Combined use device of hydraulic stretching tool for diesel engine cylinder cover

Abstract

The utility model discloses a diesel engine cylinder cover hydraulic stretching tool combined using device which comprises a fixing support and a plurality of distance sleeves used for temporarily bearing hydraulic stretching tools, and the distance sleeves are detachably fixed on the fixing support and located on the same horizontal plane. According to the utility model, the fixing bracket is designed, and the four hydraulic stretching tools and the distance block are preassembled on the bracket, so that when the device is used for mounting and dismounting the cylinder bolt of the air cylinder, 1, the completeness and integrity of the tools in the use and storage processes are ensured; 2, the safety when the tool is used is ensured; and 3, the mounting misalignment of the hydraulic stretching tool is avoided, and the phenomenon that a bolt observation hole in the lower part of the distance block is deflected to a position where observation operation is inconvenient due to rotation and sliding of the distance block is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinder head hydraulic stretching tool operation, in particular to a combined use device of a diesel engine cylinder head hydraulic stretching tool. Background Art

[0002] The diesel engine cylinder head is a critical component, housing intake and exhaust passages, exhaust valves, injector channels, and cooling channels. Together with the cylinder liner and piston mounted on its base, the cylinder head forms the combustion chamber structure. During diesel engine assembly and maintenance, the cylinder head needs to be removed to inspect its components, the interior of the cylinder liner, and the combustion chamber. Conventional diesel engine cylinder heads are hydraulically tightened to the engine block using through-bolts, typically secured by hydraulic bolts located at the four corners of the cylinder head. Disassembly typically involves four separate hydraulic tensioning tools. Manual handling of the hydraulic tensioning tools is often required during use, and pre-installation can be challenging due to positioning difficulties and slippage of the distance blocks. Conventionally, the hydraulic tensioning tools and distance blocks are separate components, making them prone to misalignment and slippage during tool installation and removal, posing a safety risk. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a combined use device of a hydraulic stretching tool for a diesel engine cylinder head to solve the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical solutions:

[0005] Provided is a combined use device for a diesel engine cylinder head hydraulic stretching tool, comprising a fixed bracket and a plurality of distance sleeves for temporarily carrying the hydraulic stretching tool, wherein the distance sleeves are detachably fixed to the fixed bracket and are located in the same horizontal plane.

[0006] For example, in the combined use device of the diesel engine cylinder head hydraulic stretching tool, there are four distance sleeves distributed in a matrix at the four corners of the fixing bracket.

[0007] As described in the combined use device of the diesel engine cylinder head hydraulic stretching tool, wherein the fixed bracket includes two longitudinal connecting members and one transverse connecting member, the four distance sleeves are respectively connected in groups of two through the two longitudinal connecting members, and the transverse connecting member is connected transversely between the two longitudinal connecting members.

[0008] For example, the combined use device of the hydraulic stretching tool for the diesel engine cylinder head, wherein the longitudinal connecting member is a first rectangular slat, and the two ends of the first rectangular slat are respectively provided with a clamping position for clamping the distance sleeve, and the transverse connecting member includes a bottom slat, a second rectangular slat, a side ear plate and a hanging ear piece, the bottom slat is fixed to the middle part of the top surface of the first rectangular slat, the side ear plate is vertically fixed to the top surface of the bottom slat, the middle and lower parts of the side ear plate are provided with a clamping groove, the hanging ear piece is fixed to the top surface of the second rectangular slat, and the two ends of the second rectangular slat are respectively passed through the clamping slots of the side ear plates and clamped between the two side ear plates.

[0009] As described in the combined use device of the diesel engine cylinder head hydraulic stretching tool, wherein the distance sleeve has a hollow cavity for accommodating the hydraulic stretching tool, the top of the hollow cavity is provided with a support member for supporting the hydraulic stretching tool, a compression spring and a distance block are provided in the hollow cavity, and the distance block is arranged at the bottom of the hydraulic stretching tool through the compression spring.

[0010] For example, in the combined use device of the diesel engine cylinder head hydraulic stretching tool, the side wall of the distance sleeve is provided with an observation hole, and the horizontal plane where the observation hole is located is located below the distance block.

[0011] The beneficial effects of the technical solution of this utility model are:

[0012] This device is designed by designing a fixed bracket, and pre-installing four hydraulic stretching tools and distance blocks on the bracket. In this way, when using this device to install and remove cylinder bolts:

[0013] 1. Ensure the integrity of the tool. This device integrates the hydraulic stretching tool and the distance block, so that "8" parts are integrated into "1" whole, ensuring the integrity and integrity of the tool during use and storage;

[0014] 2. The device can be hoisted to a suitable location as a whole using the lifting ring on the bracket and external lifting equipment (manual or electric crane), thus avoiding the manual handling of scattered tool parts and ensuring safety when using the tool;

