Jaw crusher

Abstract

The utility model provides a jaw crusher which comprises a jaw crusher body and a driving motor, an output shaft of the driving motor is connected with a torque sensor, an output end of the torque sensor is connected with a first belt pulley, and the first belt pulley is connected with a second belt pulley through a belt. The second belt pulley is connected with a movable jaw part of the jaw crusher body and drives the movable jaw part to operate; a pushing and pressing device is arranged above the feeding port of the jaw crusher body, the pushing and pressing device and the torque sensor are electrically connected with a controller at the same time, and the controller controls the pushing and pressing device to operate. And automatic identification and automatic treatment of the blockage state of the feeding hole are realized, and the intelligence and the production efficiency of the crusher are improved.

Description

Technical Field

[0001] The utility model relates to a crusher, in particular to a jaw crusher. Background Art

[0002] Jaw crusher, commonly known as jaw crusher, consists of two jaw plates, the moving jaw and the static jaw, forming a crushing chamber. Jaw crusher is mainly used as a coarse crusher and a medium crusher in the fields of mining, building materials, infrastructure, etc. It is usually used in the first crushing process of the crushing production line to crush large particles with a compressive strength of less than 320MPa. The finished product size is 100-300mm.

[0003] In actual use, there are often some large stones blocking the feed port of the jaw crusher. As the movable jaw moves, the stones are constantly squeezed and bounced at the feed port, resulting in low crushing efficiency. The current solution to this problem is generally through manual supervision. When a large stone is found blocking the feed port, the stone is hit manually with a sledgehammer. This solution is inefficient on the one hand, and the safety of the construction workers cannot be guaranteed on the other. Therefore, this application aims to solve the problem of large stones blocking the feed port of the crusher, resulting in low crushing efficiency. Summary of the invention

[0004] The purpose of the utility model is to provide a jaw crusher in view of the defects existing in the above-mentioned technology, in which a torque sensor is arranged on the output shaft of the motor to automatically detect the output torque of the motor to determine whether blocking and slipping occur. When a large stone blocks the feed port, the crusher does not perform crushing work. The output torque of the motor is less than the torque during the crushing operation. Then, the controller controls the pushing device to apply force to the stone causing the blockage, so that the passive jaw and the static jaw bite and crush the stone, thereby improving the crushing efficiency.

[0005] The purpose of the utility model is achieved as follows: it includes a jaw crusher body and is provided with a driving motor, the output shaft of the driving motor is connected to a torque sensor, the output end of the torque sensor is connected to a first pulley, the first pulley is connected to a second pulley through a belt, the second pulley is connected to the movable jaw of the jaw crusher body and drives it to operate; a pushing device is provided above the feed port of the jaw crusher body, the pushing device and the torque sensor are electrically connected to a controller at the same time, and the controller controls the operation of the pushing device.

[0006] Preferably, the pushing device includes a bracket, a driving part and a pressure-applying part, the lower part of the bracket is connected to the frames on both sides of the feed port of the jaw crusher body by bolts, the upper part of the bracket is provided with a mounting plate, the pressure-applying part is fixedly connected to the mounting plate, and the driving part is connected to the pressure-applying part and drives it to operate.

[0007] Preferably, the driving part is a hydraulic station, and the hydraulic station is arranged above the mounting plate.

[0008] Preferably, the pressure-applying part includes a hydraulic cylinder, a connecting plate, a pressure plate and a spring. The end of the hydraulic cylinder is connected to the connecting plate by bolts. The pressure plate is provided with a plurality of guide columns. The connecting plate is provided with guide sleeves corresponding to the guide columns. The guide columns are sleeved with the guide sleeves. A limit plate is provided at the end of the guide column. The limit plate is connected to the guide column by bolts. The guide column is also sleeved with a spring. The spring is arranged between the connecting plate and the pressure plate.

[0009] Preferably, the pressure plate is provided with reinforcing ribs, and the hydraulic cylinder is provided with an anti-rotation device.

[0010] Preferably, the controller is provided with a control panel, on which a display screen and a plurality of control keys are provided, and the manual and automatic modes are switched by the control keys.

[0011] The beneficial effects of the utility model are as follows: a torque sensor is arranged on the motor output shaft to automatically detect the motor output torque to determine whether blockage and slippage occur. When a large stone blocks the feed port, the crusher does not perform crushing work. The motor output torque is less than the torque during the crushing operation. The controller controls the pushing device to apply force to the stone that causes the blockage, so that the passive jaw and the static jaw bite and crush the stone, thereby realizing automatic identification and automatic processing of the blockage state of the feed port, improving the degree of automation and production efficiency. A plurality of control keys are arranged on the panel, and the switching between manual and automatic modes can be realized through the control keys, which is convenient for control. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model crusher Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model crusher Figure 2 ;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the pushing device of the utility model. DETAILED DESCRIPTION

[0015] The present application provides a jaw crusher, in which a torque sensor is arranged on the motor output shaft, and the motor output torque is automatically detected to determine whether the material blocking and slipping phenomenon occurs. When a large stone blocks the feed port, the crusher does not perform the crushing operation. If the motor output torque is less than the torque during the crushing operation, the controller controls the pushing device to apply force to the stone that causes the blockage, so that the passive jaw and the static jaw of the stone bite and crush, and the feed port blocking state is automatically identified and automatically processed, thereby improving the intelligence and production efficiency of the crusher. The problem that the large material block blocking the feed port in the prior art requires manual processing, which is inefficient and dangerous is solved.

