JP2008183547A - Vibrating screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibrating screen that prevents its sieve without fail from vibrating against its frame during conveying and travelling. <P>SOLUTION: The vibrating screen 1 is equipped with a movable frame 4 supported so as to be able to switch between a working position and a conveying position against a fixed frame 3, wherein the sieve 8 is supported by the movable frame 4 with a rubber spring 12 so as to be able to vibrate. The fixed frame 3 is equipped with a frame-side anchor 14, whereas the sieve 8 is equipped with a sieve-side anchor 15. The sieve-side anchor 15 engages from above with the frame-side anchor 14 when the movable frame 4 rotates from a work position to a transport position, and thus the sieve 8 can be fixed to the fixed frame 3 via the sieve-side anchor 15 and the frame-side anchor 14 without being supported by the rubber spring 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibrating screen that is suitably used for sorting objects to be sorted, such as earth and sand, crushed stone, and wood chips, according to the size (grain size) of the grains.

  In general, a large amount of excavated soil including earth and sand and crushed stone is generated at work sites such as construction work and civil engineering work. Then, in order to reuse the generated excavated residual soil as a backfill material and a foundation ground material, a soil improvement machine is known that generates improved soil by mixing the excavated residual soil with a soil improving material such as quicklime and cement.

  In this case, it is necessary to select the size (granularity) of crushed stones, earth and sand, etc. contained in the excavation residual soil as a pre-operation for mixing the excavation residual soil and the soil improvement material by the soil improvement machine. A vibrating screen is preferably used that screens the objects to be sorted, such as crushed stone and earth and sand, into a size larger than a certain particle size and smaller than a certain particle size (for example, Patent Documents). 1).

JP 11-99339 A

  This vibrating screen according to the prior art comprises a frame forming a support structure provided on a crawler type traveling body, and a sieve device supported by the frame through a spring so as to vibrate. A sieve member for selecting an object according to the size of the particle size, and a vibration member for applying vibration to the sieve member are provided.

  The vibrating screen applies the vibration from the vibrating member to the sieving device supported by the spring, thereby sieving the earth (sorting object) put into the sieving member, and the earth and sand larger than a certain particle size. And earth and sand of a certain particle size or less.

  By the way, in the vibrating screen according to the prior art, the sieve device is supported by the frame through a spring so as to be vibrated. For this reason, the sieving device is not attached to the frame due to vibration when the vibration screen is loaded on a transport vehicle such as a trailer and transported to the work site, or vibration when the vibration screen is self-propelled by the traveling body. There is a problem that the frame vibrates easily and the frame and the sieve device collide and are damaged.

  Conventionally, for example, a cylindrical boss member is provided on the sieving device side, a fixing pin protruding in the lateral direction (horizontal direction) is provided on the frame side by the cylinder, and a vibrating screen is transported. Alternatively, when the vibrating screen is self-propelled, the fixing device on the frame side is inserted into the boss member on the sieving device side, thereby fixing the sieving device supported to be vibrated via the spring to the frame, A method for preventing the frame from colliding is employed.

  However, in the above-described conventional technology, the fixing pin is protruded in the lateral direction by the cylinder provided on the frame side, and this fixing pin is inserted into the inner peripheral side of the boss member provided on the sieve device side. It is necessary to form an appropriate gap between the two.

  For this reason, even if the fixing pin is inserted into the boss member, the sieve device supported by the frame through the spring so as to vibrate generates vibration in the range of the gap between the fixing pin and the boss member. There is a problem that the sieve device and the frame are damaged.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a vibrating screen capable of reliably suppressing vibration of the sieve device with respect to the frame during transportation or traveling. Yes.

  In order to solve the above-described problems, the present invention includes a frame that forms a support structure, and a sieving device that is supported by the frame so as to vibrate and that sorts an object to be sorted by applying vibration to the sieving member by a vibration member. Applied to the vibrating screen provided.

  According to the first aspect of the present invention, the frame is provided with a frame-side fixture, and the sieve device is engaged with the frame-side fixture from at least one of the upper side and the lower side. A sieve-side fixture for fixing the sieve device to the frame is provided.

  According to a second aspect of the present invention, the frame is attached to the fixed frame as a base, and is pivotably attached to the fixed frame between the working position and the transport position so as to be able to vibrate the sieve device. A movable frame to be supported; and an actuator for rotating the movable frame with respect to the fixed frame. The frame-side fixture is provided on the fixed frame, and the sieve-side fixture is mounted on the movable frame by the actuator. The structure is such that the frame-side fixture is engaged when the working position is turned to the transport position.

  According to a third aspect of the present invention, the frame is constituted by a fixed frame that supports the sieve device so as to vibrate with a certain inclination, and the frame-side fixture is located above and below the fixed frame. The present invention has a configuration in which a fixing device moving mechanism for engaging or disengaging the sieving side fixing device by moving in the direction is provided.

  According to a fourth aspect of the present invention, the fixture moving mechanism is provided between the cylinder attached to the fixed frame and the cylinder and the frame side fixture, and the frame side fixture according to the expansion and contraction of the cylinder. Is formed by a wedge member that moves the upper and lower sides.

  According to a fifth aspect of the present invention, the fixture moving mechanism includes a guide member that is provided on the fixed frame and holds the frame-side fixture so as to be movable upward and downward, and an intermediate portion in the length direction is the fixed frame. And a link whose one end in the length direction is connected to the frame-side fixture and whose other end is an operation end, and is operated by operating the operation end of the link. The frame-side fixture is configured to move upward and downward along the guide member.

  According to the first aspect of the present invention, the frame-side fixture provided on the frame and the sieve-side fixture provided on the sieve member are engaged from at least one of the upper side and the lower side, whereby the sieve device is attached to the frame. Can be fixed. In this case, since the sieve device is supported so as to be able to vibrate upward and downward with respect to the frame, the frame side fixture and the sieve side fixture are engaged in the vibration direction (upward and downward direction) of the sieve device. By doing so, vibration of the sieve device with respect to the frame can be prohibited. As a result, it is possible to reliably suppress the vibration of the sieving device with respect to the frame during transportation or traveling of the vibrating screen, thereby extending the life of the frame or the sieving device.

  According to the invention of claim 2, when the movable frame is rotated from the working position to the transport position with respect to the fixed frame by the actuator, the sieve side fixture of the sieve device supported by the movable frame so as to vibrate is fixed. The sieve device can be fixed to the fixed frame by engaging with a frame-side fixture provided on the frame from above and below. Therefore, when the movable frame is rotated from the work position to the transport position, the sieve device can be automatically fixed to the fixed frame, so that the workability can be improved.

  According to the invention of claim 3, when the frame side fixture is moved upward by the fixture moving mechanism, the frame side fixture engages with the sieve side fixture from below and lifts it up, The sieving device can be fixed to a fixed frame. On the other hand, when the frame-side fixture is moved downward by the fixture moving mechanism, the frame-side fixture is detached from the sieve-side fixture, so that the sieve device can be supported to be able to vibrate with respect to the fixed frame. .

