Motor protection device of double-geared-roller crusher

Abstract

The utility model relates to the technical field of mechanical production, in particular to a double-geared-roller crusher motor protection device which comprises a motor, a base is fixedly arranged at the tail end of a rotating shaft of the motor, a buffer shell is fixedly arranged on the side, away from the motor, of the base, and a transmission mechanism is fixedly arranged in the buffer shell. When the device is used, the motor rotates to drive the base on one side to rotate, the base drives the whole buffer shell on one side to rotate, a large amount of hydraulic oil is contained in the buffer shell, and therefore in the rotating process of the buffer shell, the hydraulic oil is driven by the first blade on one side of the buffer shell to move towards one side. And therefore, after the overload problem is solved, the device can immediately start to work, and internal components do not need to be overhauled or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical production, in particular to a motor protection device for a double-toothed roller crusher. Background Art

[0002] Double-toothed roll crusher can be used to crush materials such as rock, coal, limestone, metal ore, coke, gypsum, etc. It is widely used in the coarse, medium and fine crushing of materials in industries such as coal mines, metal mines, non-metallic mines and cement construction. It has heavy workload, high strength, frequent start-up and frequent motor damage. If a large double-toothed roll crusher is directly driven by a motor, it is easy to damage the motor due to overload.

[0003] A motor protection device for a double-toothed roller crusher disclosed in the Chinese utility model patent application disclosure CN 206897501 U includes a coupling 1, a coupling 2 and a safety bolt, wherein the coupling 1 is connected to the roller of the double-toothed roller crusher, the coupling 2 is connected to the motor, the coupling 1 and the coupling 2 are connected via a safety bolt, an end cover is installed in the coupling 1, and the material of the safety bolt is preferably a nylon rod. When the crushing strength of the motor protection device for the double-toothed roller crusher exceeds the load that the motor can bear, the safety bolt breaks, the couplings are disconnected, the double-toothed roller crusher stops working, and the motor is protected. The motor protection device for the double-toothed roller crusher has a simple structure and strong practicality, but the device uses the mutual friction between the devices and other forces to achieve the effect of transmission and overload separation. Therefore, when using it, it is necessary to regularly check and maintain the device every once in a while, especially after an overload occurs, the wear and tear of the parts of this device is particularly serious and needs to be replaced in time. Utility Model Content

[0004] The utility model aims to provide a motor protection device for a double-toothed roller crusher to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A motor protection device for a double-toothed roller crusher comprises a motor, a base is fixedly arranged at the end of the motor shaft, a buffer shell is fixedly arranged on the side of the base away from the motor, a transmission mechanism is fixedly arranged inside the buffer shell, a plurality of first blades are fixedly arranged on the side of the transmission mechanism away from the base, a power-assisting mechanism is fixedly arranged on the side of the transmission mechanism close to the base, one side of the power-assisting mechanism is fixedly connected to the base, a torque converter is movably arranged between the first blades and the transmission mechanism, and the torque converter is fixedly connected to the buffer shell via a connecting shaft.

[0007] Preferably, the transmission mechanism includes a transmission shaft, a transmission wheel is fixedly provided at one end of the transmission shaft, the transmission shaft is movably connected to the base at one end close to the transmission wheel, a plurality of second blades are fixedly provided inside the transmission wheel, and the transmission wheel is movably provided inside the buffer shell through the transmission shaft.

[0008] According to the above scheme, by setting the transmission wheel, when the buffer shell squeezes the hydraulic oil to the transmission wheel part, it will push the transmission wheel to rotate, and the rotation of the transmission wheel drives the transmission shaft to transmit the power generated by the motor to the machine.

[0009] Preferably, the power-assisting mechanism includes a metal ring, a plurality of sleeves are fixedly provided on the side of the metal ring away from the base, a guide rod is fixedly provided inside the sleeve, a pressure spring is fixedly provided outside the guide rod, the pressure spring is fixed inside the sleeve, a friction pad is fixedly provided on one end of the guide rod close to the transmission shaft, and a counterweight ball is fixedly provided on the side of the guide rod away from the transmission shaft.

[0010] Through the above scheme, a sleeve is set up with a spring and a guide rod inside the sleeve. When the motor is not working, the guide rod is pressed onto the transmission shaft by the pressure of the spring. After the motor rotates, the guide rod rotates with the transmission shaft, which is convenient for quickly transmitting power when the motor is just started. The gravity ball can ensure that the effect of the guide rod will not affect the anti-overload capability of the device.

