Limiting device for installation of engine camshaft

Abstract

The utility model provides an engine camshaft installation limiting device, which relates to the technical field of automobile engines and comprises a main frame rod, a sliding rod and shells, the sliding rod is slidably connected in the main frame rod, the shells are arranged at one end of the main frame rod and one end of the sliding rod, a limiting mechanism is arranged on the inner side of each shell, and the limiting mechanisms are arranged on the outer side of the main frame rod. A telescopic mechanism is arranged between the main frame rod and the sliding rod; the sliding rod can be driven to slide up and down in the shell by screwing the threaded rod to rotate forwards and backwards, and when the sliding rod drives the wedge-shaped block to move upwards, the two sides of the wedge-shaped block extrude the bottom ends of the clamping jaws at the same time, so that the top ends of the two clamping jaws get close to the middle, and the top ends of the clamping jaws clamp the engine camshaft; and the tops of the sliding rods abut against the bottoms of the engine camshafts so that the engine camshafts can be clamped more firmly, the two shells, the main frame rods and the sliding rods are connected into a whole, and the two engine camshafts are limited through the main frame rods and the sliding rods.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to an engine camshaft installation and limiting device. Background Art

[0002] The engine camshaft is a key component of a piston engine, primarily responsible for controlling the opening and closing of the valves. It is typically made of high-quality alloy steel to withstand high speeds and torque. The design of the camshaft directly affects the engine's power and operating characteristics. Common camshaft layouts include undermount, midmount, and overmount. Modern engines often use overhead camshafts to improve performance and stability. The camshaft is connected to the crankshaft through various transmission methods (such as gears and chains) to ensure precise valve opening and closing.

[0003] For example, Chinese patent application number 201620254058 discloses an engine camshaft positioning tool, which states that "it includes a tool body, an intake camshaft limiting groove for limiting the intake camshaft and an exhaust camshaft limiting groove for limiting the exhaust camshaft on one side of the tool body, and a boss for being clamped in a groove in the cylinder body, and the intake camshaft limiting groove and the exhaust camshaft limiting groove are both hexagonal groove structures."

[0004] Although the above-mentioned engine camshaft positioning tool solves the problem of fixing the intake camshaft and the exhaust camshaft to a certain extent, since the intake camshaft limiting groove and the exhaust cam limiting groove are hexagonal groove structures, the intake camshaft limiting groove and the exhaust cam limiting groove cannot adapt to intake camshafts and exhaust camshafts of any size, and when the intake camshaft limiting groove or the exhaust cam limiting groove is damaged, the entire tool needs to be replaced, which increases the practical and maintenance costs and is not conducive to the later maintenance of the tool. Therefore, the utility model proposes an engine camshaft installation limit device to solve the above problems. Utility Model Content

[0005] In response to the above problems, the present utility model proposes an engine camshaft installation limit device to solve the problem in the prior art that when the intake camshaft limit groove or the exhaust cam limit groove is damaged, the entire tooling needs to be replaced, which increases the practical and maintenance costs and is not conducive to the later maintenance of the tooling.

[0006] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: an engine camshaft installation limit device, including a main frame rod, a sliding rod and a shell, the main frame rod is internally slidably connected to the sliding rod, one end of the main frame rod and the sliding rod are both provided with a shell, the inner side of the shell is provided with a limit mechanism, and a telescopic mechanism is provided between the main frame rod and the sliding rod.

[0007] A further improvement is that the limiting mechanism includes a clamping claw, a guide block, a sliding rod and a wedge-shaped block, the top of the shell is rotatably connected to the clamping claw, the top of the shell is symmetrically fixedly connected to the guide block, the middle of the two guide blocks is slidably connected to the sliding rod, and the bottom end of the sliding rod is fixedly connected to the wedge-shaped block.

[0008] A further improvement is that: the bottom of the shell is threadedly connected to a threaded rod, the top of the threaded rod is rotatably connected to the bottom end of the sliding rod, the top of the sliding rod and the top and bottom ends of the clamp are hinged with rollers, and the bottom end of the clamp is fitted and connected to the outer wall of the wedge block through the roller.

[0009] A further improvement is that a stopper is symmetrically fixedly connected inside the shell, a rectangular protrusion is fixedly connected to the top of the stopper, and slots matching the rectangular protrusion are symmetrically provided on both sides of the bottom of the wedge-shaped block.

[0010] A further improvement is that a cover plate is provided on the front of the shell, a group of threaded holes are symmetrically provided on both sides of the shell, a group of fixing bolts are symmetrically inserted on both sides of the cover plate, and one end of the fixing bolts is detachably connected to the threaded hole.

[0011] Further improvements are: the telescopic mechanism includes a clamp and a fixed sleeve, one end of the main frame rod is fixedly connected to the clamp, one end of the main frame rod is threadedly connected to the fixed sleeve through a threaded surface, one end of the sliding rod passes through the interior of the clamp, and the interior of the fixed sleeve is provided with a conical groove matching the clamp.

[0012] A further improvement is that: a clamp is fixedly connected to one end of the main frame rod and the sliding rod, connecting bolts are symmetrically inserted at both ends of the clamp, and the clamp is detachably connected to the shell through the connecting bolts.

