Limiting regulator and internal combustion engine camshaft transfer device

Abstract

The utility model provides a limiting adjuster and an internal combustion engine camshaft transfer device using the same. The limiting adjuster is provided with a first main body piece and a second main body piece, can be used for installing the cam shaft limiting plate on the connecting rod, and can be matched with the rotating handle through a bolt on the second main body piece to move and lock the cam shaft limiting plate on the connecting rod, so that the position of the cam shaft limiting adjusting plate can be adjusted. According to the internal combustion engine camshaft transfer device, the positions of the camshaft limiting plates can be adjusted, so that the positions of the camshaft limiting plates on the connecting rods can be adjusted according to the lengths of camshafts of different types, and the distance between the two camshaft limiting plates is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment processing and manufacturing technology, specifically to a limit adjuster and an internal combustion engine camshaft transfer device using the limit adjuster. Background Technology

[0002] The camshaft is an important component in an internal combustion engine. Its main function is to precisely control the timing, duration, and degree of valve opening and closing, ensuring that intake and exhaust occur in the correct engine firing order.

[0003] In the process of manufacturing internal combustion engines, camshafts need to be transported from the warehouse to the production line by a trolley. Therefore, a camshaft transfer trolley was designed, and its specific structure can be found in Chinese invention patent application with publication number CN113787499A.

[0004] However, during the use of the aforementioned camshaft transfer cart, the inventors discovered the following problems: the placement plates are fixed to the fixing rod by a fixing mechanism (including a first fixing component, a second fixing component, and several bolts). This results in a relatively fixed position between the placement plates on each camshaft transfer cart, generally for a specific model of camshaft. However, since there are multiple models of internal combustion engines produced, and different models use camshafts with different specifications and models, the aforementioned camshaft transfer cart is incompatible with camshafts of different models and drawing numbers. This leads to a large number of vehicles required for on-site delivery, occupying a large amount of space, hindering material turnover, and resulting in high operating and maintenance costs. Utility Model Content

[0005] To address the problem of existing camshaft transfer vehicles being incompatible with different camshaft models, this application provides a limit adjuster for use in an internal combustion engine camshaft transfer device.

[0006] A limit adjuster includes: a first main body component, wherein a first through hole is provided in the middle of the first main body component, and a plurality of first screw mounting holes are provided around the first through hole; a second main body component, wherein a second through hole corresponding to the first through hole and a second screw mounting hole corresponding to the first screw mounting hole; and a screw, wherein the screw passes through the first screw mounting hole and the corresponding second screw mounting hole to realize the connection between the first main body component and the second main body component;

[0007] The second main body component is also provided with a through groove, which penetrates the upper and lower surfaces of the second main body component and extends from the outer periphery of the second main body component to the second circular through hole; with the through groove as the center, the parts on both sides of the through groove are respectively a first through groove structure component and a second through groove structure component, and a straight through hole is provided from the first through groove structure component to the second through groove structure component;

[0008] It also includes bolts, which are inserted through the through hole, with the first end of the bolt fixedly connected to the second through groove structure and the second end of the bolt protruding from the surface of the first through groove structure.

[0009] It also includes a rotating handle, which has an internal thread and is mounted on the bolt and can rotate and move along the external thread of the bolt.

[0010] The limit adjuster provided in this application embodiment is fixedly connected to the second through-slot structure with bolts. By adjusting the rotating handle, the rotating handle can be moved along the bolt. When the rotating handle moves towards the second through-slot structure, it presses against the first through-slot structure, causing the first through-slot structure to move towards the second through-slot structure, thus reducing the width of the through-slot and consequently reducing the diameter of the second through-hole. This locks the second main body onto the device where the limit adjuster is fixed, achieving the effect of locking the limit adjuster as a whole. When it is necessary to adjust the position of the limit adjuster on the device it is installed on, the rotating handle can be turned to move it away from the second through-slot structure. This causes the first through-slot structure to recover its shape under the action of elasticity, thereby increasing the diameter of the second through-hole and changing the limit adjuster from a locked state to a movable state. The limit adjuster provided in this application does not require special adjustment tools, making adjustment convenient and flexible. At the same time, in its locked state, the entire arc surface of the second circular through hole is fixed to the contacting device, increasing the friction and enabling the limit adjuster to be in a very stable locked state, maintaining its positional stability.