  According to the invention of claim 4, when the cylinder attached to the fixed frame is expanded and contracted, the expansion and contraction of the cylinder is transmitted to the frame side fixing tool via the wedge member, and the frame side fixing tool moves upward and downward. By this, this frame side fixing tool can be engaged with or detached from the sieve side fixing tool.

  According to the invention of claim 5, when the operation end of the link rotatably supported by the fixed frame is operated, the frame side fixing tool connected to one end side in the length direction of the link extends along the guide member. By moving up and down, the frame-side fixture can be engaged or disengaged from the sieve-side fixture.

  Hereinafter, embodiments of the vibrating screen according to the present invention will be described in detail with reference to FIGS. 1 to 18 by taking a stationary vibrating screen as an example.

  First, FIG. 1 to FIG. 6 show a first embodiment of the present invention. In the figure, reference numeral 1 denotes a stationary vibration screen. The vibration screen 1 is used to screen the objects to be sorted, such as crushed stones and earth and sand contained in excavated residual soil generated by civil engineering work. The particle size is selected to be larger than the particle size and below a certain particle size. The vibrating screen 1 includes a frame 2, a sieve device 8, a frame side fixture 14, a sieve side fixture 15 and the like which will be described later.

  Reference numeral 2 denotes a frame of the vibrating screen 1 fixedly provided on the ground. The frame 2 is formed using a steel material such as a square pipe, and forms a strong support structure. The frame 2 is roughly constituted by a fixed frame 3, which will be described later, a movable frame 4, and an elevating cylinder 6.

  Reference numeral 3 denotes a fixed frame that serves as a base. The fixed frame 3 is disposed on the ground and extends in the front and rear directions, and has a rectangular lower frame portion 3A that is fixedly attached to the lower frame portion 3A. Are vertically constituted by a plurality of support columns 3B, 3B,..., And a rectangular upper frame portion 3C that is fixed to the upper end portions of these support columns 3B and extends in the front and rear directions. Further, the lower frame portion 3A is provided with a conveyor support base 3D that supports a proximal end side of a discharge conveyor 16 described later.

  Reference numeral 4 denotes a movable frame provided on the fixed frame 3. The movable frame 4 is turnable upward and downward with respect to the fixed frame 3, and supports a sieve device 8 described later so as to vibrate. . Here, the movable frame 4 has a rectangular frame shape extending in the front and rear directions, and is disposed on the upper frame portion 3 </ b> C of the fixed frame 3. Then, one end side in the length direction of the movable frame 4 is supported on the upper surface side of the upper frame portion 3 </ b> C constituting the fixed frame 3 so as to be rotatable upward and downward using the rotation shaft 5. Further, on the upper surface side of the movable frame 4, a plurality of hopper support legs 4A, 4A,...

  Reference numeral 6 denotes an elevating cylinder as an actuator provided between the fixed frame 3 and the movable frame 4. The elevating cylinder 6 is connected to the upper frame portion 3 </ b> C of the fixed frame 3 on the bottom side and the length of the movable frame 4 on the rod side. It is connected to the other end side in the vertical direction. Therefore, by extending and retracting the elevating cylinder 6, the other end side in the length direction of the movable frame 4 is rotated (lifted / lowered) upward and downward about the rotation shaft 5. As a result, the movable frame 4 is moved relative to the fixed frame 3 as shown in FIG. 3 when operating a sieve device 8 described later, and as shown in FIG. It is the structure which rotates between.

  An angle adjusting mechanism 7 is provided between the fixed frame 3 and the movable frame 4 in the vicinity of the elevating cylinder 6, and the angle adjusting mechanism 7 adjusts an inclination angle of the movable frame 4 with respect to the fixed frame 3. Is. Here, as shown in FIGS. 3 and 4, the angle adjustment mechanism 7 is provided on the lower bracket 7 </ b> A extending upward from the upper surface side of the upper frame portion 3 </ b> C constituting the fixed frame 3 and on the lower surface side of the movable frame 4. The upper bracket 7B and the pin 7C inserted through the lower bracket 7A and the upper bracket 7B.

  Then, for example, in the state where the movable frame 4 is rotated to the working position shown in FIG. 3 by the elevating cylinder 6 or the conveyance position shown in FIG. 4 is rotated, the pin 7C of the angle adjusting mechanism 7 is moved to the lower bracket. By being inserted through 7A and the upper bracket 7B, the movable frame 4 can be positioned at the work position or the transport position.

  8 is a sieving device supported on the movable frame 4 so as to be able to vibrate. The sieving device 8 sieves a sorting object such as crushed stone, earth and sand, and wood chips, for example. Sorting into large ones (contaminants) and ones below a certain particle size (sorts).

  Here, the sieve device 8 is formed in a rectangular box shape extending in the front and rear directions by the left side plate 9A, the right side plate 9B, and the plurality of beam members 9C connecting the left and right side plates 9A and 9B. A sieve frame 9 is provided. Further, a mesh-like sieve member 10 extending in the front and rear directions is provided inside the sieve frame body 9, and the left side plate 9 </ b> A of the sieve frame body 9 is provided with an eccentric weight (not shown). A vibration motor 11 is provided as a member. By rotating the vibration motor 11, vibration is applied to the sieve member 10 via the sieve frame body 9.

  A rubber spring 12 is provided between the movable frame 4 and the sieving device 8, and the rubber spring 12 supports the sieving device 8 on the movable frame 4 so as to vibrate. Here, two rubber springs 12 are separated from each other between the left side plate 9A of the sieve frame 9 and the movable frame 4 and between the right side plate 9B of the sieve frame 9 and the movable frame 4, respectively. A total of four are provided. In addition, as a member which supports the sieve apparatus 8 so that vibration is possible, not only the rubber spring 12 but elastic bodies, such as a coil spring, can be used, for example.

  As described above, the sieve device 8 is supported on the movable frame 4 through the rubber springs 12 so as to vibrate, and the working position (see FIG. 3 position) and a transport position (position of FIG. 4).

  Then, the sieving device 8 is put on the sieving member 10 by rotating the vibration motor 11 and vibrating the sieving frame body 9 and the sieving member 10 in the state shown in FIGS. 1 and 3. The selected object such as earth and sand is sieved, and the selected object is selected into a small particle size that can pass through the sieve member 10 (sorted material) and a large particle size that cannot pass (contaminated material). Is dropped onto a discharge conveyor 16 which will be described later, and foreign substances are sent out to a side conveyor 17 which will be described later.

  Reference numeral 13 denotes a hopper provided on the upper side of the sieving device 8. The hopper 13 guides an object to be sorted such as earth and sand onto the sieving member 10 of the sieving device 8. Here, the hopper 13 is mounted on a hopper support leg 4A erected on the upper surface side of the movable frame 4 and expands upward in a funnel shape from the sieve device 8. Thereby, for example, a sorting object such as earth and sand dropped from above the sieving device 8 using a hydraulic excavator or the like is guided onto the sieving member 10 by the hopper 13.

