Maintenance tool for jaw crusher

Abstract

A jaw crusher maintenance tool (10) for supporting an article (15) during maintenance of a jaw crusher (20), the jaw crusher (20) comprising a fixed jaw (30) and a movable jaw (40) mounted in a crusher frame (50) and defining a crushing chamber (60) for material to be crushed, the maintenance tool (10) comprises a support frame (70) for supporting the article (15) and a jaw crusher mount (80) attached to the support frame (70), the jaw crusher mount (80) for mounting the maintenance tool (10) on a jaw crusher (20) in which the maintenance tool (10) is attached to the support frame (70), the support frame (70) is movable about a first articulation axis (90) and / or a second articulation axis (100) between a transfer position and an article support position on the jaw crusher (20).

Description

Technical Field

[0001] The present invention relates to a jaw crusher service tool for supporting an item such as a toggle plate during service of the jaw crusher. The present invention also relates to a hydraulic system configured to operate a jaw crusher independently of a primary power source. Background Art

[0002] A variety of different crushers have been developed for processing bulk materials such as stone, minerals and domestic and industrial waste including building materials to produce a crushed product for subsequent processing or disposal.

[0003] A jaw crusher generally consists of a fixed jaw and a movable jaw mounted in a crusher frame, wherein the movable jaw is movable relative to the fixed jaw to generate a thrust to crush the material in a crushing chamber defined between the two jaws. The jaw crusher comprises a cross beam in the crusher frame and a toggle plate clamped between the cross beam and the movable jaw. A hydraulic system applies a load to the cross beam, which is transmitted to the movable jaw via the toggle plate to resist the forces generated during crushing. The jaw crusher can be a mobile or a fixed crusher, wherein the mobile crusher is provided with a wheeled or tracked chassis and the fixed crusher is provided with a fixed crusher main frame.

[0004] Jaw crushers require regular maintenance and repair, and due to the forces to which they are subjected during use, parts of the jaw crusher sometimes need to be assembled, disassembled, replaced or removed for repair, for example a worn (typically after 3,000 to 4,000 hours of use) or damaged toggle plates may need to be removed and replaced. Due to the construction of the jaw crusher, these items must usually be removed and replaced manually from below. However, toggle plates and other jaw crusher parts can be extremely heavy and cumbersome (e.g., a toggle plate typically has a weight of about 100 kg), with the result that manual handling of the items can present significant health and safety risks to maintenance personnel.

[0005] Known jaw crushers are also equipped with a hydraulic system powered by the jaw crusher motor to achieve movement of the movable jaw and clamp the toggle plate between the movable jaw and the crossbar. Therefore, in order to make the toggle plate available for removal, the jaw crusher motor is activated to lock the movable jaw in the open state, and then the jaw crusher motor is turned off to allow manual access to the toggle plate. Once the motor is turned off, the hydraulic fluid returns through the hydraulic system under the action of gravity, causing the movable jaw to close. Summary of the invention

[0006] An object of the present invention is to provide a jaw crusher service tool to aid in the service of a jaw crusher so as to minimise health and safety risks. Another object of the present invention is to provide a hydraulic system for a jaw crusher, the hydraulic system being configured to effect movement of a movable jaw independently of the jaw crusher motor. Thereby, potential safety hazards associated with closing of the movable jaw can be avoided and the time available to effect removal of the toggle plate can be extended.

[0007] The objects of the present invention are achieved by the constructions set out in the attached claim 1. Preferred embodiments set out in the dependent claims will become apparent from the description and the subject matter.

[0008] According to the present invention, there is provided a jaw crusher maintenance tool for supporting a toggle plate during maintenance of a jaw crusher. The crusher comprises a fixed jaw and a movable jaw, the fixed jaw and the movable jaw being mounted in a crusher frame and defining a crushing chamber for material to be crushed, the maintenance tool comprising: a support frame for accommodating and supporting the toggle plate, and a jaw crusher mounting seat rotatably attached to the support frame for mounting the service tool on a jaw crusher, The support frame is movable about a first articulated axis (90) and / or a second articulated axis (100) between a conveying position on the jaw crusher and a first toggle plate supporting position and a second toggle plate supporting position.

