Scraper tensioning device

Abstract

The utility model relates to the technical field of scraper tensioning, and discloses a scraper tensioning device which comprises a main body mechanism, a winding drum and a tensioning mechanism, the tensioning mechanism is fixedly installed in the main body mechanism, the main body mechanism comprises a tensioning winch, a base and a supporting frame, the base is fixedly installed at the bottom end of the tensioning winch, and the supporting frame is fixedly installed at the bottom end of the base. Supporting frames are fixedly installed on the two sides of the base. The tensioning device has the function of keeping proper tension of the chain, and can ensure that the chain of the scraper conveyor is always kept in a proper tension range. The faults of chain jumping, chain clamping and the like caused by over-looseness of the chain, excessive abrasion caused by over-tightness of the chain and increase of running resistance of equipment can be prevented. And the scraper conveyor is more stable and reliable in the operation process by accurately adjusting the tension. And along with the change of the load of the scraper conveyor, the pulling force borne by the chain can be correspondingly changed.

Description

TECHNICAL FIELD

[0001] The utility model relates to scraper tensioner technical field, concretely is a scraper tensioner. BACKGROUND

[0002] The scraper conveyor is the necessary transport equipment of coal mine, at present, the small and medium-sized coal mine mining working face also widely uses it, the scraper chain that it cultivates is thick and long, according to the difference of transport distance, the chain self weight is very big, reaches several tons even dozens of tons, and according to the actual work needs to remove the excess chain ring when tensioning, it is very difficult to do. In the past, we usually use the chain grabber to pinch, the process is that one end of the chain grabber is inserted in the round hole of the left and right side plates of the machine head frame respectively, the other end is in the vertical ring of the symmetrical position of the circular ring chain, the reverse car is opened, the slack chain is turned to the machine head, the excess chain is removed in the parking moment, and the circular ring chain is butt jointed, then the chain grabber is removed. Taking the blasting mining working face as an example, basically every small class needs to pinch the chain once, and the chain pinching requires high skill of the scraper driver, the chain pinching personnel on both sides of the machine head need to be quick and accurate, and need to cooperate with the scraper driver. It brings great hidden danger to safety. The coal mine also often causes hand collision due to careless chain pinching.

[0003] The existing technology patent document with the publication number CN 203306612 U provides a scraper tensioner, solves the problem that the scraper chain is not easy to tension and adjust, the design is simple, the structure is reasonable, the two fixed plates are symmetrically welded on the side of the tail shell close to the tail wheel shaft, the tension of the scraper chain is adjusted through the screw rod, so that the purpose of adjusting the tension of the scraper chain is achieved, and it is convenient, safe and reliable to operate.

[0004] But the existing one needs to consume manual operation when operating conveniently, and accidents are prone to occur during the tensioning process, which cannot guarantee the personal safety of construction personnel. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] The utility model aims at providing a scraper tensioner to solve the problem that the existing one cannot guarantee the personal safety of construction personnel in the above background technology.

[0007] (II) technical scheme

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a scraper blade machine tensioning device, including main body mechanism, reel and tensioning mechanism, the inside fixed mounting of main body mechanism has tensioning mechanism, the main body mechanism includes tensioning winch, base, support frame, the base is fixedly installed at the bottom of tensioning winch, the support frame is fixedly installed at the both sides of base,

[0009] The tensioning mechanism includes a speed reducer, a guide rail and a sliding block, the reel is fixedly installed with a speed reducer, the tail end of the tensioning winch is fixedly installed with a guide rail, and the surface of the guide rail is fixedly installed with a sliding block.

[0010] Preferably, the main body mechanism further comprises a motor and a reel, the motor is fixedly installed in the tensioning winch, and the tensioning winch is fixedly installed with a plurality of reels on the side and inside.

[0011] Preferably, the main body mechanism further comprises a control box and a display screen, the control box is fixedly installed on one side of the tensioning winch, and the display screen is fixedly installed on one side of the surface of the control box.

