Scraper machine capable of adjusting tension degree of scraper chain

Abstract

The utility model belongs to the technical field of coke discharging systems, and particularly discloses a scraper conveyor capable of adjusting the tension degree of a scraper chain, which comprises a scraper conveyor body and a tensioning mechanism, the tensioning mechanism comprises two concentric-square-shaped supporting frames, the concentric-square-shaped supporting frames are fixedly connected with the outer walls of the two sides of the scraper conveyor body, a screw rod rotatably penetrates through the concentric-square-shaped supporting frames, and the screw rod is connected with the scraper conveyor body. A screw is arranged on the scraper body, a nut is in threaded connection with the screw, the bottom of the nut abuts against the top of the concentric-square-shaped supporting frame, a connector is arranged at the end, located in the concentric-square-shaped supporting frame, of the screw, a drag chain plate is fixedly connected between the two connectors, sliding grooves are formed in the two sides of the scraper body, the drag chain plate is in sliding connection with the sliding grooves, and the drag chain plate is located in the scraper body. By arranging the screw rod, the drag chain plate and the nut, the length of the screw rod is adjusted by rotating the nut, and the tensioning degree of the tensioning device on the scraper is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper machines, in particular to a scraper machine with adjustable tension of a scraper chain. Background Art

[0002] A scraper is a conveying machine that uses a body connected by multiple sections of detachable chutes as a carrier, and uses scrapers on a traction chain to push bulk materials. It can be used to transport various powdered, small granular or blocky bulk materials with good fluidity, such as coal, ore, sand, coke, cement, fertilizer, grain, etc. The scraper is an important transportation machine in coal mining. It is mainly used for transportation along the coal mining face and mining area. It can also be used in coal tunnels and semi-coal rock tunnels. It can transport upwards or downwards. The transportation capacity of the scraper is not affected by the size and humidity of the cargo. It has the advantages of a small body height, easy loading, and convenient adjustment of the body length. Therefore, it is widely used in most coal mines.

[0003] At present, the scraper is mainly composed of transmission device, scraper chain, chute, push device, coal baffle and coal shovel. Among them, the transmission device is mainly composed of motor, reducer, sprocket, head frame and other components. The working principle of the scraper is to fix the scraper on the chain (composing the scraper chain). When the head transmission part is started, the sprocket on the head shaft is driven to rotate, so that the scraper chain circulates and drives the material to move along the chute.

[0004] However, during the long-term operation of the scraper conveyor, the horseshoe ring connecting the chain and the scraper is severely worn, causing the chain to lengthen and the tail tensioning device to malfunction, making it impossible to adjust the chain. Therefore, the chain needs to be cut off, resulting in long maintenance time and low production efficiency. Utility Model Content

[0005] The utility model aims to provide a scraper machine with adjustable scraper chain tension, so as to solve the problem that during the long-term operation of the existing scraper machine, the horseshoe ring connecting the chain and the scraper wears, so that the chain is extended and the chain cannot be adjusted, resulting in long maintenance time and low production efficiency.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: a scraper machine with adjustable scraper chain tension, including a scraper machine body and a tensioning mechanism, the tensioning mechanism including two arched support frames, each of the arched support frames is fixedly connected to the outer walls on both sides of the scraper machine body, each of the arched support frames is rotatably penetrated by a screw, a nut is threadedly connected to the screw, the bottom of the nut abuts against the top of the arched support frame, and each of the screws is provided with a connecting head at one end located in the arched support frame, the connecting head is slidably connected to the arched support frame, a drag chain plate is fixedly connected between the two connecting heads, sliding grooves are opened on both sides of the scraper machine body, the drag chain plate is slidably connected to the sliding grooves, and the drag chain plate is located in the scraper machine body.

[0007] The working principle of the utility model is as follows: when it is necessary to tighten the chain, first the staff uses a wrench to rotate the two nuts at the same time. At this time, the nuts rotate in situ, and the screw moves upward. As the screw moves upward, the connecting head also moves upward. As the connecting head moves upward, the drag chain plate also moves upward to resist the chain and moves the chain upward, and the tension of the chain is observed. After the chain tension is appropriate, the nuts are stopped from being rotated to complete the tightening of the chain; when it is not necessary to tighten the chain, first the staff uses a wrench to rotate the two nuts in opposite directions at the same time. At this time, the nuts rotate in situ, and the screw moves downward. As the screw moves downward, the connecting head also moves downward. As the connecting head moves downward, the drag chain plate also moves downward to gradually loosen the chain. When the drag chain plate is no longer in contact with the chain, the nuts are stopped from being rotated.

[0008] The beneficial effect of the utility model is that by setting a screw rod, a drag chain plate and a nut, the nut is rotated to adjust the length of the screw rod, so as to adjust the tensioning degree of the tensioning device on the scraper machine. The operation is simple and convenient, and the fixed connection of the two circular support frames and the setting of the screw rod can provide sufficient support and stability to ensure that the scraper machine will not shake or shift during operation.

[0009] Option 2, which is a preferred option of the basic option, is that a limit plate is provided on the inner wall of the circular support frame, and a groove is provided on the outer wall of the connecting head, and the limit plate is slidably connected to the groove; a limit plate and a groove are provided on the circular support frame and the connecting head to facilitate limiting the left and right shaking of the two connecting heads.

