A folding shield for a heading machine cutting head

Abstract

This utility model relates to a folding protective cover for a tunneling machine cutting head, comprising a first cover, a second cover, a third cover, and a fourth cover. One end of the third cover is connected to one end of the first cover via at least one first hinge, and the other end has an extension portion perpendicular to the third cover. The extension portion is connected to one end of the second cover via at least one second hinge. The bottom of one end of the fourth cover is connected to the top of the third cover via at least one third hinge, and the fourth cover can be placed on top of the first and second covers. This utility model, through the first, second, and third hinges, allows the first, second, and fourth covers to rotate and be placed parallel to the third cover, thereby folding the first, second, third, and fourth covers for easy carrying.

Description

Technical Field

[0001] This utility model belongs to the field of tunneling machine technology, and specifically relates to a folding protective cover for the cutting head of a tunneling machine. Background Technology

[0002] Tunnel boring machines (TBMs) are widely used in rock mining, and their main working component is the cutting head at the front end of the TBM. After the TBM stops, a cutting head protective cover must be used to prevent accidents caused by the cutting head.

[0003] Chinese patent CN217421160U discloses a foldable protective cover for the cutting head of a roadheader, comprising a front plate, a left side plate, a right side plate, and a top plate. The width of the front plate is equal to that of the left and right side plates, the length of the front plate is equal to that of the top plate, and the width of the top plate is equal to that of the left and right side plates. The front plate is located in the middle, and the left and right side plates are hinged to the left and right sides of the front plate. The left and right side plates are detachably connected to the top plate. This design solves the problem of cutting head protection and allows for folding, reducing the space required for the cover. However, when folding, the top plate needs to be pulled out from the left and right side plates, making it inconvenient to carry. Utility Model Content

[0004] The purpose of this invention is to provide a folding cover for the cutting head of a tunneling machine, which does not need to be separated when folded, making it convenient to carry.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is a folding protective cover for a tunneling machine cutting head, comprising a first cover, a second cover, a third cover, and a fourth cover.

[0006] One end of the third cover is connected to one end of the first cover via at least one first hinge, and the other end is provided with an extension; the extension is perpendicular to the third cover; the extension is connected to one end of the second cover via at least one second hinge; the bottom of one end of the fourth cover is connected to the top of the third cover via at least one third hinge, and the fourth cover can be placed on the first cover and the second cover.

[0007] The fourth cover has at least one first limiting rod and at least one second limiting rod rotatably connected to its two sides by pins; when the first cover and the second cover are perpendicular to the third cover, a portion of the first limiting rod and the second limiting rod can rotate to the outside of the first cover and the second cover, respectively.

[0008] Preferably, each of the first limiting rod and the second limiting rod is provided with a first limiting groove and a second limiting groove respectively; a first limiting block and a second limiting block corresponding to the first limiting groove and the second limiting groove are respectively fixed on one side of the first cover and the second cover.

[0009] Preferably, each of the first limiting rods is provided with a third limiting groove; the end of the second cover away from the third cover is fixed with a third limiting block corresponding to the third limiting groove.

[0010] Preferably, the fourth cover is arc-shaped; a connecting frame is fixed to the bottom of one end of the fourth cover; one end of the third hinge is fixed to one side of the connecting frame, and the other end is fixed to the top of one side of the third cover.

[0011] Preferably, at least one handle is fixed to the outward side of the connecting frame.

[0012] This utility model provides a folding protective cover for the cutting head of a tunneling machine, which has the following advantages compared with the prior art:

[0013] (1) The first cover, the second cover and the third cover can be rotated and placed parallel to the third cover by means of the first hinge, the second cover and the third cover and the fourth cover can be folded for easy carrying;

[0014] (2) By means of the first limiting rod and the second limiting rod, a portion of the first limiting rod and the second limiting rod can be moved to the outside of the first cover and the second cover frame respectively, so that the first cover and the second cover cannot rotate outward, thereby locking the first cover and the second cover and preventing the first cover and the second cover from rotating when they are covered on the cutting head.

[0015] (3) When the first cover, second cover, third cover and fourth cover are folded, the first limit rod is rotated through the third limit groove and the third limit block of the first limit rod so that the third limit groove is fitted on the third limit block, thereby locking the first cover, second cover and third cover to prevent the folded cover from unfolding during carrying.

