Oscillating crusher and stopping method

Abstract

To provide an oscillating crusher that can stop operation quickly while keeping cost increases to a minimum. [Solution] The oscillating crusher comprises a first tooth, a second tooth, an oscillating member, an actuator, a first member, a second member, and a control device. During operation, the actuator pulls the oscillating member away from the first tooth. The first member is provided on the oscillating member. The second member is in contact with the first member, and friction occurs between the two members as the oscillating member oscillates, and the actuator is pressed against the first member as it pulls the oscillating member. The control device controls the tensile force of the actuator to be greater than the tensile force during operation for at least a short period between deciding to stop operation and the oscillating member stopping.

Description

Technical Field

[0001] This application relates to a swing crusher. Specifically, it relates to the control or method for stopping a swing crusher.

Background Art

[0002] Patent Document 1 discloses a jaw crusher. The jaw crusher of Patent Document 1 has a fixed jaw, a swing jaw, and a flywheel. The fixed jaw is fixed to the main body of the jaw crusher. The swing jaw has a moving jaw facing the fixed jaw and is rotationally driven. The swing jaw is driven via a flywheel. Also, Patent Document 1 describes that the jaw crusher is stopped when an abnormality occurs.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] A swing crusher such as a jaw crusher includes a swing member that swings to crush an object to be crushed. Also, when stopping the operation of the swing crusher, even if the prime mover is stopped, the swing member does not stop immediately and the swing member performs an inertial motion. As an example, when the swing member is driven via a flywheel or the like, the inertial motion is more difficult to stop. Also, when a new actuator is provided to stop the inertial motion of the swing member, the cost increases.

[0005] This application has been made in view of the above circumstances, and its main object is to provide a swing crusher that can stop the operation in a short time while suppressing an increase in cost.

Means for Solving the Problems

[0006] The problem that this application aims to solve is as described above, and next, the means for solving this problem and their effects will be explained.

[0007] According to a first aspect of this application, an oscillating shredder having the following configuration is provided: The oscillating shredder comprises a first tooth, a second tooth, an oscillating member, an actuator, a first member, a second member, and a control device. The second tooth is spaced apart from the first tooth. The oscillating member is provided with the second tooth and oscillates when a driving force is transmitted to it, causing the second tooth to oscillate. The actuator pulls the oscillating member away from the first tooth during operation. The first member is provided on the oscillating member. The second member is in contact with the first member, and friction occurs between the two as the oscillating member oscillates, and the actuator pulls the oscillating member, pressing it away from the first member. The control device controls the tensile force of the actuator to be greater than the tensile force during operation for at least a moment between deciding to stop operation and the oscillating member stopping.

[0008] According to a second aspect of this application, the following stopping method is provided, namely, a stopping method for stopping the operation of an oscillating shredder. The oscillating shredder comprises a first tooth, a second tooth, an oscillating member, an actuator, a first member, and a second member. The second tooth is spaced apart from the first tooth. The oscillating member is provided with the second tooth and oscillates when a driving force is transmitted to it, causing the second tooth to oscillate. The actuator pulls the oscillating member away from the first tooth during operation. The first member is provided on the oscillating member. The second member is in contact with the first member, and friction occurs between the two as the oscillating member oscillates, and the actuator pulls the oscillating member, pressing it away from the first member. In this stopping method, at least for a brief period when stopping the operation of the oscillating shredder, the tensile force of the actuator is made greater than the tensile force during operation. [Effects of the Invention]

[0009] According to this application, it is possible to provide an oscillating crusher that can stop operation in a short time while keeping cost increases to a minimum. [Brief explanation of the drawing]

[0010] [Figure 1] A perspective view showing the overall configuration of a rocking crusher according to one embodiment of this application. [Figure 2] Cross-sectional view of an oscillating crusher. [Figure 3] A perspective view showing the interdental adjustment mechanism. [Figure 4] A flowchart showing the procedures to be performed when a rocking crusher is stopped. [Figure 5] Graphs showing the time variation of the pressure control instruction value for a hydraulic cylinder, in two examples. [Modes for carrying out the invention]

[0011] Next, embodiments of this application will be described with reference to the drawings.

