slidably connected to the first connecting section, the sliding direction of the connector relative to the first connecting section intersects with the length direction of the connecting column, and the elastic member is used to apply elastic force to the connector so that the connector tends to slide in a direction away from the first connecting section.

[0006] In some embodiments, the oil hole is arranged to penetrate the shell in a radial direction to form a first oil hole and a second oil hole arranged oppositely on the shell; the number of the connectors is multiple, at least one connector is a first connector, and at least one connector is a second connector, and the first connector and the second connector are symmetrically arranged on both sides of the center line of the connecting column so that the first connector and the second connector can be inserted into the first oil hole and the second oil hole respectively.

[0007] In some embodiments, a sliding direction of the connector relative to the first connecting section is perpendicular to a length direction of the connecting column.

[0008] In some embodiments, the elastic member is a spring, and the spring is arranged between the first connector and the second connector, and two ends of the spring are respectively stopped at the first connector and the second connector.

[0009] In some embodiments, the first connecting section has a receiving groove, and the first connector and the second connector can be slidably disposed in the receiving groove; the injector removal device also includes a control component for driving at least one of the first connector and the second connector to slide into the receiving groove.

[0010] In some embodiments, the connecting column further includes a second connecting section, the first connecting section and the second connecting section are respectively arranged at two ends of the connecting column, and the control component includes a traction rope, and the first end of the traction rope is arranged at the second connecting section;

[0011] The second end of the traction rope is connected to the first connector, so that the first connector is driven to slide into the receiving groove by pulling the second end of the traction rope; and / or

[0012] The second end of the traction rope is connected to the second connector, so that the second connector is driven to slide into the accommodating groove by pulling the second end of the traction rope.

[0013] In some embodiments, the second connecting section has a guide groove, and the control assembly also includes a control rod slidably disposed in the guide groove, the first end of the traction rope is connected to the control rod, and the guide groove has a limiting surface for stopping the control rod, and the limiting surface is arranged on a side of the control rod close to the accommodating groove.

[0014] In some embodiments, the control rod has an installation groove, a stop rod is provided in the installation groove, the installation groove has a stop surface, one end of the stop rod is rotatably connected to the groove wall of the installation groove, and when the stop rod stops at the stop surface, the other end of the stop rod extends out of the installation groove.

[0015] In some embodiments, an elastic member is further provided in the installation groove, and the elastic member can apply elastic force to the stop rod so that the stop rod tends to rotate in the direction of stopping against the stop surface.

[0016] The method for using the fuel injector extraction device according to the embodiment of the present invention comprises the following steps:

[0017] Inserting the first connecting section of the connecting column into the housing;

[0018] The connecting column is adjusted to align the plug-in component with the oil hole, and the plug-in component is inserted into the oil hole under the elastic force of the elastic component;

[0019] Apply a pulling force to the connecting column to pull out the fuel injector.

[0020] The fuel injector removal device of the embodiment of the present invention utilizes the oil hole on the fuel injector housing to achieve a stable connection between the connecting column and the fuel injector, so that the fuel injector can be removed without disassembling accessories such as the rocker arm chamber and the rocker arm, so as to realize the inspection and calibration of the fuel injector, reduce the inspection cost, and improve the inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the explosion structure of the fuel injector in the present invention.

[0022] Figure 2 The figure is a schematic structural diagram of the connection between the fuel injector extraction device and the fuel injector according to one embodiment of the present invention.

[0023] Figure 3 It is a partial cross-sectional view of an injector extraction device according to an embodiment of the present invention.

[0024] Figure 4 It is a schematic structural diagram of an injector removal device according to another embodiment of the present invention.

[0025] Figure 5 It is a structural schematic diagram of another embodiment of the injector removal device of the present invention, in which the stop rod is located outside the guide groove.

