CN212553642U

CN212553642U - Automatic camshaft tensioning device

Info

Publication number: CN212553642U
Application number: CN202021349125.2U
Authority: CN
Inventors: 杨启明; 余天; 温丽娜
Original assignee: Jiangxi Tongxin Machinery Manufacturing Co ltd
Current assignee: Jiangxi Tongxin Machinery Manufacturing Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-02-19
Anticipated expiration: 2030-07-10

Abstract

The utility model discloses an automatic camshaft tensioning device, which comprises a tensioning mechanism, a bottom plate, a fixing mechanism and a camshaft, the upper surface of the bottom plate is fixedly provided with a tensioning mechanism and a fixing mechanism which are horizontally and oppositely distributed, the fixing mechanism at least comprises a supporting rod fixedly connected with the bottom plate, a portal frame fixedly connected with the arc-shaped bearing frame and a first screw rod movably connected with the portal frame, and a clamping frame fixedly connected with the first screw rod, the upper surface of the bottom plate is fixedly connected with two groups of supporting rods which are horizontally distributed oppositely, the other ends of the two groups of supporting rods are respectively and fixedly connected with a supporting frame, the fixing mechanism is fixedly connected with the camshaft, and the tensioning mechanism at least comprises a mounting plate fixedly connected with the bottom plate, a movable plate fixedly connected with the mounting plate, a second lead screw rotatably connected with the movable plate, and a tensioning block fixedly connected with the second lead screw. The automatic camshaft tensioning device is reasonable in structure, simple to operate and beneficial to popularization and use.

Description

Automatic camshaft tensioning device

Technical Field

The utility model belongs to the technical field of the camshaft, concretely relates to camshaft automatic rising device.

Background

The camshaft is a component of a piston engine and is used for controlling the opening and closing of the valves, although in a four-stroke engine the camshaft rotates at half the speed of the crankshaft (in a two-stroke engine the camshaft rotates at the same speed as the crankshaft), but generally it is still at a high speed and is subjected to a high torque, so that the camshaft is required to be designed at a high level in terms of strength and support, and is generally made of high-quality alloy steel or alloy steel.

Camshaft among the prior art divide into integral structure and components of a whole that can function independently structure, and wherein the integral structure shape is complicated, and the precision requires highly, and the production degree of difficulty is great, and the camshaft of components of a whole that can function independently structure is formed by important spare parts such as high-speed cam, low-speed cam and steel pipe combination, has reduced the processing degree of difficulty, and nevertheless the part installation of components of a whole that can function independently structure need be through tight process that rises, consequently, needs to design an automatic tight device that rises of camshaft urgent need.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic tight device that rises of camshaft to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automatic tight device that rises of camshaft, includes tight mechanism, bottom plate, fixed establishment and camshaft that rises, the last fixed surface of bottom plate installs the tight mechanism and the fixed establishment that rise that the level distributes relatively, fixed establishment include at least with bottom plate fixed connection's branch, with arc bearer fixed connection's portal frame, with portal frame swing joint's first lead screw to and with first lead screw fixed connection's clamping frame, the last fixed surface of bottom plate is connected with two sets of horizontal distributed relatively's branch, two sets of the other end of branch respectively with support frame fixed connection, the support frame is kept away from the one end of branch and the outer wall fixed connection of arc bearer, just the protruding arc end of arc bearer is towards the bottom plate, fixed establishment and camshaft fixed connection, tight mechanism that rises includes at least with bottom plate fixed connection's mounting panel, with mounting panel fixed connection's fly leaf, the tight mechanism that rises, The second screw rod is rotationally connected with the movable plate, and the tensioning block is fixedly connected with the second screw rod.

Preferably, the arc supporting frame is provided with a containing groove for containing the clamping frame, two ends of the arc supporting frame, which are far away from the ground, are fixedly connected with two ends of the portal frame respectively, and one end of the portal frame, which is far away from the arc supporting frame, is provided with a threaded through hole for inserting the first screw rod.

Preferably, one end of the first screw rod facing the arc-shaped bearing frame is fixedly connected with the bearing, one end of the bearing far away from the first screw rod is fixedly connected with the clamping frame, and the concave arc surface of the clamping frame faces the arc-shaped bearing frame.

Preferably, the upper surface of the bottom plate is fixedly connected with a mounting plate which is distributed opposite to the fixing mechanism, and the mounting plate is provided with a through groove for the second screw rod to penetrate through.

Preferably, one end of the second screw rod facing the fixing mechanism is fixedly connected with a tensioning block, and the other end of the second screw rod is welded with a handle.

