A vehicle gas injection rail calibration platform

Abstract

The present invention discloses a vehicle gas rail calibration platform, including: a workbench, on which a socket and a flow meter are provided, the socket has a jack, and the jack is connected to the flow meter through a pipeline; a down-pressing assembly, including: a down-pressing telescopic rod, a down-pressing sleeve bit, the bit is rotatably arranged in the down-pressing sleeve, and the upper end of the bit is connected to a rotating drive mechanism; when the down-pressing telescopic rod presses the down-pressing sleeve to the periphery of the flow adjustment bolt at the upper end of the gas rail, the bit is engaged with the flow adjustment bolt; a side-pressing assembly, including: a side-pressing telescopic rod, a side-pressing air intake joint, the side-pressing air intake joint is installed at the telescopic end of the side-pressing telescopic rod, and when the side-pressing telescopic rod is extended, the side-pressing air intake joint is butted and pressed against the air intake head on the side of the gas rail, and the side-pressing air intake joint is connected to the gas source through a pipeline. According to the vehicle gas rail calibration platform provided by the present invention, the gas rail is quickly clamped and calibrated, replacing manual work and improving efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of gas injection rail calibration, and in particular to a gas injection rail calibration platform for automobiles. Background Art

[0002] Working principle of gas injection rail: Gas is stored in the injection rail. Generally, 3 or 4 nozzles are installed in the injection rail to adapt to different models. At the same time, a pressure sensor is installed to monitor the pressure in the injection rail. The opening and closing of the nozzle is precisely controlled by the engine ECU, and the gas is delivered to the cylinder through the high-pressure nozzle.

[0003] Among them, the spray rail needs to be calibrated after assembly. The traditional spray rail calibration is: the spray rail inlet is connected to compressed air, and the outlet is connected to the glass float flowmeter. After the spray rail is supplied with air, the calibrator uses an Allen wrench to tighten the bolts on the spray rail valve core to adjust its movable stroke so that the indication of the glass float flowmeter is adjusted to the standard range. However, during the operation, the workload and labor intensity are large, the disassembly and assembly are cumbersome, and the calibration efficiency is low. Therefore, it is necessary to design and develop an efficient calibration workbench. Summary of the invention

[0004] In view of this, the object of the present invention is to provide an automobile gas rail calibration platform, which can quickly clamp the gas rail and perform calibration and adjustment on it, thereby replacing manual calibration and improving calibration efficiency.

[0005] To achieve the above objectives, the present invention provides an automobile fuel injection rail calibration platform, comprising:

[0006] A workbench, on which a socket and a flow meter are provided, wherein the socket has a socket for plugging in the air nozzle, and the socket is connected with the flow meter through a pipeline;

[0007] The pressing assembly comprises: a pressing telescopic rod, a pressing sleeve, and a screwdriver bit. The pressing telescopic rod is connected to the pressing sleeve. The screwdriver bit is arranged in the pressing sleeve and rotates around a vertical axis. The upper end of the screwdriver bit is connected to a rotating driving mechanism. When the pressing telescopic rod presses the pressing sleeve tightly against the periphery of the flow adjustment bolt at the upper end of the gas injection rail, the screwdriver bit is engaged with the flow adjustment bolt.

[0008] The side pressure assembly comprises: a side pressure telescopic rod and a side pressure air intake joint, wherein the side pressure air intake joint is installed at the telescopic end of the side pressure telescopic rod, and when the side pressure telescopic rod is extended, the side pressure air intake joint is butted and pressed against the air intake head on the gas injection rail side, and the side pressure air intake joint is connected with the gas source through a pipeline.

[0009] In some embodiments, the bit is arranged to move in a vertical direction.

[0010] In some embodiments, the bit is further provided with an elastic component for elastically pushing the bit downward.

[0011] In some embodiments, it also includes: a mounting block and a transmission sleeve, wherein the downward pressure sleeve is installed at the bottom of the mounting block, and the mounting block is connected to the downward pressure telescopic rod; the transmission sleeve is rotatably installed in the mounting block around a vertical axis, and the screwdriver bit is slidably connected to the transmission sleeve along a vertical direction, and the elastic component is installed in the transmission sleeve and elastically pushes the upper end of the screwdriver bit downward; the rotary drive mechanism is in transmission connection with the upper end of the transmission sleeve.

[0012] In some embodiments, the invention further includes: a lifting plate having a transversely long groove for fixing the mounting block.

[0013] In some embodiments, the rotary drive mechanism includes: a motor and a telescopic universal joint coupling, the output end of the motor is connected to the telescopic universal joint coupling, and the other end of the telescopic universal joint coupling is connected to the transmission sleeve.