[0026] Reference numerals:

[0027] 10. Injector removal device;

[0028] 1. Connecting column; 11. First connecting section; 111. Accommodating groove; 12. Second connecting section; 121. Guide groove; 13. Through hole;

[0029] 2. Elastic parts;

[0030] 3. Connector; 31. First connector; 32. Second connector;

[0031] 4. Control assembly; 411. First traction rope; 412. Second traction rope; 42. Guide roller; 43. Control rod; 431. Mounting groove; 432. Stop surface; 44. Stop rod; 45. Elastic member;

[0032] 20. Injector; 201. Housing; 2011. Oil hole; 202. Pressure plate; 203. Push rod; 204. Spring. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figure 1 and Figure 2As shown, the injector 20 includes a housing 201, a pressure plate 202, a push rod 203, a needle valve, a spring 204 and other components, wherein the housing 201 has a spring 204 cavity and an oil hole 2011, the spring 204 is arranged in the spring 204 cavity, the oil hole 2011 is arranged on the cavity wall of the spring 204 cavity, and the oil hole 2011 is arranged to penetrate along the radial direction of the housing 201 to form a first oil hole and a second oil hole arranged oppositely on the housing 201. When the engine is running, the oil in the valve chamber enters the spring 204 cavity through the first oil hole and the second oil hole, so as to achieve lubrication of the spring 204 and other components, and when the spring 204 is compressed, the oil in the spring 204 cavity is discharged through the first oil hole and the second oil hole.

[0035] like Figure 2 and Figure 3 As shown, the injector removal device 10 of the embodiment of the present invention includes a connecting column 1, an elastic member 2 and a connector 3 for plugging with the oil hole 2011. The connecting column 1 includes a first connecting section 11 for inserting into the housing 201. The connector 3 is slidably connected to the first connecting section 11. The sliding direction of the connector 3 relative to the first connecting section 11 intersects with the length direction of the connecting column 1. The elastic member 2 is used to apply elastic force to the connector 3 so that the connector 3 tends to slide in a direction away from the first connecting section 11.

[0036] The fuel injector extraction device 10 of the embodiment of the present invention is suitable for extracting the fuel injector 20. First, the pressure plate 202 is removed, and the push rod 203, the needle valve and the spring 204 are removed, so that the upper end of the housing 201 is exposed to the outside; then the first connecting section 11 of the connecting column 1 is inserted into the housing 201, and the position of the connecting column 1 is adjusted so that the plug-in component 3 is aligned with the oil hole 2011. The plug-in component 3 slides outward under the elastic force of the elastic component 2 and is inserted into the oil hole 2011, so that the connection between the connecting column 1 and the fuel injector 20 can be achieved; then, by applying a pulling force to the connecting column 1, the fuel injector 20 can be pulled out.

[0037] The injector removal device 10 of the embodiment of the present invention utilizes the oil hole 2011 on the housing 201 of the injector 20 to achieve a stable connection between the connecting column 1 and the injector 20, so that the injector 20 can be removed without disassembling accessories such as the rocker arm chamber and the rocker arm, so as to realize the maintenance and calibration of the injector 20, reduce the maintenance cost, and improve the maintenance efficiency.

[0038] like Figure 2 As shown, the connecting column 1 is cylindrical, and after the first connecting section 11 of the connecting column 1 is inserted into the housing 201 , the connecting column 1 and the housing 201 are coaxial.

[0039] In some embodiments, Figure 3As shown, there are multiple connectors 3, at least one connector 3 is a first connector 31, and at least one connector 3 is a second connector 32. The first connector 31 and the second connector 32 are symmetrically arranged on both sides of the center line of the connecting column 1 so that the first connector 31 and the second connector 32 can be inserted into the first oil hole and the second oil hole respectively.

[0040] The first connector 31 and the second connector 32 can be inserted into the first oil hole and the second oil hole respectively, so as to increase the connection stability between the connecting column 1 and the housing 201. When a pulling force is applied to the connecting column 1, the housing 201 is subjected to a more uniform force, which is more conducive to pulling out the injector 20 and can reduce the damage to the housing 201 caused by uneven force.

[0041] In some embodiments, the sliding direction of the connector 3 relative to the first connecting section 11 is perpendicular to the length direction of the connecting column 1 .

[0042] Through the above arrangement, the connector 3 slides radially along the connecting column 1. Since the first oil hole and the second oil hole are arranged radially through the shell 201, the connecting column 1 is inserted into the shell 201 and the positions of the first connector 31 and the second connector 32 are adjusted. When the first connector 31 is aligned with the first oil hole and the second connector 32 is aligned with the second oil hole, the first connector 31 can be inserted into the first oil hole along the axial diameter of the first oil hole, and the second connector 32 can be directly inserted into the second oil hole along the axis of the second oil hole, which is more conducive to the plug-in cooperation between the first connector 31 and the second connector 32 and the first oil hole and the second oil hole.

