JP2729847B2 - Single swing jaw crusher with unobstructed supply opening - Google Patents

Description

BACKGROUND OF THE INVENTION The present invention generally relates to the production of crushable materials, such as rock, in a crushing chamber formed below a top feed opening between a large stationary jaw and a vibrating swing jaw. The present invention relates to a single swing jaw type crushing device for crushing. More particularly, the present invention relates to a single swing jaw crusher having a cantilever swing jaw design exclusively for generating compressive crushing forces between the jaws.

Single swing jaw rock crushers are well known and have been used for many years. The basic principle of this type of crusher is to use crushable materials such as rocks.
The crushing chamber located between the large jaws is gravity fed, and only one of these jaws is driven as a swing jaw around a long hinge pin in a rapid oscillating motion (generally in the range of 300-400 rpm). The customary swing jaw design is
Cantilever design (often referred to as a "gooseneck" swing jaw)
And a straight jaw design. In both cases, the hinge structure of the swing jaw extends over the top of the crusher to form a top feed opening of the crusher that supplies crushed material into the crushing chamber in a region forward of the hinge axis of the swing jaw.

The main difficulty with cantilevered swing jaw designs is that the hinge pin of the swing jaw is inwardly cantilevered at the top of the crusher, so that the hinge pin and the swing jaw structure itself obstruct the crusher feed opening.
Rock that is too large to handle and must be manually removed or broken from the feed opening tends to be supplied by the user into the crusher. In large capacity equipment, where oversized rocks are typically in the range of 4 to 10 tons, auxiliary equipment such as large pneumatic jack hammers must be used for this purpose. When access to the supply opening is constrained by a swing jaw hinge structure, as in a cantilevered swing jaw design, it may be difficult to insert the ends of these devices at an angle that efficiently accomplishes their work. Become.

The above disadvantages of cantilevered swing jaw designs generally do not exist in linear swing jaw crushers, such as, for example, Blake-type and overhead eccentric crushers. This type of crusher includes a swinging jaw that extends linearly at a downward angle from a full length hinge above its head. Unlike the cantilever jaw design, the jaw hinge is generally located closer behind the crusher, so the hinge structure does not create a substantial obstruction to the supply opening.

However, there are known and significant disadvantages with straight jaw designs. In the case of a brake-type crusher with a toggle drive at the bottom of the jaw, the movement of the swing jaw pushes the rock upwards, rubs it against the jaw and rapidly wears the jaw plate, and the top of the crushing chamber has a substantial Joe's movement does not exist. In the case of an eccentric overhead crusher in which the jaws are driven by eccentric bearings at their top ends, the moving jaws press the rock both upwards and downwards with the same result. In the case of a cantilevered swing jaw design, the hinge axis of the swing jaw lies in a plane which cuts through the crushing chamber, so that a linear and exclusively compressible crushing force is generated. This substantially reduces jaw plate wear and generally allows the swinging jaws to operate at greater strokes per minute for larger volumes and at lower power consumption. Thus, despite the fact that the hinge pin of the inwardly cantilevered swing jaw limits the size of the supply opening to the forward region of the hinge axis of the jaw.
The cantilever design offers significant advantages, giving it a wide range of applications.

A single swing jaw crusher of the cantilever construction is shown in U.S. Pat.No. 4,398,674 to George S. Dreman, wherein the feed opening located in front of the hinge pin of the swing jaw is generally of oversized material. Is found to be extremely difficult to remove from the crushing chamber.

The present invention provides a single swing jaw rock crushing device,
This device has a cantilevered swing jaw design as shown, for example, in the Dreman patent (i.e., a single swing jaw crusher with the hinge axis of the swing jaw positioned above the crushing chamber), but this device is of the conventional type. Eliminates the problems experienced with cantilevered jaw designs (i.e., having a constrained supply opening). In the present invention, an enlarged supply opening is formed without sacrificing the advantages of a cantilevered jaw design, ie, providing longer jaw plate wear, greater capacity, and lower power consumption. Further, the present invention provides a cantilevered single swing jaw crusher, wherein the feed opening can be more easily accessed by a pneumatic device for breaking oversized rocks, and furthermore, a cantilevered swing jaw is suitable. It is relatively easy to manufacture and assemble at jaw angles.

