A PT injector splitter sleeve disassembly device

Abstract

The present invention discloses a PT injector flow divider sleeve disassembly device, comprising: a mounting base plate, a left tightening device and a right tightening device fixed relatively to the mounting base plate at a certain distance, two movable tracks arranged in parallel between the left tightening device and the right tightening device, and a push plate slidably matched with the two movable tracks, a disassembly sleeve is centrally arranged on one side of the push plate, and two stop blocks are arranged on the other side which are sleeved on the two movable tracks and positioned by bolts, and a central through hole is arranged in the middle of the push plate. The present invention realizes the rapid and convenient disassembly and assembly of the injector and the sealing flow divider sleeve, has the advantages of simple structure, convenient disassembly and assembly, reliable operation, etc., and can effectively solve the problem of difficult operation of the injector sealing flow divider sleeve during installation and disassembly.

Description

Technical Field

[0001] The invention relates to a disassembly device, in particular to a disassembly device for a PT fuel injector flow divider sleeve. Background Art

[0002] PT injectors are often used in large engineering machinery engines, such as mining machinery. Due to the harsh working environment, the performance of the injector must be tested after a period of use. A set of devices matching the injector detection is required. It is crucial to ensure that the sealing splitter sleeve and the injector are well matched during the detection process. However, the installation and removal of the sealing splitter sleeve is very difficult. In the past, it has been made to match the injector by knocking or smashing. This method will cause considerable damage to the detection device and the injector itself, and is highly dependent on the operator's personal level and skills. Summary of the invention

[0003] The problem that the present invention aims to solve is to design a disassembly device based on the seal diverter sleeve of a Cummins PT injector, so as to disassemble or install the seal diverter sleeve of the injector in a more convenient and safe way.

[0004] In view of the above situation, the technical solution provided by the present invention is:

[0005] A PT injector flow divider sleeve disassembly device comprises: a mounting base plate, a left tightening device and a right tightening device fixed relatively to the mounting base plate at a certain distance, two movable tracks arranged in parallel between the left tightening device and the right tightening device, and a push plate slidably matched with the two movable tracks, a disassembly sleeve is centrally arranged on one side of the push plate, and two stop blocks are arranged on the other side which are sleeved on the two movable tracks and positioned by bolts, and a central through hole is arranged in the middle of the push plate.

[0006] Furthermore, the output end of the left tightening device is connected to a left push rod, the output end of the right tightening device is provided with a right push rod, and the left push rod and the right push rod are coaxially arranged.

[0007] Furthermore, circular holes identical to and slidably fitting with the two movable rails are opened at both ends of the push plate.

[0008] Furthermore, the diameter of the central through hole is larger than the maximum diameter of the left end push rod and smaller than the maximum diameter of the disassembly sleeve.

[0009] Furthermore, the left end push rod, the central through hole, and the disassembly sleeve are coaxially arranged.

[0010] Furthermore, the left and right tightening devices adopt a hydraulic cylinder, a cam linear motion mechanism or a screw nut linear motion mechanism that can output linear reciprocating motion.

[0011] Furthermore, the free end of the disassembly sleeve is tightly sleeved and fitted with the stepped end of the sealing diverter sleeve.

[0012] Furthermore, a groove is provided on a side of the push plate that contacts the disassembly sleeve, and the diameter of the groove matches the outer diameter of the disassembly sleeve, thereby ensuring that the two are coaxial.

[0013] Furthermore, it also includes a controller and several pressure sensors. The pressure sensor is arranged between the push plate and the contact surface of the disassembly sleeve and is electrically connected to the controller. The controller is electrically connected to the left tightening device and the right tightening device, and is used to control the two tightening devices to stop feeding when the pressure signal value obtained by the pressure sensor exceeds the set value.

[0014] Furthermore, the pressure sensor is a ceramic pressure sensor.

[0015] Compared with the prior art, the present invention realizes quick and convenient disassembly and assembly of the injector and the sealing diverter sleeve by installing the clamping position, has the advantages of simple structure, convenient disassembly and assembly, reliable operation, etc., and can effectively solve the problem of difficult operation during installation and disassembly of the sealing diverter sleeve of the injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the disassembly process of an embodiment of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the installation process of an embodiment of the present invention.

[0018] Figure 3 It is a half-section schematic diagram of the matching state of the contact surface between the baffle and the disassembly sleeve.

[0019] Figure 4 It is a half-section schematic diagram of the matching state of the injector and the sealing diverter sleeve.