[0009] The jaw crusher tool therefore allows heavy components such as toggle plates to be safely handled and manipulated during service and maintenance operations.

[0010] In any embodiment, the service tool is configured to protrude laterally from the crusher frame in a first support position to load the toggle plate to the service tool, and is configured to protrude laterally into the crusher frame in a second support position to reach under the movable jaw to unload the toggle plate to the movable jaw.

[0011] Suitably, the support frame includes a tool storage compartment for storing items in a transport cum storage position.Thus, the support frame may provide dual functionality, ie supporting and storing various items, as required.

[0012] In one embodiment, the first articulation axis comprises a horizontal pivot axis. Thus, the support frame can be pivoted and positioned as required, for example by pivoting 90° about the horizontal axis. o .

[0013] In any embodiment, the second hinge axis comprises a vertical pivot axis. Thus, the support frame can be pivoted and positioned as required, for example by pivoting 180 degrees about the vertical axis. o .

[0014] In one embodiment, the mounting seat defines said horizontal pivot axis and the vertical pivot axis.Thus, the mounting seat has a dual function and ensures that the jaw crusher service tool is compact and space-saving.

[0015] Suitably, the support frame comprises a platform. The platform defines a support surface for the article.

[0016] In one embodiment, the support frame comprises an object holder or clamps the object. Thus, the object is safely supported on the platform.

[0017] Optionally, the jaw crusher mounting is a removable jaw crusher mounting. Thus, the jaw crusher service tool can be removed and repositioned on the jaw crusher as required.

[0018] Suitably, the jaw crusher mounting base is configured to be mountable on a crusher chassis or a crusher frame.Thus, the jaw crusher service tool can be located at various positions on the jaw crusher.

[0019] The invention also extends to a jaw crusher comprising a jaw crusher service tool as defined above.

[0020] In any embodiment, the jaw crusher comprises: A motor, which provides a main power source to a main hydraulic pump of the jaw crusher; a crusher frame supporting a fixed jaw and a movable jaw defining a crushing chamber; a crossbeam, which is transversely mounted in the crusher frame; a toggle plate extending between the crossbeam and the movable jaw, a hydraulic system having a main pump line powered by a main hydraulic pump for moving the movable jaw and clamping the toggle plate, and Auxiliary main pump line, which is powered by the main hydraulic pump for moving the movable jaw and releasing the toggle plate. The hydraulic system includes an auxiliary pump that is powered independently of the main pump to achieve movement of the movable jaw. Thus, the movable jaw can be powered to open and remain open as required without the need for motor operation to improve safety during maintenance operations.

[0021] Suitably, the auxiliary pump comprises a battery powered auxiliary pump.Thus, the auxiliary pump does not require power via a motor.

[0022] In any embodiment, the battery powered auxiliary pump is a 24V service pump.

[0023] In one embodiment, the auxiliary pump is located in an accumulator box on the crusher frame. This ensures a faster response time for shock attenuation and a reduction in water hammer effects.

[0024] Suitably, the accumulator frame includes a shut-off valve to isolate the hydraulic system from the auxiliary pump as required. This prevents fluid from returning to the tank during operation of the auxiliary pump.

[0025] The present invention also extends to a jaw crusher comprising: A motor, wherein the motor provides a main power source to a main hydraulic pump of the jaw crusher; a crusher frame supporting a fixed jaw and a movable jaw, the fixed jaw and the movable jaw defining a crushing chamber; a crossbeam, the crossbeam being transversely mounted in the crusher frame; a toggle plate extending between the cross beam and the movable jaw, and a hydraulic system having a main pump line powered by the main hydraulic pump for moving the movable jaw and clamping the toggle plate; Wherein, the hydraulic system includes an auxiliary pump, which is powered independently of the main pump to achieve the movement of the movable jaw. Therefore, the movable jaw can be powered to open and remain open as required without the need for motor operation to improve safety during maintenance operations.

[0026] Suitably, the auxiliary pump comprises a battery powered auxiliary pump.Thus, the auxiliary pump does not require power via a motor.

