Crushing plant for working inert material with mobile loading unit

Abstract

The present invention relates to a crushing plant (1) for working inert material with mobile loading unit, the plant (1) comprising a frame (2) which develops substantially along a direction of development (B-B) between a front portion (2a) and a rear portion (2b), a loading unit (4) connected to the frame (2) and adapted to receive inert material and to feed the inert material to a crushing unit (6), a crushing unit (6) associated with the loading unit (4) to receive inert material and configured to perform a working phase of the inert material and to feed the worked inert material to a conveyor belt (7), a conveyor belt (7) connected to the frame (2) and configured to receive and transport the worked inert material, and wherein the loading unit (4) is movable with respect to the frame (2) from / towards the front portion (2a), the plant (1) comprises a movement system (11) associated with the frame (2) and with the loading unit (4), the movement system (11) being configured to move the loading unit (4) with respect to the frame (2) at least from / towards the front portion (2a) so as to vary a height of the plant (1).

Description

Technical Field

[0001] The present invention relates to a crushing plant for working inert material with mobile loading unit, and therefore perfected. Specifically, the plant is adapted to receive inert material by means of a perfected and mobile loading unit, as well as to crush, sieve and eject such material. For example, the crushing plant is of the type distributed by the company RIMAC TECHNOLOGY SA under the name MOBY 1265 TRANSFORMER o MOBY 1180 TRANSFORMER o MOBY 1380 TRANSFORMER.Background Art

[0002] Crushing plants are known in the state of the art. Inert material crushing plants are, in particular, divisible into two categories of plants: mobile plants and stationary plants.

[0003] The known mobile crushing plants comprise a frame and transport means connected to the frame and defining a resting portion of the plant to the ground. The transport means are known per se and may comprise a set of tracks or tires to move the plant. The mobile crushing plants are then able to move independently, such as from a transport device to the work site.

[0004] On the other hand, the known stationary crushing plants do not comprise transport means and the resting portion to the ground is stationary and does not allow the movement thereof. Stationary crushing plants can only be moved and positioned at the work site by means of an external transport device and not independently. Known plants comprise at least one material loading unit, generally a hopper, and one crushing unit coupled together and attached to the plant frame. In detail, the hopper is placed upstream of the crushing unit along one direction of development of the plant. Examples of crushing units may be a jaw crusher, a bump crusher and a cone crusher.

[0005] More specifically, the hopper is configured to receive the material to be worked and crushed and to convey the material to be worked to the crushing unit located downstream of the loading unit.

[0006] The crushing unit is configured to receive the material to be worked from the hopper, crush the material to be worked resulting in a worked material, and convey the worked material to a conveyor belt connected to the frame. Normally, the crushing unit is placed between the hopper and the conveyor belt along the direction of development of the plant.

[0007] The known loading unit, preferably a hopper, is stationary with respect to the frame and placed in the proximity of the crushing unit in a raised position with respect to the latter. In fact, the loading unit is configured to feed inert material to the crushing unit substantially from above, therefore, the known loading unit is placed on top of the crushing unit.

[0008] One drawback from the prior art is that, because the loading unit is stationary with respect to the frame and placed on top of the crushing unit, the loading unit hinders operators' access to the crushing unit and thus reduces the possibility to perform maintenance or other similar activities on the same.

[0009] The Applicant realized that, because the loading unit feeds material to the crushing unit from above, the loading unit is at a considerable height above the ground making it more difficult to move the plant. In fact, the height above the ground of the known plant with the loading unit constrained to the frame can reach and exceed three meters in height, thus making it difficult to transport the plant by road, for example, when the plant is placed and transported on a tractor-trailer truck.Description of the Invention

[0010] The Applicant has therefore discovered that, by reducing the overall height of the plant, it is possible to make a crushing plant easier to transport and move.

