Auxiliary tool for mounting valve spring

Abstract

The invention relates to an auxiliary tool for mounting a valve spring. The auxiliary tool comprises a bearing disc, a spring limiting device and more than two locking devices, the bearing disc is suitable for bearing an inlet flange of the pump front valve, and the more than two locking devices are arranged on the side wall of the bearing disc and are suitable for locking the inlet flange on the bearing disc; the spring limiting device is arranged on the top surface of the bearing disc through the first supporting device, and the spring limiting device is suitable for penetrating through a middle hole of the inlet flange to extend into the inner side of the inlet flange; the spring limiting device is provided with two or more spring pressing pieces, the number of the spring pressing pieces is the same as that of spring mounting holes formed in the inner side of the inlet flange, and the two or more spring pressing pieces are arranged on the spring limiting device in a telescopic mode. And the more than two spring pressing sheets are respectively covered on the more than two spring mounting holes, so that the springs in the spring mounting holes are fixed in the spring mounting holes.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to an auxiliary tooling for installing a valve spring. Background Art

[0002] The valve is a precision component of the engine and a control device for gas and liquid pipelines. It is used to cut off and connect pipeline media, adjust the pressure and flow of the media, change the flow direction of the media, and protect the safe operation of various systems of the engine. It plays a role in timing control and working condition adjustment for the normal operation of the engine. Fig. 9 As shown, a pump front valve is mainly composed of an inlet flange, a valve seat, a housing, a ball, etc.; the inlet flange is installed on one side of the housing, and 20 small springs are arranged around the inlet flange and the valve seat. When the valve is closed, under the elastic force of the 20 small springs, the valve seat contacts the ball and presses the ball tightly to prevent the ball from rotating. When the valve is opened, the valve seat needs to overcome the deformation force of the 20 small springs, compress the small springs to lift the valve seat, thereby loosening the ball so that the ball can rotate, thereby realizing the opening and closing of the valve. During the assembly of the pump front valve, the valve part needs to be installed first, and then the 20 small springs are placed in the spring mounting holes of the inlet flange in turn, and then the inlet flange is connected to the housing by bolts and nuts. Since the small spring is not directly fixed in the spring mounting hole of the inlet flange and is movable, when installing the inlet flange and the housing, the spring can only be placed in the inlet flange first, and then the previously assembled valve part is turned upside down on the inlet flange, and then the inlet flange and the housing are tightened by bolt connection. However, since the valve has many parts, is large in size and weighs nearly 40kg, the inverted installation process requires the cooperation of several people, which is not only time-consuming and labor-intensive, but also easily causes damage to the valve if operated improperly.

[0003] Therefore, a set of auxiliary tooling for spring assembly is urgently needed to improve the convenience of valve spring installation. Summary of the invention

[0004] In view of this, the present application proposes an auxiliary tool for installing a valve spring.

[0005] According to one aspect of the present application, there is provided an auxiliary tool for valve spring installation, characterized in that it is used for installing a spring in a pump front valve, and comprises: a receiving plate, a spring limiting device and two or more locking devices;

[0006] The receiving plate is suitable for carrying the inlet flange of the front valve of the pump, and two or more locking devices are arranged on the side wall of the receiving plate, which are suitable for locking the inlet flange on the receiving plate;

[0007] The spring limiting device is arranged on the top surface of the receiving plate through the first supporting device, and the spring limiting device is suitable for penetrating into the inner side of the inlet flange through the middle hole of the inlet flange;

[0008] The spring limiting device is provided with more than two spring pressing plates, the number of which is the same as the number of spring mounting holes arranged on the inner side of the inlet flange. The more than two spring pressing plates are telescopically arranged on the spring limiting device, and are suitable for when the more than two spring pressing plates are in an extended state, the more than two spring pressing plates respectively cover the more than two spring mounting holes to fix the springs in the spring mounting holes.

[0009] In a possible implementation, a second supporting device is provided on the bottom surface of the receiving tray.

[0010] In a possible implementation, the locking device includes: a locking seat and a locking pin;

[0011] One side of the locking seat is connected to the receiving plate, and the locking pin is movably arranged on the locking seat and can move in a direction toward or away from the inlet flange.

[0012] In a possible implementation, two locking devices are provided;

[0013] The two locking devices are arranged oppositely on the side walls of the receiving plate.

[0014] In a possible implementation, two positioning pins are provided on one side of the receiving plate where the inlet flange is mounted, which are suitable for positioning the inlet flange when it is installed.

[0015] In a possible implementation, the spring limiting device includes: a rotating disk, a rotating shaft and a fixed disk;

[0016] The fixed disk is arranged above the receiving disk through the first supporting device; the rotating disk is rotatably arranged above the fixed disk, and a gap is arranged between the rotating disk and the fixed disk;

[0017] The rotating shaft passes through the centers of the rotating disk, the fixed disk and the receiving disk in sequence, and the rotating shaft is fixedly connected to the rotating disk, and is suitable for driving the rotating disk to rotate when the rotating shaft rotates;

[0018] More than two spring pressing sheets are arranged in the gap between the rotating disk and the fixed disk, and the more than two spring pressing sheets are rotatably connected to the rotating disk.