  Reference numeral 14 denotes a frame-side fixture provided on the fixed frame 3, and the frame-side fixture 14 is engaged with a sieve-side fixture 15 described later. In this case, as shown in FIGS. 3 to 6, two frame side fixing tools 14 are provided on the left and right side surfaces of the upper frame portion 3C constituting the fixed frame 3 so as to be separated from each other in the front and rear directions. Four are provided.

  Here, the frame side fixing tool 14 is fixed to the side surface of the upper frame portion 3C by means of welding or the like and extends upward, and a flat contact surface portion 14B provided at the upper end of the support post 14A. And an engaging protrusion 14C having a tapered shape (conical frustum shape) that protrudes upward from the central portion of the corresponding contact surface portion 14B and gradually tapers upward. And the engagement protrusion 14C of the frame side fixture 14 is configured to engage with a through hole 15B of the sieve side fixture 15 described later.

  Reference numeral 15 denotes a sieve-side fixture provided in the sieve device 8, and the sieve-side fixture 15 fixes the sieve device 8 to the fixed frame 3 by engaging each frame-side fixture 14 from above. Is. In this case, as shown in FIGS. 3 to 6, four sieve side fixing tools 15 are provided on the left side plate 9A and the right side plate 9B of the sieving frame body 9, two in front and rear, respectively. It faces the frame-side fixture 14 in the upward and downward directions.

  Here, the sieve-side fixture 15 includes a flat plate portion 15A which is fixed to the left and right side plates 9A and 9B of the sieve frame body 9 by means of welding or the like and protrudes in the horizontal direction, and a protruding end of the flat plate portion 15A. It is comprised by the through-hole 15B provided by penetrating up and down on the side.

  When the movable frame 4 is in the working position shown in FIG. 3, the sieve side fixture 15 provided in the sieve device 8 is the frame side fixture provided in the fixed frame 3 as shown in FIGS. 14 is spaced upwards. Therefore, when the movable frame 4 is in the working position, the sieve device 8 is supported by each rubber spring 12 so as to vibrate on the movable frame 4.

  On the other hand, when the movable frame 4 is rotated from the work position shown in FIG. 3 to the transport position shown in FIG. 4 by the elevating cylinder 6, as shown in FIG. 4 and FIG. The engaging projection 14C of the frame side fixture 14 is engaged from above, and the flat plate portion 15A of the sieve side fixture 15 contacts the contact surface portion 14B of the frame side fixture 14. Thereby, the sieve side fixing tool 15 is pushed up from the lower side by the frame side fixing tool 14, and each rubber spring 12 extends upward and downward from the state of FIG. Therefore, when the movable frame 4 is rotated to the transport position, the sieve device 8 is not supported by the rubber spring 12 but is fixed to the fixed frame 3 via the sieve side fixing tool 15 and the frame side fixing tool 14. It has a configuration.

  Reference numeral 16 denotes a discharge conveyor attached to the fixed frame 3, and the discharge conveyor 16 discharges the sorted material selected by the sieving device 8 to the outside. Here, as shown in FIGS. 1 and 2, the discharge conveyor 16 includes a conveyor frame 16 </ b> A whose base end is supported by the conveyor support 3 </ b> D of the fixed frame 3 and extends obliquely upward from the lower side of the sieving device 8. A belt 16D wound around a driving roller 16B provided on the distal end side of the frame 16A and a driven roller 16C provided on the proximal end side, and a motor 16E that drives the belt 16D to rotate are roughly constituted. And the discharge conveyor 16 receives the sorting which passed the sieve member 10 of the sieve apparatus 8 with belt 16D, conveys it to the predetermined discharge place, and discharges it.

  Reference numeral 17 denotes a side conveyor provided extending in a direction orthogonal to the discharge conveyor 16, and the side conveyor 17 discharges foreign substances sorted by the sieving device 8 to the outside. Here, as shown in FIGS. 1 and 2, the side conveyor 17 includes a conveyor frame 17 </ b> A whose base end side is disposed below the front end portion of the sieving device 8 and extends in the left and right directions, and the conveyor frame 17 </ b> A. A belt 17C wound around a driving roller 17B provided on the distal end side and a driven roller (not shown) provided on the proximal end side, and a motor 17D for driving the belt 17C to rotate are roughly constituted. The side conveyor 17 receives the contaminants that cannot pass through the sieve member 10 of the sieving device 8 and flow down on the sieve member 10 along the inclination by the belt 17C, and conveys it to a predetermined discharge location. To be discharged.

  The vibrating screen 1 according to the present embodiment has the above-described configuration, and when the sorting object such as earth and sand is sorted using the vibrating screen 1, the lifting cylinder 6 is extended as shown in FIG. Thus, the movable frame 4 is rotated to the working position. At this time, since the sieve-side fixture 15 provided in the sieve device 8 is spaced upward from the frame-side fixture 14 provided in the fixed frame 3, the sieve device 8 vibrates on the movable frame 4 by the rubber spring 12. Supported as possible.

  The earth and sand excavated by a hydraulic excavator or the like (not shown) in a state where the vibration motor 11, the discharge conveyor 16, and the side conveyor 17 of the sieving device 8 are operated are passed through the hopper 13 on the sieving member 10 of the sieving device 8. In Thereby, the earth and sand thrown on the sieve member 10 is sieved by the sieve member 10 to which vibration is given by the vibration motor 11, and the screened material having a predetermined particle size or less passing through the sieve member 10 and the sieve member 10. Sorted into impurities larger than a predetermined particle size that cannot pass.

  In this way, the sorted material that has passed through the sieve member 10 falls onto the belt 16D of the discharge conveyor 16, and is discharged to a predetermined discharge place by the belt 16D. On the other hand, contaminants that cannot pass through the sieve member 10 flow down on the sieve member 10 and drop onto the belt 17C of the side conveyor 17, and are discharged to a predetermined discharge location by the belt 17C.

  Next, after the sorting operation for earth and sand is completed, for example, when the vibrating screen 1 is loaded on a trailer and transported to another work site, the lifting cylinder 6 is reduced as shown in FIG. The movable frame 4 is rotated to the transport position.

  Thus, when the movable frame 4 rotates from the working position shown in FIG. 3 to the transport position shown in FIG. 4 around the rotation shaft 5, as shown in FIGS. The through-hole 15B engages with the engaging protrusion 14C of the frame side fixture 14 from above, and the flat plate portion 15A of the sieve side fixture 15 contacts the contact surface portion 14B of the frame side fixture 14. Thereby, the sieve side fixing tool 15 is pushed up from the lower side by the frame side fixing tool 14, and each rubber spring 12 extends upward and downward from the state of FIG.