[0011] Preferably, it further includes a buffer pad, which is annular and is fitted inside the through hole formed by the first through hole and the second through hole.

[0012] This application also provides an internal combustion engine camshaft transfer device, including:

[0013] Frame: The bottom of the frame is equipped with wheels;

[0014] The first fixed bracket and the second fixed bracket are fixedly connected to the frame at their bottoms, and the first fixed bracket and the second fixed bracket are arranged in parallel.

[0015] A first connecting rod and a second connecting rod are arranged in parallel between the first fixed bracket and the second fixed bracket;

[0016] At least two camshaft limiting plates are provided, each camshaft limiting plate being elongated and having several camshaft placement slots on one side; each camshaft limiting plate has a first limiting block mounting hole and a second limiting block mounting hole at both ends.

[0017] Limit adjuster;

[0018] The camshaft limiting plate passes through the first limiting block mounting hole and the second limiting block mounting hole respectively on the first connecting rod and the second connecting rod, and is fixed on the first connecting rod and the second connecting rod respectively by the limiting adjuster, so that the camshaft placement slots on the two camshaft limiting plates arranged parallel on the first connecting rod and the second connecting rod face away from the frame, and the corresponding camshaft placement slots are on the same horizontal plane.

[0019] The internal combustion engine camshaft transfer device provided in this application mounts a camshaft limiting plate onto a connecting rod via a limit adjuster. The position of the camshaft limiting plate on the connecting rod can be adjusted using the limit adjuster. This allows the relative distance between the two camshaft limiting plates to be adjusted according to the different camshaft sizes used in different internal combustion engine models, enabling the internal combustion engine camshaft transfer device provided in this application to handle all camshaft models required in the production workshop. This avoids the need to purchase various camshaft transport vehicles of different sizes and models. On the one hand, it saves on purchase and maintenance costs; on the other hand, it avoids various small vehicles occupying space in the production workshop and causing chaos.

[0020] Preferably, the camshaft placement groove includes a flat portion, an arcuate portion, and a hook portion. The first end of the flat portion is connected to the upper side of the camshaft limiting plate, the second end of the flat portion is connected to the first end of the arcuate portion, the second end of the arcuate portion is connected to the first end of the hook portion, and the second end of the hook portion is connected to the upper side of the camshaft limiting plate. The hook portion and the upper side of the camshaft limiting plate form a hook facing the flat portion.

[0021] Preferably, the camshaft limiting plate is made of nylon.

[0022] Preferably, the frame includes a first crossbeam and a second crossbeam, the first crossbeam and the second crossbeam are arranged in parallel, omnidirectional wheels are respectively provided at the bottom of both ends of the first crossbeam and the second crossbeam, and a support plate is provided between the first crossbeam and the second crossbeam.

[0023] Preferably, the first fixed bracket and the second fixed bracket have the same structure, both including a first waist rod, a second waist rod and a top rod, the first ends of the first waist rod and the second waist rod are fixedly connected to the frame, and the second ends of the first waist rod and the second waist rod are fixedly connected to the top rod; the first waist rod, the second waist rod and the top rod form an isosceles trapezoid that is wider at the bottom and narrower at the top;

[0024] In the first fixed bracket and the second fixed bracket, the two first waist bars are arranged in parallel, the two second waist bars are arranged in parallel, and the first connecting rod and the second connecting rod are parallel and arranged from top to bottom between the two first waist bars.

[0025] It also includes a third connecting rod and a fourth connecting rod, which are parallel to each other and arranged from top to bottom between the two second waist rods. Two camshaft limiting plates are also arranged parallel to each other on the third connecting rod and the fourth connecting rod.

[0026] Preferably, it further includes a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, and an eighth connecting rod. The fifth and sixth connecting rods are parallel and arranged from top to bottom between the two first waist rods, and the fifth and sixth connecting rods are located below the second connecting rod. Two camshaft limiting plates are also arranged parallel to each other on the fifth and sixth connecting rods.