[0019] In a possible implementation, it further includes: two rotating handles;

[0020] Two rotating handles are respectively arranged at two ends of the rotating shaft.

[0021] In a possible implementation, 20 spring pressing plates are provided; the 20 spring pressing plates are arranged in sequence along the annular structure of the rotating disk.

[0022] In a possible implementation, it further includes: a supporting portion;

[0023] The supporting part is sleeved on the outer side of the rotating shaft, and the receiving plate is placed on the supporting part.

[0024] In a possible implementation, the spring limiting device is further provided with a positioning ring;

[0025] The positioning ring is buckled on the top surface of the rotating disk and is located at the edge of the rotating disk.

[0026] Beneficial effect: With the auxiliary installation of the present application, there is no need to move the installed part of the valve, and the inlet flange 900 can be directly moved, and it can be ensured that the spring 910 in the inlet flange 900 will not fall off, thereby making the overall operation simple, and also ensuring that the inlet flange 900 and the spring 910 can be installed correctly, and the safety during the installation process is also guaranteed.

[0027] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 A main structural diagram showing an auxiliary tooling for valve spring installation according to an embodiment of the present application;

[0030] Figure 2 A front view showing an auxiliary tooling for installing a valve spring according to an embodiment of the present application;

[0031] Figure 3 Show Figure 2 Cross-section of the middle AA;

[0032] Figure 4 A main structural diagram of a receiving tray according to an embodiment of the present application is shown;

[0033] Figure 5 A main structural diagram of a rotating disk according to an embodiment of the present application is shown;

[0034] Figure 6 A main structural diagram of a fixed disk according to an embodiment of the present application is shown;

[0035] Figure 7 A main structural diagram of a rotating shaft according to an embodiment of the present application is shown;

[0036] Figure 8 A main structural diagram of a tablet press according to an embodiment of the present application is shown;

[0037] Fig. 9 A cross-sectional view showing the valve in front of the pump;

[0038] Fig.10 A working assembly diagram showing an auxiliary tooling for installing a valve spring according to an embodiment of the present application;

[0039] Fig.11 A working assembly diagram showing an auxiliary tooling for installing a valve spring according to an embodiment of the present application;

[0040] Fig.12 A top view of a tablet according to an embodiment of the present application is shown;

[0041] Fig.13 A main structure diagram of a first modified bolt according to an embodiment of the present application is shown;

[0042] Fig.14 A main structural diagram of a second modified bolt according to an embodiment of the present application is shown;

[0043] Fig.15 A main structural diagram of the supporting part of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0044] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0045] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0048] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0049] like Figure 1 As shown, the auxiliary tooling for valve spring installation is used for installing the spring 910 in the front valve of the pump, comprising: a receiving plate 100, a spring limiting device and two or more locking devices; the inner side of the inlet flange 900 of the front valve of the pump is provided with two or more spring installation holes 960, the spring 910 is arranged in the spring installation holes 960, the receiving plate 100 is suitable for bearing the inlet flange 900, and the two or more locking devices are arranged on the side wall of the receiving plate 100, which are suitable for locking the inlet flange 900 on the receiving plate 100; the spring limiting device is connected to the receiving plate 100 by the first support The supporting device is arranged on the top surface of the receiving plate 100, and the spring limiting device is suitable for passing through the middle hole of the inlet flange 900 and probing into the inner side of the inlet flange 900; the spring limiting device is provided with more than two spring pressing plates 500, and the number of the spring pressing plates 500 is the same as the number of the spring mounting holes 960. The more than two spring pressing plates 500 are telescopically arranged on the spring limiting device, and are suitable for when the more than two spring pressing plates 500 are in an extended state, the more than two spring pressing plates 500 respectively cover the more than two spring mounting holes 960 of the inlet flange 900.

[0050] The present application is applicable to assisting the installation of the inlet flange 900 of the valve and the internal spring 910. It should be noted here that the receiving plate 100 is applicable to placing the inlet flange 900. The locking devices on both sides of the receiving plate 100 are applicable to fixing and locking the inlet flange 900 placed on the receiving plate 100 to prevent the inlet flange 900 from loosening during the installation process and causing the inlet flange 900 to fall off the receiving plate 100. The first supporting device is applicable to supporting the spring limiting device. When the inlet flange 900 is installed on the receiving plate 100, the spring limiting device is supported by the first supporting device. It is possible to penetrate through the middle hole of the inlet flange 900 and probe into the inner side of the circle of the inlet flange 900. Since more than two spring mounting holes 960 are arranged in a circle on the inner side of the circle of the inlet flange 900, when more than two spring pressing plates 500 protrude from the spring limiting device, more than two spring pressing plates 500 just cover the top of more than two spring mounting holes 960 one by one, thereby fixing and limiting the spring 910 inside the spring mounting hole 960. This is suitable for preventing the spring 910 inside the inlet flange 900 from falling out of the spring mounting hole 960 when the inlet flange 900 is installed on the valve housing. Furthermore, the auxiliary installation process of the present application is described as follows: first, all small springs 910 are placed in the spring mounting holes 960 of the inlet flange 900 in sequence, and then the inlet flange 900 is placed as a whole on the receiving plate 100; the locking device is adjusted to stably lock the inlet flange 900 on the receiving plate 100; all spring pressing plates 500 are extended out of the spring limiting device and correspond one by one to the spring mounting holes 960; then, the inlet flange 900 and the present application are inverted together, and the inlet flange 900 is docked to the installation position of the valve housing, and then the spring pressing plate 500 is retracted into the spring limiting device, the small springs 910 are released, and the present application is removed; finally, the inlet flange 900 and the valve housing are installed in place. With the auxiliary installation of the present application, there is no need to move the installed part of the valve, and the inlet flange 900 can be directly moved, and it can be ensured that the spring 910 in the inlet flange 900 will not fall off, thereby simplifying the overall operation, ensuring that the inlet flange 900 and the spring 910 can be installed correctly, and the safety during the installation process is also guaranteed.

