CN210255294U

CN210255294U - Fixing device for engine camshaft cover

Info

Publication number: CN210255294U
Application number: CN201921381467.XU
Authority: CN
Inventors: 习贵平
Original assignee: Wuxi Haile Machinery Co Ltd
Current assignee: Wuxi Haile Machinery Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-07
Anticipated expiration: 2029-08-23

Abstract

The utility model relates to a fixing device for an engine camshaft cover, which is arranged on a rotatable bottom plate; the method is characterized in that: the device comprises a first jacking device, a second jacking device, a third jacking device, a connecting block and a pressing plate connected to the connecting block in a swinging manner; the first jacking device, the second jacking device, the third jacking device and the connecting block surround and prop against the camshaft cover; the pressure plate presses the camshaft cover. The problem of adopt two equipment to process that current scheme caused increase manufacturing cost, need carry out twice clamping work piece respectively, cause the processing position skew to appear and cause the damage of camshaft cover etc. is solved.

Description

Fixing device for engine camshaft cover

Technical Field

The utility model relates to an equipment frock, concretely relates to a fixing device for engine camshaft cover.

Background

Generally, a camshaft is a component in a piston engine that functions to control valve and closing motion. Camshaft speeds are high and are required to withstand significant torque. The camshaft is designed with high requirements on strength and support, and the material of the camshaft is generally alloy steel. The camshaft cover is matched with the camshaft for use, and after being assembled, the camshaft cover and the connecting rod form an annular bearing in a surrounding mode, and the annular bearing and the crankshaft perform mechanical reciprocating motion and circular motion conversion together. The requirement on the machining precision of the camshaft cover is high. Camshaft covers generally involve machining of the faces and bores of the camshaft cover. The processing of the two procedures needs to be respectively carried out on two machines, which is very time-consuming and labor-consuming. Due to the irregular shape of the camshaft cover, the clamping and positioning of the camshaft cover are always difficult.

According to the existing scheme, two processing devices are adopted to perform surface processing and hole processing on the camshaft cover respectively. The camshaft cover is vertically pressed down by a pressure lever. Screws are used to pass through holes on the camshaft cover to fix the camshaft cover. Such a solution has the following problems: (1) two devices are adopted for processing, so that the processing procedures are increased, and the production cost is increased; (2) the workpiece needs to be clamped twice, which is time-consuming and labor-consuming; (3) the workpiece is clamped twice, so that the clamping positions of the workpiece are deviated twice, and the machining positions are deviated; (4) the cam shaft cover is fixed by a pressing rod and a screw in a hard connection mode, so that the cam shaft cover is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a be not enough to prior art, the utility model discloses a fixing device for engine camshaft lid to adopt two equipment to process and increased manufacturing cost, need carry out twice clamping work piece respectively, cause the processing position to appear squinting and cause the damage scheduling problem of camshaft lid among the solution prior art.

The utility model discloses the technical scheme who adopts as follows:

a fixture for an engine camshaft cover, the fixture being mounted on a rotatable base plate;

the device comprises a first jacking device, a second jacking device, a third jacking device, a connecting block and a pressing plate connected to the connecting block in a swinging manner; the first jacking device, the second jacking device, the third jacking device and the connecting block surround and prop against the camshaft cover; the pressure plate presses the camshaft cover.

The further technical scheme is as follows: the first jacking device comprises a first fixing pin, a first mounting block and a first elastic device; the first elastic device pushes the first fixing pin to move along the first mounting block, and the first fixing pin abuts against the camshaft cover.

The further technical scheme is as follows: comprises a placing block; the camshaft cover is placed on the placing block.

The further technical scheme is as follows: the second jacking device comprises a second fixing pin and a second mounting block; the second fixing pin is fixedly arranged on the second mounting block and abuts against the camshaft cover.

The further technical scheme is as follows: the third jacking device comprises a third fixing pin, a second elastic device and a jacking power device; the jacking power device drives the third fixing pin and the second elastic device to move; the second elastic device pushes the third fixing pin to move.

