Valve top cylinder disassembling and assembling tool

Abstract

The utility model discloses a valve top cylinder disassembling and assembling tool which comprises a pushing rod and a sleeve, the upper end of the pushing rod is connected with a pressing assembly, and the lower end of the pushing rod extends into the sleeve. A first meshing part and a second meshing part are symmetrically arranged at the lower end part of the push rod; a first open slot and a second open slot are symmetrically formed in the sleeve, a first tooth claw is further rotationally arranged on the sleeve and located at the first open slot, the first tooth claw comprises a first tooth claw gear part and a first tooth claw supporting part, and the first tooth claw gear part is meshed with the first meshing part; and a second tooth claw is rotationally arranged on the sleeve and located at the second opening groove, the second tooth claw comprises a second tooth claw gear part and a second tooth claw supporting part, and the second tooth claw gear part is meshed with the second meshing part. The disassembly and assembly tool for the valve top cylinder can ensure the use reliability of the tool, reduce the labor intensity of operators, improve the working efficiency of the operators, reduce the production cost and improve the economic benefits of enterprises.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine parts assembly equipment technical field especially relates to a valve top cylinder dismounting frock. BACKGROUND

[0002] In prior art, the quick assembly and taking-out frock of valve top cylinder is mostly the tool composed of the different combinations of ejector rod, spring, steel ball, the mechanical structure of this tool is complicated, the force borne by the steel ball is relatively concentrated, is extremely easy to damage, and the user needs to continuously press, does not let go to realize the assembly and taking-out of engine valve top cylinder.

[0003] In the process of long-term repeated operation in the workshop, the above-mentioned tool is of great working strength to the operator, and is easy to cause the hand fatigue of the operator, the steel ball and the ejector rod are point contact, the frictional resistance is small, the valve top cylinder is easy to fall off from the tool, and the phenomenon of not holding, not holding tightly and not holding firmly occurs, the assembly and taking-out efficiency of the valve top cylinder is low, the long-term repeated assembly and taking-out process is easy to cause the failure problem of spring, causes the use reliability of the tool to reduce or lose its functionality, the maintenance cost is high, can only replace the new tool to ensure production, finally leads to the production cost to rise. SUMMARY

[0004] In order to overcome the above-mentioned defects, the technical problem solved by the utility model is to provide a valve top cylinder dismounting frock, which can ensure the reliability of the frock, reduce the labor intensity of the operator, improve the working efficiency of the operator, reduce the production cost and improve the economic benefit of enterprises.

[0005] The utility model relates to a valve top cylinder dismounting frock, including push rod and sleeve, the upper end of push rod is connected with press assembly, the lower end of push rod extends into sleeve, the lower end of push rod is provided with first engagement and second engagement, the sleeve is provided with first open slot and second open slot, is located at first open slot, the sleeve is also provided with first pawl rotation, first pawl includes first pawl gear part and first pawl support pawl part, first pawl gear part engages with first engagement, is located at second open slot, the sleeve is provided with second pawl rotation, second pawl includes second pawl gear part and second pawl support pawl part, second pawl gear part engages with second engagement.

[0006] Further, the valve top cylinder dismounting frock further includes a housing, the push rod is slidably arranged inside the housing, the upper end of the housing is fixedly connected with the pressing assembly, and the lower end of the housing is fixedly connected with the sleeve.

[0007] Further, the pressing assembly comprises a connecting shell and a handle, the upper end of the push rod is fixedly connected with the handle, and the connecting shell is fixedly connected with the shell; the handle is slidably arranged in the connecting shell; the pressing assembly further comprises a reset spring, the reset spring is sleeved on the push rod, and the upper end of the reset spring abuts against the lower end of the handle, and the lower end of the reset spring abuts against the upper end of the shell.

[0008] Further, the connecting shell is provided with an L-shaped groove, and the handle is provided with a limiting pin which is inserted into the L-shaped groove.

[0009] Further, the inner cavity of the connecting shell comprises a large-diameter section and a small-diameter section which are communicated, the large-diameter section is located above the small-diameter section, and the handle is arranged in the large-diameter section.

[0010] Further, when the reset spring is in a free state, the limiting pin is located at the upper end of the L-shaped groove; when the limiting pin moves downward to the horizontal part of the L-shaped groove, the lower end of the handle abuts against the lower end of the large-diameter section of the connecting shell.

[0011] Further, the first tooth claw is rotatably arranged on the sleeve through a first connecting pin, and the second tooth claw is rotatably arranged on the sleeve through a second connecting pin.

