Combined chain wheel

Abstract

The utility model discloses a combined chain wheel which comprises a connecting plate and a positioning cylinder arranged on one side of the connecting plate, a chain wheel body is sleeved on the positioning cylinder, an extension cylinder is arranged on the chain wheel body, the extension cylinder and the chain wheel are concentrically arranged, a bolt is screwed on the extension cylinder, and a plurality of groups of positioning holes are formed in the positioning cylinder along the length direction of the positioning cylinder. A sealing cover is arranged at the front end of the extension cylinder, the outer wall of the insertion rod is sleeved with a ratchet wheel, a pawl matched with the ratchet wheel is arranged on the inner wall of the sealing cover, a containing groove is formed in the inner wall of the extension cylinder in the radial direction of the extension cylinder, and an insertion block matched with the containing groove in an inserted mode is arranged on the outer wall of the sealing cover; in the prior art, a chain wheel is limited on a threaded rod in a nut mode, in the using process, the nut is prone to loosening due to external vibration, so that the chain wheel deviates on the threaded rod, and overall use is affected, and the stability of the chain wheel in the using process can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain wheel technical field, especially in combination formula chain wheel. BACKGROUND

[0002] Chain wheel is the wheel with embedded tooth type buckle chain tooth, is used for with pitch accurate block on pitch chain ring or cable mesh or solid or with spoke gear wheel, with (roller) chain engagement to transmit motion, is widely used in chemical industry, textile machinery, food processing, instrument and apparatus, petroleum and other industries mechanical transmission etc.

[0003] The utility model discloses a prevent falling combination formula chain wheel discloses the prior art file CN215334289U, including prevent falling chain wheel, first chain wheel and threaded rod, the periphery movable mounting of threaded rod one side has prevent falling chain wheel, the one side movable mounting of connecting rod has connecting plate, the surface fixed mounting of connecting plate other side has limit block, the periphery movable mounting of threaded rod other side of first chain wheel has second chain wheel, the periphery movable mounting of threaded rod other side of second chain wheel has third chain wheel, the periphery movable mounting of threaded rod one side of second chain wheel and third chain wheel all has first nut, the inside of first chain wheel and second chain wheel and third chain wheel all is provided with oil guide groove, this utility model is provided with a series of structures and makes this device in the process of using can realize the automatic reset to chain simultaneously under the condition of preventing chain from falling, it is convenient for use personnel to adjust the interval between first chain wheel and second chain wheel and third chain wheel according to the size of chain, it is convenient for the installation and dismounting of device, but the way of nut is simply used to limit chain wheel on threaded rod, in the process of using, there is the nut that can easily cause loosening due to external vibration, thereby make chain wheel cause deviation on threaded rod, influence the use of whole. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a combination formula chain wheel, can improve the stability of chain wheel when using.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a combination formula chain wheel, including connecting plate and the positioning cylinder arranged at one side thereof, a chain wheel body is sleeved on the positioning cylinder, an extension cylinder is arranged on the chain wheel body, the extension cylinder is concentrically arranged with the chain wheel, a bolt is screwed on the extension cylinder, a plurality of groups of positioning holes are formed in the length direction of the positioning cylinder, a plug rod that is matched with the positioning holes is arranged at the bottom end of the bolt, a cover is arranged at the front end of the extension cylinder, a ratchet wheel is sleeved on the outer wall of the plug rod, and a pawl matched with the ratchet wheel is arranged on the inner wall of the cover.

[0006] Preferably, a containing groove is formed in the inner wall of the extension cylinder along the radial direction, and a plug block matched with the containing groove is arranged on the outer wall of the cover.

[0007] As preferred, one end of the plug block is connected with the cover through the telescopic spring.

[0008] As preferred, the side of the plug block away from the cover is arranged in an inclined manner, and a driving block is arranged in the accommodating groove in a sliding manner, one end of the driving block is connected with the side of the plug block away from the cover in a sliding manner, and the other end of the driving block penetrates out of the inside of the accommodating groove.