[0011] An additional object of this description is to provide a crushing plant that enables faster maintenance of the loading unit and of a crushing unit associated therewith. The aforementioned objects are achieved by the crushing plant with mobile loading unit according to claim 1.Brief Description of the Drawings

[0012] Some embodiments and aspects of the invention will be described below with reference to the attached drawings, provided for illustrative purposes only and therefore not limiting, wherein: Figures 1 and 2 are perspective views of a crushing plant in respective different configurations of use in accordance with this invention, Figure 3 is a side view of the plant in Figure 2, Figures 4-6 are side perspective views of the plant in Figure 2 in different configurations of use, Figures 7-9 are side perspective views of a detail of a plant in different configurations of use in accordance with this invention, Figure 10 is a side view of a further detail of the plant in Figure 2 in different configurations of use. Embodiments of the Invention

[0013] In accordance with this description and the attached figures, reference numeral 1 denotes a plant for working inert material, particularly a crushing plant with mobile loading unit.Crushing plant

[0014] Specifically, the crushing plant 1 is adapted to crush and screen inert materials or waste materials. For example, materials may comprise construction and demolition materials, excavated soil and rocks, stones, sand, asphalt, gravel, steel mill slag, plastics, paper, wood, glass.

[0015] The crushing plant 1 comprises a frame 2 and may comprise transport means 3 connected to the frame 2. The crushing plant 1 has a resting portion 3a which can be defined at least partly by the transport means 3. In detail, the crushing plant 1 is mobile and configured to move in a work environment when in use. The transport means 3 are configured to move the plant and may comprise a set of tracks or a set of tires that define the resting portion 3a of the crushing plant. In other words, the crushing plant 1 is mobile and configured to contact the ground at the resting portion 3a.

[0016] The crushing plant 1 has a direction of development B-B. The main direction of development B-B of the plant can be a linear direction or a curve of any shape, e.g. L-shaped. In detail, the frame 2 extends along the main direction of development B-B of the plant.Loading unit

[0017] The crushing plant 1 comprises, in addition, a loading unit 4 connected to the frame 2 and configured to receive material, especially material to be worked / processed. Specifically, the loading unit 4 comprises a hopper 5 and may, in addition, comprise a respective screening unit associated with the hopper 5. In detail, the loading unit 4 is configured to receive the material to be worked from a feeding unit. The feeding unit may comprise a machine for surface excavation works, transporting and unloading inert material such as, e.g., a bulldozer, a mechanical shovel or an excavator.

[0018] The screening unit of the loading unit 4 can be adapted to a phase of first sieving of the material to be worked, thus separating a first fraction from the material to be worked.Crushing unit

[0019] The crushing plant 1 comprises a crushing unit 6 connected to the frame 2. The crushing unit 6 is configured to receive at input the material to be worked / processed or sieved material and to send at output the worked / processed material. In detail, the crushing unit 6 is configured to carry out a phase of receiving the material to be worked or sieved, preferably from the loading unit 4, and a phase of conveying and feeding the worked material to one or more conveyor belts. The crushing unit 6 is configured to carry out a work process or a phase on the material to be worked to obtain a worked material. The working phase comprises one or more of the sub-phases: reducing an average granular size of the material received at input, carrying out a second sieving of the material received at input. Conveyor belt

[0020] The crushing plant 1 comprises a conveyor belt 7 connected to the frame 2. The conveyor belt 7 mainly extends along a longitudinal direction A-A between an input portion 7a and an opposite evacuation portion 7b. The input portion 7a is adapted to receive material, especially material worked by the crushing unit 6. The evacuation portion 7b is adapted to evacuate the material from the crushing plant 1 and to convey the material at output. The conveyor belt 7 is configured to move the material from the input portion 7a to the evacuation portion 7b. According to one aspect, the conveyor belt 7 is switchable between a working configuration and a transport configuration. In particular, the conveyor belt 7 comprises sections 14, 15 connected to each other in a rotatable manner, e.g., by means of pivoting elements. For example, the sections 14, 15 are connected by means of pins defining an axis of rotation around which at least one of the sections is rotatable. In more detail, in the working configuration, the sections 14, 15 are arranged substantially aligned along a straight longitudinal direction, such as e.g. shown in Figure 2. In the transport configuration, the sections 14, 15 are close to each other, thus reducing a lateral extension of the conveyor belt 7 with respect to the frame 2, as e.g. shown in Figure 1. In other words, the overall dimensions of the conveyor belt 7 laterally to the frame 2 is reduced in the passage from the working configuration to the transport configuration to facilitate the movement of the crushing plant 1.