[0012] The oscillating crusher 1 shown in Figures 1 to 3 is a primary processing facility for crushing materials such as rocks, ores, concrete waste, asphalt waste, or lumpy furnace slag.

[0013] As shown in Figure 1, the oscillating crusher 1 comprises a frame member 2, an eccentric shaft 3, fixed teeth 6, a swing jaw 4, and movable teeth 7. The swing jaw 4 corresponds to the "oscillating member". The fixed teeth 6 correspond to the "first teeth", and the movable teeth 7 correspond to the "second teeth".

[0014] The frame member 2 is the exterior part of the oscillating crusher 1. The frame member 2 has a pair of side walls 8. The two side walls 8 are arranged parallel to each other with a gap between them.

[0015] A horizontally positioned eccentric shaft 3 is rotatably supported on the frame member 2. The eccentric shaft 3 is positioned to span between two side walls 8. A pulley 10 is fixed to one end of the eccentric shaft 3. A belt 11 is wrapped around the outside of the pulley 10. The output shaft of a prime mover, such as an engine or electric motor, is connected to the eccentric shaft 3 via this belt 11. As a result, the eccentric shaft 3 is rotationally driven.

[0016] A flywheel 12 is fixed to the end of the eccentric shaft 3 opposite to the pulley 10. This stabilizes the rotation of the eccentric shaft 3.

[0017] The fixed wall 9 is positioned to connect the side walls 8 of the frame member 2. As shown in Figure 2, the fixed teeth 6 are fixed to the inner wall surface of the fixed wall 9.

[0018] The swing jaw 4 is a plate-like member, and most of it is inserted between the two side walls 8. In the swing jaw 4, movable teeth 7 are attached to the portion inserted into the frame member 2. The upper part of the swing jaw 4 is supported so as to be relatively rotatable with respect to the eccentric portion formed at the longitudinal center of the eccentric shaft 3. With this configuration, when the eccentric shaft 3 rotates, the upper part of the swing jaw 4 is displaced so as to draw a circle with the eccentricity as the radius around the rotation center of the pulley 10. Thereby, the swing jaw 4 can be swung.

[0019] The movable teeth 7 are fixed to the swing jaw 4 so as to face the fixed teeth 6. Therefore, when the swing jaw 4 swings, the movable teeth 7 also swing with respect to the fixed teeth 6.

[0020] As shown in FIG. 2, a crushing chamber 5, which is a space for crushing the object to be crushed, is formed between the fixed teeth 6 and the movable teeth 7. More specifically, the crushing chamber 5 is formed by being surrounded on four sides by the fixed teeth 6, the movable teeth 7, and the side walls 8. The crushing chamber 5 is open at the top and bottom. At least one of the fixed teeth 6 and the movable teeth 7 is inclined so that the crushing chamber 5 becomes narrower as it goes downward.

[0021] When the object to be crushed is input from above into the crushing chamber 5, the fixed teeth 6 and the movable teeth 7 act on the object to be crushed. Thereby, a compressive force is applied to the object to be crushed, and the object to be crushed is crushed. The crushed object to be crushed is discharged downward from the crushing chamber 5.

[0022] As shown in FIG. 2, the swing crusher 1 includes a hydraulic cylinder 15. The hydraulic cylinder 15 is supported by the frame member 2 and generates power when hydraulic oil is supplied through a hydraulic circuit. The hydraulic cylinder 15 includes a tension rod 15a and a cylinder tube 15b.