The further technical scheme is as follows: the connecting block is connected with the pressure plate through a swinging pin shaft; the pressing plate swings along the swinging pin shaft; and the connecting block is provided with a supporting rib for fixing the connecting block.

The further technical scheme is as follows: a pressing plate power device is arranged on the bottom plate; the fixing devices are symmetrically arranged on two sides of the pressing plate power device.

The further technical scheme is as follows: one end of the pressing plate close to the camshaft cover presses the camshaft cover; the pressure plate is driven by a pressure plate power device; the driving end of the pressing plate power device is connected with one end, far away from the camshaft cover, of the pressing plate.

The utility model has the advantages as follows: the utility model discloses a fixing device for engine camshaft cover adopts rotatable bottom plate to make and only need an equipment just can accomplish the processing in face and hole. And a jacking device and a connecting block are adopted to surround and jack the camshaft cover. The fixing device for the engine camshaft cover brings the following effects: (1) the face and the hole can be processed by only one device, so that the processing procedures are reduced, and the production cost is reduced; (2) the processing of the cover surface and the hole of the camshaft can be finished only by once clamping, so that the time and the labor are saved; (3) the first tightening device and the third tightening device are elastically connected to compress the camshaft cover, so that the camshaft cover is not damaged; (4) the jacking device and the connecting block are adopted to surround and jack the camshaft cover, so that the camshaft cover is guaranteed to be fixed, and the deviation of a machining position cannot occur.

Drawings

Fig. 1 is a schematic view of the top-view assembly structure of the present invention.

Fig. 2 is a schematic view of the assembly structure of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

In the figure: 1. a first tightening device; 11. a first fixing pin; 12. a first mounting block; 13. a first elastic device; 14. tightly supporting the fixed block; 15. a set screw; 2. a second tightening device; 21. a second fixing pin; 22. a second mounting block; 3. a third jacking device; 31. a third fixing pin; 32. a second elastic device; 33. tightly pushing the power device; 34. a power block; 4. connecting blocks; 41. swinging the pin shaft; 42. supporting ribs; 5. pressing a plate; 6. placing the blocks; 7. a platen power unit; 8. a base plate; 81. a sole plate power device; 82. an oil circuit rod.

Detailed Description

The following describes a specific embodiment of the present embodiment with reference to the drawings.

Fig. 1 is a schematic view of the top-view assembly structure of the present invention. Fig. 3 is a schematic structural diagram of the present invention. Referring to fig. 1 and 3, the present invention discloses a fixing device for a camshaft cover of an engine. The direction of X in the figure is the front end of the front view of the utility model, and the direction of Y in the figure is the right end of the front view of the utility model. The fixing means are mounted on a rotatable base plate 8. The fixing device for the engine camshaft cover comprises a first jacking device 1, a second jacking device 2, a third jacking device 3, a connecting block 4 and a pressing plate 5 connected to the connecting block 4 in a swinging mode.

The first tightening device 1, the second tightening device 2, the third tightening device 3 and the connecting block 4 surround and tighten the camshaft cover. The pressing plate 5 presses the camshaft cover.

Preferably, the bottom plate 8 is a straight plate. The fixing means for the engine camshaft cover is a plurality of fixing means mounted in parallel on the upper end of the base plate 8. The sole plate 8 is powered by sole plate power means 81. Preferably, the floor power means 81 is a swivel joint. The floor power unit 81 is connected to the floor 8 through an oil rod 82. The floor power unit 81 uses hydraulic oil as a medium. The drive end of the floor power unit 81 is connected to an oil rod 82. The right end of the oil rod 82 is connected to the drive end of the floor power unit 81. The left end of the oil rod 82 is connected to the base plate 8.

The floor power means 81 is a swivel joint, the choice of the type of swivel joint being common knowledge. The person skilled in the art can choose the type of swivel joint, MAPH200W, for example, according to the working conditions of the device.