Preferably, the second screw rod penetrates through the movable plate, the movable plate is in contact with the side wall of the mounting plate, and two groups of bolts which are horizontally distributed relatively are fixedly mounted on the movable plate.

The utility model discloses a technological effect and advantage: this automatic tight device that rises of camshaft, through first lead screw, mutually support between bearing and the portal frame, make first lead screw can drive the clamping frame and reciprocate, rely on mutually supporting between clamping frame and the arc accepting frame, with camshaft cramp fixed, rotate the second lead screw through the handle, make the second lead screw drive the tight piece that rises and remove to the camshaft, rely on the inside that the tight piece that rises that the diameter slightly is greater than the camshaft diameter stretches into the camshaft, it is fixed to rise the spare part of camshaft, rely on the fly leaf, mutually support between bolt and the mounting panel, can adjust the position of tight piece that rises from top to bottom, thereby make the tight piece that rises can get into the inside of camshaft smoothly. The automatic camshaft tensioning device is reasonable in structure, simple to operate and beneficial to popularization and use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the fixing mechanism of the present invention;

fig. 3 is an enlarged view of a point a in the structural schematic diagram 2 of the present invention;

fig. 4 is a schematic view of the tension mechanism of the present invention.

In the figure: the device comprises a tensioning mechanism 1, a bottom plate 2, a fixing mechanism 3, a camshaft 4, a portal frame 5, a first screw rod 6, a support frame 7, a support rod 8, an arc-shaped bearing frame 9, an accommodating groove 10, a bearing 11, a clamping frame 12, a movable plate 13, a bolt 14, a through groove 15, a mounting plate 16, a handle 17, a second screw rod 18 and a tensioning block 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an automatic camshaft tensioning device as shown in figures 1-4, which comprises a tensioning mechanism 1, a bottom plate 2, a fixing mechanism 3 and a camshaft 4, wherein the tensioning mechanism 1 and the fixing mechanism 3 which are horizontally distributed relatively are fixedly arranged on the upper surface of the bottom plate 2, the fixing mechanism 3 at least comprises a support rod 8 fixedly connected with the bottom plate 2, a portal frame 5 fixedly connected with an arc-shaped supporting frame 9, a first lead screw 6 movably connected with the portal frame 5 and a clamping frame 12 fixedly connected with the first lead screw 6, two groups of support rods 8 which are horizontally distributed relatively are fixedly connected on the upper surface of the bottom plate 2, the other ends of the two groups of support rods 8 are respectively fixedly connected with a support frame 7, one end of the support frame 7, which is far away from the support rod 8, is fixedly connected with the outer wall of the arc-shaped supporting frame 9, and the convex arc end of the arc-shaped supporting frame 9 faces the bottom plate, the fixing mechanism 3 is fixedly connected with the camshaft 4, the camshaft 4 is located between the clamping frame 12 and the arc-shaped supporting frame 9, the camshaft 4 at least comprises a steel pipe and a plurality of groups of cams sleeved on the outer wall of the steel pipe, the tensioning mechanism 1 at least comprises a mounting plate 16 fixedly connected with the bottom plate 2, a movable plate 13 fixedly connected with the mounting plate 16, a second lead screw 18 rotatably connected with the movable plate 13, and a tensioning block 19 fixedly connected with the second lead screw 18, and the diameter of the tensioning block 19 is slightly larger than that of the steel pipe of the camshaft 4.

Specifically, the arc supporting frame 9 is provided with a containing groove 10 for containing the clamping frame 12, two ends of the arc supporting frame 9, which are far away from the ground, are fixedly connected with two ends of the portal frame 5 respectively, one end of the portal frame 5, which is far away from the arc supporting frame 9, is provided with a threaded through hole for inserting the first lead screw 6, and the clamping frame 12 can be driven to move up and down by rotating the first lead screw 6.

Specifically, first lead screw 6 is towards the one end and the bearing 11 fixed connection of arc accepting frame 9, and the principle of being connected of first lead screw 16 and bearing 11 is prior art, the one end that first lead screw 6 was kept away from to bearing 11 and clamping frame 12 fixed connection, just the concave cambered surface of clamping frame 12 is towards arc accepting frame 9, through the mutually supporting between clamping frame 12 and the arc accepting frame 9, can press from both sides the tight fixedly with camshaft 4 between clamping frame 12 and the arc accepting frame 9.

Specifically, the upper surface of the bottom plate 2 is fixedly connected with a mounting plate 16 which is distributed opposite to the fixing mechanism 3, the mounting plate 16 is provided with a through groove 15 for the second screw rod 18 to penetrate through, and the position of the tensioning block 19 is adjusted by means of the mutual matching between the mounting plate 16 and the movable plate 13.