[0027] The seventh and eighth connecting rods are parallel and arranged from top to bottom between the two second waist rods, and the seventh and eighth connecting rods are located below the fourth connecting rod; two camshaft limiting plates are also arranged parallel to the seventh and eighth connecting rods.

[0028] Preferably, handrails are provided on the two first waist bars and / or the two second waist bars.

[0029] Preferably, a first reinforcing rod is provided between the two top rods, a second reinforcing rod is provided between the first and second waist rods of the first fixed bracket, a third reinforcing rod is provided between the first and second waist rods of the second fixed bracket, and a fourth reinforcing rod is provided between the second and third reinforcing rods. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the internal combustion engine camshaft transfer device in an embodiment of this application;

[0032] Figure 2 for Figure 1 A magnified structural diagram of region A in the middle;

[0033] Figure 3 for Figure 2Front view of the combined state of the first connecting rod, camshaft limit plate, and limit adjuster;

[0034] Figure 4 This is a schematic diagram of the limit adjuster.

[0035] In the diagram: 100, frame; 110, first crossbeam; 120, second crossbeam; 130, caster wheel; 140, support plate; 210, first fixed bracket; 211, first waist bar; 212, second waist bar; 213, top bar; 220, second fixed bracket; 231, first reinforcing bar; 232, second reinforcing bar; 233, third reinforcing bar; 234, fourth reinforcing bar; 310, first connecting rod; 320, second connecting rod; 330, third connecting rod; 340, fourth connecting rod; 350, fifth connecting rod; 360, sixth connecting rod; 370, seventh connecting rod; 380, eighth connecting rod. Connecting rod; 400, Camshaft limiting plate; 410, Camshaft placement groove; 411, Flat part; 412, Arc-shaped part; 413, Hook part; 500, Limit adjuster; 510, First main body component; 511, First through hole; 512, First screw mounting hole; 520, Second main body component; 521, Second through hole; 522, Second screw mounting hole; 523, Through groove; 524, First through groove structure component; 525, Second through groove structure component; 530, Bolt; 540, Rotating handle; 550, Buffer pad; 551, First buffer pad; 552, Second buffer pad; 600, Handrail. Detailed Implementation

[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0037] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0038] In this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the accompanying drawings and specific circumstances.

[0039] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0040] This application provides an internal combustion engine camshaft transfer device for transporting internal combustion engine camshafts from a warehouse to the production line during the internal combustion engine manufacturing process.

[0041] like Figures 1 to 4 As shown, the internal combustion engine camshaft transfer device provided in this application includes a frame 100, which provides a base for mounting various components.

[0042] The frame 100 provided in this embodiment includes a first crossbeam 110 and a second crossbeam 120, which are arranged parallel to each other. Universal casters 130 are respectively provided at the bottom of both ends of the first crossbeam 110 and the second crossbeam 120. A support plate 140 is provided between the first crossbeam 110 and the second crossbeam 120. Components used with the camshaft, such as gears, can be placed on the support plate 140 to maintain the completeness and consistency of the material flow.

[0043] A first fixed bracket 210 and a second fixed bracket 220 are provided on the top of the frame 100. Specifically, the first fixed bracket 210 is provided on the first crossbeam 110, and the second fixed bracket 220 is provided on the second crossbeam 120. The first fixed bracket 210 and the second fixed bracket 220 are arranged in parallel.

[0044] The first fixed bracket 210 and the second fixed bracket 220 can be integrally formed plates. In a preferred embodiment provided in this application, the first fixed bracket 210 and the second fixed bracket 220 have the same structure, both being isosceles trapezoids that are wider at the bottom and narrower at the top. They are both integrally formed, comprising a first waist rod 211, a second waist rod 212, and a top rod 213. The first ends of the first waist rod 211 and the second waist rod 212 are fixedly connected to the first crossbeam 110 or the second crossbeam 120, and the second ends of the first waist rod 211 and the second waist rod 212 are fixedly connected to the top rod 213. In the first fixed bracket 210 and the second fixed bracket 220, the two first waist rods 211 are arranged in parallel, and the two second waist rods 212 are arranged in parallel. The isosceles trapezoidal frame structure of the first and second fixed brackets reduces the weight of the fixed brackets, thereby reducing the overall weight of the transfer vehicle. The integrally formed first and second fixed brackets enhance their structure and meet the working requirements for placing the camshaft. In a further preferred embodiment, a first reinforcing rod 231 is provided between the two top rods 213, a second reinforcing rod 232 is provided between the first waist rod 211 and the second waist rod 212 of the first fixed bracket 210, a third reinforcing rod 233 is provided between the first waist rod 211 and the second waist rod 212 of the second fixed bracket 220, and a fourth reinforcing rod 234 is provided between the second reinforcing rod 232 and the third reinforcing rod 233. The reinforcing rods connect the first fixed bracket and the second fixed bracket more tightly, thereby enhancing the overall stability of the transfer device.