[0051] In a possible implementation, a second supporting device is provided on the bottom surface of the receiving tray 100. Here, it should be noted that the second supporting device is suitable for supporting the receiving tray 100 off the ground, and further, the second supporting device includes: more than two second supporting rods 120, more than two second supporting rods 120 are vertically arranged at the bottom of the receiving tray 100, and a threaded hole is provided at one end of the second supporting rod 120 connected to the receiving tray 100, and the second supporting rod 120 and the receiving tray 100 are fixedly connected by bolt connection.

[0052] Furthermore, there are three second support rods 120. The main body of the second support rod 120 is cylindrical, and the diameter of the end surface thereof ranges from 11.8 mm to 12.2 mm.

[0053] In a possible implementation, the locking device includes: a locking seat 710 and a locking pin 700; one side of the locking seat 710 is connected to the receiving plate 100, and the locking pin 700 is movably disposed on the locking seat 710 and can move in a direction toward or away from the inlet flange 900. Figure 1 As shown, the main body of the locking seat 710 is a block structure with an L-shaped cross section, one side of the locking seat 710 is fixedly connected to the bottom surface of the receiving plate 100, and the other side of the locking seat 710 protrudes out of the outside of the receiving plate 100. The locking pin 700 passes through the locking seat 710, and the locking pin 700 can be rotated to move in a direction toward or away from the inlet flange 900, thereby locking and loosening the inlet flange 900. Furthermore, the locking seat 710 and the receiving plate 100 are fixed as a whole by bolt connection.

[0054] In a possible implementation, two locking devices are provided; the two locking devices are arranged oppositely on the side walls of the receiving tray 100. Figure 1 As shown, the two locking devices are arranged opposite to each other, and when the inlet flange 900 is placed on the receiving plate 100, the two locking devices are located on opposite sides of the inlet flange 900. Under the clamping action of the two locking devices, the locking stability between the receiving plate 100 and the inlet flange 900 can be ensured.

[0055] In a possible implementation, two positioning pins 720 are provided on one side of the receiving plate 100 where the inlet flange 900 is installed, which are suitable for positioning the inlet flange 900 when installing it. Figure 1 As shown, the positioning pin 720 is fixedly arranged on the top surface of the receiving plate 100, and one end of the positioning pin 720 connected to the inlet flange 900 is arranged in a spherical structure.

[0056] It should be noted that in order to ensure that the spring pressing piece 500 accurately extends above the spring mounting hole 960, the position of the inlet flange 900 needs to be limited. Since a groove matching the positioning pin 720 is provided at the bottom of the inlet flange 900, when the inlet flange 900 is placed on the receiving plate 100, the positioning pin 720 is embedded in the groove at the bottom of the inlet flange 900, thereby realizing the positioning of the inlet flange 900 and ensuring that the inlet flange 900 will not rotate on the receiving plate 100, thereby avoiding misalignment of the spring pressing piece 500 and the spring mounting hole 960.

[0057] In one possible implementation, Figure 4As shown, the main body of the receiving plate 100 is a circular disc-shaped structure, and a circular shaft hole 140 is provided at the center of the circle, and the shaft hole 140 of the receiving plate 100 is suitable for passing the rotating shaft. The receiving plate 100 is provided with more than two observation holes 190, and the more than two observation holes 190 are arranged around the outside of the circular shaft hole 140. Since all the spring pressing plates 500 need to be retracted into the spring limiting device after the inlet flange 900 is docked to the installation position of the valve housing, the spring limiting device can be smoothly removed from the inlet flange 900. Therefore, in order to facilitate the observation of the extension and retraction state of the spring pressing plate 500 after the inlet flange 900 is docked to the valve housing, and to ensure that the spring pressing plate 500 is completely retracted into the spring limiting device, an observation hole 190 is provided on the receiving plate 100. Further, there are four observation holes 190, and the four observation holes 190 are all circular hole-shaped structures. At the same time, the receiving plate 100 has bolt holes 160 for installing the first supporting device, the receiving plate 100 has bolt holes 150 for installing the supporting part 130, the receiving plate 100 has bolt holes 180 for installing the second supporting device, and the receiving plate 100 has bolt holes 170 for installing the locking device.

