Clamp structure for diesel engine cylinder cover

Abstract

The utility model relates to the technical field of diesel engines, in particular to a clamp structure for a diesel engine cylinder cover, which comprises a bottom plate (1). A bracket (2) and an adjusting structure are respectively arranged on the bottom plate (1); a positioning pin (3) is arranged on the adjusting structure; a pressing plate (4) is arranged on the bracket (2); a cylinder cover (5) is arranged between the pressing plate (4) and the positioning pin (3); the adjusting structure can adjust the mounting position of the positioning pin and can adapt to hole positions of positioning holes in the bottoms of cylinder covers of different specifications; when the device is used for clamping cylinder covers with different specifications, only the mounting positions of the positioning pins need to be adjusted; the clamp does not need to be replaced frequently and the tool does not need to be disassembled and assembled repeatedly, operation time is shortened, production efficiency is effectively improved, and labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, and in particular to a clamp structure for a diesel engine cylinder cover. Background Art

[0002] In current diesel engine production, the cylinder head of the diesel engine is clamped on the fixture and then cut with a tool. The diesel engine cylinder heads have different specifications and different positioning hole positions. The cylinder head fixture currently used in production cannot be suitable for diesel engine cylinder heads of different specifications at the same time, and a new fixture needs to be manufactured. Moreover, when switching models, the fixture needs to be frequently replaced, and the tooling needs to be lifted up and down and pulled to confirm the tooling origin position. The entire process requires repeated disassembly and assembly of the tooling, which is time-consuming, labor-intensive, and poses safety hazards, greatly affecting production efficiency and wasting labor costs.

[0003] After searching, the applicant found that the Chinese patent document with publication number 202053084U disclosed on November 30, 2011 a hydraulic clamp for finishing the upper support type sealing belt of a diesel engine cylinder head, which is composed of a hydraulic cylinder assembly, a base, a clamping disc and a clamping rod, etc. The base of the clamp is positioned and installed on the machine tool by a positioning key, and the hydraulic cylinder assembly is in the base of the clamp. The clamping disc is installed on the top of the cylinder push rod, and the lower end of the clamping rod is installed with a retreat iron. When the diesel engine cylinder head is placed in the clamp, the hydraulic cylinder pushes the clamping disc to tighten it, and then the locking bevel iron pushes the clamping rod to tighten the diesel engine cylinder head and automatically lock it; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing fixture structure for the diesel engine cylinder head. Utility Model Content

[0005] The purpose of the utility model is to provide a clamp structure for a diesel engine cylinder head which can realize clamping of cylinder heads of different specifications.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a clamp structure for a diesel engine cylinder head, including a base plate; a bracket and an adjustment structure are respectively provided on the base plate; a positioning pin is provided on the adjustment structure; a pressure plate is provided on the bracket; and a cylinder head is provided between the pressure plate and the positioning pin.

[0007] The adjustment structure includes a first mounting plate; the positioning pin includes a first positioning pin; the first mounting plate is respectively provided with a first screw hole and a second screw hole; the first positioning pin is respectively connected to the first screw hole and the second screw hole.

[0008] The first positioning pin includes a first pin head; the first pin head is connected to a first pin seat; the first pin seat is provided with a first screw; the first screw is connected to the first screw hole and the second screw hole respectively.

[0009] A second mounting plate and a third mounting plate are respectively provided on one side of the first mounting plate; the positioning pin includes a second positioning pin; and the second positioning pin is respectively connected to the second mounting plate and the third mounting plate.

[0010] The second positioning pin includes a second pin head; the second pin head is connected to a second pin seat; a second screw is provided on the second pin seat; a third screw hole is provided on both the second mounting plate and the third mounting plate; the second screw is connected to the third screw hole.

[0011] A first cylinder is provided on the base plate; a lifting plate is connected to the top of the first cylinder; a clearance hole is provided on the lifting plate; the first mounting plate, the second mounting plate and the third mounting plate are all provided on the bottom of the lifting plate; the first positioning pin and the second positioning pin both extend from the clearance hole.

