Hydraulic crusher without rear cover

Abstract

The present invention is an assembly structure without a rear cover, and relates to a structure for making a block into a polyhedron. To this end, the present invention is an assembly structure without a rear cover, in which compressed gas is filled in a space inside a polyhedral block. The present invention relates to a hydraulic breaker without a rear cover, which includes a main control valve receiving fluid supplied from the outside of a polyhedron, and a pilot valve containing a space inside the polyhedron and controlling the main control valve, each double-acting cylinder operated by the main control valve makes a module coupled with a piston rod advance and retreat to make an integrated impact plunger and plunger block module advance, and the compressed gas filled makes the integrated impact plunger and plunger block module rapidly move backward, thereby obtaining an impact force.

Description

Technical Field

[0001] This invention relates to a hydraulic crusher, and more specifically, to a hydraulic crusher with a multi-faceted cylinder assembly structure and no rear cover. Background Technology

[0002] Generally speaking, hydraulic breakers are attached to construction machinery such as excavators and are used for crushing, compacting, and pile driving.

[0003] exist Figure 1 , Figure 2 The hydraulic crusher, which has a quadrilateral exterior and a cylindrical interior, consists of a front cover 300 that houses the chisels 200, a cylinder 400 that houses the impact piston 600, two sealing rings 700, and a rear cover 500 filled with nitrogen.

[0004] The typical driving method of a hydraulic crusher is that if the impact piston 600 receives fluid supplied from the outside and moves forward, the flow path is changed by the switching valve 800, and the impact piston 600 moves backward rapidly due to the pressure of the gas filled in the rear cover 500, thereby obtaining the impact force.

[0005] The impact piston consists of a lower end, a middle end, and an upper end. In order to obtain an effective impact force, the stroke distance of the impact piston must be very long. That is, the length of each of the lower end, middle end, and upper end must be extended. If the stroke distance is increased by 200mm, the length of each of the lower end, middle end, and upper end must also be increased by 200mm. If the upper end bushing and the lower end bushing are also included, the length of the impact piston will be greatly extended, so it is not easy to increase the stroke distance.

[0006] In addition, if the stroke distance of the impact piston increases, the length of the cylinder and the rear cover also increases, resulting in an increase in the size and weight of the overall structure. As a result, when the construction machinery is in operation, not only does the fuel consumption rate and the production cost of the product increase, but there are also many problems such as inconvenience in operation.

[0007] Therefore, Korean Patent No. 10-0820644 discloses a "rear cover structure for a hydraulic crusher", which increases the size of the rear cover to increase the capacity of nitrogen gas filled inside and thus increase the filling pressure.

[0008] This type of crusher also ultimately increases the size of the overall structure, thus causing the problems described above. Summary of the Invention

[0009] Technical issues

[0010] The present invention aims to solve the above-mentioned problems. The present invention manufactures the cylinder block of the hydraulic crusher into an assembled structure without a back head, thereby not only reducing the overall structure, but also designing the impact piston type as an impact ram type without a piston section, which increases the stroke distance, thereby increasing the impact force and shortening the length of the impact ram, thus achieving the effect of reducing costs. Furthermore, the use of a seal on the impact ram only at the impact ram cylinder also has the purpose of reducing costs.

[0011] In addition, the assembly surfaces of the polyhedral panels are sealed, a sealing ring is applied in the plunger cylinder, and compressed gas is filled in the sealed space, thus serving to replace the existing back cover.

[0012] A block guide is provided to prevent the modules containing linear bearing blocks, hinge blocks, push rods, and valve pressing levers from disengaging during forward and backward movements. Multiple linear bearing blocks and linear bearing guides are provided to linearly guide the impact plunger and ramblock module, thus achieving the purpose of ensuring stable reciprocating movement of the impact plunger and ramblock module.

[0013] In addition, the present invention aims to provide a hydraulic crusher without a back cover, wherein the cylinder is made into a detachable polyhedron for replacing internal consumables, so that consumables can be replaced in a timely manner even after long-term use to maintain optimal performance.

[0014] Solution

[0015] According to embodiments of the invention designed to solve these technical problems, the invention may include: a plate having multiple tap and bolt holes, gas inlets and oil inlets machined thereon, and multiple pilot flow passages perforated therethrough for connecting a main control valve and a pilot valve; a main control valve receiving fluid supplied from the outside of the polyhedron; a pilot valve controlling the main control valve within a sealed space inside the polyhedron; an impact plunger integrated with a plunger block module; a plunger cylinder for reciprocating movement of the impact plunger; various double-acting cylinders operated by the main control valve; various modules integrated with piston rods within various double-acting cylinders; block guides preventing the modules from disengaging during forward and backward movement; impact plungers and plunger block modules advancing from the modules; linear bearing guides linearly guiding the modules and the impact plungers and plunger block modules; and a filled compressed gas that pushes the advanced impact plungers and plunger block modules backward to generate an impact force.

[0016] It further includes block guides to prevent the individual modules from detaching when moving forward and backward.

[0017] The assembly surfaces of the polyhedral plates are sealed, and a sealing ring is applied to the plunger cylinder while compressed gas is filled into the sealed space.