[0058] In a possible implementation, the diameter range of the receiving plate 100 is: 198mm-202mm; the ratio of the diameter of the shaft hole 140 to the diameter of the receiving plate 100 is 3:20; the diameter range of the observation hole 190 is 44.8mm-45.2mm; and the length range of the center of the four observation holes 190 from the center of the shaft hole 140 is 50mm-55mm; the length range of the center of the bolt hole 160 from the center of the shaft hole 140 is 40mm-50mm.

[0059] Preferably, the diameter of the receiving plate 100 is 200 mm; the diameter of the shaft hole 140 is 30 mm; the diameter of the observation hole 190 is 45 mm, and the length of the center of the four observation holes 190 from the center of the shaft hole 140 is 55 mm; the length of the center of the bolt hole 160 from the center of the shaft hole 140 is 45 mm; the length of the center of the bolt hole 150 from the center of the shaft hole 140 is 19 mm; the length of the center of the bolt hole 180 from the center of the shaft hole 140 is 85 mm.

[0060] In a possible implementation, the spring limiting device includes: a rotating disk 300, a rotating shaft and a fixed disk 400; the fixed disk 400 is arranged above the receiving disk 100 through a first supporting device; the rotating disk 300 is rotatably arranged above the fixed disk 400, and the plane where the rotating disk 300 is located is parallel to the plane where the fixed disk 400 is located; the rotating shaft passes through the center of the rotating disk 300, the fixed disk 400 and the receiving disk 100 in sequence, and the rotating shaft is fixedly connected to the rotating disk 300, which is suitable for driving the rotating disk 300 to rotate when the rotating shaft rotates; more than two spring pressing plates 500 are arranged between the rotating disk 300 and the fixed disk 400, and are connected to the rotating disk 300. Here, it should be noted that the fixed disk 400 is suitable for supporting more than two spring pressing plates 500, and the rotating shaft drives the rotating disk 300 to rotate when rotating, and when the rotating disk 300 rotates, it drives more than two spring pressing plates 500 to perform telescopic movement.

[0061] like Figure 7 As shown, the rotating shaft includes: a shaft body 200, a connecting flange 220 and two handle mounting parts 230; the two handle mounting parts 230 are respectively arranged on the two end surfaces of the shaft body 200, and the connecting flange 220 is sleeved on the outside of the shaft body 200. Further, the main body of the shaft body 200 is a cylindrical structure, the main body of the handle mounting part 230 is a rectangular parallelepiped structure, the main body of the connecting flange 220 is an annular columnar structure, and the connecting flange 220 is provided with more than two bolt holes, and the more than two bolt holes are arranged in sequence along the annular structure of the connecting flange 220.

[0062] In a possible implementation, the length of the shaft body 200 ranges from 95 mm to 100 mm; and the ratio of the diameter of the shaft body 200 to the diameter of the receiving plate 100 is 1:10.

[0063] Preferably, the length of the shaft body 200 is 97 mm, and the diameter of the shaft body 200 is 20 mm; the height of the handle mounting portion 230 is 18 mm, and the length and width are both 12 mm; the thickness of the connecting flange 220 is about 9.1 mm.

[0064] like Figure 5 and Figure 6As shown, shaft holes are provided in the middle of the fixed disk 400 and the rotating disk 300 , and the diameter of the shaft hole 340 of the rotating disk 300 is smaller than the diameter of the shaft hole 420 of the fixed disk 400 . Furthermore, the shaft hole 340 of the rotating disk 300 matches the shaft body 200, and the rotating disk 300 is sleeved on the shaft body 200 of the rotating shaft, and the shaft hole 420 of the fixed disk 400 matches the connecting flange 220, and the fixed disk 400 is sleeved on the connecting flange 220. Since the rotating disk 300 is located above the connecting flange 220, more than two bolt holes 350 are opened around the shaft hole 340 of the rotating disk 300, and the bolt holes 350 of the rotating disk 300 are correspondingly arranged with the bolt holes 221 of the connecting flange 220. The bolts 210 are screwed into the bolt holes 350 of the rotating disk 300 and the bolt holes 221 of the connecting flange 220 to realize the fixed connection between the rotating disk 300 and the connecting flange 220, so that the rotating disk 300 can be driven to rotate when the rotating shaft rotates.

[0065] In a possible implementation, the device further includes: two rotating handles 600; the two rotating handles 600 are respectively disposed at two ends of the rotating shaft. Figure 3 As shown, the structures of the two rotating handles 600 are the same. The rotating handles 600 are buckled on the handle mounting portion 230 of the rotating shaft, and a bolt hole is opened in the middle of the rotating handle 600. The handle mounting portion 230 also has a corresponding bolt hole 231. The screw 610 is inserted into the bolt hole of the rotating handle 600 and the bolt hole 231 of the handle mounting portion 230 to achieve a fixed connection between the rotating handle 600 and the rotating shaft, so that the rotating shaft is driven to rotate when the rotating handle 600 is rotated. Further, two rotating handles 600 are provided and arranged at both ends of the rotating shaft, one of which is located above the rotating disk 300 and the other is located below the receiving disk 100, which is suitable for operating the rotating shaft to rotate when the present application is placed upright or inverted, so as to achieve the extension and retraction of the spring pressing piece 500.