[0045] The camshaft transfer device for an internal combustion engine provided in this application includes at least a first connecting rod 310 and a second connecting rod 320. The first ends of both the first connecting rod 310 and the second connecting rod 320 are fixedly connected to the first waist rod 211 of the first fixed bracket 210, and the second ends of both are fixedly connected to the first waist rod 211 of the second fixed bracket 220. The first connecting rod 310 and the second connecting rod 320 are arranged parallel to each other. The distance between the first connecting rod 310 and the second connecting rod 320 corresponds to the distance between the two mounting holes of the camshaft limiting plate 400.

[0046] In other preferred embodiments provided in this application, a third connecting rod 330 and a fourth connecting rod 340 are also included. The first ends of both the third connecting rod 330 and the fourth connecting rod 340 are fixedly connected to the second waist rod 212 of the first fixed bracket 210, and the second ends are fixedly connected to the second waist rod 212 of the second fixed bracket 220. The third connecting rod 330 and the fourth connecting rod 340 are arranged parallel to each other. That is, in the preferred embodiment provided in this application, a first camshaft placement surface is formed between the first waist rod 211 of the first fixed bracket 210 and the first waist rod 211 of the second fixed bracket 220, and the first connecting rod 310 and the second connecting rod 320 are disposed on this first camshaft placement surface. Simultaneously, a second camshaft placement surface is formed between the second waist rod 212 of the first fixed bracket 210 and the second waist rod 212 of the second fixed bracket 220, and the third connecting rod 330 and the fourth connecting rod 340 are disposed on this second camshaft placement surface.

[0047] The preferred embodiment provided in this application further includes a fifth connecting rod 350, a sixth connecting rod 360, a seventh connecting rod 370, and an eighth connecting rod 380. The first ends of both the fifth connecting rod 350 and the sixth connecting rod 360 are fixedly connected to the first waist rod 211 of the first fixed bracket 210, and the second ends of both are fixedly connected to the first waist rod 211 of the second fixed bracket 220. The fifth connecting rod 350 and the sixth connecting rod 360 are arranged parallel to each other. The first ends of both the seventh connecting rod 370 and the eighth connecting rod 380 are fixedly connected to the second waist rod 212 of the first fixed bracket 210, and the second ends of both are fixedly connected to the second waist rod 212 of the second fixed bracket 220. The seventh connecting rod 370 and the eighth connecting rod 380 are arranged parallel to each other. In a further preferred embodiment of this application, two layers of camshaft placement positions are provided on both the first camshaft placement surface and the second camshaft placement surface. In this way, the distance between the two camshaft limiting plates 400 of each camshaft placement position can be adjusted independently, allowing for the placement of different camshaft models. This means that a single transfer vehicle can simultaneously transport multiple camshafts of different models. Simultaneously, the first fixed bracket 210 and the second fixed bracket 220 are designed as isosceles trapezoids, ensuring that the camshaft placement surface on each side is inclined. This provides greater stability when the camshaft is placed in the camshaft placement slot and facilitates easier loading and unloading. The angle between the web member and the crossbeam of the frame is set between 60 and 70 degrees.

