Quick release type engine intake and exhaust door lock clamp structure

Abstract

The invention relates to the field of engine valve rod installation, in particular to a quick-release type engine intake and exhaust door lock clamp structure. The quick release type engine intake and exhaust door lock clamp structure comprises a valve rod, a first ring groove is formed in the valve rod, and a spring seat corresponding to the position of the first ring groove is further arranged on the valve rod; the spring seat is of a split type design and is composed of a positioning part and an adjusting part. A plurality of annularly-distributed locking assemblies are further arranged in the spring seat, and the locking assemblies are movably installed in the positioning part and further in transmission connection with the adjusting part. According to the quick-release type engine intake and exhaust door lock clamp structure, a traditional integrated spring seat is changed into a split structure, the spring seat of the split structure can serve as a locking assembly installation foundation, the spring seat and a locking assembly jointly form a clamping structure, the whole structure is more compact, the occupied space is smaller, and the structure is more compact. And the valve rod can be quickly disassembled and assembled.

Description

Technical Field

[0001] This invention relates to the field of engine valve stem installation, and more particularly to a quick-release engine intake and exhaust valve locking structure. Background Technology

[0002] The valve stem locking mechanism is a mature and reliable valve fixing connection structure in fuel engines. The overall structure includes a locking clip, a spring seat, and a valve stem. The locking clip typically consists of two identical semi-cylindrical clips, which combine to form an approximately cylindrical structure. The inner surface of the locking clip has raised rings that match the locking grooves at the top of the valve stem, leaving a gap. The spring seat has a conical hole at its center, allowing the outer ring of the locking clip to fall into the conical hole within the valve spring seat ring. The valve spring pushes upwards against the spring seat ring, thus completing the secure connection between the valve stem head and the spring seat ring. The valve stem has annular grooves at its top that match the inner annular grooves of the locking clip. The lower part of the valve stem has a disc-shaped conical surface that mates with the conical surface of the valve seat ring embedded in the cylinder head, forming a sealing ring.

[0003] During assembly and installation, the valve spring must first be compressed to allow for the installation or removal of the locking clip. Then, using the pressure provided by the valve locking clip press-fitting machine, the valve locking clip is pressed onto the valve stem. During the press-fitting process, the press head depresses, causing the valve spring and valve seat to move down to the set position. The valve stem is inserted into the press head, aligning the inner annular groove of the locking clip with the annular groove on the valve stem head. Then, the jaws tighten, and the locking clip grips the valve stem from both sides, pushing the locking clip into the annular groove on the valve stem head. Finally, the press head retracts, and the spring seat moves upward under the restoring force of the spring, with the inner tapered hole of the seat fitting onto the outer side of the locking clip, completing the locking clip press-fitting process.

[0004] However, the following defects and shortcomings still exist in the application implementation process:

[0005] The assembly and connection between this type of locking structure and the valve stem is relatively complicated, making it impossible to quickly assemble and disassemble the valve stem.

[0006] Therefore, it is necessary to provide a new quick-release engine intake and exhaust valve lock clip structure to solve the above-mentioned technical problems. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a quick-release engine intake and exhaust valve locking structure.

[0008] The quick-release engine intake and exhaust valve locking structure provided by the present invention includes a valve stem, a first annular groove on the valve stem, and a spring seat corresponding to the position of the first annular groove on the valve stem.

[0009] The spring seat is a split design, consisting of a positioning part and an adjustment part;

[0010] The spring seat also has multiple locking components arranged in a ring. The locking components are movably installed inside the positioning part and are also connected to the adjustment part in a transmission manner. The adjustment part drives each locking component to move synchronously.

[0011] The locking component includes an arc-shaped clamping block, and when multiple clamping blocks come together, they can form a locking ring fitted inside the first annular groove.

[0012] Preferably, the outer circumferential wall of the valve stem is further provided with a plurality of annularly distributed, radially extending first locking grooves, which are connected to the first annular grooves.

[0013] Preferably, the positioning part includes a positioning disk, and a concentric first positioning seat is integrally connected to the lower end of the positioning disk. A second positioning seat is bolted to the lower end of the first positioning seat. The positioning disk, the first positioning seat, and the second positioning seat all have holes for the valve stem to pass through.

[0014] Preferably, multiple annularly distributed short grooves with the same width as the first annular groove are provided on the inner wall of the hole on the opposite side of the first positioning seat and the second positioning seat. A long groove is provided on the other side of the short groove, and a second locking groove corresponding to the position and number of the first locking groove is provided at the inner bottom and inner top of the short groove.