[0009] As preferred, the outer wall of the cover is provided with a placing groove.

[0010] As preferred, the inner wall of the placing groove is provided with a friction pad.

[0011] The sprocket body is stably supported on the positioning cylinder, and the stability of the sprocket body installed on the positioning cylinder is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic view for showing part of structures on the connecting plate in an embodiment of the present application;

[0013] Figure 2 It is a schematic view for showing part of structures on the positioning cylinder in an embodiment of the present application;

[0014] Figure 3 It is a schematic view for showing part of structures on the positioning cylinder in an embodiment of the present application; Figure 2 It is an enlarged view of part A in the figure;

[0015] Figure 4 It is a schematic view for showing part of structures on the positioning cylinder in an embodiment of the present application;

[0016] Reference signs: 1, connecting plate; 2, positioning cylinder; 3, sprocket body; 4, extension cylinder; 5, bolt; 6, positioning hole; 7, plug rod; 8, cover; 9, ratchet wheel; 10, pawl; 11, accommodating groove; 12, plug block; 13, telescopic spring; 14, driving block; 15, placing groove; 16, friction pad. DETAILED DESCRIPTION

[0017] The following described only the preferred embodiments of the present application, the scope of protection is not limited to the examples, for all the technical solutions under the idea of the present application should belong to the protection scope of the present application, at the same time, it should be pointed out that, for the ordinary skilled in the art, without departing from the principles of the present application under the premise of a number of improvements and embellishments, these improvements and embellishments should also be considered as the protection scope of the present application.

[0018] It should be noted that in this paper, such as first and second, such as "connecting plate one, connecting plate two" and other relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

[0019] In the present embodiment, the orientation words mentioned, such as "up, down, left, right" and so on, are only used to cooperate with the drawings to enable the skilled in the art to understand the relationship between the various features or parts.

[0020] In the present embodiment, unless otherwise expressly provided and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise expressly limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the present application by the person skilled in the art according to the specific circumstances.

[0021] As shown in Figures 1 to 4 A combined sprocket, comprising a connecting plate 1 and a positioning cylinder 2 provided on the front side thereof, a plurality of groups of sprocket bodies 3 are sleeved on the positioning cylinder 2 along the length direction thereof, in the present embodiment, the diameters of the sprocket bodies 3 on the positioning cylinder 2 are set according to the actual application, a extension cylinder 4 is provided on the front side of the sprocket body 3 and is concentric with the sprocket body 3, a bolt 5 is screwed on the extension cylinder 4, a plurality of groups of positioning holes 6 are formed on the positioning cylinder 2 along the length direction thereof, the bottom end of the bolt 5 is provided with a plug rod 7 which is inserted into the positioning hole 6, a ratchet wheel 9 is sleeved on the outer wall of the plug rod 7, the depth of the positioning hole 6 is smaller than the length of the plug rod 7, when the plug rod 7 is inserted into the positioning hole 6, the ratchet wheel 9 is located outside the positioning hole 6, a rectangular accommodating groove 11 is formed on the inner wall of the front end of the extension cylinder 4, a cover 8 is provided on the front end of the extension cylinder 4, the cross section of the cover 8 is T-shaped, a hole is formed in the middle of the cover 8 for the positioning cylinder 2 to pass through, the outer diameter of the rear end of the cover 8 is smaller than the inner diameter of the extension cylinder 4, a plug block 12 which is inserted into the accommodating groove 11 is slidably arranged on the radial direction of the outer wall of the rear end of the cover 8, the plug block 12 is connected with the cover 8 through an extension spring 13 on the lower side, as shown in Figures 2 to 3As shown, the upper side of the plug block 12 is inclined downward from left to right, and the upper side of the plug block 12 horizontally slides an L-shaped driving block 14, the right end of the driving block 14 penetrates the accommodating groove 11, the front end outer wall of the cover 8 is provided with a placing groove 15, the right end of the driving block 14 is located in the placing groove 15, and the inner wall bottom side of the placing groove 15 is provided with a friction pad 16, which is used to increase the friction between the driving block 14 and the placing groove 15, and the inner wall of the cover 8 is provided with a ratchet pawl 10 matched with the ratchet wheel 9.