[0012] Further, the upper end of the push rod is threadedly connected with the lower end of the handle.

[0013] Further, the connecting shell is threadedly connected with the shell.

[0014] Further, the lower part of the push rod is further provided with a stop block, the stop block is located inside the sleeve, and the stop block is located above the first meshing part and the second meshing part.

[0015] After the above technical scheme is adopted, the valve top cylinder dismounting tool can guarantee the reliability of the tool, reduce the labor intensity of the operator, improve the work efficiency of the operator, reduce the production cost, and improve the economic benefits of the enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the perspective view of the valve top cylinder dismounting and mounting tool of the utility model;

[0017] Figure 2 is the structure schematic view of the valve top cylinder dismounting and mounting tool of the utility model;

[0018] Figure 3 is Figure 2 the sectional view of A-A surface in it;

[0019] Figure 4 is Figure 3 the local enlarged view of B area in it;

[0020] Figure 5 is Figure 3 the local enlarged view of C area in it;

[0021] Figure 6 is Figure 1 the enlarged perspective view of sleeve in it;

[0022] Figure 7 is Figure 1 the enlarged perspective view of first claw and first connecting pin in it;

[0023] Figure 8 is Figure 3 the enlarged perspective view of push rod in it;

[0024] Figure 9 is Figure 8 the local enlarged view of D area in it;

[0025] Figure 10 is Figure 1 the enlarged perspective view of handle and limit pin in it;

[0026] Figure 11 is Figure 1 the enlarged perspective view of connecting shell in it;

[0027] In the drawing: 1, reset spring;2, sleeve;21, first opening slot;22, second opening slot;3, stop block;4, outer shell;5, connecting shell;51, L-shaped slot;61, first claw;611, first claw gear part;612, first claw claw supporting part;62, second claw;71, first connecting pin;72, second connecting pin;8, handle;9, push rod;91, first meshing part;92, second meshing part;10, limit pin. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and examples.

[0029] In connection with Figure 1 ,Figure 2 , and Figure 3 As shown in the combination of

[0030] As shown in the combination of Figure 3 , Figure 8 , and Figure 9 As shown in the combination of

[0031] As shown in the combination of Figure 2 , Figure 3 , Figure 5 , Figure 6 , and Figure 7 As shown in the combination of

[0032] Preferably, the first pawl 61 is rotatably arranged on the sleeve 2 through a first connecting pin 71, and the second pawl 62 is rotatably arranged on the sleeve 2 through a second connecting pin 72.

[0033] Further preferably, the first pawl gear portion 611 of the first pawl 61 is rotatably installed on the first connecting pin 71, and the second pawl gear portion of the second pawl 62 is rotatably installed on the second connecting pin 72. The first connecting pin 71 and the second connecting pin 72 are fixedly installed on the sleeve 2. The first connecting pin 71 and the second connecting pin 72 are preferably fixedly installed on the sleeve 2 in a threaded connection manner.

[0034] Preferably, the valve top cylinder dismounting tool further comprises a housing 4, and the push rod 9 is slidingly arranged in the interior of the housing 4. The upper end of the housing 4 is fixedly connected with the pressing assembly, and the lower end of the housing 4 is fixedly connected with the sleeve 2.

[0035] Preferably, a stopper 3 is further arranged on the lower part of the push rod 9, the stopper 3 is threadedly connected with the push rod 9, the stopper 3 is located in the interior of the sleeve 2, and the stopper 3 is located above the first engaging portion 91 and the second engaging portion 92 of the push rod 9. The stopper 3 can effectively prevent the first engaging portion 91 and the second engaging portion 92 of the push rod 9 from colliding with the bottom of the housing 4, thereby causing damage to the first engaging portion 91, the second engaging portion 92, and the housing 4.

[0036] As shown in the combination ofFigure 2 , Figure 3 , Figure 4 , Figure 10 ,as well as Figure 11 As shown, the pressing assembly includes a connecting shell 5 and a handle 8. The upper end of the push rod 9 is fixedly connected to the handle 8, and the connecting shell 5 is fixedly connected to the outer shell 4. The handle 8 is slidably disposed inside the connecting shell 5. The pressing assembly also includes a return spring 1, which is sleeved on the push rod 9, with its upper end abutting against the lower end of the handle 8 and its lower end abutting against the upper end of the outer shell 4.