[0020] In the figure: 1-installation base plate; 2-left jacking device; 3-movable track; 4-stop block; 5-push plate; 6-disassembly sleeve; 7-sealing diverter sleeve; 8-right jacking device; 9-right end push rod; 10-PT injector; 11-controller; 12-left end push rod; 13-pressure sensor; 14-oil inlet hole; 15-oil drain hole; 16-timing oil hole; 17-high-pressure oil pipe; 18-connector; 19-positioning surface; 20-timing oil chamber; 21-sealing wall; 22-oil drain chamber; 23-inclined wall; 24-oil inlet chamber. DETAILED DESCRIPTION

[0021] The purpose of the present invention is further described in detail below through specific examples. The examples cannot be repeated here one by one, but the implementation mode of the present invention is not limited to the following examples.

[0022] like Figure 1 to Figure 2 As shown, a PT injector flow divider sleeve disassembly device comprises: a mounting base plate 1, a left jacking device and a right jacking device fixed relatively to the mounting base plate 1 at a certain distance, two movable tracks 3 arranged in parallel between the left jacking device 2 and the right jacking device 8, and a push plate 5 slidably matched with the two movable tracks 3, the output end of the left jacking device 2 is connected with a left end push rod 12, the output end of the right jacking device 8 is provided with a right end push rod 9, and the left end push rod 12 and the right end push rod 9 are coaxially arranged, the left end push rod 12 and the right end push rod 9 can be tightly fitted with the two ends of the PT injector 10 to fix the PT injector 10; a disassembly sleeve 6 is centrally arranged on one side of the push plate 5, and two stop blocks 4 are arranged on the other side, which are sleeved on the two movable tracks 3 and positioned by bolts. The push plate 5 is provided with a central through hole in the middle, the diameter of which is larger than the maximum diameter of the left end push rod 12 and smaller than the maximum diameter of the disassembly sleeve 6. The two ends of the push plate 5 are provided with circular holes that are identical to and slidably fit the two moving rails 3, so that the push plate 5 can move on the two moving rails 3 and can be fixed at any time. The left end push rod 12, the central through hole, and the disassembly sleeve 6 are coaxially arranged. The free end of the disassembly sleeve 6 is tightly sleeved and fitted with the stepped end of the sealing diverter sleeve 7.

[0023] The left jacking device 2 and the right jacking device 8 adopt hydraulic cylinders that can output linear reciprocating motion. In another feasible embodiment, the left jacking device 2 and the right jacking device 8 can also adopt a cam linear motion mechanism or a screw nut linear motion mechanism.

[0024] In order to improve the reliability and safety of the device and prevent overload, the PT injector diverter sleeve disassembly device of this embodiment also includes a controller 11 and a plurality of pressure sensors 13. The pressure sensor 13 is a ceramic pressure sensor, which is arranged between the contact surface of the push plate 5 and the disassembly sleeve 6 and is electrically connected to the controller 11. The controller 11 is electrically connected to the left tightening device 2 and the right tightening device 8, and is used to control the two tightening devices to stop feeding when the pressure signal obtained by the pressure sensor 13.

[0025] Figure 3It is a half-section view of the contact surface between the baffle 5 and the disassembly sleeve 6. The diameter of the central opening of the baffle 5 is smaller than the maximum diameter of the disassembly sleeve 6. The side of the push plate 5 that contacts the disassembly sleeve 6 is provided with a groove. The diameter of the groove matches the outer diameter of the disassembly sleeve 6, thereby ensuring that the two are coaxial. In addition, several ceramic pressure sensors are placed between the disassembly sleeve 6 and the baffle 5 at the position shown in the figure. When the sealing diverter sleeve 7 is successfully installed or removed, the pressure on the ceramic pressure sensor will suddenly change, thereby generating a voltage mutation signal. The signal is transmitted to the controller 11 through a wire, and then the controller 11 sends a signal to the external test bench to disconnect the oil and power supply of the hydraulic thruster 4, thereby stopping the feed. A small hole is punched inside the baffle 5 for inserting a wire to connect the pressure sensor 13 and the controller 11.

[0026] Here is the Cummins PT injector as an example. Figure 4 The half-section diagram of the seal split sleeve 7 and the injector 10 in the state of cooperation when successfully installed includes an oil inlet hole 14, an oil drain hole 15, a timing oil hole 16, a high-pressure oil pipe 17, a joint 18, a positioning surface 19, a timing oil chamber 20, a sealing wall surface 21, an oil drain chamber 22, an inclined wall surface 23, and an oil inlet chamber 24. It can be seen that the contact surface structure of the two components is very complicated. In actual use and experiments, a large force is required for disassembly and installation, which is difficult or even impossible to complete by manpower. Therefore, this invention is designed to replace manpower to complete disassembly and installation. The entire device is powered and oiled by an external test bench, and the movement of each moving part is controlled.