[0011] Preferably, the torque converter mechanism comprises a rolling bearing, a ratchet is fixedly provided on one side of the rolling bearing, a one-way tooth is movably provided on the outer side of the ratchet, a plurality of third blades are fixedly provided on the outside of the rolling bearing, and the rolling bearing is movably installed on one side of the buffer shell.

[0012] Through the above scheme, a ratchet is set up with a rolling bearing on one side of the ratchet to support the external blades to rotate in one direction. Once the blades reverse for some reason, the one-way teeth on the outside of the ratchet will prevent the ratchet from reversing, and the blades outside the bearing can guide the hydraulic oil to change direction to increase the transmission power.

[0013] Preferably, a swivel hole is fixedly provided on a side of the buffer shell close to the first blade, the transmission mechanism is movably connected to the buffer shell through the swivel hole, and a plurality of sealing rings are fixedly provided between the swivel hole and the transmission shaft.

[0014] Through the above scheme, by setting the swivel hole, the buffer shell and the transmission mechanism are not in fixed contact, but the transmission shaft is connected to the inside of the buffer shell through the swivel hole. Because there is a lot of hydraulic oil inside, that thing is very powerful, so a lot of sealing structures need to be installed.

[0015] Preferably, the friction pad is made of rubber, a plurality of friction lines are fixedly provided on one side of the transmission rod close to the friction pad, and the buffer shell is filled with hydraulic oil.

[0016] Through the above solution, by using rubber material, the rubber material can effectively increase the contact area of ​​the transmission shaft surface when the motor is working normally, and can also effectively improve the transmission efficiency. Because the rubber material is soft, when the motor is overloaded when it is just started, it will slip due to the soft rubber, thereby further protecting the motor.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. A motor protection device for a double-toothed roller crusher, when in use, the motor rotates to drive the base on one side to rotate, and the base drives the overall buffer shell on one side to rotate. Because there is a lot of hydraulic oil inside the buffer shell, during the rotation of the buffer shell, the hydraulic oil moves to one side driven by the first blade on one side of the buffer shell, and impacts the second blade of the transmission wheel on the other side, so that the transmission wheel rotates with it, and transmits power to other parts of the machine through the transmission rod. Because the buffer shell that does work and the transmission wheel on one side are not fixedly connected, once the machine is overloaded during use, the buffer shell and the transmission wheel will be disconnected. At this time, the motor will only be in an idling state without damaging the foundation. Moreover, because the structure and principle of the device are extremely simple, it is very durable, so it can start working immediately after the overload problem is eliminated, and there is no need to inspect or replace the internal components.

[0019] 2. This double-toothed roller crusher motor protection device, when the motor starts, several guide rods on the power-assisting mechanism on one side of the machine will tightly squeeze the middle transmission rod under the action of the spring, cooperate with the friction lines on the transmission rod, when the motor starts to rotate, the device will lead the transmission rod to rotate together, when the motor reaches a certain speed in the later stage, the counterweight ball at one end of the guide rod will pull the guide rod and the transmission shaft apart under the action of centrifugal force, at this time the power of the motor is completely transferred to the impeller and hydraulic oil on one side, the device can realize the rapid start of the motor and the machine without affecting the overload protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation of the transmission mechanism structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the power-assisting mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the installation structure of the torque converter mechanism of the utility model.

[0024] In the figure: 1. motor; 2. base; 3. buffer shell; 4. first blade; 5. rotating hole; 6. sealing ring; 101. transmission shaft; 102. transmission wheel; 103. second blade; 104. friction pattern; 201. metal ring; 202. sleeve; 203. guide rod; 204. pressure spring; 205. friction pad; 206. counterweight ball; 301. rolling bearing; 302. ratchet; 303. one-way tooth; 304. third blade. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0027] See also Figure 1-Figure 4 As shown, a technical solution provided by the utility model:

[0028] A motor protection device for a double-toothed roller crusher comprises a motor 1, a base 2 is fixedly arranged at the end of the rotating shaft of the motor 1, a buffer shell 3 is fixedly arranged on the side of the base 2 away from the motor 1, a transmission mechanism is fixedly arranged inside the buffer shell 3, a plurality of first blades 4 are fixedly arranged on the side of the transmission mechanism away from the base 2, a power-assisting mechanism is fixedly arranged on the side of the transmission mechanism close to the base 2, one side of the power-assisting mechanism is fixedly connected to the base 2, a torque converter mechanism is movably arranged between the first blades 4 and the transmission mechanism, and the torque converter mechanism is fixedly connected to the buffer shell 3 via a connecting shaft.