[0015] The clamping block is located inside the short groove and can move from inside the short groove to inside the first annular groove.

[0016] Preferably, the upper end of the positioning disk is provided with a concentric mounting groove, the bottom of the mounting groove is provided with a plurality of connected long grooves and positioning slides arranged radially along the positioning disk, and a concentric positioning cylinder is welded and fixed to the bottom of the mounting groove, and a torsion spring is sleeved on the outside of the positioning cylinder.

[0017] Preferably, the adjusting part includes an adjusting plate, which is embedded in the mounting groove and has a hole for the positioning cylinder to pass through, so that the torsion spring abuts against the adjusting plate;

[0018] The lower end of the adjustment plate is provided with positioning grooves corresponding to the position and number of positioning slides. The positioning grooves are arc-shaped, and a hexagonal ring block is welded and fixed to the upper end of the adjustment plate.

[0019] Preferably, a ring rail is integrally connected to the inner circumference of the mounting groove, and the outer circumference of the adjusting disc has a second ring groove, with the ring rail embedded inside the second ring groove.

[0020] Preferably, both the upper and lower ends of the clamping block are integrally connected with locking sliders. The locking sliders are embedded in the second locking groove and can slide into the first locking groove. A positioning slide plate that slides inside the long groove is also welded and fixed on one side of the clamping block. A transmission pin is vertically welded on the positioning slide plate. The transmission pin passes through the positioning plate along the positioning slide and extends to the positioning groove at the lower end of the adjusting plate.

[0021] Preferably, the distance from the inner wall to the outer wall of the clamping block is greater than the depth of the first annular groove, so that when the clamping block is embedded in the first annular groove, it does not disengage from the short groove, and the locking slider is simultaneously located in the first locking groove and the second locking groove.

[0022] Compared with related technologies, the quick-release engine intake and exhaust valve locking structure provided by the present invention has the following advantages:

[0023] 1. The traditional one-piece spring seat is replaced with a split structure. The split spring seat can serve as the mounting base for the locking component, so that the spring seat and the locking component together form a clamping structure, making the whole structure more compact and occupying less space. At the same time, it can achieve quick clamping and fixing of the valve stem.

[0024] 2. In the locking assembly, the clamping block can move radially relative to the valve stem to move from the positioning part to the inside of the first annular groove. When the clamping blocks in multiple locking assemblies are all inside the first annular groove, they together form a locking ring. The locking ring is sleeved inside the first annular groove, thereby achieving stable limitation between the valve stem and the spring seat, so as to achieve clamping and fixing of the valve stem.

[0025] 3. The adjusting unit and each locking component are connected by a transmission mechanism, allowing the adjusting unit to drive the locking components to move synchronously. This reduces the difficulty of adjusting the locking components and makes clamping and fixing the valve stem more convenient and faster.

[0026] 4. The valve stem also has a first locking groove that connects to the first annular groove, while the positioning plate and the first positioning seat have a second locking groove. The clamping block has a locking slider. When the clamping block is inside the first annular groove, the locking slider is simultaneously inside the first locking groove and the second locking groove, which makes the clamping block more stable and the valve stem is better restrained, thus making the stability between the two higher. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a preferred embodiment of the quick-release engine intake and exhaust valve locking structure provided by the present invention.

[0028] Figure 2 As shown in this invention Figure 1 A structural diagram of the other side;

[0029] Figure 3This is a schematic diagram of the valve stem structure shown in the present invention;

[0030] Figure 4 As shown in this invention Figure 3 Enlarged structural diagram at point A;

[0031] Figure 5 This is a schematic diagram of the structure of the spring seat and valve stem connection shown in this invention. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the structure of the spring seat and valve stem connection shown in this invention. Figure 2 ;

[0033] Figure 7 This is a schematic diagram of the positioning part shown in the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the adjustment part shown in the present invention;

[0035] Figure 9 This is a schematic diagram of the locking component shown in the present invention.

[0036] The diagram labels are: 1. Valve stem; 11. First annular groove; 12. First locking groove;

[0037] 2. Spring seat;

[0038] 21. Positioning part; 211. Positioning plate; 212. First positioning seat; 213. Second positioning seat; 214. Short groove; 215. Second locking groove; 216. Long groove; 217. Positioning slide; 218. Mounting groove; 219. Ring rail; 2110. Positioning cylinder; 2111. Torsion spring;

[0039] 22. Adjustment section; 221. Adjustment disc; 222. Second annular groove; 223. Positioning slide groove; 224. Hexagonal ring block;

[0040] 3. Locking component; 31. Clamping block; 32. Locking slider; 33. Positioning slide plate; 34. Transmission pin. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] Please see Figures 1 to 9The present invention provides a quick-release engine intake and exhaust valve locking structure, which includes a valve stem 1, a spring seat 2, and a locking component 3.