[0018] Each module includes a linear bearing block, a hinge block, a push rod, and a valve pressing lever.

[0019] Each double-acting cylinder includes a module that mates with the piston rod.

[0020] The hinge block includes a locking portion that abuts against the protrusion of the plunger block module.

[0021] The two spools inside the pilot valve work in a cross manner with the seesaw as the two valves press the adjusting rods, with the seesaw axis as the reference, each time the spools are pressed from the left and right.

[0022] It further includes a limiting roller that separates the hinge block from the plunger block module.

[0023] Invention Effects

[0024] The hydraulic crusher without a back cover according to the present invention has a cylinder body made into a polyhedral shape to reduce the overall structure, thereby not only reducing manufacturing costs, but also making it easy to disassemble and assemble, thus enabling timely replacement of consumables and maintaining optimal hydraulic crusher performance at all times.

[0025] A sealing ring is applied to the plunger cylinder, which is assembled into a polyhedral structure, and compressed gas is filled into the sealed space to fulfill the function of the exhaust cover.

[0026] In addition, changing the structure of the impact piston to a pistonless impact plunger type increases the stroke distance and improves the impact force of the hydraulic crusher, thereby not only improving work efficiency but also reducing fuel consumption. Moreover, it has the following advantages: it can use linear bearing blocks and linear bearing guides, thereby significantly shortening the length of the impact plunger; and it uses a sealing ring in only one place on the plunger cylinder, thereby reducing manufacturing and management costs. Attached Figure Description

[0027] Figure 1 This is a diagram showing the components of an existing hydraulic crusher.

[0028] Figure 2 This is a diagram showing the stroke range of an existing piston.

[0029] Figure 3 This is a side view of the hydraulic crusher without a rear cover according to the present invention.

[0030] Figure 4 This is a plan view of the hydraulic crusher without a rear cover according to the present invention.

[0031] Figure 5This is a side view of the first piston at the end of its retraction according to the present invention.

[0032] Figure 6 This is a side view of the first piston of the present invention when it is advancing.

[0033] Figure 7 This is a side view of the structure of the first piston before it finishes advancing.

[0034] Figure 8 This is a side view of the first piston at the end of its forward movement according to the present invention.

[0035] Figure 9 This is a detailed diagram illustrating the driving method of the slide of the present invention. Detailed Implementation

[0036] Hereinafter, preferred embodiments of the hydraulic crusher without a rear cover according to the present invention will be described in detail with reference to the accompanying drawings. For reference, in the following description of the invention, the terms referring to the constituent elements of the invention are named in consideration of the function of each constituent element and should not be construed as limiting the technical constituent elements of the invention.

[0037] Reference Figures 1 to 9 The hydraulic breaker without a rear cover according to the present invention is attached to construction machinery such as excavators and is used for crushing, compaction and piling. The hydraulic breaker without a rear cover according to the present invention includes an impact plunger, a plunger cylinder, a plunger block module, a double-acting cylinder, a module, a main control valve, a pilot valve, a seal retainer, various plates, a connecting plug, a linear bearing block, a linear bearing guide, and a block guide.

[0038] The hydraulic crusher without a rear cover includes a plate 100 with multiple connecting plugs 7 and bolt holes (not shown), a gas injection port, an oil injection port, and an oil discharge port (not shown), etc. The assembly surfaces of the plate 100 assembled into a polyhedron are sealed, and a sealing ring 80 is applied to the plunger cylinder 50 to form a closed space to fill with gas.

[0039] The pressure of the filled gas functions to generate impact force by causing the forward impact plunger 40 and plunger block module 60 to move backward rapidly.

[0040] In addition, multiple pilot flow channel holes 6 are perforated on the polyhedral plate 100 to connect the main control valve 70 and the pilot valve 71.

[0041] The main control valve 70 receives fluid supplied from the outside and then supplies the fluid to the interior of the plate 100 through the pilot flow channel 6. The pilot valve 71, which controls the main control valve 70 and the double-acting cylinders 20 and 21, is housed in the interior space of the plate 100.

[0042] Reference Figure 3 and Figure 4 The impact plunger 40 and plunger block module 60, which are integrated together, are advanced by the first and second modules 30 and 31, which are integrated together with the first and second piston rods 10 and 11 that receive fluid supplied from the main control valve 70 and move forward and backward rapidly by gas pressure.

[0043] That is, when the first piston rod 10 and the first module 30, which are integrated together, move forward, the impact plunger 40 and the plunger block module 60 move forward together. If the impact plunger 40 and the plunger block module 60, which have already moved forward, move backward, the waiting second piston rod 11 and the second module 31, which are integrated together, move forward, causing the impact plunger 40 and the plunger block module 60, which are integrated together, to move forward.

[0044] For a more detailed explanation, please refer to [reference needed]. Figure 5 and Figure 6 The first and second modules 30 and 31 include a hinge block 1, a push rod 2, and a valve pressing adjustment rod 5 (the second module 31 also includes the same structure as the first module 30). The first and second modules 30 and 31 are integrated with the linear bearing block 90 and are moved by the linear bearing guide 91 and the block guide 92 when moving forward and backward.