[0023] The tension rod 15a is an elongated member positioned to be either downward sloping or horizontal. The tip of the tension rod 15a is connected to the swing jaw 4. The tension rod 15a is inserted into the cylinder tube 15b. The cylinder tube 15b is supported by a frame member 2, etc. When hydraulic fluid is supplied to the cylinder tube 15b, the tension rod 15a expands and contracts relative to the cylinder tube 15b. This allows the tensile force that the hydraulic cylinder 15 applies to the swing jaw 4 to be changed. Specifically, as the hydraulic fluid is supplied to the hydraulic cylinder 15 and the pressure increases, the tension rod 15a contracts, and the hydraulic cylinder 15 pulls the swing jaw 4 strongly in the direction away from the fixed teeth 6.

[0024] The oscillating crusher 1 is equipped with a tooth adjustment mechanism 20 for adjusting the gap G1 formed between the fixed teeth 6 and the movable teeth 7. As shown in Figure 3, the tooth adjustment mechanism 20 comprises a tooth adjustment cylinder 21, a wedge mechanism 22, a toggle block 23, a toggle plate 24, and a receiving block 25. The toggle plate 24 corresponds to the "second member," and the receiving block 25 corresponds to the "first member."

[0025] Two inter-tooth adjustment cylinders 21 are provided, corresponding to the side walls 8 of the frame member 2. Each inter-tooth adjustment cylinder 21 is positioned so that its extension and retraction direction is approximately parallel to the eccentric axis 3. The pair of inter-tooth adjustment cylinders 21 are positioned with their rods facing each other, sandwiching the frame member 2. Each inter-tooth adjustment cylinder 21 is mounted so as to be sandwiched between a pair of support brackets 27 fixed to the side wall 8. Each support bracket 27 is positioned to protrude horizontally outward from the side wall 8.

[0026] The wedge mechanism 22 is composed of two triangular blocks, which are like elongated rectangles divided diagonally parallel to the eccentric axis 3. Each block is attached to a rod of the corresponding inter-tooth adjustment cylinder 21. As shown in Figure 2, in the frame member 2, a support wall 18 for receiving the wedge mechanism 22 is fixed between the two side walls 8. The wedge mechanism 22 is positioned between this support wall 18 and the toggle block 23.

[0027] The toggle block 23 is supported inside the frame member 2 so that it can slide linearly toward and away from the fixed wall 9.

[0028] In this configuration, when the inter-tooth adjustment cylinder 21 is driven in the extending direction, the blocks of the wedge mechanism 22 move relative to each other in a way that increases their engagement. As a result, the toggle block 23 is pushed and displaced with a strong force toward the fixed wall 9, and the toggle plate 24 can be moved.

[0029] The toggle plate 24 is positioned between the swing jaw 4 and the toggle block 23. The toggle plate 24 is formed in a flat shape. When considering a cross-section of the toggle plate 24 cut in a vertical plane, both the end closer to the swing jaw 4 and the end closer to the toggle block 23 have a rounded shape.

[0030] The end of the toggle plate 24 closest to the swing jaw 4 faces a receiving block 25 fixed to the swing jaw 4. More specifically, the receiving block 25 has a toggle sheet 25a. A shallow V-shaped groove is formed in the toggle sheet 25a. The end of the toggle plate 24 is inserted into the V-shaped groove of the toggle sheet 25a.

[0031] The end of the toggle plate 24 furthest from the swing jaw 4 faces the toggle block 23. The toggle block 23 has a shallow V-shaped groove, into which the end of the toggle plate 24 is inserted.

[0032] This allows the movements of the receiving block 25 and the toggle block 23 to be synchronized while absorbing the difference in their movement directions by appropriately changing the posture of the toggle plate 24.