[0021] In one embodiment, the loading unit, the crushing unit and the conveyor belt 7 are placed along the direction of development B-B of the plant. In detail, the loading unit 4 is located upstream of the crushing unit 6. The conveyor belt is positioned along the direction of development B-B downstream of the crushing unit. Normally, the crushing unit is placed between the loading unit and the conveyor belt along the direction of development B-B of the plant 1.Driving unit

[0022] According to one aspect, the crushing plant 1 comprises a driving unit 10 associated with the frame 2 and with the transport means 3. The driving unit 10 is configured to drive the transport means for the movement of the plant.

[0023] In detail, the driving unit 10 is associated with the loading unit 4, with the crushing unit 6 and with the conveyor belt 7. The driving unit 10 is configured to operate one or more of the loading unit, the crushing unit or the conveyor belt.Magnetic separator

[0024] In one embodiment, the crushing plant 1 comprises a separator 8 associated with the conveyor belt and connected to the frame 2. Specifically, the separator 8 is arranged along the main direction of development B-B of the plant 1 downstream of the crushing unit 6. The separator 8 is configured to detect and remove unwanted materials from the worked material. For example, the separator 8 is of the type of a magnetic separator and is suitable for the identification, detection and removal of the metallic material from the worked material.

[0025] In detail, the separator 8 is positioned in the proximity of the conveyor belt 7 so as to analyze the worked material as it is transported from the input portion 7a to the evacuation portion 7b of the conveyor belt. More specifically, the separator is positioned facing a transport surface of the conveyor belt. The separator can be at a predefined minimum distance from the transport surface, wherein the minimum distance is selected so as to optimize the process of detecting and removing unwanted material from the flow of worked material.Spraying system

[0026] According to one aspect, the crushing plant 1 comprises a spraying system 9 associated with the loading unit 4. The spraying system 9 is connected to the loading unit, particularly to the hopper 5 or to the crushing unit 6 and is configured to reduce the volatility of a volatile component of the material to be worked. In detail, the spraying system 9 is suitable for the emission of water mist toward the material to be worked so as to reduce the volatility of the volatile component of the material to be worked.Control unit

[0027] According to one aspect, the crushing plant 1 comprises a control unit in signal communication with one or more of the loading unit 4, the crushing unit 6, the driving unit 10, the conveyor belt 7, the transport means 3, the separator 8 or the spraying system 9. In detail, the control unit is configured to command the loading unit 4 to carry out a phase of feeding the inert material to be worked to the crushing unit 6. In more detail, the control unit is in signal communication with the screening unit to command the screening unit to carry out a phase of first sieving of the material to be worked, thus separating a first fraction from the material to be worked.

[0028] The control unit can also be configured to command the spraying system 9 to carry out a phase of emitting a mist component, such as water, toward the material to be worked so as to reduce the volatility of the volatile component of the material to be worked.

[0029] In addition, the control unit is configured to command the crushing unit 6 to carry out one or more phases of: receiving the material to be worked or sieved, preferably from the loading unit 4, carrying out a work process on the material to be worked to obtain a worked material, sending the worked material to one or more conveyor belts.

[0030] The phase of carrying out a work process comprises one or more of the sub-phases: reducing an average granular size of the material received at input, making a second sieving of the material received at input.

[0031] The control unit can also be configured to command the conveyor belt 7 to carry out one or more phases of: receiving worked material, preferably from the crushing unit, moving the worked material from the input portion 7a to the evacuation portion 7b.

[0032] According to one aspect, the control unit is configured to command the separator 8 to carry out one or more phases of: analyzing the worked material, detecting unwanted material in the worked material, preferably detecting a metallic material, removing the unwanted material from the worked material.

[0033] According to a further aspect, the control unit is configured to command the driving unit 10 to carry out a phase of operating the transport means 3 and moving the crushing plant 1.Crushing plant for working inert material with mobile loading unit

[0034] The crushing plant with mobile loading unit comprises a frame 2 which develops substantially along the direction of development B-B between a front portion 2a and a rear portion 2b.

[0035] In detail, the loading unit 4 is connected to the frame 2 and is movable with respect to the frame. The loading unit 4 is adapted to receive inert material and to feed the same inert material to the crushing unit 6. In particular, the loading unit 4 is connected to the frame 2 in the proximity of the rear portion 2b of the frame 2 and is movable with respect to the same rear portion 2b.

[0036] Specifically, the crushing unit 6 is connected to the frame 2 downstream of the loading unit 4 along the direction of development B-B. The crushing unit 6 is associated with the loading unit 4 to receive the inert material. The crushing unit 6 is particularly configured to perform a working phase of the inert material. In addition, the crushing unit 6 is adapted to feed the worked inert material to a conveyor belt 7 connected to the frame 2 and arranged downstream of the crushing unit 6 along the direction of development B-B.

