Adjustable coupling

Abstract

The utility model discloses an adjustable coupler, which relates to the technical field of couplings, and comprises two connecting shafts, an adjusting component is arranged between the two connecting shafts, the adjusting component is respectively matched with the connecting shafts, a fixing component is arranged in each connecting shaft, and the fixing components are matched with the connecting shafts. During working, rotating shafts needing to be connected are inserted into the connecting shafts, the adjusting grooves are directly rotated, the adjusting rods are driven to be close to each other or far away from each other along with rotation of the adjusting grooves, then the distance between the adjusting rods is adjusted, and therefore the length of the coupler is adjusted according to the distance between the rotating shafts needing to be fixed. And after the position of the connecting shaft is adjusted, the rotating shafts are fixed through the fixing assemblies, connection of the rotating shafts is completed, compared with a traditional coupler, the length of the coupler can be adjusted according to different distances between the rotating shafts, and connection of the rotating shafts at different intervals is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coupling technical field, especially a kind of adjustable coupling. BACKGROUND

[0002] Coupling refers to the coupling of two shafts or shafts and rotating parts, rotating together in the process of transmitting motion and power, and is not disconnected under normal circumstances.A safety device is sometimes used to prevent the connected machine from bearing excessive load, and to protect overload.

[0003] However, the existing coupling has certain deficiencies:

[0004] First, the length of the existing coupling is usually fixed and cannot be adjusted, so when the distance between the shafts to be connected changes, the corresponding length of the coupling needs to be replaced and installed, so multiple sets of couplings of different specifications need to be prepared as backup;

[0005] Second, the size of the fixed shaft of the existing coupling is constant, and different specifications of the shaft need to select the corresponding coupling, so different specifications of the coupling need to be prepared for backup, which is inconvenient to use;

[0006] Finally, the existing coupling has the problem of large torsion during high-speed rotation, wear between the shaft and the coupling hole, and ultimately leads to the scrap of the entire part, which seriously affects the service life of the coupling. INVENTION CONTENTS

[0007] The purpose of the present application is to provide an adjustable coupling to solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an adjustable coupling, comprising a connecting shaft, the connecting shaft has two, two The adjusting assembly is arranged between the connecting shafts, the adjusting assembly is respectively matched with the connecting shaft, the connecting shaft is internally provided with a fixing assembly, the fixing assembly is matched with the connecting shaft, the adjusting assembly includes adjusting rod welded on the outer wall of the adjacent two sides of the connecting shaft, the adjusting rod outer wall is sleeved with adjusting groove, the adjusting groove inner wall is provided with equidistantly distributed internal thread, the adjusting rod outer wall is provided with equidistantly distributed external thread, and the adjusting groove and the adjusting rod are connected through thread rotation.

[0009] Preferably, the fixing assembly includes a threaded rod rotatably installed around the outer wall of the connecting shaft, a fixing block is rotatably installed at the end of the threaded rod, the fixing block is arc-shaped, the fixing block is matched with the connecting shaft, and the end of the threaded rod is provided with a rotating disc matched therewith.

[0010] Preferably, the fixed block is provided with a non-slip pad on the outer wall away from the threaded rod, the non-slip pad is matched with the fixed block, the non-slip pad is made of wear-resistant rubber material, and the thickness of the non-slip pad is less than the thickness of the fixed block.

[0011] Preferably, the fixed block is provided with a clamping groove on the outer wall away from the threaded rod, the length of the clamping groove is the same as the length of the fixed block, and the clamping groove is matched with the non-slip pad.

[0012] Preferably, the connecting shaft is provided with a protective sleeve on the inner wall, the protective sleeve is matched with the connecting shaft, the thickness of the protective sleeve is less than the thickness of the connecting shaft, and the protective sleeve is made of silica gel material.

[0013] Preferably, the adjusting groove is provided with a wear-resistant sleeve matched therewith on the inner wall, the inner wall of the wear-resistant sleeve is matched with the internal thread of the adjusting groove, the outer wall of the adjusting rod is provided with fixed holes distributed at equal distances, the fixed holes penetrate through the adjusting rod, fixed pins are threadedly installed at two ends of the outer wall of the adjusting groove, and the fixed pins are matched with the fixed holes.