[0015] 3. Since the positions of the four hydraulic tools on this device are determined according to the relative positions of the diesel engine cylinder head bolts, when the device is hoisted onto the cylinder head, the tools at the four corners of the device basically match the bolts at the four corners of the cylinder head, which facilitates the further removal of the hydraulic bolts; avoids the "misalignment" of the hydraulic stretching tool installation, and avoids the rotation and sliding of the distance block, which causes the bolt observation hole at the bottom of the distance block to deflect to a position that is inconvenient for observation and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To further illustrate the above-mentioned purpose, structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the utility model;

[0018] Figure 2 This is a longitudinal structural schematic diagram with a partial cross-section of a preferred embodiment of the utility model;

[0019] In the figure: 1. Hydraulic stretching tool; 2. Distance sleeve; 3. First rectangular slat; 4. Hexagon screw; 5. Guardrail strip; 6. Bottom strip; 7. Second rectangular slat; 8. Side ear plate; 9. Lifting ear piece; 10. Hexagon screw; 11. Self-locking nut; 12. Slot; 13. Support member; 14. Compression spring; 15. Distance block; 16. Observation hole. DETAILED DESCRIPTION

[0020] The terms "utility model" and "the present invention" as used in this specification are intended to refer broadly to all subject matter of this specification and any patent claims below. Statements containing these terms should not be understood to limit the subject matter described herein or to limit the meaning or scope of any patent claim below. In addition, this specification does not attempt to describe or limit the subject matter covered by any claim of any specific component, paragraph, statement or figure of this application. The subject matter should be understood with reference to the entire specification, all drawings and any claims below. The present invention may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered as limiting.

[0021] The details of the present invention will now be discussed with reference to the accompanying drawings which illustrate the present invention by way of example only. In the accompanying drawings, similar features or components may be marked with the same reference numerals.

[0022] The use of "including," "having," and "comprising" and variations thereof herein is intended to encompass the items listed thereafter and equivalents thereof, as well as additional items. Although reference may be made to directions such as above, below, upward, downward, rearward, bottom, top, front, and rear in describing the drawings, for convenience, reference is made relative to the drawings. These directions are not intended to literally define or limit the present invention in any manner. Furthermore, terms such as "first," "second," and "third" are used herein for descriptive purposes and are not intended to indicate or imply importance or significance.

[0023] See Figure 1 、 Figure 2As shown, the combined use device of the hydraulic stretching tool for the diesel engine cylinder head of the utility model includes a fixed bracket and a plurality of distance sleeves 2 for temporarily supporting the hydraulic stretching tool 1. The distance sleeves 2 are detachably fixed to the fixed bracket and are located in the same horizontal plane.

[0024] In a preferred embodiment, there are four distance sleeves 2 distributed in a matrix at the four corners of the fixing bracket.

[0025] Specifically, the fixing bracket includes two longitudinal connectors and one transverse connector. The four distance sleeves 2 are respectively connected in groups of two through the two longitudinal connectors, and the transverse connector spans and connects between the two longitudinal connectors.

[0026] Furthermore, the longitudinal connector is a first rectangular slat 3, each end of which is provided with a latch for latching the spacing sleeve 2. It is easy to understand that, in a preferred embodiment, an opening can be provided at the end of the first rectangular slat 3, and a guardrail strip 5 can be installed on the outside of the opening via a hexagonal screw 4. The inner diameter of the opening is slightly smaller than the outer diameter of the hydraulic stretching tool 1. In other embodiments, a hole can also be directly opened at the end of the first rectangular slat 3.

[0027] Continuing to refer to the figure, the transverse connecting parts include a bottom plate 6, a second rectangular plate 7, a side ear plate 8 and a lifting ear piece 9. The bottom plate 6 is fixed to the middle part of the top surface of the first rectangular plate 3 by means of a hexagonal screw 10 and a self-locking nut 11. The side ear plate 8 is vertically fixed to the top surface of the bottom plate 6. A slot 12 is provided in the middle and lower part of the side ear plate 8. The lifting ear piece 9 is fixed to the top surface of the second rectangular plate 7. The two ends of the second rectangular plate 7 pass through the slots 12 of the side ear plate 8 and are then clamped between the two side ear plates 8. By using the lifting ear piece 9 on the bracket, the device can be hoisted as a whole to the appropriate position using external hoisting equipment (manual or electric crane), avoiding the manual handling of scattered tool parts and ensuring safety when using the tool.

[0028] See Figure 2 As shown, the distance sleeve 2 has a hollow cavity for accommodating the hydraulic stretching tool 1, and a support member 13 for supporting the hydraulic stretching tool 1 is provided on the top of the hollow cavity. A compression spring 14 and a distance block 15 are provided in the hollow cavity, and the distance block 15 is arranged at the bottom of the hydraulic stretching tool 1 through the compression spring 14.

[0029] The side wall of the distance sleeve 2 is provided with an observation hole 16 , and the horizontal plane where the observation hole 16 is located is located below the distance block 15 .