[0014] In some embodiments, vertical guide rails are provided on both sides of the lifting plate, and the downward-pressing telescopic rods are provided on both sides of the lifting plate.

[0015] In some embodiments, it also includes: a bus block, the bus block has a plurality of bus inlets connected to the jacks, and the bus block also has a bus outlet connected to the flow meter.

[0016] In some embodiments, a stopper is further provided on a side of the gas injection rail away from the gas intake head.

[0017] In some embodiments, an elastic pad is also provided at the socket.

[0018] Compared with the prior art, the present invention has the following beneficial effects: the automobile gas rail calibration station provided can quickly clamp the gas rail and calibrate and adjust it, thereby replacing manual calibration and improving the calibration efficiency; in addition, the one-time calibration operation of the gas rail performed by the calibration station has a much higher calibration consistency than manual calibration, thereby making the back-end equipment run more smoothly.

[0019] 1. The screwdriver bit in the present invention is arranged to move up and down. When the lower pressing sleeve is pressed down to the limit position, the screwdriver bit moves up a short distance relative to the lower pressing sleeve. When the rotary drive mechanism drives the screwdriver bit to rotate, the screwdriver bit can move down under the action of gravity and align with the flow adjustment bolt, thereby reducing the difficulty of the operator in clamping the gas injection rail.

[0020] 2. In the present invention, one flow meter can meet multiple calibrations, and the structure is more compact.

[0021] 3. In the present invention, the calibration station adopts a flow meter to detect the flow of the injection rail, and sends the detection result to the control system. The control system controls the rotation direction and angle of the motor according to the flow value, and adjusts the movable stroke of the injection rail valve core. The response is sensitive, timely and fast, meeting the needs of batch calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0024] Figure 2 For the present invention Figure 1 Schematic diagram of the main structure in FIG.

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 4 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0027] In the figure: 1. workbench; 100. gas injection rail; 101. flow adjustment bolt; 102. air inlet head; 103. stopper; 11. socket; 111. jack; 112. elastic pad; 12. flow meter; 2. down-pressing assembly; 21. down-pressing telescopic rod; 22. down-pressing sleeve; 23. screwdriver bit; 24. elastic component; 25. mounting block; 26. transmission sleeve; 27. lifting plate; 28. vertical guide rail; 3. side-pressing assembly; 31. side-pressing telescopic rod; 32. side-pressing air inlet joint; 4. motor; 5. telescopic universal joint coupling; 6. confluence block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0029] See also Figure 1-Figure 4 , Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the main structure in FIG. Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A; Figure 4 For the present invention Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0030] The gas flow rate is calibrated and adjusted for a certain type of CNG fuel rail with four nozzles.

[0031] The embodiment of the present invention provides an automobile fuel injection rail calibration station, comprising:

[0032] A workbench 1 is provided with a socket 11 and a flow meter 12. The socket 11 has a socket 111 for plugging in a gas nozzle. The socket 111 is connected to the flow meter 12 through a pipeline, that is, a transverse hole is provided at the bottom of the socket 111, and is connected to the flow meter 12 through a pipeline. The corresponding number of the sockets 111 is set according to the number of nozzles on the gas injection rail to be calibrated. Here, four sockets 11 are arranged side by side for plugging in four gas nozzles on the gas injection rail. Furthermore, each socket 11 can be fixedly installed in a slide groove on the support plate of the workbench 1 by bolts, so as to facilitate adjustment of the distance between two adjacent sockets 11;

[0033] The pressing assembly 2 comprises: a pressing telescopic rod 21, a pressing sleeve 22, and a screwdriver bit 23, wherein the pressing telescopic rod 21 may be a cylinder, the pressing telescopic rod 21 is connected to the pressing sleeve 22, the screwdriver bit 23 is rotatably arranged in the pressing sleeve 22 around a vertical axis, and the upper end of the screwdriver bit 23 is connected to a rotating drive mechanism; when the pressing telescopic rod 21 presses the pressing sleeve 22 tightly against the periphery of the flow adjustment bolt 101 at the upper end of the gas injection rail 100, the screwdriver bit 23 is engaged with the flow adjustment bolt 101, and the flow adjustment bolt 101 on the gas injection rail calibrated this time is a hexagonal bolt head, and accordingly, the lower end of the screwdriver bit 23 is a matching hexagonal columnar shape;

[0034] The side pressure assembly 3 includes: a side pressure telescopic rod 31, and a side pressure air intake joint 32, wherein the side pressure air intake joint 32 is installed at the telescopic end of the side pressure telescopic rod 31, wherein the side pressure telescopic rod 31 can be a cylinder, and the side pressure air intake joint 32 has a hole that matches the air intake head 102, when the side pressure telescopic rod 31 is extended, the side pressure air intake joint 32 is connected to the air intake head 102 on the side of the gas rail 100 and is tightly connected, and the side pressure air intake joint 32 is connected to the gas source through a pipeline.