  In this case, since the sieving device 8 is supported so as to vibrate upward and downward with respect to the movable frame 4, the frame side fixing tool 14 and the sieving side fixing in the vibration direction of the sieving device 8 (upward and downward). By engaging the tool 15, the vibration of the sieving device 8 with respect to the fixed frame 3 can be prohibited.

  Therefore, when the movable frame 4 is rotated to the transport position, the sieve device 8 is not supported by the rubber spring 12 but is fixed to the fixed frame 3 via the sieve side fixture 15 and the frame side fixture 14. Can do. Moreover, since each rubber spring 12 extends, a downward spring force acts on the sieve-side fixture 15, so that the sieve-side fixture 15 is securely engaged with the frame-side fixture 14, and the sieve device 8 is It can be firmly fixed to the fixed frame 3.

  Thus, according to the present embodiment, when the vibrating screen 1 is loaded on a trailer or the like and transported, the movable frame 4 is rotated to the transport position so that the sieve-side fixture 15 is moved upward to the frame-side fixture 14. The sieve device 8 can be fixed to the fixed frame 3 by engaging with the fixed frame 3. As a result, it is possible to reliably prevent the sieving device 8 from inadvertently vibrating on the frame 2 to collide with each other, thereby extending the life of the frame 2 and the sieving device 8.

  In this case, since the sieving device 8 is supported so as to vibrate upward and downward with respect to the movable frame 4, the frame side fixing tool 14 and the sieving side fixing in the vibration direction of the sieving device 8 (upward and downward). By engaging the tool 15, the vibration of the sieving device 8 with respect to the fixed frame 3 can be prohibited.

  In addition, the sieve side fixture 15 is engaged with the frame side fixture 14 only by rotating the movable frame 4 from the working position to the transport position by the elevating cylinder 6, so that the sieve device 8 is moved relative to the fixed frame 3. Therefore, it is possible to improve workability and safety when the sieve device 8 is fixed.

  Next, FIG. 7 to FIG. 10 show a second embodiment of the present invention. The feature of this embodiment is that the middle part of the movable frame in the longitudinal direction is upward and downward with respect to the fixed frame. It is that it is supported so that it can rotate. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 21 denotes a stationary vibration screen according to the present embodiment. It is comprised by.

  Reference numeral 22 denotes a frame of the vibrating screen 21 fixedly provided on the ground. The frame 22 is formed by using a steel material such as a square pipe, and forms a strong support structure. The frame 22 is roughly constituted by a fixed frame 23 (to be described later), a movable frame 24, and an elevating cylinder 26.

  Reference numeral 23 denotes a fixed frame as a base. The fixed frame 23 includes a rectangular lower frame portion 23A disposed on the ground, a plurality of support columns 23B erected on the lower frame portion 23A, and each support column. The upper frame portion 23C is generally composed of a rectangular upper frame portion 23C fixed to the upper end portion of 23B. Further, the lower frame portion 23A is provided with a conveyor support base 23D, and the base end side of the discharge conveyor 16 is supported on the conveyor support base 23D.

  A movable frame 24 is mounted on the fixed frame 23 so as to be pivotable upward and downward. The movable frame 24 supports the sieve device 8 via the rubber spring 12 so as to vibrate. Here, the movable frame 24 has a rectangular frame shape extending in the front and rear directions, and a midway portion in the length direction of the movable frame 24 is a rotation shaft on the upper surface side of the upper frame portion 23 </ b> C constituting the fixed frame 23. 25 is supported so as to be rotatable upward and downward. A plurality of hopper support legs 24A are provided upright on the upper surface side of the movable frame 24, and the hopper 13 is mounted on each hopper support leg 24A.

  Reference numeral 26 denotes an elevating cylinder as an actuator provided between the fixed frame 23 and the movable frame 24. The elevating cylinder 26 is connected to the upper frame portion 23C of the fixed frame 23 on the bottom side and the hopper of the movable frame 24 on the rod side. It is connected to the support leg 24A. Therefore, the movable frame 24 is configured to rotate between the work position shown in FIG. 7 and the transport position shown in FIG.

  An angle adjusting mechanism 27 is provided between the fixed frame 23 and the movable frame 24 in the vicinity of the elevating cylinder 26. The angle adjusting mechanism 27 extends downward from the upper frame portion 23C of the fixed frame 23. The side bracket 27A includes an upper bracket 27B provided on the lower surface side of the movable frame 24, and a pin 27C inserted through the lower bracket 27A and the upper bracket 27B. And the angle adjustment mechanism 27 positions the movable frame 24 in the work position shown in FIG. 7, or the conveyance position shown in FIG. 8 by inserting the pin 27C into the lower bracket 27A and the upper bracket 27B. .

  Reference numeral 28 denotes a frame-side fixture provided on the other end in the length direction of the fixed frame 23. The frame-side fixture 28 is provided on the left side of the upper frame portion 23C constituting the fixed frame 23, as shown in FIG. Two in total, one on the right side. Here, the frame-side fixture 28 includes a support column 28A extending upward from the upper frame portion 23C, a flat contact surface portion 28B fixed to the upper end portion of the support column 28A, and a center portion of the corresponding contact surface portion 28B. It is comprised by the taper-shaped upward engaging protrusion 28C which protruded toward the direction.

  Reference numeral 29 denotes another frame-side fixture provided on one end in the length direction of the fixed frame 23. The frame-side fixture 29 is an upper frame constituting the fixed frame 23 in the same manner as the frame-side fixture 28 described above. A total of two are provided on the left and right side surfaces of the part 23C (only one is shown). The frame-side fixture 29 includes a support column 29A extending upward from the upper frame portion 23C, a flat contact surface portion 29B fixed to the upper end portion of the support column 29A, and a center portion of the corresponding contact surface portion 29B. It is comprised by the taper-shaped downward engaging protrusion 29C which protruded.

  30 is a sieve-side fixture provided in the sieve device 8 corresponding to the frame-side fixture 28. The sieve-side fixture 30 is composed of the left side plate 9A and the right side plate of the sieve frame 9 as shown in FIG. A total of two pieces are provided for each of 9B and face the frame side fixture 28 in the upward and downward directions. Here, the sieve-side fixture 30 is fixed to the left and right side surfaces 9A and 9B of the sieve frame 9 and protrudes in the horizontal direction, and to the protruding end of the bracket 30A. 28, and a cylindrical portion 30B that engages with the upward engaging projection 28C from above.

  31 is another sieve-side fixture provided in the sieve device 8 corresponding to the frame-side fixture 29. The sieve-side fixture 31 constitutes the fixed frame 23 in the same manner as the sieve-side fixture 30 described above. Two pieces are provided, one on each of the left and right side surfaces of the upper frame portion 23C. Here, the sieve side fixing tool 31 includes a bracket (not shown) fixed to the left and right side plates 9A and 9B of the sieve frame body 9, and a downward engagement protrusion of the frame side fixing tool 29 fixed to the bracket. The cylindrical portion 31A is engaged with the portion 29C from below.

