EP2897732A1 - Backenbrecher zur zerkleinerung von brechgut - Google Patents
Backenbrecher zur zerkleinerung von brechgutInfo
- Publication number
- EP2897732A1 EP2897732A1 EP13765733.4A EP13765733A EP2897732A1 EP 2897732 A1 EP2897732 A1 EP 2897732A1 EP 13765733 A EP13765733 A EP 13765733A EP 2897732 A1 EP2897732 A1 EP 2897732A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jaw
- crushing
- wedge
- edge
- crusher
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
- B02C1/10—Shape or construction of jaws
Definitions
- the invention relates to a jaw crusher for crushing crushed material with at least one crushing jaw, which is arranged on a receiving body, wherein the crushing jaw has at a first jaw edge an encircling, which engages around an edge of the receiving body.
- Jaw crushers are used for crushing crushed material such as stones, ores, coal and the like, and are used for example in opencast mining.
- a body jaw crusher on a frame, and a crushing jaw can be added to the frame resting, while a further crushing jaw is moved by a drive unit periodically against the quiescent crushing jaw.
- the crushed material which is placed between the crushing jaws, is crushed by the movement of the B rech each other until the crushed material finally reaches break sizes to leave the area between the crushing jaws through a crushing gap.
- swingarm breakers can be distinguished from pendulum swinging crushers.
- the fixed crushing jaw for example, be fixed to the frame, in particular on a front wall of the jaw crusher, while the moving crushing jaw is attached to a rocker over which the crushing jaw is moved with the drive unit against the fixed crushing jaw.
- the arrangement of the crushing jaws on the frame of the jaw crusher or on the rocker is designed so that the crushing jaws can be replaced.
- releasable wedge connections are therefore known with which the crushing jaws can be clamped to the respective receiving body.
- a jaw crusher for crushing crushed material is known, and it is shown a crushing jaw, which is fastened with a wedge body and a clamping screw on a rocker, so that the crushing jaw shown forms the moving crushing jaw of the jaw crusher.
- the crushing jaw on the receiving body negative voltage conditions in the crushing jaw and between the crushing jaw and the receiving body.
- a holder is required over which the crushing jaw must be received on the receiving body.
- DE 698 37 724 T2 shows a jaw crusher designed as a rocker arm crusher with a fixed, arranged on a receiving body crushing jaw and a movable, arranged on a rocker crushing jaw.
- the crushing jaws are mounted on wedge elements, wherein in detail side wedge elements are shown, with which the fixed, arranged on the receiving body crushing jaw is attached.
- Figure 1 shows a jaw crusher 1 for crushing crushed material with a first crushing jaw 10, which is arranged on a receiving body 11, wherein the Receiving body 11 forms the front wall 11 in the frame of the jaw crusher 1.
- the crushing jaw 10 On the underside, the crushing jaw 10 has a wrap-around 13, which engages around an edge 14 of the receiving body 11 on the underside.
- 11 inserts of different thickness must be provided between the Umgriff 13 of the back edge 12 and the edge 14 of the receiving body to compensate for dimensional changes of the crushing jaw 10.
- a second arranged on a moving rocker 22 crushing jaw 10 is made in two parts and keyed to the rocker 22, wherein the wedging causes unfavorabledersverphase in the crushing jaw 10, so that additional elastic elements are required.
- Such attachment of a crushing jaw 10 to a rigid receiving body 11 of the jaw crusher 1 is thus in principle unsuitable.
- the invention includes the technical teaching that a wedge body is provided, with which the crushing jaw is wedged on one of the first jaw edge opposite the second jaw edge on the receiving body, that the crushing jaw is braced to form a tensile stress between the jaw edges on the receiving body.
- the wedge body may be formed by any body having at least one wedge surface over which a mechanical stress in the Crushing jaw can be initiated.
- the mechanical stress is introduced into the crushing jaw such that, averaged over the cross section, a tensile stress results in the body of the crushing jaw between the jaw edges.
- the wedge body can be understood as a strain body, and there may be a wedge surface, a conical surface or a conical surface on the bracing body, each of which allows the application of a bracing force.
- the jaw edges do not necessarily have to edge over the crushing jaw, and the main dimensions of the crushing jaw may give rise to greater values than the distance between the two jaw edges.