[0033] Here, the toggle plate 24 is simply inserted into the V-shaped groove of the toggle seat 25a and is not fixed to the toggle seat 25a. The hydraulic cylinder 15 described above presses the toggle seat 25a against the toggle plate 24 to prevent the toggle plate 24 from falling off the toggle seat 25a. This will be explained in detail below. The lower part of the swing jaw 4 is subjected to a force that moves it away from the fixed teeth 6, with the eccentric shaft 3 as the fulcrum, due to the crushing load and the weight of the swing jaw 4. In other words, under normal circumstances, the swing jaw 4 tries to swing so that the toggle seat 25a is pressed against the toggle plate 24. However, due to the inertia generated in the lower part of the swing jaw 4 in response to the swinging of the upper part of the swing jaw 4, the lower part of the swing jaw 4 may swing in a direction that moves it closer to the fixed teeth 6. In this case, the toggle seat 25a moves away from the toggle plate 24, so if the hydraulic cylinder 15 is not provided, the toggle plate 24 may fall off the toggle seat 25a. To prevent this, the hydraulic cylinder 15 applies a tensile force to the swing jaw 4 in a direction away from the fixed teeth 6, so that the toggle plate 24 is always pressed against the toggle seat 25a. This prevents the toggle plate 24 from falling off the toggle seat 25a.

[0034] However, the fact that the toggle plate 24 is always pressed against the toggle sheet 25a means, in other words, that a frictional force is always generated between the toggle sheet 25a and the toggle plate 24 when the swing jaw 4 is oscillating. The generation of frictional force leads to a decrease in energy efficiency. Therefore, it is preferable that the magnitude of the generated frictional force be as small as possible. Accordingly, during the operation of the oscillating crusher 1, the hydraulic cylinder 15 is set to apply the weakest possible tensile force to the swing jaw 4, while ensuring that the toggle plate 24 does not fall off the toggle sheet 25a. Specifically, the hydraulic cylinder 15 is controlled to reach a target pressure for applying the aforementioned weak tensile force, or to prevent the pressure from exceeding an upper limit.

[0035] Note that the contact structure between the toggle block 23 and the toggle plate 24, and the contact structure between the toggle plate 24 and the receiving block 25 are just examples, and a different contact structure from this embodiment can be adopted as long as it can absorb the difference in the direction of movement of the toggle block 23 and the receiving block 25.

[0036] As shown in Figure 2, the oscillating crusher 1 includes a control device 31, a pressure sensor 32, and an operation panel 33.

[0037] The control device 31 is a known computer equipped with a CPU, memory, storage, etc. The storage contains programs for controlling each part of the oscillating crusher 1. The CPU executes the programs, allowing the control device 31 to perform various functions. For example, the control device 31 can control the pressure supplied to the hydraulic cylinder 15 to adjust the tensile force acting on the swing jaw 4. Specifically, a pressure sensor 32 is placed in the flow path of the hydraulic fluid supplied to the hydraulic cylinder 15. The pressure sensor 32 detects the pressure of the hydraulic fluid and outputs it to the control device 31. As described above, the control device 31 performs feedback control so that the detected pressure value approaches a predetermined target value. In other words, according to the difference between the detected pressure value output by the pressure sensor 32 and the target value, the control device 31 controls the electromagnetic valve provided in the flow path that supplies hydraulic fluid to the hydraulic cylinder 15 to bring the difference closer to zero. The target value may change depending on the situation, but the control is made so that the target value does not exceed the upper limit value described later.

[0038] The control panel 33 is a device used by the operator to operate the oscillating crusher 1. The control panel 33 is equipped with various buttons and a display. The operator can give various instructions to the oscillating crusher 1 by operating the buttons. The control panel 33 outputs a signal to the control device 31 corresponding to the instructions given by the operator. For example, if the operator operates the control panel 33 to instruct the oscillating crusher 1 to stop, a signal indicating the stopping of the oscillating crusher 1 is transmitted from the control panel 33 to the control device 31. The control device 31 receives this signal and decides to stop the operation of the oscillating crusher 1. In addition, if an abnormality is detected by a sensor installed in the oscillating crusher 1, the control device 31 also decides to stop the operation of the oscillating crusher 1.

[0039] Next, referring to Figures 4 and 5, we will explain the control for stopping the swinging of the swing jaws 4 of the oscillating crusher 1 in a short amount of time when stopping the operation of the oscillating crusher 1.

