Edge scraper of shield tunneling machine

Abstract

The utility model relates to the technical field of shield tunneling machines, in particular to an edge scraper of a shield tunneling machine. The scraper comprises a scraper body, the surface of the scraper body is connected with a first protective shell in a sliding mode, the surface of the first protective shell is fixedly connected with two L-shaped plates, screw rods are inserted into the L-shaped plates in a threaded mode, one end of each screw rod is rotationally connected with a rectangular block, the surface of the scraper body is connected with a second protective shell in a sliding mode, and the second protective shell is fixedly connected with the two L-shaped plates in a threaded mode. Two connecting blocks are connected to the surface of the second protective shell in a scraper mode, moving holes are formed in the surfaces of the connecting blocks, the rectangular block abuts against the surface of the scraper body, a limiting rod is slidably inserted into the L-shaped plate, and one end of the limiting rod is fixedly connected with the rectangular block. The problem that when the scraper body is placed or transported, outside sundries and particles easily enter the mounting hole of the scraper body, and consequently the surface of the scraper body is prone to abrasion and damage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to an edge scraper for a shield machine. Background Art

[0002] The shield machine is a tunnel boring machine that uses the shield method. The shield construction method is that the tunnel boring machine builds a "shield" for the tunnel while excavating. It is different from the open construction method, in which the edge scraper breaks the rock with a shearing effect. The blade angle of the tool is less than 90° and is generally arranged on the edge of the cutterhead.

[0003] A Chinese patent application CN201220065595.5 discloses a new type of hard alloy edge scraper for shield machine. The key points of its technical solution are: the edge scraper of the utility model shield tunnel boring machine is made of hard alloy material, and the raw material is 100% high-quality original tungsten carbide powder, which is processed by low-pressure sintering process. The hard alloy has high hardness and good wear resistance, which makes the scraper have a long service life and high working efficiency.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: when the scraper body is placed or transported, foreign debris and particles can easily enter the mounting hole of the scraper body, causing the surface of the scraper body to be easily worn and damaged; therefore, a shield machine edge scraper is proposed to address the above problems. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that foreign matter and particles easily enter the installation hole of the scraper body, causing the surface of the scraper body to be easily worn and damaged, and proposes a shield machine edge scraper.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a shield machine edge scraper, including a scraper body, the surface of the scraper body is slidably connected to a first protective shell, the surface of the first protective shell is fixedly connected to two L-shaped plates, a screw is inserted into the internal thread of the L-shaped plate, one end of the screw is rotatably connected to a rectangular block, the surface of the scraper body is slidably connected to a second protective shell, the surface of the second protective shell is fixedly connected to two connecting blocks, the surface of the connecting block is provided with a movable hole, and the rectangular block abuts against the surface of the scraper body.

[0007] The effect achieved by the above components is: it achieves the effect of protecting the scraper body, preventing foreign debris and particles from easily entering the mounting hole of the scraper body when the scraper body is placed or transported, causing the surface of the scraper body to be easily worn and damaged, thereby improving the practicality of the device.

[0008] Preferably, a limiting rod is slidably inserted in the L-shaped plate, and one end of the limiting rod is fixedly connected to the rectangular block.

[0009] The effects achieved by the above components are: preventing the rectangular block from rotating along with the rotation of the screw, thereby improving the stability of the device.

[0010] Preferably, one end of the screw rod away from the rectangular block is fixedly connected with a handle, and the size of the rectangular block is matched with the size of the movable hole of the connecting block.

[0011] The effect achieved by the above components is that the staff can quickly and stably rotate the screw to drive the rectangular block to move.

[0012] Preferably, one end of the rectangular block away from the screw rod is fixedly connected with a protective pad, and the protective material is rubber.

[0013] The effects achieved by the above components are: avoiding scratches when the rectangular block abuts against the scraper body, and improving the stability of the device.

[0014] Preferably, the surface of the second protective shell is connected to a U-shaped frame, the inner surface of the U-shaped frame is fixedly connected to a fixing rod, the arc surface of the fixing rod is rotatably connected to a support plate, the surface of the support plate is fixedly connected to a mounting plate, the second protective shell is fixedly connected to a semicircular plate on one side close to the U-shaped frame, an insertion rod is slidably inserted in the semicircular plate, and a limiting groove is provided on the side wall of the support plate.

[0015] The effect achieved by the above components is: to facilitate the workers to perform the position positioning operation during the installation of the first protective shell and the second protective shell, thereby improving the convenience of the device.

[0016] Preferably, the arc surface of the fixing rod is sleeved with two torsion springs, and the two ends of the torsion springs are respectively fixedly connected to the inner surface of the U-shaped frame and the support plate.

[0017] The effect achieved by the above components is that the torsion force of the torsion spring drives the support plate to rotate on the arc surface of the fixed plate and automatically fits with the second protective shell to be retracted, thereby improving the convenience of the device.