[0044] For valve stem 1;

[0045] Please see Figures 1 to 3 The valve stem 1 has a first annular groove 11 and a plurality of annularly distributed, radially extending first locking grooves 12 are formed on its outer circumference, and the first locking grooves 12 are connected to the first annular groove 11.

[0046] It should be noted that the lower part of the valve stem 1 has a disc-shaped conical surface, which cooperates with the conical surface of the valve seat ring embedded in the cylinder head to form a sealing ring to control the opening and closing of the air inlet and outlet. The upper part retains the first ring groove 11 for assembly connection with the locking structure. The first locking groove 12 on the valve stem 1 is subsequently assembled and connected with the locking assembly 3 to increase the stability of the valve stem 1 after installation.

[0047] The spring seat 2 is a split design, consisting of a positioning part 21 and an adjustment part 22;

[0048] Please see Figures 5 to 7 The positioning part 21 includes a positioning disk 211, and a concentric first positioning seat 212 is integrally connected to the lower end of the positioning disk 211. A second positioning seat 213 is bolted to the lower end of the first positioning seat 212. The positioning disk 211, the first positioning seat 212 and the second positioning seat 213 all have holes through which the air valve rod 1 passes.

[0049] On the side opposite to the first positioning seat 212 and the second positioning seat 213 and on the inner wall of the hole, a plurality of annularly distributed short grooves 214 with the same width as the first annular groove 11 are provided. On the other side of the short grooves 214, long grooves 216 are provided. At the inner bottom and inner top of the short grooves 214, second locking grooves 215 corresponding to the position and number of the first locking grooves 12 are provided.

[0050] The upper end of the positioning plate 211 is also provided with a concentric mounting groove 218. The bottom of the mounting groove 218 is provided with multiple connected long grooves 216 and a positioning slide 217 arranged radially along the positioning plate 211. The bottom of the mounting groove 218 is also welded and fixed with a concentric positioning cylinder 2110. A torsion spring 2111 is sleeved on the outside of the positioning cylinder 2110.

[0051] It should be noted that the spring seat 2 and the locking component 3 together form the locking clip structure, with the spring seat 2 serving as the carrier structure. This design makes the entire structure more compact and occupies less space.

[0052] The positioning part 21 includes a positioning disk 211, a first positioning seat 212 and a second positioning seat 213. The first positioning seat 212 and the second positioning seat 213 are both cylindrical structures with the same diameter. Together with the positioning disk 211, they form the structure in the spring seat 2 used to position the spring, so it will not affect the installation and use of the spring.

[0053] Because both the first positioning seat 212 and the second positioning seat 213 have short grooves 214, second locking grooves 215 and long grooves 216 on opposite sides, when they are assembled and fixed, the short grooves 214, second locking grooves 215 and long grooves 216 of the two are connected to each other to form a groove structure for installing the locking component 3, so as to achieve stable limitation of the locking component 3 and thus meet the usage requirements. At the same time, because the first positioning seat 212 and the second positioning seat 213 are detachably connected, it is also convenient to disassemble and assemble the locking component 3, which is conducive to its inspection and replacement.

[0054] Please see Figure 8 The adjustment part 22 includes an adjustment plate 221, which is embedded in the mounting groove 218 and has a hole for the positioning cylinder 2110 to pass through, so that the torsion spring 2111 abuts against the adjustment plate 221.

[0055] The lower end of the adjusting plate 221 is provided with positioning grooves 223 corresponding to the position and number of positioning slides 217. The positioning grooves 223 are arc-shaped, and a hexagonal ring block 224 is welded and fixed to the upper end of the adjusting plate 221.

[0056] It should be noted that: for the adjustment part 22, its adjustment plate 221 is located inside the mounting groove 218 to achieve a stable connection with the positioning plate 211. At the same time, a ring rail 219 and a second ring groove 222 are added between the mounting groove 218 and the adjustment plate 221 to make the connection between the two more compact.

[0057] The adjusting disc 221 is also sleeved on the outside of the positioning cylinder 2110. A torsion spring 2111 is fixed on the positioning cylinder 2110. The torsion spring 2111 presses against the adjusting disc 221 and always exerts a spring force on the adjusting disc 221. There is also a hexagonal ring block 224 at the upper end of the adjusting disc 221. Therefore, the adjusting disc 221 can be rotated by turning the hexagonal ring block 224 with a wrench or other tools to overcome the spring force of the torsion spring 2111.