[0037] In detail, the conveyor belt 7 is connected to the frame 2 in the proximity of the front portion 2a of the frame 2. The conveyor belt 7 is configured to receive and transport the worked material. More specifically, the conveyor belt 7 is configured to eject the worked material from the plant. In other words, during use, the conveyor belt 7 receives the inert material from the crushing unit 6 and transports such inert material, which is ejected from the plant. In detail, the conveyor belt 7 is configured to receive the inert material at the input portion 7a and to transport the material to and up to the evacuation portion 7b to eject the material from the plant.

[0038] The loading unit 4 of the crushing plant 1 is movable with respect to the frame 2 to and from the front portion 2a and / or to and from the rear portion 2b. In detail, the loading unit 4 is movable close to / away from the front portion 2a and close to / away from the rear portion 2b of the frame 2. The loading unit 4 can be moved with respect to the frame 2 along or parallel to the direction of development B-B. In more detail, the movement of the loading unit 4 with respect to the frame 2 comprises a component parallel to the direction of development B-B, preferably a horizontal component. The loading unit 4 can be moved horizontally to and from the front portion and / or the rear portion. In detail, the movement of the loading unit can be horizontal.

[0039] The plant 1 also comprises a movement system 11 associated with the frame 2 and with the loading unit 4. The movement system 11 is configured to move the loading unit 4 with respect to the frame 2 at least from and to the front portion 2a of the frame 2 or from and to the rear portion 2b of the frame 2, especially so as to vary a height of the plant 1. In other words, the movement system 11 is configured to move the loading unit 4 with respect to the frame 2 close to and away from the front portion 2a or the rear portion 2b of the frame 2. The movement system 11 is configured to move the loading unit 4 horizontally.

[0040] In one embodiment, the loading unit 4 is movable close to / away from the frame 2 along a transverse direction C-C to the direction of development B-B. The movement system 11 is configured to move the loading unit 4 with respect to the frame 2 along the transverse direction C-C to the direction of development B-B. In other words, a distance along the transverse direction C-C between the loading unit 4 and the frame 2 is variable by moving the loading unit 4. The transverse direction C-C can be vertical and the loading unit 4 can be configured to move vertically.

[0041] For example, Figures 7 to 9 show the loading unit of the plant 1 at different respective heights and respective distances from the frame 2 and from the front portion 2a.

[0042] In more detail, the movement system 11 is configured to move the loading unit 4 close to and away from the crushing unit 6 at least along or parallel to the direction of development B-B and / or along the transverse direction C-C. According to one aspect, the movement system 11 is configured to move the loading unit either from and to the front or rear portion 2a, 2b or along the transverse direction C-C. In particular, moving the loading unit 4 vertically allows the crushing unit to be connected to the frame so that it is farther away from the conveyor belt and / or from the resting portion, and thus from the ground, than the systems of known type. Advantageously, connecting the crushing unit to the frame in a raised position by height compared with known systems makes it easier to maintain the plant and to reduce the possibility of inert material damaging the plant when transferred from the loading unit to the crushing unit and from the crushing unit to the conveyor belt.

[0043] According to one aspect, the loading unit 4 is switchable among a plurality of positions comprising at least one lowered position and one raised position. For example, Figure 4 shows a crushing plant 1 with the loading unit 4 placed in the lowered position, while Figure 6 shows the same plant with the loading unit placed in the raised position.

[0044] In the lowered position the loading unit 4 and the frame 2 are placed at a first distance, particularly defined along the transverse direction C-C. In detail, in the lowered position, the loading unit 4 and the crushing unit 6 are spaced apart from each other, particularly along the direction of development B-B.

[0045] In the raised position, the loading unit 4 and the frame 2 are at a second distance, preferably defined along the transverse direction C-C. The second distance is greater than the first distance. In detail, in the raised position, the loading unit 4 and the crushing unit 6 are moved close to each other. More specifically, in the raised position, the loading unit 4 is in the proximity of the crushing unit 6 and adapted to feed the inert material to such a crushing unit 6, such as e.g. shown in Figure 6 or Figure 7.