[0035] During the specific calibration process, in the first step, the operator installs the gas rail on the workbench 1 and inserts the gas nozzle downward into the socket 111; in the second step, the downward pressing telescopic rod 21 in the downward pressing assembly 2 drives the downward pressing sleeve 22 to move downward and press against the periphery of the flow adjustment bolt 101 at the upper end of the gas rail, and at the same time, the lower end of the screwdriver 23 is engaged with the flow adjustment bolt 101; in the third step, the side pressing telescopic rod 31 in the side pressing assembly 3 extends to connect the side pressing air inlet joint 32 with the air inlet head 102 on the side of the gas rail 100 to the top Tighten, and pass the test airflow to the gas rail 100 through the air inlet head 102; in the fourth step, the solenoid valve of the gas rail 100 is energized to drive the internal valve core to move and open, and the airflow flows from the gas nozzle to the socket 11 and the flow meter 12. The size detected by the flow meter 12 is used to rotate the batch head 23 forward or reversely through the rotary drive mechanism to achieve calibration. After the four calibrations are completed in sequence, the telescopic rod 31 is pressed to the left, and the telescopic rod 21 is pressed downward to move upward. The gas rail can be removed to calibrate the next one. It can be understood that by quickly clamping the gas rail and calibrating and adjusting it, manual calibration is replaced, and one operator can perform calibration operations on multiple devices in sequence, thereby improving calibration efficiency. In addition, the one-time calibration operation of the gas rail by the calibration station has a much higher calibration consistency than manual calibration, making the back-end equipment run more smoothly.

[0036] In order to avoid the lower end of the screwdriver bit 23 not being aligned and engaged with the flow adjusting bolt 101 when the lower pressure sleeve 22 presses the periphery of the flow adjusting bolt 101, in this embodiment, optionally, the screwdriver bit 23 is arranged to move in the vertical direction, that is, when the lower pressure sleeve 22 is pressed down to the extreme position, the screwdriver bit 23 moves up a short distance relative to the lower pressure sleeve 22, and when the rotary drive mechanism drives the screwdriver bit 23 to rotate, the screwdriver bit 23 can move down under the action of gravity and align and engage with the flow adjusting bolt 101.

[0037] Furthermore, the screwdriver bit 23 is provided with an elastic component 24 for elastically pushing the screwdriver bit 23 downward, which may be a compression spring, which presses the screwdriver bit 23 downward to ensure that the screwdriver bit 23 can be fully inserted into the flow adjustment bolt 101 for engagement.

[0038] Further, it also includes: a mounting block 25, and a transmission sleeve 26, the lower pressure sleeve 22 is installed at the bottom of the mounting block 25, and the mounting block 25 is connected to the lower pressure telescopic rod 21; the transmission sleeve 26 is installed in the mounting block 25 around the vertical axis, that is, the transmission sleeve 26 is installed in the mounting block 25 through two bearings, and the screwdriver 23 is slidably connected in the transmission sleeve 26 along the vertical direction, that is, a sliding hole with a regular hexagonal cross section can be set in the transmission sleeve 26, and the upper end of the screwdriver 23 is connected to the sliding hole. The upper end of the screwdriver bit 23 can slide up and down in the transmission sleeve 26, and the screwdriver bit 23 can also rotate with the transmission sleeve 26 when it rotates. The elastic component 24 is installed in the transmission sleeve 26, and elastically pushes the upper end of the screwdriver bit 23 downward. In order to prevent the screwdriver bit 23 from being completely pushed downward, a step can be set at the junction of the mounting block 25 and the lower pressure sleeve 22 to limit the extreme position of the downward movement of the screwdriver bit 23; the rotary drive mechanism is transmission-connected to the upper end of the transmission sleeve 26.

[0039] Furthermore, it also includes: a lifting plate 27, which has a transverse long groove for fixing the mounting blocks 25. Each mounting block 25 can be installed in the transverse long groove and fixed by a locking bolt. The mounting block 25 moves horizontally to adjust the distance between the two mounting blocks 25 according to the distance between the air nozzles.

[0040] Furthermore, the rotary drive mechanism includes: a motor 4 and a telescopic universal joint coupling 5. The motor 4 is a stepper motor fixed to a support plate. The output end of the motor 4 is connected to the telescopic universal joint coupling 5. The other end of the telescopic universal joint coupling 5 is connected to the transmission sleeve 26. In this way, the problem that the motor cannot be directly connected to two adjacent transmission sleeves 26 due to the small distance between them is solved.