[0016] (4) The design is simple, easy to use, and has low manufacturing cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of the present invention when unfolded;

[0018] Figure 2 Enlarged view of the first limit rod;

[0019] Figure 3 This is a schematic diagram of the rear structure of the present invention when unfolded;

[0020] Figure 4 Enlarged view of the second limit rod;

[0021] Figure 5 Enlarged view of the extension;

[0022] Figure 6 Enlarged view of the third hinge;

[0023] Figure 7 This is a schematic diagram of the structure of this utility model when folded. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-7 As shown, a folding protective cover for a tunneling machine cutting head includes a first cover 1, a second cover 2, a third cover 3, and a fourth cover 4.

[0026] One end of the third cover 3 is connected to one end of the first cover 1 via at least one first hinge 11, and the other end is provided with an extension 31; the extension 31 is perpendicular to the third cover 3; the extension 31 is connected to one end of the second cover 2 via at least one second hinge 21, and the first cover 1 and the second cover 2 can rotate around the first hinge 11 and the second hinge 21 respectively, so that the first cover 1 and the second cover 2 are placed parallel to the third cover 3. The extension 31 makes the second hinge 21 not on the same vertical plane as the first hinge 11, so that after the first cover 1 and the third cover 3 are placed parallel, the second cover 2 can rotate to the side of the first cover 1 away from the third cover 3; the bottom of one end of the fourth cover 4 is connected to the top of the third cover 3 via at least one third hinge 41, and the fourth cover 4 can be placed on the first cover 1 and the second cover 2;

[0027] The first cover 1, the second cover 2, the third cover 3, and the fourth cover 4 are all composed of a frame and a steel wire mesh fixed inside the frame. The first cover 1, the second cover 2, and the fourth cover 4 can rotate around the hinge, so that the first cover 1 and the second cover 2 rotate outward and are placed parallel to the third cover 3, and the fourth cover 4 rotates downward and is placed parallel to the third cover 3. This allows the first cover 1, the second cover 2, the third cover 3, and the fourth cover 4 to be folded for easy carrying. By opening the folded cover, the cutting head is covered inside the folded cover, preventing personnel from accidentally touching the cutting head and being injured when the machine is stopped.

[0028] The fourth cover 4 has at least one first limiting rod 43 and at least one second limiting rod 44 rotatably connected to its two sides via pins 42. The pins 42 are fixed to the frame of the fourth cover 4, and the first limiting rods 43 and 44 are sleeved on the corresponding pins 42 and can rotate around the pins 42. When the first cover 1 and the second cover 2 are perpendicular to the third cover 3, a portion of the first limiting rods 43 and 44 can rotate to the outside of the first cover 1 and the second cover 2, respectively. By rotating the first limiting rods 43 and 44 downward, a portion of the first limiting rods 43 and 44 moves to the outside of the frame of the first cover 1 and the second cover 2, respectively. The first cover 1 and the second cover 2 cannot rotate outward. The first limiting rods 43 and 44 lock the first cover 1 and the second cover 2, preventing them from rotating when they are covered by the cutting head.

[0029] In this embodiment, each of the first limiting rods 43 and the second limiting rods 44 is provided with a first limiting groove and a second limiting groove respectively; a first limiting block 12 and a second limiting block 22 corresponding to the first limiting groove and the second limiting groove are fixed on one side of the first cover 1 and the second cover 2 respectively. When the first cover 1 and the second cover 2 are perpendicular to the third cover 3, the first limiting rods 43 and the second limiting rods 44 are rotated downwards so that the first limiting groove and the second limiting groove are respectively fitted onto the first limiting block 12 and the second limiting block 22. The first limiting rods 43 and the second limiting rods 44 are limited by the first limiting block 12 and the second limiting block 22, so that the operator can rotate the first limiting rods 43 and the second limiting rods 44 to a predetermined position.