[0014] In conclusion, the technical effects and advantages of the utility model are as follows:

[0015] 1、In the utility model, during work, the rotating shafts to be connected are inserted into the connecting shafts, the adjusting grooves are directly rotated, the adjusting rods are driven to move close to or away from each other along with the rotation of the adjusting grooves, the distance between the adjusting rods is adjusted, the length of the shaft coupling is adjusted according to the distance between the rotating shafts to be fixed, the rotating shafts of different lengths can be conveniently connected, after the position of the connecting shaft is adjusted, the rotating shafts are fixed through the fixing assembly, the connection of the rotating shafts is completed, compared with the traditional shaft coupling, the length of the shaft coupling can be adjusted according to the distance between the rotating shafts, the rotating shafts of different distances can be conveniently connected, the utility is stronger, the wear-resistant sleeve protects the adjusting groove and the adjusting rod, and wear of the external thread of the outer wall of the adjusting rod and the internal thread of the inner wall of the adjusting groove is prevented during continuous adjustment.

[0016] 2、After the length of the shaft coupling is adjusted, the threaded rod is rotated to drive the fixed blocks to move, the fixed blocks are used for extruding and fixing the rotating shafts, the rotating shafts of different specifications and sizes can be conveniently fixed, the non-slip pad increases friction, the fixing of the rotating shafts is more stable, and meanwhile, the rotating shafts are prevented from being worn during rotation.

[0017] 3、In the utility model, when the rotating shaft is fixed, the clamping block on the outer wall of the rotating shaft is aligned with the clamping groove on the fixed block, then the rotating shaft is inserted into the connecting shaft, at this time, the clamping groove and the clamping block are tightly connected to ensure that the rotating shaft does not rotate during rotation of the shaft coupling, the clamping groove can uniformly share the torsion generated by the rotation of the rotating shaft, the torsion is more uniformly distributed, and the fixed components inside the connecting shaft are not easily damaged. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0019] Figure 1 The main body appearance structure in the embodiments of the present application is shown in the figure.

[0020] Figure 2 The fixed pin structure in the embodiments of the present application is shown in the figure.

[0021] Figure 3 The adjusting state structure of the adjusting assembly in the embodiments of the present application is shown in the figure.

[0022] Figure 4 The adjusting assembly structure in the embodiments of the present application is shown in the figure.

[0023] Figure 5 The fixed assembly structure in the embodiments of the present application is shown in the figure.

[0024] In the figure: 1, connecting shaft; 2, adjusting rod; 3, adjusting groove; 4, threaded rod; 5, fixed block; 6, non-slip pad; 7, clamping groove; 8, rotating disc; 9, protective sleeve; 10, wear-resistant sleeve; 11, fixed hole; 12, fixed pin. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments only represent some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0026] Embodiment: refer to Figures 1-5The adjustable coupling shown comprises a connecting shaft 1, the connecting shaft 1 has two, and an adjusting assembly is arranged between the two connecting shafts 1, the adjusting assembly is respectively matched with the connecting shaft 1, and a fixing assembly is arranged in the connecting shaft 1, the fixing assembly is matched with the connecting shaft 1, the adjusting assembly comprises an adjusting rod 2 welded to the outer walls of the adjacent two sides of the connecting shaft 1, the adjusting rod 2 is sleeved with an adjusting groove 3, the inner wall of the adjusting groove 3 is provided with equidistantly distributed internal threads, the outer wall of the adjusting rod 2 is provided with equidistantly distributed external threads, the adjusting groove 3 and the adjusting rod 2 are connected through threads, the inner wall of the adjusting groove 3 is provided with a wear-resistant sleeve 10 matched therewith, the inner wall of the wear-resistant sleeve 10 is matched with the internal threads of the inner wall of the adjusting groove 3, and equidistantly distributed fixing holes 11 are formed in the outer wall of the adjusting rod 2, the fixing holes 11 penetrate through the adjusting rod 2, and the fixing pins 12 are threadedly installed at both ends of the outer wall of the adjusting groove 3, and the fixing pins 12 are matched with the fixing holes 11.