- edge on the receiving body which is encompassed by the back edge of the crushing jaw, but also the back edge itself, beveled, so that a release of the crushing jaw from the receiving body through prevents a positive connection formed between the edge of the receiving body and the breaking edge.
- the wedge body can be clamped with at least one clamping element on the crushing jaw, wherein the clamping element is re-tensioned, for example, for post-tension between the wedge body and the crushing jaw.
- the clamping element may be formed by a clamping screw, which is passed through a screw hole in the crushing jaw and clamped between the wedge body and the crushing jaw.
- a nut may be screwed, and for example, can be adjusted by tightening the nut on the clamping screw, the tension of the wedge body against the receiving body.
- a plurality of wedge bodies can be arranged on a back edge, and each core body can be braced with one or more tension elements with the crushing jaw.
- each core body can be braced with one or more tension elements with the crushing jaw.
- two wedge body can be arranged over the length of the second jaw edge, and each of the wedge body is clamped with two clamping elements.
- the wedge body may be strip-shaped and extend in a transverse direction at least partially over the length of the second jaw edge.
- the extension direction of the clamping element for bracing the wedge body may extend perpendicular to the extension direction of the wedge body, and the strip-shaped extension of the wedge body may extend parallel to the second jaw edge.
- the bracing of the crushing jaw on the receiving bodies can be provided in various ways.
- the second back edge as well as the first back edge have a wrap around, which the Wedge body at least partially surrounds, so that the crushing jaw in cross-section has a degenerate U-shape, since both Umgriffe have the back edges in the same direction.
- the wedge body can sit between the wraparound and the receiving body. If the wedge body is braced with the crushing jaw over the clamping element, a form fit occurs between the crushing jaw and the receiving body, since the wedge body has a wedge surface which forms an angle to the course of the tensioning element. If the wedge body braced in the direction of the clamping element, the wedge surface comes to rest on the receiving body, whereby a kind of undercut is formed, and so that a captive, form-fitting bond between the receiving body and the crushing jaw forms.
- At least one shim body can be arranged between the receiving body and the wedge body, which is preferably arranged on the receiving body or formed as part of the receiving body.
- the supplemental body has a wedge surface for bearing the wedge body, which corresponds to the wedge surface on the wedge body. If the wedge body is clamped under application of the tensile stress in the crushing jaw, then the Keii torque of the wedge body can slide on the wedge surface of the shim body on the receiving body under application of the tensile stress in the crushing jaw.
- the jaw crusher may have a fixed and one arranged on a rocker moving crushing jaw, wherein the clamped by the wedge body crushing jaw is preferably formed by the fixed crushing jaw of the jaw crusher.
- the receiving body may be formed by a frame of the jaw crusher and preferably by the front wall of the jaw crusher.
- the rocker is periodically reciprocated by a drive unit against the front wall of the jaw crusher, so that the crushed material is crushed between the two crushing jaws.
- the first crushing edge can form the underside edge of the crushing jaw in its installed position, so that the gripping surrounds the receiving body on the underside. Consequently, the second jaw edge, on which the wedge body is clamped against the receiving body, forms the upper-side edge of the crushing jaw, so that the wedge body, in particular with the interposition of the supplemental body, acts against the upper-side edge of the receiving body.
- the first jaw edge engages around the upper edge of the receiving body with the wrap, and the second jaw edge is braced under bias with the wedge body against the lower edge of the receiving body.
- a retightening of the clamping element on the lower side of the crushing jaw is more difficult.
- the introduced with the wedge body tension in the crushing jaw thereby extends in a vertical direction of the crushing jaw, wherein the vertical direction may deviate from the perpendicular, because then, when the crushing jaw, the solid, im
- Frame of the jaw crusher arranged forming jaw it may be arranged under a skew to the vertical in the frame of the jaw crusher.
- a side wedge element can be provided, with which the crushing jaw is clamped in a direction transverse to the vertical direction stroke direction.
- Side wedge elements usually find in the area of the side walls of the
- Jaw crusher use, which cause additional clamping of the crushing jaw in the jaw crusher.
- the tensile stress formed according to the invention in the crushing jaw is merely to be seen as a tension which results from a tensile force introduced into the crushing jaw via the wedge body.