[0046] By moving the loading unit 4 with respect to the frame 2, the overall plant height can be reduced at least in the proximity of the loading unit. By moving the loading unit from the raised position to the lowered position, the plant height can be reduced by 0.6m-1m.

[0047] In one embodiment, the loading unit 4 is movable close to / away from the front and / or rear portions 2a, 2b when moving among the plurality of positions.

[0048] In more detail, when moving between the lowered position and the raised position, the loading unit 4 moves close to / away from the front portion 2a of the frame 2. When displacing from the lowered position to the raised position, the loading unit 4 moves close to the front portion 2a of the frame 2. Conversely, when displacing from the raised position to the lowered position, the loading unit 4 moves away from the front portion 2a of the frame 2.

[0049] According to one aspect, the loading unit 4 is movable along the transverse direction C-C when moving among the plurality of positions. In detail, the distance between the frame and the loading unit along the transverse direction C-C increases in the passage from the lowered position to the raised position of the loading unit. Conversely, the distance between the frame and the loading unit along the transverse direction C-C is reduced in the passage from the raised position to the lowered position of the loading unit.

[0050] According to one aspect, the loading unit 4 is movable horizontally and vertically when moving among the plurality of positions. In particular, the loading unit 4 is configured to move vertically and horizontally when moving among the plurality of positions.

[0051] The movement system 11 can be configured to move the loading unit 4 along a single trajectory when moving from the lowered position to the raised position and vice versa. In detail, the single trajectory of the loading unit has a vertical component and a horizontal component. More specifically, in the passage from the lowered position to the raised position and in the passage from the raised position to the lowered position, the loading unit is configured to follow the same single trajectory. In detail, the single trajectory is a linear trajectory. The trajectory can be straight.

[0052] According to one aspect, the movement system 11 comprises a kinematic chain. In more detail, the movement system 11 comprises a support 12 attached to the loading unit 4. In detail, the support 12 is connected to the hopper 5, preferably to a base 18 of the hopper 5. The support 12 is connected to the hopper 5 to be locked together with the hopper 5 when displacing the loading unit 4 among the plurality of positions.

[0053] In one embodiment, the movement system 11 comprises a driven member 13 constrained to the frame 2 and connected to the support 12. In detail, the driven member 13 is constrained to the frame 2 so as to have just one degree of freedom with respect to the frame 2. The driven member 13 is movable with respect to the frame 2 close to / away from the rear portion 2b. In detail, the driven member 13 moves close to the rear portion 2b of the frame 2 when displacing the loading unit 4 from the lowered position to the raised position. Conversely, the driven member 13 moves away from the rear portion 2b of the frame 2 when displacing the loading unit 4 from the raised position to the lowered position.

[0054] In addition, the movement system 11 comprises an actuator 16 constrained to the driven member 13. The actuator 16 is configured to move the driven member 13 so as to cause the loading unit 4 to move among the plurality of positions. The actuator 16 is configured to move the driven member 13 close to and away from the rear portion 2b of the frame 2 and to cause the loading unit 4 to move among the plurality of positions.

[0055] Specifically, the actuator 16 may comprise one or more cylinders, each cylinder is connected to the driven member 13 and suitable for the linear movement of the driven member 13. The cylinder may be of the pneumatic or hydraulic type. The cylinder is of a type known to the technician in the field. In detail, the cylinder rod is attached to the driven member 13 and the cylinder body is connected to the frame 2 or to the crushing unit 6. Specifically, when operated and in the extended position, the one or more cylinders are configured to move the driven member to the rear portion of the frame and to cause the loading unit to pass to the raised position.

[0056] According to one aspect, the hopper 5 of the loading unit 4 has an upper opening 17 adapted to receive the inert material and a base 18 adapted to connect with the frame 2. Specifically, when the loading unit 4 is in the raised position, the opening 17 of the hopper 5 is placed at a maximum distance from the resting portion 3a of the plant 1. When the loading unit 4 is in the lowered position, the opening 17 of the hopper 5 is placed at a minimum distance from the resting portion 3a of the plant 1. More specifically, when the loading unit is in the lowered position, the system has a minimum overall height. Conversely, when the loading unit is in the raised position, the system has a maximum overall height.