[0018] Preferably, one end of the insertion rod is fixedly connected to a setting block, the arc surface of the insertion rod is sleeved with a spring, and both ends of the spring are respectively fixedly connected to the setting block and the semicircular plate.

[0019] The effect achieved by the above components is that the elastic force of the spring drives the insertion rod to slide in the semicircular plate and automatically insert into the limiting groove of the support plate, thereby improving the convenience of the device.

[0020] In summary, the beneficial effects of the utility model are:

[0021] In the utility model, the scraper body is protected, and foreign debris and particles are prevented from easily entering the installation hole of the scraper body when the scraper body is placed or transported, causing the surface of the scraper body to be easily worn and damaged, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the first protective shell in the utility model;

[0024] Figure 3 For the utility model Figure 2 A magnified image of point A;

[0025] Figure 4 For the utility model Figure 1 Enlarged view of point B.

[0026] Legend: 1. Scraper body; 2. First protective shell; 3. Second protective shell; 4. L-shaped plate; 5. Screw; 6. Rectangular block; 7. Limit rod; 8. Handle; 9. Protective pad; 10. Connecting block; 11. U-shaped frame; 12. Fixing rod; 13. Support plate; 14. Mounting plate; 15. Semicircular plate; 16. Setting block; 17. Torsion spring; 18. Spring; 19. Insert rod. DETAILED DESCRIPTION

[0027] Reference Figure 1As shown, the utility model provides a technical solution: a shield machine edge scraper, comprising a scraper body 1, a first protective shell 2 is slidably connected to the surface of the scraper body 1, two L-shaped plates 4 are fixedly connected to the surface of the first protective shell 2, a screw 5 is inserted into the inner thread of the L-shaped plate 4, one end of the screw 5 is rotatably connected to a rectangular block 6, a second protective shell 3 is slidably connected to the surface of the scraper body 1, two connecting blocks 10 are fixedly connected to the surface of the second protective shell 3, a moving hole is opened on the surface of the connecting block 10, the rectangular block 6 abuts against the surface of the scraper body 1, a limiting rod 7 is slidably inserted in the L-shaped plate 4, and one end of the limiting rod 7 is fixedly connected to the rectangular block 6. The rotating screw 5 rotates in the L-shaped plate 4, the screw 5 drives the rectangular block 6 to move, and the rectangular block 6 drives the limiting rod 7 to move, so as to avoid the situation that the rectangular block 6 rotates with the rotation of the screw 5, and improve the stability of the device, and the end of the screw 5 away from the rectangular block 6 is fixedly connected to the handle 8, and the size of the rectangular block 6 is adapted to the size of the moving hole of the connecting block 10. The handle 8 is turned to drive the screw 5 to slide in the L-shaped plate 4, so that the staff can quickly and stably turn the screw 5 to drive the rectangular block 6 to move. The end of the rectangular block 6 away from the screw 5 is fixedly connected to a protective pad 9, and the protective material is rubber. The rectangular block 6 drives the protective pad 9 to move, avoiding scratches when the rectangular block 6 abuts against the scraper body 1, and improving the stability of the device. The surface of the second protective shell 3 is connected to a U-shaped frame 11, and the inner surface of the U-shaped frame 11 is fixedly connected to a fixed rod 12. The arc surface of the fixed rod 12 is rotatably connected to a support plate 13, and the surface of the support plate 13 is fixedly connected to a mounting plate 14. The second protective shell 3 is fixedly connected to a semicircular plate 15 on the side close to the U-shaped frame 11, and a rod 19 is slidably inserted in the semicircular plate 15. The side wall of the support plate 13 is provided with a limiting groove. Pull the support plate 13 to rotate on the arc surface of the fixing rod 12, and the support plate 13 drives the mounting plate 14 to move until the mounting plate 14 contacts the first protective shell 2, and push the insertion rod 19 to slide in the semicircular plate 15 until the insertion rod 19 is inserted into the limiting groove of the support plate 13, so as to facilitate the staff to perform position positioning operations during the installation of the first protective shell 2 and the second protective shell 3, thereby improving the convenience of the device. The arc surface of the fixing rod 12 is sleeved with two torsion springs 17, and the two ends of the torsion spring 17 are respectively fixedly connected to the inner surface of the U-shaped frame 11 and the support plate 13. Pull the insertion rod 19 to slide in the semicircular plate 15 until the insertion rod 19 is out of the limiting groove of the support plate 13. The torsion force of the torsion spring 17 drives the support plate 13 to rotate on the arc surface of the fixed plate and automatically fits and folds up with the second protective shell 3, thereby improving the speed of the device. One end of the insertion rod 19 is fixedly connected to the setting block 16, and the arc surface of the insertion rod 19 is covered with a spring 18. The two ends of the spring 18 are respectively fixedly connected to the setting block 16 and the semicircular plate 15.Pull the support plate 13 to rotate on the arc surface of the fixed rod 12, and the support plate 13 and the insertion rod 19 are squeezed. At this time, the insertion rod 19 slides in the semicircular plate 15. At this time, the fit is in a stretched state until the position of the insertion rod 19 and the limiting groove of the support plate 13 are aligned. The elastic force of the spring 18 drives the insertion rod 19 to slide in the semicircular plate 15 and automatically insert into the limiting groove of the support plate 13, thereby improving the convenience of the device.