[0030] In this embodiment, each of the first limiting rods 43 is provided with a third limiting groove; the end of the second cover 2 away from the third cover 3 is fixed with a third limiting block 23 corresponding to the third limiting groove. When the first cover 1, the second cover 2, the third cover 3 and the fourth cover 4 are folded, the first limiting rod 43 is rotated so that the third limiting groove is fitted onto the third limiting block 23, thereby locking the first cover 1, the second cover 2 and the third cover 3 to prevent the folded cover from unfolding during carrying.

[0031] In this embodiment, the fourth cover 4 is arc-shaped; a connecting frame 45 is welded and fixed to the bottom of one end of the fourth cover 4, and a wire mesh is also provided between the connecting frame 45 and the fourth cover 4; one end of the third hinge 41 is fixed to one side of the connecting frame 45, and the other end is fixed to the top of one side of the third cover 3. The fourth cover 4 can rotate downward around the third hinge 41 and be placed parallel to the third cover 3. By setting the fourth cover 4 to be arc-shaped, it is easier to increase the internal space of the folding cover.

[0032] In this embodiment, at least one handle 5 is fixed to the outward side of the connecting frame 45, which facilitates carrying the folded protective cover after folding.

[0033] The method of using this utility model is as follows: When the cutting head is not working, manually rotate the first limiting rod 43 to separate the first limiting rod 43 from the third limiting block 23. Then rotate the fourth cover 4 upward while rotating the second cover 2. Then rotate the first cover 1 and place the fourth cover 4 on the first cover 1 and the second cover 2. Rotate the first limiting rod 43 and the second limiting rod 44 so that the first limiting groove and the second limiting groove are respectively fitted onto the first limiting block 12 and the second limiting block 22, and the cutting head is covered inside the folding protective cover.

[0034] When the folding cover needs to be moved, rotate the first limiting rod 43 and the second limiting rod 44 upwards, rotate the first cover 1 so that the first cover 1 is placed parallel to the third cover 3, then rotate the second cover 2 so that the second cover 2 is placed parallel to the first cover 1 and the third cover 3, and at the same time rotate the fourth cover 4 downwards, rotate the first limiting rod 43 so that the third limiting groove is fitted onto the third limiting block 23, thereby locking the first cover 1, the second cover 2 and the third cover 3.

Claims

1. A folding protective cover for a tunneling machine cutting head, characterized in that, It includes a first cover (1), a second cover (2), a third cover (3) and a fourth cover (4). One end of the third cover (3) is connected to one end of the first cover (1) via at least one first hinge (11), and the other end is provided with an extension (31); the extension (31) is perpendicular to the third cover (3); the extension (31) is connected to one end of the second cover (2) via at least one second hinge (21); the bottom of one end of the fourth cover (4) is connected to the top of the third cover (3) via at least one third hinge (13), and the fourth cover (4) can be placed on the first cover (1) and the second cover (2); The fourth cover (4) is rotatably connected to at least one first limiting rod (43) and at least one second limiting rod (44) on both sides by a pin (42); when the first cover (1) and the second cover (2) are perpendicular to the third cover (3), a portion of the first limiting rod (43) and the second limiting rod (44) can rotate to the outside of the first cover (1) and the second cover (2), respectively.

2. The folding protective cover for a tunneling machine cutting head according to claim 1, characterized in that, Each of the first limiting rod (43) and the second limiting rod (44) is provided with a first limiting groove and a second limiting groove respectively; a first limiting block (12) and a second limiting block (22) corresponding to the first limiting groove and the second limiting groove are fixed on one side of the first cover (1) and the second cover (2) respectively.

3. The folding protective cover for a tunneling machine cutting head according to claim 1, characterized in that, Each of the first limiting rods (43) is provided with a third limiting groove; the second cover (2) is fixed with a third limiting block (23) corresponding to the third limiting groove at one end away from the third cover (3).

4. The folding protective cover for a tunneling machine cutting head according to claim 1, characterized in that, The fourth cover (4) is arc-shaped; a connecting frame (45) is fixed at the bottom of one end of the fourth cover (4); one end of the third hinge (13) is fixed to one side of the connecting frame (45), and the other end is fixed to the top of one side of the third cover (3).

5. The folding protective cover for a tunneling machine cutting head according to claim 4, characterized in that, At least one handle (5) is fixed to the outward side of the connecting frame (45).

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