[0041] Furthermore, vertical guide rails 28 are provided on both sides of the lifting plate 27 to guide the movement of the lifting plate 27, and the downward telescopic rod 21 is provided on both sides of the lifting plate 27, that is, the downward telescopic rod 21 is vertically provided on both sides of the lifting plate 27, and the downward telescopic rod 21 is installed on the support plate, and its telescopic end is connected to the lifting plate 27.

[0042] In order to meet the needs of performing multiple calibrations through one flow meter, the present embodiment may optionally further include: a confluence block 6 installed on the workbench 1, wherein the confluence block 6 has a plurality of confluence inlets connected to the jack 111, which are connected through pipelines, and the confluence block 6 also has a confluence outlet connected to the flow meter 12, which is also connected through pipelines, thereby playing a confluence role and having a more compact structure.

[0043] In order to ensure the stability of the side pressure assembly 3 when applying force to one side of the injection rail, in this embodiment, optionally, a stopper 103 is further provided on the side of the gas injection rail 100 away from the gas inlet head 102 .

[0044] In order to improve the sealing performance between the air spray head and the insertion hole 111, in this embodiment, optionally, an elastic pad 112 is further provided at the insertion hole 111, which may be a hard rubber sleeve.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. It should be noted that similar numbers 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.

Claims

1. An automobile gas rail calibration station, characterized in that: include: A workbench (1) is provided with a socket (11) and a flow meter (12), wherein the socket (11) has a socket (111) for plugging in an air nozzle, and the socket (111) is connected to the flow meter (12) through a pipeline; A pressing assembly (2) comprises: a pressing telescopic rod (21), a pressing sleeve (22), and a screwdriver bit (23); the pressing telescopic rod (21) is connected to the pressing sleeve (22); the screwdriver bit (23) is rotatably arranged in the pressing sleeve (22) around a vertical axis, and the upper end of the screwdriver bit (23) is transmission-connected to a rotating drive mechanism; when the pressing telescopic rod (21) presses the pressing sleeve (22) against the periphery of a flow adjustment bolt (101) at the upper end of the gas injection rail (100), the screwdriver bit (23) is engaged with the flow adjustment bolt (101); A side pressure assembly (3) comprising: a side pressure telescopic rod (31) and a side pressure air intake connector (32), wherein the side pressure air intake connector (32) is mounted on the telescopic end of the side pressure telescopic rod (31), and when the side pressure telescopic rod (31) is extended, the side pressure air intake connector (32) is butted against the air intake head (102) on the side of the gas injection rail (100) and is connected to the gas source via a pipeline; The screwdriver bit (23) is arranged to move along the vertical direction; The screwdriver bit (23) is also provided with an elastic component (24) for elastically pushing the screwdriver bit (23) downwards; The utility model also comprises: a mounting block (25) and a transmission sleeve (26), wherein the pressing sleeve (22) is mounted on the bottom of the mounting block (25), and the mounting block (25) is connected to the pressing telescopic rod (21); the transmission sleeve (26) is mounted in the mounting block (25) so as to rotate around a vertical axis, the screwdriver bit (23) is slidably connected in the transmission sleeve (26) along a vertical direction, the elastic component (24) is mounted in the transmission sleeve (26) and elastically pushes the upper end of the screwdriver bit (23) downward; and the rotary drive mechanism is in transmission connection with the upper end of the transmission sleeve (26).

2. The automobile gas rail calibration platform according to claim 1, characterized in that: Also includes: A lifting plate (27) is provided with a transverse long groove for fixing the mounting block (25).

3. The automobile gas rail calibration platform according to claim 2, characterized in that: The rotary drive mechanism comprises: a motor (4) and a telescopic universal joint coupling (5); an output end of the motor (4) is connected to the telescopic universal joint coupling (5); and the other end of the telescopic universal joint coupling (5) is connected to a transmission sleeve (26).

4. The automobile gas rail calibration platform according to claim 2, characterized in that: Vertical guide rails (28) are provided on both sides of the lifting plate (27), and the downward-pressing telescopic rods (21) are provided on both sides of the lifting plate (27).

5. The automobile gas rail calibration platform according to any one of claims 1 to 4, characterized in that: Also includes: A confluence block (6), wherein the confluence block (6) has a plurality of confluence inlets connected to the jacks (111), and the confluence block (6) also has a confluence outlet connected to the flow meter (12).

6. The automobile gas rail calibration platform according to any one of claims 1 to 4, characterized in that: A stopper (103) is also provided on the side of the gas injection rail (100) away from the gas inlet head (102).

7. The automobile gas rail calibration platform according to any one of claims 1 to 4, characterized in that: An elastic pad (112) is also provided at the insertion hole (111).

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