Both the face and the bore of the camshaft cover require machining, usually two pieces of equipment are required to machine the face and the bore, respectively. The bottom plate power device 81 rotates the bottom plate 8 through the oil rod 82. When the camshaft cover is machined, the upper surface of the camshaft cover and the hole of the camshaft cover need to be machined. When the machining of the upper surface of the camshaft cover is completed, the rotation of the bottom plate 8 drives the fixing device for the camshaft cover of the engine to rotate. The camshaft cover can be machined by clamping the camshaft cover at one time. The processing position of camshaft cover hole is located the side surface of camshaft cover, drives the camshaft cover rotatory through bottom plate 8, can be very convenient process the upper surface of camshaft cover and the hole of camshaft cover side surface.

The fixing device for the engine camshaft cover further comprises a placing block 6. The camshaft cover is placed on the placing block 6.

Preferably, the placement block 6 is U-shaped. Because one end of the camshaft cover is arc-shaped, the camshaft cover can be conveniently placed by the placing block 6 in order to fix the camshaft cover conveniently. The camshaft cover is placed horizontally on the placement block 6. The placing block 6 is fixedly arranged on the bottom plate 8. The lower surface of the placing block 6 is attached to the upper surface of the bottom plate 8.

The first jacking device 1 is arranged on the left side of the placing block 6, and the first jacking device 1 jacks the camshaft cover from the left side of the camshaft cover.

The first tightening device 1 includes a first fixing pin 11, a first mounting block 12, and a first elastic device 13. The first elastic device 13 pushes the first fixing pin 11 to move along the first mounting block 12, and the first fixing pin 11 is pressed against the camshaft cover.

The first mounting block 12 is fixedly mounted on the base plate 8. The lower surface of the first mounting block 12 is in abutment with the upper surface of the base plate 8. The side surface of the first mounting block 12 is opened with a first through hole.

The first mounting block 12 is provided with a jacking fixing block 14. The jacking fixing block 14 is fixedly arranged at the left end of the first mounting block 12. The left end of the first through hole is sealed by the abutting fixing block 14.

The first fixing pin 11 is inserted into the first through hole. A first elastic device 13 is arranged between the first fixing pin 11 and the abutting fixing block 14. Preferably, the first elastic means 13 is a spring. The left end of the first elastic device 13 is connected with a jacking fixing block 14. The right end of the first elastic device 13 is connected with the first fixing pin 11. The first elastic device 13 pushes the first fixing pin 11 to move along the first through hole by abutting against the fixed block 14.

The first tightening device 1 further includes a set screw 15. A set screw 15 is provided at the upper end of the first mounting block 12. A set screw 15 is screwed from the upper end of the first mounting block 12, and the set screw 15 restricts the movement of the first fixing pin 11.

The first elastic means 13 pushes the first fixing pin 11 to move rightward. The right end of the first fixing pin 11 abuts against the left end of the camshaft cover. At this time, the position of the first fixing pin 11 needs to be fixed. When the set screw 15 is screwed into the first mounting block 12, the lower end of the set screw 15 contacts the first fixing pin 11. When the set screw 15 is fully tightened, the set screw 15 fixes the first fixing pin 11.

The sizes of the camshaft covers are different due to different specifications of the camshaft covers. The first tightening device 1 has elasticity to adapt to different sizes of camshaft covers. And the set screw 15 can fix the first fixing pin 11 well. The first tightening means 1 can provide a sufficient tightening force.

The second tightening device 2 is arranged at the right side of the placing block 6. The second tightening device 2 is pressed against the camshaft cover from the right end of the camshaft cover.

The second tightening device 2 includes a second fixing pin 21 and a second mounting block 22. The second fixing pin 21 is fixedly mounted on the second mounting block 22, and the second fixing pin 21 abuts against the camshaft cover.

The second mounting block 22 is fixedly mounted on the base plate 8. The lower surface of the second mounting block 22 abuts the upper surface of the base plate 8.

The second fixing pin 21 is fixedly mounted to the left end of the second mounting block 22. The right end of the second fixing pin 21 is fixedly connected with the second mounting block 22, and the left end of the second fixing pin 21 props against the camshaft cover.

The second jacking device 2 is matched with the first jacking device 1 to position the camshaft cover. The second fixing pin 21 is fixed in position and the first fixing pin 11 is moved in position. The second jacking device 2 jacks the right end of the camshaft cover, so that the first fixing pin 11 can be conveniently adjusted to jack tightly.