  When the movable frame 24 is in the working position shown in FIGS. 7 and 9, the sieve side fixtures 30 and 31 provided in the sieve device 8 are separated from the frame side fixtures 28 and 29 provided in the fixed frame 23. The top and bottom are separated. Therefore, when the movable frame 24 is in the working position, the sieve device 8 is supported by each rubber spring 12 so as to vibrate on the movable frame 24.

  On the other hand, when the movable frame 24 is rotated from the working position shown in FIG. 7 to the transporting position shown in FIG. 8 by the elevating cylinder 26, as shown in FIGS. 8 and 10, the cylindrical portion 30B of the sieve side fixing tool 30. Engages with the upward engaging protrusion 28C of the frame side fixture 28 from above, and the lower end of the cylindrical portion 30B abuts against the abutment surface portion 28B of the frame side fixture 28. As a result, the sieve-side fixture 30 is pushed up from the lower side by the frame-side fixture 28, and the rubber spring 12 positioned in the vicinity of the sieve-side fixture 30 extends upward and downward from the state of FIG. .

  At the same time, the cylindrical portion 31A of the sieve-side fixture 31 engages with the downward engaging projection 29C of the frame-side fixture 29 from below, and the upper end of the cylindrical portion 31A abuts the frame-side fixture 29. Abuts on the surface portion 29B. As a result, the sieve-side fixture 31 is pressed from above by the frame-side fixture 29, and the rubber spring 12 positioned in the vicinity of the sieve-side fixture 31 is contracted upward and downward from the state of FIG.

  Therefore, when the movable frame 24 is rotated to the transport position, the sieving device 8 is not supported by the rubber spring 12 and is fixed to the fixed frame 23 via the sieving side fixing tools 30 and 31 and the frame side fixing tools 28 and 29. It becomes the composition fixed to.

  Reference numeral 32 denotes a fixing pin inserted through the upward engaging projection 28C of the frame-side fixture 28 and the cylindrical portion 30B of the sieve-side fixture 30, and the fixing pin 32 is fixed to the frame-side fixture 28 and the sieve-side fixture. The tool 30 is fixed to the engaged state. Reference numeral 33 denotes a fixing pin inserted into the downward engaging protrusion 29C of the frame side fixing tool 29 and the cylindrical portion 31A of the sieve side fixing tool 31, and the fixing pin 33 is composed of the frame side fixing tool 29 and the sieve side fixing tool 31. Are fixed to the engaged state.

  The vibrating screen 21 according to the present embodiment has the above-described configuration. Also in this embodiment, the movable frame 24 is centered on the rotation shaft 25 from the work position shown in FIG. 7 to the transport position shown in FIG. The cylindrical portion 30B of the sieve-side fixture 30 engages with the upward engagement protrusion 28C of the frame-side fixture 28 from above, and the cylindrical portion 31A of the sieve-side fixture 31 is engaged with the frame-side fixture. 29 is engaged with the downward engaging projection 29C from below.

  Therefore, when the movable frame 24 is rotated to the transport position, the sieve device 8 is not supported by the rubber spring 12 but is fixed to the fixed frame 23 via the sieve side fixtures 30 and 31 and the frame side fixtures 28 and 29. Can be fixed. As a result, it is possible to reliably prevent the sieving device 8 from inadvertently vibrating on the frame 22 and colliding with each other when the vibrating screen 21 is transported, thereby extending the life of the frame 22 and the sieving device 8.

  Next, FIGS. 11 to 14 show a third embodiment of the present invention. The feature of this embodiment is that the frame-side fixture is moved upward and downward to engage with the sieve-side fixture. A fixing tool moving mechanism for detachment is provided. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 41 denotes a stationary vibration screen according to the present embodiment. The vibration screen 41 includes a fixed frame 42, a sieve device 43, a fixture moving mechanism 48, a frame side fixture 53, and a sieve side fixture 54 which will be described later. Etc.

  Reference numeral 42 denotes a fixed frame of the vibrating screen 41 fixedly provided on the ground. The fixed frame 42 supports a sieve device 43 described later so as to vibrate with a certain inclination. Here, the fixed frame 42 is fixed to a rectangular lower frame portion 42A disposed on the ground, a plurality of support columns 42B erected on the lower frame portion 42A, and an upper end portion of each support column 42B. The rectangular upper frame portion 42C is generally configured. The lower frame portion 42A is provided with a conveyor support base 42D, and the base end side of the discharge conveyor 16 is supported on the conveyor support base 42D. Further, a spring receiving seat 42E to which a coil spring 47 described later is attached is provided on one end side in the length direction of the upper frame portion 42C, and a fixing tool movement described later is provided on the other end side in the length direction of the upper frame portion 42C. A support base 42F that supports the mechanism 48 is provided.

  43 is a sieve device supported on the fixed frame 42 so as to be able to vibrate with a certain inclination. The sieve device 43 is used for sorting objects such as crushed stone, earth and sand, and wood chips, for example, having a particle size larger than a certain particle size (contamination). Product) and those below a certain particle size (sorted product).

  Here, the sieve device 43 includes a sieve frame 44 formed in a rectangular box shape extending in the front and rear directions, a mesh-like sieve member 45 provided inside the sieve frame 44, and a sieve frame And a vibration motor 46 as a vibration member attached to 44. Further, two spring receiving plates 44 </ b> A for receiving a coil spring 47 described later are provided on the side surface of the sieving frame body 44 so as to be separated in the front and rear directions. The sieve device 43 is configured to apply vibration to the sieve member 45 via the sieve frame 44 by rotating the vibration motor 46.

  A coil spring 47 is provided between the fixed frame 42 and the sieving device 43. The coil spring 47 supports the sieving device 43 on the fixed frame 42 so as to vibrate with a certain inclination. Here, the coil spring 47 is provided between the spring receiving base 42E of the fixed frame 42 and the spring receiving plate 44A of the sieve frame body 44, the casing 49 of the fixing tool moving mechanism 48 described later, and the spring receiving plate 44A of the sieve frame body 44. Are provided respectively.

  Reference numeral 48 denotes a fixture moving mechanism provided on the fixed frame 42. The fixture moving mechanism 48 moves a frame-side fixture 53 described later upward and downward to engage or disengage from the sieve-side fixture 54. Is. Here, the fixture moving mechanism 48 is disposed in the middle portion in the length direction of the upper frame portion 42C of the fixed frame 42 and the support base 42F of the fixed frame 42. As shown in FIGS. Casing 49, cylinder 50, driving wedge member 51, driven wedge member 52, and the like.

  Reference numeral 49 denotes a casing of the fixture moving mechanism 48. The casing 49 accommodates a cylinder 50, a driving wedge member 51, and a driven wedge member 52 which will be described later. Here, the casing 49 is formed in, for example, a rectangular parallelepiped box shape surrounded by the bottom plate 49A, the upper plate 49B, the front plate 49C, the rear plate 49D, and the side plate 49E, and is formed on the front end side of the upper plate 49B. Is formed with an opening 49F through which a frame-side fixture 53 described later is inserted. The bottom plate 49A of the casing 49 is fixed to the upper frame portion 42C of the fixed frame 42 and the upper surface side of the support base 42F using bolts or the like.