[0048] At least two camshaft limiting plates 400 are provided between the first connecting rod 310 and the second connecting rod 320. The camshaft limiting plates 400 are preferably integrally formed from nylon material. Nylon camshaft limiting plates 400 have a long service life, are easy to maintain, and will not damage the parts on the camshaft. The camshaft limiting plate 400 is generally elongated, with several camshaft placement slots 410 provided along one of its long sides. When the camshaft limiting plate 400 is installed onto the first connecting rod 310 and the second connecting rod 320, the camshaft placement slots 410 are oriented upwards, i.e., facing the opposite direction to the frame 100. The camshaft placement slot 410 includes a flat portion 411, an arc-shaped portion 412, and a hook portion 413. The first end of the flat portion 411 is connected to the upper side of the camshaft limiting plate 400. The second end of the flat portion 411 is connected to the first end of the arc-shaped portion 412. The second end of the arc-shaped portion 412 is connected to the first end of the hook portion 413. The second end of the hook portion 413 is connected to the upper side of the camshaft limiting plate 400. The hook portion 413 and the upper side of the camshaft limiting plate 400 form a hook facing the flat portion 411. After the camshaft limiting plate 400 is installed, the flat portion 411 of the camshaft placement slot 410 is on top, and the hook portion 413 is on the bottom. The arc-shaped portion 412 connects the flat portion 411 and the hook portion 413. The arc-shaped portion 412 is the part that provides the main support for the camshaft when it is placed on the transfer vehicle, and its arc design provides a larger support contact surface. The flat portion 411 serves as a guide, allowing the camshaft to move along the flat portion when being placed into and removed from the placement slot, facilitating its insertion and removal. The hook portion 413 forms a blocking portion, preventing the camshaft from rolling off the transfer vehicle during transport.

[0049] At least two camshaft limiting plates 400 are provided between the third connecting rod 330 and the fourth connecting rod 340, between the fifth connecting rod 350 and the sixth connecting rod 360, and between the seventh connecting rod 370 and the eighth connecting rod 380. The overall structure of the camshaft limiting plates 400 is described above. Specific designs and adjustments can be made to the dimensions, the location of the camshaft placement slots 410, and the distance between the camshaft placement slots 410. Those skilled in the art can make adaptive adjustments according to actual needs under the guidance of the above description, which will not be elaborated upon here.

[0050] The camshaft limiting plate 400 is mounted on the connecting rod via a limiting adjuster 500. The limiting adjuster 500 adjusts the position of the camshaft limiting plate 400 on the connecting rod, thereby adjusting the distance between at least two parallel camshaft limiting plates 400. The distance between two parallel camshaft limiting plates 400 is adjusted in a timely manner according to the needs of the production line.

[0051] This application provides a preferred embodiment of a limit adjuster 500. It includes: a first main body 510, with a first through hole 511 in the center and a plurality of first screw mounting holes 512 surrounding the first through hole 511; a second main body 520, with a second through hole 521 corresponding to the first through hole 511 and a second screw mounting hole 522 corresponding to the first screw mounting holes 512; screws (not shown), which pass through the first screw mounting holes 512 and the corresponding second screw mounting holes 522 to connect the first main body 510 and the second main body 520; the second main body 520 also includes a through groove 523, which penetrates the upper and lower surfaces of the second main body 520 and extends from the outer periphery of the second main body 520 to the second through hole 521. Centered on the through groove 523, the two sides of the through groove 523 are respectively the first through groove structure 524 and the second through groove structure 525. The distance between the first through groove structure and the second through groove structure can be set according to the actual situation. Generally, when adjusted to the correct position, the inner wall of the second circular through hole is in close contact with the connecting rod, and the contact between the first through groove structure and the second through groove structure is optimal. A straight through hole is provided from the first through groove structure 524 to the second through groove structure 525; it also includes a bolt 530, which passes through the straight through hole. The first end of the bolt 530 is fixedly connected to the second through groove structure 525, and the second end of the bolt 530 protrudes from the surface of the first through groove structure 524; it also includes a rotating handle 540, which is provided with an internal thread. The rotating handle 540 is sleeved on the bolt 530 and can rotate and move along the external thread of the bolt 530.

[0052] The camshaft limiting plate 400 has round holes at both ends for the connecting rod to pass through. At one end of the camshaft limiting plate 400, a first main body 510 and a second main body 520 are respectively provided on both sides. The first main body 510, the camshaft limiting plate 400, and the second main body 520 are integrally assembled and fixed together by screws, and then threaded onto the connecting rod. The same arrangement is provided at the other end of the camshaft limiting plate 400.