The third tightening device 3 is installed at the rear end of the placing block 6. The third tightening means 3 is pressed against the camshaft cover from the rear end thereof.

Fig. 2 is a schematic view of the assembly structure of the present invention. As shown in fig. 1, 2 and 3, the third tightening means 3 includes a third fixing pin 31, a second elastic means 32 and a tightening power means 33. The jacking power device 33 drives the third fixing pin 31 and the second elastic device 32 to move. The second elastic means 32 pushes the third fixing pin 31 to move.

Preferably, the tightening power device 33 is a cylinder. The jacking power device 33 is mounted at the lower end of the bottom plate 8. A third fixing pin 31 and a second elastic means 32 are installed at the upper end of the base plate 8.

The third tightening device 3 further includes a power block 34. The power block 34 is mounted on the upper end of the base plate 8. The driving end of the jacking power device 33 penetrates through the bottom plate 8 to be connected with a power block 34.

One end of the power block 34 close to the camshaft cover is provided with a jacking hole. The tightening hole is provided with a third fixing pin 31 and a second elastic device 32. Preferably, the second elastic means 32 is a spring. The second elastic means 32 is mounted to the rear end of the third fixing pin 31. The second elastic device 32 pushes the third fixing pin 31 to move along the tightening hole.

The jacking power device 33 drives the third fixing pin 31, the second elastic device 32 and the power block 34 to move up and down. The second elastic means 32 pushes the third fixing pin 31 to move forward. When the camshaft cover needs to be clamped, the third fixing pin 31, the second elastic device 32 and the power block 34 move upwards. When the camshaft cover needs to be disassembled, the third fixing pin 31, the second elastic device 32 and the power block 34 move downwards. The cam shaft cover is greatly convenient to disassemble and assemble.

The jacking power device 33 is a cylinder, and the selection of the type of the cylinder belongs to the common knowledge. The skilled person can select a cylinder according to the operation of the device, for example, the type HTB-SDMA20 × 35N.

The connecting block 4 is installed at the front end of the placing block 6. The connecting block 4 abuts against the camshaft cover from the front end thereof.

The connecting block 4 is connected with the pressure plate 5 through a swinging pin shaft 41. The pressing plate 5 swings along the swing pin 41. The connecting block 4 is provided with a supporting rib 42 for fixing the connecting block 4.

The connecting block 4 is fixedly arranged on the bottom plate 8. And support ribs 42 are symmetrically arranged at the front end of the fixed connecting block 4. Preferably, the support ribs 42 are triangular. The two supporting ribs 42 are respectively arranged at the left end and the right end of the front surface of the connecting block 4.

In addition to the function of the connecting block 4 to bear against the camshaft cover, the connecting block 4 also serves as a pivot support point for the pressure plate 5. The firmness of the connecting piece 4 is of great importance. The support rib 42 plays a good role in fixedly supporting the connecting block 4. The bracing ribs 42 reinforce the structural strength of the connecting block 4.

The middle position of the pressure plate 5 is connected with the upper end of the connecting block 4. The swinging pin 41 passes through the connecting block 4 and the pressing plate 5 in sequence. The pressing plate 5 swings up and down along the swing pin 41.

The bottom plate 8 is provided with a pressing plate power device 7. The fixing devices are symmetrically arranged at two sides of the pressure plate power device 7.

One end of the pressing plate 5 close to the camshaft cover presses the camshaft cover. The platen 5 is driven by a platen power unit 7. The driving end of the pressing plate power device 7 is connected with one end of the pressing plate 5 far away from the camshaft cover.

Preferably, the platen power unit 7 is a cylinder. The rear end of the pressing plate 5 presses the upper end of the camshaft cover. The front end of the pressure plate 5 is connected with the driving end of a pressure plate power device 7. Preferably, the rear end of the pressing plate 5 is U-shaped. The pressing plates 5 press the camshaft cover from both left and right ends of the upper surface of the camshaft cover, respectively. The pressing plate 5 presses the camshaft cover from two positions, and the stability of the camshaft cover is guaranteed.