[0043] In some embodiments, Figure 3 As shown, the elastic member 2 is a spring 204 , which is arranged between the first connector 31 and the second connector 32 , and both ends of the spring 204 are respectively stopped at the first connector 31 and the second connector 32 .

[0044] The spring 204 can simultaneously apply elastic force to the first connector 31 and the second connector 32, so that the structure of the injector removal device 10 is simpler and the cost is lower.

[0045] As an example, Figure 3 As shown, the first connecting section 11 has a receiving groove 111 which is arranged radially through the connecting column 1, and the connector 3 is cylindrical. The connector 3 includes a plug-in portion and a blocking portion. The diameter of the plug-in portion matches the aperture of the oil hole 2011, and the diameter of the blocking portion is larger than the diameter of the plug-in portion, which can prevent the connector 3 from escaping from the receiving groove 111.

[0046] The first connector 31 and the second connector 32 are symmetrically arranged and can be slidably disposed in the accommodating groove 111, and the two ends of the elastic member 2 respectively stop at the first connector 31 and the second connector 32; when the connecting column 1 is inserted into the shell 201, the first connector 31 and the second connector 32 enter the accommodating groove 111 under the pressure of the inner wall of the shell 201, and when the first connector 31 is aligned with the first oil hole, the second connector 32 is also aligned with the second oil hole. At this time, under the action of the elastic member 2, the first connector 31 is inserted into the first oil hole, and the second connector 32 is inserted into the second oil hole, thereby realizing a stable connection between the removal device and the injector 20.

[0047] Optionally, when the first connector 31 is inserted into the first oil hole, the end surface of the first connector 31 away from the connecting column 1 does not protrude from the outer wall of the shell 201, and when the second connector 32 is inserted into the second oil hole, the end surface of the second connector 32 away from the connecting column 1 does not protrude from the outer wall of the shell 201.

[0048] Therefore, when the fuel injector 20 is pulled out, the first connector 31 and the second connector 32 can be prevented from colliding with other components outside the fuel injector 20 .

[0049] In some embodiments, the first connector 31 and the second connector 32 can be slidably disposed in the receiving groove 111 , and the injector removal device 10 further includes a control component 4 for driving at least one of the first connector 31 and the second connector 32 to slide into the receiving groove 111 .

[0050] During the process of inserting the connecting column 1 into the shell 201 and adjusting its position, the first connector 31 and the second connector 32 always stop against the inner wall of the shell 201 under the action of the elastic member 2. The friction between the first connector 31 and the second connector 32 and the inner wall of the shell 201 is relatively large, which can easily cause damage to the inner wall of the shell 201.

[0051] With the above arrangement, during the process of inserting the connecting column 1 into the housing 201, the first connector 31 and the second connector 32 can be slid into the receiving groove 111 by the control component 4, so that a gap is formed between the first connector 31 and the second connector 32 and the inner wall of the housing 201, thereby reducing damage to the inner wall of the housing 201.

[0052] In some embodiments, Figure 4As shown, the connecting column 1 also includes a second connecting section 12, the first connecting section 11 and the second connecting section 12 are respectively arranged at the two ends of the connecting column 1, and the control component 4 includes a traction rope, the first end of the traction rope is arranged at the second connecting section 12; the second end of the traction rope is connected to the first connector 31, so that the first connector 31 is driven to slide into the receiving groove 111 by pulling the second end of the traction rope; and / or the second end of the traction rope is connected to the second connector 32, so that the second connector 32 is driven to slide into the receiving groove 111 by pulling the second end of the traction rope.

[0053] By arranging the traction rope at the second connecting section 12 , it is easier for the operator to pull the traction rope, thereby driving the first connector 31 and / or the second connector 32 to slide into the receiving groove 111 to reduce the friction between the first connector 31 and the second connector 32 and the inner wall of the shell 201 .

[0054] Alternatively, if Figure 2 and Figure 4 As shown, the second connecting section 12 has a threaded section arranged away from the first connecting section 11 , and an external thread is provided on the threaded section.