[0037] Preferably, an L-shaped groove 51 is provided on the connecting shell 5, the L-shaped groove 51 includes a vertical part and a horizontal part, the horizontal part being located at the bottom of the vertical part. A limit pin 10 is provided on the handle 8, the limit pin 10 is horizontally positioned, and the limit pin 10 is inserted into the L-shaped groove 51.

[0038] Preferably, the inner cavity of the connecting shell 5 includes a large-diameter section and a small-diameter section that are connected, with the large-diameter section located above the small-diameter section, and the handle 8 disposed on the large-diameter section.

[0039] More preferably, when the return spring 1 is in a free state, the limiting pin 10 is located at the upper end of the vertical part of the L-shaped groove 51; when the limiting pin 10 moves down to the horizontal part of the L-shaped groove 51, the lower end of the handle 8 abuts against the lower end of the large diameter section of the connecting shell 5.

[0040] Preferably, the upper end of the push rod 9 is threadedly connected to the lower end of the handle 8.

[0041] Preferably, the connecting shell 5 is threadedly connected to the outer shell 4.

[0042] The following is a detailed description of the disassembly and assembly process of the valve top cylinder (not shown in the figure) using the valve top cylinder disassembly and assembly tool of this utility model:

[0043] When removing the valve top cylinder from the engine block (not shown in the figure), the operator inserts the sleeve 2 of the valve top cylinder removal and installation tool of this utility model into the inner cavity of the valve top cylinder. Then, the operator presses the handle 8, applying a downward force to the handle 8. The return spring 1 changes from a free state to a compressed state, driving the push rod 9 to move downward. Since the first engagement part 91 at the lower end of the push rod 9 engages with the first toothed gear part 611 of the first toothed pawl 61, and the second engagement part 92 at the lower end of the push rod 9 engages with the second toothed gear part of the second toothed pawl 62, under the force of the push rod 9, the first toothed support part 612 of the first toothed pawl 61 and the second toothed support part of the second toothed pawl 62 gradually open outward until they contact and slowly press against the inner wall of the valve top cylinder. At this time, the limiting pin 10 moves down to the horizontal part of the L-shaped groove 51 and is constrained in the horizontal part of the L-shaped groove 51. The operator can remove the valve top cylinder from the engine block at the same time as removing the valve top cylinder removal and installation tool.

[0044] When the operator presses the handle 8 again, the handle 8 is subjected to the downward force applied by the operator, the limit pin 10 is out of the horizontal part of the L-shaped groove 51 and enters the vertical part of the L-shaped groove 51, the reset spring 1 changes from the compressed state to the free state, and drives the push rod 9 to move upward. Since the first engagement part 91 at the lower end of the push rod 9 is engaged with the first pawl gear part 611 of the first pawl 61, and the second engagement part 92 at the lower end of the push rod 9 is engaged with the second pawl gear part of the second pawl 62, during the upward movement of the push rod 9, the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 gradually retract inward, the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 slowly move away from the inner wall of the valve bridge, until the valve bridge is loosened. At this time, the valve bridge dismounting tool of the utility model and the valve bridge are separated.

[0045] When assembling the valve bridge on the engine body, the operator puts the sleeve 2 of the valve bridge dismounting tool of the utility model into the inner cavity of the valve bridge, then the operator presses the handle 8 and applies a downward force to the handle 8, the reset spring 1 changes from the free state to the compressed state, and drives the push rod 9 to move downward. Since the first engagement part 91 at the lower end of the push rod 9 is engaged with the first pawl gear part 611 of the first pawl 61, and the second engagement part 92 at the lower end of the push rod 9 is engaged with the second pawl gear part of the second pawl 62, under the action of the push rod 9, the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 gradually open outward, until they contact and press the inner wall of the valve bridge. At this time, the limit pin 10 moves down to the horizontal part of the L-shaped groove 51 and is constrained in the horizontal part of the L-shaped groove 51. At this time, the operator does not need to press the handle 8 all the time to keep the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 outwardly supporting and pressing the inner wall of the valve bridge, so that the valve bridge cannot fall off the valve bridge dismounting tool, reducing the labor intensity of the operator, reducing the possibility of the valve bridge falling off the valve bridge dismounting tool, and improving the reliability of the valve bridge dismounting tool. The operator puts the valve bridge into the engine body until the corresponding position (the placement position is a known technology, which will not be described here).