[0012] Positioning blocks are provided on the bottom plate; the positioning blocks are respectively arranged on both sides of the lifting plate.

[0013] The bracket includes a crossbeam and a support column; a mounting groove is provided on the top of the crossbeam; a second cylinder is provided in the mounting groove; a third cylinder is provided on both sides of the second cylinder; the pressure plate is provided at the bottom of the crossbeam and is connected to the second cylinder and the third cylinder respectively.

[0014] A fourth cylinder is provided on a side of the support column close to the cylinder cover; a piston rod of the fourth cylinder is pressed tightly against the cylinder cover.

[0015] The cylinder cover is arranged on the top of the lifting plate; a positioning hole is provided at the bottom of the cylinder cover; and the positioning pin is connected in the positioning hole.

[0016] The beneficial effects of this application are:

[0017] 1. A first mounting plate is provided on the base plate of the present application; a first screw hole and a second screw hole are respectively provided on the first mounting plate; the first locating pin is selectively connected to the first screw hole or the second screw hole according to the different specifications of the cylinder head; thereby, the installation position of the first locating pin on the first mounting plate can be adjusted to adapt to the hole position of the locating holes at the bottom of the cylinder head of different specifications; a second mounting plate and a third mounting plate are respectively provided on one side of the first mounting plate; the second locating pin is selectively installed on the second mounting plate or the third mounting plate according to the different specifications of the cylinder head; thereby, the installation position of the second locating pin can be adjusted to adapt to the hole position of the locating holes at the bottom of the cylinder head of different specifications.

[0018] When performing clamping operations on cylinder heads of different specifications, this device only needs to adjust the installation positions of the first locating pin and the second locating pin; there is no need to frequently replace the fixture and repeatedly disassemble and assemble the tooling, which reduces the operation time, effectively improves production efficiency, and saves labor costs.

[0019] 2. This application is provided with a lifting plate; before the cylinder head falls on the limit pin, it is first installed on the lifting plate, and the lifting plate is driven to fall by the cylinder, so that the limit pin is slowly inserted into the positioning hole; it effectively prevents the cylinder head from falling too fast, causing the positioning hole to deviate.

[0020] 3. The present application is provided with a fourth cylinder, the piston rod of the fourth cylinder extends out and presses against one side of the cylinder cover, pressing the cylinder cover against the side of the support column, thereby realizing horizontal positioning of the cylinder cover; the pressure plate and the limiting columns provided on both sides of the bottom plate can realize vertical positioning of the cylinder cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the working status of the fixture structure for the diesel engine cylinder head.

[0023] Figure 2 This is a schematic diagram of the structure of the fixture for the diesel engine cylinder head.

[0024] Figure 3 This is a partial enlarged view of the fixture structure for the diesel engine cylinder head.

[0025] Figure 4 This is a schematic diagram of the structure of the adjustment structure of the clamp structure for the diesel engine cylinder head.

[0026] Figure 5 This is a schematic structural diagram of the locating pin of the fixture structure for the diesel engine cylinder head.

[0027] Figure 6 This is a schematic structural diagram of the cylinder head of the diesel engine cylinder head with a clamp structure.

[0028] The marks in the above figure are:

[0029] The following are marked in the figure:

[0030] 1. Bottom plate,

[0031] 2. Bracket, 201. Beam, 202. Support column,

[0032] 3. Positioning pin,

[0033] 4. Press plate,

[0034] 5. Cylinder head, 501, positioning hole,

[0035] 6. First mounting plate, 601. First screw hole, 602. Second screw hole,

[0036] 7. First positioning pin, 701. First pin head, 702. First pin seat, 703. First screw,

[0037] 8. Second positioning pin, 801. Second pin head, 802. Second pin seat, 803. Second screw, 804. Third screw hole,