[0057] In one embodiment, the plant 1 comprises a ladder 19 connected to the loading unit 4 or to the crushing unit 6. In detail, the ladder 19 comprises an upper portion 20 and a lower portion 21. The upper portion 20 of the ladder is connected to the loading unit 4 and the lower portion 21 of the ladder is connected to the crushing unit 6 and / or to the frame 2. In more detail, when the loading unit 4 is in the raised position, the upper portion 20 and the lower portion 21 of the ladder 19 are moved close together and arranged so as to align respective handrails or respective steps so that a user can employ the ladder 19. When the loading unit 4 is in the lowered position, the upper portion 20 and the lower portion 21 of the ladder 19 are moved away from each other. In addition, in the passage of the loading unit 4 from the raised position to the lowered position, the lower portion 21 of the ladder 19 can be moved away from the ground so as to hinder or prevent the use of the ladder by a user when the lower and upper portions are not close together. Conversely, in the passage of the loading unit 4 from the lowered position to the raised position, the lower portion of the ladder can be moved close to the ground to facilitate the use thereof by a user.

[0058] In one embodiment, the plant 1 also comprises a control unit in signal communication with the movement system 11. The control unit is configured to command the movement system 11 for the movement of the loading unit 4 with respect to the frame 2 at least when moving close to / away from the front portion 2a or the rear portion 2b.

[0059] In addition, the control unit is configured to command the movement system 11 for the movement of the loading unit 4 with respect to the frame 2 along the transverse direction C-C, preferably vertically.

[0060] The control unit is configured to command the movement system 11 to move the loading unit among the plurality of positions, especially between the lowered position and the raised position.

[0061] The control unit is in signal communication with the actuator and configured to operate the actuator for the movement of the loading unit among the plurality of positions.

[0062] According to one aspect, the control unit is in signal communication with the loading unit 4, the crushing unit 6 and the conveyor belt 7.

[0063] In detail, the control unit is configured to carry out one or more phases of: commanding the movement system 11 for the movement of the loading unit 4 from the lowered position to the raised position and vice versa, commanding the loading unit 4 to feed inert material to the crushing unit 6, commanding the crushing unit 6 to receive inert material from the loading unit 4, work the inert material and feed the worked inert material to the conveyor belt 7, commanding the conveyor belt 7 to receive the worked inert material from the crushing unit 6 and eject the worked inert material.

[0064] According to one aspect, the crushing plant 1 comprises an additional conveyor belt 22 connected to the frame 2. In detail, the additional conveyor belt 22 is placed in the proximity of the rear portion 2b of the frame 2. In more detail, the additional conveyor belt 22 can be associated with the loading unit 4 or with the crushing unit 6 to receive inert material at input. The additional conveyor belt 22 is configured to move and eject the inert material fed to the additional belt from the loading unit 4 and / or from the crushing unit 6.

[0065] According to one aspect, as already described in relation to the conveyor belt 7, the additional conveyor belt 22 is also switchable between a respective transport configuration and a respective working configuration and may comprise respective sections.

[0066] In detail, the respective sections of the additional conveyor belt 22 are connected to each other in a rotatable manner to move close together by reducing a lateral extension of the additional conveyor belt. In addition, the sections of the additional conveyor belt 22 are configured to extend and substantially align along a respective direction of extension of the additional conveyor belt 22.

[0067] In one embodiment, the additional conveyor belt 22 is connected to the frame 2 in a rotatable manner and suitable for the rotation around a substantially vertical axis. The additional conveyor belt 22 is configured to rotate with respect to the axis and / or to the frame 2 to arrange itself at least partly laterally to the frame 2 or aligned along the direction of development B-B. In detail, the additional conveyor belt 22 can be arranged with its respective sections aligned along the direction of development B-B or arranged with its respective sections transverse to the direction of development B-B.

[0068] For example, Figure 4 shows the additional conveyor belt 22 in the respective transport configuration and substantially aligned along the direction of development B-B. Figure 5 shows the plant with the additional conveyor belt 22 in an intermediate configuration between the working configuration and the transport configuration and, in addition, rotated with respect to the frame 2 to be transverse to the direction of development and lateral to the frame. Figure 6 shows the plant with the additional conveyor belt 22 and the conveyor belt 7 in the working configuration. The additional conveyor belt 22 is shown in Figure 6 transverse to the direction of development B-B and arranged substantially laterally to the frame.