[0027] Through the above structure: when working, the rotating shafts to be connected are inserted into the connecting shaft 1, the adjusting groove 3 is directly rotated, the adjusting rods 2 are driven to move close to or away from each other with the rotation of the adjusting groove 3, and then the distance between the adjusting rods 2 is adjusted, so that the length of the coupling is adjusted according to the distance between the rotating shafts to be fixed, and the rotating shafts of different lengths are connected, after the position of the connecting shaft 1 is adjusted, the rotating shafts are fixed through the fixing assembly, the connection of the rotating shafts is completed, compared with the traditional coupling, the length of the coupling can be adjusted according to the distance between the rotating shafts, the rotating shafts of different distances can be connected, the practicability is stronger, the wear-resistant sleeve 10 protects the adjusting groove 3 and the adjusting rod 2, and prevents the external threads of the outer wall of the adjusting rod 2 and the internal threads of the inner wall of the adjusting groove 3 from being worn in the process of continuous adjustment.

[0028] As shown in Figure 5 The fixing assembly comprises a threaded rod 4 rotatably installed around the outer wall of the connecting shaft 1, a fixed block 5 is rotatably installed at the end of the threaded rod 4, the fixed block 5 is arc-shaped, the fixed block 5 is matched with the connecting shaft 1, a rotating disc 8 matched with the threaded rod 4 is arranged at the end of the threaded rod 4, anti-skid pads 6 matched with the fixed block 5 are arranged on the outer wall of the side of the fixed block 5 away from the threaded rod 4, the anti-skid pads 6 are made of wear-resistant rubber material, the thickness of the anti-skid pads 6 is less than the thickness of the fixed block 5, after the length of the coupling is adjusted, the threaded rod 4 is rotated to drive the fixed block 5 to move, so that the fixed block 5 extrudes and fixes the rotating shaft, the rotating shafts of different specifications and sizes are fixed, the anti-skid pads 6 increase friction, the rotating shaft is fixed more stably, and the rotating shaft is prevented from being worn in the process of rotation.

[0029] As shown in Figure 5As shown, the fixing block 5 is provided with a clamping groove 7 on the outer wall away from the threaded rod 4, the length of the clamping groove 7 is the same as the length of the fixing block 5, the clamping groove 7 is matched with the non-slip pad 6, the inner wall of the connecting shaft 1 is provided with a protective sleeve 9, the protective sleeve 9 is matched with the connecting shaft 1, the thickness of the protective sleeve 9 is less than the thickness of the connecting shaft 1, the protective sleeve 9 is made of silica gel, when the rotating shaft is fixed, the clamping block on the outer wall of the rotating shaft is aligned with the clamping groove 7 on the fixing block 5, then the rotating shaft is inserted into the connecting shaft 1, at this time, the clamping groove 7 is tightly connected with the clamping block to ensure that the rotating shaft does not rotate when the coupling rotates, and the clamping groove 7 can evenly distribute the torque generated by the rotating of the rotating shaft, the torque distribution is more uniform, and the fixed components inside the connecting shaft 1 are not easy to be damaged.

[0030] The utility model discloses a working principle:

[0031] When working, the rotating shafts to be connected are inserted into the connecting shaft 1, the adjusting groove 3 is directly rotated, the adjusting rods 2 are driven to move closer to or away from each other with the rotation of the adjusting groove 3, and then the distance between the adjusting rods 2 is adjusted, so that the length of the coupling is adjusted according to the distance between the rotating shafts to be fixed, the rotating shafts of different lengths are connected, after the position of the connecting shaft 1 is adjusted, the rotating shafts are fixed by the fixing assembly, the connection of the rotating shafts is completed, compared with the traditional coupling, the length of the coupling can be adjusted according to the distance between the rotating shafts, the rotating shafts of different distances can be connected, the utility is stronger, the anti-abrasion sleeve 10 protects the adjusting groove 3 and the adjusting rod 2, and prevents the external threads on the outer wall of the adjusting rod 2 and the internal threads in the inner wall of the adjusting groove 3 from being abraded during continuous adjustment.