[0066] In a possible implementation, more than two spring pressing sheets 500 are disposed between the rotating disk 300 and the fixed disk 400, and more than two spring pressing sheets 500 are connected to the bottom surface of the rotating disk 300. Figure 8As shown, the main body of the spring pressing piece 500 is a long strip-shaped sheet structure, one end of the spring pressing piece 500 is rotatably connected to the rotating disk 300, and the other end of the spring pressing piece 500 is provided with a holding portion 530, and the main body of the holding portion 530 is a triangular plate-shaped structure, and the size of the holding portion 530 needs to be larger than the size of the spring mounting hole 960 of the inlet flange 900 to ensure that the holding portion 530 completely covers the spring mounting hole 960. Further, a first connecting hole 510 is provided at one end of the spring pressing piece 500 connected to the rotating disk 300, and a second connecting hole 360 ​​is provided on the rotating disk 300. When the spring pressing piece 500 is placed under the rotating disk 300, the first connecting hole 510 is opposite to the second connecting hole 360, and the first modified bolt 320 is suitable for penetrating into the first connecting hole 510 and the second connecting hole 360. It should be noted that a certain gap is provided between the spring pressing plate 500 and the rotating disk 300 to ensure that the spring pressing plate 500 can rotate with the first modified bolt 320 as the center. A first oblong guide hole 520 is provided in the middle of the spring pressing plate 500, and the length direction of the first guide hole 520 is parallel to the length direction of the spring pressing plate 500; the fixed disk 400 is provided with a second guide hole 430, and the main body of the second guide hole 430 is a circular hole structure. The spring pressing plate 500 is placed above the fixed disk 400, and the first guide hole 520 of the spring pressing plate 500 is opposite to the second guide hole 430 of the fixed disk 400, and the second modified bolt 410 matches the second guide hole 430, and the second modified bolt 410 passes through the second guide hole 430 and the first guide hole 520 in sequence. When the rotating shaft rotates, the spring pressing piece 500 on the rotating disk 300 is driven to move. Since the second reformed bolt 410 is immobile, the moving track of the spring pressing piece 500 is determined under the guidance of the first guide hole 520 during the movement. Figure 1 As shown, when the rotating shaft rotates counterclockwise, the first modified bolt 320 is displaced, thereby driving the spring pressing piece 500 to move toward the second modified bolt 410. The second modified bolt 410 is stationary and located in the first guide hole 520 and the second guide hole 430. Therefore, the spring pressing piece 500 is guided by the second guide hole 430 and extends outward from the rotating disk 300. When the rotating shaft rotates clockwise, the first modified bolt 320 is displaced, thereby driving the spring pressing piece 500 to move away from the second modified bolt 410. The second modified bolt 410 is located in the first guide hole 520. Therefore, the spring pressing piece 500 is guided by the second guide hole 430 and retracts toward the inner side of the rotating disk 300. Thus, the extension control and retraction control of the spring pressing piece 500 can be achieved by rotating the rotating shaft.

[0067] Here, it should be noted that the first modified bolt 320 is fixed to the second connection hole 360 ​​of the rotating disk 300 by threaded connection to ensure that the first modified bolt 320 does not separate from the rotating disk 300. The second modified bolt 410 is fixed to the second guide hole 430 of the fixed disk 400 by threaded connection to ensure that the second modified bolt 410 does not separate from the fixed disk 400.

[0068] In a possible implementation, there are 20 spring pressing plates 500; the 20 spring pressing plates 500 are arranged in sequence along the annular structure of the rotating disk 300. The structures of the 20 spring pressing plates 500 are the same, and the tips of the pressing portions 530 of the 20 spring pressing plates 500 face the same direction, so as to ensure that the 20 spring pressing plates 500 will not interfere with or hinder each other when extending and retracting at the same time. Figure 5 As shown, the rotating disk 300 is provided with 20 second connection holes 360, and the distances between the 20 second connection holes 360 and the center of the rotating disk 300 are the same, and the distances between the 20 second connection holes 360 are the same; similarly, the fixed disk 400 is provided with 20 second guide holes 430, and the distances between the 20 second guide holes 430 and the center of the fixed disk 400 are the same, and the distances between the 20 second guide holes 430 are the same. Further, 20 spring pressing plates 500 are placed between the rotating disk 300 and the fixed disk 400, and the first connection holes 510 of each spring pressing plate 500 are aligned with each second connection hole 360 ​​on the rotating disk 300, and then the 20 first reformed bolts 320 are rotated into the first connection holes 510 and the second connection holes 360 to realize the rotatable connection between the 20 spring pressing plates 500 and the rotating disk 300, so that the spring pressing plates 500 can rotate with the first guide holes 520 and realize extension and retraction. Align the first guide hole 520 of each spring pressing plate 500 with each second guide hole 430 on the fixed disk 400 one by one, and then rotate the 20 second modified bolts 410 into the first guide hole 520 and the second guide hole 430. Since the second guide holes 430 and the second modified bolts 410 are in a fixed state, when the rotating disk 300 is rotated, all the spring pressing plates 500 also have to rotate accordingly. However, under the limiting action of the second modified bolts 410 in the first guide holes 520, the spring pressing plates 500 themselves rotate with the first modified bolts 320 as the center, thereby allowing the spring pressing plates 500 to be rotated into the gap between the rotating disk 300 and the fixed disk 400 or to protrude out of the gap between the rotating disk 300 and the fixed disk 400.