SUMMARY OF THE INVENTION The single swing jaw crusher of the present invention comprises a fixed frame, includes a top feed opening and a swing jaw, and includes a cantilevered upper hinge and a lower jaw section. The lower jaw section of the swing jaw
A gravity-fed crushing chamber is supported within the stationary frame such that it is formed between the stationary frame and the opposed stationary jaws, and hinge means for the swing jaws are located at the top of the stationary frame and hinge axis of the swing jaws. Are located in a plane passing through the crushing chamber required to generate a linear crushing force. According to the present invention, the upper hinge section of the swing jaw and its hinge means,
A supply opening is formed and positioned to extend behind the hinge axis of the swing jaw.

According to an embodiment, the hinge means of the swing jaw comprises two separate lateral hinge supports, which are mounted on the top of the side plate structure of the fixed frame so as to straddle the top feed opening of the frame. The two lateral support arms straddling the lateral side plate structure of the fixed frame form the upper hinge section of the swing jaw that screws into the lateral hinge support. By spanning the hinge means of the swing jaw and the upper hinge section over the feed opening and the frame of the crusher, there is no obstructive structural member in the top region within the crusher near the hinge axis of the swing jaw.

In conventional crusher designs, the entire cantilever swing jaw is machined as a single structure with a heavy box beam structure. With such a unitary construction, there is no final adjustment capability to correct misalignment of the bottom of the jaw with the seat for the toggle drive member. In a preferred embodiment of the invention, the cantilever swing jaws are machined as parts. In particular, the lateral support arm of the swing jaw and the lower jaw section are connected to each other by an elongated connecting member fixed to the upper end of the lower jaw section in the middle of both ends. During assembly, the lateral support arms are preferably mounted, for example, by welding to two connecting member ends which extend outside the side plate structure of the fixed frame. This mounting creates an adjustment angle between the upper hinge and the lower jaw section of the swing jaw to swing the jaw relative to the toggle drive mechanism (which is described in more detail below and drives the lower end of the jaw). Is performed so as to properly and accurately position the bottom end. It is conceivable that the elongate connecting member is a metal tube or has another cross-sectional shape, and that the swing jaws are assembled and mounted during the final assembly stage of the crushing device.

In another aspect of the invention, a shock absorbing support wall means is provided between the side plate structures of the fixed frame and behind the transverse hinge support of the swing jaws. In normal operation, rock is often fed into the crusher feed opening at a high velocity and in a horizontal trajectory such that the rock strikes the crusher structure below and behind the feed opening. In conventional designs, the rock strikes the top hinge section of the swing jaw directly, applying a significant impact force to the swing jaw bearing. The shock absorbing wall means of the present invention are provided to absorb these impact forces and reduce the frequency of bearing replacement.

In an embodiment, the shock-absorbing wall means behind the supply opening is provided for an impact plate whose upper end is screwed to a fixed frame and for a bottom without an impact plate fixed to the swing jaw or the impact plate itself. And elasticity stopping means. This type of shock absorbing wall means tends to absorb the impact of the incoming projectile due to the resilience of the impact plate around the hinge mount against the fixed frame.

Accordingly, it will be seen that a primary object of the present invention is to provide a single swing jaw crusher having a cantilever swing jaw design that does not obstruct the crusher feed opening. It is yet another object of the present invention to provide a swing jaw design that is relatively easy to manufacture and assemble in detail so that the jaw ends can be accurately aligned with the toggle drive portion of the jaw. Yet another object of the present invention is to provide a single swing jaw crusher design that absorbs the impact of a high velocity projectile supplied through a crusher supply opening to reduce wear on the swing jaw bearing. It is in.

Other objects of the present invention will become apparent from the following description of the detailed embodiments of the present invention with reference to the accompanying drawings.

DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a single swing jaw crushing device made according to the present invention, FIG. 2 is a side sectional view of the single swing jaw crushing device shown in FIG. FIG. 1 is a partial cutaway view of a swing jaw made according to the present invention, showing an alternative structure and assembly of a connecting member for connecting an upper support arm and a lower jaw section of the swing jaw, and FIG. 4 is a plan view of the single swing jaw apparatus shown in FIG. 2 and FIG. 4 is a schematic view of the single swing jaw apparatus of FIG. 5 shows the lateral position and arrangement of the upper support arm, the lower jaw section, the coupling member and the impact plate of the impact absorbing support wall means with respect to FIG. It is a side cross-sectional view of the lifting body.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the drawings, FIGS. 1 and 2, which best illustrate the overall structure of the present invention, illustrate a single swing jaw crusher generally designated by the reference numeral 11, wherein: Crushing occurs inside the large fixed frame 13. The fixed frame has horizontal front and rear sturdy supports 19,21,23, which are steel side plates 25,27 and bottom outer legs used to bolt the crusher to the wood skid or platform. Section 29 and outer beam weld 31 for reinforcement
And extends between the two lateral side plate structures 15, 17 constituted by In order to provide a steel frame with a strength suitable to withstand the impact force generated by the working crusher,
The frames must be welded together and stress relieved before machining.

Referring to FIG. 2, it can be seen that the fixed frame supports two opposing and substantially vertically oriented jaws 33,35. A generally vertically oriented crushing chamber 37 of gravity feed formed between the jaws and inclined downward to a narrow discharge end 39 at the bottom of the crushing device provides a top feed opening in a fixed frame for crushable material such as rock. Accepted via part 41. The width of the top feed opening is generally defined by the separation of the steel side plates 25, 27 of the frame side plate structure,
The longitudinal dimension of the top feed opening is generally defined by a structural member surrounding the top of the two opposing jaws, which will be described in more detail below. As mentioned above, one of the objects of the present invention is to maximize the size of this top feed opening to introduce larger rocks into the inclined crushing chamber and to remove oversized rocks or to manually crush the crushing chamber. To be easily accessible.

In order to appropriately reinforce the tops of the side plates 25 and 27 in the vicinity of the supply opening, the welding portion 31 in the side plate
Triangular box beam structure at the top of the side plate that defines
With 32. Pipe grooves 34 penetrate the box beam structure to accommodate plow bolts, thereby securing the replaceable wear plate 36 inside the teal side plate. A bolt hole 38 is preferably provided in the side plate above the inner wear plate to allow removal of the supply chute above the supply opening.

Of the two opposing jaws 33, 35, the jaw 33 shown on the left side of FIG. 2 is a stationary or fixed jaw, which has spring-loaded retaining bolts 45, 47 for securing the upper and lower solid fronts of the frame. The support members 19 and 21 are fixedly in contact with each other. The jaw 35 shown on the right side of FIG. 2 is a cantilever swinging jaw which is hingedly suspended from the top of the crushing device by hinge means, which is mounted on the top of the fixed frame along a common horizontal hinge axis A. And two horizontal hinge supports 49 and 51. The upper hinge section 53 of the swing jaw has two lateral support arms 55,5
7, which are connected to the lateral hinge support by the side plate structure 15,
Screw on the outside of 17. Unlike the unitary hinge and jaw structure in conventional designs, the lateral support arm of the present invention and its lateral hinge support straddle the crusher frame at the top feed opening of the frame and extend below the hinge axis A and It does not obstruct the top region 58 between the side plates of the frame behind it.

The swing jaw further comprises a lower jaw section 59 facing the fixed jaw to form a crushing chamber 37. 4th
As best seen in the figures and described in more detail below, the lower jaw sections located between the side plate structures of the frame provide for a lateral support arm located outside the side plates to
They are connected by an elongated connecting member 61 having laterally extending ends 63 and 65.