  Reference numeral 50 denotes a cylinder accommodated in the casing 49. The cylinder 50 is formed of, for example, a hydraulic cylinder, and the bottom side is rotatably coupled to the rear plate 49D of the casing 49. The rod 50A of the cylinder 50 is pin-coupled to a drive wedge member 51 described later so as to be rotatable.

  Reference numeral 51 denotes a driving wedge member attached to the rod 50A of the cylinder 50. The driving wedge member 51 cooperates with a driven wedge member 52, which will be described later, and a frame-side fixing member 53, which will be described later, according to the expansion and contraction of the cylinder 50. It moves up and down. Here, the driving wedge member 51 is formed of a block body having a substantially triangular shape, and the upper surface side thereof is an inclined surface 51A inclined downward from the rear end portion to the front end portion. A mounting eye 51B is fixed to the rear end portion of the drive wedge member 51, and the rod 50A of the cylinder 50 is pin-coupled to the mounting eye 51B. The drive wedge member 51 is configured to move forward and backward on the bottom plate 49A of the casing 49 by expanding and contracting the rod 50A of the cylinder 50.

  Reference numeral 52 denotes a driven wedge member provided between the drive wedge member 51 and a frame-side fixture 53 to be described later. The driven wedge member 52 is formed of a substantially triangular block body, and the inclined surface of the drive wedge member 51 It has an inclined surface 52A that is in sliding contact with 51A. Further, a frame-side fixture 53 described later is fixed to the upper surface side of the driven wedge member 52. Then, the driven wedge member 52 has its inclined surface 52A slidably contacted with the inclined surface 51A of the drive wedge member 51, so that the front plate 49C of the casing 49 moves as the drive wedge member 51 moves forward and backward. It is configured to move up and down along the lines.

  53 is a frame-side fixture provided on the driven wedge member 52. The frame-side fixture 53 is engaged with a later-described sieve-side fixture 54 by moving upward and downward by a fixture moving mechanism 48. Or it is a thing to leave. Here, the frame-side fixture 53 is fixed to the upper surface side of the driven wedge member 52 by welding or the like and extends upward through the opening 49F of the casing 49, and the flat side fixed to the upper end of the column 53A. The contact surface portion 53B and a tapered engagement protrusion 53C protruding upward from the central portion of the contact surface portion 53B.

  54 is a sieve-side fixture provided in the sieve device 43. The sieve-side fixture 54 fixes the sieve device 43 to the fixed frame 42 by engaging the frame-side fixture 53 from below. It is. In this case, two sieving-side fixtures 54 are provided on the side surface of the sieving frame body 44 so as to be separated from each other in the front and rear directions, and face the frame-side fixture 53 in the upward and downward directions.

  Here, the sieve-side fixture 54 is fixed to the side surface portion of the sieve frame body 44 by means of welding or the like and protrudes in the horizontal direction, and on the protruding end side of the flat plate portion 54A. It is comprised by the through-hole 54B provided by penetrating.

  11 and 13, when the cylinder 50 of the fixture moving mechanism 48 is contracted, the frame side fixture 53 fixed to the driven wedge member 52 is in the lower limit position and is detached from the sieve side fixture 54. Hold the state. Therefore, when the cylinder 50 is contracted, the sieving device 43 is supported by the coil springs 47 so as to vibrate on the fixed frame 42.

  On the other hand, as shown in FIGS. 12 and 14, when the cylinder 50 of the fixture moving mechanism 48 is extended, the driven wedge member 52 is lifted upward by the inclined surface 51 </ b> A of the drive wedge member 51, whereby the driven wedge member 52. The frame side fixing member 53 fixed to is moved to the upper limit position. As a result, the engaging protrusion 53C of the frame-side fixture 53 engages with the through hole 54B of the sieve-side fixture 54 from below, and the contact surface portion 53B of the frame-side fixture 53 is engaged with the sieve-side fixture 54. It contacts the flat plate portion 54A.

  As a result, the sieve-side fixture 54 is pushed up from below by the frame-side fixture 53, and each coil spring 47 extends upward and downward from the state of FIG. Accordingly, when the cylinder 50 is extended, the sieving device 43 is not supported by the coil spring 47 and is fixed to the fixed frame 42 via the sieving side fixture 54, the frame side fixture 53, and the fixture moving mechanism 48. It becomes the composition which is done.

  The vibrating screen 41 according to the present embodiment has the above-described configuration. According to the present embodiment, by extending the cylinder 50 of the fixture moving mechanism 48, the driving wedge member 51, the driven wedge member 52, Thus, the frame-side fixture 53 can be moved to the upper limit position, and the frame-side fixture 53 can be engaged with the sieve-side fixture 54.

  Accordingly, the sieve device 43 can be fixed to the fixed frame 42 via the sieve side fixture 54, the frame side fixture 53, and the fixture moving mechanism 48 without being supported by the coil spring 47. As a result, it is possible to reliably prevent the sieve device 43 from inadvertently vibrating on the fixed frame 42 when the vibrating screen 41 is transported and collide with each other, thereby extending the life of the fixed frame 42 and the sieve device 43. it can.

  Next, FIGS. 15 to 18 show a fourth embodiment of the present invention. The feature of this embodiment is that the fixture moving mechanism is constituted by a guide member and a link. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 61 denotes a stationary vibration screen according to the present embodiment. The vibration screen 61 includes a fixed frame 62, a sieve device 63, a fixture moving mechanism 68, a frame side fixture 72, and a sieve side fixture 74 described later. Etc.

  Reference numeral 62 denotes a fixed frame of the vibrating screen 61 provided fixed on the ground, and the fixed frame 62 supports a sieve device 63 described later so as to vibrate with a certain inclination. Here, the fixed frame 62 is roughly constituted by a lower frame portion 62A, a plurality of support columns 62B, and an upper frame portion 62C, and the lower frame portion 62A has a conveyor support base 62D that supports the proximal end side of the discharge conveyor 16. Is provided. The upper frame portion 62C is provided with a short spring pedestal 62E and a long spring pedestal 62F that are separated from each other in the front and rear directions.

  63 is a sieving device supported by a fixed frame 62 so as to vibrate with a certain inclination. The sieving device 63 is provided inside a sieving frame body 64 and a sieving frame body 64 formed in a rectangular box shape. The sieving member 65 and the oscillating motor 66 as the oscillating member attached to the sieving frame body 64 are roughly configured. Further, two spring receiving plates 64A for receiving a coil spring 67 described later are provided on the side surface portion of the sieve frame body 64 so as to be separated in the front and rear directions.

  67 is a coil spring provided between the fixed frame 62 and the sieving device 63. The coil spring 67 is formed between the spring receiving seats 62E and 62F of the fixed frame 62 and the spring receiving plates 64A and 64A of the sieving frame body 64. They are respectively provided in between, and support the sieve device 63 on the fixed frame 62 so as to vibrate with a certain inclination.

