Stone crushing device of earth pressure shield tunneling machine

Abstract

The utility model discloses a stone crushing device of an earth pressure shield machine, which belongs to the technical field of shield machines and comprises a mounting base, a first filter screen fixedly arranged on the mounting base, a mounting table fixedly arranged on the mounting base, a first oil cylinder fixedly arranged on the mounting table, and a second oil cylinder fixedly arranged on the mounting table. An upper jaw plate is fixedly arranged on an output shaft of the first oil cylinder, a lower jaw plate and a second oil cylinder are rotationally arranged on the mounting table, an output shaft of the second oil cylinder is rotationally arranged at the end, away from the mounting table, of the lower jaw plate, and a plurality of limiting rods are fixedly arranged on the side, away from the mounting table, of the lower jaw plate. The device has the advantage that the construction safety risk in the soil bin is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a stone crushing device for an earth pressure shield machine. Background Technique

[0002] A shield machine is a heavy mechanical equipment used for underground engineering construction, and is widely used in infrastructure construction such as subways, highways, railways, etc. It forms a continuous tunnel underground through cutting, excavation and propulsion, realizing the development and utilization of underground space.

[0003] When an earth pressure shield machine is under construction, in order to maintain the pressure balance on both sides of the cutter head, it is necessary to load earthwork in the soil chamber to balance the resistance generated during forward tunneling. For this reason, during the tunneling process, the stones broken by the cutter head will enter the soil chamber for storage, and then the amount of stones in the soil chamber will be adjusted in real time according to the tunneling speed and the need for pressure balance.

[0004] However, during the tunneling process, some of the stones broken by the cutter head will fall from the top, which not only has a potential risk of damaging the mechanical components in the soil chamber, but also large stones are likely to accumulate in the soil chamber, and manual cleaning is required to prevent the pressure imbalance on both sides of the cutter head, resulting in potential safety hazards.

[0005] Based on this, the utility model designs a stone crushing device for an earth pressure shield machine to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a stone crushing device for an earth pressure shield machine to solve the above technical problems.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: including an installation base, a first filter screen is fixedly arranged on the installation base, an installation platform is fixedly arranged on the installation base, a first oil cylinder is fixedly arranged on the installation platform, an upper jaw plate is fixedly arranged on the output shaft of the first oil cylinder, a lower jaw plate and a second oil cylinder are rotatably arranged on the installation platform, the output shaft of the second oil cylinder is rotatably arranged at one end of the lower jaw plate far away from the installation platform, a limiting rod is fixedly arranged on the side of the lower jaw plate far away from the installation platform, and a plurality of limiting rods are arranged.

[0008] By adopting the above technical solutions, after large stones are screened onto the lower jaw plate through the first filter screen, the stones are crushed by the upper jaw plate and the lower jaw plate, and the lower jaw plate is tilted to make the stones fall from the lower jaw plate to the bottom of the soil chamber. After the larger stones are restricted by the limiting rods, they are crushed again, so that the volume of the stones falling from the top of the cutter head is reduced, reducing the risk of damaging the mechanical components in the soil chamber and the accumulation of stones in the soil chamber.

[0009] Preferably, the included angle between the first filter screen and the installation base is 45-60°.

[0010] By adopting the above technical solution, after the first filter screen screens out large stones, the first filter screen installed at a large angle can make the large stones slide onto the lower jaw plate without accumulating on the first filter screen and affecting the operation of the first filter screen.

[0011] Preferably, stone breakers are fixedly arranged on the upper jaw plate and the lower jaw plate, and a plurality of stone breakers are provided.

[0012] By adopting the above technical solution, the stone breakers improve the crushing effect of the upper jaw plate and the lower jaw plate on large stones, can process large stones faster, make them fall into the soil bin after being broken, and facilitate the subsequent transfer track to transfer them.

[0013] Preferably, a plurality of relief holes are formed in the lower jaw plate.

[0014] By adopting the above technical solution, when large stones are broken between the upper jaw plate and the lower jaw plate, the small stones formed after crushing can directly fall into the soil bin through the relief holes, reducing the time required for the lower jaw plate to be dumped.

[0015] Preferably, a protective plate is fixedly arranged on the installation table, and a protective sleeve is sleeved on the second oil cylinder.

[0016] By adopting the above technical solution, it is avoided that the stones falling from the relief holes are blocked on the moving parts of the second oil cylinder, resulting in the abnormal operation of the second oil cylinder.

[0017] Preferably, a guiding plate is fixedly arranged on the installation table, and the guiding plate is located above the first oil cylinder.

[0018] By adopting the above technical solution, the guiding plate protects the first oil cylinder and increases the collection range of stones, so that after more stones pass through the filtering action of the first filter screen, the volume of the stones falling into the soil bin is uniform.

[0019] In summary, the present application has the following beneficial technical effects: Stones in the working range are guided by the guiding plate to fall onto the first filter screen and then large stones are screened out. After they slide onto the lower jaw plate, the stones are broken by the upper jaw plate and the lower jaw plate. At the same time, through the relief holes and the inclined lower jaw plate, the small stones formed after crushing fall from the lower jaw plate into the soil bin, reducing the volume of the stones falling from the top of the cutter head, reducing the risk of damage to the mechanical components in the soil bin and the accumulation of stones in the soil bin, and having the advantage of reducing the construction safety risk in the soil bin. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 Schematic installation diagram of the installation base for this embodiment;

[0022] Figure 2 Schematic structural diagram of the relief hole for this embodiment.