[0032] After the length of the coupling is adjusted, the threaded rod 4 is rotated to drive the fixing block 5 to move, so that the fixing block 5 extrudes and fixes the rotating shaft, the rotating shafts of different specifications and sizes are fixed, the non-slip pad 6 increases friction, the rotating shaft is fixed more stably, and the rotating shaft is prevented from being abraded during rotation.

[0033] When the rotating shaft is fixed, the clamping block on the outer wall of the rotating shaft is aligned with the clamping groove 7 on the fixing block 5, then the rotating shaft is inserted into the connecting shaft 1, at this time, the clamping groove 7 is tightly connected with the clamping block to ensure that the rotating shaft does not rotate when the coupling rotates, and the clamping groove 7 can evenly distribute the torque generated by the rotating of the rotating shaft, the torque distribution is more uniform, and the fixed components inside the connecting shaft 1 are not easy to be damaged.

[0034] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An adjustable coupling comprising a connecting shaft (1), characterized in that: The connecting shaft (1) has two, two connecting shafts (1) are provided with adjusting assembly, adjusting assembly is respectively matched with connecting shaft (1), the inside of connecting shaft (1) is provided with fixed assembly, the fixed assembly is matched with connecting shaft (1), the adjusting assembly includes the adjusting rod (2) welded to the outer wall of adjacent two sides of connecting shaft (1), the adjusting groove (3) is sleeved on the outer wall of adjusting rod (2), the inner thread of equal distance is arranged on the inner wall of adjusting groove (3), the outer thread of equal distance is arranged on the outer wall of adjusting rod (2), and adjusting groove (3) is connected with adjusting rod (2) by thread rotation.

2. An adjustable coupling according to claim 1, wherein: The fixed assembly includes the threaded rod (4) rotationally installed on the outer wall of connecting shaft (1) four around, the fixed block (5) is rotationally installed at the end of threaded rod (4), the fixed block (5) is arc-shaped, the fixed block (5) is matched with connecting shaft (1), and the rotating disc (8) matched with threaded rod (4) is arranged at the end of threaded rod (4).

3. An adjustable coupling as claimed in claim 2, wherein: The outer wall of the side, away from the threaded rod (4), of the fixed block (5) is provided with the anti-skid pad (6), the anti-skid pad (6) is matched with the fixed block (5), the anti-skid pad (6) is wear-resistant rubber material, and the thickness of the anti-skid pad (6) is less than the thickness of the fixed block (5).

4. An adjustable coupling as claimed in claim 3, wherein: The outer wall of the side, away from the threaded rod (4), of the fixed block (5) is provided with the anti-skid pad (6), the anti-skid pad (6) is matched with the fixed block (5), the anti-skid pad (6) is wear-resistant rubber material, and the thickness of the anti-skid pad (6) is less than the thickness of the fixed block (5).

5. An adjustable coupling as defined in claim 1 wherein: The inner wall of the connecting shaft (1) is provided with the protective sleeve (9), the protective sleeve (9) is matched with the connecting shaft (1), the thickness of the protective sleeve (9) is less than the thickness of the connecting shaft (1), and the protective sleeve (9) is silica gel material.

6. An adjustable coupling as defined in claim 1 wherein: The inner wall of the adjusting groove (3) is provided with the wear-resistant sleeve (10) matched with it, the inner thread of the inner wall of the wear-resistant sleeve (10) is matched with the inner wall of the adjusting groove (3), the outer wall of the adjusting rod (2) is provided with the fixed hole (11) of equal distance distribution, the fixed hole (11) penetrates the adjusting rod (2), and the fixed pin (12) is threadedly installed at both ends of the outer wall of the adjusting groove (3), the fixed pin (12) is matched with the fixed hole (11).

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