[0030] In general, this device pre-installs four hydraulic tensioning tools 1 and spacers 15 on a fixed bracket. The relative positions of the hydraulic tools and spacers 15 on the bracket can be preset based on the relative spacing of the hydraulic bolts at the four corners of the diesel engine cylinder head. Furthermore, by improving the structural positioning of the hydraulic tensioning tools 1 and spacers 15, a preloaded spring is installed between the hydraulic tensioner and the spacers 15. The spring's force maintains close vertical contact between the hydraulic tensioner 1 and the spacers 15. The spring's purpose is twofold: first, to maintain close contact between the spacers 15 and the hydraulic tensioning tool 1, preventing them from falling off. The spacers 15 are essentially a vertical extension of the hydraulic tensioning tool 1. They are connected to the existing threaded holes at the bottom of the hydraulic tensioning tool 1 via studs to facilitate the length of the spacer sleeve 2, making it easier to remove the hydraulic bolts. Second, the spring's purpose is to facilitate the resetting of the hydraulic tensioner (hydraulic cylinder). It should be noted that after each use (stretching) of the hydraulic tensioner, its hydraulic cylinder is in a "saturated" state, that is, the hydraulic tensioner is in a "stretched" state. Before the next use, it is necessary to reset the hydraulic cylinder because the vertical stroke of the hydraulic cylinder is limited. Resetting means manually pressing down the upper part of the hydraulic cylinder after connecting the hydraulic oil pipe, so that the oil inside the cylinder is discharged through the oil pipe, thereby completing the reset of the hydraulic cylinder. The spring is in a pre-stressed state, so when it needs to be reset, after connecting the hydraulic oil pipe, the spring force will cause the hydraulic cylinder to move in the "reset" direction, discharge the hydraulic oil inside the hydraulic cylinder, complete the reset, and facilitate the next use.

[0031] The distance block 15 and the hydraulic stretching tool 1 are fixed relatively to the bracket together, the position of the distance block 15 relative to the bracket is kept unchanged, and the observation hole 16 below the distance block 15 is located in a position convenient for observation and operation, while the hydraulic stretching tool 1 can maintain free rotation in the horizontal direction above the distance block 15.

[0032] When using:

[0033] a. Clean the cylinder head area, use a crane to hook the lifting ring on the device to lift it and adjust the position of the device to the area above the cylinder head, and gently lower the device onto the cylinder head;

[0034] b. Rotate the pre-tightening hydraulic stretching tool to the appropriate position;

[0035] c. Use hydraulic stretching tools to remove or install cylinder head hydraulic bolts;

[0036] d. Unscrew the hydraulic tensioner counterclockwise and use a crane to lift the device out of the work area.

[0037] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined use device of hydraulic stretching tools for diesel engine cylinder heads, characterized in that: It comprises a fixed bracket and a plurality of distance sleeves for temporarily carrying hydraulic stretching tools. The distance sleeves are detachably fixed on the fixed bracket and are located in the same horizontal plane.

2. The diesel engine cylinder head hydraulic stretching tool assembly device as claimed in claim 1, characterized in that: There are four distance sleeves distributed in a matrix at the four corners of the fixing bracket.

3. The diesel engine cylinder head hydraulic stretching tool assembly device as claimed in claim 2, characterized in that: The fixing bracket includes two longitudinal connecting pieces and one transverse connecting piece. The four distance sleeves are respectively connected in groups of two through the two longitudinal connecting pieces. The transverse connecting piece spans and connects between the two longitudinal connecting pieces.

4. The diesel engine cylinder head hydraulic stretching tool assembly device as claimed in claim 3, characterized in that: The longitudinal connecting member is a first rectangular slat, and the two ends of the first rectangular slat are respectively provided with a clamping position for clamping the distance sleeve. The transverse connecting member includes a bottom slat, a second rectangular slat, a side ear plate and a hanging ear piece. The bottom slat is fixed to the middle part of the top surface of the first rectangular slat, and the side ear plate is vertically fixed to the top surface of the bottom slat. The middle and lower parts of the side ear plate are provided with a clamping groove, and the hanging ear piece is fixed to the top surface of the second rectangular slat, and the two ends of the second rectangular slat are respectively passed through the clamping slots of the side ear plates and clamped between the two side ear plates.

5. The combined use device of hydraulic stretching tools for diesel engine cylinder heads according to any one of claims 1 to 4, characterized in that: The distance sleeve has a hollow cavity for accommodating the hydraulic stretching tool. The top of the hollow cavity is provided with a support member for supporting the hydraulic stretching tool. A compression spring and a distance block are provided in the hollow cavity. The distance block is arranged at the bottom of the hydraulic stretching tool through the compression spring.

6. The diesel engine cylinder head hydraulic stretching tool assembly device as claimed in claim 5, characterized in that: The side wall of the distance sleeve is provided with an observation hole, and the horizontal plane where the observation hole is located is located below the distance block.

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