[0040] When stopping the operation of the oscillating crusher 1, the prime mover supplying power to the eccentric shaft 3 is stopped first. Here, since the flywheel 12 is provided on the opposite side of the eccentric shaft 3, the inertial force tends to be strong. As a result, the time it takes for the swing jaw 4 to stop swinging tends to be longer. Furthermore, even if the flywheel 12 is not provided, the time it takes for the swing jaw 4 to stop swinging may also be longer depending on the shape and size of the movable parts of the oscillating crusher 1, or the type of sheave.

[0041] For example, the operation of the oscillating crusher 1 may be stopped for routine maintenance or to address any malfunctions. In this case, the longer the time it takes for the swinging jaws 4 to stop oscillating, the lower the operator's waiting time and the operating rate of the oscillating crusher 1 will be. Therefore, it is preferable to stop the swinging jaws 4 from oscillating in a short amount of time.

[0042] For example, one possible method is to install a new brake to quickly stop the vibration of the swing jaw 4. However, this method would require the installation of new brake components such as brake pads and brake calipers. Furthermore, it would require the installation of a new actuator to operate the brake caliper. Consequently, the cost of the oscillating crusher 1 would increase.

[0043] In contrast, the oscillating crusher 1 of this embodiment can stop the swinging of the swing jaw 4 in a short time using existing components without providing a brake member or a dedicated actuator for braking. Specifically, the control device 31 performs the process shown in the flowchart of Figure 4.

[0044] As described above, the control device 31 decides to stop operation when it receives an instruction from the operator to stop operation or when it detects an abnormality in the oscillating crusher 1 (S101). Subsequently, the control device 31 performs a process to stop the prime mover, etc. (S102).

[0045] Next, the control device 31 stops the pressure control of the hydraulic cylinder 15 while the oscillating crusher 1 is in operation and raises the pressure of the hydraulic cylinder 15 to the brake value (S103). In other words, the pressure control during operation and the pressure control after deciding to stop operation are clearly different. Here, in the pressure control of the hydraulic cylinder 15 during operation, as described above, the hydraulic cylinder 15 is feedback controlled to approach a predetermined target value. Also, as shown in Figure 5, an upper limit is set for the pressure during operation, and the pressure of the hydraulic fluid supplied to the hydraulic cylinder 15 during operation is below this upper limit.

[0046] On the other hand, in pressure control after deciding to stop operation, the control device 31 increases the hydraulic fluid supplied to the hydraulic cylinder 15 to the brake value. The brake value is a pressure significantly higher than the upper limit of the pressure control during operation. More specifically, the brake value is preferably greater than 1.5 times the upper limit, and more preferably greater than 2 times the upper limit. Therefore, the control device 31 needs to perform different pressure control than during operation, for example, by releasing or changing the upper limit of the pressure control.

[0047] When the pressure in the hydraulic cylinder 15 reaches the brake value, the force exerted by the extension and contraction of the tension rod 15a of the hydraulic cylinder 15 increases, resulting in a significantly greater pulling force from the hydraulic cylinder 15 onto the swing jaw 4. Hereinafter, the pulling force of the hydraulic cylinder 15 onto the swing jaw 4 will be referred to as the "tensile force of the hydraulic cylinder 15." The tensile force of the hydraulic cylinder 15 when the pressure is at the brake value is significantly greater than the tensile force of the hydraulic cylinder 15 during operation. The tensile force of the hydraulic cylinder 15 during operation is, for example, the tensile force of the hydraulic cylinder 15 when the pressure of the hydraulic cylinder 15 is set to the upper limit. If no upper limit is set, it may also be the tensile force when the average or maximum pressure from the start to the stop of operation is applied to the hydraulic cylinder 15.

[0048] As the tensile force of the hydraulic cylinder 15 increases compared to during operation, the support block 25 is pressed against the toggle plate 24 with greater force than during operation. This increases the pushing force between the support block 25 and the toggle plate 24, thus increasing the frictional force generated between the toggle plate 24 and the support block 25. As a result, the resistance associated with the swinging of the swing jaw 4 increases. In other words, the energy required for the swinging of the swing jaw 4 can be increased. Therefore, the swinging of the swing jaw 4 can be stopped in a shorter time.