[0055] Therefore, the second connecting section 12 can be connected to a tension structure (such as a puller, a hammer, etc.) through the threaded section, so as to apply tension to the connecting column 1.

[0056] As an example, Figure 4 As shown, there are two traction ropes, which are used to pull the first connector 31 and the second connector 32 respectively, and can simultaneously control the first connector 31 and the second connector 32. The traction rope connected to the first connector 31 is the first traction rope 411, and the traction rope connected to the second connector 32 is the second traction rope 412.

[0057] like Figure 4 As shown, the connecting column 1 has a through hole 13 extending along its axial direction, and the end of the through hole 13 is connected to the accommodating groove 111. The first traction rope 411 and the second traction rope 412 are both inserted into the through hole 13, and the first ends of the first traction rope 411 and the second traction rope 412 extend to the second connecting section 12; a guide roller 42 is provided in the accommodating groove 111, and the guide roller 42 is rotatably supported on the groove wall of the accommodating groove 111 through a bracket, and the guide roller 42 is arranged between the first connector 31 and the second connector 32. The first traction rope 411 and the second traction rope 412 are respectively wound around the guide roller 42 from both sides of the guide roller 42 to realize a 90-degree turn of the first traction rope 411 and the second traction rope 412, and the second end of the first traction rope 411 is fixedly connected to the end face of the first connector 31 facing the second connector 32, and the second end of the second traction rope 412 is fixedly connected to the end face of the second connector 32 facing the first connector 31.

[0058] Therefore, by pulling the first end of the first traction rope 411 and the second traction rope 412, the first connector 31 and the second connector 32 can be driven closer to each other and enter the accommodating groove 111, thereby reducing the friction between the first connector 31 and the second connector 32 and the inner wall of the shell 201 and reducing the wear on the shell 201.

[0059] In some embodiments, the second connecting section 12 has a guide groove 121, and the control component 4 also includes a control rod 43 slidably disposed in the guide groove 121, the first end of the traction rope is connected to the control rod 43, and the guide groove 121 has a limiting surface for stopping the control rod 43, and the limiting surface is arranged on the side of the control rod 43 close to the accommodating groove 111.

[0060] By setting the control rod 43, the convenience of the operator in pulling the traction rope can be improved; at the same time, when the first connector 31 and the second connector 32 are respectively inserted into the first oil hole and the second oil hole, the control rod 43 stops at the limiting surface, which can realize the limitation of the control rod 43, and then limit the position of the first connector 31 and the second connector 32, preventing the first connector 31 and the second connector 32 from protruding from the outer wall of the shell 201. In addition, the position of the traction rope can also be limited to prevent the traction rope from retracting to the through hole 13.

[0061] Optionally, both the first traction rope 411 and the second traction rope 412 are connected to the control rod 43 .

[0062] Therefore, the first connector 31 and the second connector 32 can be simultaneously controlled to slide into the receiving groove 111 by the control rod 43, thereby improving the convenience of operation.

[0063] Alternatively, if Figure 4 and Figure 4 As shown, the control rod 43 has a pull ring at one end away from the limiting surface. When the control rod 43 stops at the limiting surface, the pull ring and the control rod 43 both enter the guide groove 121.

[0064] Therefore, the operator can more conveniently pull the control rod 43 through the pull ring; in addition, the pull ring can enter the guide groove 121, which can prevent the pull ring from affecting the connection between the second connecting section 12 and the tension structure.

[0065] In some embodiments, Figure 4 and Figure 5 As shown, the control rod 43 has a mounting groove 431, a stop rod 44 is provided in the mounting groove 431, the mounting groove 431 has a stop surface 432, one end of the stop rod 44 is rotatably connected to the groove wall of the mounting groove 431, when the stop rod 44 stops at the stop surface 432, the other end of the stop rod 44 extends out of the mounting groove 431.

