Groove type protective sleeve for axial outer end part of tooth-shaped chain

Abstract

A toothed chain axial outer end groove type protective sleeve comprises a protective sleeve body, the protective sleeve body is provided with pin holes matched with a toothed chain pin shaft, the pin holes axially penetrate through the protective sleeve body, the protective sleeve body is provided with two pin holes, and a protective groove is formed between each pin hole and the protective sleeve body. The two protection grooves are symmetrically arranged along the center line of the protection sleeve body in a mirroring mode, the protection grooves are horizontally arranged U-shaped grooves with outward openings, and the depth of the groove walls of the U-shaped grooves is between 10% and 90% of the thickness of the protection sleeve body. According to the toothed chain axial outer end groove type protective sleeve, the pin hole is connected with the toothed chain pin shaft, so that the protective sleeve is installed on the outer side face of a toothed chain and serves as a wear-resisting protective structure on the axial outer side of the toothed chain, and the two protective groove structures effectively reduce the overall weight of the protective sleeve and the manufacturing cost; and the protection groove structure facilitates dirt cleaning and prevents the problem of jamming.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chain drive technical field, especially relate to a sprocket chain axial outer end part groove type protective sleeve. BACKGROUND

[0002] Chain drive is one of the very common transmission conveying modes at present, and the sprocket chain transmission with high transmission precision is mostly used in the conveying process of high-temperature glass and other close special products, the sprocket chain is mostly formed by arranging sprocket chain pieces along the pin shaft in the axial direction, the outer end part of the transmission shaft is expanded in diameter by riveting to limit the axial movement space of the sprocket chain piece, and the expanded pin shaft end part of the riveting part is abraded or broken due to frequent collision with the guide plate during the actual long-time use, and the sprocket chain will be invalid after the riveting part is abraded or broken due to frequent collision. How to improve the service life of the pin shaft end part, that is, the service life of the sprocket chain is the object of research of the person skilled in the art.

[0003] The more reliable technical means at present is to add a protective sleeve to the outer end of the pin shaft to protect the expanded riveting part of the pin shaft, but such a protective sleeve is relatively bulky in structure, has high manufacturing cost, and has complex assembly process, and is prone to cause jamming problems caused by dirt accumulation. How to solve the above technical problems is the object of research of the person skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a sprocket chain axial outer end part groove type protective sleeve which is simple in structure, easy to install and low in manufacturing cost.

[0005] A sprocket chain axial outer end part groove type protective sleeve, comprising a protective sleeve body, the protective sleeve body is provided with a pin hole matched with a sprocket chain pin shaft, the pin hole axially penetrates the protective sleeve body, the protective sleeve body is provided with two pin holes, and a protective groove is arranged between each pin hole and the protective sleeve body, the two protective grooves are symmetrically and mirror-imaged arranged along the center line of the protective sleeve body, the protective groove is a U-shaped groove horizontally arranged with an opening outward, and the depth of the U-shaped groove wall is between 10-90% of the thickness of the protective sleeve body. While the protective sleeve body is used to protect the expanded riveting part of the sprocket chain pin shaft to prolong the service life of the sprocket chain, the horizontally arranged U-shaped groove structure with an opening outward effectively reduces the overall weight of the protective sleeve body, realizes the lightweight design of the sprocket chain as a whole, reduces the manufacturing cost, and avoids the jamming failure caused by dirt accumulation in the pin hole.

[0006] The protective sleeve body is divided into two structures, one is a double-peak protective sleeve, and the other is a horizontal protective sleeve. The double-peak protective sleeve comprises two protruding peaks, and a groove is arranged between the two protruding peaks. The double-peak protective sleeve has an external contour shape basically consistent with the shape of the sprocket chain, realizes the consistency of the sprocket chain as a whole, and improves the passing performance of the conveying of articles.

[0007] The horizontal protective sleeve comprises upper and lower horizontal planes which are parallel to each other, and the length of the lower horizontal plane is longer than that of the upper horizontal plane, so that the interference of the protective sleeve body with the conveying articles is reduced.

[0008] The pin hole cross section comprises a first circular arc segment, the first circular arc segment is connected with a second circular arc segment through a straight line segment, the circular arc radians of the first circular arc segment and the second circular arc segment are different, the pin shaft is facilitated to be clamped and is given appropriate rotation space, and clamping is further prevented.