[0049] As described above, during the operation of the oscillating crusher 1, it is preferable to minimize the frictional force as much as possible while preventing the toggle plate 24 from falling off. In general, frictional force leads to wear of components and should therefore be reduced as much as possible. In contrast, in this embodiment, the frictional force that should be reduced is deliberately and actively utilized to stop the oscillation of the swing jaw 4 in a short time.

[0050] Furthermore, in the first example in Figure 5, after deciding to stop the operation of the oscillating crusher 1, the pressure of the hydraulic cylinder 15 is adjusted to the brake value, and then the pressure of the hydraulic cylinder 15 is maintained at the brake value. However, this control is just one example, and as shown in the second example in Figure 5, the state of adjusting the pressure of the hydraulic cylinder 15 to the brake value and the state of adjusting the pressure of the hydraulic cylinder 15 to a pressure lower than the brake value may be repeated alternately. In any case, by making the pressure of the hydraulic cylinder 15 greater than the upper limit for at least a short period of time between deciding to stop the operation of the oscillating crusher 1 and the stopping of the swing jaw 4's oscillation, the effect of stopping the swing jaw 4's oscillation in a short time can be achieved.

[0051] Next, the control device 31 determines whether or not the swinging of the swing jaw 4 has stopped (S104). The control device 31 determines that the swinging of the swing jaw 4 has stopped when a predetermined threshold time has elapsed. The threshold time can be determined, for example, by conducting an experiment to calculate an approximate value of the time it takes for the swinging of the swing jaw 4 to stop, and then adding a margin to that approximate value. If a sensor for detecting the swinging of the swing jaw 4 is provided, the detection value of that sensor may be used to determine whether or not the swinging of the swing jaw 4 has stopped.

[0052] When the control device 31 determines that the swing of the swing jaw 4 has stopped, it reduces the pressure of the hydraulic cylinder 15 to 0 (S105). As a result, the frictional force between the receiving block 25 and the toggle plate 24 becomes 0 or very small, allowing the swing jaw 4 to be stopped at a position where its movement and posture are stable. Hereinafter, this position of the swing jaw 4 will be referred to as the stable position. When the swing jaw 4 is in the stable position, the gap G1 between the fixed teeth 6 and the movable teeth 7 is at its narrowest. Therefore, the stable position is a suitable position for performing maintenance, etc. Accordingly, by reducing the pressure of the hydraulic cylinder 15 to 0, maintenance, etc. can be performed appropriately.

[0053] The flowchart shown in the above embodiment is just an example, and some processes may be omitted, some processes may be modified, or new processes may be added. For example, steps S104 and S105 are not mandatory and can be omitted. Also, the process in step S103 may be started after the prime mover has completely stopped, or it may be started before the prime mover has stopped.

[0054] (Feature 1) As described above, the oscillating crusher 1 of this embodiment comprises a fixed tooth 6, a movable tooth 7, a swing jaw 4, a hydraulic cylinder 15, a receiving block 25, a toggle plate 24, and a control device 31. The movable tooth 7 is positioned with a gap G1 between it and the fixed tooth 6. The swing jaw 4 is provided with the movable tooth 7, and when a driving force is transmitted, it oscillates, causing the movable tooth 7 to swing. During operation, the hydraulic cylinder 15 pulls the swing jaw 4 away from the fixed tooth 6. The receiving block 25 is provided on the swing jaw 4. The toggle plate 24 is in contact with the receiving block 25, and friction occurs between the swing jaw 4 and the receiving block 25 as the swing jaw 4 oscillates, and the swing jaw 4 is pressed against the receiving block 25 when the hydraulic cylinder 15 pulls the swing jaw 4. The control device 31 controls the tensile force of the hydraulic cylinder 15 to be greater than the tensile force during operation for at least a short period of time between deciding to stop operation and the swinging of the swing jaw 4 stopping.