[0053] The limit adjuster 500 provided in this embodiment is fixedly connected to the second through-slot structure 525 by bolt 530. By adjusting the rotating handle 540, the rotating handle 540 can move along the bolt 530. When the rotating handle 540 moves towards the second through-slot structure 525, it presses against the first through-slot structure 524, causing the first through-slot structure 524 to move towards the second through-slot structure 525, thus reducing the width of the through-slot 523 and consequently reducing the diameter of the second through-hole 521. The second main body 520 is locked onto the connecting rod that fixes the limit adjuster 500 in this application, thus locking the limit adjuster 500 as a whole. When it is necessary to adjust the position of the limit adjuster 500 on the connecting rod, the handle 540 can be rotated to move it away from the second through-slot structure 525. This causes the first through-slot structure 524 to return to its shape under the action of elasticity, thereby increasing the diameter of the second through hole 521 and making the limit adjuster 500 change from a locked state to a movable state. The limit adjuster 500 provided in this application does not require special adjustment tools, making adjustment convenient and flexible. At the same time, in its locked state, the entire arc surface of the second through hole 521 is fixed to the contacting connecting rod, increasing the friction and enabling the limit adjuster 500 to be in a very stable locked state, maintaining its positional stability.

[0054] In a preferred embodiment provided in this application, a buffer pad 550 is further included. The buffer pad 550 is annular and is fitted inside the through hole formed by the first through hole 511 and the second through hole 521. The buffer pad 550 can also be configured as a split structure, that is, it includes a first buffer pad 551 and a second buffer pad 552, with the first buffer pad 551 disposed in the first through hole 511 and the second buffer pad 552 disposed in the second through hole 521, thereby facilitating assembly.

[0055] The internal combustion engine camshaft transfer device provided in this application mounts the camshaft limiting plate 400 onto a connecting rod via a limit adjuster 500. The position of the camshaft limiting plate 400 on the connecting rod can be adjusted via the limit adjuster 500. This allows the relative distance between the two camshaft limiting plates 400 to be adjusted according to the different camshaft sizes used in different types of internal combustion engines. This enables the internal combustion engine camshaft transfer device provided in this application to handle all camshaft models required in the production workshop, avoiding the need to purchase various camshaft transport vehicles of different sizes and models. On the one hand, this saves on purchase and maintenance costs; on the other hand, it avoids various small vehicles occupying space in the production workshop and causing chaos.

[0056] In one embodiment of this application, handrails 600 are provided on the two first waist bars 211 and / or the two second waist bars 212. Specifically, one handrail 600 can be provided between the two waist bars of the first fixed bracket 210, or between the two waist bars of the second fixed bracket 220. Alternatively, one handrail 600 can be provided on both the first fixed bracket 210 and the second fixed bracket 220, facilitating pushing and pulling of the transfer cart from both directions. Since the handrail is located at one end of the camshaft transfer device during use, it is prone to collision and deformation with other objects. Therefore, in this embodiment, the handrail is designed to be detachable for easy replacement.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. Limit adjuster, including: A first main component, having a first through hole in the center and a plurality of first screw mounting holes around the first through hole; a second main component, having a second through hole corresponding to the first through hole and a second screw mounting hole corresponding to the first screw mounting hole; and a screw, which passes through the first screw mounting hole and the corresponding second screw mounting hole to achieve the connection between the first main component and the second main component. Its features are: The second main body component is also provided with a through groove, which penetrates the upper and lower surfaces of the second main body component and extends from the outer periphery of the second main body component to the second circular through hole; with the through groove as the center, the parts on both sides of the through groove are respectively a first through groove structure component and a second through groove structure component, and a straight through hole is provided from the first through groove structure component to the second through groove structure component; It also includes bolts, which are inserted through the through hole, with the first end of the bolt fixedly connected to the second through groove structure and the second end of the bolt protruding from the surface of the first through groove structure. It also includes a rotating handle, which has an internal thread and is mounted on the bolt and can rotate and move along the external thread of the bolt.

2. The limit adjuster as described in claim 1, characterized in that, It also includes a buffer pad, which is circular in shape and is fitted inside the circular through hole formed by the first circular through hole and the second circular through hole.