[0028] Working principle: when the staff needs to protect the scraper body 1, the scraper body 1 is placed on the surface of the second anti-slip shell, the first protective shell 2 is pushed to slide on the surface of the scraper body 1, and then the support plate 13 is pulled to rotate on the arc surface of the fixed rod 12, and the support plate 13 drives the mounting plate 14 to move until the mounting plate 14 contacts the first protective shell 2, and the insertion rod 19 is pushed to slide in the semicircular plate 15 until the insertion rod 19 is inserted into the limiting groove of the support plate 13, so that the staff can perform the position positioning operation during the installation process of the first protective shell 2 and the second protective shell 3, and the handle 8 is turned to drive the screw rod 5 to slide in the L-shaped plate 4, and the screw 5 drives the rectangular block 6 to move, and the rectangular block 6 drives the limiting rod 7 to move, thereby avoiding the situation that the rectangular block 6 rotates with the rotation of the screw 5. When the installation is completed, the support plate 13 is pulled to rotate on the arc surface of the fixing rod 12, and the support plate 13 is squeezed with the insertion rod 19. At this time, the insertion rod 19 slides in the semicircular plate 15. At this time, the fit is in a stretched state until the position of the insertion rod 19 and the limiting groove of the support plate 13 are aligned. The elastic force of the spring 18 drives the insertion rod 19 to slide in the semicircular plate 15 and automatically insert into the limiting groove of the support plate 13, thereby achieving the effect of protecting the scraper body 1 and avoiding foreign debris and particles from easily entering the installation hole of the scraper body 1 when the scraper body 1 is placed or transported, resulting in the surface of the scraper body 1 being easily worn and damaged, thereby improving the practicability of the device.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A shield machine edge scraper, comprising a scraper body (1), characterized in that: The surface of the scraper body (1) is slidably connected to a first protective shell (2), the surface of the first protective shell (2) is fixedly connected to two L-shaped plates (4), the L-shaped plate (4) is internally threaded with a screw rod (5), one end of the screw rod (5) is rotatably connected to a rectangular block (6), the surface of the scraper body (1) is slidably connected to a second protective shell (3), the surface of the second protective shell (3) is fixedly connected to two connecting blocks (10), the surface of the connecting block (10) is provided with a movable hole, and the rectangular block (6) is in contact with the surface of the scraper body (1).

2. A shield machine edge scraper according to claim 1, characterized in that: A limiting rod (7) is slidably inserted in the L-shaped plate (4), and one end of the limiting rod (7) is fixedly connected to the rectangular block (6).

3. A shield machine edge scraper according to claim 2, characterized in that: One end of the screw rod (5) away from the rectangular block (6) is fixedly connected with a handle (8), and the size of the rectangular block (6) is compatible with the size of the moving hole of the connecting block (10).

4. The shield machine edge scraper according to claim 1, characterized in that: One end of the rectangular block (6) away from the screw rod (5) is fixedly connected with a protective pad (9), and the protective material is rubber.

5. The shield machine edge scraper according to claim 1, characterized in that: The surface of the second protective shell (3) is connected to a U-shaped frame (11), the inner surface of the U-shaped frame (11) is fixedly connected to a fixing rod (12), the arc surface of the fixing rod (12) is rotatably connected to a support plate (13), the surface of the support plate (13) is fixedly connected to a mounting plate (14), a semicircular plate (15) is fixedly connected to a side of the second protective shell (3) close to the U-shaped frame (11), an insertion rod (19) is slidably inserted in the semicircular plate (15), and a side wall of the support plate (13) is provided with a limiting groove.

6. A shield machine edge scraper according to claim 5, characterized in that: The arc surface of the fixing rod (12) is sleeved with two torsion springs (17), and the two ends of the torsion spring (17) are respectively fixedly connected to the inner surface of the U-shaped frame (11) and the support plate (13).

7. The shield machine edge scraper according to claim 5, characterized in that: One end of the insertion rod (19) is fixedly connected to a setting block (16), the arc surface of the insertion rod (19) is sleeved with a spring (18), and the two ends of the spring (18) are respectively fixedly connected to the setting block (16) and the semicircular plate (15).

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