[0029] In this embodiment, preferably, the transmission mechanism includes a transmission shaft 101, a transmission wheel 102 is fixedly provided at one end of the transmission shaft 101, the transmission shaft 101 is movably connected to the base 2 at one end close to the transmission wheel 102, a plurality of second blades 103 are fixedly provided inside the transmission wheel 102, and the transmission wheel 102 is movably provided inside the buffer shell 3 through the transmission shaft 101.

[0030] According to the above scheme, by setting the transmission wheel, when the buffer shell squeezes the hydraulic oil to the transmission wheel part, it will push the transmission wheel to rotate, and the rotation of the transmission wheel drives the transmission shaft to transmit the power generated by the motor to the machine.

[0031] In this embodiment, preferably, the power assist mechanism includes a metal ring 201, a plurality of sleeves 202 are fixedly provided on the side of the metal ring 201 away from the base 2, a guide rod 203 is fixedly provided inside the sleeve 202, a pressure spring 204 is fixedly provided outside the guide rod 203, the pressure spring 204 is fixedly provided inside the sleeve 202, a friction pad 205 is fixedly provided on one end of the guide rod 203 close to the transmission shaft 101, and a counterweight ball 206 is fixedly provided on the side of the guide rod 203 away from the transmission shaft 101.

[0032] Through the above scheme, a sleeve is set up with a spring and a guide rod inside the sleeve. When the motor is not working, the guide rod is pressed onto the transmission shaft by the pressure of the spring. After the motor rotates, the guide rod rotates with the transmission shaft, which is convenient for quickly transmitting power when the motor is just started. The gravity ball can ensure that the effect of the guide rod will not affect the anti-overload capability of the device.

[0033] In this embodiment, preferably, the torque converter mechanism includes a rolling bearing 301, a ratchet 302 is fixedly provided on one side of the rolling bearing 301, a one-way tooth 303 is movably provided on the outer side of the ratchet 302, a plurality of third blades 304 are fixedly provided on the outside of the rolling bearing 301, and the rolling bearing 301 is movably installed on one side of the buffer shell 3.

[0034] Through the above scheme, a ratchet is set up with a rolling bearing on one side of the ratchet to support the external blades to rotate in one direction. Once the blades reverse for some reason, the one-way teeth on the outside of the ratchet will prevent the ratchet from reversing, and the blades outside the bearing can guide the hydraulic oil to change direction to increase the transmission power.

[0035] In this embodiment, preferably, a rotating hole 5 is fixedly provided on one side of the buffer shell 3 close to the first blade 4 , the transmission mechanism is movably connected to the buffer shell 3 through the rotating hole 5 , and a plurality of sealing rings 6 are fixedly provided between the rotating hole 5 and the transmission shaft 101 .

[0036] Through the above scheme, by setting the swivel hole, the buffer shell and the transmission mechanism are not in fixed contact, but the transmission shaft is connected to the inside of the buffer shell through the swivel hole. Because there is a lot of hydraulic oil inside, that thing is very powerful, so a lot of sealing structures need to be installed.

[0037] In this embodiment, preferably, the friction pad 205 is made of rubber, a plurality of friction lines 104 are fixedly provided on one side of the transmission rod close to the friction pad 205, and the buffer shell 3 is filled with hydraulic oil.

[0038] Through the above solution, by using rubber material, the rubber material can effectively increase the contact area of ​​the transmission shaft surface when the motor is working normally, and can also effectively improve the transmission efficiency. Because the rubber material is soft, when the motor is overloaded when it is just started, it will slip due to the soft rubber, thereby further protecting the motor.