As shown in FIG. 2, both the fixed jaw and the lower jaw section of the swing jaw include jaw plates 71, 73 of a suitable hard material such as, for example, Hadfield manganese steel. For example, the illustrated retaining bolts 75,77
Such holding bolts removably hold the jaw plate to its supporting jaw frames 67, 69 so that it can be replaced periodically. Similarly, a wear plate 36 fixed inside the steel side plates 25, 27 acts as a replaceable lining for the sides of the crushing chamber.

As further shown in FIG. 2, the swing jaw is driven about its hinge axis by a toggle drive system, generally designated by reference numeral 81, which drive system includes a toggle seat behind a lower end of the swing jaw. Engage at 82 and drive the swing jaws with a quick short oscillating motion caused by the pivoting action of the toggle plates 83,85. The toggle plate is a compression spring 91 disposed below the toggle plate with respect to the lower side of the rotary eccentric shaft 89.
It is reciprocated by the pitman 87 brought into contact with. Another jaw holding member 92, consisting of a holding rod 93 and a compression spring 95 that reacts against a cross channel member 97 of the stationary frame, is attached to a bracket 99 behind the lower jaw section of the swing jaw to provide a lower jaw. Hold the jaw section against the inner toggle plate 83. The toggle drive portion includes the force of the outer toggle plate 85 that abuts against the lower right strong support member 23 and the lower compression spring 91.
The holding force is firmly held by the combined force of the holding member 93.

The toggle drive system is enclosed within a housing 101, on both sides formed by angled transverse walls 103, 105, which extend between the steel side plates 25, 27 of the frame. An oil pan 107 is secured under the housing and a removable cover plate 109 is secured to the top which allows for quick and easy access to the toggle drive mechanism. Linear hole bearing housing in steel side plate
The strong self-aligning roller bearing 111 attached to 110,
The eccentric shaft 89 is supported. An oil bath is provided in the housing by a suitable oil circulation system (not shown) to lubricate the roller bearings of the shaft and other components of the toggle drive system. The flexible diaphragm 114 forms a fluid seal between the swing jaw toggle seat 82, the inner housing wall 102, and the oil pan 107.

The toggle drive system is driven by an outer drive motor (not shown) belted directly to the flywheel 115. Generally, the flywheel is provided with a mechanical safety release of a known design to allow the flywheel to rotate freely with a predetermined amount of overpressure and to remove the driving force from the eccentric shaft, thus stopping the crushing action of the device. This type of overpressure is often caused by non-fracturable material, for example iron ingots, which are introduced into the crushing chamber 37, which can be inserted into the crushing chamber via a supply opening after a stop by a long bar or pneumatic device. Removed from the crushing chamber. As mentioned above, the relative inaccessibility to the crushing chamber is affected by the dimensions of the supply opening, and the provision of a large unobstructed supply opening according to the present invention facilitates access to the crushing chamber. You.

To explain the assembly of the swing jaw of the present invention,
The elongated connecting member for the upper hinge and lower jaw sections of the swing jaw is comprised of a steel tube having a length sufficient to extend beyond the side plate structure of the fixed frame. Although the steel tube is shown as having an outer diameter approximately equal to the width of the top of the jaw frame, it will be appreciated that the invention is not so limited.
For example, it may be desirable to increase the width of the jaw frame relative to the tube diameter to increase the mass of the swing jaw. In such a case, the gap between the tube and the jaw frame can be bridged by a suitable welding rib structure.

When assembling, refer to the steel tubes 61 by reference numerals 117 and 11.
At nine locations, weld over the top of the upper end of swing jaw frame 69 and, after appropriate angle adjustment of the lower jaw section to the support arm, the extended end of tube 63 is then welded to the support arm. By providing a partially welded swing jaw, the fabrication and assembly of the swing jaw according to the proper details is substantially simplified as compared to fabricating the jaw as a unitary structure. This is because the adjustment of the jaw angle can be performed during final assembly to align the toggle seat 82 with the end of the toggle plate 63. If these parts are not properly aligned, the swinging motion of the swing jaws will cause the diaphragm 114 to tear.