[0027] The two processes of disassembling and installing the Cummins PT injector according to the present invention are described in detail below.

[0028] like Figure 1 The following is a disassembly process of a disassembly device based on the seal splitter sleeve of a Cummins PT injector:

[0029] At this time, the sealing diverter sleeve 7 is tightly installed on the PT injector 10. When disassembling, first turn on the power supply of the external test bench, introduce electricity and oil into the entire device, first adjust the left end push rod 12 so that the two ends of the PT injector 10 are tightly fitted with the left end push rod 12 and the right end push rod 9 and fixed. At this time, the large end of the PT injector 10 faces the left end push rod 12; the next step is to adjust the position of the stop block 4 to close the disassembly sleeve 6 with the sealing diverter sleeve 7 and the baffle 5 together, and tighten the bolts to fix the stop block 4 on the mounting track 3, and then adjust the left end push rod 12 and the right end push rod 9 to feed to the left synchronously. At this time, the sealing diverter sleeve 7 remains stationary under the obstruction of the disassembly sleeve 6, and the left end push rod 12 and the right end push rod 9 act with an axial force to make the PT injector 10 move relative to the disassembly sleeve 6, thereby acting on the axial force on the sealing diverter sleeve 7, pushing the PT injector 10 to separate from the sealing diverter sleeve 7.

[0030] like Figure 2 The following is a disassembly and installation process of the seal splitter sleeve of the Cummins PT injector:

[0031] First, turn on the power of the external test bench to introduce electricity and oil into the entire device; install the sealing diverter sleeve 7 and the disassembly sleeve 6 into the PT injector 10 in sequence. At this time, the sealing diverter sleeve 7 is not fully matched with the PT injector 10 and there is a certain gap; the next step is to adjust the left end push rod 12 and the right end push rod 9 to fix the PT injector 10. The axial installation direction of the PT injector 10 is opposite when disassembling; since the baffle 5 is directly fitted with the sealing diverter sleeve 7 and the axial force is directly applied, it will cause certain damage to the sealing diverter sleeve 7. Therefore, the disassembly sleeve 6 is used to fit closely with the baffle 5 and the sealing diverter sleeve 7 to transmit the axial force, and the baffle 5 itself The structure ensures that the two are coaxial; then slowly adjust the two push rods to feed to the left and indirectly apply an axial force on the PT injector 10, so that the PT injector 10 moves in the direction of tightly fitting with the sealing diverter sleeve 7 until it fits to Figure 4 status until the end.

[0032] The above examples of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A PT injector splitter sleeve disassembly device, characterized in that: include: A mounting base plate (1), a left top tightening device and a right top tightening device fixed relatively to the mounting base plate (1) at a certain distance, two movable rails (3) arranged in parallel between the left top tightening device (2) and the right top tightening device (8), and a push plate (5) slidably matched with the two movable rails (3); a disassembly sleeve (6) is centrally arranged on one side of the push plate (5), and two stop blocks (4) are arranged on the other side, which are sleeved on the two movable rails (3) and positioned by bolts; a central through hole is arranged in the middle of the push plate (5); the output end of the left top tightening device (2) is connected to the left end push rod (12), and the output end of the right top tightening device (8) is provided with the right end push rod (9), and the left end push rod (12) and the right end push rod (9) are coaxially arranged; both ends of the push plate (5) are provided with circular holes that are the same as the two movable rails (3) and slidably matched.

2. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: The diameter of the central through hole is larger than the maximum diameter of the left end push rod (12) and smaller than the maximum diameter of the disassembly sleeve (6).

3. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: The left end push rod (12), the central through hole, and the disassembly sleeve (6) are coaxially arranged.

4. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: The left tightening device (2) and the right tightening device (8) adopt a hydraulic cylinder, a cam linear motion mechanism or a screw nut linear motion mechanism that can output linear reciprocating motion.

5. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: The free end of the disassembly sleeve (6) is tightly sleeved and fitted with the stepped end of the sealing flow-dividing sleeve (7).

6. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: A groove is provided on the side of the push plate (5) that contacts the disassembly sleeve (6), and the diameter of the groove matches the outer diameter of the disassembly sleeve (6), thereby ensuring that the two are coaxial.

7. The PT injector splitter sleeve disassembly device according to claim 1, characterized in that: It also includes a controller (11) and a plurality of pressure sensors (13). The pressure sensor (13) is arranged between the contact surface of the push plate (5) and the disassembly sleeve (6) and is electrically connected to the controller (11). The controller (11) is electrically connected to the left tightening device (2) and the right tightening device (8).

8. The PT injector splitter sleeve disassembly device according to claim 7, characterized in that: The pressure sensor (13) is a ceramic pressure sensor.

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