[0069] It should be noted that the vertical distance between the rotating disk 300 and the fixed disk 400 is greater than the thickness of the spring pressing plate 500 and less than 1.08 times the thickness of the spring pressing plate 500 .

[0070] In a possible implementation, it also includes: a rotation limiting device; the rotation limiting device is arranged on the rotating disk 300, and is suitable for limiting the rotation angle of the rotating disk 300 to prevent the rotating disk 300 from rotating excessively and causing the spring pressing plate 500 to be damaged under the tension of the first modified bolt 320 and the second modified bolt 410.

[0071] In one possible implementation, the rotation limit device includes: a limit pin 331 and a limit hole 330; the limit hole 330 is opened on the rotating disk 300, the main body of the limit hole 330 is an arc-shaped hole structure, and the vertex of the central angle of the arc-shaped hole structure is the center of the rotating disk 300, one end of the limit pin 331 passes through the limit hole 330 and the limit hole 460 of the fixed disk 400, and the other end of the limit pin 331 protrudes out of the limit hole 330. When the rotating disk 300 rotates, the limit hole 330 rotates accordingly, but the limit pin 331 and the fixed disk 400 do not move, so under the fixing action of the limit pin 331 inside the limit hole 330, the rotating disk 300 can only rotate within the arc length range of the limit hole 330.

[0072] Furthermore, the length of the limiting hole 330 is related to the stroke between the fully retracted state and the fully extended state of the spring pressing plate 500, that is, it is related to the length of the first guide hole 520. It is ensured that when the limiting pin 331 is located at one end of the limiting hole 330, the second reformed bolt 410 is located at one end of the first guide hole 520, and when the limiting pin 331 is located at the other end of the limiting hole 330, the second reformed bolt 410 is located at the other end of the first guide hole 520.

[0073] In summary, if Figure 5 As shown, the main body of the rotating disk 300 is a circular disk-shaped structure, the center of the rotating disk 300 is provided with an axial hole 340 for inserting the rotating shaft, the rotating disk 300 is provided with 20 second connecting holes 360 for connecting the spring pressing plate 500, and the rotating disk 300 is provided with four bolt holes 350 for connecting the rotating shaft. The thickness of the rotating disk 300 ranges from 4.8mm to 5.2mm; the ratio of the diameter of the rotating disk 300 to the diameter of the receiving disk 100 is 13:20; the ratio of the length of the center of all the second connecting holes 360 from the center of the rotating disk 300 to the radius of the rotating disk 300 is 49:65, and the distance between the centers of any two adjacent bolt holes 350 is the same; the distance between the side of the limiting hole 330 close to the axial hole 340 and the center of the axial hole 340 ranges from 31mm to 32mm, and the width of the limiting hole 330 ranges from 6mm to 6.4mm.

[0074] Preferably, the diameter of the rotating disk 300 is 130 mm, and the thickness of the rotating disk 300 is 5 mm; the diameter of the shaft hole 340 of the rotating disk 300 is 20 mm; the length of the center of all second connecting holes 360 from the center of the rotating disk 300 is 49 mm, and the distance between the centers of any two adjacent second connecting holes 360 is the same; the length of the four bolt holes 350 from the center of the rotating disk 300 is 17 mm, and the distance between the centers of any two adjacent bolt holes 350 is the same; the distance between the side of the limiting hole 330 close to the shaft hole 340 and the center of the shaft hole 340 is 31.9 mm, and the width of the limiting hole 330 is 6.2 mm.

[0075] In summary, if Figure 6 As shown, the main body of the fixed disk 400 is a circular disk structure, the center of the fixed disk 400 is provided with an axial hole 420 for penetrating the rotating shaft, the fixed disk 400 is provided with 20 second guide holes 430 for connecting the spring pressure plate 500, and the fixed disk 400 is provided with four bolt holes 450 for connecting the first supporting device. The fixed disk 400 is provided with four second observation holes 470, and the position state of the pressure plate 500 can be observed under the action of the second observation holes 470 and the first observation holes 190. The ratio of the diameter of the fixed disk 400 to the diameter of the receiving disk 100 is 13:20; the diameter of the fixed disk 400 is the same as the diameter of the rotating disk 300; the vertical distance between the fixed disk 400 and the receiving disk 100 ranges from 64.3mm to 64.7mm: the ratio of the length of the center of all the second guide holes 430 to the center of the fixed disk 400 to the radius of the fixed disk 400 is 57:65.

[0076] Preferably, the diameter of the fixed disk 400 is 130 mm, and the thickness of the fixed disk 400 is 8 mm; the diameter of the axial hole 340 of the fixed disk 400 is 42 mm; the length of the center of all second guide holes 430 from the center of the fixed disk 400 is 57 mm, and the distance between the centers of any two adjacent second guide holes 430 is the same; the length of the center of the four bolt holes 450 from the center of the fixed disk 400 is 45 mm, and the distance between the centers of any two adjacent bolt holes 450 is the same.