- Actual, locally occurring stresses in the crushing jaw can also affect compressive stress areas due to bending and transverse forces, so that the introduction according to the invention of the tensile stress into the crushing jaw over the entire cross section of the crushing jaw averaged between the jaw edges is to be understood.
- the tensile stress in the crushing jaw is in particular designed so that it is reduced due to an elongation of the crushing jaw between the jaw edges.
- the elongation can be caused by the rolling effect of the crushed material on the surface of the crushing jaw.
- the clamping elements can be readjusted from time to time for bracing the wedge body in the crushing jaw to ensure a minimum value of the tensile stress in the crushing jaw between the jaw edges.
- Figure 1 shows an embodiment of a jaw crusher in one
- FIG. 2 shows the view of a crushing jaw in arrangement on a
- Receiving body which is formed by the fixed front wall of the jaw crusher
- Figure 3 is a plan view of the crushing jaw in arrangement on the
- Figure 1 shows a jaw crusher 1 according to the prior art and has already been described in the introduction.
- Figure 2 shows a crushing jaw 10 in arrangement on a receiving body 11, wherein Figure 2a is a detail view of the arrangement of the wedge body 15 for
- the receiving body 11 forms the front wall 11 of the jaw crusher, so that behind the front wall 11, the side wall 23 connects, which is partially shown in the adjacent to the front wall 11 area.
- the crushing jaw 10 forms a fixed, resting in the jaw crusher 1 arranged crushing jaw 10, and on the active side of the crushing jaw 10 crushing teeth 25 are arranged, which can act against the crushed material, which is given front of the crushing jaw 10.
- the crushing jaw 10 On the lower side, the crushing jaw 10 on a back edge 12, which is formed by a wrap 13.
- the wrapping 13 surrounds the lower edge 14 of the receiving body 11, the upper side of the crushing jaw 10 is limited by a second jaw edge 18 which is disposed opposite the lower, first jaw edge 12.
- the embodiment of the crushing jaw 10 thus extends between the first crushing edge 12 on the underside and the second trailing edge 18 on the upper side with respect to the installed position of the crushing jaw 10.
- the enclosures 13 and 18 surround the receiving body 11, which extends approximately parallel to the crushing jaw 10, wherein the crushing jaw 10 is formed correspondingly longer, so that the crushing jaw 10 with its handles 13 and 18 can surround the receiving body 11.
- the upper edge of the receiving body 11 is limited by a shim body 19, which is executed in the embodiment shown as a single part and is connected by a weld 26 with the receiving body 11.
- a wedge body 15 is disposed, and the wedge body 15 is adjacent to a wedge surface 20 of the shim body 19 at.
- the wedge body 15 is clamped by means of a clamping screw 17 in the crushing jaw 10, wherein the clamping screw 17 extends through a screw hole 21 through the body of the crushing jaw 10 therethrough.
- a tensile force is introduced into the crushing jaw 10 via the enclosures 13 and 18, which extends between the first, lower jaw edge 12 and the second, upper-side jaw edge 16.
- the tensile force between the jaw edges 12 and 16 leads to a tensile stress in the crushing jaw, which extends in the vertical direction Z ', taking into account the skew of the Crushing jaw 10 in the installed position in the jaw crusher 1 corresponds approximately to the vertical direction Z of the jaw crusher.
- the vertical direction Z corresponds to the vertical axis, wherein the effective direction of the crushing jaw 10 corresponds to the crushed material of the stroke direction X, wherein in the stroke direction X - shown in Figure 1 - rocker 22 moves with the moving crushing jaw 10.
- crushing jaw 10 By means of the tensile force in shown vertical direction Z 'arranged on the receiving body 11 crushing jaw 10 is avoided during elongation of the crushing jaw 10 in the operation of the jaw crusher 1, that the wraparound 13 of the edge 14 of the receiving body 11 dissolves. In this case, the use of inserts between the inside of the handle 13 and the lower edge 14 of the receiving body 11 is unnecessary, since at an elongation of the breaking edge 10 in the measure between the jaw edges 12 and 16, only the introduced into the crushing jaw 10 tensile force is reduced. This can be increased by tightening the nut 24 and the further retraction of the wedge body 15 in the gap between the wrapper 18 and the shim body 19 again.