[0055] The friction between the receiving block 25 and the toggle plate 24 resists the swinging motion of the swing jaw 4, allowing the inertial motion of the swing jaw 4 to be stopped quickly. In particular, by using the hydraulic cylinder 15, which is an actuator used during the operation of the oscillating crusher 1, the frictional force between the receiving block 25 and the toggle plate 24 can be increased, allowing the inertial motion of the swing jaw 4 to be stopped quickly while keeping costs down.

[0056] (Feature 2) In the oscillating crusher 1 of this embodiment, the tensile force of the hydraulic cylinder 15 increases in accordance with the change in the set value of the hydraulic cylinder 15. The control device 31 stores the upper limit of the set value of the hydraulic cylinder 15 during operation. For at least a short period of time between deciding to stop operation and the oscillating of the swing jaw 4 stopping, the control device 31 controls the set value of the hydraulic cylinder 15 to be greater than 1.5 times the upper limit during operation.

[0057] This allows the inertial motion of the swing jaw 4 to be stopped in an even shorter time.

[0058] (Feature 3) In the oscillating crusher 1 of this embodiment, the receiving block 25 and the toggle plate 24 are part of the inter-tooth adjustment mechanism 20 that adjusts the distance G1 between the fixed teeth 6 and the movable teeth 7.

[0059] The receiving block 25 and toggle plate 24 are not dedicated components for stopping the inertial motion of the swing jaw 4. Therefore, not only the actuator but also the rubbing components can be those of an existing oscillating crusher 1.

[0060] (Feature 4) In the oscillating crusher 1 of this embodiment, the control device 31 controls the tensile force of the hydraulic cylinder 15 to 0 at the timing when it determines that the oscillating of the swing jaw 4 has stopped.

[0061] This allows the swing jaw 4 to be stopped in a stable position after its inertial motion has ceased.

[0062] The oscillating crusher 1 can be realized by combining the above-mentioned features 1 to 4, for example, as shown below. The same applies to the method. [Configuration 1] Oscillating crusher 1 having feature 1 [Configuration 2] A rocking crusher 1 having the above configuration plus feature 2. [Configuration 3] A rocking crusher 1 having the above configuration in addition to configuration 1 or 2. [Configuration 4] A rocking crusher 1 having one of Configurations 1 to 3 in addition to feature 4.

[0063] Although preferred embodiments of this application have been described above, the above configuration can be modified as follows, for example.

[0064] The operator may perform at least part of the process shown in the flowchart of Figure 4. For example, if the pressure of the hydraulic cylinder 15 can be manually set using the control panel 33, the operator may operate the control panel 33 after deciding to stop the operation to raise the pressure of the hydraulic cylinder 15 to the brake value. Then, if the operator determines, for example, by visual inspection that the swing jaw 4 has stopped, they may operate the control panel 33 to reduce the pressure of the hydraulic cylinder 15 to 0. This makes it possible to achieve the above-described effects without using the control of the control device 31.

[0065] In the above embodiment, when the operation of the oscillating crusher 1 is stopped, the pressure of the hydraulic cylinder 15 is controlled to match the brake value each time. Alternatively, the pressure of the hydraulic cylinder 15 may be controlled to match the brake value only when certain conditions are met. These conditions may include, for example, pre-set settings or instructions from the operator when the operation is stopped.

[0066] In the above embodiment, the swing jaw 4 is pulled using a hydraulic cylinder. When using a hydraulic cylinder, the set value is pressure, and changing the pressure changes the tensile force of the hydraulic cylinder 15. Alternatively, the swing jaw 4 may be pulled using other actuators such as an electric cylinder. In this case, the set value is, for example, the current value or the driving force. Depending on the actuator used, it may be the case that the tensile force increases as the set value decreases. In this case, after deciding to stop the operation of the oscillating crusher 1, the control device 31 makes the set value lower than the lower limit of the set value during operation. This makes it possible to increase the tensile force compared to during operation.