  Reference numeral 68 denotes a fixture moving mechanism provided on the fixed frame 62. The fixture moving mechanism 68 moves a frame-side fixture 72 described later upward and downward to engage or disengage from the sieve-side fixture 74. Is. Here, two fixing tool moving mechanisms 68 are provided on the upper frame portion 62 </ b> C of the fixing frame 62 so as to be separated from each other in the front and rear directions. As shown in FIGS. 16 to 18, the fixture moving mechanism 68 includes a guide member 69, a link 70, and the like which will be described later.

  Reference numeral 69 denotes a guide member of the fixture moving mechanism 68. The guide member 69 holds a frame-side fixture 72, which will be described later, so as to be movable upward and downward. Here, the guide member 69 is formed in a rectangular parallelepiped box shape that is surrounded by the front plate 69A, the rear plate 69B, the left and right side plates 69C, and extends downward, on the front plate 69A and the rear plate 69B. Overhanging plate portions 69 </ b> D that face in the front and rear directions are respectively provided in the lower intermediate portion. The lower end side of the guide member 69 is fixed on the upper frame portion 62C of the fixed frame 62 by means of welding or the like. The upper end side of the guide member 69 has a frame-side fixture 72 described later in the upward and downward directions. It is the opening end inserted so that a movement is possible.

  Reference numeral 70 denotes a link rotatably supported by an overhanging plate portion 69D of the guide member 69. The link 70 is connected to a frame-side fixture 72 described later, and the frame-side fixture 72 is connected along the guide member 69. It moves up and down. Here, as shown in FIGS. 16 to 18, the link 70 is formed of a substantially rectangular plate, and a long hole 70 </ b> A is formed at an intermediate position in the length direction. Also, one end in the length direction of the link 70 is connected to a frame-side fixture 72 to be described later, and the other end in the length direction of the link 70 is an operation end 70B operated by, for example, an operator.

  A rotation shaft 71 is inserted into the long hole 70A of the link 70, and both ends of the rotation shaft 71 are fixed to the overhang plate portions 69D of the guide member 69. Therefore, the link 70 is supported so as to be rotatable upward and downward about the rotation shaft 71 with respect to the guide member 69, and the operation end 70 </ b> B of the link 70 protrudes outside the guide member 69. ing.

  Reference numeral 72 denotes a frame-side fixture that is held by the guide member 69 so as to be movable upward and downward. The frame-side fixture 72 is connected to one end in the longitudinal direction of the link 70, and is linked to the upper and lower by the link 70. By moving in the direction, it engages or disengages with a sieve-side fixture 74 described later. Here, the frame side fixing tool 72 includes a support column 72A inserted into the guide member 69, a flat contact surface portion 72B fixed to the upper end portion of the support column 72A, and a center portion of the corresponding contact surface portion 72B. It is comprised by 72 C of taper-shaped engaging protrusions which protruded. Further, a bifurcated portion 72D that sandwiches the link 70 from the front and rear directions is formed on the lower end side of the support column 72A, and an upper pin through which a fixing pin 75 (to be described later) is inserted in the middle portion in the length direction of the support column 72A. The hole 72E and the lower pin hole 72F are formed so as to be spaced apart from each other upward and downward.

  The support 72A of the frame-side fixture 72 is inserted into the guide member 69, and the bifurcated portion 72D formed on the lower end side of the support 72A sandwiches one end of the link 70 in the guide member 69. The link 70 is pivotally connected to one end side of the link 70 via a connecting pin 73. Therefore, for example, the operator manually operates the operation end 70 </ b> B of the link 70, and the link 70 rotates upward and downward about the rotation shaft 71, whereby the frame-side fixture 72 is guided to the guide member 69. In this state, it is configured to move upward and downward between the upper limit position shown in FIG. 17 and the lower limit position shown in FIG.

  74 is a sieve-side fixture provided in the sieve device 63. The sieve-side fixture 74 fixes the sieve device 63 to the fixed frame 62 by engaging the frame-side fixture 72 from below. It is. In this case, two sieving-side fixtures 74 are provided on the side surface of the sieving frame body 64 so as to be separated from each other in the front and rear directions, and face the frame-side fixture 72 in the upward and downward directions.

  Here, the sieve side fixing tool 74 is fixed to the side surface portion of the sieve frame body 64 by means of welding or the like and protrudes in the horizontal direction, and the upper side and the lower side on the protruding end side of the flat plate portion 74A. It is comprised by the through-hole 74B provided by penetrating.

  Then, as shown in FIG. 18, when the frame side fixing tool 72 is moved to the lower limit position by the link 70, the frame side fixing tool 72 keeps being detached from the sieve side fixing tool 74. Therefore, in a state where the frame-side fixture 72 is moved to the lower limit position, the sieve device 63 is configured to be supported on the fixed frame 62 so as to vibrate by the coil springs 67.

  On the other hand, as shown in FIG. 17, when the frame side fixing tool 72 is moved to the upper limit position by the link 70, the engaging protrusion 72 </ b> C of the frame side fixing tool 72 is lowered to the through hole 74 </ b> B of the sieve side fixing tool 74. The contact surface portion 72B of the frame side fixture 72 contacts the flat plate portion 74A of the sieve side fixture 74.

  As a result, the sieve-side fixture 74 is pushed up from below by the frame-side fixture 72, and each coil spring 67 extends upward and downward from the state of FIG. Therefore, in a state where the frame side fixing tool 72 is moved to the upper limit position, the sieving device 63 is not supported by the coil spring 67, and the sieving side fixing tool 74, the frame side fixing tool 72, and the fixing tool moving mechanism 68 are moved. It is configured to be fixed to the fixed frame 62 via.

  Reference numeral 75 denotes a fixing pin that is inserted through the guide member 69 and the upper pin hole 72E or the lower pin hole 72F of the frame side fixing tool 72. When the frame side fixing tool 72 is moved to the upper limit position (position in FIG. 17), the fixing pin 75 is inserted into the lower pin hole 72F of the frame side fixing tool 72 and the guide member 69, thereby fixing the frame side fixing. The tool 72 can be held at the upper limit position. On the other hand, when the frame side fixing tool 72 is moved to the lower limit position (position of FIG. 18), the frame side fixing tool 72 is inserted into the upper pin hole 72E and the guide member 69 of the frame side fixing tool 72, thereby fixing the frame side fixing. The tool 72 can be held at the lower limit position.

  The vibrating screen 61 according to the present embodiment has the above-described configuration. According to the present embodiment, the operation end 70B of the link 70 constituting the fixture moving mechanism 68 is operated, and the rotation shaft 71 is centered. By rotating the link 70 as described above, the frame-side fixture 72 connected to the link 70 can be moved to the upper limit position, and the frame-side fixture 72 can be engaged with the sieve-side fixture 74.

