Secondary crusher protection device

Abstract

The utility model relates to the technical field of crushing equipment of shield tunneling machines, in particular to a protection device of a secondary crusher. Comprising a secondary crushing bin, a mud header pipe and a metal removal protection mechanism, when waste metal in mud enters a mud pipeline, the waste metal is recognized through a magnetic sensor firstly, then a signal is sent out, an electromagnetic coil is started to operate through a control system, and the electromagnetic coil generates an electromagnetic field to act on the waste metal in the mud pipe; the moving speed of the waste metal is reduced until the waste metal is adsorbed to the discharging port, the gate valve is started, the oil cylinder is started, the magnetic suction cup moves to the discharging port, the magnetic suction cup is started to operate through the control system, the magnetic suction cup is magnetized, and the waste metal is completely and firmly adsorbed by the magnetic suction cup along with weakening of the magnetic force of the electromagnetic coil. Therefore, the metal pieces in the slag slurry are removed, and the situation that a crushing mechanism in a secondary crushing bin is damaged due to the fact that the metal pieces are conveyed into the secondary crushing bin is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine crushing equipment, in particular to a secondary crusher protection device. Background Art

[0002] During the construction process of the shield machine, especially when encountering a construction environment with a lot of stones, only using the cutter head to perform the initial crushing of the stones will result in incomplete crushing of the stones.

[0003] To solve the above problems, in the prior art, a secondary crushing device is connected to the output end of the screw conveyor of the shield machine through a pipeline, and the stones crushed by the cutter disc are crushed again by the secondary crushing device, so that the stones are crushed more thoroughly.

[0004] However, during shield construction, you may encounter underground concrete piles, anchors left on the riverbed, and retaining walls in reinforced areas. Since these structures contain metal materials, when the metal materials enter the secondary crushing for crushing, they will damage the crushing structure in the secondary crusher and reduce the service life of the secondary crushing equipment. Utility Model Content

[0005] The utility model aims to provide a secondary crusher protection device, aiming to solve the technical problem that when metal materials enter the secondary crushing for crushing, the crushing structure in the secondary crusher will be damaged, thereby reducing the service life of the secondary crushing equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides a secondary crusher protection device, comprising a secondary crushing bin, a mud main pipe and a metal removal protection mechanism, wherein the mud main pipe is arranged at the feed inlet of the secondary crushing bin, and one end of the mud main pipe away from the secondary crushing bin is connected to the output end of the screw conveyor of the shield machine;

[0007] The metal removal protection mechanism includes a magnetic sensor, an electromagnetic coil, a gate valve, an installation box, a magnetic suction cup and an oil cylinder. A discharge port is provided on the side wall of the mud main pipe, a mounting protrusion is provided on the outer wall of the discharge port, and the gate valve is provided on the side of the mounting protrusion. The installation box is detachably connected to the mounting protrusion and is located at the end of the mounting protrusion away from the mud main pipe. The oil cylinder is provided at the end of the installation box away from the mud main pipe, the output end of the oil cylinder is located inside the installation box, and the output end of the oil cylinder is provided with the magnetic suction cup. The inner wall of the mud main pipe is also provided with the electromagnetic coil, and the electromagnetic coil is located at the end of the discharge port away from the secondary crushing bin. The magnetic sensor is also provided on the mud main pipe, and the magnetic sensor is provided at the end of the electromagnetic coil away from the discharge port.

[0008] Wherein, a fixing wing plate is arranged at one end of the installation box close to the installation protrusion, and the fixing wing plate is detachably connected to the installation protrusion.

[0009] Wherein, a collecting box is arranged at the bottom of one end of the installation box away from the installation protrusion, the top of the collecting box is connected with the top of the installation box, and the collecting box is perpendicular to the installation box.

[0010] A perspective window is provided on the side wall of the collection box, a mounting frame is provided on the outer side wall of the perspective window, the mounting frame is detachably connected to the collection box, and handles are provided on both sides of the mounting frame.