[0038] 9. Second mounting plate, 901. Third mounting plate,

[0039] 10. First cylinder,

[0040] 11. Lift the board, 111. Make way for the hole,

[0041] 12. Positioning block,

[0042] 13. Mounting slot, 131. Second cylinder, 132. Third cylinder, 133. Fourth cylinder,

[0043] 14. Knives. DETAILED DESCRIPTION

[0044] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0045] Figure 1 The fixture structure for the diesel engine cylinder head shown includes a base plate 1; a bracket 2 and an adjustment structure are respectively provided on the base plate 1; a positioning pin 3 is provided on the adjustment structure; a pressure plate 4 is provided on the bracket 2; and a cylinder head 5 is provided between the pressure plate 4 and the positioning pin 3.

[0046] The adjustment structure can adjust the installation position of the locating pin 3, and can adapt to the hole position of the locating hole 501 at the bottom of the cylinder head 5 of different specifications; when the device performs the clamping operation of the cylinder head 5 of different specifications, it is only necessary to adjust the installation position of the locating pin 3; there is no need to frequently replace the clamp and repeatedly disassemble and assemble the tooling, which reduces the operation time, effectively improves the production efficiency, and saves labor costs.

[0047] The adjustment structure includes a first mounting plate 6; the positioning pin 3 includes a first positioning pin 7; the first mounting plate 6 is provided with a first screw hole 601 and a second screw hole 602; the first positioning pin 7 is connected to the first screw hole 601 and the second screw hole 602 respectively.

[0048] The top of the base plate 1 is a V-shaped structure; a mounting block is provided on the base plate 1; the first mounting plate 6 is installed on the mounting block; two first mounting plates 6 are provided on the base plate 1; the first mounting plates 6 are respectively arranged on both sides of the base plate 1; the first mounting plate 6 is a square plate; the first locating pin 7 is fixedly connected to the top surface of the first mounting plate 6; 4 first screw holes 601 and 4 second screw holes 602 are provided on the first mounting plate 6; the first locating pin 7 installed on the second screw hole 602 is twisted 20° compared to the positioning point of the first locating pin 7 installed on the first screw hole 601; the first locating pin 7 is connected to the first screw hole 601 or the second screw hole 602 according to the different specifications of the cylinder head 5; thereby, the installation position of the first locating pin 7 on the first mounting plate 6 can be adjusted, and the hole position of the bottom locating hole 501 of the cylinder head 5 with different specifications can be adapted.

[0049] The first positioning pin 7 includes a first pin head 701 ; the first pin head 701 is connected to a first pin seat 702 ; a first screw 703 is provided on the first pin seat 702 ; the first screw 703 is connected to the first screw hole 601 and the second screw hole 602 , respectively.

[0050] The first pin head 701 and the first pin seat 702 are an integral structure; the first pin seat 702 is a square block; the four corners of the first pin seat 702 are respectively installed with first screws 703; the first screw 703 is installed in the first screw hole 601 or the second screw hole 602, so that the installation position of the first positioning pin 7 can be changed.

[0051] A second mounting plate 9 and a third mounting plate 901 are respectively provided on one side of the first mounting plate 6 ; the positioning pin 3 includes a second positioning pin 8 ; the second positioning pin 8 is respectively connected to the second mounting plate 9 and the third mounting plate 901 .

[0052] The second mounting plate 9 and the third mounting plate 901 are both L-shaped structures; the second mounting plate 9 and the third mounting plate 901 are both arranged on one side of the first mounting plate 6; the second locating pin 8 is installed on the second mounting plate 9 or the third mounting plate 901 according to the specifications of the cylinder head 5; thereby, the installation position of the second locating pin 8 can be adjusted to adapt to the hole position of the locating hole 501 at the bottom of the cylinder head 5 of different specifications.

[0053] The second positioning pin 8 includes a second pin head 801; the second pin head 801 is connected to a second pin seat 802; a second screw 803 is provided on the second pin seat 802; a third screw hole 804 is provided on both the second mounting plate 9 and the third mounting plate 901; the second screw 803 is connected in the third screw hole 804.