- screw hole 21 can be used in a manner not shown, a presser, for example, be screwed, which allows loosening of the wedge body 15 in the arrangement shown, if previously the clamping screw 17 and the nut 24 were removed.
- FIG 3 shows a plan view of the crushing jaw 10 in arrangement on the receiving body 11, which is formed by the front wall 11 of the jaw crusher.
- the crushing jaw 10 is braced at its upper, second jaw edge 16 with two elongated wedge bodies 15 extending in the transverse direction Y, wherein the wedge bodies 15 are clamped to the crushing jaw 10 via the clamping elements 17 shown only schematically.
- the clamping elements 17 in the form of clamping screws 17 are arranged for an operator easily accessible on the top of the crushing jaw 10, and by a prolongation of the crushing jaw 10 in operation of the jaw crusher, the introduced tensile stress in the crushing jaw 10 can decrease, so that the clamping screws 17 through the Easy accessibility by an operator can be easily retightened.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012108932.9A DE102012108932A1 (de) | 2012-09-21 | 2012-09-21 | Backenbrecher zur Zerkleinerung von Brechgut |
| PCT/EP2013/069572 WO2014044795A1 (de) | 2012-09-21 | 2013-09-20 | Backenbrecher zur zerkleinerung von brechgut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2897732A1 true EP2897732A1 (de) | 2015-07-29 |
| EP2897732B1 EP2897732B1 (de) | 2017-09-06 |
Family
ID=49226181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13765733.4A Active EP2897732B1 (de) | 2012-09-21 | 2013-09-20 | Backenbrecher zur zerkleinerung von brechgut |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2897732B1 (de) |
| DE (1) | DE102012108932A1 (de) |
| DK (1) | DK2897732T3 (de) |
| WO (1) | WO2014044795A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014106091A1 (de) | 2014-04-30 | 2015-11-05 | Thyssenkrupp Ag | Brechbacke für einen Backenbrecher |
| DE102017107442B4 (de) | 2017-04-06 | 2021-03-18 | Krauss-Maffei Wegmann Gmbh & Co. Kg | Vorrichtung zum Laden einer Rohrwaffe mit Munitionskörpern |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE377438C (de) | 1921-03-24 | 1923-06-19 | Elektroschmelze G M B H | Brechbacke fuer Steinbrecher, deren Arbeitsflaeche aus einem anderen Metall als hartem Stahl besteht |
| US2441205A (en) * | 1943-08-03 | 1948-05-11 | Edward T Peterson | Wearing plates for crushers |
| US3144214A (en) * | 1962-03-08 | 1964-08-11 | Esco Corp | Rock crusher |
| US3984058A (en) * | 1975-11-26 | 1976-10-05 | Barber-Greene Company | Means for holding dies in a jaw crusher |
| AUPM559994A0 (en) * | 1994-05-12 | 1994-06-02 | Clyde Industries Limited Trading As Jacques | Jaw crushers |
| FI103329B1 (fi) | 1997-12-22 | 1999-06-15 | Nordberg Lokomo Oy | Tapa leukamurskaimen kulutusleuan kiinnittämiseksi ja leukamurskain |
| US6155507A (en) * | 1999-03-20 | 2000-12-05 | Cedarapids, Inc. | Device for securing the stationary jaw of a jaw crusher |
| DE102006019069B4 (de) * | 2006-04-23 | 2013-10-17 | Atlas Copco Construction Tools Gmbh | Zerkleinerungsvorrichtung |
-
2012
- 2012-09-21 DE DE102012108932.9A patent/DE102012108932A1/de not_active Withdrawn
-
2013
- 2013-09-20 WO PCT/EP2013/069572 patent/WO2014044795A1/de not_active Ceased
- 2013-09-20 EP EP13765733.4A patent/EP2897732B1/de active Active
- 2013-09-20 DK DK13765733.4T patent/DK2897732T3/en active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014044795A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012108932A1 (de) | 2014-03-27 |
| WO2014044795A1 (de) | 2014-03-27 |
| EP2897732B1 (de) | 2017-09-06 |
| DK2897732T3 (en) | 2017-12-11 |
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