[0012] Preferably, the main body mechanism further comprises a pulley and a bolt, the tensioning winch is fixedly installed with a plurality of pulleys at the bottom, and the tensioning winch is fixedly installed with a plurality of bolts on the both sides.

[0013] Preferably, the tensioning mechanism further comprises a steel wire rope and a hook, the reel is fixedly installed with a steel wire rope on the surface, and the tail end of the steel wire rope is fixedly installed with a hook.

[0014] Preferably, the tensioning mechanism further comprises a fixed groove and a limiting groove, the tail end of the tensioning winch is fixedly installed with a fixed groove, the guide rail is installed in the fixed groove, and the limiting groove is fixedly installed at the both ends of the guide rail.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1、Maintain the chain proper tension, tensioning device can ensure that the scraper chain always remains in the proper tension range. This can prevent the chain slack caused by jumping chain, chain jam and other failures, and the chain too tight caused by excessive wear and equipment running resistance. By adjusting the tension accurately, the scraper is more stable and reliable in the running process. Adapt to load changes, as the scraper load changes, the tension of the chain will also change accordingly. Tensioning device can automatically or manually adjust the tension to adapt to different load conditions. Whether it is light or heavy load, it can ensure the normal operation of the scraper, improve the adaptability of the equipment to different working conditions. Reduce chain wear, proper tension can reduce the friction and wear between the chain and the sprocket. When the chain tension is moderate, the meshing of the chain and the sprocket is better, reducing the stretching, twisting and wear of the chain, prolonging the service life of the chain. At the same time, the tensioning device can also avoid the chain from shaking and impacting during operation due to relaxation, further reducing the wear degree of the chain. Protect other components, not only the tensioning device protects the chain, but also protects other components of the scraper. For example, when the chain tension is too large, it may cause excessive load on the motor, reducer and other transmission components, affecting their service life. The tensioning device controls the tension, reduces the burden of the transmission components, and reduces the incidence of equipment failure. In addition, stable chain tension can also help reduce the wear of the scraper, chute and other components, improve the reliability of the entire scraper system. Reduce downtime, since the tensioning device can maintain the proper tension of the chain, it reduces the downtime caused by chain failure. This is particularly important for continuous production enterprises, as it can improve production efficiency and reduce production costs;

[0017] 2、Convenient maintenance and adjustment, tensioning device is usually designed for easy operation and maintenance. Operators can easily adjust the chain tension according to actual conditions, and perform routine maintenance and repair of the equipment. This not only improves the efficiency of maintenance work, but also reduces maintenance costs. Prevent accidents, overload protection and limit protection functions of the tensioning device can effectively prevent accidents. When the chain tension exceeds the set value, the overload protection device will automatically cut off the power supply to avoid chain breakage or damage to other components. Limit protection can prevent the tensioning slider from exceeding the safe range, ensuring the safety of equipment operation. Improve equipment reliability, stable operation of the tensioning device can improve the overall reliability of the scraper. Reliable equipment operation can reduce safety hazards caused by equipment failure, providing a safer guarantee for production operations. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic view of the utility model;

[0019] Figure 2 is a structure schematic view of the utility model;

[0020] Figure 3 It is a structure schematic view of the utility model.

[0021] Figure 4 It is a structure schematic view of the utility model.

[0022] In the drawing: 1, 101, tension winch; 102, base; 103, support frame; 104, motor; 105, drum; 106, control box; 107, display screen; 108, pulley; 109, bolt; 2, tensioning mechanism; 201, speed reducer; 202, guide rail; 203, sliding block; 204, steel wire rope; 205, lifting hook; 206, fixing groove; 207, limiting groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figure 1 - Figure 4 The utility model provides a kind of technical scheme: a scraper machine tensioning device, including main body mechanism 1, drum 105 and tensioning mechanism 2, the main body mechanism 1 inside fixed installation has tensioning mechanism 2, the main body mechanism 1 includes tension winch 101, base 102, support frame 103, the tension winch 101 bottom end fixed installation has base 102, the base 102 both sides fixed installation has support frame 103;

[0025] The tensioning mechanism 2 includes speed reducer 201, guide rail 202, sliding block 203, the drum 105 is fixedly installed with speed reducer 201, the tension winch 101 tail end fixed installation has guide rail 202, the guide rail 202 surface fixed installation has sliding block 203.