[0009] The protective sleeve is installed on the outer side of the toothed chain by the pin hole connection toothed chain pin shaft, and serves as a wear-resistant protective structure on the outer side of the toothed chain shaft, the two protective groove structures not only effectively reduce the weight of the protective sleeve and the manufacturing cost, but also facilitate cleaning of dirt and prevent clamping. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model makes further explanation in connection with the drawings:

[0011] Figure 1 It is the three-dimensional structure schematic diagram of the utility model toothed chain shaft outer end groove type protective sleeve;

[0012] Figure 2 It is the main view structure schematic diagram of the utility model toothed chain shaft outer end groove type protective sleeve;

[0013] Figure 3 It is the rear view structure schematic diagram of the utility model toothed chain shaft outer end groove type protective sleeve;

[0014] Figure 4 It is the three-dimensional structure schematic diagram of the utility model horizontal protective sleeve. DETAILED DESCRIPTION

[0015] The utility model makes further explanation in connection with the drawings: Figures 1-4 The specific implementation manner makes further detailed explanation to the technical scheme of the patent.

[0016] A toothed chain shaft outer end groove type protective sleeve, comprising a protective sleeve body 4, the protective sleeve body 4 is provided with a pin hole 7 matched with a toothed chain pin shaft, the pin hole 7 axially penetrates the protective sleeve body 4, the protective sleeve body 4 is provided with two pin holes 7, and the two pin holes 7 are provided with protective grooves 8 between the protective sleeve body 4, the two protective grooves 8 are symmetrically and mirror-imaged along the protective sleeve body center line 10, the protective groove 8 is a U-shaped groove 6 with horizontally arranged opening outward, and the depth of the U-shaped groove wall 3 is between 10% and 90% of the thickness of the protective sleeve body.

[0017] The structure of the preferred protective sleeve body 4 is divided into two kinds, one is a double-peak protective sleeve, and the other is a horizontal protective sleeve 9. The double-peak protective sleeve includes two protruding peaks 1, and a groove 5 is arranged between the two protruding peaks 1. The outer contour shape of the double-peak protective sleeve is basically consistent with the shape of the toothed chain, realizing the overall consistency of the toothed chain and improving the passing performance of the article conveying.

[0018] The structure of the preferred horizontal protective sleeve 9 includes an upper horizontal plane 12 and a lower horizontal plane 11 which are parallel to each other. The length of the lower horizontal plane 11 is longer than that of the upper horizontal plane 12. By means of the two parallel planes, the interference problem of the protective sleeve body with the conveying articles is reduced.

[0019] In order to further improve the activity matching performance of the pin shaft in the future, the cross section of the pin hole 7 includes a first circular arc segment, a straight line segment connecting a second circular arc segment, and the circular arc radians of the first circular arc segment and the second circular arc segment are different.

[0020] The preferred embodiments of the present patent have been described in detail above, but the present patent is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present patent.

Claims

1. A sprocket chain axial outer end portion slotted boot comprising a boot body (4) characterised in that: The protective sleeve body (4) is provided with a pin hole (7) matched with the pin shaft of the toothed chain, the pin hole (7) axially penetrates the protective sleeve body (4), the protective sleeve body (4) is provided with two pin holes (7), each pin hole (7) is provided with a protection groove (8) between the protective sleeve body (4), the two protection grooves (8) are symmetrically and mirror-imaged arranged along the center line (10) of the protective sleeve body, the protection groove (8) is a U-shaped groove (6) horizontally arranged with an opening outward, the depth of the U-shaped groove wall (3) is between 10-90% of the thickness of the protective sleeve body.

2. A sprocket chain axial outer end portion slot protector according to claim 1, characterized in that: The protective sleeve body (4) is divided into two structures, one is a double-peak protective sleeve, and the other is a horizontal protective sleeve (9).

3. A sprocket chain axial outer end portion slotted boot according to claim 2, characterized in that: The double-peak protective sleeve includes two protruding peaks (1), and a groove (5) is arranged between the two protruding peaks (1).

4. A bushing for the axially outer end of a sprocket for a toothed chain as defined in claim 2, characterized in that: The horizontal protective sleeve (9) includes an upper horizontal plane (12) and a lower horizontal plane (11) which are parallel to each other, and the length of the lower horizontal plane (11) is longer than that of the upper horizontal plane (12).

5. A sprocket chain axial outer end portion slotted boot according to claim 1 characterized in that: The cross section of the pin hole (7) includes a first circular arc segment (20), the first circular arc segment (20) is connected with a second circular arc segment (22) through a straight line segment (21), and the circular arc radians of the first circular arc segment (20) and the second circular arc segment (22) are different.

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