[0077] In summary, if Fig.12As shown, a first oblong guide hole 520 is provided in the middle of the spring pressing piece 500, and a first connecting hole 510 is provided at one end of the spring pressing piece 500. The overall length L1 of the spring pressing piece 500 is in the range of 41.8mm-42.2mm; the overall width L2 of the spring pressing piece 500 is in the range of 13.3mm-13.7mm; the overall thickness of the spring pressing piece 500 is in the range of 19.5mm-20.5mm; the angle a between one side of the spring pressing piece 500 and one side of the pressing portion 530 is in the range of 130°-135°; the angle b between the other side of the spring pressing piece 500 and the other side of the pressing portion 530 is in the range of 160°-165°; the width L3 of the first guide hole 520 is in the range of 3mm-3.5mm, and the length L4 of the first guide hole 520 is in the range of 13mm-14mm.

[0078] Preferably, the overall length L1 of the spring pressing sheet 500 is 41.93 mm, and the overall width L2 of the spring pressing sheet 500 is 13.52 mm; the overall thickness of the spring pressing sheet 500 is 20 mm; the angle a between one side of the spring pressing sheet 500 and one side of the pressing portion 530 is 132°; the angle b between the other side of the spring pressing sheet 500 and the other side of the pressing portion 530 is 161°; the length L5 of one side of the spring pressing sheet 500 is 33.5 mm; the length L8 of the other side of the spring pressing sheet 500 is 19.5 mm; the width L6 of the end of the spring pressing sheet 500 opposite to the pressing portion 530 is 7 mm. The width L3 of the first guide hole 520 is 3 mm, the length L4 of the first guide hole 520 is 13.5 mm, and the maximum distance that the second modified bolt can move in the first guide hole 520 is 10.5 mm; the diameter of the first connecting hole 510 is 3 mm; the distance L7 between the first connecting hole 510 and the first guide hole 520 is 4 mm.

[0079] In a possible implementation, the device further includes: a supporting portion 130; the supporting portion 130 is sleeved on the outer side of the rotating shaft, and the receiving plate 100 is placed on the supporting portion 130. Figure 3 As shown, the main body of the supporting part 130 is annular in structure and its cross section is L-shaped. The shaft hole 140 of the receiving plate 100 is sleeved on the outside of the supporting part 130 and the bottom surface of the receiving plate 100 is placed on the supporting part 130. The supporting part 130 is sleeved on the rotating shaft.

[0080] Furthermore, a bolt hole is provided on one side of the supporting portion 130 connected to the rotating shaft, and the bolt hole is fixedly connected to the rotating shaft by screw connection. A plurality of bolt holes are provided on one side of the supporting portion 130 that carries the receiving plate 100, and a plurality of bolt holes 150 are provided around the shaft hole 140 of the receiving plate 100, and the bolt holes of the supporting portion 130 and the bolt holes 150 of the receiving plate 100 are fixedly connected by screw connection, thereby achieving fixed connection between the supporting portion 130 and the rotating shaft, and fixed connection between the receiving plate 100 and the supporting portion 130.

[0081] In a possible implementation, the spring limiting device is further provided with a positioning ring 310; the positioning ring 310 is buckled on the top surface of the rotating disk 300 and is located at the edge of the rotating disk 300, and the positioning ring 310 is arranged concentrically with the rotating disk 300. Here, it should be noted that since the spring limiting device needs to be inserted into the middle hole of the inlet flange 900, in order to avoid collision between the rotating disk 300 and the inlet flange 900 during the fixing process of the spring limiting device and the inlet flange 900, resulting in deformation of the inlet flange 900 or the rotating disk 300, a positioning ring 310 is arranged at the edge of the rotating disk 300.

[0082] Furthermore, a groove is provided on one side of the positioning ring 310 connected to the rotating disk 300. When the positioning ring 310 is buckled on the rotating disk 300, the edge of the rotating disk 300 is embedded in the groove of the positioning ring 310. The outer diameter of the positioning ring 310 has a value range of: The maximum thickness of the positioning ring 310 has a value range of:

[0083] The outer diameter of the positioning ring 310 ranges from 139.3 mm to 139.7 mm, the inner diameter of the positioning ring 310 ranges from 139.3 mm to 139.7 mm, and the maximum thickness of the positioning ring 310 ranges from 107.8 mm to 108.2 mm.

[0084] Preferably, the outer diameter of the positioning ring 310 is 139.6 mm, the inner diameter of the positioning ring 310 is 108 mm, and the maximum thickness of the positioning ring 310 is 12 mm.

[0085] In a possible implementation, the first supporting device includes more than two first supporting rods 110, and the more than two first supporting rods 110 are arranged between the fixing plate 400 and the receiving plate 100. Figure 3As shown, threaded holes are provided at both end surfaces of the first support rod 110, a bolt hole 160 is provided at the receiving plate 100, and a bolt hole 450 is provided at the fixed plate 400. The threaded holes at both ends of the first support rod 110 correspond to the bolt holes 450 of the fixed plate 400 and the bolt holes 160 of the receiving plate 100, respectively. The screws 111 are screwed into the bolt holes 450 of the fixed plate 400 and the threaded holes on the top surface of the first support rod 110 to realize the connection and fixation between the fixed plate 400 and the first support rod 110. The screws 111 are screwed into the bolt holes 160 of the receiving plate 100 and the threaded holes on the bottom surface of the first support rod 110 to realize the connection and fixation between the receiving plate 100 and the first support rod 110.