[0027] In any embodiment, the battery powered auxiliary pump is a 24V service pump.

[0028] In one embodiment, the auxiliary pump is located in an accumulator box on the crusher frame. This ensures a faster response time for shock attenuation and a reduction in water hammer effects.

[0029] Suitably, the accumulator frame includes a shut-off valve to isolate the hydraulic system from the auxiliary pump as required. This prevents fluid from returning to the tank during operation of the auxiliary pump.

[0030] In another embodiment, the present invention is directed to a method of repairing or maintaining a jaw crusher having a motor providing a primary power source to a main hydraulic pump of the jaw crusher, a crusher frame supporting a fixed jaw and a movable jaw defining a crushing chamber, a crossbeam mounted transversely in the crusher frame, a toggle plate extending between the crossbeam and the movable jaw, and a hydraulic system having a main pump line powered by the main hydraulic pump for moving the movable jaw and clamping the toggle plate, wherein the method includes securing the movable jaw of the jaw crusher in an open position using a turnbuckle secured to the crusher frame. This allows safe repair, installation and removal of other jaw crusher components during repair / removal of the toggle plate.

[0031] In one embodiment, the method further comprises the step of moving the movable jaw to the open position using an auxiliary pump powered independently of the main pump.Therefore, operation of a motor is not required, thereby increasing safety during maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0033] Figure 1 is a side view of a jaw crusher with the jaw crusher service tool of the present invention mounted on the chassis of the jaw crusher, wherein the jaw crusher service tool is in a transport and storage position;

[0034] Figure 2 is from Figure 1 An enlarged isometric view of the fixed and movable jaws and crushing chamber of a jaw crusher viewed from above;

[0035] Figure 3 is an enlarged isometric view of a jaw crusher service tool on the chassis of the jaw crusher as viewed from the exterior of the jaw crusher;

[0036] Figure 4 Viewed from the inside of the jaw crusher chassis Figure 3 An enlarged isometric view of a jaw crusher service tool showing the item / tool ​​storage compartment of the jaw crusher service tool;

[0037] Figure 5 It is separated from the chassis for clarity. Figure 3 A magnified isometric view of jaw crusher maintenance tools;

[0038] Figure 6 It is in the position of supporting objects Figure 5 Isometric view of jaw crusher maintenance tools;

[0039] Figure 7 yes Figure 6 An exploded isometric view of jaw crusher maintenance tools;

[0040] Figure 8 It is rotated around the first hinge axis and the second hinge axis to the object supporting position Figure 3 Isometric view of jaw crusher maintenance tools;

[0041] Fig. 9 is from Figure 8 An isometric view looking inside the chassis of the support frame of a jaw crusher service tool, which rotates through 180 degrees about a vertical pivot axis o To the working position of items inside the chassis below the jaw crusher;

[0042] Fig.10 yes Figures 1 to 9 A magnified view of the accumulator frame with auxiliary pump of the hydraulic system of the jaw crusher, and

[0043] Fig.11 is a side cross-sectional view of a jaw crusher with the jaw crusher in the object support position. Figures 1 to 9 Jaw crusher maintenance tools and Fig.10 The accumulator frame, and in the jaw crusher, the movable jaw is opened by power provided by an auxiliary pump, and the movable jaw is securely held in the open position by an optional turnbuckle. DETAILED DESCRIPTION