[0011] Among them, the secondary crusher protection device also includes a mud scraping mechanism, which includes a mounting frame, an electric push rod and a scraper. A through groove is penetrated through the upper surface of the end of the mounting box away from the mounting protrusion, and the scraper is slidably arranged at the through groove. The mounting frame is detachably connected to the upper surface of the mounting box, and the electric push rod is arranged on the top of the mounting frame, and the output end of the electric push rod is connected to the scraper.

[0012] Wherein, a connection block is arranged at one end of the scraper close to the electric push rod, and the connection block is connected to the output end of the electric push rod.

[0013] The utility model discloses a secondary crusher protection device. When waste metals such as steel bars mixed in mud enter the mud pipeline, the magnetic sensor first identifies the waste metals such as steel bars, then sends a signal to start the electromagnetic coil through the control system, the electromagnetic coil generates an electromagnetic field, acts on the waste metals such as steel bars in the mud pipe, slows down the movement speed until they are adsorbed to the discharge port, starts the gate valve, and starts the oil cylinder, so that the magnetic suction cup moves to the discharge port, and starts the operation of the magnetic suction cup through the control system, so that the magnetic suction cup is magnetized. As the magnetic force of the electromagnetic coil weakens, the waste metals such as steel bars are completely and firmly adsorbed by the magnetic suction cup, thereby completing the removal of metal parts in the slag slurry, avoiding the metal parts conveyor in the secondary crushing bin, and causing damage to the crushing mechanism in the secondary crushing bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1It is a structural schematic diagram of a secondary crusher protection device of the first embodiment of the utility model.

[0016] Figure 2 The utility model provides Figure 1 A magnified view of the local structure at A.

[0017] Figure 3 It is a top view of the mud main pipe in the first embodiment of the utility model.

[0018] Figure 4 The utility model provides Figure 3 Cross-sectional view of the internal structure of line BB.

[0019] Figure 5 The utility model provides Figure 3 Cross-sectional view of the internal structure of the CC line.

[0020] Figure 6 It is a structural schematic diagram of a secondary crusher protection device according to the second embodiment of the utility model.

[0021] Figure 7 The utility model provides Figure 6 A magnified view of the local structure at D.

[0022] 101-secondary crushing bin, 102-mud main pipe, 103-magnetic sensor, 104-electromagnetic coil, 105-gate valve, 106-installation box, 107-magnetic suction cup, 108-oil cylinder, 109-discharge port, 110-installation protrusion, 111-fixed wing plate, 112-collection box, 113-perspective window, 114-installation frame, 115-handle, 201-installation frame, 202-electric push rod, 203-scraper, 204-through slot, 205-connecting block. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] First embodiment:

[0025] See also Figures 1 to 5 ,in Figure 1 is a schematic structural diagram of the secondary crusher protection device of the first embodiment, Figure 2 yes Figure 1 The enlarged view of the local structure at A. Figure 3 is a top view of the mud main pipe in the first embodiment, Figure 4 yes Figure 3 The internal structure cross-sectional view of the BB line, Figure 5 Yes Figure 3 Cross-sectional view of the internal structure of the CC line.

[0026] The utility model provides a secondary crusher protection device: including a secondary crushing bin 101, a mud main pipe 102 and a metal removal protection mechanism, wherein the metal removal protection mechanism includes a magnetic sensor 103, an electromagnetic coil 104, a gate valve 105, an installation box 106, a magnetic suction cup 107 and an oil cylinder 108. The above scheme solves the problem that when metal materials enter the secondary crushing for crushing, the crushing structure in the secondary crusher is damaged, thereby reducing the service life of the secondary crushing equipment. It can be understood that the above scheme can be used in the structure of the protection device of the secondary crushing equipment for the shield machine.

[0027] According to this specific embodiment, the mud main pipe 102 is provided at the feed port of the secondary crushing bin 101. The end of the mud main pipe 102 away from the secondary crushing bin 101 is connected to the output end of the screw conveyor of the shield machine. The slurry crushed by the shield machine cutter head is transported to the secondary crushing bin 101 through the mud main pipe 102 to perform secondary crushing on the stones in the mud.

