Driven wheel device of anti-jumping chain

Abstract

The utility model discloses a driven wheel device of an anti-jumping chain, which comprises a shovel plate mechanism, two multilateral driven wheels are arranged on the shovel plate mechanism, the multilateral driven wheels are arranged at two ends of a middle shaft through inner fixing holes, the multilateral driven wheels are connected with conveying chains, and a scraping plate is arranged between the two conveying chains. The multilateral driven wheel is provided with a chain blocking edge, a chain blocking outer ring, an inner groove bottom and a chain clamping groove. The driven wheel device is different from a conventional round driven wheel device, the blocking area of the longitudinal side face of the conveying chain is increased through the chain blocking edges, the conveying chain is prevented from jumping out of the chain clamping grooves due to lateral force, and equipment failures and even accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the field of tunneling machines, in particular to a driven wheel device for preventing chain jumping. Background Art

[0002] At present, the driven wheel of the scraper chain in mechanical equipment with scrapers such as tunnel boring machines has a circular structure, which has limited restraining effect on the chain. When the scraper is subjected to asymmetric external force, the chain often jumps out and shifts, causing the scraper conveying device to twist and fold, resulting in failure or even accidents.

[0003] Therefore, it is necessary to develop a driven wheel device to prevent chain jumping in a targeted manner to avoid malfunctions or even accidents. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a driven wheel device for preventing chain jumping. Different from the conventional circular driven wheel device, the utility model increases the blocking area of ​​the longitudinal side of the conveying chain by the chain blocking edge, thereby preventing the conveying chain from jumping out of the chain slot due to lateral force, thereby avoiding equipment failure or even accidents.

[0005] Technical solution: The utility model is a driven wheel device for preventing chain jumping, which is characterized by: including a shovel mechanism, on which are provided two polygonal driven wheels, which are installed at both ends of the central axis through internal fixing holes, and the polygonal driven wheels are connected to the conveying chains, and a scraper is provided between the two conveying chains, and the polygonal driven wheels are provided with a chain blocking edge, a chain blocking outer ring, an inner groove bottom and a chain clamping groove.

[0006] Wherein, the polygonal driven wheel rotates around the central axis through the bearing.

[0007] Wherein, the polygonal driven wheel is connected to the driving wheel through a conveying chain.

[0008] Wherein, the chain buckle of the conveying chain is clamped in the chain clamping groove of the multilateral driven wheel.

[0009] Wherein, the shovel mechanism is provided with a chute, and the scraper is located in the chute.

[0010] The chain blocking edge has a pointed shape and extends into the buckle of the conveyor chain.

[0011] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: Different from conventional circular driven wheel devices, the utility model increases the blocking area of ​​the longitudinal side of the conveying chain through the chain blocking edge, preventing the conveying chain from jumping out of the chain slot due to lateral force, thus avoiding equipment failure or even accidents. The utility model has a simple structure and effectively reduces the chain jumping rate; it can make the driven wheel rotate with the chain, avoiding relative sliding and reducing the wear of the chain and the driven wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the assembly structure of the utility model;

[0014] Figure 3 It is a schematic side view of the structure of the multilateral driven wheel of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the multilateral driven wheel of the utility model;

[0016] In the figure, 1 is a multilateral driven wheel; 2 is a conveying chain; 3 is a scraper; 4 is a shovel mechanism; 5 is a central axis; 11 is a chain blocking edge; 12 is a chain blocking outer ring; 13 is an inner groove bottom; 14 is a chain clamping groove; and 15 is an inner fixing hole. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0018] The utility model of the driven wheel device for preventing chain jumping comprises a shovel mechanism 4, on which two polygonal driven wheels 1 are arranged, and the polygonal driven wheels 1 are installed at both ends of the central axis 5 through internal fixing holes 15, and the polygonal driven wheels 1 are connected to the conveying chain 2, and a scraper 3 is arranged between the two conveying chains 2, and the polygonal driven wheels 1 are provided with a chain blocking edge 11, a chain blocking outer ring 12, an inner groove bottom 13 and a chain clamping groove 14. Among them, the polygonal driven wheel 1 rotates around the central axis 5 through a bearing. The polygonal driven wheel 1 is connected to the driving wheel through the conveying chain 2. The chain buckle of the conveying chain 2 is clamped in the chain clamping groove 14 of the polygonal driven wheel 1, and when the driving wheel drives the chain scraper 3 to rotate, the polygonal driven wheel 1 can rotate synchronously therewith. The shovel mechanism 4 is provided with a chute, and the scraper 3 is located in the chute. The outer shape of the chain blocking edge 11 is a sharp angle shape, which extends into the buckle of the conveying chain 2.

[0019] The middle axis 5 enables the length of the chain slot 14 of the polygonal driven wheel 1 to coincide with the center position of the conveying chain 2. The polygonal driven wheel 1 has a pentagonal shape or other shapes. The chain length of the conveying chain 2 and the shape of the polygonal driven wheel 1 can fit together during rotation. The size of the chain slot 14 is not less than the chain thickness of the conveying chain 2.

[0020] When in use, when the multilateral driven wheel 1 rotates with the conveyor chain 2, the outer ring 12 of the retaining ring can fit with the horizontal chain buckle of the conveyor chain 2, and the adjacent vertical chain buckle can just extend into the chain clamping groove 14. At the same time, the chain retaining edge 11 can effectively limit the left and right movement of the chain buckle, thereby preventing the conveyor chain 2 from jumping out of the chain clamping groove 14 when the device is working.

[0021] The utility model is different from the conventional circular driven wheel device. The chain blocking edge increases the blocking area of ​​the longitudinal side of the conveying chain, preventing the conveying chain from jumping out of the chain slot due to lateral force, thereby avoiding equipment failure or even accidents. The utility model has a simple structure and effectively reduces the chain jumping rate; it can make the driven wheel rotate with the chain, avoid relative sliding, and reduce the wear of the chain and the driven wheel.

Claims

1. A driven wheel device for preventing chain jumping, characterized in that: The invention comprises a scraping plate mechanism (4), wherein two polygonal driven wheels (1) are arranged on the scraping plate mechanism (4), the polygonal driven wheels (1) are mounted on the two ends of a central shaft (5) through internal fixing holes (15), the polygonal driven wheels (1) are connected to conveying chains (2), a scraper (3) is arranged between the two conveying chains (2), and the polygonal driven wheels (1) are provided with a chain blocking edge (11), a chain blocking outer ring (12), an inner groove bottom (13) and a chain clamping groove (14).

2. The driven wheel device of the anti-jump chain according to claim 1, characterized in that: The polygonal driven wheel (1) rotates around the central axis (5) via a bearing.

3. The driven wheel device of the anti-jump chain according to claim 1, characterized in that: The polygonal driven wheel (1) is connected to the driving wheel via a conveying chain (2).

4. The driven wheel device for preventing chain jumping according to claim 1, characterized in that: The chain buckle of the conveying chain (2) is clamped in the chain clamping groove (14) of the multilateral driven wheel (1).

5. The driven wheel device for preventing chain jumping according to claim 1, characterized in that: The shovel mechanism (4) is provided with a chute, and the scraper (3) is located in the chute.

6. The driven wheel device for preventing chain jumping according to claim 1, characterized in that: The chain blocking edge (11) has a pointed shape and extends into the buckle of the conveying chain (2).

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