[0044] Figure 1 The jaw crusher maintenance tool 10 of the present invention is shown mounted on a mobile jaw crusher 420, and Figure 2An enlarged view of the working part of the jaw crusher 20 of the mobile jaw crusher 420 is shown. As shown, the jaw crusher 20 is mounted on the mobile jaw crusher 420 provided with a chassis 170, on which a fixed jaw 30 and a movable jaw 40 are mounted, which are located in a crusher frame 50 and define a crushing chamber 60 for the material to be crushed. In this embodiment, the jaw crusher tool 10 is mounted on the chassis 170. However, in other embodiments, the jaw crusher service tool 10 can be mounted elsewhere on the crusher frame 50. The jaws 30, 40 are each provided with a wear plate 31, 41, respectively. The upper end of the movable jaw 40 is connected to an eccentric shaft 42 rotatably received in a bearing 43, so that the rotation of the eccentric shaft 42 causes the upper end of the movable jaw 40 to move circularly toward the fixed jaw 30, thereby generating a driving force for crushing the material in the crushing chamber 60. The inertia required for crushing the material fed to the jaw crusher 20 is provided by a counterweight flywheel 21 which is operable to move a jaw crusher eccentric shaft 42 on which a movable jaw 40 is mounted. The jaw crusher motor is operable to rotate the flywheel 21 via a drive belt. As will be appreciated by those skilled in the art, the jaw crusher 20 typically includes a crossbeam and a toggle plate disposed at the lower end of the movable jaw 40. The toggle plate is an extremely heavy item that requires periodic maintenance or replacement. The jaw crusher 1 also includes a hydraulic system 210 (see Fig.10 and Fig.11 ), for moving and positioning the movable jaw 40 to a desired position, such as to a desired closed side setting (CSS) (the shortest distance between the wear plate 31 of the fixed jaw 30 and the wear plate 41 of the movable jaw 40) or another position. As will be explained more fully below, the storable and articulatable jaw crusher service tool 10 of the present invention located on the mobile jaw crusher 420 facilitates safe servicing of the jaw crusher 20 from below by providing easy access and available on-demand support for heavy and cumbersome items such as toggle plates during service operations, while the hydraulic system 210 ensures that the movable jaw 40 can be powered open and powered closed independently of the jaw crusher motor to allow safe and controlled access to the toggle plate. The jaw crusher service tool 10 can also be used as a storage device for other tools.

[0045] Figure 3 and Figure 4 The chassis 170 is shown Figure 1170 and an object support position, wherein the support frame 70 is recessed or retracted in a jaw service tool receiving opening 51 defined in a chassis 170 and an object support position, wherein the support frame 70 extends or protrudes from the jaw service tool receiving opening 51 to receive and support an object during maintenance. The support frame 70 is provided with a crusher mounting seat 80, which may be a removable mounting seat 160 for mounting the jaw crusher tool 10 on the chassis 170 so that the support frame 70 can move about a first hinge axis and a second hinge axis. In the present embodiment, the support frame 70 is in the form of a platform 140 for supporting an object in the object support position. See also Figure 6 .

[0046] For the sake of clarity, Figure 5 The transport position is shown separated from the chassis 170. Figure 3 The jaw crusher service tool 10 of FIG. As shown, the platform 140 of the jaw crusher service tool 10 and the jaw crusher mounting base 80 are joined at the arm 130 from the platform 140 to the crusher mounting base 80. The platform 140 is substantially rectangular in shape and has an upper flat support surface 141 and a contoured rear face 142 defining a tool storage chamber 143 (see also FIG. Figure 4 ). Thus, in the transfer position the jaw crusher tool 10 can also be used as a storage container for operating tools and the like, in particular when the jaw crusher 20 is not in operation and is not undergoing maintenance operations, so that the shown transfer position can also be an effective storage position, i.e. a transport and storage position, if desired.

[0047] The upper flat surface 141 is provided with an upright clamping member 150 at its proximal end and an oppositely disposed L-shaped removable clamping plate 151 at its distal end for clamping an article such as a toggle plate between the clamping member 150 and the clamping plate 151 (see also Figure 6 ). The removable clamping plate 151 may be held in place by bolts 152. Figure 5 As shown, the crusher mount 80 is configured to define a first hinge axis 90 and a second hinge axis 100 so that the platform 140 can be moved between a transfer position and an article support position on the chassis 170. In this embodiment, the first hinge axis 90 is a horizontal pivot axis 110 and the second hinge axis 100 is a vertical pivot axis 120.

[0048] The horizontal pivot axis 110 is defined by a rotatable elongated horizontal tubular member 111 bordering the arm 130 and attached to the arm 130 via a bolt 131, while the vertical pivot axis 120 is defined by a vertically disposed pin 121 extending through a pin opening 122 defined at the proximal end of the tubular member 111. The pin 121 is rotatably supported in a bracket 123 disposed below the tubular member 111, which bracket also forms a part of the mounting seat 80.

