Air-cooled diesel engine cylinder cover mounting and aligning device

Abstract

The invention discloses a mounting and aligning device for a cylinder cover of an air-cooled diesel engine, and belongs to tools for assembling air-cooled diesel engines. The device comprises a main beam, a plurality of base plates which are obliquely arranged are evenly distributed and fixed to one side of the main beam, mounting holes are formed in the two ends of each base plate respectively, threaded sleeves are inserted in the mounting holes in a clearance fit mode, and threaded holes are formed in the threaded sleeves and used for being connected with studs on the periphery of an exhaust port of the cylinder cover. Through holes are formed in the positions, corresponding to the mounting holes, of the main beam, and the through holes and the corresponding mounting holes are concentrically arranged and used for being arranged on planting wires on the periphery of an exhaust port of a cylinder cover in a sleeving mode. According to the device, the screw holes in the screw sleeves on each base plate are connected with the two studs on the periphery of each cylinder cover exhaust port, so that the exhaust pipe mounting surfaces on the cylinder covers on the same side of the air-cooled diesel engine can be aligned, the installation quality can be ensured, and the whole machine assembly efficiency is improved. The whole structure is simple, wearing parts are convenient to disassemble, assemble and replace, operation is convenient, labor intensity can be relieved, and it is guaranteed that the cylinder cover is flush with the exhaust pipe mounting face.

Description

Technical Field

[0001] The invention belongs to a tool for assembling an air-cooled diesel engine, and in particular relates to a cylinder head mounting and aligning device for an air-cooled diesel engine. Background Art

[0002] As we all know, the housing of most air-cooled diesel engines is in a "V" shape, and the cylinder heads are installed on the left and right sides of the upper end of the housing, and the cylinder heads on the same side are arranged in a straight line. When assembling the whole machine, the cylinder head is first installed at the fifth station, and then the exhaust pipes on the left and right sides are installed at the sixth station. When installing the exhaust pipe, it must be installed in conjunction with the exhaust port and the thread of the cylinder head. Taking the 8-cylinder air-cooled diesel engine as an example, each cylinder head is fixed by 3 bolts and tightened by a special tightening machine. During the installation of the 4 cylinder heads on the same side, due to the tightening force of the bolts, there are slight differences in the fixing position of each cylinder head. After the installation of the 4 cylinder heads is completed, the assembler borrows the exhaust pipe of the sixth station to roughly compare them. It is difficult for the assembler to judge whether the exhaust pipe installation surfaces of the 4 cylinder heads are aligned with the naked eye. When installing the exhaust pipe at the subsequent six stations, it is sometimes found that the gap between the exhaust pipe and the cylinder head mounting surface is inconsistent, making it difficult to ensure the assembly quality. There are even air and smoke leaks during the subsequent water channel air tightness test and bench test. Once troubleshooting is required, the exhaust pipe must be removed first, and then the cylinder head bolts must be loosened and the cylinder head must be fine-tuned. The troubleshooting process is time-consuming and labor-intensive, which not only affects the installation progress, but also makes it difficult to ensure the installation quality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an air-cooled diesel engine cylinder head installation and alignment device which can ensure the installation quality and improve the assembly efficiency of the whole machine.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A cylinder head installation and alignment device for an air-cooled diesel engine comprises a main beam, a plurality of obliquely arranged pads are evenly distributed and fixed on one side of the main beam, mounting holes are respectively provided at both ends of the pads and screw sleeves are inserted through clearance fit, screw holes are provided in the screw sleeves for connecting to the planting wires on the periphery of the cylinder head exhaust port; through holes are respectively provided on the main beam corresponding to each mounting hole, the through holes are concentrically arranged with the corresponding mounting holes, and are used to be sleeved on the planting wires on the periphery of the cylinder head exhaust port.

[0005] A further improvement of the technical solution of the present invention is that the mounting hole is stepped and the inner end aperture corresponding to the main beam side is larger than the outer end aperture, an annular boss is provided on the outer edge of the inner end of the screw sleeve, and the screw sleeve is clamped in the mounting hole through the annular boss to prevent the screw sleeve from slipping out.