[0026] Preferably, the main body mechanism 1 further includes motor 104 and drum 105, the tension winch 101 inside fixed installation has motor 104, the tension winch 101 side and inside fixed installation has several drums 105.

[0027] Preferably, the main body mechanism 1 further includes control box 106 and display screen 107, the tension winch 101 one side fixed installation has control box 106, the control box 106 surface one side fixed installation has display screen 107.

[0028] Preferably, the main body mechanism 1 further comprises pulleys 108 and bolts 109, a plurality of pulleys 108 are fixedly installed at the bottom end of the tension winch 101, and a plurality of bolts 109 are fixedly installed at the two sides of the tension winch 101.

[0029] Preferably, the tension mechanism 2 further comprises a steel wire rope 204 and a hook 205, the steel wire rope 204 is fixedly installed on the surface of the winding drum 105, and the hook 205 is fixedly installed at the tail end of the steel wire rope 204.

[0030] Preferably, the tension mechanism 2 further comprises a fixing groove 206 and a limiting groove 207, the fixing groove 206 is fixedly installed at the tail end of the tension winch 101, the guide rail 202 is installed in the fixing groove 206, and the limiting groove 207 is fixedly installed at the two ends of the guide rail 202.

[0031] Working principle: the tensioning winch 101 is the core component of the tensioning device, mainly responsible for providing tension. It is usually composed of a motor 104, a speed reducer 201, a winding drum 105, etc. The motor 104 provides power, driving the winding drum 105 to rotate through the speed reducer 201. The winding drum 105 is wound with a steel wire rope 204 or a chain, and the tensioning degree of the scraper chain is adjusted by winding or unwinding the steel wire rope 204 or the chain. The tensioning slider 203 is installed at the tail of the scraper, used to bear the tension and transmit it to the scraper chain. The tensioning slider 203 can slide on the guide rail 202 to adapt to the expansion and contraction of the scraper chain. During the tensioning process, the tensioning slider 203 moves with the winding or unwinding of the steel wire rope 204 or the chain, thereby adjusting the tensioning degree of the scraper chain. The tensioning guide rail 202 provides guidance and support for the tensioning slider 203, ensuring that the tensioning slider 203 can move smoothly. The steel wire rope 204 has the advantages of high strength and good flexibility, connecting the tensioning winch 101 and the tensioning slider 203, and transmitting the tension. The lifting hook 205 is used to connect the steel wire rope 204 or the chain with the tensioning winch 101, the tensioning slider 203, etc. The control box 106 is the control center of the tensioning device, used to control the start, stop, forward and reverse rotation, etc. of the tensioning winch 101. The control box 106 is usually composed of electrical elements, controllers, display screens 107, etc. The display screen 107 can display parameters such as tension and tension stroke, making it convenient for operators to understand the working status of the tensioning device. The limiting groove 207 is used to limit the movement range of the tensioning slider 203, preventing the tensioning slider 203 from exceeding the travel of the guide rail 202 and damaging the equipment. During installation, the limiting groove 207 needs to be correctly installed and adjusted to ensure that the tensioning winch 101 can be stopped in time when the tensioning slider 203 reaches the limit position, protecting the safety of the equipment. After the scraper is installed or before it is operated, the tensioning device is in the initial state. At this time, the scraper chain may be in a relaxed state, the tensioning slider 203 is located at one end of the guide rail 202, and a certain length of steel wire rope 204 is wound on the winding drum 105 of the tensioning winch 101. The control system will automatically control the operation of the tensioning winch 101 according to the preset program and the parameters detected by the sensor. For example, when the sensor detects that the tension is less than the set value, the control system will start the tensioning winch 101 to wind the steel wire rope 204 or the chain, increasing the tension. When the sensor detects that the tension is greater than the set value, the control system will reverse the tensioning winch 101 to unwind the steel wire rope 204 or the chain, reducing the tension. The automatic tensioning device can monitor the change of the tension in real time and automatically adjust the tension, keeping the scraper chain in a suitable tensioning state, improving the running stability and reliability of the scraper. During the operation of the scraper, the tension may change due to chain wear, elongation, load change, etc. At this time, the tensioning device will automatically or manually adjust to maintain the stability of the tension. The chain elongates, and as the scraper operates, the chain may gradually elongate due to wear and stretch.When the chain is elongated to a certain extent, the tension force will decrease, at which time the tension device will automatically or manually increase the tension force to compensate for the elongation of the chain. Load changes, when the load of the scraper changes, the tension of the chain will also change, thereby affecting the tension force. For example, when the load of the scraper increases, the tension of the chain increases, and the tension force also increases accordingly. At this time, the tension device may need to automatically or manually reduce the tension force to prevent the chain from being too tight and damaged. Conversely, when the load of the scraper decreases, the tension of the chain decreases, and the tension force also decreases accordingly. At this time, the tension device may need to automatically or manually increase the tension force to prevent the chain from being loose and affecting the normal operation of the scraper. Overload protection, when the tension force exceeds the set maximum value, the overload protection device will automatically start, cut off the power supply of the tension winch 101, prevent the tension force from being too large to damage the scraper chain or other parts. For example, when the pressure sensor detects that the tension force exceeds the set value, the control system will immediately stop the operation of the tension winch 101 and issue an alarm. The overload protection device can effectively protect the safety of the equipment and avoid accidents caused by excessive tension force. Limit protection, the limiting groove 207 is used to limit the movement range of the tension sliding block 203, prevent the tension sliding block 203 from exceeding the stroke of the guide rail 202 and damage the equipment. When the tension sliding block 203 reaches the limit position of the guide rail 202, the limiting groove 207 will trigger, stop the operation of the tension winch 101.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solutions of the present application, and is not a limitation on the protection scope of the present application. Simple modifications or equivalent replacements of the technical solutions of the present application made by ordinary skilled in the art do not deviate from the essence and scope of the technical solutions of the present application.