[0049] The platform 140 can be pivoted about the horizontal pivot axis 110 from Figure 5 The transfer position shown is rotated to Figure 6 and Figure 7 As shown, in this position, the upper flat surface 141 of the platform 140 is oriented upward to receive an item to be supported by the jaw crusher tool 10, such as a toggle plate, which can be held in place between the clamp 150 and the clamp plate 151 if desired, and the contoured rear face 142 is oriented downward.

[0050] Thus, the jaw repair tool 10 can be rotated about the horizontal pivot axis 110 and the vertical pivot axis 120 from Figure 3 and Figure 4 The transfer position on the jaw chassis 170 shown moves to Figure 8 Item support locations shown.

[0051] If desired, the platform 140 can be rotated 180 degrees about the vertical pivot axis 120. o , so as to protrude into the chassis 170 below the fixed jaw 30 and the movable jaw 40 to provide support for the item as needed, for example, where the toggle plate 180 is to be located below the movable jaw 40 for installation, the toggle plate 180 can be placed on the platform 140, such as Figure 8 As shown, the platform can then be rotated about the vertical pivot axis 120 to position the toggle plate 180 adjacent to the movable jaw 40, as shown. Fig. 9 Thus, removal and replacement of the toggle plate 180 may be performed in a safer manner than has heretofore been possible.

[0052] Fig.10An accumulator frame 210 of a hydraulic system of a jaw crusher 20 is shown, wherein the accumulator frame 210 is provided with an auxiliary pump 230 powered independently of the hydraulic system main pump for enabling movement of the movable jaw 40 during maintenance operations, so that maintenance operations can be performed without activating the jaw crusher motor required to power the hydraulic system main pump. The auxiliary pump 230 may be a battery powered auxiliary pump, such as a 24V service pump. Those skilled in the art will be familiar with conventional hydraulic systems 210 without the accumulator frame 210 / auxiliary pump 230, in which the hydraulic system main pump is in fluid communication with the main pump line 221 to enable toggle cylinder closing.

[0053] As shown, the auxiliary pump 230 is in fluid communication with the second main pump line 222, which enables opening of the toggle clamping cylinder independently of the first main pump line 221 powered by the main pump, i.e., pushing the toggle clamping cylinder piston away from the toggle plate so that the toggle plate is released and can "fall out". Therefore, unlike the known operation of the movable jaw 40 in the known jaw crusher, the toggle plate can be removed and the movable jaw 40 can be powered to open. As shown, the accumulator frame 210 is also provided with an accumulator pressure sensor 360 and a toggle cylinder pressure sensor 370. A shut-off valve 390 is also provided in the accumulator frame 210 to isolate the hydraulic system from the auxiliary pump 230 as required and to prevent fluid from returning to the tank during operation of the auxiliary pump 230. Once the maintenance operation is completed, the shut-off valve 390 is opened to allow fluid to flow during normal operation, so that after the shut-off valve 390 is opened, the toggle clamp cylinder piston closes under gravity, i.e., the captured energy is dissipated, so that the oil returns to the tank, and the pressure sensor 370 can detect whether the shut-off valve 390 is open or closed. However, when the main hydraulic pump is used, the cylinder can be powered by the hydraulic system to open and close / clamp the toggle plate for crushing operations. In short, with the auxiliary pump 230, the movable jaw 40 can be kept open as required and will not be closed due to the return of hydraulic fluid through the second main pump pipeline 222 when the motor is de-powered. This results in a significant improvement in the safety of the operator performing maintenance and maintenance operations. Another optional safety enhancement is that the shut-off valve 390 can be part of a lock out tag out safety procedure.

[0054] Fig.11 Shown with Figures 1 to 9 A similar jaw crusher 20 is provided with a jaw crusher maintenance tool 10 in an article supporting position and Fig.10accumulator frame 210 (not shown). Like reference numerals denote like components. As shown, the movable jaw 40 is opened by power provided by the auxiliary pump 230, as previously described. However, to further enhance personnel safety, the movable jaw 40 can be further secured in a fixed open position by an optional turnbuckle 400. The turnbuckle 400 is mounted below the toggle plate 180 and the associated toggle clamping cylinder 410 and is secured at each end to the underside of the crusher frame 50 and the movable jaw 40 on either side of the toggle plate 180.