[0054] The second pin head 801 and the second pin seat 802 are an integral structure; the second pin seat 802 is a square block; the four corners of the second pin seat 802 are installed with second screws 803; the second screw 803 is installed in the third screw hole 804 of the second mounting plate 9 or the third mounting plate 901, so as to realize the change of the installation position of the second positioning pin 8.

[0055] A first cylinder 10 is provided on the base plate 1; a lifting plate 11 is connected to the top of the first cylinder 10; a clearance hole 111 is provided on the lifting plate 11; the first mounting plate 6, the second mounting plate 9 and the third mounting plate 901 are all provided at the bottom of the lifting plate 11; the first positioning pin 7 and the second positioning pin 8 both extend from the clearance hole 111.

[0056] The lifting plate 11 is a rectangular plate; both ends of the lifting plate 11 are provided with a clearance hole 111; the clearance hole 111 is a square through hole; the bottom of both ends of the lifting plate 11 is provided with a first cylinder 10; the first cylinder 10 can drive the lifting plate 11 to perform rising and falling operations; first install the cylinder cover 5 on the lifting plate 11, and the lifting plate 11 is driven to fall by the first cylinder 10, so that the limit pin 3 is slowly inserted into the positioning hole 501; effectively prevent the cylinder cover 5 from falling too fast, causing the positioning hole 501 to deviate.

[0057] Positioning blocks 12 are provided on the bottom plate 1 ; the positioning blocks 12 are respectively provided on both sides of the lifting plate 11 .

[0058] A plurality of positioning blocks 12 are provided on the base plate 1 ; the positioning blocks 12 are supported on the bottom of both sides of the cylinder head 5 , and can provide stable support for the cylinder head 5 ; the positioning blocks 12 cooperate with the pressure plate 4 to achieve vertical positioning of the cylinder head 5 .

[0059] The bracket 2 includes a crossbeam 201 and a support column 202; a mounting groove 13 is provided at the top of the crossbeam 201; a second cylinder 131 is provided in the mounting groove 13; a third cylinder 132 is provided on both sides of the second cylinder 131; a pressure plate 4 is provided at the bottom of the crossbeam 201 and is connected to the second cylinder 131 and the third cylinder 132 respectively.

[0060] The bracket 2 is a U-shaped structure; support columns 202 are provided at both ends of the beam 201; the beam 201 is a hollow beam with an open top; a through hole is provided at the bottom of the beam 201; the piston rods of the second cylinder 131 and the third cylinder 132 are extended to the bottom of the beam 201 through the through hole and connected to the pressure plate 4, thereby being able to drive the pressure plate 4 to perform rising and falling operations; protrusions are provided at both ends of the pressure plate 4, which can press the top surface of the cylinder cover 5.

[0061] A fourth cylinder 133 is provided on one side of the support column 202 close to the cylinder cover 5 ; the piston rod of the fourth cylinder 133 is tightly pressed against the cylinder cover 5 .

[0062] The piston rod of the fourth cylinder 133 extends out and presses against one side of the cylinder cover 5 , pressing the cylinder cover 5 against the side of the support column 202 , thereby limiting the horizontal position of the cylinder cover 5 .

[0063] The cylinder cover 5 is arranged on the top of the lifting plate 11 ; a positioning hole 501 is provided at the bottom of the cylinder cover 5 ; and the positioning pin 3 is connected to the positioning hole 501 .

[0064] The bottom of the cylinder cover 5 is provided with a plurality of positioning holes 501 ; the positioning holes 501 are plugged and matched with the positioning pins 3 to realize the positioning operation of the cylinder cover 5 on the device.

[0065] The specific workflow of this utility model is as follows:

[0066] The first positioning pin 7 is screwed to the first screw hole 601 or the second screw hole 602 according to the different specifications of the cylinder head 5; the first positioning pin 7 is screwed to the first screw hole 601 or the second screw hole 602 according to the different specifications of the cylinder head 5.