[0067] In the above embodiment, the receiving block 25 and toggle plate 24, which are components of the interdental adjustment mechanism 20, were designated as the first member and the second member, respectively. Alternatively, the inertial motion of the swing jaw 4 may be stopped using components other than the receiving block 25 and toggle plate 24, as long as friction occurs between the first member and the second member due to the swinging of the swing jaw 4, and the first member and the second member press against each other when the actuator pulls the swing jaw 4.

[0068] In the above embodiment, the fixed tooth (first tooth) 6 is fixedly provided, and the movable tooth (second tooth) 7 is pivotable relative to the fixed tooth 6. Alternatively, both the first tooth and the second tooth may be pivotable.

[0069] The wedge mechanism 22 can be omitted, and the configuration can be changed so that the rod of the inter-tooth adjustment cylinder 21 directly pushes the toggle block 23. In this case, the inter-tooth adjustment cylinder 21 should be positioned to extend and retract in a direction parallel to the sliding direction of the toggle block 23.

[0070] The functions of the elements disclosed herein can be performed using circuits or processing circuits, including general-purpose processors, dedicated processors, integrated circuits, ASICs (Application Specific Integrated Circuits), conventional circuits, and / or combinations thereof, configured or programmed to perform the disclosed functions. A processor is considered a processing circuit or circuit because it includes transistors and other circuits. In this disclosure, a circuit, unit, or means is hardware that performs the enumerated functions, or hardware programmed to perform the enumerated functions. The hardware may be hardware disclosed herein, or other known hardware that is programmed or configured to perform the enumerated functions. If the hardware is a processor, which is considered a type of circuit, then the circuit, means, or unit is a combination of hardware and software, and the software is used to configure the hardware and / or the processor. [Explanation of symbols]

[0071] 1. Oscillating crusher 4. Swing jaw (oscillating member) 6. Fixed teeth (first teeth) 7. Movable tooth (second tooth) 15. Hydraulic cylinder (actuator) 23 Toggle Blocks 24 Toggle plate (second component) 25 Receiving block (first member) 31 Control device

Claims

1. The first tooth and, A second tooth is positioned at a distance from the first tooth, A swinging member is provided with the second tooth, and swings when a driving force is transmitted, causing the second tooth to swing. During operation, an actuator pulls the oscillating member away from the first tooth, The first member provided on the rocking member, A second member is in contact with the first member, and friction occurs between the second member and the first member as the oscillating member oscillates, and the second member is pressed against the first member as the actuator pulls the oscillating member, A control device that controls the tensile force of the actuator to be greater than the tensile force during operation for at least a short period of time between deciding to stop operation and the oscillating member stopping. A rocking crusher equipped with this feature.

2. A rocking crusher according to claim 1, The tensile force of the actuator increases in response to a change in the set value of the actuator. The control device stores the upper limit of the set value during the operation of the actuator. The control device controls the actuator to make the set value greater than 1.5 times the upper limit value during operation, for at least a short period of time between deciding to stop operation and the oscillating member stopping.

3. A rocking crusher according to claim 1, The first member and the second member are part of an inter-tooth adjustment mechanism for adjusting the distance between the first tooth and the second tooth, in an oscillating crusher.

4. A rocking crusher according to claim 1, The control device controls the actuator to reduce its tensile force to zero at the moment it determines that the oscillation of the oscillating member has stopped, in this oscillating crusher.

5. A method for stopping the operation of an oscillating crusher, The aforementioned oscillating crusher is, The first tooth and, A second tooth is positioned at a distance from the first tooth, A swinging member is provided with the aforementioned second teeth, and swings when a driving force is transmitted, causing the second teeth to swing. During operation, an actuator pulls the oscillating member away from the first tooth, The first member provided on the rocking member, A second member is in contact with the first member, and friction occurs between the second member and the first member as the oscillating member oscillates, and the second member is pressed against the first member as the actuator pulls the oscillating member, Equipped with, At least for a brief moment when stopping the operation of the aforementioned oscillating crusher, A stopping method that makes the tensile force of the actuator greater than the tensile force during operation.

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