[0055] The accumulator frame 210 may be located on the crusher frame 50 to ensure faster response time for shock attenuation and reduction of water hammer effects.

[0056] project

[0057] Item 1. A jaw crusher service tool 10 for supporting an article 15 during service of a jaw crusher 20 comprising a fixed jaw 30 and a movable jaw 40, wherein the fixed jaw 30 and the movable jaw 40 are mounted in a crusher frame 50 and define a crushing chamber 60 for material to be crushed, the service tool 10 comprising: a support frame 70 for supporting the article 15, and a jaw crusher mounting base 80 attached to the support frame 70 for mounting the service tool 10 on the jaw crusher 20, The support frame 70 is movable about the first articulation axis 90 and / or the second articulation axis 100 between a conveying position on the jaw crusher 20 and a position for supporting the object 15 .

[0058] Item 2. The jaw crusher service tool 10 of claim 1, wherein the support frame 70 includes a tool storage compartment 143 for storing items in a transport and storage position.

[0059] Item 3. The jaw crusher service tool 10 according to claim 1 or 2, wherein the first articulated shaft 90 comprises a horizontal pivot shaft 110.

[0060] Item 4. The jaw crusher service tool 10 according to any one of claims 1 to 3, wherein the second articulated shaft 100 includes a vertical pivot shaft 120.

[0061] Item 5. The jaw crusher service tool 10 according to claim 4, wherein the mounting seat 80 defines the horizontal pivot axis 110 and the vertical pivot axis 120.

[0062] Item 6. The jaw crusher service tool 10 according to any one of claims 1 to 5, wherein the support frame 70 includes a platform 140.

[0063] Item 7. The jaw crusher maintenance tool 10 according to any one of claims 1 to 6, wherein the support frame 70 includes object clamping members 150, 151 for clamping the object 15.

[0064] Item 8. The jaw crusher maintenance tool 10 according to any one of claims 1 to 7, wherein the jaw crusher mounting seat 80 is a detachable jaw crusher mounting seat 160.

[0065] Item 9. The jaw crusher maintenance tool 10 according to any one of claims 1 to 8, wherein the jaw crusher mounting seat 80 is configured to be mountable on a crusher chassis 170 or a crusher frame 50.

[0066] Item 10. A jaw crusher 20 comprising the jaw crusher maintenance tool 10 according to any one of claims 1 to 10.

[0067] Item 11. The jaw crusher 20 according to claim 10, wherein the jaw crusher 20 comprises: A motor, the motor providing a main power source to a main hydraulic pump of the jaw crusher 20; a crusher frame 50 supporting a fixed jaw 30 and a movable jaw 40 defining a crushing chamber 60; A cross beam, which is transversely mounted in the crusher frame 50; a toggle plate extending between the cross beam and the movable jaw 40, a hydraulic system having a main pump line 221 powered by the main hydraulic pump for moving the movable jaw 40 and clamping the toggle plate, and an auxiliary main pump line 222 powered by the main hydraulic pump for moving the movable jaw 40 and releasing the toggle plate; The hydraulic system includes an auxiliary pump 230 , which is powered independently of the main pump to achieve movement of the movable jaw 40 .

[0068] Item 12. The jaw crusher 20 according to claim 11, wherein the auxiliary pump 230 comprises a battery-powered auxiliary pump 240.

[0069] Item 13. The jaw crusher 20 of claim 12, wherein the battery powered auxiliary pump 240 is a 24 V maintenance pump.

[0070] Item 14. The jaw crusher 20 according to claim 12 or 13, wherein the auxiliary pump 230 is located in an accumulator frame 210 on the crusher frame 50.

[0071] Item 15. The jaw crusher 20 of claim 14, wherein the accumulator frame 210 includes a shutoff valve 390 to isolate the hydraulic system from the auxiliary pump 230 as needed.