[0010] Option three, which is a preferred option of the basic option, is a handle provided on the nut; a handle is provided on the nut to facilitate the rotation of the nut.

[0011] Option 4, which is a preferred option of the basic option, is that an upper cover is detachably connected to the scraper body; the upper cover is provided on the scraper body to prevent dust from being generated when the scraper body is in operation.

[0012] Option 5 is a preferred option of Option 4, in which one side of the upper cover is a transparent plate; one side of the upper cover is set as a transparent plate to facilitate observation of the conditions inside the scraper body.

[0013] Option six, which is the preferred option of the basic option, the material of the drag chain plate is high manganese steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of a scraper machine with adjustable scraper chain tension connected to an upper cover of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of a scraper machine with adjustable tension of the scraper chain of the utility model;

[0016] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 It is a top view of a scraper machine with adjustable scraper chain tension in the utility model;

[0018] Figure 5 The utility model discloses an exploded view of a scraper machine with adjustable tension of a scraper chain. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below through specific implementation methods:

[0020] The figure marks in the drawings of the specification include: 1. scraper body; 2. tensioning mechanism; 201. circular support frame; 202. screw; 203. nut; 204. connector; 205. drag chain plate; 206. limit plate; 207. groove; 208. handle; 3. upper cover; 301. transparent plate.

[0021] like Figures 1 to 5As shown: a scraper with adjustable tension of the scraper chain, comprising a scraper body 1 and a tensioning mechanism 2, the tensioning mechanism 2 comprising two circular support frames 201, each circular support frame 201 is fixedly connected to the outer walls of both sides of the scraper body 1, a screw rod 202 is rotatably passed through each circular support frame 201, a nut 203 is threadedly connected to the screw rod 202, the bottom of the nut 203 abuts against the top of the circular support frame 201, a handle 208 is fixedly connected to the nut 203, and one end of each screw 202 located in the circular support frame 201 is provided with a connector 204, the connector 204 is connected to the circular support frame The support frame 201 is slidably connected, and the inner wall of the circular support frame 201 is fixedly connected with a limit plate 206. The outer wall of the connecting head 204 is provided with a groove 207. The limit plate 206 is slidably connected to the groove 207. A drag chain plate 205 is fixedly connected between the two connecting heads 204. The material of the drag chain plate 205 is high manganese steel. Slide grooves are provided on both sides of the scraper body 1. The drag chain plate 205 is slidably connected to the slide grooves. The drag chain plate 205 is located in the scraper body 1. The scraper body 1 is detachably connected with an upper cover 3. Both ends of the upper cover 3 are bolted to the scraper body 1, and one side of the upper cover 3 is a transparent plate 301.

[0022] The implementation method of this embodiment is as follows: when it is necessary to tighten the chain, first the staff member simultaneously rotates the handles 208 on the two nuts 203. At this time, the nuts 203 rotate in place, and the screw rod 202 moves upward. As the screw rod 202 moves upward, the connector 204 also moves upward. As the connector 204 moves upward, the chain plate 205 also moves upward to resist the chain and moves the chain upward. The tension of the chain is observed. After the chain tension is appropriate, the rotation of the nuts 203 is stopped, and the tightening of the chain is completed. When it is not necessary to tighten the chain, first the staff member simultaneously rotates the handles 208 on the two nuts 203 in the opposite direction. At this time, the nuts 203 rotate in place, and the screw rod 202 moves downward. As the screw rod 202 moves downward, the connector 204 also moves downward. As the connector 204 moves downward, the chain plate 205 also moves downward and gradually relaxes the chain. When the chain plate 205 is no longer in contact with the chain, the rotation of the nuts 203 is stopped.

[0023] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A scraper with adjustable scraper chain tension, characterized in that: The invention comprises a scraper body (1) and a tensioning mechanism (2), wherein the tensioning mechanism (2) comprises two circular support frames (201), each of the circular support frames (201) being fixedly connected to the outer walls of both sides of the scraper body (1), each of the circular support frames (201) being rotatably penetrated by a screw rod (202), the screw rod (202) being threadedly connected to a nut (203), the bottom of the nut (203) being against the top of the circular support frame (201), Each of the screw rods (202) is provided with a connecting head (204) at one end located in the circular support frame (201); the connecting head (204) is slidably connected to the circular support frame (201); a drag chain plate (205) is fixedly connected between the two connecting heads (204); sliding grooves are provided on both sides of the scraper body (1); the drag chain plate (205) is slidably connected to the sliding grooves; and the drag chain plate (205) is located in the scraper body (1).

2. A scraper machine with adjustable scraper chain tension according to claim 1, characterized in that: The inner wall of the circular support frame (201) is provided with a limiting plate (206), the outer wall of the connecting head (204) is provided with a groove (207), and the limiting plate (206) is slidably connected to the groove (207).

3. A scraper machine with adjustable scraper chain tension according to claim 1, characterized in that: The nut (203) is provided with a handle (208).

4. A scraper machine with adjustable scraper chain tension according to claim 1, characterized in that: The scraper body (1) is detachably connected to an upper cover (3).

5. A scraper machine with adjustable scraper chain tension according to claim 4, characterized in that: One side of the upper cover (3) is a transparent plate (301).

6. A scraper machine with adjustable scraper chain tension according to claim 1, characterized in that: The material of the drag chain plate (205) is high manganese steel.

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