[0045] Through the main control valve 70, the first module 30 and the first piston rod 10 move forward together, and the second module 31 and the second piston rod 11 move backward together. When moving backward, the hinge block 1 in the second module 31 is pressed against the limit rod 3 and stands upright, thereby eliminating interference when the impact plunger 40 and the plunger block module 60 move backward.

[0046] exist Figure 6 In the middle, if the second piston rod 11 advances, the push rod 2 in the second module 31 presses the hinge block 1, so the locking part 1a of the hinge block 1 is pressed against the protrusion 60a of the plunger block module 60 and advances together with the impact plunger 40. Figures 7 to 9 If the advancing hinge block 1 is pressed against the limiting roller 4, then due to the advancement, the hinge block 1 is erected by the limiting roller 4 along the inclined surface 1c formed on the hinge block 1 and separates from the protrusion 60a of the plunger block module 60. The impact plunger 40 and the plunger block module 60, which become one unit, move backward rapidly under the pressure of the filled gas, thereby obtaining an impact force. If the valve pressing adjustment rod 5 in the advancing second module 31 presses the protruding slide 72 in the pilot valve 71, then the A and B flow channels in the pilot valve 71 are switched and the flow channel (not shown) of the main control valve 70 is also switched. Therefore, while the second piston rod 11 and module 31, which become one unit, are retracting, the waiting first piston rod 10 and first module 30 advance and advance together with the impact plunger 40 and plunger block module 60, which are retracted by the compressed gas, and automatically repeat the same action as the second piston rod 11 and the second module 31.

[0047] Each hinge block 1 is held upright against each limiting rod 3 (one of which is not shown).

[0048] In addition, the two sliding rods 72 in the pilot valve 71 work in a cross manner through the seesaw principle, which is achieved by the two valves pressing the adjusting rod 5 with the seesaw axis 72a as the reference, each time it is pressed from the left and right.

[0049] The technical concepts described above in the various embodiments of the present invention can be implemented independently or in combination with each other. Furthermore, although the present invention has been illustrated with reference to the accompanying drawings and the description of the invention, these are merely illustrative, and those skilled in the art can make various modifications and implement equivalent other embodiments. Therefore, the scope of protection of the present invention should be determined by the appended claims.

[0050] Industrial availability

[0051] This invention relates to a hydraulic crusher, and more specifically, to a hydraulic crusher with a multi-faceted cylinder assembly structure and no rear cover.

[0052] The hydraulic crusher without a back cover according to the present invention has a cylinder body made into a polyhedral shape to reduce the overall structure, thereby not only reducing manufacturing costs, but also making it easy to disassemble and assemble, thus enabling timely replacement of consumables and maintaining optimal hydraulic crusher performance at all times.

[0053] A sealing ring is applied to the plunger cylinder, which is assembled into a polyhedral structure, and compressed gas is filled into the sealed space to fulfill the function of the exhaust cover.

[0054] In addition, changing the structure of the impact piston to a pistonless impact plunger type increases the stroke distance and improves the impact force of the hydraulic crusher, thereby not only improving work efficiency but also reducing fuel consumption. Moreover, it has the following advantages: it can use linear bearing blocks and linear bearing guides, thereby significantly shortening the length of the impact plunger; and it uses a sealing ring in only one place on the plunger cylinder, thereby reducing manufacturing and management costs.

Claims

1. A hydraulic crusher without a rear cover, characterized in that, include: The sheet material is assembled into a polyhedron with multiple plug and bolt holes, gas injection ports and oil injection ports machined on it, and a pilot flow channel hole for connecting the main control valve and the pilot valve is perforated to seal the sheet material assembly part of the polyhedron. The aforementioned main control valve receives fluid supplied from outside the polyhedron; The aforementioned pilot valve controls the aforementioned main control valve within the sealed space inside the aforementioned polyhedron, and the pilot valve operates repeatedly and crosswise by the seesaw when the two protruding sliding pins inside the pilot valve are pressed each time, with the seesaw axis as the reference. The impact plunger, which is integrated with the plunger block module; A plunger cylinder is used for the reciprocating movement of the aforementioned impact plunger, and a sealing ring is applied to the aforementioned plunger cylinder to fill a closed space with compressed gas. Each double-acting cylinder is operated by the aforementioned main control valve; Each module is integrated with the piston rod of each of the above-mentioned double-acting cylinders and includes a linear bearing block, a hinge block, a push rod and a valve pressing adjustment rod. The hinge block has a locking part that abuts against the protrusion of the above-mentioned plunger block module. Block guides prevent the aforementioned modules from disengaging during forward and backward movement; A limiting roller is used to separate the hinge block from the plunger block module. After the advancing hinge block is pressed against the limiting roller, it stands upright along the inclined surface formed on the hinge block and separates from the protruding part of the plunger block module. The aforementioned impact plunger and plunger block module are advanced by the aforementioned modules; A linear bearing guide component that linearly guides the aforementioned modules, as well as the aforementioned impact plunger and plunger block modules; and... The compressed gas filling the space pushes the already advanced impact plunger and plunger block module backward to generate impact force.

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