[0058] For locking component 3;

[0059] Please see Figure 9The locking component 3 includes an arc-shaped clamping block 31, which is located inside the short groove 214 and can move from inside the short groove 214 to inside the first annular groove 11. The upper and lower ends of the clamping block 31 are integrally connected with locking sliders 32. The locking sliders 32 are embedded in the second locking groove 215 and can slide into the first locking groove 12. A positioning slide plate 33 that slides inside the long groove 216 is also welded and fixed on one side of the clamping block 31. A transmission pin 34 is vertically welded on the positioning slide plate 33. The transmission pin 34 passes through the positioning disk 211 along the positioning slide 217 and extends to the positioning slide groove 223 at the lower end of the adjusting disk 221.

[0060] The distance from the inner wall to the outer wall of the clamping block 31 is greater than the depth of the first annular groove 11, so that when the clamping block 31 is embedded in the first annular groove 11, it does not disengage from the short groove 214, and the locking slider 32 is simultaneously located inside the first locking groove 12 and the second locking groove 215.

[0061] It should be noted that: for the assembly connection between the locking component 3 and the positioning part 21, the clamping block 31, which is the main positioning structure, is located inside the short groove 214. Both the upper and lower ends of the clamping block 31 have locking sliders 32 that are integrally connected. The locking sliders 32 slide inside the second locking groove 215. The clamping block 31 also has a positioning slide plate 33 on one side. The positioning slide plate 33 slides inside the long groove 216. Therefore, the entire locking component 3 is limited by the short groove 214, the second locking groove 215 and the long groove 216, which makes it more stable. At the same time, the entire locking component 3 has a radial displacement floating amount.

[0062] Regarding the connection between the locking assembly 3 and the adjusting part 22, a transmission pin 34 is welded onto the positioning slide plate 33. The transmission pin 34 extends along the positioning slide 217 through the positioning plate 211 and into the mounting groove 218. At the same time, this end is located inside the positioning slide groove 223 at the lower end of the adjusting plate 221. Therefore, when the adjusting plate 221 rotates, since its positioning slide groove 223 is arc-shaped, it will directly exert a force on the transmission pin 34, so that the entire locking assembly 3 will generate a radial position, so that the clamping block 31 moves from inside the short groove 214 into the first annular groove 11, thereby realizing the connection between the locking assembly 3 and the valve stem 1. At the same time, the locking sliders 32 at the upper and lower ends of the clamping block 31 move into the first locking groove 12, making the connection between the clamping block 31 and the valve stem 1 more stable.

[0063] Because the distance from the inner wall to the outer wall of the clamping block 31 is greater than the depth of the first annular groove 11, after the clamping block 31 enters the first annular groove 11 and locks the valve stem 1, a part of it is still inside the short groove 214, while the locking slider 32 is simultaneously inside the first locking groove 12 and the second locking groove 215, which makes the entire locking structure more resistant to pressure and further enhances the restraining effect on the valve stem 1.

[0064] It should also be noted that under normal conditions, the adjusting disc 221 can drive the entire locking assembly 3 to move automatically through the elastic force of the torsion spring 2111, so that the clamping block 31 extends into the first annular groove 11. Therefore, when assembling and fixing the spring seat 2 and the valve stem 1, the adjusting disc 221 is first rotated with a wrench to drive the clamping block 31 in the locking assembly 3 into the short groove 214. At this time, the spring seat 2 can be fitted onto the valve stem 1. After the spring seat 2 aligns with the first annular groove 11, the external force acting on the adjusting disc 221 can be removed, so that the locking assembly 3 can be reset by the elastic force of the torsion spring 2111. Therefore, the stable connection between the locking assembly 3 and the valve stem 1 can be guaranteed.

[0065] The specific operating procedure of the device is as follows: First, use a wrench to rotate the adjusting plate 221 to drive the clamping block 31 in the locking assembly 3 into the short groove 214. At this time, the holes on the positioning plate 211, the first positioning seat 212, and the second positioning seat 213 are fully opened. Then, the valve stem 1 can be passed through the hole through the spring seat 2 to achieve the initial connection between the two. Then, the position of the spring seat 2 is adjusted so that it corresponds to the first annular groove 11. After precise alignment, the external force acting on the adjusting plate 221 can be removed. The elastic force of the torsion spring 2111 drives the adjusting plate 221 to rotate in the opposite direction, thereby driving the locking assembly 3 to move in the opposite direction, so that the clamping block 31 moves into the first annular groove 11. Multiple clamping blocks 31 form a locking ring to achieve the locking and fixing of the valve stem 1.