Claims

1. Crushing plant (1) for working inert material with mobile loading unit, the plant (1) comprising: a frame (2) which develops substantially along a direction of development (B-B) between a front portion (2a) and a rear portion (2b), a loading unit (4) connected to the frame (2) and adapted to receive inert material and to feed the inert material to a crushing unit (6), a crushing unit (6) associated with the loading unit (4) to receive inert material and configured to perform a working phase of the inert material and to feed the worked inert material to a conveyor belt (7), a conveyor belt (7) connected to the frame (2) and configured to receive and transport the worked inert material, and wherein: the loading unit (4) is movable with respect to the frame (2) from / towards the front portion (2a), the plant (1) comprises a movement system (11) associated with the frame (2) and with the loading unit (4), the movement system (11) being configured to move the loading unit (4) with respect to the frame (2) at least from / towards the front portion (2a) so as to vary a height of the plant (1).

2. Plant (1) according to the preceding claim, wherein the loading unit (4) is movable away from / towards the frame (2) along a transverse direction (C-C) which is transverse to the direction of development (B-B), and wherein the movement system (11) is configured to move the loading unit (4) with respect to the frame (2) along the transverse direction (C-C) which is transverse to the direction of development (B-B), optionally wherein the movement system (11) is configured to move the loading unit (4) towards / away from the crushing unit (6) at least towards / from the front portion (2a) and / or along the transverse direction (C-C).

3. Plant (1) according to any one of the preceding claims, wherein the loading unit (4) is switchable among a plurality of positions comprising at least: a lowered position wherein the loading unit (4) and the frame (2) are at a first distance, and optionally wherein, in the lowered position, the loading unit (4) and the crushing unit (6) are spaced apart from each other, a raised position wherein the loading unit (4) and the frame (2) are at a second distance, wherein the second distance is greater than the first, and optionally wherein, in the raised position, the loading unit (4) and the crushing unit (6) are close to each other.

4. Plant (1) according to the preceding claim, wherein the loading unit (4) is movable towards / away from the front portion (2a) and / or along the transverse direction (C-C) in the movement among the plurality of positions, and / or wherein the loading unit (4) is movable horizontally and vertically in the movement among the plurality of positions.

5. Plant (1) according to claim 3 or 4, wherein the movement system (11) is configured to move the loading unit (4) along a single trajectory in the movement from the lowered position to the raised position and vice versa, optionally the single trajectory being linear.

6. Plant according to any one of the preceding claims 3 to 5, wherein the movement system (11) comprises a kinematic chain and / or comprises: - a support (12) attached to the loading unit (4), - a driven member (13) constrained to the frame (2) and connected to the support (12), - an actuator (16) constrained to the driven member (13) and configured to move said driven member (13) so as to cause the loading unit (4) to move among the plurality of positions.

7. Plant (1) according to the preceding claim, wherein the driven member (13) is constrained to the frame (2) so as to have just one degree of freedom with respect to the frame (2), and wherein the actuator (16) comprises a cylinder connected to the driven member (13) and adapted to the linear movement of the driven member (13).

8. Plant (1) according to any one of the preceding claims 3 to 7, having a resting portion (3a) on the ground and wherein the loading unit (4) comprises a hopper (5) having an upper opening (17) adapted to receive the inert material and a base (18) adapted to connect with the frame (2), wherein: - when the loading unit (4) is in the raised position, the opening (17) of the hopper (5) is placed at a maximum distance from the resting portion (3a) of the plant (1), - when the loading unit (4) is in the lowered position, the opening (17) of the hopper (5) is placed at a minimum distance from the resting portion (3a) of the plant (1).

9. Plant (1) according to any one of the preceding claims, comprising a control unit in signal communication with the movement system (11) and configured to control the movement system (11) for the movement of the loading unit (4) with respect to the frame (2) at least towards / away from the front portion (2a).

10. Plant (1) according to the preceding claim when dependent on claim 3, wherein the control unit is in signal communication with the loading unit (4), the crushing unit (6) and the conveyor belt (7), the control unit being configured to: - command the movement system (11) to move the loading unit (4) from the lowered position to the raised position and vice versa, - command the loading unit (4) to feed inert material to the crushing unit (6), - command the crushing unit (6) to receive inert material from the loading unit (4), work the inert material and feed the worked inert material to the conveyor belt (7), - command the conveyor belt (7) to receive the worked inert material from the crushing unit (6) and eject the worked inert material.

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