[0013] The beneficial effects of the present invention are as follows: twisting the threaded rod forward and reverse can drive the sliding rod to slide up and down inside the shell, and when the sliding rod drives the wedge-shaped block to move upward, both sides of the wedge-shaped block squeeze the bottom ends of the clamping claws at the same time, so that the top ends of the two clamping claws approach the middle, so that the top ends of the clamping claws clamp the engine camshaft, and the top of the sliding rod also presses the bottom of the engine camshaft tightly, so as to clamp the engine camshaft more tightly, and the two shells are connected to the main frame rod and the sliding rod as a whole, and the two engine camshafts are limited by the main frame rod and the sliding rod. Position; twist the fixing sleeve to exit the range of the clamp, the fixing sleeve no longer squeezes the clamp through the tapered groove, and the clamp no longer clamps the sliding rod. At this time, the sliding rod can slide straightly inside the main frame rod to change the common length of the main frame rod and the sliding rod. After moving to the appropriate length, twist the fixing sleeve to move toward the clamp, the fixing sleeve squeezes the clamp inward through the tapered groove, and the clamp clamps the sliding rod to lock the position of the sliding rod and adjust the two housings to a suitable distance, which is convenient for embedding the two engine camshafts into the interior of the automobile engine according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the utility model;

[0015] Figure 2 It is a side view of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the shell of the present utility model;

[0017] Figure 4 This is a diagram of the clamping state of the clamping jaws of the present invention.

[0018] Among them: 1. Main frame rod; 2. Sliding rod; 3. Shell; 4. Clamping claw; 5. Guide block; 6. Sliding rod; 7. Wedge block; 8. Roller; 9. Stop block; 10. Threaded rod; 11. Cover plate; 12. Clamping barrel; 13. Fixing sleeve; 14. Threaded surface; 15. Clamp. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] according to Figure 1 、 2 As shown in Figures 3 and 4, this embodiment proposes an engine camshaft installation and limiting device, including a main frame rod 1, a sliding rod 2 and a shell 3, the main frame rod 1 is internally slidably connected to the sliding rod 2, and one end of the main frame rod 1 and the sliding rod 2 are both provided with a shell 3, the inner side of the shell 3 is provided with a limiting mechanism, and a telescopic mechanism is provided between the main frame rod 1 and the sliding rod 2. The two engine camshafts are respectively placed on the top of the two shells 3, and the engine camshafts are fixed to the top of the shell 3 through the limiting mechanism. The two shells 3 are connected as a whole with the main frame rod 1 and the sliding rod 2, and the two engine camshafts are limited by the main frame rod 1 and the sliding rod 2, and the length of the main frame rod 1 and the sliding rod 2 can be changed by the telescopic mechanism to adjust the distance between the two shells 3, so as to facilitate the embedding of the two engine camshafts into the automobile engine according to the actual size.

[0021] The limiting mechanism includes a clamping jaw 4, a guide block 5, a sliding rod 6 and a wedge block 7. The top of the shell 3 is rotatably connected to the clamping jaw 4, the top of the shell 3 is symmetrically fixedly connected to the guide block 5, the middle of the two guide blocks 5 is slidably connected to the sliding rod 6, and the bottom end of the sliding rod 6 is fixedly connected to the wedge block 7.

[0022] The bottom of the shell 3 is threadedly connected to a threaded rod 10, the top of the threaded rod 10 is rotatably connected to the bottom end of the sliding rod 6, the top of the sliding rod 6 and the top and bottom ends of the clamping jaw 4 are hinged with rollers 8, and the bottom end of the clamping jaw 4 is fitted and connected to the outer wall of the wedge block 7 through the roller 8.

[0023] The camshaft is then moved back and forth, and the camshaft is brought into contact with the drive lever 6 and the drive shaft 6. When the camshaft is moved back and forth, the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved back and forth, and the drive lever 6 is moved

[0024] The inside of the shell 3 is symmetrically fixedly connected with a stopper 9, the top of the stopper 9 is fixedly connected with a rectangular protrusion, and the two sides of the bottom of the wedge block 7 are symmetrically provided with a card groove matching the rectangular protrusion. The stopper 9 and the guide block 5 cooperate to limit the movement of the sliding rod 6, that is, to limit the range of movement of the wedge block 7, and then to limit the range of rotation of the clamping jaw 4, so that the clamping jaw 4 can only rotate within a certain range before and after the size of the engine camshaft, which is convenient for clamping the engine camshaft.

[0025] A cover plate 11 is provided on the front of the shell 3, and a group of threaded holes are symmetrically provided on both sides of the shell 3. A group of fixing bolts are symmetrically inserted on both sides of the cover plate 11, and one end of the fixing bolts is detachably connected to the threaded hole. The cover plate 11 is attached to the front of the shell 3, and then two groups of fixing bolts are respectively inserted into the two sides of the cover plate 11, and then the fixing bolts are screwed into the inside of the threaded holes to fix the cover plate 11 to the front of the shell 3. The interior of the shell 3 is closed by the cover plate 11, which protects the limiting mechanism on the shell 3.