  Accordingly, the sieve device 63 can be fixed to the fixed frame 62 via the sieve side fixing tool 74, the frame side fixing tool 72, and the fixing tool moving mechanism 68 without being supported by the coil spring 67. As a result, it is possible to reliably prevent the sieve device 63 from inadvertently vibrating on the fixed frame 62 and colliding with each other when the vibrating screen 61 is transported, thereby extending the life of the fixed frame 62 and the sieve device 63. it can.

  In the first embodiment described above, the case where the sieve-side fixture 15 provided in the sieve device 8 is engaged with the frame-side fixture 14 from above is illustrated. However, the present invention is not limited to this. For example, a screen-side fixture that engages with the frame-side fixture from below may be provided. That is, it is good also as a structure engaged from the downward engaging protrusion 29C of the frame side fixing tool 29 from the downward direction like the cylindrical part 31A of the sieve side fixing tool 31 by 2nd Embodiment.

  Further, in the above-described third embodiment, the case where the engaging protrusion 53 </ b> C of the frame-side fixture 53 is engaged with the sieve-side fixture 54 provided in the sieve device 43 from below is illustrated. However, this invention is not restricted to this, For example, it is good also as a structure which the engaging protrusion of a frame side fixing tool engages with a sieve side fixing tool from upper direction. That is, it is good also as a structure engaged with the frame side fixing tool 14 from upper direction like the sieve side fixing tool 15 by 1st Embodiment.

  In the first embodiment described above, the stationary vibration screen 1 in which the frame 2 is arranged on the ground is described as an example. However, the present invention is not limited to this, and can be applied to, for example, a self-propelled vibrating screen in which the frame 2 is mounted on a crawler-type lower traveling body. The same applies to the second, third, and fourth embodiments.

  Moreover, in 1st Embodiment mentioned above, the case where the mesh-shaped sieve member 10 is provided in the sieve frame 9 is illustrated. However, the present invention is not limited to this, and may be configured to use a large number of rod-shaped sieve members arranged in a comb-like shape such as grizzly. The same applies to the second, third, and fourth embodiments.

It is a front view which shows the vibrating screen by the 1st Embodiment of this invention with a discharge conveyor and a side conveyor. It is a top view which shows a vibration screen, a discharge conveyor, and a side conveyor. It is a front view which expands and shows the vibration screen in FIG. It is a front view which shows a vibrating screen in the state which the frame side fixing tool and the sieve side fixing tool engaged. It is sectional drawing which looked at the sieve apparatus, the frame side fixing tool, the sieve side fixing tool, the discharge conveyor, etc. from the arrow VV direction in FIG. It is sectional drawing similar to FIG. 5 which shows the state which the sieve side fixing tool engaged with the frame side fixing tool. It is a front view which shows the vibration screen by 2nd Embodiment. It is a front view which shows a vibrating screen in the state which the frame side fixing tool and the sieve side fixing tool engaged. It is sectional drawing which looked at the sieve apparatus, the frame side fixing tool, the sieve side fixing tool, the discharge conveyor, etc. from the arrow IX-IX direction in FIG. It is sectional drawing similar to FIG. 9 which shows the state which the sieve side fixing tool engaged with the frame side fixing tool. It is a front view which shows the vibration screen by 3rd Embodiment. It is a front view which shows a vibrating screen in the state which the frame side fixing tool and the sieve side fixing tool engaged. FIG. 12 is an enlarged view of a main part of a partially broken portion, showing the fixing device moving mechanism, the frame side fixing device, the sieve side fixing device and the like in FIG. 11 in an enlarged manner. It is the principal part enlarged view similar to FIG. 13 which shows the state which the frame side fixing tool engaged with the sieve side fixing tool. It is a front view which shows the vibration screen by 4th Embodiment. It is a principal part enlarged view which expands and shows the fixing tool moving mechanism in FIG. 15, a frame side fixing tool, a sieve side fixing tool, etc. It is sectional drawing which looked at the sieve apparatus, the frame side fixing tool, the sieve side fixing tool, the fixing tool moving mechanism, etc. from the arrow XVII-XVII direction in FIG. It is sectional drawing similar to FIG. 17 which shows the state which the frame side fixing tool removed from the sieve side fixing tool.

Explanation of symbols

1, 21, 41, 61 Vibrating screen 2, 22 Frame 3, 23, 42, 62 Fixed frame 4, 24 Movable frame 5, 25 Rotating shaft 6, 26 Lift cylinder (actuator)
8, 43, 63 Sieve device 9, 44, 64 Sieve frame 10, 45, 65 Sieve member 11, 46, 66 Excitation motor (excitation member)
14, 28, 29, 53, 72 Frame side fixing tool 15, 30, 31, 54, 74 Screen side fixing tool 16 Discharge conveyor 17 Side conveyor 48, 68 Fixing tool moving mechanism 49 Casing 50 Cylinder 51 Drive wedge member 52 Driven wedge Member 69 Guide member 70 Link 70B Operation end 71 Rotating shaft 73 Connecting pin

Claims (5)

In a vibrating screen comprising: a frame that forms a support structure; and a sieve device that is supported by the frame so as to vibrate and that sorts an object to be sorted by applying vibration to the sieve member by a vibration member.
The frame is provided with a frame-side fixture, and the sieve device is fixed to the frame-side fixture by engaging the frame-side fixture from at least one of the upper side and the lower side. A vibrating screen, characterized in that a configuration is provided. The frame includes a fixed frame that serves as a base, a movable frame that is rotatably attached to the fixed frame in an upward and downward direction between a working position and a transport position, and supports the sieving device so as to vibrate. The movable frame is configured with an actuator that rotates with respect to the fixed frame,
The frame-side fixture is provided on the fixed frame, and the sieve-side fixture is configured to engage with the frame-side fixture when the movable frame is rotated from a working position to a transport position by the actuator. Item 8. The vibrating screen according to Item 1.   The frame is constituted by a fixed frame that supports the sieve device so as to vibrate with a certain inclination, and the fixed frame is moved by moving the frame side fixture upward and downward relative to the fixed frame. The vibrating screen according to claim 1, wherein a fixing device moving mechanism that engages or disengages the sieving side fixing device is provided.   The fixing device moving mechanism is provided between the cylinder attached to the fixing frame and the cylinder and the frame-side fixing device, and moves the frame-side fixing device upward and downward according to the expansion and contraction of the cylinder. The vibrating screen according to claim 3, wherein the vibrating screen is formed by a wedge member.   The fixing tool moving mechanism includes a guide member that is provided on the fixing frame and holds the frame side fixing tool so as to be movable upward and downward, and a midway portion in the length direction is rotatable with respect to the fixing frame. A link having one end in the length direction connected to the frame side fixture and the other end serving as an operation end is configured, and the frame side fixture is operated by operating the operation end of the link. The vibrating screen according to claim 3, wherein the vibrating screen is configured to move upward and downward along the member.

Images