FIG. 2A shows an alternative arrangement for the connecting members of the swinging jaws, in which here instead of the cylindrical tube shown in FIG.
Work from 5 and weld them to the upper end of the lower jaw section. As shown in FIG. 2A, the front wall portion 126 of the jaw frame extends upward to form a front wall portion for the connecting member between the side plate structures of the fixed frame. Outside the side plate structure, the laterally extending ends of the elongated steel plates 121, 123, 125 form three sides at the extended end of the box-shaped structure of the connecting member. A separate short steel plate section (not shown) can be used to enclose the box structure outside the side plate.

The swing jaw according to FIG. 2A is assembled in the same way as the swing jaw according to FIG. 2, in which the lower jaw section is first worked by welding its parts and then the extension box end of the box-shaped coupling member Is welded to the lower end of the support arm in the proper rotation direction.

In order for the connecting member to penetrate and engage the support arm through the opening 127 in the side plate structure, an opening that not only allows the connecting member to freely rotate but also forms a clear run sufficient to prevent a pinch point. It is necessary to measure the size of the part, that is, not to provide a small gap that damages the finger of the hand. In conventional sized machines, the swing jaw motion amplitude at this joint is in the range of approximately ± 1/4 inch. A clearance of about 1.5 inches appears to be suitable for preventing pinch points.

As best shown in FIG. 2, the fixed frame of the crusher has a removable steel buttress 129 and a support cover plate 130 that encloses the area behind the connecting members of the swing jaws. This steel buttress, whose lower end is attached to the transverse beam 133 by fixing bolts 131 and whose upper end is attached to a flange 134 located at the top of the vertical edge 135 of the steel side plate, is removed to mount the swing jaws to the fixed frame. can do. In addition, the buttress forms an upper cross member 137 from which shock absorbing wall means can be secured as described below.

As mentioned above, the rock is supplied to the supply chamber of the crusher via the top supply opening 41. The rock is typically supplied from a supply chute 141 via a supply opening, which can be filled directly from a conveyor system or from a large soil excavator or vehicle. Generally, the rock slides on the chute at a relatively high speed in a horizontal direction sufficient to cause the rock to strike the structure of the swinging jaw facing the chute. In order to absorb the impact force of the incoming rock and to prevent the large impact force from being transmitted directly to the bearings of the lateral hinge support, a shock absorbing support wall means is provided for the connecting member of the swing jaw and the lower jaw of the swing jaw. Place before the top of the section.

As best shown in FIG. 2, the shock absorbing support wall means comprises a vertical impact plate 143 which is attached to the cross member 137 of the buttress 129 near the top of the fixed frame.
Mounted by 5, these hinges allow for a resilient movement at the top of the plate. The impact plate hangs downwardly from its double hinge axis down to a point where its free end 147 is located near the top of the lower jaw section, thus covering the connecting member 61 of the swing jaw. A rubber block 149 or other resilient stopping means as an elastic material is fixed to the connecting member to form a stop for the free end of the impact plate. Thus, high-speed rock supplied in high horizontal trajectory through the supply opening strikes the impact plate and then deflects the impact force mainly by repulsion against the shock-absorbing rubber block.

It is also conceivable that the shock absorbing wall means is implemented in other ways, for example by fixing the rubber block to a second lower transverse member welded to the fixed frame, so that the force of the rebound shock plate is applied to the fixed frame. It can also be transmitted directly.

FIG. 5 shows one of the transverse hinge supports hinged to the swing jaw support arms 55,57. The transverse hinge support is mounted on a hinge axis "A", which is located in a central plane passing through the crushing chamber to apply the appropriate linear crushing force (indicated by the letter "C" in FIG. 2). ]. By arranging a lateral hinge support fixed outside the side plate structure of the fixed frame, the top feed opening of the fixed frame is provided with a region between the lateral hinge supports and the forward direction of the impact plate 143. It is effectively expanded. This also passes through the top feed opening of the device also the center plane where the hinge axis of the transverse hinge support is encountered.
In the case of a conventional single swing jaw rock crusher with a continuous hinge pin to block the top feed opening, the longitudinal dimension of the feed opening is constrained to the area in front of the hinge axis, making the vertical opening almost 30% effective. To reduce.