[0066] Through the above arrangement, before the connecting column 1 is inserted into the shell 201, the control rod 43 is pulled to make the stop rod 44 move to the outside of the connecting column 1, and then the stop rod 44 is rotated to make its other end extend out of the installation groove 431, and the other end of the stop rod 44 can stop at the outer side surface of the connecting column 1, preventing the control rod 43 from retracting into the guide groove 121, so that the first connector 31 and the second connector 32 can be maintained in the accommodating groove 111; at this time, the operator can insert the connecting column 1 into the shell 201, and adjust the position of the connecting column 1 so that the connector is roughly aligned with the oil hole 2011, and then the stop rod 44 can be rotated to enter the installation groove 431, and the first connector 31 and the second connector 32 stop at the inner wall of the shell 201 under the action of the elastic member 2, and the operator can slightly adjust the position of the connecting column 1, and the first connector 31 and the second connector 32 can be automatically inserted into the first oil hole and the second oil hole under the action of the elastic member 2. Therefore, in the process of inserting the connecting column 1 into the housing 201 and roughly aligning the connector 3 with the oil hole 2011 , the operator does not need to pull the control rod 43 all the time, and the operation is more convenient.

[0067] As an example, Figure 4 and Figure 5 As shown, the stop surface 432 is inclined relative to the length direction of the control rod 43. When the stop rod 44 stops at the stop surface 432, the stop rod 44 extends obliquely relative to the control rod 43, and the end of the stop rod 44 away from the control rod 43 can stop at the end surface of the second connecting section 12 to prevent the control rod 43 from retracting into the guide groove 121, thereby keeping the first connector 31 and the second connector 32 in the accommodating groove 111.

[0068] In some embodiments, an elastic member 45 is further disposed in the installation groove 431 , and the elastic member 45 can apply elastic force to the stop rod 44 so that the stop rod 44 tends to rotate in the direction of stopping against the stop surface 432 .

[0069] By setting the elastic member 45, after pulling the control rod 43 to move the stop rod 44 to the outside of the connecting column 1, the stop rod 44 can automatically rotate outward of the installation groove 431 and stop at the stop surface 432, without the operator manually rotating the stop rod 44, so the operation is more convenient.

[0070] As an example, Figure 4As shown, the stop rod 44 is connected to the groove wall of the installation groove 431 through a rotating shaft, and the elastic member 45 is a torsion spring, which is mounted on the rotating shaft. Under the action of the torsion spring, the stop rod 44 always has a tendency to rotate outward from the installation groove 431; when the control rod 43 retracts to the guide groove 121, the stop rod 44 stops at the groove wall of the guide groove 121, pulling the control rod 43 outward from the guide groove 121, and when the stop rod 44 is separated from the groove wall of the guide groove 121, the stop rod 44 automatically stops at the stop surface 432 under the action of the torsion spring.

[0071] The method for using the fuel injector extraction device 10 according to the embodiment of the present invention comprises the following steps:

[0072] Insert the first connecting section 11 of the connecting column 1 into the housing 201;

[0073] Adjust the connecting column 1 so that the connector 3 is aligned with the oil hole 2011, and the connector 3 is inserted into the oil hole 2011 under the elastic force of the elastic member 2;

[0074] A pulling force is applied to the connecting column 1 to pull out the housing 201 of the fuel injector 20 .

[0075] When the above method is used to remove the injector 20, first, the pressure plate 202 is removed, and the push rod 203, the needle valve and the spring 204 are removed, so that the upper end of the shell 201 is exposed to the outside; then the first connecting section 11 of the connecting column 1 is inserted into the shell 201, and the position of the connecting column 1 is adjusted so that the connector 3 is aligned with the oil hole 2011. The connector 3 slides outward under the elastic force of the elastic member 2 and is inserted into the oil hole 2011, so that the connection between the connecting column 1 and the injector 20 can be achieved; thereafter, the injector 20 can be pulled out by applying a pulling force to the connecting column 1.

[0076] The method of using the above-mentioned injector removal device 10 utilizes the oil hole 2011 on the housing 201 of the injector 20 to achieve a stable connection between the connecting column 1 and the injector 20, so that the injector 20 can be removed without disassembling the rocker arm chamber, rocker arm and other accessories, so as to realize the inspection and calibration of the injector 20, reduce the inspection cost and improve the inspection efficiency.

[0077] It should be noted that the explanation of the injector extraction device 10 in the above embodiment is also applicable to the method of use, and will not be repeated here.