[0039] When the double-toothed roller crusher motor protection device of the present embodiment is in use, the motor 1 rotates to drive the base 2 on one side to rotate, and the base 2 drives the overall buffer shell 3 on one side to rotate. Because there is a lot of hydraulic oil inside the buffer shell 3, during the rotation of the buffer shell 3, the hydraulic oil moves to one side under the drive of the first blade 4 on one side of the buffer shell 3, and impacts the second blade 103 of the transmission wheel 102 on the other side, so that the transmission wheel 102 rotates with it, and transmits power to other parts of the machine through the transmission rod. Because the buffer shell 3 doing work and the transmission wheel 102 on one side are not fixedly connected, once the machine is overloaded during use, the buffer shell 3 and the transmission wheel 102 will be disconnected. At this time, the motor 1 will only be in an idling state without damaging the foundation, and the device is The structure and principle are extremely simple and therefore very durable. Therefore, it can start working immediately after the overload problem is eliminated, and there is no need to inspect or replace the internal structure. At the beginning of the motor 1, several guide rods 203 on the power-assisting mechanism on one side of the machine will tightly squeeze the middle transmission rod under the action of the spring, and cooperate with the friction lines 104 on the transmission rod. When the motor 1 starts to rotate, the device will lead the transmission rod to rotate together. When the motor 1 reaches a certain speed in the later stage, the counterweight ball 206 at one end of the guide rod 203 will pull the guide rod 203 and the transmission shaft 101 out of contact under the action of centrifugal force. At this time, the power of the motor 1 is completely transferred to the impeller and hydraulic oil on one side for transmission. The device can achieve rapid start-up of the motor 1 and the machine without affecting the overload protection.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A motor protection device for a double-toothed roller crusher, characterized in that: The invention comprises a motor (1), wherein a base (2) is fixedly arranged at the end of a rotating shaft of the motor (1), a buffer shell (3) is fixedly arranged on the side of the base (2) away from the motor (1), a transmission mechanism is fixedly arranged inside the buffer shell (3), a plurality of first blades (4) are fixedly arranged on the side of the transmission mechanism away from the base (2), a power-assisting mechanism is fixedly arranged on the side of the transmission mechanism close to the base (2), one side of the power-assisting mechanism is fixedly connected to the base (2), a torque-converting mechanism is movably arranged between the first blades (4) and the transmission mechanism, and the torque-converting mechanism is fixedly connected to the buffer shell (3) via a connecting shaft.

2. A double-toothed roller crusher motor protection device according to claim 1, characterized in that: The transmission mechanism comprises a transmission shaft (101), a transmission wheel (102) being fixedly arranged at one end of the transmission shaft (101), an end of the transmission shaft (101) close to the transmission wheel (102) being movably connected to a base (2), a plurality of second blades (103) being fixedly arranged inside the transmission wheel (102), and the transmission wheel (102) being movably arranged inside the buffer shell (3) via the transmission shaft (101).

3. A double-toothed roller crusher motor protection device according to claim 1, characterized in that: The power-assisting mechanism comprises a metal ring (201); a plurality of sleeves (202) are fixedly arranged on a side of the metal ring (201) away from the base (2); a guide rod (203) is fixedly arranged inside the sleeve (202); a pressure spring (204) is fixedly arranged outside the guide rod (203); the pressure spring (204) is fixedly arranged inside the sleeve (202); a friction pad (205) is fixedly arranged at one end of the guide rod (203) close to the transmission shaft (101); and a counterweight ball (206) is fixedly arranged on a side of the guide rod (203) away from the transmission shaft (101).

4. A double-toothed roller crusher motor protection device according to claim 1, characterized in that: The torque converter mechanism comprises a rolling bearing (301), a ratchet (302) is fixedly arranged on one side of the rolling bearing (301), a one-way tooth (303) is movably arranged on the outside of the ratchet (302), a plurality of third blades (304) are fixedly arranged on the outside of the rolling bearing (301), and the rolling bearing (301) is movably mounted on one side of the buffer shell (3).

5. A double-toothed roller crusher motor protection device according to claim 1, characterized in that: A slewing hole (5) is fixedly provided on one side of the buffer shell (3) close to the first blade (4); the transmission mechanism is movably connected to the buffer shell (3) via the slewing hole (5); and a plurality of sealing rings (6) are fixedly provided between the slewing hole (5) and the transmission shaft (101).

6. A double-toothed roller crusher motor protection device according to claim 3, characterized in that: The friction pad (205) is made of rubber, a plurality of friction lines (104) are fixedly arranged on one side of the transmission shaft close to the friction pad (205), and the buffer shell (3) is filled with hydraulic oil.

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