[0028] Among them, a discharge port 109 is provided through the side wall of the mud main pipe 102, a mounting protrusion 110 is provided on the outer side wall of the discharge port 109, the gate valve 105 is provided on the side of the mounting protrusion 110, the mounting box 106 is detachably connected to the mounting protrusion 110, and is located at the end of the mounting protrusion 110 away from the mud main pipe 102, the oil cylinder 108 is provided at the end of the mounting box 106 away from the mud main pipe 102, the output end of the oil cylinder 108 is located inside the mounting box 106, and the output end of the oil cylinder 108 is provided with the magnetic suction cup 107, the inner wall of the mud main pipe 102 is also provided with the electromagnetic coil 104, the electromagnetic coil 104 is located at the end of the discharge port 109 away from the secondary crushing bin 101, the mud main pipe 102 is also provided with the magnetic sensor 103, and the magnetic sensor 103 is arranged at the end of the electromagnetic coil 104 away from the At one end of the discharge port 109, when waste metals such as steel bars mixed in the mud enter the mud pipeline, the waste metals such as steel bars are first identified by the magnetic sensor 103, and then a signal is sent to start the electromagnetic coil 104 through the control system. The electromagnetic coil 104 generates an electromagnetic field, which acts on the waste metals such as steel bars in the mud pipe, slowing down their movement speed until they are adsorbed to the discharge port 109, starting the gate valve 105, and starting the oil cylinder 108, so that the magnetic suction cup 107 moves to the discharge port 109, and the magnetic suction cup 107 is started by the control system to magnetize the magnetic suction cup 107. As the magnetic force of the electromagnetic coil 104 weakens, the waste metals such as steel bars are completely and firmly adsorbed by the magnetic suction cup 107, thereby completing the removal of metal parts in the slag slurry, avoiding the metal parts conveyor in the secondary crushing bin 101, and causing damage to the crushing mechanism in the secondary crushing bin 101.

[0029] Secondly, a fixed wing plate 111 is provided at one end of the installation box 106 close to the installation protrusion 110. The fixed wing plate 111 is detachably connected to the installation protrusion 110, and the fixed wing plate 111 is fixed to the installation protrusion 110 by screws, thereby completing the installation of the installation box 106.

[0030] At the same time, a collecting box 112 is provided at the bottom of one end of the installation box 106 away from the installation protrusion 110, and the top of the collecting box 112 is connected with the top of the installation box 106. The collecting box 112 is perpendicular to the installation box 106. When the magnetic suction cup 107 is demagnetized, the waste metal adsorbed on the magnetic suction cup 107 falls into the collecting box 112, completing the collection of the waste metal.

[0031] In addition, a perspective window 113 is provided on the side wall of the collection box 112, and an installation frame 114 is provided on the outer side wall of the perspective window 113. The installation frame 114 is detachably connected to the collection box 112, and handles 115 are provided on both sides of the installation frame 114. The collection status of the waste metal in the collection box 112 can be observed through the perspective window 113. After removing the screws used to fix the installation frame 114, the installation frame 114 can be removed from the collection box 112 through the handles 115, so as to facilitate the cleaning of the waste metal in the collection box 112.

[0032] When a secondary crusher protection device of the present embodiment is used, the slurry crushed by the shield machine cutter head is transported to the secondary crushing chamber 101 through the mud main pipe 102 to perform secondary crushing on the stones in the mud. When waste metals such as steel bars mixed in the mud enter the mud pipeline, the waste metals such as steel bars are first identified by the magnetic sensor 103, and then a signal is sent to start the operation of the electromagnetic coil 104 through the control system. The electromagnetic coil 104 generates an electromagnetic field to act on the waste metals such as steel bars in the mud pipe, slowing down the movement speed of the waste metals until they are adsorbed. When the discharge port 109 is reached, the gate valve 105 is started, and the oil cylinder 108 is started, so that the magnetic suction cup 107 moves to the discharge port 109, and the operation of the magnetic suction cup 107 is started by the control system, so that the magnetic suction cup 107 is magnetized, and as the magnetic force of the electromagnetic coil 104 weakens, the waste metal such as steel bars is completely firmly adsorbed by the magnetic suction cup 107, thereby completing the removal of metal parts in the slurry, avoiding the metal parts conveyor in the secondary crushing bin 101, and causing damage to the crushing mechanism in the secondary crushing bin 101.