3. An internal combustion engine camshaft transfer device, characterized in that, include: Frame: The bottom of the frame is equipped with wheels; The first fixed bracket and the second fixed bracket are fixedly connected to the frame at their bottoms, and the first fixed bracket and the second fixed bracket are arranged in parallel. A first connecting rod and a second connecting rod are arranged in parallel between the first fixed bracket and the second fixed bracket; At least two camshaft limiting plates are provided, each camshaft limiting plate being elongated and having several camshaft placement slots on one side; each camshaft limiting plate has a first limiting block mounting hole and a second limiting block mounting hole at both ends. The limit adjuster as described in claim 1 or 2; The camshaft limiting plate passes through the first limiting block mounting hole and the second limiting block mounting hole respectively on the first connecting rod and the second connecting rod, and is fixed on the first connecting rod and the second connecting rod respectively by the limiting adjuster, so that the camshaft placement slots on the two camshaft limiting plates arranged parallel on the first connecting rod and the second connecting rod face away from the frame, and the corresponding camshaft placement slots are on the same horizontal plane.

4. The internal combustion engine camshaft transfer device as described in claim 3, characterized in that, The camshaft placement groove includes a flat portion, an arc-shaped portion, and a hook portion. The first end of the flat portion is connected to the upper side of the camshaft limiting plate, the second end of the flat portion is connected to the first end of the arc-shaped portion, the second end of the arc-shaped portion is connected to the first end of the hook portion, and the second end of the hook portion is connected to the upper side of the camshaft limiting plate. The hook portion and the upper side of the camshaft limiting plate form a hook facing the flat portion.

5. The internal combustion engine camshaft transfer device as described in claim 4, characterized in that, The camshaft limiting plate is made of nylon.

6. The camshaft transfer device for an internal combustion engine as described in claim 4, characterized in that, The frame includes a first crossbeam and a second crossbeam, which are arranged in parallel. Universal wheels are provided at the bottom of both ends of the first crossbeam and the second crossbeam, and a support plate is provided between the first crossbeam and the second crossbeam.

7. The internal combustion engine camshaft transfer device as described in claim 5 or 6, characterized in that, The first fixed bracket and the second fixed bracket have the same structure, both including a first waist rod, a second waist rod and a top rod. The first ends of the first waist rod and the second waist rod are fixedly connected to the frame, and the second ends of the first waist rod and the second waist rod are fixedly connected to the top rod. The first waist rod, the second waist rod and the top rod form an isosceles trapezoid that is wider at the bottom and narrower at the top. In the first fixed bracket and the second fixed bracket, the two first waist bars are arranged in parallel, the two second waist bars are arranged in parallel, and the first connecting rod and the second connecting rod are parallel and arranged from top to bottom between the two first waist bars. It also includes a third connecting rod and a fourth connecting rod, which are parallel to each other and arranged from top to bottom between the two second waist rods. Two camshaft limiting plates are also arranged parallel to each other on the third connecting rod and the fourth connecting rod.

8. The internal combustion engine camshaft transfer device as described in claim 7, characterized in that, It also includes a fifth connecting rod, a sixth connecting rod, a seventh connecting rod, and an eighth connecting rod. The fifth and sixth connecting rods are parallel and arranged from top to bottom between the two first waist rods, and the fifth and sixth connecting rods are located below the second connecting rod. Two camshaft limiting plates are also arranged parallel to each other on the fifth and sixth connecting rods. The seventh and eighth connecting rods are parallel and arranged from top to bottom between the two second waist rods, and the seventh and eighth connecting rods are located below the fourth connecting rod; two camshaft limiting plates are also arranged parallel to the seventh and eighth connecting rods.

9. The internal combustion engine camshaft transfer device as described in claim 8, characterized in that, Handrails are provided on the two first waist bars and / or the two second waist bars.

10. The camshaft transfer device for an internal combustion engine as described in claim 9, characterized in that, A first reinforcing rod is provided between the two top rods, a second reinforcing rod is provided between the first and second waist rods of the first fixed bracket, a third reinforcing rod is provided between the first and second waist rods of the second fixed bracket, and a fourth reinforcing rod is provided between the second and third reinforcing rods.

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