[0067] Install the cylinder head 5 on the lifting plate 11; slowly lower the lifting plate 11 so that the positioning pin 3 is inserted into the positioning hole 501 at the bottom of the cylinder head 5; the piston rod of the fourth cylinder 133 extends out and presses against one side of the cylinder head 5, pressing the cylinder head 5 against the side of the support column 202; the second cylinder 131 and the third cylinder 132 push the pressure plate 4 to press against the top surface of the cylinder head 5; at this time, start the tool 14 to process the cylinder head 5.

[0068] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A clamp structure for a diesel engine cylinder head, characterized in that: The invention comprises a base plate (1); a bracket (2) and an adjustment structure are respectively provided on the base plate (1); a positioning pin (3) is provided on the adjustment structure; a pressing plate (4) is provided on the bracket (2); and a cylinder cover (5) is provided between the pressing plate (4) and the positioning pin (3).

2. A clamp structure for a diesel engine cylinder head according to claim 1, characterized in that: The adjustment structure comprises a first mounting plate (6); the positioning pin (3) comprises a first positioning pin (7); a first screw hole (601) and a second screw hole (602) are respectively provided on the first mounting plate (6); and the first positioning pin (7) is respectively connected to the first screw hole (601) and the second screw hole (602).

3. A clamp structure for a diesel engine cylinder head according to claim 2, characterized in that: The first positioning pin (7) comprises a first pin head (701); the first pin head (701) is connected to a first pin seat (702); a first screw (703) is provided on the first pin seat (702); the first screw (703) is respectively connected to the first screw hole (601) and the second screw hole (602).

4. A clamp structure for a diesel engine cylinder head according to any one of claims 2 to 3, characterized in that: A second mounting plate (9) and a third mounting plate (901) are respectively provided on one side of the first mounting plate (6); the positioning pin (3) includes a second positioning pin (8); and the second positioning pin (8) is respectively connected to the second mounting plate (9) and the third mounting plate (901).

5. A clamp structure for a diesel engine cylinder head according to claim 4, characterized in that: The second positioning pin (8) includes a second pin head (801); the second pin head (801) is connected to a second pin seat (802); a second screw (803) is provided on the second pin seat (802); a third screw hole (804) is provided on both the second mounting plate (9) and the third mounting plate (901); and the second screw (803) is connected to the third screw hole (804).

6. A clamp structure for a diesel engine cylinder head according to claim 4, characterized in that: A first cylinder (10) is provided on the bottom plate (1); a lifting plate (11) is connected to the top of the first cylinder (10); a clearance hole (111) is provided on the lifting plate (11); the first mounting plate (6), the second mounting plate (9) and the third mounting plate (901) are all provided at the bottom of the lifting plate (11); the first positioning pin (7) and the second positioning pin (8) both extend from the clearance hole (111).

7. A clamp structure for a diesel engine cylinder head according to claim 6, characterized in that: Positioning blocks (12) are provided on the bottom plate (1); the positioning blocks (12) are respectively provided on both sides of the lifting plate (11).

8. A clamp structure for a diesel engine cylinder head according to any one of claims 6 to 7, characterized in that: The bracket (2) comprises a crossbeam (201) and a support column (202); a mounting groove (13) is provided at the top of the crossbeam (201); a second cylinder (131) is provided in the mounting groove (13); third cylinders (132) are provided on both sides of the second cylinder (131); the pressing plate (4) is provided at the bottom of the crossbeam (201) and is connected to the second cylinder (131) and the third cylinder (132) respectively.

9. A clamp structure for a diesel engine cylinder head according to claim 8, characterized in that: A fourth cylinder (133) is provided on one side of the support column (202) close to the cylinder cover (5); the piston rod of the fourth cylinder (133) is tightly pressed against the cylinder cover (5).

10. A clamp structure for a diesel engine cylinder head according to claim 9, characterized in that: The cylinder cover (5) is arranged on the top of the lifting plate (11); a positioning hole (501) is provided at the bottom of the cylinder cover (5); and the positioning pin (3) is connected to the positioning hole (501).

Images