[0033] Second embodiment:

[0034] Based on the first embodiment, please refer to Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a secondary crusher protection device according to a second embodiment, Figure 7 for Figure 6 A magnified view of the local structure at D.

[0035] The utility model provides a secondary crusher protection device which also includes a mud scraping mechanism. The mud scraping mechanism includes a mounting frame 201 , an electric push rod 202 and a scraper 203 .

[0036] According to this specific embodiment, a through groove 204 is provided on the upper surface of the end of the mounting box 106 away from the mounting protrusion 110, and the scraper 203 is slidably provided at the through groove 204. The mounting frame 201 is detachably connected to the upper surface of the mounting box 106, and the electric push rod 202 is provided on the top of the mounting frame 201. The output end of the electric push rod 202 is connected to the scraper 203. When the electric push rod 202 is started, the scraper 203 is driven to slide on the through groove 204, thereby scraping off the mud attached to the magnetic suction cup 107, so that the magnetic suction cup 107 always maintains good performance.

[0037] Among them, a connection block 205 is set at one end of the scraper 203 close to the electric push rod 202, and the connection block 205 is connected to the output end of the electric push rod 202. Through the setting of the connection block 205, the connection between the electric push rod 202 and the scraper 203 is completed.

[0038] When using a secondary crusher protection device of this embodiment, the connection between the electric push rod 202 and the scraper 203 is completed through the setting of the connecting block 205, and the electric push rod 202 is started to drive the scraper 203 to slide on the through groove 204, thereby scraping off the mud attached to the magnetic suction cup 107, so that the magnetic suction cup 107 always maintains good performance.

[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A secondary crusher protection device, comprising a secondary crushing chamber and a mud main pipe, wherein the mud main pipe is arranged at the feed port of the secondary crushing chamber, and one end of the mud main pipe away from the secondary crushing chamber is connected to the output end of the screw conveyor of the shield machine, characterized in that: It also includes a metal removal protection mechanism; The metal removal protection mechanism includes a magnetic sensor, an electromagnetic coil, a gate valve, an installation box, a magnetic suction cup and an oil cylinder. A discharge port is provided on the side wall of the mud main pipe, a mounting protrusion is provided on the outer wall of the discharge port, and the gate valve is provided on the side of the mounting protrusion. The installation box is detachably connected to the mounting protrusion and is located at the end of the mounting protrusion away from the mud main pipe. The oil cylinder is provided at the end of the installation box away from the mud main pipe, the output end of the oil cylinder is located inside the installation box, and the output end of the oil cylinder is provided with the magnetic suction cup. The inner wall of the mud main pipe is also provided with the electromagnetic coil, and the electromagnetic coil is located at the end of the discharge port away from the secondary crushing bin. The magnetic sensor is also provided on the mud main pipe, and the magnetic sensor is provided at the end of the electromagnetic coil away from the discharge port.

2. The secondary crusher protection device according to claim 1, characterized in that: A fixing wing plate is arranged at one end of the installation box close to the installation protrusion, and the fixing wing plate is detachably connected to the installation protrusion.

3. The secondary crusher protection device according to claim 1, characterized in that: A collecting box is arranged at the bottom of one end of the installation box away from the installation protrusion, the top of the collecting box is connected with the top of the installation box, and the collecting box is perpendicular to the installation box.

4. The secondary crusher protection device according to claim 3, characterized in that: A perspective window is arranged on the side wall of the collection box, and a mounting frame is arranged on the outer side wall of the perspective window. The mounting frame is detachably connected to the collection box, and handles are arranged on both sides of the mounting frame.

5. The secondary crusher protection device according to claim 1, characterized in that: The secondary crusher protection device also includes a mud scraping mechanism, which includes a mounting frame, an electric push rod and a scraper. A through groove is provided on the upper surface of the end of the mounting box away from the mounting protrusion, and the scraper is slidably provided at the through groove. The mounting frame is detachably connected to the upper surface of the mounting box, and the electric push rod is provided at the top of the mounting frame, and the output end of the electric push rod is connected to the scraper.

6. The secondary crusher protection device according to claim 5, characterized in that: A connection block is arranged at one end of the scraper close to the electric push rod, and the connection block is connected to the output end of the electric push rod.

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