CN220118577U - Chain tensioning device and chain transmission mechanism - Google Patents

Abstract

The utility model relates to the technical field of laser processing equipment, in particular to a chain tensioning device and a chain transmission mechanism, wherein the chain tensioning device comprises a chain wheel and a chain wheel mounting seat, the chain wheel is arranged on the chain wheel mounting seat, the chain wheel comprises a chain wheel support, a double-head screw rod and an adjusting nut, one end of the double-head screw rod is in threaded connection with the chain wheel support, the other end of the double-head screw rod is in threaded connection with the chain wheel mounting seat, the axis of the double-head screw rod is parallel to the plane where a chain wheel is arranged, and the adjusting nut is sleeved on one side, close to the chain wheel support, of the chain wheel mounting seat. The utility model has simple and reasonable structure, is convenient to manufacture and install, is convenient to disassemble and is convenient to maintain; the chain is reasonable in stress, and the tensioning structure is not easy to fail after long-time use; the utility model has high structural stability and accurate and reliable transfer motion; the structure is guided more accurately, the chain runs more stably, and noise and abrasion of the chain and the chain wheel are reduced.

Description

Chain tensioning device and chain transmission mechanism

Technical Field

The utility model relates to the technical field of laser processing equipment, in particular to a chain tensioning device and a chain transmission mechanism.

Background

In the prior art, the cutting table top of a part of laser cutting machines is in a front-back parallel exchange type, and a transmission mechanism is needed for realizing the mode. The chain transmission has the advantages of high transmission precision, long transmission distance, low use cost and the like, and is widely applied to various industries, so that most of transmission mechanisms adopted by the laser cutting machine are also chain transmission mechanisms.

However, as the sprocket rotates, a load is applied to the chain, which tends to cause inelastic deformation or permanent deformation of the chain. When the load is bigger, deformation is more obvious, so that the chain wheel structure has the risk of chain elongation when being stressed for a long time, and the chain is too loose to normally operate.

Disclosure of Invention

The utility model provides a chain tensioning device and a chain transmission mechanism, aiming at the problem that a chain of a transmission mechanism in the existing laser cutting machine is deformed and stretched when the chain is stressed and operated for a long time.

In order to achieve the above objective, in a first aspect, the present utility model adopts a technical scheme that the chain tensioning device includes a sprocket, a sprocket mounting seat, a sprocket support, a double-headed screw, and an adjusting nut, wherein the sprocket is disposed on the sprocket mounting seat, one end of the double-headed screw is in threaded connection with the sprocket support, the other end of the double-headed screw is in threaded connection with the sprocket mounting seat, an axis of the double-headed screw is parallel to a plane where the sprocket is located, and the adjusting nut is sleeved on one side of the sprocket mounting seat, which is close to the sprocket support.

Preferably, the sprocket set up in the middle part of sprocket mount pad, the double-end screw rod is provided with two and is located respectively the upper and lower both sides of sprocket.

Preferably, the chain wheel support further comprises a threaded plug, one end of the threaded plug is fixed to the chain wheel support through threads, and the other end of the threaded plug penetrates through the chain wheel mounting seat; the axis of the thread plug is parallel to the axis of the double-headed screw rod, and the thread plug is arranged between the two double-headed screw rods.

Preferably, the middle part of sprocket mount pad has been seted up the guiding hole, the interval is provided with two guide slots in the guiding hole, all be provided with the guide ring in the guide slot, the screw thread jam pass the guide slot just the guide ring all cup joint in the screw thread is stopped up.

Preferably, the sprocket is rotatably arranged on the sprocket mounting seat through a deep groove ball bearing.

Preferably, the deep groove ball bearing is fixed on the sprocket mounting seat through a circlip for a shaft, and the sprocket is fixed on the deep groove ball bearing through a circlip for a hole.

In a second aspect, the utility model further provides a chain transmission mechanism, which comprises the chain tensioning device, a chain, a rear sprocket and a rear sprocket support, wherein the rear sprocket is rotatably arranged on the rear sprocket support, and the chain is arranged between the sprocket and the rear sprocket.

Preferably, the rear sprocket support is provided with an axle through deep groove ball bearings, both ends of the axle are fixed with the rear sprockets, one of the rear sprockets is provided with the chain between the sprockets, and the other is provided with a power chain.

Preferably, the chain is fixed with a table top pull block which can be mounted at the joint of the upper table top part and the lower table top part of the laser cutting machine.

Preferably, the chain is further fixed with a chain guide rail, and the chain guide rail can be fixed with the laser cutting machine body.