Claims

1. A scraper tensioning device, comprising a main body mechanism (1), a reel (105) and a tensioning mechanism (2), the tensioning mechanism (2) is fixedly installed inside the main body mechanism (1), characterized in that: The main body mechanism (1) includes a tension winch (101), a base (102), a support frame (103), the bottom end of the tension winch (101) is fixedly installed with the base (102), and the base (102) is fixedly installed with the support frame (103) on both sides. The tension mechanism (2) comprises a speed reducer (201), a guide rail (202) and a sliding block (203), the winding drum (105) is fixedly installed with the speed reducer (201), the tail end of the tension winch (101) is fixedly installed with the guide rail (202), and the surface of the guide rail (202) is fixedly installed with the sliding block (203); The main body mechanism (1) further comprises a motor (104) and a winding drum (105), the inside of the tension winch (101) is fixedly installed with the motor (104), and the side and the inside of the tension winch (101) are fixedly installed with a plurality of winding drums (105); The main body mechanism (1) further comprises a control box (106) and a display screen (107), one side of the tension winch (101) is fixedly installed with the control box (106), and one side of the surface of the control box (106) is fixedly installed with the display screen (107); The main body mechanism (1) further comprises a pulley (108) and a bolt (109), the bottom end of the tension winch (101) is fixedly installed with a plurality of pulleys (108), and the two sides of the tension winch (101) are fixedly installed with a plurality of bolts (109); The tension mechanism (2) further comprises a steel wire rope (204) and a lifting hook (205), the surface of the winding drum (105) is fixedly installed with the steel wire rope (204), and the tail end of the steel wire rope (204) is fixedly installed with the lifting hook (205); The tension mechanism (2) further comprises a fixing groove (206) and a limiting groove (207), the tail end of the tension winch (101) is fixedly installed with the fixing groove (206), the guide rail (202) is installed in the fixing groove (206), and the two ends of the guide rail (202) are fixedly installed with the limiting grooves (207).

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