[0046] When the operator presses the handle 8 again, the limit pin 10 is out of the horizontal part of the L-shaped slot 51 and enters the vertical part of the L-shaped slot 51, the reset spring 1 changes from the compressed state to the free state, and drives the push rod 9 to move upward, because the first meshing part 91 at the lower end of the push rod 9 is meshed with the first pawl gear part 611 of the first pawl 61, and the second meshing part 92 at the lower end of the push rod 9 is meshed with the second pawl gear part of the second pawl 62, in the process of the push rod 9 moving upward, the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 gradually retract inward, the first pawl support claw part 612 of the first pawl 61 and the second pawl support claw part of the second pawl 62 slowly move away from the inner wall of the valve top cylinder, until the valve top cylinder is loosened, at this time, the valve top cylinder dismounting tool and the valve top cylinder are separated. The operator takes out the valve top cylinder dismounting tool, and the valve top cylinder remains in the installation position, at this time, the assembly work of the valve top cylinder is completed.

[0047] According to the different degrees of outward opening of the first pawl gear part 611 of the first pawl 61 and the second pawl gear part of the second pawl 62, valve top cylinders with different inner diameters can be taken out and assembled.

[0048] The technical features with serial numbers mentioned in the description (such as the first open slot, the second open slot, the first pawl, the first pawl gear part, the first pawl support claw part, the second pawl, the first connecting pin, the second connecting pin, the first meshing part, the second meshing part, etc.) are only used to distinguish the technical features, and do not represent the positional relationship, installation order and working order between the technical features.

[0049] In the description of the present application, it should be understood that the "upper end", "lower end", "upper", "upward movement", "downward movement", "horizontal part", "vertical part", "interior", "shell", "cavity", "inner wall" and the like are based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as a limitation on the present application.

[0050] The present application is not limited to the above specific embodiments, and various modifications made by those skilled in the art based on the above concept without creative labor are within the scope of the present application.

Claims

1. A valve stem poppet dismounting tool characterized by comprising: The push rod is provided with a press assembly at the upper end and extends into the sleeve at the lower end; the lower end of the push rod is provided with a first engaging part and a second engaging part symmetrically; the sleeve is provided with a first opening slot and a second opening slot symmetrically; the sleeve is further provided with a first pawl rotating at the first opening slot, which comprises a first pawl gear part and a first pawl support part, and the first pawl gear part engages with the first engaging part; the sleeve is further provided with a second pawl rotating at the second opening slot, which comprises a second pawl gear part and a second pawl support part, and the second pawl gear part engages with the second engaging part. The valve top cylinder dismounting tool further comprises a shell, the push rod is slidingly arranged in the shell; the upper end of the shell is fixedly connected with the press assembly, and the lower end of the shell is fixedly connected with the sleeve.

2. The valve top bucket dismounting tool according to claim 1, wherein The press assembly comprises a connecting shell and a handle, the upper end of the push rod is fixedly connected with the handle, and the connecting shell is fixedly connected with the shell; the handle is slidingly arranged in the connecting shell; the press assembly further comprises a return spring, the return spring is sleeved on the push rod, the upper end of the return spring abuts against the lower end of the handle, and the lower end of the return spring abuts against the upper end of the shell.

3. The valve top bucket dismounting tool according to claim 2, wherein The connecting shell is provided with an L-shaped slot, and the handle is provided with a limiting pin which is inserted into the L-shaped slot.

4. The valve top bucket dismounting tool according to claim 3, wherein The inner cavity of the connecting shell comprises a large-diameter section and a small-diameter section which are communicated, the large-diameter section is above the small-diameter section, and the handle is arranged in the large-diameter section.

5. The valve top bucket dismounting tool according to claim 4, wherein When the return spring is in a free state, the limiting pin is located at the upper end of the L-shaped slot; when the limiting pin moves downward to the horizontal part of the L-shaped slot, the lower end of the handle abuts against the lower end of the large-diameter section of the connecting shell.

6. The valve top bucket dismounting tool according to claim 5, wherein The first pawl is rotatingly arranged in the sleeve through a first connecting pin, and the second pawl is rotatingly arranged in the sleeve through a second connecting pin.

7. The valve top bucket tooling of claim 1, wherein, The upper end of the push rod is threadedly connected with the lower end of the handle.

8. The valve top bucket dismounting tool according to claim 3, wherein The connecting shell is threadedly connected with the shell.

9. The valve top bucket dismounting tool according to claim 3, wherein The lower part of the push rod is further provided with a stop block, the stop block is located in the sleeve, and the stop block is above the first engaging part and the second engaging part.

10. The valve top bucket tooling of claim 1, wherein, ​

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