Claims

1. A jaw crusher maintenance tool (10) for supporting a toggle plate during maintenance of a jaw crusher (20), the jaw crusher (20) comprising a fixed jaw (30) and a movable jaw (40), the fixed jaw (30) and the movable jaw (40) being mounted in a crusher frame (50) and defining a crushing chamber (60) for material to be crushed, the maintenance tool (10) comprising: a support frame (70) for supporting the toggle plate, and a jaw crusher mounting seat (80) rotatably attached to the support frame (70) for mounting the service tool (10) on the jaw crusher (20); The support frame (70) is movable about a first articulated axis (90) and / or a second articulated axis (100) between a conveying position on the jaw crusher (20) and a position supporting the object (15).

2. The jaw crusher maintenance tool according to claim 1, wherein: The service tool (10) is configured to be rotatable to protrude laterally into the crusher frame (50) to reach under the fixed jaw and the movable jaw to provide support for a toggle plate under the movable jaw for installation.

3. The jaw crusher maintenance tool according to claim 1 or 2, wherein: The service tool (10) is configured to protrude laterally from the crusher frame in the support position to receive and support a toggle plate during service.

4. The jaw crusher maintenance tool (10) according to any one of claims 1 to 3, wherein: The support frame (70) includes a tool storage compartment (143) for storing items in transport and storage positions.

5. The jaw crusher maintenance tool (10) according to any one of claims 1 to 4, wherein: The first hinge axis (90) comprises a horizontal pivot axis (110).

6. The jaw crusher maintenance tool (10) according to any one of claims 1 to 5, wherein: The second hinge axis (100) comprises a vertical pivot axis (120).

7. The jaw crusher maintenance tool (10) according to claim 6, wherein: The mounting seat (80) defines the horizontal pivot axis (110) and the vertical pivot axis (120).

8. The jaw crusher maintenance tool (10) according to any one of claims 1 to 7, wherein: The support frame (70) comprises a platform (140).

9. The jaw crusher maintenance tool (10) according to any one of claims 1 to 8, wherein: The support frame (70) comprises an article clamping member (150, 151) for clamping an article (15).

10. The jaw crusher maintenance tool (10) according to any one of claims 1 to 9, wherein: The jaw crusher mounting seat (80) is a detachable jaw crusher mounting seat (160).

11. The jaw crusher maintenance tool (10) according to any one of claims 1 to 10, wherein: The jaw crusher mounting base (80) is configured to be mountable on a crusher chassis (170) or a crusher frame (50).

12. A jaw crusher (20), comprising the jaw crusher maintenance tool (10) according to any one of claims 1-11.

13. The jaw crusher (20) according to claim 12, wherein: The jaw crusher (20) comprises: A motor, the motor providing a main power source to a main hydraulic pump of the jaw crusher (20); a crusher frame (50), the crusher frame (50) supporting a fixed jaw (30) and a movable jaw (40), the fixed jaw (30) and the movable jaw (40) defining a crushing chamber (60); A crossbeam, the crossbeam being transversely mounted in the crusher frame (50); a toggle plate extending between the cross beam and the movable jaw (40), a hydraulic system having a main pump line (221) powered by the main hydraulic pump for moving the movable jaw (40) and clamping the toggle plate, and an auxiliary main pump line (222) powered by the main hydraulic pump for moving the movable jaw (40) and releasing the toggle plate; The hydraulic system comprises an auxiliary pump (230), and the auxiliary pump (230) is powered independently of the main pump to achieve movement of the movable jaw (40).

14. The jaw crusher (20) according to claim 13, wherein: The auxiliary pump (230) includes a battery-powered auxiliary pump (240).

15. The jaw crusher (20) according to claim 14, wherein: The battery powered auxiliary pump (240) is a 24V maintenance pump.

16. The jaw crusher (20) according to any one of claims 13 to 15, wherein: The auxiliary pump (230) is located in an accumulator frame (210) on the crusher frame (50).

17. The jaw crusher (20) according to claim 16, wherein: The accumulator frame (210) includes a shutoff valve (390) to isolate the hydraulic system from the auxiliary pump (230) as required.

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