The beneficial effects of the utility model are as follows:

1. the chain tensioning device provided by the utility model has a simple and reasonable structure, is convenient to manufacture and install, is convenient to disassemble and is convenient to maintain.

2. The chain tensioning device provided by the utility model has reasonable chain stress, and the tensioning structure is not easy to fail after long-time use.

3. The chain tensioning device provided by the utility model has the advantages of high structural stability and accurate and reliable transmission movement.

4. The chain tensioning device provided by the utility model has the advantages that the structure is more accurate in guiding, the chain is more stable in running, and the noise and abrasion of the chain and the chain wheel are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a chain tensioner according to the present utility model.

Fig. 2 is a schematic perspective view of a chain transmission mechanism according to the present utility model.

Fig. 3 is a reference view of a use state of the chain transmission mechanism according to the present utility model.

In the figure: 1. sprocket support, 2, adjusting nut, 3, sprocket mount pad, 4, double-end screw, 5, screw thread jam, 6, chain, 7, sprocket, 8, circlip for axle, 9, deep groove ball bearing, 10, circlip for hole, 11, chain guide rail, 12, guide ring, 13, mesa pull block, 14, power chain, 15, back sprocket, 16, shaft, 17, back sprocket support, 18, laser cutting machine body, 19, mesa part.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

Example 1

As shown in fig. 1, in this embodiment, the chain tensioning device provided by the utility model includes a sprocket 7 and a sprocket mounting seat 3, the sprocket 7 is disposed on the sprocket mounting seat 3, and further includes a sprocket support 1, a double-ended screw 4 and an adjusting nut 2, one end of the double-ended screw 4 is in threaded connection with the sprocket support 1, the other end of the double-ended screw 4 is in threaded connection with the sprocket mounting seat 3, the axis of the double-ended screw 4 is parallel to the plane where the sprocket 7 is located, and the adjusting nut 3 is sleeved on one side of the sprocket mounting seat 3 close to the sprocket support 1. Wherein, adjusting nut 2 can set up to hexagonal flange nut, and the front end screw thread of double-end screw rod 4 adopts left-hand thread for fix at sprocket support 1's rear end screw thread adopts right-hand thread, when the adjusting nut 2 on the clockwise rotation double-end screw rod 4 respectively, adjusting nut 2 can drive sprocket mount pad 3 and move forward, realizes the tensioning of chain 6.

In this embodiment, as shown in fig. 1, the sprocket 7 is disposed in the middle of the sprocket mount 3, and the double-headed screws 4 are disposed in two and are located on the upper and lower sides of the sprocket 7, respectively, so that it is more stable when adjusting.

In order to make the sprocket mounting seat 3 more stable when being tensioned and moved, a thread plug 5 is further arranged in the embodiment, one end of the thread plug 5 is fixed on the sprocket support 1 through threads, and the other end of the thread plug 5 passes through the sprocket mounting seat 3; the axis of the thread plug 5 is parallel to the axis of the double-headed screw 4, and the thread plug 5 is provided between the two double-headed screws 4. Specifically, the guiding hole has been seted up at the middle part of sprocket mount pad 3, and the interval is provided with two guide ways in the guiding hole, all is provided with guide ring 12 in the guide way, and screw thread jam 5 passes the guide way and the guide ring all cup joints in screw thread jam 5. During installation, lubricating oil or lubricating grease can be smeared on the surfaces of the two guide rings 12, the two guide rings 12 are respectively arranged in the guide grooves of the chain wheel mounting seat 3, and then the chain wheel mounting seat 3 is fixed on the chain wheel support 1 through the guide holes.

As shown in fig. 1, the sprocket 7 and the sprocket mounting 3 mainly depend on a bearing structure. Specifically, the sprocket 7 is rotatably mounted on the sprocket mounting base 3 via a deep groove ball bearing 9, the deep groove ball bearing 9 is fixed on the sprocket mounting base 3 via a circlip 8 for shaft, and the sprocket 7 is fixed on the deep groove ball bearing 9 via a circlip 10 for hole.

Example two

As shown in fig. 2, the present utility model further provides a chain transmission mechanism, which includes the above chain tensioning device, and further includes a chain 6, a rear sprocket 15 and a rear sprocket support 17, wherein the rear sprocket 15 is rotatably disposed on the rear sprocket support 17, and the chain 6 is disposed between the sprocket 7 and the rear sprocket 15. When in installation, the chain wheel support 1 is fixed on the front side of the laser cutting machine body 18 through screw installation, and the rear chain wheel support 17 is fixed on the rear side of the laser cutting machine body 18 through screw installation. Specifically, the rear sprocket support 17 is provided with an axle 16 through deep groove ball bearing rotation, both ends of the axle 16 are fixed with rear sprockets 15, a chain 6 is arranged between one of the rear sprockets 15 and the sprocket 7, and the other is provided with a power chain 14, so that a power source can be provided for rotation of the rear sprockets 15.