[0016] The following is a further description of this implementation case in conjunction with the accompanying drawings:

[0017] Depend on Figure 1 — Figure 3 It can be seen that the present application includes a jaw crusher body, and is provided with a driving motor 1, the output shaft of the driving motor 1 is connected to a torque sensor 2, the output end of the torque sensor 2 is connected to a first pulley 3, the first pulley 3 is connected to a second pulley 5 through a belt 4, the second pulley 5 is connected to a movable jaw 6 of the jaw crusher body, and drives it to operate; a pushing device 7 is provided above the feed port 601 of the jaw crusher body, the pushing device 7 and the torque sensor 2 are electrically connected to a controller 8 at the same time, and the controller 8 controls the operation of the pushing device 7. The working principle of the technical solution in this embodiment is: when the crusher is normally performing a crushing operation and when the feed port is blocked and no crushing operation is performed, the output torque of the driving motor 1 is different, and the output torque during the crushing operation is much greater than the torque in the non-operating state. Therefore, the motor output torque range is set in the controller 8, and the controller automatically compares the motor output torque captured by the torque sensor 2 with the set value. If it is less than the set value, the controller automatically controls the pushing device 7 to operate and push the blocked stone. At the same time, under different working conditions, the delay time can also be set. If the motor output torque does not reach the set value range within a certain period of time, the pushing device 7 will operate; when the stone is broken normally, the output torque of the drive motor is within the set range, and the controller 8 automatically controls the pushing device 7 to retract. Automatic identification and automatic processing of feed port blockage are achieved.

[0018] On the basis of the above embodiment, preferably, the pushing device 7 includes a bracket 701, a driving part 702 and a pressure-applying part, the lower part of the bracket 701 is connected to the frames on both sides of the feed port of the jaw crusher body by bolts, the upper part of the bracket 701 is provided with a mounting plate 703, the pressure-applying part is fixedly connected to the mounting plate 703, and the driving part 702 is connected to the pressure-applying part and drives it to operate.

[0019] Based on the above implementation, preferably, the driving part 702 is a hydraulic station. In this embodiment, the hydraulic station is arranged above the mounting plate 703 and is connected to the mounting plate 703 by bolts. This is mainly due to the convenience of installation of the integrated structure. The hydraulic station can also be placed separately in actual use.

[0020] On the basis of the above embodiment, preferably, the pressure-applying part comprises a hydraulic cylinder 711, a connecting plate 712, a pressing plate 713 and a spring 714, the end of the hydraulic cylinder 711 is connected to the connecting plate 712 by bolts, the pressing plate 713 is provided with a plurality of guide posts 715, the connecting plate 712 is provided with guide sleeves 716 corresponding to the guide posts 715, the guide posts 715 are sleeved with the guide sleeves 716, the end of the guide posts 715 is provided with a limit plate 717, the limit plate 717 is connected to the guide posts 715 by bolts, the guide posts 715 are also sleeved with a spring 714, and the spring 714 is arranged between the connecting plate 712 and the pressing plate 713. In this embodiment, the pressure-applying part is provided with a spring 714, so that the pressing plate 713 is elastically connected to the hydraulic cylinder 711 during operation, thereby protecting the hydraulic cylinder.

[0021] On the basis of the above-mentioned implementation mode, preferably, the pressure plate 713 is provided with a reinforcing rib 718, which strengthens the pressure plate to prevent deformation and extend its service life; the hydraulic cylinder 711 is provided with an anti-rotation device 719, which prevents the pressure plate 713 from rotating during operation. In this embodiment, the anti-rotation device 719 includes a round rod connected to the hydraulic cylinder push rod and a guide ring arranged on the hydraulic cylinder body. The round rod is installed in the guide ring to prevent relative rotation between the cylinder body and the push rod of the hydraulic cylinder 711.

[0022] Based on the above implementation, preferably, the controller 8 is provided with a control panel, on which a display screen 801 and a plurality of control keys 802 are provided. The manual and automatic modes are switched by the control keys 802 to cope with various working conditions.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A jaw crusher, comprising a jaw crusher body, characterized in that: A driving motor is also provided, the output shaft of the driving motor is connected to a torque sensor, the output end of the torque sensor is connected to a first pulley, the first pulley is connected to a second pulley through a belt, the second pulley is connected to the movable jaw of the jaw crusher body and drives it to operate; a pushing device is provided above the feed port of the jaw crusher body, the pushing device and the torque sensor are electrically connected to a controller at the same time, and the controller controls the operation of the pushing device.

2. A jaw crusher according to claim 1, characterized in that: The pushing device includes a bracket, a driving part and a pressure-applying part. The lower part of the bracket is connected to the frames on both sides of the feed port of the jaw crusher body by bolts. The upper part of the bracket is provided with a mounting plate. The pressure-applying part is fixedly connected to the mounting plate. The driving part is connected to the pressure-applying part and drives it to operate.

3. A jaw crusher according to claim 2, characterized in that: The driving part is a hydraulic station, and the hydraulic station is arranged above the mounting plate.

4. A jaw crusher according to claim 2, characterized in that: The pressure-applying part includes a hydraulic cylinder, a connecting plate, a pressure plate and a spring. The end of the hydraulic cylinder is connected to the connecting plate by bolts. The pressure plate is provided with a plurality of guide pillars. The connecting plate is provided with guide sleeves corresponding to the guide pillars. The guide pillars are sleeved with the guide sleeves. A limit plate is provided at the end of the guide pillar. The limit plate is connected to the guide pillar by bolts. The guide pillar is also sleeved with a spring. The spring is arranged between the connecting plate and the pressure plate.

5. A jaw crusher according to claim 4, characterized in that: The pressure plate is provided with reinforcing ribs, and the hydraulic cylinder is provided with an anti-rotation device.

6. A jaw crusher according to claim 1, characterized in that: The controller is provided with a control panel, on which a display screen and a plurality of control keys are provided, and the manual and automatic modes are switched through the control keys.

Images