[0006] A further improvement of the technical solution of the present invention is that the inner diameter of the through hole is equal to the inner end diameter of the corresponding mounting hole, so that the screw sleeve can be inserted into the corresponding through hole.

[0007] A further improvement of the technical solution of the present invention is that a conical chamfer is provided at the inner end of the screw hole of the screw sleeve so as to quickly connect with the planting wire.

[0008] A further improvement of the technical solution of the present invention is that a gasket is provided at each through hole on the other side of the main beam, and the inner hole of the gasket matches the planting wire gap to lean against the exhaust pipe installation surface of the cylinder head.

[0009] The further improvement of the technical solution of the present invention is that the outer end of the screw sleeve is a regular hexagonal column, so that it can be tightened with an air gun; an outer sleeve is provided on the screw sleeve near the outer end fixing sleeve, so that the screw sleeve can be manually connected to the planting wire.

[0010] The technical advancements achieved by the present invention are: 1. Through multiple inclined pads evenly distributed and fixed on one side of the main beam, mounting holes are respectively provided at both ends of the pads and screw sleeves are inserted through clearance fit. The two planting wires on the periphery of each cylinder head exhaust port are respectively connected through the screw holes in the screw sleeves on each pad, so that the exhaust pipe installation surfaces on the cylinder head on the same side of the air-cooled diesel engine can be aligned, thereby ensuring the installation quality and improving the assembly efficiency of the whole machine.

[0011] 2. The overall structure is simple, which is convenient for disassembly and replacement of wearing parts. It is easy to operate, can reduce labor intensity, and ensure that the cylinder head and exhaust pipe installation surface are aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 yes Figure 1 Rear view of.

[0014] Figure 3 It is a three-dimensional structural diagram of the present invention.

[0015] Figure 4 yes Figure 1 AA section view.

[0016] Figure 5 It is an installation schematic diagram of the present invention.

[0017] In the figure: main beam 1, protrusion 101, strip hole groove 102, through hole 103, pad 2, mounting hole 201, bolt 3, positioning pin 4, outer sleeve 5, screw sleeve 6, screw hole 601, washer sleeve 7, planting wire 8, cylinder head 9. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 5As shown, the present invention relates to an air-cooled diesel engine cylinder head installation and alignment device, including a main beam 1, the main beam 1 is made of 45# steel, and a plurality of protrusions 101 are evenly distributed on the upper end surface of the main beam 1. The protrusions 101 and the main beam 1 are an integral structure. This embodiment takes four protrusions as an example to install the cylinder head of an 8-cylinder air-cooled diesel engine.

[0019] A plurality of inclined pads 2 are evenly fixed on one side of the main beam 1. Each pad 2 is fixed on the main beam 1 by a bolt 3 and two positioning pins 4 arranged on both sides of the bolt 3. The upper part of each pad 2 corresponds to the protrusion 101 one by one. Mounting holes 201 are respectively provided at both ends of each pad 2, and screw sleeves 6 are respectively inserted into the mounting holes through clearance fit. Screw holes 601 are provided in the screw sleeves 6 for connecting the planting wires on the periphery of the cylinder head exhaust port; a through hole 103 is respectively provided on the main beam 1 corresponding to each mounting hole 201, one of the through holes 103 is located on the protrusion, and each through hole 103 is arranged concentrically with the corresponding mounting hole 201, and is used to be sleeved on the planting wire 8 on the periphery of each cylinder head exhaust port.

[0020] The mounting hole 201 is stepped and the inner end aperture of the corresponding main beam 1 side is larger than the outer end aperture. An annular boss is provided at the inner end outer edge of the screw sleeve 6, and the screw sleeve 6 is clamped in the mounting hole 201 through the annular boss to prevent the screw sleeve 6 from slipping out. The inner diameter of the through hole 103 is equal to the inner end aperture of the corresponding mounting hole 201, so that the screw sleeve 6 can be inserted into the corresponding through hole 103. A conical chamfer is provided at the inner end of the screw hole of the screw sleeve 6 so that the screw sleeve 6 can be quickly connected to the planting wire.