[0022] When the personnel installs the sprocket body 3 on the positioning cylinder 2, first, the sprocket body 3 is sleeved on the outer wall of the positioning cylinder 2, so that the bolt 5 on the extension cylinder 4 is aligned with the positioning hole 6 on the positioning cylinder 2, then the bolt 5 is rotated in the forward direction, so that the plug rod 7 is inserted into the positioning hole 6 below, and then the cover 8 is sleeved on the positioning cylinder 2, the rear end of the cover 8 extends into the inside of the extension cylinder 4, the extension spring 13 below the plug block 12 is compressed, when the rear end of the cover 8 moves a certain distance, the plug block 12 is located directly below the accommodating groove 11, the extension spring 13 starts to reset and pushes the plug block 12 to extend into the accommodating groove 11, the upper side of the plug block 12 pushes the driving block 14, the right end of the driving block 14 slides into the placing groove 15, and the ratchet pawl 10 is also driven by the cover 8 to cooperate with the ratchet wheel 9 on the outer wall of the plug rod 7 to make the bolt 5 rotate in one direction and be locked, when the positioning cylinder 2 is shaken by external force, the screw connection between the bolt 5 and the extension cylinder 4 starts to move, because of the cooperation of the ratchet wheel 9 and the ratchet pawl 10, the bolt 5 cannot be driven to rotate in the reverse direction, and because the extension spring 13 limits the connection between the cover 8 and the extension cylinder 4, the connection between the cover 8 and the extension cylinder 4 is not easy to be shaken off, which ensures the stability of the position of the sprocket body 3 on the positioning cylinder 2.

[0023] The above embodiments are used to illustrate the present application, but not to limit the present application, and any simple transformation of the present application also belongs to the protection scope of the present application.

Claims

1. A combined chain wheel, comprising a connecting plate (1) and a positioning cylinder (2) arranged on one side of the connecting plate (1), a chain wheel body (3) being sleeved on the positioning cylinder (2), characterized in that An extension cylinder (4) is arranged on the chain wheel body (3) and is concentric with the chain wheel, and a bolt (5) is screwed on the extension cylinder (4); A plurality of groups of positioning holes (6) are formed in the positioning cylinder (2) along the length direction of the positioning cylinder (2), and the bottom end of the bolt (5) is provided with a plug rod (7) which is inserted into the positioning holes (6) in a plug-in manner; An end cover (8) is arranged at the front end of the extension cylinder (4), a ratchet wheel (9) is sleeved on the outer wall of the plug rod (7), and a pawl (10) is arranged on the inner wall of the end cover (8) and matched with the ratchet wheel (9).

2. A modular sprocket as claimed in claim 1, wherein An accommodating groove (11) is formed in the inner wall of the extension cylinder (4) along the radial direction, and an insertion block (12) is arranged on the outer wall of the end cover (8) and matched with the accommodating groove (11) in a plug-in manner.

3. A modular sprocket as claimed in claim 2, wherein One end of the insertion block (12) is connected with the end cover (8) through a telescopic spring (13).

4. The modular sprocket of claim 2, wherein, The side of the insertion block (12) away from the end cover (8) is arranged in an inclined manner, a driving block (14) is slidably arranged in the accommodating groove (11), one end of the driving block (14) is slidably connected with the side of the insertion block (12) away from the end cover (8), and the other end of the driving block (14) penetrates out of the inside of the accommodating groove (11).

5. A modular sprocket as claimed in claim 4, wherein A placing groove (15) is formed in the outer wall of the end cover (8).

6. A modular sprocket as defined in claim 5, wherein, A friction pad (16) is arranged on the inner wall of the placing groove (15).

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