The chain 6 is fixed with a table top pull block 13, and the table top pull block 13 can be arranged at the joint of an upper table top part 19 and a lower table top part 19 of the laser cutting machine; the chain 6 is also fixed with a chain guide 11, the chain guide 11 being fixable to a laser cutter bed 18.

As shown in fig. 3, the chain tensioner operates on the following principle:

the chain 6 is mounted on the rear sprocket 15 and the sprocket 7, the table top pull blocks 13 on the chain 6 are mounted on the mounting positions of the chain 6 in the front and rear directions, respectively, and then the chain guide 11 is mounted on the chain 6 while the chain guide 11 is fixed on the laser cutter bed 18. The adjusting nut 2 on the double-headed screw 4 at the front side of the lathe bed is rotated clockwise, so that the adjusting nut 2 drives the chain wheel mounting seat 3 to move forwards, and tensioning of the chain 6 is realized. Placing the table top pull block 13 at the junction of the upper and lower table top members 19; providing a power source, exchanging the upper and lower table top parts 19; and the working condition of the tensioning structure is observed, the adjusting nut 2 is adjusted according to the tightness, and the normal work of the chain 6 is ensured.

The beneficial effects of the utility model are as follows:

1. the chain tensioning device provided by the utility model has a simple and reasonable structure, is convenient to manufacture and install, is convenient to disassemble and is convenient to maintain.

2. The chain tensioning device provided by the utility model has reasonable chain stress, and the tensioning structure is not easy to fail after long-time use.

3. The chain tensioning device provided by the utility model has the advantages of high structural stability and accurate and reliable transmission movement.

4. The chain tensioning device provided by the utility model has the advantages that the structure is more accurate in guiding, the chain is more stable in running, and the noise and abrasion of the chain and the chain wheel are reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a chain overspeed device tensioner, includes sprocket and sprocket mount pad, the sprocket set up in sprocket mount pad, its characterized in that still includes sprocket support, double-end screw rod and adjusting nut, the one end of double-end screw rod with sprocket support threaded connection, the other end of double-end screw rod with sprocket mount pad threaded connection, the axis of double-end screw rod with the plane parallel at sprocket place, adjusting nut cup joint in the sprocket mount pad is close to one side of sprocket support.

2. The chain tensioner as set forth in claim 1, wherein said sprocket is provided in a middle portion of said sprocket mounting seat, and said double-headed screw is provided in two and is located on upper and lower sides of said sprocket, respectively.

3. The chain tensioner as set forth in claim 2, further comprising a threaded plug having one end threadably secured to said sprocket support and the other end of said threaded plug passing through said sprocket mount; the axis of the thread plug is parallel to the axis of the double-headed screw rod, and the thread plug is arranged between the two double-headed screw rods.

4. A chain tensioner according to claim 3, wherein a guide hole is provided in the middle of the sprocket mounting base, two guide grooves are provided in the guide hole at intervals, guide rings are provided in the guide grooves, and the screw plugs pass through the guide grooves and the guide rings are sleeved on the screw plugs.

5. The chain tensioner as set forth in claim 1, wherein said sprocket is rotatably disposed to said sprocket mount by a deep groove ball bearing.

6. The chain tensioner as set forth in claim 5, wherein said deep groove ball bearing is secured to said sprocket mounting seat by a shaft circlip and said sprocket is secured to said deep groove ball bearing by a hole circlip.

7. A chain drive comprising the chain tensioner of any one of claims 1 to 6, further comprising a chain, a rear sprocket and a rear sprocket support, the rear sprocket rotatably disposed in the rear sprocket support, the chain disposed between the sprocket and the rear sprocket.

8. The chain transmission mechanism as set forth in claim 7, wherein said rear sprocket support is rotatably provided with an axle through a deep groove ball bearing, said rear sprockets are fixed to both ends of said axle, said chain being provided between one of said rear sprockets and said sprocket, and the other being provided with a power chain.

9. The chain drive of claim 7 wherein the chain is secured with a table top pull block mountable at the junction of the upper and lower table top members of the laser cutter.

10. The chain drive of claim 7 wherein the chain is further secured with a chain guide, the chain guide being securable to a laser cutter bed.