Still referring to FIG. 5, the lateral hinge structures 49,5
1 is a single shear hinge support, a short hinge pin 1
51, which is fixed in a fixed horizontal position at its inner end 153 by a hinge block 155, which is preferably a steel side plate 25,2 of a fixed frame side plate structure.
7, for example, by welding the bottom 157 of the hinge block to the top edge 162 of the side plate (see FIG. 1) and the top of the vertical support beam 163 of the outer beam weld 31. Retaining pins 159 in hinge block cover 160 serve to hold hinge pins 151 in a rotationally locked position, and side wear plates 36 prevent the inner ends of hinge pins from being damaged or impacted by incoming rock. A top extension 164 is provided.

The lateral hinge supports 49, 51 each have a sleeve bearing 165 located on a bearing hub 169 formed at the hinged end of each of the swing jaw support arms.
(Preferably a bronze sleeve bearing).
(The support arm of the swing jaw is the outer end of the hinge pin.
It will be seen that the 167 hinges at its bearing hub). The bearing hub is provided with means for lubricating the sleeve bearing. In detail, the lubricant tank 171
To provide fluid communication through a passage 173 to an annular and longitudinal flow path in the sleeve bearing. The fluid reservoir preferably comprises a threaded pipe section 172 (eg, a 2.5 inch pipe welded to the top of the bearing hub) and a threaded pipe cap 174 that can be easily removed to clean the reservoir. Another auxiliary reservoir 180 is provided in the outer end 167 of the hinge pin by a recess 181 which is secured by bolts 179 to an outer end cap 177 secured to the end of the bearing hub. This auxiliary fluid reservoir also provides a lubrication point to the outer end surface 183 of the hinge pin and supplies lubricant directly to the sleeve bearing via the longitudinal passage 176 of the sleeve. Suitable vents and drain plugs 182, 184 can be provided on the end cap 177 to drain and exhaust the auxiliary reservoir.

The bearing hub 169 of the movable support arm is sealably connected to the fixed inner hinge block 155 by an intermediate fixed bronze thrust washer 185. Secure with the inside diameter of the arm hub. The hose clamp 189.191 firmly secures the elastomeric diaphragm in place and the O-rings 193,195 form a fluid seal between the thrust washer, the hinge pin and the hub.

The seal arrangement is designed to form a self-lubricating bearing arrangement for the lateral hinge supports of the swing jaws, one of which supports the extreme stresses which may damage the sleeve bearings or exhibit the oscillating motion of the large swing jaws. Eliminate foreign particles that stagnate over time under conditions. It will be appreciated that other bearing structures may be provided. One example is to use roller bearings instead of mechanical sleeve bearings. However, the load distribution on the bearing surface of roller bearings is worse than that of sleeve bearings, and therefore the roller bearings tend to wear out more quickly.
Another example is a spherical sleeve bearing, in which a spherical contact surface allows lateral and rotational movement of the support arm.
In theory, this type of bearing is superior to the linear sleeve bearing of the embodiment, but its implementation is much more expensive.

Thus, the present invention provides an improved rock breaking device having a cantilever swing jaw design, and it will be appreciated that the swing jaws of the device may be much easier to assemble than in a conventional integral cantilever swing jaw design. . Unlike the continuous hinge pin structure in a conventional crusher, the swing jaws of the present invention include a lateral support arm structure and a lateral hinge support, which form an enlarged supply opening for the crusher to provide a single layer access to the crushing chamber. Enables good access. It will further be seen that the rock breaking device according to the invention absorbs the impact of the incoming rock so as to increase the life of the swing jaw bearing. While the invention has been described in considerable detail, it will be understood that the invention is not limited to these details only.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Green Row, Earl Reed, Claremont Av Eniu 56, Olinda, 94563, California, United States 56