[0021] The outer end of the screw sleeve 6 is a regular hexagonal column, so that it can be tightened with an air gun; a sleeve 5 is sleeved on the screw sleeve 6 near the outer end and fixed by a pin, so that the screw sleeve 6 can be manually connected to the planting wire. Strip-shaped holes 102 are respectively provided between two adjacent pads 2 on one side of the main beam 1 to reduce the deadweight of the device.

[0022] On the other side of the main beam 1, a bushing 7 is fixed at each through hole 103. The inner hole of the bushing 7 is clearance-matched with the thread 8, and is used to lean against the exhaust pipe mounting surface of the cylinder head. The outer edge of the bushing 7 is stepped, and one end of the bushing with a small diameter is inserted into the corresponding through hole 103 through clearance fit and welded to the main beam 1. A 60° chamfer is provided at the outer end of the inner hole of the bushing 7, so that the thread 8 on the cylinder head can be quickly inserted and aligned with the screw sleeve 6.

[0023] When installing Figure 5 As shown, the steps are as follows: (1) The operator places the cylinder head 9 in the installation position in advance and simply fastens the cylinder head fixing bolts; (2) The operator holds the device and aligns each set of gaskets 7 with the two planting wires 8 on the corresponding cylinder head and then installs them so that the planting wires 8 are inserted into the corresponding through holes 103 respectively; (3) The operator rotates the screw sleeve 6 and inserts it into the corresponding planting wire, and manually rotates the outer sleeve to connect the screw sleeve with the planting wire; (4) The operator takes an air gun or a socket wrench and tightens the screw sleeves in diagonal order to align the exhaust pipe installation surfaces on the cylinder head 9 on the same side; (5) The operator tightens the cylinder head bolts one by one according to the process requirements; (6) The operator takes an air gun or a socket wrench and removes the screw sleeve in sequence, and the device can be removed for use.

[0024] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An air-cooled diesel engine cylinder head installation and alignment device, characterized by: It includes a main beam, and a plurality of inclined pads are evenly fixed on one side of the main beam. Mounting holes are respectively provided at both ends of the pads, and screw sleeves are inserted through clearance fit. Screw holes are provided in the screw sleeves for connecting the planting wires on the periphery of the cylinder head exhaust port. Through holes are respectively provided on the main beam corresponding to each mounting hole, and the through holes are concentrically arranged with the corresponding mounting holes, and are used to be sleeved on the planting wires on the periphery of the cylinder head exhaust port.

2. The air-cooled diesel engine cylinder head installation and alignment device according to claim 1 is characterized by: The mounting hole is stepped and the inner end diameter corresponding to one side of the main beam is larger than the outer end diameter. An annular boss is provided on the outer edge of the inner end of the screw sleeve, and the screw sleeve is clamped in the mounting hole through the annular boss to prevent the screw sleeve from slipping out.

3. The air-cooled diesel engine cylinder head installation and alignment device according to claim 2, characterized in that: The inner diameter of the through hole is equal to the inner end diameter of the corresponding mounting hole, so that the screw sleeve can be inserted into the corresponding through hole.

4. The air-cooled diesel engine cylinder head installation and alignment device according to claim 1, characterized in that: A conical chamfer is arranged at the inner end of the screw hole of the screw sleeve so as to be quickly connected with the planting wire.

5. The cylinder head installation and alignment device for an air-cooled diesel engine according to any one of claims 1 to 4, characterized in that: A gasket is provided at each through hole on the other side of the main beam, and the inner hole of the gasket matches the planting wire gap and is used to lean against the exhaust pipe installation surface of the cylinder head.

6. The cylinder head installation and alignment device for an air-cooled diesel engine according to claim 1 or 4, characterized in that: The outer end of the screw sleeve is in the shape of a regular hexagonal column, so that it can be tightened by using an air gun; an outer sleeve is provided on the screw sleeve near the outer end fixing sleeve, so that the screw sleeve can be connected with the planting wire manually.

Images