[0078] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A fuel injector removal device (10), characterized in that: The fuel injector (20) comprises a housing (201), wherein the housing (201) has an oil hole (2011); the fuel injector removal device (10) comprises a connecting column (1), an elastic member (2) and a plug-in member (3) for plugging and matching with the oil hole (2011); the connecting column (1) comprises a first connecting section (11) for inserting into the housing (201); the plug-in member (3) is slidably connected to the first connecting section (11); the sliding direction of the plug-in member (3) relative to the first connecting section (11) intersects with the length direction of the connecting column (1); the elastic member (2) is used to apply elastic force to the plug-in member (3) so that the plug-in member (3) tends to slide in a direction away from the first connecting section (11).

2. The fuel injector extraction device (10) according to claim 1, characterized in that: The oil hole (2011) is arranged to penetrate the housing (201) in a radial direction to form a first oil hole and a second oil hole arranged oppositely on the housing (201); the number of the connectors (3) is multiple, at least one of the connectors (3) is a first connector (31), and at least one of the connectors (3) is a second connector (32); the first connector (31) and the second connector (32) are symmetrically arranged on both sides of the center line of the connecting column (1) so that the first connector (31) and the second connector (32) can be inserted into the first oil hole and the second oil hole respectively.

3. The fuel injector extraction device (10) according to claim 2, characterized in that: The sliding direction of the plug-in component (3) relative to the first connecting section (11) is perpendicular to the length direction of the connecting column (1).

4. The fuel injector extraction device (10) according to claim 2, characterized in that: The elastic member (2) is a spring (204), and the spring (204) is arranged between the first connector (31) and the second connector (32), and two ends of the spring (204) respectively abut against the first connector (31) and the second connector (32).

5. The fuel injector extraction device (10) according to claim 4, characterized in that: The first connecting section (11) has a receiving groove (111), and the first connector (31) and the second connector (32) are both slidably disposed in the receiving groove (111); the injector removal device (10) also includes a control component (4) for driving at least one of the first connector (31) and the second connector (32) to slide into the receiving groove (111).

6. The fuel injector extraction device (10) according to claim 5, characterized in that: The connecting column (1) further comprises a second connecting section (12), the first connecting section (11) and the second connecting section (12) are respectively arranged at two ends of the connecting column (1), the control component (4) comprises a traction rope, and the first end of the traction rope is arranged at the second connecting section (12); The second end of the traction rope is connected to the first connector (31), so that the first connector (31) is driven to slide into the receiving groove (111) by pulling the second end of the traction rope; and / or The second end of the traction rope is connected to the second connector (32) so that the second connector (32) is driven to slide into the accommodating groove (111) by pulling the second end of the traction rope.

7. The fuel injector extraction device (10) according to claim 6, characterized in that: The second connecting section (12) has a guide groove (121), and the control assembly (4) also includes a control rod (43) slidably arranged in the guide groove (121), the first end of the traction rope is connected to the control rod (43), and the guide groove (121) has a limiting surface for stopping the control rod (43), and the limiting surface is arranged on a side of the control rod (43) close to the accommodating groove (111).

8. The fuel injector extraction device (10) according to claim 7, characterized in that: The control rod (43) has a mounting groove (431), a stop rod (44) is arranged in the mounting groove (431), the mounting groove (431) has a stop surface (432), one end of the stop rod (44) is rotatably connected to the groove wall of the mounting groove (431), and when the stop rod (44) stops at the stop surface (432), the other end of the stop rod (44) protrudes from the mounting groove (431).

9. The fuel injector extraction device (10) according to claim 8, characterized in that: An elastic member (45) is also provided in the installation groove (431), and the elastic member (45) can exert elastic force on the stop rod (44) so ​​that the stop rod (44) tends to rotate in a direction to stop at the stop surface (432).

10. A method for using the injector extraction device (10) according to any one of claims 1 to 9, characterized in that: The following steps are involved: Inserting the first connecting section (11) of the connecting column (1) into the housing (201); The connecting column (1) is adjusted so that the plug-in component (3) is aligned with the oil hole (2011), and the plug-in component (3) is inserted into the oil hole (2011) under the elastic force of the elastic component (2); A pulling force is applied to the connecting column (1) to pull out the fuel injector (20).

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