The pressure plate power device 7 is an air cylinder, and the selection of the type of the air cylinder belongs to the common knowledge. The skilled person will be able to select the type of cylinder, HTB-SD50 × 45N, for example, depending on the operation of the device.

The number of the fixing devices for the engine camshaft cover is two. The fixing devices for the engine camshaft cover are symmetrically arranged at the front end and the rear end of the pressure plate power device 7. Two pressing plates 5 share one pressing plate power device 7 to supply power, so that the production cost can be reduced. The pressing plate power device 7 can drive the two pressing plates 5 at a time and can press the two camshaft covers simultaneously.

In the present embodiment, the bottom plate 8 is described as a straight plate, but the present invention is not limited thereto, and may be a bottom plate having another shape within a range capable of exhibiting its function.

In the present embodiment, the floor power unit 81 is described as a swivel joint, but the present invention is not limited thereto, and may be another power unit within a range capable of functioning.

In the present embodiment, the first elastic device 13 is described as a spring, but the present invention is not limited thereto, and may be another elastic device within a range capable of functioning.

In the present embodiment, the tightening power unit 33 is described as a cylinder, but the present invention is not limited thereto, and may be another power unit within a range capable of functioning.

In the present embodiment, the second elastic device 32 is described as a spring, but the present invention is not limited thereto, and may be another elastic device within a range capable of functioning.

In the present embodiment, the platen power unit 7 is described as an air cylinder, but the present invention is not limited thereto, and may be another power unit within a range capable of functioning.

In the present specification, terms such as "U-shaped" and "triangular" are used, and these terms are not exactly "U-shaped" and "triangular" and may be in a state of "substantially U-shaped" and "substantially triangular" within a range in which the functions thereof can be exerted.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. A fixing device for an engine camshaft cover, said fixing device being mounted on a rotatable base plate (8); the method is characterized in that: the device comprises a first tightening device (1), a second tightening device (2), a third tightening device (3), a connecting block (4) and a pressing plate (5) connected to the connecting block (4) in a swinging mode; the first tightening device (1), the second tightening device (2), the third tightening device (3) and the connecting block (4) surround and tighten the camshaft cover; the pressing plate (5) presses the camshaft cover.

2. The fixing device for an engine camshaft cover according to claim 1, characterized in that: the first jacking device (1) comprises a first fixing pin (11), a first mounting block (12) and a first elastic device (13); the first elastic device (13) pushes the first fixing pin (11) to move along the first mounting block (12), and the first fixing pin (11) abuts against the camshaft cover.

3. The fixing device for an engine camshaft cover according to claim 1, characterized in that: comprises a placing block (6); the camshaft cover is placed on the placing block (6).

4. The fixing device for an engine camshaft cover according to claim 1, characterized in that: the second jacking device (2) comprises a second fixing pin (21) and a second mounting block (22); the second fixing pin (21) is fixedly arranged on the second mounting block (22), and the second fixing pin (21) abuts against the camshaft cover.

5. The fixing device for an engine camshaft cover according to claim 1, characterized in that: the third tightening device (3) comprises a third fixing pin (31), a second elastic device (32) and a tightening power device (33); the jacking power device (33) drives the third fixing pin (31) and the second elastic device (32) to move; the second elastic device (32) pushes the third fixing pin (31) to move.

6. The fixing device for an engine camshaft cover according to claim 1, characterized in that: the connecting block (4) is connected with the pressing plate (5) through a swinging pin shaft (41); the pressing plate (5) swings along the swinging pin shaft (41); and a supporting rib (42) for fixing the connecting block (4) is arranged on the connecting block (4).

7. The fixing device for an engine camshaft cover according to claim 1, characterized in that: a pressing plate power device (7) is arranged on the bottom plate (8); the fixing devices are symmetrically arranged on two sides of the pressure plate power device (7).

8. The fixing device for an engine camshaft cover according to claim 7, characterized in that: one end of the pressing plate (5) close to the camshaft cover presses the camshaft cover; the pressing plate (5) is driven by a pressing plate power device (7); the driving end of the pressing plate power device (7) is connected with one end, far away from the camshaft cover, of the pressing plate (5).