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Installation base; 2. First filter screen; 3. Installation table; 4. First oil cylinder; 5. Upper jaw plate; 6. Protection plate; 7. Guide plate; 8. Lower jaw plate; 9. Second oil cylinder; 10. Protection sleeve; 11. Relief hole; 12. Limit rod; 13. Broken stone. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] The following will further describe this application in detail with reference to Figure 1 —2.

[0027] A stone crushing device for an earth pressure shield machine includes an installation base 1.

[0028] A first filter screen 2 is fixedly arranged on the installation base 1, and the included angle between the first filter screen 2 and the installation base 1 is 45 - 60°.

[0029] An installation table 3 is fixedly arranged on the installation base 1. A first oil cylinder 4 is fixedly arranged on the installation table 3, and an upper jaw plate 5 is fixedly arranged on the output shaft of the first oil cylinder 4; a protection plate 6 is fixedly arranged on the installation table 3, and a guide plate 7 is fixedly arranged on the installation table 3, and the guide plate 7 is located above the first oil cylinder 4.

[0030] A lower jaw plate 8 and a second oil cylinder 9 are rotatably arranged on the installation platform 3. The output shaft of the second oil cylinder 9 is rotatably arranged at one end of the lower jaw plate 8 far from the installation platform 3. A protective sleeve 10 is sleeved on the second oil cylinder 9; a relief hole 11 is formed in the lower jaw plate 8, and a plurality of relief holes 11 are formed; a limiting rod 12 is fixedly arranged on one side of the lower jaw plate 8 far from the installation platform 3, and a plurality of limiting rods 12 are arranged.

[0031] Breaking stones 13 are fixedly arranged on the upper jaw plate 5 and the lower jaw plate 8, and a plurality of breaking stones 13 are arranged.

[0032] The implementation principle of this embodiment is as follows: Before the shield machine operates, the installation base 1 is fixedly arranged on the shield body in the upper middle part of the soil bin; when the shield machine starts to work, the cutter head rotates to cut the soil layer, and after breaking the stones in the soil layer, they fall into the soil bin through the gaps on the cutter head; the soil and stones located above the propulsion mechanism of the shield machine are affected by the guiding plate 7, transferred above the first filter screen 2, and fall on the first filter screen 2 to complete screening. The large stones slide along the first filter screen 2 onto the lower jaw plate 8; subsequently, the telescopic shaft of the first oil cylinder 4 is driven to extend, driving the upper jaw plate 5 to move towards the lower jaw plate 8, and the two squeeze the large stones on the lower jaw plate 8. At the same time, under the action of the broken stones, the large stones are broken into small stones, and a part of the small stones fall into the soil bin through the relief holes 11; subsequently, the telescopic shaft of the second oil cylinder 9 is driven to shorten, driving the lower jaw plate 8 to tilt, so that the remaining small stones on the lower jaw plate 8 are poured out of the lower jaw plate 8, and the large stones are intercepted on the lower jaw plate 8 by the limiting rods 12; subsequently, the telescopic shaft of the first oil cylinder 4 is driven to shorten and the telescopic shaft of the second oil cylinder 9 is driven to extend. After the upper jaw plate 5 and the lower jaw plate 8 are restored to the initial state, cyclic operation can be carried out to break the large stones remaining on the lower jaw plate 8.

[0033] By guiding the stones in the working range through the guiding plate 7 to fall onto the first filter screen 2, large stones are screened out, and after they slide onto the lower jaw plate 8, the stones are broken by the upper jaw plate 5 and the lower jaw plate 8. At the same time, the small stones formed after breaking are made to fall from the lower jaw plate 8 into the soil bin by means of the relief holes 11 and the tilted lower jaw plate 8, reducing the volume of the stones falling from the top of the cutter head, reducing the risk of damage to the mechanical components in the soil bin and the accumulation of stones in the soil bin, and having the advantage of reducing the construction safety risk in the soil bin.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0035] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A stone crushing device for an earth pressure shield machine, characterized in that: The invention comprises a mounting base (1), a first filter screen (2) being fixedly arranged on the mounting base (1), a mounting platform (3) being fixedly arranged on the mounting base (1), a first oil cylinder (4) being fixedly arranged on the mounting platform (3), an upper jaw plate (5) being fixedly arranged on the output shaft of the first oil cylinder (4), a lower jaw plate (8) and a second oil cylinder (9) being rotatably arranged on the mounting platform (3), the output shaft of the second oil cylinder (9) being rotatably arranged on an end of the lower jaw plate (8) away from the mounting platform (3), a limiting rod (12) being fixedly arranged on a side of the lower jaw plate (8) away from the mounting platform (3), and a plurality of limiting rods (12) being arranged.

2. The stone crushing device of an earth pressure shield machine according to claim 1, characterized in that: The angle between the first filter screen (2) and the mounting base (1) is 45-60°.

3. The stone crushing device of an earth pressure shield machine according to claim 1, characterized in that: The upper jaw plate (5) and the lower jaw plate (8) are fixedly provided with stone breaking blocks (13), and a plurality of the stone breaking blocks (13) are provided.

4. The stone crushing device of an earth pressure shield machine according to claim 1, characterized in that: The lower jaw plate (8) is provided with a clearance hole (11), and a plurality of the clearance holes (11) are provided.

5. The stone crushing device of an earth pressure shield machine according to claim 4, characterized in that: A protective plate (6) is fixedly arranged on the mounting platform (3), and a protective sleeve (10) is sleeved on the second oil cylinder (9).

6. The stone crushing device of an earth pressure shield machine according to claim 1, characterized in that: A guide plate (7) is fixedly arranged on the mounting platform (3), and the guide plate (7) is located above the first oil cylinder (4).

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