Claims (11)

(57) [Claims] 1. A fixed jaw and a cantilevered swing jaw are supported in a fixed frame such that a crushing chamber is formed below a top feed opening in the fixed frame, wherein the cantilevered swing jaw is a lower jaw. A section, and an upper lateral support arm for screwing the swing jaw to a lateral hinge support on the stationary frame, wherein the horizontal jaw axis is positioned higher than the crushing chamber. A single hinged support is disposed on and adjacent to the opposing surface of the top feed opening such that the top feed opening of the fixed frame is not blocked in the area of the hinge axis. A swing jaw crushing device, wherein opposed side plate structures are provided in the top supply opening;
The single swing jaw crushing device of claim 1 wherein the single lateral swing support is substantially covered and protected. 2. The single swing jaw device according to claim 1, wherein said side plate structure extends upward from the area of the crushing chamber to the area of the swing jaw axis. 3. The fixed frame includes a steel side plate,
The single swing jaw device according to claim 1, wherein the steel side plate forms at least a part of the side plate structure. 4. The lateral hinge support further comprising a removable wear plate mounted on a steel side plate of the fixed frame, wherein the wear plate extends upwardly into the area of the hinge axis. 4. The single swing jaw device according to claim 3, wherein the single swing jaw device covers and protects the first swing jaw. 5. The single swing jaw device of claim 1, wherein the separation of the side plate structures generally defines the width of a top feed opening of the crushing device. 6. The rearward extension of said top feed opening is limited by shock absorbing support wall means mounted on said stationary frame behind said lateral hinge support.
The impact force of the crushable material sent into the crushing device through the top feed opening, instead of by the swing jaws and swing jaw hinge supports of the device, the support wall means attached to a fixed frame; A single swing jaw device according to claim 1, characterized in that it can be at least partially absorbed by a fixed frame. 7. The invention of claim 6 wherein said shock absorbing support wall means includes an impact plate that generally extends from near a top of said fixed frame to near a top of a lower jaw section of said swing jaw. A single swing jaw device as described. 8. The invention of claim 6 wherein said impact plate has a free bottom end and said shock absorbing support wall means includes resilient stop means for a free bottom end of said impact plate. A single swing jaw device as described. 9. The fixed frame includes an upper cross member extending between the side plate structures behind a hinge axis of the transverse hinge support, and wherein the shock absorbing support wall means includes Including at least one hinge device having a horizontal hinge axis for attaching a hinge between a top and an upper cross member of the fixed frame, whereby input crushed material sent through the top feed opening has been struck. 7. The single swing jaw device according to claim 6, wherein the impact plate warps with respect to a horizontal hinge axis of the hinge device. 10. A fixed jaw and a cantilevered swing jaw are supported in a fixed frame having opposing side plate structures, and a crushing chamber is formed between said side plate structures below a top supply opening in said fixed frame. Wherein the cantilevered swing jaw has a lower jaw section, and an upper lateral support for hinged the swing jaw to a lateral hinge support on the fixed frame, and is located higher than the crushing chamber. To define a horizontal hinge axis, the lateral hinge support is disposed proximate to and on an opposing surface of the top supply opening, and the top supply opening of the fixed frame is located within the area of the hinge axis. A single swing jaw crushing device that is not closed, wherein at least a part of the opposed side plate structure is provided in an area of the top supply opening including an area of the hinge axis, and Shock-absorbing support wall means mounted on a fixed frame and arranged between the side plate structures behind the transverse hinge support are arranged, whereby into the crushing device via the top feed opening. The delivered crushable material is guided into the crushing chamber by the side wall structure and further by the support wall means and the fixed frame attached to a fixed frame instead of by the swing jaws and swing jaw hinge supports of the device. The single swing jaw crushing device, wherein the impact force of the crushing material can be substantially absorbed. 11. The single swing jaw crusher of claim 10, wherein said side plate structure covers said lateral hinge support to prevent crushing material from directly hitting said hinge support.