Specifically, one end of the second screw rod 18 facing the fixing mechanism 3 is fixedly connected with a tensioning block 19, the other end of the second screw rod 18 is welded with a handle 17, and the handle 17 rotates the second screw rod 18, so that the second screw rod 18 drives the tensioning block 19 to move towards the fixing mechanism 3.

Specifically, the second screw 18 penetrates through the movable plate 13, the movable plate 13 contacts with a side wall of the mounting plate 16, two sets of bolts 14 are fixedly mounted on the movable plate 13, the position of the tensioning block 19 can be adjusted by moving the movable plate 13, and the movable plate 13 and the mounting plate 16 can be fixedly connected by tightening the bolts 14, so that the position of the tensioning block 19 is fixed.

The working principle is as follows: this automatic tight device that rises of camshaft, during the use, place camshaft 4 in the top of arc accept and rest 9, then through the mutual cooperation between first lead screw 6 and bearing 11, rotate first lead screw 6 and drive clamping frame 12 and remove to camshaft 4, until rely on the interact between clamping frame 12 and the arc accept and rest 9 to press from both sides camshaft 4 tight fixedly, then remove fly leaf 13 and adjust the position of tight piece 19 that rises, make tight piece 19 that rises can stretch into camshaft 4's inside, screw up bolt 14 again with fly leaf 13 and mounting panel 16 fixed connection, thereby it moves tight piece 19 to drive to rise through handle 17 rotation second lead screw 18 and remove to camshaft 4, make tight piece 19 that rises stretch into camshaft 4's inside, rise tightly fixedly with the spare part of camshaft 4. The automatic camshaft tensioning device is reasonable in structure, simple to operate and beneficial to popularization and use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an automatic tight device that rises of camshaft, includes tight mechanism (1), bottom plate (2), fixed establishment (3) and camshaft (4) that rises, its characterized in that: the upper surface of the bottom plate (2) is fixedly provided with a tensioning mechanism (1) and a fixing mechanism (3) which are horizontally and relatively distributed, the fixing mechanism (3) at least comprises a supporting rod (8) fixedly connected with the bottom plate (2), a portal frame (5) fixedly connected with an arc bearing frame (9), a first lead screw (6) movably connected with the portal frame (5), and a clamping frame (12) fixedly connected with the first lead screw (6), the upper surface of the bottom plate (2) is fixedly connected with two groups of supporting rods (8) which are horizontally and relatively distributed, the other ends of the two groups of supporting rods (8) are respectively fixedly connected with a supporting frame (7), one end of the supporting frame (7), far away from the supporting rod (8), is fixedly connected with the outer wall of the arc bearing frame (9), the convex arc end of the arc bearing frame (9) faces the bottom plate (2), and the fixing mechanism (3) is fixedly connected with a camshaft (4), the tensioning mechanism (1) at least comprises a mounting plate (16) fixedly connected with the bottom plate (2), a movable plate (13) fixedly connected with the mounting plate (16), a second screw rod (18) rotatably connected with the movable plate (13), and a tensioning block (19) fixedly connected with the second screw rod (18).

2. The automatic camshaft tensioning device as claimed in claim 1, wherein: the arc supporting frame (9) is provided with a containing groove (10) for containing the clamping frame (12), two ends of the arc supporting frame (9), far away from the ground, are fixedly connected with two ends of the portal frame (5) respectively, and one end of the portal frame (5), far away from the arc supporting frame (9), is provided with a threaded through hole for inserting the first screw rod (6).

3. The automatic camshaft tensioning device as claimed in claim 1, wherein: one end, facing the arc-shaped bearing frame (9), of the first screw rod (6) is fixedly connected with the bearing (11), one end, far away from the first screw rod (6), of the bearing (11) is fixedly connected with the clamping frame (12), and the concave arc surface of the clamping frame (12) faces the arc-shaped bearing frame (9).

4. The automatic camshaft tensioning device as claimed in claim 1, wherein: the upper surface of bottom plate (2) fixed connection have with fixed establishment (3) relative distribution's mounting panel (16), logical groove (15) that supply second lead screw (18) to run through are seted up in mounting panel (16).

5. The automatic camshaft tensioning device as claimed in claim 1, wherein: one end of the second screw rod (18) facing the fixing mechanism (3) is fixedly connected with a tensioning block (19), and the other end of the second screw rod (18) is welded with a handle (17).

6. The automatic camshaft tensioning device as claimed in claim 1, wherein: the second screw rod (18) penetrates through the movable plate (13), the movable plate (13) is in contact with the side wall of the mounting plate (16), and two groups of bolts (14) which are horizontally distributed oppositely are fixedly mounted on the movable plate (13).