[0026] The clamp 12 clamps the sliding rod 2 to lock the position of the sliding rod 2, so as to adjust the two housings 3 to a suitable spacing, so as to facilitate the two engine camshafts to be embedded in the automobile engine according to actual needs.

[0027] The main frame rod 1 and one end of the sliding rod 2 are fixedly connected with a clamp 15, and connecting bolts are symmetrically inserted at both ends of the clamp 15. The clamp 15 is detachably connected to the shell 3 through the connecting bolts. After the two ends of the clamp 15 are affixed to the shell 3, the connecting bolts are passed through the two ends of the clamp 15 and screwed into the interior of the shell 3. The clamp 15 and the shell 3 are fixed as a whole, and are used to fix the two shells 3 on one end of the main frame rod 1 and the sliding rod 2 respectively.

[0028] The engine camshaft is installed with a limiting device. The threaded rod 10 is turned forward and backward to drive the slide bar 6 to slide up and down inside the shell 3. When the slide bar 6 drives the wedge block 7 to move upward, the two sides of the wedge block 7 squeeze the bottom end of the clamping jaw 4 at the same time, so that the top ends of the two clamping jaws 4 are close to the middle, so that the top ends of the clamping jaws 4 clamp the engine camshaft, and the top of the slide bar 6 also presses the bottom of the engine camshaft to clamp the engine camshaft more tightly, and the two shells 3 are connected to the main frame rod 1 and the slide bar 2 as a whole, and the two engine camshafts are limited by the main frame rod 1 and the slide bar 2; The fixed sleeve 13 exits the range of the collet 12, and the fixed sleeve 13 no longer squeezes the collet 12 through the tapered groove, and the collet 12 no longer clamps the sliding rod 2. At this time, the sliding rod 2 can slide linearly inside the main frame rod 1 to change the common length of the main frame rod 1 and the sliding rod 2. After moving to the appropriate length, the fixed sleeve 13 is twisted to move toward the collet 12. The fixed sleeve 13 squeezes the collet 12 inward through the tapered groove, and the collet 12 clamps the sliding rod 2 to lock the position of the sliding rod 2 and adjust the two housings 3 to a suitable distance, so as to facilitate the embedding of the two engine camshafts into the interior of the automobile engine according to actual needs.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An engine camshaft mounting and limiting device, comprising a main frame rod (1), a sliding rod (2) and a housing (3), characterized in that: The main frame rod (1) is internally slidably connected to a sliding rod (2), one end of each of the main frame rod (1) and the sliding rod (2) is provided with a shell (3), the inner side of the shell (3) is provided with a limiting mechanism, and a telescopic mechanism is provided between the main frame rod (1) and the sliding rod (2); The limiting mechanism comprises a clamping claw (4), a guide block (5), a sliding rod (6) and a wedge-shaped block (7); the top of the shell (3) is rotatably connected to the clamping claw (4); the top of the shell (3) is symmetrically fixedly connected to the guide block (5); the middle of the two guide blocks (5) is slidably connected to the sliding rod (6); the bottom end of the sliding rod (6) is fixedly connected to the wedge-shaped block (7).

2. The engine camshaft installation and limiting device according to claim 1, characterized in that: The bottom of the housing (3) is threadedly connected to a threaded rod (10), the top end of the threaded rod (10) is rotatably connected to the bottom end of the slide rod (6), the top end of the slide rod (6) and the top and bottom ends of the clamping jaw (4) are hingedly connected to rollers (8), and the bottom end of the clamping jaw (4) is fitted and connected to the outer wall of the wedge block (7) through the roller (8).

3. The engine camshaft installation and limiting device according to claim 1, characterized in that: A stopper (9) is symmetrically fixedly connected to the interior of the housing (3), a rectangular protrusion is fixedly connected to the top of the stopper (9), and slots matching the rectangular protrusion are symmetrically provided on both sides of the bottom of the wedge-shaped block (7).

4. The engine camshaft installation and limiting device according to claim 1, characterized in that: A cover plate (11) is provided on the front of the shell (3), a group of threaded holes are symmetrically provided on both sides of the shell (3), and a group of fixing bolts are symmetrically inserted on both sides of the cover plate (11), one end of the fixing bolt is detachably connected to the threaded hole.

5. The engine camshaft installation and limiting device according to claim 1, characterized in that: The telescopic mechanism comprises a clamp (12) and a fixed sleeve (13), one end of the main frame rod (1) is fixedly connected to the clamp (12), one end of the main frame rod (1) is threadedly connected to the fixed sleeve (13) through a threaded surface (14), one end of the sliding rod (2) passes through the interior of the clamp (12), and the interior of the fixed sleeve (13) is provided with a tapered groove matching the clamp (12).

6. The engine camshaft installation and limiting device according to claim 1, characterized in that: One end of the main frame rod (1) and the sliding rod (2) is fixedly connected with a clamp (15), and connecting bolts are symmetrically inserted at both ends of the clamp (15). The clamp (15) is detachably connected to the housing (3) via the connecting bolts.

Images