[0066] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A quick-release engine intake and exhaust valve locking structure, comprising a valve stem (1), the valve stem (1) having a first annular groove (11), and a spring seat (2) corresponding to the position of the first annular groove (11) also provided on the valve stem (1), characterized in that: The spring seat (2) is a split design, consisting of a positioning part (21) and an adjustment part (22); The spring seat (2) also has a plurality of ring-shaped locking components (3). The locking components (3) are movably installed inside the positioning part (21) and are also connected to the adjustment part (22) for transmission. The adjustment part (22) drives each locking component (3) to move synchronously. The locking component (3) includes an arc-shaped clamp (31), and when multiple clamps (31) come together, they can form a locking ring fitted inside the first annular groove (11).

2. The quick-release engine intake and exhaust valve locking structure according to claim 1, characterized in that, The valve stem (1) is also provided with a plurality of annularly distributed, radially extending first locking grooves (12) on its outer circumference, and the first locking grooves (12) are connected to the first annular grooves (11).

3. The quick-release engine intake and exhaust valve locking structure according to claim 2, characterized in that, The positioning part (21) includes a positioning disk (211), and a concentric first positioning seat (212) is integrally connected to the lower end of the positioning disk (211). A second positioning seat (213) is bolted to the lower end of the first positioning seat (212). The positioning disk (211), the first positioning seat (212) and the second positioning seat (213) all have holes through which the air valve rod (1) passes.

4. The quick-release engine intake and exhaust valve locking structure according to claim 3, characterized in that, On the side opposite to the first positioning seat (212) and the second positioning seat (213) and on the inner wall of the hole, a plurality of annularly distributed short grooves (214) with the same width as the first annular groove (11) are provided. On the other side of the short grooves (214), long grooves (216) are provided. At the inner bottom and inner top of the short grooves (214), second locking grooves (215) corresponding to the position and number of the first locking grooves (12) are provided. The clamping block (31) is located inside the short groove (214) and can be moved from inside the short groove (214) to inside the first annular groove (11).

5. The quick-release engine intake and exhaust valve locking structure according to claim 4, characterized in that, The upper end of the positioning disk (211) is also provided with a concentric mounting groove (218). The bottom of the mounting groove (218) is provided with a plurality of connected long grooves (216) and a positioning slide (217) arranged radially along the positioning disk (211). The bottom of the mounting groove (218) is also welded and fixed with a concentric positioning cylinder (2110). A torsion spring (2111) is sleeved on the outside of the positioning cylinder (2110).

6. The quick-release engine intake and exhaust valve locking structure according to claim 1, characterized in that, The adjustment part (22) includes an adjustment plate (221), which is embedded in the mounting groove (218) and has a hole for the positioning cylinder (2110) to pass through, so that the torsion spring (2111) abuts against the adjustment plate (221); The lower end of the adjustment plate (221) is provided with positioning grooves (223) corresponding to the position and number of positioning slides (217). The positioning grooves (223) are arc-shaped, and a hexagonal ring block (224) is welded and fixed to the upper end of the adjustment plate (221).

7. The quick-release engine intake and exhaust valve locking structure according to claim 6, characterized in that, A ring rail (219) is integrally connected to the inner circumference of the mounting groove (218), and the outer circumference of the adjusting disc (221) has a second ring groove (222), and the ring rail (219) is embedded in the second ring groove (222).

8. The quick-release engine intake and exhaust valve locking structure according to claim 1, characterized in that, The clamping block (31) is integrally connected to the upper and lower ends with locking sliders (32). The locking sliders (32) are embedded in the second locking groove (215) and can slide into the first locking groove (12). A positioning slide plate (33) that slides in the long groove (216) is also welded and fixed on one side of the clamping block (31). A transmission pin (34) is vertically welded on the positioning slide plate (33). The transmission pin (34) passes through the positioning plate (211) along the positioning slide (217) and extends to the positioning groove (223) at the lower end of the adjusting plate (221).

9. The quick-release engine intake and exhaust valve locking structure according to claim 8, characterized in that, The distance from the inner wall to the outer wall of the clamping block (31) is greater than the depth of the first annular groove (11), so that when the clamping block (31) is embedded in the first annular groove (11), it does not disengage from the short groove (214), and the locking slider (32) is simultaneously located inside the first locking groove (12) and the second locking groove (215).

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