[0086] Furthermore, four first support rods 110 are provided, and the distances between the four first support rods 110 and the center of the receiving plate 100 are the same. The main body of the first support rod 110 is cylindrical, and the end face diameter thereof ranges from 11.8 mm to 12.2 mm.

[0087] like Fig. 9 , Fig.10 and Fig.11 As shown, a hydrogen pump front valve that can be adapted and installed in the present application is mainly composed of an inlet flange 900, a valve seat 920, a housing, a ball 940, and a rotating assembly. The valve seat 920 is arranged inside the housing and extends out of the housing; the main structure of the inlet flange 900 is as shown Fig.10 As shown, 20 spring mounting holes 960 are arranged around the inlet flange 900, and 20 small springs 910 are sequentially placed in the 20 spring mounting holes 960. Fig. 9 As shown, the inlet flange 900 is installed on one side of the housing, and 20 small springs 910 are arranged around the inlet flange 900 and the valve seat 920. Fig. 9 The figure shows the closed state of the hydrogen pump front valve. Under the elastic force of 20 small springs 910, the valve seat 920 contacts the ball 940 and presses against the ball 940, so that the ball 940 cannot rotate. When the hydrogen pump front valve is opened, gas is blown into the valve port 930 to pass control gas to the double bellows assembly of the valve seat 920, which acts between the outer cavity of the inner bellows and the inner cavity of the outer bellows of the valve seat 920, overcomes the deformation force of the 20 small springs 910 and the deformation force of the inner and outer cavity bellows of the valve seat 920, lifts the valve seat 920, and loosens the ball 940 so that the ball 940 can rotate. The rotating assembly above the hydrogen pump front valve then drives the ball 920 to rotate, thereby realizing the opening and closing of the hydrogen pump front valve.

[0088] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An auxiliary tool for installing a valve spring, characterized in that: Used for installing the spring in the front valve of the pump, including: a receiving plate, a spring limit device and more than two locking devices; The receiving plate is suitable for bearing the inlet flange of the pump front valve, and more than two locking devices are arranged on the side wall of the receiving plate, and are suitable for locking the inlet flange on the receiving plate; The spring limiting device is arranged on the top surface of the receiving plate through the first supporting device, and the spring limiting device is suitable for penetrating into the inner side of the inlet flange through the middle hole of the inlet flange; The spring limiting device is provided with more than two spring pressing plates, the number of which is the same as the number of spring mounting holes arranged on the inner side of the inlet flange. The more than two spring pressing plates are telescopically arranged on the spring limiting device, and are suitable for when the more than two spring pressing plates are in an extended state, the more than two spring pressing plates respectively cover the more than two spring mounting holes to fix the springs in the spring mounting holes in the spring mounting holes.

2. The auxiliary tool for valve spring installation according to claim 1, characterized in that: A second supporting device is provided on the bottom surface of the receiving tray.

3. The valve spring installation auxiliary tool according to claim 1, characterized in that: The locking device comprises: a locking seat and a locking pin; One side of the locking seat is connected to the receiving plate, and the locking pin is movably arranged on the locking seat and can move in a direction toward or away from the inlet flange.

4. The auxiliary tool for valve spring installation according to claim 3, characterized in that: The locking device is provided with two; The two locking devices are arranged oppositely on the side walls of the receiving plate.

5. The auxiliary tool for valve spring installation according to any one of claims 1 to 4, characterized in that: Two positioning pins are provided on one side of the receiving plate where the inlet flange is mounted, which are suitable for positioning the inlet flange when it is installed.

6. The valve spring installation auxiliary tool according to claim 1, characterized in that: The spring limiting device comprises: a rotating disk, a rotating shaft and a fixed disk; The fixed disk is arranged above the receiving disk through the first supporting device; the rotating disk is rotatably arranged above the fixed disk, and a gap is provided between the rotating disk and the fixed disk; The rotating shaft passes through the centers of the rotating disk, the fixed disk and the receiving disk in sequence, and the rotating shaft is fixedly connected to the rotating disk, and is suitable for driving the rotating disk to rotate when the rotating shaft rotates; More than two spring pressing sheets are arranged in the gap between the rotating disk and the fixed disk, and the more than two spring pressing sheets are rotatably connected to the rotating disk.

7. The valve spring installation auxiliary tool according to claim 6, characterized in that: Also includes: Two rotating handles; The two rotating handles are respectively arranged at two ends of the rotating shaft.

8. The valve spring installation auxiliary tool according to claim 7, characterized in that: There are 20 spring pressing plates, and the 20 spring pressing plates are arranged in sequence along the annular structure of the rotating disk.

9. The valve spring installation auxiliary tool according to claim 6, characterized in that: Also includes: Supporting part; The supporting part is sleeved on the outer side of the rotating shaft, and the receiving plate is placed on the supporting part.

10. The valve spring installation auxiliary tool according to claim 6, characterized in that: The spring limiting device is also provided with a positioning ring; The positioning ring is buckled on the top surface of the rotating disk and is located at the edge of the rotating disk.

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